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 | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 21 | MacroAssembler::MacroAssembler(Isolate* arg_isolate, void* buffer, int size, |
| 22 | CodeObjectRequired create_code_object) |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 23 | : Assembler(arg_isolate, buffer, size), |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 24 | generating_stub_(false), |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 25 | has_frame_(false), |
| 26 | has_double_zero_reg_set_(false) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 27 | if (create_code_object == CodeObjectRequired::kYes) { |
| 28 | code_object_ = |
| 29 | Handle<Object>::New(isolate()->heap()->undefined_value(), isolate()); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 30 | } |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 31 | } |
| 32 | |
| 33 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 34 | void MacroAssembler::Load(Register dst, |
| 35 | const MemOperand& src, |
| 36 | Representation r) { |
| 37 | DCHECK(!r.IsDouble()); |
| 38 | if (r.IsInteger8()) { |
| 39 | lb(dst, src); |
| 40 | } else if (r.IsUInteger8()) { |
| 41 | lbu(dst, src); |
| 42 | } else if (r.IsInteger16()) { |
| 43 | lh(dst, src); |
| 44 | } else if (r.IsUInteger16()) { |
| 45 | lhu(dst, src); |
| 46 | } else { |
| 47 | lw(dst, src); |
| 48 | } |
| 49 | } |
| 50 | |
| 51 | |
| 52 | void MacroAssembler::Store(Register src, |
| 53 | const MemOperand& dst, |
| 54 | Representation r) { |
| 55 | DCHECK(!r.IsDouble()); |
| 56 | if (r.IsInteger8() || r.IsUInteger8()) { |
| 57 | sb(src, dst); |
| 58 | } else if (r.IsInteger16() || r.IsUInteger16()) { |
| 59 | sh(src, dst); |
| 60 | } else { |
| 61 | if (r.IsHeapObject()) { |
| 62 | AssertNotSmi(src); |
| 63 | } else if (r.IsSmi()) { |
| 64 | AssertSmi(src); |
| 65 | } |
| 66 | sw(src, dst); |
| 67 | } |
| 68 | } |
| 69 | |
| 70 | |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 71 | void MacroAssembler::LoadRoot(Register destination, |
| 72 | Heap::RootListIndex index) { |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 73 | lw(destination, MemOperand(s6, index << kPointerSizeLog2)); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 74 | } |
| 75 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 76 | |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 77 | void MacroAssembler::LoadRoot(Register destination, |
| 78 | Heap::RootListIndex index, |
| 79 | Condition cond, |
| 80 | Register src1, const Operand& src2) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 81 | Branch(2, NegateCondition(cond), src1, src2); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 82 | lw(destination, MemOperand(s6, index << kPointerSizeLog2)); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 83 | } |
| 84 | |
| 85 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 86 | void MacroAssembler::StoreRoot(Register source, |
| 87 | Heap::RootListIndex index) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 88 | DCHECK(Heap::RootCanBeWrittenAfterInitialization(index)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 89 | sw(source, MemOperand(s6, index << kPointerSizeLog2)); |
| 90 | } |
| 91 | |
| 92 | |
| 93 | void MacroAssembler::StoreRoot(Register source, |
| 94 | Heap::RootListIndex index, |
| 95 | Condition cond, |
| 96 | Register src1, const Operand& src2) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 97 | DCHECK(Heap::RootCanBeWrittenAfterInitialization(index)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 98 | Branch(2, NegateCondition(cond), src1, src2); |
| 99 | sw(source, MemOperand(s6, index << kPointerSizeLog2)); |
| 100 | } |
| 101 | |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 102 | void MacroAssembler::PushCommonFrame(Register marker_reg) { |
| 103 | if (marker_reg.is_valid()) { |
| 104 | Push(ra, fp, marker_reg); |
| 105 | Addu(fp, sp, Operand(kPointerSize)); |
| 106 | } else { |
| 107 | Push(ra, fp); |
| 108 | mov(fp, sp); |
| 109 | } |
| 110 | } |
| 111 | |
| 112 | void MacroAssembler::PopCommonFrame(Register marker_reg) { |
| 113 | if (marker_reg.is_valid()) { |
| 114 | Pop(ra, fp, marker_reg); |
| 115 | } else { |
| 116 | Pop(ra, fp); |
| 117 | } |
| 118 | } |
| 119 | |
| 120 | void MacroAssembler::PushStandardFrame(Register function_reg) { |
| 121 | int offset = -StandardFrameConstants::kContextOffset; |
| 122 | if (function_reg.is_valid()) { |
| 123 | Push(ra, fp, cp, function_reg); |
| 124 | offset += kPointerSize; |
| 125 | } else { |
| 126 | Push(ra, fp, cp); |
| 127 | } |
| 128 | Addu(fp, sp, Operand(offset)); |
| 129 | } |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 130 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 131 | // Push and pop all registers that can hold pointers. |
| 132 | void MacroAssembler::PushSafepointRegisters() { |
| 133 | // Safepoints expect a block of kNumSafepointRegisters values on the |
| 134 | // stack, so adjust the stack for unsaved registers. |
| 135 | const int num_unsaved = kNumSafepointRegisters - kNumSafepointSavedRegisters; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 136 | DCHECK(num_unsaved >= 0); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 137 | if (num_unsaved > 0) { |
| 138 | Subu(sp, sp, Operand(num_unsaved * kPointerSize)); |
| 139 | } |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 140 | MultiPush(kSafepointSavedRegisters); |
| 141 | } |
| 142 | |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 143 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 144 | void MacroAssembler::PopSafepointRegisters() { |
| 145 | const int num_unsaved = kNumSafepointRegisters - kNumSafepointSavedRegisters; |
| 146 | MultiPop(kSafepointSavedRegisters); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 147 | if (num_unsaved > 0) { |
| 148 | Addu(sp, sp, Operand(num_unsaved * kPointerSize)); |
| 149 | } |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 150 | } |
| 151 | |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 152 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 153 | void MacroAssembler::StoreToSafepointRegisterSlot(Register src, Register dst) { |
| 154 | sw(src, SafepointRegisterSlot(dst)); |
| 155 | } |
| 156 | |
| 157 | |
| 158 | void MacroAssembler::LoadFromSafepointRegisterSlot(Register dst, Register src) { |
| 159 | lw(dst, SafepointRegisterSlot(src)); |
| 160 | } |
| 161 | |
| 162 | |
| 163 | int MacroAssembler::SafepointRegisterStackIndex(int reg_code) { |
| 164 | // The registers are pushed starting with the highest encoding, |
| 165 | // which means that lowest encodings are closest to the stack pointer. |
| 166 | return kSafepointRegisterStackIndexMap[reg_code]; |
| 167 | } |
| 168 | |
| 169 | |
| 170 | MemOperand MacroAssembler::SafepointRegisterSlot(Register reg) { |
| 171 | return MemOperand(sp, SafepointRegisterStackIndex(reg.code()) * kPointerSize); |
| 172 | } |
| 173 | |
| 174 | |
| 175 | MemOperand MacroAssembler::SafepointRegistersAndDoublesSlot(Register reg) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 176 | UNIMPLEMENTED_MIPS(); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 177 | // General purpose registers are pushed last on the stack. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 178 | int doubles_size = DoubleRegister::kMaxNumRegisters * kDoubleSize; |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 179 | int register_offset = SafepointRegisterStackIndex(reg.code()) * kPointerSize; |
| 180 | return MemOperand(sp, doubles_size + register_offset); |
| 181 | } |
| 182 | |
| 183 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 184 | void MacroAssembler::InNewSpace(Register object, |
| 185 | Register scratch, |
| 186 | Condition cc, |
| 187 | Label* branch) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 188 | DCHECK(cc == eq || cc == ne); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 189 | const int mask = |
| 190 | 1 << MemoryChunk::IN_FROM_SPACE | 1 << MemoryChunk::IN_TO_SPACE; |
| 191 | CheckPageFlag(object, scratch, mask, cc, branch); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 192 | } |
| 193 | |
| 194 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 195 | // Clobbers object, dst, value, and ra, if (ra_status == kRAHasBeenSaved) |
| 196 | // The register 'object' contains a heap object pointer. The heap object |
| 197 | // tag is shifted away. |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 198 | void MacroAssembler::RecordWriteField( |
| 199 | Register object, |
| 200 | int offset, |
| 201 | Register value, |
| 202 | Register dst, |
| 203 | RAStatus ra_status, |
| 204 | SaveFPRegsMode save_fp, |
| 205 | RememberedSetAction remembered_set_action, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 206 | SmiCheck smi_check, |
| 207 | PointersToHereCheck pointers_to_here_check_for_value) { |
| 208 | DCHECK(!AreAliased(value, dst, t8, object)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 209 | // First, check if a write barrier is even needed. The tests below |
| 210 | // catch stores of Smis. |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 211 | Label done; |
| 212 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 213 | // Skip barrier if writing a smi. |
| 214 | if (smi_check == INLINE_SMI_CHECK) { |
| 215 | JumpIfSmi(value, &done); |
| 216 | } |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 217 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 218 | // Although the object register is tagged, the offset is relative to the start |
| 219 | // of the object, so so offset must be a multiple of kPointerSize. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 220 | DCHECK(IsAligned(offset, kPointerSize)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 221 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 222 | Addu(dst, object, Operand(offset - kHeapObjectTag)); |
| 223 | if (emit_debug_code()) { |
| 224 | Label ok; |
| 225 | And(t8, dst, Operand((1 << kPointerSizeLog2) - 1)); |
| 226 | Branch(&ok, eq, t8, Operand(zero_reg)); |
| 227 | stop("Unaligned cell in write barrier"); |
| 228 | bind(&ok); |
| 229 | } |
| 230 | |
| 231 | RecordWrite(object, |
| 232 | dst, |
| 233 | value, |
| 234 | ra_status, |
| 235 | save_fp, |
| 236 | remembered_set_action, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 237 | OMIT_SMI_CHECK, |
| 238 | pointers_to_here_check_for_value); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 239 | |
| 240 | bind(&done); |
| 241 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 242 | // Clobber clobbered input registers when running with the debug-code flag |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 243 | // turned on to provoke errors. |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 244 | if (emit_debug_code()) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 245 | li(value, Operand(bit_cast<int32_t>(kZapValue + 4))); |
| 246 | li(dst, Operand(bit_cast<int32_t>(kZapValue + 8))); |
| 247 | } |
| 248 | } |
| 249 | |
| 250 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 251 | // Clobbers object, dst, map, and ra, if (ra_status == kRAHasBeenSaved) |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 252 | void MacroAssembler::RecordWriteForMap(Register object, |
| 253 | Register map, |
| 254 | Register dst, |
| 255 | RAStatus ra_status, |
| 256 | SaveFPRegsMode fp_mode) { |
| 257 | if (emit_debug_code()) { |
| 258 | DCHECK(!dst.is(at)); |
| 259 | lw(dst, FieldMemOperand(map, HeapObject::kMapOffset)); |
| 260 | Check(eq, |
| 261 | kWrongAddressOrValuePassedToRecordWrite, |
| 262 | dst, |
| 263 | Operand(isolate()->factory()->meta_map())); |
| 264 | } |
| 265 | |
| 266 | if (!FLAG_incremental_marking) { |
| 267 | return; |
| 268 | } |
| 269 | |
| 270 | if (emit_debug_code()) { |
| 271 | lw(at, FieldMemOperand(object, HeapObject::kMapOffset)); |
| 272 | Check(eq, |
| 273 | kWrongAddressOrValuePassedToRecordWrite, |
| 274 | map, |
| 275 | Operand(at)); |
| 276 | } |
| 277 | |
| 278 | Label done; |
| 279 | |
| 280 | // A single check of the map's pages interesting flag suffices, since it is |
| 281 | // only set during incremental collection, and then it's also guaranteed that |
| 282 | // the from object's page's interesting flag is also set. This optimization |
| 283 | // relies on the fact that maps can never be in new space. |
| 284 | CheckPageFlag(map, |
| 285 | map, // Used as scratch. |
| 286 | MemoryChunk::kPointersToHereAreInterestingMask, |
| 287 | eq, |
| 288 | &done); |
| 289 | |
| 290 | Addu(dst, object, Operand(HeapObject::kMapOffset - kHeapObjectTag)); |
| 291 | if (emit_debug_code()) { |
| 292 | Label ok; |
| 293 | And(at, dst, Operand((1 << kPointerSizeLog2) - 1)); |
| 294 | Branch(&ok, eq, at, Operand(zero_reg)); |
| 295 | stop("Unaligned cell in write barrier"); |
| 296 | bind(&ok); |
| 297 | } |
| 298 | |
| 299 | // Record the actual write. |
| 300 | if (ra_status == kRAHasNotBeenSaved) { |
| 301 | push(ra); |
| 302 | } |
| 303 | RecordWriteStub stub(isolate(), object, map, dst, OMIT_REMEMBERED_SET, |
| 304 | fp_mode); |
| 305 | CallStub(&stub); |
| 306 | if (ra_status == kRAHasNotBeenSaved) { |
| 307 | pop(ra); |
| 308 | } |
| 309 | |
| 310 | bind(&done); |
| 311 | |
| 312 | // Count number of write barriers in generated code. |
| 313 | isolate()->counters()->write_barriers_static()->Increment(); |
| 314 | IncrementCounter(isolate()->counters()->write_barriers_dynamic(), 1, at, dst); |
| 315 | |
| 316 | // Clobber clobbered registers when running with the debug-code flag |
| 317 | // turned on to provoke errors. |
| 318 | if (emit_debug_code()) { |
| 319 | li(dst, Operand(bit_cast<int32_t>(kZapValue + 12))); |
| 320 | li(map, Operand(bit_cast<int32_t>(kZapValue + 16))); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 321 | } |
| 322 | } |
| 323 | |
| 324 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 325 | // Clobbers object, address, value, and ra, if (ra_status == kRAHasBeenSaved) |
| 326 | // The register 'object' contains a heap object pointer. The heap object |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 327 | // tag is shifted away. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 328 | void MacroAssembler::RecordWrite( |
| 329 | Register object, |
| 330 | Register address, |
| 331 | Register value, |
| 332 | RAStatus ra_status, |
| 333 | SaveFPRegsMode fp_mode, |
| 334 | RememberedSetAction remembered_set_action, |
| 335 | SmiCheck smi_check, |
| 336 | PointersToHereCheck pointers_to_here_check_for_value) { |
| 337 | DCHECK(!AreAliased(object, address, value, t8)); |
| 338 | DCHECK(!AreAliased(object, address, value, t9)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 339 | |
| 340 | if (emit_debug_code()) { |
| 341 | lw(at, MemOperand(address)); |
| 342 | Assert( |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 343 | eq, kWrongAddressOrValuePassedToRecordWrite, at, Operand(value)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 344 | } |
Ben Murdoch | c7cc028 | 2012-03-05 14:35:55 +0000 | [diff] [blame] | 345 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 346 | if (remembered_set_action == OMIT_REMEMBERED_SET && |
| 347 | !FLAG_incremental_marking) { |
| 348 | return; |
| 349 | } |
| 350 | |
| 351 | // First, check if a write barrier is even needed. The tests below |
| 352 | // catch stores of smis and stores into the young generation. |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 353 | Label done; |
| 354 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 355 | if (smi_check == INLINE_SMI_CHECK) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 356 | DCHECK_EQ(0, kSmiTag); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 357 | JumpIfSmi(value, &done); |
| 358 | } |
| 359 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 360 | if (pointers_to_here_check_for_value != kPointersToHereAreAlwaysInteresting) { |
| 361 | CheckPageFlag(value, |
| 362 | value, // Used as scratch. |
| 363 | MemoryChunk::kPointersToHereAreInterestingMask, |
| 364 | eq, |
| 365 | &done); |
| 366 | } |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 367 | CheckPageFlag(object, |
| 368 | value, // Used as scratch. |
| 369 | MemoryChunk::kPointersFromHereAreInterestingMask, |
| 370 | eq, |
| 371 | &done); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 372 | |
| 373 | // Record the actual write. |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 374 | if (ra_status == kRAHasNotBeenSaved) { |
| 375 | push(ra); |
| 376 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 377 | RecordWriteStub stub(isolate(), object, value, address, remembered_set_action, |
| 378 | fp_mode); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 379 | CallStub(&stub); |
| 380 | if (ra_status == kRAHasNotBeenSaved) { |
| 381 | pop(ra); |
| 382 | } |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 383 | |
| 384 | bind(&done); |
| 385 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 386 | // Count number of write barriers in generated code. |
| 387 | isolate()->counters()->write_barriers_static()->Increment(); |
| 388 | IncrementCounter(isolate()->counters()->write_barriers_dynamic(), 1, at, |
| 389 | value); |
| 390 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 391 | // Clobber clobbered registers when running with the debug-code flag |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 392 | // turned on to provoke errors. |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 393 | if (emit_debug_code()) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 394 | li(address, Operand(bit_cast<int32_t>(kZapValue + 12))); |
| 395 | li(value, Operand(bit_cast<int32_t>(kZapValue + 16))); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 396 | } |
| 397 | } |
| 398 | |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 399 | void MacroAssembler::RecordWriteCodeEntryField(Register js_function, |
| 400 | Register code_entry, |
| 401 | Register scratch) { |
| 402 | const int offset = JSFunction::kCodeEntryOffset; |
| 403 | |
| 404 | // Since a code entry (value) is always in old space, we don't need to update |
| 405 | // remembered set. If incremental marking is off, there is nothing for us to |
| 406 | // do. |
| 407 | if (!FLAG_incremental_marking) return; |
| 408 | |
| 409 | DCHECK(js_function.is(a1)); |
| 410 | DCHECK(code_entry.is(t0)); |
| 411 | DCHECK(scratch.is(t1)); |
| 412 | AssertNotSmi(js_function); |
| 413 | |
| 414 | if (emit_debug_code()) { |
| 415 | Addu(scratch, js_function, Operand(offset - kHeapObjectTag)); |
| 416 | lw(at, MemOperand(scratch)); |
| 417 | Assert(eq, kWrongAddressOrValuePassedToRecordWrite, at, |
| 418 | Operand(code_entry)); |
| 419 | } |
| 420 | |
| 421 | // First, check if a write barrier is even needed. The tests below |
| 422 | // catch stores of Smis and stores into young gen. |
| 423 | Label done; |
| 424 | |
| 425 | CheckPageFlag(code_entry, scratch, |
| 426 | MemoryChunk::kPointersToHereAreInterestingMask, eq, &done); |
| 427 | CheckPageFlag(js_function, scratch, |
| 428 | MemoryChunk::kPointersFromHereAreInterestingMask, eq, &done); |
| 429 | |
| 430 | const Register dst = scratch; |
| 431 | Addu(dst, js_function, Operand(offset - kHeapObjectTag)); |
| 432 | |
| 433 | // Save caller-saved registers. js_function and code_entry are in the |
| 434 | // caller-saved register list. |
| 435 | DCHECK(kJSCallerSaved & js_function.bit()); |
| 436 | DCHECK(kJSCallerSaved & code_entry.bit()); |
| 437 | MultiPush(kJSCallerSaved | ra.bit()); |
| 438 | |
| 439 | int argument_count = 3; |
| 440 | |
| 441 | PrepareCallCFunction(argument_count, 0, code_entry); |
| 442 | |
| 443 | mov(a0, js_function); |
| 444 | mov(a1, dst); |
| 445 | li(a2, Operand(ExternalReference::isolate_address(isolate()))); |
| 446 | |
| 447 | { |
| 448 | AllowExternalCallThatCantCauseGC scope(this); |
| 449 | CallCFunction( |
| 450 | ExternalReference::incremental_marking_record_write_code_entry_function( |
| 451 | isolate()), |
| 452 | argument_count); |
| 453 | } |
| 454 | |
| 455 | // Restore caller-saved registers. |
| 456 | MultiPop(kJSCallerSaved | ra.bit()); |
| 457 | |
| 458 | bind(&done); |
| 459 | } |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 460 | |
| 461 | void MacroAssembler::RememberedSetHelper(Register object, // For debug tests. |
| 462 | Register address, |
| 463 | Register scratch, |
| 464 | SaveFPRegsMode fp_mode, |
| 465 | RememberedSetFinalAction and_then) { |
| 466 | Label done; |
| 467 | if (emit_debug_code()) { |
| 468 | Label ok; |
| 469 | JumpIfNotInNewSpace(object, scratch, &ok); |
| 470 | stop("Remembered set pointer is in new space"); |
| 471 | bind(&ok); |
| 472 | } |
| 473 | // Load store buffer top. |
| 474 | ExternalReference store_buffer = |
| 475 | ExternalReference::store_buffer_top(isolate()); |
| 476 | li(t8, Operand(store_buffer)); |
| 477 | lw(scratch, MemOperand(t8)); |
| 478 | // Store pointer to buffer and increment buffer top. |
| 479 | sw(address, MemOperand(scratch)); |
| 480 | Addu(scratch, scratch, kPointerSize); |
| 481 | // Write back new top of buffer. |
| 482 | sw(scratch, MemOperand(t8)); |
| 483 | // Call stub on end of buffer. |
| 484 | // Check for end of buffer. |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 485 | And(t8, scratch, Operand(StoreBuffer::kStoreBufferMask)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 486 | if (and_then == kFallThroughAtEnd) { |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 487 | Branch(&done, ne, t8, Operand(zero_reg)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 488 | } else { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 489 | DCHECK(and_then == kReturnAtEnd); |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 490 | Ret(ne, t8, Operand(zero_reg)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 491 | } |
| 492 | push(ra); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 493 | StoreBufferOverflowStub store_buffer_overflow(isolate(), fp_mode); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 494 | CallStub(&store_buffer_overflow); |
| 495 | pop(ra); |
| 496 | bind(&done); |
| 497 | if (and_then == kReturnAtEnd) { |
| 498 | Ret(); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 499 | } |
| 500 | } |
| 501 | |
| 502 | |
| 503 | // ----------------------------------------------------------------------------- |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 504 | // Allocation support. |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 505 | |
| 506 | |
| 507 | void MacroAssembler::CheckAccessGlobalProxy(Register holder_reg, |
| 508 | Register scratch, |
| 509 | Label* miss) { |
| 510 | Label same_contexts; |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 511 | Register temporary = t8; |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 512 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 513 | DCHECK(!holder_reg.is(scratch)); |
| 514 | DCHECK(!holder_reg.is(at)); |
| 515 | DCHECK(!scratch.is(at)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 516 | |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 517 | // Load current lexical context from the active StandardFrame, which |
| 518 | // may require crawling past STUB frames. |
| 519 | Label load_context; |
| 520 | Label has_context; |
| 521 | mov(at, fp); |
| 522 | bind(&load_context); |
| 523 | lw(scratch, MemOperand(at, CommonFrameConstants::kContextOrFrameTypeOffset)); |
| 524 | // Passing temporary register, otherwise JumpIfNotSmi modifies register at. |
| 525 | JumpIfNotSmi(scratch, &has_context, temporary); |
| 526 | lw(at, MemOperand(at, CommonFrameConstants::kCallerFPOffset)); |
| 527 | Branch(&load_context); |
| 528 | bind(&has_context); |
| 529 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 530 | // In debug mode, make sure the lexical context is set. |
| 531 | #ifdef DEBUG |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 532 | Check(ne, kWeShouldNotHaveAnEmptyLexicalContext, |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 533 | scratch, Operand(zero_reg)); |
| 534 | #endif |
| 535 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 536 | // Load the native context of the current context. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 537 | lw(scratch, ContextMemOperand(scratch, Context::NATIVE_CONTEXT_INDEX)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 538 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 539 | // Check the context is a native context. |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 540 | if (emit_debug_code()) { |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 541 | push(holder_reg); // Temporarily save holder on the stack. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 542 | // Read the first word and compare to the native_context_map. |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 543 | lw(holder_reg, FieldMemOperand(scratch, HeapObject::kMapOffset)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 544 | LoadRoot(at, Heap::kNativeContextMapRootIndex); |
| 545 | Check(eq, kJSGlobalObjectNativeContextShouldBeANativeContext, |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 546 | holder_reg, Operand(at)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 547 | pop(holder_reg); // Restore holder. |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 548 | } |
| 549 | |
| 550 | // Check if both contexts are the same. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 551 | lw(at, FieldMemOperand(holder_reg, JSGlobalProxy::kNativeContextOffset)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 552 | Branch(&same_contexts, eq, scratch, Operand(at)); |
| 553 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 554 | // Check the context is a native context. |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 555 | if (emit_debug_code()) { |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 556 | push(holder_reg); // Temporarily save holder on the stack. |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 557 | mov(holder_reg, at); // Move at to its holding place. |
| 558 | LoadRoot(at, Heap::kNullValueRootIndex); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 559 | Check(ne, kJSGlobalProxyContextShouldNotBeNull, |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 560 | holder_reg, Operand(at)); |
| 561 | |
| 562 | lw(holder_reg, FieldMemOperand(holder_reg, HeapObject::kMapOffset)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 563 | LoadRoot(at, Heap::kNativeContextMapRootIndex); |
| 564 | Check(eq, kJSGlobalObjectNativeContextShouldBeANativeContext, |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 565 | holder_reg, Operand(at)); |
| 566 | // Restore at is not needed. at is reloaded below. |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 567 | pop(holder_reg); // Restore holder. |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 568 | // Restore at to holder's context. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 569 | lw(at, FieldMemOperand(holder_reg, JSGlobalProxy::kNativeContextOffset)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 570 | } |
| 571 | |
| 572 | // Check that the security token in the calling global object is |
| 573 | // compatible with the security token in the receiving global |
| 574 | // object. |
| 575 | int token_offset = Context::kHeaderSize + |
| 576 | Context::SECURITY_TOKEN_INDEX * kPointerSize; |
| 577 | |
| 578 | lw(scratch, FieldMemOperand(scratch, token_offset)); |
| 579 | lw(at, FieldMemOperand(at, token_offset)); |
| 580 | Branch(miss, ne, scratch, Operand(at)); |
| 581 | |
| 582 | bind(&same_contexts); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 583 | } |
| 584 | |
| 585 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 586 | // Compute the hash code from the untagged key. This must be kept in sync with |
| 587 | // ComputeIntegerHash in utils.h and KeyedLoadGenericStub in |
| 588 | // code-stub-hydrogen.cc |
Ben Murdoch | c7cc028 | 2012-03-05 14:35:55 +0000 | [diff] [blame] | 589 | void MacroAssembler::GetNumberHash(Register reg0, Register scratch) { |
| 590 | // First of all we assign the hash seed to scratch. |
| 591 | LoadRoot(scratch, Heap::kHashSeedRootIndex); |
| 592 | SmiUntag(scratch); |
| 593 | |
| 594 | // Xor original key with a seed. |
| 595 | xor_(reg0, reg0, scratch); |
| 596 | |
| 597 | // Compute the hash code from the untagged key. This must be kept in sync |
| 598 | // with ComputeIntegerHash in utils.h. |
| 599 | // |
| 600 | // hash = ~hash + (hash << 15); |
| 601 | nor(scratch, reg0, zero_reg); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 602 | Lsa(reg0, scratch, reg0, 15); |
Ben Murdoch | c7cc028 | 2012-03-05 14:35:55 +0000 | [diff] [blame] | 603 | |
| 604 | // hash = hash ^ (hash >> 12); |
| 605 | srl(at, reg0, 12); |
| 606 | xor_(reg0, reg0, at); |
| 607 | |
| 608 | // hash = hash + (hash << 2); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 609 | Lsa(reg0, reg0, reg0, 2); |
Ben Murdoch | c7cc028 | 2012-03-05 14:35:55 +0000 | [diff] [blame] | 610 | |
| 611 | // hash = hash ^ (hash >> 4); |
| 612 | srl(at, reg0, 4); |
| 613 | xor_(reg0, reg0, at); |
| 614 | |
| 615 | // hash = hash * 2057; |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 616 | sll(scratch, reg0, 11); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 617 | Lsa(reg0, reg0, reg0, 3); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 618 | addu(reg0, reg0, scratch); |
Ben Murdoch | c7cc028 | 2012-03-05 14:35:55 +0000 | [diff] [blame] | 619 | |
| 620 | // hash = hash ^ (hash >> 16); |
| 621 | srl(at, reg0, 16); |
| 622 | xor_(reg0, reg0, at); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 623 | And(reg0, reg0, Operand(0x3fffffff)); |
Ben Murdoch | c7cc028 | 2012-03-05 14:35:55 +0000 | [diff] [blame] | 624 | } |
| 625 | |
| 626 | |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 627 | void MacroAssembler::LoadFromNumberDictionary(Label* miss, |
| 628 | Register elements, |
| 629 | Register key, |
| 630 | Register result, |
| 631 | Register reg0, |
| 632 | Register reg1, |
| 633 | Register reg2) { |
| 634 | // Register use: |
| 635 | // |
| 636 | // elements - holds the slow-case elements of the receiver on entry. |
| 637 | // Unchanged unless 'result' is the same register. |
| 638 | // |
| 639 | // key - holds the smi key on entry. |
| 640 | // Unchanged unless 'result' is the same register. |
| 641 | // |
| 642 | // |
| 643 | // result - holds the result on exit if the load succeeded. |
| 644 | // Allowed to be the same as 'key' or 'result'. |
| 645 | // Unchanged on bailout so 'key' or 'result' can be used |
| 646 | // in further computation. |
| 647 | // |
| 648 | // Scratch registers: |
| 649 | // |
| 650 | // reg0 - holds the untagged key on entry and holds the hash once computed. |
| 651 | // |
| 652 | // reg1 - Used to hold the capacity mask of the dictionary. |
| 653 | // |
| 654 | // reg2 - Used for the index into the dictionary. |
| 655 | // at - Temporary (avoid MacroAssembler instructions also using 'at'). |
| 656 | Label done; |
| 657 | |
Ben Murdoch | c7cc028 | 2012-03-05 14:35:55 +0000 | [diff] [blame] | 658 | GetNumberHash(reg0, reg1); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 659 | |
| 660 | // Compute the capacity mask. |
Ben Murdoch | c7cc028 | 2012-03-05 14:35:55 +0000 | [diff] [blame] | 661 | lw(reg1, FieldMemOperand(elements, SeededNumberDictionary::kCapacityOffset)); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 662 | sra(reg1, reg1, kSmiTagSize); |
| 663 | Subu(reg1, reg1, Operand(1)); |
| 664 | |
| 665 | // Generate an unrolled loop that performs a few probes before giving up. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 666 | for (int i = 0; i < kNumberDictionaryProbes; i++) { |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 667 | // Use reg2 for index calculations and keep the hash intact in reg0. |
| 668 | mov(reg2, reg0); |
| 669 | // Compute the masked index: (hash + i + i * i) & mask. |
| 670 | if (i > 0) { |
Ben Murdoch | c7cc028 | 2012-03-05 14:35:55 +0000 | [diff] [blame] | 671 | Addu(reg2, reg2, Operand(SeededNumberDictionary::GetProbeOffset(i))); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 672 | } |
| 673 | and_(reg2, reg2, reg1); |
| 674 | |
| 675 | // Scale the index by multiplying by the element size. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 676 | DCHECK(SeededNumberDictionary::kEntrySize == 3); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 677 | Lsa(reg2, reg2, reg2, 1); // reg2 = reg2 * 3. |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 678 | |
| 679 | // Check if the key is identical to the name. |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 680 | Lsa(reg2, elements, reg2, kPointerSizeLog2); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 681 | |
Ben Murdoch | c7cc028 | 2012-03-05 14:35:55 +0000 | [diff] [blame] | 682 | lw(at, FieldMemOperand(reg2, SeededNumberDictionary::kElementsStartOffset)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 683 | if (i != kNumberDictionaryProbes - 1) { |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 684 | Branch(&done, eq, key, Operand(at)); |
| 685 | } else { |
| 686 | Branch(miss, ne, key, Operand(at)); |
| 687 | } |
| 688 | } |
| 689 | |
| 690 | bind(&done); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 691 | // Check that the value is a field property. |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 692 | // reg2: elements + (index * kPointerSize). |
| 693 | const int kDetailsOffset = |
Ben Murdoch | c7cc028 | 2012-03-05 14:35:55 +0000 | [diff] [blame] | 694 | SeededNumberDictionary::kElementsStartOffset + 2 * kPointerSize; |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 695 | lw(reg1, FieldMemOperand(reg2, kDetailsOffset)); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 696 | DCHECK_EQ(DATA, 0); |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 697 | And(at, reg1, Operand(Smi::FromInt(PropertyDetails::TypeField::kMask))); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 698 | Branch(miss, ne, at, Operand(zero_reg)); |
| 699 | |
| 700 | // Get the value at the masked, scaled index and return. |
| 701 | const int kValueOffset = |
Ben Murdoch | c7cc028 | 2012-03-05 14:35:55 +0000 | [diff] [blame] | 702 | SeededNumberDictionary::kElementsStartOffset + kPointerSize; |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 703 | lw(result, FieldMemOperand(reg2, kValueOffset)); |
| 704 | } |
| 705 | |
| 706 | |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 707 | // --------------------------------------------------------------------------- |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 708 | // Instruction macros. |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 709 | |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 710 | void MacroAssembler::Addu(Register rd, Register rs, const Operand& rt) { |
| 711 | if (rt.is_reg()) { |
| 712 | addu(rd, rs, rt.rm()); |
| 713 | } else { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 714 | if (is_int16(rt.imm32_) && !MustUseReg(rt.rmode_)) { |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 715 | addiu(rd, rs, rt.imm32_); |
| 716 | } else { |
| 717 | // li handles the relocation. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 718 | DCHECK(!rs.is(at)); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 719 | li(at, rt); |
| 720 | addu(rd, rs, at); |
| 721 | } |
| 722 | } |
| 723 | } |
| 724 | |
| 725 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 726 | void MacroAssembler::Subu(Register rd, Register rs, const Operand& rt) { |
| 727 | if (rt.is_reg()) { |
| 728 | subu(rd, rs, rt.rm()); |
| 729 | } else { |
| 730 | if (is_int16(rt.imm32_) && !MustUseReg(rt.rmode_)) { |
| 731 | addiu(rd, rs, -rt.imm32_); // No subiu instr, use addiu(x, y, -imm). |
| 732 | } else { |
| 733 | // li handles the relocation. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 734 | DCHECK(!rs.is(at)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 735 | li(at, rt); |
| 736 | subu(rd, rs, at); |
| 737 | } |
| 738 | } |
| 739 | } |
| 740 | |
| 741 | |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 742 | void MacroAssembler::Mul(Register rd, Register rs, const Operand& rt) { |
| 743 | if (rt.is_reg()) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 744 | if (IsMipsArchVariant(kLoongson)) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 745 | mult(rs, rt.rm()); |
| 746 | mflo(rd); |
| 747 | } else { |
| 748 | mul(rd, rs, rt.rm()); |
| 749 | } |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 750 | } else { |
| 751 | // li handles the relocation. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 752 | DCHECK(!rs.is(at)); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 753 | li(at, rt); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 754 | if (IsMipsArchVariant(kLoongson)) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 755 | mult(rs, at); |
| 756 | mflo(rd); |
| 757 | } else { |
| 758 | mul(rd, rs, at); |
| 759 | } |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 760 | } |
| 761 | } |
| 762 | |
| 763 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 764 | void MacroAssembler::Mul(Register rd_hi, Register rd_lo, |
| 765 | Register rs, const Operand& rt) { |
| 766 | if (rt.is_reg()) { |
| 767 | if (!IsMipsArchVariant(kMips32r6)) { |
| 768 | mult(rs, rt.rm()); |
| 769 | mflo(rd_lo); |
| 770 | mfhi(rd_hi); |
| 771 | } else { |
| 772 | if (rd_lo.is(rs)) { |
| 773 | DCHECK(!rd_hi.is(rs)); |
| 774 | DCHECK(!rd_hi.is(rt.rm()) && !rd_lo.is(rt.rm())); |
| 775 | muh(rd_hi, rs, rt.rm()); |
| 776 | mul(rd_lo, rs, rt.rm()); |
| 777 | } else { |
| 778 | DCHECK(!rd_hi.is(rt.rm()) && !rd_lo.is(rt.rm())); |
| 779 | mul(rd_lo, rs, rt.rm()); |
| 780 | muh(rd_hi, rs, rt.rm()); |
| 781 | } |
| 782 | } |
| 783 | } else { |
| 784 | // li handles the relocation. |
| 785 | DCHECK(!rs.is(at)); |
| 786 | li(at, rt); |
| 787 | if (!IsMipsArchVariant(kMips32r6)) { |
| 788 | mult(rs, at); |
| 789 | mflo(rd_lo); |
| 790 | mfhi(rd_hi); |
| 791 | } else { |
| 792 | if (rd_lo.is(rs)) { |
| 793 | DCHECK(!rd_hi.is(rs)); |
| 794 | DCHECK(!rd_hi.is(at) && !rd_lo.is(at)); |
| 795 | muh(rd_hi, rs, at); |
| 796 | mul(rd_lo, rs, at); |
| 797 | } else { |
| 798 | DCHECK(!rd_hi.is(at) && !rd_lo.is(at)); |
| 799 | mul(rd_lo, rs, at); |
| 800 | muh(rd_hi, rs, at); |
| 801 | } |
| 802 | } |
| 803 | } |
| 804 | } |
| 805 | |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 806 | void MacroAssembler::Mulu(Register rd_hi, Register rd_lo, Register rs, |
| 807 | const Operand& rt) { |
| 808 | Register reg; |
| 809 | if (rt.is_reg()) { |
| 810 | reg = rt.rm(); |
| 811 | } else { |
| 812 | DCHECK(!rs.is(at)); |
| 813 | reg = at; |
| 814 | li(reg, rt); |
| 815 | } |
| 816 | |
| 817 | if (!IsMipsArchVariant(kMips32r6)) { |
| 818 | multu(rs, reg); |
| 819 | mflo(rd_lo); |
| 820 | mfhi(rd_hi); |
| 821 | } else { |
| 822 | if (rd_lo.is(rs)) { |
| 823 | DCHECK(!rd_hi.is(rs)); |
| 824 | DCHECK(!rd_hi.is(reg) && !rd_lo.is(reg)); |
| 825 | muhu(rd_hi, rs, reg); |
| 826 | mulu(rd_lo, rs, reg); |
| 827 | } else { |
| 828 | DCHECK(!rd_hi.is(reg) && !rd_lo.is(reg)); |
| 829 | mulu(rd_lo, rs, reg); |
| 830 | muhu(rd_hi, rs, reg); |
| 831 | } |
| 832 | } |
| 833 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 834 | |
| 835 | void MacroAssembler::Mulh(Register rd, Register rs, const Operand& rt) { |
| 836 | if (rt.is_reg()) { |
| 837 | if (!IsMipsArchVariant(kMips32r6)) { |
| 838 | mult(rs, rt.rm()); |
| 839 | mfhi(rd); |
| 840 | } else { |
| 841 | muh(rd, rs, rt.rm()); |
| 842 | } |
| 843 | } else { |
| 844 | // li handles the relocation. |
| 845 | DCHECK(!rs.is(at)); |
| 846 | li(at, rt); |
| 847 | if (!IsMipsArchVariant(kMips32r6)) { |
| 848 | mult(rs, at); |
| 849 | mfhi(rd); |
| 850 | } else { |
| 851 | muh(rd, rs, at); |
| 852 | } |
| 853 | } |
| 854 | } |
| 855 | |
| 856 | |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 857 | void MacroAssembler::Mult(Register rs, const Operand& rt) { |
| 858 | if (rt.is_reg()) { |
| 859 | mult(rs, rt.rm()); |
| 860 | } else { |
| 861 | // li handles the relocation. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 862 | DCHECK(!rs.is(at)); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 863 | li(at, rt); |
| 864 | mult(rs, at); |
| 865 | } |
| 866 | } |
| 867 | |
| 868 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 869 | void MacroAssembler::Mulhu(Register rd, Register rs, const Operand& rt) { |
| 870 | if (rt.is_reg()) { |
| 871 | if (!IsMipsArchVariant(kMips32r6)) { |
| 872 | multu(rs, rt.rm()); |
| 873 | mfhi(rd); |
| 874 | } else { |
| 875 | muhu(rd, rs, rt.rm()); |
| 876 | } |
| 877 | } else { |
| 878 | // li handles the relocation. |
| 879 | DCHECK(!rs.is(at)); |
| 880 | li(at, rt); |
| 881 | if (!IsMipsArchVariant(kMips32r6)) { |
| 882 | multu(rs, at); |
| 883 | mfhi(rd); |
| 884 | } else { |
| 885 | muhu(rd, rs, at); |
| 886 | } |
| 887 | } |
| 888 | } |
| 889 | |
| 890 | |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 891 | void MacroAssembler::Multu(Register rs, const Operand& rt) { |
| 892 | if (rt.is_reg()) { |
| 893 | multu(rs, rt.rm()); |
| 894 | } else { |
| 895 | // li handles the relocation. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 896 | DCHECK(!rs.is(at)); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 897 | li(at, rt); |
| 898 | multu(rs, at); |
| 899 | } |
| 900 | } |
| 901 | |
| 902 | |
| 903 | void MacroAssembler::Div(Register rs, const Operand& rt) { |
| 904 | if (rt.is_reg()) { |
| 905 | div(rs, rt.rm()); |
| 906 | } else { |
| 907 | // li handles the relocation. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 908 | DCHECK(!rs.is(at)); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 909 | li(at, rt); |
| 910 | div(rs, at); |
| 911 | } |
| 912 | } |
| 913 | |
| 914 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 915 | void MacroAssembler::Div(Register rem, Register res, |
| 916 | Register rs, const Operand& rt) { |
| 917 | if (rt.is_reg()) { |
| 918 | if (!IsMipsArchVariant(kMips32r6)) { |
| 919 | div(rs, rt.rm()); |
| 920 | mflo(res); |
| 921 | mfhi(rem); |
| 922 | } else { |
| 923 | div(res, rs, rt.rm()); |
| 924 | mod(rem, rs, rt.rm()); |
| 925 | } |
| 926 | } else { |
| 927 | // li handles the relocation. |
| 928 | DCHECK(!rs.is(at)); |
| 929 | li(at, rt); |
| 930 | if (!IsMipsArchVariant(kMips32r6)) { |
| 931 | div(rs, at); |
| 932 | mflo(res); |
| 933 | mfhi(rem); |
| 934 | } else { |
| 935 | div(res, rs, at); |
| 936 | mod(rem, rs, at); |
| 937 | } |
| 938 | } |
| 939 | } |
| 940 | |
| 941 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 942 | void MacroAssembler::Div(Register res, Register rs, const Operand& rt) { |
| 943 | if (rt.is_reg()) { |
| 944 | if (!IsMipsArchVariant(kMips32r6)) { |
| 945 | div(rs, rt.rm()); |
| 946 | mflo(res); |
| 947 | } else { |
| 948 | div(res, rs, rt.rm()); |
| 949 | } |
| 950 | } else { |
| 951 | // li handles the relocation. |
| 952 | DCHECK(!rs.is(at)); |
| 953 | li(at, rt); |
| 954 | if (!IsMipsArchVariant(kMips32r6)) { |
| 955 | div(rs, at); |
| 956 | mflo(res); |
| 957 | } else { |
| 958 | div(res, rs, at); |
| 959 | } |
| 960 | } |
| 961 | } |
| 962 | |
| 963 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 964 | void MacroAssembler::Mod(Register rd, Register rs, const Operand& rt) { |
| 965 | if (rt.is_reg()) { |
| 966 | if (!IsMipsArchVariant(kMips32r6)) { |
| 967 | div(rs, rt.rm()); |
| 968 | mfhi(rd); |
| 969 | } else { |
| 970 | mod(rd, rs, rt.rm()); |
| 971 | } |
| 972 | } else { |
| 973 | // li handles the relocation. |
| 974 | DCHECK(!rs.is(at)); |
| 975 | li(at, rt); |
| 976 | if (!IsMipsArchVariant(kMips32r6)) { |
| 977 | div(rs, at); |
| 978 | mfhi(rd); |
| 979 | } else { |
| 980 | mod(rd, rs, at); |
| 981 | } |
| 982 | } |
| 983 | } |
| 984 | |
| 985 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 986 | void MacroAssembler::Modu(Register rd, Register rs, const Operand& rt) { |
| 987 | if (rt.is_reg()) { |
| 988 | if (!IsMipsArchVariant(kMips32r6)) { |
| 989 | divu(rs, rt.rm()); |
| 990 | mfhi(rd); |
| 991 | } else { |
| 992 | modu(rd, rs, rt.rm()); |
| 993 | } |
| 994 | } else { |
| 995 | // li handles the relocation. |
| 996 | DCHECK(!rs.is(at)); |
| 997 | li(at, rt); |
| 998 | if (!IsMipsArchVariant(kMips32r6)) { |
| 999 | divu(rs, at); |
| 1000 | mfhi(rd); |
| 1001 | } else { |
| 1002 | modu(rd, rs, at); |
| 1003 | } |
| 1004 | } |
| 1005 | } |
| 1006 | |
| 1007 | |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1008 | void MacroAssembler::Divu(Register rs, const Operand& rt) { |
| 1009 | if (rt.is_reg()) { |
| 1010 | divu(rs, rt.rm()); |
| 1011 | } else { |
| 1012 | // li handles the relocation. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1013 | DCHECK(!rs.is(at)); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1014 | li(at, rt); |
| 1015 | divu(rs, at); |
| 1016 | } |
| 1017 | } |
| 1018 | |
| 1019 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 1020 | void MacroAssembler::Divu(Register res, Register rs, const Operand& rt) { |
| 1021 | if (rt.is_reg()) { |
| 1022 | if (!IsMipsArchVariant(kMips32r6)) { |
| 1023 | divu(rs, rt.rm()); |
| 1024 | mflo(res); |
| 1025 | } else { |
| 1026 | divu(res, rs, rt.rm()); |
| 1027 | } |
| 1028 | } else { |
| 1029 | // li handles the relocation. |
| 1030 | DCHECK(!rs.is(at)); |
| 1031 | li(at, rt); |
| 1032 | if (!IsMipsArchVariant(kMips32r6)) { |
| 1033 | divu(rs, at); |
| 1034 | mflo(res); |
| 1035 | } else { |
| 1036 | divu(res, rs, at); |
| 1037 | } |
| 1038 | } |
| 1039 | } |
| 1040 | |
| 1041 | |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1042 | void MacroAssembler::And(Register rd, Register rs, const Operand& rt) { |
| 1043 | if (rt.is_reg()) { |
| 1044 | and_(rd, rs, rt.rm()); |
| 1045 | } else { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1046 | if (is_uint16(rt.imm32_) && !MustUseReg(rt.rmode_)) { |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1047 | andi(rd, rs, rt.imm32_); |
| 1048 | } else { |
| 1049 | // li handles the relocation. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1050 | DCHECK(!rs.is(at)); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1051 | li(at, rt); |
| 1052 | and_(rd, rs, at); |
| 1053 | } |
| 1054 | } |
| 1055 | } |
| 1056 | |
| 1057 | |
| 1058 | void MacroAssembler::Or(Register rd, Register rs, const Operand& rt) { |
| 1059 | if (rt.is_reg()) { |
| 1060 | or_(rd, rs, rt.rm()); |
| 1061 | } else { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1062 | if (is_uint16(rt.imm32_) && !MustUseReg(rt.rmode_)) { |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1063 | ori(rd, rs, rt.imm32_); |
| 1064 | } else { |
| 1065 | // li handles the relocation. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1066 | DCHECK(!rs.is(at)); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1067 | li(at, rt); |
| 1068 | or_(rd, rs, at); |
| 1069 | } |
| 1070 | } |
| 1071 | } |
| 1072 | |
| 1073 | |
| 1074 | void MacroAssembler::Xor(Register rd, Register rs, const Operand& rt) { |
| 1075 | if (rt.is_reg()) { |
| 1076 | xor_(rd, rs, rt.rm()); |
| 1077 | } else { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1078 | if (is_uint16(rt.imm32_) && !MustUseReg(rt.rmode_)) { |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1079 | xori(rd, rs, rt.imm32_); |
| 1080 | } else { |
| 1081 | // li handles the relocation. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1082 | DCHECK(!rs.is(at)); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1083 | li(at, rt); |
| 1084 | xor_(rd, rs, at); |
| 1085 | } |
| 1086 | } |
| 1087 | } |
| 1088 | |
| 1089 | |
| 1090 | void MacroAssembler::Nor(Register rd, Register rs, const Operand& rt) { |
| 1091 | if (rt.is_reg()) { |
| 1092 | nor(rd, rs, rt.rm()); |
| 1093 | } else { |
| 1094 | // li handles the relocation. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1095 | DCHECK(!rs.is(at)); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1096 | li(at, rt); |
| 1097 | nor(rd, rs, at); |
| 1098 | } |
| 1099 | } |
| 1100 | |
| 1101 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1102 | void MacroAssembler::Neg(Register rs, const Operand& rt) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1103 | DCHECK(rt.is_reg()); |
| 1104 | DCHECK(!at.is(rs)); |
| 1105 | DCHECK(!at.is(rt.rm())); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1106 | li(at, -1); |
| 1107 | xor_(rs, rt.rm(), at); |
| 1108 | } |
| 1109 | |
| 1110 | |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1111 | void MacroAssembler::Slt(Register rd, Register rs, const Operand& rt) { |
| 1112 | if (rt.is_reg()) { |
| 1113 | slt(rd, rs, rt.rm()); |
| 1114 | } else { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1115 | if (is_int16(rt.imm32_) && !MustUseReg(rt.rmode_)) { |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1116 | slti(rd, rs, rt.imm32_); |
| 1117 | } else { |
| 1118 | // li handles the relocation. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1119 | DCHECK(!rs.is(at)); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1120 | li(at, rt); |
| 1121 | slt(rd, rs, at); |
| 1122 | } |
| 1123 | } |
| 1124 | } |
| 1125 | |
| 1126 | |
| 1127 | void MacroAssembler::Sltu(Register rd, Register rs, const Operand& rt) { |
| 1128 | if (rt.is_reg()) { |
| 1129 | sltu(rd, rs, rt.rm()); |
| 1130 | } else { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1131 | if (is_uint16(rt.imm32_) && !MustUseReg(rt.rmode_)) { |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1132 | sltiu(rd, rs, rt.imm32_); |
| 1133 | } else { |
| 1134 | // li handles the relocation. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1135 | DCHECK(!rs.is(at)); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1136 | li(at, rt); |
| 1137 | sltu(rd, rs, at); |
| 1138 | } |
| 1139 | } |
| 1140 | } |
| 1141 | |
| 1142 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1143 | void MacroAssembler::Ror(Register rd, Register rs, const Operand& rt) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1144 | if (IsMipsArchVariant(kMips32r2) || IsMipsArchVariant(kMips32r6)) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1145 | if (rt.is_reg()) { |
| 1146 | rotrv(rd, rs, rt.rm()); |
| 1147 | } else { |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 1148 | rotr(rd, rs, rt.imm32_ & 0x1f); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1149 | } |
| 1150 | } else { |
| 1151 | if (rt.is_reg()) { |
| 1152 | subu(at, zero_reg, rt.rm()); |
| 1153 | sllv(at, rs, at); |
| 1154 | srlv(rd, rs, rt.rm()); |
| 1155 | or_(rd, rd, at); |
| 1156 | } else { |
| 1157 | if (rt.imm32_ == 0) { |
| 1158 | srl(rd, rs, 0); |
| 1159 | } else { |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 1160 | srl(at, rs, rt.imm32_ & 0x1f); |
| 1161 | sll(rd, rs, (0x20 - (rt.imm32_ & 0x1f)) & 0x1f); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1162 | or_(rd, rd, at); |
| 1163 | } |
| 1164 | } |
| 1165 | } |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1166 | } |
| 1167 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1168 | |
| 1169 | void MacroAssembler::Pref(int32_t hint, const MemOperand& rs) { |
| 1170 | if (IsMipsArchVariant(kLoongson)) { |
| 1171 | lw(zero_reg, rs); |
| 1172 | } else { |
| 1173 | pref(hint, rs); |
| 1174 | } |
| 1175 | } |
| 1176 | |
| 1177 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1178 | void MacroAssembler::Lsa(Register rd, Register rt, Register rs, uint8_t sa, |
| 1179 | Register scratch) { |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 1180 | DCHECK(sa >= 1 && sa <= 31); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1181 | if (IsMipsArchVariant(kMips32r6) && sa <= 4) { |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 1182 | lsa(rd, rt, rs, sa - 1); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1183 | } else { |
| 1184 | Register tmp = rd.is(rt) ? scratch : rd; |
| 1185 | DCHECK(!tmp.is(rt)); |
| 1186 | sll(tmp, rs, sa); |
| 1187 | Addu(rd, rt, tmp); |
| 1188 | } |
| 1189 | } |
| 1190 | |
| 1191 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1192 | // ------------Pseudo-instructions------------- |
| 1193 | |
| 1194 | void MacroAssembler::Ulw(Register rd, const MemOperand& rs) { |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame^] | 1195 | DCHECK(!rd.is(at)); |
| 1196 | DCHECK(!rs.rm().is(at)); |
| 1197 | if (IsMipsArchVariant(kMips32r6)) { |
| 1198 | lw(rd, rs); |
| 1199 | } else { |
| 1200 | DCHECK(IsMipsArchVariant(kMips32r2) || IsMipsArchVariant(kMips32r1) || |
| 1201 | IsMipsArchVariant(kLoongson)); |
| 1202 | if (is_int16(rs.offset() + kMipsLwrOffset) && |
| 1203 | is_int16(rs.offset() + kMipsLwlOffset)) { |
| 1204 | if (!rd.is(rs.rm())) { |
| 1205 | lwr(rd, MemOperand(rs.rm(), rs.offset() + kMipsLwrOffset)); |
| 1206 | lwl(rd, MemOperand(rs.rm(), rs.offset() + kMipsLwlOffset)); |
| 1207 | } else { |
| 1208 | lwr(at, MemOperand(rs.rm(), rs.offset() + kMipsLwrOffset)); |
| 1209 | lwl(at, MemOperand(rs.rm(), rs.offset() + kMipsLwlOffset)); |
| 1210 | mov(rd, at); |
| 1211 | } |
| 1212 | } else { // Offset > 16 bits, use multiple instructions to load. |
| 1213 | LoadRegPlusOffsetToAt(rs); |
| 1214 | lwr(rd, MemOperand(at, kMipsLwrOffset)); |
| 1215 | lwl(rd, MemOperand(at, kMipsLwlOffset)); |
| 1216 | } |
| 1217 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1218 | } |
| 1219 | |
| 1220 | |
| 1221 | void MacroAssembler::Usw(Register rd, const MemOperand& rs) { |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame^] | 1222 | DCHECK(!rd.is(at)); |
| 1223 | DCHECK(!rs.rm().is(at)); |
| 1224 | if (IsMipsArchVariant(kMips32r6)) { |
| 1225 | sw(rd, rs); |
| 1226 | } else { |
| 1227 | DCHECK(IsMipsArchVariant(kMips32r2) || IsMipsArchVariant(kMips32r1) || |
| 1228 | IsMipsArchVariant(kLoongson)); |
| 1229 | if (is_int16(rs.offset() + kMipsSwrOffset) && |
| 1230 | is_int16(rs.offset() + kMipsSwlOffset)) { |
| 1231 | swr(rd, MemOperand(rs.rm(), rs.offset() + kMipsSwrOffset)); |
| 1232 | swl(rd, MemOperand(rs.rm(), rs.offset() + kMipsSwlOffset)); |
| 1233 | } else { |
| 1234 | LoadRegPlusOffsetToAt(rs); |
| 1235 | swr(rd, MemOperand(at, kMipsSwrOffset)); |
| 1236 | swl(rd, MemOperand(at, kMipsSwlOffset)); |
| 1237 | } |
| 1238 | } |
| 1239 | } |
| 1240 | |
| 1241 | void MacroAssembler::Ulh(Register rd, const MemOperand& rs) { |
| 1242 | DCHECK(!rd.is(at)); |
| 1243 | DCHECK(!rs.rm().is(at)); |
| 1244 | if (IsMipsArchVariant(kMips32r6)) { |
| 1245 | lh(rd, rs); |
| 1246 | } else { |
| 1247 | DCHECK(IsMipsArchVariant(kMips32r2) || IsMipsArchVariant(kMips32r1) || |
| 1248 | IsMipsArchVariant(kLoongson)); |
| 1249 | if (is_int16(rs.offset()) && is_int16(rs.offset() + 1)) { |
| 1250 | #if defined(V8_TARGET_LITTLE_ENDIAN) |
| 1251 | lbu(at, rs); |
| 1252 | lb(rd, MemOperand(rs.rm(), rs.offset() + 1)); |
| 1253 | #elif defined(V8_TARGET_BIG_ENDIAN) |
| 1254 | lbu(at, MemOperand(rs.rm(), rs.offset() + 1)); |
| 1255 | lb(rd, rs); |
| 1256 | #endif |
| 1257 | } else { // Offset > 16 bits, use multiple instructions to load. |
| 1258 | LoadRegPlusOffsetToAt(rs); |
| 1259 | #if defined(V8_TARGET_LITTLE_ENDIAN) |
| 1260 | lb(rd, MemOperand(at, 1)); |
| 1261 | lbu(at, MemOperand(at, 0)); |
| 1262 | #elif defined(V8_TARGET_BIG_ENDIAN) |
| 1263 | lb(rd, MemOperand(at, 0)); |
| 1264 | lbu(at, MemOperand(at, 1)); |
| 1265 | #endif |
| 1266 | } |
| 1267 | sll(rd, rd, 8); |
| 1268 | or_(rd, rd, at); |
| 1269 | } |
| 1270 | } |
| 1271 | |
| 1272 | void MacroAssembler::Ulhu(Register rd, const MemOperand& rs) { |
| 1273 | DCHECK(!rd.is(at)); |
| 1274 | DCHECK(!rs.rm().is(at)); |
| 1275 | if (IsMipsArchVariant(kMips32r6)) { |
| 1276 | lhu(rd, rs); |
| 1277 | } else { |
| 1278 | DCHECK(IsMipsArchVariant(kMips32r2) || IsMipsArchVariant(kMips32r1) || |
| 1279 | IsMipsArchVariant(kLoongson)); |
| 1280 | if (is_int16(rs.offset()) && is_int16(rs.offset() + 1)) { |
| 1281 | #if defined(V8_TARGET_LITTLE_ENDIAN) |
| 1282 | lbu(at, rs); |
| 1283 | lbu(rd, MemOperand(rs.rm(), rs.offset() + 1)); |
| 1284 | #elif defined(V8_TARGET_BIG_ENDIAN) |
| 1285 | lbu(at, MemOperand(rs.rm(), rs.offset() + 1)); |
| 1286 | lbu(rd, rs); |
| 1287 | #endif |
| 1288 | } else { // Offset > 16 bits, use multiple instructions to load. |
| 1289 | LoadRegPlusOffsetToAt(rs); |
| 1290 | #if defined(V8_TARGET_LITTLE_ENDIAN) |
| 1291 | lbu(rd, MemOperand(at, 1)); |
| 1292 | lbu(at, MemOperand(at, 0)); |
| 1293 | #elif defined(V8_TARGET_BIG_ENDIAN) |
| 1294 | lbu(rd, MemOperand(at, 0)); |
| 1295 | lbu(at, MemOperand(at, 1)); |
| 1296 | #endif |
| 1297 | } |
| 1298 | sll(rd, rd, 8); |
| 1299 | or_(rd, rd, at); |
| 1300 | } |
| 1301 | } |
| 1302 | |
| 1303 | void MacroAssembler::Ush(Register rd, const MemOperand& rs, Register scratch) { |
| 1304 | DCHECK(!rd.is(at)); |
| 1305 | DCHECK(!rs.rm().is(at)); |
| 1306 | DCHECK(!rs.rm().is(scratch)); |
| 1307 | DCHECK(!scratch.is(at)); |
| 1308 | if (IsMipsArchVariant(kMips32r6)) { |
| 1309 | sh(rd, rs); |
| 1310 | } else { |
| 1311 | DCHECK(IsMipsArchVariant(kMips32r2) || IsMipsArchVariant(kMips32r1) || |
| 1312 | IsMipsArchVariant(kLoongson)); |
| 1313 | MemOperand source = rs; |
| 1314 | // If offset > 16 bits, load address to at with offset 0. |
| 1315 | if (!is_int16(rs.offset()) || !is_int16(rs.offset() + 1)) { |
| 1316 | LoadRegPlusOffsetToAt(rs); |
| 1317 | source = MemOperand(at, 0); |
| 1318 | } |
| 1319 | |
| 1320 | if (!scratch.is(rd)) { |
| 1321 | mov(scratch, rd); |
| 1322 | } |
| 1323 | |
| 1324 | #if defined(V8_TARGET_LITTLE_ENDIAN) |
| 1325 | sb(scratch, source); |
| 1326 | srl(scratch, scratch, 8); |
| 1327 | sb(scratch, MemOperand(source.rm(), source.offset() + 1)); |
| 1328 | #elif defined(V8_TARGET_BIG_ENDIAN) |
| 1329 | sb(scratch, MemOperand(source.rm(), source.offset() + 1)); |
| 1330 | srl(scratch, scratch, 8); |
| 1331 | sb(scratch, source); |
| 1332 | #endif |
| 1333 | } |
| 1334 | } |
| 1335 | |
| 1336 | void MacroAssembler::Ulwc1(FPURegister fd, const MemOperand& rs, |
| 1337 | Register scratch) { |
| 1338 | if (IsMipsArchVariant(kMips32r6)) { |
| 1339 | lwc1(fd, rs); |
| 1340 | } else { |
| 1341 | DCHECK(IsMipsArchVariant(kMips32r2) || IsMipsArchVariant(kMips32r1) || |
| 1342 | IsMipsArchVariant(kLoongson)); |
| 1343 | Ulw(scratch, rs); |
| 1344 | mtc1(scratch, fd); |
| 1345 | } |
| 1346 | } |
| 1347 | |
| 1348 | void MacroAssembler::Uswc1(FPURegister fd, const MemOperand& rs, |
| 1349 | Register scratch) { |
| 1350 | if (IsMipsArchVariant(kMips32r6)) { |
| 1351 | swc1(fd, rs); |
| 1352 | } else { |
| 1353 | DCHECK(IsMipsArchVariant(kMips32r2) || IsMipsArchVariant(kMips32r1) || |
| 1354 | IsMipsArchVariant(kLoongson)); |
| 1355 | mfc1(scratch, fd); |
| 1356 | Usw(scratch, rs); |
| 1357 | } |
| 1358 | } |
| 1359 | |
| 1360 | void MacroAssembler::Uldc1(FPURegister fd, const MemOperand& rs, |
| 1361 | Register scratch) { |
| 1362 | DCHECK(!scratch.is(at)); |
| 1363 | if (IsMipsArchVariant(kMips32r6)) { |
| 1364 | ldc1(fd, rs); |
| 1365 | } else { |
| 1366 | DCHECK(IsMipsArchVariant(kMips32r2) || IsMipsArchVariant(kMips32r1) || |
| 1367 | IsMipsArchVariant(kLoongson)); |
| 1368 | Ulw(scratch, MemOperand(rs.rm(), rs.offset() + Register::kMantissaOffset)); |
| 1369 | mtc1(scratch, fd); |
| 1370 | Ulw(scratch, MemOperand(rs.rm(), rs.offset() + Register::kExponentOffset)); |
| 1371 | Mthc1(scratch, fd); |
| 1372 | } |
| 1373 | } |
| 1374 | |
| 1375 | void MacroAssembler::Usdc1(FPURegister fd, const MemOperand& rs, |
| 1376 | Register scratch) { |
| 1377 | DCHECK(!scratch.is(at)); |
| 1378 | if (IsMipsArchVariant(kMips32r6)) { |
| 1379 | sdc1(fd, rs); |
| 1380 | } else { |
| 1381 | DCHECK(IsMipsArchVariant(kMips32r2) || IsMipsArchVariant(kMips32r1) || |
| 1382 | IsMipsArchVariant(kLoongson)); |
| 1383 | mfc1(scratch, fd); |
| 1384 | Usw(scratch, MemOperand(rs.rm(), rs.offset() + Register::kMantissaOffset)); |
| 1385 | Mfhc1(scratch, fd); |
| 1386 | Usw(scratch, MemOperand(rs.rm(), rs.offset() + Register::kExponentOffset)); |
| 1387 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1388 | } |
| 1389 | |
| 1390 | |
| 1391 | void MacroAssembler::li(Register dst, Handle<Object> value, LiFlags mode) { |
| 1392 | AllowDeferredHandleDereference smi_check; |
| 1393 | if (value->IsSmi()) { |
| 1394 | li(dst, Operand(value), mode); |
| 1395 | } else { |
| 1396 | DCHECK(value->IsHeapObject()); |
| 1397 | if (isolate()->heap()->InNewSpace(*value)) { |
| 1398 | Handle<Cell> cell = isolate()->factory()->NewCell(value); |
| 1399 | li(dst, Operand(cell)); |
| 1400 | lw(dst, FieldMemOperand(dst, Cell::kValueOffset)); |
| 1401 | } else { |
| 1402 | li(dst, Operand(value)); |
| 1403 | } |
| 1404 | } |
| 1405 | } |
| 1406 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1407 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1408 | void MacroAssembler::li(Register rd, Operand j, LiFlags mode) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1409 | DCHECK(!j.is_reg()); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1410 | BlockTrampolinePoolScope block_trampoline_pool(this); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1411 | if (!MustUseReg(j.rmode_) && mode == OPTIMIZE_SIZE) { |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1412 | // Normal load of an immediate value which does not need Relocation Info. |
| 1413 | if (is_int16(j.imm32_)) { |
| 1414 | addiu(rd, zero_reg, j.imm32_); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1415 | } else if (!(j.imm32_ & kHiMask)) { |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1416 | ori(rd, zero_reg, j.imm32_); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1417 | } else if (!(j.imm32_ & kImm16Mask)) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1418 | lui(rd, (j.imm32_ >> kLuiShift) & kImm16Mask); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1419 | } else { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1420 | lui(rd, (j.imm32_ >> kLuiShift) & kImm16Mask); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1421 | ori(rd, rd, (j.imm32_ & kImm16Mask)); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1422 | } |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1423 | } else { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1424 | if (MustUseReg(j.rmode_)) { |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1425 | RecordRelocInfo(j.rmode_, j.imm32_); |
| 1426 | } |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1427 | // 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] | 1428 | // 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] | 1429 | lui(rd, (j.imm32_ >> kLuiShift) & kImm16Mask); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1430 | ori(rd, rd, (j.imm32_ & kImm16Mask)); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1431 | } |
| 1432 | } |
| 1433 | |
| 1434 | |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1435 | void MacroAssembler::MultiPush(RegList regs) { |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 1436 | int16_t num_to_push = NumberOfBitsSet(regs); |
| 1437 | int16_t stack_offset = num_to_push * kPointerSize; |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1438 | |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 1439 | Subu(sp, sp, Operand(stack_offset)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1440 | for (int16_t i = kNumRegisters - 1; i >= 0; i--) { |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1441 | if ((regs & (1 << i)) != 0) { |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 1442 | stack_offset -= kPointerSize; |
| 1443 | sw(ToRegister(i), MemOperand(sp, stack_offset)); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1444 | } |
| 1445 | } |
| 1446 | } |
| 1447 | |
| 1448 | |
| 1449 | void MacroAssembler::MultiPushReversed(RegList regs) { |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 1450 | int16_t num_to_push = NumberOfBitsSet(regs); |
| 1451 | int16_t stack_offset = num_to_push * kPointerSize; |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1452 | |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 1453 | Subu(sp, sp, Operand(stack_offset)); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 1454 | for (int16_t i = 0; i < kNumRegisters; i++) { |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1455 | if ((regs & (1 << i)) != 0) { |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 1456 | stack_offset -= kPointerSize; |
| 1457 | sw(ToRegister(i), MemOperand(sp, stack_offset)); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1458 | } |
| 1459 | } |
| 1460 | } |
| 1461 | |
| 1462 | |
| 1463 | void MacroAssembler::MultiPop(RegList regs) { |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 1464 | int16_t stack_offset = 0; |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1465 | |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 1466 | for (int16_t i = 0; i < kNumRegisters; i++) { |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1467 | if ((regs & (1 << i)) != 0) { |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 1468 | lw(ToRegister(i), MemOperand(sp, stack_offset)); |
| 1469 | stack_offset += kPointerSize; |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1470 | } |
| 1471 | } |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 1472 | addiu(sp, sp, stack_offset); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1473 | } |
| 1474 | |
| 1475 | |
| 1476 | void MacroAssembler::MultiPopReversed(RegList regs) { |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 1477 | int16_t stack_offset = 0; |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1478 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1479 | for (int16_t i = kNumRegisters - 1; i >= 0; i--) { |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1480 | if ((regs & (1 << i)) != 0) { |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 1481 | lw(ToRegister(i), MemOperand(sp, stack_offset)); |
| 1482 | stack_offset += kPointerSize; |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1483 | } |
| 1484 | } |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 1485 | addiu(sp, sp, stack_offset); |
| 1486 | } |
| 1487 | |
| 1488 | |
| 1489 | void MacroAssembler::MultiPushFPU(RegList regs) { |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 1490 | int16_t num_to_push = NumberOfBitsSet(regs); |
| 1491 | int16_t stack_offset = num_to_push * kDoubleSize; |
| 1492 | |
| 1493 | Subu(sp, sp, Operand(stack_offset)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1494 | for (int16_t i = kNumRegisters - 1; i >= 0; i--) { |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 1495 | if ((regs & (1 << i)) != 0) { |
| 1496 | stack_offset -= kDoubleSize; |
| 1497 | sdc1(FPURegister::from_code(i), MemOperand(sp, stack_offset)); |
| 1498 | } |
| 1499 | } |
| 1500 | } |
| 1501 | |
| 1502 | |
| 1503 | void MacroAssembler::MultiPushReversedFPU(RegList regs) { |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 1504 | int16_t num_to_push = NumberOfBitsSet(regs); |
| 1505 | int16_t stack_offset = num_to_push * kDoubleSize; |
| 1506 | |
| 1507 | Subu(sp, sp, Operand(stack_offset)); |
| 1508 | for (int16_t i = 0; i < kNumRegisters; i++) { |
| 1509 | if ((regs & (1 << i)) != 0) { |
| 1510 | stack_offset -= kDoubleSize; |
| 1511 | sdc1(FPURegister::from_code(i), MemOperand(sp, stack_offset)); |
| 1512 | } |
| 1513 | } |
| 1514 | } |
| 1515 | |
| 1516 | |
| 1517 | void MacroAssembler::MultiPopFPU(RegList regs) { |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 1518 | int16_t stack_offset = 0; |
| 1519 | |
| 1520 | for (int16_t i = 0; i < kNumRegisters; i++) { |
| 1521 | if ((regs & (1 << i)) != 0) { |
| 1522 | ldc1(FPURegister::from_code(i), MemOperand(sp, stack_offset)); |
| 1523 | stack_offset += kDoubleSize; |
| 1524 | } |
| 1525 | } |
| 1526 | addiu(sp, sp, stack_offset); |
| 1527 | } |
| 1528 | |
| 1529 | |
| 1530 | void MacroAssembler::MultiPopReversedFPU(RegList regs) { |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 1531 | int16_t stack_offset = 0; |
| 1532 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1533 | for (int16_t i = kNumRegisters - 1; i >= 0; i--) { |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 1534 | if ((regs & (1 << i)) != 0) { |
| 1535 | ldc1(FPURegister::from_code(i), MemOperand(sp, stack_offset)); |
| 1536 | stack_offset += kDoubleSize; |
| 1537 | } |
| 1538 | } |
| 1539 | addiu(sp, sp, stack_offset); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1540 | } |
| 1541 | |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame^] | 1542 | void MacroAssembler::AddPair(Register dst_low, Register dst_high, |
| 1543 | Register left_low, Register left_high, |
| 1544 | Register right_low, Register right_high) { |
| 1545 | Label no_overflow; |
| 1546 | Register kScratchReg = s3; |
| 1547 | Register kScratchReg2 = s4; |
| 1548 | // Add lower word |
| 1549 | Addu(dst_low, left_low, right_low); |
| 1550 | Addu(dst_high, left_high, right_high); |
| 1551 | // Check for lower word unsigned overflow |
| 1552 | Sltu(kScratchReg, dst_low, left_low); |
| 1553 | Sltu(kScratchReg2, dst_low, right_low); |
| 1554 | Or(kScratchReg, kScratchReg2, kScratchReg); |
| 1555 | Branch(&no_overflow, eq, kScratchReg, Operand(zero_reg)); |
| 1556 | // Increment higher word if there was overflow |
| 1557 | Addu(dst_high, dst_high, 0x1); |
| 1558 | bind(&no_overflow); |
| 1559 | } |
| 1560 | |
| 1561 | void MacroAssembler::SubPair(Register dst_low, Register dst_high, |
| 1562 | Register left_low, Register left_high, |
| 1563 | Register right_low, Register right_high) { |
| 1564 | Label no_overflow; |
| 1565 | Register kScratchReg = s3; |
| 1566 | // Subtract lower word |
| 1567 | Subu(dst_low, left_low, right_low); |
| 1568 | Subu(dst_high, left_high, right_high); |
| 1569 | // Check for lower word unsigned underflow |
| 1570 | Sltu(kScratchReg, left_low, right_low); |
| 1571 | Branch(&no_overflow, eq, kScratchReg, Operand(zero_reg)); |
| 1572 | // Decrement higher word if there was underflow |
| 1573 | Subu(dst_high, dst_high, 0x1); |
| 1574 | bind(&no_overflow); |
| 1575 | } |
| 1576 | |
| 1577 | void MacroAssembler::ShlPair(Register dst_low, Register dst_high, |
| 1578 | Register src_low, Register src_high, |
| 1579 | Register shift) { |
| 1580 | Label less_than_32; |
| 1581 | Label zero_shift; |
| 1582 | Label word_shift; |
| 1583 | Label done; |
| 1584 | Register kScratchReg = s3; |
| 1585 | And(shift, shift, 0x3F); |
| 1586 | li(kScratchReg, 0x20); |
| 1587 | Branch(&less_than_32, lt, shift, Operand(kScratchReg)); |
| 1588 | |
| 1589 | Branch(&word_shift, eq, shift, Operand(kScratchReg)); |
| 1590 | // Shift more than 32 |
| 1591 | Subu(kScratchReg, shift, kScratchReg); |
| 1592 | mov(dst_low, zero_reg); |
| 1593 | sllv(dst_high, src_low, kScratchReg); |
| 1594 | Branch(&done); |
| 1595 | // Word shift |
| 1596 | bind(&word_shift); |
| 1597 | mov(dst_low, zero_reg); |
| 1598 | mov(dst_high, src_low); |
| 1599 | Branch(&done); |
| 1600 | |
| 1601 | bind(&less_than_32); |
| 1602 | // Check if zero shift |
| 1603 | Branch(&zero_shift, eq, shift, Operand(zero_reg)); |
| 1604 | // Shift less than 32 |
| 1605 | Subu(kScratchReg, kScratchReg, shift); |
| 1606 | sllv(dst_high, src_high, shift); |
| 1607 | sllv(dst_low, src_low, shift); |
| 1608 | srlv(kScratchReg, src_low, kScratchReg); |
| 1609 | Or(dst_high, dst_high, kScratchReg); |
| 1610 | Branch(&done); |
| 1611 | // Zero shift |
| 1612 | bind(&zero_shift); |
| 1613 | mov(dst_low, src_low); |
| 1614 | mov(dst_high, src_high); |
| 1615 | bind(&done); |
| 1616 | } |
| 1617 | |
| 1618 | void MacroAssembler::ShlPair(Register dst_low, Register dst_high, |
| 1619 | Register src_low, Register src_high, |
| 1620 | uint32_t shift) { |
| 1621 | Register kScratchReg = s3; |
| 1622 | shift = shift & 0x3F; |
| 1623 | if (shift < 32) { |
| 1624 | if (shift == 0) { |
| 1625 | mov(dst_low, src_low); |
| 1626 | mov(dst_high, src_high); |
| 1627 | } else { |
| 1628 | sll(dst_high, src_high, shift); |
| 1629 | sll(dst_low, src_low, shift); |
| 1630 | shift = 32 - shift; |
| 1631 | srl(kScratchReg, src_low, shift); |
| 1632 | Or(dst_high, dst_high, kScratchReg); |
| 1633 | } |
| 1634 | } else { |
| 1635 | if (shift == 32) { |
| 1636 | mov(dst_low, zero_reg); |
| 1637 | mov(dst_high, src_low); |
| 1638 | } else { |
| 1639 | shift = shift - 32; |
| 1640 | mov(dst_low, zero_reg); |
| 1641 | sll(dst_high, src_low, shift); |
| 1642 | } |
| 1643 | } |
| 1644 | } |
| 1645 | |
| 1646 | void MacroAssembler::ShrPair(Register dst_low, Register dst_high, |
| 1647 | Register src_low, Register src_high, |
| 1648 | Register shift) { |
| 1649 | Label less_than_32; |
| 1650 | Label zero_shift; |
| 1651 | Label word_shift; |
| 1652 | Label done; |
| 1653 | Register kScratchReg = s3; |
| 1654 | And(shift, shift, 0x3F); |
| 1655 | li(kScratchReg, 0x20); |
| 1656 | Branch(&less_than_32, lt, shift, Operand(kScratchReg)); |
| 1657 | |
| 1658 | Branch(&word_shift, eq, shift, Operand(kScratchReg)); |
| 1659 | // Shift more than 32 |
| 1660 | Subu(kScratchReg, shift, kScratchReg); |
| 1661 | mov(dst_high, zero_reg); |
| 1662 | srlv(dst_low, src_high, kScratchReg); |
| 1663 | Branch(&done); |
| 1664 | // Word shift |
| 1665 | bind(&word_shift); |
| 1666 | mov(dst_high, zero_reg); |
| 1667 | mov(dst_low, src_high); |
| 1668 | Branch(&done); |
| 1669 | |
| 1670 | bind(&less_than_32); |
| 1671 | // Check if zero shift |
| 1672 | Branch(&zero_shift, eq, shift, Operand(zero_reg)); |
| 1673 | // Shift less than 32 |
| 1674 | Subu(kScratchReg, kScratchReg, shift); |
| 1675 | srlv(dst_high, src_high, shift); |
| 1676 | srlv(dst_low, src_low, shift); |
| 1677 | sllv(kScratchReg, src_high, kScratchReg); |
| 1678 | Or(dst_low, dst_low, kScratchReg); |
| 1679 | Branch(&done); |
| 1680 | // Zero shift |
| 1681 | bind(&zero_shift); |
| 1682 | mov(dst_low, src_low); |
| 1683 | mov(dst_high, src_high); |
| 1684 | bind(&done); |
| 1685 | } |
| 1686 | |
| 1687 | void MacroAssembler::ShrPair(Register dst_low, Register dst_high, |
| 1688 | Register src_low, Register src_high, |
| 1689 | uint32_t shift) { |
| 1690 | Register kScratchReg = s3; |
| 1691 | shift = shift & 0x3F; |
| 1692 | if (shift < 32) { |
| 1693 | if (shift == 0) { |
| 1694 | mov(dst_low, src_low); |
| 1695 | mov(dst_high, src_high); |
| 1696 | } else { |
| 1697 | srl(dst_high, src_high, shift); |
| 1698 | srl(dst_low, src_low, shift); |
| 1699 | shift = 32 - shift; |
| 1700 | sll(kScratchReg, src_high, shift); |
| 1701 | Or(dst_low, dst_low, kScratchReg); |
| 1702 | } |
| 1703 | } else { |
| 1704 | if (shift == 32) { |
| 1705 | mov(dst_high, zero_reg); |
| 1706 | mov(dst_low, src_high); |
| 1707 | } else { |
| 1708 | shift = shift - 32; |
| 1709 | mov(dst_high, zero_reg); |
| 1710 | srl(dst_low, src_high, shift); |
| 1711 | } |
| 1712 | } |
| 1713 | } |
| 1714 | |
| 1715 | void MacroAssembler::SarPair(Register dst_low, Register dst_high, |
| 1716 | Register src_low, Register src_high, |
| 1717 | Register shift) { |
| 1718 | Label less_than_32; |
| 1719 | Label zero_shift; |
| 1720 | Label word_shift; |
| 1721 | Label done; |
| 1722 | Register kScratchReg = s3; |
| 1723 | Register kScratchReg2 = s4; |
| 1724 | And(shift, shift, 0x3F); |
| 1725 | li(kScratchReg, 0x20); |
| 1726 | Branch(&less_than_32, lt, shift, Operand(kScratchReg)); |
| 1727 | |
| 1728 | Branch(&word_shift, eq, shift, Operand(kScratchReg)); |
| 1729 | |
| 1730 | // Shift more than 32 |
| 1731 | li(kScratchReg2, 0x1F); |
| 1732 | Subu(kScratchReg, shift, kScratchReg); |
| 1733 | srav(dst_high, src_high, kScratchReg2); |
| 1734 | srav(dst_low, src_high, kScratchReg); |
| 1735 | Branch(&done); |
| 1736 | // Word shift |
| 1737 | bind(&word_shift); |
| 1738 | li(kScratchReg2, 0x1F); |
| 1739 | srav(dst_high, src_high, kScratchReg2); |
| 1740 | mov(dst_low, src_high); |
| 1741 | Branch(&done); |
| 1742 | |
| 1743 | bind(&less_than_32); |
| 1744 | // Check if zero shift |
| 1745 | Branch(&zero_shift, eq, shift, Operand(zero_reg)); |
| 1746 | |
| 1747 | // Shift less than 32 |
| 1748 | Subu(kScratchReg, kScratchReg, shift); |
| 1749 | srav(dst_high, src_high, shift); |
| 1750 | srlv(dst_low, src_low, shift); |
| 1751 | sllv(kScratchReg, src_high, kScratchReg); |
| 1752 | Or(dst_low, dst_low, kScratchReg); |
| 1753 | Branch(&done); |
| 1754 | // Zero shift |
| 1755 | bind(&zero_shift); |
| 1756 | mov(dst_low, src_low); |
| 1757 | mov(dst_high, src_high); |
| 1758 | bind(&done); |
| 1759 | } |
| 1760 | |
| 1761 | void MacroAssembler::SarPair(Register dst_low, Register dst_high, |
| 1762 | Register src_low, Register src_high, |
| 1763 | uint32_t shift) { |
| 1764 | Register kScratchReg = s3; |
| 1765 | shift = shift & 0x3F; |
| 1766 | if (shift < 32) { |
| 1767 | if (shift == 0) { |
| 1768 | mov(dst_low, src_low); |
| 1769 | mov(dst_high, src_high); |
| 1770 | } else { |
| 1771 | sra(dst_high, src_high, shift); |
| 1772 | srl(dst_low, src_low, shift); |
| 1773 | shift = 32 - shift; |
| 1774 | sll(kScratchReg, src_high, shift); |
| 1775 | Or(dst_low, dst_low, kScratchReg); |
| 1776 | } |
| 1777 | } else { |
| 1778 | if (shift == 32) { |
| 1779 | sra(dst_high, src_high, 31); |
| 1780 | mov(dst_low, src_high); |
| 1781 | } else { |
| 1782 | shift = shift - 32; |
| 1783 | sra(dst_high, src_high, 31); |
| 1784 | sra(dst_low, src_high, shift); |
| 1785 | } |
| 1786 | } |
| 1787 | } |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1788 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1789 | void MacroAssembler::Ext(Register rt, |
| 1790 | Register rs, |
| 1791 | uint16_t pos, |
| 1792 | uint16_t size) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1793 | DCHECK(pos < 32); |
| 1794 | DCHECK(pos + size < 33); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1795 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1796 | if (IsMipsArchVariant(kMips32r2) || IsMipsArchVariant(kMips32r6)) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1797 | ext_(rt, rs, pos, size); |
| 1798 | } else { |
| 1799 | // Move rs to rt and shift it left then right to get the |
| 1800 | // desired bitfield on the right side and zeroes on the left. |
Ben Murdoch | 69a99ed | 2011-11-30 16:03:39 +0000 | [diff] [blame] | 1801 | int shift_left = 32 - (pos + size); |
| 1802 | sll(rt, rs, shift_left); // Acts as a move if shift_left == 0. |
| 1803 | |
| 1804 | int shift_right = 32 - size; |
| 1805 | if (shift_right > 0) { |
| 1806 | srl(rt, rt, shift_right); |
| 1807 | } |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1808 | } |
| 1809 | } |
| 1810 | |
| 1811 | |
| 1812 | void MacroAssembler::Ins(Register rt, |
| 1813 | Register rs, |
| 1814 | uint16_t pos, |
| 1815 | uint16_t size) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1816 | DCHECK(pos < 32); |
| 1817 | DCHECK(pos + size <= 32); |
| 1818 | DCHECK(size != 0); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1819 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1820 | if (IsMipsArchVariant(kMips32r2) || IsMipsArchVariant(kMips32r6)) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1821 | ins_(rt, rs, pos, size); |
| 1822 | } else { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1823 | DCHECK(!rt.is(t8) && !rs.is(t8)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1824 | Subu(at, zero_reg, Operand(1)); |
| 1825 | srl(at, at, 32 - size); |
| 1826 | and_(t8, rs, at); |
| 1827 | sll(t8, t8, pos); |
| 1828 | sll(at, at, pos); |
| 1829 | nor(at, at, zero_reg); |
| 1830 | and_(at, rt, at); |
| 1831 | or_(rt, t8, at); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1832 | } |
| 1833 | } |
| 1834 | |
| 1835 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1836 | void MacroAssembler::Cvt_d_uw(FPURegister fd, Register rs, |
Ben Murdoch | 69a99ed | 2011-11-30 16:03:39 +0000 | [diff] [blame] | 1837 | FPURegister scratch) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1838 | // In FP64Mode we do convertion from long. |
| 1839 | if (IsFp64Mode()) { |
| 1840 | mtc1(rs, scratch); |
| 1841 | Mthc1(zero_reg, scratch); |
| 1842 | cvt_d_l(fd, scratch); |
| 1843 | } else { |
| 1844 | // Convert rs to a FP value in fd. |
| 1845 | DCHECK(!fd.is(scratch)); |
| 1846 | DCHECK(!rs.is(at)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1847 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1848 | Label msb_clear, conversion_done; |
| 1849 | // For a value which is < 2^31, regard it as a signed positve word. |
| 1850 | Branch(&msb_clear, ge, rs, Operand(zero_reg), USE_DELAY_SLOT); |
| 1851 | mtc1(rs, fd); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1852 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1853 | li(at, 0x41F00000); // FP value: 2^32. |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1854 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1855 | // For unsigned inputs > 2^31, we convert to double as a signed int32, |
| 1856 | // then add 2^32 to move it back to unsigned value in range 2^31..2^31-1. |
| 1857 | mtc1(zero_reg, scratch); |
| 1858 | Mthc1(at, scratch); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1859 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1860 | cvt_d_w(fd, fd); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1861 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1862 | Branch(USE_DELAY_SLOT, &conversion_done); |
| 1863 | add_d(fd, fd, scratch); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1864 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1865 | bind(&msb_clear); |
| 1866 | cvt_d_w(fd, fd); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1867 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1868 | bind(&conversion_done); |
| 1869 | } |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1870 | } |
| 1871 | |
| 1872 | |
Ben Murdoch | 69a99ed | 2011-11-30 16:03:39 +0000 | [diff] [blame] | 1873 | void MacroAssembler::Trunc_uw_d(FPURegister fd, |
| 1874 | FPURegister fs, |
| 1875 | FPURegister scratch) { |
| 1876 | Trunc_uw_d(fs, t8, scratch); |
| 1877 | mtc1(t8, fd); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1878 | } |
| 1879 | |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 1880 | void MacroAssembler::Trunc_uw_s(FPURegister fd, FPURegister fs, |
| 1881 | FPURegister scratch) { |
| 1882 | Trunc_uw_s(fs, t8, scratch); |
| 1883 | mtc1(t8, fd); |
| 1884 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1885 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1886 | void MacroAssembler::Trunc_w_d(FPURegister fd, FPURegister fs) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1887 | if (IsMipsArchVariant(kLoongson) && fd.is(fs)) { |
| 1888 | Mfhc1(t8, fs); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1889 | trunc_w_d(fd, fs); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1890 | Mthc1(t8, fs); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1891 | } else { |
| 1892 | trunc_w_d(fd, fs); |
| 1893 | } |
| 1894 | } |
| 1895 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1896 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1897 | void MacroAssembler::Round_w_d(FPURegister fd, FPURegister fs) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1898 | if (IsMipsArchVariant(kLoongson) && fd.is(fs)) { |
| 1899 | Mfhc1(t8, fs); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1900 | round_w_d(fd, fs); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1901 | Mthc1(t8, fs); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1902 | } else { |
| 1903 | round_w_d(fd, fs); |
| 1904 | } |
| 1905 | } |
| 1906 | |
| 1907 | |
| 1908 | void MacroAssembler::Floor_w_d(FPURegister fd, FPURegister fs) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1909 | if (IsMipsArchVariant(kLoongson) && fd.is(fs)) { |
| 1910 | Mfhc1(t8, fs); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1911 | floor_w_d(fd, fs); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1912 | Mthc1(t8, fs); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1913 | } else { |
| 1914 | floor_w_d(fd, fs); |
| 1915 | } |
| 1916 | } |
| 1917 | |
| 1918 | |
| 1919 | void MacroAssembler::Ceil_w_d(FPURegister fd, FPURegister fs) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1920 | if (IsMipsArchVariant(kLoongson) && fd.is(fs)) { |
| 1921 | Mfhc1(t8, fs); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1922 | ceil_w_d(fd, fs); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1923 | Mthc1(t8, fs); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1924 | } else { |
| 1925 | ceil_w_d(fd, fs); |
| 1926 | } |
| 1927 | } |
| 1928 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1929 | |
Ben Murdoch | 69a99ed | 2011-11-30 16:03:39 +0000 | [diff] [blame] | 1930 | void MacroAssembler::Trunc_uw_d(FPURegister fd, |
| 1931 | Register rs, |
| 1932 | FPURegister scratch) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1933 | DCHECK(!fd.is(scratch)); |
| 1934 | DCHECK(!rs.is(at)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1935 | |
Ben Murdoch | 69a99ed | 2011-11-30 16:03:39 +0000 | [diff] [blame] | 1936 | // Load 2^31 into scratch as its float representation. |
| 1937 | li(at, 0x41E00000); |
Ben Murdoch | 69a99ed | 2011-11-30 16:03:39 +0000 | [diff] [blame] | 1938 | mtc1(zero_reg, scratch); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1939 | Mthc1(at, scratch); |
Ben Murdoch | 69a99ed | 2011-11-30 16:03:39 +0000 | [diff] [blame] | 1940 | // Test if scratch > fd. |
Ben Murdoch | 85b7179 | 2012-04-11 18:30:58 +0100 | [diff] [blame] | 1941 | // If fd < 2^31 we can convert it normally. |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1942 | Label simple_convert; |
| 1943 | BranchF(&simple_convert, NULL, lt, fd, scratch); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1944 | |
| 1945 | // First we subtract 2^31 from fd, then trunc it to rs |
| 1946 | // and add 2^31 to rs. |
Ben Murdoch | 69a99ed | 2011-11-30 16:03:39 +0000 | [diff] [blame] | 1947 | sub_d(scratch, fd, scratch); |
| 1948 | trunc_w_d(scratch, scratch); |
| 1949 | mfc1(rs, scratch); |
| 1950 | Or(rs, rs, 1 << 31); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1951 | |
| 1952 | Label done; |
| 1953 | Branch(&done); |
| 1954 | // Simple conversion. |
| 1955 | bind(&simple_convert); |
Ben Murdoch | 69a99ed | 2011-11-30 16:03:39 +0000 | [diff] [blame] | 1956 | trunc_w_d(scratch, fd); |
| 1957 | mfc1(rs, scratch); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1958 | |
| 1959 | bind(&done); |
| 1960 | } |
| 1961 | |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 1962 | void MacroAssembler::Trunc_uw_s(FPURegister fd, Register rs, |
| 1963 | FPURegister scratch) { |
| 1964 | DCHECK(!fd.is(scratch)); |
| 1965 | DCHECK(!rs.is(at)); |
| 1966 | |
| 1967 | // Load 2^31 into scratch as its float representation. |
| 1968 | li(at, 0x4F000000); |
| 1969 | mtc1(at, scratch); |
| 1970 | // Test if scratch > fd. |
| 1971 | // If fd < 2^31 we can convert it normally. |
| 1972 | Label simple_convert; |
| 1973 | BranchF32(&simple_convert, NULL, lt, fd, scratch); |
| 1974 | |
| 1975 | // First we subtract 2^31 from fd, then trunc it to rs |
| 1976 | // and add 2^31 to rs. |
| 1977 | sub_s(scratch, fd, scratch); |
| 1978 | trunc_w_s(scratch, scratch); |
| 1979 | mfc1(rs, scratch); |
| 1980 | Or(rs, rs, 1 << 31); |
| 1981 | |
| 1982 | Label done; |
| 1983 | Branch(&done); |
| 1984 | // Simple conversion. |
| 1985 | bind(&simple_convert); |
| 1986 | trunc_w_s(scratch, fd); |
| 1987 | mfc1(rs, scratch); |
| 1988 | |
| 1989 | bind(&done); |
| 1990 | } |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1991 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1992 | void MacroAssembler::Mthc1(Register rt, FPURegister fs) { |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 1993 | if (IsFp32Mode()) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1994 | mtc1(rt, fs.high()); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 1995 | } else { |
| 1996 | DCHECK(IsFp64Mode() || IsFpxxMode()); |
| 1997 | DCHECK(IsMipsArchVariant(kMips32r2) || IsMipsArchVariant(kMips32r6)); |
| 1998 | mthc1(rt, fs); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1999 | } |
| 2000 | } |
| 2001 | |
| 2002 | |
| 2003 | void MacroAssembler::Mfhc1(Register rt, FPURegister fs) { |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 2004 | if (IsFp32Mode()) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2005 | mfc1(rt, fs.high()); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 2006 | } else { |
| 2007 | DCHECK(IsFp64Mode() || IsFpxxMode()); |
| 2008 | DCHECK(IsMipsArchVariant(kMips32r2) || IsMipsArchVariant(kMips32r6)); |
| 2009 | mfhc1(rt, fs); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2010 | } |
| 2011 | } |
| 2012 | |
| 2013 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2014 | void MacroAssembler::BranchFCommon(SecondaryField sizeField, Label* target, |
| 2015 | Label* nan, Condition cond, FPURegister cmp1, |
| 2016 | FPURegister cmp2, BranchDelaySlot bd) { |
| 2017 | { |
| 2018 | BlockTrampolinePoolScope block_trampoline_pool(this); |
| 2019 | if (cond == al) { |
| 2020 | Branch(bd, target); |
| 2021 | return; |
| 2022 | } |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2023 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2024 | if (IsMipsArchVariant(kMips32r6)) { |
| 2025 | sizeField = sizeField == D ? L : W; |
| 2026 | } |
| 2027 | DCHECK(nan || target); |
| 2028 | // Check for unordered (NaN) cases. |
| 2029 | if (nan) { |
| 2030 | bool long_branch = |
| 2031 | nan->is_bound() ? is_near(nan) : is_trampoline_emitted(); |
| 2032 | if (!IsMipsArchVariant(kMips32r6)) { |
| 2033 | if (long_branch) { |
| 2034 | Label skip; |
| 2035 | c(UN, sizeField, cmp1, cmp2); |
| 2036 | bc1f(&skip); |
| 2037 | nop(); |
| 2038 | BranchLong(nan, bd); |
| 2039 | bind(&skip); |
| 2040 | } else { |
| 2041 | c(UN, sizeField, cmp1, cmp2); |
| 2042 | bc1t(nan); |
| 2043 | if (bd == PROTECT) { |
| 2044 | nop(); |
| 2045 | } |
| 2046 | } |
| 2047 | } else { |
| 2048 | // Use kDoubleCompareReg for comparison result. It has to be unavailable |
| 2049 | // to lithium register allocator. |
| 2050 | DCHECK(!cmp1.is(kDoubleCompareReg) && !cmp2.is(kDoubleCompareReg)); |
| 2051 | if (long_branch) { |
| 2052 | Label skip; |
| 2053 | cmp(UN, sizeField, kDoubleCompareReg, cmp1, cmp2); |
| 2054 | bc1eqz(&skip, kDoubleCompareReg); |
| 2055 | nop(); |
| 2056 | BranchLong(nan, bd); |
| 2057 | bind(&skip); |
| 2058 | } else { |
| 2059 | cmp(UN, sizeField, kDoubleCompareReg, cmp1, cmp2); |
| 2060 | bc1nez(nan, kDoubleCompareReg); |
| 2061 | if (bd == PROTECT) { |
| 2062 | nop(); |
| 2063 | } |
| 2064 | } |
| 2065 | } |
| 2066 | } |
| 2067 | |
| 2068 | if (target) { |
| 2069 | bool long_branch = |
| 2070 | target->is_bound() ? is_near(target) : is_trampoline_emitted(); |
| 2071 | if (long_branch) { |
| 2072 | Label skip; |
| 2073 | Condition neg_cond = NegateFpuCondition(cond); |
| 2074 | BranchShortF(sizeField, &skip, neg_cond, cmp1, cmp2, bd); |
| 2075 | BranchLong(target, bd); |
| 2076 | bind(&skip); |
| 2077 | } else { |
| 2078 | BranchShortF(sizeField, target, cond, cmp1, cmp2, bd); |
| 2079 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2080 | } |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2081 | } |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2082 | } |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2083 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2084 | void MacroAssembler::BranchShortF(SecondaryField sizeField, Label* target, |
| 2085 | Condition cc, FPURegister cmp1, |
| 2086 | FPURegister cmp2, BranchDelaySlot bd) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2087 | if (!IsMipsArchVariant(kMips32r6)) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2088 | BlockTrampolinePoolScope block_trampoline_pool(this); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2089 | if (target) { |
| 2090 | // Here NaN cases were either handled by this function or are assumed to |
| 2091 | // have been handled by the caller. |
| 2092 | switch (cc) { |
| 2093 | case lt: |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2094 | c(OLT, sizeField, cmp1, cmp2); |
| 2095 | bc1t(target); |
| 2096 | break; |
| 2097 | case ult: |
| 2098 | c(ULT, sizeField, cmp1, cmp2); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2099 | bc1t(target); |
| 2100 | break; |
| 2101 | case gt: |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2102 | c(ULE, sizeField, cmp1, cmp2); |
| 2103 | bc1f(target); |
| 2104 | break; |
| 2105 | case ugt: |
| 2106 | c(OLE, sizeField, cmp1, cmp2); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2107 | bc1f(target); |
| 2108 | break; |
| 2109 | case ge: |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2110 | c(ULT, sizeField, cmp1, cmp2); |
| 2111 | bc1f(target); |
| 2112 | break; |
| 2113 | case uge: |
| 2114 | c(OLT, sizeField, cmp1, cmp2); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2115 | bc1f(target); |
| 2116 | break; |
| 2117 | case le: |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2118 | c(OLE, sizeField, cmp1, cmp2); |
| 2119 | bc1t(target); |
| 2120 | break; |
| 2121 | case ule: |
| 2122 | c(ULE, sizeField, cmp1, cmp2); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2123 | bc1t(target); |
| 2124 | break; |
| 2125 | case eq: |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2126 | c(EQ, sizeField, cmp1, cmp2); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2127 | bc1t(target); |
| 2128 | break; |
| 2129 | case ueq: |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2130 | c(UEQ, sizeField, cmp1, cmp2); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2131 | bc1t(target); |
| 2132 | break; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2133 | case ne: // Unordered or not equal. |
| 2134 | c(EQ, sizeField, cmp1, cmp2); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2135 | bc1f(target); |
| 2136 | break; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2137 | case ogl: |
| 2138 | c(UEQ, sizeField, cmp1, cmp2); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2139 | bc1f(target); |
| 2140 | break; |
| 2141 | default: |
| 2142 | CHECK(0); |
| 2143 | } |
| 2144 | } |
| 2145 | } else { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2146 | BlockTrampolinePoolScope block_trampoline_pool(this); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2147 | if (target) { |
| 2148 | // Here NaN cases were either handled by this function or are assumed to |
| 2149 | // have been handled by the caller. |
| 2150 | // Unsigned conditions are treated as their signed counterpart. |
| 2151 | // Use kDoubleCompareReg for comparison result, it is |
| 2152 | // valid in fp64 (FR = 1) mode which is implied for mips32r6. |
| 2153 | DCHECK(!cmp1.is(kDoubleCompareReg) && !cmp2.is(kDoubleCompareReg)); |
| 2154 | switch (cc) { |
| 2155 | case lt: |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2156 | cmp(OLT, sizeField, kDoubleCompareReg, cmp1, cmp2); |
| 2157 | bc1nez(target, kDoubleCompareReg); |
| 2158 | break; |
| 2159 | case ult: |
| 2160 | cmp(ULT, sizeField, kDoubleCompareReg, cmp1, cmp2); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2161 | bc1nez(target, kDoubleCompareReg); |
| 2162 | break; |
| 2163 | case gt: |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2164 | cmp(ULE, sizeField, kDoubleCompareReg, cmp1, cmp2); |
| 2165 | bc1eqz(target, kDoubleCompareReg); |
| 2166 | break; |
| 2167 | case ugt: |
| 2168 | cmp(OLE, sizeField, kDoubleCompareReg, cmp1, cmp2); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2169 | bc1eqz(target, kDoubleCompareReg); |
| 2170 | break; |
| 2171 | case ge: |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2172 | cmp(ULT, sizeField, kDoubleCompareReg, cmp1, cmp2); |
| 2173 | bc1eqz(target, kDoubleCompareReg); |
| 2174 | break; |
| 2175 | case uge: |
| 2176 | cmp(OLT, sizeField, kDoubleCompareReg, cmp1, cmp2); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2177 | bc1eqz(target, kDoubleCompareReg); |
| 2178 | break; |
| 2179 | case le: |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2180 | cmp(OLE, sizeField, kDoubleCompareReg, cmp1, cmp2); |
| 2181 | bc1nez(target, kDoubleCompareReg); |
| 2182 | break; |
| 2183 | case ule: |
| 2184 | cmp(ULE, sizeField, kDoubleCompareReg, cmp1, cmp2); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2185 | bc1nez(target, kDoubleCompareReg); |
| 2186 | break; |
| 2187 | case eq: |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2188 | cmp(EQ, sizeField, kDoubleCompareReg, cmp1, cmp2); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2189 | bc1nez(target, kDoubleCompareReg); |
| 2190 | break; |
| 2191 | case ueq: |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2192 | cmp(UEQ, sizeField, kDoubleCompareReg, cmp1, cmp2); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2193 | bc1nez(target, kDoubleCompareReg); |
| 2194 | break; |
| 2195 | case ne: |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2196 | cmp(EQ, sizeField, kDoubleCompareReg, cmp1, cmp2); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2197 | bc1eqz(target, kDoubleCompareReg); |
| 2198 | break; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2199 | case ogl: |
| 2200 | cmp(UEQ, sizeField, kDoubleCompareReg, cmp1, cmp2); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2201 | bc1eqz(target, kDoubleCompareReg); |
| 2202 | break; |
| 2203 | default: |
| 2204 | CHECK(0); |
| 2205 | } |
| 2206 | } |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2207 | } |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2208 | if (bd == PROTECT) { |
| 2209 | nop(); |
| 2210 | } |
| 2211 | } |
| 2212 | |
| 2213 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2214 | void MacroAssembler::FmoveLow(FPURegister dst, Register src_low) { |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 2215 | if (IsFp32Mode()) { |
| 2216 | mtc1(src_low, dst); |
| 2217 | } else { |
| 2218 | DCHECK(IsFp64Mode() || IsFpxxMode()); |
| 2219 | DCHECK(IsMipsArchVariant(kMips32r2) || IsMipsArchVariant(kMips32r6)); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2220 | DCHECK(!src_low.is(at)); |
| 2221 | mfhc1(at, dst); |
| 2222 | mtc1(src_low, dst); |
| 2223 | mthc1(at, dst); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2224 | } |
| 2225 | } |
| 2226 | |
| 2227 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 2228 | void MacroAssembler::Move(FPURegister dst, float imm) { |
| 2229 | li(at, Operand(bit_cast<int32_t>(imm))); |
| 2230 | mtc1(at, dst); |
| 2231 | } |
| 2232 | |
| 2233 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2234 | void MacroAssembler::Move(FPURegister dst, double imm) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2235 | static const DoubleRepresentation minus_zero(-0.0); |
| 2236 | static const DoubleRepresentation zero(0.0); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2237 | DoubleRepresentation value_rep(imm); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2238 | // Handle special values first. |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 2239 | if (value_rep == zero && has_double_zero_reg_set_) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2240 | mov_d(dst, kDoubleRegZero); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 2241 | } else if (value_rep == minus_zero && has_double_zero_reg_set_) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2242 | neg_d(dst, kDoubleRegZero); |
| 2243 | } else { |
| 2244 | uint32_t lo, hi; |
| 2245 | DoubleAsTwoUInt32(imm, &lo, &hi); |
| 2246 | // Move the low part of the double into the lower of the corresponding FPU |
| 2247 | // register of FPU register pair. |
| 2248 | if (lo != 0) { |
| 2249 | li(at, Operand(lo)); |
| 2250 | mtc1(at, dst); |
| 2251 | } else { |
| 2252 | mtc1(zero_reg, dst); |
| 2253 | } |
| 2254 | // Move the high part of the double into the higher of the corresponding FPU |
| 2255 | // register of FPU register pair. |
| 2256 | if (hi != 0) { |
| 2257 | li(at, Operand(hi)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2258 | Mthc1(at, dst); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2259 | } else { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2260 | Mthc1(zero_reg, dst); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2261 | } |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 2262 | if (dst.is(kDoubleRegZero)) has_double_zero_reg_set_ = true; |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2263 | } |
| 2264 | } |
| 2265 | |
| 2266 | |
| 2267 | void MacroAssembler::Movz(Register rd, Register rs, Register rt) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2268 | if (IsMipsArchVariant(kLoongson) || IsMipsArchVariant(kMips32r6)) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2269 | Label done; |
| 2270 | Branch(&done, ne, rt, Operand(zero_reg)); |
| 2271 | mov(rd, rs); |
| 2272 | bind(&done); |
| 2273 | } else { |
| 2274 | movz(rd, rs, rt); |
| 2275 | } |
| 2276 | } |
| 2277 | |
| 2278 | |
| 2279 | void MacroAssembler::Movn(Register rd, Register rs, Register rt) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2280 | if (IsMipsArchVariant(kLoongson) || IsMipsArchVariant(kMips32r6)) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2281 | Label done; |
| 2282 | Branch(&done, eq, rt, Operand(zero_reg)); |
| 2283 | mov(rd, rs); |
| 2284 | bind(&done); |
| 2285 | } else { |
| 2286 | movn(rd, rs, rt); |
| 2287 | } |
| 2288 | } |
| 2289 | |
| 2290 | |
| 2291 | void MacroAssembler::Movt(Register rd, Register rs, uint16_t cc) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2292 | if (IsMipsArchVariant(kLoongson)) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2293 | // Tests an FP condition code and then conditionally move rs to rd. |
| 2294 | // 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] | 2295 | DCHECK(cc == 0); |
| 2296 | DCHECK(!(rs.is(t8) || rd.is(t8))); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2297 | Label done; |
| 2298 | Register scratch = t8; |
| 2299 | // For testing purposes we need to fetch content of the FCSR register and |
| 2300 | // than test its cc (floating point condition code) bit (for cc = 0, it is |
| 2301 | // 24. bit of the FCSR). |
| 2302 | cfc1(scratch, FCSR); |
| 2303 | // For the MIPS I, II and III architectures, the contents of scratch is |
| 2304 | // UNPREDICTABLE for the instruction immediately following CFC1. |
| 2305 | nop(); |
| 2306 | srl(scratch, scratch, 16); |
| 2307 | andi(scratch, scratch, 0x0080); |
| 2308 | Branch(&done, eq, scratch, Operand(zero_reg)); |
| 2309 | mov(rd, rs); |
| 2310 | bind(&done); |
| 2311 | } else { |
| 2312 | movt(rd, rs, cc); |
| 2313 | } |
| 2314 | } |
| 2315 | |
| 2316 | |
| 2317 | void MacroAssembler::Movf(Register rd, Register rs, uint16_t cc) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2318 | if (IsMipsArchVariant(kLoongson)) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2319 | // Tests an FP condition code and then conditionally move rs to rd. |
| 2320 | // 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] | 2321 | DCHECK(cc == 0); |
| 2322 | DCHECK(!(rs.is(t8) || rd.is(t8))); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2323 | Label done; |
| 2324 | Register scratch = t8; |
| 2325 | // For testing purposes we need to fetch content of the FCSR register and |
| 2326 | // than test its cc (floating point condition code) bit (for cc = 0, it is |
| 2327 | // 24. bit of the FCSR). |
| 2328 | cfc1(scratch, FCSR); |
| 2329 | // For the MIPS I, II and III architectures, the contents of scratch is |
| 2330 | // UNPREDICTABLE for the instruction immediately following CFC1. |
| 2331 | nop(); |
| 2332 | srl(scratch, scratch, 16); |
| 2333 | andi(scratch, scratch, 0x0080); |
| 2334 | Branch(&done, ne, scratch, Operand(zero_reg)); |
| 2335 | mov(rd, rs); |
| 2336 | bind(&done); |
| 2337 | } else { |
| 2338 | movf(rd, rs, cc); |
| 2339 | } |
| 2340 | } |
| 2341 | |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 2342 | #define __ masm-> |
| 2343 | |
| 2344 | static bool ZeroHelper_d(MacroAssembler* masm, MaxMinKind kind, FPURegister dst, |
| 2345 | FPURegister src1, FPURegister src2, Label* equal) { |
| 2346 | if (src1.is(src2)) { |
| 2347 | __ Move(dst, src1); |
| 2348 | return true; |
| 2349 | } |
| 2350 | |
| 2351 | Label other, compare_not_equal; |
| 2352 | FPURegister left, right; |
| 2353 | if (kind == MaxMinKind::kMin) { |
| 2354 | left = src1; |
| 2355 | right = src2; |
| 2356 | } else { |
| 2357 | left = src2; |
| 2358 | right = src1; |
| 2359 | } |
| 2360 | |
| 2361 | __ BranchF64(&compare_not_equal, nullptr, ne, src1, src2); |
| 2362 | // Left and right hand side are equal, check for -0 vs. +0. |
| 2363 | __ FmoveHigh(t8, src1); |
| 2364 | __ Branch(&other, eq, t8, Operand(0x80000000)); |
| 2365 | __ Move_d(dst, right); |
| 2366 | __ Branch(equal); |
| 2367 | __ bind(&other); |
| 2368 | __ Move_d(dst, left); |
| 2369 | __ Branch(equal); |
| 2370 | __ bind(&compare_not_equal); |
| 2371 | return false; |
| 2372 | } |
| 2373 | |
| 2374 | static bool ZeroHelper_s(MacroAssembler* masm, MaxMinKind kind, FPURegister dst, |
| 2375 | FPURegister src1, FPURegister src2, Label* equal) { |
| 2376 | if (src1.is(src2)) { |
| 2377 | __ Move(dst, src1); |
| 2378 | return true; |
| 2379 | } |
| 2380 | |
| 2381 | Label other, compare_not_equal; |
| 2382 | FPURegister left, right; |
| 2383 | if (kind == MaxMinKind::kMin) { |
| 2384 | left = src1; |
| 2385 | right = src2; |
| 2386 | } else { |
| 2387 | left = src2; |
| 2388 | right = src1; |
| 2389 | } |
| 2390 | |
| 2391 | __ BranchF32(&compare_not_equal, nullptr, ne, src1, src2); |
| 2392 | // Left and right hand side are equal, check for -0 vs. +0. |
| 2393 | __ FmoveLow(t8, src1); |
| 2394 | __ Branch(&other, eq, t8, Operand(0x80000000)); |
| 2395 | __ Move_s(dst, right); |
| 2396 | __ Branch(equal); |
| 2397 | __ bind(&other); |
| 2398 | __ Move_s(dst, left); |
| 2399 | __ Branch(equal); |
| 2400 | __ bind(&compare_not_equal); |
| 2401 | return false; |
| 2402 | } |
| 2403 | |
| 2404 | #undef __ |
| 2405 | |
| 2406 | void MacroAssembler::MinNaNCheck_d(FPURegister dst, FPURegister src1, |
| 2407 | FPURegister src2, Label* nan) { |
| 2408 | if (nan) { |
| 2409 | BranchF64(nullptr, nan, eq, src1, src2); |
| 2410 | } |
| 2411 | if (IsMipsArchVariant(kMips32r6)) { |
| 2412 | min_d(dst, src1, src2); |
| 2413 | } else { |
| 2414 | Label skip; |
| 2415 | if (!ZeroHelper_d(this, MaxMinKind::kMin, dst, src1, src2, &skip)) { |
| 2416 | if (dst.is(src1)) { |
| 2417 | BranchF64(&skip, nullptr, le, src1, src2); |
| 2418 | Move_d(dst, src2); |
| 2419 | } else if (dst.is(src2)) { |
| 2420 | BranchF64(&skip, nullptr, ge, src1, src2); |
| 2421 | Move_d(dst, src1); |
| 2422 | } else { |
| 2423 | Label right; |
| 2424 | BranchF64(&right, nullptr, gt, src1, src2); |
| 2425 | Move_d(dst, src1); |
| 2426 | Branch(&skip); |
| 2427 | bind(&right); |
| 2428 | Move_d(dst, src2); |
| 2429 | } |
| 2430 | } |
| 2431 | bind(&skip); |
| 2432 | } |
| 2433 | } |
| 2434 | |
| 2435 | void MacroAssembler::MaxNaNCheck_d(FPURegister dst, FPURegister src1, |
| 2436 | FPURegister src2, Label* nan) { |
| 2437 | if (nan) { |
| 2438 | BranchF64(nullptr, nan, eq, src1, src2); |
| 2439 | } |
| 2440 | if (IsMipsArchVariant(kMips32r6)) { |
| 2441 | max_d(dst, src1, src2); |
| 2442 | } else { |
| 2443 | Label skip; |
| 2444 | if (!ZeroHelper_d(this, MaxMinKind::kMax, dst, src1, src2, &skip)) { |
| 2445 | if (dst.is(src1)) { |
| 2446 | BranchF64(&skip, nullptr, ge, src1, src2); |
| 2447 | Move_d(dst, src2); |
| 2448 | } else if (dst.is(src2)) { |
| 2449 | BranchF64(&skip, nullptr, le, src1, src2); |
| 2450 | Move_d(dst, src1); |
| 2451 | } else { |
| 2452 | Label right; |
| 2453 | BranchF64(&right, nullptr, lt, src1, src2); |
| 2454 | Move_d(dst, src1); |
| 2455 | Branch(&skip); |
| 2456 | bind(&right); |
| 2457 | Move_d(dst, src2); |
| 2458 | } |
| 2459 | } |
| 2460 | bind(&skip); |
| 2461 | } |
| 2462 | } |
| 2463 | |
| 2464 | void MacroAssembler::MinNaNCheck_s(FPURegister dst, FPURegister src1, |
| 2465 | FPURegister src2, Label* nan) { |
| 2466 | if (nan) { |
| 2467 | BranchF32(nullptr, nan, eq, src1, src2); |
| 2468 | } |
| 2469 | if (IsMipsArchVariant(kMips32r6)) { |
| 2470 | min_s(dst, src1, src2); |
| 2471 | } else { |
| 2472 | Label skip; |
| 2473 | if (!ZeroHelper_s(this, MaxMinKind::kMin, dst, src1, src2, &skip)) { |
| 2474 | if (dst.is(src1)) { |
| 2475 | BranchF32(&skip, nullptr, le, src1, src2); |
| 2476 | Move_s(dst, src2); |
| 2477 | } else if (dst.is(src2)) { |
| 2478 | BranchF32(&skip, nullptr, ge, src1, src2); |
| 2479 | Move_s(dst, src1); |
| 2480 | } else { |
| 2481 | Label right; |
| 2482 | BranchF32(&right, nullptr, gt, src1, src2); |
| 2483 | Move_s(dst, src1); |
| 2484 | Branch(&skip); |
| 2485 | bind(&right); |
| 2486 | Move_s(dst, src2); |
| 2487 | } |
| 2488 | } |
| 2489 | bind(&skip); |
| 2490 | } |
| 2491 | } |
| 2492 | |
| 2493 | void MacroAssembler::MaxNaNCheck_s(FPURegister dst, FPURegister src1, |
| 2494 | FPURegister src2, Label* nan) { |
| 2495 | if (nan) { |
| 2496 | BranchF32(nullptr, nan, eq, src1, src2); |
| 2497 | } |
| 2498 | if (IsMipsArchVariant(kMips32r6)) { |
| 2499 | max_s(dst, src1, src2); |
| 2500 | } else { |
| 2501 | Label skip; |
| 2502 | if (!ZeroHelper_s(this, MaxMinKind::kMax, dst, src1, src2, &skip)) { |
| 2503 | if (dst.is(src1)) { |
| 2504 | BranchF32(&skip, nullptr, ge, src1, src2); |
| 2505 | Move_s(dst, src2); |
| 2506 | } else if (dst.is(src2)) { |
| 2507 | BranchF32(&skip, nullptr, le, src1, src2); |
| 2508 | Move_s(dst, src1); |
| 2509 | } else { |
| 2510 | Label right; |
| 2511 | BranchF32(&right, nullptr, lt, src1, src2); |
| 2512 | Move_s(dst, src1); |
| 2513 | Branch(&skip); |
| 2514 | bind(&right); |
| 2515 | Move_s(dst, src2); |
| 2516 | } |
| 2517 | } |
| 2518 | bind(&skip); |
| 2519 | } |
| 2520 | } |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2521 | |
| 2522 | void MacroAssembler::Clz(Register rd, Register rs) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2523 | if (IsMipsArchVariant(kLoongson)) { |
| 2524 | 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] | 2525 | Register mask = t8; |
| 2526 | Register scratch = t9; |
| 2527 | Label loop, end; |
| 2528 | mov(at, rs); |
| 2529 | mov(rd, zero_reg); |
| 2530 | lui(mask, 0x8000); |
| 2531 | bind(&loop); |
| 2532 | and_(scratch, at, mask); |
| 2533 | Branch(&end, ne, scratch, Operand(zero_reg)); |
| 2534 | addiu(rd, rd, 1); |
| 2535 | Branch(&loop, ne, mask, Operand(zero_reg), USE_DELAY_SLOT); |
| 2536 | srl(mask, mask, 1); |
| 2537 | bind(&end); |
| 2538 | } else { |
| 2539 | clz(rd, rs); |
| 2540 | } |
| 2541 | } |
| 2542 | |
| 2543 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2544 | void MacroAssembler::EmitFPUTruncate(FPURoundingMode rounding_mode, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2545 | Register result, |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2546 | DoubleRegister double_input, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2547 | Register scratch, |
| 2548 | DoubleRegister double_scratch, |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2549 | Register except_flag, |
| 2550 | CheckForInexactConversion check_inexact) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2551 | DCHECK(!result.is(scratch)); |
| 2552 | DCHECK(!double_input.is(double_scratch)); |
| 2553 | DCHECK(!except_flag.is(scratch)); |
| 2554 | |
| 2555 | Label done; |
| 2556 | |
| 2557 | // Clear the except flag (0 = no exception) |
| 2558 | mov(except_flag, zero_reg); |
| 2559 | |
| 2560 | // Test for values that can be exactly represented as a signed 32-bit integer. |
| 2561 | cvt_w_d(double_scratch, double_input); |
| 2562 | mfc1(result, double_scratch); |
| 2563 | cvt_d_w(double_scratch, double_scratch); |
| 2564 | BranchF(&done, NULL, eq, double_input, double_scratch); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2565 | |
| 2566 | int32_t except_mask = kFCSRFlagMask; // Assume interested in all exceptions. |
| 2567 | |
| 2568 | if (check_inexact == kDontCheckForInexactConversion) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2569 | // Ignore inexact exceptions. |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2570 | except_mask &= ~kFCSRInexactFlagMask; |
| 2571 | } |
| 2572 | |
| 2573 | // Save FCSR. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2574 | cfc1(scratch, FCSR); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2575 | // Disable FPU exceptions. |
| 2576 | ctc1(zero_reg, FCSR); |
| 2577 | |
| 2578 | // Do operation based on rounding mode. |
| 2579 | switch (rounding_mode) { |
| 2580 | case kRoundToNearest: |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2581 | Round_w_d(double_scratch, double_input); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2582 | break; |
| 2583 | case kRoundToZero: |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2584 | Trunc_w_d(double_scratch, double_input); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2585 | break; |
| 2586 | case kRoundToPlusInf: |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2587 | Ceil_w_d(double_scratch, double_input); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2588 | break; |
| 2589 | case kRoundToMinusInf: |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2590 | Floor_w_d(double_scratch, double_input); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2591 | break; |
| 2592 | } // End of switch-statement. |
| 2593 | |
| 2594 | // Retrieve FCSR. |
| 2595 | cfc1(except_flag, FCSR); |
| 2596 | // Restore FCSR. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2597 | ctc1(scratch, FCSR); |
| 2598 | // Move the converted value into the result register. |
| 2599 | mfc1(result, double_scratch); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2600 | |
| 2601 | // Check for fpu exceptions. |
| 2602 | And(except_flag, except_flag, Operand(except_mask)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2603 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2604 | bind(&done); |
| 2605 | } |
| 2606 | |
| 2607 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2608 | void MacroAssembler::TryInlineTruncateDoubleToI(Register result, |
| 2609 | DoubleRegister double_input, |
| 2610 | Label* done) { |
| 2611 | DoubleRegister single_scratch = kLithiumScratchDouble.low(); |
| 2612 | Register scratch = at; |
| 2613 | Register scratch2 = t9; |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 2614 | |
| 2615 | // Clear cumulative exception flags and save the FCSR. |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 2616 | cfc1(scratch2, FCSR); |
| 2617 | ctc1(zero_reg, FCSR); |
| 2618 | // Try a conversion to a signed integer. |
| 2619 | trunc_w_d(single_scratch, double_input); |
| 2620 | mfc1(result, single_scratch); |
| 2621 | // Retrieve and restore the FCSR. |
| 2622 | cfc1(scratch, FCSR); |
| 2623 | ctc1(scratch2, FCSR); |
| 2624 | // Check for overflow and NaNs. |
| 2625 | And(scratch, |
| 2626 | scratch, |
| 2627 | kFCSROverflowFlagMask | kFCSRUnderflowFlagMask | kFCSRInvalidOpFlagMask); |
| 2628 | // If we had no exceptions we are done. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2629 | Branch(done, eq, scratch, Operand(zero_reg)); |
| 2630 | } |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 2631 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2632 | |
| 2633 | void MacroAssembler::TruncateDoubleToI(Register result, |
| 2634 | DoubleRegister double_input) { |
| 2635 | Label done; |
| 2636 | |
| 2637 | TryInlineTruncateDoubleToI(result, double_input, &done); |
| 2638 | |
| 2639 | // If we fell through then inline version didn't succeed - call stub instead. |
| 2640 | push(ra); |
| 2641 | Subu(sp, sp, Operand(kDoubleSize)); // Put input on stack. |
| 2642 | sdc1(double_input, MemOperand(sp, 0)); |
| 2643 | |
| 2644 | DoubleToIStub stub(isolate(), sp, result, 0, true, true); |
| 2645 | CallStub(&stub); |
| 2646 | |
| 2647 | Addu(sp, sp, Operand(kDoubleSize)); |
| 2648 | pop(ra); |
| 2649 | |
| 2650 | bind(&done); |
| 2651 | } |
| 2652 | |
| 2653 | |
| 2654 | void MacroAssembler::TruncateHeapNumberToI(Register result, Register object) { |
| 2655 | Label done; |
| 2656 | DoubleRegister double_scratch = f12; |
| 2657 | DCHECK(!result.is(object)); |
| 2658 | |
| 2659 | ldc1(double_scratch, |
| 2660 | MemOperand(object, HeapNumber::kValueOffset - kHeapObjectTag)); |
| 2661 | TryInlineTruncateDoubleToI(result, double_scratch, &done); |
| 2662 | |
| 2663 | // If we fell through then inline version didn't succeed - call stub instead. |
| 2664 | push(ra); |
| 2665 | DoubleToIStub stub(isolate(), |
| 2666 | object, |
| 2667 | result, |
| 2668 | HeapNumber::kValueOffset - kHeapObjectTag, |
| 2669 | true, |
| 2670 | true); |
| 2671 | CallStub(&stub); |
| 2672 | pop(ra); |
| 2673 | |
| 2674 | bind(&done); |
| 2675 | } |
| 2676 | |
| 2677 | |
| 2678 | void MacroAssembler::TruncateNumberToI(Register object, |
| 2679 | Register result, |
| 2680 | Register heap_number_map, |
| 2681 | Register scratch, |
| 2682 | Label* not_number) { |
| 2683 | Label done; |
| 2684 | DCHECK(!result.is(object)); |
| 2685 | |
| 2686 | UntagAndJumpIfSmi(result, object, &done); |
| 2687 | JumpIfNotHeapNumber(object, heap_number_map, scratch, not_number); |
| 2688 | TruncateHeapNumberToI(result, object); |
| 2689 | |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 2690 | bind(&done); |
| 2691 | } |
| 2692 | |
| 2693 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2694 | void MacroAssembler::GetLeastBitsFromSmi(Register dst, |
| 2695 | Register src, |
| 2696 | int num_least_bits) { |
| 2697 | Ext(dst, src, kSmiTagSize, num_least_bits); |
| 2698 | } |
| 2699 | |
| 2700 | |
| 2701 | void MacroAssembler::GetLeastBitsFromInt32(Register dst, |
| 2702 | Register src, |
| 2703 | int num_least_bits) { |
| 2704 | And(dst, src, Operand((1 << num_least_bits) - 1)); |
| 2705 | } |
| 2706 | |
| 2707 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2708 | // Emulated condtional branches do not emit a nop in the branch delay slot. |
| 2709 | // |
| 2710 | // BRANCH_ARGS_CHECK checks that conditional jump arguments are correct. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2711 | #define BRANCH_ARGS_CHECK(cond, rs, rt) DCHECK( \ |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2712 | (cond == cc_always && rs.is(zero_reg) && rt.rm().is(zero_reg)) || \ |
| 2713 | (cond != cc_always && (!rs.is(zero_reg) || !rt.rm().is(zero_reg)))) |
| 2714 | |
| 2715 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2716 | void MacroAssembler::Branch(int32_t offset, BranchDelaySlot bdslot) { |
| 2717 | DCHECK(IsMipsArchVariant(kMips32r6) ? is_int26(offset) : is_int16(offset)); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 2718 | BranchShort(offset, bdslot); |
| 2719 | } |
| 2720 | |
| 2721 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2722 | void MacroAssembler::Branch(int32_t offset, Condition cond, Register rs, |
| 2723 | const Operand& rt, BranchDelaySlot bdslot) { |
| 2724 | bool is_near = BranchShortCheck(offset, nullptr, cond, rs, rt, bdslot); |
| 2725 | DCHECK(is_near); |
| 2726 | USE(is_near); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 2727 | } |
| 2728 | |
| 2729 | |
| 2730 | void MacroAssembler::Branch(Label* L, BranchDelaySlot bdslot) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2731 | if (L->is_bound()) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2732 | if (is_near_branch(L)) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2733 | BranchShort(L, bdslot); |
| 2734 | } else { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2735 | BranchLong(L, bdslot); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2736 | } |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 2737 | } else { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2738 | if (is_trampoline_emitted()) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2739 | BranchLong(L, bdslot); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2740 | } else { |
| 2741 | BranchShort(L, bdslot); |
| 2742 | } |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 2743 | } |
| 2744 | } |
| 2745 | |
| 2746 | |
| 2747 | void MacroAssembler::Branch(Label* L, Condition cond, Register rs, |
| 2748 | const Operand& rt, |
| 2749 | BranchDelaySlot bdslot) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2750 | if (L->is_bound()) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2751 | if (!BranchShortCheck(0, L, cond, rs, rt, bdslot)) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2752 | if (cond != cc_always) { |
| 2753 | Label skip; |
| 2754 | Condition neg_cond = NegateCondition(cond); |
| 2755 | BranchShort(&skip, neg_cond, rs, rt); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2756 | BranchLong(L, bdslot); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2757 | bind(&skip); |
| 2758 | } else { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2759 | BranchLong(L, bdslot); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2760 | } |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2761 | } |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 2762 | } else { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2763 | if (is_trampoline_emitted()) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2764 | if (cond != cc_always) { |
| 2765 | Label skip; |
| 2766 | Condition neg_cond = NegateCondition(cond); |
| 2767 | BranchShort(&skip, neg_cond, rs, rt); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2768 | BranchLong(L, bdslot); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2769 | bind(&skip); |
| 2770 | } else { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2771 | BranchLong(L, bdslot); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2772 | } |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2773 | } else { |
| 2774 | BranchShort(L, cond, rs, rt, bdslot); |
| 2775 | } |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 2776 | } |
| 2777 | } |
| 2778 | |
| 2779 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2780 | void MacroAssembler::Branch(Label* L, |
| 2781 | Condition cond, |
| 2782 | Register rs, |
| 2783 | Heap::RootListIndex index, |
| 2784 | BranchDelaySlot bdslot) { |
| 2785 | LoadRoot(at, index); |
| 2786 | Branch(L, cond, rs, Operand(at), bdslot); |
| 2787 | } |
| 2788 | |
| 2789 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2790 | void MacroAssembler::BranchShortHelper(int16_t offset, Label* L, |
| 2791 | BranchDelaySlot bdslot) { |
| 2792 | DCHECK(L == nullptr || offset == 0); |
| 2793 | offset = GetOffset(offset, L, OffsetSize::kOffset16); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2794 | b(offset); |
| 2795 | |
| 2796 | // Emit a nop in the branch delay slot if required. |
| 2797 | if (bdslot == PROTECT) |
| 2798 | nop(); |
| 2799 | } |
| 2800 | |
| 2801 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2802 | void MacroAssembler::BranchShortHelperR6(int32_t offset, Label* L) { |
| 2803 | DCHECK(L == nullptr || offset == 0); |
| 2804 | offset = GetOffset(offset, L, OffsetSize::kOffset26); |
| 2805 | bc(offset); |
| 2806 | } |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2807 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2808 | |
| 2809 | void MacroAssembler::BranchShort(int32_t offset, BranchDelaySlot bdslot) { |
| 2810 | if (IsMipsArchVariant(kMips32r6) && bdslot == PROTECT) { |
| 2811 | DCHECK(is_int26(offset)); |
| 2812 | BranchShortHelperR6(offset, nullptr); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2813 | } else { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2814 | DCHECK(is_int16(offset)); |
| 2815 | BranchShortHelper(offset, nullptr, bdslot); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 2816 | } |
| 2817 | } |
| 2818 | |
| 2819 | |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 2820 | void MacroAssembler::BranchShort(Label* L, BranchDelaySlot bdslot) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2821 | if (IsMipsArchVariant(kMips32r6) && bdslot == PROTECT) { |
| 2822 | BranchShortHelperR6(0, L); |
| 2823 | } else { |
| 2824 | BranchShortHelper(0, L, bdslot); |
| 2825 | } |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 2826 | } |
| 2827 | |
| 2828 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2829 | static inline bool IsZero(const Operand& rt) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2830 | if (rt.is_reg()) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2831 | return rt.rm().is(zero_reg); |
| 2832 | } else { |
| 2833 | return rt.immediate() == 0; |
| 2834 | } |
| 2835 | } |
| 2836 | |
| 2837 | |
| 2838 | int32_t MacroAssembler::GetOffset(int32_t offset, Label* L, OffsetSize bits) { |
| 2839 | if (L) { |
| 2840 | offset = branch_offset_helper(L, bits) >> 2; |
| 2841 | } else { |
| 2842 | DCHECK(is_intn(offset, bits)); |
| 2843 | } |
| 2844 | return offset; |
| 2845 | } |
| 2846 | |
| 2847 | |
| 2848 | Register MacroAssembler::GetRtAsRegisterHelper(const Operand& rt, |
| 2849 | Register scratch) { |
| 2850 | Register r2 = no_reg; |
| 2851 | if (rt.is_reg()) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2852 | r2 = rt.rm_; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2853 | } else { |
| 2854 | r2 = scratch; |
| 2855 | li(r2, rt); |
| 2856 | } |
| 2857 | |
| 2858 | return r2; |
| 2859 | } |
| 2860 | |
| 2861 | |
| 2862 | bool MacroAssembler::BranchShortHelperR6(int32_t offset, Label* L, |
| 2863 | Condition cond, Register rs, |
| 2864 | const Operand& rt) { |
| 2865 | DCHECK(L == nullptr || offset == 0); |
| 2866 | Register scratch = rs.is(at) ? t8 : at; |
| 2867 | OffsetSize bits = OffsetSize::kOffset16; |
| 2868 | |
| 2869 | // Be careful to always use shifted_branch_offset only just before the |
| 2870 | // branch instruction, as the location will be remember for patching the |
| 2871 | // target. |
| 2872 | { |
| 2873 | BlockTrampolinePoolScope block_trampoline_pool(this); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2874 | switch (cond) { |
| 2875 | case cc_always: |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2876 | bits = OffsetSize::kOffset26; |
| 2877 | if (!is_near(L, bits)) return false; |
| 2878 | offset = GetOffset(offset, L, bits); |
| 2879 | bc(offset); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2880 | break; |
| 2881 | case eq: |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2882 | if (rs.code() == rt.rm_.reg_code) { |
| 2883 | // Pre R6 beq is used here to make the code patchable. Otherwise bc |
| 2884 | // should be used which has no condition field so is not patchable. |
| 2885 | bits = OffsetSize::kOffset16; |
| 2886 | if (!is_near(L, bits)) return false; |
| 2887 | scratch = GetRtAsRegisterHelper(rt, scratch); |
| 2888 | offset = GetOffset(offset, L, bits); |
| 2889 | beq(rs, scratch, offset); |
| 2890 | nop(); |
| 2891 | } else if (IsZero(rt)) { |
| 2892 | bits = OffsetSize::kOffset21; |
| 2893 | if (!is_near(L, bits)) return false; |
| 2894 | offset = GetOffset(offset, L, bits); |
| 2895 | beqzc(rs, offset); |
| 2896 | } else { |
| 2897 | // We don't want any other register but scratch clobbered. |
| 2898 | bits = OffsetSize::kOffset16; |
| 2899 | if (!is_near(L, bits)) return false; |
| 2900 | scratch = GetRtAsRegisterHelper(rt, scratch); |
| 2901 | offset = GetOffset(offset, L, bits); |
| 2902 | beqc(rs, scratch, offset); |
| 2903 | } |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2904 | break; |
| 2905 | case ne: |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2906 | if (rs.code() == rt.rm_.reg_code) { |
| 2907 | // Pre R6 bne is used here to make the code patchable. Otherwise we |
| 2908 | // should not generate any instruction. |
| 2909 | bits = OffsetSize::kOffset16; |
| 2910 | if (!is_near(L, bits)) return false; |
| 2911 | scratch = GetRtAsRegisterHelper(rt, scratch); |
| 2912 | offset = GetOffset(offset, L, bits); |
| 2913 | bne(rs, scratch, offset); |
| 2914 | nop(); |
| 2915 | } else if (IsZero(rt)) { |
| 2916 | bits = OffsetSize::kOffset21; |
| 2917 | if (!is_near(L, bits)) return false; |
| 2918 | offset = GetOffset(offset, L, bits); |
| 2919 | bnezc(rs, offset); |
| 2920 | } else { |
| 2921 | // We don't want any other register but scratch clobbered. |
| 2922 | bits = OffsetSize::kOffset16; |
| 2923 | if (!is_near(L, bits)) return false; |
| 2924 | scratch = GetRtAsRegisterHelper(rt, scratch); |
| 2925 | offset = GetOffset(offset, L, bits); |
| 2926 | bnec(rs, scratch, offset); |
| 2927 | } |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2928 | break; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2929 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2930 | // Signed comparison. |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2931 | case greater: |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2932 | // rs > rt |
| 2933 | if (rs.code() == rt.rm_.reg_code) { |
| 2934 | break; // No code needs to be emitted. |
| 2935 | } else if (rs.is(zero_reg)) { |
| 2936 | bits = OffsetSize::kOffset16; |
| 2937 | if (!is_near(L, bits)) return false; |
| 2938 | scratch = GetRtAsRegisterHelper(rt, scratch); |
| 2939 | offset = GetOffset(offset, L, bits); |
| 2940 | bltzc(scratch, offset); |
| 2941 | } else if (IsZero(rt)) { |
| 2942 | bits = OffsetSize::kOffset16; |
| 2943 | if (!is_near(L, bits)) return false; |
| 2944 | offset = GetOffset(offset, L, bits); |
| 2945 | bgtzc(rs, offset); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2946 | } else { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2947 | bits = OffsetSize::kOffset16; |
| 2948 | if (!is_near(L, bits)) return false; |
| 2949 | scratch = GetRtAsRegisterHelper(rt, scratch); |
| 2950 | DCHECK(!rs.is(scratch)); |
| 2951 | offset = GetOffset(offset, L, bits); |
| 2952 | bltc(scratch, rs, offset); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2953 | } |
| 2954 | break; |
| 2955 | case greater_equal: |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2956 | // rs >= rt |
| 2957 | if (rs.code() == rt.rm_.reg_code) { |
| 2958 | bits = OffsetSize::kOffset26; |
| 2959 | if (!is_near(L, bits)) return false; |
| 2960 | offset = GetOffset(offset, L, bits); |
| 2961 | bc(offset); |
| 2962 | } else if (rs.is(zero_reg)) { |
| 2963 | bits = OffsetSize::kOffset16; |
| 2964 | if (!is_near(L, bits)) return false; |
| 2965 | scratch = GetRtAsRegisterHelper(rt, scratch); |
| 2966 | offset = GetOffset(offset, L, bits); |
| 2967 | blezc(scratch, offset); |
| 2968 | } else if (IsZero(rt)) { |
| 2969 | bits = OffsetSize::kOffset16; |
| 2970 | if (!is_near(L, bits)) return false; |
| 2971 | offset = GetOffset(offset, L, bits); |
| 2972 | bgezc(rs, offset); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2973 | } else { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2974 | bits = OffsetSize::kOffset16; |
| 2975 | if (!is_near(L, bits)) return false; |
| 2976 | scratch = GetRtAsRegisterHelper(rt, scratch); |
| 2977 | DCHECK(!rs.is(scratch)); |
| 2978 | offset = GetOffset(offset, L, bits); |
| 2979 | bgec(rs, scratch, offset); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2980 | } |
| 2981 | break; |
| 2982 | case less: |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2983 | // rs < rt |
| 2984 | if (rs.code() == rt.rm_.reg_code) { |
| 2985 | break; // No code needs to be emitted. |
| 2986 | } else if (rs.is(zero_reg)) { |
| 2987 | bits = OffsetSize::kOffset16; |
| 2988 | if (!is_near(L, bits)) return false; |
| 2989 | scratch = GetRtAsRegisterHelper(rt, scratch); |
| 2990 | offset = GetOffset(offset, L, bits); |
| 2991 | bgtzc(scratch, offset); |
| 2992 | } else if (IsZero(rt)) { |
| 2993 | bits = OffsetSize::kOffset16; |
| 2994 | if (!is_near(L, bits)) return false; |
| 2995 | offset = GetOffset(offset, L, bits); |
| 2996 | bltzc(rs, offset); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2997 | } else { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2998 | bits = OffsetSize::kOffset16; |
| 2999 | if (!is_near(L, bits)) return false; |
| 3000 | scratch = GetRtAsRegisterHelper(rt, scratch); |
| 3001 | DCHECK(!rs.is(scratch)); |
| 3002 | offset = GetOffset(offset, L, bits); |
| 3003 | bltc(rs, scratch, offset); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3004 | } |
| 3005 | break; |
| 3006 | case less_equal: |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3007 | // rs <= rt |
| 3008 | if (rs.code() == rt.rm_.reg_code) { |
| 3009 | bits = OffsetSize::kOffset26; |
| 3010 | if (!is_near(L, bits)) return false; |
| 3011 | offset = GetOffset(offset, L, bits); |
| 3012 | bc(offset); |
| 3013 | } else if (rs.is(zero_reg)) { |
| 3014 | bits = OffsetSize::kOffset16; |
| 3015 | if (!is_near(L, bits)) return false; |
| 3016 | scratch = GetRtAsRegisterHelper(rt, scratch); |
| 3017 | offset = GetOffset(offset, L, bits); |
| 3018 | bgezc(scratch, offset); |
| 3019 | } else if (IsZero(rt)) { |
| 3020 | bits = OffsetSize::kOffset16; |
| 3021 | if (!is_near(L, bits)) return false; |
| 3022 | offset = GetOffset(offset, L, bits); |
| 3023 | blezc(rs, offset); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3024 | } else { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3025 | bits = OffsetSize::kOffset16; |
| 3026 | if (!is_near(L, bits)) return false; |
| 3027 | scratch = GetRtAsRegisterHelper(rt, scratch); |
| 3028 | DCHECK(!rs.is(scratch)); |
| 3029 | offset = GetOffset(offset, L, bits); |
| 3030 | bgec(scratch, rs, offset); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3031 | } |
| 3032 | break; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3033 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3034 | // Unsigned comparison. |
| 3035 | case Ugreater: |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3036 | // rs > rt |
| 3037 | if (rs.code() == rt.rm_.reg_code) { |
| 3038 | break; // No code needs to be emitted. |
| 3039 | } else if (rs.is(zero_reg)) { |
| 3040 | bits = OffsetSize::kOffset21; |
| 3041 | if (!is_near(L, bits)) return false; |
| 3042 | scratch = GetRtAsRegisterHelper(rt, scratch); |
| 3043 | offset = GetOffset(offset, L, bits); |
| 3044 | bnezc(scratch, offset); |
| 3045 | } else if (IsZero(rt)) { |
| 3046 | bits = OffsetSize::kOffset21; |
| 3047 | if (!is_near(L, bits)) return false; |
| 3048 | offset = GetOffset(offset, L, bits); |
| 3049 | bnezc(rs, offset); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3050 | } else { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3051 | bits = OffsetSize::kOffset16; |
| 3052 | if (!is_near(L, bits)) return false; |
| 3053 | scratch = GetRtAsRegisterHelper(rt, scratch); |
| 3054 | DCHECK(!rs.is(scratch)); |
| 3055 | offset = GetOffset(offset, L, bits); |
| 3056 | bltuc(scratch, rs, offset); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3057 | } |
| 3058 | break; |
| 3059 | case Ugreater_equal: |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3060 | // rs >= rt |
| 3061 | if (rs.code() == rt.rm_.reg_code) { |
| 3062 | bits = OffsetSize::kOffset26; |
| 3063 | if (!is_near(L, bits)) return false; |
| 3064 | offset = GetOffset(offset, L, bits); |
| 3065 | bc(offset); |
| 3066 | } else if (rs.is(zero_reg)) { |
| 3067 | bits = OffsetSize::kOffset21; |
| 3068 | if (!is_near(L, bits)) return false; |
| 3069 | scratch = GetRtAsRegisterHelper(rt, scratch); |
| 3070 | offset = GetOffset(offset, L, bits); |
| 3071 | beqzc(scratch, offset); |
| 3072 | } else if (IsZero(rt)) { |
| 3073 | bits = OffsetSize::kOffset26; |
| 3074 | if (!is_near(L, bits)) return false; |
| 3075 | offset = GetOffset(offset, L, bits); |
| 3076 | bc(offset); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3077 | } else { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3078 | bits = OffsetSize::kOffset16; |
| 3079 | if (!is_near(L, bits)) return false; |
| 3080 | scratch = GetRtAsRegisterHelper(rt, scratch); |
| 3081 | DCHECK(!rs.is(scratch)); |
| 3082 | offset = GetOffset(offset, L, bits); |
| 3083 | bgeuc(rs, scratch, offset); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3084 | } |
| 3085 | break; |
| 3086 | case Uless: |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3087 | // rs < rt |
| 3088 | if (rs.code() == rt.rm_.reg_code) { |
| 3089 | break; // No code needs to be emitted. |
| 3090 | } else if (rs.is(zero_reg)) { |
| 3091 | bits = OffsetSize::kOffset21; |
| 3092 | if (!is_near(L, bits)) return false; |
| 3093 | scratch = GetRtAsRegisterHelper(rt, scratch); |
| 3094 | offset = GetOffset(offset, L, bits); |
| 3095 | bnezc(scratch, offset); |
| 3096 | } else if (IsZero(rt)) { |
| 3097 | break; // No code needs to be emitted. |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3098 | } else { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3099 | bits = OffsetSize::kOffset16; |
| 3100 | if (!is_near(L, bits)) return false; |
| 3101 | scratch = GetRtAsRegisterHelper(rt, scratch); |
| 3102 | DCHECK(!rs.is(scratch)); |
| 3103 | offset = GetOffset(offset, L, bits); |
| 3104 | bltuc(rs, scratch, offset); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3105 | } |
| 3106 | break; |
| 3107 | case Uless_equal: |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3108 | // rs <= rt |
| 3109 | if (rs.code() == rt.rm_.reg_code) { |
| 3110 | bits = OffsetSize::kOffset26; |
| 3111 | if (!is_near(L, bits)) return false; |
| 3112 | offset = GetOffset(offset, L, bits); |
| 3113 | bc(offset); |
| 3114 | } else if (rs.is(zero_reg)) { |
| 3115 | bits = OffsetSize::kOffset26; |
| 3116 | if (!is_near(L, bits)) return false; |
| 3117 | scratch = GetRtAsRegisterHelper(rt, scratch); |
| 3118 | offset = GetOffset(offset, L, bits); |
| 3119 | bc(offset); |
| 3120 | } else if (IsZero(rt)) { |
| 3121 | bits = OffsetSize::kOffset21; |
| 3122 | if (!is_near(L, bits)) return false; |
| 3123 | offset = GetOffset(offset, L, bits); |
| 3124 | beqzc(rs, offset); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3125 | } else { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3126 | bits = OffsetSize::kOffset16; |
| 3127 | if (!is_near(L, bits)) return false; |
| 3128 | scratch = GetRtAsRegisterHelper(rt, scratch); |
| 3129 | DCHECK(!rs.is(scratch)); |
| 3130 | offset = GetOffset(offset, L, bits); |
| 3131 | bgeuc(scratch, rs, offset); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3132 | } |
| 3133 | break; |
| 3134 | default: |
| 3135 | UNREACHABLE(); |
| 3136 | } |
| 3137 | } |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3138 | CheckTrampolinePoolQuick(1); |
| 3139 | return true; |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3140 | } |
| 3141 | |
| 3142 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3143 | bool MacroAssembler::BranchShortHelper(int16_t offset, Label* L, Condition cond, |
| 3144 | Register rs, const Operand& rt, |
| 3145 | BranchDelaySlot bdslot) { |
| 3146 | DCHECK(L == nullptr || offset == 0); |
| 3147 | if (!is_near(L, OffsetSize::kOffset16)) return false; |
| 3148 | |
| 3149 | Register scratch = at; |
| 3150 | int32_t offset32; |
| 3151 | |
| 3152 | // Be careful to always use shifted_branch_offset only just before the |
| 3153 | // branch instruction, as the location will be remember for patching the |
| 3154 | // target. |
| 3155 | { |
| 3156 | BlockTrampolinePoolScope block_trampoline_pool(this); |
| 3157 | switch (cond) { |
| 3158 | case cc_always: |
| 3159 | offset32 = GetOffset(offset, L, OffsetSize::kOffset16); |
| 3160 | b(offset32); |
| 3161 | break; |
| 3162 | case eq: |
| 3163 | if (IsZero(rt)) { |
| 3164 | offset32 = GetOffset(offset, L, OffsetSize::kOffset16); |
| 3165 | beq(rs, zero_reg, offset32); |
| 3166 | } else { |
| 3167 | // We don't want any other register but scratch clobbered. |
| 3168 | scratch = GetRtAsRegisterHelper(rt, scratch); |
| 3169 | offset32 = GetOffset(offset, L, OffsetSize::kOffset16); |
| 3170 | beq(rs, scratch, offset32); |
| 3171 | } |
| 3172 | break; |
| 3173 | case ne: |
| 3174 | if (IsZero(rt)) { |
| 3175 | offset32 = GetOffset(offset, L, OffsetSize::kOffset16); |
| 3176 | bne(rs, zero_reg, offset32); |
| 3177 | } else { |
| 3178 | // We don't want any other register but scratch clobbered. |
| 3179 | scratch = GetRtAsRegisterHelper(rt, scratch); |
| 3180 | offset32 = GetOffset(offset, L, OffsetSize::kOffset16); |
| 3181 | bne(rs, scratch, offset32); |
| 3182 | } |
| 3183 | break; |
| 3184 | |
| 3185 | // Signed comparison. |
| 3186 | case greater: |
| 3187 | if (IsZero(rt)) { |
| 3188 | offset32 = GetOffset(offset, L, OffsetSize::kOffset16); |
| 3189 | bgtz(rs, offset32); |
| 3190 | } else { |
| 3191 | Slt(scratch, GetRtAsRegisterHelper(rt, scratch), rs); |
| 3192 | offset32 = GetOffset(offset, L, OffsetSize::kOffset16); |
| 3193 | bne(scratch, zero_reg, offset32); |
| 3194 | } |
| 3195 | break; |
| 3196 | case greater_equal: |
| 3197 | if (IsZero(rt)) { |
| 3198 | offset32 = GetOffset(offset, L, OffsetSize::kOffset16); |
| 3199 | bgez(rs, offset32); |
| 3200 | } else { |
| 3201 | Slt(scratch, rs, rt); |
| 3202 | offset32 = GetOffset(offset, L, OffsetSize::kOffset16); |
| 3203 | beq(scratch, zero_reg, offset32); |
| 3204 | } |
| 3205 | break; |
| 3206 | case less: |
| 3207 | if (IsZero(rt)) { |
| 3208 | offset32 = GetOffset(offset, L, OffsetSize::kOffset16); |
| 3209 | bltz(rs, offset32); |
| 3210 | } else { |
| 3211 | Slt(scratch, rs, rt); |
| 3212 | offset32 = GetOffset(offset, L, OffsetSize::kOffset16); |
| 3213 | bne(scratch, zero_reg, offset32); |
| 3214 | } |
| 3215 | break; |
| 3216 | case less_equal: |
| 3217 | if (IsZero(rt)) { |
| 3218 | offset32 = GetOffset(offset, L, OffsetSize::kOffset16); |
| 3219 | blez(rs, offset32); |
| 3220 | } else { |
| 3221 | Slt(scratch, GetRtAsRegisterHelper(rt, scratch), rs); |
| 3222 | offset32 = GetOffset(offset, L, OffsetSize::kOffset16); |
| 3223 | beq(scratch, zero_reg, offset32); |
| 3224 | } |
| 3225 | break; |
| 3226 | |
| 3227 | // Unsigned comparison. |
| 3228 | case Ugreater: |
| 3229 | if (IsZero(rt)) { |
| 3230 | offset32 = GetOffset(offset, L, OffsetSize::kOffset16); |
| 3231 | bne(rs, zero_reg, offset32); |
| 3232 | } else { |
| 3233 | Sltu(scratch, GetRtAsRegisterHelper(rt, scratch), rs); |
| 3234 | offset32 = GetOffset(offset, L, OffsetSize::kOffset16); |
| 3235 | bne(scratch, zero_reg, offset32); |
| 3236 | } |
| 3237 | break; |
| 3238 | case Ugreater_equal: |
| 3239 | if (IsZero(rt)) { |
| 3240 | offset32 = GetOffset(offset, L, OffsetSize::kOffset16); |
| 3241 | b(offset32); |
| 3242 | } else { |
| 3243 | Sltu(scratch, rs, rt); |
| 3244 | offset32 = GetOffset(offset, L, OffsetSize::kOffset16); |
| 3245 | beq(scratch, zero_reg, offset32); |
| 3246 | } |
| 3247 | break; |
| 3248 | case Uless: |
| 3249 | if (IsZero(rt)) { |
| 3250 | return true; // No code needs to be emitted. |
| 3251 | } else { |
| 3252 | Sltu(scratch, rs, rt); |
| 3253 | offset32 = GetOffset(offset, L, OffsetSize::kOffset16); |
| 3254 | bne(scratch, zero_reg, offset32); |
| 3255 | } |
| 3256 | break; |
| 3257 | case Uless_equal: |
| 3258 | if (IsZero(rt)) { |
| 3259 | offset32 = GetOffset(offset, L, OffsetSize::kOffset16); |
| 3260 | beq(rs, zero_reg, offset32); |
| 3261 | } else { |
| 3262 | Sltu(scratch, GetRtAsRegisterHelper(rt, scratch), rs); |
| 3263 | offset32 = GetOffset(offset, L, OffsetSize::kOffset16); |
| 3264 | beq(scratch, zero_reg, offset32); |
| 3265 | } |
| 3266 | break; |
| 3267 | default: |
| 3268 | UNREACHABLE(); |
| 3269 | } |
| 3270 | } |
| 3271 | // Emit a nop in the branch delay slot if required. |
| 3272 | if (bdslot == PROTECT) |
| 3273 | nop(); |
| 3274 | |
| 3275 | return true; |
| 3276 | } |
| 3277 | |
| 3278 | |
| 3279 | bool MacroAssembler::BranchShortCheck(int32_t offset, Label* L, Condition cond, |
| 3280 | Register rs, const Operand& rt, |
| 3281 | BranchDelaySlot bdslot) { |
| 3282 | BRANCH_ARGS_CHECK(cond, rs, rt); |
| 3283 | |
| 3284 | if (!L) { |
| 3285 | if (IsMipsArchVariant(kMips32r6) && bdslot == PROTECT) { |
| 3286 | DCHECK(is_int26(offset)); |
| 3287 | return BranchShortHelperR6(offset, nullptr, cond, rs, rt); |
| 3288 | } else { |
| 3289 | DCHECK(is_int16(offset)); |
| 3290 | return BranchShortHelper(offset, nullptr, cond, rs, rt, bdslot); |
| 3291 | } |
| 3292 | } else { |
| 3293 | DCHECK(offset == 0); |
| 3294 | if (IsMipsArchVariant(kMips32r6) && bdslot == PROTECT) { |
| 3295 | return BranchShortHelperR6(0, L, cond, rs, rt); |
| 3296 | } else { |
| 3297 | return BranchShortHelper(0, L, cond, rs, rt, bdslot); |
| 3298 | } |
| 3299 | } |
| 3300 | return false; |
| 3301 | } |
| 3302 | |
| 3303 | |
| 3304 | void MacroAssembler::BranchShort(int32_t offset, Condition cond, Register rs, |
| 3305 | const Operand& rt, BranchDelaySlot bdslot) { |
| 3306 | BranchShortCheck(offset, nullptr, cond, rs, rt, bdslot); |
| 3307 | } |
| 3308 | |
| 3309 | |
| 3310 | void MacroAssembler::BranchShort(Label* L, Condition cond, Register rs, |
| 3311 | const Operand& rt, BranchDelaySlot bdslot) { |
| 3312 | BranchShortCheck(0, L, cond, rs, rt, bdslot); |
| 3313 | } |
| 3314 | |
| 3315 | |
| 3316 | void MacroAssembler::BranchAndLink(int32_t offset, BranchDelaySlot bdslot) { |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 3317 | BranchAndLinkShort(offset, bdslot); |
| 3318 | } |
| 3319 | |
| 3320 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3321 | void MacroAssembler::BranchAndLink(int32_t offset, Condition cond, Register rs, |
| 3322 | const Operand& rt, BranchDelaySlot bdslot) { |
| 3323 | bool is_near = BranchAndLinkShortCheck(offset, nullptr, cond, rs, rt, bdslot); |
| 3324 | DCHECK(is_near); |
| 3325 | USE(is_near); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 3326 | } |
| 3327 | |
| 3328 | |
| 3329 | void MacroAssembler::BranchAndLink(Label* L, BranchDelaySlot bdslot) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3330 | if (L->is_bound()) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3331 | if (is_near_branch(L)) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3332 | BranchAndLinkShort(L, bdslot); |
| 3333 | } else { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3334 | BranchAndLinkLong(L, bdslot); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3335 | } |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 3336 | } else { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3337 | if (is_trampoline_emitted()) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3338 | BranchAndLinkLong(L, bdslot); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3339 | } else { |
| 3340 | BranchAndLinkShort(L, bdslot); |
| 3341 | } |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 3342 | } |
| 3343 | } |
| 3344 | |
| 3345 | |
| 3346 | void MacroAssembler::BranchAndLink(Label* L, Condition cond, Register rs, |
| 3347 | const Operand& rt, |
| 3348 | BranchDelaySlot bdslot) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3349 | if (L->is_bound()) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3350 | if (!BranchAndLinkShortCheck(0, L, cond, rs, rt, bdslot)) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3351 | Label skip; |
| 3352 | Condition neg_cond = NegateCondition(cond); |
| 3353 | BranchShort(&skip, neg_cond, rs, rt); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3354 | BranchAndLinkLong(L, bdslot); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3355 | bind(&skip); |
| 3356 | } |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 3357 | } else { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3358 | if (is_trampoline_emitted()) { |
| 3359 | Label skip; |
| 3360 | Condition neg_cond = NegateCondition(cond); |
| 3361 | BranchShort(&skip, neg_cond, rs, rt); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3362 | BranchAndLinkLong(L, bdslot); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3363 | bind(&skip); |
| 3364 | } else { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3365 | BranchAndLinkShortCheck(0, L, cond, rs, rt, bdslot); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3366 | } |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 3367 | } |
| 3368 | } |
| 3369 | |
| 3370 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3371 | void MacroAssembler::BranchAndLinkShortHelper(int16_t offset, Label* L, |
| 3372 | BranchDelaySlot bdslot) { |
| 3373 | DCHECK(L == nullptr || offset == 0); |
| 3374 | offset = GetOffset(offset, L, OffsetSize::kOffset16); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3375 | bal(offset); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 3376 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3377 | // Emit a nop in the branch delay slot if required. |
| 3378 | if (bdslot == PROTECT) |
| 3379 | nop(); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 3380 | } |
| 3381 | |
| 3382 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3383 | void MacroAssembler::BranchAndLinkShortHelperR6(int32_t offset, Label* L) { |
| 3384 | DCHECK(L == nullptr || offset == 0); |
| 3385 | offset = GetOffset(offset, L, OffsetSize::kOffset26); |
| 3386 | balc(offset); |
| 3387 | } |
| 3388 | |
| 3389 | |
| 3390 | void MacroAssembler::BranchAndLinkShort(int32_t offset, |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 3391 | BranchDelaySlot bdslot) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3392 | if (IsMipsArchVariant(kMips32r6) && bdslot == PROTECT) { |
| 3393 | DCHECK(is_int26(offset)); |
| 3394 | BranchAndLinkShortHelperR6(offset, nullptr); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3395 | } else { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3396 | DCHECK(is_int16(offset)); |
| 3397 | BranchAndLinkShortHelper(offset, nullptr, bdslot); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 3398 | } |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3399 | } |
| 3400 | |
| 3401 | |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 3402 | void MacroAssembler::BranchAndLinkShort(Label* L, BranchDelaySlot bdslot) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3403 | if (IsMipsArchVariant(kMips32r6) && bdslot == PROTECT) { |
| 3404 | BranchAndLinkShortHelperR6(0, L); |
| 3405 | } else { |
| 3406 | BranchAndLinkShortHelper(0, L, bdslot); |
| 3407 | } |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3408 | } |
| 3409 | |
| 3410 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3411 | bool MacroAssembler::BranchAndLinkShortHelperR6(int32_t offset, Label* L, |
| 3412 | Condition cond, Register rs, |
| 3413 | const Operand& rt) { |
| 3414 | DCHECK(L == nullptr || offset == 0); |
| 3415 | Register scratch = rs.is(at) ? t8 : at; |
| 3416 | OffsetSize bits = OffsetSize::kOffset16; |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3417 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3418 | BlockTrampolinePoolScope block_trampoline_pool(this); |
| 3419 | DCHECK((cond == cc_always && is_int26(offset)) || is_int16(offset)); |
| 3420 | switch (cond) { |
| 3421 | case cc_always: |
| 3422 | bits = OffsetSize::kOffset26; |
| 3423 | if (!is_near(L, bits)) return false; |
| 3424 | offset = GetOffset(offset, L, bits); |
| 3425 | balc(offset); |
| 3426 | break; |
| 3427 | case eq: |
| 3428 | if (!is_near(L, bits)) return false; |
| 3429 | Subu(scratch, rs, rt); |
| 3430 | offset = GetOffset(offset, L, bits); |
| 3431 | beqzalc(scratch, offset); |
| 3432 | break; |
| 3433 | case ne: |
| 3434 | if (!is_near(L, bits)) return false; |
| 3435 | Subu(scratch, rs, rt); |
| 3436 | offset = GetOffset(offset, L, bits); |
| 3437 | bnezalc(scratch, offset); |
| 3438 | break; |
| 3439 | |
| 3440 | // Signed comparison. |
| 3441 | case greater: |
| 3442 | // rs > rt |
| 3443 | if (rs.code() == rt.rm_.reg_code) { |
| 3444 | break; // No code needs to be emitted. |
| 3445 | } else if (rs.is(zero_reg)) { |
| 3446 | if (!is_near(L, bits)) return false; |
| 3447 | scratch = GetRtAsRegisterHelper(rt, scratch); |
| 3448 | offset = GetOffset(offset, L, bits); |
| 3449 | bltzalc(scratch, offset); |
| 3450 | } else if (IsZero(rt)) { |
| 3451 | if (!is_near(L, bits)) return false; |
| 3452 | offset = GetOffset(offset, L, bits); |
| 3453 | bgtzalc(rs, offset); |
| 3454 | } else { |
| 3455 | if (!is_near(L, bits)) return false; |
| 3456 | Slt(scratch, GetRtAsRegisterHelper(rt, scratch), rs); |
| 3457 | offset = GetOffset(offset, L, bits); |
| 3458 | bnezalc(scratch, offset); |
| 3459 | } |
| 3460 | break; |
| 3461 | case greater_equal: |
| 3462 | // rs >= rt |
| 3463 | if (rs.code() == rt.rm_.reg_code) { |
| 3464 | bits = OffsetSize::kOffset26; |
| 3465 | if (!is_near(L, bits)) return false; |
| 3466 | offset = GetOffset(offset, L, bits); |
| 3467 | balc(offset); |
| 3468 | } else if (rs.is(zero_reg)) { |
| 3469 | if (!is_near(L, bits)) return false; |
| 3470 | scratch = GetRtAsRegisterHelper(rt, scratch); |
| 3471 | offset = GetOffset(offset, L, bits); |
| 3472 | blezalc(scratch, offset); |
| 3473 | } else if (IsZero(rt)) { |
| 3474 | if (!is_near(L, bits)) return false; |
| 3475 | offset = GetOffset(offset, L, bits); |
| 3476 | bgezalc(rs, offset); |
| 3477 | } else { |
| 3478 | if (!is_near(L, bits)) return false; |
| 3479 | Slt(scratch, rs, rt); |
| 3480 | offset = GetOffset(offset, L, bits); |
| 3481 | beqzalc(scratch, offset); |
| 3482 | } |
| 3483 | break; |
| 3484 | case less: |
| 3485 | // rs < rt |
| 3486 | if (rs.code() == rt.rm_.reg_code) { |
| 3487 | break; // No code needs to be emitted. |
| 3488 | } else if (rs.is(zero_reg)) { |
| 3489 | if (!is_near(L, bits)) return false; |
| 3490 | scratch = GetRtAsRegisterHelper(rt, scratch); |
| 3491 | offset = GetOffset(offset, L, bits); |
| 3492 | bgtzalc(scratch, offset); |
| 3493 | } else if (IsZero(rt)) { |
| 3494 | if (!is_near(L, bits)) return false; |
| 3495 | offset = GetOffset(offset, L, bits); |
| 3496 | bltzalc(rs, offset); |
| 3497 | } else { |
| 3498 | if (!is_near(L, bits)) return false; |
| 3499 | Slt(scratch, rs, rt); |
| 3500 | offset = GetOffset(offset, L, bits); |
| 3501 | bnezalc(scratch, offset); |
| 3502 | } |
| 3503 | break; |
| 3504 | case less_equal: |
| 3505 | // rs <= r2 |
| 3506 | if (rs.code() == rt.rm_.reg_code) { |
| 3507 | bits = OffsetSize::kOffset26; |
| 3508 | if (!is_near(L, bits)) return false; |
| 3509 | offset = GetOffset(offset, L, bits); |
| 3510 | balc(offset); |
| 3511 | } else if (rs.is(zero_reg)) { |
| 3512 | if (!is_near(L, bits)) return false; |
| 3513 | scratch = GetRtAsRegisterHelper(rt, scratch); |
| 3514 | offset = GetOffset(offset, L, bits); |
| 3515 | bgezalc(scratch, offset); |
| 3516 | } else if (IsZero(rt)) { |
| 3517 | if (!is_near(L, bits)) return false; |
| 3518 | offset = GetOffset(offset, L, bits); |
| 3519 | blezalc(rs, offset); |
| 3520 | } else { |
| 3521 | if (!is_near(L, bits)) return false; |
| 3522 | Slt(scratch, GetRtAsRegisterHelper(rt, scratch), rs); |
| 3523 | offset = GetOffset(offset, L, bits); |
| 3524 | beqzalc(scratch, offset); |
| 3525 | } |
| 3526 | break; |
| 3527 | |
| 3528 | |
| 3529 | // Unsigned comparison. |
| 3530 | case Ugreater: |
| 3531 | // rs > r2 |
| 3532 | if (!is_near(L, bits)) return false; |
| 3533 | Sltu(scratch, GetRtAsRegisterHelper(rt, scratch), rs); |
| 3534 | offset = GetOffset(offset, L, bits); |
| 3535 | bnezalc(scratch, offset); |
| 3536 | break; |
| 3537 | case Ugreater_equal: |
| 3538 | // rs >= r2 |
| 3539 | if (!is_near(L, bits)) return false; |
| 3540 | Sltu(scratch, rs, rt); |
| 3541 | offset = GetOffset(offset, L, bits); |
| 3542 | beqzalc(scratch, offset); |
| 3543 | break; |
| 3544 | case Uless: |
| 3545 | // rs < r2 |
| 3546 | if (!is_near(L, bits)) return false; |
| 3547 | Sltu(scratch, rs, rt); |
| 3548 | offset = GetOffset(offset, L, bits); |
| 3549 | bnezalc(scratch, offset); |
| 3550 | break; |
| 3551 | case Uless_equal: |
| 3552 | // rs <= r2 |
| 3553 | if (!is_near(L, bits)) return false; |
| 3554 | Sltu(scratch, GetRtAsRegisterHelper(rt, scratch), rs); |
| 3555 | offset = GetOffset(offset, L, bits); |
| 3556 | beqzalc(scratch, offset); |
| 3557 | break; |
| 3558 | default: |
| 3559 | UNREACHABLE(); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3560 | } |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3561 | return true; |
| 3562 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3563 | |
| 3564 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3565 | // Pre r6 we need to use a bgezal or bltzal, but they can't be used directly |
| 3566 | // with the slt instructions. We could use sub or add instead but we would miss |
| 3567 | // overflow cases, so we keep slt and add an intermediate third instruction. |
| 3568 | bool MacroAssembler::BranchAndLinkShortHelper(int16_t offset, Label* L, |
| 3569 | Condition cond, Register rs, |
| 3570 | const Operand& rt, |
| 3571 | BranchDelaySlot bdslot) { |
| 3572 | DCHECK(L == nullptr || offset == 0); |
| 3573 | if (!is_near(L, OffsetSize::kOffset16)) return false; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3574 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3575 | Register scratch = t8; |
| 3576 | BlockTrampolinePoolScope block_trampoline_pool(this); |
| 3577 | |
| 3578 | switch (cond) { |
| 3579 | case cc_always: |
| 3580 | offset = GetOffset(offset, L, OffsetSize::kOffset16); |
| 3581 | bal(offset); |
| 3582 | break; |
| 3583 | case eq: |
| 3584 | bne(rs, GetRtAsRegisterHelper(rt, scratch), 2); |
| 3585 | nop(); |
| 3586 | offset = GetOffset(offset, L, OffsetSize::kOffset16); |
| 3587 | bal(offset); |
| 3588 | break; |
| 3589 | case ne: |
| 3590 | beq(rs, GetRtAsRegisterHelper(rt, scratch), 2); |
| 3591 | nop(); |
| 3592 | offset = GetOffset(offset, L, OffsetSize::kOffset16); |
| 3593 | bal(offset); |
| 3594 | break; |
| 3595 | |
| 3596 | // Signed comparison. |
| 3597 | case greater: |
| 3598 | Slt(scratch, GetRtAsRegisterHelper(rt, scratch), rs); |
| 3599 | addiu(scratch, scratch, -1); |
| 3600 | offset = GetOffset(offset, L, OffsetSize::kOffset16); |
| 3601 | bgezal(scratch, offset); |
| 3602 | break; |
| 3603 | case greater_equal: |
| 3604 | Slt(scratch, rs, rt); |
| 3605 | addiu(scratch, scratch, -1); |
| 3606 | offset = GetOffset(offset, L, OffsetSize::kOffset16); |
| 3607 | bltzal(scratch, offset); |
| 3608 | break; |
| 3609 | case less: |
| 3610 | Slt(scratch, rs, rt); |
| 3611 | addiu(scratch, scratch, -1); |
| 3612 | offset = GetOffset(offset, L, OffsetSize::kOffset16); |
| 3613 | bgezal(scratch, offset); |
| 3614 | break; |
| 3615 | case less_equal: |
| 3616 | Slt(scratch, GetRtAsRegisterHelper(rt, scratch), rs); |
| 3617 | addiu(scratch, scratch, -1); |
| 3618 | offset = GetOffset(offset, L, OffsetSize::kOffset16); |
| 3619 | bltzal(scratch, offset); |
| 3620 | break; |
| 3621 | |
| 3622 | // Unsigned comparison. |
| 3623 | case Ugreater: |
| 3624 | Sltu(scratch, GetRtAsRegisterHelper(rt, scratch), rs); |
| 3625 | addiu(scratch, scratch, -1); |
| 3626 | offset = GetOffset(offset, L, OffsetSize::kOffset16); |
| 3627 | bgezal(scratch, offset); |
| 3628 | break; |
| 3629 | case Ugreater_equal: |
| 3630 | Sltu(scratch, rs, rt); |
| 3631 | addiu(scratch, scratch, -1); |
| 3632 | offset = GetOffset(offset, L, OffsetSize::kOffset16); |
| 3633 | bltzal(scratch, offset); |
| 3634 | break; |
| 3635 | case Uless: |
| 3636 | Sltu(scratch, rs, rt); |
| 3637 | addiu(scratch, scratch, -1); |
| 3638 | offset = GetOffset(offset, L, OffsetSize::kOffset16); |
| 3639 | bgezal(scratch, offset); |
| 3640 | break; |
| 3641 | case Uless_equal: |
| 3642 | Sltu(scratch, GetRtAsRegisterHelper(rt, scratch), rs); |
| 3643 | addiu(scratch, scratch, -1); |
| 3644 | offset = GetOffset(offset, L, OffsetSize::kOffset16); |
| 3645 | bltzal(scratch, offset); |
| 3646 | break; |
| 3647 | |
| 3648 | default: |
| 3649 | UNREACHABLE(); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3650 | } |
| 3651 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3652 | // Emit a nop in the branch delay slot if required. |
| 3653 | if (bdslot == PROTECT) |
| 3654 | nop(); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3655 | |
| 3656 | return true; |
| 3657 | } |
| 3658 | |
| 3659 | |
| 3660 | bool MacroAssembler::BranchAndLinkShortCheck(int32_t offset, Label* L, |
| 3661 | Condition cond, Register rs, |
| 3662 | const Operand& rt, |
| 3663 | BranchDelaySlot bdslot) { |
| 3664 | BRANCH_ARGS_CHECK(cond, rs, rt); |
| 3665 | |
| 3666 | if (!L) { |
| 3667 | if (IsMipsArchVariant(kMips32r6) && bdslot == PROTECT) { |
| 3668 | DCHECK(is_int26(offset)); |
| 3669 | return BranchAndLinkShortHelperR6(offset, nullptr, cond, rs, rt); |
| 3670 | } else { |
| 3671 | DCHECK(is_int16(offset)); |
| 3672 | return BranchAndLinkShortHelper(offset, nullptr, cond, rs, rt, bdslot); |
| 3673 | } |
| 3674 | } else { |
| 3675 | DCHECK(offset == 0); |
| 3676 | if (IsMipsArchVariant(kMips32r6) && bdslot == PROTECT) { |
| 3677 | return BranchAndLinkShortHelperR6(0, L, cond, rs, rt); |
| 3678 | } else { |
| 3679 | return BranchAndLinkShortHelper(0, L, cond, rs, rt, bdslot); |
| 3680 | } |
| 3681 | } |
| 3682 | return false; |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3683 | } |
| 3684 | |
| 3685 | |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 3686 | void MacroAssembler::Jump(Register target, |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3687 | Condition cond, |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 3688 | Register rs, |
| 3689 | const Operand& rt, |
| 3690 | BranchDelaySlot bd) { |
| 3691 | BlockTrampolinePoolScope block_trampoline_pool(this); |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 3692 | if (IsMipsArchVariant(kMips32r6) && bd == PROTECT) { |
| 3693 | if (cond == cc_always) { |
| 3694 | jic(target, 0); |
| 3695 | } else { |
| 3696 | BRANCH_ARGS_CHECK(cond, rs, rt); |
| 3697 | Branch(2, NegateCondition(cond), rs, rt); |
| 3698 | jic(target, 0); |
| 3699 | } |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 3700 | } else { |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 3701 | if (cond == cc_always) { |
| 3702 | jr(target); |
| 3703 | } else { |
| 3704 | BRANCH_ARGS_CHECK(cond, rs, rt); |
| 3705 | Branch(2, NegateCondition(cond), rs, rt); |
| 3706 | jr(target); |
| 3707 | } |
| 3708 | // Emit a nop in the branch delay slot if required. |
| 3709 | if (bd == PROTECT) nop(); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 3710 | } |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 3711 | } |
| 3712 | |
| 3713 | |
| 3714 | void MacroAssembler::Jump(intptr_t target, |
| 3715 | RelocInfo::Mode rmode, |
| 3716 | Condition cond, |
| 3717 | Register rs, |
| 3718 | const Operand& rt, |
| 3719 | BranchDelaySlot bd) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3720 | Label skip; |
| 3721 | if (cond != cc_always) { |
| 3722 | Branch(USE_DELAY_SLOT, &skip, NegateCondition(cond), rs, rt); |
| 3723 | } |
| 3724 | // The first instruction of 'li' may be placed in the delay slot. |
| 3725 | // This is not an issue, t9 is expected to be clobbered anyway. |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 3726 | li(t9, Operand(target, rmode)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3727 | Jump(t9, al, zero_reg, Operand(zero_reg), bd); |
| 3728 | bind(&skip); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 3729 | } |
| 3730 | |
| 3731 | |
| 3732 | void MacroAssembler::Jump(Address target, |
| 3733 | RelocInfo::Mode rmode, |
| 3734 | Condition cond, |
| 3735 | Register rs, |
| 3736 | const Operand& rt, |
| 3737 | BranchDelaySlot bd) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3738 | DCHECK(!RelocInfo::IsCodeTarget(rmode)); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 3739 | Jump(reinterpret_cast<intptr_t>(target), rmode, cond, rs, rt, bd); |
| 3740 | } |
| 3741 | |
| 3742 | |
| 3743 | void MacroAssembler::Jump(Handle<Code> code, |
| 3744 | RelocInfo::Mode rmode, |
| 3745 | Condition cond, |
| 3746 | Register rs, |
| 3747 | const Operand& rt, |
| 3748 | BranchDelaySlot bd) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3749 | DCHECK(RelocInfo::IsCodeTarget(rmode)); |
| 3750 | AllowDeferredHandleDereference embedding_raw_address; |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 3751 | Jump(reinterpret_cast<intptr_t>(code.location()), rmode, cond, rs, rt, bd); |
| 3752 | } |
| 3753 | |
| 3754 | |
| 3755 | int MacroAssembler::CallSize(Register target, |
| 3756 | Condition cond, |
| 3757 | Register rs, |
| 3758 | const Operand& rt, |
| 3759 | BranchDelaySlot bd) { |
| 3760 | int size = 0; |
| 3761 | |
| 3762 | if (cond == cc_always) { |
| 3763 | size += 1; |
| 3764 | } else { |
| 3765 | size += 3; |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3766 | } |
| 3767 | |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 3768 | if (bd == PROTECT && !IsMipsArchVariant(kMips32r6)) size += 1; |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3769 | |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 3770 | return size * kInstrSize; |
| 3771 | } |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3772 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3773 | |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 3774 | // Note: To call gcc-compiled C code on mips, you must call thru t9. |
| 3775 | void MacroAssembler::Call(Register target, |
| 3776 | Condition cond, |
| 3777 | Register rs, |
| 3778 | const Operand& rt, |
| 3779 | BranchDelaySlot bd) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3780 | #ifdef DEBUG |
| 3781 | int size = IsPrevInstrCompactBranch() ? kInstrSize : 0; |
| 3782 | #endif |
| 3783 | |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 3784 | BlockTrampolinePoolScope block_trampoline_pool(this); |
| 3785 | Label start; |
| 3786 | bind(&start); |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 3787 | if (IsMipsArchVariant(kMips32r6) && bd == PROTECT) { |
| 3788 | if (cond == cc_always) { |
| 3789 | jialc(target, 0); |
| 3790 | } else { |
| 3791 | BRANCH_ARGS_CHECK(cond, rs, rt); |
| 3792 | Branch(2, NegateCondition(cond), rs, rt); |
| 3793 | jialc(target, 0); |
| 3794 | } |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 3795 | } else { |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 3796 | if (cond == cc_always) { |
| 3797 | jalr(target); |
| 3798 | } else { |
| 3799 | BRANCH_ARGS_CHECK(cond, rs, rt); |
| 3800 | Branch(2, NegateCondition(cond), rs, rt); |
| 3801 | jalr(target); |
| 3802 | } |
| 3803 | // Emit a nop in the branch delay slot if required. |
| 3804 | if (bd == PROTECT) nop(); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3805 | } |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 3806 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3807 | #ifdef DEBUG |
| 3808 | CHECK_EQ(size + CallSize(target, cond, rs, rt, bd), |
| 3809 | SizeOfCodeGeneratedSince(&start)); |
| 3810 | #endif |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 3811 | } |
| 3812 | |
| 3813 | |
| 3814 | int MacroAssembler::CallSize(Address target, |
| 3815 | RelocInfo::Mode rmode, |
| 3816 | Condition cond, |
| 3817 | Register rs, |
| 3818 | const Operand& rt, |
| 3819 | BranchDelaySlot bd) { |
| 3820 | int size = CallSize(t9, cond, rs, rt, bd); |
| 3821 | return size + 2 * kInstrSize; |
| 3822 | } |
| 3823 | |
| 3824 | |
| 3825 | void MacroAssembler::Call(Address target, |
| 3826 | RelocInfo::Mode rmode, |
| 3827 | Condition cond, |
| 3828 | Register rs, |
| 3829 | const Operand& rt, |
| 3830 | BranchDelaySlot bd) { |
| 3831 | BlockTrampolinePoolScope block_trampoline_pool(this); |
| 3832 | Label start; |
| 3833 | bind(&start); |
| 3834 | int32_t target_int = reinterpret_cast<int32_t>(target); |
| 3835 | // Must record previous source positions before the |
| 3836 | // li() generates a new code target. |
| 3837 | positions_recorder()->WriteRecordedPositions(); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3838 | li(t9, Operand(target_int, rmode), CONSTANT_SIZE); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 3839 | Call(t9, cond, rs, rt, bd); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3840 | DCHECK_EQ(CallSize(target, rmode, cond, rs, rt, bd), |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 3841 | SizeOfCodeGeneratedSince(&start)); |
| 3842 | } |
| 3843 | |
| 3844 | |
| 3845 | int MacroAssembler::CallSize(Handle<Code> code, |
| 3846 | RelocInfo::Mode rmode, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3847 | TypeFeedbackId ast_id, |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 3848 | Condition cond, |
| 3849 | Register rs, |
| 3850 | const Operand& rt, |
| 3851 | BranchDelaySlot bd) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3852 | AllowDeferredHandleDereference using_raw_address; |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 3853 | return CallSize(reinterpret_cast<Address>(code.location()), |
| 3854 | rmode, cond, rs, rt, bd); |
| 3855 | } |
| 3856 | |
| 3857 | |
| 3858 | void MacroAssembler::Call(Handle<Code> code, |
| 3859 | RelocInfo::Mode rmode, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3860 | TypeFeedbackId ast_id, |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 3861 | Condition cond, |
| 3862 | Register rs, |
| 3863 | const Operand& rt, |
| 3864 | BranchDelaySlot bd) { |
| 3865 | BlockTrampolinePoolScope block_trampoline_pool(this); |
| 3866 | Label start; |
| 3867 | bind(&start); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3868 | DCHECK(RelocInfo::IsCodeTarget(rmode)); |
| 3869 | if (rmode == RelocInfo::CODE_TARGET && !ast_id.IsNone()) { |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 3870 | SetRecordedAstId(ast_id); |
| 3871 | rmode = RelocInfo::CODE_TARGET_WITH_ID; |
| 3872 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3873 | AllowDeferredHandleDereference embedding_raw_address; |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 3874 | Call(reinterpret_cast<Address>(code.location()), rmode, cond, rs, rt, bd); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3875 | DCHECK_EQ(CallSize(code, rmode, ast_id, cond, rs, rt, bd), |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 3876 | SizeOfCodeGeneratedSince(&start)); |
| 3877 | } |
| 3878 | |
| 3879 | |
| 3880 | void MacroAssembler::Ret(Condition cond, |
| 3881 | Register rs, |
| 3882 | const Operand& rt, |
| 3883 | BranchDelaySlot bd) { |
| 3884 | Jump(ra, cond, rs, rt, bd); |
| 3885 | } |
| 3886 | |
| 3887 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3888 | void MacroAssembler::BranchLong(Label* L, BranchDelaySlot bdslot) { |
| 3889 | if (IsMipsArchVariant(kMips32r6) && bdslot == PROTECT && |
| 3890 | (!L->is_bound() || is_near_r6(L))) { |
| 3891 | BranchShortHelperR6(0, L); |
| 3892 | } else { |
| 3893 | BlockTrampolinePoolScope block_trampoline_pool(this); |
| 3894 | uint32_t imm32; |
| 3895 | imm32 = jump_address(L); |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 3896 | if (IsMipsArchVariant(kMips32r6) && bdslot == PROTECT) { |
| 3897 | uint32_t lui_offset, jic_offset; |
| 3898 | UnpackTargetAddressUnsigned(imm32, lui_offset, jic_offset); |
| 3899 | { |
| 3900 | BlockGrowBufferScope block_buf_growth(this); |
| 3901 | // Buffer growth (and relocation) must be blocked for internal |
| 3902 | // references until associated instructions are emitted and |
| 3903 | // available to be patched. |
| 3904 | RecordRelocInfo(RelocInfo::INTERNAL_REFERENCE_ENCODED); |
| 3905 | lui(at, lui_offset); |
| 3906 | jic(at, jic_offset); |
| 3907 | } |
| 3908 | CheckBuffer(); |
| 3909 | } else { |
| 3910 | { |
| 3911 | BlockGrowBufferScope block_buf_growth(this); |
| 3912 | // Buffer growth (and relocation) must be blocked for internal |
| 3913 | // references |
| 3914 | // until associated instructions are emitted and available to be |
| 3915 | // patched. |
| 3916 | RecordRelocInfo(RelocInfo::INTERNAL_REFERENCE_ENCODED); |
| 3917 | lui(at, (imm32 & kHiMask) >> kLuiShift); |
| 3918 | ori(at, at, (imm32 & kImm16Mask)); |
| 3919 | } |
| 3920 | CheckBuffer(); |
| 3921 | jr(at); |
| 3922 | // Emit a nop in the branch delay slot if required. |
| 3923 | if (bdslot == PROTECT) nop(); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3924 | } |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 3925 | } |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 3926 | } |
| 3927 | |
| 3928 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3929 | void MacroAssembler::BranchAndLinkLong(Label* L, BranchDelaySlot bdslot) { |
| 3930 | if (IsMipsArchVariant(kMips32r6) && bdslot == PROTECT && |
| 3931 | (!L->is_bound() || is_near_r6(L))) { |
| 3932 | BranchAndLinkShortHelperR6(0, L); |
| 3933 | } else { |
| 3934 | BlockTrampolinePoolScope block_trampoline_pool(this); |
| 3935 | uint32_t imm32; |
| 3936 | imm32 = jump_address(L); |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 3937 | if (IsMipsArchVariant(kMips32r6) && bdslot == PROTECT) { |
| 3938 | uint32_t lui_offset, jic_offset; |
| 3939 | UnpackTargetAddressUnsigned(imm32, lui_offset, jic_offset); |
| 3940 | { |
| 3941 | BlockGrowBufferScope block_buf_growth(this); |
| 3942 | // Buffer growth (and relocation) must be blocked for internal |
| 3943 | // references until associated instructions are emitted and |
| 3944 | // available to be patched. |
| 3945 | RecordRelocInfo(RelocInfo::INTERNAL_REFERENCE_ENCODED); |
| 3946 | lui(at, lui_offset); |
| 3947 | jialc(at, jic_offset); |
| 3948 | } |
| 3949 | CheckBuffer(); |
| 3950 | } else { |
| 3951 | { |
| 3952 | BlockGrowBufferScope block_buf_growth(this); |
| 3953 | // Buffer growth (and relocation) must be blocked for internal |
| 3954 | // references |
| 3955 | // until associated instructions are emitted and available to be |
| 3956 | // patched. |
| 3957 | RecordRelocInfo(RelocInfo::INTERNAL_REFERENCE_ENCODED); |
| 3958 | lui(at, (imm32 & kHiMask) >> kLuiShift); |
| 3959 | ori(at, at, (imm32 & kImm16Mask)); |
| 3960 | } |
| 3961 | CheckBuffer(); |
| 3962 | jalr(at); |
| 3963 | // Emit a nop in the branch delay slot if required. |
| 3964 | if (bdslot == PROTECT) nop(); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3965 | } |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 3966 | } |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3967 | } |
| 3968 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3969 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3970 | void MacroAssembler::DropAndRet(int drop) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3971 | DCHECK(is_int16(drop * kPointerSize)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3972 | Ret(USE_DELAY_SLOT); |
| 3973 | addiu(sp, sp, drop * kPointerSize); |
| 3974 | } |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3975 | |
| 3976 | void MacroAssembler::DropAndRet(int drop, |
| 3977 | Condition cond, |
| 3978 | Register r1, |
| 3979 | const Operand& r2) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3980 | // Both Drop and Ret need to be conditional. |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3981 | Label skip; |
| 3982 | if (cond != cc_always) { |
| 3983 | Branch(&skip, NegateCondition(cond), r1, r2); |
| 3984 | } |
| 3985 | |
| 3986 | Drop(drop); |
| 3987 | Ret(); |
| 3988 | |
| 3989 | if (cond != cc_always) { |
| 3990 | bind(&skip); |
| 3991 | } |
| 3992 | } |
| 3993 | |
| 3994 | |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 3995 | void MacroAssembler::Drop(int count, |
| 3996 | Condition cond, |
| 3997 | Register reg, |
| 3998 | const Operand& op) { |
| 3999 | if (count <= 0) { |
| 4000 | return; |
| 4001 | } |
| 4002 | |
| 4003 | Label skip; |
| 4004 | |
| 4005 | if (cond != al) { |
| 4006 | Branch(&skip, NegateCondition(cond), reg, op); |
| 4007 | } |
| 4008 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4009 | Addu(sp, sp, Operand(count * kPointerSize)); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 4010 | |
| 4011 | if (cond != al) { |
| 4012 | bind(&skip); |
| 4013 | } |
| 4014 | } |
| 4015 | |
| 4016 | |
| 4017 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4018 | void MacroAssembler::Swap(Register reg1, |
| 4019 | Register reg2, |
| 4020 | Register scratch) { |
| 4021 | if (scratch.is(no_reg)) { |
| 4022 | Xor(reg1, reg1, Operand(reg2)); |
| 4023 | Xor(reg2, reg2, Operand(reg1)); |
| 4024 | Xor(reg1, reg1, Operand(reg2)); |
| 4025 | } else { |
| 4026 | mov(scratch, reg1); |
| 4027 | mov(reg1, reg2); |
| 4028 | mov(reg2, scratch); |
| 4029 | } |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 4030 | } |
| 4031 | |
| 4032 | |
| 4033 | void MacroAssembler::Call(Label* target) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4034 | BranchAndLink(target); |
| 4035 | } |
| 4036 | |
| 4037 | |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 4038 | void MacroAssembler::Push(Handle<Object> handle) { |
| 4039 | li(at, Operand(handle)); |
| 4040 | push(at); |
| 4041 | } |
| 4042 | |
| 4043 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4044 | void MacroAssembler::DebugBreak() { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4045 | PrepareCEntryArgs(0); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4046 | PrepareCEntryFunction( |
| 4047 | ExternalReference(Runtime::kHandleDebuggerStatement, isolate())); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4048 | CEntryStub ces(isolate(), 1); |
| 4049 | DCHECK(AllowThisStubCall(&ces)); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4050 | Call(ces.GetCode(), RelocInfo::DEBUGGER_STATEMENT); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4051 | } |
| 4052 | |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 4053 | |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 4054 | // --------------------------------------------------------------------------- |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4055 | // Exception handling. |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 4056 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4057 | void MacroAssembler::PushStackHandler() { |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 4058 | // Adjust this code if not the case. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4059 | STATIC_ASSERT(StackHandlerConstants::kSize == 1 * kPointerSize); |
Ben Murdoch | 69a99ed | 2011-11-30 16:03:39 +0000 | [diff] [blame] | 4060 | STATIC_ASSERT(StackHandlerConstants::kNextOffset == 0 * kPointerSize); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4061 | |
| 4062 | // Link the current handler as the next handler. |
| 4063 | li(t2, Operand(ExternalReference(Isolate::kHandlerAddress, isolate()))); |
| 4064 | lw(t1, MemOperand(t2)); |
| 4065 | push(t1); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4066 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4067 | // Set this new handler as the current one. |
| 4068 | sw(sp, MemOperand(t2)); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 4069 | } |
| 4070 | |
| 4071 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4072 | void MacroAssembler::PopStackHandler() { |
Ben Murdoch | 69a99ed | 2011-11-30 16:03:39 +0000 | [diff] [blame] | 4073 | STATIC_ASSERT(StackHandlerConstants::kNextOffset == 0); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4074 | pop(a1); |
| 4075 | Addu(sp, sp, Operand(StackHandlerConstants::kSize - kPointerSize)); |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 4076 | li(at, Operand(ExternalReference(Isolate::kHandlerAddress, isolate()))); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4077 | sw(a1, MemOperand(at)); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 4078 | } |
| 4079 | |
| 4080 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4081 | void MacroAssembler::Allocate(int object_size, |
| 4082 | Register result, |
| 4083 | Register scratch1, |
| 4084 | Register scratch2, |
| 4085 | Label* gc_required, |
| 4086 | AllocationFlags flags) { |
| 4087 | DCHECK(object_size <= Page::kMaxRegularHeapObjectSize); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame^] | 4088 | DCHECK((flags & ALLOCATION_FOLDED) == 0); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4089 | if (!FLAG_inline_new) { |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4090 | if (emit_debug_code()) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4091 | // Trash the registers to simulate an allocation failure. |
| 4092 | li(result, 0x7091); |
| 4093 | li(scratch1, 0x7191); |
| 4094 | li(scratch2, 0x7291); |
| 4095 | } |
| 4096 | jmp(gc_required); |
| 4097 | return; |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 4098 | } |
| 4099 | |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 4100 | DCHECK(!AreAliased(result, scratch1, scratch2, t9, at)); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 4101 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4102 | // Make object size into bytes. |
| 4103 | if ((flags & SIZE_IN_WORDS) != 0) { |
| 4104 | object_size *= kPointerSize; |
| 4105 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4106 | DCHECK_EQ(0, object_size & kObjectAlignmentMask); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 4107 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4108 | // Check relative positions of allocation top and limit addresses. |
| 4109 | // ARM adds additional checks to make sure the ldm instruction can be |
| 4110 | // 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] | 4111 | ExternalReference allocation_top = |
| 4112 | AllocationUtils::GetAllocationTopReference(isolate(), flags); |
| 4113 | ExternalReference allocation_limit = |
| 4114 | AllocationUtils::GetAllocationLimitReference(isolate(), flags); |
| 4115 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4116 | intptr_t top = reinterpret_cast<intptr_t>(allocation_top.address()); |
| 4117 | intptr_t limit = reinterpret_cast<intptr_t>(allocation_limit.address()); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4118 | DCHECK((limit - top) == kPointerSize); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4119 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4120 | // Set up allocation top address and allocation limit registers. |
| 4121 | Register top_address = scratch1; |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4122 | // This code stores a temporary value in t9. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4123 | Register alloc_limit = t9; |
| 4124 | Register result_end = scratch2; |
| 4125 | li(top_address, Operand(allocation_top)); |
| 4126 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4127 | if ((flags & RESULT_CONTAINS_TOP) == 0) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4128 | // Load allocation top into result and allocation limit into alloc_limit. |
| 4129 | lw(result, MemOperand(top_address)); |
| 4130 | lw(alloc_limit, MemOperand(top_address, kPointerSize)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4131 | } else { |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4132 | if (emit_debug_code()) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4133 | // Assert that result actually contains top on entry. |
| 4134 | lw(alloc_limit, MemOperand(top_address)); |
| 4135 | Check(eq, kUnexpectedAllocationTop, result, Operand(alloc_limit)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4136 | } |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4137 | // Load allocation limit. Result already contains allocation top. |
| 4138 | lw(alloc_limit, MemOperand(top_address, limit - top)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4139 | } |
| 4140 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4141 | if ((flags & DOUBLE_ALIGNMENT) != 0) { |
| 4142 | // Align the next allocation. Storing the filler map without checking top is |
| 4143 | // 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] | 4144 | DCHECK(kPointerAlignment * 2 == kDoubleAlignment); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4145 | And(result_end, result, Operand(kDoubleAlignmentMask)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4146 | Label aligned; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4147 | Branch(&aligned, eq, result_end, Operand(zero_reg)); |
| 4148 | if ((flags & PRETENURE) != 0) { |
| 4149 | Branch(gc_required, Ugreater_equal, result, Operand(alloc_limit)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4150 | } |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4151 | li(result_end, Operand(isolate()->factory()->one_pointer_filler_map())); |
| 4152 | sw(result_end, MemOperand(result)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4153 | Addu(result, result, Operand(kDoubleSize / 2)); |
| 4154 | bind(&aligned); |
| 4155 | } |
| 4156 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4157 | // Calculate new top and bail out if new space is exhausted. Use result |
| 4158 | // to calculate the new top. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4159 | Addu(result_end, result, Operand(object_size)); |
| 4160 | Branch(gc_required, Ugreater, result_end, Operand(alloc_limit)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4161 | |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame^] | 4162 | if ((flags & ALLOCATION_FOLDING_DOMINATOR) == 0) { |
| 4163 | // The top pointer is not updated for allocation folding dominators. |
| 4164 | sw(result_end, MemOperand(top_address)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4165 | } |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame^] | 4166 | |
| 4167 | // Tag object. |
| 4168 | Addu(result, result, Operand(kHeapObjectTag)); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 4169 | } |
| 4170 | |
| 4171 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4172 | void MacroAssembler::Allocate(Register object_size, Register result, |
| 4173 | Register result_end, Register scratch, |
| 4174 | Label* gc_required, AllocationFlags flags) { |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame^] | 4175 | DCHECK((flags & ALLOCATION_FOLDED) == 0); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4176 | if (!FLAG_inline_new) { |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4177 | if (emit_debug_code()) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4178 | // Trash the registers to simulate an allocation failure. |
| 4179 | li(result, 0x7091); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4180 | li(scratch, 0x7191); |
| 4181 | li(result_end, 0x7291); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4182 | } |
| 4183 | jmp(gc_required); |
| 4184 | return; |
| 4185 | } |
| 4186 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4187 | // |object_size| and |result_end| may overlap if the DOUBLE_ALIGNMENT flag |
| 4188 | // is not specified. Other registers must not overlap. |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 4189 | DCHECK(!AreAliased(object_size, result, scratch, t9, at)); |
| 4190 | DCHECK(!AreAliased(result_end, result, scratch, t9, at)); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4191 | DCHECK((flags & DOUBLE_ALIGNMENT) == 0 || !object_size.is(result_end)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4192 | |
| 4193 | // Check relative positions of allocation top and limit addresses. |
| 4194 | // ARM adds additional checks to make sure the ldm instruction can be |
| 4195 | // 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] | 4196 | ExternalReference allocation_top = |
| 4197 | AllocationUtils::GetAllocationTopReference(isolate(), flags); |
| 4198 | ExternalReference allocation_limit = |
| 4199 | AllocationUtils::GetAllocationLimitReference(isolate(), flags); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4200 | intptr_t top = reinterpret_cast<intptr_t>(allocation_top.address()); |
| 4201 | intptr_t limit = reinterpret_cast<intptr_t>(allocation_limit.address()); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4202 | DCHECK((limit - top) == kPointerSize); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4203 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4204 | // Set up allocation top address and allocation limit registers. |
| 4205 | Register top_address = scratch; |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4206 | // This code stores a temporary value in t9. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4207 | Register alloc_limit = t9; |
| 4208 | li(top_address, Operand(allocation_top)); |
| 4209 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4210 | if ((flags & RESULT_CONTAINS_TOP) == 0) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4211 | // Load allocation top into result and allocation limit into alloc_limit. |
| 4212 | lw(result, MemOperand(top_address)); |
| 4213 | lw(alloc_limit, MemOperand(top_address, kPointerSize)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4214 | } else { |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4215 | if (emit_debug_code()) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4216 | // Assert that result actually contains top on entry. |
| 4217 | lw(alloc_limit, MemOperand(top_address)); |
| 4218 | Check(eq, kUnexpectedAllocationTop, result, Operand(alloc_limit)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4219 | } |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4220 | // Load allocation limit. Result already contains allocation top. |
| 4221 | lw(alloc_limit, MemOperand(top_address, limit - top)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4222 | } |
| 4223 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4224 | if ((flags & DOUBLE_ALIGNMENT) != 0) { |
| 4225 | // Align the next allocation. Storing the filler map without checking top is |
| 4226 | // 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] | 4227 | DCHECK(kPointerAlignment * 2 == kDoubleAlignment); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4228 | And(result_end, result, Operand(kDoubleAlignmentMask)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4229 | Label aligned; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4230 | Branch(&aligned, eq, result_end, Operand(zero_reg)); |
| 4231 | if ((flags & PRETENURE) != 0) { |
| 4232 | Branch(gc_required, Ugreater_equal, result, Operand(alloc_limit)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4233 | } |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4234 | li(result_end, Operand(isolate()->factory()->one_pointer_filler_map())); |
| 4235 | sw(result_end, MemOperand(result)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4236 | Addu(result, result, Operand(kDoubleSize / 2)); |
| 4237 | bind(&aligned); |
| 4238 | } |
| 4239 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4240 | // Calculate new top and bail out if new space is exhausted. Use result |
| 4241 | // to calculate the new top. Object size may be in words so a shift is |
| 4242 | // required to get the number of bytes. |
| 4243 | if ((flags & SIZE_IN_WORDS) != 0) { |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 4244 | Lsa(result_end, result, object_size, kPointerSizeLog2); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4245 | } else { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4246 | Addu(result_end, result, Operand(object_size)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4247 | } |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame^] | 4248 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4249 | Branch(gc_required, Ugreater, result_end, Operand(alloc_limit)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4250 | |
| 4251 | // Update allocation top. result temporarily holds the new top. |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4252 | if (emit_debug_code()) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4253 | And(alloc_limit, result_end, Operand(kObjectAlignmentMask)); |
| 4254 | Check(eq, kUnalignedAllocationInNewSpace, alloc_limit, Operand(zero_reg)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4255 | } |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4256 | |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame^] | 4257 | if ((flags & ALLOCATION_FOLDING_DOMINATOR) == 0) { |
| 4258 | // The top pointer is not updated for allocation folding dominators. |
| 4259 | sw(result_end, MemOperand(top_address)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4260 | } |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame^] | 4261 | |
| 4262 | // Tag object. |
| 4263 | Addu(result, result, Operand(kHeapObjectTag)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4264 | } |
| 4265 | |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame^] | 4266 | void MacroAssembler::FastAllocate(int object_size, Register result, |
| 4267 | Register scratch1, Register scratch2, |
| 4268 | AllocationFlags flags) { |
| 4269 | DCHECK(object_size <= Page::kMaxRegularHeapObjectSize); |
| 4270 | DCHECK(!AreAliased(result, scratch1, scratch2, t9, at)); |
| 4271 | |
| 4272 | // Make object size into bytes. |
| 4273 | if ((flags & SIZE_IN_WORDS) != 0) { |
| 4274 | object_size *= kPointerSize; |
| 4275 | } |
| 4276 | DCHECK_EQ(0, object_size & kObjectAlignmentMask); |
| 4277 | |
| 4278 | ExternalReference allocation_top = |
| 4279 | AllocationUtils::GetAllocationTopReference(isolate(), flags); |
| 4280 | |
| 4281 | // Set up allocation top address and allocation limit registers. |
| 4282 | Register top_address = scratch1; |
| 4283 | // This code stores a temporary value in t9. |
| 4284 | Register result_end = scratch2; |
| 4285 | li(top_address, Operand(allocation_top)); |
| 4286 | lw(result, MemOperand(top_address)); |
| 4287 | |
| 4288 | if ((flags & DOUBLE_ALIGNMENT) != 0) { |
| 4289 | // Align the next allocation. Storing the filler map without checking top is |
| 4290 | // safe in new-space because the limit of the heap is aligned there. |
| 4291 | DCHECK(kPointerAlignment * 2 == kDoubleAlignment); |
| 4292 | And(result_end, result, Operand(kDoubleAlignmentMask)); |
| 4293 | Label aligned; |
| 4294 | Branch(&aligned, eq, result_end, Operand(zero_reg)); |
| 4295 | li(result_end, Operand(isolate()->factory()->one_pointer_filler_map())); |
| 4296 | sw(result_end, MemOperand(result)); |
| 4297 | Addu(result, result, Operand(kDoubleSize / 2)); |
| 4298 | bind(&aligned); |
| 4299 | } |
| 4300 | |
| 4301 | Addu(result_end, result, Operand(object_size)); |
| 4302 | |
| 4303 | // The top pointer is not updated for allocation folding dominators. |
| 4304 | sw(result_end, MemOperand(top_address)); |
| 4305 | |
| 4306 | Addu(result, result, Operand(kHeapObjectTag)); |
| 4307 | } |
| 4308 | |
| 4309 | void MacroAssembler::FastAllocate(Register object_size, Register result, |
| 4310 | Register result_end, Register scratch, |
| 4311 | AllocationFlags flags) { |
| 4312 | // |object_size| and |result_end| may overlap if the DOUBLE_ALIGNMENT flag |
| 4313 | // is not specified. Other registers must not overlap. |
| 4314 | DCHECK(!AreAliased(object_size, result, scratch, t9, at)); |
| 4315 | DCHECK(!AreAliased(result_end, result, scratch, t9, at)); |
| 4316 | DCHECK((flags & DOUBLE_ALIGNMENT) == 0 || !object_size.is(result_end)); |
| 4317 | |
| 4318 | ExternalReference allocation_top = |
| 4319 | AllocationUtils::GetAllocationTopReference(isolate(), flags); |
| 4320 | |
| 4321 | // Set up allocation top address and allocation limit registers. |
| 4322 | Register top_address = scratch; |
| 4323 | // This code stores a temporary value in t9. |
| 4324 | li(top_address, Operand(allocation_top)); |
| 4325 | lw(result, MemOperand(top_address)); |
| 4326 | |
| 4327 | if ((flags & DOUBLE_ALIGNMENT) != 0) { |
| 4328 | // Align the next allocation. Storing the filler map without checking top is |
| 4329 | // safe in new-space because the limit of the heap is aligned there. |
| 4330 | DCHECK(kPointerAlignment * 2 == kDoubleAlignment); |
| 4331 | And(result_end, result, Operand(kDoubleAlignmentMask)); |
| 4332 | Label aligned; |
| 4333 | Branch(&aligned, eq, result_end, Operand(zero_reg)); |
| 4334 | li(result_end, Operand(isolate()->factory()->one_pointer_filler_map())); |
| 4335 | sw(result_end, MemOperand(result)); |
| 4336 | Addu(result, result, Operand(kDoubleSize / 2)); |
| 4337 | bind(&aligned); |
| 4338 | } |
| 4339 | |
| 4340 | // Calculate new top and bail out if new space is exhausted. Use result |
| 4341 | // to calculate the new top. Object size may be in words so a shift is |
| 4342 | // required to get the number of bytes. |
| 4343 | if ((flags & SIZE_IN_WORDS) != 0) { |
| 4344 | Lsa(result_end, result, object_size, kPointerSizeLog2); |
| 4345 | } else { |
| 4346 | Addu(result_end, result, Operand(object_size)); |
| 4347 | } |
| 4348 | |
| 4349 | // The top pointer is not updated for allocation folding dominators. |
| 4350 | sw(result_end, MemOperand(top_address)); |
| 4351 | |
| 4352 | Addu(result, result, Operand(kHeapObjectTag)); |
| 4353 | } |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4354 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4355 | void MacroAssembler::AllocateTwoByteString(Register result, |
| 4356 | Register length, |
| 4357 | Register scratch1, |
| 4358 | Register scratch2, |
| 4359 | Register scratch3, |
| 4360 | Label* gc_required) { |
| 4361 | // Calculate the number of bytes needed for the characters in the string while |
| 4362 | // observing object alignment. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4363 | DCHECK((SeqTwoByteString::kHeaderSize & kObjectAlignmentMask) == 0); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4364 | sll(scratch1, length, 1); // Length in bytes, not chars. |
| 4365 | addiu(scratch1, scratch1, |
| 4366 | kObjectAlignmentMask + SeqTwoByteString::kHeaderSize); |
| 4367 | And(scratch1, scratch1, Operand(~kObjectAlignmentMask)); |
| 4368 | |
| 4369 | // Allocate two-byte string in new space. |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame^] | 4370 | Allocate(scratch1, result, scratch2, scratch3, gc_required, |
| 4371 | NO_ALLOCATION_FLAGS); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4372 | |
| 4373 | // Set the map, length and hash field. |
| 4374 | InitializeNewString(result, |
| 4375 | length, |
| 4376 | Heap::kStringMapRootIndex, |
| 4377 | scratch1, |
| 4378 | scratch2); |
| 4379 | } |
| 4380 | |
| 4381 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4382 | void MacroAssembler::AllocateOneByteString(Register result, Register length, |
| 4383 | Register scratch1, Register scratch2, |
| 4384 | Register scratch3, |
| 4385 | Label* gc_required) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4386 | // Calculate the number of bytes needed for the characters in the string |
| 4387 | // while observing object alignment. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4388 | DCHECK((SeqOneByteString::kHeaderSize & kObjectAlignmentMask) == 0); |
| 4389 | DCHECK(kCharSize == 1); |
| 4390 | addiu(scratch1, length, kObjectAlignmentMask + SeqOneByteString::kHeaderSize); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4391 | And(scratch1, scratch1, Operand(~kObjectAlignmentMask)); |
| 4392 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4393 | // Allocate one-byte string in new space. |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame^] | 4394 | Allocate(scratch1, result, scratch2, scratch3, gc_required, |
| 4395 | NO_ALLOCATION_FLAGS); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4396 | |
| 4397 | // Set the map, length and hash field. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4398 | InitializeNewString(result, length, Heap::kOneByteStringMapRootIndex, |
| 4399 | scratch1, scratch2); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4400 | } |
| 4401 | |
| 4402 | |
| 4403 | void MacroAssembler::AllocateTwoByteConsString(Register result, |
| 4404 | Register length, |
| 4405 | Register scratch1, |
| 4406 | Register scratch2, |
| 4407 | Label* gc_required) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4408 | Allocate(ConsString::kSize, result, scratch1, scratch2, gc_required, |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame^] | 4409 | NO_ALLOCATION_FLAGS); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4410 | InitializeNewString(result, |
| 4411 | length, |
| 4412 | Heap::kConsStringMapRootIndex, |
| 4413 | scratch1, |
| 4414 | scratch2); |
| 4415 | } |
| 4416 | |
| 4417 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4418 | void MacroAssembler::AllocateOneByteConsString(Register result, Register length, |
| 4419 | Register scratch1, |
| 4420 | Register scratch2, |
| 4421 | Label* gc_required) { |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame^] | 4422 | Allocate(ConsString::kSize, result, scratch1, scratch2, gc_required, |
| 4423 | NO_ALLOCATION_FLAGS); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4424 | |
| 4425 | InitializeNewString(result, length, Heap::kConsOneByteStringMapRootIndex, |
| 4426 | scratch1, scratch2); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4427 | } |
| 4428 | |
| 4429 | |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 4430 | void MacroAssembler::AllocateTwoByteSlicedString(Register result, |
| 4431 | Register length, |
| 4432 | Register scratch1, |
| 4433 | Register scratch2, |
| 4434 | Label* gc_required) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4435 | Allocate(SlicedString::kSize, result, scratch1, scratch2, gc_required, |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame^] | 4436 | NO_ALLOCATION_FLAGS); |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 4437 | |
| 4438 | InitializeNewString(result, |
| 4439 | length, |
| 4440 | Heap::kSlicedStringMapRootIndex, |
| 4441 | scratch1, |
| 4442 | scratch2); |
| 4443 | } |
| 4444 | |
| 4445 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4446 | void MacroAssembler::AllocateOneByteSlicedString(Register result, |
| 4447 | Register length, |
| 4448 | Register scratch1, |
| 4449 | Register scratch2, |
| 4450 | Label* gc_required) { |
| 4451 | Allocate(SlicedString::kSize, result, scratch1, scratch2, gc_required, |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame^] | 4452 | NO_ALLOCATION_FLAGS); |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 4453 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4454 | InitializeNewString(result, length, Heap::kSlicedOneByteStringMapRootIndex, |
| 4455 | scratch1, scratch2); |
| 4456 | } |
| 4457 | |
| 4458 | |
| 4459 | void MacroAssembler::JumpIfNotUniqueNameInstanceType(Register reg, |
| 4460 | Label* not_unique_name) { |
| 4461 | STATIC_ASSERT(kInternalizedTag == 0 && kStringTag == 0); |
| 4462 | Label succeed; |
| 4463 | And(at, reg, Operand(kIsNotStringMask | kIsNotInternalizedMask)); |
| 4464 | Branch(&succeed, eq, at, Operand(zero_reg)); |
| 4465 | Branch(not_unique_name, ne, reg, Operand(SYMBOL_TYPE)); |
| 4466 | |
| 4467 | bind(&succeed); |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 4468 | } |
| 4469 | |
| 4470 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4471 | // Allocates a heap number or jumps to the label if the young space is full and |
| 4472 | // a scavenge is needed. |
| 4473 | void MacroAssembler::AllocateHeapNumber(Register result, |
| 4474 | Register scratch1, |
| 4475 | Register scratch2, |
| 4476 | Register heap_number_map, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4477 | Label* need_gc, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4478 | MutableMode mode) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4479 | // Allocate an object in the heap for the heap number and tag it as a heap |
| 4480 | // object. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4481 | Allocate(HeapNumber::kSize, result, scratch1, scratch2, need_gc, |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame^] | 4482 | NO_ALLOCATION_FLAGS); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4483 | |
| 4484 | Heap::RootListIndex map_index = mode == MUTABLE |
| 4485 | ? Heap::kMutableHeapNumberMapRootIndex |
| 4486 | : Heap::kHeapNumberMapRootIndex; |
| 4487 | AssertIsRoot(heap_number_map, map_index); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4488 | |
| 4489 | // Store heap number map in the allocated object. |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame^] | 4490 | sw(heap_number_map, FieldMemOperand(result, HeapObject::kMapOffset)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4491 | } |
| 4492 | |
| 4493 | |
| 4494 | void MacroAssembler::AllocateHeapNumberWithValue(Register result, |
| 4495 | FPURegister value, |
| 4496 | Register scratch1, |
| 4497 | Register scratch2, |
| 4498 | Label* gc_required) { |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 4499 | LoadRoot(t8, Heap::kHeapNumberMapRootIndex); |
| 4500 | AllocateHeapNumber(result, scratch1, scratch2, t8, gc_required); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4501 | sdc1(value, FieldMemOperand(result, HeapNumber::kValueOffset)); |
| 4502 | } |
| 4503 | |
| 4504 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4505 | void MacroAssembler::AllocateJSValue(Register result, Register constructor, |
| 4506 | Register value, Register scratch1, |
| 4507 | Register scratch2, Label* gc_required) { |
| 4508 | DCHECK(!result.is(constructor)); |
| 4509 | DCHECK(!result.is(scratch1)); |
| 4510 | DCHECK(!result.is(scratch2)); |
| 4511 | DCHECK(!result.is(value)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4512 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4513 | // Allocate JSValue in new space. |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame^] | 4514 | Allocate(JSValue::kSize, result, scratch1, scratch2, gc_required, |
| 4515 | NO_ALLOCATION_FLAGS); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4516 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4517 | // Initialize the JSValue. |
| 4518 | LoadGlobalFunctionInitialMap(constructor, scratch1, scratch2); |
| 4519 | sw(scratch1, FieldMemOperand(result, HeapObject::kMapOffset)); |
| 4520 | LoadRoot(scratch1, Heap::kEmptyFixedArrayRootIndex); |
| 4521 | sw(scratch1, FieldMemOperand(result, JSObject::kPropertiesOffset)); |
| 4522 | sw(scratch1, FieldMemOperand(result, JSObject::kElementsOffset)); |
| 4523 | sw(value, FieldMemOperand(result, JSValue::kValueOffset)); |
| 4524 | STATIC_ASSERT(JSValue::kSize == 4 * kPointerSize); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4525 | } |
| 4526 | |
| 4527 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4528 | void MacroAssembler::CopyBytes(Register src, |
| 4529 | Register dst, |
| 4530 | Register length, |
| 4531 | Register scratch) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4532 | Label align_loop_1, word_loop, byte_loop, byte_loop_1, done; |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4533 | |
| 4534 | // Align src before copying in word size chunks. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4535 | Branch(&byte_loop, le, length, Operand(kPointerSize)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4536 | bind(&align_loop_1); |
| 4537 | And(scratch, src, kPointerSize - 1); |
| 4538 | Branch(&word_loop, eq, scratch, Operand(zero_reg)); |
| 4539 | lbu(scratch, MemOperand(src)); |
| 4540 | Addu(src, src, 1); |
| 4541 | sb(scratch, MemOperand(dst)); |
| 4542 | Addu(dst, dst, 1); |
| 4543 | Subu(length, length, Operand(1)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4544 | Branch(&align_loop_1, ne, length, Operand(zero_reg)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4545 | |
| 4546 | // Copy bytes in word size chunks. |
| 4547 | bind(&word_loop); |
| 4548 | if (emit_debug_code()) { |
| 4549 | And(scratch, src, kPointerSize - 1); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4550 | Assert(eq, kExpectingAlignmentForCopyBytes, |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4551 | scratch, Operand(zero_reg)); |
| 4552 | } |
| 4553 | Branch(&byte_loop, lt, length, Operand(kPointerSize)); |
| 4554 | lw(scratch, MemOperand(src)); |
| 4555 | Addu(src, src, kPointerSize); |
| 4556 | |
| 4557 | // TODO(kalmard) check if this can be optimized to use sw in most cases. |
| 4558 | // Can't use unaligned access - copy byte by byte. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4559 | if (kArchEndian == kLittle) { |
| 4560 | sb(scratch, MemOperand(dst, 0)); |
| 4561 | srl(scratch, scratch, 8); |
| 4562 | sb(scratch, MemOperand(dst, 1)); |
| 4563 | srl(scratch, scratch, 8); |
| 4564 | sb(scratch, MemOperand(dst, 2)); |
| 4565 | srl(scratch, scratch, 8); |
| 4566 | sb(scratch, MemOperand(dst, 3)); |
| 4567 | } else { |
| 4568 | sb(scratch, MemOperand(dst, 3)); |
| 4569 | srl(scratch, scratch, 8); |
| 4570 | sb(scratch, MemOperand(dst, 2)); |
| 4571 | srl(scratch, scratch, 8); |
| 4572 | sb(scratch, MemOperand(dst, 1)); |
| 4573 | srl(scratch, scratch, 8); |
| 4574 | sb(scratch, MemOperand(dst, 0)); |
| 4575 | } |
| 4576 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4577 | Addu(dst, dst, 4); |
| 4578 | |
| 4579 | Subu(length, length, Operand(kPointerSize)); |
| 4580 | Branch(&word_loop); |
| 4581 | |
| 4582 | // Copy the last bytes if any left. |
| 4583 | bind(&byte_loop); |
| 4584 | Branch(&done, eq, length, Operand(zero_reg)); |
| 4585 | bind(&byte_loop_1); |
| 4586 | lbu(scratch, MemOperand(src)); |
| 4587 | Addu(src, src, 1); |
| 4588 | sb(scratch, MemOperand(dst)); |
| 4589 | Addu(dst, dst, 1); |
| 4590 | Subu(length, length, Operand(1)); |
| 4591 | Branch(&byte_loop_1, ne, length, Operand(zero_reg)); |
| 4592 | bind(&done); |
| 4593 | } |
| 4594 | |
| 4595 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4596 | void MacroAssembler::InitializeFieldsWithFiller(Register current_address, |
| 4597 | Register end_address, |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4598 | Register filler) { |
| 4599 | Label loop, entry; |
| 4600 | Branch(&entry); |
| 4601 | bind(&loop); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4602 | sw(filler, MemOperand(current_address)); |
| 4603 | Addu(current_address, current_address, kPointerSize); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4604 | bind(&entry); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4605 | Branch(&loop, ult, current_address, Operand(end_address)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4606 | } |
| 4607 | |
| 4608 | |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 4609 | void MacroAssembler::CheckFastElements(Register map, |
| 4610 | Register scratch, |
| 4611 | Label* fail) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4612 | STATIC_ASSERT(FAST_SMI_ELEMENTS == 0); |
| 4613 | STATIC_ASSERT(FAST_HOLEY_SMI_ELEMENTS == 1); |
| 4614 | STATIC_ASSERT(FAST_ELEMENTS == 2); |
| 4615 | STATIC_ASSERT(FAST_HOLEY_ELEMENTS == 3); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 4616 | lbu(scratch, FieldMemOperand(map, Map::kBitField2Offset)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4617 | Branch(fail, hi, scratch, |
| 4618 | Operand(Map::kMaximumBitField2FastHoleyElementValue)); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 4619 | } |
| 4620 | |
| 4621 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4622 | void MacroAssembler::CheckFastObjectElements(Register map, |
| 4623 | Register scratch, |
| 4624 | Label* fail) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4625 | STATIC_ASSERT(FAST_SMI_ELEMENTS == 0); |
| 4626 | STATIC_ASSERT(FAST_HOLEY_SMI_ELEMENTS == 1); |
| 4627 | STATIC_ASSERT(FAST_ELEMENTS == 2); |
| 4628 | STATIC_ASSERT(FAST_HOLEY_ELEMENTS == 3); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4629 | lbu(scratch, FieldMemOperand(map, Map::kBitField2Offset)); |
| 4630 | Branch(fail, ls, scratch, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4631 | Operand(Map::kMaximumBitField2FastHoleySmiElementValue)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4632 | Branch(fail, hi, scratch, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4633 | Operand(Map::kMaximumBitField2FastHoleyElementValue)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4634 | } |
| 4635 | |
| 4636 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4637 | void MacroAssembler::CheckFastSmiElements(Register map, |
| 4638 | Register scratch, |
| 4639 | Label* fail) { |
| 4640 | STATIC_ASSERT(FAST_SMI_ELEMENTS == 0); |
| 4641 | STATIC_ASSERT(FAST_HOLEY_SMI_ELEMENTS == 1); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4642 | lbu(scratch, FieldMemOperand(map, Map::kBitField2Offset)); |
| 4643 | Branch(fail, hi, scratch, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4644 | Operand(Map::kMaximumBitField2FastHoleySmiElementValue)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4645 | } |
| 4646 | |
| 4647 | |
| 4648 | void MacroAssembler::StoreNumberToDoubleElements(Register value_reg, |
| 4649 | Register key_reg, |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4650 | Register elements_reg, |
| 4651 | Register scratch1, |
| 4652 | Register scratch2, |
| 4653 | Register scratch3, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4654 | Label* fail, |
| 4655 | int elements_offset) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4656 | DCHECK(!AreAliased(value_reg, key_reg, elements_reg, scratch1, scratch2, |
| 4657 | scratch3)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4658 | Label smi_value, maybe_nan, have_double_value, is_nan, done; |
| 4659 | Register mantissa_reg = scratch2; |
| 4660 | Register exponent_reg = scratch3; |
| 4661 | |
| 4662 | // Handle smi values specially. |
| 4663 | JumpIfSmi(value_reg, &smi_value); |
| 4664 | |
| 4665 | // Ensure that the object is a heap number |
| 4666 | CheckMap(value_reg, |
| 4667 | scratch1, |
| 4668 | Heap::kHeapNumberMapRootIndex, |
| 4669 | fail, |
| 4670 | DONT_DO_SMI_CHECK); |
| 4671 | |
| 4672 | // Check for nan: all NaN values have a value greater (signed) than 0x7ff00000 |
| 4673 | // in the exponent. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4674 | li(scratch1, Operand(kHoleNanUpper32 & HeapNumber::kExponentMask)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4675 | lw(exponent_reg, FieldMemOperand(value_reg, HeapNumber::kExponentOffset)); |
| 4676 | Branch(&maybe_nan, ge, exponent_reg, Operand(scratch1)); |
| 4677 | |
| 4678 | lw(mantissa_reg, FieldMemOperand(value_reg, HeapNumber::kMantissaOffset)); |
| 4679 | |
| 4680 | bind(&have_double_value); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 4681 | Lsa(scratch1, elements_reg, key_reg, kDoubleSizeLog2 - kSmiTagSize); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4682 | sw(mantissa_reg, |
| 4683 | FieldMemOperand(scratch1, FixedDoubleArray::kHeaderSize - elements_offset |
| 4684 | + kHoleNanLower32Offset)); |
| 4685 | sw(exponent_reg, |
| 4686 | FieldMemOperand(scratch1, FixedDoubleArray::kHeaderSize - elements_offset |
| 4687 | + kHoleNanUpper32Offset)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4688 | jmp(&done); |
| 4689 | |
| 4690 | bind(&maybe_nan); |
| 4691 | // Could be NaN or Infinity. If fraction is not zero, it's NaN, otherwise |
| 4692 | // it's an Infinity, and the non-NaN code path applies. |
| 4693 | Branch(&is_nan, gt, exponent_reg, Operand(scratch1)); |
| 4694 | lw(mantissa_reg, FieldMemOperand(value_reg, HeapNumber::kMantissaOffset)); |
| 4695 | Branch(&have_double_value, eq, mantissa_reg, Operand(zero_reg)); |
| 4696 | bind(&is_nan); |
| 4697 | // Load canonical NaN for storing into the double array. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4698 | LoadRoot(at, Heap::kNanValueRootIndex); |
| 4699 | lw(mantissa_reg, FieldMemOperand(at, HeapNumber::kMantissaOffset)); |
| 4700 | lw(exponent_reg, FieldMemOperand(at, HeapNumber::kExponentOffset)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4701 | jmp(&have_double_value); |
| 4702 | |
| 4703 | bind(&smi_value); |
| 4704 | Addu(scratch1, elements_reg, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4705 | Operand(FixedDoubleArray::kHeaderSize - kHeapObjectTag - |
| 4706 | elements_offset)); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 4707 | Lsa(scratch1, scratch1, key_reg, kDoubleSizeLog2 - kSmiTagSize); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4708 | // scratch1 is now effective address of the double element |
| 4709 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4710 | Register untagged_value = scratch2; |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4711 | SmiUntag(untagged_value, value_reg); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4712 | mtc1(untagged_value, f2); |
| 4713 | cvt_d_w(f0, f2); |
| 4714 | sdc1(f0, MemOperand(scratch1, 0)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4715 | bind(&done); |
| 4716 | } |
| 4717 | |
| 4718 | |
| 4719 | void MacroAssembler::CompareMapAndBranch(Register obj, |
| 4720 | Register scratch, |
| 4721 | Handle<Map> map, |
| 4722 | Label* early_success, |
| 4723 | Condition cond, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4724 | Label* branch_to) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4725 | lw(scratch, FieldMemOperand(obj, HeapObject::kMapOffset)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4726 | CompareMapAndBranch(scratch, map, early_success, cond, branch_to); |
| 4727 | } |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4728 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4729 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4730 | void MacroAssembler::CompareMapAndBranch(Register obj_map, |
| 4731 | Handle<Map> map, |
| 4732 | Label* early_success, |
| 4733 | Condition cond, |
| 4734 | Label* branch_to) { |
| 4735 | Branch(branch_to, cond, obj_map, Operand(map)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4736 | } |
| 4737 | |
| 4738 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4739 | void MacroAssembler::CheckMap(Register obj, |
| 4740 | Register scratch, |
| 4741 | Handle<Map> map, |
| 4742 | Label* fail, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4743 | SmiCheckType smi_check_type) { |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4744 | if (smi_check_type == DO_SMI_CHECK) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4745 | JumpIfSmi(obj, fail); |
| 4746 | } |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4747 | Label success; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4748 | CompareMapAndBranch(obj, scratch, map, &success, ne, fail); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4749 | bind(&success); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4750 | } |
| 4751 | |
| 4752 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 4753 | void MacroAssembler::DispatchWeakMap(Register obj, Register scratch1, |
| 4754 | Register scratch2, Handle<WeakCell> cell, |
| 4755 | Handle<Code> success, |
| 4756 | SmiCheckType smi_check_type) { |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4757 | Label fail; |
| 4758 | if (smi_check_type == DO_SMI_CHECK) { |
| 4759 | JumpIfSmi(obj, &fail); |
| 4760 | } |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 4761 | lw(scratch1, FieldMemOperand(obj, HeapObject::kMapOffset)); |
| 4762 | GetWeakValue(scratch2, cell); |
| 4763 | Jump(success, RelocInfo::CODE_TARGET, eq, scratch1, Operand(scratch2)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4764 | bind(&fail); |
| 4765 | } |
| 4766 | |
| 4767 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4768 | void MacroAssembler::CheckMap(Register obj, |
| 4769 | Register scratch, |
| 4770 | Heap::RootListIndex index, |
| 4771 | Label* fail, |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4772 | SmiCheckType smi_check_type) { |
| 4773 | if (smi_check_type == DO_SMI_CHECK) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4774 | JumpIfSmi(obj, fail); |
| 4775 | } |
| 4776 | lw(scratch, FieldMemOperand(obj, HeapObject::kMapOffset)); |
| 4777 | LoadRoot(at, index); |
| 4778 | Branch(fail, ne, scratch, Operand(at)); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 4779 | } |
| 4780 | |
| 4781 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 4782 | void MacroAssembler::GetWeakValue(Register value, Handle<WeakCell> cell) { |
| 4783 | li(value, Operand(cell)); |
| 4784 | lw(value, FieldMemOperand(value, WeakCell::kValueOffset)); |
| 4785 | } |
| 4786 | |
| 4787 | |
| 4788 | void MacroAssembler::LoadWeakValue(Register value, Handle<WeakCell> cell, |
| 4789 | Label* miss) { |
| 4790 | GetWeakValue(value, cell); |
| 4791 | JumpIfSmi(value, miss); |
| 4792 | } |
| 4793 | |
| 4794 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4795 | void MacroAssembler::MovFromFloatResult(DoubleRegister dst) { |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4796 | if (IsMipsSoftFloatABI) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4797 | if (kArchEndian == kLittle) { |
| 4798 | Move(dst, v0, v1); |
| 4799 | } else { |
| 4800 | Move(dst, v1, v0); |
| 4801 | } |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4802 | } else { |
| 4803 | Move(dst, f0); // Reg f0 is o32 ABI FP return value. |
| 4804 | } |
| 4805 | } |
| 4806 | |
| 4807 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4808 | void MacroAssembler::MovFromFloatParameter(DoubleRegister dst) { |
| 4809 | if (IsMipsSoftFloatABI) { |
| 4810 | if (kArchEndian == kLittle) { |
| 4811 | Move(dst, a0, a1); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4812 | } else { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4813 | Move(dst, a1, a0); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4814 | } |
| 4815 | } else { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4816 | Move(dst, f12); // Reg f12 is o32 ABI FP first argument value. |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4817 | } |
| 4818 | } |
| 4819 | |
| 4820 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4821 | void MacroAssembler::MovToFloatParameter(DoubleRegister src) { |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4822 | if (!IsMipsSoftFloatABI) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4823 | Move(f12, src); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4824 | } else { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4825 | if (kArchEndian == kLittle) { |
| 4826 | Move(a0, a1, src); |
| 4827 | } else { |
| 4828 | Move(a1, a0, src); |
| 4829 | } |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4830 | } |
| 4831 | } |
| 4832 | |
| 4833 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4834 | void MacroAssembler::MovToFloatResult(DoubleRegister src) { |
| 4835 | if (!IsMipsSoftFloatABI) { |
| 4836 | Move(f0, src); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4837 | } else { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4838 | if (kArchEndian == kLittle) { |
| 4839 | Move(v0, v1, src); |
| 4840 | } else { |
| 4841 | Move(v1, v0, src); |
| 4842 | } |
| 4843 | } |
| 4844 | } |
| 4845 | |
| 4846 | |
| 4847 | void MacroAssembler::MovToFloatParameters(DoubleRegister src1, |
| 4848 | DoubleRegister src2) { |
| 4849 | if (!IsMipsSoftFloatABI) { |
| 4850 | if (src2.is(f12)) { |
| 4851 | DCHECK(!src1.is(f14)); |
| 4852 | Move(f14, src2); |
| 4853 | Move(f12, src1); |
| 4854 | } else { |
| 4855 | Move(f12, src1); |
| 4856 | Move(f14, src2); |
| 4857 | } |
| 4858 | } else { |
| 4859 | if (kArchEndian == kLittle) { |
| 4860 | Move(a0, a1, src1); |
| 4861 | Move(a2, a3, src2); |
| 4862 | } else { |
| 4863 | Move(a1, a0, src1); |
| 4864 | Move(a3, a2, src2); |
| 4865 | } |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4866 | } |
| 4867 | } |
| 4868 | |
| 4869 | |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 4870 | // ----------------------------------------------------------------------------- |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4871 | // JavaScript invokes. |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 4872 | |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 4873 | void MacroAssembler::PrepareForTailCall(const ParameterCount& callee_args_count, |
| 4874 | Register caller_args_count_reg, |
| 4875 | Register scratch0, Register scratch1) { |
| 4876 | #if DEBUG |
| 4877 | if (callee_args_count.is_reg()) { |
| 4878 | DCHECK(!AreAliased(callee_args_count.reg(), caller_args_count_reg, scratch0, |
| 4879 | scratch1)); |
| 4880 | } else { |
| 4881 | DCHECK(!AreAliased(caller_args_count_reg, scratch0, scratch1)); |
| 4882 | } |
| 4883 | #endif |
| 4884 | |
| 4885 | // Calculate the end of destination area where we will put the arguments |
| 4886 | // after we drop current frame. We add kPointerSize to count the receiver |
| 4887 | // argument which is not included into formal parameters count. |
| 4888 | Register dst_reg = scratch0; |
| 4889 | Lsa(dst_reg, fp, caller_args_count_reg, kPointerSizeLog2); |
| 4890 | Addu(dst_reg, dst_reg, |
| 4891 | Operand(StandardFrameConstants::kCallerSPOffset + kPointerSize)); |
| 4892 | |
| 4893 | Register src_reg = caller_args_count_reg; |
| 4894 | // Calculate the end of source area. +kPointerSize is for the receiver. |
| 4895 | if (callee_args_count.is_reg()) { |
| 4896 | Lsa(src_reg, sp, callee_args_count.reg(), kPointerSizeLog2); |
| 4897 | Addu(src_reg, src_reg, Operand(kPointerSize)); |
| 4898 | } else { |
| 4899 | Addu(src_reg, sp, |
| 4900 | Operand((callee_args_count.immediate() + 1) * kPointerSize)); |
| 4901 | } |
| 4902 | |
| 4903 | if (FLAG_debug_code) { |
| 4904 | Check(lo, kStackAccessBelowStackPointer, src_reg, Operand(dst_reg)); |
| 4905 | } |
| 4906 | |
| 4907 | // Restore caller's frame pointer and return address now as they will be |
| 4908 | // overwritten by the copying loop. |
| 4909 | lw(ra, MemOperand(fp, StandardFrameConstants::kCallerPCOffset)); |
| 4910 | lw(fp, MemOperand(fp, StandardFrameConstants::kCallerFPOffset)); |
| 4911 | |
| 4912 | // Now copy callee arguments to the caller frame going backwards to avoid |
| 4913 | // callee arguments corruption (source and destination areas could overlap). |
| 4914 | |
| 4915 | // Both src_reg and dst_reg are pointing to the word after the one to copy, |
| 4916 | // so they must be pre-decremented in the loop. |
| 4917 | Register tmp_reg = scratch1; |
| 4918 | Label loop, entry; |
| 4919 | Branch(&entry); |
| 4920 | bind(&loop); |
| 4921 | Subu(src_reg, src_reg, Operand(kPointerSize)); |
| 4922 | Subu(dst_reg, dst_reg, Operand(kPointerSize)); |
| 4923 | lw(tmp_reg, MemOperand(src_reg)); |
| 4924 | sw(tmp_reg, MemOperand(dst_reg)); |
| 4925 | bind(&entry); |
| 4926 | Branch(&loop, ne, sp, Operand(src_reg)); |
| 4927 | |
| 4928 | // Leave current frame. |
| 4929 | mov(sp, dst_reg); |
| 4930 | } |
| 4931 | |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 4932 | void MacroAssembler::InvokePrologue(const ParameterCount& expected, |
| 4933 | const ParameterCount& actual, |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 4934 | Label* done, |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4935 | bool* definitely_mismatches, |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4936 | InvokeFlag flag, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4937 | const CallWrapper& call_wrapper) { |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 4938 | bool definitely_matches = false; |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4939 | *definitely_mismatches = false; |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 4940 | Label regular_invoke; |
| 4941 | |
| 4942 | // Check whether the expected and actual arguments count match. If not, |
| 4943 | // setup registers according to contract with ArgumentsAdaptorTrampoline: |
| 4944 | // a0: actual arguments count |
| 4945 | // a1: function (passed through to callee) |
| 4946 | // a2: expected arguments count |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 4947 | |
| 4948 | // The code below is made a lot easier because the calling code already sets |
| 4949 | // up actual and expected registers according to the contract if values are |
| 4950 | // passed in registers. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4951 | DCHECK(actual.is_immediate() || actual.reg().is(a0)); |
| 4952 | DCHECK(expected.is_immediate() || expected.reg().is(a2)); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 4953 | |
| 4954 | if (expected.is_immediate()) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4955 | DCHECK(actual.is_immediate()); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4956 | li(a0, Operand(actual.immediate())); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 4957 | if (expected.immediate() == actual.immediate()) { |
| 4958 | definitely_matches = true; |
| 4959 | } else { |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 4960 | const int sentinel = SharedFunctionInfo::kDontAdaptArgumentsSentinel; |
| 4961 | if (expected.immediate() == sentinel) { |
| 4962 | // Don't worry about adapting arguments for builtins that |
| 4963 | // don't want that done. Skip adaption code by making it look |
| 4964 | // like we have a match between expected and actual number of |
| 4965 | // arguments. |
| 4966 | definitely_matches = true; |
| 4967 | } else { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4968 | *definitely_mismatches = true; |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 4969 | li(a2, Operand(expected.immediate())); |
| 4970 | } |
| 4971 | } |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4972 | } else if (actual.is_immediate()) { |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4973 | li(a0, Operand(actual.immediate())); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4974 | Branch(®ular_invoke, eq, expected.reg(), Operand(a0)); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 4975 | } else { |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4976 | Branch(®ular_invoke, eq, expected.reg(), Operand(actual.reg())); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 4977 | } |
| 4978 | |
| 4979 | if (!definitely_matches) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4980 | Handle<Code> adaptor = |
| 4981 | isolate()->builtins()->ArgumentsAdaptorTrampoline(); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 4982 | if (flag == CALL_FUNCTION) { |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 4983 | call_wrapper.BeforeCall(CallSize(adaptor)); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 4984 | Call(adaptor); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4985 | call_wrapper.AfterCall(); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4986 | if (!*definitely_mismatches) { |
| 4987 | Branch(done); |
| 4988 | } |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 4989 | } else { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4990 | Jump(adaptor, RelocInfo::CODE_TARGET); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 4991 | } |
| 4992 | bind(®ular_invoke); |
| 4993 | } |
| 4994 | } |
| 4995 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4996 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4997 | void MacroAssembler::FloodFunctionIfStepping(Register fun, Register new_target, |
| 4998 | const ParameterCount& expected, |
| 4999 | const ParameterCount& actual) { |
| 5000 | Label skip_flooding; |
| 5001 | ExternalReference step_in_enabled = |
| 5002 | ExternalReference::debug_step_in_enabled_address(isolate()); |
| 5003 | li(t0, Operand(step_in_enabled)); |
| 5004 | lb(t0, MemOperand(t0)); |
| 5005 | Branch(&skip_flooding, eq, t0, Operand(zero_reg)); |
| 5006 | { |
| 5007 | FrameScope frame(this, |
| 5008 | has_frame() ? StackFrame::NONE : StackFrame::INTERNAL); |
| 5009 | if (expected.is_reg()) { |
| 5010 | SmiTag(expected.reg()); |
| 5011 | Push(expected.reg()); |
| 5012 | } |
| 5013 | if (actual.is_reg()) { |
| 5014 | SmiTag(actual.reg()); |
| 5015 | Push(actual.reg()); |
| 5016 | } |
| 5017 | if (new_target.is_valid()) { |
| 5018 | Push(new_target); |
| 5019 | } |
| 5020 | Push(fun); |
| 5021 | Push(fun); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 5022 | CallRuntime(Runtime::kDebugPrepareStepInIfStepping); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 5023 | Pop(fun); |
| 5024 | if (new_target.is_valid()) { |
| 5025 | Pop(new_target); |
| 5026 | } |
| 5027 | if (actual.is_reg()) { |
| 5028 | Pop(actual.reg()); |
| 5029 | SmiUntag(actual.reg()); |
| 5030 | } |
| 5031 | if (expected.is_reg()) { |
| 5032 | Pop(expected.reg()); |
| 5033 | SmiUntag(expected.reg()); |
| 5034 | } |
| 5035 | } |
| 5036 | bind(&skip_flooding); |
| 5037 | } |
| 5038 | |
| 5039 | |
| 5040 | void MacroAssembler::InvokeFunctionCode(Register function, Register new_target, |
| 5041 | const ParameterCount& expected, |
| 5042 | const ParameterCount& actual, |
| 5043 | InvokeFlag flag, |
| 5044 | const CallWrapper& call_wrapper) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5045 | // You can't call a function without a valid frame. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5046 | DCHECK(flag == JUMP_FUNCTION || has_frame()); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 5047 | DCHECK(function.is(a1)); |
| 5048 | DCHECK_IMPLIES(new_target.is_valid(), new_target.is(a3)); |
| 5049 | |
| 5050 | if (call_wrapper.NeedsDebugStepCheck()) { |
| 5051 | FloodFunctionIfStepping(function, new_target, expected, actual); |
| 5052 | } |
| 5053 | |
| 5054 | // Clear the new.target register if not given. |
| 5055 | if (!new_target.is_valid()) { |
| 5056 | LoadRoot(a3, Heap::kUndefinedValueRootIndex); |
| 5057 | } |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5058 | |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 5059 | Label done; |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5060 | bool definitely_mismatches = false; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 5061 | InvokePrologue(expected, actual, &done, &definitely_mismatches, flag, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5062 | call_wrapper); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5063 | if (!definitely_mismatches) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 5064 | // We call indirectly through the code field in the function to |
| 5065 | // allow recompilation to take effect without changing any of the |
| 5066 | // call sites. |
| 5067 | Register code = t0; |
| 5068 | lw(code, FieldMemOperand(function, JSFunction::kCodeEntryOffset)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5069 | if (flag == CALL_FUNCTION) { |
| 5070 | call_wrapper.BeforeCall(CallSize(code)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5071 | Call(code); |
| 5072 | call_wrapper.AfterCall(); |
| 5073 | } else { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5074 | DCHECK(flag == JUMP_FUNCTION); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5075 | Jump(code); |
| 5076 | } |
| 5077 | // Continue here if InvokePrologue does handle the invocation due to |
| 5078 | // mismatched parameter counts. |
| 5079 | bind(&done); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 5080 | } |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 5081 | } |
| 5082 | |
| 5083 | |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 5084 | void MacroAssembler::InvokeFunction(Register function, |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 5085 | Register new_target, |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 5086 | const ParameterCount& actual, |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5087 | InvokeFlag flag, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5088 | const CallWrapper& call_wrapper) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5089 | // You can't call a function without a valid frame. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5090 | DCHECK(flag == JUMP_FUNCTION || has_frame()); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5091 | |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 5092 | // Contract with called JS functions requires that function is passed in a1. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5093 | DCHECK(function.is(a1)); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 5094 | Register expected_reg = a2; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 5095 | Register temp_reg = t0; |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 5096 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 5097 | lw(temp_reg, FieldMemOperand(a1, JSFunction::kSharedFunctionInfoOffset)); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 5098 | lw(cp, FieldMemOperand(a1, JSFunction::kContextOffset)); |
| 5099 | lw(expected_reg, |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 5100 | FieldMemOperand(temp_reg, |
| 5101 | SharedFunctionInfo::kFormalParameterCountOffset)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5102 | sra(expected_reg, expected_reg, kSmiTagSize); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 5103 | |
| 5104 | ParameterCount expected(expected_reg); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 5105 | InvokeFunctionCode(function, new_target, expected, actual, flag, |
| 5106 | call_wrapper); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5107 | } |
| 5108 | |
| 5109 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5110 | void MacroAssembler::InvokeFunction(Register function, |
| 5111 | const ParameterCount& expected, |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5112 | const ParameterCount& actual, |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 5113 | InvokeFlag flag, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5114 | const CallWrapper& call_wrapper) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5115 | // You can't call a function without a valid frame. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5116 | DCHECK(flag == JUMP_FUNCTION || has_frame()); |
| 5117 | |
| 5118 | // Contract with called JS functions requires that function is passed in a1. |
| 5119 | DCHECK(function.is(a1)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5120 | |
| 5121 | // Get the function and setup the context. |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5122 | lw(cp, FieldMemOperand(a1, JSFunction::kContextOffset)); |
| 5123 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 5124 | InvokeFunctionCode(a1, no_reg, expected, actual, flag, call_wrapper); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5125 | } |
| 5126 | |
| 5127 | |
| 5128 | void MacroAssembler::InvokeFunction(Handle<JSFunction> function, |
| 5129 | const ParameterCount& expected, |
| 5130 | const ParameterCount& actual, |
| 5131 | InvokeFlag flag, |
| 5132 | const CallWrapper& call_wrapper) { |
| 5133 | li(a1, function); |
| 5134 | InvokeFunction(a1, expected, actual, flag, call_wrapper); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5135 | } |
| 5136 | |
| 5137 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5138 | void MacroAssembler::IsObjectJSStringType(Register object, |
| 5139 | Register scratch, |
| 5140 | Label* fail) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5141 | DCHECK(kNotStringTag != 0); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5142 | |
| 5143 | lw(scratch, FieldMemOperand(object, HeapObject::kMapOffset)); |
| 5144 | lbu(scratch, FieldMemOperand(scratch, Map::kInstanceTypeOffset)); |
| 5145 | And(scratch, scratch, Operand(kIsNotStringMask)); |
| 5146 | Branch(fail, ne, scratch, Operand(zero_reg)); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 5147 | } |
| 5148 | |
| 5149 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5150 | void MacroAssembler::IsObjectNameType(Register object, |
| 5151 | Register scratch, |
| 5152 | Label* fail) { |
| 5153 | lw(scratch, FieldMemOperand(object, HeapObject::kMapOffset)); |
| 5154 | lbu(scratch, FieldMemOperand(scratch, Map::kInstanceTypeOffset)); |
| 5155 | Branch(fail, hi, scratch, Operand(LAST_NAME_TYPE)); |
| 5156 | } |
| 5157 | |
| 5158 | |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 5159 | // --------------------------------------------------------------------------- |
| 5160 | // Support functions. |
| 5161 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5162 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 5163 | void MacroAssembler::GetMapConstructor(Register result, Register map, |
| 5164 | Register temp, Register temp2) { |
| 5165 | Label done, loop; |
| 5166 | lw(result, FieldMemOperand(map, Map::kConstructorOrBackPointerOffset)); |
| 5167 | bind(&loop); |
| 5168 | JumpIfSmi(result, &done); |
| 5169 | GetObjectType(result, temp, temp2); |
| 5170 | Branch(&done, ne, temp2, Operand(MAP_TYPE)); |
| 5171 | lw(result, FieldMemOperand(result, Map::kConstructorOrBackPointerOffset)); |
| 5172 | Branch(&loop); |
| 5173 | bind(&done); |
| 5174 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5175 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5176 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 5177 | void MacroAssembler::TryGetFunctionPrototype(Register function, Register result, |
| 5178 | Register scratch, Label* miss) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5179 | // Get the prototype or initial map from the function. |
| 5180 | lw(result, |
| 5181 | FieldMemOperand(function, JSFunction::kPrototypeOrInitialMapOffset)); |
| 5182 | |
| 5183 | // If the prototype or initial map is the hole, don't return it and |
| 5184 | // simply miss the cache instead. This will allow us to allocate a |
| 5185 | // prototype object on-demand in the runtime system. |
| 5186 | LoadRoot(t8, Heap::kTheHoleValueRootIndex); |
| 5187 | Branch(miss, eq, result, Operand(t8)); |
| 5188 | |
| 5189 | // If the function does not have an initial map, we're done. |
| 5190 | Label done; |
| 5191 | GetObjectType(result, scratch, scratch); |
| 5192 | Branch(&done, ne, scratch, Operand(MAP_TYPE)); |
| 5193 | |
| 5194 | // Get the prototype from the initial map. |
| 5195 | lw(result, FieldMemOperand(result, Map::kPrototypeOffset)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5196 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5197 | // All done. |
| 5198 | bind(&done); |
| 5199 | } |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 5200 | |
| 5201 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5202 | void MacroAssembler::GetObjectType(Register object, |
| 5203 | Register map, |
| 5204 | Register type_reg) { |
| 5205 | lw(map, FieldMemOperand(object, HeapObject::kMapOffset)); |
| 5206 | lbu(type_reg, FieldMemOperand(map, Map::kInstanceTypeOffset)); |
| 5207 | } |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 5208 | |
| 5209 | |
| 5210 | // ----------------------------------------------------------------------------- |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 5211 | // Runtime calls. |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 5212 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5213 | void MacroAssembler::CallStub(CodeStub* stub, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5214 | TypeFeedbackId ast_id, |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5215 | Condition cond, |
| 5216 | Register r1, |
| 5217 | const Operand& r2, |
| 5218 | BranchDelaySlot bd) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5219 | DCHECK(AllowThisStubCall(stub)); // Stub calls are not allowed in some stubs. |
| 5220 | Call(stub->GetCode(), RelocInfo::CODE_TARGET, ast_id, |
| 5221 | cond, r1, r2, bd); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 5222 | } |
| 5223 | |
| 5224 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5225 | void MacroAssembler::TailCallStub(CodeStub* stub, |
| 5226 | Condition cond, |
| 5227 | Register r1, |
| 5228 | const Operand& r2, |
| 5229 | BranchDelaySlot bd) { |
| 5230 | Jump(stub->GetCode(), RelocInfo::CODE_TARGET, cond, r1, r2, bd); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 5231 | } |
| 5232 | |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 5233 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5234 | bool MacroAssembler::AllowThisStubCall(CodeStub* stub) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5235 | return has_frame_ || !stub->SometimesSetsUpAFrame(); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 5236 | } |
| 5237 | |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 5238 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5239 | void MacroAssembler::IndexFromHash(Register hash, Register index) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5240 | // If the hash field contains an array index pick it out. The assert checks |
| 5241 | // that the constants for the maximum number of digits for an array index |
| 5242 | // cached in the hash field and the number of bits reserved for it does not |
| 5243 | // conflict. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5244 | DCHECK(TenToThe(String::kMaxCachedArrayIndexLength) < |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5245 | (1 << String::kArrayIndexValueBits)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5246 | DecodeFieldToSmi<String::ArrayIndexValueBits>(index, hash); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5247 | } |
| 5248 | |
| 5249 | |
| 5250 | void MacroAssembler::ObjectToDoubleFPURegister(Register object, |
| 5251 | FPURegister result, |
| 5252 | Register scratch1, |
| 5253 | Register scratch2, |
| 5254 | Register heap_number_map, |
| 5255 | Label* not_number, |
| 5256 | ObjectToDoubleFlags flags) { |
| 5257 | Label done; |
| 5258 | if ((flags & OBJECT_NOT_SMI) == 0) { |
| 5259 | Label not_smi; |
| 5260 | JumpIfNotSmi(object, ¬_smi); |
| 5261 | // Remove smi tag and convert to double. |
| 5262 | sra(scratch1, object, kSmiTagSize); |
| 5263 | mtc1(scratch1, result); |
| 5264 | cvt_d_w(result, result); |
| 5265 | Branch(&done); |
| 5266 | bind(¬_smi); |
| 5267 | } |
| 5268 | // Check for heap number and load double value from it. |
| 5269 | lw(scratch1, FieldMemOperand(object, HeapObject::kMapOffset)); |
| 5270 | Branch(not_number, ne, scratch1, Operand(heap_number_map)); |
| 5271 | |
| 5272 | if ((flags & AVOID_NANS_AND_INFINITIES) != 0) { |
| 5273 | // If exponent is all ones the number is either a NaN or +/-Infinity. |
| 5274 | Register exponent = scratch1; |
| 5275 | Register mask_reg = scratch2; |
| 5276 | lw(exponent, FieldMemOperand(object, HeapNumber::kExponentOffset)); |
| 5277 | li(mask_reg, HeapNumber::kExponentMask); |
| 5278 | |
| 5279 | And(exponent, exponent, mask_reg); |
| 5280 | Branch(not_number, eq, exponent, Operand(mask_reg)); |
| 5281 | } |
| 5282 | ldc1(result, FieldMemOperand(object, HeapNumber::kValueOffset)); |
| 5283 | bind(&done); |
| 5284 | } |
| 5285 | |
| 5286 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5287 | void MacroAssembler::SmiToDoubleFPURegister(Register smi, |
| 5288 | FPURegister value, |
| 5289 | Register scratch1) { |
| 5290 | sra(scratch1, smi, kSmiTagSize); |
| 5291 | mtc1(scratch1, value); |
| 5292 | cvt_d_w(value, value); |
| 5293 | } |
| 5294 | |
| 5295 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 5296 | static inline void BranchOvfHelper(MacroAssembler* masm, Register overflow_dst, |
| 5297 | Label* overflow_label, |
| 5298 | Label* no_overflow_label) { |
| 5299 | DCHECK(overflow_label || no_overflow_label); |
| 5300 | if (!overflow_label) { |
| 5301 | DCHECK(no_overflow_label); |
| 5302 | masm->Branch(no_overflow_label, ge, overflow_dst, Operand(zero_reg)); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 5303 | } else { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 5304 | masm->Branch(overflow_label, lt, overflow_dst, Operand(zero_reg)); |
| 5305 | if (no_overflow_label) masm->Branch(no_overflow_label); |
| 5306 | } |
| 5307 | } |
| 5308 | |
| 5309 | |
| 5310 | void MacroAssembler::AddBranchOvf(Register dst, Register left, |
| 5311 | const Operand& right, Label* overflow_label, |
| 5312 | Label* no_overflow_label, Register scratch) { |
| 5313 | if (right.is_reg()) { |
| 5314 | AddBranchOvf(dst, left, right.rm(), overflow_label, no_overflow_label, |
| 5315 | scratch); |
| 5316 | } else { |
| 5317 | if (IsMipsArchVariant(kMips32r6)) { |
| 5318 | Register right_reg = t9; |
| 5319 | DCHECK(!left.is(right_reg)); |
| 5320 | li(right_reg, Operand(right)); |
| 5321 | AddBranchOvf(dst, left, right_reg, overflow_label, no_overflow_label); |
| 5322 | } else { |
| 5323 | Register overflow_dst = t9; |
| 5324 | DCHECK(!dst.is(scratch)); |
| 5325 | DCHECK(!dst.is(overflow_dst)); |
| 5326 | DCHECK(!scratch.is(overflow_dst)); |
| 5327 | DCHECK(!left.is(overflow_dst)); |
| 5328 | if (dst.is(left)) { |
| 5329 | mov(scratch, left); // Preserve left. |
| 5330 | Addu(dst, left, right.immediate()); // Left is overwritten. |
| 5331 | xor_(scratch, dst, scratch); // Original left. |
| 5332 | // Load right since xori takes uint16 as immediate. |
| 5333 | Addu(overflow_dst, zero_reg, right); |
| 5334 | xor_(overflow_dst, dst, overflow_dst); |
| 5335 | and_(overflow_dst, overflow_dst, scratch); |
| 5336 | } else { |
| 5337 | Addu(dst, left, right.immediate()); |
| 5338 | xor_(overflow_dst, dst, left); |
| 5339 | // Load right since xori takes uint16 as immediate. |
| 5340 | Addu(scratch, zero_reg, right); |
| 5341 | xor_(scratch, dst, scratch); |
| 5342 | and_(overflow_dst, scratch, overflow_dst); |
| 5343 | } |
| 5344 | BranchOvfHelper(this, overflow_dst, overflow_label, no_overflow_label); |
| 5345 | } |
| 5346 | } |
| 5347 | } |
| 5348 | |
| 5349 | |
| 5350 | void MacroAssembler::AddBranchOvf(Register dst, Register left, Register right, |
| 5351 | Label* overflow_label, |
| 5352 | Label* no_overflow_label, Register scratch) { |
| 5353 | if (IsMipsArchVariant(kMips32r6)) { |
| 5354 | if (!overflow_label) { |
| 5355 | DCHECK(no_overflow_label); |
| 5356 | DCHECK(!dst.is(scratch)); |
| 5357 | Register left_reg = left.is(dst) ? scratch : left; |
| 5358 | Register right_reg = right.is(dst) ? t9 : right; |
| 5359 | DCHECK(!dst.is(left_reg)); |
| 5360 | DCHECK(!dst.is(right_reg)); |
| 5361 | Move(left_reg, left); |
| 5362 | Move(right_reg, right); |
| 5363 | addu(dst, left, right); |
| 5364 | bnvc(left_reg, right_reg, no_overflow_label); |
| 5365 | } else { |
| 5366 | bovc(left, right, overflow_label); |
| 5367 | addu(dst, left, right); |
| 5368 | if (no_overflow_label) bc(no_overflow_label); |
| 5369 | } |
| 5370 | } else { |
| 5371 | Register overflow_dst = t9; |
| 5372 | DCHECK(!dst.is(scratch)); |
| 5373 | DCHECK(!dst.is(overflow_dst)); |
| 5374 | DCHECK(!scratch.is(overflow_dst)); |
| 5375 | DCHECK(!left.is(overflow_dst)); |
| 5376 | DCHECK(!right.is(overflow_dst)); |
| 5377 | DCHECK(!left.is(scratch)); |
| 5378 | DCHECK(!right.is(scratch)); |
| 5379 | |
| 5380 | if (left.is(right) && dst.is(left)) { |
| 5381 | mov(overflow_dst, right); |
| 5382 | right = overflow_dst; |
| 5383 | } |
| 5384 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 5385 | if (dst.is(left)) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 5386 | mov(scratch, left); // Preserve left. |
| 5387 | addu(dst, left, right); // Left is overwritten. |
| 5388 | xor_(scratch, dst, scratch); // Original left. |
| 5389 | xor_(overflow_dst, dst, right); |
| 5390 | and_(overflow_dst, overflow_dst, scratch); |
| 5391 | } else if (dst.is(right)) { |
| 5392 | mov(scratch, right); // Preserve right. |
| 5393 | addu(dst, left, right); // Right is overwritten. |
| 5394 | xor_(scratch, dst, scratch); // Original right. |
| 5395 | xor_(overflow_dst, dst, left); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 5396 | and_(overflow_dst, overflow_dst, scratch); |
| 5397 | } else { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 5398 | addu(dst, left, right); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 5399 | xor_(overflow_dst, dst, left); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 5400 | xor_(scratch, dst, right); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 5401 | and_(overflow_dst, scratch, overflow_dst); |
| 5402 | } |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 5403 | BranchOvfHelper(this, overflow_dst, overflow_label, no_overflow_label); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 5404 | } |
| 5405 | } |
| 5406 | |
| 5407 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 5408 | void MacroAssembler::SubBranchOvf(Register dst, Register left, |
| 5409 | const Operand& right, Label* overflow_label, |
| 5410 | Label* no_overflow_label, Register scratch) { |
| 5411 | DCHECK(overflow_label || no_overflow_label); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 5412 | if (right.is_reg()) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 5413 | SubBranchOvf(dst, left, right.rm(), overflow_label, no_overflow_label, |
| 5414 | scratch); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 5415 | } else { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 5416 | Register overflow_dst = t9; |
| 5417 | DCHECK(!dst.is(scratch)); |
| 5418 | DCHECK(!dst.is(overflow_dst)); |
| 5419 | DCHECK(!scratch.is(overflow_dst)); |
| 5420 | DCHECK(!left.is(overflow_dst)); |
| 5421 | DCHECK(!left.is(scratch)); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 5422 | if (dst.is(left)) { |
| 5423 | mov(scratch, left); // Preserve left. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 5424 | Subu(dst, left, right.immediate()); // Left is overwritten. |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 5425 | // Load right since xori takes uint16 as immediate. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 5426 | Addu(overflow_dst, zero_reg, right); |
| 5427 | xor_(overflow_dst, scratch, overflow_dst); // scratch is original left. |
| 5428 | xor_(scratch, dst, scratch); // scratch is original left. |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 5429 | and_(overflow_dst, scratch, overflow_dst); |
| 5430 | } else { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 5431 | Subu(dst, left, right); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 5432 | xor_(overflow_dst, dst, left); |
| 5433 | // Load right since xori takes uint16 as immediate. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 5434 | Addu(scratch, zero_reg, right); |
| 5435 | xor_(scratch, left, scratch); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 5436 | and_(overflow_dst, scratch, overflow_dst); |
| 5437 | } |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 5438 | BranchOvfHelper(this, overflow_dst, overflow_label, no_overflow_label); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 5439 | } |
| 5440 | } |
| 5441 | |
| 5442 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 5443 | void MacroAssembler::SubBranchOvf(Register dst, Register left, Register right, |
| 5444 | Label* overflow_label, |
| 5445 | Label* no_overflow_label, Register scratch) { |
| 5446 | DCHECK(overflow_label || no_overflow_label); |
| 5447 | Register overflow_dst = t9; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5448 | DCHECK(!dst.is(scratch)); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 5449 | DCHECK(!dst.is(overflow_dst)); |
| 5450 | DCHECK(!scratch.is(overflow_dst)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5451 | DCHECK(!overflow_dst.is(left)); |
| 5452 | DCHECK(!overflow_dst.is(right)); |
| 5453 | DCHECK(!scratch.is(left)); |
| 5454 | DCHECK(!scratch.is(right)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 5455 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5456 | // This happens with some crankshaft code. Since Subu works fine if |
| 5457 | // left == right, let's not make that restriction here. |
| 5458 | if (left.is(right)) { |
| 5459 | mov(dst, zero_reg); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 5460 | if (no_overflow_label) { |
| 5461 | Branch(no_overflow_label); |
| 5462 | } |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5463 | } |
| 5464 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 5465 | if (dst.is(left)) { |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 5466 | mov(scratch, left); // Preserve left. |
| 5467 | subu(dst, left, right); // Left is overwritten. |
| 5468 | xor_(overflow_dst, dst, scratch); // scratch is original left. |
| 5469 | xor_(scratch, scratch, right); // scratch is original left. |
| 5470 | and_(overflow_dst, scratch, overflow_dst); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 5471 | } else if (dst.is(right)) { |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 5472 | mov(scratch, right); // Preserve right. |
| 5473 | subu(dst, left, right); // Right is overwritten. |
| 5474 | xor_(overflow_dst, dst, left); |
| 5475 | xor_(scratch, left, scratch); // Original right. |
| 5476 | and_(overflow_dst, scratch, overflow_dst); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 5477 | } else { |
| 5478 | subu(dst, left, right); |
| 5479 | xor_(overflow_dst, dst, left); |
| 5480 | xor_(scratch, left, right); |
| 5481 | and_(overflow_dst, scratch, overflow_dst); |
| 5482 | } |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 5483 | BranchOvfHelper(this, overflow_dst, overflow_label, no_overflow_label); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 5484 | } |
| 5485 | |
| 5486 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 5487 | void MacroAssembler::CallRuntime(const Runtime::Function* f, int num_arguments, |
| 5488 | SaveFPRegsMode save_doubles, |
| 5489 | BranchDelaySlot bd) { |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 5490 | // All parameters are on the stack. v0 has the return value after call. |
| 5491 | |
| 5492 | // If the expected number of arguments of the runtime function is |
| 5493 | // constant, we check that the actual number of arguments match the |
| 5494 | // expectation. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5495 | CHECK(f->nargs < 0 || f->nargs == num_arguments); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 5496 | |
| 5497 | // TODO(1236192): Most runtime routines don't need the number of |
| 5498 | // arguments passed in because it is constant. At some point we |
| 5499 | // should remove this need and make the runtime routine entry code |
| 5500 | // smarter. |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5501 | PrepareCEntryArgs(num_arguments); |
| 5502 | PrepareCEntryFunction(ExternalReference(f, isolate())); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5503 | CEntryStub stub(isolate(), 1, save_doubles); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 5504 | CallStub(&stub, TypeFeedbackId::None(), al, zero_reg, Operand(zero_reg), bd); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 5505 | } |
| 5506 | |
| 5507 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5508 | void MacroAssembler::CallExternalReference(const ExternalReference& ext, |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5509 | int num_arguments, |
| 5510 | BranchDelaySlot bd) { |
| 5511 | PrepareCEntryArgs(num_arguments); |
| 5512 | PrepareCEntryFunction(ext); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5513 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5514 | CEntryStub stub(isolate(), 1); |
| 5515 | CallStub(&stub, TypeFeedbackId::None(), al, zero_reg, Operand(zero_reg), bd); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5516 | } |
| 5517 | |
| 5518 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 5519 | void MacroAssembler::TailCallRuntime(Runtime::FunctionId fid) { |
| 5520 | const Runtime::Function* function = Runtime::FunctionForId(fid); |
| 5521 | DCHECK_EQ(1, function->result_size); |
| 5522 | if (function->nargs >= 0) { |
| 5523 | PrepareCEntryArgs(function->nargs); |
| 5524 | } |
| 5525 | JumpToExternalReference(ExternalReference(fid, isolate())); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 5526 | } |
| 5527 | |
| 5528 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5529 | void MacroAssembler::JumpToExternalReference(const ExternalReference& builtin, |
| 5530 | BranchDelaySlot bd) { |
| 5531 | PrepareCEntryFunction(builtin); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5532 | CEntryStub stub(isolate(), 1); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5533 | Jump(stub.GetCode(), |
| 5534 | RelocInfo::CODE_TARGET, |
| 5535 | al, |
| 5536 | zero_reg, |
| 5537 | Operand(zero_reg), |
| 5538 | bd); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 5539 | } |
| 5540 | |
| 5541 | |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 5542 | void MacroAssembler::SetCounter(StatsCounter* counter, int value, |
| 5543 | Register scratch1, Register scratch2) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5544 | if (FLAG_native_code_counters && counter->Enabled()) { |
| 5545 | li(scratch1, Operand(value)); |
| 5546 | li(scratch2, Operand(ExternalReference(counter))); |
| 5547 | sw(scratch1, MemOperand(scratch2)); |
| 5548 | } |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 5549 | } |
| 5550 | |
| 5551 | |
| 5552 | void MacroAssembler::IncrementCounter(StatsCounter* counter, int value, |
| 5553 | Register scratch1, Register scratch2) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5554 | DCHECK(value > 0); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5555 | if (FLAG_native_code_counters && counter->Enabled()) { |
| 5556 | li(scratch2, Operand(ExternalReference(counter))); |
| 5557 | lw(scratch1, MemOperand(scratch2)); |
| 5558 | Addu(scratch1, scratch1, Operand(value)); |
| 5559 | sw(scratch1, MemOperand(scratch2)); |
| 5560 | } |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 5561 | } |
| 5562 | |
| 5563 | |
| 5564 | void MacroAssembler::DecrementCounter(StatsCounter* counter, int value, |
| 5565 | Register scratch1, Register scratch2) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5566 | DCHECK(value > 0); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5567 | if (FLAG_native_code_counters && counter->Enabled()) { |
| 5568 | li(scratch2, Operand(ExternalReference(counter))); |
| 5569 | lw(scratch1, MemOperand(scratch2)); |
| 5570 | Subu(scratch1, scratch1, Operand(value)); |
| 5571 | sw(scratch1, MemOperand(scratch2)); |
| 5572 | } |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 5573 | } |
| 5574 | |
| 5575 | |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 5576 | // ----------------------------------------------------------------------------- |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 5577 | // Debugging. |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 5578 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5579 | void MacroAssembler::Assert(Condition cc, BailoutReason reason, |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 5580 | Register rs, Operand rt) { |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 5581 | if (emit_debug_code()) |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5582 | Check(cc, reason, rs, rt); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5583 | } |
| 5584 | |
| 5585 | |
| 5586 | void MacroAssembler::AssertFastElements(Register elements) { |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 5587 | if (emit_debug_code()) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5588 | DCHECK(!elements.is(at)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5589 | Label ok; |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 5590 | push(elements); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5591 | lw(elements, FieldMemOperand(elements, HeapObject::kMapOffset)); |
| 5592 | LoadRoot(at, Heap::kFixedArrayMapRootIndex); |
| 5593 | Branch(&ok, eq, elements, Operand(at)); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 5594 | LoadRoot(at, Heap::kFixedDoubleArrayMapRootIndex); |
| 5595 | Branch(&ok, eq, elements, Operand(at)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5596 | LoadRoot(at, Heap::kFixedCOWArrayMapRootIndex); |
| 5597 | Branch(&ok, eq, elements, Operand(at)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5598 | Abort(kJSObjectWithFastElementsMapHasSlowElements); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5599 | bind(&ok); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 5600 | pop(elements); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5601 | } |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 5602 | } |
| 5603 | |
| 5604 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5605 | void MacroAssembler::Check(Condition cc, BailoutReason reason, |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 5606 | Register rs, Operand rt) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5607 | Label L; |
| 5608 | Branch(&L, cc, rs, rt); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5609 | Abort(reason); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 5610 | // Will not return here. |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5611 | bind(&L); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 5612 | } |
| 5613 | |
| 5614 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5615 | void MacroAssembler::Abort(BailoutReason reason) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5616 | Label abort_start; |
| 5617 | bind(&abort_start); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5618 | #ifdef DEBUG |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5619 | const char* msg = GetBailoutReason(reason); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5620 | if (msg != NULL) { |
| 5621 | RecordComment("Abort message: "); |
| 5622 | RecordComment(msg); |
| 5623 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5624 | |
| 5625 | if (FLAG_trap_on_abort) { |
| 5626 | stop(msg); |
| 5627 | return; |
| 5628 | } |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5629 | #endif |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5630 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5631 | li(a0, Operand(Smi::FromInt(reason))); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 5632 | push(a0); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5633 | // Disable stub call restrictions to always allow calls to abort. |
| 5634 | if (!has_frame_) { |
| 5635 | // We don't actually want to generate a pile of code for this, so just |
| 5636 | // claim there is a stack frame, without generating one. |
| 5637 | FrameScope scope(this, StackFrame::NONE); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 5638 | CallRuntime(Runtime::kAbort); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5639 | } else { |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 5640 | CallRuntime(Runtime::kAbort); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5641 | } |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 5642 | // Will not return here. |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5643 | if (is_trampoline_pool_blocked()) { |
| 5644 | // If the calling code cares about the exact number of |
| 5645 | // instructions generated, we insert padding here to keep the size |
| 5646 | // of the Abort macro constant. |
| 5647 | // Currently in debug mode with debug_code enabled the number of |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5648 | // generated instructions is 10, so we use this as a maximum value. |
| 5649 | static const int kExpectedAbortInstructions = 10; |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5650 | int abort_instructions = InstructionsGeneratedSince(&abort_start); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5651 | DCHECK(abort_instructions <= kExpectedAbortInstructions); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5652 | while (abort_instructions++ < kExpectedAbortInstructions) { |
| 5653 | nop(); |
| 5654 | } |
| 5655 | } |
| 5656 | } |
| 5657 | |
| 5658 | |
| 5659 | void MacroAssembler::LoadContext(Register dst, int context_chain_length) { |
| 5660 | if (context_chain_length > 0) { |
| 5661 | // Move up the chain of contexts to the context containing the slot. |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 5662 | lw(dst, MemOperand(cp, Context::SlotOffset(Context::PREVIOUS_INDEX))); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5663 | for (int i = 1; i < context_chain_length; i++) { |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 5664 | lw(dst, MemOperand(dst, Context::SlotOffset(Context::PREVIOUS_INDEX))); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5665 | } |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 5666 | } else { |
| 5667 | // Slot is in the current function context. Move it into the |
| 5668 | // destination register in case we store into it (the write barrier |
| 5669 | // cannot be allowed to destroy the context in esi). |
| 5670 | Move(dst, cp); |
| 5671 | } |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5672 | } |
| 5673 | |
| 5674 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5675 | void MacroAssembler::LoadTransitionedArrayMapConditional( |
| 5676 | ElementsKind expected_kind, |
| 5677 | ElementsKind transitioned_kind, |
| 5678 | Register map_in_out, |
| 5679 | Register scratch, |
| 5680 | Label* no_map_match) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 5681 | DCHECK(IsFastElementsKind(expected_kind)); |
| 5682 | DCHECK(IsFastElementsKind(transitioned_kind)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5683 | |
| 5684 | // 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] | 5685 | lw(scratch, NativeContextMemOperand()); |
| 5686 | lw(at, ContextMemOperand(scratch, Context::ArrayMapIndex(expected_kind))); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5687 | Branch(no_map_match, ne, map_in_out, Operand(at)); |
| 5688 | |
| 5689 | // Use the transitioned cached map. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 5690 | lw(map_in_out, |
| 5691 | ContextMemOperand(scratch, Context::ArrayMapIndex(transitioned_kind))); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5692 | } |
| 5693 | |
| 5694 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 5695 | void MacroAssembler::LoadNativeContextSlot(int index, Register dst) { |
| 5696 | lw(dst, NativeContextMemOperand()); |
| 5697 | lw(dst, ContextMemOperand(dst, index)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5698 | } |
| 5699 | |
| 5700 | |
| 5701 | void MacroAssembler::LoadGlobalFunctionInitialMap(Register function, |
| 5702 | Register map, |
| 5703 | Register scratch) { |
| 5704 | // Load the initial map. The global functions all have initial maps. |
| 5705 | lw(map, FieldMemOperand(function, JSFunction::kPrototypeOrInitialMapOffset)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 5706 | if (emit_debug_code()) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5707 | Label ok, fail; |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 5708 | CheckMap(map, scratch, Heap::kMetaMapRootIndex, &fail, DO_SMI_CHECK); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5709 | Branch(&ok); |
| 5710 | bind(&fail); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5711 | Abort(kGlobalFunctionsMustHaveInitialMap); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5712 | bind(&ok); |
| 5713 | } |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 5714 | } |
| 5715 | |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 5716 | void MacroAssembler::StubPrologue(StackFrame::Type type) { |
| 5717 | li(at, Operand(Smi::FromInt(type))); |
| 5718 | PushCommonFrame(at); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5719 | } |
| 5720 | |
| 5721 | |
| 5722 | void MacroAssembler::Prologue(bool code_pre_aging) { |
| 5723 | PredictableCodeSizeScope predictible_code_size_scope( |
| 5724 | this, kNoCodeAgeSequenceLength); |
| 5725 | // The following three instructions must remain together and unmodified |
| 5726 | // for code aging to work properly. |
| 5727 | if (code_pre_aging) { |
| 5728 | // Pre-age the code. |
| 5729 | Code* stub = Code::GetPreAgedCodeAgeStub(isolate()); |
| 5730 | nop(Assembler::CODE_AGE_MARKER_NOP); |
| 5731 | // Load the stub address to t9 and call it, |
| 5732 | // GetCodeAgeAndParity() extracts the stub address from this instruction. |
| 5733 | li(t9, |
| 5734 | Operand(reinterpret_cast<uint32_t>(stub->instruction_start())), |
| 5735 | CONSTANT_SIZE); |
| 5736 | nop(); // Prevent jalr to jal optimization. |
| 5737 | jalr(t9, a0); |
| 5738 | nop(); // Branch delay slot nop. |
| 5739 | nop(); // Pad the empty space. |
| 5740 | } else { |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 5741 | PushStandardFrame(a1); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5742 | nop(Assembler::CODE_AGE_SEQUENCE_NOP); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5743 | } |
| 5744 | } |
| 5745 | |
| 5746 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 5747 | void MacroAssembler::EmitLoadTypeFeedbackVector(Register vector) { |
| 5748 | lw(vector, MemOperand(fp, JavaScriptFrameConstants::kFunctionOffset)); |
| 5749 | lw(vector, FieldMemOperand(vector, JSFunction::kSharedFunctionInfoOffset)); |
| 5750 | lw(vector, |
| 5751 | FieldMemOperand(vector, SharedFunctionInfo::kFeedbackVectorOffset)); |
| 5752 | } |
| 5753 | |
| 5754 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 5755 | void MacroAssembler::EnterFrame(StackFrame::Type type, |
| 5756 | bool load_constant_pool_pointer_reg) { |
| 5757 | // Out-of-line constant pool not implemented on mips. |
| 5758 | UNREACHABLE(); |
| 5759 | } |
| 5760 | |
| 5761 | |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 5762 | void MacroAssembler::EnterFrame(StackFrame::Type type) { |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 5763 | int stack_offset, fp_offset; |
| 5764 | if (type == StackFrame::INTERNAL) { |
| 5765 | stack_offset = -4 * kPointerSize; |
| 5766 | fp_offset = 2 * kPointerSize; |
| 5767 | } else { |
| 5768 | stack_offset = -3 * kPointerSize; |
| 5769 | fp_offset = 1 * kPointerSize; |
| 5770 | } |
| 5771 | addiu(sp, sp, stack_offset); |
| 5772 | stack_offset = -stack_offset - kPointerSize; |
| 5773 | sw(ra, MemOperand(sp, stack_offset)); |
| 5774 | stack_offset -= kPointerSize; |
| 5775 | sw(fp, MemOperand(sp, stack_offset)); |
| 5776 | stack_offset -= kPointerSize; |
| 5777 | li(t9, Operand(Smi::FromInt(type))); |
| 5778 | sw(t9, MemOperand(sp, stack_offset)); |
| 5779 | if (type == StackFrame::INTERNAL) { |
| 5780 | DCHECK_EQ(stack_offset, kPointerSize); |
| 5781 | li(t9, Operand(CodeObject())); |
| 5782 | sw(t9, MemOperand(sp, 0)); |
| 5783 | } else { |
| 5784 | DCHECK_EQ(stack_offset, 0); |
| 5785 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5786 | // Adjust FP to point to saved FP. |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 5787 | Addu(fp, sp, Operand(fp_offset)); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 5788 | } |
| 5789 | |
| 5790 | |
| 5791 | void MacroAssembler::LeaveFrame(StackFrame::Type type) { |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 5792 | addiu(sp, fp, 2 * kPointerSize); |
| 5793 | lw(ra, MemOperand(fp, 1 * kPointerSize)); |
| 5794 | lw(fp, MemOperand(fp, 0 * kPointerSize)); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 5795 | } |
| 5796 | |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 5797 | void MacroAssembler::EnterExitFrame(bool save_doubles, int stack_space) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5798 | // Set up the frame structure on the stack. |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 5799 | STATIC_ASSERT(2 * kPointerSize == ExitFrameConstants::kCallerSPDisplacement); |
| 5800 | STATIC_ASSERT(1 * kPointerSize == ExitFrameConstants::kCallerPCOffset); |
| 5801 | STATIC_ASSERT(0 * kPointerSize == ExitFrameConstants::kCallerFPOffset); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 5802 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 5803 | // This is how the stack will look: |
| 5804 | // fp + 2 (==kCallerSPDisplacement) - old stack's end |
| 5805 | // [fp + 1 (==kCallerPCOffset)] - saved old ra |
| 5806 | // [fp + 0 (==kCallerFPOffset)] - saved old fp |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 5807 | // [fp - 1 StackFrame::EXIT Smi |
| 5808 | // [fp - 2 (==kSPOffset)] - sp of the called function |
| 5809 | // [fp - 3 (==kCodeOffset)] - CodeObject |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 5810 | // fp - (2 + stack_space + alignment) == sp == [fp - kSPOffset] - top of the |
| 5811 | // new stack (will contain saved ra) |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 5812 | |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 5813 | // Save registers and reserve room for saved entry sp and code object. |
| 5814 | addiu(sp, sp, -2 * kPointerSize - ExitFrameConstants::kFixedFrameSizeFromFp); |
| 5815 | sw(ra, MemOperand(sp, 4 * kPointerSize)); |
| 5816 | sw(fp, MemOperand(sp, 3 * kPointerSize)); |
| 5817 | li(at, Operand(Smi::FromInt(StackFrame::EXIT))); |
| 5818 | sw(at, MemOperand(sp, 2 * kPointerSize)); |
| 5819 | // Set up new frame pointer. |
| 5820 | addiu(fp, sp, ExitFrameConstants::kFixedFrameSizeFromFp); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 5821 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 5822 | if (emit_debug_code()) { |
| 5823 | sw(zero_reg, MemOperand(fp, ExitFrameConstants::kSPOffset)); |
| 5824 | } |
| 5825 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5826 | // Accessed from ExitFrame::code_slot. |
| 5827 | li(t8, Operand(CodeObject()), CONSTANT_SIZE); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 5828 | sw(t8, MemOperand(fp, ExitFrameConstants::kCodeOffset)); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 5829 | |
| 5830 | // Save the frame pointer and the context in top. |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 5831 | li(t8, Operand(ExternalReference(Isolate::kCEntryFPAddress, isolate()))); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5832 | sw(fp, MemOperand(t8)); |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 5833 | li(t8, Operand(ExternalReference(Isolate::kContextAddress, isolate()))); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5834 | sw(cp, MemOperand(t8)); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 5835 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 5836 | const int frame_alignment = MacroAssembler::ActivationFrameAlignment(); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5837 | if (save_doubles) { |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 5838 | // 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] | 5839 | DCHECK(kDoubleSize == frame_alignment); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 5840 | if (frame_alignment > 0) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5841 | DCHECK(base::bits::IsPowerOfTwo32(frame_alignment)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 5842 | And(sp, sp, Operand(-frame_alignment)); // Align stack. |
| 5843 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5844 | int space = FPURegister::kMaxNumRegisters * kDoubleSize; |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5845 | Subu(sp, sp, Operand(space)); |
| 5846 | // Remember: we only need to save every 2nd double FPU value. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5847 | for (int i = 0; i < FPURegister::kMaxNumRegisters; i+=2) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5848 | FPURegister reg = FPURegister::from_code(i); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 5849 | sdc1(reg, MemOperand(sp, i * kDoubleSize)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5850 | } |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5851 | } |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 5852 | |
| 5853 | // Reserve place for the return address, stack space and an optional slot |
| 5854 | // (used by the DirectCEntryStub to hold the return value if a struct is |
| 5855 | // returned) and align the frame preparing for calling the runtime function. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5856 | DCHECK(stack_space >= 0); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 5857 | Subu(sp, sp, Operand((stack_space + 2) * kPointerSize)); |
| 5858 | if (frame_alignment > 0) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5859 | DCHECK(base::bits::IsPowerOfTwo32(frame_alignment)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 5860 | And(sp, sp, Operand(-frame_alignment)); // Align stack. |
| 5861 | } |
| 5862 | |
| 5863 | // Set the exit frame sp value to point just before the return address |
| 5864 | // location. |
| 5865 | addiu(at, sp, kPointerSize); |
| 5866 | sw(at, MemOperand(fp, ExitFrameConstants::kSPOffset)); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 5867 | } |
| 5868 | |
| 5869 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 5870 | void MacroAssembler::LeaveExitFrame(bool save_doubles, Register argument_count, |
| 5871 | bool restore_context, bool do_return, |
| 5872 | bool argument_count_is_length) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5873 | // Optionally restore all double registers. |
| 5874 | if (save_doubles) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5875 | // Remember: we only need to restore every 2nd double FPU value. |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 5876 | lw(t8, MemOperand(fp, ExitFrameConstants::kSPOffset)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5877 | for (int i = 0; i < FPURegister::kMaxNumRegisters; i+=2) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5878 | FPURegister reg = FPURegister::from_code(i); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 5879 | ldc1(reg, MemOperand(t8, i * kDoubleSize + kPointerSize)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5880 | } |
| 5881 | } |
| 5882 | |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 5883 | // Clear top frame. |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 5884 | li(t8, Operand(ExternalReference(Isolate::kCEntryFPAddress, isolate()))); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5885 | sw(zero_reg, MemOperand(t8)); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 5886 | |
| 5887 | // Restore current context from top and clear it in debug mode. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5888 | if (restore_context) { |
| 5889 | li(t8, Operand(ExternalReference(Isolate::kContextAddress, isolate()))); |
| 5890 | lw(cp, MemOperand(t8)); |
| 5891 | } |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 5892 | #ifdef DEBUG |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5893 | li(t8, Operand(ExternalReference(Isolate::kContextAddress, isolate()))); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5894 | sw(a3, MemOperand(t8)); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 5895 | #endif |
| 5896 | |
| 5897 | // Pop the arguments, restore registers, and return. |
| 5898 | mov(sp, fp); // Respect ABI stack constraint. |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 5899 | lw(fp, MemOperand(sp, ExitFrameConstants::kCallerFPOffset)); |
| 5900 | lw(ra, MemOperand(sp, ExitFrameConstants::kCallerPCOffset)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5901 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 5902 | if (argument_count.is_valid()) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 5903 | if (argument_count_is_length) { |
| 5904 | addu(sp, sp, argument_count); |
| 5905 | } else { |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 5906 | Lsa(sp, sp, argument_count, kPointerSizeLog2, t8); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 5907 | } |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 5908 | } |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5909 | |
| 5910 | if (do_return) { |
| 5911 | Ret(USE_DELAY_SLOT); |
| 5912 | // If returning, the instruction in the delay slot will be the addiu below. |
| 5913 | } |
| 5914 | addiu(sp, sp, 8); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 5915 | } |
| 5916 | |
| 5917 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5918 | void MacroAssembler::InitializeNewString(Register string, |
| 5919 | Register length, |
| 5920 | Heap::RootListIndex map_index, |
| 5921 | Register scratch1, |
| 5922 | Register scratch2) { |
| 5923 | sll(scratch1, length, kSmiTagSize); |
| 5924 | LoadRoot(scratch2, map_index); |
| 5925 | sw(scratch1, FieldMemOperand(string, String::kLengthOffset)); |
| 5926 | li(scratch1, Operand(String::kEmptyHashField)); |
| 5927 | sw(scratch2, FieldMemOperand(string, HeapObject::kMapOffset)); |
| 5928 | sw(scratch1, FieldMemOperand(string, String::kHashFieldOffset)); |
| 5929 | } |
| 5930 | |
| 5931 | |
| 5932 | int MacroAssembler::ActivationFrameAlignment() { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5933 | #if V8_HOST_ARCH_MIPS |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5934 | // Running on the real platform. Use the alignment as mandated by the local |
| 5935 | // environment. |
| 5936 | // Note: This will break if we ever start generating snapshots on one Mips |
| 5937 | // platform for another Mips platform with a different alignment. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5938 | return base::OS::ActivationFrameAlignment(); |
| 5939 | #else // V8_HOST_ARCH_MIPS |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5940 | // If we are using the simulator then we should always align to the expected |
| 5941 | // alignment. As the simulator is used to generate snapshots we do not know |
| 5942 | // if the target platform will need alignment, so this is controlled from a |
| 5943 | // flag. |
| 5944 | return FLAG_sim_stack_alignment; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5945 | #endif // V8_HOST_ARCH_MIPS |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5946 | } |
| 5947 | |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 5948 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 5949 | void MacroAssembler::AssertStackIsAligned() { |
| 5950 | if (emit_debug_code()) { |
| 5951 | const int frame_alignment = ActivationFrameAlignment(); |
| 5952 | const int frame_alignment_mask = frame_alignment - 1; |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5953 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 5954 | if (frame_alignment > kPointerSize) { |
| 5955 | Label alignment_as_expected; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5956 | DCHECK(base::bits::IsPowerOfTwo32(frame_alignment)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 5957 | andi(at, sp, frame_alignment_mask); |
| 5958 | Branch(&alignment_as_expected, eq, at, Operand(zero_reg)); |
| 5959 | // Don't use Check here, as it will call Runtime_Abort re-entering here. |
| 5960 | stop("Unexpected stack alignment"); |
| 5961 | bind(&alignment_as_expected); |
| 5962 | } |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 5963 | } |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 5964 | } |
| 5965 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5966 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5967 | void MacroAssembler::JumpIfNotPowerOfTwoOrZero( |
| 5968 | Register reg, |
| 5969 | Register scratch, |
| 5970 | Label* not_power_of_two_or_zero) { |
| 5971 | Subu(scratch, reg, Operand(1)); |
| 5972 | Branch(USE_DELAY_SLOT, not_power_of_two_or_zero, lt, |
| 5973 | scratch, Operand(zero_reg)); |
| 5974 | and_(at, scratch, reg); // In the delay slot. |
| 5975 | Branch(not_power_of_two_or_zero, ne, at, Operand(zero_reg)); |
| 5976 | } |
| 5977 | |
| 5978 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5979 | void MacroAssembler::SmiTagCheckOverflow(Register reg, Register overflow) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5980 | DCHECK(!reg.is(overflow)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5981 | mov(overflow, reg); // Save original value. |
| 5982 | SmiTag(reg); |
| 5983 | xor_(overflow, overflow, reg); // Overflow if (value ^ 2 * value) < 0. |
| 5984 | } |
| 5985 | |
| 5986 | |
| 5987 | void MacroAssembler::SmiTagCheckOverflow(Register dst, |
| 5988 | Register src, |
| 5989 | Register overflow) { |
| 5990 | if (dst.is(src)) { |
| 5991 | // Fall back to slower case. |
| 5992 | SmiTagCheckOverflow(dst, overflow); |
| 5993 | } else { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5994 | DCHECK(!dst.is(src)); |
| 5995 | DCHECK(!dst.is(overflow)); |
| 5996 | DCHECK(!src.is(overflow)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5997 | SmiTag(dst, src); |
| 5998 | xor_(overflow, dst, src); // Overflow if (value ^ 2 * value) < 0. |
| 5999 | } |
| 6000 | } |
| 6001 | |
| 6002 | |
| 6003 | void MacroAssembler::UntagAndJumpIfSmi(Register dst, |
| 6004 | Register src, |
| 6005 | Label* smi_case) { |
| 6006 | JumpIfSmi(src, smi_case, at, USE_DELAY_SLOT); |
| 6007 | SmiUntag(dst, src); |
| 6008 | } |
| 6009 | |
| 6010 | |
| 6011 | void MacroAssembler::UntagAndJumpIfNotSmi(Register dst, |
| 6012 | Register src, |
| 6013 | Label* non_smi_case) { |
| 6014 | JumpIfNotSmi(src, non_smi_case, at, USE_DELAY_SLOT); |
| 6015 | SmiUntag(dst, src); |
| 6016 | } |
| 6017 | |
| 6018 | void MacroAssembler::JumpIfSmi(Register value, |
| 6019 | Label* smi_label, |
| 6020 | Register scratch, |
| 6021 | BranchDelaySlot bd) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 6022 | DCHECK_EQ(0, kSmiTag); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 6023 | andi(scratch, value, kSmiTagMask); |
| 6024 | Branch(bd, smi_label, eq, scratch, Operand(zero_reg)); |
| 6025 | } |
| 6026 | |
| 6027 | void MacroAssembler::JumpIfNotSmi(Register value, |
| 6028 | Label* not_smi_label, |
| 6029 | Register scratch, |
| 6030 | BranchDelaySlot bd) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 6031 | DCHECK_EQ(0, kSmiTag); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 6032 | andi(scratch, value, kSmiTagMask); |
| 6033 | Branch(bd, not_smi_label, ne, scratch, Operand(zero_reg)); |
| 6034 | } |
| 6035 | |
| 6036 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 6037 | void MacroAssembler::JumpIfNotBothSmi(Register reg1, |
| 6038 | Register reg2, |
| 6039 | Label* on_not_both_smi) { |
| 6040 | STATIC_ASSERT(kSmiTag == 0); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 6041 | DCHECK_EQ(1, kSmiTagMask); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 6042 | or_(at, reg1, reg2); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 6043 | JumpIfNotSmi(at, on_not_both_smi); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 6044 | } |
| 6045 | |
| 6046 | |
| 6047 | void MacroAssembler::JumpIfEitherSmi(Register reg1, |
| 6048 | Register reg2, |
| 6049 | Label* on_either_smi) { |
| 6050 | STATIC_ASSERT(kSmiTag == 0); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 6051 | DCHECK_EQ(1, kSmiTagMask); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 6052 | // Both Smi tags must be 1 (not Smi). |
| 6053 | and_(at, reg1, reg2); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 6054 | JumpIfSmi(at, on_either_smi); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 6055 | } |
| 6056 | |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 6057 | void MacroAssembler::AssertNotNumber(Register object) { |
| 6058 | if (emit_debug_code()) { |
| 6059 | STATIC_ASSERT(kSmiTag == 0); |
| 6060 | andi(at, object, kSmiTagMask); |
| 6061 | Check(ne, kOperandIsANumber, at, Operand(zero_reg)); |
| 6062 | GetObjectType(object, t8, t8); |
| 6063 | Check(ne, kOperandIsNotANumber, t8, Operand(HEAP_NUMBER_TYPE)); |
| 6064 | } |
| 6065 | } |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 6066 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 6067 | void MacroAssembler::AssertNotSmi(Register object) { |
| 6068 | if (emit_debug_code()) { |
| 6069 | STATIC_ASSERT(kSmiTag == 0); |
| 6070 | andi(at, object, kSmiTagMask); |
| 6071 | Check(ne, kOperandIsASmi, at, Operand(zero_reg)); |
| 6072 | } |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 6073 | } |
| 6074 | |
| 6075 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 6076 | void MacroAssembler::AssertSmi(Register object) { |
| 6077 | if (emit_debug_code()) { |
| 6078 | STATIC_ASSERT(kSmiTag == 0); |
| 6079 | andi(at, object, kSmiTagMask); |
| 6080 | Check(eq, kOperandIsASmi, at, Operand(zero_reg)); |
| 6081 | } |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 6082 | } |
| 6083 | |
| 6084 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 6085 | void MacroAssembler::AssertString(Register object) { |
| 6086 | if (emit_debug_code()) { |
| 6087 | STATIC_ASSERT(kSmiTag == 0); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 6088 | SmiTst(object, t8); |
| 6089 | Check(ne, kOperandIsASmiAndNotAString, t8, Operand(zero_reg)); |
| 6090 | GetObjectType(object, t8, t8); |
| 6091 | Check(lo, kOperandIsNotAString, t8, Operand(FIRST_NONSTRING_TYPE)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 6092 | } |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 6093 | } |
| 6094 | |
| 6095 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 6096 | void MacroAssembler::AssertName(Register object) { |
| 6097 | if (emit_debug_code()) { |
| 6098 | STATIC_ASSERT(kSmiTag == 0); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 6099 | SmiTst(object, t8); |
| 6100 | Check(ne, kOperandIsASmiAndNotAName, t8, Operand(zero_reg)); |
| 6101 | GetObjectType(object, t8, t8); |
| 6102 | Check(le, kOperandIsNotAName, t8, Operand(LAST_NAME_TYPE)); |
| 6103 | } |
| 6104 | } |
| 6105 | |
| 6106 | |
| 6107 | void MacroAssembler::AssertFunction(Register object) { |
| 6108 | if (emit_debug_code()) { |
| 6109 | STATIC_ASSERT(kSmiTag == 0); |
| 6110 | SmiTst(object, t8); |
| 6111 | Check(ne, kOperandIsASmiAndNotAFunction, t8, Operand(zero_reg)); |
| 6112 | GetObjectType(object, t8, t8); |
| 6113 | Check(eq, kOperandIsNotAFunction, t8, Operand(JS_FUNCTION_TYPE)); |
| 6114 | } |
| 6115 | } |
| 6116 | |
| 6117 | |
| 6118 | void MacroAssembler::AssertBoundFunction(Register object) { |
| 6119 | if (emit_debug_code()) { |
| 6120 | STATIC_ASSERT(kSmiTag == 0); |
| 6121 | SmiTst(object, t8); |
| 6122 | Check(ne, kOperandIsASmiAndNotABoundFunction, t8, Operand(zero_reg)); |
| 6123 | GetObjectType(object, t8, t8); |
| 6124 | Check(eq, kOperandIsNotABoundFunction, t8, Operand(JS_BOUND_FUNCTION_TYPE)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 6125 | } |
| 6126 | } |
| 6127 | |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame^] | 6128 | void MacroAssembler::AssertGeneratorObject(Register object) { |
| 6129 | if (emit_debug_code()) { |
| 6130 | STATIC_ASSERT(kSmiTag == 0); |
| 6131 | SmiTst(object, t8); |
| 6132 | Check(ne, kOperandIsASmiAndNotAGeneratorObject, t8, Operand(zero_reg)); |
| 6133 | GetObjectType(object, t8, t8); |
| 6134 | Check(eq, kOperandIsNotAGeneratorObject, t8, |
| 6135 | Operand(JS_GENERATOR_OBJECT_TYPE)); |
| 6136 | } |
| 6137 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 6138 | |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 6139 | void MacroAssembler::AssertReceiver(Register object) { |
| 6140 | if (emit_debug_code()) { |
| 6141 | STATIC_ASSERT(kSmiTag == 0); |
| 6142 | SmiTst(object, t8); |
| 6143 | Check(ne, kOperandIsASmiAndNotAReceiver, t8, Operand(zero_reg)); |
| 6144 | GetObjectType(object, t8, t8); |
| 6145 | Check(ge, kOperandIsNotAReceiver, t8, Operand(FIRST_JS_RECEIVER_TYPE)); |
| 6146 | } |
| 6147 | } |
| 6148 | |
| 6149 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 6150 | void MacroAssembler::AssertUndefinedOrAllocationSite(Register object, |
| 6151 | Register scratch) { |
| 6152 | if (emit_debug_code()) { |
| 6153 | Label done_checking; |
| 6154 | AssertNotSmi(object); |
| 6155 | LoadRoot(scratch, Heap::kUndefinedValueRootIndex); |
| 6156 | Branch(&done_checking, eq, object, Operand(scratch)); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 6157 | lw(t8, FieldMemOperand(object, HeapObject::kMapOffset)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 6158 | LoadRoot(scratch, Heap::kAllocationSiteMapRootIndex); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 6159 | Assert(eq, kExpectedUndefinedOrCell, t8, Operand(scratch)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 6160 | bind(&done_checking); |
| 6161 | } |
| 6162 | } |
| 6163 | |
| 6164 | |
| 6165 | void MacroAssembler::AssertIsRoot(Register reg, Heap::RootListIndex index) { |
| 6166 | if (emit_debug_code()) { |
| 6167 | DCHECK(!reg.is(at)); |
| 6168 | LoadRoot(at, index); |
| 6169 | Check(eq, kHeapNumberMapRegisterClobbered, reg, Operand(at)); |
| 6170 | } |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 6171 | } |
| 6172 | |
| 6173 | |
| 6174 | void MacroAssembler::JumpIfNotHeapNumber(Register object, |
| 6175 | Register heap_number_map, |
| 6176 | Register scratch, |
| 6177 | Label* on_not_heap_number) { |
| 6178 | lw(scratch, FieldMemOperand(object, HeapObject::kMapOffset)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 6179 | AssertIsRoot(heap_number_map, Heap::kHeapNumberMapRootIndex); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 6180 | Branch(on_not_heap_number, ne, scratch, Operand(heap_number_map)); |
| 6181 | } |
| 6182 | |
| 6183 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 6184 | void MacroAssembler::JumpIfNonSmisNotBothSequentialOneByteStrings( |
| 6185 | Register first, Register second, Register scratch1, Register scratch2, |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 6186 | Label* failure) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 6187 | // Test that both first and second are sequential one-byte strings. |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 6188 | // Assume that they are non-smis. |
| 6189 | lw(scratch1, FieldMemOperand(first, HeapObject::kMapOffset)); |
| 6190 | lw(scratch2, FieldMemOperand(second, HeapObject::kMapOffset)); |
| 6191 | lbu(scratch1, FieldMemOperand(scratch1, Map::kInstanceTypeOffset)); |
| 6192 | lbu(scratch2, FieldMemOperand(scratch2, Map::kInstanceTypeOffset)); |
| 6193 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 6194 | JumpIfBothInstanceTypesAreNotSequentialOneByte(scratch1, scratch2, scratch1, |
| 6195 | scratch2, failure); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 6196 | } |
| 6197 | |
| 6198 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 6199 | void MacroAssembler::JumpIfNotBothSequentialOneByteStrings(Register first, |
| 6200 | Register second, |
| 6201 | Register scratch1, |
| 6202 | Register scratch2, |
| 6203 | Label* failure) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 6204 | // Check that neither is a smi. |
| 6205 | STATIC_ASSERT(kSmiTag == 0); |
| 6206 | And(scratch1, first, Operand(second)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 6207 | JumpIfSmi(scratch1, failure); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 6208 | JumpIfNonSmisNotBothSequentialOneByteStrings(first, second, scratch1, |
| 6209 | scratch2, failure); |
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::JumpIfBothInstanceTypesAreNotSequentialOneByte( |
| 6214 | Register first, Register second, Register scratch1, Register scratch2, |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 6215 | Label* failure) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 6216 | const int kFlatOneByteStringMask = |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 6217 | kIsNotStringMask | kStringEncodingMask | kStringRepresentationMask; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 6218 | const int kFlatOneByteStringTag = |
| 6219 | kStringTag | kOneByteStringTag | kSeqStringTag; |
| 6220 | DCHECK(kFlatOneByteStringTag <= 0xffff); // Ensure this fits 16-bit immed. |
| 6221 | andi(scratch1, first, kFlatOneByteStringMask); |
| 6222 | Branch(failure, ne, scratch1, Operand(kFlatOneByteStringTag)); |
| 6223 | andi(scratch2, second, kFlatOneByteStringMask); |
| 6224 | Branch(failure, ne, scratch2, Operand(kFlatOneByteStringTag)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 6225 | } |
| 6226 | |
| 6227 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 6228 | void MacroAssembler::JumpIfInstanceTypeIsNotSequentialOneByte(Register type, |
| 6229 | Register scratch, |
| 6230 | Label* failure) { |
| 6231 | const int kFlatOneByteStringMask = |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 6232 | kIsNotStringMask | kStringEncodingMask | kStringRepresentationMask; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 6233 | const int kFlatOneByteStringTag = |
| 6234 | kStringTag | kOneByteStringTag | kSeqStringTag; |
| 6235 | And(scratch, type, Operand(kFlatOneByteStringMask)); |
| 6236 | Branch(failure, ne, scratch, Operand(kFlatOneByteStringTag)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 6237 | } |
| 6238 | |
| 6239 | |
| 6240 | static const int kRegisterPassedArguments = 4; |
| 6241 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 6242 | int MacroAssembler::CalculateStackPassedWords(int num_reg_arguments, |
| 6243 | int num_double_arguments) { |
| 6244 | int stack_passed_words = 0; |
| 6245 | num_reg_arguments += 2 * num_double_arguments; |
| 6246 | |
| 6247 | // Up to four simple arguments are passed in registers a0..a3. |
| 6248 | if (num_reg_arguments > kRegisterPassedArguments) { |
| 6249 | stack_passed_words += num_reg_arguments - kRegisterPassedArguments; |
| 6250 | } |
| 6251 | stack_passed_words += kCArgSlotCount; |
| 6252 | return stack_passed_words; |
| 6253 | } |
| 6254 | |
| 6255 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 6256 | void MacroAssembler::EmitSeqStringSetCharCheck(Register string, |
| 6257 | Register index, |
| 6258 | Register value, |
| 6259 | Register scratch, |
| 6260 | uint32_t encoding_mask) { |
| 6261 | Label is_object; |
| 6262 | SmiTst(string, at); |
| 6263 | Check(ne, kNonObject, at, Operand(zero_reg)); |
| 6264 | |
| 6265 | lw(at, FieldMemOperand(string, HeapObject::kMapOffset)); |
| 6266 | lbu(at, FieldMemOperand(at, Map::kInstanceTypeOffset)); |
| 6267 | |
| 6268 | andi(at, at, kStringRepresentationMask | kStringEncodingMask); |
| 6269 | li(scratch, Operand(encoding_mask)); |
| 6270 | Check(eq, kUnexpectedStringType, at, Operand(scratch)); |
| 6271 | |
| 6272 | // The index is assumed to be untagged coming in, tag it to compare with the |
| 6273 | // string length without using a temp register, it is restored at the end of |
| 6274 | // this function. |
| 6275 | Label index_tag_ok, index_tag_bad; |
| 6276 | TrySmiTag(index, scratch, &index_tag_bad); |
| 6277 | Branch(&index_tag_ok); |
| 6278 | bind(&index_tag_bad); |
| 6279 | Abort(kIndexIsTooLarge); |
| 6280 | bind(&index_tag_ok); |
| 6281 | |
| 6282 | lw(at, FieldMemOperand(string, String::kLengthOffset)); |
| 6283 | Check(lt, kIndexIsTooLarge, index, Operand(at)); |
| 6284 | |
| 6285 | DCHECK(Smi::FromInt(0) == 0); |
| 6286 | Check(ge, kIndexIsNegative, index, Operand(zero_reg)); |
| 6287 | |
| 6288 | SmiUntag(index, index); |
| 6289 | } |
| 6290 | |
| 6291 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 6292 | void MacroAssembler::PrepareCallCFunction(int num_reg_arguments, |
| 6293 | int num_double_arguments, |
| 6294 | Register scratch) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 6295 | int frame_alignment = ActivationFrameAlignment(); |
| 6296 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 6297 | // Up to four simple arguments are passed in registers a0..a3. |
| 6298 | // Those four arguments must have reserved argument slots on the stack for |
| 6299 | // mips, even though those argument slots are not normally used. |
| 6300 | // Remaining arguments are pushed on the stack, above (higher address than) |
| 6301 | // the argument slots. |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 6302 | int stack_passed_arguments = CalculateStackPassedWords( |
| 6303 | num_reg_arguments, num_double_arguments); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 6304 | if (frame_alignment > kPointerSize) { |
| 6305 | // Make stack end at alignment and make room for num_arguments - 4 words |
| 6306 | // and the original value of sp. |
| 6307 | mov(scratch, sp); |
| 6308 | Subu(sp, sp, Operand((stack_passed_arguments + 1) * kPointerSize)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 6309 | DCHECK(base::bits::IsPowerOfTwo32(frame_alignment)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 6310 | And(sp, sp, Operand(-frame_alignment)); |
| 6311 | sw(scratch, MemOperand(sp, stack_passed_arguments * kPointerSize)); |
| 6312 | } else { |
| 6313 | Subu(sp, sp, Operand(stack_passed_arguments * kPointerSize)); |
| 6314 | } |
| 6315 | } |
| 6316 | |
| 6317 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 6318 | void MacroAssembler::PrepareCallCFunction(int num_reg_arguments, |
| 6319 | Register scratch) { |
| 6320 | PrepareCallCFunction(num_reg_arguments, 0, scratch); |
| 6321 | } |
| 6322 | |
| 6323 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 6324 | void MacroAssembler::CallCFunction(ExternalReference function, |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 6325 | int num_reg_arguments, |
| 6326 | int num_double_arguments) { |
| 6327 | li(t8, Operand(function)); |
| 6328 | CallCFunctionHelper(t8, num_reg_arguments, num_double_arguments); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 6329 | } |
| 6330 | |
| 6331 | |
| 6332 | void MacroAssembler::CallCFunction(Register function, |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 6333 | int num_reg_arguments, |
| 6334 | int num_double_arguments) { |
| 6335 | CallCFunctionHelper(function, num_reg_arguments, num_double_arguments); |
| 6336 | } |
| 6337 | |
| 6338 | |
| 6339 | void MacroAssembler::CallCFunction(ExternalReference function, |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 6340 | int num_arguments) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 6341 | CallCFunction(function, num_arguments, 0); |
| 6342 | } |
| 6343 | |
| 6344 | |
| 6345 | void MacroAssembler::CallCFunction(Register function, |
| 6346 | int num_arguments) { |
| 6347 | CallCFunction(function, num_arguments, 0); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 6348 | } |
| 6349 | |
| 6350 | |
| 6351 | void MacroAssembler::CallCFunctionHelper(Register function, |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 6352 | int num_reg_arguments, |
| 6353 | int num_double_arguments) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 6354 | DCHECK(has_frame()); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 6355 | // Make sure that the stack is aligned before calling a C function unless |
| 6356 | // running in the simulator. The simulator has its own alignment check which |
| 6357 | // provides more information. |
| 6358 | // The argument stots are presumed to have been set up by |
| 6359 | // PrepareCallCFunction. The C function must be called via t9, for mips ABI. |
| 6360 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 6361 | #if V8_HOST_ARCH_MIPS |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 6362 | if (emit_debug_code()) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 6363 | int frame_alignment = base::OS::ActivationFrameAlignment(); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 6364 | int frame_alignment_mask = frame_alignment - 1; |
| 6365 | if (frame_alignment > kPointerSize) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 6366 | DCHECK(base::bits::IsPowerOfTwo32(frame_alignment)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 6367 | Label alignment_as_expected; |
| 6368 | And(at, sp, Operand(frame_alignment_mask)); |
| 6369 | Branch(&alignment_as_expected, eq, at, Operand(zero_reg)); |
| 6370 | // Don't use Check here, as it will call Runtime_Abort possibly |
| 6371 | // re-entering here. |
| 6372 | stop("Unexpected alignment in CallCFunction"); |
| 6373 | bind(&alignment_as_expected); |
| 6374 | } |
| 6375 | } |
| 6376 | #endif // V8_HOST_ARCH_MIPS |
| 6377 | |
| 6378 | // Just call directly. The function called cannot cause a GC, or |
| 6379 | // allow preemption, so the return address in the link register |
| 6380 | // stays correct. |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 6381 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 6382 | if (!function.is(t9)) { |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 6383 | mov(t9, function); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 6384 | function = t9; |
| 6385 | } |
| 6386 | |
| 6387 | Call(function); |
| 6388 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 6389 | int stack_passed_arguments = CalculateStackPassedWords( |
| 6390 | num_reg_arguments, num_double_arguments); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 6391 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 6392 | if (base::OS::ActivationFrameAlignment() > kPointerSize) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 6393 | lw(sp, MemOperand(sp, stack_passed_arguments * kPointerSize)); |
| 6394 | } else { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 6395 | Addu(sp, sp, Operand(stack_passed_arguments * kPointerSize)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 6396 | } |
| 6397 | } |
| 6398 | |
| 6399 | |
| 6400 | #undef BRANCH_ARGS_CHECK |
| 6401 | |
| 6402 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 6403 | void MacroAssembler::CheckPageFlag( |
| 6404 | Register object, |
| 6405 | Register scratch, |
| 6406 | int mask, |
| 6407 | Condition cc, |
| 6408 | Label* condition_met) { |
| 6409 | And(scratch, object, Operand(~Page::kPageAlignmentMask)); |
| 6410 | lw(scratch, MemOperand(scratch, MemoryChunk::kFlagsOffset)); |
| 6411 | And(scratch, scratch, Operand(mask)); |
| 6412 | Branch(condition_met, cc, scratch, Operand(zero_reg)); |
| 6413 | } |
| 6414 | |
| 6415 | |
| 6416 | void MacroAssembler::JumpIfBlack(Register object, |
| 6417 | Register scratch0, |
| 6418 | Register scratch1, |
| 6419 | Label* on_black) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 6420 | HasColor(object, scratch0, scratch1, on_black, 1, 1); // kBlackBitPattern. |
| 6421 | DCHECK(strcmp(Marking::kBlackBitPattern, "11") == 0); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 6422 | } |
| 6423 | |
| 6424 | |
| 6425 | void MacroAssembler::HasColor(Register object, |
| 6426 | Register bitmap_scratch, |
| 6427 | Register mask_scratch, |
| 6428 | Label* has_color, |
| 6429 | int first_bit, |
| 6430 | int second_bit) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 6431 | DCHECK(!AreAliased(object, bitmap_scratch, mask_scratch, t8)); |
| 6432 | DCHECK(!AreAliased(object, bitmap_scratch, mask_scratch, t9)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 6433 | |
| 6434 | GetMarkBits(object, bitmap_scratch, mask_scratch); |
| 6435 | |
| 6436 | Label other_color, word_boundary; |
| 6437 | lw(t9, MemOperand(bitmap_scratch, MemoryChunk::kHeaderSize)); |
| 6438 | And(t8, t9, Operand(mask_scratch)); |
| 6439 | Branch(&other_color, first_bit == 1 ? eq : ne, t8, Operand(zero_reg)); |
| 6440 | // Shift left 1 by adding. |
| 6441 | Addu(mask_scratch, mask_scratch, Operand(mask_scratch)); |
| 6442 | Branch(&word_boundary, eq, mask_scratch, Operand(zero_reg)); |
| 6443 | And(t8, t9, Operand(mask_scratch)); |
| 6444 | Branch(has_color, second_bit == 1 ? ne : eq, t8, Operand(zero_reg)); |
| 6445 | jmp(&other_color); |
| 6446 | |
| 6447 | bind(&word_boundary); |
| 6448 | lw(t9, MemOperand(bitmap_scratch, MemoryChunk::kHeaderSize + kPointerSize)); |
| 6449 | And(t9, t9, Operand(1)); |
| 6450 | Branch(has_color, second_bit == 1 ? ne : eq, t9, Operand(zero_reg)); |
| 6451 | bind(&other_color); |
| 6452 | } |
| 6453 | |
| 6454 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 6455 | void MacroAssembler::GetMarkBits(Register addr_reg, |
| 6456 | Register bitmap_reg, |
| 6457 | Register mask_reg) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 6458 | DCHECK(!AreAliased(addr_reg, bitmap_reg, mask_reg, no_reg)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 6459 | And(bitmap_reg, addr_reg, Operand(~Page::kPageAlignmentMask)); |
| 6460 | Ext(mask_reg, addr_reg, kPointerSizeLog2, Bitmap::kBitsPerCellLog2); |
| 6461 | const int kLowBits = kPointerSizeLog2 + Bitmap::kBitsPerCellLog2; |
| 6462 | Ext(t8, addr_reg, kLowBits, kPageSizeBits - kLowBits); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 6463 | Lsa(bitmap_reg, bitmap_reg, t8, kPointerSizeLog2, t8); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 6464 | li(t8, Operand(1)); |
| 6465 | sllv(mask_reg, t8, mask_reg); |
| 6466 | } |
| 6467 | |
| 6468 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 6469 | void MacroAssembler::JumpIfWhite(Register value, Register bitmap_scratch, |
| 6470 | Register mask_scratch, Register load_scratch, |
| 6471 | Label* value_is_white) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 6472 | DCHECK(!AreAliased(value, bitmap_scratch, mask_scratch, t8)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 6473 | GetMarkBits(value, bitmap_scratch, mask_scratch); |
| 6474 | |
| 6475 | // 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] | 6476 | DCHECK(strcmp(Marking::kWhiteBitPattern, "00") == 0); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 6477 | DCHECK(strcmp(Marking::kBlackBitPattern, "11") == 0); |
| 6478 | DCHECK(strcmp(Marking::kGreyBitPattern, "10") == 0); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 6479 | DCHECK(strcmp(Marking::kImpossibleBitPattern, "01") == 0); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 6480 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 6481 | // Since both black and grey have a 1 in the first position and white does |
| 6482 | // not have a 1 there we only need to check one bit. |
| 6483 | lw(load_scratch, MemOperand(bitmap_scratch, MemoryChunk::kHeaderSize)); |
| 6484 | And(t8, mask_scratch, load_scratch); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 6485 | Branch(value_is_white, eq, t8, Operand(zero_reg)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 6486 | } |
| 6487 | |
| 6488 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 6489 | void MacroAssembler::LoadInstanceDescriptors(Register map, |
| 6490 | Register descriptors) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 6491 | lw(descriptors, FieldMemOperand(map, Map::kDescriptorsOffset)); |
| 6492 | } |
| 6493 | |
| 6494 | |
| 6495 | void MacroAssembler::NumberOfOwnDescriptors(Register dst, Register map) { |
| 6496 | lw(dst, FieldMemOperand(map, Map::kBitField3Offset)); |
| 6497 | DecodeField<Map::NumberOfOwnDescriptorsBits>(dst); |
| 6498 | } |
| 6499 | |
| 6500 | |
| 6501 | void MacroAssembler::EnumLength(Register dst, Register map) { |
| 6502 | STATIC_ASSERT(Map::EnumLengthBits::kShift == 0); |
| 6503 | lw(dst, FieldMemOperand(map, Map::kBitField3Offset)); |
| 6504 | And(dst, dst, Operand(Map::EnumLengthBits::kMask)); |
| 6505 | SmiTag(dst); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 6506 | } |
| 6507 | |
| 6508 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 6509 | void MacroAssembler::LoadAccessor(Register dst, Register holder, |
| 6510 | int accessor_index, |
| 6511 | AccessorComponent accessor) { |
| 6512 | lw(dst, FieldMemOperand(holder, HeapObject::kMapOffset)); |
| 6513 | LoadInstanceDescriptors(dst, dst); |
| 6514 | lw(dst, |
| 6515 | FieldMemOperand(dst, DescriptorArray::GetValueOffset(accessor_index))); |
| 6516 | int offset = accessor == ACCESSOR_GETTER ? AccessorPair::kGetterOffset |
| 6517 | : AccessorPair::kSetterOffset; |
| 6518 | lw(dst, FieldMemOperand(dst, offset)); |
| 6519 | } |
| 6520 | |
| 6521 | |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 6522 | void MacroAssembler::CheckEnumCache(Label* call_runtime) { |
| 6523 | Register null_value = t1; |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 6524 | Register empty_fixed_array_value = t2; |
| 6525 | LoadRoot(empty_fixed_array_value, Heap::kEmptyFixedArrayRootIndex); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 6526 | Label next, start; |
| 6527 | mov(a2, a0); |
| 6528 | |
| 6529 | // Check if the enum length field is properly initialized, indicating that |
| 6530 | // there is an enum cache. |
| 6531 | lw(a1, FieldMemOperand(a2, HeapObject::kMapOffset)); |
| 6532 | |
| 6533 | EnumLength(a3, a1); |
| 6534 | Branch( |
| 6535 | call_runtime, eq, a3, Operand(Smi::FromInt(kInvalidEnumCacheSentinel))); |
| 6536 | |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 6537 | LoadRoot(null_value, Heap::kNullValueRootIndex); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 6538 | jmp(&start); |
| 6539 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 6540 | bind(&next); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 6541 | lw(a1, FieldMemOperand(a2, HeapObject::kMapOffset)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 6542 | |
| 6543 | // For all objects but the receiver, check that the cache is empty. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 6544 | EnumLength(a3, a1); |
| 6545 | Branch(call_runtime, ne, a3, Operand(Smi::FromInt(0))); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 6546 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 6547 | bind(&start); |
| 6548 | |
| 6549 | // Check that there are no elements. Register a2 contains the current JS |
| 6550 | // object we've reached through the prototype chain. |
| 6551 | Label no_elements; |
| 6552 | lw(a2, FieldMemOperand(a2, JSObject::kElementsOffset)); |
| 6553 | Branch(&no_elements, eq, a2, Operand(empty_fixed_array_value)); |
| 6554 | |
| 6555 | // Second chance, the object may be using the empty slow element dictionary. |
| 6556 | LoadRoot(at, Heap::kEmptySlowElementDictionaryRootIndex); |
| 6557 | Branch(call_runtime, ne, a2, Operand(at)); |
| 6558 | |
| 6559 | bind(&no_elements); |
| 6560 | lw(a2, FieldMemOperand(a1, Map::kPrototypeOffset)); |
| 6561 | Branch(&next, ne, a2, Operand(null_value)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 6562 | } |
| 6563 | |
| 6564 | |
| 6565 | void MacroAssembler::ClampUint8(Register output_reg, Register input_reg) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 6566 | DCHECK(!output_reg.is(input_reg)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 6567 | Label done; |
| 6568 | li(output_reg, Operand(255)); |
| 6569 | // Normal branch: nop in delay slot. |
| 6570 | Branch(&done, gt, input_reg, Operand(output_reg)); |
| 6571 | // Use delay slot in this branch. |
| 6572 | Branch(USE_DELAY_SLOT, &done, lt, input_reg, Operand(zero_reg)); |
| 6573 | mov(output_reg, zero_reg); // In delay slot. |
| 6574 | mov(output_reg, input_reg); // Value is in range 0..255. |
| 6575 | bind(&done); |
| 6576 | } |
| 6577 | |
| 6578 | |
| 6579 | void MacroAssembler::ClampDoubleToUint8(Register result_reg, |
| 6580 | DoubleRegister input_reg, |
| 6581 | DoubleRegister temp_double_reg) { |
| 6582 | Label above_zero; |
| 6583 | Label done; |
| 6584 | Label in_bounds; |
| 6585 | |
| 6586 | Move(temp_double_reg, 0.0); |
| 6587 | BranchF(&above_zero, NULL, gt, input_reg, temp_double_reg); |
| 6588 | |
| 6589 | // Double value is less than zero, NaN or Inf, return 0. |
| 6590 | mov(result_reg, zero_reg); |
| 6591 | Branch(&done); |
| 6592 | |
| 6593 | // Double value is >= 255, return 255. |
| 6594 | bind(&above_zero); |
| 6595 | Move(temp_double_reg, 255.0); |
| 6596 | BranchF(&in_bounds, NULL, le, input_reg, temp_double_reg); |
| 6597 | li(result_reg, Operand(255)); |
| 6598 | Branch(&done); |
| 6599 | |
| 6600 | // In 0-255 range, round and truncate. |
| 6601 | bind(&in_bounds); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 6602 | cvt_w_d(temp_double_reg, input_reg); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 6603 | mfc1(result_reg, temp_double_reg); |
| 6604 | bind(&done); |
| 6605 | } |
| 6606 | |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 6607 | void MacroAssembler::TestJSArrayForAllocationMemento(Register receiver_reg, |
| 6608 | Register scratch_reg, |
| 6609 | Label* no_memento_found) { |
| 6610 | Label map_check; |
| 6611 | Label top_check; |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame^] | 6612 | ExternalReference new_space_allocation_top_adr = |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 6613 | ExternalReference::new_space_allocation_top_address(isolate()); |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 6614 | const int kMementoMapOffset = JSArray::kSize - kHeapObjectTag; |
| 6615 | const int kMementoEndOffset = kMementoMapOffset + AllocationMemento::kSize; |
| 6616 | |
| 6617 | // Bail out if the object is not in new space. |
| 6618 | JumpIfNotInNewSpace(receiver_reg, scratch_reg, no_memento_found); |
| 6619 | // If the object is in new space, we need to check whether it is on the same |
| 6620 | // page as the current top. |
| 6621 | Addu(scratch_reg, receiver_reg, Operand(kMementoEndOffset)); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame^] | 6622 | li(at, Operand(new_space_allocation_top_adr)); |
| 6623 | lw(at, MemOperand(at)); |
| 6624 | Xor(scratch_reg, scratch_reg, Operand(at)); |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 6625 | And(scratch_reg, scratch_reg, Operand(~Page::kPageAlignmentMask)); |
| 6626 | Branch(&top_check, eq, scratch_reg, Operand(zero_reg)); |
| 6627 | // The object is on a different page than allocation top. Bail out if the |
| 6628 | // object sits on the page boundary as no memento can follow and we cannot |
| 6629 | // touch the memory following it. |
| 6630 | Addu(scratch_reg, receiver_reg, Operand(kMementoEndOffset)); |
| 6631 | Xor(scratch_reg, scratch_reg, Operand(receiver_reg)); |
| 6632 | And(scratch_reg, scratch_reg, Operand(~Page::kPageAlignmentMask)); |
| 6633 | Branch(no_memento_found, ne, scratch_reg, Operand(zero_reg)); |
| 6634 | // Continue with the actual map check. |
| 6635 | jmp(&map_check); |
| 6636 | // If top is on the same page as the current object, we need to check whether |
| 6637 | // we are below top. |
| 6638 | bind(&top_check); |
| 6639 | Addu(scratch_reg, receiver_reg, Operand(kMementoEndOffset)); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame^] | 6640 | li(at, Operand(new_space_allocation_top_adr)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 6641 | lw(at, MemOperand(at)); |
| 6642 | Branch(no_memento_found, gt, scratch_reg, Operand(at)); |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 6643 | // Memento map check. |
| 6644 | bind(&map_check); |
| 6645 | lw(scratch_reg, MemOperand(receiver_reg, kMementoMapOffset)); |
| 6646 | Branch(no_memento_found, ne, scratch_reg, |
| 6647 | Operand(isolate()->factory()->allocation_memento_map())); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 6648 | } |
| 6649 | |
| 6650 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 6651 | Register GetRegisterThatIsNotOneOf(Register reg1, |
| 6652 | Register reg2, |
| 6653 | Register reg3, |
| 6654 | Register reg4, |
| 6655 | Register reg5, |
| 6656 | Register reg6) { |
| 6657 | RegList regs = 0; |
| 6658 | if (reg1.is_valid()) regs |= reg1.bit(); |
| 6659 | if (reg2.is_valid()) regs |= reg2.bit(); |
| 6660 | if (reg3.is_valid()) regs |= reg3.bit(); |
| 6661 | if (reg4.is_valid()) regs |= reg4.bit(); |
| 6662 | if (reg5.is_valid()) regs |= reg5.bit(); |
| 6663 | if (reg6.is_valid()) regs |= reg6.bit(); |
| 6664 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 6665 | const RegisterConfiguration* config = |
| 6666 | RegisterConfiguration::ArchDefault(RegisterConfiguration::CRANKSHAFT); |
| 6667 | for (int i = 0; i < config->num_allocatable_general_registers(); ++i) { |
| 6668 | int code = config->GetAllocatableGeneralCode(i); |
| 6669 | Register candidate = Register::from_code(code); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 6670 | if (regs & candidate.bit()) continue; |
| 6671 | return candidate; |
| 6672 | } |
| 6673 | UNREACHABLE(); |
| 6674 | return no_reg; |
| 6675 | } |
| 6676 | |
| 6677 | |
| 6678 | void MacroAssembler::JumpIfDictionaryInPrototypeChain( |
| 6679 | Register object, |
| 6680 | Register scratch0, |
| 6681 | Register scratch1, |
| 6682 | Label* found) { |
| 6683 | DCHECK(!scratch1.is(scratch0)); |
| 6684 | Factory* factory = isolate()->factory(); |
| 6685 | Register current = scratch0; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 6686 | Label loop_again, end; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 6687 | |
| 6688 | // Scratch contained elements pointer. |
| 6689 | Move(current, object); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 6690 | lw(current, FieldMemOperand(current, HeapObject::kMapOffset)); |
| 6691 | lw(current, FieldMemOperand(current, Map::kPrototypeOffset)); |
| 6692 | Branch(&end, eq, current, Operand(factory->null_value())); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 6693 | |
| 6694 | // Loop based on the map going up the prototype chain. |
| 6695 | bind(&loop_again); |
| 6696 | lw(current, FieldMemOperand(current, HeapObject::kMapOffset)); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 6697 | lbu(scratch1, FieldMemOperand(current, Map::kInstanceTypeOffset)); |
| 6698 | STATIC_ASSERT(JS_VALUE_TYPE < JS_OBJECT_TYPE); |
| 6699 | STATIC_ASSERT(JS_PROXY_TYPE < JS_OBJECT_TYPE); |
| 6700 | Branch(found, lo, scratch1, Operand(JS_OBJECT_TYPE)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 6701 | lb(scratch1, FieldMemOperand(current, Map::kBitField2Offset)); |
| 6702 | DecodeField<Map::ElementsKindBits>(scratch1); |
| 6703 | Branch(found, eq, scratch1, Operand(DICTIONARY_ELEMENTS)); |
| 6704 | lw(current, FieldMemOperand(current, Map::kPrototypeOffset)); |
| 6705 | Branch(&loop_again, ne, current, Operand(factory->null_value())); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 6706 | |
| 6707 | bind(&end); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 6708 | } |
| 6709 | |
| 6710 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 6711 | bool AreAliased(Register reg1, Register reg2, Register reg3, Register reg4, |
| 6712 | Register reg5, Register reg6, Register reg7, Register reg8, |
| 6713 | Register reg9, Register reg10) { |
| 6714 | int n_of_valid_regs = reg1.is_valid() + reg2.is_valid() + reg3.is_valid() + |
| 6715 | reg4.is_valid() + reg5.is_valid() + reg6.is_valid() + |
| 6716 | reg7.is_valid() + reg8.is_valid() + reg9.is_valid() + |
| 6717 | reg10.is_valid(); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 6718 | |
| 6719 | RegList regs = 0; |
| 6720 | if (reg1.is_valid()) regs |= reg1.bit(); |
| 6721 | if (reg2.is_valid()) regs |= reg2.bit(); |
| 6722 | if (reg3.is_valid()) regs |= reg3.bit(); |
| 6723 | if (reg4.is_valid()) regs |= reg4.bit(); |
| 6724 | if (reg5.is_valid()) regs |= reg5.bit(); |
| 6725 | if (reg6.is_valid()) regs |= reg6.bit(); |
| 6726 | if (reg7.is_valid()) regs |= reg7.bit(); |
| 6727 | if (reg8.is_valid()) regs |= reg8.bit(); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 6728 | if (reg9.is_valid()) regs |= reg9.bit(); |
| 6729 | if (reg10.is_valid()) regs |= reg10.bit(); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 6730 | int n_of_non_aliasing_regs = NumRegs(regs); |
| 6731 | |
| 6732 | return n_of_valid_regs != n_of_non_aliasing_regs; |
| 6733 | } |
| 6734 | |
| 6735 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 6736 | CodePatcher::CodePatcher(Isolate* isolate, byte* address, int instructions, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 6737 | FlushICache flush_cache) |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 6738 | : address_(address), |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 6739 | size_(instructions * Assembler::kInstrSize), |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 6740 | masm_(isolate, address, size_ + Assembler::kGap, CodeObjectRequired::kNo), |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 6741 | flush_cache_(flush_cache) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 6742 | // Create a new macro assembler pointing to the address of the code to patch. |
| 6743 | // The size is adjusted with kGap on order for the assembler to generate size |
| 6744 | // bytes of instructions without failing with buffer size constraints. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 6745 | DCHECK(masm_.reloc_info_writer.pos() == address_ + size_ + Assembler::kGap); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 6746 | } |
| 6747 | |
| 6748 | |
| 6749 | CodePatcher::~CodePatcher() { |
| 6750 | // Indicate that code has changed. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 6751 | if (flush_cache_ == FLUSH) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 6752 | Assembler::FlushICache(masm_.isolate(), address_, size_); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 6753 | } |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 6754 | |
| 6755 | // Check that the code was patched as expected. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 6756 | DCHECK(masm_.pc_ == address_ + size_); |
| 6757 | DCHECK(masm_.reloc_info_writer.pos() == address_ + size_ + Assembler::kGap); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 6758 | } |
| 6759 | |
| 6760 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 6761 | void CodePatcher::Emit(Instr instr) { |
| 6762 | masm()->emit(instr); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 6763 | } |
| 6764 | |
| 6765 | |
| 6766 | void CodePatcher::Emit(Address addr) { |
| 6767 | masm()->emit(reinterpret_cast<Instr>(addr)); |
| 6768 | } |
| 6769 | |
| 6770 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 6771 | void CodePatcher::ChangeBranchCondition(Instr current_instr, |
| 6772 | uint32_t new_opcode) { |
| 6773 | current_instr = (current_instr & ~kOpcodeMask) | new_opcode; |
| 6774 | masm_.emit(current_instr); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 6775 | } |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 6776 | |
| 6777 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 6778 | void MacroAssembler::TruncatingDiv(Register result, |
| 6779 | Register dividend, |
| 6780 | int32_t divisor) { |
| 6781 | DCHECK(!dividend.is(result)); |
| 6782 | DCHECK(!dividend.is(at)); |
| 6783 | DCHECK(!result.is(at)); |
| 6784 | base::MagicNumbersForDivision<uint32_t> mag = |
| 6785 | base::SignedDivisionByConstant(static_cast<uint32_t>(divisor)); |
| 6786 | li(at, Operand(mag.multiplier)); |
| 6787 | Mulh(result, dividend, Operand(at)); |
| 6788 | bool neg = (mag.multiplier & (static_cast<uint32_t>(1) << 31)) != 0; |
| 6789 | if (divisor > 0 && neg) { |
| 6790 | Addu(result, result, Operand(dividend)); |
| 6791 | } |
| 6792 | if (divisor < 0 && !neg && mag.multiplier > 0) { |
| 6793 | Subu(result, result, Operand(dividend)); |
| 6794 | } |
| 6795 | if (mag.shift > 0) sra(result, result, mag.shift); |
| 6796 | srl(at, dividend, 31); |
| 6797 | Addu(result, result, Operand(at)); |
| 6798 | } |
| 6799 | |
| 6800 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 6801 | } // namespace internal |
| 6802 | } // namespace v8 |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 6803 | |
Leon Clarke | f7060e2 | 2010-06-03 12:02:55 +0100 | [diff] [blame] | 6804 | #endif // V8_TARGET_ARCH_MIPS |