Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1 | // Copyright 2012 the V8 project authors. All rights reserved. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2 | // Use of this source code is governed by a BSD-style license that can be |
| 3 | // found in the LICENSE file. |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 4 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 5 | #include <limits.h> // For LONG_MIN, LONG_MAX. |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 6 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 7 | #if V8_TARGET_ARCH_MIPS |
Leon Clarke | f7060e2 | 2010-06-03 12:02:55 +0100 | [diff] [blame] | 8 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 9 | #include "src/base/bits.h" |
| 10 | #include "src/base/division-by-constant.h" |
| 11 | #include "src/bootstrapper.h" |
| 12 | #include "src/codegen.h" |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 13 | #include "src/debug/debug.h" |
| 14 | #include "src/mips/macro-assembler-mips.h" |
| 15 | #include "src/register-configuration.h" |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 16 | #include "src/runtime/runtime.h" |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 17 | |
| 18 | namespace v8 { |
| 19 | namespace internal { |
| 20 | |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 21 | // Floating point constants. |
| 22 | const uint32_t kDoubleSignMask = HeapNumber::kSignMask; |
| 23 | const uint32_t kDoubleExponentShift = HeapNumber::kExponentShift; |
| 24 | const uint32_t kDoubleNaNShift = kDoubleExponentShift - 1; |
| 25 | const uint32_t kDoubleNaNMask = |
| 26 | HeapNumber::kExponentMask | (1 << kDoubleNaNShift); |
| 27 | |
| 28 | const uint32_t kSingleSignMask = kBinary32SignMask; |
| 29 | const uint32_t kSingleExponentMask = kBinary32ExponentMask; |
| 30 | const uint32_t kSingleExponentShift = kBinary32ExponentShift; |
| 31 | const uint32_t kSingleNaNShift = kSingleExponentShift - 1; |
| 32 | const uint32_t kSingleNaNMask = kSingleExponentMask | (1 << kSingleNaNShift); |
| 33 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 34 | MacroAssembler::MacroAssembler(Isolate* arg_isolate, void* buffer, int size, |
| 35 | CodeObjectRequired create_code_object) |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 36 | : Assembler(arg_isolate, buffer, size), |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 37 | generating_stub_(false), |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 38 | has_frame_(false), |
| 39 | has_double_zero_reg_set_(false) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 40 | if (create_code_object == CodeObjectRequired::kYes) { |
| 41 | code_object_ = |
| 42 | Handle<Object>::New(isolate()->heap()->undefined_value(), isolate()); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 43 | } |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 44 | } |
| 45 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 46 | void MacroAssembler::Load(Register dst, |
| 47 | const MemOperand& src, |
| 48 | Representation r) { |
| 49 | DCHECK(!r.IsDouble()); |
| 50 | if (r.IsInteger8()) { |
| 51 | lb(dst, src); |
| 52 | } else if (r.IsUInteger8()) { |
| 53 | lbu(dst, src); |
| 54 | } else if (r.IsInteger16()) { |
| 55 | lh(dst, src); |
| 56 | } else if (r.IsUInteger16()) { |
| 57 | lhu(dst, src); |
| 58 | } else { |
| 59 | lw(dst, src); |
| 60 | } |
| 61 | } |
| 62 | |
| 63 | |
| 64 | void MacroAssembler::Store(Register src, |
| 65 | const MemOperand& dst, |
| 66 | Representation r) { |
| 67 | DCHECK(!r.IsDouble()); |
| 68 | if (r.IsInteger8() || r.IsUInteger8()) { |
| 69 | sb(src, dst); |
| 70 | } else if (r.IsInteger16() || r.IsUInteger16()) { |
| 71 | sh(src, dst); |
| 72 | } else { |
| 73 | if (r.IsHeapObject()) { |
| 74 | AssertNotSmi(src); |
| 75 | } else if (r.IsSmi()) { |
| 76 | AssertSmi(src); |
| 77 | } |
| 78 | sw(src, dst); |
| 79 | } |
| 80 | } |
| 81 | |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 82 | void MacroAssembler::LoadRoot(Register destination, |
| 83 | Heap::RootListIndex index) { |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 84 | lw(destination, MemOperand(s6, index << kPointerSizeLog2)); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 85 | } |
| 86 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 87 | |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 88 | void MacroAssembler::LoadRoot(Register destination, |
| 89 | Heap::RootListIndex index, |
| 90 | Condition cond, |
| 91 | Register src1, const Operand& src2) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 92 | Branch(2, NegateCondition(cond), src1, src2); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 93 | lw(destination, MemOperand(s6, index << kPointerSizeLog2)); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 94 | } |
| 95 | |
| 96 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 97 | void MacroAssembler::StoreRoot(Register source, |
| 98 | Heap::RootListIndex index) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 99 | DCHECK(Heap::RootCanBeWrittenAfterInitialization(index)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 100 | sw(source, MemOperand(s6, index << kPointerSizeLog2)); |
| 101 | } |
| 102 | |
| 103 | |
| 104 | void MacroAssembler::StoreRoot(Register source, |
| 105 | Heap::RootListIndex index, |
| 106 | Condition cond, |
| 107 | Register src1, const Operand& src2) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 108 | DCHECK(Heap::RootCanBeWrittenAfterInitialization(index)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 109 | Branch(2, NegateCondition(cond), src1, src2); |
| 110 | sw(source, MemOperand(s6, index << kPointerSizeLog2)); |
| 111 | } |
| 112 | |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 113 | void MacroAssembler::PushCommonFrame(Register marker_reg) { |
| 114 | if (marker_reg.is_valid()) { |
| 115 | Push(ra, fp, marker_reg); |
| 116 | Addu(fp, sp, Operand(kPointerSize)); |
| 117 | } else { |
| 118 | Push(ra, fp); |
| 119 | mov(fp, sp); |
| 120 | } |
| 121 | } |
| 122 | |
| 123 | void MacroAssembler::PopCommonFrame(Register marker_reg) { |
| 124 | if (marker_reg.is_valid()) { |
| 125 | Pop(ra, fp, marker_reg); |
| 126 | } else { |
| 127 | Pop(ra, fp); |
| 128 | } |
| 129 | } |
| 130 | |
| 131 | void MacroAssembler::PushStandardFrame(Register function_reg) { |
| 132 | int offset = -StandardFrameConstants::kContextOffset; |
| 133 | if (function_reg.is_valid()) { |
| 134 | Push(ra, fp, cp, function_reg); |
| 135 | offset += kPointerSize; |
| 136 | } else { |
| 137 | Push(ra, fp, cp); |
| 138 | } |
| 139 | Addu(fp, sp, Operand(offset)); |
| 140 | } |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 141 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 142 | // Push and pop all registers that can hold pointers. |
| 143 | void MacroAssembler::PushSafepointRegisters() { |
| 144 | // Safepoints expect a block of kNumSafepointRegisters values on the |
| 145 | // stack, so adjust the stack for unsaved registers. |
| 146 | const int num_unsaved = kNumSafepointRegisters - kNumSafepointSavedRegisters; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 147 | DCHECK(num_unsaved >= 0); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 148 | if (num_unsaved > 0) { |
| 149 | Subu(sp, sp, Operand(num_unsaved * kPointerSize)); |
| 150 | } |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 151 | MultiPush(kSafepointSavedRegisters); |
| 152 | } |
| 153 | |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 154 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 155 | void MacroAssembler::PopSafepointRegisters() { |
| 156 | const int num_unsaved = kNumSafepointRegisters - kNumSafepointSavedRegisters; |
| 157 | MultiPop(kSafepointSavedRegisters); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 158 | if (num_unsaved > 0) { |
| 159 | Addu(sp, sp, Operand(num_unsaved * kPointerSize)); |
| 160 | } |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 161 | } |
| 162 | |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 163 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 164 | void MacroAssembler::StoreToSafepointRegisterSlot(Register src, Register dst) { |
| 165 | sw(src, SafepointRegisterSlot(dst)); |
| 166 | } |
| 167 | |
| 168 | |
| 169 | void MacroAssembler::LoadFromSafepointRegisterSlot(Register dst, Register src) { |
| 170 | lw(dst, SafepointRegisterSlot(src)); |
| 171 | } |
| 172 | |
| 173 | |
| 174 | int MacroAssembler::SafepointRegisterStackIndex(int reg_code) { |
| 175 | // The registers are pushed starting with the highest encoding, |
| 176 | // which means that lowest encodings are closest to the stack pointer. |
| 177 | return kSafepointRegisterStackIndexMap[reg_code]; |
| 178 | } |
| 179 | |
| 180 | |
| 181 | MemOperand MacroAssembler::SafepointRegisterSlot(Register reg) { |
| 182 | return MemOperand(sp, SafepointRegisterStackIndex(reg.code()) * kPointerSize); |
| 183 | } |
| 184 | |
| 185 | |
| 186 | MemOperand MacroAssembler::SafepointRegistersAndDoublesSlot(Register reg) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 187 | UNIMPLEMENTED_MIPS(); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 188 | // General purpose registers are pushed last on the stack. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 189 | int doubles_size = DoubleRegister::kMaxNumRegisters * kDoubleSize; |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 190 | int register_offset = SafepointRegisterStackIndex(reg.code()) * kPointerSize; |
| 191 | return MemOperand(sp, doubles_size + register_offset); |
| 192 | } |
| 193 | |
| 194 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 195 | void MacroAssembler::InNewSpace(Register object, |
| 196 | Register scratch, |
| 197 | Condition cc, |
| 198 | Label* branch) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 199 | DCHECK(cc == eq || cc == ne); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 200 | const int mask = |
| 201 | 1 << MemoryChunk::IN_FROM_SPACE | 1 << MemoryChunk::IN_TO_SPACE; |
| 202 | CheckPageFlag(object, scratch, mask, cc, branch); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 203 | } |
| 204 | |
| 205 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 206 | // Clobbers object, dst, value, and ra, if (ra_status == kRAHasBeenSaved) |
| 207 | // The register 'object' contains a heap object pointer. The heap object |
| 208 | // tag is shifted away. |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 209 | void MacroAssembler::RecordWriteField( |
| 210 | Register object, |
| 211 | int offset, |
| 212 | Register value, |
| 213 | Register dst, |
| 214 | RAStatus ra_status, |
| 215 | SaveFPRegsMode save_fp, |
| 216 | RememberedSetAction remembered_set_action, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 217 | SmiCheck smi_check, |
| 218 | PointersToHereCheck pointers_to_here_check_for_value) { |
| 219 | DCHECK(!AreAliased(value, dst, t8, object)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 220 | // First, check if a write barrier is even needed. The tests below |
| 221 | // catch stores of Smis. |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 222 | Label done; |
| 223 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 224 | // Skip barrier if writing a smi. |
| 225 | if (smi_check == INLINE_SMI_CHECK) { |
| 226 | JumpIfSmi(value, &done); |
| 227 | } |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 228 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 229 | // Although the object register is tagged, the offset is relative to the start |
| 230 | // of the object, so so offset must be a multiple of kPointerSize. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 231 | DCHECK(IsAligned(offset, kPointerSize)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 232 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 233 | Addu(dst, object, Operand(offset - kHeapObjectTag)); |
| 234 | if (emit_debug_code()) { |
| 235 | Label ok; |
| 236 | And(t8, dst, Operand((1 << kPointerSizeLog2) - 1)); |
| 237 | Branch(&ok, eq, t8, Operand(zero_reg)); |
| 238 | stop("Unaligned cell in write barrier"); |
| 239 | bind(&ok); |
| 240 | } |
| 241 | |
| 242 | RecordWrite(object, |
| 243 | dst, |
| 244 | value, |
| 245 | ra_status, |
| 246 | save_fp, |
| 247 | remembered_set_action, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 248 | OMIT_SMI_CHECK, |
| 249 | pointers_to_here_check_for_value); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 250 | |
| 251 | bind(&done); |
| 252 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 253 | // Clobber clobbered input registers when running with the debug-code flag |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 254 | // turned on to provoke errors. |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 255 | if (emit_debug_code()) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 256 | li(value, Operand(bit_cast<int32_t>(kZapValue + 4))); |
| 257 | li(dst, Operand(bit_cast<int32_t>(kZapValue + 8))); |
| 258 | } |
| 259 | } |
| 260 | |
| 261 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 262 | // Clobbers object, dst, map, and ra, if (ra_status == kRAHasBeenSaved) |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 263 | void MacroAssembler::RecordWriteForMap(Register object, |
| 264 | Register map, |
| 265 | Register dst, |
| 266 | RAStatus ra_status, |
| 267 | SaveFPRegsMode fp_mode) { |
| 268 | if (emit_debug_code()) { |
| 269 | DCHECK(!dst.is(at)); |
| 270 | lw(dst, FieldMemOperand(map, HeapObject::kMapOffset)); |
| 271 | Check(eq, |
| 272 | kWrongAddressOrValuePassedToRecordWrite, |
| 273 | dst, |
| 274 | Operand(isolate()->factory()->meta_map())); |
| 275 | } |
| 276 | |
| 277 | if (!FLAG_incremental_marking) { |
| 278 | return; |
| 279 | } |
| 280 | |
| 281 | if (emit_debug_code()) { |
| 282 | lw(at, FieldMemOperand(object, HeapObject::kMapOffset)); |
| 283 | Check(eq, |
| 284 | kWrongAddressOrValuePassedToRecordWrite, |
| 285 | map, |
| 286 | Operand(at)); |
| 287 | } |
| 288 | |
| 289 | Label done; |
| 290 | |
| 291 | // A single check of the map's pages interesting flag suffices, since it is |
| 292 | // only set during incremental collection, and then it's also guaranteed that |
| 293 | // the from object's page's interesting flag is also set. This optimization |
| 294 | // relies on the fact that maps can never be in new space. |
| 295 | CheckPageFlag(map, |
| 296 | map, // Used as scratch. |
| 297 | MemoryChunk::kPointersToHereAreInterestingMask, |
| 298 | eq, |
| 299 | &done); |
| 300 | |
| 301 | Addu(dst, object, Operand(HeapObject::kMapOffset - kHeapObjectTag)); |
| 302 | if (emit_debug_code()) { |
| 303 | Label ok; |
| 304 | And(at, dst, Operand((1 << kPointerSizeLog2) - 1)); |
| 305 | Branch(&ok, eq, at, Operand(zero_reg)); |
| 306 | stop("Unaligned cell in write barrier"); |
| 307 | bind(&ok); |
| 308 | } |
| 309 | |
| 310 | // Record the actual write. |
| 311 | if (ra_status == kRAHasNotBeenSaved) { |
| 312 | push(ra); |
| 313 | } |
| 314 | RecordWriteStub stub(isolate(), object, map, dst, OMIT_REMEMBERED_SET, |
| 315 | fp_mode); |
| 316 | CallStub(&stub); |
| 317 | if (ra_status == kRAHasNotBeenSaved) { |
| 318 | pop(ra); |
| 319 | } |
| 320 | |
| 321 | bind(&done); |
| 322 | |
| 323 | // Count number of write barriers in generated code. |
| 324 | isolate()->counters()->write_barriers_static()->Increment(); |
| 325 | IncrementCounter(isolate()->counters()->write_barriers_dynamic(), 1, at, dst); |
| 326 | |
| 327 | // Clobber clobbered registers when running with the debug-code flag |
| 328 | // turned on to provoke errors. |
| 329 | if (emit_debug_code()) { |
| 330 | li(dst, Operand(bit_cast<int32_t>(kZapValue + 12))); |
| 331 | li(map, Operand(bit_cast<int32_t>(kZapValue + 16))); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 332 | } |
| 333 | } |
| 334 | |
| 335 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 336 | // Clobbers object, address, value, and ra, if (ra_status == kRAHasBeenSaved) |
| 337 | // The register 'object' contains a heap object pointer. The heap object |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 338 | // tag is shifted away. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 339 | void MacroAssembler::RecordWrite( |
| 340 | Register object, |
| 341 | Register address, |
| 342 | Register value, |
| 343 | RAStatus ra_status, |
| 344 | SaveFPRegsMode fp_mode, |
| 345 | RememberedSetAction remembered_set_action, |
| 346 | SmiCheck smi_check, |
| 347 | PointersToHereCheck pointers_to_here_check_for_value) { |
| 348 | DCHECK(!AreAliased(object, address, value, t8)); |
| 349 | DCHECK(!AreAliased(object, address, value, t9)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 350 | |
| 351 | if (emit_debug_code()) { |
| 352 | lw(at, MemOperand(address)); |
| 353 | Assert( |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 354 | eq, kWrongAddressOrValuePassedToRecordWrite, at, Operand(value)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 355 | } |
Ben Murdoch | c7cc028 | 2012-03-05 14:35:55 +0000 | [diff] [blame] | 356 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 357 | if (remembered_set_action == OMIT_REMEMBERED_SET && |
| 358 | !FLAG_incremental_marking) { |
| 359 | return; |
| 360 | } |
| 361 | |
| 362 | // First, check if a write barrier is even needed. The tests below |
| 363 | // catch stores of smis and stores into the young generation. |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 364 | Label done; |
| 365 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 366 | if (smi_check == INLINE_SMI_CHECK) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 367 | DCHECK_EQ(0, kSmiTag); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 368 | JumpIfSmi(value, &done); |
| 369 | } |
| 370 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 371 | if (pointers_to_here_check_for_value != kPointersToHereAreAlwaysInteresting) { |
| 372 | CheckPageFlag(value, |
| 373 | value, // Used as scratch. |
| 374 | MemoryChunk::kPointersToHereAreInterestingMask, |
| 375 | eq, |
| 376 | &done); |
| 377 | } |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 378 | CheckPageFlag(object, |
| 379 | value, // Used as scratch. |
| 380 | MemoryChunk::kPointersFromHereAreInterestingMask, |
| 381 | eq, |
| 382 | &done); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 383 | |
| 384 | // Record the actual write. |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 385 | if (ra_status == kRAHasNotBeenSaved) { |
| 386 | push(ra); |
| 387 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 388 | RecordWriteStub stub(isolate(), object, value, address, remembered_set_action, |
| 389 | fp_mode); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 390 | CallStub(&stub); |
| 391 | if (ra_status == kRAHasNotBeenSaved) { |
| 392 | pop(ra); |
| 393 | } |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 394 | |
| 395 | bind(&done); |
| 396 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 397 | // Count number of write barriers in generated code. |
| 398 | isolate()->counters()->write_barriers_static()->Increment(); |
| 399 | IncrementCounter(isolate()->counters()->write_barriers_dynamic(), 1, at, |
| 400 | value); |
| 401 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 402 | // Clobber clobbered registers when running with the debug-code flag |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 403 | // turned on to provoke errors. |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 404 | if (emit_debug_code()) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 405 | li(address, Operand(bit_cast<int32_t>(kZapValue + 12))); |
| 406 | li(value, Operand(bit_cast<int32_t>(kZapValue + 16))); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 407 | } |
| 408 | } |
| 409 | |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 410 | void MacroAssembler::RecordWriteCodeEntryField(Register js_function, |
| 411 | Register code_entry, |
| 412 | Register scratch) { |
| 413 | const int offset = JSFunction::kCodeEntryOffset; |
| 414 | |
| 415 | // Since a code entry (value) is always in old space, we don't need to update |
| 416 | // remembered set. If incremental marking is off, there is nothing for us to |
| 417 | // do. |
| 418 | if (!FLAG_incremental_marking) return; |
| 419 | |
| 420 | DCHECK(js_function.is(a1)); |
| 421 | DCHECK(code_entry.is(t0)); |
| 422 | DCHECK(scratch.is(t1)); |
| 423 | AssertNotSmi(js_function); |
| 424 | |
| 425 | if (emit_debug_code()) { |
| 426 | Addu(scratch, js_function, Operand(offset - kHeapObjectTag)); |
| 427 | lw(at, MemOperand(scratch)); |
| 428 | Assert(eq, kWrongAddressOrValuePassedToRecordWrite, at, |
| 429 | Operand(code_entry)); |
| 430 | } |
| 431 | |
| 432 | // First, check if a write barrier is even needed. The tests below |
| 433 | // catch stores of Smis and stores into young gen. |
| 434 | Label done; |
| 435 | |
| 436 | CheckPageFlag(code_entry, scratch, |
| 437 | MemoryChunk::kPointersToHereAreInterestingMask, eq, &done); |
| 438 | CheckPageFlag(js_function, scratch, |
| 439 | MemoryChunk::kPointersFromHereAreInterestingMask, eq, &done); |
| 440 | |
| 441 | const Register dst = scratch; |
| 442 | Addu(dst, js_function, Operand(offset - kHeapObjectTag)); |
| 443 | |
| 444 | // Save caller-saved registers. js_function and code_entry are in the |
| 445 | // caller-saved register list. |
| 446 | DCHECK(kJSCallerSaved & js_function.bit()); |
| 447 | DCHECK(kJSCallerSaved & code_entry.bit()); |
| 448 | MultiPush(kJSCallerSaved | ra.bit()); |
| 449 | |
| 450 | int argument_count = 3; |
| 451 | |
| 452 | PrepareCallCFunction(argument_count, 0, code_entry); |
| 453 | |
| 454 | mov(a0, js_function); |
| 455 | mov(a1, dst); |
| 456 | li(a2, Operand(ExternalReference::isolate_address(isolate()))); |
| 457 | |
| 458 | { |
| 459 | AllowExternalCallThatCantCauseGC scope(this); |
| 460 | CallCFunction( |
| 461 | ExternalReference::incremental_marking_record_write_code_entry_function( |
| 462 | isolate()), |
| 463 | argument_count); |
| 464 | } |
| 465 | |
| 466 | // Restore caller-saved registers. |
| 467 | MultiPop(kJSCallerSaved | ra.bit()); |
| 468 | |
| 469 | bind(&done); |
| 470 | } |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 471 | |
| 472 | void MacroAssembler::RememberedSetHelper(Register object, // For debug tests. |
| 473 | Register address, |
| 474 | Register scratch, |
| 475 | SaveFPRegsMode fp_mode, |
| 476 | RememberedSetFinalAction and_then) { |
| 477 | Label done; |
| 478 | if (emit_debug_code()) { |
| 479 | Label ok; |
| 480 | JumpIfNotInNewSpace(object, scratch, &ok); |
| 481 | stop("Remembered set pointer is in new space"); |
| 482 | bind(&ok); |
| 483 | } |
| 484 | // Load store buffer top. |
| 485 | ExternalReference store_buffer = |
| 486 | ExternalReference::store_buffer_top(isolate()); |
| 487 | li(t8, Operand(store_buffer)); |
| 488 | lw(scratch, MemOperand(t8)); |
| 489 | // Store pointer to buffer and increment buffer top. |
| 490 | sw(address, MemOperand(scratch)); |
| 491 | Addu(scratch, scratch, kPointerSize); |
| 492 | // Write back new top of buffer. |
| 493 | sw(scratch, MemOperand(t8)); |
| 494 | // Call stub on end of buffer. |
| 495 | // Check for end of buffer. |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 496 | And(t8, scratch, Operand(StoreBuffer::kStoreBufferMask)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 497 | if (and_then == kFallThroughAtEnd) { |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 498 | Branch(&done, ne, t8, Operand(zero_reg)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 499 | } else { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 500 | DCHECK(and_then == kReturnAtEnd); |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 501 | Ret(ne, t8, Operand(zero_reg)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 502 | } |
| 503 | push(ra); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 504 | StoreBufferOverflowStub store_buffer_overflow(isolate(), fp_mode); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 505 | CallStub(&store_buffer_overflow); |
| 506 | pop(ra); |
| 507 | bind(&done); |
| 508 | if (and_then == kReturnAtEnd) { |
| 509 | Ret(); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 510 | } |
| 511 | } |
| 512 | |
| 513 | |
| 514 | // ----------------------------------------------------------------------------- |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 515 | // Allocation support. |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 516 | |
| 517 | |
| 518 | void MacroAssembler::CheckAccessGlobalProxy(Register holder_reg, |
| 519 | Register scratch, |
| 520 | Label* miss) { |
| 521 | Label same_contexts; |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 522 | Register temporary = t8; |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 523 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 524 | DCHECK(!holder_reg.is(scratch)); |
| 525 | DCHECK(!holder_reg.is(at)); |
| 526 | DCHECK(!scratch.is(at)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 527 | |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 528 | // Load current lexical context from the active StandardFrame, which |
| 529 | // may require crawling past STUB frames. |
| 530 | Label load_context; |
| 531 | Label has_context; |
| 532 | mov(at, fp); |
| 533 | bind(&load_context); |
| 534 | lw(scratch, MemOperand(at, CommonFrameConstants::kContextOrFrameTypeOffset)); |
| 535 | // Passing temporary register, otherwise JumpIfNotSmi modifies register at. |
| 536 | JumpIfNotSmi(scratch, &has_context, temporary); |
| 537 | lw(at, MemOperand(at, CommonFrameConstants::kCallerFPOffset)); |
| 538 | Branch(&load_context); |
| 539 | bind(&has_context); |
| 540 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 541 | // In debug mode, make sure the lexical context is set. |
| 542 | #ifdef DEBUG |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 543 | Check(ne, kWeShouldNotHaveAnEmptyLexicalContext, |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 544 | scratch, Operand(zero_reg)); |
| 545 | #endif |
| 546 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 547 | // Load the native context of the current context. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 548 | lw(scratch, ContextMemOperand(scratch, Context::NATIVE_CONTEXT_INDEX)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 549 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 550 | // Check the context is a native context. |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 551 | if (emit_debug_code()) { |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 552 | push(holder_reg); // Temporarily save holder on the stack. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 553 | // Read the first word and compare to the native_context_map. |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 554 | lw(holder_reg, FieldMemOperand(scratch, HeapObject::kMapOffset)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 555 | LoadRoot(at, Heap::kNativeContextMapRootIndex); |
| 556 | Check(eq, kJSGlobalObjectNativeContextShouldBeANativeContext, |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 557 | holder_reg, Operand(at)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 558 | pop(holder_reg); // Restore holder. |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 559 | } |
| 560 | |
| 561 | // Check if both contexts are the same. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 562 | lw(at, FieldMemOperand(holder_reg, JSGlobalProxy::kNativeContextOffset)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 563 | Branch(&same_contexts, eq, scratch, Operand(at)); |
| 564 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 565 | // Check the context is a native context. |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 566 | if (emit_debug_code()) { |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 567 | push(holder_reg); // Temporarily save holder on the stack. |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 568 | mov(holder_reg, at); // Move at to its holding place. |
| 569 | LoadRoot(at, Heap::kNullValueRootIndex); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 570 | Check(ne, kJSGlobalProxyContextShouldNotBeNull, |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 571 | holder_reg, Operand(at)); |
| 572 | |
| 573 | lw(holder_reg, FieldMemOperand(holder_reg, HeapObject::kMapOffset)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 574 | LoadRoot(at, Heap::kNativeContextMapRootIndex); |
| 575 | Check(eq, kJSGlobalObjectNativeContextShouldBeANativeContext, |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 576 | holder_reg, Operand(at)); |
| 577 | // Restore at is not needed. at is reloaded below. |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 578 | pop(holder_reg); // Restore holder. |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 579 | // Restore at to holder's context. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 580 | lw(at, FieldMemOperand(holder_reg, JSGlobalProxy::kNativeContextOffset)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 581 | } |
| 582 | |
| 583 | // Check that the security token in the calling global object is |
| 584 | // compatible with the security token in the receiving global |
| 585 | // object. |
| 586 | int token_offset = Context::kHeaderSize + |
| 587 | Context::SECURITY_TOKEN_INDEX * kPointerSize; |
| 588 | |
| 589 | lw(scratch, FieldMemOperand(scratch, token_offset)); |
| 590 | lw(at, FieldMemOperand(at, token_offset)); |
| 591 | Branch(miss, ne, scratch, Operand(at)); |
| 592 | |
| 593 | bind(&same_contexts); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 594 | } |
| 595 | |
| 596 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 597 | // Compute the hash code from the untagged key. This must be kept in sync with |
| 598 | // ComputeIntegerHash in utils.h and KeyedLoadGenericStub in |
| 599 | // code-stub-hydrogen.cc |
Ben Murdoch | c7cc028 | 2012-03-05 14:35:55 +0000 | [diff] [blame] | 600 | void MacroAssembler::GetNumberHash(Register reg0, Register scratch) { |
| 601 | // First of all we assign the hash seed to scratch. |
| 602 | LoadRoot(scratch, Heap::kHashSeedRootIndex); |
| 603 | SmiUntag(scratch); |
| 604 | |
| 605 | // Xor original key with a seed. |
| 606 | xor_(reg0, reg0, scratch); |
| 607 | |
| 608 | // Compute the hash code from the untagged key. This must be kept in sync |
| 609 | // with ComputeIntegerHash in utils.h. |
| 610 | // |
| 611 | // hash = ~hash + (hash << 15); |
| 612 | nor(scratch, reg0, zero_reg); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 613 | Lsa(reg0, scratch, reg0, 15); |
Ben Murdoch | c7cc028 | 2012-03-05 14:35:55 +0000 | [diff] [blame] | 614 | |
| 615 | // hash = hash ^ (hash >> 12); |
| 616 | srl(at, reg0, 12); |
| 617 | xor_(reg0, reg0, at); |
| 618 | |
| 619 | // hash = hash + (hash << 2); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 620 | Lsa(reg0, reg0, reg0, 2); |
Ben Murdoch | c7cc028 | 2012-03-05 14:35:55 +0000 | [diff] [blame] | 621 | |
| 622 | // hash = hash ^ (hash >> 4); |
| 623 | srl(at, reg0, 4); |
| 624 | xor_(reg0, reg0, at); |
| 625 | |
| 626 | // hash = hash * 2057; |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 627 | sll(scratch, reg0, 11); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 628 | Lsa(reg0, reg0, reg0, 3); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 629 | addu(reg0, reg0, scratch); |
Ben Murdoch | c7cc028 | 2012-03-05 14:35:55 +0000 | [diff] [blame] | 630 | |
| 631 | // hash = hash ^ (hash >> 16); |
| 632 | srl(at, reg0, 16); |
| 633 | xor_(reg0, reg0, at); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 634 | And(reg0, reg0, Operand(0x3fffffff)); |
Ben Murdoch | c7cc028 | 2012-03-05 14:35:55 +0000 | [diff] [blame] | 635 | } |
| 636 | |
| 637 | |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 638 | void MacroAssembler::LoadFromNumberDictionary(Label* miss, |
| 639 | Register elements, |
| 640 | Register key, |
| 641 | Register result, |
| 642 | Register reg0, |
| 643 | Register reg1, |
| 644 | Register reg2) { |
| 645 | // Register use: |
| 646 | // |
| 647 | // elements - holds the slow-case elements of the receiver on entry. |
| 648 | // Unchanged unless 'result' is the same register. |
| 649 | // |
| 650 | // key - holds the smi key on entry. |
| 651 | // Unchanged unless 'result' is the same register. |
| 652 | // |
| 653 | // |
| 654 | // result - holds the result on exit if the load succeeded. |
| 655 | // Allowed to be the same as 'key' or 'result'. |
| 656 | // Unchanged on bailout so 'key' or 'result' can be used |
| 657 | // in further computation. |
| 658 | // |
| 659 | // Scratch registers: |
| 660 | // |
| 661 | // reg0 - holds the untagged key on entry and holds the hash once computed. |
| 662 | // |
| 663 | // reg1 - Used to hold the capacity mask of the dictionary. |
| 664 | // |
| 665 | // reg2 - Used for the index into the dictionary. |
| 666 | // at - Temporary (avoid MacroAssembler instructions also using 'at'). |
| 667 | Label done; |
| 668 | |
Ben Murdoch | c7cc028 | 2012-03-05 14:35:55 +0000 | [diff] [blame] | 669 | GetNumberHash(reg0, reg1); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 670 | |
| 671 | // Compute the capacity mask. |
Ben Murdoch | c7cc028 | 2012-03-05 14:35:55 +0000 | [diff] [blame] | 672 | lw(reg1, FieldMemOperand(elements, SeededNumberDictionary::kCapacityOffset)); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 673 | sra(reg1, reg1, kSmiTagSize); |
| 674 | Subu(reg1, reg1, Operand(1)); |
| 675 | |
| 676 | // Generate an unrolled loop that performs a few probes before giving up. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 677 | for (int i = 0; i < kNumberDictionaryProbes; i++) { |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 678 | // Use reg2 for index calculations and keep the hash intact in reg0. |
| 679 | mov(reg2, reg0); |
| 680 | // Compute the masked index: (hash + i + i * i) & mask. |
| 681 | if (i > 0) { |
Ben Murdoch | c7cc028 | 2012-03-05 14:35:55 +0000 | [diff] [blame] | 682 | Addu(reg2, reg2, Operand(SeededNumberDictionary::GetProbeOffset(i))); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 683 | } |
| 684 | and_(reg2, reg2, reg1); |
| 685 | |
| 686 | // Scale the index by multiplying by the element size. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 687 | DCHECK(SeededNumberDictionary::kEntrySize == 3); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 688 | Lsa(reg2, reg2, reg2, 1); // reg2 = reg2 * 3. |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 689 | |
| 690 | // Check if the key is identical to the name. |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 691 | Lsa(reg2, elements, reg2, kPointerSizeLog2); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 692 | |
Ben Murdoch | c7cc028 | 2012-03-05 14:35:55 +0000 | [diff] [blame] | 693 | lw(at, FieldMemOperand(reg2, SeededNumberDictionary::kElementsStartOffset)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 694 | if (i != kNumberDictionaryProbes - 1) { |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 695 | Branch(&done, eq, key, Operand(at)); |
| 696 | } else { |
| 697 | Branch(miss, ne, key, Operand(at)); |
| 698 | } |
| 699 | } |
| 700 | |
| 701 | bind(&done); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 702 | // Check that the value is a field property. |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 703 | // reg2: elements + (index * kPointerSize). |
| 704 | const int kDetailsOffset = |
Ben Murdoch | c7cc028 | 2012-03-05 14:35:55 +0000 | [diff] [blame] | 705 | SeededNumberDictionary::kElementsStartOffset + 2 * kPointerSize; |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 706 | lw(reg1, FieldMemOperand(reg2, kDetailsOffset)); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 707 | DCHECK_EQ(DATA, 0); |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 708 | And(at, reg1, Operand(Smi::FromInt(PropertyDetails::TypeField::kMask))); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 709 | Branch(miss, ne, at, Operand(zero_reg)); |
| 710 | |
| 711 | // Get the value at the masked, scaled index and return. |
| 712 | const int kValueOffset = |
Ben Murdoch | c7cc028 | 2012-03-05 14:35:55 +0000 | [diff] [blame] | 713 | SeededNumberDictionary::kElementsStartOffset + kPointerSize; |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 714 | lw(result, FieldMemOperand(reg2, kValueOffset)); |
| 715 | } |
| 716 | |
| 717 | |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 718 | // --------------------------------------------------------------------------- |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 719 | // Instruction macros. |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 720 | |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 721 | void MacroAssembler::Addu(Register rd, Register rs, const Operand& rt) { |
| 722 | if (rt.is_reg()) { |
| 723 | addu(rd, rs, rt.rm()); |
| 724 | } else { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 725 | if (is_int16(rt.imm32_) && !MustUseReg(rt.rmode_)) { |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 726 | addiu(rd, rs, rt.imm32_); |
| 727 | } else { |
| 728 | // li handles the relocation. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 729 | DCHECK(!rs.is(at)); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 730 | li(at, rt); |
| 731 | addu(rd, rs, at); |
| 732 | } |
| 733 | } |
| 734 | } |
| 735 | |
| 736 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 737 | void MacroAssembler::Subu(Register rd, Register rs, const Operand& rt) { |
| 738 | if (rt.is_reg()) { |
| 739 | subu(rd, rs, rt.rm()); |
| 740 | } else { |
| 741 | if (is_int16(rt.imm32_) && !MustUseReg(rt.rmode_)) { |
| 742 | addiu(rd, rs, -rt.imm32_); // No subiu instr, use addiu(x, y, -imm). |
| 743 | } else { |
| 744 | // li handles the relocation. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 745 | DCHECK(!rs.is(at)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 746 | li(at, rt); |
| 747 | subu(rd, rs, at); |
| 748 | } |
| 749 | } |
| 750 | } |
| 751 | |
| 752 | |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 753 | void MacroAssembler::Mul(Register rd, Register rs, const Operand& rt) { |
| 754 | if (rt.is_reg()) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 755 | if (IsMipsArchVariant(kLoongson)) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 756 | mult(rs, rt.rm()); |
| 757 | mflo(rd); |
| 758 | } else { |
| 759 | mul(rd, rs, rt.rm()); |
| 760 | } |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 761 | } else { |
| 762 | // li handles the relocation. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 763 | DCHECK(!rs.is(at)); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 764 | li(at, rt); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 765 | if (IsMipsArchVariant(kLoongson)) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 766 | mult(rs, at); |
| 767 | mflo(rd); |
| 768 | } else { |
| 769 | mul(rd, rs, at); |
| 770 | } |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 771 | } |
| 772 | } |
| 773 | |
| 774 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 775 | void MacroAssembler::Mul(Register rd_hi, Register rd_lo, |
| 776 | Register rs, const Operand& rt) { |
| 777 | if (rt.is_reg()) { |
| 778 | if (!IsMipsArchVariant(kMips32r6)) { |
| 779 | mult(rs, rt.rm()); |
| 780 | mflo(rd_lo); |
| 781 | mfhi(rd_hi); |
| 782 | } else { |
| 783 | if (rd_lo.is(rs)) { |
| 784 | DCHECK(!rd_hi.is(rs)); |
| 785 | DCHECK(!rd_hi.is(rt.rm()) && !rd_lo.is(rt.rm())); |
| 786 | muh(rd_hi, rs, rt.rm()); |
| 787 | mul(rd_lo, rs, rt.rm()); |
| 788 | } else { |
| 789 | DCHECK(!rd_hi.is(rt.rm()) && !rd_lo.is(rt.rm())); |
| 790 | mul(rd_lo, rs, rt.rm()); |
| 791 | muh(rd_hi, rs, rt.rm()); |
| 792 | } |
| 793 | } |
| 794 | } else { |
| 795 | // li handles the relocation. |
| 796 | DCHECK(!rs.is(at)); |
| 797 | li(at, rt); |
| 798 | if (!IsMipsArchVariant(kMips32r6)) { |
| 799 | mult(rs, at); |
| 800 | mflo(rd_lo); |
| 801 | mfhi(rd_hi); |
| 802 | } else { |
| 803 | if (rd_lo.is(rs)) { |
| 804 | DCHECK(!rd_hi.is(rs)); |
| 805 | DCHECK(!rd_hi.is(at) && !rd_lo.is(at)); |
| 806 | muh(rd_hi, rs, at); |
| 807 | mul(rd_lo, rs, at); |
| 808 | } else { |
| 809 | DCHECK(!rd_hi.is(at) && !rd_lo.is(at)); |
| 810 | mul(rd_lo, rs, at); |
| 811 | muh(rd_hi, rs, at); |
| 812 | } |
| 813 | } |
| 814 | } |
| 815 | } |
| 816 | |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 817 | void MacroAssembler::Mulu(Register rd_hi, Register rd_lo, Register rs, |
| 818 | const Operand& rt) { |
| 819 | Register reg; |
| 820 | if (rt.is_reg()) { |
| 821 | reg = rt.rm(); |
| 822 | } else { |
| 823 | DCHECK(!rs.is(at)); |
| 824 | reg = at; |
| 825 | li(reg, rt); |
| 826 | } |
| 827 | |
| 828 | if (!IsMipsArchVariant(kMips32r6)) { |
| 829 | multu(rs, reg); |
| 830 | mflo(rd_lo); |
| 831 | mfhi(rd_hi); |
| 832 | } else { |
| 833 | if (rd_lo.is(rs)) { |
| 834 | DCHECK(!rd_hi.is(rs)); |
| 835 | DCHECK(!rd_hi.is(reg) && !rd_lo.is(reg)); |
| 836 | muhu(rd_hi, rs, reg); |
| 837 | mulu(rd_lo, rs, reg); |
| 838 | } else { |
| 839 | DCHECK(!rd_hi.is(reg) && !rd_lo.is(reg)); |
| 840 | mulu(rd_lo, rs, reg); |
| 841 | muhu(rd_hi, rs, reg); |
| 842 | } |
| 843 | } |
| 844 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 845 | |
| 846 | void MacroAssembler::Mulh(Register rd, Register rs, const Operand& rt) { |
| 847 | if (rt.is_reg()) { |
| 848 | if (!IsMipsArchVariant(kMips32r6)) { |
| 849 | mult(rs, rt.rm()); |
| 850 | mfhi(rd); |
| 851 | } else { |
| 852 | muh(rd, rs, rt.rm()); |
| 853 | } |
| 854 | } else { |
| 855 | // li handles the relocation. |
| 856 | DCHECK(!rs.is(at)); |
| 857 | li(at, rt); |
| 858 | if (!IsMipsArchVariant(kMips32r6)) { |
| 859 | mult(rs, at); |
| 860 | mfhi(rd); |
| 861 | } else { |
| 862 | muh(rd, rs, at); |
| 863 | } |
| 864 | } |
| 865 | } |
| 866 | |
| 867 | |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 868 | void MacroAssembler::Mult(Register rs, const Operand& rt) { |
| 869 | if (rt.is_reg()) { |
| 870 | mult(rs, rt.rm()); |
| 871 | } else { |
| 872 | // li handles the relocation. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 873 | DCHECK(!rs.is(at)); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 874 | li(at, rt); |
| 875 | mult(rs, at); |
| 876 | } |
| 877 | } |
| 878 | |
| 879 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 880 | void MacroAssembler::Mulhu(Register rd, Register rs, const Operand& rt) { |
| 881 | if (rt.is_reg()) { |
| 882 | if (!IsMipsArchVariant(kMips32r6)) { |
| 883 | multu(rs, rt.rm()); |
| 884 | mfhi(rd); |
| 885 | } else { |
| 886 | muhu(rd, rs, rt.rm()); |
| 887 | } |
| 888 | } else { |
| 889 | // li handles the relocation. |
| 890 | DCHECK(!rs.is(at)); |
| 891 | li(at, rt); |
| 892 | if (!IsMipsArchVariant(kMips32r6)) { |
| 893 | multu(rs, at); |
| 894 | mfhi(rd); |
| 895 | } else { |
| 896 | muhu(rd, rs, at); |
| 897 | } |
| 898 | } |
| 899 | } |
| 900 | |
| 901 | |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 902 | void MacroAssembler::Multu(Register rs, const Operand& rt) { |
| 903 | if (rt.is_reg()) { |
| 904 | multu(rs, rt.rm()); |
| 905 | } else { |
| 906 | // li handles the relocation. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 907 | DCHECK(!rs.is(at)); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 908 | li(at, rt); |
| 909 | multu(rs, at); |
| 910 | } |
| 911 | } |
| 912 | |
| 913 | |
| 914 | void MacroAssembler::Div(Register rs, const Operand& rt) { |
| 915 | if (rt.is_reg()) { |
| 916 | div(rs, rt.rm()); |
| 917 | } else { |
| 918 | // li handles the relocation. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 919 | DCHECK(!rs.is(at)); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 920 | li(at, rt); |
| 921 | div(rs, at); |
| 922 | } |
| 923 | } |
| 924 | |
| 925 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 926 | void MacroAssembler::Div(Register rem, Register res, |
| 927 | Register rs, const Operand& rt) { |
| 928 | if (rt.is_reg()) { |
| 929 | if (!IsMipsArchVariant(kMips32r6)) { |
| 930 | div(rs, rt.rm()); |
| 931 | mflo(res); |
| 932 | mfhi(rem); |
| 933 | } else { |
| 934 | div(res, rs, rt.rm()); |
| 935 | mod(rem, rs, rt.rm()); |
| 936 | } |
| 937 | } else { |
| 938 | // li handles the relocation. |
| 939 | DCHECK(!rs.is(at)); |
| 940 | li(at, rt); |
| 941 | if (!IsMipsArchVariant(kMips32r6)) { |
| 942 | div(rs, at); |
| 943 | mflo(res); |
| 944 | mfhi(rem); |
| 945 | } else { |
| 946 | div(res, rs, at); |
| 947 | mod(rem, rs, at); |
| 948 | } |
| 949 | } |
| 950 | } |
| 951 | |
| 952 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 953 | void MacroAssembler::Div(Register res, Register rs, const Operand& rt) { |
| 954 | if (rt.is_reg()) { |
| 955 | if (!IsMipsArchVariant(kMips32r6)) { |
| 956 | div(rs, rt.rm()); |
| 957 | mflo(res); |
| 958 | } else { |
| 959 | div(res, rs, rt.rm()); |
| 960 | } |
| 961 | } else { |
| 962 | // li handles the relocation. |
| 963 | DCHECK(!rs.is(at)); |
| 964 | li(at, rt); |
| 965 | if (!IsMipsArchVariant(kMips32r6)) { |
| 966 | div(rs, at); |
| 967 | mflo(res); |
| 968 | } else { |
| 969 | div(res, rs, at); |
| 970 | } |
| 971 | } |
| 972 | } |
| 973 | |
| 974 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 975 | void MacroAssembler::Mod(Register rd, Register rs, const Operand& rt) { |
| 976 | if (rt.is_reg()) { |
| 977 | if (!IsMipsArchVariant(kMips32r6)) { |
| 978 | div(rs, rt.rm()); |
| 979 | mfhi(rd); |
| 980 | } else { |
| 981 | mod(rd, rs, rt.rm()); |
| 982 | } |
| 983 | } else { |
| 984 | // li handles the relocation. |
| 985 | DCHECK(!rs.is(at)); |
| 986 | li(at, rt); |
| 987 | if (!IsMipsArchVariant(kMips32r6)) { |
| 988 | div(rs, at); |
| 989 | mfhi(rd); |
| 990 | } else { |
| 991 | mod(rd, rs, at); |
| 992 | } |
| 993 | } |
| 994 | } |
| 995 | |
| 996 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 997 | void MacroAssembler::Modu(Register rd, Register rs, const Operand& rt) { |
| 998 | if (rt.is_reg()) { |
| 999 | if (!IsMipsArchVariant(kMips32r6)) { |
| 1000 | divu(rs, rt.rm()); |
| 1001 | mfhi(rd); |
| 1002 | } else { |
| 1003 | modu(rd, rs, rt.rm()); |
| 1004 | } |
| 1005 | } else { |
| 1006 | // li handles the relocation. |
| 1007 | DCHECK(!rs.is(at)); |
| 1008 | li(at, rt); |
| 1009 | if (!IsMipsArchVariant(kMips32r6)) { |
| 1010 | divu(rs, at); |
| 1011 | mfhi(rd); |
| 1012 | } else { |
| 1013 | modu(rd, rs, at); |
| 1014 | } |
| 1015 | } |
| 1016 | } |
| 1017 | |
| 1018 | |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1019 | void MacroAssembler::Divu(Register rs, const Operand& rt) { |
| 1020 | if (rt.is_reg()) { |
| 1021 | divu(rs, rt.rm()); |
| 1022 | } else { |
| 1023 | // li handles the relocation. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1024 | DCHECK(!rs.is(at)); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1025 | li(at, rt); |
| 1026 | divu(rs, at); |
| 1027 | } |
| 1028 | } |
| 1029 | |
| 1030 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 1031 | void MacroAssembler::Divu(Register res, Register rs, const Operand& rt) { |
| 1032 | if (rt.is_reg()) { |
| 1033 | if (!IsMipsArchVariant(kMips32r6)) { |
| 1034 | divu(rs, rt.rm()); |
| 1035 | mflo(res); |
| 1036 | } else { |
| 1037 | divu(res, rs, rt.rm()); |
| 1038 | } |
| 1039 | } else { |
| 1040 | // li handles the relocation. |
| 1041 | DCHECK(!rs.is(at)); |
| 1042 | li(at, rt); |
| 1043 | if (!IsMipsArchVariant(kMips32r6)) { |
| 1044 | divu(rs, at); |
| 1045 | mflo(res); |
| 1046 | } else { |
| 1047 | divu(res, rs, at); |
| 1048 | } |
| 1049 | } |
| 1050 | } |
| 1051 | |
| 1052 | |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1053 | void MacroAssembler::And(Register rd, Register rs, const Operand& rt) { |
| 1054 | if (rt.is_reg()) { |
| 1055 | and_(rd, rs, rt.rm()); |
| 1056 | } else { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1057 | if (is_uint16(rt.imm32_) && !MustUseReg(rt.rmode_)) { |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1058 | andi(rd, rs, rt.imm32_); |
| 1059 | } else { |
| 1060 | // li handles the relocation. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1061 | DCHECK(!rs.is(at)); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1062 | li(at, rt); |
| 1063 | and_(rd, rs, at); |
| 1064 | } |
| 1065 | } |
| 1066 | } |
| 1067 | |
| 1068 | |
| 1069 | void MacroAssembler::Or(Register rd, Register rs, const Operand& rt) { |
| 1070 | if (rt.is_reg()) { |
| 1071 | or_(rd, rs, rt.rm()); |
| 1072 | } else { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1073 | if (is_uint16(rt.imm32_) && !MustUseReg(rt.rmode_)) { |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1074 | ori(rd, rs, rt.imm32_); |
| 1075 | } else { |
| 1076 | // li handles the relocation. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1077 | DCHECK(!rs.is(at)); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1078 | li(at, rt); |
| 1079 | or_(rd, rs, at); |
| 1080 | } |
| 1081 | } |
| 1082 | } |
| 1083 | |
| 1084 | |
| 1085 | void MacroAssembler::Xor(Register rd, Register rs, const Operand& rt) { |
| 1086 | if (rt.is_reg()) { |
| 1087 | xor_(rd, rs, rt.rm()); |
| 1088 | } else { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1089 | if (is_uint16(rt.imm32_) && !MustUseReg(rt.rmode_)) { |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1090 | xori(rd, rs, rt.imm32_); |
| 1091 | } else { |
| 1092 | // li handles the relocation. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1093 | DCHECK(!rs.is(at)); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1094 | li(at, rt); |
| 1095 | xor_(rd, rs, at); |
| 1096 | } |
| 1097 | } |
| 1098 | } |
| 1099 | |
| 1100 | |
| 1101 | void MacroAssembler::Nor(Register rd, Register rs, const Operand& rt) { |
| 1102 | if (rt.is_reg()) { |
| 1103 | nor(rd, rs, rt.rm()); |
| 1104 | } else { |
| 1105 | // li handles the relocation. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1106 | DCHECK(!rs.is(at)); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1107 | li(at, rt); |
| 1108 | nor(rd, rs, at); |
| 1109 | } |
| 1110 | } |
| 1111 | |
| 1112 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1113 | void MacroAssembler::Neg(Register rs, const Operand& rt) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1114 | DCHECK(rt.is_reg()); |
| 1115 | DCHECK(!at.is(rs)); |
| 1116 | DCHECK(!at.is(rt.rm())); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1117 | li(at, -1); |
| 1118 | xor_(rs, rt.rm(), at); |
| 1119 | } |
| 1120 | |
| 1121 | |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1122 | void MacroAssembler::Slt(Register rd, Register rs, const Operand& rt) { |
| 1123 | if (rt.is_reg()) { |
| 1124 | slt(rd, rs, rt.rm()); |
| 1125 | } else { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1126 | if (is_int16(rt.imm32_) && !MustUseReg(rt.rmode_)) { |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1127 | slti(rd, rs, rt.imm32_); |
| 1128 | } else { |
| 1129 | // li handles the relocation. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1130 | DCHECK(!rs.is(at)); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1131 | li(at, rt); |
| 1132 | slt(rd, rs, at); |
| 1133 | } |
| 1134 | } |
| 1135 | } |
| 1136 | |
| 1137 | |
| 1138 | void MacroAssembler::Sltu(Register rd, Register rs, const Operand& rt) { |
| 1139 | if (rt.is_reg()) { |
| 1140 | sltu(rd, rs, rt.rm()); |
| 1141 | } else { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1142 | if (is_uint16(rt.imm32_) && !MustUseReg(rt.rmode_)) { |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1143 | sltiu(rd, rs, rt.imm32_); |
| 1144 | } else { |
| 1145 | // li handles the relocation. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1146 | DCHECK(!rs.is(at)); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1147 | li(at, rt); |
| 1148 | sltu(rd, rs, at); |
| 1149 | } |
| 1150 | } |
| 1151 | } |
| 1152 | |
| 1153 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1154 | void MacroAssembler::Ror(Register rd, Register rs, const Operand& rt) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1155 | if (IsMipsArchVariant(kMips32r2) || IsMipsArchVariant(kMips32r6)) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1156 | if (rt.is_reg()) { |
| 1157 | rotrv(rd, rs, rt.rm()); |
| 1158 | } else { |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 1159 | rotr(rd, rs, rt.imm32_ & 0x1f); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1160 | } |
| 1161 | } else { |
| 1162 | if (rt.is_reg()) { |
| 1163 | subu(at, zero_reg, rt.rm()); |
| 1164 | sllv(at, rs, at); |
| 1165 | srlv(rd, rs, rt.rm()); |
| 1166 | or_(rd, rd, at); |
| 1167 | } else { |
| 1168 | if (rt.imm32_ == 0) { |
| 1169 | srl(rd, rs, 0); |
| 1170 | } else { |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 1171 | srl(at, rs, rt.imm32_ & 0x1f); |
| 1172 | sll(rd, rs, (0x20 - (rt.imm32_ & 0x1f)) & 0x1f); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1173 | or_(rd, rd, at); |
| 1174 | } |
| 1175 | } |
| 1176 | } |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1177 | } |
| 1178 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1179 | |
| 1180 | void MacroAssembler::Pref(int32_t hint, const MemOperand& rs) { |
| 1181 | if (IsMipsArchVariant(kLoongson)) { |
| 1182 | lw(zero_reg, rs); |
| 1183 | } else { |
| 1184 | pref(hint, rs); |
| 1185 | } |
| 1186 | } |
| 1187 | |
| 1188 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1189 | void MacroAssembler::Lsa(Register rd, Register rt, Register rs, uint8_t sa, |
| 1190 | Register scratch) { |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 1191 | DCHECK(sa >= 1 && sa <= 31); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1192 | if (IsMipsArchVariant(kMips32r6) && sa <= 4) { |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 1193 | lsa(rd, rt, rs, sa - 1); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1194 | } else { |
| 1195 | Register tmp = rd.is(rt) ? scratch : rd; |
| 1196 | DCHECK(!tmp.is(rt)); |
| 1197 | sll(tmp, rs, sa); |
| 1198 | Addu(rd, rt, tmp); |
| 1199 | } |
| 1200 | } |
| 1201 | |
| 1202 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1203 | // ------------Pseudo-instructions------------- |
| 1204 | |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 1205 | // Word Swap Byte |
| 1206 | void MacroAssembler::ByteSwapSigned(Register reg, int operand_size) { |
| 1207 | DCHECK(operand_size == 1 || operand_size == 2 || operand_size == 4); |
| 1208 | if (IsMipsArchVariant(kMips32r2) || IsMipsArchVariant(kMips32r6)) { |
| 1209 | if (operand_size == 2) { |
| 1210 | seh(reg, reg); |
| 1211 | } else if (operand_size == 1) { |
| 1212 | seb(reg, reg); |
| 1213 | } |
| 1214 | // No need to do any preparation if operand_size is 4 |
| 1215 | |
| 1216 | wsbh(reg, reg); |
| 1217 | rotr(reg, reg, 16); |
| 1218 | } else if (IsMipsArchVariant(kMips32r1) || IsMipsArchVariant(kLoongson)) { |
| 1219 | if (operand_size == 1) { |
| 1220 | sll(reg, reg, 24); |
| 1221 | sra(reg, reg, 24); |
| 1222 | } else if (operand_size == 2) { |
| 1223 | sll(reg, reg, 16); |
| 1224 | sra(reg, reg, 16); |
| 1225 | } |
| 1226 | // No need to do any preparation if operand_size is 4 |
| 1227 | |
| 1228 | Register tmp = t0; |
| 1229 | Register tmp2 = t1; |
| 1230 | |
| 1231 | andi(tmp2, reg, 0xFF); |
| 1232 | sll(tmp2, tmp2, 24); |
| 1233 | or_(tmp, zero_reg, tmp2); |
| 1234 | |
| 1235 | andi(tmp2, reg, 0xFF00); |
| 1236 | sll(tmp2, tmp2, 8); |
| 1237 | or_(tmp, tmp, tmp2); |
| 1238 | |
| 1239 | srl(reg, reg, 8); |
| 1240 | andi(tmp2, reg, 0xFF00); |
| 1241 | or_(tmp, tmp, tmp2); |
| 1242 | |
| 1243 | srl(reg, reg, 16); |
| 1244 | andi(tmp2, reg, 0xFF); |
| 1245 | or_(tmp, tmp, tmp2); |
| 1246 | |
| 1247 | or_(reg, tmp, zero_reg); |
| 1248 | } |
| 1249 | } |
| 1250 | |
| 1251 | void MacroAssembler::ByteSwapUnsigned(Register reg, int operand_size) { |
| 1252 | DCHECK(operand_size == 1 || operand_size == 2); |
| 1253 | |
| 1254 | if (IsMipsArchVariant(kMips32r2) || IsMipsArchVariant(kMips32r6)) { |
| 1255 | if (operand_size == 1) { |
| 1256 | andi(reg, reg, 0xFF); |
| 1257 | } else { |
| 1258 | andi(reg, reg, 0xFFFF); |
| 1259 | } |
| 1260 | // No need to do any preparation if operand_size is 4 |
| 1261 | |
| 1262 | wsbh(reg, reg); |
| 1263 | rotr(reg, reg, 16); |
| 1264 | } else if (IsMipsArchVariant(kMips32r1) || IsMipsArchVariant(kLoongson)) { |
| 1265 | if (operand_size == 1) { |
| 1266 | sll(reg, reg, 24); |
| 1267 | } else { |
| 1268 | Register tmp = t0; |
| 1269 | |
| 1270 | andi(tmp, reg, 0xFF00); |
| 1271 | sll(reg, reg, 24); |
| 1272 | sll(tmp, tmp, 8); |
| 1273 | or_(reg, tmp, reg); |
| 1274 | } |
| 1275 | } |
| 1276 | } |
| 1277 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1278 | void MacroAssembler::Ulw(Register rd, const MemOperand& rs) { |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 1279 | DCHECK(!rd.is(at)); |
| 1280 | DCHECK(!rs.rm().is(at)); |
| 1281 | if (IsMipsArchVariant(kMips32r6)) { |
| 1282 | lw(rd, rs); |
| 1283 | } else { |
| 1284 | DCHECK(IsMipsArchVariant(kMips32r2) || IsMipsArchVariant(kMips32r1) || |
| 1285 | IsMipsArchVariant(kLoongson)); |
| 1286 | if (is_int16(rs.offset() + kMipsLwrOffset) && |
| 1287 | is_int16(rs.offset() + kMipsLwlOffset)) { |
| 1288 | if (!rd.is(rs.rm())) { |
| 1289 | lwr(rd, MemOperand(rs.rm(), rs.offset() + kMipsLwrOffset)); |
| 1290 | lwl(rd, MemOperand(rs.rm(), rs.offset() + kMipsLwlOffset)); |
| 1291 | } else { |
| 1292 | lwr(at, MemOperand(rs.rm(), rs.offset() + kMipsLwrOffset)); |
| 1293 | lwl(at, MemOperand(rs.rm(), rs.offset() + kMipsLwlOffset)); |
| 1294 | mov(rd, at); |
| 1295 | } |
| 1296 | } else { // Offset > 16 bits, use multiple instructions to load. |
| 1297 | LoadRegPlusOffsetToAt(rs); |
| 1298 | lwr(rd, MemOperand(at, kMipsLwrOffset)); |
| 1299 | lwl(rd, MemOperand(at, kMipsLwlOffset)); |
| 1300 | } |
| 1301 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1302 | } |
| 1303 | |
| 1304 | |
| 1305 | void MacroAssembler::Usw(Register rd, const MemOperand& rs) { |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 1306 | DCHECK(!rd.is(at)); |
| 1307 | DCHECK(!rs.rm().is(at)); |
| 1308 | if (IsMipsArchVariant(kMips32r6)) { |
| 1309 | sw(rd, rs); |
| 1310 | } else { |
| 1311 | DCHECK(IsMipsArchVariant(kMips32r2) || IsMipsArchVariant(kMips32r1) || |
| 1312 | IsMipsArchVariant(kLoongson)); |
| 1313 | if (is_int16(rs.offset() + kMipsSwrOffset) && |
| 1314 | is_int16(rs.offset() + kMipsSwlOffset)) { |
| 1315 | swr(rd, MemOperand(rs.rm(), rs.offset() + kMipsSwrOffset)); |
| 1316 | swl(rd, MemOperand(rs.rm(), rs.offset() + kMipsSwlOffset)); |
| 1317 | } else { |
| 1318 | LoadRegPlusOffsetToAt(rs); |
| 1319 | swr(rd, MemOperand(at, kMipsSwrOffset)); |
| 1320 | swl(rd, MemOperand(at, kMipsSwlOffset)); |
| 1321 | } |
| 1322 | } |
| 1323 | } |
| 1324 | |
| 1325 | void MacroAssembler::Ulh(Register rd, const MemOperand& rs) { |
| 1326 | DCHECK(!rd.is(at)); |
| 1327 | DCHECK(!rs.rm().is(at)); |
| 1328 | if (IsMipsArchVariant(kMips32r6)) { |
| 1329 | lh(rd, rs); |
| 1330 | } else { |
| 1331 | DCHECK(IsMipsArchVariant(kMips32r2) || IsMipsArchVariant(kMips32r1) || |
| 1332 | IsMipsArchVariant(kLoongson)); |
| 1333 | if (is_int16(rs.offset()) && is_int16(rs.offset() + 1)) { |
| 1334 | #if defined(V8_TARGET_LITTLE_ENDIAN) |
| 1335 | lbu(at, rs); |
| 1336 | lb(rd, MemOperand(rs.rm(), rs.offset() + 1)); |
| 1337 | #elif defined(V8_TARGET_BIG_ENDIAN) |
| 1338 | lbu(at, MemOperand(rs.rm(), rs.offset() + 1)); |
| 1339 | lb(rd, rs); |
| 1340 | #endif |
| 1341 | } else { // Offset > 16 bits, use multiple instructions to load. |
| 1342 | LoadRegPlusOffsetToAt(rs); |
| 1343 | #if defined(V8_TARGET_LITTLE_ENDIAN) |
| 1344 | lb(rd, MemOperand(at, 1)); |
| 1345 | lbu(at, MemOperand(at, 0)); |
| 1346 | #elif defined(V8_TARGET_BIG_ENDIAN) |
| 1347 | lb(rd, MemOperand(at, 0)); |
| 1348 | lbu(at, MemOperand(at, 1)); |
| 1349 | #endif |
| 1350 | } |
| 1351 | sll(rd, rd, 8); |
| 1352 | or_(rd, rd, at); |
| 1353 | } |
| 1354 | } |
| 1355 | |
| 1356 | void MacroAssembler::Ulhu(Register rd, const MemOperand& rs) { |
| 1357 | DCHECK(!rd.is(at)); |
| 1358 | DCHECK(!rs.rm().is(at)); |
| 1359 | if (IsMipsArchVariant(kMips32r6)) { |
| 1360 | lhu(rd, rs); |
| 1361 | } else { |
| 1362 | DCHECK(IsMipsArchVariant(kMips32r2) || IsMipsArchVariant(kMips32r1) || |
| 1363 | IsMipsArchVariant(kLoongson)); |
| 1364 | if (is_int16(rs.offset()) && is_int16(rs.offset() + 1)) { |
| 1365 | #if defined(V8_TARGET_LITTLE_ENDIAN) |
| 1366 | lbu(at, rs); |
| 1367 | lbu(rd, MemOperand(rs.rm(), rs.offset() + 1)); |
| 1368 | #elif defined(V8_TARGET_BIG_ENDIAN) |
| 1369 | lbu(at, MemOperand(rs.rm(), rs.offset() + 1)); |
| 1370 | lbu(rd, rs); |
| 1371 | #endif |
| 1372 | } else { // Offset > 16 bits, use multiple instructions to load. |
| 1373 | LoadRegPlusOffsetToAt(rs); |
| 1374 | #if defined(V8_TARGET_LITTLE_ENDIAN) |
| 1375 | lbu(rd, MemOperand(at, 1)); |
| 1376 | lbu(at, MemOperand(at, 0)); |
| 1377 | #elif defined(V8_TARGET_BIG_ENDIAN) |
| 1378 | lbu(rd, MemOperand(at, 0)); |
| 1379 | lbu(at, MemOperand(at, 1)); |
| 1380 | #endif |
| 1381 | } |
| 1382 | sll(rd, rd, 8); |
| 1383 | or_(rd, rd, at); |
| 1384 | } |
| 1385 | } |
| 1386 | |
| 1387 | void MacroAssembler::Ush(Register rd, const MemOperand& rs, Register scratch) { |
| 1388 | DCHECK(!rd.is(at)); |
| 1389 | DCHECK(!rs.rm().is(at)); |
| 1390 | DCHECK(!rs.rm().is(scratch)); |
| 1391 | DCHECK(!scratch.is(at)); |
| 1392 | if (IsMipsArchVariant(kMips32r6)) { |
| 1393 | sh(rd, rs); |
| 1394 | } else { |
| 1395 | DCHECK(IsMipsArchVariant(kMips32r2) || IsMipsArchVariant(kMips32r1) || |
| 1396 | IsMipsArchVariant(kLoongson)); |
| 1397 | MemOperand source = rs; |
| 1398 | // If offset > 16 bits, load address to at with offset 0. |
| 1399 | if (!is_int16(rs.offset()) || !is_int16(rs.offset() + 1)) { |
| 1400 | LoadRegPlusOffsetToAt(rs); |
| 1401 | source = MemOperand(at, 0); |
| 1402 | } |
| 1403 | |
| 1404 | if (!scratch.is(rd)) { |
| 1405 | mov(scratch, rd); |
| 1406 | } |
| 1407 | |
| 1408 | #if defined(V8_TARGET_LITTLE_ENDIAN) |
| 1409 | sb(scratch, source); |
| 1410 | srl(scratch, scratch, 8); |
| 1411 | sb(scratch, MemOperand(source.rm(), source.offset() + 1)); |
| 1412 | #elif defined(V8_TARGET_BIG_ENDIAN) |
| 1413 | sb(scratch, MemOperand(source.rm(), source.offset() + 1)); |
| 1414 | srl(scratch, scratch, 8); |
| 1415 | sb(scratch, source); |
| 1416 | #endif |
| 1417 | } |
| 1418 | } |
| 1419 | |
| 1420 | void MacroAssembler::Ulwc1(FPURegister fd, const MemOperand& rs, |
| 1421 | Register scratch) { |
| 1422 | if (IsMipsArchVariant(kMips32r6)) { |
| 1423 | lwc1(fd, rs); |
| 1424 | } else { |
| 1425 | DCHECK(IsMipsArchVariant(kMips32r2) || IsMipsArchVariant(kMips32r1) || |
| 1426 | IsMipsArchVariant(kLoongson)); |
| 1427 | Ulw(scratch, rs); |
| 1428 | mtc1(scratch, fd); |
| 1429 | } |
| 1430 | } |
| 1431 | |
| 1432 | void MacroAssembler::Uswc1(FPURegister fd, const MemOperand& rs, |
| 1433 | Register scratch) { |
| 1434 | if (IsMipsArchVariant(kMips32r6)) { |
| 1435 | swc1(fd, rs); |
| 1436 | } else { |
| 1437 | DCHECK(IsMipsArchVariant(kMips32r2) || IsMipsArchVariant(kMips32r1) || |
| 1438 | IsMipsArchVariant(kLoongson)); |
| 1439 | mfc1(scratch, fd); |
| 1440 | Usw(scratch, rs); |
| 1441 | } |
| 1442 | } |
| 1443 | |
| 1444 | void MacroAssembler::Uldc1(FPURegister fd, const MemOperand& rs, |
| 1445 | Register scratch) { |
| 1446 | DCHECK(!scratch.is(at)); |
| 1447 | if (IsMipsArchVariant(kMips32r6)) { |
| 1448 | ldc1(fd, rs); |
| 1449 | } else { |
| 1450 | DCHECK(IsMipsArchVariant(kMips32r2) || IsMipsArchVariant(kMips32r1) || |
| 1451 | IsMipsArchVariant(kLoongson)); |
| 1452 | Ulw(scratch, MemOperand(rs.rm(), rs.offset() + Register::kMantissaOffset)); |
| 1453 | mtc1(scratch, fd); |
| 1454 | Ulw(scratch, MemOperand(rs.rm(), rs.offset() + Register::kExponentOffset)); |
| 1455 | Mthc1(scratch, fd); |
| 1456 | } |
| 1457 | } |
| 1458 | |
| 1459 | void MacroAssembler::Usdc1(FPURegister fd, const MemOperand& rs, |
| 1460 | Register scratch) { |
| 1461 | DCHECK(!scratch.is(at)); |
| 1462 | if (IsMipsArchVariant(kMips32r6)) { |
| 1463 | sdc1(fd, rs); |
| 1464 | } else { |
| 1465 | DCHECK(IsMipsArchVariant(kMips32r2) || IsMipsArchVariant(kMips32r1) || |
| 1466 | IsMipsArchVariant(kLoongson)); |
| 1467 | mfc1(scratch, fd); |
| 1468 | Usw(scratch, MemOperand(rs.rm(), rs.offset() + Register::kMantissaOffset)); |
| 1469 | Mfhc1(scratch, fd); |
| 1470 | Usw(scratch, MemOperand(rs.rm(), rs.offset() + Register::kExponentOffset)); |
| 1471 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1472 | } |
| 1473 | |
| 1474 | |
| 1475 | void MacroAssembler::li(Register dst, Handle<Object> value, LiFlags mode) { |
| 1476 | AllowDeferredHandleDereference smi_check; |
| 1477 | if (value->IsSmi()) { |
| 1478 | li(dst, Operand(value), mode); |
| 1479 | } else { |
| 1480 | DCHECK(value->IsHeapObject()); |
| 1481 | if (isolate()->heap()->InNewSpace(*value)) { |
| 1482 | Handle<Cell> cell = isolate()->factory()->NewCell(value); |
| 1483 | li(dst, Operand(cell)); |
| 1484 | lw(dst, FieldMemOperand(dst, Cell::kValueOffset)); |
| 1485 | } else { |
| 1486 | li(dst, Operand(value)); |
| 1487 | } |
| 1488 | } |
| 1489 | } |
| 1490 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1491 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1492 | void MacroAssembler::li(Register rd, Operand j, LiFlags mode) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1493 | DCHECK(!j.is_reg()); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1494 | BlockTrampolinePoolScope block_trampoline_pool(this); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1495 | if (!MustUseReg(j.rmode_) && mode == OPTIMIZE_SIZE) { |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1496 | // Normal load of an immediate value which does not need Relocation Info. |
| 1497 | if (is_int16(j.imm32_)) { |
| 1498 | addiu(rd, zero_reg, j.imm32_); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1499 | } else if (!(j.imm32_ & kHiMask)) { |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1500 | ori(rd, zero_reg, j.imm32_); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1501 | } else if (!(j.imm32_ & kImm16Mask)) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1502 | lui(rd, (j.imm32_ >> kLuiShift) & kImm16Mask); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1503 | } else { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1504 | lui(rd, (j.imm32_ >> kLuiShift) & kImm16Mask); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1505 | ori(rd, rd, (j.imm32_ & kImm16Mask)); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1506 | } |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1507 | } else { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1508 | if (MustUseReg(j.rmode_)) { |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1509 | RecordRelocInfo(j.rmode_, j.imm32_); |
| 1510 | } |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1511 | // We always need the same number of instructions as we may need to patch |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1512 | // this code to load another value which may need 2 instructions to load. |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1513 | lui(rd, (j.imm32_ >> kLuiShift) & kImm16Mask); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1514 | ori(rd, rd, (j.imm32_ & kImm16Mask)); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1515 | } |
| 1516 | } |
| 1517 | |
| 1518 | |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1519 | void MacroAssembler::MultiPush(RegList regs) { |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 1520 | int16_t num_to_push = NumberOfBitsSet(regs); |
| 1521 | int16_t stack_offset = num_to_push * kPointerSize; |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1522 | |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 1523 | Subu(sp, sp, Operand(stack_offset)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1524 | for (int16_t i = kNumRegisters - 1; i >= 0; i--) { |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1525 | if ((regs & (1 << i)) != 0) { |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 1526 | stack_offset -= kPointerSize; |
| 1527 | sw(ToRegister(i), MemOperand(sp, stack_offset)); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1528 | } |
| 1529 | } |
| 1530 | } |
| 1531 | |
| 1532 | |
| 1533 | void MacroAssembler::MultiPushReversed(RegList regs) { |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 1534 | int16_t num_to_push = NumberOfBitsSet(regs); |
| 1535 | int16_t stack_offset = num_to_push * kPointerSize; |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1536 | |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 1537 | Subu(sp, sp, Operand(stack_offset)); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 1538 | for (int16_t i = 0; i < kNumRegisters; i++) { |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1539 | if ((regs & (1 << i)) != 0) { |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 1540 | stack_offset -= kPointerSize; |
| 1541 | sw(ToRegister(i), MemOperand(sp, stack_offset)); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1542 | } |
| 1543 | } |
| 1544 | } |
| 1545 | |
| 1546 | |
| 1547 | void MacroAssembler::MultiPop(RegList regs) { |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 1548 | int16_t stack_offset = 0; |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1549 | |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 1550 | for (int16_t i = 0; i < kNumRegisters; i++) { |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1551 | if ((regs & (1 << i)) != 0) { |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 1552 | lw(ToRegister(i), MemOperand(sp, stack_offset)); |
| 1553 | stack_offset += kPointerSize; |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1554 | } |
| 1555 | } |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 1556 | addiu(sp, sp, stack_offset); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1557 | } |
| 1558 | |
| 1559 | |
| 1560 | void MacroAssembler::MultiPopReversed(RegList regs) { |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 1561 | int16_t stack_offset = 0; |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1562 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1563 | for (int16_t i = kNumRegisters - 1; i >= 0; i--) { |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1564 | if ((regs & (1 << i)) != 0) { |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 1565 | lw(ToRegister(i), MemOperand(sp, stack_offset)); |
| 1566 | stack_offset += kPointerSize; |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1567 | } |
| 1568 | } |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 1569 | addiu(sp, sp, stack_offset); |
| 1570 | } |
| 1571 | |
| 1572 | |
| 1573 | void MacroAssembler::MultiPushFPU(RegList regs) { |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 1574 | int16_t num_to_push = NumberOfBitsSet(regs); |
| 1575 | int16_t stack_offset = num_to_push * kDoubleSize; |
| 1576 | |
| 1577 | Subu(sp, sp, Operand(stack_offset)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1578 | for (int16_t i = kNumRegisters - 1; i >= 0; i--) { |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 1579 | if ((regs & (1 << i)) != 0) { |
| 1580 | stack_offset -= kDoubleSize; |
| 1581 | sdc1(FPURegister::from_code(i), MemOperand(sp, stack_offset)); |
| 1582 | } |
| 1583 | } |
| 1584 | } |
| 1585 | |
| 1586 | |
| 1587 | void MacroAssembler::MultiPushReversedFPU(RegList regs) { |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 1588 | int16_t num_to_push = NumberOfBitsSet(regs); |
| 1589 | int16_t stack_offset = num_to_push * kDoubleSize; |
| 1590 | |
| 1591 | Subu(sp, sp, Operand(stack_offset)); |
| 1592 | for (int16_t i = 0; i < kNumRegisters; i++) { |
| 1593 | if ((regs & (1 << i)) != 0) { |
| 1594 | stack_offset -= kDoubleSize; |
| 1595 | sdc1(FPURegister::from_code(i), MemOperand(sp, stack_offset)); |
| 1596 | } |
| 1597 | } |
| 1598 | } |
| 1599 | |
| 1600 | |
| 1601 | void MacroAssembler::MultiPopFPU(RegList regs) { |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 1602 | int16_t stack_offset = 0; |
| 1603 | |
| 1604 | for (int16_t i = 0; i < kNumRegisters; i++) { |
| 1605 | if ((regs & (1 << i)) != 0) { |
| 1606 | ldc1(FPURegister::from_code(i), MemOperand(sp, stack_offset)); |
| 1607 | stack_offset += kDoubleSize; |
| 1608 | } |
| 1609 | } |
| 1610 | addiu(sp, sp, stack_offset); |
| 1611 | } |
| 1612 | |
| 1613 | |
| 1614 | void MacroAssembler::MultiPopReversedFPU(RegList regs) { |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 1615 | int16_t stack_offset = 0; |
| 1616 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1617 | for (int16_t i = kNumRegisters - 1; i >= 0; i--) { |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 1618 | if ((regs & (1 << i)) != 0) { |
| 1619 | ldc1(FPURegister::from_code(i), MemOperand(sp, stack_offset)); |
| 1620 | stack_offset += kDoubleSize; |
| 1621 | } |
| 1622 | } |
| 1623 | addiu(sp, sp, stack_offset); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1624 | } |
| 1625 | |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 1626 | void MacroAssembler::AddPair(Register dst_low, Register dst_high, |
| 1627 | Register left_low, Register left_high, |
| 1628 | Register right_low, Register right_high) { |
| 1629 | Label no_overflow; |
| 1630 | Register kScratchReg = s3; |
| 1631 | Register kScratchReg2 = s4; |
| 1632 | // Add lower word |
| 1633 | Addu(dst_low, left_low, right_low); |
| 1634 | Addu(dst_high, left_high, right_high); |
| 1635 | // Check for lower word unsigned overflow |
| 1636 | Sltu(kScratchReg, dst_low, left_low); |
| 1637 | Sltu(kScratchReg2, dst_low, right_low); |
| 1638 | Or(kScratchReg, kScratchReg2, kScratchReg); |
| 1639 | Branch(&no_overflow, eq, kScratchReg, Operand(zero_reg)); |
| 1640 | // Increment higher word if there was overflow |
| 1641 | Addu(dst_high, dst_high, 0x1); |
| 1642 | bind(&no_overflow); |
| 1643 | } |
| 1644 | |
| 1645 | void MacroAssembler::SubPair(Register dst_low, Register dst_high, |
| 1646 | Register left_low, Register left_high, |
| 1647 | Register right_low, Register right_high) { |
| 1648 | Label no_overflow; |
| 1649 | Register kScratchReg = s3; |
| 1650 | // Subtract lower word |
| 1651 | Subu(dst_low, left_low, right_low); |
| 1652 | Subu(dst_high, left_high, right_high); |
| 1653 | // Check for lower word unsigned underflow |
| 1654 | Sltu(kScratchReg, left_low, right_low); |
| 1655 | Branch(&no_overflow, eq, kScratchReg, Operand(zero_reg)); |
| 1656 | // Decrement higher word if there was underflow |
| 1657 | Subu(dst_high, dst_high, 0x1); |
| 1658 | bind(&no_overflow); |
| 1659 | } |
| 1660 | |
| 1661 | void MacroAssembler::ShlPair(Register dst_low, Register dst_high, |
| 1662 | Register src_low, Register src_high, |
| 1663 | Register shift) { |
| 1664 | Label less_than_32; |
| 1665 | Label zero_shift; |
| 1666 | Label word_shift; |
| 1667 | Label done; |
| 1668 | Register kScratchReg = s3; |
| 1669 | And(shift, shift, 0x3F); |
| 1670 | li(kScratchReg, 0x20); |
| 1671 | Branch(&less_than_32, lt, shift, Operand(kScratchReg)); |
| 1672 | |
| 1673 | Branch(&word_shift, eq, shift, Operand(kScratchReg)); |
| 1674 | // Shift more than 32 |
| 1675 | Subu(kScratchReg, shift, kScratchReg); |
| 1676 | mov(dst_low, zero_reg); |
| 1677 | sllv(dst_high, src_low, kScratchReg); |
| 1678 | Branch(&done); |
| 1679 | // Word shift |
| 1680 | bind(&word_shift); |
| 1681 | mov(dst_low, zero_reg); |
| 1682 | mov(dst_high, src_low); |
| 1683 | Branch(&done); |
| 1684 | |
| 1685 | bind(&less_than_32); |
| 1686 | // Check if zero shift |
| 1687 | Branch(&zero_shift, eq, shift, Operand(zero_reg)); |
| 1688 | // Shift less than 32 |
| 1689 | Subu(kScratchReg, kScratchReg, shift); |
| 1690 | sllv(dst_high, src_high, shift); |
| 1691 | sllv(dst_low, src_low, shift); |
| 1692 | srlv(kScratchReg, src_low, kScratchReg); |
| 1693 | Or(dst_high, dst_high, kScratchReg); |
| 1694 | Branch(&done); |
| 1695 | // Zero shift |
| 1696 | bind(&zero_shift); |
| 1697 | mov(dst_low, src_low); |
| 1698 | mov(dst_high, src_high); |
| 1699 | bind(&done); |
| 1700 | } |
| 1701 | |
| 1702 | void MacroAssembler::ShlPair(Register dst_low, Register dst_high, |
| 1703 | Register src_low, Register src_high, |
| 1704 | uint32_t shift) { |
| 1705 | Register kScratchReg = s3; |
| 1706 | shift = shift & 0x3F; |
| 1707 | if (shift < 32) { |
| 1708 | if (shift == 0) { |
| 1709 | mov(dst_low, src_low); |
| 1710 | mov(dst_high, src_high); |
| 1711 | } else { |
| 1712 | sll(dst_high, src_high, shift); |
| 1713 | sll(dst_low, src_low, shift); |
| 1714 | shift = 32 - shift; |
| 1715 | srl(kScratchReg, src_low, shift); |
| 1716 | Or(dst_high, dst_high, kScratchReg); |
| 1717 | } |
| 1718 | } else { |
| 1719 | if (shift == 32) { |
| 1720 | mov(dst_low, zero_reg); |
| 1721 | mov(dst_high, src_low); |
| 1722 | } else { |
| 1723 | shift = shift - 32; |
| 1724 | mov(dst_low, zero_reg); |
| 1725 | sll(dst_high, src_low, shift); |
| 1726 | } |
| 1727 | } |
| 1728 | } |
| 1729 | |
| 1730 | void MacroAssembler::ShrPair(Register dst_low, Register dst_high, |
| 1731 | Register src_low, Register src_high, |
| 1732 | Register shift) { |
| 1733 | Label less_than_32; |
| 1734 | Label zero_shift; |
| 1735 | Label word_shift; |
| 1736 | Label done; |
| 1737 | Register kScratchReg = s3; |
| 1738 | And(shift, shift, 0x3F); |
| 1739 | li(kScratchReg, 0x20); |
| 1740 | Branch(&less_than_32, lt, shift, Operand(kScratchReg)); |
| 1741 | |
| 1742 | Branch(&word_shift, eq, shift, Operand(kScratchReg)); |
| 1743 | // Shift more than 32 |
| 1744 | Subu(kScratchReg, shift, kScratchReg); |
| 1745 | mov(dst_high, zero_reg); |
| 1746 | srlv(dst_low, src_high, kScratchReg); |
| 1747 | Branch(&done); |
| 1748 | // Word shift |
| 1749 | bind(&word_shift); |
| 1750 | mov(dst_high, zero_reg); |
| 1751 | mov(dst_low, src_high); |
| 1752 | Branch(&done); |
| 1753 | |
| 1754 | bind(&less_than_32); |
| 1755 | // Check if zero shift |
| 1756 | Branch(&zero_shift, eq, shift, Operand(zero_reg)); |
| 1757 | // Shift less than 32 |
| 1758 | Subu(kScratchReg, kScratchReg, shift); |
| 1759 | srlv(dst_high, src_high, shift); |
| 1760 | srlv(dst_low, src_low, shift); |
| 1761 | sllv(kScratchReg, src_high, kScratchReg); |
| 1762 | Or(dst_low, dst_low, kScratchReg); |
| 1763 | Branch(&done); |
| 1764 | // Zero shift |
| 1765 | bind(&zero_shift); |
| 1766 | mov(dst_low, src_low); |
| 1767 | mov(dst_high, src_high); |
| 1768 | bind(&done); |
| 1769 | } |
| 1770 | |
| 1771 | void MacroAssembler::ShrPair(Register dst_low, Register dst_high, |
| 1772 | Register src_low, Register src_high, |
| 1773 | uint32_t shift) { |
| 1774 | Register kScratchReg = s3; |
| 1775 | shift = shift & 0x3F; |
| 1776 | if (shift < 32) { |
| 1777 | if (shift == 0) { |
| 1778 | mov(dst_low, src_low); |
| 1779 | mov(dst_high, src_high); |
| 1780 | } else { |
| 1781 | srl(dst_high, src_high, shift); |
| 1782 | srl(dst_low, src_low, shift); |
| 1783 | shift = 32 - shift; |
| 1784 | sll(kScratchReg, src_high, shift); |
| 1785 | Or(dst_low, dst_low, kScratchReg); |
| 1786 | } |
| 1787 | } else { |
| 1788 | if (shift == 32) { |
| 1789 | mov(dst_high, zero_reg); |
| 1790 | mov(dst_low, src_high); |
| 1791 | } else { |
| 1792 | shift = shift - 32; |
| 1793 | mov(dst_high, zero_reg); |
| 1794 | srl(dst_low, src_high, shift); |
| 1795 | } |
| 1796 | } |
| 1797 | } |
| 1798 | |
| 1799 | void MacroAssembler::SarPair(Register dst_low, Register dst_high, |
| 1800 | Register src_low, Register src_high, |
| 1801 | Register shift) { |
| 1802 | Label less_than_32; |
| 1803 | Label zero_shift; |
| 1804 | Label word_shift; |
| 1805 | Label done; |
| 1806 | Register kScratchReg = s3; |
| 1807 | Register kScratchReg2 = s4; |
| 1808 | And(shift, shift, 0x3F); |
| 1809 | li(kScratchReg, 0x20); |
| 1810 | Branch(&less_than_32, lt, shift, Operand(kScratchReg)); |
| 1811 | |
| 1812 | Branch(&word_shift, eq, shift, Operand(kScratchReg)); |
| 1813 | |
| 1814 | // Shift more than 32 |
| 1815 | li(kScratchReg2, 0x1F); |
| 1816 | Subu(kScratchReg, shift, kScratchReg); |
| 1817 | srav(dst_high, src_high, kScratchReg2); |
| 1818 | srav(dst_low, src_high, kScratchReg); |
| 1819 | Branch(&done); |
| 1820 | // Word shift |
| 1821 | bind(&word_shift); |
| 1822 | li(kScratchReg2, 0x1F); |
| 1823 | srav(dst_high, src_high, kScratchReg2); |
| 1824 | mov(dst_low, src_high); |
| 1825 | Branch(&done); |
| 1826 | |
| 1827 | bind(&less_than_32); |
| 1828 | // Check if zero shift |
| 1829 | Branch(&zero_shift, eq, shift, Operand(zero_reg)); |
| 1830 | |
| 1831 | // Shift less than 32 |
| 1832 | Subu(kScratchReg, kScratchReg, shift); |
| 1833 | srav(dst_high, src_high, shift); |
| 1834 | srlv(dst_low, src_low, shift); |
| 1835 | sllv(kScratchReg, src_high, kScratchReg); |
| 1836 | Or(dst_low, dst_low, kScratchReg); |
| 1837 | Branch(&done); |
| 1838 | // Zero shift |
| 1839 | bind(&zero_shift); |
| 1840 | mov(dst_low, src_low); |
| 1841 | mov(dst_high, src_high); |
| 1842 | bind(&done); |
| 1843 | } |
| 1844 | |
| 1845 | void MacroAssembler::SarPair(Register dst_low, Register dst_high, |
| 1846 | Register src_low, Register src_high, |
| 1847 | uint32_t shift) { |
| 1848 | Register kScratchReg = s3; |
| 1849 | shift = shift & 0x3F; |
| 1850 | if (shift < 32) { |
| 1851 | if (shift == 0) { |
| 1852 | mov(dst_low, src_low); |
| 1853 | mov(dst_high, src_high); |
| 1854 | } else { |
| 1855 | sra(dst_high, src_high, shift); |
| 1856 | srl(dst_low, src_low, shift); |
| 1857 | shift = 32 - shift; |
| 1858 | sll(kScratchReg, src_high, shift); |
| 1859 | Or(dst_low, dst_low, kScratchReg); |
| 1860 | } |
| 1861 | } else { |
| 1862 | if (shift == 32) { |
| 1863 | sra(dst_high, src_high, 31); |
| 1864 | mov(dst_low, src_high); |
| 1865 | } else { |
| 1866 | shift = shift - 32; |
| 1867 | sra(dst_high, src_high, 31); |
| 1868 | sra(dst_low, src_high, shift); |
| 1869 | } |
| 1870 | } |
| 1871 | } |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1872 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1873 | void MacroAssembler::Ext(Register rt, |
| 1874 | Register rs, |
| 1875 | uint16_t pos, |
| 1876 | uint16_t size) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1877 | DCHECK(pos < 32); |
| 1878 | DCHECK(pos + size < 33); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1879 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1880 | if (IsMipsArchVariant(kMips32r2) || IsMipsArchVariant(kMips32r6)) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1881 | ext_(rt, rs, pos, size); |
| 1882 | } else { |
| 1883 | // Move rs to rt and shift it left then right to get the |
| 1884 | // desired bitfield on the right side and zeroes on the left. |
Ben Murdoch | 69a99ed | 2011-11-30 16:03:39 +0000 | [diff] [blame] | 1885 | int shift_left = 32 - (pos + size); |
| 1886 | sll(rt, rs, shift_left); // Acts as a move if shift_left == 0. |
| 1887 | |
| 1888 | int shift_right = 32 - size; |
| 1889 | if (shift_right > 0) { |
| 1890 | srl(rt, rt, shift_right); |
| 1891 | } |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1892 | } |
| 1893 | } |
| 1894 | |
| 1895 | |
| 1896 | void MacroAssembler::Ins(Register rt, |
| 1897 | Register rs, |
| 1898 | uint16_t pos, |
| 1899 | uint16_t size) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1900 | DCHECK(pos < 32); |
| 1901 | DCHECK(pos + size <= 32); |
| 1902 | DCHECK(size != 0); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1903 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1904 | if (IsMipsArchVariant(kMips32r2) || IsMipsArchVariant(kMips32r6)) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1905 | ins_(rt, rs, pos, size); |
| 1906 | } else { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1907 | DCHECK(!rt.is(t8) && !rs.is(t8)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1908 | Subu(at, zero_reg, Operand(1)); |
| 1909 | srl(at, at, 32 - size); |
| 1910 | and_(t8, rs, at); |
| 1911 | sll(t8, t8, pos); |
| 1912 | sll(at, at, pos); |
| 1913 | nor(at, at, zero_reg); |
| 1914 | and_(at, rt, at); |
| 1915 | or_(rt, t8, at); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1916 | } |
| 1917 | } |
| 1918 | |
| 1919 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1920 | void MacroAssembler::Cvt_d_uw(FPURegister fd, Register rs, |
Ben Murdoch | 69a99ed | 2011-11-30 16:03:39 +0000 | [diff] [blame] | 1921 | FPURegister scratch) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1922 | // In FP64Mode we do convertion from long. |
| 1923 | if (IsFp64Mode()) { |
| 1924 | mtc1(rs, scratch); |
| 1925 | Mthc1(zero_reg, scratch); |
| 1926 | cvt_d_l(fd, scratch); |
| 1927 | } else { |
| 1928 | // Convert rs to a FP value in fd. |
| 1929 | DCHECK(!fd.is(scratch)); |
| 1930 | DCHECK(!rs.is(at)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1931 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1932 | Label msb_clear, conversion_done; |
| 1933 | // For a value which is < 2^31, regard it as a signed positve word. |
| 1934 | Branch(&msb_clear, ge, rs, Operand(zero_reg), USE_DELAY_SLOT); |
| 1935 | mtc1(rs, fd); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1936 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1937 | li(at, 0x41F00000); // FP value: 2^32. |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1938 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1939 | // For unsigned inputs > 2^31, we convert to double as a signed int32, |
| 1940 | // then add 2^32 to move it back to unsigned value in range 2^31..2^31-1. |
| 1941 | mtc1(zero_reg, scratch); |
| 1942 | Mthc1(at, scratch); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1943 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1944 | cvt_d_w(fd, fd); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1945 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1946 | Branch(USE_DELAY_SLOT, &conversion_done); |
| 1947 | add_d(fd, fd, scratch); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1948 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1949 | bind(&msb_clear); |
| 1950 | cvt_d_w(fd, fd); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1951 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1952 | bind(&conversion_done); |
| 1953 | } |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1954 | } |
| 1955 | |
| 1956 | |
Ben Murdoch | 69a99ed | 2011-11-30 16:03:39 +0000 | [diff] [blame] | 1957 | void MacroAssembler::Trunc_uw_d(FPURegister fd, |
| 1958 | FPURegister fs, |
| 1959 | FPURegister scratch) { |
| 1960 | Trunc_uw_d(fs, t8, scratch); |
| 1961 | mtc1(t8, fd); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1962 | } |
| 1963 | |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 1964 | void MacroAssembler::Trunc_uw_s(FPURegister fd, FPURegister fs, |
| 1965 | FPURegister scratch) { |
| 1966 | Trunc_uw_s(fs, t8, scratch); |
| 1967 | mtc1(t8, fd); |
| 1968 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1969 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1970 | void MacroAssembler::Trunc_w_d(FPURegister fd, FPURegister fs) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1971 | if (IsMipsArchVariant(kLoongson) && fd.is(fs)) { |
| 1972 | Mfhc1(t8, fs); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1973 | trunc_w_d(fd, fs); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1974 | Mthc1(t8, fs); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1975 | } else { |
| 1976 | trunc_w_d(fd, fs); |
| 1977 | } |
| 1978 | } |
| 1979 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1980 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1981 | void MacroAssembler::Round_w_d(FPURegister fd, FPURegister fs) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1982 | if (IsMipsArchVariant(kLoongson) && fd.is(fs)) { |
| 1983 | Mfhc1(t8, fs); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1984 | round_w_d(fd, fs); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1985 | Mthc1(t8, fs); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1986 | } else { |
| 1987 | round_w_d(fd, fs); |
| 1988 | } |
| 1989 | } |
| 1990 | |
| 1991 | |
| 1992 | void MacroAssembler::Floor_w_d(FPURegister fd, FPURegister fs) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1993 | if (IsMipsArchVariant(kLoongson) && fd.is(fs)) { |
| 1994 | Mfhc1(t8, fs); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1995 | floor_w_d(fd, fs); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1996 | Mthc1(t8, fs); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1997 | } else { |
| 1998 | floor_w_d(fd, fs); |
| 1999 | } |
| 2000 | } |
| 2001 | |
| 2002 | |
| 2003 | void MacroAssembler::Ceil_w_d(FPURegister fd, FPURegister fs) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2004 | if (IsMipsArchVariant(kLoongson) && fd.is(fs)) { |
| 2005 | Mfhc1(t8, fs); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2006 | ceil_w_d(fd, fs); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2007 | Mthc1(t8, fs); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2008 | } else { |
| 2009 | ceil_w_d(fd, fs); |
| 2010 | } |
| 2011 | } |
| 2012 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2013 | |
Ben Murdoch | 69a99ed | 2011-11-30 16:03:39 +0000 | [diff] [blame] | 2014 | void MacroAssembler::Trunc_uw_d(FPURegister fd, |
| 2015 | Register rs, |
| 2016 | FPURegister scratch) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2017 | DCHECK(!fd.is(scratch)); |
| 2018 | DCHECK(!rs.is(at)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2019 | |
Ben Murdoch | 69a99ed | 2011-11-30 16:03:39 +0000 | [diff] [blame] | 2020 | // Load 2^31 into scratch as its float representation. |
| 2021 | li(at, 0x41E00000); |
Ben Murdoch | 69a99ed | 2011-11-30 16:03:39 +0000 | [diff] [blame] | 2022 | mtc1(zero_reg, scratch); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2023 | Mthc1(at, scratch); |
Ben Murdoch | 69a99ed | 2011-11-30 16:03:39 +0000 | [diff] [blame] | 2024 | // Test if scratch > fd. |
Ben Murdoch | 85b7179 | 2012-04-11 18:30:58 +0100 | [diff] [blame] | 2025 | // If fd < 2^31 we can convert it normally. |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2026 | Label simple_convert; |
| 2027 | BranchF(&simple_convert, NULL, lt, fd, scratch); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2028 | |
| 2029 | // First we subtract 2^31 from fd, then trunc it to rs |
| 2030 | // and add 2^31 to rs. |
Ben Murdoch | 69a99ed | 2011-11-30 16:03:39 +0000 | [diff] [blame] | 2031 | sub_d(scratch, fd, scratch); |
| 2032 | trunc_w_d(scratch, scratch); |
| 2033 | mfc1(rs, scratch); |
| 2034 | Or(rs, rs, 1 << 31); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2035 | |
| 2036 | Label done; |
| 2037 | Branch(&done); |
| 2038 | // Simple conversion. |
| 2039 | bind(&simple_convert); |
Ben Murdoch | 69a99ed | 2011-11-30 16:03:39 +0000 | [diff] [blame] | 2040 | trunc_w_d(scratch, fd); |
| 2041 | mfc1(rs, scratch); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2042 | |
| 2043 | bind(&done); |
| 2044 | } |
| 2045 | |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 2046 | void MacroAssembler::Trunc_uw_s(FPURegister fd, Register rs, |
| 2047 | FPURegister scratch) { |
| 2048 | DCHECK(!fd.is(scratch)); |
| 2049 | DCHECK(!rs.is(at)); |
| 2050 | |
| 2051 | // Load 2^31 into scratch as its float representation. |
| 2052 | li(at, 0x4F000000); |
| 2053 | mtc1(at, scratch); |
| 2054 | // Test if scratch > fd. |
| 2055 | // If fd < 2^31 we can convert it normally. |
| 2056 | Label simple_convert; |
| 2057 | BranchF32(&simple_convert, NULL, lt, fd, scratch); |
| 2058 | |
| 2059 | // First we subtract 2^31 from fd, then trunc it to rs |
| 2060 | // and add 2^31 to rs. |
| 2061 | sub_s(scratch, fd, scratch); |
| 2062 | trunc_w_s(scratch, scratch); |
| 2063 | mfc1(rs, scratch); |
| 2064 | Or(rs, rs, 1 << 31); |
| 2065 | |
| 2066 | Label done; |
| 2067 | Branch(&done); |
| 2068 | // Simple conversion. |
| 2069 | bind(&simple_convert); |
| 2070 | trunc_w_s(scratch, fd); |
| 2071 | mfc1(rs, scratch); |
| 2072 | |
| 2073 | bind(&done); |
| 2074 | } |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2075 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2076 | void MacroAssembler::Mthc1(Register rt, FPURegister fs) { |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 2077 | if (IsFp32Mode()) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2078 | mtc1(rt, fs.high()); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 2079 | } else { |
| 2080 | DCHECK(IsFp64Mode() || IsFpxxMode()); |
| 2081 | DCHECK(IsMipsArchVariant(kMips32r2) || IsMipsArchVariant(kMips32r6)); |
| 2082 | mthc1(rt, fs); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2083 | } |
| 2084 | } |
| 2085 | |
| 2086 | |
| 2087 | void MacroAssembler::Mfhc1(Register rt, FPURegister fs) { |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 2088 | if (IsFp32Mode()) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2089 | mfc1(rt, fs.high()); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 2090 | } else { |
| 2091 | DCHECK(IsFp64Mode() || IsFpxxMode()); |
| 2092 | DCHECK(IsMipsArchVariant(kMips32r2) || IsMipsArchVariant(kMips32r6)); |
| 2093 | mfhc1(rt, fs); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2094 | } |
| 2095 | } |
| 2096 | |
| 2097 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2098 | void MacroAssembler::BranchFCommon(SecondaryField sizeField, Label* target, |
| 2099 | Label* nan, Condition cond, FPURegister cmp1, |
| 2100 | FPURegister cmp2, BranchDelaySlot bd) { |
| 2101 | { |
| 2102 | BlockTrampolinePoolScope block_trampoline_pool(this); |
| 2103 | if (cond == al) { |
| 2104 | Branch(bd, target); |
| 2105 | return; |
| 2106 | } |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2107 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2108 | if (IsMipsArchVariant(kMips32r6)) { |
| 2109 | sizeField = sizeField == D ? L : W; |
| 2110 | } |
| 2111 | DCHECK(nan || target); |
| 2112 | // Check for unordered (NaN) cases. |
| 2113 | if (nan) { |
| 2114 | bool long_branch = |
| 2115 | nan->is_bound() ? is_near(nan) : is_trampoline_emitted(); |
| 2116 | if (!IsMipsArchVariant(kMips32r6)) { |
| 2117 | if (long_branch) { |
| 2118 | Label skip; |
| 2119 | c(UN, sizeField, cmp1, cmp2); |
| 2120 | bc1f(&skip); |
| 2121 | nop(); |
| 2122 | BranchLong(nan, bd); |
| 2123 | bind(&skip); |
| 2124 | } else { |
| 2125 | c(UN, sizeField, cmp1, cmp2); |
| 2126 | bc1t(nan); |
| 2127 | if (bd == PROTECT) { |
| 2128 | nop(); |
| 2129 | } |
| 2130 | } |
| 2131 | } else { |
| 2132 | // Use kDoubleCompareReg for comparison result. It has to be unavailable |
| 2133 | // to lithium register allocator. |
| 2134 | DCHECK(!cmp1.is(kDoubleCompareReg) && !cmp2.is(kDoubleCompareReg)); |
| 2135 | if (long_branch) { |
| 2136 | Label skip; |
| 2137 | cmp(UN, sizeField, kDoubleCompareReg, cmp1, cmp2); |
| 2138 | bc1eqz(&skip, kDoubleCompareReg); |
| 2139 | nop(); |
| 2140 | BranchLong(nan, bd); |
| 2141 | bind(&skip); |
| 2142 | } else { |
| 2143 | cmp(UN, sizeField, kDoubleCompareReg, cmp1, cmp2); |
| 2144 | bc1nez(nan, kDoubleCompareReg); |
| 2145 | if (bd == PROTECT) { |
| 2146 | nop(); |
| 2147 | } |
| 2148 | } |
| 2149 | } |
| 2150 | } |
| 2151 | |
| 2152 | if (target) { |
| 2153 | bool long_branch = |
| 2154 | target->is_bound() ? is_near(target) : is_trampoline_emitted(); |
| 2155 | if (long_branch) { |
| 2156 | Label skip; |
| 2157 | Condition neg_cond = NegateFpuCondition(cond); |
| 2158 | BranchShortF(sizeField, &skip, neg_cond, cmp1, cmp2, bd); |
| 2159 | BranchLong(target, bd); |
| 2160 | bind(&skip); |
| 2161 | } else { |
| 2162 | BranchShortF(sizeField, target, cond, cmp1, cmp2, bd); |
| 2163 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2164 | } |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2165 | } |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2166 | } |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2167 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2168 | void MacroAssembler::BranchShortF(SecondaryField sizeField, Label* target, |
| 2169 | Condition cc, FPURegister cmp1, |
| 2170 | FPURegister cmp2, BranchDelaySlot bd) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2171 | if (!IsMipsArchVariant(kMips32r6)) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2172 | BlockTrampolinePoolScope block_trampoline_pool(this); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2173 | if (target) { |
| 2174 | // Here NaN cases were either handled by this function or are assumed to |
| 2175 | // have been handled by the caller. |
| 2176 | switch (cc) { |
| 2177 | case lt: |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2178 | c(OLT, sizeField, cmp1, cmp2); |
| 2179 | bc1t(target); |
| 2180 | break; |
| 2181 | case ult: |
| 2182 | c(ULT, sizeField, cmp1, cmp2); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2183 | bc1t(target); |
| 2184 | break; |
| 2185 | case gt: |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2186 | c(ULE, sizeField, cmp1, cmp2); |
| 2187 | bc1f(target); |
| 2188 | break; |
| 2189 | case ugt: |
| 2190 | c(OLE, sizeField, cmp1, cmp2); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2191 | bc1f(target); |
| 2192 | break; |
| 2193 | case ge: |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2194 | c(ULT, sizeField, cmp1, cmp2); |
| 2195 | bc1f(target); |
| 2196 | break; |
| 2197 | case uge: |
| 2198 | c(OLT, sizeField, cmp1, cmp2); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2199 | bc1f(target); |
| 2200 | break; |
| 2201 | case le: |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2202 | c(OLE, sizeField, cmp1, cmp2); |
| 2203 | bc1t(target); |
| 2204 | break; |
| 2205 | case ule: |
| 2206 | c(ULE, sizeField, cmp1, cmp2); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2207 | bc1t(target); |
| 2208 | break; |
| 2209 | case eq: |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2210 | c(EQ, sizeField, cmp1, cmp2); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2211 | bc1t(target); |
| 2212 | break; |
| 2213 | case ueq: |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2214 | c(UEQ, sizeField, cmp1, cmp2); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2215 | bc1t(target); |
| 2216 | break; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2217 | case ne: // Unordered or not equal. |
| 2218 | c(EQ, sizeField, cmp1, cmp2); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2219 | bc1f(target); |
| 2220 | break; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2221 | case ogl: |
| 2222 | c(UEQ, sizeField, cmp1, cmp2); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2223 | bc1f(target); |
| 2224 | break; |
| 2225 | default: |
| 2226 | CHECK(0); |
| 2227 | } |
| 2228 | } |
| 2229 | } else { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2230 | BlockTrampolinePoolScope block_trampoline_pool(this); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2231 | if (target) { |
| 2232 | // Here NaN cases were either handled by this function or are assumed to |
| 2233 | // have been handled by the caller. |
| 2234 | // Unsigned conditions are treated as their signed counterpart. |
| 2235 | // Use kDoubleCompareReg for comparison result, it is |
| 2236 | // valid in fp64 (FR = 1) mode which is implied for mips32r6. |
| 2237 | DCHECK(!cmp1.is(kDoubleCompareReg) && !cmp2.is(kDoubleCompareReg)); |
| 2238 | switch (cc) { |
| 2239 | case lt: |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2240 | cmp(OLT, sizeField, kDoubleCompareReg, cmp1, cmp2); |
| 2241 | bc1nez(target, kDoubleCompareReg); |
| 2242 | break; |
| 2243 | case ult: |
| 2244 | cmp(ULT, sizeField, kDoubleCompareReg, cmp1, cmp2); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2245 | bc1nez(target, kDoubleCompareReg); |
| 2246 | break; |
| 2247 | case gt: |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2248 | cmp(ULE, sizeField, kDoubleCompareReg, cmp1, cmp2); |
| 2249 | bc1eqz(target, kDoubleCompareReg); |
| 2250 | break; |
| 2251 | case ugt: |
| 2252 | cmp(OLE, sizeField, kDoubleCompareReg, cmp1, cmp2); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2253 | bc1eqz(target, kDoubleCompareReg); |
| 2254 | break; |
| 2255 | case ge: |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2256 | cmp(ULT, sizeField, kDoubleCompareReg, cmp1, cmp2); |
| 2257 | bc1eqz(target, kDoubleCompareReg); |
| 2258 | break; |
| 2259 | case uge: |
| 2260 | cmp(OLT, sizeField, kDoubleCompareReg, cmp1, cmp2); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2261 | bc1eqz(target, kDoubleCompareReg); |
| 2262 | break; |
| 2263 | case le: |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2264 | cmp(OLE, sizeField, kDoubleCompareReg, cmp1, cmp2); |
| 2265 | bc1nez(target, kDoubleCompareReg); |
| 2266 | break; |
| 2267 | case ule: |
| 2268 | cmp(ULE, sizeField, kDoubleCompareReg, cmp1, cmp2); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2269 | bc1nez(target, kDoubleCompareReg); |
| 2270 | break; |
| 2271 | case eq: |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2272 | cmp(EQ, sizeField, kDoubleCompareReg, cmp1, cmp2); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2273 | bc1nez(target, kDoubleCompareReg); |
| 2274 | break; |
| 2275 | case ueq: |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2276 | cmp(UEQ, sizeField, kDoubleCompareReg, cmp1, cmp2); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2277 | bc1nez(target, kDoubleCompareReg); |
| 2278 | break; |
| 2279 | case ne: |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2280 | cmp(EQ, sizeField, kDoubleCompareReg, cmp1, cmp2); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2281 | bc1eqz(target, kDoubleCompareReg); |
| 2282 | break; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2283 | case ogl: |
| 2284 | cmp(UEQ, sizeField, kDoubleCompareReg, cmp1, cmp2); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2285 | bc1eqz(target, kDoubleCompareReg); |
| 2286 | break; |
| 2287 | default: |
| 2288 | CHECK(0); |
| 2289 | } |
| 2290 | } |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2291 | } |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2292 | if (bd == PROTECT) { |
| 2293 | nop(); |
| 2294 | } |
| 2295 | } |
| 2296 | |
| 2297 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2298 | void MacroAssembler::FmoveLow(FPURegister dst, Register src_low) { |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 2299 | if (IsFp32Mode()) { |
| 2300 | mtc1(src_low, dst); |
| 2301 | } else { |
| 2302 | DCHECK(IsFp64Mode() || IsFpxxMode()); |
| 2303 | DCHECK(IsMipsArchVariant(kMips32r2) || IsMipsArchVariant(kMips32r6)); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2304 | DCHECK(!src_low.is(at)); |
| 2305 | mfhc1(at, dst); |
| 2306 | mtc1(src_low, dst); |
| 2307 | mthc1(at, dst); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2308 | } |
| 2309 | } |
| 2310 | |
| 2311 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 2312 | void MacroAssembler::Move(FPURegister dst, float imm) { |
| 2313 | li(at, Operand(bit_cast<int32_t>(imm))); |
| 2314 | mtc1(at, dst); |
| 2315 | } |
| 2316 | |
| 2317 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2318 | void MacroAssembler::Move(FPURegister dst, double imm) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2319 | static const DoubleRepresentation minus_zero(-0.0); |
| 2320 | static const DoubleRepresentation zero(0.0); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2321 | DoubleRepresentation value_rep(imm); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2322 | // Handle special values first. |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 2323 | if (value_rep == zero && has_double_zero_reg_set_) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2324 | mov_d(dst, kDoubleRegZero); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 2325 | } else if (value_rep == minus_zero && has_double_zero_reg_set_) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2326 | neg_d(dst, kDoubleRegZero); |
| 2327 | } else { |
| 2328 | uint32_t lo, hi; |
| 2329 | DoubleAsTwoUInt32(imm, &lo, &hi); |
| 2330 | // Move the low part of the double into the lower of the corresponding FPU |
| 2331 | // register of FPU register pair. |
| 2332 | if (lo != 0) { |
| 2333 | li(at, Operand(lo)); |
| 2334 | mtc1(at, dst); |
| 2335 | } else { |
| 2336 | mtc1(zero_reg, dst); |
| 2337 | } |
| 2338 | // Move the high part of the double into the higher of the corresponding FPU |
| 2339 | // register of FPU register pair. |
| 2340 | if (hi != 0) { |
| 2341 | li(at, Operand(hi)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2342 | Mthc1(at, dst); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2343 | } else { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2344 | Mthc1(zero_reg, dst); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2345 | } |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 2346 | if (dst.is(kDoubleRegZero)) has_double_zero_reg_set_ = true; |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2347 | } |
| 2348 | } |
| 2349 | |
| 2350 | |
| 2351 | void MacroAssembler::Movz(Register rd, Register rs, Register rt) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2352 | if (IsMipsArchVariant(kLoongson) || IsMipsArchVariant(kMips32r6)) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2353 | Label done; |
| 2354 | Branch(&done, ne, rt, Operand(zero_reg)); |
| 2355 | mov(rd, rs); |
| 2356 | bind(&done); |
| 2357 | } else { |
| 2358 | movz(rd, rs, rt); |
| 2359 | } |
| 2360 | } |
| 2361 | |
| 2362 | |
| 2363 | void MacroAssembler::Movn(Register rd, Register rs, Register rt) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2364 | if (IsMipsArchVariant(kLoongson) || IsMipsArchVariant(kMips32r6)) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2365 | Label done; |
| 2366 | Branch(&done, eq, rt, Operand(zero_reg)); |
| 2367 | mov(rd, rs); |
| 2368 | bind(&done); |
| 2369 | } else { |
| 2370 | movn(rd, rs, rt); |
| 2371 | } |
| 2372 | } |
| 2373 | |
| 2374 | |
| 2375 | void MacroAssembler::Movt(Register rd, Register rs, uint16_t cc) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2376 | if (IsMipsArchVariant(kLoongson)) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2377 | // Tests an FP condition code and then conditionally move rs to rd. |
| 2378 | // We do not currently use any FPU cc bit other than bit 0. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2379 | DCHECK(cc == 0); |
| 2380 | DCHECK(!(rs.is(t8) || rd.is(t8))); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2381 | Label done; |
| 2382 | Register scratch = t8; |
| 2383 | // For testing purposes we need to fetch content of the FCSR register and |
| 2384 | // than test its cc (floating point condition code) bit (for cc = 0, it is |
| 2385 | // 24. bit of the FCSR). |
| 2386 | cfc1(scratch, FCSR); |
| 2387 | // For the MIPS I, II and III architectures, the contents of scratch is |
| 2388 | // UNPREDICTABLE for the instruction immediately following CFC1. |
| 2389 | nop(); |
| 2390 | srl(scratch, scratch, 16); |
| 2391 | andi(scratch, scratch, 0x0080); |
| 2392 | Branch(&done, eq, scratch, Operand(zero_reg)); |
| 2393 | mov(rd, rs); |
| 2394 | bind(&done); |
| 2395 | } else { |
| 2396 | movt(rd, rs, cc); |
| 2397 | } |
| 2398 | } |
| 2399 | |
| 2400 | |
| 2401 | void MacroAssembler::Movf(Register rd, Register rs, uint16_t cc) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2402 | if (IsMipsArchVariant(kLoongson)) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2403 | // Tests an FP condition code and then conditionally move rs to rd. |
| 2404 | // We do not currently use any FPU cc bit other than bit 0. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2405 | DCHECK(cc == 0); |
| 2406 | DCHECK(!(rs.is(t8) || rd.is(t8))); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2407 | Label done; |
| 2408 | Register scratch = t8; |
| 2409 | // For testing purposes we need to fetch content of the FCSR register and |
| 2410 | // than test its cc (floating point condition code) bit (for cc = 0, it is |
| 2411 | // 24. bit of the FCSR). |
| 2412 | cfc1(scratch, FCSR); |
| 2413 | // For the MIPS I, II and III architectures, the contents of scratch is |
| 2414 | // UNPREDICTABLE for the instruction immediately following CFC1. |
| 2415 | nop(); |
| 2416 | srl(scratch, scratch, 16); |
| 2417 | andi(scratch, scratch, 0x0080); |
| 2418 | Branch(&done, ne, scratch, Operand(zero_reg)); |
| 2419 | mov(rd, rs); |
| 2420 | bind(&done); |
| 2421 | } else { |
| 2422 | movf(rd, rs, cc); |
| 2423 | } |
| 2424 | } |
| 2425 | |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 2426 | #define __ masm-> |
| 2427 | |
| 2428 | static bool ZeroHelper_d(MacroAssembler* masm, MaxMinKind kind, FPURegister dst, |
| 2429 | FPURegister src1, FPURegister src2, Label* equal) { |
| 2430 | if (src1.is(src2)) { |
| 2431 | __ Move(dst, src1); |
| 2432 | return true; |
| 2433 | } |
| 2434 | |
| 2435 | Label other, compare_not_equal; |
| 2436 | FPURegister left, right; |
| 2437 | if (kind == MaxMinKind::kMin) { |
| 2438 | left = src1; |
| 2439 | right = src2; |
| 2440 | } else { |
| 2441 | left = src2; |
| 2442 | right = src1; |
| 2443 | } |
| 2444 | |
| 2445 | __ BranchF64(&compare_not_equal, nullptr, ne, src1, src2); |
| 2446 | // Left and right hand side are equal, check for -0 vs. +0. |
| 2447 | __ FmoveHigh(t8, src1); |
| 2448 | __ Branch(&other, eq, t8, Operand(0x80000000)); |
| 2449 | __ Move_d(dst, right); |
| 2450 | __ Branch(equal); |
| 2451 | __ bind(&other); |
| 2452 | __ Move_d(dst, left); |
| 2453 | __ Branch(equal); |
| 2454 | __ bind(&compare_not_equal); |
| 2455 | return false; |
| 2456 | } |
| 2457 | |
| 2458 | static bool ZeroHelper_s(MacroAssembler* masm, MaxMinKind kind, FPURegister dst, |
| 2459 | FPURegister src1, FPURegister src2, Label* equal) { |
| 2460 | if (src1.is(src2)) { |
| 2461 | __ Move(dst, src1); |
| 2462 | return true; |
| 2463 | } |
| 2464 | |
| 2465 | Label other, compare_not_equal; |
| 2466 | FPURegister left, right; |
| 2467 | if (kind == MaxMinKind::kMin) { |
| 2468 | left = src1; |
| 2469 | right = src2; |
| 2470 | } else { |
| 2471 | left = src2; |
| 2472 | right = src1; |
| 2473 | } |
| 2474 | |
| 2475 | __ BranchF32(&compare_not_equal, nullptr, ne, src1, src2); |
| 2476 | // Left and right hand side are equal, check for -0 vs. +0. |
| 2477 | __ FmoveLow(t8, src1); |
| 2478 | __ Branch(&other, eq, t8, Operand(0x80000000)); |
| 2479 | __ Move_s(dst, right); |
| 2480 | __ Branch(equal); |
| 2481 | __ bind(&other); |
| 2482 | __ Move_s(dst, left); |
| 2483 | __ Branch(equal); |
| 2484 | __ bind(&compare_not_equal); |
| 2485 | return false; |
| 2486 | } |
| 2487 | |
| 2488 | #undef __ |
| 2489 | |
| 2490 | void MacroAssembler::MinNaNCheck_d(FPURegister dst, FPURegister src1, |
| 2491 | FPURegister src2, Label* nan) { |
| 2492 | if (nan) { |
| 2493 | BranchF64(nullptr, nan, eq, src1, src2); |
| 2494 | } |
| 2495 | if (IsMipsArchVariant(kMips32r6)) { |
| 2496 | min_d(dst, src1, src2); |
| 2497 | } else { |
| 2498 | Label skip; |
| 2499 | if (!ZeroHelper_d(this, MaxMinKind::kMin, dst, src1, src2, &skip)) { |
| 2500 | if (dst.is(src1)) { |
| 2501 | BranchF64(&skip, nullptr, le, src1, src2); |
| 2502 | Move_d(dst, src2); |
| 2503 | } else if (dst.is(src2)) { |
| 2504 | BranchF64(&skip, nullptr, ge, src1, src2); |
| 2505 | Move_d(dst, src1); |
| 2506 | } else { |
| 2507 | Label right; |
| 2508 | BranchF64(&right, nullptr, gt, src1, src2); |
| 2509 | Move_d(dst, src1); |
| 2510 | Branch(&skip); |
| 2511 | bind(&right); |
| 2512 | Move_d(dst, src2); |
| 2513 | } |
| 2514 | } |
| 2515 | bind(&skip); |
| 2516 | } |
| 2517 | } |
| 2518 | |
| 2519 | void MacroAssembler::MaxNaNCheck_d(FPURegister dst, FPURegister src1, |
| 2520 | FPURegister src2, Label* nan) { |
| 2521 | if (nan) { |
| 2522 | BranchF64(nullptr, nan, eq, src1, src2); |
| 2523 | } |
| 2524 | if (IsMipsArchVariant(kMips32r6)) { |
| 2525 | max_d(dst, src1, src2); |
| 2526 | } else { |
| 2527 | Label skip; |
| 2528 | if (!ZeroHelper_d(this, MaxMinKind::kMax, dst, src1, src2, &skip)) { |
| 2529 | if (dst.is(src1)) { |
| 2530 | BranchF64(&skip, nullptr, ge, src1, src2); |
| 2531 | Move_d(dst, src2); |
| 2532 | } else if (dst.is(src2)) { |
| 2533 | BranchF64(&skip, nullptr, le, src1, src2); |
| 2534 | Move_d(dst, src1); |
| 2535 | } else { |
| 2536 | Label right; |
| 2537 | BranchF64(&right, nullptr, lt, src1, src2); |
| 2538 | Move_d(dst, src1); |
| 2539 | Branch(&skip); |
| 2540 | bind(&right); |
| 2541 | Move_d(dst, src2); |
| 2542 | } |
| 2543 | } |
| 2544 | bind(&skip); |
| 2545 | } |
| 2546 | } |
| 2547 | |
| 2548 | void MacroAssembler::MinNaNCheck_s(FPURegister dst, FPURegister src1, |
| 2549 | FPURegister src2, Label* nan) { |
| 2550 | if (nan) { |
| 2551 | BranchF32(nullptr, nan, eq, src1, src2); |
| 2552 | } |
| 2553 | if (IsMipsArchVariant(kMips32r6)) { |
| 2554 | min_s(dst, src1, src2); |
| 2555 | } else { |
| 2556 | Label skip; |
| 2557 | if (!ZeroHelper_s(this, MaxMinKind::kMin, dst, src1, src2, &skip)) { |
| 2558 | if (dst.is(src1)) { |
| 2559 | BranchF32(&skip, nullptr, le, src1, src2); |
| 2560 | Move_s(dst, src2); |
| 2561 | } else if (dst.is(src2)) { |
| 2562 | BranchF32(&skip, nullptr, ge, src1, src2); |
| 2563 | Move_s(dst, src1); |
| 2564 | } else { |
| 2565 | Label right; |
| 2566 | BranchF32(&right, nullptr, gt, src1, src2); |
| 2567 | Move_s(dst, src1); |
| 2568 | Branch(&skip); |
| 2569 | bind(&right); |
| 2570 | Move_s(dst, src2); |
| 2571 | } |
| 2572 | } |
| 2573 | bind(&skip); |
| 2574 | } |
| 2575 | } |
| 2576 | |
| 2577 | void MacroAssembler::MaxNaNCheck_s(FPURegister dst, FPURegister src1, |
| 2578 | FPURegister src2, Label* nan) { |
| 2579 | if (nan) { |
| 2580 | BranchF32(nullptr, nan, eq, src1, src2); |
| 2581 | } |
| 2582 | if (IsMipsArchVariant(kMips32r6)) { |
| 2583 | max_s(dst, src1, src2); |
| 2584 | } else { |
| 2585 | Label skip; |
| 2586 | if (!ZeroHelper_s(this, MaxMinKind::kMax, dst, src1, src2, &skip)) { |
| 2587 | if (dst.is(src1)) { |
| 2588 | BranchF32(&skip, nullptr, ge, src1, src2); |
| 2589 | Move_s(dst, src2); |
| 2590 | } else if (dst.is(src2)) { |
| 2591 | BranchF32(&skip, nullptr, le, src1, src2); |
| 2592 | Move_s(dst, src1); |
| 2593 | } else { |
| 2594 | Label right; |
| 2595 | BranchF32(&right, nullptr, lt, src1, src2); |
| 2596 | Move_s(dst, src1); |
| 2597 | Branch(&skip); |
| 2598 | bind(&right); |
| 2599 | Move_s(dst, src2); |
| 2600 | } |
| 2601 | } |
| 2602 | bind(&skip); |
| 2603 | } |
| 2604 | } |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2605 | |
| 2606 | void MacroAssembler::Clz(Register rd, Register rs) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2607 | if (IsMipsArchVariant(kLoongson)) { |
| 2608 | DCHECK(!(rd.is(t8) || rd.is(t9)) && !(rs.is(t8) || rs.is(t9))); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2609 | Register mask = t8; |
| 2610 | Register scratch = t9; |
| 2611 | Label loop, end; |
| 2612 | mov(at, rs); |
| 2613 | mov(rd, zero_reg); |
| 2614 | lui(mask, 0x8000); |
| 2615 | bind(&loop); |
| 2616 | and_(scratch, at, mask); |
| 2617 | Branch(&end, ne, scratch, Operand(zero_reg)); |
| 2618 | addiu(rd, rd, 1); |
| 2619 | Branch(&loop, ne, mask, Operand(zero_reg), USE_DELAY_SLOT); |
| 2620 | srl(mask, mask, 1); |
| 2621 | bind(&end); |
| 2622 | } else { |
| 2623 | clz(rd, rs); |
| 2624 | } |
| 2625 | } |
| 2626 | |
| 2627 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2628 | void MacroAssembler::EmitFPUTruncate(FPURoundingMode rounding_mode, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2629 | Register result, |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2630 | DoubleRegister double_input, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2631 | Register scratch, |
| 2632 | DoubleRegister double_scratch, |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2633 | Register except_flag, |
| 2634 | CheckForInexactConversion check_inexact) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2635 | DCHECK(!result.is(scratch)); |
| 2636 | DCHECK(!double_input.is(double_scratch)); |
| 2637 | DCHECK(!except_flag.is(scratch)); |
| 2638 | |
| 2639 | Label done; |
| 2640 | |
| 2641 | // Clear the except flag (0 = no exception) |
| 2642 | mov(except_flag, zero_reg); |
| 2643 | |
| 2644 | // Test for values that can be exactly represented as a signed 32-bit integer. |
| 2645 | cvt_w_d(double_scratch, double_input); |
| 2646 | mfc1(result, double_scratch); |
| 2647 | cvt_d_w(double_scratch, double_scratch); |
| 2648 | BranchF(&done, NULL, eq, double_input, double_scratch); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2649 | |
| 2650 | int32_t except_mask = kFCSRFlagMask; // Assume interested in all exceptions. |
| 2651 | |
| 2652 | if (check_inexact == kDontCheckForInexactConversion) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2653 | // Ignore inexact exceptions. |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2654 | except_mask &= ~kFCSRInexactFlagMask; |
| 2655 | } |
| 2656 | |
| 2657 | // Save FCSR. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2658 | cfc1(scratch, FCSR); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2659 | // Disable FPU exceptions. |
| 2660 | ctc1(zero_reg, FCSR); |
| 2661 | |
| 2662 | // Do operation based on rounding mode. |
| 2663 | switch (rounding_mode) { |
| 2664 | case kRoundToNearest: |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2665 | Round_w_d(double_scratch, double_input); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2666 | break; |
| 2667 | case kRoundToZero: |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2668 | Trunc_w_d(double_scratch, double_input); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2669 | break; |
| 2670 | case kRoundToPlusInf: |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2671 | Ceil_w_d(double_scratch, double_input); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2672 | break; |
| 2673 | case kRoundToMinusInf: |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2674 | Floor_w_d(double_scratch, double_input); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2675 | break; |
| 2676 | } // End of switch-statement. |
| 2677 | |
| 2678 | // Retrieve FCSR. |
| 2679 | cfc1(except_flag, FCSR); |
| 2680 | // Restore FCSR. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2681 | ctc1(scratch, FCSR); |
| 2682 | // Move the converted value into the result register. |
| 2683 | mfc1(result, double_scratch); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2684 | |
| 2685 | // Check for fpu exceptions. |
| 2686 | And(except_flag, except_flag, Operand(except_mask)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2687 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2688 | bind(&done); |
| 2689 | } |
| 2690 | |
| 2691 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2692 | void MacroAssembler::TryInlineTruncateDoubleToI(Register result, |
| 2693 | DoubleRegister double_input, |
| 2694 | Label* done) { |
| 2695 | DoubleRegister single_scratch = kLithiumScratchDouble.low(); |
| 2696 | Register scratch = at; |
| 2697 | Register scratch2 = t9; |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 2698 | |
| 2699 | // Clear cumulative exception flags and save the FCSR. |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 2700 | cfc1(scratch2, FCSR); |
| 2701 | ctc1(zero_reg, FCSR); |
| 2702 | // Try a conversion to a signed integer. |
| 2703 | trunc_w_d(single_scratch, double_input); |
| 2704 | mfc1(result, single_scratch); |
| 2705 | // Retrieve and restore the FCSR. |
| 2706 | cfc1(scratch, FCSR); |
| 2707 | ctc1(scratch2, FCSR); |
| 2708 | // Check for overflow and NaNs. |
| 2709 | And(scratch, |
| 2710 | scratch, |
| 2711 | kFCSROverflowFlagMask | kFCSRUnderflowFlagMask | kFCSRInvalidOpFlagMask); |
| 2712 | // If we had no exceptions we are done. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2713 | Branch(done, eq, scratch, Operand(zero_reg)); |
| 2714 | } |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 2715 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2716 | |
| 2717 | void MacroAssembler::TruncateDoubleToI(Register result, |
| 2718 | DoubleRegister double_input) { |
| 2719 | Label done; |
| 2720 | |
| 2721 | TryInlineTruncateDoubleToI(result, double_input, &done); |
| 2722 | |
| 2723 | // If we fell through then inline version didn't succeed - call stub instead. |
| 2724 | push(ra); |
| 2725 | Subu(sp, sp, Operand(kDoubleSize)); // Put input on stack. |
| 2726 | sdc1(double_input, MemOperand(sp, 0)); |
| 2727 | |
| 2728 | DoubleToIStub stub(isolate(), sp, result, 0, true, true); |
| 2729 | CallStub(&stub); |
| 2730 | |
| 2731 | Addu(sp, sp, Operand(kDoubleSize)); |
| 2732 | pop(ra); |
| 2733 | |
| 2734 | bind(&done); |
| 2735 | } |
| 2736 | |
| 2737 | |
| 2738 | void MacroAssembler::TruncateHeapNumberToI(Register result, Register object) { |
| 2739 | Label done; |
| 2740 | DoubleRegister double_scratch = f12; |
| 2741 | DCHECK(!result.is(object)); |
| 2742 | |
| 2743 | ldc1(double_scratch, |
| 2744 | MemOperand(object, HeapNumber::kValueOffset - kHeapObjectTag)); |
| 2745 | TryInlineTruncateDoubleToI(result, double_scratch, &done); |
| 2746 | |
| 2747 | // If we fell through then inline version didn't succeed - call stub instead. |
| 2748 | push(ra); |
| 2749 | DoubleToIStub stub(isolate(), |
| 2750 | object, |
| 2751 | result, |
| 2752 | HeapNumber::kValueOffset - kHeapObjectTag, |
| 2753 | true, |
| 2754 | true); |
| 2755 | CallStub(&stub); |
| 2756 | pop(ra); |
| 2757 | |
| 2758 | bind(&done); |
| 2759 | } |
| 2760 | |
| 2761 | |
| 2762 | void MacroAssembler::TruncateNumberToI(Register object, |
| 2763 | Register result, |
| 2764 | Register heap_number_map, |
| 2765 | Register scratch, |
| 2766 | Label* not_number) { |
| 2767 | Label done; |
| 2768 | DCHECK(!result.is(object)); |
| 2769 | |
| 2770 | UntagAndJumpIfSmi(result, object, &done); |
| 2771 | JumpIfNotHeapNumber(object, heap_number_map, scratch, not_number); |
| 2772 | TruncateHeapNumberToI(result, object); |
| 2773 | |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 2774 | bind(&done); |
| 2775 | } |
| 2776 | |
| 2777 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2778 | void MacroAssembler::GetLeastBitsFromSmi(Register dst, |
| 2779 | Register src, |
| 2780 | int num_least_bits) { |
| 2781 | Ext(dst, src, kSmiTagSize, num_least_bits); |
| 2782 | } |
| 2783 | |
| 2784 | |
| 2785 | void MacroAssembler::GetLeastBitsFromInt32(Register dst, |
| 2786 | Register src, |
| 2787 | int num_least_bits) { |
| 2788 | And(dst, src, Operand((1 << num_least_bits) - 1)); |
| 2789 | } |
| 2790 | |
| 2791 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2792 | // Emulated condtional branches do not emit a nop in the branch delay slot. |
| 2793 | // |
| 2794 | // BRANCH_ARGS_CHECK checks that conditional jump arguments are correct. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2795 | #define BRANCH_ARGS_CHECK(cond, rs, rt) DCHECK( \ |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2796 | (cond == cc_always && rs.is(zero_reg) && rt.rm().is(zero_reg)) || \ |
| 2797 | (cond != cc_always && (!rs.is(zero_reg) || !rt.rm().is(zero_reg)))) |
| 2798 | |
| 2799 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2800 | void MacroAssembler::Branch(int32_t offset, BranchDelaySlot bdslot) { |
| 2801 | DCHECK(IsMipsArchVariant(kMips32r6) ? is_int26(offset) : is_int16(offset)); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 2802 | BranchShort(offset, bdslot); |
| 2803 | } |
| 2804 | |
| 2805 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2806 | void MacroAssembler::Branch(int32_t offset, Condition cond, Register rs, |
| 2807 | const Operand& rt, BranchDelaySlot bdslot) { |
| 2808 | bool is_near = BranchShortCheck(offset, nullptr, cond, rs, rt, bdslot); |
| 2809 | DCHECK(is_near); |
| 2810 | USE(is_near); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 2811 | } |
| 2812 | |
| 2813 | |
| 2814 | void MacroAssembler::Branch(Label* L, BranchDelaySlot bdslot) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2815 | if (L->is_bound()) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2816 | if (is_near_branch(L)) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2817 | BranchShort(L, bdslot); |
| 2818 | } else { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2819 | BranchLong(L, bdslot); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2820 | } |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 2821 | } else { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2822 | if (is_trampoline_emitted()) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2823 | BranchLong(L, bdslot); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2824 | } else { |
| 2825 | BranchShort(L, bdslot); |
| 2826 | } |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 2827 | } |
| 2828 | } |
| 2829 | |
| 2830 | |
| 2831 | void MacroAssembler::Branch(Label* L, Condition cond, Register rs, |
| 2832 | const Operand& rt, |
| 2833 | BranchDelaySlot bdslot) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2834 | if (L->is_bound()) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2835 | if (!BranchShortCheck(0, L, cond, rs, rt, bdslot)) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2836 | if (cond != cc_always) { |
| 2837 | Label skip; |
| 2838 | Condition neg_cond = NegateCondition(cond); |
| 2839 | BranchShort(&skip, neg_cond, rs, rt); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2840 | BranchLong(L, bdslot); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2841 | bind(&skip); |
| 2842 | } else { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2843 | BranchLong(L, bdslot); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2844 | } |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2845 | } |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 2846 | } else { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2847 | if (is_trampoline_emitted()) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2848 | if (cond != cc_always) { |
| 2849 | Label skip; |
| 2850 | Condition neg_cond = NegateCondition(cond); |
| 2851 | BranchShort(&skip, neg_cond, rs, rt); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2852 | BranchLong(L, bdslot); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2853 | bind(&skip); |
| 2854 | } else { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2855 | BranchLong(L, bdslot); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2856 | } |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2857 | } else { |
| 2858 | BranchShort(L, cond, rs, rt, bdslot); |
| 2859 | } |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 2860 | } |
| 2861 | } |
| 2862 | |
| 2863 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2864 | void MacroAssembler::Branch(Label* L, |
| 2865 | Condition cond, |
| 2866 | Register rs, |
| 2867 | Heap::RootListIndex index, |
| 2868 | BranchDelaySlot bdslot) { |
| 2869 | LoadRoot(at, index); |
| 2870 | Branch(L, cond, rs, Operand(at), bdslot); |
| 2871 | } |
| 2872 | |
| 2873 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2874 | void MacroAssembler::BranchShortHelper(int16_t offset, Label* L, |
| 2875 | BranchDelaySlot bdslot) { |
| 2876 | DCHECK(L == nullptr || offset == 0); |
| 2877 | offset = GetOffset(offset, L, OffsetSize::kOffset16); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2878 | b(offset); |
| 2879 | |
| 2880 | // Emit a nop in the branch delay slot if required. |
| 2881 | if (bdslot == PROTECT) |
| 2882 | nop(); |
| 2883 | } |
| 2884 | |
| 2885 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2886 | void MacroAssembler::BranchShortHelperR6(int32_t offset, Label* L) { |
| 2887 | DCHECK(L == nullptr || offset == 0); |
| 2888 | offset = GetOffset(offset, L, OffsetSize::kOffset26); |
| 2889 | bc(offset); |
| 2890 | } |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2891 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2892 | |
| 2893 | void MacroAssembler::BranchShort(int32_t offset, BranchDelaySlot bdslot) { |
| 2894 | if (IsMipsArchVariant(kMips32r6) && bdslot == PROTECT) { |
| 2895 | DCHECK(is_int26(offset)); |
| 2896 | BranchShortHelperR6(offset, nullptr); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2897 | } else { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2898 | DCHECK(is_int16(offset)); |
| 2899 | BranchShortHelper(offset, nullptr, bdslot); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 2900 | } |
| 2901 | } |
| 2902 | |
| 2903 | |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 2904 | void MacroAssembler::BranchShort(Label* L, BranchDelaySlot bdslot) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2905 | if (IsMipsArchVariant(kMips32r6) && bdslot == PROTECT) { |
| 2906 | BranchShortHelperR6(0, L); |
| 2907 | } else { |
| 2908 | BranchShortHelper(0, L, bdslot); |
| 2909 | } |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 2910 | } |
| 2911 | |
| 2912 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2913 | static inline bool IsZero(const Operand& rt) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2914 | if (rt.is_reg()) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2915 | return rt.rm().is(zero_reg); |
| 2916 | } else { |
| 2917 | return rt.immediate() == 0; |
| 2918 | } |
| 2919 | } |
| 2920 | |
| 2921 | |
| 2922 | int32_t MacroAssembler::GetOffset(int32_t offset, Label* L, OffsetSize bits) { |
| 2923 | if (L) { |
| 2924 | offset = branch_offset_helper(L, bits) >> 2; |
| 2925 | } else { |
| 2926 | DCHECK(is_intn(offset, bits)); |
| 2927 | } |
| 2928 | return offset; |
| 2929 | } |
| 2930 | |
| 2931 | |
| 2932 | Register MacroAssembler::GetRtAsRegisterHelper(const Operand& rt, |
| 2933 | Register scratch) { |
| 2934 | Register r2 = no_reg; |
| 2935 | if (rt.is_reg()) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2936 | r2 = rt.rm_; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2937 | } else { |
| 2938 | r2 = scratch; |
| 2939 | li(r2, rt); |
| 2940 | } |
| 2941 | |
| 2942 | return r2; |
| 2943 | } |
| 2944 | |
| 2945 | |
| 2946 | bool MacroAssembler::BranchShortHelperR6(int32_t offset, Label* L, |
| 2947 | Condition cond, Register rs, |
| 2948 | const Operand& rt) { |
| 2949 | DCHECK(L == nullptr || offset == 0); |
| 2950 | Register scratch = rs.is(at) ? t8 : at; |
| 2951 | OffsetSize bits = OffsetSize::kOffset16; |
| 2952 | |
| 2953 | // Be careful to always use shifted_branch_offset only just before the |
| 2954 | // branch instruction, as the location will be remember for patching the |
| 2955 | // target. |
| 2956 | { |
| 2957 | BlockTrampolinePoolScope block_trampoline_pool(this); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2958 | switch (cond) { |
| 2959 | case cc_always: |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2960 | bits = OffsetSize::kOffset26; |
| 2961 | if (!is_near(L, bits)) return false; |
| 2962 | offset = GetOffset(offset, L, bits); |
| 2963 | bc(offset); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2964 | break; |
| 2965 | case eq: |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2966 | if (rs.code() == rt.rm_.reg_code) { |
| 2967 | // Pre R6 beq is used here to make the code patchable. Otherwise bc |
| 2968 | // should be used which has no condition field so is not patchable. |
| 2969 | bits = OffsetSize::kOffset16; |
| 2970 | if (!is_near(L, bits)) return false; |
| 2971 | scratch = GetRtAsRegisterHelper(rt, scratch); |
| 2972 | offset = GetOffset(offset, L, bits); |
| 2973 | beq(rs, scratch, offset); |
| 2974 | nop(); |
| 2975 | } else if (IsZero(rt)) { |
| 2976 | bits = OffsetSize::kOffset21; |
| 2977 | if (!is_near(L, bits)) return false; |
| 2978 | offset = GetOffset(offset, L, bits); |
| 2979 | beqzc(rs, offset); |
| 2980 | } else { |
| 2981 | // We don't want any other register but scratch clobbered. |
| 2982 | bits = OffsetSize::kOffset16; |
| 2983 | if (!is_near(L, bits)) return false; |
| 2984 | scratch = GetRtAsRegisterHelper(rt, scratch); |
| 2985 | offset = GetOffset(offset, L, bits); |
| 2986 | beqc(rs, scratch, offset); |
| 2987 | } |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2988 | break; |
| 2989 | case ne: |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2990 | if (rs.code() == rt.rm_.reg_code) { |
| 2991 | // Pre R6 bne is used here to make the code patchable. Otherwise we |
| 2992 | // should not generate any instruction. |
| 2993 | bits = OffsetSize::kOffset16; |
| 2994 | if (!is_near(L, bits)) return false; |
| 2995 | scratch = GetRtAsRegisterHelper(rt, scratch); |
| 2996 | offset = GetOffset(offset, L, bits); |
| 2997 | bne(rs, scratch, offset); |
| 2998 | nop(); |
| 2999 | } else if (IsZero(rt)) { |
| 3000 | bits = OffsetSize::kOffset21; |
| 3001 | if (!is_near(L, bits)) return false; |
| 3002 | offset = GetOffset(offset, L, bits); |
| 3003 | bnezc(rs, offset); |
| 3004 | } else { |
| 3005 | // We don't want any other register but scratch clobbered. |
| 3006 | bits = OffsetSize::kOffset16; |
| 3007 | if (!is_near(L, bits)) return false; |
| 3008 | scratch = GetRtAsRegisterHelper(rt, scratch); |
| 3009 | offset = GetOffset(offset, L, bits); |
| 3010 | bnec(rs, scratch, offset); |
| 3011 | } |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3012 | break; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3013 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3014 | // Signed comparison. |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3015 | case greater: |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3016 | // rs > rt |
| 3017 | if (rs.code() == rt.rm_.reg_code) { |
| 3018 | break; // No code needs to be emitted. |
| 3019 | } else if (rs.is(zero_reg)) { |
| 3020 | bits = OffsetSize::kOffset16; |
| 3021 | if (!is_near(L, bits)) return false; |
| 3022 | scratch = GetRtAsRegisterHelper(rt, scratch); |
| 3023 | offset = GetOffset(offset, L, bits); |
| 3024 | bltzc(scratch, offset); |
| 3025 | } else if (IsZero(rt)) { |
| 3026 | bits = OffsetSize::kOffset16; |
| 3027 | if (!is_near(L, bits)) return false; |
| 3028 | offset = GetOffset(offset, L, bits); |
| 3029 | bgtzc(rs, offset); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3030 | } else { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3031 | bits = OffsetSize::kOffset16; |
| 3032 | if (!is_near(L, bits)) return false; |
| 3033 | scratch = GetRtAsRegisterHelper(rt, scratch); |
| 3034 | DCHECK(!rs.is(scratch)); |
| 3035 | offset = GetOffset(offset, L, bits); |
| 3036 | bltc(scratch, rs, offset); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3037 | } |
| 3038 | break; |
| 3039 | case greater_equal: |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3040 | // rs >= rt |
| 3041 | if (rs.code() == rt.rm_.reg_code) { |
| 3042 | bits = OffsetSize::kOffset26; |
| 3043 | if (!is_near(L, bits)) return false; |
| 3044 | offset = GetOffset(offset, L, bits); |
| 3045 | bc(offset); |
| 3046 | } else if (rs.is(zero_reg)) { |
| 3047 | bits = OffsetSize::kOffset16; |
| 3048 | if (!is_near(L, bits)) return false; |
| 3049 | scratch = GetRtAsRegisterHelper(rt, scratch); |
| 3050 | offset = GetOffset(offset, L, bits); |
| 3051 | blezc(scratch, offset); |
| 3052 | } else if (IsZero(rt)) { |
| 3053 | bits = OffsetSize::kOffset16; |
| 3054 | if (!is_near(L, bits)) return false; |
| 3055 | offset = GetOffset(offset, L, bits); |
| 3056 | bgezc(rs, offset); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3057 | } else { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3058 | bits = OffsetSize::kOffset16; |
| 3059 | if (!is_near(L, bits)) return false; |
| 3060 | scratch = GetRtAsRegisterHelper(rt, scratch); |
| 3061 | DCHECK(!rs.is(scratch)); |
| 3062 | offset = GetOffset(offset, L, bits); |
| 3063 | bgec(rs, scratch, offset); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3064 | } |
| 3065 | break; |
| 3066 | case less: |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3067 | // rs < rt |
| 3068 | if (rs.code() == rt.rm_.reg_code) { |
| 3069 | break; // No code needs to be emitted. |
| 3070 | } else if (rs.is(zero_reg)) { |
| 3071 | bits = OffsetSize::kOffset16; |
| 3072 | if (!is_near(L, bits)) return false; |
| 3073 | scratch = GetRtAsRegisterHelper(rt, scratch); |
| 3074 | offset = GetOffset(offset, L, bits); |
| 3075 | bgtzc(scratch, offset); |
| 3076 | } else if (IsZero(rt)) { |
| 3077 | bits = OffsetSize::kOffset16; |
| 3078 | if (!is_near(L, bits)) return false; |
| 3079 | offset = GetOffset(offset, L, bits); |
| 3080 | bltzc(rs, offset); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3081 | } else { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3082 | bits = OffsetSize::kOffset16; |
| 3083 | if (!is_near(L, bits)) return false; |
| 3084 | scratch = GetRtAsRegisterHelper(rt, scratch); |
| 3085 | DCHECK(!rs.is(scratch)); |
| 3086 | offset = GetOffset(offset, L, bits); |
| 3087 | bltc(rs, scratch, offset); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3088 | } |
| 3089 | break; |
| 3090 | case less_equal: |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3091 | // rs <= rt |
| 3092 | if (rs.code() == rt.rm_.reg_code) { |
| 3093 | bits = OffsetSize::kOffset26; |
| 3094 | if (!is_near(L, bits)) return false; |
| 3095 | offset = GetOffset(offset, L, bits); |
| 3096 | bc(offset); |
| 3097 | } else if (rs.is(zero_reg)) { |
| 3098 | bits = OffsetSize::kOffset16; |
| 3099 | if (!is_near(L, bits)) return false; |
| 3100 | scratch = GetRtAsRegisterHelper(rt, scratch); |
| 3101 | offset = GetOffset(offset, L, bits); |
| 3102 | bgezc(scratch, offset); |
| 3103 | } else if (IsZero(rt)) { |
| 3104 | bits = OffsetSize::kOffset16; |
| 3105 | if (!is_near(L, bits)) return false; |
| 3106 | offset = GetOffset(offset, L, bits); |
| 3107 | blezc(rs, offset); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3108 | } else { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3109 | bits = OffsetSize::kOffset16; |
| 3110 | if (!is_near(L, bits)) return false; |
| 3111 | scratch = GetRtAsRegisterHelper(rt, scratch); |
| 3112 | DCHECK(!rs.is(scratch)); |
| 3113 | offset = GetOffset(offset, L, bits); |
| 3114 | bgec(scratch, rs, offset); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3115 | } |
| 3116 | break; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3117 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3118 | // Unsigned comparison. |
| 3119 | case Ugreater: |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3120 | // rs > rt |
| 3121 | if (rs.code() == rt.rm_.reg_code) { |
| 3122 | break; // No code needs to be emitted. |
| 3123 | } else if (rs.is(zero_reg)) { |
| 3124 | bits = OffsetSize::kOffset21; |
| 3125 | if (!is_near(L, bits)) return false; |
| 3126 | scratch = GetRtAsRegisterHelper(rt, scratch); |
| 3127 | offset = GetOffset(offset, L, bits); |
| 3128 | bnezc(scratch, offset); |
| 3129 | } else if (IsZero(rt)) { |
| 3130 | bits = OffsetSize::kOffset21; |
| 3131 | if (!is_near(L, bits)) return false; |
| 3132 | offset = GetOffset(offset, L, bits); |
| 3133 | bnezc(rs, offset); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3134 | } else { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3135 | bits = OffsetSize::kOffset16; |
| 3136 | if (!is_near(L, bits)) return false; |
| 3137 | scratch = GetRtAsRegisterHelper(rt, scratch); |
| 3138 | DCHECK(!rs.is(scratch)); |
| 3139 | offset = GetOffset(offset, L, bits); |
| 3140 | bltuc(scratch, rs, offset); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3141 | } |
| 3142 | break; |
| 3143 | case Ugreater_equal: |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3144 | // rs >= rt |
| 3145 | if (rs.code() == rt.rm_.reg_code) { |
| 3146 | bits = OffsetSize::kOffset26; |
| 3147 | if (!is_near(L, bits)) return false; |
| 3148 | offset = GetOffset(offset, L, bits); |
| 3149 | bc(offset); |
| 3150 | } else if (rs.is(zero_reg)) { |
| 3151 | bits = OffsetSize::kOffset21; |
| 3152 | if (!is_near(L, bits)) return false; |
| 3153 | scratch = GetRtAsRegisterHelper(rt, scratch); |
| 3154 | offset = GetOffset(offset, L, bits); |
| 3155 | beqzc(scratch, offset); |
| 3156 | } else if (IsZero(rt)) { |
| 3157 | bits = OffsetSize::kOffset26; |
| 3158 | if (!is_near(L, bits)) return false; |
| 3159 | offset = GetOffset(offset, L, bits); |
| 3160 | bc(offset); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3161 | } else { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3162 | bits = OffsetSize::kOffset16; |
| 3163 | if (!is_near(L, bits)) return false; |
| 3164 | scratch = GetRtAsRegisterHelper(rt, scratch); |
| 3165 | DCHECK(!rs.is(scratch)); |
| 3166 | offset = GetOffset(offset, L, bits); |
| 3167 | bgeuc(rs, scratch, offset); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3168 | } |
| 3169 | break; |
| 3170 | case Uless: |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3171 | // rs < rt |
| 3172 | if (rs.code() == rt.rm_.reg_code) { |
| 3173 | break; // No code needs to be emitted. |
| 3174 | } else if (rs.is(zero_reg)) { |
| 3175 | bits = OffsetSize::kOffset21; |
| 3176 | if (!is_near(L, bits)) return false; |
| 3177 | scratch = GetRtAsRegisterHelper(rt, scratch); |
| 3178 | offset = GetOffset(offset, L, bits); |
| 3179 | bnezc(scratch, offset); |
| 3180 | } else if (IsZero(rt)) { |
| 3181 | break; // No code needs to be emitted. |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3182 | } else { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3183 | bits = OffsetSize::kOffset16; |
| 3184 | if (!is_near(L, bits)) return false; |
| 3185 | scratch = GetRtAsRegisterHelper(rt, scratch); |
| 3186 | DCHECK(!rs.is(scratch)); |
| 3187 | offset = GetOffset(offset, L, bits); |
| 3188 | bltuc(rs, scratch, offset); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3189 | } |
| 3190 | break; |
| 3191 | case Uless_equal: |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3192 | // rs <= rt |
| 3193 | if (rs.code() == rt.rm_.reg_code) { |
| 3194 | bits = OffsetSize::kOffset26; |
| 3195 | if (!is_near(L, bits)) return false; |
| 3196 | offset = GetOffset(offset, L, bits); |
| 3197 | bc(offset); |
| 3198 | } else if (rs.is(zero_reg)) { |
| 3199 | bits = OffsetSize::kOffset26; |
| 3200 | if (!is_near(L, bits)) return false; |
| 3201 | scratch = GetRtAsRegisterHelper(rt, scratch); |
| 3202 | offset = GetOffset(offset, L, bits); |
| 3203 | bc(offset); |
| 3204 | } else if (IsZero(rt)) { |
| 3205 | bits = OffsetSize::kOffset21; |
| 3206 | if (!is_near(L, bits)) return false; |
| 3207 | offset = GetOffset(offset, L, bits); |
| 3208 | beqzc(rs, offset); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3209 | } else { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3210 | bits = OffsetSize::kOffset16; |
| 3211 | if (!is_near(L, bits)) return false; |
| 3212 | scratch = GetRtAsRegisterHelper(rt, scratch); |
| 3213 | DCHECK(!rs.is(scratch)); |
| 3214 | offset = GetOffset(offset, L, bits); |
| 3215 | bgeuc(scratch, rs, offset); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3216 | } |
| 3217 | break; |
| 3218 | default: |
| 3219 | UNREACHABLE(); |
| 3220 | } |
| 3221 | } |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3222 | CheckTrampolinePoolQuick(1); |
| 3223 | return true; |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3224 | } |
| 3225 | |
| 3226 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3227 | bool MacroAssembler::BranchShortHelper(int16_t offset, Label* L, Condition cond, |
| 3228 | Register rs, const Operand& rt, |
| 3229 | BranchDelaySlot bdslot) { |
| 3230 | DCHECK(L == nullptr || offset == 0); |
| 3231 | if (!is_near(L, OffsetSize::kOffset16)) return false; |
| 3232 | |
| 3233 | Register scratch = at; |
| 3234 | int32_t offset32; |
| 3235 | |
| 3236 | // Be careful to always use shifted_branch_offset only just before the |
| 3237 | // branch instruction, as the location will be remember for patching the |
| 3238 | // target. |
| 3239 | { |
| 3240 | BlockTrampolinePoolScope block_trampoline_pool(this); |
| 3241 | switch (cond) { |
| 3242 | case cc_always: |
| 3243 | offset32 = GetOffset(offset, L, OffsetSize::kOffset16); |
| 3244 | b(offset32); |
| 3245 | break; |
| 3246 | case eq: |
| 3247 | if (IsZero(rt)) { |
| 3248 | offset32 = GetOffset(offset, L, OffsetSize::kOffset16); |
| 3249 | beq(rs, zero_reg, offset32); |
| 3250 | } else { |
| 3251 | // We don't want any other register but scratch clobbered. |
| 3252 | scratch = GetRtAsRegisterHelper(rt, scratch); |
| 3253 | offset32 = GetOffset(offset, L, OffsetSize::kOffset16); |
| 3254 | beq(rs, scratch, offset32); |
| 3255 | } |
| 3256 | break; |
| 3257 | case ne: |
| 3258 | if (IsZero(rt)) { |
| 3259 | offset32 = GetOffset(offset, L, OffsetSize::kOffset16); |
| 3260 | bne(rs, zero_reg, offset32); |
| 3261 | } else { |
| 3262 | // We don't want any other register but scratch clobbered. |
| 3263 | scratch = GetRtAsRegisterHelper(rt, scratch); |
| 3264 | offset32 = GetOffset(offset, L, OffsetSize::kOffset16); |
| 3265 | bne(rs, scratch, offset32); |
| 3266 | } |
| 3267 | break; |
| 3268 | |
| 3269 | // Signed comparison. |
| 3270 | case greater: |
| 3271 | if (IsZero(rt)) { |
| 3272 | offset32 = GetOffset(offset, L, OffsetSize::kOffset16); |
| 3273 | bgtz(rs, offset32); |
| 3274 | } else { |
| 3275 | Slt(scratch, GetRtAsRegisterHelper(rt, scratch), rs); |
| 3276 | offset32 = GetOffset(offset, L, OffsetSize::kOffset16); |
| 3277 | bne(scratch, zero_reg, offset32); |
| 3278 | } |
| 3279 | break; |
| 3280 | case greater_equal: |
| 3281 | if (IsZero(rt)) { |
| 3282 | offset32 = GetOffset(offset, L, OffsetSize::kOffset16); |
| 3283 | bgez(rs, offset32); |
| 3284 | } else { |
| 3285 | Slt(scratch, rs, rt); |
| 3286 | offset32 = GetOffset(offset, L, OffsetSize::kOffset16); |
| 3287 | beq(scratch, zero_reg, offset32); |
| 3288 | } |
| 3289 | break; |
| 3290 | case less: |
| 3291 | if (IsZero(rt)) { |
| 3292 | offset32 = GetOffset(offset, L, OffsetSize::kOffset16); |
| 3293 | bltz(rs, offset32); |
| 3294 | } else { |
| 3295 | Slt(scratch, rs, rt); |
| 3296 | offset32 = GetOffset(offset, L, OffsetSize::kOffset16); |
| 3297 | bne(scratch, zero_reg, offset32); |
| 3298 | } |
| 3299 | break; |
| 3300 | case less_equal: |
| 3301 | if (IsZero(rt)) { |
| 3302 | offset32 = GetOffset(offset, L, OffsetSize::kOffset16); |
| 3303 | blez(rs, offset32); |
| 3304 | } else { |
| 3305 | Slt(scratch, GetRtAsRegisterHelper(rt, scratch), rs); |
| 3306 | offset32 = GetOffset(offset, L, OffsetSize::kOffset16); |
| 3307 | beq(scratch, zero_reg, offset32); |
| 3308 | } |
| 3309 | break; |
| 3310 | |
| 3311 | // Unsigned comparison. |
| 3312 | case Ugreater: |
| 3313 | if (IsZero(rt)) { |
| 3314 | offset32 = GetOffset(offset, L, OffsetSize::kOffset16); |
| 3315 | bne(rs, zero_reg, offset32); |
| 3316 | } else { |
| 3317 | Sltu(scratch, GetRtAsRegisterHelper(rt, scratch), rs); |
| 3318 | offset32 = GetOffset(offset, L, OffsetSize::kOffset16); |
| 3319 | bne(scratch, zero_reg, offset32); |
| 3320 | } |
| 3321 | break; |
| 3322 | case Ugreater_equal: |
| 3323 | if (IsZero(rt)) { |
| 3324 | offset32 = GetOffset(offset, L, OffsetSize::kOffset16); |
| 3325 | b(offset32); |
| 3326 | } else { |
| 3327 | Sltu(scratch, rs, rt); |
| 3328 | offset32 = GetOffset(offset, L, OffsetSize::kOffset16); |
| 3329 | beq(scratch, zero_reg, offset32); |
| 3330 | } |
| 3331 | break; |
| 3332 | case Uless: |
| 3333 | if (IsZero(rt)) { |
| 3334 | return true; // No code needs to be emitted. |
| 3335 | } else { |
| 3336 | Sltu(scratch, rs, rt); |
| 3337 | offset32 = GetOffset(offset, L, OffsetSize::kOffset16); |
| 3338 | bne(scratch, zero_reg, offset32); |
| 3339 | } |
| 3340 | break; |
| 3341 | case Uless_equal: |
| 3342 | if (IsZero(rt)) { |
| 3343 | offset32 = GetOffset(offset, L, OffsetSize::kOffset16); |
| 3344 | beq(rs, zero_reg, offset32); |
| 3345 | } else { |
| 3346 | Sltu(scratch, GetRtAsRegisterHelper(rt, scratch), rs); |
| 3347 | offset32 = GetOffset(offset, L, OffsetSize::kOffset16); |
| 3348 | beq(scratch, zero_reg, offset32); |
| 3349 | } |
| 3350 | break; |
| 3351 | default: |
| 3352 | UNREACHABLE(); |
| 3353 | } |
| 3354 | } |
| 3355 | // Emit a nop in the branch delay slot if required. |
| 3356 | if (bdslot == PROTECT) |
| 3357 | nop(); |
| 3358 | |
| 3359 | return true; |
| 3360 | } |
| 3361 | |
| 3362 | |
| 3363 | bool MacroAssembler::BranchShortCheck(int32_t offset, Label* L, Condition cond, |
| 3364 | Register rs, const Operand& rt, |
| 3365 | BranchDelaySlot bdslot) { |
| 3366 | BRANCH_ARGS_CHECK(cond, rs, rt); |
| 3367 | |
| 3368 | if (!L) { |
| 3369 | if (IsMipsArchVariant(kMips32r6) && bdslot == PROTECT) { |
| 3370 | DCHECK(is_int26(offset)); |
| 3371 | return BranchShortHelperR6(offset, nullptr, cond, rs, rt); |
| 3372 | } else { |
| 3373 | DCHECK(is_int16(offset)); |
| 3374 | return BranchShortHelper(offset, nullptr, cond, rs, rt, bdslot); |
| 3375 | } |
| 3376 | } else { |
| 3377 | DCHECK(offset == 0); |
| 3378 | if (IsMipsArchVariant(kMips32r6) && bdslot == PROTECT) { |
| 3379 | return BranchShortHelperR6(0, L, cond, rs, rt); |
| 3380 | } else { |
| 3381 | return BranchShortHelper(0, L, cond, rs, rt, bdslot); |
| 3382 | } |
| 3383 | } |
| 3384 | return false; |
| 3385 | } |
| 3386 | |
| 3387 | |
| 3388 | void MacroAssembler::BranchShort(int32_t offset, Condition cond, Register rs, |
| 3389 | const Operand& rt, BranchDelaySlot bdslot) { |
| 3390 | BranchShortCheck(offset, nullptr, cond, rs, rt, bdslot); |
| 3391 | } |
| 3392 | |
| 3393 | |
| 3394 | void MacroAssembler::BranchShort(Label* L, Condition cond, Register rs, |
| 3395 | const Operand& rt, BranchDelaySlot bdslot) { |
| 3396 | BranchShortCheck(0, L, cond, rs, rt, bdslot); |
| 3397 | } |
| 3398 | |
| 3399 | |
| 3400 | void MacroAssembler::BranchAndLink(int32_t offset, BranchDelaySlot bdslot) { |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 3401 | BranchAndLinkShort(offset, bdslot); |
| 3402 | } |
| 3403 | |
| 3404 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3405 | void MacroAssembler::BranchAndLink(int32_t offset, Condition cond, Register rs, |
| 3406 | const Operand& rt, BranchDelaySlot bdslot) { |
| 3407 | bool is_near = BranchAndLinkShortCheck(offset, nullptr, cond, rs, rt, bdslot); |
| 3408 | DCHECK(is_near); |
| 3409 | USE(is_near); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 3410 | } |
| 3411 | |
| 3412 | |
| 3413 | void MacroAssembler::BranchAndLink(Label* L, BranchDelaySlot bdslot) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3414 | if (L->is_bound()) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3415 | if (is_near_branch(L)) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3416 | BranchAndLinkShort(L, bdslot); |
| 3417 | } else { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3418 | BranchAndLinkLong(L, bdslot); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3419 | } |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 3420 | } else { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3421 | if (is_trampoline_emitted()) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3422 | BranchAndLinkLong(L, bdslot); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3423 | } else { |
| 3424 | BranchAndLinkShort(L, bdslot); |
| 3425 | } |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 3426 | } |
| 3427 | } |
| 3428 | |
| 3429 | |
| 3430 | void MacroAssembler::BranchAndLink(Label* L, Condition cond, Register rs, |
| 3431 | const Operand& rt, |
| 3432 | BranchDelaySlot bdslot) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3433 | if (L->is_bound()) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3434 | if (!BranchAndLinkShortCheck(0, L, cond, rs, rt, bdslot)) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3435 | Label skip; |
| 3436 | Condition neg_cond = NegateCondition(cond); |
| 3437 | BranchShort(&skip, neg_cond, rs, rt); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3438 | BranchAndLinkLong(L, bdslot); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3439 | bind(&skip); |
| 3440 | } |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 3441 | } else { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3442 | if (is_trampoline_emitted()) { |
| 3443 | Label skip; |
| 3444 | Condition neg_cond = NegateCondition(cond); |
| 3445 | BranchShort(&skip, neg_cond, rs, rt); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3446 | BranchAndLinkLong(L, bdslot); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3447 | bind(&skip); |
| 3448 | } else { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3449 | BranchAndLinkShortCheck(0, L, cond, rs, rt, bdslot); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3450 | } |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 3451 | } |
| 3452 | } |
| 3453 | |
| 3454 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3455 | void MacroAssembler::BranchAndLinkShortHelper(int16_t offset, Label* L, |
| 3456 | BranchDelaySlot bdslot) { |
| 3457 | DCHECK(L == nullptr || offset == 0); |
| 3458 | offset = GetOffset(offset, L, OffsetSize::kOffset16); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3459 | bal(offset); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 3460 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3461 | // Emit a nop in the branch delay slot if required. |
| 3462 | if (bdslot == PROTECT) |
| 3463 | nop(); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 3464 | } |
| 3465 | |
| 3466 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3467 | void MacroAssembler::BranchAndLinkShortHelperR6(int32_t offset, Label* L) { |
| 3468 | DCHECK(L == nullptr || offset == 0); |
| 3469 | offset = GetOffset(offset, L, OffsetSize::kOffset26); |
| 3470 | balc(offset); |
| 3471 | } |
| 3472 | |
| 3473 | |
| 3474 | void MacroAssembler::BranchAndLinkShort(int32_t offset, |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 3475 | BranchDelaySlot bdslot) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3476 | if (IsMipsArchVariant(kMips32r6) && bdslot == PROTECT) { |
| 3477 | DCHECK(is_int26(offset)); |
| 3478 | BranchAndLinkShortHelperR6(offset, nullptr); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3479 | } else { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3480 | DCHECK(is_int16(offset)); |
| 3481 | BranchAndLinkShortHelper(offset, nullptr, bdslot); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 3482 | } |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3483 | } |
| 3484 | |
| 3485 | |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 3486 | void MacroAssembler::BranchAndLinkShort(Label* L, BranchDelaySlot bdslot) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3487 | if (IsMipsArchVariant(kMips32r6) && bdslot == PROTECT) { |
| 3488 | BranchAndLinkShortHelperR6(0, L); |
| 3489 | } else { |
| 3490 | BranchAndLinkShortHelper(0, L, bdslot); |
| 3491 | } |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3492 | } |
| 3493 | |
| 3494 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3495 | bool MacroAssembler::BranchAndLinkShortHelperR6(int32_t offset, Label* L, |
| 3496 | Condition cond, Register rs, |
| 3497 | const Operand& rt) { |
| 3498 | DCHECK(L == nullptr || offset == 0); |
| 3499 | Register scratch = rs.is(at) ? t8 : at; |
| 3500 | OffsetSize bits = OffsetSize::kOffset16; |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3501 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3502 | BlockTrampolinePoolScope block_trampoline_pool(this); |
| 3503 | DCHECK((cond == cc_always && is_int26(offset)) || is_int16(offset)); |
| 3504 | switch (cond) { |
| 3505 | case cc_always: |
| 3506 | bits = OffsetSize::kOffset26; |
| 3507 | if (!is_near(L, bits)) return false; |
| 3508 | offset = GetOffset(offset, L, bits); |
| 3509 | balc(offset); |
| 3510 | break; |
| 3511 | case eq: |
| 3512 | if (!is_near(L, bits)) return false; |
| 3513 | Subu(scratch, rs, rt); |
| 3514 | offset = GetOffset(offset, L, bits); |
| 3515 | beqzalc(scratch, offset); |
| 3516 | break; |
| 3517 | case ne: |
| 3518 | if (!is_near(L, bits)) return false; |
| 3519 | Subu(scratch, rs, rt); |
| 3520 | offset = GetOffset(offset, L, bits); |
| 3521 | bnezalc(scratch, offset); |
| 3522 | break; |
| 3523 | |
| 3524 | // Signed comparison. |
| 3525 | case greater: |
| 3526 | // rs > rt |
| 3527 | if (rs.code() == rt.rm_.reg_code) { |
| 3528 | break; // No code needs to be emitted. |
| 3529 | } else if (rs.is(zero_reg)) { |
| 3530 | if (!is_near(L, bits)) return false; |
| 3531 | scratch = GetRtAsRegisterHelper(rt, scratch); |
| 3532 | offset = GetOffset(offset, L, bits); |
| 3533 | bltzalc(scratch, offset); |
| 3534 | } else if (IsZero(rt)) { |
| 3535 | if (!is_near(L, bits)) return false; |
| 3536 | offset = GetOffset(offset, L, bits); |
| 3537 | bgtzalc(rs, offset); |
| 3538 | } else { |
| 3539 | if (!is_near(L, bits)) return false; |
| 3540 | Slt(scratch, GetRtAsRegisterHelper(rt, scratch), rs); |
| 3541 | offset = GetOffset(offset, L, bits); |
| 3542 | bnezalc(scratch, offset); |
| 3543 | } |
| 3544 | break; |
| 3545 | case greater_equal: |
| 3546 | // rs >= rt |
| 3547 | if (rs.code() == rt.rm_.reg_code) { |
| 3548 | bits = OffsetSize::kOffset26; |
| 3549 | if (!is_near(L, bits)) return false; |
| 3550 | offset = GetOffset(offset, L, bits); |
| 3551 | balc(offset); |
| 3552 | } else if (rs.is(zero_reg)) { |
| 3553 | if (!is_near(L, bits)) return false; |
| 3554 | scratch = GetRtAsRegisterHelper(rt, scratch); |
| 3555 | offset = GetOffset(offset, L, bits); |
| 3556 | blezalc(scratch, offset); |
| 3557 | } else if (IsZero(rt)) { |
| 3558 | if (!is_near(L, bits)) return false; |
| 3559 | offset = GetOffset(offset, L, bits); |
| 3560 | bgezalc(rs, offset); |
| 3561 | } else { |
| 3562 | if (!is_near(L, bits)) return false; |
| 3563 | Slt(scratch, rs, rt); |
| 3564 | offset = GetOffset(offset, L, bits); |
| 3565 | beqzalc(scratch, offset); |
| 3566 | } |
| 3567 | break; |
| 3568 | case less: |
| 3569 | // rs < rt |
| 3570 | if (rs.code() == rt.rm_.reg_code) { |
| 3571 | break; // No code needs to be emitted. |
| 3572 | } else if (rs.is(zero_reg)) { |
| 3573 | if (!is_near(L, bits)) return false; |
| 3574 | scratch = GetRtAsRegisterHelper(rt, scratch); |
| 3575 | offset = GetOffset(offset, L, bits); |
| 3576 | bgtzalc(scratch, offset); |
| 3577 | } else if (IsZero(rt)) { |
| 3578 | if (!is_near(L, bits)) return false; |
| 3579 | offset = GetOffset(offset, L, bits); |
| 3580 | bltzalc(rs, offset); |
| 3581 | } else { |
| 3582 | if (!is_near(L, bits)) return false; |
| 3583 | Slt(scratch, rs, rt); |
| 3584 | offset = GetOffset(offset, L, bits); |
| 3585 | bnezalc(scratch, offset); |
| 3586 | } |
| 3587 | break; |
| 3588 | case less_equal: |
| 3589 | // rs <= r2 |
| 3590 | if (rs.code() == rt.rm_.reg_code) { |
| 3591 | bits = OffsetSize::kOffset26; |
| 3592 | if (!is_near(L, bits)) return false; |
| 3593 | offset = GetOffset(offset, L, bits); |
| 3594 | balc(offset); |
| 3595 | } else if (rs.is(zero_reg)) { |
| 3596 | if (!is_near(L, bits)) return false; |
| 3597 | scratch = GetRtAsRegisterHelper(rt, scratch); |
| 3598 | offset = GetOffset(offset, L, bits); |
| 3599 | bgezalc(scratch, offset); |
| 3600 | } else if (IsZero(rt)) { |
| 3601 | if (!is_near(L, bits)) return false; |
| 3602 | offset = GetOffset(offset, L, bits); |
| 3603 | blezalc(rs, offset); |
| 3604 | } else { |
| 3605 | if (!is_near(L, bits)) return false; |
| 3606 | Slt(scratch, GetRtAsRegisterHelper(rt, scratch), rs); |
| 3607 | offset = GetOffset(offset, L, bits); |
| 3608 | beqzalc(scratch, offset); |
| 3609 | } |
| 3610 | break; |
| 3611 | |
| 3612 | |
| 3613 | // Unsigned comparison. |
| 3614 | case Ugreater: |
| 3615 | // rs > r2 |
| 3616 | if (!is_near(L, bits)) return false; |
| 3617 | Sltu(scratch, GetRtAsRegisterHelper(rt, scratch), rs); |
| 3618 | offset = GetOffset(offset, L, bits); |
| 3619 | bnezalc(scratch, offset); |
| 3620 | break; |
| 3621 | case Ugreater_equal: |
| 3622 | // rs >= r2 |
| 3623 | if (!is_near(L, bits)) return false; |
| 3624 | Sltu(scratch, rs, rt); |
| 3625 | offset = GetOffset(offset, L, bits); |
| 3626 | beqzalc(scratch, offset); |
| 3627 | break; |
| 3628 | case Uless: |
| 3629 | // rs < r2 |
| 3630 | if (!is_near(L, bits)) return false; |
| 3631 | Sltu(scratch, rs, rt); |
| 3632 | offset = GetOffset(offset, L, bits); |
| 3633 | bnezalc(scratch, offset); |
| 3634 | break; |
| 3635 | case Uless_equal: |
| 3636 | // rs <= r2 |
| 3637 | if (!is_near(L, bits)) return false; |
| 3638 | Sltu(scratch, GetRtAsRegisterHelper(rt, scratch), rs); |
| 3639 | offset = GetOffset(offset, L, bits); |
| 3640 | beqzalc(scratch, offset); |
| 3641 | break; |
| 3642 | default: |
| 3643 | UNREACHABLE(); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3644 | } |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3645 | return true; |
| 3646 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3647 | |
| 3648 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3649 | // Pre r6 we need to use a bgezal or bltzal, but they can't be used directly |
| 3650 | // with the slt instructions. We could use sub or add instead but we would miss |
| 3651 | // overflow cases, so we keep slt and add an intermediate third instruction. |
| 3652 | bool MacroAssembler::BranchAndLinkShortHelper(int16_t offset, Label* L, |
| 3653 | Condition cond, Register rs, |
| 3654 | const Operand& rt, |
| 3655 | BranchDelaySlot bdslot) { |
| 3656 | DCHECK(L == nullptr || offset == 0); |
| 3657 | if (!is_near(L, OffsetSize::kOffset16)) return false; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3658 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3659 | Register scratch = t8; |
| 3660 | BlockTrampolinePoolScope block_trampoline_pool(this); |
| 3661 | |
| 3662 | switch (cond) { |
| 3663 | case cc_always: |
| 3664 | offset = GetOffset(offset, L, OffsetSize::kOffset16); |
| 3665 | bal(offset); |
| 3666 | break; |
| 3667 | case eq: |
| 3668 | bne(rs, GetRtAsRegisterHelper(rt, scratch), 2); |
| 3669 | nop(); |
| 3670 | offset = GetOffset(offset, L, OffsetSize::kOffset16); |
| 3671 | bal(offset); |
| 3672 | break; |
| 3673 | case ne: |
| 3674 | beq(rs, GetRtAsRegisterHelper(rt, scratch), 2); |
| 3675 | nop(); |
| 3676 | offset = GetOffset(offset, L, OffsetSize::kOffset16); |
| 3677 | bal(offset); |
| 3678 | break; |
| 3679 | |
| 3680 | // Signed comparison. |
| 3681 | case greater: |
| 3682 | Slt(scratch, GetRtAsRegisterHelper(rt, scratch), rs); |
| 3683 | addiu(scratch, scratch, -1); |
| 3684 | offset = GetOffset(offset, L, OffsetSize::kOffset16); |
| 3685 | bgezal(scratch, offset); |
| 3686 | break; |
| 3687 | case greater_equal: |
| 3688 | Slt(scratch, rs, rt); |
| 3689 | addiu(scratch, scratch, -1); |
| 3690 | offset = GetOffset(offset, L, OffsetSize::kOffset16); |
| 3691 | bltzal(scratch, offset); |
| 3692 | break; |
| 3693 | case less: |
| 3694 | Slt(scratch, rs, rt); |
| 3695 | addiu(scratch, scratch, -1); |
| 3696 | offset = GetOffset(offset, L, OffsetSize::kOffset16); |
| 3697 | bgezal(scratch, offset); |
| 3698 | break; |
| 3699 | case less_equal: |
| 3700 | Slt(scratch, GetRtAsRegisterHelper(rt, scratch), rs); |
| 3701 | addiu(scratch, scratch, -1); |
| 3702 | offset = GetOffset(offset, L, OffsetSize::kOffset16); |
| 3703 | bltzal(scratch, offset); |
| 3704 | break; |
| 3705 | |
| 3706 | // Unsigned comparison. |
| 3707 | case Ugreater: |
| 3708 | Sltu(scratch, GetRtAsRegisterHelper(rt, scratch), rs); |
| 3709 | addiu(scratch, scratch, -1); |
| 3710 | offset = GetOffset(offset, L, OffsetSize::kOffset16); |
| 3711 | bgezal(scratch, offset); |
| 3712 | break; |
| 3713 | case Ugreater_equal: |
| 3714 | Sltu(scratch, rs, rt); |
| 3715 | addiu(scratch, scratch, -1); |
| 3716 | offset = GetOffset(offset, L, OffsetSize::kOffset16); |
| 3717 | bltzal(scratch, offset); |
| 3718 | break; |
| 3719 | case Uless: |
| 3720 | Sltu(scratch, rs, rt); |
| 3721 | addiu(scratch, scratch, -1); |
| 3722 | offset = GetOffset(offset, L, OffsetSize::kOffset16); |
| 3723 | bgezal(scratch, offset); |
| 3724 | break; |
| 3725 | case Uless_equal: |
| 3726 | Sltu(scratch, GetRtAsRegisterHelper(rt, scratch), rs); |
| 3727 | addiu(scratch, scratch, -1); |
| 3728 | offset = GetOffset(offset, L, OffsetSize::kOffset16); |
| 3729 | bltzal(scratch, offset); |
| 3730 | break; |
| 3731 | |
| 3732 | default: |
| 3733 | UNREACHABLE(); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3734 | } |
| 3735 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3736 | // Emit a nop in the branch delay slot if required. |
| 3737 | if (bdslot == PROTECT) |
| 3738 | nop(); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3739 | |
| 3740 | return true; |
| 3741 | } |
| 3742 | |
| 3743 | |
| 3744 | bool MacroAssembler::BranchAndLinkShortCheck(int32_t offset, Label* L, |
| 3745 | Condition cond, Register rs, |
| 3746 | const Operand& rt, |
| 3747 | BranchDelaySlot bdslot) { |
| 3748 | BRANCH_ARGS_CHECK(cond, rs, rt); |
| 3749 | |
| 3750 | if (!L) { |
| 3751 | if (IsMipsArchVariant(kMips32r6) && bdslot == PROTECT) { |
| 3752 | DCHECK(is_int26(offset)); |
| 3753 | return BranchAndLinkShortHelperR6(offset, nullptr, cond, rs, rt); |
| 3754 | } else { |
| 3755 | DCHECK(is_int16(offset)); |
| 3756 | return BranchAndLinkShortHelper(offset, nullptr, cond, rs, rt, bdslot); |
| 3757 | } |
| 3758 | } else { |
| 3759 | DCHECK(offset == 0); |
| 3760 | if (IsMipsArchVariant(kMips32r6) && bdslot == PROTECT) { |
| 3761 | return BranchAndLinkShortHelperR6(0, L, cond, rs, rt); |
| 3762 | } else { |
| 3763 | return BranchAndLinkShortHelper(0, L, cond, rs, rt, bdslot); |
| 3764 | } |
| 3765 | } |
| 3766 | return false; |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3767 | } |
| 3768 | |
| 3769 | |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 3770 | void MacroAssembler::Jump(Register target, |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3771 | Condition cond, |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 3772 | Register rs, |
| 3773 | const Operand& rt, |
| 3774 | BranchDelaySlot bd) { |
| 3775 | BlockTrampolinePoolScope block_trampoline_pool(this); |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 3776 | if (IsMipsArchVariant(kMips32r6) && bd == PROTECT) { |
| 3777 | if (cond == cc_always) { |
| 3778 | jic(target, 0); |
| 3779 | } else { |
| 3780 | BRANCH_ARGS_CHECK(cond, rs, rt); |
| 3781 | Branch(2, NegateCondition(cond), rs, rt); |
| 3782 | jic(target, 0); |
| 3783 | } |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 3784 | } else { |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 3785 | if (cond == cc_always) { |
| 3786 | jr(target); |
| 3787 | } else { |
| 3788 | BRANCH_ARGS_CHECK(cond, rs, rt); |
| 3789 | Branch(2, NegateCondition(cond), rs, rt); |
| 3790 | jr(target); |
| 3791 | } |
| 3792 | // Emit a nop in the branch delay slot if required. |
| 3793 | if (bd == PROTECT) nop(); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 3794 | } |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 3795 | } |
| 3796 | |
| 3797 | |
| 3798 | void MacroAssembler::Jump(intptr_t target, |
| 3799 | RelocInfo::Mode rmode, |
| 3800 | Condition cond, |
| 3801 | Register rs, |
| 3802 | const Operand& rt, |
| 3803 | BranchDelaySlot bd) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3804 | Label skip; |
| 3805 | if (cond != cc_always) { |
| 3806 | Branch(USE_DELAY_SLOT, &skip, NegateCondition(cond), rs, rt); |
| 3807 | } |
| 3808 | // The first instruction of 'li' may be placed in the delay slot. |
| 3809 | // This is not an issue, t9 is expected to be clobbered anyway. |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 3810 | li(t9, Operand(target, rmode)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3811 | Jump(t9, al, zero_reg, Operand(zero_reg), bd); |
| 3812 | bind(&skip); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 3813 | } |
| 3814 | |
| 3815 | |
| 3816 | void MacroAssembler::Jump(Address target, |
| 3817 | RelocInfo::Mode rmode, |
| 3818 | Condition cond, |
| 3819 | Register rs, |
| 3820 | const Operand& rt, |
| 3821 | BranchDelaySlot bd) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3822 | DCHECK(!RelocInfo::IsCodeTarget(rmode)); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 3823 | Jump(reinterpret_cast<intptr_t>(target), rmode, cond, rs, rt, bd); |
| 3824 | } |
| 3825 | |
| 3826 | |
| 3827 | void MacroAssembler::Jump(Handle<Code> code, |
| 3828 | RelocInfo::Mode rmode, |
| 3829 | Condition cond, |
| 3830 | Register rs, |
| 3831 | const Operand& rt, |
| 3832 | BranchDelaySlot bd) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3833 | DCHECK(RelocInfo::IsCodeTarget(rmode)); |
| 3834 | AllowDeferredHandleDereference embedding_raw_address; |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 3835 | Jump(reinterpret_cast<intptr_t>(code.location()), rmode, cond, rs, rt, bd); |
| 3836 | } |
| 3837 | |
| 3838 | |
| 3839 | int MacroAssembler::CallSize(Register target, |
| 3840 | Condition cond, |
| 3841 | Register rs, |
| 3842 | const Operand& rt, |
| 3843 | BranchDelaySlot bd) { |
| 3844 | int size = 0; |
| 3845 | |
| 3846 | if (cond == cc_always) { |
| 3847 | size += 1; |
| 3848 | } else { |
| 3849 | size += 3; |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3850 | } |
| 3851 | |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 3852 | if (bd == PROTECT && !IsMipsArchVariant(kMips32r6)) size += 1; |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3853 | |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 3854 | return size * kInstrSize; |
| 3855 | } |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3856 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3857 | |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 3858 | // Note: To call gcc-compiled C code on mips, you must call thru t9. |
| 3859 | void MacroAssembler::Call(Register target, |
| 3860 | Condition cond, |
| 3861 | Register rs, |
| 3862 | const Operand& rt, |
| 3863 | BranchDelaySlot bd) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3864 | #ifdef DEBUG |
| 3865 | int size = IsPrevInstrCompactBranch() ? kInstrSize : 0; |
| 3866 | #endif |
| 3867 | |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 3868 | BlockTrampolinePoolScope block_trampoline_pool(this); |
| 3869 | Label start; |
| 3870 | bind(&start); |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 3871 | if (IsMipsArchVariant(kMips32r6) && bd == PROTECT) { |
| 3872 | if (cond == cc_always) { |
| 3873 | jialc(target, 0); |
| 3874 | } else { |
| 3875 | BRANCH_ARGS_CHECK(cond, rs, rt); |
| 3876 | Branch(2, NegateCondition(cond), rs, rt); |
| 3877 | jialc(target, 0); |
| 3878 | } |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 3879 | } else { |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 3880 | if (cond == cc_always) { |
| 3881 | jalr(target); |
| 3882 | } else { |
| 3883 | BRANCH_ARGS_CHECK(cond, rs, rt); |
| 3884 | Branch(2, NegateCondition(cond), rs, rt); |
| 3885 | jalr(target); |
| 3886 | } |
| 3887 | // Emit a nop in the branch delay slot if required. |
| 3888 | if (bd == PROTECT) nop(); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3889 | } |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 3890 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3891 | #ifdef DEBUG |
| 3892 | CHECK_EQ(size + CallSize(target, cond, rs, rt, bd), |
| 3893 | SizeOfCodeGeneratedSince(&start)); |
| 3894 | #endif |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 3895 | } |
| 3896 | |
| 3897 | |
| 3898 | int MacroAssembler::CallSize(Address target, |
| 3899 | RelocInfo::Mode rmode, |
| 3900 | Condition cond, |
| 3901 | Register rs, |
| 3902 | const Operand& rt, |
| 3903 | BranchDelaySlot bd) { |
| 3904 | int size = CallSize(t9, cond, rs, rt, bd); |
| 3905 | return size + 2 * kInstrSize; |
| 3906 | } |
| 3907 | |
| 3908 | |
| 3909 | void MacroAssembler::Call(Address target, |
| 3910 | RelocInfo::Mode rmode, |
| 3911 | Condition cond, |
| 3912 | Register rs, |
| 3913 | const Operand& rt, |
| 3914 | BranchDelaySlot bd) { |
| 3915 | BlockTrampolinePoolScope block_trampoline_pool(this); |
| 3916 | Label start; |
| 3917 | bind(&start); |
| 3918 | int32_t target_int = reinterpret_cast<int32_t>(target); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3919 | li(t9, Operand(target_int, rmode), CONSTANT_SIZE); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 3920 | Call(t9, cond, rs, rt, bd); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3921 | DCHECK_EQ(CallSize(target, rmode, cond, rs, rt, bd), |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 3922 | SizeOfCodeGeneratedSince(&start)); |
| 3923 | } |
| 3924 | |
| 3925 | |
| 3926 | int MacroAssembler::CallSize(Handle<Code> code, |
| 3927 | RelocInfo::Mode rmode, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3928 | TypeFeedbackId ast_id, |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 3929 | Condition cond, |
| 3930 | Register rs, |
| 3931 | const Operand& rt, |
| 3932 | BranchDelaySlot bd) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3933 | AllowDeferredHandleDereference using_raw_address; |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 3934 | return CallSize(reinterpret_cast<Address>(code.location()), |
| 3935 | rmode, cond, rs, rt, bd); |
| 3936 | } |
| 3937 | |
| 3938 | |
| 3939 | void MacroAssembler::Call(Handle<Code> code, |
| 3940 | RelocInfo::Mode rmode, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3941 | TypeFeedbackId ast_id, |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 3942 | Condition cond, |
| 3943 | Register rs, |
| 3944 | const Operand& rt, |
| 3945 | BranchDelaySlot bd) { |
| 3946 | BlockTrampolinePoolScope block_trampoline_pool(this); |
| 3947 | Label start; |
| 3948 | bind(&start); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3949 | DCHECK(RelocInfo::IsCodeTarget(rmode)); |
| 3950 | if (rmode == RelocInfo::CODE_TARGET && !ast_id.IsNone()) { |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 3951 | SetRecordedAstId(ast_id); |
| 3952 | rmode = RelocInfo::CODE_TARGET_WITH_ID; |
| 3953 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3954 | AllowDeferredHandleDereference embedding_raw_address; |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 3955 | Call(reinterpret_cast<Address>(code.location()), rmode, cond, rs, rt, bd); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3956 | DCHECK_EQ(CallSize(code, rmode, ast_id, cond, rs, rt, bd), |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 3957 | SizeOfCodeGeneratedSince(&start)); |
| 3958 | } |
| 3959 | |
| 3960 | |
| 3961 | void MacroAssembler::Ret(Condition cond, |
| 3962 | Register rs, |
| 3963 | const Operand& rt, |
| 3964 | BranchDelaySlot bd) { |
| 3965 | Jump(ra, cond, rs, rt, bd); |
| 3966 | } |
| 3967 | |
| 3968 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3969 | void MacroAssembler::BranchLong(Label* L, BranchDelaySlot bdslot) { |
| 3970 | if (IsMipsArchVariant(kMips32r6) && bdslot == PROTECT && |
| 3971 | (!L->is_bound() || is_near_r6(L))) { |
| 3972 | BranchShortHelperR6(0, L); |
| 3973 | } else { |
| 3974 | BlockTrampolinePoolScope block_trampoline_pool(this); |
| 3975 | uint32_t imm32; |
| 3976 | imm32 = jump_address(L); |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 3977 | if (IsMipsArchVariant(kMips32r6) && bdslot == PROTECT) { |
| 3978 | uint32_t lui_offset, jic_offset; |
| 3979 | UnpackTargetAddressUnsigned(imm32, lui_offset, jic_offset); |
| 3980 | { |
| 3981 | BlockGrowBufferScope block_buf_growth(this); |
| 3982 | // Buffer growth (and relocation) must be blocked for internal |
| 3983 | // references until associated instructions are emitted and |
| 3984 | // available to be patched. |
| 3985 | RecordRelocInfo(RelocInfo::INTERNAL_REFERENCE_ENCODED); |
| 3986 | lui(at, lui_offset); |
| 3987 | jic(at, jic_offset); |
| 3988 | } |
| 3989 | CheckBuffer(); |
| 3990 | } else { |
| 3991 | { |
| 3992 | BlockGrowBufferScope block_buf_growth(this); |
| 3993 | // Buffer growth (and relocation) must be blocked for internal |
| 3994 | // references |
| 3995 | // until associated instructions are emitted and available to be |
| 3996 | // patched. |
| 3997 | RecordRelocInfo(RelocInfo::INTERNAL_REFERENCE_ENCODED); |
| 3998 | lui(at, (imm32 & kHiMask) >> kLuiShift); |
| 3999 | ori(at, at, (imm32 & kImm16Mask)); |
| 4000 | } |
| 4001 | CheckBuffer(); |
| 4002 | jr(at); |
| 4003 | // Emit a nop in the branch delay slot if required. |
| 4004 | if (bdslot == PROTECT) nop(); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4005 | } |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 4006 | } |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 4007 | } |
| 4008 | |
| 4009 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4010 | void MacroAssembler::BranchAndLinkLong(Label* L, BranchDelaySlot bdslot) { |
| 4011 | if (IsMipsArchVariant(kMips32r6) && bdslot == PROTECT && |
| 4012 | (!L->is_bound() || is_near_r6(L))) { |
| 4013 | BranchAndLinkShortHelperR6(0, L); |
| 4014 | } else { |
| 4015 | BlockTrampolinePoolScope block_trampoline_pool(this); |
| 4016 | uint32_t imm32; |
| 4017 | imm32 = jump_address(L); |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 4018 | if (IsMipsArchVariant(kMips32r6) && bdslot == PROTECT) { |
| 4019 | uint32_t lui_offset, jic_offset; |
| 4020 | UnpackTargetAddressUnsigned(imm32, lui_offset, jic_offset); |
| 4021 | { |
| 4022 | BlockGrowBufferScope block_buf_growth(this); |
| 4023 | // Buffer growth (and relocation) must be blocked for internal |
| 4024 | // references until associated instructions are emitted and |
| 4025 | // available to be patched. |
| 4026 | RecordRelocInfo(RelocInfo::INTERNAL_REFERENCE_ENCODED); |
| 4027 | lui(at, lui_offset); |
| 4028 | jialc(at, jic_offset); |
| 4029 | } |
| 4030 | CheckBuffer(); |
| 4031 | } else { |
| 4032 | { |
| 4033 | BlockGrowBufferScope block_buf_growth(this); |
| 4034 | // Buffer growth (and relocation) must be blocked for internal |
| 4035 | // references |
| 4036 | // until associated instructions are emitted and available to be |
| 4037 | // patched. |
| 4038 | RecordRelocInfo(RelocInfo::INTERNAL_REFERENCE_ENCODED); |
| 4039 | lui(at, (imm32 & kHiMask) >> kLuiShift); |
| 4040 | ori(at, at, (imm32 & kImm16Mask)); |
| 4041 | } |
| 4042 | CheckBuffer(); |
| 4043 | jalr(at); |
| 4044 | // Emit a nop in the branch delay slot if required. |
| 4045 | if (bdslot == PROTECT) nop(); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4046 | } |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 4047 | } |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4048 | } |
| 4049 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4050 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4051 | void MacroAssembler::DropAndRet(int drop) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4052 | DCHECK(is_int16(drop * kPointerSize)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4053 | Ret(USE_DELAY_SLOT); |
| 4054 | addiu(sp, sp, drop * kPointerSize); |
| 4055 | } |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4056 | |
| 4057 | void MacroAssembler::DropAndRet(int drop, |
| 4058 | Condition cond, |
| 4059 | Register r1, |
| 4060 | const Operand& r2) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4061 | // Both Drop and Ret need to be conditional. |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4062 | Label skip; |
| 4063 | if (cond != cc_always) { |
| 4064 | Branch(&skip, NegateCondition(cond), r1, r2); |
| 4065 | } |
| 4066 | |
| 4067 | Drop(drop); |
| 4068 | Ret(); |
| 4069 | |
| 4070 | if (cond != cc_always) { |
| 4071 | bind(&skip); |
| 4072 | } |
| 4073 | } |
| 4074 | |
| 4075 | |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 4076 | void MacroAssembler::Drop(int count, |
| 4077 | Condition cond, |
| 4078 | Register reg, |
| 4079 | const Operand& op) { |
| 4080 | if (count <= 0) { |
| 4081 | return; |
| 4082 | } |
| 4083 | |
| 4084 | Label skip; |
| 4085 | |
| 4086 | if (cond != al) { |
| 4087 | Branch(&skip, NegateCondition(cond), reg, op); |
| 4088 | } |
| 4089 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4090 | Addu(sp, sp, Operand(count * kPointerSize)); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 4091 | |
| 4092 | if (cond != al) { |
| 4093 | bind(&skip); |
| 4094 | } |
| 4095 | } |
| 4096 | |
| 4097 | |
| 4098 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4099 | void MacroAssembler::Swap(Register reg1, |
| 4100 | Register reg2, |
| 4101 | Register scratch) { |
| 4102 | if (scratch.is(no_reg)) { |
| 4103 | Xor(reg1, reg1, Operand(reg2)); |
| 4104 | Xor(reg2, reg2, Operand(reg1)); |
| 4105 | Xor(reg1, reg1, Operand(reg2)); |
| 4106 | } else { |
| 4107 | mov(scratch, reg1); |
| 4108 | mov(reg1, reg2); |
| 4109 | mov(reg2, scratch); |
| 4110 | } |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 4111 | } |
| 4112 | |
| 4113 | |
| 4114 | void MacroAssembler::Call(Label* target) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4115 | BranchAndLink(target); |
| 4116 | } |
| 4117 | |
| 4118 | |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 4119 | void MacroAssembler::Push(Handle<Object> handle) { |
| 4120 | li(at, Operand(handle)); |
| 4121 | push(at); |
| 4122 | } |
| 4123 | |
| 4124 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4125 | void MacroAssembler::DebugBreak() { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4126 | PrepareCEntryArgs(0); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4127 | PrepareCEntryFunction( |
| 4128 | ExternalReference(Runtime::kHandleDebuggerStatement, isolate())); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4129 | CEntryStub ces(isolate(), 1); |
| 4130 | DCHECK(AllowThisStubCall(&ces)); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4131 | Call(ces.GetCode(), RelocInfo::DEBUGGER_STATEMENT); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4132 | } |
| 4133 | |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 4134 | |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 4135 | // --------------------------------------------------------------------------- |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4136 | // Exception handling. |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 4137 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4138 | void MacroAssembler::PushStackHandler() { |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 4139 | // Adjust this code if not the case. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4140 | STATIC_ASSERT(StackHandlerConstants::kSize == 1 * kPointerSize); |
Ben Murdoch | 69a99ed | 2011-11-30 16:03:39 +0000 | [diff] [blame] | 4141 | STATIC_ASSERT(StackHandlerConstants::kNextOffset == 0 * kPointerSize); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4142 | |
| 4143 | // Link the current handler as the next handler. |
| 4144 | li(t2, Operand(ExternalReference(Isolate::kHandlerAddress, isolate()))); |
| 4145 | lw(t1, MemOperand(t2)); |
| 4146 | push(t1); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4147 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4148 | // Set this new handler as the current one. |
| 4149 | sw(sp, MemOperand(t2)); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 4150 | } |
| 4151 | |
| 4152 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4153 | void MacroAssembler::PopStackHandler() { |
Ben Murdoch | 69a99ed | 2011-11-30 16:03:39 +0000 | [diff] [blame] | 4154 | STATIC_ASSERT(StackHandlerConstants::kNextOffset == 0); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4155 | pop(a1); |
| 4156 | Addu(sp, sp, Operand(StackHandlerConstants::kSize - kPointerSize)); |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 4157 | li(at, Operand(ExternalReference(Isolate::kHandlerAddress, isolate()))); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4158 | sw(a1, MemOperand(at)); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 4159 | } |
| 4160 | |
| 4161 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4162 | void MacroAssembler::Allocate(int object_size, |
| 4163 | Register result, |
| 4164 | Register scratch1, |
| 4165 | Register scratch2, |
| 4166 | Label* gc_required, |
| 4167 | AllocationFlags flags) { |
| 4168 | DCHECK(object_size <= Page::kMaxRegularHeapObjectSize); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 4169 | DCHECK((flags & ALLOCATION_FOLDED) == 0); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4170 | if (!FLAG_inline_new) { |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4171 | if (emit_debug_code()) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4172 | // Trash the registers to simulate an allocation failure. |
| 4173 | li(result, 0x7091); |
| 4174 | li(scratch1, 0x7191); |
| 4175 | li(scratch2, 0x7291); |
| 4176 | } |
| 4177 | jmp(gc_required); |
| 4178 | return; |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 4179 | } |
| 4180 | |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 4181 | DCHECK(!AreAliased(result, scratch1, scratch2, t9, at)); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 4182 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4183 | // Make object size into bytes. |
| 4184 | if ((flags & SIZE_IN_WORDS) != 0) { |
| 4185 | object_size *= kPointerSize; |
| 4186 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4187 | DCHECK_EQ(0, object_size & kObjectAlignmentMask); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 4188 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4189 | // Check relative positions of allocation top and limit addresses. |
| 4190 | // ARM adds additional checks to make sure the ldm instruction can be |
| 4191 | // used. On MIPS we don't have ldm so we don't need additional checks either. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4192 | ExternalReference allocation_top = |
| 4193 | AllocationUtils::GetAllocationTopReference(isolate(), flags); |
| 4194 | ExternalReference allocation_limit = |
| 4195 | AllocationUtils::GetAllocationLimitReference(isolate(), flags); |
| 4196 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4197 | intptr_t top = reinterpret_cast<intptr_t>(allocation_top.address()); |
| 4198 | intptr_t limit = reinterpret_cast<intptr_t>(allocation_limit.address()); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4199 | DCHECK((limit - top) == kPointerSize); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4200 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4201 | // Set up allocation top address and allocation limit registers. |
| 4202 | Register top_address = scratch1; |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4203 | // This code stores a temporary value in t9. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4204 | Register alloc_limit = t9; |
| 4205 | Register result_end = scratch2; |
| 4206 | li(top_address, Operand(allocation_top)); |
| 4207 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4208 | if ((flags & RESULT_CONTAINS_TOP) == 0) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4209 | // Load allocation top into result and allocation limit into alloc_limit. |
| 4210 | lw(result, MemOperand(top_address)); |
| 4211 | lw(alloc_limit, MemOperand(top_address, kPointerSize)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4212 | } else { |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4213 | if (emit_debug_code()) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4214 | // Assert that result actually contains top on entry. |
| 4215 | lw(alloc_limit, MemOperand(top_address)); |
| 4216 | Check(eq, kUnexpectedAllocationTop, result, Operand(alloc_limit)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4217 | } |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4218 | // Load allocation limit. Result already contains allocation top. |
| 4219 | lw(alloc_limit, MemOperand(top_address, limit - top)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4220 | } |
| 4221 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4222 | if ((flags & DOUBLE_ALIGNMENT) != 0) { |
| 4223 | // Align the next allocation. Storing the filler map without checking top is |
| 4224 | // safe in new-space because the limit of the heap is aligned there. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4225 | DCHECK(kPointerAlignment * 2 == kDoubleAlignment); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4226 | And(result_end, result, Operand(kDoubleAlignmentMask)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4227 | Label aligned; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4228 | Branch(&aligned, eq, result_end, Operand(zero_reg)); |
| 4229 | if ((flags & PRETENURE) != 0) { |
| 4230 | Branch(gc_required, Ugreater_equal, result, Operand(alloc_limit)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4231 | } |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4232 | li(result_end, Operand(isolate()->factory()->one_pointer_filler_map())); |
| 4233 | sw(result_end, MemOperand(result)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4234 | Addu(result, result, Operand(kDoubleSize / 2)); |
| 4235 | bind(&aligned); |
| 4236 | } |
| 4237 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4238 | // Calculate new top and bail out if new space is exhausted. Use result |
| 4239 | // to calculate the new top. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4240 | Addu(result_end, result, Operand(object_size)); |
| 4241 | Branch(gc_required, Ugreater, result_end, Operand(alloc_limit)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4242 | |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 4243 | if ((flags & ALLOCATION_FOLDING_DOMINATOR) == 0) { |
| 4244 | // The top pointer is not updated for allocation folding dominators. |
| 4245 | sw(result_end, MemOperand(top_address)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4246 | } |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 4247 | |
| 4248 | // Tag object. |
| 4249 | Addu(result, result, Operand(kHeapObjectTag)); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 4250 | } |
| 4251 | |
| 4252 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4253 | void MacroAssembler::Allocate(Register object_size, Register result, |
| 4254 | Register result_end, Register scratch, |
| 4255 | Label* gc_required, AllocationFlags flags) { |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 4256 | DCHECK((flags & ALLOCATION_FOLDED) == 0); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4257 | if (!FLAG_inline_new) { |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4258 | if (emit_debug_code()) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4259 | // Trash the registers to simulate an allocation failure. |
| 4260 | li(result, 0x7091); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4261 | li(scratch, 0x7191); |
| 4262 | li(result_end, 0x7291); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4263 | } |
| 4264 | jmp(gc_required); |
| 4265 | return; |
| 4266 | } |
| 4267 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4268 | // |object_size| and |result_end| may overlap if the DOUBLE_ALIGNMENT flag |
| 4269 | // is not specified. Other registers must not overlap. |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 4270 | DCHECK(!AreAliased(object_size, result, scratch, t9, at)); |
| 4271 | DCHECK(!AreAliased(result_end, result, scratch, t9, at)); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4272 | DCHECK((flags & DOUBLE_ALIGNMENT) == 0 || !object_size.is(result_end)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4273 | |
| 4274 | // Check relative positions of allocation top and limit addresses. |
| 4275 | // ARM adds additional checks to make sure the ldm instruction can be |
| 4276 | // used. On MIPS we don't have ldm so we don't need additional checks either. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4277 | ExternalReference allocation_top = |
| 4278 | AllocationUtils::GetAllocationTopReference(isolate(), flags); |
| 4279 | ExternalReference allocation_limit = |
| 4280 | AllocationUtils::GetAllocationLimitReference(isolate(), flags); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4281 | intptr_t top = reinterpret_cast<intptr_t>(allocation_top.address()); |
| 4282 | intptr_t limit = reinterpret_cast<intptr_t>(allocation_limit.address()); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4283 | DCHECK((limit - top) == kPointerSize); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4284 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4285 | // Set up allocation top address and allocation limit registers. |
| 4286 | Register top_address = scratch; |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4287 | // This code stores a temporary value in t9. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4288 | Register alloc_limit = t9; |
| 4289 | li(top_address, Operand(allocation_top)); |
| 4290 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4291 | if ((flags & RESULT_CONTAINS_TOP) == 0) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4292 | // Load allocation top into result and allocation limit into alloc_limit. |
| 4293 | lw(result, MemOperand(top_address)); |
| 4294 | lw(alloc_limit, MemOperand(top_address, kPointerSize)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4295 | } else { |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4296 | if (emit_debug_code()) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4297 | // Assert that result actually contains top on entry. |
| 4298 | lw(alloc_limit, MemOperand(top_address)); |
| 4299 | Check(eq, kUnexpectedAllocationTop, result, Operand(alloc_limit)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4300 | } |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4301 | // Load allocation limit. Result already contains allocation top. |
| 4302 | lw(alloc_limit, MemOperand(top_address, limit - top)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4303 | } |
| 4304 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4305 | if ((flags & DOUBLE_ALIGNMENT) != 0) { |
| 4306 | // Align the next allocation. Storing the filler map without checking top is |
| 4307 | // safe in new-space because the limit of the heap is aligned there. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4308 | DCHECK(kPointerAlignment * 2 == kDoubleAlignment); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4309 | And(result_end, result, Operand(kDoubleAlignmentMask)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4310 | Label aligned; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4311 | Branch(&aligned, eq, result_end, Operand(zero_reg)); |
| 4312 | if ((flags & PRETENURE) != 0) { |
| 4313 | Branch(gc_required, Ugreater_equal, result, Operand(alloc_limit)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4314 | } |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4315 | li(result_end, Operand(isolate()->factory()->one_pointer_filler_map())); |
| 4316 | sw(result_end, MemOperand(result)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4317 | Addu(result, result, Operand(kDoubleSize / 2)); |
| 4318 | bind(&aligned); |
| 4319 | } |
| 4320 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4321 | // Calculate new top and bail out if new space is exhausted. Use result |
| 4322 | // to calculate the new top. Object size may be in words so a shift is |
| 4323 | // required to get the number of bytes. |
| 4324 | if ((flags & SIZE_IN_WORDS) != 0) { |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 4325 | Lsa(result_end, result, object_size, kPointerSizeLog2); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4326 | } else { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4327 | Addu(result_end, result, Operand(object_size)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4328 | } |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 4329 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4330 | Branch(gc_required, Ugreater, result_end, Operand(alloc_limit)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4331 | |
| 4332 | // Update allocation top. result temporarily holds the new top. |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4333 | if (emit_debug_code()) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4334 | And(alloc_limit, result_end, Operand(kObjectAlignmentMask)); |
| 4335 | Check(eq, kUnalignedAllocationInNewSpace, alloc_limit, Operand(zero_reg)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4336 | } |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4337 | |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 4338 | if ((flags & ALLOCATION_FOLDING_DOMINATOR) == 0) { |
| 4339 | // The top pointer is not updated for allocation folding dominators. |
| 4340 | sw(result_end, MemOperand(top_address)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4341 | } |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 4342 | |
| 4343 | // Tag object. |
| 4344 | Addu(result, result, Operand(kHeapObjectTag)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4345 | } |
| 4346 | |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 4347 | void MacroAssembler::FastAllocate(int object_size, Register result, |
| 4348 | Register scratch1, Register scratch2, |
| 4349 | AllocationFlags flags) { |
| 4350 | DCHECK(object_size <= Page::kMaxRegularHeapObjectSize); |
| 4351 | DCHECK(!AreAliased(result, scratch1, scratch2, t9, at)); |
| 4352 | |
| 4353 | // Make object size into bytes. |
| 4354 | if ((flags & SIZE_IN_WORDS) != 0) { |
| 4355 | object_size *= kPointerSize; |
| 4356 | } |
| 4357 | DCHECK_EQ(0, object_size & kObjectAlignmentMask); |
| 4358 | |
| 4359 | ExternalReference allocation_top = |
| 4360 | AllocationUtils::GetAllocationTopReference(isolate(), flags); |
| 4361 | |
| 4362 | // Set up allocation top address and allocation limit registers. |
| 4363 | Register top_address = scratch1; |
| 4364 | // This code stores a temporary value in t9. |
| 4365 | Register result_end = scratch2; |
| 4366 | li(top_address, Operand(allocation_top)); |
| 4367 | lw(result, MemOperand(top_address)); |
| 4368 | |
| 4369 | if ((flags & DOUBLE_ALIGNMENT) != 0) { |
| 4370 | // Align the next allocation. Storing the filler map without checking top is |
| 4371 | // safe in new-space because the limit of the heap is aligned there. |
| 4372 | DCHECK(kPointerAlignment * 2 == kDoubleAlignment); |
| 4373 | And(result_end, result, Operand(kDoubleAlignmentMask)); |
| 4374 | Label aligned; |
| 4375 | Branch(&aligned, eq, result_end, Operand(zero_reg)); |
| 4376 | li(result_end, Operand(isolate()->factory()->one_pointer_filler_map())); |
| 4377 | sw(result_end, MemOperand(result)); |
| 4378 | Addu(result, result, Operand(kDoubleSize / 2)); |
| 4379 | bind(&aligned); |
| 4380 | } |
| 4381 | |
| 4382 | Addu(result_end, result, Operand(object_size)); |
| 4383 | |
| 4384 | // The top pointer is not updated for allocation folding dominators. |
| 4385 | sw(result_end, MemOperand(top_address)); |
| 4386 | |
| 4387 | Addu(result, result, Operand(kHeapObjectTag)); |
| 4388 | } |
| 4389 | |
| 4390 | void MacroAssembler::FastAllocate(Register object_size, Register result, |
| 4391 | Register result_end, Register scratch, |
| 4392 | AllocationFlags flags) { |
| 4393 | // |object_size| and |result_end| may overlap if the DOUBLE_ALIGNMENT flag |
| 4394 | // is not specified. Other registers must not overlap. |
| 4395 | DCHECK(!AreAliased(object_size, result, scratch, t9, at)); |
| 4396 | DCHECK(!AreAliased(result_end, result, scratch, t9, at)); |
| 4397 | DCHECK((flags & DOUBLE_ALIGNMENT) == 0 || !object_size.is(result_end)); |
| 4398 | |
| 4399 | ExternalReference allocation_top = |
| 4400 | AllocationUtils::GetAllocationTopReference(isolate(), flags); |
| 4401 | |
| 4402 | // Set up allocation top address and allocation limit registers. |
| 4403 | Register top_address = scratch; |
| 4404 | // This code stores a temporary value in t9. |
| 4405 | li(top_address, Operand(allocation_top)); |
| 4406 | lw(result, MemOperand(top_address)); |
| 4407 | |
| 4408 | if ((flags & DOUBLE_ALIGNMENT) != 0) { |
| 4409 | // Align the next allocation. Storing the filler map without checking top is |
| 4410 | // safe in new-space because the limit of the heap is aligned there. |
| 4411 | DCHECK(kPointerAlignment * 2 == kDoubleAlignment); |
| 4412 | And(result_end, result, Operand(kDoubleAlignmentMask)); |
| 4413 | Label aligned; |
| 4414 | Branch(&aligned, eq, result_end, Operand(zero_reg)); |
| 4415 | li(result_end, Operand(isolate()->factory()->one_pointer_filler_map())); |
| 4416 | sw(result_end, MemOperand(result)); |
| 4417 | Addu(result, result, Operand(kDoubleSize / 2)); |
| 4418 | bind(&aligned); |
| 4419 | } |
| 4420 | |
| 4421 | // Calculate new top and bail out if new space is exhausted. Use result |
| 4422 | // to calculate the new top. Object size may be in words so a shift is |
| 4423 | // required to get the number of bytes. |
| 4424 | if ((flags & SIZE_IN_WORDS) != 0) { |
| 4425 | Lsa(result_end, result, object_size, kPointerSizeLog2); |
| 4426 | } else { |
| 4427 | Addu(result_end, result, Operand(object_size)); |
| 4428 | } |
| 4429 | |
| 4430 | // The top pointer is not updated for allocation folding dominators. |
| 4431 | sw(result_end, MemOperand(top_address)); |
| 4432 | |
| 4433 | Addu(result, result, Operand(kHeapObjectTag)); |
| 4434 | } |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4435 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4436 | void MacroAssembler::AllocateTwoByteString(Register result, |
| 4437 | Register length, |
| 4438 | Register scratch1, |
| 4439 | Register scratch2, |
| 4440 | Register scratch3, |
| 4441 | Label* gc_required) { |
| 4442 | // Calculate the number of bytes needed for the characters in the string while |
| 4443 | // observing object alignment. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4444 | DCHECK((SeqTwoByteString::kHeaderSize & kObjectAlignmentMask) == 0); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4445 | sll(scratch1, length, 1); // Length in bytes, not chars. |
| 4446 | addiu(scratch1, scratch1, |
| 4447 | kObjectAlignmentMask + SeqTwoByteString::kHeaderSize); |
| 4448 | And(scratch1, scratch1, Operand(~kObjectAlignmentMask)); |
| 4449 | |
| 4450 | // Allocate two-byte string in new space. |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 4451 | Allocate(scratch1, result, scratch2, scratch3, gc_required, |
| 4452 | NO_ALLOCATION_FLAGS); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4453 | |
| 4454 | // Set the map, length and hash field. |
| 4455 | InitializeNewString(result, |
| 4456 | length, |
| 4457 | Heap::kStringMapRootIndex, |
| 4458 | scratch1, |
| 4459 | scratch2); |
| 4460 | } |
| 4461 | |
| 4462 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4463 | void MacroAssembler::AllocateOneByteString(Register result, Register length, |
| 4464 | Register scratch1, Register scratch2, |
| 4465 | Register scratch3, |
| 4466 | Label* gc_required) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4467 | // Calculate the number of bytes needed for the characters in the string |
| 4468 | // while observing object alignment. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4469 | DCHECK((SeqOneByteString::kHeaderSize & kObjectAlignmentMask) == 0); |
| 4470 | DCHECK(kCharSize == 1); |
| 4471 | addiu(scratch1, length, kObjectAlignmentMask + SeqOneByteString::kHeaderSize); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4472 | And(scratch1, scratch1, Operand(~kObjectAlignmentMask)); |
| 4473 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4474 | // Allocate one-byte string in new space. |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 4475 | Allocate(scratch1, result, scratch2, scratch3, gc_required, |
| 4476 | NO_ALLOCATION_FLAGS); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4477 | |
| 4478 | // Set the map, length and hash field. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4479 | InitializeNewString(result, length, Heap::kOneByteStringMapRootIndex, |
| 4480 | scratch1, scratch2); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4481 | } |
| 4482 | |
| 4483 | |
| 4484 | void MacroAssembler::AllocateTwoByteConsString(Register result, |
| 4485 | Register length, |
| 4486 | Register scratch1, |
| 4487 | Register scratch2, |
| 4488 | Label* gc_required) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4489 | Allocate(ConsString::kSize, result, scratch1, scratch2, gc_required, |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 4490 | NO_ALLOCATION_FLAGS); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4491 | InitializeNewString(result, |
| 4492 | length, |
| 4493 | Heap::kConsStringMapRootIndex, |
| 4494 | scratch1, |
| 4495 | scratch2); |
| 4496 | } |
| 4497 | |
| 4498 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4499 | void MacroAssembler::AllocateOneByteConsString(Register result, Register length, |
| 4500 | Register scratch1, |
| 4501 | Register scratch2, |
| 4502 | Label* gc_required) { |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 4503 | Allocate(ConsString::kSize, result, scratch1, scratch2, gc_required, |
| 4504 | NO_ALLOCATION_FLAGS); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4505 | |
| 4506 | InitializeNewString(result, length, Heap::kConsOneByteStringMapRootIndex, |
| 4507 | scratch1, scratch2); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4508 | } |
| 4509 | |
| 4510 | |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 4511 | void MacroAssembler::AllocateTwoByteSlicedString(Register result, |
| 4512 | Register length, |
| 4513 | Register scratch1, |
| 4514 | Register scratch2, |
| 4515 | Label* gc_required) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4516 | Allocate(SlicedString::kSize, result, scratch1, scratch2, gc_required, |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 4517 | NO_ALLOCATION_FLAGS); |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 4518 | |
| 4519 | InitializeNewString(result, |
| 4520 | length, |
| 4521 | Heap::kSlicedStringMapRootIndex, |
| 4522 | scratch1, |
| 4523 | scratch2); |
| 4524 | } |
| 4525 | |
| 4526 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4527 | void MacroAssembler::AllocateOneByteSlicedString(Register result, |
| 4528 | Register length, |
| 4529 | Register scratch1, |
| 4530 | Register scratch2, |
| 4531 | Label* gc_required) { |
| 4532 | Allocate(SlicedString::kSize, result, scratch1, scratch2, gc_required, |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 4533 | NO_ALLOCATION_FLAGS); |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 4534 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4535 | InitializeNewString(result, length, Heap::kSlicedOneByteStringMapRootIndex, |
| 4536 | scratch1, scratch2); |
| 4537 | } |
| 4538 | |
| 4539 | |
| 4540 | void MacroAssembler::JumpIfNotUniqueNameInstanceType(Register reg, |
| 4541 | Label* not_unique_name) { |
| 4542 | STATIC_ASSERT(kInternalizedTag == 0 && kStringTag == 0); |
| 4543 | Label succeed; |
| 4544 | And(at, reg, Operand(kIsNotStringMask | kIsNotInternalizedMask)); |
| 4545 | Branch(&succeed, eq, at, Operand(zero_reg)); |
| 4546 | Branch(not_unique_name, ne, reg, Operand(SYMBOL_TYPE)); |
| 4547 | |
| 4548 | bind(&succeed); |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 4549 | } |
| 4550 | |
| 4551 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4552 | // Allocates a heap number or jumps to the label if the young space is full and |
| 4553 | // a scavenge is needed. |
| 4554 | void MacroAssembler::AllocateHeapNumber(Register result, |
| 4555 | Register scratch1, |
| 4556 | Register scratch2, |
| 4557 | Register heap_number_map, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4558 | Label* need_gc, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4559 | MutableMode mode) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4560 | // Allocate an object in the heap for the heap number and tag it as a heap |
| 4561 | // object. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4562 | Allocate(HeapNumber::kSize, result, scratch1, scratch2, need_gc, |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 4563 | NO_ALLOCATION_FLAGS); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4564 | |
| 4565 | Heap::RootListIndex map_index = mode == MUTABLE |
| 4566 | ? Heap::kMutableHeapNumberMapRootIndex |
| 4567 | : Heap::kHeapNumberMapRootIndex; |
| 4568 | AssertIsRoot(heap_number_map, map_index); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4569 | |
| 4570 | // Store heap number map in the allocated object. |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 4571 | sw(heap_number_map, FieldMemOperand(result, HeapObject::kMapOffset)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4572 | } |
| 4573 | |
| 4574 | |
| 4575 | void MacroAssembler::AllocateHeapNumberWithValue(Register result, |
| 4576 | FPURegister value, |
| 4577 | Register scratch1, |
| 4578 | Register scratch2, |
| 4579 | Label* gc_required) { |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 4580 | LoadRoot(t8, Heap::kHeapNumberMapRootIndex); |
| 4581 | AllocateHeapNumber(result, scratch1, scratch2, t8, gc_required); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4582 | sdc1(value, FieldMemOperand(result, HeapNumber::kValueOffset)); |
| 4583 | } |
| 4584 | |
| 4585 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4586 | void MacroAssembler::AllocateJSValue(Register result, Register constructor, |
| 4587 | Register value, Register scratch1, |
| 4588 | Register scratch2, Label* gc_required) { |
| 4589 | DCHECK(!result.is(constructor)); |
| 4590 | DCHECK(!result.is(scratch1)); |
| 4591 | DCHECK(!result.is(scratch2)); |
| 4592 | DCHECK(!result.is(value)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4593 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4594 | // Allocate JSValue in new space. |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 4595 | Allocate(JSValue::kSize, result, scratch1, scratch2, gc_required, |
| 4596 | NO_ALLOCATION_FLAGS); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4597 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4598 | // Initialize the JSValue. |
| 4599 | LoadGlobalFunctionInitialMap(constructor, scratch1, scratch2); |
| 4600 | sw(scratch1, FieldMemOperand(result, HeapObject::kMapOffset)); |
| 4601 | LoadRoot(scratch1, Heap::kEmptyFixedArrayRootIndex); |
| 4602 | sw(scratch1, FieldMemOperand(result, JSObject::kPropertiesOffset)); |
| 4603 | sw(scratch1, FieldMemOperand(result, JSObject::kElementsOffset)); |
| 4604 | sw(value, FieldMemOperand(result, JSValue::kValueOffset)); |
| 4605 | STATIC_ASSERT(JSValue::kSize == 4 * kPointerSize); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4606 | } |
| 4607 | |
| 4608 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4609 | void MacroAssembler::CopyBytes(Register src, |
| 4610 | Register dst, |
| 4611 | Register length, |
| 4612 | Register scratch) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4613 | Label align_loop_1, word_loop, byte_loop, byte_loop_1, done; |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4614 | |
| 4615 | // Align src before copying in word size chunks. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4616 | Branch(&byte_loop, le, length, Operand(kPointerSize)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4617 | bind(&align_loop_1); |
| 4618 | And(scratch, src, kPointerSize - 1); |
| 4619 | Branch(&word_loop, eq, scratch, Operand(zero_reg)); |
| 4620 | lbu(scratch, MemOperand(src)); |
| 4621 | Addu(src, src, 1); |
| 4622 | sb(scratch, MemOperand(dst)); |
| 4623 | Addu(dst, dst, 1); |
| 4624 | Subu(length, length, Operand(1)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4625 | Branch(&align_loop_1, ne, length, Operand(zero_reg)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4626 | |
| 4627 | // Copy bytes in word size chunks. |
| 4628 | bind(&word_loop); |
| 4629 | if (emit_debug_code()) { |
| 4630 | And(scratch, src, kPointerSize - 1); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4631 | Assert(eq, kExpectingAlignmentForCopyBytes, |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4632 | scratch, Operand(zero_reg)); |
| 4633 | } |
| 4634 | Branch(&byte_loop, lt, length, Operand(kPointerSize)); |
| 4635 | lw(scratch, MemOperand(src)); |
| 4636 | Addu(src, src, kPointerSize); |
| 4637 | |
| 4638 | // TODO(kalmard) check if this can be optimized to use sw in most cases. |
| 4639 | // Can't use unaligned access - copy byte by byte. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4640 | if (kArchEndian == kLittle) { |
| 4641 | sb(scratch, MemOperand(dst, 0)); |
| 4642 | srl(scratch, scratch, 8); |
| 4643 | sb(scratch, MemOperand(dst, 1)); |
| 4644 | srl(scratch, scratch, 8); |
| 4645 | sb(scratch, MemOperand(dst, 2)); |
| 4646 | srl(scratch, scratch, 8); |
| 4647 | sb(scratch, MemOperand(dst, 3)); |
| 4648 | } else { |
| 4649 | sb(scratch, MemOperand(dst, 3)); |
| 4650 | srl(scratch, scratch, 8); |
| 4651 | sb(scratch, MemOperand(dst, 2)); |
| 4652 | srl(scratch, scratch, 8); |
| 4653 | sb(scratch, MemOperand(dst, 1)); |
| 4654 | srl(scratch, scratch, 8); |
| 4655 | sb(scratch, MemOperand(dst, 0)); |
| 4656 | } |
| 4657 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4658 | Addu(dst, dst, 4); |
| 4659 | |
| 4660 | Subu(length, length, Operand(kPointerSize)); |
| 4661 | Branch(&word_loop); |
| 4662 | |
| 4663 | // Copy the last bytes if any left. |
| 4664 | bind(&byte_loop); |
| 4665 | Branch(&done, eq, length, Operand(zero_reg)); |
| 4666 | bind(&byte_loop_1); |
| 4667 | lbu(scratch, MemOperand(src)); |
| 4668 | Addu(src, src, 1); |
| 4669 | sb(scratch, MemOperand(dst)); |
| 4670 | Addu(dst, dst, 1); |
| 4671 | Subu(length, length, Operand(1)); |
| 4672 | Branch(&byte_loop_1, ne, length, Operand(zero_reg)); |
| 4673 | bind(&done); |
| 4674 | } |
| 4675 | |
| 4676 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4677 | void MacroAssembler::InitializeFieldsWithFiller(Register current_address, |
| 4678 | Register end_address, |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4679 | Register filler) { |
| 4680 | Label loop, entry; |
| 4681 | Branch(&entry); |
| 4682 | bind(&loop); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4683 | sw(filler, MemOperand(current_address)); |
| 4684 | Addu(current_address, current_address, kPointerSize); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4685 | bind(&entry); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4686 | Branch(&loop, ult, current_address, Operand(end_address)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4687 | } |
| 4688 | |
| 4689 | |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 4690 | void MacroAssembler::CheckFastElements(Register map, |
| 4691 | Register scratch, |
| 4692 | Label* fail) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4693 | STATIC_ASSERT(FAST_SMI_ELEMENTS == 0); |
| 4694 | STATIC_ASSERT(FAST_HOLEY_SMI_ELEMENTS == 1); |
| 4695 | STATIC_ASSERT(FAST_ELEMENTS == 2); |
| 4696 | STATIC_ASSERT(FAST_HOLEY_ELEMENTS == 3); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 4697 | lbu(scratch, FieldMemOperand(map, Map::kBitField2Offset)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4698 | Branch(fail, hi, scratch, |
| 4699 | Operand(Map::kMaximumBitField2FastHoleyElementValue)); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 4700 | } |
| 4701 | |
| 4702 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4703 | void MacroAssembler::CheckFastObjectElements(Register map, |
| 4704 | Register scratch, |
| 4705 | Label* fail) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4706 | STATIC_ASSERT(FAST_SMI_ELEMENTS == 0); |
| 4707 | STATIC_ASSERT(FAST_HOLEY_SMI_ELEMENTS == 1); |
| 4708 | STATIC_ASSERT(FAST_ELEMENTS == 2); |
| 4709 | STATIC_ASSERT(FAST_HOLEY_ELEMENTS == 3); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4710 | lbu(scratch, FieldMemOperand(map, Map::kBitField2Offset)); |
| 4711 | Branch(fail, ls, scratch, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4712 | Operand(Map::kMaximumBitField2FastHoleySmiElementValue)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4713 | Branch(fail, hi, scratch, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4714 | Operand(Map::kMaximumBitField2FastHoleyElementValue)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4715 | } |
| 4716 | |
| 4717 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4718 | void MacroAssembler::CheckFastSmiElements(Register map, |
| 4719 | Register scratch, |
| 4720 | Label* fail) { |
| 4721 | STATIC_ASSERT(FAST_SMI_ELEMENTS == 0); |
| 4722 | STATIC_ASSERT(FAST_HOLEY_SMI_ELEMENTS == 1); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4723 | lbu(scratch, FieldMemOperand(map, Map::kBitField2Offset)); |
| 4724 | Branch(fail, hi, scratch, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4725 | Operand(Map::kMaximumBitField2FastHoleySmiElementValue)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4726 | } |
| 4727 | |
| 4728 | |
| 4729 | void MacroAssembler::StoreNumberToDoubleElements(Register value_reg, |
| 4730 | Register key_reg, |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4731 | Register elements_reg, |
| 4732 | Register scratch1, |
| 4733 | Register scratch2, |
| 4734 | Register scratch3, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4735 | Label* fail, |
| 4736 | int elements_offset) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4737 | DCHECK(!AreAliased(value_reg, key_reg, elements_reg, scratch1, scratch2, |
| 4738 | scratch3)); |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 4739 | Label smi_value, done; |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4740 | |
| 4741 | // Handle smi values specially. |
| 4742 | JumpIfSmi(value_reg, &smi_value); |
| 4743 | |
| 4744 | // Ensure that the object is a heap number |
| 4745 | CheckMap(value_reg, |
| 4746 | scratch1, |
| 4747 | Heap::kHeapNumberMapRootIndex, |
| 4748 | fail, |
| 4749 | DONT_DO_SMI_CHECK); |
| 4750 | |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 4751 | // Double value, turn potential sNaN into qNan. |
| 4752 | DoubleRegister double_result = f0; |
| 4753 | DoubleRegister double_scratch = f2; |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4754 | |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 4755 | ldc1(double_result, FieldMemOperand(value_reg, HeapNumber::kValueOffset)); |
| 4756 | Branch(USE_DELAY_SLOT, &done); // Canonicalization is one instruction. |
| 4757 | FPUCanonicalizeNaN(double_result, double_result); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4758 | |
| 4759 | bind(&smi_value); |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 4760 | Register untagged_value = scratch2; |
| 4761 | SmiUntag(untagged_value, value_reg); |
| 4762 | mtc1(untagged_value, double_scratch); |
| 4763 | cvt_d_w(double_result, double_scratch); |
| 4764 | |
| 4765 | bind(&done); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4766 | Addu(scratch1, elements_reg, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4767 | Operand(FixedDoubleArray::kHeaderSize - kHeapObjectTag - |
| 4768 | elements_offset)); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 4769 | Lsa(scratch1, scratch1, key_reg, kDoubleSizeLog2 - kSmiTagSize); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4770 | // scratch1 is now effective address of the double element |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 4771 | sdc1(double_result, MemOperand(scratch1, 0)); |
| 4772 | } |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4773 | |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 4774 | void MacroAssembler::SubNanPreservePayloadAndSign_s(FloatRegister fd, |
| 4775 | FloatRegister fs, |
| 4776 | FloatRegister ft) { |
| 4777 | FloatRegister dest = fd.is(fs) || fd.is(ft) ? kLithiumScratchDouble : fd; |
| 4778 | Label check_nan, save_payload, done; |
| 4779 | Register scratch1 = t8; |
| 4780 | Register scratch2 = t9; |
| 4781 | |
| 4782 | sub_s(dest, fs, ft); |
| 4783 | // Check if the result of subtraction is NaN. |
| 4784 | BranchF32(nullptr, &check_nan, eq, fs, ft); |
| 4785 | Branch(USE_DELAY_SLOT, &done); |
| 4786 | dest.is(fd) ? nop() : mov_s(fd, dest); |
| 4787 | |
| 4788 | bind(&check_nan); |
| 4789 | // Check if first operand is a NaN. |
| 4790 | mfc1(scratch1, fs); |
| 4791 | BranchF32(nullptr, &save_payload, eq, fs, fs); |
| 4792 | // Second operand must be a NaN. |
| 4793 | mfc1(scratch1, ft); |
| 4794 | |
| 4795 | bind(&save_payload); |
| 4796 | // Reserve payload. |
| 4797 | And(scratch1, scratch1, |
| 4798 | Operand(kSingleSignMask | ((1 << kSingleNaNShift) - 1))); |
| 4799 | mfc1(scratch2, dest); |
| 4800 | And(scratch2, scratch2, Operand(kSingleNaNMask)); |
| 4801 | Or(scratch2, scratch2, scratch1); |
| 4802 | mtc1(scratch2, fd); |
| 4803 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4804 | bind(&done); |
| 4805 | } |
| 4806 | |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 4807 | void MacroAssembler::SubNanPreservePayloadAndSign_d(DoubleRegister fd, |
| 4808 | DoubleRegister fs, |
| 4809 | DoubleRegister ft) { |
| 4810 | FloatRegister dest = fd.is(fs) || fd.is(ft) ? kLithiumScratchDouble : fd; |
| 4811 | Label check_nan, save_payload, done; |
| 4812 | Register scratch1 = t8; |
| 4813 | Register scratch2 = t9; |
| 4814 | |
| 4815 | sub_d(dest, fs, ft); |
| 4816 | // Check if the result of subtraction is NaN. |
| 4817 | BranchF64(nullptr, &check_nan, eq, fs, ft); |
| 4818 | Branch(USE_DELAY_SLOT, &done); |
| 4819 | dest.is(fd) ? nop() : mov_d(fd, dest); |
| 4820 | |
| 4821 | bind(&check_nan); |
| 4822 | // Check if first operand is a NaN. |
| 4823 | Mfhc1(scratch1, fs); |
| 4824 | mov_s(dest, fs); |
| 4825 | BranchF64(nullptr, &save_payload, eq, fs, fs); |
| 4826 | // Second operand must be a NaN. |
| 4827 | Mfhc1(scratch1, ft); |
| 4828 | mov_s(dest, ft); |
| 4829 | |
| 4830 | bind(&save_payload); |
| 4831 | // Reserve payload. |
| 4832 | And(scratch1, scratch1, |
| 4833 | Operand(kDoubleSignMask | ((1 << kDoubleNaNShift) - 1))); |
| 4834 | Mfhc1(scratch2, dest); |
| 4835 | And(scratch2, scratch2, Operand(kDoubleNaNMask)); |
| 4836 | Or(scratch2, scratch2, scratch1); |
| 4837 | Move_s(fd, dest); |
| 4838 | Mthc1(scratch2, fd); |
| 4839 | |
| 4840 | bind(&done); |
| 4841 | } |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4842 | |
| 4843 | void MacroAssembler::CompareMapAndBranch(Register obj, |
| 4844 | Register scratch, |
| 4845 | Handle<Map> map, |
| 4846 | Label* early_success, |
| 4847 | Condition cond, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4848 | Label* branch_to) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4849 | lw(scratch, FieldMemOperand(obj, HeapObject::kMapOffset)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4850 | CompareMapAndBranch(scratch, map, early_success, cond, branch_to); |
| 4851 | } |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4852 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4853 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4854 | void MacroAssembler::CompareMapAndBranch(Register obj_map, |
| 4855 | Handle<Map> map, |
| 4856 | Label* early_success, |
| 4857 | Condition cond, |
| 4858 | Label* branch_to) { |
| 4859 | Branch(branch_to, cond, obj_map, Operand(map)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4860 | } |
| 4861 | |
| 4862 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4863 | void MacroAssembler::CheckMap(Register obj, |
| 4864 | Register scratch, |
| 4865 | Handle<Map> map, |
| 4866 | Label* fail, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4867 | SmiCheckType smi_check_type) { |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4868 | if (smi_check_type == DO_SMI_CHECK) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4869 | JumpIfSmi(obj, fail); |
| 4870 | } |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4871 | Label success; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4872 | CompareMapAndBranch(obj, scratch, map, &success, ne, fail); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4873 | bind(&success); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4874 | } |
| 4875 | |
| 4876 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 4877 | void MacroAssembler::DispatchWeakMap(Register obj, Register scratch1, |
| 4878 | Register scratch2, Handle<WeakCell> cell, |
| 4879 | Handle<Code> success, |
| 4880 | SmiCheckType smi_check_type) { |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4881 | Label fail; |
| 4882 | if (smi_check_type == DO_SMI_CHECK) { |
| 4883 | JumpIfSmi(obj, &fail); |
| 4884 | } |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 4885 | lw(scratch1, FieldMemOperand(obj, HeapObject::kMapOffset)); |
| 4886 | GetWeakValue(scratch2, cell); |
| 4887 | Jump(success, RelocInfo::CODE_TARGET, eq, scratch1, Operand(scratch2)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4888 | bind(&fail); |
| 4889 | } |
| 4890 | |
| 4891 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4892 | void MacroAssembler::CheckMap(Register obj, |
| 4893 | Register scratch, |
| 4894 | Heap::RootListIndex index, |
| 4895 | Label* fail, |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4896 | SmiCheckType smi_check_type) { |
| 4897 | if (smi_check_type == DO_SMI_CHECK) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4898 | JumpIfSmi(obj, fail); |
| 4899 | } |
| 4900 | lw(scratch, FieldMemOperand(obj, HeapObject::kMapOffset)); |
| 4901 | LoadRoot(at, index); |
| 4902 | Branch(fail, ne, scratch, Operand(at)); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 4903 | } |
| 4904 | |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 4905 | void MacroAssembler::FPUCanonicalizeNaN(const DoubleRegister dst, |
| 4906 | const DoubleRegister src) { |
| 4907 | sub_d(dst, src, kDoubleRegZero); |
| 4908 | } |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 4909 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 4910 | void MacroAssembler::GetWeakValue(Register value, Handle<WeakCell> cell) { |
| 4911 | li(value, Operand(cell)); |
| 4912 | lw(value, FieldMemOperand(value, WeakCell::kValueOffset)); |
| 4913 | } |
| 4914 | |
| 4915 | |
| 4916 | void MacroAssembler::LoadWeakValue(Register value, Handle<WeakCell> cell, |
| 4917 | Label* miss) { |
| 4918 | GetWeakValue(value, cell); |
| 4919 | JumpIfSmi(value, miss); |
| 4920 | } |
| 4921 | |
| 4922 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4923 | void MacroAssembler::MovFromFloatResult(DoubleRegister dst) { |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4924 | if (IsMipsSoftFloatABI) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4925 | if (kArchEndian == kLittle) { |
| 4926 | Move(dst, v0, v1); |
| 4927 | } else { |
| 4928 | Move(dst, v1, v0); |
| 4929 | } |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4930 | } else { |
| 4931 | Move(dst, f0); // Reg f0 is o32 ABI FP return value. |
| 4932 | } |
| 4933 | } |
| 4934 | |
| 4935 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4936 | void MacroAssembler::MovFromFloatParameter(DoubleRegister dst) { |
| 4937 | if (IsMipsSoftFloatABI) { |
| 4938 | if (kArchEndian == kLittle) { |
| 4939 | Move(dst, a0, a1); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4940 | } else { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4941 | Move(dst, a1, a0); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4942 | } |
| 4943 | } else { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4944 | Move(dst, f12); // Reg f12 is o32 ABI FP first argument value. |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4945 | } |
| 4946 | } |
| 4947 | |
| 4948 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4949 | void MacroAssembler::MovToFloatParameter(DoubleRegister src) { |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4950 | if (!IsMipsSoftFloatABI) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4951 | Move(f12, src); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4952 | } else { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4953 | if (kArchEndian == kLittle) { |
| 4954 | Move(a0, a1, src); |
| 4955 | } else { |
| 4956 | Move(a1, a0, src); |
| 4957 | } |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4958 | } |
| 4959 | } |
| 4960 | |
| 4961 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4962 | void MacroAssembler::MovToFloatResult(DoubleRegister src) { |
| 4963 | if (!IsMipsSoftFloatABI) { |
| 4964 | Move(f0, src); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4965 | } else { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4966 | if (kArchEndian == kLittle) { |
| 4967 | Move(v0, v1, src); |
| 4968 | } else { |
| 4969 | Move(v1, v0, src); |
| 4970 | } |
| 4971 | } |
| 4972 | } |
| 4973 | |
| 4974 | |
| 4975 | void MacroAssembler::MovToFloatParameters(DoubleRegister src1, |
| 4976 | DoubleRegister src2) { |
| 4977 | if (!IsMipsSoftFloatABI) { |
| 4978 | if (src2.is(f12)) { |
| 4979 | DCHECK(!src1.is(f14)); |
| 4980 | Move(f14, src2); |
| 4981 | Move(f12, src1); |
| 4982 | } else { |
| 4983 | Move(f12, src1); |
| 4984 | Move(f14, src2); |
| 4985 | } |
| 4986 | } else { |
| 4987 | if (kArchEndian == kLittle) { |
| 4988 | Move(a0, a1, src1); |
| 4989 | Move(a2, a3, src2); |
| 4990 | } else { |
| 4991 | Move(a1, a0, src1); |
| 4992 | Move(a3, a2, src2); |
| 4993 | } |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4994 | } |
| 4995 | } |
| 4996 | |
| 4997 | |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 4998 | // ----------------------------------------------------------------------------- |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4999 | // JavaScript invokes. |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 5000 | |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 5001 | void MacroAssembler::PrepareForTailCall(const ParameterCount& callee_args_count, |
| 5002 | Register caller_args_count_reg, |
| 5003 | Register scratch0, Register scratch1) { |
| 5004 | #if DEBUG |
| 5005 | if (callee_args_count.is_reg()) { |
| 5006 | DCHECK(!AreAliased(callee_args_count.reg(), caller_args_count_reg, scratch0, |
| 5007 | scratch1)); |
| 5008 | } else { |
| 5009 | DCHECK(!AreAliased(caller_args_count_reg, scratch0, scratch1)); |
| 5010 | } |
| 5011 | #endif |
| 5012 | |
| 5013 | // Calculate the end of destination area where we will put the arguments |
| 5014 | // after we drop current frame. We add kPointerSize to count the receiver |
| 5015 | // argument which is not included into formal parameters count. |
| 5016 | Register dst_reg = scratch0; |
| 5017 | Lsa(dst_reg, fp, caller_args_count_reg, kPointerSizeLog2); |
| 5018 | Addu(dst_reg, dst_reg, |
| 5019 | Operand(StandardFrameConstants::kCallerSPOffset + kPointerSize)); |
| 5020 | |
| 5021 | Register src_reg = caller_args_count_reg; |
| 5022 | // Calculate the end of source area. +kPointerSize is for the receiver. |
| 5023 | if (callee_args_count.is_reg()) { |
| 5024 | Lsa(src_reg, sp, callee_args_count.reg(), kPointerSizeLog2); |
| 5025 | Addu(src_reg, src_reg, Operand(kPointerSize)); |
| 5026 | } else { |
| 5027 | Addu(src_reg, sp, |
| 5028 | Operand((callee_args_count.immediate() + 1) * kPointerSize)); |
| 5029 | } |
| 5030 | |
| 5031 | if (FLAG_debug_code) { |
| 5032 | Check(lo, kStackAccessBelowStackPointer, src_reg, Operand(dst_reg)); |
| 5033 | } |
| 5034 | |
| 5035 | // Restore caller's frame pointer and return address now as they will be |
| 5036 | // overwritten by the copying loop. |
| 5037 | lw(ra, MemOperand(fp, StandardFrameConstants::kCallerPCOffset)); |
| 5038 | lw(fp, MemOperand(fp, StandardFrameConstants::kCallerFPOffset)); |
| 5039 | |
| 5040 | // Now copy callee arguments to the caller frame going backwards to avoid |
| 5041 | // callee arguments corruption (source and destination areas could overlap). |
| 5042 | |
| 5043 | // Both src_reg and dst_reg are pointing to the word after the one to copy, |
| 5044 | // so they must be pre-decremented in the loop. |
| 5045 | Register tmp_reg = scratch1; |
| 5046 | Label loop, entry; |
| 5047 | Branch(&entry); |
| 5048 | bind(&loop); |
| 5049 | Subu(src_reg, src_reg, Operand(kPointerSize)); |
| 5050 | Subu(dst_reg, dst_reg, Operand(kPointerSize)); |
| 5051 | lw(tmp_reg, MemOperand(src_reg)); |
| 5052 | sw(tmp_reg, MemOperand(dst_reg)); |
| 5053 | bind(&entry); |
| 5054 | Branch(&loop, ne, sp, Operand(src_reg)); |
| 5055 | |
| 5056 | // Leave current frame. |
| 5057 | mov(sp, dst_reg); |
| 5058 | } |
| 5059 | |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 5060 | void MacroAssembler::InvokePrologue(const ParameterCount& expected, |
| 5061 | const ParameterCount& actual, |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 5062 | Label* done, |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5063 | bool* definitely_mismatches, |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5064 | InvokeFlag flag, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5065 | const CallWrapper& call_wrapper) { |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 5066 | bool definitely_matches = false; |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5067 | *definitely_mismatches = false; |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 5068 | Label regular_invoke; |
| 5069 | |
| 5070 | // Check whether the expected and actual arguments count match. If not, |
| 5071 | // setup registers according to contract with ArgumentsAdaptorTrampoline: |
| 5072 | // a0: actual arguments count |
| 5073 | // a1: function (passed through to callee) |
| 5074 | // a2: expected arguments count |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 5075 | |
| 5076 | // The code below is made a lot easier because the calling code already sets |
| 5077 | // up actual and expected registers according to the contract if values are |
| 5078 | // passed in registers. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5079 | DCHECK(actual.is_immediate() || actual.reg().is(a0)); |
| 5080 | DCHECK(expected.is_immediate() || expected.reg().is(a2)); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 5081 | |
| 5082 | if (expected.is_immediate()) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5083 | DCHECK(actual.is_immediate()); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 5084 | li(a0, Operand(actual.immediate())); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 5085 | if (expected.immediate() == actual.immediate()) { |
| 5086 | definitely_matches = true; |
| 5087 | } else { |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 5088 | const int sentinel = SharedFunctionInfo::kDontAdaptArgumentsSentinel; |
| 5089 | if (expected.immediate() == sentinel) { |
| 5090 | // Don't worry about adapting arguments for builtins that |
| 5091 | // don't want that done. Skip adaption code by making it look |
| 5092 | // like we have a match between expected and actual number of |
| 5093 | // arguments. |
| 5094 | definitely_matches = true; |
| 5095 | } else { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5096 | *definitely_mismatches = true; |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 5097 | li(a2, Operand(expected.immediate())); |
| 5098 | } |
| 5099 | } |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 5100 | } else if (actual.is_immediate()) { |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 5101 | li(a0, Operand(actual.immediate())); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 5102 | Branch(®ular_invoke, eq, expected.reg(), Operand(a0)); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 5103 | } else { |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 5104 | Branch(®ular_invoke, eq, expected.reg(), Operand(actual.reg())); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 5105 | } |
| 5106 | |
| 5107 | if (!definitely_matches) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5108 | Handle<Code> adaptor = |
| 5109 | isolate()->builtins()->ArgumentsAdaptorTrampoline(); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 5110 | if (flag == CALL_FUNCTION) { |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 5111 | call_wrapper.BeforeCall(CallSize(adaptor)); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 5112 | Call(adaptor); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 5113 | call_wrapper.AfterCall(); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5114 | if (!*definitely_mismatches) { |
| 5115 | Branch(done); |
| 5116 | } |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 5117 | } else { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5118 | Jump(adaptor, RelocInfo::CODE_TARGET); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 5119 | } |
| 5120 | bind(®ular_invoke); |
| 5121 | } |
| 5122 | } |
| 5123 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5124 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 5125 | void MacroAssembler::FloodFunctionIfStepping(Register fun, Register new_target, |
| 5126 | const ParameterCount& expected, |
| 5127 | const ParameterCount& actual) { |
| 5128 | Label skip_flooding; |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 5129 | ExternalReference last_step_action = |
| 5130 | ExternalReference::debug_last_step_action_address(isolate()); |
| 5131 | STATIC_ASSERT(StepFrame > StepIn); |
| 5132 | li(t0, Operand(last_step_action)); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 5133 | lb(t0, MemOperand(t0)); |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 5134 | Branch(&skip_flooding, lt, t0, Operand(StepIn)); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 5135 | { |
| 5136 | FrameScope frame(this, |
| 5137 | has_frame() ? StackFrame::NONE : StackFrame::INTERNAL); |
| 5138 | if (expected.is_reg()) { |
| 5139 | SmiTag(expected.reg()); |
| 5140 | Push(expected.reg()); |
| 5141 | } |
| 5142 | if (actual.is_reg()) { |
| 5143 | SmiTag(actual.reg()); |
| 5144 | Push(actual.reg()); |
| 5145 | } |
| 5146 | if (new_target.is_valid()) { |
| 5147 | Push(new_target); |
| 5148 | } |
| 5149 | Push(fun); |
| 5150 | Push(fun); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 5151 | CallRuntime(Runtime::kDebugPrepareStepInIfStepping); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 5152 | Pop(fun); |
| 5153 | if (new_target.is_valid()) { |
| 5154 | Pop(new_target); |
| 5155 | } |
| 5156 | if (actual.is_reg()) { |
| 5157 | Pop(actual.reg()); |
| 5158 | SmiUntag(actual.reg()); |
| 5159 | } |
| 5160 | if (expected.is_reg()) { |
| 5161 | Pop(expected.reg()); |
| 5162 | SmiUntag(expected.reg()); |
| 5163 | } |
| 5164 | } |
| 5165 | bind(&skip_flooding); |
| 5166 | } |
| 5167 | |
| 5168 | |
| 5169 | void MacroAssembler::InvokeFunctionCode(Register function, Register new_target, |
| 5170 | const ParameterCount& expected, |
| 5171 | const ParameterCount& actual, |
| 5172 | InvokeFlag flag, |
| 5173 | const CallWrapper& call_wrapper) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5174 | // You can't call a function without a valid frame. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5175 | DCHECK(flag == JUMP_FUNCTION || has_frame()); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 5176 | DCHECK(function.is(a1)); |
| 5177 | DCHECK_IMPLIES(new_target.is_valid(), new_target.is(a3)); |
| 5178 | |
| 5179 | if (call_wrapper.NeedsDebugStepCheck()) { |
| 5180 | FloodFunctionIfStepping(function, new_target, expected, actual); |
| 5181 | } |
| 5182 | |
| 5183 | // Clear the new.target register if not given. |
| 5184 | if (!new_target.is_valid()) { |
| 5185 | LoadRoot(a3, Heap::kUndefinedValueRootIndex); |
| 5186 | } |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5187 | |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 5188 | Label done; |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5189 | bool definitely_mismatches = false; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 5190 | InvokePrologue(expected, actual, &done, &definitely_mismatches, flag, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5191 | call_wrapper); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5192 | if (!definitely_mismatches) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 5193 | // We call indirectly through the code field in the function to |
| 5194 | // allow recompilation to take effect without changing any of the |
| 5195 | // call sites. |
| 5196 | Register code = t0; |
| 5197 | lw(code, FieldMemOperand(function, JSFunction::kCodeEntryOffset)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5198 | if (flag == CALL_FUNCTION) { |
| 5199 | call_wrapper.BeforeCall(CallSize(code)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5200 | Call(code); |
| 5201 | call_wrapper.AfterCall(); |
| 5202 | } else { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5203 | DCHECK(flag == JUMP_FUNCTION); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5204 | Jump(code); |
| 5205 | } |
| 5206 | // Continue here if InvokePrologue does handle the invocation due to |
| 5207 | // mismatched parameter counts. |
| 5208 | bind(&done); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 5209 | } |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 5210 | } |
| 5211 | |
| 5212 | |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 5213 | void MacroAssembler::InvokeFunction(Register function, |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 5214 | Register new_target, |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 5215 | const ParameterCount& actual, |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5216 | InvokeFlag flag, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5217 | const CallWrapper& call_wrapper) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5218 | // You can't call a function without a valid frame. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5219 | DCHECK(flag == JUMP_FUNCTION || has_frame()); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5220 | |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 5221 | // Contract with called JS functions requires that function is passed in a1. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5222 | DCHECK(function.is(a1)); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 5223 | Register expected_reg = a2; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 5224 | Register temp_reg = t0; |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 5225 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 5226 | lw(temp_reg, FieldMemOperand(a1, JSFunction::kSharedFunctionInfoOffset)); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 5227 | lw(cp, FieldMemOperand(a1, JSFunction::kContextOffset)); |
| 5228 | lw(expected_reg, |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 5229 | FieldMemOperand(temp_reg, |
| 5230 | SharedFunctionInfo::kFormalParameterCountOffset)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5231 | sra(expected_reg, expected_reg, kSmiTagSize); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 5232 | |
| 5233 | ParameterCount expected(expected_reg); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 5234 | InvokeFunctionCode(function, new_target, expected, actual, flag, |
| 5235 | call_wrapper); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5236 | } |
| 5237 | |
| 5238 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5239 | void MacroAssembler::InvokeFunction(Register function, |
| 5240 | const ParameterCount& expected, |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5241 | const ParameterCount& actual, |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 5242 | InvokeFlag flag, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5243 | const CallWrapper& call_wrapper) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5244 | // You can't call a function without a valid frame. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5245 | DCHECK(flag == JUMP_FUNCTION || has_frame()); |
| 5246 | |
| 5247 | // Contract with called JS functions requires that function is passed in a1. |
| 5248 | DCHECK(function.is(a1)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5249 | |
| 5250 | // Get the function and setup the context. |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5251 | lw(cp, FieldMemOperand(a1, JSFunction::kContextOffset)); |
| 5252 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 5253 | InvokeFunctionCode(a1, no_reg, expected, actual, flag, call_wrapper); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5254 | } |
| 5255 | |
| 5256 | |
| 5257 | void MacroAssembler::InvokeFunction(Handle<JSFunction> function, |
| 5258 | const ParameterCount& expected, |
| 5259 | const ParameterCount& actual, |
| 5260 | InvokeFlag flag, |
| 5261 | const CallWrapper& call_wrapper) { |
| 5262 | li(a1, function); |
| 5263 | InvokeFunction(a1, expected, actual, flag, call_wrapper); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5264 | } |
| 5265 | |
| 5266 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5267 | void MacroAssembler::IsObjectJSStringType(Register object, |
| 5268 | Register scratch, |
| 5269 | Label* fail) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5270 | DCHECK(kNotStringTag != 0); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5271 | |
| 5272 | lw(scratch, FieldMemOperand(object, HeapObject::kMapOffset)); |
| 5273 | lbu(scratch, FieldMemOperand(scratch, Map::kInstanceTypeOffset)); |
| 5274 | And(scratch, scratch, Operand(kIsNotStringMask)); |
| 5275 | Branch(fail, ne, scratch, Operand(zero_reg)); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 5276 | } |
| 5277 | |
| 5278 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5279 | void MacroAssembler::IsObjectNameType(Register object, |
| 5280 | Register scratch, |
| 5281 | Label* fail) { |
| 5282 | lw(scratch, FieldMemOperand(object, HeapObject::kMapOffset)); |
| 5283 | lbu(scratch, FieldMemOperand(scratch, Map::kInstanceTypeOffset)); |
| 5284 | Branch(fail, hi, scratch, Operand(LAST_NAME_TYPE)); |
| 5285 | } |
| 5286 | |
| 5287 | |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 5288 | // --------------------------------------------------------------------------- |
| 5289 | // Support functions. |
| 5290 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5291 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 5292 | void MacroAssembler::GetMapConstructor(Register result, Register map, |
| 5293 | Register temp, Register temp2) { |
| 5294 | Label done, loop; |
| 5295 | lw(result, FieldMemOperand(map, Map::kConstructorOrBackPointerOffset)); |
| 5296 | bind(&loop); |
| 5297 | JumpIfSmi(result, &done); |
| 5298 | GetObjectType(result, temp, temp2); |
| 5299 | Branch(&done, ne, temp2, Operand(MAP_TYPE)); |
| 5300 | lw(result, FieldMemOperand(result, Map::kConstructorOrBackPointerOffset)); |
| 5301 | Branch(&loop); |
| 5302 | bind(&done); |
| 5303 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5304 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5305 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 5306 | void MacroAssembler::TryGetFunctionPrototype(Register function, Register result, |
| 5307 | Register scratch, Label* miss) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5308 | // Get the prototype or initial map from the function. |
| 5309 | lw(result, |
| 5310 | FieldMemOperand(function, JSFunction::kPrototypeOrInitialMapOffset)); |
| 5311 | |
| 5312 | // If the prototype or initial map is the hole, don't return it and |
| 5313 | // simply miss the cache instead. This will allow us to allocate a |
| 5314 | // prototype object on-demand in the runtime system. |
| 5315 | LoadRoot(t8, Heap::kTheHoleValueRootIndex); |
| 5316 | Branch(miss, eq, result, Operand(t8)); |
| 5317 | |
| 5318 | // If the function does not have an initial map, we're done. |
| 5319 | Label done; |
| 5320 | GetObjectType(result, scratch, scratch); |
| 5321 | Branch(&done, ne, scratch, Operand(MAP_TYPE)); |
| 5322 | |
| 5323 | // Get the prototype from the initial map. |
| 5324 | lw(result, FieldMemOperand(result, Map::kPrototypeOffset)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5325 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5326 | // All done. |
| 5327 | bind(&done); |
| 5328 | } |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 5329 | |
| 5330 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5331 | void MacroAssembler::GetObjectType(Register object, |
| 5332 | Register map, |
| 5333 | Register type_reg) { |
| 5334 | lw(map, FieldMemOperand(object, HeapObject::kMapOffset)); |
| 5335 | lbu(type_reg, FieldMemOperand(map, Map::kInstanceTypeOffset)); |
| 5336 | } |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 5337 | |
| 5338 | |
| 5339 | // ----------------------------------------------------------------------------- |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 5340 | // Runtime calls. |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 5341 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5342 | void MacroAssembler::CallStub(CodeStub* stub, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5343 | TypeFeedbackId ast_id, |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5344 | Condition cond, |
| 5345 | Register r1, |
| 5346 | const Operand& r2, |
| 5347 | BranchDelaySlot bd) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5348 | DCHECK(AllowThisStubCall(stub)); // Stub calls are not allowed in some stubs. |
| 5349 | Call(stub->GetCode(), RelocInfo::CODE_TARGET, ast_id, |
| 5350 | cond, r1, r2, bd); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 5351 | } |
| 5352 | |
| 5353 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5354 | void MacroAssembler::TailCallStub(CodeStub* stub, |
| 5355 | Condition cond, |
| 5356 | Register r1, |
| 5357 | const Operand& r2, |
| 5358 | BranchDelaySlot bd) { |
| 5359 | Jump(stub->GetCode(), RelocInfo::CODE_TARGET, cond, r1, r2, bd); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 5360 | } |
| 5361 | |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 5362 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5363 | bool MacroAssembler::AllowThisStubCall(CodeStub* stub) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5364 | return has_frame_ || !stub->SometimesSetsUpAFrame(); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 5365 | } |
| 5366 | |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 5367 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5368 | void MacroAssembler::IndexFromHash(Register hash, Register index) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5369 | // If the hash field contains an array index pick it out. The assert checks |
| 5370 | // that the constants for the maximum number of digits for an array index |
| 5371 | // cached in the hash field and the number of bits reserved for it does not |
| 5372 | // conflict. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5373 | DCHECK(TenToThe(String::kMaxCachedArrayIndexLength) < |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5374 | (1 << String::kArrayIndexValueBits)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5375 | DecodeFieldToSmi<String::ArrayIndexValueBits>(index, hash); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5376 | } |
| 5377 | |
| 5378 | |
| 5379 | void MacroAssembler::ObjectToDoubleFPURegister(Register object, |
| 5380 | FPURegister result, |
| 5381 | Register scratch1, |
| 5382 | Register scratch2, |
| 5383 | Register heap_number_map, |
| 5384 | Label* not_number, |
| 5385 | ObjectToDoubleFlags flags) { |
| 5386 | Label done; |
| 5387 | if ((flags & OBJECT_NOT_SMI) == 0) { |
| 5388 | Label not_smi; |
| 5389 | JumpIfNotSmi(object, ¬_smi); |
| 5390 | // Remove smi tag and convert to double. |
| 5391 | sra(scratch1, object, kSmiTagSize); |
| 5392 | mtc1(scratch1, result); |
| 5393 | cvt_d_w(result, result); |
| 5394 | Branch(&done); |
| 5395 | bind(¬_smi); |
| 5396 | } |
| 5397 | // Check for heap number and load double value from it. |
| 5398 | lw(scratch1, FieldMemOperand(object, HeapObject::kMapOffset)); |
| 5399 | Branch(not_number, ne, scratch1, Operand(heap_number_map)); |
| 5400 | |
| 5401 | if ((flags & AVOID_NANS_AND_INFINITIES) != 0) { |
| 5402 | // If exponent is all ones the number is either a NaN or +/-Infinity. |
| 5403 | Register exponent = scratch1; |
| 5404 | Register mask_reg = scratch2; |
| 5405 | lw(exponent, FieldMemOperand(object, HeapNumber::kExponentOffset)); |
| 5406 | li(mask_reg, HeapNumber::kExponentMask); |
| 5407 | |
| 5408 | And(exponent, exponent, mask_reg); |
| 5409 | Branch(not_number, eq, exponent, Operand(mask_reg)); |
| 5410 | } |
| 5411 | ldc1(result, FieldMemOperand(object, HeapNumber::kValueOffset)); |
| 5412 | bind(&done); |
| 5413 | } |
| 5414 | |
| 5415 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5416 | void MacroAssembler::SmiToDoubleFPURegister(Register smi, |
| 5417 | FPURegister value, |
| 5418 | Register scratch1) { |
| 5419 | sra(scratch1, smi, kSmiTagSize); |
| 5420 | mtc1(scratch1, value); |
| 5421 | cvt_d_w(value, value); |
| 5422 | } |
| 5423 | |
| 5424 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 5425 | static inline void BranchOvfHelper(MacroAssembler* masm, Register overflow_dst, |
| 5426 | Label* overflow_label, |
| 5427 | Label* no_overflow_label) { |
| 5428 | DCHECK(overflow_label || no_overflow_label); |
| 5429 | if (!overflow_label) { |
| 5430 | DCHECK(no_overflow_label); |
| 5431 | masm->Branch(no_overflow_label, ge, overflow_dst, Operand(zero_reg)); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 5432 | } else { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 5433 | masm->Branch(overflow_label, lt, overflow_dst, Operand(zero_reg)); |
| 5434 | if (no_overflow_label) masm->Branch(no_overflow_label); |
| 5435 | } |
| 5436 | } |
| 5437 | |
| 5438 | |
| 5439 | void MacroAssembler::AddBranchOvf(Register dst, Register left, |
| 5440 | const Operand& right, Label* overflow_label, |
| 5441 | Label* no_overflow_label, Register scratch) { |
| 5442 | if (right.is_reg()) { |
| 5443 | AddBranchOvf(dst, left, right.rm(), overflow_label, no_overflow_label, |
| 5444 | scratch); |
| 5445 | } else { |
| 5446 | if (IsMipsArchVariant(kMips32r6)) { |
| 5447 | Register right_reg = t9; |
| 5448 | DCHECK(!left.is(right_reg)); |
| 5449 | li(right_reg, Operand(right)); |
| 5450 | AddBranchOvf(dst, left, right_reg, overflow_label, no_overflow_label); |
| 5451 | } else { |
| 5452 | Register overflow_dst = t9; |
| 5453 | DCHECK(!dst.is(scratch)); |
| 5454 | DCHECK(!dst.is(overflow_dst)); |
| 5455 | DCHECK(!scratch.is(overflow_dst)); |
| 5456 | DCHECK(!left.is(overflow_dst)); |
| 5457 | if (dst.is(left)) { |
| 5458 | mov(scratch, left); // Preserve left. |
| 5459 | Addu(dst, left, right.immediate()); // Left is overwritten. |
| 5460 | xor_(scratch, dst, scratch); // Original left. |
| 5461 | // Load right since xori takes uint16 as immediate. |
| 5462 | Addu(overflow_dst, zero_reg, right); |
| 5463 | xor_(overflow_dst, dst, overflow_dst); |
| 5464 | and_(overflow_dst, overflow_dst, scratch); |
| 5465 | } else { |
| 5466 | Addu(dst, left, right.immediate()); |
| 5467 | xor_(overflow_dst, dst, left); |
| 5468 | // Load right since xori takes uint16 as immediate. |
| 5469 | Addu(scratch, zero_reg, right); |
| 5470 | xor_(scratch, dst, scratch); |
| 5471 | and_(overflow_dst, scratch, overflow_dst); |
| 5472 | } |
| 5473 | BranchOvfHelper(this, overflow_dst, overflow_label, no_overflow_label); |
| 5474 | } |
| 5475 | } |
| 5476 | } |
| 5477 | |
| 5478 | |
| 5479 | void MacroAssembler::AddBranchOvf(Register dst, Register left, Register right, |
| 5480 | Label* overflow_label, |
| 5481 | Label* no_overflow_label, Register scratch) { |
| 5482 | if (IsMipsArchVariant(kMips32r6)) { |
| 5483 | if (!overflow_label) { |
| 5484 | DCHECK(no_overflow_label); |
| 5485 | DCHECK(!dst.is(scratch)); |
| 5486 | Register left_reg = left.is(dst) ? scratch : left; |
| 5487 | Register right_reg = right.is(dst) ? t9 : right; |
| 5488 | DCHECK(!dst.is(left_reg)); |
| 5489 | DCHECK(!dst.is(right_reg)); |
| 5490 | Move(left_reg, left); |
| 5491 | Move(right_reg, right); |
| 5492 | addu(dst, left, right); |
| 5493 | bnvc(left_reg, right_reg, no_overflow_label); |
| 5494 | } else { |
| 5495 | bovc(left, right, overflow_label); |
| 5496 | addu(dst, left, right); |
| 5497 | if (no_overflow_label) bc(no_overflow_label); |
| 5498 | } |
| 5499 | } else { |
| 5500 | Register overflow_dst = t9; |
| 5501 | DCHECK(!dst.is(scratch)); |
| 5502 | DCHECK(!dst.is(overflow_dst)); |
| 5503 | DCHECK(!scratch.is(overflow_dst)); |
| 5504 | DCHECK(!left.is(overflow_dst)); |
| 5505 | DCHECK(!right.is(overflow_dst)); |
| 5506 | DCHECK(!left.is(scratch)); |
| 5507 | DCHECK(!right.is(scratch)); |
| 5508 | |
| 5509 | if (left.is(right) && dst.is(left)) { |
| 5510 | mov(overflow_dst, right); |
| 5511 | right = overflow_dst; |
| 5512 | } |
| 5513 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 5514 | if (dst.is(left)) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 5515 | mov(scratch, left); // Preserve left. |
| 5516 | addu(dst, left, right); // Left is overwritten. |
| 5517 | xor_(scratch, dst, scratch); // Original left. |
| 5518 | xor_(overflow_dst, dst, right); |
| 5519 | and_(overflow_dst, overflow_dst, scratch); |
| 5520 | } else if (dst.is(right)) { |
| 5521 | mov(scratch, right); // Preserve right. |
| 5522 | addu(dst, left, right); // Right is overwritten. |
| 5523 | xor_(scratch, dst, scratch); // Original right. |
| 5524 | xor_(overflow_dst, dst, left); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 5525 | and_(overflow_dst, overflow_dst, scratch); |
| 5526 | } else { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 5527 | addu(dst, left, right); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 5528 | xor_(overflow_dst, dst, left); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 5529 | xor_(scratch, dst, right); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 5530 | and_(overflow_dst, scratch, overflow_dst); |
| 5531 | } |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 5532 | BranchOvfHelper(this, overflow_dst, overflow_label, no_overflow_label); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 5533 | } |
| 5534 | } |
| 5535 | |
| 5536 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 5537 | void MacroAssembler::SubBranchOvf(Register dst, Register left, |
| 5538 | const Operand& right, Label* overflow_label, |
| 5539 | Label* no_overflow_label, Register scratch) { |
| 5540 | DCHECK(overflow_label || no_overflow_label); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 5541 | if (right.is_reg()) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 5542 | SubBranchOvf(dst, left, right.rm(), overflow_label, no_overflow_label, |
| 5543 | scratch); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 5544 | } else { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 5545 | Register overflow_dst = t9; |
| 5546 | DCHECK(!dst.is(scratch)); |
| 5547 | DCHECK(!dst.is(overflow_dst)); |
| 5548 | DCHECK(!scratch.is(overflow_dst)); |
| 5549 | DCHECK(!left.is(overflow_dst)); |
| 5550 | DCHECK(!left.is(scratch)); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 5551 | if (dst.is(left)) { |
| 5552 | mov(scratch, left); // Preserve left. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 5553 | Subu(dst, left, right.immediate()); // Left is overwritten. |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 5554 | // Load right since xori takes uint16 as immediate. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 5555 | Addu(overflow_dst, zero_reg, right); |
| 5556 | xor_(overflow_dst, scratch, overflow_dst); // scratch is original left. |
| 5557 | xor_(scratch, dst, scratch); // scratch is original left. |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 5558 | and_(overflow_dst, scratch, overflow_dst); |
| 5559 | } else { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 5560 | Subu(dst, left, right); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 5561 | xor_(overflow_dst, dst, left); |
| 5562 | // Load right since xori takes uint16 as immediate. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 5563 | Addu(scratch, zero_reg, right); |
| 5564 | xor_(scratch, left, scratch); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 5565 | and_(overflow_dst, scratch, overflow_dst); |
| 5566 | } |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 5567 | BranchOvfHelper(this, overflow_dst, overflow_label, no_overflow_label); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 5568 | } |
| 5569 | } |
| 5570 | |
| 5571 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 5572 | void MacroAssembler::SubBranchOvf(Register dst, Register left, Register right, |
| 5573 | Label* overflow_label, |
| 5574 | Label* no_overflow_label, Register scratch) { |
| 5575 | DCHECK(overflow_label || no_overflow_label); |
| 5576 | Register overflow_dst = t9; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5577 | DCHECK(!dst.is(scratch)); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 5578 | DCHECK(!dst.is(overflow_dst)); |
| 5579 | DCHECK(!scratch.is(overflow_dst)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5580 | DCHECK(!overflow_dst.is(left)); |
| 5581 | DCHECK(!overflow_dst.is(right)); |
| 5582 | DCHECK(!scratch.is(left)); |
| 5583 | DCHECK(!scratch.is(right)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 5584 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5585 | // This happens with some crankshaft code. Since Subu works fine if |
| 5586 | // left == right, let's not make that restriction here. |
| 5587 | if (left.is(right)) { |
| 5588 | mov(dst, zero_reg); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 5589 | if (no_overflow_label) { |
| 5590 | Branch(no_overflow_label); |
| 5591 | } |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5592 | } |
| 5593 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 5594 | if (dst.is(left)) { |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 5595 | mov(scratch, left); // Preserve left. |
| 5596 | subu(dst, left, right); // Left is overwritten. |
| 5597 | xor_(overflow_dst, dst, scratch); // scratch is original left. |
| 5598 | xor_(scratch, scratch, right); // scratch is original left. |
| 5599 | and_(overflow_dst, scratch, overflow_dst); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 5600 | } else if (dst.is(right)) { |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 5601 | mov(scratch, right); // Preserve right. |
| 5602 | subu(dst, left, right); // Right is overwritten. |
| 5603 | xor_(overflow_dst, dst, left); |
| 5604 | xor_(scratch, left, scratch); // Original right. |
| 5605 | and_(overflow_dst, scratch, overflow_dst); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 5606 | } else { |
| 5607 | subu(dst, left, right); |
| 5608 | xor_(overflow_dst, dst, left); |
| 5609 | xor_(scratch, left, right); |
| 5610 | and_(overflow_dst, scratch, overflow_dst); |
| 5611 | } |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 5612 | BranchOvfHelper(this, overflow_dst, overflow_label, no_overflow_label); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 5613 | } |
| 5614 | |
| 5615 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 5616 | void MacroAssembler::CallRuntime(const Runtime::Function* f, int num_arguments, |
| 5617 | SaveFPRegsMode save_doubles, |
| 5618 | BranchDelaySlot bd) { |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 5619 | // All parameters are on the stack. v0 has the return value after call. |
| 5620 | |
| 5621 | // If the expected number of arguments of the runtime function is |
| 5622 | // constant, we check that the actual number of arguments match the |
| 5623 | // expectation. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5624 | CHECK(f->nargs < 0 || f->nargs == num_arguments); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 5625 | |
| 5626 | // TODO(1236192): Most runtime routines don't need the number of |
| 5627 | // arguments passed in because it is constant. At some point we |
| 5628 | // should remove this need and make the runtime routine entry code |
| 5629 | // smarter. |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5630 | PrepareCEntryArgs(num_arguments); |
| 5631 | PrepareCEntryFunction(ExternalReference(f, isolate())); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5632 | CEntryStub stub(isolate(), 1, save_doubles); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 5633 | CallStub(&stub, TypeFeedbackId::None(), al, zero_reg, Operand(zero_reg), bd); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 5634 | } |
| 5635 | |
| 5636 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5637 | void MacroAssembler::CallExternalReference(const ExternalReference& ext, |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5638 | int num_arguments, |
| 5639 | BranchDelaySlot bd) { |
| 5640 | PrepareCEntryArgs(num_arguments); |
| 5641 | PrepareCEntryFunction(ext); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5642 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5643 | CEntryStub stub(isolate(), 1); |
| 5644 | CallStub(&stub, TypeFeedbackId::None(), al, zero_reg, Operand(zero_reg), bd); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5645 | } |
| 5646 | |
| 5647 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 5648 | void MacroAssembler::TailCallRuntime(Runtime::FunctionId fid) { |
| 5649 | const Runtime::Function* function = Runtime::FunctionForId(fid); |
| 5650 | DCHECK_EQ(1, function->result_size); |
| 5651 | if (function->nargs >= 0) { |
| 5652 | PrepareCEntryArgs(function->nargs); |
| 5653 | } |
| 5654 | JumpToExternalReference(ExternalReference(fid, isolate())); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 5655 | } |
| 5656 | |
| 5657 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5658 | void MacroAssembler::JumpToExternalReference(const ExternalReference& builtin, |
| 5659 | BranchDelaySlot bd) { |
| 5660 | PrepareCEntryFunction(builtin); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5661 | CEntryStub stub(isolate(), 1); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5662 | Jump(stub.GetCode(), |
| 5663 | RelocInfo::CODE_TARGET, |
| 5664 | al, |
| 5665 | zero_reg, |
| 5666 | Operand(zero_reg), |
| 5667 | bd); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 5668 | } |
| 5669 | |
| 5670 | |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 5671 | void MacroAssembler::SetCounter(StatsCounter* counter, int value, |
| 5672 | Register scratch1, Register scratch2) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5673 | if (FLAG_native_code_counters && counter->Enabled()) { |
| 5674 | li(scratch1, Operand(value)); |
| 5675 | li(scratch2, Operand(ExternalReference(counter))); |
| 5676 | sw(scratch1, MemOperand(scratch2)); |
| 5677 | } |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 5678 | } |
| 5679 | |
| 5680 | |
| 5681 | void MacroAssembler::IncrementCounter(StatsCounter* counter, int value, |
| 5682 | Register scratch1, Register scratch2) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5683 | DCHECK(value > 0); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5684 | if (FLAG_native_code_counters && counter->Enabled()) { |
| 5685 | li(scratch2, Operand(ExternalReference(counter))); |
| 5686 | lw(scratch1, MemOperand(scratch2)); |
| 5687 | Addu(scratch1, scratch1, Operand(value)); |
| 5688 | sw(scratch1, MemOperand(scratch2)); |
| 5689 | } |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 5690 | } |
| 5691 | |
| 5692 | |
| 5693 | void MacroAssembler::DecrementCounter(StatsCounter* counter, int value, |
| 5694 | Register scratch1, Register scratch2) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5695 | DCHECK(value > 0); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5696 | if (FLAG_native_code_counters && counter->Enabled()) { |
| 5697 | li(scratch2, Operand(ExternalReference(counter))); |
| 5698 | lw(scratch1, MemOperand(scratch2)); |
| 5699 | Subu(scratch1, scratch1, Operand(value)); |
| 5700 | sw(scratch1, MemOperand(scratch2)); |
| 5701 | } |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 5702 | } |
| 5703 | |
| 5704 | |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 5705 | // ----------------------------------------------------------------------------- |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 5706 | // Debugging. |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 5707 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5708 | void MacroAssembler::Assert(Condition cc, BailoutReason reason, |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 5709 | Register rs, Operand rt) { |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 5710 | if (emit_debug_code()) |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5711 | Check(cc, reason, rs, rt); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5712 | } |
| 5713 | |
| 5714 | |
| 5715 | void MacroAssembler::AssertFastElements(Register elements) { |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 5716 | if (emit_debug_code()) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5717 | DCHECK(!elements.is(at)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5718 | Label ok; |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 5719 | push(elements); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5720 | lw(elements, FieldMemOperand(elements, HeapObject::kMapOffset)); |
| 5721 | LoadRoot(at, Heap::kFixedArrayMapRootIndex); |
| 5722 | Branch(&ok, eq, elements, Operand(at)); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 5723 | LoadRoot(at, Heap::kFixedDoubleArrayMapRootIndex); |
| 5724 | Branch(&ok, eq, elements, Operand(at)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5725 | LoadRoot(at, Heap::kFixedCOWArrayMapRootIndex); |
| 5726 | Branch(&ok, eq, elements, Operand(at)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5727 | Abort(kJSObjectWithFastElementsMapHasSlowElements); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5728 | bind(&ok); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 5729 | pop(elements); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5730 | } |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 5731 | } |
| 5732 | |
| 5733 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5734 | void MacroAssembler::Check(Condition cc, BailoutReason reason, |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 5735 | Register rs, Operand rt) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5736 | Label L; |
| 5737 | Branch(&L, cc, rs, rt); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5738 | Abort(reason); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 5739 | // Will not return here. |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5740 | bind(&L); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 5741 | } |
| 5742 | |
| 5743 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5744 | void MacroAssembler::Abort(BailoutReason reason) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5745 | Label abort_start; |
| 5746 | bind(&abort_start); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5747 | #ifdef DEBUG |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5748 | const char* msg = GetBailoutReason(reason); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5749 | if (msg != NULL) { |
| 5750 | RecordComment("Abort message: "); |
| 5751 | RecordComment(msg); |
| 5752 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5753 | |
| 5754 | if (FLAG_trap_on_abort) { |
| 5755 | stop(msg); |
| 5756 | return; |
| 5757 | } |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5758 | #endif |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5759 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5760 | li(a0, Operand(Smi::FromInt(reason))); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 5761 | push(a0); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5762 | // Disable stub call restrictions to always allow calls to abort. |
| 5763 | if (!has_frame_) { |
| 5764 | // We don't actually want to generate a pile of code for this, so just |
| 5765 | // claim there is a stack frame, without generating one. |
| 5766 | FrameScope scope(this, StackFrame::NONE); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 5767 | CallRuntime(Runtime::kAbort); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5768 | } else { |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 5769 | CallRuntime(Runtime::kAbort); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5770 | } |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 5771 | // Will not return here. |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5772 | if (is_trampoline_pool_blocked()) { |
| 5773 | // If the calling code cares about the exact number of |
| 5774 | // instructions generated, we insert padding here to keep the size |
| 5775 | // of the Abort macro constant. |
| 5776 | // Currently in debug mode with debug_code enabled the number of |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5777 | // generated instructions is 10, so we use this as a maximum value. |
| 5778 | static const int kExpectedAbortInstructions = 10; |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5779 | int abort_instructions = InstructionsGeneratedSince(&abort_start); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5780 | DCHECK(abort_instructions <= kExpectedAbortInstructions); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5781 | while (abort_instructions++ < kExpectedAbortInstructions) { |
| 5782 | nop(); |
| 5783 | } |
| 5784 | } |
| 5785 | } |
| 5786 | |
| 5787 | |
| 5788 | void MacroAssembler::LoadContext(Register dst, int context_chain_length) { |
| 5789 | if (context_chain_length > 0) { |
| 5790 | // Move up the chain of contexts to the context containing the slot. |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 5791 | lw(dst, MemOperand(cp, Context::SlotOffset(Context::PREVIOUS_INDEX))); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5792 | for (int i = 1; i < context_chain_length; i++) { |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 5793 | lw(dst, MemOperand(dst, Context::SlotOffset(Context::PREVIOUS_INDEX))); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5794 | } |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 5795 | } else { |
| 5796 | // Slot is in the current function context. Move it into the |
| 5797 | // destination register in case we store into it (the write barrier |
| 5798 | // cannot be allowed to destroy the context in esi). |
| 5799 | Move(dst, cp); |
| 5800 | } |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5801 | } |
| 5802 | |
| 5803 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5804 | void MacroAssembler::LoadTransitionedArrayMapConditional( |
| 5805 | ElementsKind expected_kind, |
| 5806 | ElementsKind transitioned_kind, |
| 5807 | Register map_in_out, |
| 5808 | Register scratch, |
| 5809 | Label* no_map_match) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 5810 | DCHECK(IsFastElementsKind(expected_kind)); |
| 5811 | DCHECK(IsFastElementsKind(transitioned_kind)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5812 | |
| 5813 | // Check that the function's map is the same as the expected cached map. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 5814 | lw(scratch, NativeContextMemOperand()); |
| 5815 | lw(at, ContextMemOperand(scratch, Context::ArrayMapIndex(expected_kind))); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5816 | Branch(no_map_match, ne, map_in_out, Operand(at)); |
| 5817 | |
| 5818 | // Use the transitioned cached map. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 5819 | lw(map_in_out, |
| 5820 | ContextMemOperand(scratch, Context::ArrayMapIndex(transitioned_kind))); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5821 | } |
| 5822 | |
| 5823 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 5824 | void MacroAssembler::LoadNativeContextSlot(int index, Register dst) { |
| 5825 | lw(dst, NativeContextMemOperand()); |
| 5826 | lw(dst, ContextMemOperand(dst, index)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5827 | } |
| 5828 | |
| 5829 | |
| 5830 | void MacroAssembler::LoadGlobalFunctionInitialMap(Register function, |
| 5831 | Register map, |
| 5832 | Register scratch) { |
| 5833 | // Load the initial map. The global functions all have initial maps. |
| 5834 | lw(map, FieldMemOperand(function, JSFunction::kPrototypeOrInitialMapOffset)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 5835 | if (emit_debug_code()) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5836 | Label ok, fail; |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 5837 | CheckMap(map, scratch, Heap::kMetaMapRootIndex, &fail, DO_SMI_CHECK); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5838 | Branch(&ok); |
| 5839 | bind(&fail); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5840 | Abort(kGlobalFunctionsMustHaveInitialMap); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5841 | bind(&ok); |
| 5842 | } |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 5843 | } |
| 5844 | |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 5845 | void MacroAssembler::StubPrologue(StackFrame::Type type) { |
| 5846 | li(at, Operand(Smi::FromInt(type))); |
| 5847 | PushCommonFrame(at); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5848 | } |
| 5849 | |
| 5850 | |
| 5851 | void MacroAssembler::Prologue(bool code_pre_aging) { |
| 5852 | PredictableCodeSizeScope predictible_code_size_scope( |
| 5853 | this, kNoCodeAgeSequenceLength); |
| 5854 | // The following three instructions must remain together and unmodified |
| 5855 | // for code aging to work properly. |
| 5856 | if (code_pre_aging) { |
| 5857 | // Pre-age the code. |
| 5858 | Code* stub = Code::GetPreAgedCodeAgeStub(isolate()); |
| 5859 | nop(Assembler::CODE_AGE_MARKER_NOP); |
| 5860 | // Load the stub address to t9 and call it, |
| 5861 | // GetCodeAgeAndParity() extracts the stub address from this instruction. |
| 5862 | li(t9, |
| 5863 | Operand(reinterpret_cast<uint32_t>(stub->instruction_start())), |
| 5864 | CONSTANT_SIZE); |
| 5865 | nop(); // Prevent jalr to jal optimization. |
| 5866 | jalr(t9, a0); |
| 5867 | nop(); // Branch delay slot nop. |
| 5868 | nop(); // Pad the empty space. |
| 5869 | } else { |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 5870 | PushStandardFrame(a1); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5871 | nop(Assembler::CODE_AGE_SEQUENCE_NOP); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5872 | } |
| 5873 | } |
| 5874 | |
| 5875 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 5876 | void MacroAssembler::EmitLoadTypeFeedbackVector(Register vector) { |
| 5877 | lw(vector, MemOperand(fp, JavaScriptFrameConstants::kFunctionOffset)); |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 5878 | lw(vector, FieldMemOperand(vector, JSFunction::kLiteralsOffset)); |
| 5879 | lw(vector, FieldMemOperand(vector, LiteralsArray::kFeedbackVectorOffset)); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 5880 | } |
| 5881 | |
| 5882 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 5883 | void MacroAssembler::EnterFrame(StackFrame::Type type, |
| 5884 | bool load_constant_pool_pointer_reg) { |
| 5885 | // Out-of-line constant pool not implemented on mips. |
| 5886 | UNREACHABLE(); |
| 5887 | } |
| 5888 | |
| 5889 | |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 5890 | void MacroAssembler::EnterFrame(StackFrame::Type type) { |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 5891 | int stack_offset, fp_offset; |
| 5892 | if (type == StackFrame::INTERNAL) { |
| 5893 | stack_offset = -4 * kPointerSize; |
| 5894 | fp_offset = 2 * kPointerSize; |
| 5895 | } else { |
| 5896 | stack_offset = -3 * kPointerSize; |
| 5897 | fp_offset = 1 * kPointerSize; |
| 5898 | } |
| 5899 | addiu(sp, sp, stack_offset); |
| 5900 | stack_offset = -stack_offset - kPointerSize; |
| 5901 | sw(ra, MemOperand(sp, stack_offset)); |
| 5902 | stack_offset -= kPointerSize; |
| 5903 | sw(fp, MemOperand(sp, stack_offset)); |
| 5904 | stack_offset -= kPointerSize; |
| 5905 | li(t9, Operand(Smi::FromInt(type))); |
| 5906 | sw(t9, MemOperand(sp, stack_offset)); |
| 5907 | if (type == StackFrame::INTERNAL) { |
| 5908 | DCHECK_EQ(stack_offset, kPointerSize); |
| 5909 | li(t9, Operand(CodeObject())); |
| 5910 | sw(t9, MemOperand(sp, 0)); |
| 5911 | } else { |
| 5912 | DCHECK_EQ(stack_offset, 0); |
| 5913 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5914 | // Adjust FP to point to saved FP. |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 5915 | Addu(fp, sp, Operand(fp_offset)); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 5916 | } |
| 5917 | |
| 5918 | |
| 5919 | void MacroAssembler::LeaveFrame(StackFrame::Type type) { |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 5920 | addiu(sp, fp, 2 * kPointerSize); |
| 5921 | lw(ra, MemOperand(fp, 1 * kPointerSize)); |
| 5922 | lw(fp, MemOperand(fp, 0 * kPointerSize)); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 5923 | } |
| 5924 | |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 5925 | void MacroAssembler::EnterExitFrame(bool save_doubles, int stack_space) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5926 | // Set up the frame structure on the stack. |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 5927 | STATIC_ASSERT(2 * kPointerSize == ExitFrameConstants::kCallerSPDisplacement); |
| 5928 | STATIC_ASSERT(1 * kPointerSize == ExitFrameConstants::kCallerPCOffset); |
| 5929 | STATIC_ASSERT(0 * kPointerSize == ExitFrameConstants::kCallerFPOffset); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 5930 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 5931 | // This is how the stack will look: |
| 5932 | // fp + 2 (==kCallerSPDisplacement) - old stack's end |
| 5933 | // [fp + 1 (==kCallerPCOffset)] - saved old ra |
| 5934 | // [fp + 0 (==kCallerFPOffset)] - saved old fp |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 5935 | // [fp - 1 StackFrame::EXIT Smi |
| 5936 | // [fp - 2 (==kSPOffset)] - sp of the called function |
| 5937 | // [fp - 3 (==kCodeOffset)] - CodeObject |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 5938 | // fp - (2 + stack_space + alignment) == sp == [fp - kSPOffset] - top of the |
| 5939 | // new stack (will contain saved ra) |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 5940 | |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 5941 | // Save registers and reserve room for saved entry sp and code object. |
| 5942 | addiu(sp, sp, -2 * kPointerSize - ExitFrameConstants::kFixedFrameSizeFromFp); |
| 5943 | sw(ra, MemOperand(sp, 4 * kPointerSize)); |
| 5944 | sw(fp, MemOperand(sp, 3 * kPointerSize)); |
| 5945 | li(at, Operand(Smi::FromInt(StackFrame::EXIT))); |
| 5946 | sw(at, MemOperand(sp, 2 * kPointerSize)); |
| 5947 | // Set up new frame pointer. |
| 5948 | addiu(fp, sp, ExitFrameConstants::kFixedFrameSizeFromFp); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 5949 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 5950 | if (emit_debug_code()) { |
| 5951 | sw(zero_reg, MemOperand(fp, ExitFrameConstants::kSPOffset)); |
| 5952 | } |
| 5953 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5954 | // Accessed from ExitFrame::code_slot. |
| 5955 | li(t8, Operand(CodeObject()), CONSTANT_SIZE); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 5956 | sw(t8, MemOperand(fp, ExitFrameConstants::kCodeOffset)); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 5957 | |
| 5958 | // Save the frame pointer and the context in top. |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 5959 | li(t8, Operand(ExternalReference(Isolate::kCEntryFPAddress, isolate()))); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5960 | sw(fp, MemOperand(t8)); |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 5961 | li(t8, Operand(ExternalReference(Isolate::kContextAddress, isolate()))); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5962 | sw(cp, MemOperand(t8)); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 5963 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 5964 | const int frame_alignment = MacroAssembler::ActivationFrameAlignment(); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5965 | if (save_doubles) { |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 5966 | // The stack must be allign to 0 modulo 8 for stores with sdc1. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5967 | DCHECK(kDoubleSize == frame_alignment); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 5968 | if (frame_alignment > 0) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5969 | DCHECK(base::bits::IsPowerOfTwo32(frame_alignment)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 5970 | And(sp, sp, Operand(-frame_alignment)); // Align stack. |
| 5971 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5972 | int space = FPURegister::kMaxNumRegisters * kDoubleSize; |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5973 | Subu(sp, sp, Operand(space)); |
| 5974 | // Remember: we only need to save every 2nd double FPU value. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5975 | for (int i = 0; i < FPURegister::kMaxNumRegisters; i+=2) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5976 | FPURegister reg = FPURegister::from_code(i); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 5977 | sdc1(reg, MemOperand(sp, i * kDoubleSize)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5978 | } |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5979 | } |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 5980 | |
| 5981 | // Reserve place for the return address, stack space and an optional slot |
| 5982 | // (used by the DirectCEntryStub to hold the return value if a struct is |
| 5983 | // returned) and align the frame preparing for calling the runtime function. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5984 | DCHECK(stack_space >= 0); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 5985 | Subu(sp, sp, Operand((stack_space + 2) * kPointerSize)); |
| 5986 | if (frame_alignment > 0) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5987 | DCHECK(base::bits::IsPowerOfTwo32(frame_alignment)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 5988 | And(sp, sp, Operand(-frame_alignment)); // Align stack. |
| 5989 | } |
| 5990 | |
| 5991 | // Set the exit frame sp value to point just before the return address |
| 5992 | // location. |
| 5993 | addiu(at, sp, kPointerSize); |
| 5994 | sw(at, MemOperand(fp, ExitFrameConstants::kSPOffset)); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 5995 | } |
| 5996 | |
| 5997 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 5998 | void MacroAssembler::LeaveExitFrame(bool save_doubles, Register argument_count, |
| 5999 | bool restore_context, bool do_return, |
| 6000 | bool argument_count_is_length) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 6001 | // Optionally restore all double registers. |
| 6002 | if (save_doubles) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 6003 | // Remember: we only need to restore every 2nd double FPU value. |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 6004 | lw(t8, MemOperand(fp, ExitFrameConstants::kSPOffset)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 6005 | for (int i = 0; i < FPURegister::kMaxNumRegisters; i+=2) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 6006 | FPURegister reg = FPURegister::from_code(i); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 6007 | ldc1(reg, MemOperand(t8, i * kDoubleSize + kPointerSize)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 6008 | } |
| 6009 | } |
| 6010 | |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 6011 | // Clear top frame. |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 6012 | li(t8, Operand(ExternalReference(Isolate::kCEntryFPAddress, isolate()))); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 6013 | sw(zero_reg, MemOperand(t8)); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 6014 | |
| 6015 | // Restore current context from top and clear it in debug mode. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 6016 | if (restore_context) { |
| 6017 | li(t8, Operand(ExternalReference(Isolate::kContextAddress, isolate()))); |
| 6018 | lw(cp, MemOperand(t8)); |
| 6019 | } |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 6020 | #ifdef DEBUG |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 6021 | li(t8, Operand(ExternalReference(Isolate::kContextAddress, isolate()))); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 6022 | sw(a3, MemOperand(t8)); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 6023 | #endif |
| 6024 | |
| 6025 | // Pop the arguments, restore registers, and return. |
| 6026 | mov(sp, fp); // Respect ABI stack constraint. |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 6027 | lw(fp, MemOperand(sp, ExitFrameConstants::kCallerFPOffset)); |
| 6028 | lw(ra, MemOperand(sp, ExitFrameConstants::kCallerPCOffset)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 6029 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 6030 | if (argument_count.is_valid()) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 6031 | if (argument_count_is_length) { |
| 6032 | addu(sp, sp, argument_count); |
| 6033 | } else { |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 6034 | Lsa(sp, sp, argument_count, kPointerSizeLog2, t8); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 6035 | } |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 6036 | } |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 6037 | |
| 6038 | if (do_return) { |
| 6039 | Ret(USE_DELAY_SLOT); |
| 6040 | // If returning, the instruction in the delay slot will be the addiu below. |
| 6041 | } |
| 6042 | addiu(sp, sp, 8); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 6043 | } |
| 6044 | |
| 6045 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 6046 | void MacroAssembler::InitializeNewString(Register string, |
| 6047 | Register length, |
| 6048 | Heap::RootListIndex map_index, |
| 6049 | Register scratch1, |
| 6050 | Register scratch2) { |
| 6051 | sll(scratch1, length, kSmiTagSize); |
| 6052 | LoadRoot(scratch2, map_index); |
| 6053 | sw(scratch1, FieldMemOperand(string, String::kLengthOffset)); |
| 6054 | li(scratch1, Operand(String::kEmptyHashField)); |
| 6055 | sw(scratch2, FieldMemOperand(string, HeapObject::kMapOffset)); |
| 6056 | sw(scratch1, FieldMemOperand(string, String::kHashFieldOffset)); |
| 6057 | } |
| 6058 | |
| 6059 | |
| 6060 | int MacroAssembler::ActivationFrameAlignment() { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 6061 | #if V8_HOST_ARCH_MIPS |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 6062 | // Running on the real platform. Use the alignment as mandated by the local |
| 6063 | // environment. |
| 6064 | // Note: This will break if we ever start generating snapshots on one Mips |
| 6065 | // platform for another Mips platform with a different alignment. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 6066 | return base::OS::ActivationFrameAlignment(); |
| 6067 | #else // V8_HOST_ARCH_MIPS |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 6068 | // If we are using the simulator then we should always align to the expected |
| 6069 | // alignment. As the simulator is used to generate snapshots we do not know |
| 6070 | // if the target platform will need alignment, so this is controlled from a |
| 6071 | // flag. |
| 6072 | return FLAG_sim_stack_alignment; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 6073 | #endif // V8_HOST_ARCH_MIPS |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 6074 | } |
| 6075 | |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 6076 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 6077 | void MacroAssembler::AssertStackIsAligned() { |
| 6078 | if (emit_debug_code()) { |
| 6079 | const int frame_alignment = ActivationFrameAlignment(); |
| 6080 | const int frame_alignment_mask = frame_alignment - 1; |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 6081 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 6082 | if (frame_alignment > kPointerSize) { |
| 6083 | Label alignment_as_expected; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 6084 | DCHECK(base::bits::IsPowerOfTwo32(frame_alignment)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 6085 | andi(at, sp, frame_alignment_mask); |
| 6086 | Branch(&alignment_as_expected, eq, at, Operand(zero_reg)); |
| 6087 | // Don't use Check here, as it will call Runtime_Abort re-entering here. |
| 6088 | stop("Unexpected stack alignment"); |
| 6089 | bind(&alignment_as_expected); |
| 6090 | } |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 6091 | } |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 6092 | } |
| 6093 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 6094 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 6095 | void MacroAssembler::JumpIfNotPowerOfTwoOrZero( |
| 6096 | Register reg, |
| 6097 | Register scratch, |
| 6098 | Label* not_power_of_two_or_zero) { |
| 6099 | Subu(scratch, reg, Operand(1)); |
| 6100 | Branch(USE_DELAY_SLOT, not_power_of_two_or_zero, lt, |
| 6101 | scratch, Operand(zero_reg)); |
| 6102 | and_(at, scratch, reg); // In the delay slot. |
| 6103 | Branch(not_power_of_two_or_zero, ne, at, Operand(zero_reg)); |
| 6104 | } |
| 6105 | |
| 6106 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 6107 | void MacroAssembler::SmiTagCheckOverflow(Register reg, Register overflow) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 6108 | DCHECK(!reg.is(overflow)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 6109 | mov(overflow, reg); // Save original value. |
| 6110 | SmiTag(reg); |
| 6111 | xor_(overflow, overflow, reg); // Overflow if (value ^ 2 * value) < 0. |
| 6112 | } |
| 6113 | |
| 6114 | |
| 6115 | void MacroAssembler::SmiTagCheckOverflow(Register dst, |
| 6116 | Register src, |
| 6117 | Register overflow) { |
| 6118 | if (dst.is(src)) { |
| 6119 | // Fall back to slower case. |
| 6120 | SmiTagCheckOverflow(dst, overflow); |
| 6121 | } else { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 6122 | DCHECK(!dst.is(src)); |
| 6123 | DCHECK(!dst.is(overflow)); |
| 6124 | DCHECK(!src.is(overflow)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 6125 | SmiTag(dst, src); |
| 6126 | xor_(overflow, dst, src); // Overflow if (value ^ 2 * value) < 0. |
| 6127 | } |
| 6128 | } |
| 6129 | |
| 6130 | |
| 6131 | void MacroAssembler::UntagAndJumpIfSmi(Register dst, |
| 6132 | Register src, |
| 6133 | Label* smi_case) { |
| 6134 | JumpIfSmi(src, smi_case, at, USE_DELAY_SLOT); |
| 6135 | SmiUntag(dst, src); |
| 6136 | } |
| 6137 | |
| 6138 | |
| 6139 | void MacroAssembler::UntagAndJumpIfNotSmi(Register dst, |
| 6140 | Register src, |
| 6141 | Label* non_smi_case) { |
| 6142 | JumpIfNotSmi(src, non_smi_case, at, USE_DELAY_SLOT); |
| 6143 | SmiUntag(dst, src); |
| 6144 | } |
| 6145 | |
| 6146 | void MacroAssembler::JumpIfSmi(Register value, |
| 6147 | Label* smi_label, |
| 6148 | Register scratch, |
| 6149 | BranchDelaySlot bd) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 6150 | DCHECK_EQ(0, kSmiTag); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 6151 | andi(scratch, value, kSmiTagMask); |
| 6152 | Branch(bd, smi_label, eq, scratch, Operand(zero_reg)); |
| 6153 | } |
| 6154 | |
| 6155 | void MacroAssembler::JumpIfNotSmi(Register value, |
| 6156 | Label* not_smi_label, |
| 6157 | Register scratch, |
| 6158 | BranchDelaySlot bd) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 6159 | DCHECK_EQ(0, kSmiTag); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 6160 | andi(scratch, value, kSmiTagMask); |
| 6161 | Branch(bd, not_smi_label, ne, scratch, Operand(zero_reg)); |
| 6162 | } |
| 6163 | |
| 6164 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 6165 | void MacroAssembler::JumpIfNotBothSmi(Register reg1, |
| 6166 | Register reg2, |
| 6167 | Label* on_not_both_smi) { |
| 6168 | STATIC_ASSERT(kSmiTag == 0); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 6169 | DCHECK_EQ(1, kSmiTagMask); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 6170 | or_(at, reg1, reg2); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 6171 | JumpIfNotSmi(at, on_not_both_smi); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 6172 | } |
| 6173 | |
| 6174 | |
| 6175 | void MacroAssembler::JumpIfEitherSmi(Register reg1, |
| 6176 | Register reg2, |
| 6177 | Label* on_either_smi) { |
| 6178 | STATIC_ASSERT(kSmiTag == 0); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 6179 | DCHECK_EQ(1, kSmiTagMask); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 6180 | // Both Smi tags must be 1 (not Smi). |
| 6181 | and_(at, reg1, reg2); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 6182 | JumpIfSmi(at, on_either_smi); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 6183 | } |
| 6184 | |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 6185 | void MacroAssembler::AssertNotNumber(Register object) { |
| 6186 | if (emit_debug_code()) { |
| 6187 | STATIC_ASSERT(kSmiTag == 0); |
| 6188 | andi(at, object, kSmiTagMask); |
| 6189 | Check(ne, kOperandIsANumber, at, Operand(zero_reg)); |
| 6190 | GetObjectType(object, t8, t8); |
| 6191 | Check(ne, kOperandIsNotANumber, t8, Operand(HEAP_NUMBER_TYPE)); |
| 6192 | } |
| 6193 | } |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 6194 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 6195 | void MacroAssembler::AssertNotSmi(Register object) { |
| 6196 | if (emit_debug_code()) { |
| 6197 | STATIC_ASSERT(kSmiTag == 0); |
| 6198 | andi(at, object, kSmiTagMask); |
| 6199 | Check(ne, kOperandIsASmi, at, Operand(zero_reg)); |
| 6200 | } |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 6201 | } |
| 6202 | |
| 6203 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 6204 | void MacroAssembler::AssertSmi(Register object) { |
| 6205 | if (emit_debug_code()) { |
| 6206 | STATIC_ASSERT(kSmiTag == 0); |
| 6207 | andi(at, object, kSmiTagMask); |
| 6208 | Check(eq, kOperandIsASmi, at, Operand(zero_reg)); |
| 6209 | } |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 6210 | } |
| 6211 | |
| 6212 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 6213 | void MacroAssembler::AssertString(Register object) { |
| 6214 | if (emit_debug_code()) { |
| 6215 | STATIC_ASSERT(kSmiTag == 0); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 6216 | SmiTst(object, t8); |
| 6217 | Check(ne, kOperandIsASmiAndNotAString, t8, Operand(zero_reg)); |
| 6218 | GetObjectType(object, t8, t8); |
| 6219 | Check(lo, kOperandIsNotAString, t8, Operand(FIRST_NONSTRING_TYPE)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 6220 | } |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 6221 | } |
| 6222 | |
| 6223 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 6224 | void MacroAssembler::AssertName(Register object) { |
| 6225 | if (emit_debug_code()) { |
| 6226 | STATIC_ASSERT(kSmiTag == 0); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 6227 | SmiTst(object, t8); |
| 6228 | Check(ne, kOperandIsASmiAndNotAName, t8, Operand(zero_reg)); |
| 6229 | GetObjectType(object, t8, t8); |
| 6230 | Check(le, kOperandIsNotAName, t8, Operand(LAST_NAME_TYPE)); |
| 6231 | } |
| 6232 | } |
| 6233 | |
| 6234 | |
| 6235 | void MacroAssembler::AssertFunction(Register object) { |
| 6236 | if (emit_debug_code()) { |
| 6237 | STATIC_ASSERT(kSmiTag == 0); |
| 6238 | SmiTst(object, t8); |
| 6239 | Check(ne, kOperandIsASmiAndNotAFunction, t8, Operand(zero_reg)); |
| 6240 | GetObjectType(object, t8, t8); |
| 6241 | Check(eq, kOperandIsNotAFunction, t8, Operand(JS_FUNCTION_TYPE)); |
| 6242 | } |
| 6243 | } |
| 6244 | |
| 6245 | |
| 6246 | void MacroAssembler::AssertBoundFunction(Register object) { |
| 6247 | if (emit_debug_code()) { |
| 6248 | STATIC_ASSERT(kSmiTag == 0); |
| 6249 | SmiTst(object, t8); |
| 6250 | Check(ne, kOperandIsASmiAndNotABoundFunction, t8, Operand(zero_reg)); |
| 6251 | GetObjectType(object, t8, t8); |
| 6252 | Check(eq, kOperandIsNotABoundFunction, t8, Operand(JS_BOUND_FUNCTION_TYPE)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 6253 | } |
| 6254 | } |
| 6255 | |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 6256 | void MacroAssembler::AssertGeneratorObject(Register object) { |
| 6257 | if (emit_debug_code()) { |
| 6258 | STATIC_ASSERT(kSmiTag == 0); |
| 6259 | SmiTst(object, t8); |
| 6260 | Check(ne, kOperandIsASmiAndNotAGeneratorObject, t8, Operand(zero_reg)); |
| 6261 | GetObjectType(object, t8, t8); |
| 6262 | Check(eq, kOperandIsNotAGeneratorObject, t8, |
| 6263 | Operand(JS_GENERATOR_OBJECT_TYPE)); |
| 6264 | } |
| 6265 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 6266 | |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 6267 | void MacroAssembler::AssertReceiver(Register object) { |
| 6268 | if (emit_debug_code()) { |
| 6269 | STATIC_ASSERT(kSmiTag == 0); |
| 6270 | SmiTst(object, t8); |
| 6271 | Check(ne, kOperandIsASmiAndNotAReceiver, t8, Operand(zero_reg)); |
| 6272 | GetObjectType(object, t8, t8); |
| 6273 | Check(ge, kOperandIsNotAReceiver, t8, Operand(FIRST_JS_RECEIVER_TYPE)); |
| 6274 | } |
| 6275 | } |
| 6276 | |
| 6277 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 6278 | void MacroAssembler::AssertUndefinedOrAllocationSite(Register object, |
| 6279 | Register scratch) { |
| 6280 | if (emit_debug_code()) { |
| 6281 | Label done_checking; |
| 6282 | AssertNotSmi(object); |
| 6283 | LoadRoot(scratch, Heap::kUndefinedValueRootIndex); |
| 6284 | Branch(&done_checking, eq, object, Operand(scratch)); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 6285 | lw(t8, FieldMemOperand(object, HeapObject::kMapOffset)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 6286 | LoadRoot(scratch, Heap::kAllocationSiteMapRootIndex); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 6287 | Assert(eq, kExpectedUndefinedOrCell, t8, Operand(scratch)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 6288 | bind(&done_checking); |
| 6289 | } |
| 6290 | } |
| 6291 | |
| 6292 | |
| 6293 | void MacroAssembler::AssertIsRoot(Register reg, Heap::RootListIndex index) { |
| 6294 | if (emit_debug_code()) { |
| 6295 | DCHECK(!reg.is(at)); |
| 6296 | LoadRoot(at, index); |
| 6297 | Check(eq, kHeapNumberMapRegisterClobbered, reg, Operand(at)); |
| 6298 | } |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 6299 | } |
| 6300 | |
| 6301 | |
| 6302 | void MacroAssembler::JumpIfNotHeapNumber(Register object, |
| 6303 | Register heap_number_map, |
| 6304 | Register scratch, |
| 6305 | Label* on_not_heap_number) { |
| 6306 | lw(scratch, FieldMemOperand(object, HeapObject::kMapOffset)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 6307 | AssertIsRoot(heap_number_map, Heap::kHeapNumberMapRootIndex); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 6308 | Branch(on_not_heap_number, ne, scratch, Operand(heap_number_map)); |
| 6309 | } |
| 6310 | |
| 6311 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 6312 | void MacroAssembler::JumpIfNonSmisNotBothSequentialOneByteStrings( |
| 6313 | Register first, Register second, Register scratch1, Register scratch2, |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 6314 | Label* failure) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 6315 | // Test that both first and second are sequential one-byte strings. |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 6316 | // Assume that they are non-smis. |
| 6317 | lw(scratch1, FieldMemOperand(first, HeapObject::kMapOffset)); |
| 6318 | lw(scratch2, FieldMemOperand(second, HeapObject::kMapOffset)); |
| 6319 | lbu(scratch1, FieldMemOperand(scratch1, Map::kInstanceTypeOffset)); |
| 6320 | lbu(scratch2, FieldMemOperand(scratch2, Map::kInstanceTypeOffset)); |
| 6321 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 6322 | JumpIfBothInstanceTypesAreNotSequentialOneByte(scratch1, scratch2, scratch1, |
| 6323 | scratch2, failure); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 6324 | } |
| 6325 | |
| 6326 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 6327 | void MacroAssembler::JumpIfNotBothSequentialOneByteStrings(Register first, |
| 6328 | Register second, |
| 6329 | Register scratch1, |
| 6330 | Register scratch2, |
| 6331 | Label* failure) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 6332 | // Check that neither is a smi. |
| 6333 | STATIC_ASSERT(kSmiTag == 0); |
| 6334 | And(scratch1, first, Operand(second)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 6335 | JumpIfSmi(scratch1, failure); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 6336 | JumpIfNonSmisNotBothSequentialOneByteStrings(first, second, scratch1, |
| 6337 | scratch2, failure); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 6338 | } |
| 6339 | |
| 6340 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 6341 | void MacroAssembler::JumpIfBothInstanceTypesAreNotSequentialOneByte( |
| 6342 | Register first, Register second, Register scratch1, Register scratch2, |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 6343 | Label* failure) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 6344 | const int kFlatOneByteStringMask = |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 6345 | kIsNotStringMask | kStringEncodingMask | kStringRepresentationMask; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 6346 | const int kFlatOneByteStringTag = |
| 6347 | kStringTag | kOneByteStringTag | kSeqStringTag; |
| 6348 | DCHECK(kFlatOneByteStringTag <= 0xffff); // Ensure this fits 16-bit immed. |
| 6349 | andi(scratch1, first, kFlatOneByteStringMask); |
| 6350 | Branch(failure, ne, scratch1, Operand(kFlatOneByteStringTag)); |
| 6351 | andi(scratch2, second, kFlatOneByteStringMask); |
| 6352 | Branch(failure, ne, scratch2, Operand(kFlatOneByteStringTag)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 6353 | } |
| 6354 | |
| 6355 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 6356 | void MacroAssembler::JumpIfInstanceTypeIsNotSequentialOneByte(Register type, |
| 6357 | Register scratch, |
| 6358 | Label* failure) { |
| 6359 | const int kFlatOneByteStringMask = |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 6360 | kIsNotStringMask | kStringEncodingMask | kStringRepresentationMask; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 6361 | const int kFlatOneByteStringTag = |
| 6362 | kStringTag | kOneByteStringTag | kSeqStringTag; |
| 6363 | And(scratch, type, Operand(kFlatOneByteStringMask)); |
| 6364 | Branch(failure, ne, scratch, Operand(kFlatOneByteStringTag)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 6365 | } |
| 6366 | |
| 6367 | |
| 6368 | static const int kRegisterPassedArguments = 4; |
| 6369 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 6370 | int MacroAssembler::CalculateStackPassedWords(int num_reg_arguments, |
| 6371 | int num_double_arguments) { |
| 6372 | int stack_passed_words = 0; |
| 6373 | num_reg_arguments += 2 * num_double_arguments; |
| 6374 | |
| 6375 | // Up to four simple arguments are passed in registers a0..a3. |
| 6376 | if (num_reg_arguments > kRegisterPassedArguments) { |
| 6377 | stack_passed_words += num_reg_arguments - kRegisterPassedArguments; |
| 6378 | } |
| 6379 | stack_passed_words += kCArgSlotCount; |
| 6380 | return stack_passed_words; |
| 6381 | } |
| 6382 | |
| 6383 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 6384 | void MacroAssembler::EmitSeqStringSetCharCheck(Register string, |
| 6385 | Register index, |
| 6386 | Register value, |
| 6387 | Register scratch, |
| 6388 | uint32_t encoding_mask) { |
| 6389 | Label is_object; |
| 6390 | SmiTst(string, at); |
| 6391 | Check(ne, kNonObject, at, Operand(zero_reg)); |
| 6392 | |
| 6393 | lw(at, FieldMemOperand(string, HeapObject::kMapOffset)); |
| 6394 | lbu(at, FieldMemOperand(at, Map::kInstanceTypeOffset)); |
| 6395 | |
| 6396 | andi(at, at, kStringRepresentationMask | kStringEncodingMask); |
| 6397 | li(scratch, Operand(encoding_mask)); |
| 6398 | Check(eq, kUnexpectedStringType, at, Operand(scratch)); |
| 6399 | |
| 6400 | // The index is assumed to be untagged coming in, tag it to compare with the |
| 6401 | // string length without using a temp register, it is restored at the end of |
| 6402 | // this function. |
| 6403 | Label index_tag_ok, index_tag_bad; |
| 6404 | TrySmiTag(index, scratch, &index_tag_bad); |
| 6405 | Branch(&index_tag_ok); |
| 6406 | bind(&index_tag_bad); |
| 6407 | Abort(kIndexIsTooLarge); |
| 6408 | bind(&index_tag_ok); |
| 6409 | |
| 6410 | lw(at, FieldMemOperand(string, String::kLengthOffset)); |
| 6411 | Check(lt, kIndexIsTooLarge, index, Operand(at)); |
| 6412 | |
| 6413 | DCHECK(Smi::FromInt(0) == 0); |
| 6414 | Check(ge, kIndexIsNegative, index, Operand(zero_reg)); |
| 6415 | |
| 6416 | SmiUntag(index, index); |
| 6417 | } |
| 6418 | |
| 6419 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 6420 | void MacroAssembler::PrepareCallCFunction(int num_reg_arguments, |
| 6421 | int num_double_arguments, |
| 6422 | Register scratch) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 6423 | int frame_alignment = ActivationFrameAlignment(); |
| 6424 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 6425 | // Up to four simple arguments are passed in registers a0..a3. |
| 6426 | // Those four arguments must have reserved argument slots on the stack for |
| 6427 | // mips, even though those argument slots are not normally used. |
| 6428 | // Remaining arguments are pushed on the stack, above (higher address than) |
| 6429 | // the argument slots. |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 6430 | int stack_passed_arguments = CalculateStackPassedWords( |
| 6431 | num_reg_arguments, num_double_arguments); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 6432 | if (frame_alignment > kPointerSize) { |
| 6433 | // Make stack end at alignment and make room for num_arguments - 4 words |
| 6434 | // and the original value of sp. |
| 6435 | mov(scratch, sp); |
| 6436 | Subu(sp, sp, Operand((stack_passed_arguments + 1) * kPointerSize)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 6437 | DCHECK(base::bits::IsPowerOfTwo32(frame_alignment)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 6438 | And(sp, sp, Operand(-frame_alignment)); |
| 6439 | sw(scratch, MemOperand(sp, stack_passed_arguments * kPointerSize)); |
| 6440 | } else { |
| 6441 | Subu(sp, sp, Operand(stack_passed_arguments * kPointerSize)); |
| 6442 | } |
| 6443 | } |
| 6444 | |
| 6445 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 6446 | void MacroAssembler::PrepareCallCFunction(int num_reg_arguments, |
| 6447 | Register scratch) { |
| 6448 | PrepareCallCFunction(num_reg_arguments, 0, scratch); |
| 6449 | } |
| 6450 | |
| 6451 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 6452 | void MacroAssembler::CallCFunction(ExternalReference function, |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 6453 | int num_reg_arguments, |
| 6454 | int num_double_arguments) { |
| 6455 | li(t8, Operand(function)); |
| 6456 | CallCFunctionHelper(t8, num_reg_arguments, num_double_arguments); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 6457 | } |
| 6458 | |
| 6459 | |
| 6460 | void MacroAssembler::CallCFunction(Register function, |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 6461 | int num_reg_arguments, |
| 6462 | int num_double_arguments) { |
| 6463 | CallCFunctionHelper(function, num_reg_arguments, num_double_arguments); |
| 6464 | } |
| 6465 | |
| 6466 | |
| 6467 | void MacroAssembler::CallCFunction(ExternalReference function, |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 6468 | int num_arguments) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 6469 | CallCFunction(function, num_arguments, 0); |
| 6470 | } |
| 6471 | |
| 6472 | |
| 6473 | void MacroAssembler::CallCFunction(Register function, |
| 6474 | int num_arguments) { |
| 6475 | CallCFunction(function, num_arguments, 0); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 6476 | } |
| 6477 | |
| 6478 | |
| 6479 | void MacroAssembler::CallCFunctionHelper(Register function, |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 6480 | int num_reg_arguments, |
| 6481 | int num_double_arguments) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 6482 | DCHECK(has_frame()); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 6483 | // Make sure that the stack is aligned before calling a C function unless |
| 6484 | // running in the simulator. The simulator has its own alignment check which |
| 6485 | // provides more information. |
| 6486 | // The argument stots are presumed to have been set up by |
| 6487 | // PrepareCallCFunction. The C function must be called via t9, for mips ABI. |
| 6488 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 6489 | #if V8_HOST_ARCH_MIPS |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 6490 | if (emit_debug_code()) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 6491 | int frame_alignment = base::OS::ActivationFrameAlignment(); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 6492 | int frame_alignment_mask = frame_alignment - 1; |
| 6493 | if (frame_alignment > kPointerSize) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 6494 | DCHECK(base::bits::IsPowerOfTwo32(frame_alignment)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 6495 | Label alignment_as_expected; |
| 6496 | And(at, sp, Operand(frame_alignment_mask)); |
| 6497 | Branch(&alignment_as_expected, eq, at, Operand(zero_reg)); |
| 6498 | // Don't use Check here, as it will call Runtime_Abort possibly |
| 6499 | // re-entering here. |
| 6500 | stop("Unexpected alignment in CallCFunction"); |
| 6501 | bind(&alignment_as_expected); |
| 6502 | } |
| 6503 | } |
| 6504 | #endif // V8_HOST_ARCH_MIPS |
| 6505 | |
| 6506 | // Just call directly. The function called cannot cause a GC, or |
| 6507 | // allow preemption, so the return address in the link register |
| 6508 | // stays correct. |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 6509 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 6510 | if (!function.is(t9)) { |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 6511 | mov(t9, function); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 6512 | function = t9; |
| 6513 | } |
| 6514 | |
| 6515 | Call(function); |
| 6516 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 6517 | int stack_passed_arguments = CalculateStackPassedWords( |
| 6518 | num_reg_arguments, num_double_arguments); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 6519 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 6520 | if (base::OS::ActivationFrameAlignment() > kPointerSize) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 6521 | lw(sp, MemOperand(sp, stack_passed_arguments * kPointerSize)); |
| 6522 | } else { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 6523 | Addu(sp, sp, Operand(stack_passed_arguments * kPointerSize)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 6524 | } |
| 6525 | } |
| 6526 | |
| 6527 | |
| 6528 | #undef BRANCH_ARGS_CHECK |
| 6529 | |
| 6530 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 6531 | void MacroAssembler::CheckPageFlag( |
| 6532 | Register object, |
| 6533 | Register scratch, |
| 6534 | int mask, |
| 6535 | Condition cc, |
| 6536 | Label* condition_met) { |
| 6537 | And(scratch, object, Operand(~Page::kPageAlignmentMask)); |
| 6538 | lw(scratch, MemOperand(scratch, MemoryChunk::kFlagsOffset)); |
| 6539 | And(scratch, scratch, Operand(mask)); |
| 6540 | Branch(condition_met, cc, scratch, Operand(zero_reg)); |
| 6541 | } |
| 6542 | |
| 6543 | |
| 6544 | void MacroAssembler::JumpIfBlack(Register object, |
| 6545 | Register scratch0, |
| 6546 | Register scratch1, |
| 6547 | Label* on_black) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 6548 | HasColor(object, scratch0, scratch1, on_black, 1, 1); // kBlackBitPattern. |
| 6549 | DCHECK(strcmp(Marking::kBlackBitPattern, "11") == 0); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 6550 | } |
| 6551 | |
| 6552 | |
| 6553 | void MacroAssembler::HasColor(Register object, |
| 6554 | Register bitmap_scratch, |
| 6555 | Register mask_scratch, |
| 6556 | Label* has_color, |
| 6557 | int first_bit, |
| 6558 | int second_bit) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 6559 | DCHECK(!AreAliased(object, bitmap_scratch, mask_scratch, t8)); |
| 6560 | DCHECK(!AreAliased(object, bitmap_scratch, mask_scratch, t9)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 6561 | |
| 6562 | GetMarkBits(object, bitmap_scratch, mask_scratch); |
| 6563 | |
| 6564 | Label other_color, word_boundary; |
| 6565 | lw(t9, MemOperand(bitmap_scratch, MemoryChunk::kHeaderSize)); |
| 6566 | And(t8, t9, Operand(mask_scratch)); |
| 6567 | Branch(&other_color, first_bit == 1 ? eq : ne, t8, Operand(zero_reg)); |
| 6568 | // Shift left 1 by adding. |
| 6569 | Addu(mask_scratch, mask_scratch, Operand(mask_scratch)); |
| 6570 | Branch(&word_boundary, eq, mask_scratch, Operand(zero_reg)); |
| 6571 | And(t8, t9, Operand(mask_scratch)); |
| 6572 | Branch(has_color, second_bit == 1 ? ne : eq, t8, Operand(zero_reg)); |
| 6573 | jmp(&other_color); |
| 6574 | |
| 6575 | bind(&word_boundary); |
| 6576 | lw(t9, MemOperand(bitmap_scratch, MemoryChunk::kHeaderSize + kPointerSize)); |
| 6577 | And(t9, t9, Operand(1)); |
| 6578 | Branch(has_color, second_bit == 1 ? ne : eq, t9, Operand(zero_reg)); |
| 6579 | bind(&other_color); |
| 6580 | } |
| 6581 | |
| 6582 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 6583 | void MacroAssembler::GetMarkBits(Register addr_reg, |
| 6584 | Register bitmap_reg, |
| 6585 | Register mask_reg) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 6586 | DCHECK(!AreAliased(addr_reg, bitmap_reg, mask_reg, no_reg)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 6587 | And(bitmap_reg, addr_reg, Operand(~Page::kPageAlignmentMask)); |
| 6588 | Ext(mask_reg, addr_reg, kPointerSizeLog2, Bitmap::kBitsPerCellLog2); |
| 6589 | const int kLowBits = kPointerSizeLog2 + Bitmap::kBitsPerCellLog2; |
| 6590 | Ext(t8, addr_reg, kLowBits, kPageSizeBits - kLowBits); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 6591 | Lsa(bitmap_reg, bitmap_reg, t8, kPointerSizeLog2, t8); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 6592 | li(t8, Operand(1)); |
| 6593 | sllv(mask_reg, t8, mask_reg); |
| 6594 | } |
| 6595 | |
| 6596 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 6597 | void MacroAssembler::JumpIfWhite(Register value, Register bitmap_scratch, |
| 6598 | Register mask_scratch, Register load_scratch, |
| 6599 | Label* value_is_white) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 6600 | DCHECK(!AreAliased(value, bitmap_scratch, mask_scratch, t8)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 6601 | GetMarkBits(value, bitmap_scratch, mask_scratch); |
| 6602 | |
| 6603 | // If the value is black or grey we don't need to do anything. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 6604 | DCHECK(strcmp(Marking::kWhiteBitPattern, "00") == 0); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 6605 | DCHECK(strcmp(Marking::kBlackBitPattern, "11") == 0); |
| 6606 | DCHECK(strcmp(Marking::kGreyBitPattern, "10") == 0); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 6607 | DCHECK(strcmp(Marking::kImpossibleBitPattern, "01") == 0); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 6608 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 6609 | // Since both black and grey have a 1 in the first position and white does |
| 6610 | // not have a 1 there we only need to check one bit. |
| 6611 | lw(load_scratch, MemOperand(bitmap_scratch, MemoryChunk::kHeaderSize)); |
| 6612 | And(t8, mask_scratch, load_scratch); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 6613 | Branch(value_is_white, eq, t8, Operand(zero_reg)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 6614 | } |
| 6615 | |
| 6616 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 6617 | void MacroAssembler::LoadInstanceDescriptors(Register map, |
| 6618 | Register descriptors) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 6619 | lw(descriptors, FieldMemOperand(map, Map::kDescriptorsOffset)); |
| 6620 | } |
| 6621 | |
| 6622 | |
| 6623 | void MacroAssembler::NumberOfOwnDescriptors(Register dst, Register map) { |
| 6624 | lw(dst, FieldMemOperand(map, Map::kBitField3Offset)); |
| 6625 | DecodeField<Map::NumberOfOwnDescriptorsBits>(dst); |
| 6626 | } |
| 6627 | |
| 6628 | |
| 6629 | void MacroAssembler::EnumLength(Register dst, Register map) { |
| 6630 | STATIC_ASSERT(Map::EnumLengthBits::kShift == 0); |
| 6631 | lw(dst, FieldMemOperand(map, Map::kBitField3Offset)); |
| 6632 | And(dst, dst, Operand(Map::EnumLengthBits::kMask)); |
| 6633 | SmiTag(dst); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 6634 | } |
| 6635 | |
| 6636 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 6637 | void MacroAssembler::LoadAccessor(Register dst, Register holder, |
| 6638 | int accessor_index, |
| 6639 | AccessorComponent accessor) { |
| 6640 | lw(dst, FieldMemOperand(holder, HeapObject::kMapOffset)); |
| 6641 | LoadInstanceDescriptors(dst, dst); |
| 6642 | lw(dst, |
| 6643 | FieldMemOperand(dst, DescriptorArray::GetValueOffset(accessor_index))); |
| 6644 | int offset = accessor == ACCESSOR_GETTER ? AccessorPair::kGetterOffset |
| 6645 | : AccessorPair::kSetterOffset; |
| 6646 | lw(dst, FieldMemOperand(dst, offset)); |
| 6647 | } |
| 6648 | |
| 6649 | |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 6650 | void MacroAssembler::CheckEnumCache(Label* call_runtime) { |
| 6651 | Register null_value = t1; |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 6652 | Register empty_fixed_array_value = t2; |
| 6653 | LoadRoot(empty_fixed_array_value, Heap::kEmptyFixedArrayRootIndex); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 6654 | Label next, start; |
| 6655 | mov(a2, a0); |
| 6656 | |
| 6657 | // Check if the enum length field is properly initialized, indicating that |
| 6658 | // there is an enum cache. |
| 6659 | lw(a1, FieldMemOperand(a2, HeapObject::kMapOffset)); |
| 6660 | |
| 6661 | EnumLength(a3, a1); |
| 6662 | Branch( |
| 6663 | call_runtime, eq, a3, Operand(Smi::FromInt(kInvalidEnumCacheSentinel))); |
| 6664 | |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 6665 | LoadRoot(null_value, Heap::kNullValueRootIndex); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 6666 | jmp(&start); |
| 6667 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 6668 | bind(&next); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 6669 | lw(a1, FieldMemOperand(a2, HeapObject::kMapOffset)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 6670 | |
| 6671 | // For all objects but the receiver, check that the cache is empty. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 6672 | EnumLength(a3, a1); |
| 6673 | Branch(call_runtime, ne, a3, Operand(Smi::FromInt(0))); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 6674 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 6675 | bind(&start); |
| 6676 | |
| 6677 | // Check that there are no elements. Register a2 contains the current JS |
| 6678 | // object we've reached through the prototype chain. |
| 6679 | Label no_elements; |
| 6680 | lw(a2, FieldMemOperand(a2, JSObject::kElementsOffset)); |
| 6681 | Branch(&no_elements, eq, a2, Operand(empty_fixed_array_value)); |
| 6682 | |
| 6683 | // Second chance, the object may be using the empty slow element dictionary. |
| 6684 | LoadRoot(at, Heap::kEmptySlowElementDictionaryRootIndex); |
| 6685 | Branch(call_runtime, ne, a2, Operand(at)); |
| 6686 | |
| 6687 | bind(&no_elements); |
| 6688 | lw(a2, FieldMemOperand(a1, Map::kPrototypeOffset)); |
| 6689 | Branch(&next, ne, a2, Operand(null_value)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 6690 | } |
| 6691 | |
| 6692 | |
| 6693 | void MacroAssembler::ClampUint8(Register output_reg, Register input_reg) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 6694 | DCHECK(!output_reg.is(input_reg)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 6695 | Label done; |
| 6696 | li(output_reg, Operand(255)); |
| 6697 | // Normal branch: nop in delay slot. |
| 6698 | Branch(&done, gt, input_reg, Operand(output_reg)); |
| 6699 | // Use delay slot in this branch. |
| 6700 | Branch(USE_DELAY_SLOT, &done, lt, input_reg, Operand(zero_reg)); |
| 6701 | mov(output_reg, zero_reg); // In delay slot. |
| 6702 | mov(output_reg, input_reg); // Value is in range 0..255. |
| 6703 | bind(&done); |
| 6704 | } |
| 6705 | |
| 6706 | |
| 6707 | void MacroAssembler::ClampDoubleToUint8(Register result_reg, |
| 6708 | DoubleRegister input_reg, |
| 6709 | DoubleRegister temp_double_reg) { |
| 6710 | Label above_zero; |
| 6711 | Label done; |
| 6712 | Label in_bounds; |
| 6713 | |
| 6714 | Move(temp_double_reg, 0.0); |
| 6715 | BranchF(&above_zero, NULL, gt, input_reg, temp_double_reg); |
| 6716 | |
| 6717 | // Double value is less than zero, NaN or Inf, return 0. |
| 6718 | mov(result_reg, zero_reg); |
| 6719 | Branch(&done); |
| 6720 | |
| 6721 | // Double value is >= 255, return 255. |
| 6722 | bind(&above_zero); |
| 6723 | Move(temp_double_reg, 255.0); |
| 6724 | BranchF(&in_bounds, NULL, le, input_reg, temp_double_reg); |
| 6725 | li(result_reg, Operand(255)); |
| 6726 | Branch(&done); |
| 6727 | |
| 6728 | // In 0-255 range, round and truncate. |
| 6729 | bind(&in_bounds); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 6730 | cvt_w_d(temp_double_reg, input_reg); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 6731 | mfc1(result_reg, temp_double_reg); |
| 6732 | bind(&done); |
| 6733 | } |
| 6734 | |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 6735 | void MacroAssembler::TestJSArrayForAllocationMemento(Register receiver_reg, |
| 6736 | Register scratch_reg, |
| 6737 | Label* no_memento_found) { |
| 6738 | Label map_check; |
| 6739 | Label top_check; |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 6740 | ExternalReference new_space_allocation_top_adr = |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 6741 | ExternalReference::new_space_allocation_top_address(isolate()); |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 6742 | const int kMementoMapOffset = JSArray::kSize - kHeapObjectTag; |
| 6743 | const int kMementoEndOffset = kMementoMapOffset + AllocationMemento::kSize; |
| 6744 | |
| 6745 | // Bail out if the object is not in new space. |
| 6746 | JumpIfNotInNewSpace(receiver_reg, scratch_reg, no_memento_found); |
| 6747 | // If the object is in new space, we need to check whether it is on the same |
| 6748 | // page as the current top. |
| 6749 | Addu(scratch_reg, receiver_reg, Operand(kMementoEndOffset)); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 6750 | li(at, Operand(new_space_allocation_top_adr)); |
| 6751 | lw(at, MemOperand(at)); |
| 6752 | Xor(scratch_reg, scratch_reg, Operand(at)); |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 6753 | And(scratch_reg, scratch_reg, Operand(~Page::kPageAlignmentMask)); |
| 6754 | Branch(&top_check, eq, scratch_reg, Operand(zero_reg)); |
| 6755 | // The object is on a different page than allocation top. Bail out if the |
| 6756 | // object sits on the page boundary as no memento can follow and we cannot |
| 6757 | // touch the memory following it. |
| 6758 | Addu(scratch_reg, receiver_reg, Operand(kMementoEndOffset)); |
| 6759 | Xor(scratch_reg, scratch_reg, Operand(receiver_reg)); |
| 6760 | And(scratch_reg, scratch_reg, Operand(~Page::kPageAlignmentMask)); |
| 6761 | Branch(no_memento_found, ne, scratch_reg, Operand(zero_reg)); |
| 6762 | // Continue with the actual map check. |
| 6763 | jmp(&map_check); |
| 6764 | // If top is on the same page as the current object, we need to check whether |
| 6765 | // we are below top. |
| 6766 | bind(&top_check); |
| 6767 | Addu(scratch_reg, receiver_reg, Operand(kMementoEndOffset)); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 6768 | li(at, Operand(new_space_allocation_top_adr)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 6769 | lw(at, MemOperand(at)); |
| 6770 | Branch(no_memento_found, gt, scratch_reg, Operand(at)); |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 6771 | // Memento map check. |
| 6772 | bind(&map_check); |
| 6773 | lw(scratch_reg, MemOperand(receiver_reg, kMementoMapOffset)); |
| 6774 | Branch(no_memento_found, ne, scratch_reg, |
| 6775 | Operand(isolate()->factory()->allocation_memento_map())); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 6776 | } |
| 6777 | |
| 6778 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 6779 | Register GetRegisterThatIsNotOneOf(Register reg1, |
| 6780 | Register reg2, |
| 6781 | Register reg3, |
| 6782 | Register reg4, |
| 6783 | Register reg5, |
| 6784 | Register reg6) { |
| 6785 | RegList regs = 0; |
| 6786 | if (reg1.is_valid()) regs |= reg1.bit(); |
| 6787 | if (reg2.is_valid()) regs |= reg2.bit(); |
| 6788 | if (reg3.is_valid()) regs |= reg3.bit(); |
| 6789 | if (reg4.is_valid()) regs |= reg4.bit(); |
| 6790 | if (reg5.is_valid()) regs |= reg5.bit(); |
| 6791 | if (reg6.is_valid()) regs |= reg6.bit(); |
| 6792 | |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 6793 | const RegisterConfiguration* config = RegisterConfiguration::Crankshaft(); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 6794 | for (int i = 0; i < config->num_allocatable_general_registers(); ++i) { |
| 6795 | int code = config->GetAllocatableGeneralCode(i); |
| 6796 | Register candidate = Register::from_code(code); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 6797 | if (regs & candidate.bit()) continue; |
| 6798 | return candidate; |
| 6799 | } |
| 6800 | UNREACHABLE(); |
| 6801 | return no_reg; |
| 6802 | } |
| 6803 | |
| 6804 | |
| 6805 | void MacroAssembler::JumpIfDictionaryInPrototypeChain( |
| 6806 | Register object, |
| 6807 | Register scratch0, |
| 6808 | Register scratch1, |
| 6809 | Label* found) { |
| 6810 | DCHECK(!scratch1.is(scratch0)); |
| 6811 | Factory* factory = isolate()->factory(); |
| 6812 | Register current = scratch0; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 6813 | Label loop_again, end; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 6814 | |
| 6815 | // Scratch contained elements pointer. |
| 6816 | Move(current, object); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 6817 | lw(current, FieldMemOperand(current, HeapObject::kMapOffset)); |
| 6818 | lw(current, FieldMemOperand(current, Map::kPrototypeOffset)); |
| 6819 | Branch(&end, eq, current, Operand(factory->null_value())); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 6820 | |
| 6821 | // Loop based on the map going up the prototype chain. |
| 6822 | bind(&loop_again); |
| 6823 | lw(current, FieldMemOperand(current, HeapObject::kMapOffset)); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 6824 | lbu(scratch1, FieldMemOperand(current, Map::kInstanceTypeOffset)); |
| 6825 | STATIC_ASSERT(JS_VALUE_TYPE < JS_OBJECT_TYPE); |
| 6826 | STATIC_ASSERT(JS_PROXY_TYPE < JS_OBJECT_TYPE); |
| 6827 | Branch(found, lo, scratch1, Operand(JS_OBJECT_TYPE)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 6828 | lb(scratch1, FieldMemOperand(current, Map::kBitField2Offset)); |
| 6829 | DecodeField<Map::ElementsKindBits>(scratch1); |
| 6830 | Branch(found, eq, scratch1, Operand(DICTIONARY_ELEMENTS)); |
| 6831 | lw(current, FieldMemOperand(current, Map::kPrototypeOffset)); |
| 6832 | Branch(&loop_again, ne, current, Operand(factory->null_value())); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 6833 | |
| 6834 | bind(&end); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 6835 | } |
| 6836 | |
| 6837 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 6838 | bool AreAliased(Register reg1, Register reg2, Register reg3, Register reg4, |
| 6839 | Register reg5, Register reg6, Register reg7, Register reg8, |
| 6840 | Register reg9, Register reg10) { |
| 6841 | int n_of_valid_regs = reg1.is_valid() + reg2.is_valid() + reg3.is_valid() + |
| 6842 | reg4.is_valid() + reg5.is_valid() + reg6.is_valid() + |
| 6843 | reg7.is_valid() + reg8.is_valid() + reg9.is_valid() + |
| 6844 | reg10.is_valid(); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 6845 | |
| 6846 | RegList regs = 0; |
| 6847 | if (reg1.is_valid()) regs |= reg1.bit(); |
| 6848 | if (reg2.is_valid()) regs |= reg2.bit(); |
| 6849 | if (reg3.is_valid()) regs |= reg3.bit(); |
| 6850 | if (reg4.is_valid()) regs |= reg4.bit(); |
| 6851 | if (reg5.is_valid()) regs |= reg5.bit(); |
| 6852 | if (reg6.is_valid()) regs |= reg6.bit(); |
| 6853 | if (reg7.is_valid()) regs |= reg7.bit(); |
| 6854 | if (reg8.is_valid()) regs |= reg8.bit(); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 6855 | if (reg9.is_valid()) regs |= reg9.bit(); |
| 6856 | if (reg10.is_valid()) regs |= reg10.bit(); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 6857 | int n_of_non_aliasing_regs = NumRegs(regs); |
| 6858 | |
| 6859 | return n_of_valid_regs != n_of_non_aliasing_regs; |
| 6860 | } |
| 6861 | |
| 6862 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 6863 | CodePatcher::CodePatcher(Isolate* isolate, byte* address, int instructions, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 6864 | FlushICache flush_cache) |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 6865 | : address_(address), |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 6866 | size_(instructions * Assembler::kInstrSize), |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 6867 | masm_(isolate, address, size_ + Assembler::kGap, CodeObjectRequired::kNo), |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 6868 | flush_cache_(flush_cache) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 6869 | // Create a new macro assembler pointing to the address of the code to patch. |
| 6870 | // The size is adjusted with kGap on order for the assembler to generate size |
| 6871 | // bytes of instructions without failing with buffer size constraints. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 6872 | DCHECK(masm_.reloc_info_writer.pos() == address_ + size_ + Assembler::kGap); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 6873 | } |
| 6874 | |
| 6875 | |
| 6876 | CodePatcher::~CodePatcher() { |
| 6877 | // Indicate that code has changed. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 6878 | if (flush_cache_ == FLUSH) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 6879 | Assembler::FlushICache(masm_.isolate(), address_, size_); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 6880 | } |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 6881 | |
| 6882 | // Check that the code was patched as expected. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 6883 | DCHECK(masm_.pc_ == address_ + size_); |
| 6884 | DCHECK(masm_.reloc_info_writer.pos() == address_ + size_ + Assembler::kGap); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 6885 | } |
| 6886 | |
| 6887 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 6888 | void CodePatcher::Emit(Instr instr) { |
| 6889 | masm()->emit(instr); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 6890 | } |
| 6891 | |
| 6892 | |
| 6893 | void CodePatcher::Emit(Address addr) { |
| 6894 | masm()->emit(reinterpret_cast<Instr>(addr)); |
| 6895 | } |
| 6896 | |
| 6897 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 6898 | void CodePatcher::ChangeBranchCondition(Instr current_instr, |
| 6899 | uint32_t new_opcode) { |
| 6900 | current_instr = (current_instr & ~kOpcodeMask) | new_opcode; |
| 6901 | masm_.emit(current_instr); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 6902 | } |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 6903 | |
| 6904 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 6905 | void MacroAssembler::TruncatingDiv(Register result, |
| 6906 | Register dividend, |
| 6907 | int32_t divisor) { |
| 6908 | DCHECK(!dividend.is(result)); |
| 6909 | DCHECK(!dividend.is(at)); |
| 6910 | DCHECK(!result.is(at)); |
| 6911 | base::MagicNumbersForDivision<uint32_t> mag = |
| 6912 | base::SignedDivisionByConstant(static_cast<uint32_t>(divisor)); |
| 6913 | li(at, Operand(mag.multiplier)); |
| 6914 | Mulh(result, dividend, Operand(at)); |
| 6915 | bool neg = (mag.multiplier & (static_cast<uint32_t>(1) << 31)) != 0; |
| 6916 | if (divisor > 0 && neg) { |
| 6917 | Addu(result, result, Operand(dividend)); |
| 6918 | } |
| 6919 | if (divisor < 0 && !neg && mag.multiplier > 0) { |
| 6920 | Subu(result, result, Operand(dividend)); |
| 6921 | } |
| 6922 | if (mag.shift > 0) sra(result, result, mag.shift); |
| 6923 | srl(at, dividend, 31); |
| 6924 | Addu(result, result, Operand(at)); |
| 6925 | } |
| 6926 | |
| 6927 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 6928 | } // namespace internal |
| 6929 | } // namespace v8 |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 6930 | |
Leon Clarke | f7060e2 | 2010-06-03 12:02:55 +0100 | [diff] [blame] | 6931 | #endif // V8_TARGET_ARCH_MIPS |