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) { |
| 1195 | lwr(rd, rs); |
| 1196 | lwl(rd, MemOperand(rs.rm(), rs.offset() + 3)); |
| 1197 | } |
| 1198 | |
| 1199 | |
| 1200 | void MacroAssembler::Usw(Register rd, const MemOperand& rs) { |
| 1201 | swr(rd, rs); |
| 1202 | swl(rd, MemOperand(rs.rm(), rs.offset() + 3)); |
| 1203 | } |
| 1204 | |
| 1205 | |
| 1206 | void MacroAssembler::li(Register dst, Handle<Object> value, LiFlags mode) { |
| 1207 | AllowDeferredHandleDereference smi_check; |
| 1208 | if (value->IsSmi()) { |
| 1209 | li(dst, Operand(value), mode); |
| 1210 | } else { |
| 1211 | DCHECK(value->IsHeapObject()); |
| 1212 | if (isolate()->heap()->InNewSpace(*value)) { |
| 1213 | Handle<Cell> cell = isolate()->factory()->NewCell(value); |
| 1214 | li(dst, Operand(cell)); |
| 1215 | lw(dst, FieldMemOperand(dst, Cell::kValueOffset)); |
| 1216 | } else { |
| 1217 | li(dst, Operand(value)); |
| 1218 | } |
| 1219 | } |
| 1220 | } |
| 1221 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1222 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1223 | void MacroAssembler::li(Register rd, Operand j, LiFlags mode) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1224 | DCHECK(!j.is_reg()); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1225 | BlockTrampolinePoolScope block_trampoline_pool(this); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1226 | if (!MustUseReg(j.rmode_) && mode == OPTIMIZE_SIZE) { |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1227 | // Normal load of an immediate value which does not need Relocation Info. |
| 1228 | if (is_int16(j.imm32_)) { |
| 1229 | addiu(rd, zero_reg, j.imm32_); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1230 | } else if (!(j.imm32_ & kHiMask)) { |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1231 | ori(rd, zero_reg, j.imm32_); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1232 | } else if (!(j.imm32_ & kImm16Mask)) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1233 | lui(rd, (j.imm32_ >> kLuiShift) & kImm16Mask); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1234 | } else { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1235 | lui(rd, (j.imm32_ >> kLuiShift) & kImm16Mask); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1236 | ori(rd, rd, (j.imm32_ & kImm16Mask)); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1237 | } |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1238 | } else { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1239 | if (MustUseReg(j.rmode_)) { |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1240 | RecordRelocInfo(j.rmode_, j.imm32_); |
| 1241 | } |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1242 | // 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] | 1243 | // 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] | 1244 | lui(rd, (j.imm32_ >> kLuiShift) & kImm16Mask); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1245 | ori(rd, rd, (j.imm32_ & kImm16Mask)); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1246 | } |
| 1247 | } |
| 1248 | |
| 1249 | |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1250 | void MacroAssembler::MultiPush(RegList regs) { |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 1251 | int16_t num_to_push = NumberOfBitsSet(regs); |
| 1252 | int16_t stack_offset = num_to_push * kPointerSize; |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1253 | |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 1254 | Subu(sp, sp, Operand(stack_offset)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1255 | for (int16_t i = kNumRegisters - 1; i >= 0; i--) { |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1256 | if ((regs & (1 << i)) != 0) { |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 1257 | stack_offset -= kPointerSize; |
| 1258 | sw(ToRegister(i), MemOperand(sp, stack_offset)); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1259 | } |
| 1260 | } |
| 1261 | } |
| 1262 | |
| 1263 | |
| 1264 | void MacroAssembler::MultiPushReversed(RegList regs) { |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 1265 | int16_t num_to_push = NumberOfBitsSet(regs); |
| 1266 | int16_t stack_offset = num_to_push * kPointerSize; |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1267 | |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 1268 | Subu(sp, sp, Operand(stack_offset)); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 1269 | for (int16_t i = 0; i < kNumRegisters; i++) { |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1270 | if ((regs & (1 << i)) != 0) { |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 1271 | stack_offset -= kPointerSize; |
| 1272 | sw(ToRegister(i), MemOperand(sp, stack_offset)); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1273 | } |
| 1274 | } |
| 1275 | } |
| 1276 | |
| 1277 | |
| 1278 | void MacroAssembler::MultiPop(RegList regs) { |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 1279 | int16_t stack_offset = 0; |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1280 | |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 1281 | for (int16_t i = 0; i < kNumRegisters; i++) { |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1282 | if ((regs & (1 << i)) != 0) { |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 1283 | lw(ToRegister(i), MemOperand(sp, stack_offset)); |
| 1284 | stack_offset += kPointerSize; |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1285 | } |
| 1286 | } |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 1287 | addiu(sp, sp, stack_offset); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1288 | } |
| 1289 | |
| 1290 | |
| 1291 | void MacroAssembler::MultiPopReversed(RegList regs) { |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 1292 | int16_t stack_offset = 0; |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1293 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1294 | for (int16_t i = kNumRegisters - 1; i >= 0; i--) { |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1295 | if ((regs & (1 << i)) != 0) { |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 1296 | lw(ToRegister(i), MemOperand(sp, stack_offset)); |
| 1297 | stack_offset += kPointerSize; |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1298 | } |
| 1299 | } |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 1300 | addiu(sp, sp, stack_offset); |
| 1301 | } |
| 1302 | |
| 1303 | |
| 1304 | void MacroAssembler::MultiPushFPU(RegList regs) { |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 1305 | int16_t num_to_push = NumberOfBitsSet(regs); |
| 1306 | int16_t stack_offset = num_to_push * kDoubleSize; |
| 1307 | |
| 1308 | Subu(sp, sp, Operand(stack_offset)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1309 | for (int16_t i = kNumRegisters - 1; i >= 0; i--) { |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 1310 | if ((regs & (1 << i)) != 0) { |
| 1311 | stack_offset -= kDoubleSize; |
| 1312 | sdc1(FPURegister::from_code(i), MemOperand(sp, stack_offset)); |
| 1313 | } |
| 1314 | } |
| 1315 | } |
| 1316 | |
| 1317 | |
| 1318 | void MacroAssembler::MultiPushReversedFPU(RegList regs) { |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 1319 | int16_t num_to_push = NumberOfBitsSet(regs); |
| 1320 | int16_t stack_offset = num_to_push * kDoubleSize; |
| 1321 | |
| 1322 | Subu(sp, sp, Operand(stack_offset)); |
| 1323 | for (int16_t i = 0; i < kNumRegisters; i++) { |
| 1324 | if ((regs & (1 << i)) != 0) { |
| 1325 | stack_offset -= kDoubleSize; |
| 1326 | sdc1(FPURegister::from_code(i), MemOperand(sp, stack_offset)); |
| 1327 | } |
| 1328 | } |
| 1329 | } |
| 1330 | |
| 1331 | |
| 1332 | void MacroAssembler::MultiPopFPU(RegList regs) { |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 1333 | int16_t stack_offset = 0; |
| 1334 | |
| 1335 | for (int16_t i = 0; i < kNumRegisters; i++) { |
| 1336 | if ((regs & (1 << i)) != 0) { |
| 1337 | ldc1(FPURegister::from_code(i), MemOperand(sp, stack_offset)); |
| 1338 | stack_offset += kDoubleSize; |
| 1339 | } |
| 1340 | } |
| 1341 | addiu(sp, sp, stack_offset); |
| 1342 | } |
| 1343 | |
| 1344 | |
| 1345 | void MacroAssembler::MultiPopReversedFPU(RegList regs) { |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 1346 | int16_t stack_offset = 0; |
| 1347 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1348 | for (int16_t i = kNumRegisters - 1; i >= 0; i--) { |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 1349 | if ((regs & (1 << i)) != 0) { |
| 1350 | ldc1(FPURegister::from_code(i), MemOperand(sp, stack_offset)); |
| 1351 | stack_offset += kDoubleSize; |
| 1352 | } |
| 1353 | } |
| 1354 | addiu(sp, sp, stack_offset); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1355 | } |
| 1356 | |
| 1357 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1358 | void MacroAssembler::Ext(Register rt, |
| 1359 | Register rs, |
| 1360 | uint16_t pos, |
| 1361 | uint16_t size) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1362 | DCHECK(pos < 32); |
| 1363 | DCHECK(pos + size < 33); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1364 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1365 | if (IsMipsArchVariant(kMips32r2) || IsMipsArchVariant(kMips32r6)) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1366 | ext_(rt, rs, pos, size); |
| 1367 | } else { |
| 1368 | // Move rs to rt and shift it left then right to get the |
| 1369 | // desired bitfield on the right side and zeroes on the left. |
Ben Murdoch | 69a99ed | 2011-11-30 16:03:39 +0000 | [diff] [blame] | 1370 | int shift_left = 32 - (pos + size); |
| 1371 | sll(rt, rs, shift_left); // Acts as a move if shift_left == 0. |
| 1372 | |
| 1373 | int shift_right = 32 - size; |
| 1374 | if (shift_right > 0) { |
| 1375 | srl(rt, rt, shift_right); |
| 1376 | } |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1377 | } |
| 1378 | } |
| 1379 | |
| 1380 | |
| 1381 | void MacroAssembler::Ins(Register rt, |
| 1382 | Register rs, |
| 1383 | uint16_t pos, |
| 1384 | uint16_t size) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1385 | DCHECK(pos < 32); |
| 1386 | DCHECK(pos + size <= 32); |
| 1387 | DCHECK(size != 0); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1388 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1389 | if (IsMipsArchVariant(kMips32r2) || IsMipsArchVariant(kMips32r6)) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1390 | ins_(rt, rs, pos, size); |
| 1391 | } else { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1392 | DCHECK(!rt.is(t8) && !rs.is(t8)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1393 | Subu(at, zero_reg, Operand(1)); |
| 1394 | srl(at, at, 32 - size); |
| 1395 | and_(t8, rs, at); |
| 1396 | sll(t8, t8, pos); |
| 1397 | sll(at, at, pos); |
| 1398 | nor(at, at, zero_reg); |
| 1399 | and_(at, rt, at); |
| 1400 | or_(rt, t8, at); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1401 | } |
| 1402 | } |
| 1403 | |
| 1404 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1405 | void MacroAssembler::Cvt_d_uw(FPURegister fd, Register rs, |
Ben Murdoch | 69a99ed | 2011-11-30 16:03:39 +0000 | [diff] [blame] | 1406 | FPURegister scratch) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1407 | // In FP64Mode we do convertion from long. |
| 1408 | if (IsFp64Mode()) { |
| 1409 | mtc1(rs, scratch); |
| 1410 | Mthc1(zero_reg, scratch); |
| 1411 | cvt_d_l(fd, scratch); |
| 1412 | } else { |
| 1413 | // Convert rs to a FP value in fd. |
| 1414 | DCHECK(!fd.is(scratch)); |
| 1415 | DCHECK(!rs.is(at)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1416 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1417 | Label msb_clear, conversion_done; |
| 1418 | // For a value which is < 2^31, regard it as a signed positve word. |
| 1419 | Branch(&msb_clear, ge, rs, Operand(zero_reg), USE_DELAY_SLOT); |
| 1420 | mtc1(rs, fd); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1421 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1422 | li(at, 0x41F00000); // FP value: 2^32. |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1423 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1424 | // For unsigned inputs > 2^31, we convert to double as a signed int32, |
| 1425 | // then add 2^32 to move it back to unsigned value in range 2^31..2^31-1. |
| 1426 | mtc1(zero_reg, scratch); |
| 1427 | Mthc1(at, scratch); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1428 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1429 | cvt_d_w(fd, fd); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1430 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1431 | Branch(USE_DELAY_SLOT, &conversion_done); |
| 1432 | add_d(fd, fd, scratch); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1433 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1434 | bind(&msb_clear); |
| 1435 | cvt_d_w(fd, fd); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1436 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1437 | bind(&conversion_done); |
| 1438 | } |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1439 | } |
| 1440 | |
| 1441 | |
Ben Murdoch | 69a99ed | 2011-11-30 16:03:39 +0000 | [diff] [blame] | 1442 | void MacroAssembler::Trunc_uw_d(FPURegister fd, |
| 1443 | FPURegister fs, |
| 1444 | FPURegister scratch) { |
| 1445 | Trunc_uw_d(fs, t8, scratch); |
| 1446 | mtc1(t8, fd); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1447 | } |
| 1448 | |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 1449 | void MacroAssembler::Trunc_uw_s(FPURegister fd, FPURegister fs, |
| 1450 | FPURegister scratch) { |
| 1451 | Trunc_uw_s(fs, t8, scratch); |
| 1452 | mtc1(t8, fd); |
| 1453 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1454 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1455 | void MacroAssembler::Trunc_w_d(FPURegister fd, FPURegister fs) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1456 | if (IsMipsArchVariant(kLoongson) && fd.is(fs)) { |
| 1457 | Mfhc1(t8, fs); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1458 | trunc_w_d(fd, fs); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1459 | Mthc1(t8, fs); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1460 | } else { |
| 1461 | trunc_w_d(fd, fs); |
| 1462 | } |
| 1463 | } |
| 1464 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1465 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1466 | void MacroAssembler::Round_w_d(FPURegister fd, FPURegister fs) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1467 | if (IsMipsArchVariant(kLoongson) && fd.is(fs)) { |
| 1468 | Mfhc1(t8, fs); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1469 | round_w_d(fd, fs); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1470 | Mthc1(t8, fs); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1471 | } else { |
| 1472 | round_w_d(fd, fs); |
| 1473 | } |
| 1474 | } |
| 1475 | |
| 1476 | |
| 1477 | void MacroAssembler::Floor_w_d(FPURegister fd, FPURegister fs) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1478 | if (IsMipsArchVariant(kLoongson) && fd.is(fs)) { |
| 1479 | Mfhc1(t8, fs); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1480 | floor_w_d(fd, fs); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1481 | Mthc1(t8, fs); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1482 | } else { |
| 1483 | floor_w_d(fd, fs); |
| 1484 | } |
| 1485 | } |
| 1486 | |
| 1487 | |
| 1488 | void MacroAssembler::Ceil_w_d(FPURegister fd, FPURegister fs) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1489 | if (IsMipsArchVariant(kLoongson) && fd.is(fs)) { |
| 1490 | Mfhc1(t8, fs); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1491 | ceil_w_d(fd, fs); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1492 | Mthc1(t8, fs); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1493 | } else { |
| 1494 | ceil_w_d(fd, fs); |
| 1495 | } |
| 1496 | } |
| 1497 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1498 | |
Ben Murdoch | 69a99ed | 2011-11-30 16:03:39 +0000 | [diff] [blame] | 1499 | void MacroAssembler::Trunc_uw_d(FPURegister fd, |
| 1500 | Register rs, |
| 1501 | FPURegister scratch) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1502 | DCHECK(!fd.is(scratch)); |
| 1503 | DCHECK(!rs.is(at)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1504 | |
Ben Murdoch | 69a99ed | 2011-11-30 16:03:39 +0000 | [diff] [blame] | 1505 | // Load 2^31 into scratch as its float representation. |
| 1506 | li(at, 0x41E00000); |
Ben Murdoch | 69a99ed | 2011-11-30 16:03:39 +0000 | [diff] [blame] | 1507 | mtc1(zero_reg, scratch); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1508 | Mthc1(at, scratch); |
Ben Murdoch | 69a99ed | 2011-11-30 16:03:39 +0000 | [diff] [blame] | 1509 | // Test if scratch > fd. |
Ben Murdoch | 85b7179 | 2012-04-11 18:30:58 +0100 | [diff] [blame] | 1510 | // If fd < 2^31 we can convert it normally. |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1511 | Label simple_convert; |
| 1512 | BranchF(&simple_convert, NULL, lt, fd, scratch); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1513 | |
| 1514 | // First we subtract 2^31 from fd, then trunc it to rs |
| 1515 | // and add 2^31 to rs. |
Ben Murdoch | 69a99ed | 2011-11-30 16:03:39 +0000 | [diff] [blame] | 1516 | sub_d(scratch, fd, scratch); |
| 1517 | trunc_w_d(scratch, scratch); |
| 1518 | mfc1(rs, scratch); |
| 1519 | Or(rs, rs, 1 << 31); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1520 | |
| 1521 | Label done; |
| 1522 | Branch(&done); |
| 1523 | // Simple conversion. |
| 1524 | bind(&simple_convert); |
Ben Murdoch | 69a99ed | 2011-11-30 16:03:39 +0000 | [diff] [blame] | 1525 | trunc_w_d(scratch, fd); |
| 1526 | mfc1(rs, scratch); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1527 | |
| 1528 | bind(&done); |
| 1529 | } |
| 1530 | |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 1531 | void MacroAssembler::Trunc_uw_s(FPURegister fd, Register rs, |
| 1532 | FPURegister scratch) { |
| 1533 | DCHECK(!fd.is(scratch)); |
| 1534 | DCHECK(!rs.is(at)); |
| 1535 | |
| 1536 | // Load 2^31 into scratch as its float representation. |
| 1537 | li(at, 0x4F000000); |
| 1538 | mtc1(at, scratch); |
| 1539 | // Test if scratch > fd. |
| 1540 | // If fd < 2^31 we can convert it normally. |
| 1541 | Label simple_convert; |
| 1542 | BranchF32(&simple_convert, NULL, lt, fd, scratch); |
| 1543 | |
| 1544 | // First we subtract 2^31 from fd, then trunc it to rs |
| 1545 | // and add 2^31 to rs. |
| 1546 | sub_s(scratch, fd, scratch); |
| 1547 | trunc_w_s(scratch, scratch); |
| 1548 | mfc1(rs, scratch); |
| 1549 | Or(rs, rs, 1 << 31); |
| 1550 | |
| 1551 | Label done; |
| 1552 | Branch(&done); |
| 1553 | // Simple conversion. |
| 1554 | bind(&simple_convert); |
| 1555 | trunc_w_s(scratch, fd); |
| 1556 | mfc1(rs, scratch); |
| 1557 | |
| 1558 | bind(&done); |
| 1559 | } |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1560 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1561 | void MacroAssembler::Mthc1(Register rt, FPURegister fs) { |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 1562 | if (IsFp32Mode()) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1563 | mtc1(rt, fs.high()); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 1564 | } else { |
| 1565 | DCHECK(IsFp64Mode() || IsFpxxMode()); |
| 1566 | DCHECK(IsMipsArchVariant(kMips32r2) || IsMipsArchVariant(kMips32r6)); |
| 1567 | mthc1(rt, fs); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1568 | } |
| 1569 | } |
| 1570 | |
| 1571 | |
| 1572 | void MacroAssembler::Mfhc1(Register rt, FPURegister fs) { |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 1573 | if (IsFp32Mode()) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1574 | mfc1(rt, fs.high()); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 1575 | } else { |
| 1576 | DCHECK(IsFp64Mode() || IsFpxxMode()); |
| 1577 | DCHECK(IsMipsArchVariant(kMips32r2) || IsMipsArchVariant(kMips32r6)); |
| 1578 | mfhc1(rt, fs); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1579 | } |
| 1580 | } |
| 1581 | |
| 1582 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1583 | void MacroAssembler::BranchFCommon(SecondaryField sizeField, Label* target, |
| 1584 | Label* nan, Condition cond, FPURegister cmp1, |
| 1585 | FPURegister cmp2, BranchDelaySlot bd) { |
| 1586 | { |
| 1587 | BlockTrampolinePoolScope block_trampoline_pool(this); |
| 1588 | if (cond == al) { |
| 1589 | Branch(bd, target); |
| 1590 | return; |
| 1591 | } |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1592 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1593 | if (IsMipsArchVariant(kMips32r6)) { |
| 1594 | sizeField = sizeField == D ? L : W; |
| 1595 | } |
| 1596 | DCHECK(nan || target); |
| 1597 | // Check for unordered (NaN) cases. |
| 1598 | if (nan) { |
| 1599 | bool long_branch = |
| 1600 | nan->is_bound() ? is_near(nan) : is_trampoline_emitted(); |
| 1601 | if (!IsMipsArchVariant(kMips32r6)) { |
| 1602 | if (long_branch) { |
| 1603 | Label skip; |
| 1604 | c(UN, sizeField, cmp1, cmp2); |
| 1605 | bc1f(&skip); |
| 1606 | nop(); |
| 1607 | BranchLong(nan, bd); |
| 1608 | bind(&skip); |
| 1609 | } else { |
| 1610 | c(UN, sizeField, cmp1, cmp2); |
| 1611 | bc1t(nan); |
| 1612 | if (bd == PROTECT) { |
| 1613 | nop(); |
| 1614 | } |
| 1615 | } |
| 1616 | } else { |
| 1617 | // Use kDoubleCompareReg for comparison result. It has to be unavailable |
| 1618 | // to lithium register allocator. |
| 1619 | DCHECK(!cmp1.is(kDoubleCompareReg) && !cmp2.is(kDoubleCompareReg)); |
| 1620 | if (long_branch) { |
| 1621 | Label skip; |
| 1622 | cmp(UN, sizeField, kDoubleCompareReg, cmp1, cmp2); |
| 1623 | bc1eqz(&skip, kDoubleCompareReg); |
| 1624 | nop(); |
| 1625 | BranchLong(nan, bd); |
| 1626 | bind(&skip); |
| 1627 | } else { |
| 1628 | cmp(UN, sizeField, kDoubleCompareReg, cmp1, cmp2); |
| 1629 | bc1nez(nan, kDoubleCompareReg); |
| 1630 | if (bd == PROTECT) { |
| 1631 | nop(); |
| 1632 | } |
| 1633 | } |
| 1634 | } |
| 1635 | } |
| 1636 | |
| 1637 | if (target) { |
| 1638 | bool long_branch = |
| 1639 | target->is_bound() ? is_near(target) : is_trampoline_emitted(); |
| 1640 | if (long_branch) { |
| 1641 | Label skip; |
| 1642 | Condition neg_cond = NegateFpuCondition(cond); |
| 1643 | BranchShortF(sizeField, &skip, neg_cond, cmp1, cmp2, bd); |
| 1644 | BranchLong(target, bd); |
| 1645 | bind(&skip); |
| 1646 | } else { |
| 1647 | BranchShortF(sizeField, target, cond, cmp1, cmp2, bd); |
| 1648 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1649 | } |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1650 | } |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1651 | } |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1652 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1653 | void MacroAssembler::BranchShortF(SecondaryField sizeField, Label* target, |
| 1654 | Condition cc, FPURegister cmp1, |
| 1655 | FPURegister cmp2, BranchDelaySlot bd) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1656 | if (!IsMipsArchVariant(kMips32r6)) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1657 | BlockTrampolinePoolScope block_trampoline_pool(this); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1658 | if (target) { |
| 1659 | // Here NaN cases were either handled by this function or are assumed to |
| 1660 | // have been handled by the caller. |
| 1661 | switch (cc) { |
| 1662 | case lt: |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1663 | c(OLT, sizeField, cmp1, cmp2); |
| 1664 | bc1t(target); |
| 1665 | break; |
| 1666 | case ult: |
| 1667 | c(ULT, sizeField, cmp1, cmp2); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1668 | bc1t(target); |
| 1669 | break; |
| 1670 | case gt: |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1671 | c(ULE, sizeField, cmp1, cmp2); |
| 1672 | bc1f(target); |
| 1673 | break; |
| 1674 | case ugt: |
| 1675 | c(OLE, sizeField, cmp1, cmp2); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1676 | bc1f(target); |
| 1677 | break; |
| 1678 | case ge: |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1679 | c(ULT, sizeField, cmp1, cmp2); |
| 1680 | bc1f(target); |
| 1681 | break; |
| 1682 | case uge: |
| 1683 | c(OLT, sizeField, cmp1, cmp2); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1684 | bc1f(target); |
| 1685 | break; |
| 1686 | case le: |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1687 | c(OLE, sizeField, cmp1, cmp2); |
| 1688 | bc1t(target); |
| 1689 | break; |
| 1690 | case ule: |
| 1691 | c(ULE, sizeField, cmp1, cmp2); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1692 | bc1t(target); |
| 1693 | break; |
| 1694 | case eq: |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1695 | c(EQ, sizeField, cmp1, cmp2); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1696 | bc1t(target); |
| 1697 | break; |
| 1698 | case ueq: |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1699 | c(UEQ, sizeField, cmp1, cmp2); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1700 | bc1t(target); |
| 1701 | break; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1702 | case ne: // Unordered or not equal. |
| 1703 | c(EQ, sizeField, cmp1, cmp2); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1704 | bc1f(target); |
| 1705 | break; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1706 | case ogl: |
| 1707 | c(UEQ, sizeField, cmp1, cmp2); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1708 | bc1f(target); |
| 1709 | break; |
| 1710 | default: |
| 1711 | CHECK(0); |
| 1712 | } |
| 1713 | } |
| 1714 | } else { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1715 | BlockTrampolinePoolScope block_trampoline_pool(this); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1716 | if (target) { |
| 1717 | // Here NaN cases were either handled by this function or are assumed to |
| 1718 | // have been handled by the caller. |
| 1719 | // Unsigned conditions are treated as their signed counterpart. |
| 1720 | // Use kDoubleCompareReg for comparison result, it is |
| 1721 | // valid in fp64 (FR = 1) mode which is implied for mips32r6. |
| 1722 | DCHECK(!cmp1.is(kDoubleCompareReg) && !cmp2.is(kDoubleCompareReg)); |
| 1723 | switch (cc) { |
| 1724 | case lt: |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1725 | cmp(OLT, sizeField, kDoubleCompareReg, cmp1, cmp2); |
| 1726 | bc1nez(target, kDoubleCompareReg); |
| 1727 | break; |
| 1728 | case ult: |
| 1729 | cmp(ULT, sizeField, kDoubleCompareReg, cmp1, cmp2); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1730 | bc1nez(target, kDoubleCompareReg); |
| 1731 | break; |
| 1732 | case gt: |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1733 | cmp(ULE, sizeField, kDoubleCompareReg, cmp1, cmp2); |
| 1734 | bc1eqz(target, kDoubleCompareReg); |
| 1735 | break; |
| 1736 | case ugt: |
| 1737 | cmp(OLE, sizeField, kDoubleCompareReg, cmp1, cmp2); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1738 | bc1eqz(target, kDoubleCompareReg); |
| 1739 | break; |
| 1740 | case ge: |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1741 | cmp(ULT, sizeField, kDoubleCompareReg, cmp1, cmp2); |
| 1742 | bc1eqz(target, kDoubleCompareReg); |
| 1743 | break; |
| 1744 | case uge: |
| 1745 | cmp(OLT, sizeField, kDoubleCompareReg, cmp1, cmp2); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1746 | bc1eqz(target, kDoubleCompareReg); |
| 1747 | break; |
| 1748 | case le: |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1749 | cmp(OLE, sizeField, kDoubleCompareReg, cmp1, cmp2); |
| 1750 | bc1nez(target, kDoubleCompareReg); |
| 1751 | break; |
| 1752 | case ule: |
| 1753 | cmp(ULE, sizeField, kDoubleCompareReg, cmp1, cmp2); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1754 | bc1nez(target, kDoubleCompareReg); |
| 1755 | break; |
| 1756 | case eq: |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1757 | cmp(EQ, sizeField, kDoubleCompareReg, cmp1, cmp2); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1758 | bc1nez(target, kDoubleCompareReg); |
| 1759 | break; |
| 1760 | case ueq: |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1761 | cmp(UEQ, sizeField, kDoubleCompareReg, cmp1, cmp2); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1762 | bc1nez(target, kDoubleCompareReg); |
| 1763 | break; |
| 1764 | case ne: |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1765 | cmp(EQ, sizeField, kDoubleCompareReg, cmp1, cmp2); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1766 | bc1eqz(target, kDoubleCompareReg); |
| 1767 | break; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1768 | case ogl: |
| 1769 | cmp(UEQ, sizeField, kDoubleCompareReg, cmp1, cmp2); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1770 | bc1eqz(target, kDoubleCompareReg); |
| 1771 | break; |
| 1772 | default: |
| 1773 | CHECK(0); |
| 1774 | } |
| 1775 | } |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1776 | } |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1777 | if (bd == PROTECT) { |
| 1778 | nop(); |
| 1779 | } |
| 1780 | } |
| 1781 | |
| 1782 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1783 | void MacroAssembler::FmoveLow(FPURegister dst, Register src_low) { |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 1784 | if (IsFp32Mode()) { |
| 1785 | mtc1(src_low, dst); |
| 1786 | } else { |
| 1787 | DCHECK(IsFp64Mode() || IsFpxxMode()); |
| 1788 | DCHECK(IsMipsArchVariant(kMips32r2) || IsMipsArchVariant(kMips32r6)); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1789 | DCHECK(!src_low.is(at)); |
| 1790 | mfhc1(at, dst); |
| 1791 | mtc1(src_low, dst); |
| 1792 | mthc1(at, dst); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1793 | } |
| 1794 | } |
| 1795 | |
| 1796 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 1797 | void MacroAssembler::Move(FPURegister dst, float imm) { |
| 1798 | li(at, Operand(bit_cast<int32_t>(imm))); |
| 1799 | mtc1(at, dst); |
| 1800 | } |
| 1801 | |
| 1802 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1803 | void MacroAssembler::Move(FPURegister dst, double imm) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1804 | static const DoubleRepresentation minus_zero(-0.0); |
| 1805 | static const DoubleRepresentation zero(0.0); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1806 | DoubleRepresentation value_rep(imm); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1807 | // Handle special values first. |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 1808 | if (value_rep == zero && has_double_zero_reg_set_) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1809 | mov_d(dst, kDoubleRegZero); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 1810 | } else if (value_rep == minus_zero && has_double_zero_reg_set_) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1811 | neg_d(dst, kDoubleRegZero); |
| 1812 | } else { |
| 1813 | uint32_t lo, hi; |
| 1814 | DoubleAsTwoUInt32(imm, &lo, &hi); |
| 1815 | // Move the low part of the double into the lower of the corresponding FPU |
| 1816 | // register of FPU register pair. |
| 1817 | if (lo != 0) { |
| 1818 | li(at, Operand(lo)); |
| 1819 | mtc1(at, dst); |
| 1820 | } else { |
| 1821 | mtc1(zero_reg, dst); |
| 1822 | } |
| 1823 | // Move the high part of the double into the higher of the corresponding FPU |
| 1824 | // register of FPU register pair. |
| 1825 | if (hi != 0) { |
| 1826 | li(at, Operand(hi)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1827 | Mthc1(at, dst); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1828 | } else { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1829 | Mthc1(zero_reg, dst); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1830 | } |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 1831 | if (dst.is(kDoubleRegZero)) has_double_zero_reg_set_ = true; |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1832 | } |
| 1833 | } |
| 1834 | |
| 1835 | |
| 1836 | void MacroAssembler::Movz(Register rd, Register rs, Register rt) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1837 | if (IsMipsArchVariant(kLoongson) || IsMipsArchVariant(kMips32r6)) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1838 | Label done; |
| 1839 | Branch(&done, ne, rt, Operand(zero_reg)); |
| 1840 | mov(rd, rs); |
| 1841 | bind(&done); |
| 1842 | } else { |
| 1843 | movz(rd, rs, rt); |
| 1844 | } |
| 1845 | } |
| 1846 | |
| 1847 | |
| 1848 | void MacroAssembler::Movn(Register rd, Register rs, Register rt) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1849 | if (IsMipsArchVariant(kLoongson) || IsMipsArchVariant(kMips32r6)) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1850 | Label done; |
| 1851 | Branch(&done, eq, rt, Operand(zero_reg)); |
| 1852 | mov(rd, rs); |
| 1853 | bind(&done); |
| 1854 | } else { |
| 1855 | movn(rd, rs, rt); |
| 1856 | } |
| 1857 | } |
| 1858 | |
| 1859 | |
| 1860 | void MacroAssembler::Movt(Register rd, Register rs, uint16_t cc) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1861 | if (IsMipsArchVariant(kLoongson)) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1862 | // Tests an FP condition code and then conditionally move rs to rd. |
| 1863 | // 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] | 1864 | DCHECK(cc == 0); |
| 1865 | DCHECK(!(rs.is(t8) || rd.is(t8))); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1866 | Label done; |
| 1867 | Register scratch = t8; |
| 1868 | // For testing purposes we need to fetch content of the FCSR register and |
| 1869 | // than test its cc (floating point condition code) bit (for cc = 0, it is |
| 1870 | // 24. bit of the FCSR). |
| 1871 | cfc1(scratch, FCSR); |
| 1872 | // For the MIPS I, II and III architectures, the contents of scratch is |
| 1873 | // UNPREDICTABLE for the instruction immediately following CFC1. |
| 1874 | nop(); |
| 1875 | srl(scratch, scratch, 16); |
| 1876 | andi(scratch, scratch, 0x0080); |
| 1877 | Branch(&done, eq, scratch, Operand(zero_reg)); |
| 1878 | mov(rd, rs); |
| 1879 | bind(&done); |
| 1880 | } else { |
| 1881 | movt(rd, rs, cc); |
| 1882 | } |
| 1883 | } |
| 1884 | |
| 1885 | |
| 1886 | void MacroAssembler::Movf(Register rd, Register rs, uint16_t cc) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1887 | if (IsMipsArchVariant(kLoongson)) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1888 | // Tests an FP condition code and then conditionally move rs to rd. |
| 1889 | // 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] | 1890 | DCHECK(cc == 0); |
| 1891 | DCHECK(!(rs.is(t8) || rd.is(t8))); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1892 | Label done; |
| 1893 | Register scratch = t8; |
| 1894 | // For testing purposes we need to fetch content of the FCSR register and |
| 1895 | // than test its cc (floating point condition code) bit (for cc = 0, it is |
| 1896 | // 24. bit of the FCSR). |
| 1897 | cfc1(scratch, FCSR); |
| 1898 | // For the MIPS I, II and III architectures, the contents of scratch is |
| 1899 | // UNPREDICTABLE for the instruction immediately following CFC1. |
| 1900 | nop(); |
| 1901 | srl(scratch, scratch, 16); |
| 1902 | andi(scratch, scratch, 0x0080); |
| 1903 | Branch(&done, ne, scratch, Operand(zero_reg)); |
| 1904 | mov(rd, rs); |
| 1905 | bind(&done); |
| 1906 | } else { |
| 1907 | movf(rd, rs, cc); |
| 1908 | } |
| 1909 | } |
| 1910 | |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame^] | 1911 | #define __ masm-> |
| 1912 | |
| 1913 | static bool ZeroHelper_d(MacroAssembler* masm, MaxMinKind kind, FPURegister dst, |
| 1914 | FPURegister src1, FPURegister src2, Label* equal) { |
| 1915 | if (src1.is(src2)) { |
| 1916 | __ Move(dst, src1); |
| 1917 | return true; |
| 1918 | } |
| 1919 | |
| 1920 | Label other, compare_not_equal; |
| 1921 | FPURegister left, right; |
| 1922 | if (kind == MaxMinKind::kMin) { |
| 1923 | left = src1; |
| 1924 | right = src2; |
| 1925 | } else { |
| 1926 | left = src2; |
| 1927 | right = src1; |
| 1928 | } |
| 1929 | |
| 1930 | __ BranchF64(&compare_not_equal, nullptr, ne, src1, src2); |
| 1931 | // Left and right hand side are equal, check for -0 vs. +0. |
| 1932 | __ FmoveHigh(t8, src1); |
| 1933 | __ Branch(&other, eq, t8, Operand(0x80000000)); |
| 1934 | __ Move_d(dst, right); |
| 1935 | __ Branch(equal); |
| 1936 | __ bind(&other); |
| 1937 | __ Move_d(dst, left); |
| 1938 | __ Branch(equal); |
| 1939 | __ bind(&compare_not_equal); |
| 1940 | return false; |
| 1941 | } |
| 1942 | |
| 1943 | static bool ZeroHelper_s(MacroAssembler* masm, MaxMinKind kind, FPURegister dst, |
| 1944 | FPURegister src1, FPURegister src2, Label* equal) { |
| 1945 | if (src1.is(src2)) { |
| 1946 | __ Move(dst, src1); |
| 1947 | return true; |
| 1948 | } |
| 1949 | |
| 1950 | Label other, compare_not_equal; |
| 1951 | FPURegister left, right; |
| 1952 | if (kind == MaxMinKind::kMin) { |
| 1953 | left = src1; |
| 1954 | right = src2; |
| 1955 | } else { |
| 1956 | left = src2; |
| 1957 | right = src1; |
| 1958 | } |
| 1959 | |
| 1960 | __ BranchF32(&compare_not_equal, nullptr, ne, src1, src2); |
| 1961 | // Left and right hand side are equal, check for -0 vs. +0. |
| 1962 | __ FmoveLow(t8, src1); |
| 1963 | __ Branch(&other, eq, t8, Operand(0x80000000)); |
| 1964 | __ Move_s(dst, right); |
| 1965 | __ Branch(equal); |
| 1966 | __ bind(&other); |
| 1967 | __ Move_s(dst, left); |
| 1968 | __ Branch(equal); |
| 1969 | __ bind(&compare_not_equal); |
| 1970 | return false; |
| 1971 | } |
| 1972 | |
| 1973 | #undef __ |
| 1974 | |
| 1975 | void MacroAssembler::MinNaNCheck_d(FPURegister dst, FPURegister src1, |
| 1976 | FPURegister src2, Label* nan) { |
| 1977 | if (nan) { |
| 1978 | BranchF64(nullptr, nan, eq, src1, src2); |
| 1979 | } |
| 1980 | if (IsMipsArchVariant(kMips32r6)) { |
| 1981 | min_d(dst, src1, src2); |
| 1982 | } else { |
| 1983 | Label skip; |
| 1984 | if (!ZeroHelper_d(this, MaxMinKind::kMin, dst, src1, src2, &skip)) { |
| 1985 | if (dst.is(src1)) { |
| 1986 | BranchF64(&skip, nullptr, le, src1, src2); |
| 1987 | Move_d(dst, src2); |
| 1988 | } else if (dst.is(src2)) { |
| 1989 | BranchF64(&skip, nullptr, ge, src1, src2); |
| 1990 | Move_d(dst, src1); |
| 1991 | } else { |
| 1992 | Label right; |
| 1993 | BranchF64(&right, nullptr, gt, src1, src2); |
| 1994 | Move_d(dst, src1); |
| 1995 | Branch(&skip); |
| 1996 | bind(&right); |
| 1997 | Move_d(dst, src2); |
| 1998 | } |
| 1999 | } |
| 2000 | bind(&skip); |
| 2001 | } |
| 2002 | } |
| 2003 | |
| 2004 | void MacroAssembler::MaxNaNCheck_d(FPURegister dst, FPURegister src1, |
| 2005 | FPURegister src2, Label* nan) { |
| 2006 | if (nan) { |
| 2007 | BranchF64(nullptr, nan, eq, src1, src2); |
| 2008 | } |
| 2009 | if (IsMipsArchVariant(kMips32r6)) { |
| 2010 | max_d(dst, src1, src2); |
| 2011 | } else { |
| 2012 | Label skip; |
| 2013 | if (!ZeroHelper_d(this, MaxMinKind::kMax, dst, src1, src2, &skip)) { |
| 2014 | if (dst.is(src1)) { |
| 2015 | BranchF64(&skip, nullptr, ge, src1, src2); |
| 2016 | Move_d(dst, src2); |
| 2017 | } else if (dst.is(src2)) { |
| 2018 | BranchF64(&skip, nullptr, le, src1, src2); |
| 2019 | Move_d(dst, src1); |
| 2020 | } else { |
| 2021 | Label right; |
| 2022 | BranchF64(&right, nullptr, lt, src1, src2); |
| 2023 | Move_d(dst, src1); |
| 2024 | Branch(&skip); |
| 2025 | bind(&right); |
| 2026 | Move_d(dst, src2); |
| 2027 | } |
| 2028 | } |
| 2029 | bind(&skip); |
| 2030 | } |
| 2031 | } |
| 2032 | |
| 2033 | void MacroAssembler::MinNaNCheck_s(FPURegister dst, FPURegister src1, |
| 2034 | FPURegister src2, Label* nan) { |
| 2035 | if (nan) { |
| 2036 | BranchF32(nullptr, nan, eq, src1, src2); |
| 2037 | } |
| 2038 | if (IsMipsArchVariant(kMips32r6)) { |
| 2039 | min_s(dst, src1, src2); |
| 2040 | } else { |
| 2041 | Label skip; |
| 2042 | if (!ZeroHelper_s(this, MaxMinKind::kMin, dst, src1, src2, &skip)) { |
| 2043 | if (dst.is(src1)) { |
| 2044 | BranchF32(&skip, nullptr, le, src1, src2); |
| 2045 | Move_s(dst, src2); |
| 2046 | } else if (dst.is(src2)) { |
| 2047 | BranchF32(&skip, nullptr, ge, src1, src2); |
| 2048 | Move_s(dst, src1); |
| 2049 | } else { |
| 2050 | Label right; |
| 2051 | BranchF32(&right, nullptr, gt, src1, src2); |
| 2052 | Move_s(dst, src1); |
| 2053 | Branch(&skip); |
| 2054 | bind(&right); |
| 2055 | Move_s(dst, src2); |
| 2056 | } |
| 2057 | } |
| 2058 | bind(&skip); |
| 2059 | } |
| 2060 | } |
| 2061 | |
| 2062 | void MacroAssembler::MaxNaNCheck_s(FPURegister dst, FPURegister src1, |
| 2063 | FPURegister src2, Label* nan) { |
| 2064 | if (nan) { |
| 2065 | BranchF32(nullptr, nan, eq, src1, src2); |
| 2066 | } |
| 2067 | if (IsMipsArchVariant(kMips32r6)) { |
| 2068 | max_s(dst, src1, src2); |
| 2069 | } else { |
| 2070 | Label skip; |
| 2071 | if (!ZeroHelper_s(this, MaxMinKind::kMax, dst, src1, src2, &skip)) { |
| 2072 | if (dst.is(src1)) { |
| 2073 | BranchF32(&skip, nullptr, ge, src1, src2); |
| 2074 | Move_s(dst, src2); |
| 2075 | } else if (dst.is(src2)) { |
| 2076 | BranchF32(&skip, nullptr, le, src1, src2); |
| 2077 | Move_s(dst, src1); |
| 2078 | } else { |
| 2079 | Label right; |
| 2080 | BranchF32(&right, nullptr, lt, src1, src2); |
| 2081 | Move_s(dst, src1); |
| 2082 | Branch(&skip); |
| 2083 | bind(&right); |
| 2084 | Move_s(dst, src2); |
| 2085 | } |
| 2086 | } |
| 2087 | bind(&skip); |
| 2088 | } |
| 2089 | } |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2090 | |
| 2091 | void MacroAssembler::Clz(Register rd, Register rs) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2092 | if (IsMipsArchVariant(kLoongson)) { |
| 2093 | 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] | 2094 | Register mask = t8; |
| 2095 | Register scratch = t9; |
| 2096 | Label loop, end; |
| 2097 | mov(at, rs); |
| 2098 | mov(rd, zero_reg); |
| 2099 | lui(mask, 0x8000); |
| 2100 | bind(&loop); |
| 2101 | and_(scratch, at, mask); |
| 2102 | Branch(&end, ne, scratch, Operand(zero_reg)); |
| 2103 | addiu(rd, rd, 1); |
| 2104 | Branch(&loop, ne, mask, Operand(zero_reg), USE_DELAY_SLOT); |
| 2105 | srl(mask, mask, 1); |
| 2106 | bind(&end); |
| 2107 | } else { |
| 2108 | clz(rd, rs); |
| 2109 | } |
| 2110 | } |
| 2111 | |
| 2112 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2113 | void MacroAssembler::EmitFPUTruncate(FPURoundingMode rounding_mode, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2114 | Register result, |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2115 | DoubleRegister double_input, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2116 | Register scratch, |
| 2117 | DoubleRegister double_scratch, |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2118 | Register except_flag, |
| 2119 | CheckForInexactConversion check_inexact) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2120 | DCHECK(!result.is(scratch)); |
| 2121 | DCHECK(!double_input.is(double_scratch)); |
| 2122 | DCHECK(!except_flag.is(scratch)); |
| 2123 | |
| 2124 | Label done; |
| 2125 | |
| 2126 | // Clear the except flag (0 = no exception) |
| 2127 | mov(except_flag, zero_reg); |
| 2128 | |
| 2129 | // Test for values that can be exactly represented as a signed 32-bit integer. |
| 2130 | cvt_w_d(double_scratch, double_input); |
| 2131 | mfc1(result, double_scratch); |
| 2132 | cvt_d_w(double_scratch, double_scratch); |
| 2133 | BranchF(&done, NULL, eq, double_input, double_scratch); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2134 | |
| 2135 | int32_t except_mask = kFCSRFlagMask; // Assume interested in all exceptions. |
| 2136 | |
| 2137 | if (check_inexact == kDontCheckForInexactConversion) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2138 | // Ignore inexact exceptions. |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2139 | except_mask &= ~kFCSRInexactFlagMask; |
| 2140 | } |
| 2141 | |
| 2142 | // Save FCSR. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2143 | cfc1(scratch, FCSR); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2144 | // Disable FPU exceptions. |
| 2145 | ctc1(zero_reg, FCSR); |
| 2146 | |
| 2147 | // Do operation based on rounding mode. |
| 2148 | switch (rounding_mode) { |
| 2149 | case kRoundToNearest: |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2150 | Round_w_d(double_scratch, double_input); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2151 | break; |
| 2152 | case kRoundToZero: |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2153 | Trunc_w_d(double_scratch, double_input); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2154 | break; |
| 2155 | case kRoundToPlusInf: |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2156 | Ceil_w_d(double_scratch, double_input); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2157 | break; |
| 2158 | case kRoundToMinusInf: |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2159 | Floor_w_d(double_scratch, double_input); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2160 | break; |
| 2161 | } // End of switch-statement. |
| 2162 | |
| 2163 | // Retrieve FCSR. |
| 2164 | cfc1(except_flag, FCSR); |
| 2165 | // Restore FCSR. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2166 | ctc1(scratch, FCSR); |
| 2167 | // Move the converted value into the result register. |
| 2168 | mfc1(result, double_scratch); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2169 | |
| 2170 | // Check for fpu exceptions. |
| 2171 | And(except_flag, except_flag, Operand(except_mask)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2172 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2173 | bind(&done); |
| 2174 | } |
| 2175 | |
| 2176 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2177 | void MacroAssembler::TryInlineTruncateDoubleToI(Register result, |
| 2178 | DoubleRegister double_input, |
| 2179 | Label* done) { |
| 2180 | DoubleRegister single_scratch = kLithiumScratchDouble.low(); |
| 2181 | Register scratch = at; |
| 2182 | Register scratch2 = t9; |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 2183 | |
| 2184 | // Clear cumulative exception flags and save the FCSR. |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 2185 | cfc1(scratch2, FCSR); |
| 2186 | ctc1(zero_reg, FCSR); |
| 2187 | // Try a conversion to a signed integer. |
| 2188 | trunc_w_d(single_scratch, double_input); |
| 2189 | mfc1(result, single_scratch); |
| 2190 | // Retrieve and restore the FCSR. |
| 2191 | cfc1(scratch, FCSR); |
| 2192 | ctc1(scratch2, FCSR); |
| 2193 | // Check for overflow and NaNs. |
| 2194 | And(scratch, |
| 2195 | scratch, |
| 2196 | kFCSROverflowFlagMask | kFCSRUnderflowFlagMask | kFCSRInvalidOpFlagMask); |
| 2197 | // If we had no exceptions we are done. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2198 | Branch(done, eq, scratch, Operand(zero_reg)); |
| 2199 | } |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 2200 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2201 | |
| 2202 | void MacroAssembler::TruncateDoubleToI(Register result, |
| 2203 | DoubleRegister double_input) { |
| 2204 | Label done; |
| 2205 | |
| 2206 | TryInlineTruncateDoubleToI(result, double_input, &done); |
| 2207 | |
| 2208 | // If we fell through then inline version didn't succeed - call stub instead. |
| 2209 | push(ra); |
| 2210 | Subu(sp, sp, Operand(kDoubleSize)); // Put input on stack. |
| 2211 | sdc1(double_input, MemOperand(sp, 0)); |
| 2212 | |
| 2213 | DoubleToIStub stub(isolate(), sp, result, 0, true, true); |
| 2214 | CallStub(&stub); |
| 2215 | |
| 2216 | Addu(sp, sp, Operand(kDoubleSize)); |
| 2217 | pop(ra); |
| 2218 | |
| 2219 | bind(&done); |
| 2220 | } |
| 2221 | |
| 2222 | |
| 2223 | void MacroAssembler::TruncateHeapNumberToI(Register result, Register object) { |
| 2224 | Label done; |
| 2225 | DoubleRegister double_scratch = f12; |
| 2226 | DCHECK(!result.is(object)); |
| 2227 | |
| 2228 | ldc1(double_scratch, |
| 2229 | MemOperand(object, HeapNumber::kValueOffset - kHeapObjectTag)); |
| 2230 | TryInlineTruncateDoubleToI(result, double_scratch, &done); |
| 2231 | |
| 2232 | // If we fell through then inline version didn't succeed - call stub instead. |
| 2233 | push(ra); |
| 2234 | DoubleToIStub stub(isolate(), |
| 2235 | object, |
| 2236 | result, |
| 2237 | HeapNumber::kValueOffset - kHeapObjectTag, |
| 2238 | true, |
| 2239 | true); |
| 2240 | CallStub(&stub); |
| 2241 | pop(ra); |
| 2242 | |
| 2243 | bind(&done); |
| 2244 | } |
| 2245 | |
| 2246 | |
| 2247 | void MacroAssembler::TruncateNumberToI(Register object, |
| 2248 | Register result, |
| 2249 | Register heap_number_map, |
| 2250 | Register scratch, |
| 2251 | Label* not_number) { |
| 2252 | Label done; |
| 2253 | DCHECK(!result.is(object)); |
| 2254 | |
| 2255 | UntagAndJumpIfSmi(result, object, &done); |
| 2256 | JumpIfNotHeapNumber(object, heap_number_map, scratch, not_number); |
| 2257 | TruncateHeapNumberToI(result, object); |
| 2258 | |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 2259 | bind(&done); |
| 2260 | } |
| 2261 | |
| 2262 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2263 | void MacroAssembler::GetLeastBitsFromSmi(Register dst, |
| 2264 | Register src, |
| 2265 | int num_least_bits) { |
| 2266 | Ext(dst, src, kSmiTagSize, num_least_bits); |
| 2267 | } |
| 2268 | |
| 2269 | |
| 2270 | void MacroAssembler::GetLeastBitsFromInt32(Register dst, |
| 2271 | Register src, |
| 2272 | int num_least_bits) { |
| 2273 | And(dst, src, Operand((1 << num_least_bits) - 1)); |
| 2274 | } |
| 2275 | |
| 2276 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2277 | // Emulated condtional branches do not emit a nop in the branch delay slot. |
| 2278 | // |
| 2279 | // BRANCH_ARGS_CHECK checks that conditional jump arguments are correct. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2280 | #define BRANCH_ARGS_CHECK(cond, rs, rt) DCHECK( \ |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2281 | (cond == cc_always && rs.is(zero_reg) && rt.rm().is(zero_reg)) || \ |
| 2282 | (cond != cc_always && (!rs.is(zero_reg) || !rt.rm().is(zero_reg)))) |
| 2283 | |
| 2284 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2285 | void MacroAssembler::Branch(int32_t offset, BranchDelaySlot bdslot) { |
| 2286 | DCHECK(IsMipsArchVariant(kMips32r6) ? is_int26(offset) : is_int16(offset)); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 2287 | BranchShort(offset, bdslot); |
| 2288 | } |
| 2289 | |
| 2290 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2291 | void MacroAssembler::Branch(int32_t offset, Condition cond, Register rs, |
| 2292 | const Operand& rt, BranchDelaySlot bdslot) { |
| 2293 | bool is_near = BranchShortCheck(offset, nullptr, cond, rs, rt, bdslot); |
| 2294 | DCHECK(is_near); |
| 2295 | USE(is_near); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 2296 | } |
| 2297 | |
| 2298 | |
| 2299 | void MacroAssembler::Branch(Label* L, BranchDelaySlot bdslot) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2300 | if (L->is_bound()) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2301 | if (is_near_branch(L)) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2302 | BranchShort(L, bdslot); |
| 2303 | } else { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2304 | BranchLong(L, bdslot); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2305 | } |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 2306 | } else { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2307 | if (is_trampoline_emitted()) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2308 | BranchLong(L, bdslot); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2309 | } else { |
| 2310 | BranchShort(L, bdslot); |
| 2311 | } |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 2312 | } |
| 2313 | } |
| 2314 | |
| 2315 | |
| 2316 | void MacroAssembler::Branch(Label* L, Condition cond, Register rs, |
| 2317 | const Operand& rt, |
| 2318 | BranchDelaySlot bdslot) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2319 | if (L->is_bound()) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2320 | if (!BranchShortCheck(0, L, cond, rs, rt, bdslot)) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2321 | if (cond != cc_always) { |
| 2322 | Label skip; |
| 2323 | Condition neg_cond = NegateCondition(cond); |
| 2324 | BranchShort(&skip, neg_cond, rs, rt); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2325 | BranchLong(L, bdslot); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2326 | bind(&skip); |
| 2327 | } else { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2328 | BranchLong(L, bdslot); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2329 | } |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2330 | } |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 2331 | } else { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2332 | if (is_trampoline_emitted()) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2333 | if (cond != cc_always) { |
| 2334 | Label skip; |
| 2335 | Condition neg_cond = NegateCondition(cond); |
| 2336 | BranchShort(&skip, neg_cond, rs, rt); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2337 | BranchLong(L, bdslot); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2338 | bind(&skip); |
| 2339 | } else { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2340 | BranchLong(L, bdslot); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2341 | } |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2342 | } else { |
| 2343 | BranchShort(L, cond, rs, rt, bdslot); |
| 2344 | } |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 2345 | } |
| 2346 | } |
| 2347 | |
| 2348 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2349 | void MacroAssembler::Branch(Label* L, |
| 2350 | Condition cond, |
| 2351 | Register rs, |
| 2352 | Heap::RootListIndex index, |
| 2353 | BranchDelaySlot bdslot) { |
| 2354 | LoadRoot(at, index); |
| 2355 | Branch(L, cond, rs, Operand(at), bdslot); |
| 2356 | } |
| 2357 | |
| 2358 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2359 | void MacroAssembler::BranchShortHelper(int16_t offset, Label* L, |
| 2360 | BranchDelaySlot bdslot) { |
| 2361 | DCHECK(L == nullptr || offset == 0); |
| 2362 | offset = GetOffset(offset, L, OffsetSize::kOffset16); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2363 | b(offset); |
| 2364 | |
| 2365 | // Emit a nop in the branch delay slot if required. |
| 2366 | if (bdslot == PROTECT) |
| 2367 | nop(); |
| 2368 | } |
| 2369 | |
| 2370 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2371 | void MacroAssembler::BranchShortHelperR6(int32_t offset, Label* L) { |
| 2372 | DCHECK(L == nullptr || offset == 0); |
| 2373 | offset = GetOffset(offset, L, OffsetSize::kOffset26); |
| 2374 | bc(offset); |
| 2375 | } |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2376 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2377 | |
| 2378 | void MacroAssembler::BranchShort(int32_t offset, BranchDelaySlot bdslot) { |
| 2379 | if (IsMipsArchVariant(kMips32r6) && bdslot == PROTECT) { |
| 2380 | DCHECK(is_int26(offset)); |
| 2381 | BranchShortHelperR6(offset, nullptr); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2382 | } else { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2383 | DCHECK(is_int16(offset)); |
| 2384 | BranchShortHelper(offset, nullptr, bdslot); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 2385 | } |
| 2386 | } |
| 2387 | |
| 2388 | |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 2389 | void MacroAssembler::BranchShort(Label* L, BranchDelaySlot bdslot) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2390 | if (IsMipsArchVariant(kMips32r6) && bdslot == PROTECT) { |
| 2391 | BranchShortHelperR6(0, L); |
| 2392 | } else { |
| 2393 | BranchShortHelper(0, L, bdslot); |
| 2394 | } |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 2395 | } |
| 2396 | |
| 2397 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2398 | static inline bool IsZero(const Operand& rt) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2399 | if (rt.is_reg()) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2400 | return rt.rm().is(zero_reg); |
| 2401 | } else { |
| 2402 | return rt.immediate() == 0; |
| 2403 | } |
| 2404 | } |
| 2405 | |
| 2406 | |
| 2407 | int32_t MacroAssembler::GetOffset(int32_t offset, Label* L, OffsetSize bits) { |
| 2408 | if (L) { |
| 2409 | offset = branch_offset_helper(L, bits) >> 2; |
| 2410 | } else { |
| 2411 | DCHECK(is_intn(offset, bits)); |
| 2412 | } |
| 2413 | return offset; |
| 2414 | } |
| 2415 | |
| 2416 | |
| 2417 | Register MacroAssembler::GetRtAsRegisterHelper(const Operand& rt, |
| 2418 | Register scratch) { |
| 2419 | Register r2 = no_reg; |
| 2420 | if (rt.is_reg()) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2421 | r2 = rt.rm_; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2422 | } else { |
| 2423 | r2 = scratch; |
| 2424 | li(r2, rt); |
| 2425 | } |
| 2426 | |
| 2427 | return r2; |
| 2428 | } |
| 2429 | |
| 2430 | |
| 2431 | bool MacroAssembler::BranchShortHelperR6(int32_t offset, Label* L, |
| 2432 | Condition cond, Register rs, |
| 2433 | const Operand& rt) { |
| 2434 | DCHECK(L == nullptr || offset == 0); |
| 2435 | Register scratch = rs.is(at) ? t8 : at; |
| 2436 | OffsetSize bits = OffsetSize::kOffset16; |
| 2437 | |
| 2438 | // Be careful to always use shifted_branch_offset only just before the |
| 2439 | // branch instruction, as the location will be remember for patching the |
| 2440 | // target. |
| 2441 | { |
| 2442 | BlockTrampolinePoolScope block_trampoline_pool(this); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2443 | switch (cond) { |
| 2444 | case cc_always: |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2445 | bits = OffsetSize::kOffset26; |
| 2446 | if (!is_near(L, bits)) return false; |
| 2447 | offset = GetOffset(offset, L, bits); |
| 2448 | bc(offset); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2449 | break; |
| 2450 | case eq: |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2451 | if (rs.code() == rt.rm_.reg_code) { |
| 2452 | // Pre R6 beq is used here to make the code patchable. Otherwise bc |
| 2453 | // should be used which has no condition field so is not patchable. |
| 2454 | bits = OffsetSize::kOffset16; |
| 2455 | if (!is_near(L, bits)) return false; |
| 2456 | scratch = GetRtAsRegisterHelper(rt, scratch); |
| 2457 | offset = GetOffset(offset, L, bits); |
| 2458 | beq(rs, scratch, offset); |
| 2459 | nop(); |
| 2460 | } else if (IsZero(rt)) { |
| 2461 | bits = OffsetSize::kOffset21; |
| 2462 | if (!is_near(L, bits)) return false; |
| 2463 | offset = GetOffset(offset, L, bits); |
| 2464 | beqzc(rs, offset); |
| 2465 | } else { |
| 2466 | // We don't want any other register but scratch clobbered. |
| 2467 | bits = OffsetSize::kOffset16; |
| 2468 | if (!is_near(L, bits)) return false; |
| 2469 | scratch = GetRtAsRegisterHelper(rt, scratch); |
| 2470 | offset = GetOffset(offset, L, bits); |
| 2471 | beqc(rs, scratch, offset); |
| 2472 | } |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2473 | break; |
| 2474 | case ne: |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2475 | if (rs.code() == rt.rm_.reg_code) { |
| 2476 | // Pre R6 bne is used here to make the code patchable. Otherwise we |
| 2477 | // should not generate any instruction. |
| 2478 | bits = OffsetSize::kOffset16; |
| 2479 | if (!is_near(L, bits)) return false; |
| 2480 | scratch = GetRtAsRegisterHelper(rt, scratch); |
| 2481 | offset = GetOffset(offset, L, bits); |
| 2482 | bne(rs, scratch, offset); |
| 2483 | nop(); |
| 2484 | } else if (IsZero(rt)) { |
| 2485 | bits = OffsetSize::kOffset21; |
| 2486 | if (!is_near(L, bits)) return false; |
| 2487 | offset = GetOffset(offset, L, bits); |
| 2488 | bnezc(rs, offset); |
| 2489 | } else { |
| 2490 | // We don't want any other register but scratch clobbered. |
| 2491 | bits = OffsetSize::kOffset16; |
| 2492 | if (!is_near(L, bits)) return false; |
| 2493 | scratch = GetRtAsRegisterHelper(rt, scratch); |
| 2494 | offset = GetOffset(offset, L, bits); |
| 2495 | bnec(rs, scratch, offset); |
| 2496 | } |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2497 | break; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2498 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2499 | // Signed comparison. |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2500 | case greater: |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2501 | // rs > rt |
| 2502 | if (rs.code() == rt.rm_.reg_code) { |
| 2503 | break; // No code needs to be emitted. |
| 2504 | } else if (rs.is(zero_reg)) { |
| 2505 | bits = OffsetSize::kOffset16; |
| 2506 | if (!is_near(L, bits)) return false; |
| 2507 | scratch = GetRtAsRegisterHelper(rt, scratch); |
| 2508 | offset = GetOffset(offset, L, bits); |
| 2509 | bltzc(scratch, offset); |
| 2510 | } else if (IsZero(rt)) { |
| 2511 | bits = OffsetSize::kOffset16; |
| 2512 | if (!is_near(L, bits)) return false; |
| 2513 | offset = GetOffset(offset, L, bits); |
| 2514 | bgtzc(rs, offset); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2515 | } else { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2516 | bits = OffsetSize::kOffset16; |
| 2517 | if (!is_near(L, bits)) return false; |
| 2518 | scratch = GetRtAsRegisterHelper(rt, scratch); |
| 2519 | DCHECK(!rs.is(scratch)); |
| 2520 | offset = GetOffset(offset, L, bits); |
| 2521 | bltc(scratch, rs, offset); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2522 | } |
| 2523 | break; |
| 2524 | case greater_equal: |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2525 | // rs >= rt |
| 2526 | if (rs.code() == rt.rm_.reg_code) { |
| 2527 | bits = OffsetSize::kOffset26; |
| 2528 | if (!is_near(L, bits)) return false; |
| 2529 | offset = GetOffset(offset, L, bits); |
| 2530 | bc(offset); |
| 2531 | } else if (rs.is(zero_reg)) { |
| 2532 | bits = OffsetSize::kOffset16; |
| 2533 | if (!is_near(L, bits)) return false; |
| 2534 | scratch = GetRtAsRegisterHelper(rt, scratch); |
| 2535 | offset = GetOffset(offset, L, bits); |
| 2536 | blezc(scratch, offset); |
| 2537 | } else if (IsZero(rt)) { |
| 2538 | bits = OffsetSize::kOffset16; |
| 2539 | if (!is_near(L, bits)) return false; |
| 2540 | offset = GetOffset(offset, L, bits); |
| 2541 | bgezc(rs, offset); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2542 | } else { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2543 | bits = OffsetSize::kOffset16; |
| 2544 | if (!is_near(L, bits)) return false; |
| 2545 | scratch = GetRtAsRegisterHelper(rt, scratch); |
| 2546 | DCHECK(!rs.is(scratch)); |
| 2547 | offset = GetOffset(offset, L, bits); |
| 2548 | bgec(rs, scratch, offset); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2549 | } |
| 2550 | break; |
| 2551 | case less: |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2552 | // rs < rt |
| 2553 | if (rs.code() == rt.rm_.reg_code) { |
| 2554 | break; // No code needs to be emitted. |
| 2555 | } else if (rs.is(zero_reg)) { |
| 2556 | bits = OffsetSize::kOffset16; |
| 2557 | if (!is_near(L, bits)) return false; |
| 2558 | scratch = GetRtAsRegisterHelper(rt, scratch); |
| 2559 | offset = GetOffset(offset, L, bits); |
| 2560 | bgtzc(scratch, offset); |
| 2561 | } else if (IsZero(rt)) { |
| 2562 | bits = OffsetSize::kOffset16; |
| 2563 | if (!is_near(L, bits)) return false; |
| 2564 | offset = GetOffset(offset, L, bits); |
| 2565 | bltzc(rs, offset); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2566 | } else { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2567 | bits = OffsetSize::kOffset16; |
| 2568 | if (!is_near(L, bits)) return false; |
| 2569 | scratch = GetRtAsRegisterHelper(rt, scratch); |
| 2570 | DCHECK(!rs.is(scratch)); |
| 2571 | offset = GetOffset(offset, L, bits); |
| 2572 | bltc(rs, scratch, offset); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2573 | } |
| 2574 | break; |
| 2575 | case less_equal: |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2576 | // rs <= rt |
| 2577 | if (rs.code() == rt.rm_.reg_code) { |
| 2578 | bits = OffsetSize::kOffset26; |
| 2579 | if (!is_near(L, bits)) return false; |
| 2580 | offset = GetOffset(offset, L, bits); |
| 2581 | bc(offset); |
| 2582 | } else if (rs.is(zero_reg)) { |
| 2583 | bits = OffsetSize::kOffset16; |
| 2584 | if (!is_near(L, bits)) return false; |
| 2585 | scratch = GetRtAsRegisterHelper(rt, scratch); |
| 2586 | offset = GetOffset(offset, L, bits); |
| 2587 | bgezc(scratch, offset); |
| 2588 | } else if (IsZero(rt)) { |
| 2589 | bits = OffsetSize::kOffset16; |
| 2590 | if (!is_near(L, bits)) return false; |
| 2591 | offset = GetOffset(offset, L, bits); |
| 2592 | blezc(rs, offset); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2593 | } else { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2594 | bits = OffsetSize::kOffset16; |
| 2595 | if (!is_near(L, bits)) return false; |
| 2596 | scratch = GetRtAsRegisterHelper(rt, scratch); |
| 2597 | DCHECK(!rs.is(scratch)); |
| 2598 | offset = GetOffset(offset, L, bits); |
| 2599 | bgec(scratch, rs, offset); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2600 | } |
| 2601 | break; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2602 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2603 | // Unsigned comparison. |
| 2604 | case Ugreater: |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2605 | // rs > rt |
| 2606 | if (rs.code() == rt.rm_.reg_code) { |
| 2607 | break; // No code needs to be emitted. |
| 2608 | } else if (rs.is(zero_reg)) { |
| 2609 | bits = OffsetSize::kOffset21; |
| 2610 | if (!is_near(L, bits)) return false; |
| 2611 | scratch = GetRtAsRegisterHelper(rt, scratch); |
| 2612 | offset = GetOffset(offset, L, bits); |
| 2613 | bnezc(scratch, offset); |
| 2614 | } else if (IsZero(rt)) { |
| 2615 | bits = OffsetSize::kOffset21; |
| 2616 | if (!is_near(L, bits)) return false; |
| 2617 | offset = GetOffset(offset, L, bits); |
| 2618 | bnezc(rs, offset); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2619 | } else { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2620 | bits = OffsetSize::kOffset16; |
| 2621 | if (!is_near(L, bits)) return false; |
| 2622 | scratch = GetRtAsRegisterHelper(rt, scratch); |
| 2623 | DCHECK(!rs.is(scratch)); |
| 2624 | offset = GetOffset(offset, L, bits); |
| 2625 | bltuc(scratch, rs, offset); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2626 | } |
| 2627 | break; |
| 2628 | case Ugreater_equal: |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2629 | // rs >= rt |
| 2630 | if (rs.code() == rt.rm_.reg_code) { |
| 2631 | bits = OffsetSize::kOffset26; |
| 2632 | if (!is_near(L, bits)) return false; |
| 2633 | offset = GetOffset(offset, L, bits); |
| 2634 | bc(offset); |
| 2635 | } else if (rs.is(zero_reg)) { |
| 2636 | bits = OffsetSize::kOffset21; |
| 2637 | if (!is_near(L, bits)) return false; |
| 2638 | scratch = GetRtAsRegisterHelper(rt, scratch); |
| 2639 | offset = GetOffset(offset, L, bits); |
| 2640 | beqzc(scratch, offset); |
| 2641 | } else if (IsZero(rt)) { |
| 2642 | bits = OffsetSize::kOffset26; |
| 2643 | if (!is_near(L, bits)) return false; |
| 2644 | offset = GetOffset(offset, L, bits); |
| 2645 | bc(offset); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2646 | } else { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2647 | bits = OffsetSize::kOffset16; |
| 2648 | if (!is_near(L, bits)) return false; |
| 2649 | scratch = GetRtAsRegisterHelper(rt, scratch); |
| 2650 | DCHECK(!rs.is(scratch)); |
| 2651 | offset = GetOffset(offset, L, bits); |
| 2652 | bgeuc(rs, scratch, offset); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2653 | } |
| 2654 | break; |
| 2655 | case Uless: |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2656 | // rs < rt |
| 2657 | if (rs.code() == rt.rm_.reg_code) { |
| 2658 | break; // No code needs to be emitted. |
| 2659 | } else if (rs.is(zero_reg)) { |
| 2660 | bits = OffsetSize::kOffset21; |
| 2661 | if (!is_near(L, bits)) return false; |
| 2662 | scratch = GetRtAsRegisterHelper(rt, scratch); |
| 2663 | offset = GetOffset(offset, L, bits); |
| 2664 | bnezc(scratch, offset); |
| 2665 | } else if (IsZero(rt)) { |
| 2666 | break; // No code needs to be emitted. |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2667 | } else { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2668 | bits = OffsetSize::kOffset16; |
| 2669 | if (!is_near(L, bits)) return false; |
| 2670 | scratch = GetRtAsRegisterHelper(rt, scratch); |
| 2671 | DCHECK(!rs.is(scratch)); |
| 2672 | offset = GetOffset(offset, L, bits); |
| 2673 | bltuc(rs, scratch, offset); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2674 | } |
| 2675 | break; |
| 2676 | case Uless_equal: |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2677 | // rs <= rt |
| 2678 | if (rs.code() == rt.rm_.reg_code) { |
| 2679 | bits = OffsetSize::kOffset26; |
| 2680 | if (!is_near(L, bits)) return false; |
| 2681 | offset = GetOffset(offset, L, bits); |
| 2682 | bc(offset); |
| 2683 | } else if (rs.is(zero_reg)) { |
| 2684 | bits = OffsetSize::kOffset26; |
| 2685 | if (!is_near(L, bits)) return false; |
| 2686 | scratch = GetRtAsRegisterHelper(rt, scratch); |
| 2687 | offset = GetOffset(offset, L, bits); |
| 2688 | bc(offset); |
| 2689 | } else if (IsZero(rt)) { |
| 2690 | bits = OffsetSize::kOffset21; |
| 2691 | if (!is_near(L, bits)) return false; |
| 2692 | offset = GetOffset(offset, L, bits); |
| 2693 | beqzc(rs, offset); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2694 | } else { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2695 | bits = OffsetSize::kOffset16; |
| 2696 | if (!is_near(L, bits)) return false; |
| 2697 | scratch = GetRtAsRegisterHelper(rt, scratch); |
| 2698 | DCHECK(!rs.is(scratch)); |
| 2699 | offset = GetOffset(offset, L, bits); |
| 2700 | bgeuc(scratch, rs, offset); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2701 | } |
| 2702 | break; |
| 2703 | default: |
| 2704 | UNREACHABLE(); |
| 2705 | } |
| 2706 | } |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2707 | CheckTrampolinePoolQuick(1); |
| 2708 | return true; |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2709 | } |
| 2710 | |
| 2711 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2712 | bool MacroAssembler::BranchShortHelper(int16_t offset, Label* L, Condition cond, |
| 2713 | Register rs, const Operand& rt, |
| 2714 | BranchDelaySlot bdslot) { |
| 2715 | DCHECK(L == nullptr || offset == 0); |
| 2716 | if (!is_near(L, OffsetSize::kOffset16)) return false; |
| 2717 | |
| 2718 | Register scratch = at; |
| 2719 | int32_t offset32; |
| 2720 | |
| 2721 | // Be careful to always use shifted_branch_offset only just before the |
| 2722 | // branch instruction, as the location will be remember for patching the |
| 2723 | // target. |
| 2724 | { |
| 2725 | BlockTrampolinePoolScope block_trampoline_pool(this); |
| 2726 | switch (cond) { |
| 2727 | case cc_always: |
| 2728 | offset32 = GetOffset(offset, L, OffsetSize::kOffset16); |
| 2729 | b(offset32); |
| 2730 | break; |
| 2731 | case eq: |
| 2732 | if (IsZero(rt)) { |
| 2733 | offset32 = GetOffset(offset, L, OffsetSize::kOffset16); |
| 2734 | beq(rs, zero_reg, offset32); |
| 2735 | } else { |
| 2736 | // We don't want any other register but scratch clobbered. |
| 2737 | scratch = GetRtAsRegisterHelper(rt, scratch); |
| 2738 | offset32 = GetOffset(offset, L, OffsetSize::kOffset16); |
| 2739 | beq(rs, scratch, offset32); |
| 2740 | } |
| 2741 | break; |
| 2742 | case ne: |
| 2743 | if (IsZero(rt)) { |
| 2744 | offset32 = GetOffset(offset, L, OffsetSize::kOffset16); |
| 2745 | bne(rs, zero_reg, offset32); |
| 2746 | } else { |
| 2747 | // We don't want any other register but scratch clobbered. |
| 2748 | scratch = GetRtAsRegisterHelper(rt, scratch); |
| 2749 | offset32 = GetOffset(offset, L, OffsetSize::kOffset16); |
| 2750 | bne(rs, scratch, offset32); |
| 2751 | } |
| 2752 | break; |
| 2753 | |
| 2754 | // Signed comparison. |
| 2755 | case greater: |
| 2756 | if (IsZero(rt)) { |
| 2757 | offset32 = GetOffset(offset, L, OffsetSize::kOffset16); |
| 2758 | bgtz(rs, offset32); |
| 2759 | } else { |
| 2760 | Slt(scratch, GetRtAsRegisterHelper(rt, scratch), rs); |
| 2761 | offset32 = GetOffset(offset, L, OffsetSize::kOffset16); |
| 2762 | bne(scratch, zero_reg, offset32); |
| 2763 | } |
| 2764 | break; |
| 2765 | case greater_equal: |
| 2766 | if (IsZero(rt)) { |
| 2767 | offset32 = GetOffset(offset, L, OffsetSize::kOffset16); |
| 2768 | bgez(rs, offset32); |
| 2769 | } else { |
| 2770 | Slt(scratch, rs, rt); |
| 2771 | offset32 = GetOffset(offset, L, OffsetSize::kOffset16); |
| 2772 | beq(scratch, zero_reg, offset32); |
| 2773 | } |
| 2774 | break; |
| 2775 | case less: |
| 2776 | if (IsZero(rt)) { |
| 2777 | offset32 = GetOffset(offset, L, OffsetSize::kOffset16); |
| 2778 | bltz(rs, offset32); |
| 2779 | } else { |
| 2780 | Slt(scratch, rs, rt); |
| 2781 | offset32 = GetOffset(offset, L, OffsetSize::kOffset16); |
| 2782 | bne(scratch, zero_reg, offset32); |
| 2783 | } |
| 2784 | break; |
| 2785 | case less_equal: |
| 2786 | if (IsZero(rt)) { |
| 2787 | offset32 = GetOffset(offset, L, OffsetSize::kOffset16); |
| 2788 | blez(rs, offset32); |
| 2789 | } else { |
| 2790 | Slt(scratch, GetRtAsRegisterHelper(rt, scratch), rs); |
| 2791 | offset32 = GetOffset(offset, L, OffsetSize::kOffset16); |
| 2792 | beq(scratch, zero_reg, offset32); |
| 2793 | } |
| 2794 | break; |
| 2795 | |
| 2796 | // Unsigned comparison. |
| 2797 | case Ugreater: |
| 2798 | if (IsZero(rt)) { |
| 2799 | offset32 = GetOffset(offset, L, OffsetSize::kOffset16); |
| 2800 | bne(rs, zero_reg, offset32); |
| 2801 | } else { |
| 2802 | Sltu(scratch, GetRtAsRegisterHelper(rt, scratch), rs); |
| 2803 | offset32 = GetOffset(offset, L, OffsetSize::kOffset16); |
| 2804 | bne(scratch, zero_reg, offset32); |
| 2805 | } |
| 2806 | break; |
| 2807 | case Ugreater_equal: |
| 2808 | if (IsZero(rt)) { |
| 2809 | offset32 = GetOffset(offset, L, OffsetSize::kOffset16); |
| 2810 | b(offset32); |
| 2811 | } else { |
| 2812 | Sltu(scratch, rs, rt); |
| 2813 | offset32 = GetOffset(offset, L, OffsetSize::kOffset16); |
| 2814 | beq(scratch, zero_reg, offset32); |
| 2815 | } |
| 2816 | break; |
| 2817 | case Uless: |
| 2818 | if (IsZero(rt)) { |
| 2819 | return true; // No code needs to be emitted. |
| 2820 | } else { |
| 2821 | Sltu(scratch, rs, rt); |
| 2822 | offset32 = GetOffset(offset, L, OffsetSize::kOffset16); |
| 2823 | bne(scratch, zero_reg, offset32); |
| 2824 | } |
| 2825 | break; |
| 2826 | case Uless_equal: |
| 2827 | if (IsZero(rt)) { |
| 2828 | offset32 = GetOffset(offset, L, OffsetSize::kOffset16); |
| 2829 | beq(rs, zero_reg, offset32); |
| 2830 | } else { |
| 2831 | Sltu(scratch, GetRtAsRegisterHelper(rt, scratch), rs); |
| 2832 | offset32 = GetOffset(offset, L, OffsetSize::kOffset16); |
| 2833 | beq(scratch, zero_reg, offset32); |
| 2834 | } |
| 2835 | break; |
| 2836 | default: |
| 2837 | UNREACHABLE(); |
| 2838 | } |
| 2839 | } |
| 2840 | // Emit a nop in the branch delay slot if required. |
| 2841 | if (bdslot == PROTECT) |
| 2842 | nop(); |
| 2843 | |
| 2844 | return true; |
| 2845 | } |
| 2846 | |
| 2847 | |
| 2848 | bool MacroAssembler::BranchShortCheck(int32_t offset, Label* L, Condition cond, |
| 2849 | Register rs, const Operand& rt, |
| 2850 | BranchDelaySlot bdslot) { |
| 2851 | BRANCH_ARGS_CHECK(cond, rs, rt); |
| 2852 | |
| 2853 | if (!L) { |
| 2854 | if (IsMipsArchVariant(kMips32r6) && bdslot == PROTECT) { |
| 2855 | DCHECK(is_int26(offset)); |
| 2856 | return BranchShortHelperR6(offset, nullptr, cond, rs, rt); |
| 2857 | } else { |
| 2858 | DCHECK(is_int16(offset)); |
| 2859 | return BranchShortHelper(offset, nullptr, cond, rs, rt, bdslot); |
| 2860 | } |
| 2861 | } else { |
| 2862 | DCHECK(offset == 0); |
| 2863 | if (IsMipsArchVariant(kMips32r6) && bdslot == PROTECT) { |
| 2864 | return BranchShortHelperR6(0, L, cond, rs, rt); |
| 2865 | } else { |
| 2866 | return BranchShortHelper(0, L, cond, rs, rt, bdslot); |
| 2867 | } |
| 2868 | } |
| 2869 | return false; |
| 2870 | } |
| 2871 | |
| 2872 | |
| 2873 | void MacroAssembler::BranchShort(int32_t offset, Condition cond, Register rs, |
| 2874 | const Operand& rt, BranchDelaySlot bdslot) { |
| 2875 | BranchShortCheck(offset, nullptr, cond, rs, rt, bdslot); |
| 2876 | } |
| 2877 | |
| 2878 | |
| 2879 | void MacroAssembler::BranchShort(Label* L, Condition cond, Register rs, |
| 2880 | const Operand& rt, BranchDelaySlot bdslot) { |
| 2881 | BranchShortCheck(0, L, cond, rs, rt, bdslot); |
| 2882 | } |
| 2883 | |
| 2884 | |
| 2885 | void MacroAssembler::BranchAndLink(int32_t offset, BranchDelaySlot bdslot) { |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 2886 | BranchAndLinkShort(offset, bdslot); |
| 2887 | } |
| 2888 | |
| 2889 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2890 | void MacroAssembler::BranchAndLink(int32_t offset, Condition cond, Register rs, |
| 2891 | const Operand& rt, BranchDelaySlot bdslot) { |
| 2892 | bool is_near = BranchAndLinkShortCheck(offset, nullptr, cond, rs, rt, bdslot); |
| 2893 | DCHECK(is_near); |
| 2894 | USE(is_near); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 2895 | } |
| 2896 | |
| 2897 | |
| 2898 | void MacroAssembler::BranchAndLink(Label* L, BranchDelaySlot bdslot) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2899 | if (L->is_bound()) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2900 | if (is_near_branch(L)) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2901 | BranchAndLinkShort(L, bdslot); |
| 2902 | } else { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2903 | BranchAndLinkLong(L, bdslot); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2904 | } |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 2905 | } else { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2906 | if (is_trampoline_emitted()) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2907 | BranchAndLinkLong(L, bdslot); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2908 | } else { |
| 2909 | BranchAndLinkShort(L, bdslot); |
| 2910 | } |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 2911 | } |
| 2912 | } |
| 2913 | |
| 2914 | |
| 2915 | void MacroAssembler::BranchAndLink(Label* L, Condition cond, Register rs, |
| 2916 | const Operand& rt, |
| 2917 | BranchDelaySlot bdslot) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2918 | if (L->is_bound()) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2919 | if (!BranchAndLinkShortCheck(0, L, cond, rs, rt, bdslot)) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2920 | Label skip; |
| 2921 | Condition neg_cond = NegateCondition(cond); |
| 2922 | BranchShort(&skip, neg_cond, rs, rt); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2923 | BranchAndLinkLong(L, bdslot); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2924 | bind(&skip); |
| 2925 | } |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 2926 | } else { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2927 | if (is_trampoline_emitted()) { |
| 2928 | Label skip; |
| 2929 | Condition neg_cond = NegateCondition(cond); |
| 2930 | BranchShort(&skip, neg_cond, rs, rt); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2931 | BranchAndLinkLong(L, bdslot); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2932 | bind(&skip); |
| 2933 | } else { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2934 | BranchAndLinkShortCheck(0, L, cond, rs, rt, bdslot); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2935 | } |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 2936 | } |
| 2937 | } |
| 2938 | |
| 2939 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2940 | void MacroAssembler::BranchAndLinkShortHelper(int16_t offset, Label* L, |
| 2941 | BranchDelaySlot bdslot) { |
| 2942 | DCHECK(L == nullptr || offset == 0); |
| 2943 | offset = GetOffset(offset, L, OffsetSize::kOffset16); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2944 | bal(offset); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 2945 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2946 | // Emit a nop in the branch delay slot if required. |
| 2947 | if (bdslot == PROTECT) |
| 2948 | nop(); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 2949 | } |
| 2950 | |
| 2951 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2952 | void MacroAssembler::BranchAndLinkShortHelperR6(int32_t offset, Label* L) { |
| 2953 | DCHECK(L == nullptr || offset == 0); |
| 2954 | offset = GetOffset(offset, L, OffsetSize::kOffset26); |
| 2955 | balc(offset); |
| 2956 | } |
| 2957 | |
| 2958 | |
| 2959 | void MacroAssembler::BranchAndLinkShort(int32_t offset, |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 2960 | BranchDelaySlot bdslot) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2961 | if (IsMipsArchVariant(kMips32r6) && bdslot == PROTECT) { |
| 2962 | DCHECK(is_int26(offset)); |
| 2963 | BranchAndLinkShortHelperR6(offset, nullptr); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2964 | } else { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2965 | DCHECK(is_int16(offset)); |
| 2966 | BranchAndLinkShortHelper(offset, nullptr, bdslot); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 2967 | } |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2968 | } |
| 2969 | |
| 2970 | |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 2971 | void MacroAssembler::BranchAndLinkShort(Label* L, BranchDelaySlot bdslot) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2972 | if (IsMipsArchVariant(kMips32r6) && bdslot == PROTECT) { |
| 2973 | BranchAndLinkShortHelperR6(0, L); |
| 2974 | } else { |
| 2975 | BranchAndLinkShortHelper(0, L, bdslot); |
| 2976 | } |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2977 | } |
| 2978 | |
| 2979 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2980 | bool MacroAssembler::BranchAndLinkShortHelperR6(int32_t offset, Label* L, |
| 2981 | Condition cond, Register rs, |
| 2982 | const Operand& rt) { |
| 2983 | DCHECK(L == nullptr || offset == 0); |
| 2984 | Register scratch = rs.is(at) ? t8 : at; |
| 2985 | OffsetSize bits = OffsetSize::kOffset16; |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2986 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2987 | BlockTrampolinePoolScope block_trampoline_pool(this); |
| 2988 | DCHECK((cond == cc_always && is_int26(offset)) || is_int16(offset)); |
| 2989 | switch (cond) { |
| 2990 | case cc_always: |
| 2991 | bits = OffsetSize::kOffset26; |
| 2992 | if (!is_near(L, bits)) return false; |
| 2993 | offset = GetOffset(offset, L, bits); |
| 2994 | balc(offset); |
| 2995 | break; |
| 2996 | case eq: |
| 2997 | if (!is_near(L, bits)) return false; |
| 2998 | Subu(scratch, rs, rt); |
| 2999 | offset = GetOffset(offset, L, bits); |
| 3000 | beqzalc(scratch, offset); |
| 3001 | break; |
| 3002 | case ne: |
| 3003 | if (!is_near(L, bits)) return false; |
| 3004 | Subu(scratch, rs, rt); |
| 3005 | offset = GetOffset(offset, L, bits); |
| 3006 | bnezalc(scratch, offset); |
| 3007 | break; |
| 3008 | |
| 3009 | // Signed comparison. |
| 3010 | case greater: |
| 3011 | // rs > rt |
| 3012 | if (rs.code() == rt.rm_.reg_code) { |
| 3013 | break; // No code needs to be emitted. |
| 3014 | } else if (rs.is(zero_reg)) { |
| 3015 | if (!is_near(L, bits)) return false; |
| 3016 | scratch = GetRtAsRegisterHelper(rt, scratch); |
| 3017 | offset = GetOffset(offset, L, bits); |
| 3018 | bltzalc(scratch, offset); |
| 3019 | } else if (IsZero(rt)) { |
| 3020 | if (!is_near(L, bits)) return false; |
| 3021 | offset = GetOffset(offset, L, bits); |
| 3022 | bgtzalc(rs, offset); |
| 3023 | } else { |
| 3024 | if (!is_near(L, bits)) return false; |
| 3025 | Slt(scratch, GetRtAsRegisterHelper(rt, scratch), rs); |
| 3026 | offset = GetOffset(offset, L, bits); |
| 3027 | bnezalc(scratch, offset); |
| 3028 | } |
| 3029 | break; |
| 3030 | case greater_equal: |
| 3031 | // rs >= rt |
| 3032 | if (rs.code() == rt.rm_.reg_code) { |
| 3033 | bits = OffsetSize::kOffset26; |
| 3034 | if (!is_near(L, bits)) return false; |
| 3035 | offset = GetOffset(offset, L, bits); |
| 3036 | balc(offset); |
| 3037 | } else if (rs.is(zero_reg)) { |
| 3038 | if (!is_near(L, bits)) return false; |
| 3039 | scratch = GetRtAsRegisterHelper(rt, scratch); |
| 3040 | offset = GetOffset(offset, L, bits); |
| 3041 | blezalc(scratch, offset); |
| 3042 | } else if (IsZero(rt)) { |
| 3043 | if (!is_near(L, bits)) return false; |
| 3044 | offset = GetOffset(offset, L, bits); |
| 3045 | bgezalc(rs, offset); |
| 3046 | } else { |
| 3047 | if (!is_near(L, bits)) return false; |
| 3048 | Slt(scratch, rs, rt); |
| 3049 | offset = GetOffset(offset, L, bits); |
| 3050 | beqzalc(scratch, offset); |
| 3051 | } |
| 3052 | break; |
| 3053 | case less: |
| 3054 | // rs < rt |
| 3055 | if (rs.code() == rt.rm_.reg_code) { |
| 3056 | break; // No code needs to be emitted. |
| 3057 | } else if (rs.is(zero_reg)) { |
| 3058 | if (!is_near(L, bits)) return false; |
| 3059 | scratch = GetRtAsRegisterHelper(rt, scratch); |
| 3060 | offset = GetOffset(offset, L, bits); |
| 3061 | bgtzalc(scratch, offset); |
| 3062 | } else if (IsZero(rt)) { |
| 3063 | if (!is_near(L, bits)) return false; |
| 3064 | offset = GetOffset(offset, L, bits); |
| 3065 | bltzalc(rs, offset); |
| 3066 | } else { |
| 3067 | if (!is_near(L, bits)) return false; |
| 3068 | Slt(scratch, rs, rt); |
| 3069 | offset = GetOffset(offset, L, bits); |
| 3070 | bnezalc(scratch, offset); |
| 3071 | } |
| 3072 | break; |
| 3073 | case less_equal: |
| 3074 | // rs <= r2 |
| 3075 | if (rs.code() == rt.rm_.reg_code) { |
| 3076 | bits = OffsetSize::kOffset26; |
| 3077 | if (!is_near(L, bits)) return false; |
| 3078 | offset = GetOffset(offset, L, bits); |
| 3079 | balc(offset); |
| 3080 | } else if (rs.is(zero_reg)) { |
| 3081 | if (!is_near(L, bits)) return false; |
| 3082 | scratch = GetRtAsRegisterHelper(rt, scratch); |
| 3083 | offset = GetOffset(offset, L, bits); |
| 3084 | bgezalc(scratch, offset); |
| 3085 | } else if (IsZero(rt)) { |
| 3086 | if (!is_near(L, bits)) return false; |
| 3087 | offset = GetOffset(offset, L, bits); |
| 3088 | blezalc(rs, offset); |
| 3089 | } else { |
| 3090 | if (!is_near(L, bits)) return false; |
| 3091 | Slt(scratch, GetRtAsRegisterHelper(rt, scratch), rs); |
| 3092 | offset = GetOffset(offset, L, bits); |
| 3093 | beqzalc(scratch, offset); |
| 3094 | } |
| 3095 | break; |
| 3096 | |
| 3097 | |
| 3098 | // Unsigned comparison. |
| 3099 | case Ugreater: |
| 3100 | // rs > r2 |
| 3101 | if (!is_near(L, bits)) return false; |
| 3102 | Sltu(scratch, GetRtAsRegisterHelper(rt, scratch), rs); |
| 3103 | offset = GetOffset(offset, L, bits); |
| 3104 | bnezalc(scratch, offset); |
| 3105 | break; |
| 3106 | case Ugreater_equal: |
| 3107 | // rs >= r2 |
| 3108 | if (!is_near(L, bits)) return false; |
| 3109 | Sltu(scratch, rs, rt); |
| 3110 | offset = GetOffset(offset, L, bits); |
| 3111 | beqzalc(scratch, offset); |
| 3112 | break; |
| 3113 | case Uless: |
| 3114 | // rs < r2 |
| 3115 | if (!is_near(L, bits)) return false; |
| 3116 | Sltu(scratch, rs, rt); |
| 3117 | offset = GetOffset(offset, L, bits); |
| 3118 | bnezalc(scratch, offset); |
| 3119 | break; |
| 3120 | case Uless_equal: |
| 3121 | // rs <= r2 |
| 3122 | if (!is_near(L, bits)) return false; |
| 3123 | Sltu(scratch, GetRtAsRegisterHelper(rt, scratch), rs); |
| 3124 | offset = GetOffset(offset, L, bits); |
| 3125 | beqzalc(scratch, offset); |
| 3126 | break; |
| 3127 | default: |
| 3128 | UNREACHABLE(); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3129 | } |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3130 | return true; |
| 3131 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3132 | |
| 3133 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3134 | // Pre r6 we need to use a bgezal or bltzal, but they can't be used directly |
| 3135 | // with the slt instructions. We could use sub or add instead but we would miss |
| 3136 | // overflow cases, so we keep slt and add an intermediate third instruction. |
| 3137 | bool MacroAssembler::BranchAndLinkShortHelper(int16_t offset, Label* L, |
| 3138 | Condition cond, Register rs, |
| 3139 | const Operand& rt, |
| 3140 | BranchDelaySlot bdslot) { |
| 3141 | DCHECK(L == nullptr || offset == 0); |
| 3142 | if (!is_near(L, OffsetSize::kOffset16)) return false; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3143 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3144 | Register scratch = t8; |
| 3145 | BlockTrampolinePoolScope block_trampoline_pool(this); |
| 3146 | |
| 3147 | switch (cond) { |
| 3148 | case cc_always: |
| 3149 | offset = GetOffset(offset, L, OffsetSize::kOffset16); |
| 3150 | bal(offset); |
| 3151 | break; |
| 3152 | case eq: |
| 3153 | bne(rs, GetRtAsRegisterHelper(rt, scratch), 2); |
| 3154 | nop(); |
| 3155 | offset = GetOffset(offset, L, OffsetSize::kOffset16); |
| 3156 | bal(offset); |
| 3157 | break; |
| 3158 | case ne: |
| 3159 | beq(rs, GetRtAsRegisterHelper(rt, scratch), 2); |
| 3160 | nop(); |
| 3161 | offset = GetOffset(offset, L, OffsetSize::kOffset16); |
| 3162 | bal(offset); |
| 3163 | break; |
| 3164 | |
| 3165 | // Signed comparison. |
| 3166 | case greater: |
| 3167 | Slt(scratch, GetRtAsRegisterHelper(rt, scratch), rs); |
| 3168 | addiu(scratch, scratch, -1); |
| 3169 | offset = GetOffset(offset, L, OffsetSize::kOffset16); |
| 3170 | bgezal(scratch, offset); |
| 3171 | break; |
| 3172 | case greater_equal: |
| 3173 | Slt(scratch, rs, rt); |
| 3174 | addiu(scratch, scratch, -1); |
| 3175 | offset = GetOffset(offset, L, OffsetSize::kOffset16); |
| 3176 | bltzal(scratch, offset); |
| 3177 | break; |
| 3178 | case less: |
| 3179 | Slt(scratch, rs, rt); |
| 3180 | addiu(scratch, scratch, -1); |
| 3181 | offset = GetOffset(offset, L, OffsetSize::kOffset16); |
| 3182 | bgezal(scratch, offset); |
| 3183 | break; |
| 3184 | case less_equal: |
| 3185 | Slt(scratch, GetRtAsRegisterHelper(rt, scratch), rs); |
| 3186 | addiu(scratch, scratch, -1); |
| 3187 | offset = GetOffset(offset, L, OffsetSize::kOffset16); |
| 3188 | bltzal(scratch, offset); |
| 3189 | break; |
| 3190 | |
| 3191 | // Unsigned comparison. |
| 3192 | case Ugreater: |
| 3193 | Sltu(scratch, GetRtAsRegisterHelper(rt, scratch), rs); |
| 3194 | addiu(scratch, scratch, -1); |
| 3195 | offset = GetOffset(offset, L, OffsetSize::kOffset16); |
| 3196 | bgezal(scratch, offset); |
| 3197 | break; |
| 3198 | case Ugreater_equal: |
| 3199 | Sltu(scratch, rs, rt); |
| 3200 | addiu(scratch, scratch, -1); |
| 3201 | offset = GetOffset(offset, L, OffsetSize::kOffset16); |
| 3202 | bltzal(scratch, offset); |
| 3203 | break; |
| 3204 | case Uless: |
| 3205 | Sltu(scratch, rs, rt); |
| 3206 | addiu(scratch, scratch, -1); |
| 3207 | offset = GetOffset(offset, L, OffsetSize::kOffset16); |
| 3208 | bgezal(scratch, offset); |
| 3209 | break; |
| 3210 | case Uless_equal: |
| 3211 | Sltu(scratch, GetRtAsRegisterHelper(rt, scratch), rs); |
| 3212 | addiu(scratch, scratch, -1); |
| 3213 | offset = GetOffset(offset, L, OffsetSize::kOffset16); |
| 3214 | bltzal(scratch, offset); |
| 3215 | break; |
| 3216 | |
| 3217 | default: |
| 3218 | UNREACHABLE(); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3219 | } |
| 3220 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3221 | // Emit a nop in the branch delay slot if required. |
| 3222 | if (bdslot == PROTECT) |
| 3223 | nop(); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3224 | |
| 3225 | return true; |
| 3226 | } |
| 3227 | |
| 3228 | |
| 3229 | bool MacroAssembler::BranchAndLinkShortCheck(int32_t offset, Label* L, |
| 3230 | Condition cond, Register rs, |
| 3231 | const Operand& rt, |
| 3232 | BranchDelaySlot bdslot) { |
| 3233 | BRANCH_ARGS_CHECK(cond, rs, rt); |
| 3234 | |
| 3235 | if (!L) { |
| 3236 | if (IsMipsArchVariant(kMips32r6) && bdslot == PROTECT) { |
| 3237 | DCHECK(is_int26(offset)); |
| 3238 | return BranchAndLinkShortHelperR6(offset, nullptr, cond, rs, rt); |
| 3239 | } else { |
| 3240 | DCHECK(is_int16(offset)); |
| 3241 | return BranchAndLinkShortHelper(offset, nullptr, cond, rs, rt, bdslot); |
| 3242 | } |
| 3243 | } else { |
| 3244 | DCHECK(offset == 0); |
| 3245 | if (IsMipsArchVariant(kMips32r6) && bdslot == PROTECT) { |
| 3246 | return BranchAndLinkShortHelperR6(0, L, cond, rs, rt); |
| 3247 | } else { |
| 3248 | return BranchAndLinkShortHelper(0, L, cond, rs, rt, bdslot); |
| 3249 | } |
| 3250 | } |
| 3251 | return false; |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3252 | } |
| 3253 | |
| 3254 | |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 3255 | void MacroAssembler::Jump(Register target, |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3256 | Condition cond, |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 3257 | Register rs, |
| 3258 | const Operand& rt, |
| 3259 | BranchDelaySlot bd) { |
| 3260 | BlockTrampolinePoolScope block_trampoline_pool(this); |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame^] | 3261 | if (IsMipsArchVariant(kMips32r6) && bd == PROTECT) { |
| 3262 | if (cond == cc_always) { |
| 3263 | jic(target, 0); |
| 3264 | } else { |
| 3265 | BRANCH_ARGS_CHECK(cond, rs, rt); |
| 3266 | Branch(2, NegateCondition(cond), rs, rt); |
| 3267 | jic(target, 0); |
| 3268 | } |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 3269 | } else { |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame^] | 3270 | if (cond == cc_always) { |
| 3271 | jr(target); |
| 3272 | } else { |
| 3273 | BRANCH_ARGS_CHECK(cond, rs, rt); |
| 3274 | Branch(2, NegateCondition(cond), rs, rt); |
| 3275 | jr(target); |
| 3276 | } |
| 3277 | // Emit a nop in the branch delay slot if required. |
| 3278 | if (bd == PROTECT) nop(); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 3279 | } |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 3280 | } |
| 3281 | |
| 3282 | |
| 3283 | void MacroAssembler::Jump(intptr_t target, |
| 3284 | RelocInfo::Mode rmode, |
| 3285 | Condition cond, |
| 3286 | Register rs, |
| 3287 | const Operand& rt, |
| 3288 | BranchDelaySlot bd) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3289 | Label skip; |
| 3290 | if (cond != cc_always) { |
| 3291 | Branch(USE_DELAY_SLOT, &skip, NegateCondition(cond), rs, rt); |
| 3292 | } |
| 3293 | // The first instruction of 'li' may be placed in the delay slot. |
| 3294 | // This is not an issue, t9 is expected to be clobbered anyway. |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 3295 | li(t9, Operand(target, rmode)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3296 | Jump(t9, al, zero_reg, Operand(zero_reg), bd); |
| 3297 | bind(&skip); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 3298 | } |
| 3299 | |
| 3300 | |
| 3301 | void MacroAssembler::Jump(Address target, |
| 3302 | RelocInfo::Mode rmode, |
| 3303 | Condition cond, |
| 3304 | Register rs, |
| 3305 | const Operand& rt, |
| 3306 | BranchDelaySlot bd) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3307 | DCHECK(!RelocInfo::IsCodeTarget(rmode)); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 3308 | Jump(reinterpret_cast<intptr_t>(target), rmode, cond, rs, rt, bd); |
| 3309 | } |
| 3310 | |
| 3311 | |
| 3312 | void MacroAssembler::Jump(Handle<Code> code, |
| 3313 | RelocInfo::Mode rmode, |
| 3314 | Condition cond, |
| 3315 | Register rs, |
| 3316 | const Operand& rt, |
| 3317 | BranchDelaySlot bd) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3318 | DCHECK(RelocInfo::IsCodeTarget(rmode)); |
| 3319 | AllowDeferredHandleDereference embedding_raw_address; |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 3320 | Jump(reinterpret_cast<intptr_t>(code.location()), rmode, cond, rs, rt, bd); |
| 3321 | } |
| 3322 | |
| 3323 | |
| 3324 | int MacroAssembler::CallSize(Register target, |
| 3325 | Condition cond, |
| 3326 | Register rs, |
| 3327 | const Operand& rt, |
| 3328 | BranchDelaySlot bd) { |
| 3329 | int size = 0; |
| 3330 | |
| 3331 | if (cond == cc_always) { |
| 3332 | size += 1; |
| 3333 | } else { |
| 3334 | size += 3; |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3335 | } |
| 3336 | |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame^] | 3337 | if (bd == PROTECT && !IsMipsArchVariant(kMips32r6)) size += 1; |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3338 | |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 3339 | return size * kInstrSize; |
| 3340 | } |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3341 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3342 | |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 3343 | // Note: To call gcc-compiled C code on mips, you must call thru t9. |
| 3344 | void MacroAssembler::Call(Register target, |
| 3345 | Condition cond, |
| 3346 | Register rs, |
| 3347 | const Operand& rt, |
| 3348 | BranchDelaySlot bd) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3349 | #ifdef DEBUG |
| 3350 | int size = IsPrevInstrCompactBranch() ? kInstrSize : 0; |
| 3351 | #endif |
| 3352 | |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 3353 | BlockTrampolinePoolScope block_trampoline_pool(this); |
| 3354 | Label start; |
| 3355 | bind(&start); |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame^] | 3356 | if (IsMipsArchVariant(kMips32r6) && bd == PROTECT) { |
| 3357 | if (cond == cc_always) { |
| 3358 | jialc(target, 0); |
| 3359 | } else { |
| 3360 | BRANCH_ARGS_CHECK(cond, rs, rt); |
| 3361 | Branch(2, NegateCondition(cond), rs, rt); |
| 3362 | jialc(target, 0); |
| 3363 | } |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 3364 | } else { |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame^] | 3365 | if (cond == cc_always) { |
| 3366 | jalr(target); |
| 3367 | } else { |
| 3368 | BRANCH_ARGS_CHECK(cond, rs, rt); |
| 3369 | Branch(2, NegateCondition(cond), rs, rt); |
| 3370 | jalr(target); |
| 3371 | } |
| 3372 | // Emit a nop in the branch delay slot if required. |
| 3373 | if (bd == PROTECT) nop(); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3374 | } |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 3375 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3376 | #ifdef DEBUG |
| 3377 | CHECK_EQ(size + CallSize(target, cond, rs, rt, bd), |
| 3378 | SizeOfCodeGeneratedSince(&start)); |
| 3379 | #endif |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 3380 | } |
| 3381 | |
| 3382 | |
| 3383 | int MacroAssembler::CallSize(Address target, |
| 3384 | RelocInfo::Mode rmode, |
| 3385 | Condition cond, |
| 3386 | Register rs, |
| 3387 | const Operand& rt, |
| 3388 | BranchDelaySlot bd) { |
| 3389 | int size = CallSize(t9, cond, rs, rt, bd); |
| 3390 | return size + 2 * kInstrSize; |
| 3391 | } |
| 3392 | |
| 3393 | |
| 3394 | void MacroAssembler::Call(Address target, |
| 3395 | RelocInfo::Mode rmode, |
| 3396 | Condition cond, |
| 3397 | Register rs, |
| 3398 | const Operand& rt, |
| 3399 | BranchDelaySlot bd) { |
| 3400 | BlockTrampolinePoolScope block_trampoline_pool(this); |
| 3401 | Label start; |
| 3402 | bind(&start); |
| 3403 | int32_t target_int = reinterpret_cast<int32_t>(target); |
| 3404 | // Must record previous source positions before the |
| 3405 | // li() generates a new code target. |
| 3406 | positions_recorder()->WriteRecordedPositions(); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3407 | li(t9, Operand(target_int, rmode), CONSTANT_SIZE); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 3408 | Call(t9, cond, rs, rt, bd); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3409 | DCHECK_EQ(CallSize(target, rmode, cond, rs, rt, bd), |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 3410 | SizeOfCodeGeneratedSince(&start)); |
| 3411 | } |
| 3412 | |
| 3413 | |
| 3414 | int MacroAssembler::CallSize(Handle<Code> code, |
| 3415 | RelocInfo::Mode rmode, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3416 | TypeFeedbackId ast_id, |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 3417 | Condition cond, |
| 3418 | Register rs, |
| 3419 | const Operand& rt, |
| 3420 | BranchDelaySlot bd) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3421 | AllowDeferredHandleDereference using_raw_address; |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 3422 | return CallSize(reinterpret_cast<Address>(code.location()), |
| 3423 | rmode, cond, rs, rt, bd); |
| 3424 | } |
| 3425 | |
| 3426 | |
| 3427 | void MacroAssembler::Call(Handle<Code> code, |
| 3428 | RelocInfo::Mode rmode, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3429 | TypeFeedbackId ast_id, |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 3430 | Condition cond, |
| 3431 | Register rs, |
| 3432 | const Operand& rt, |
| 3433 | BranchDelaySlot bd) { |
| 3434 | BlockTrampolinePoolScope block_trampoline_pool(this); |
| 3435 | Label start; |
| 3436 | bind(&start); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3437 | DCHECK(RelocInfo::IsCodeTarget(rmode)); |
| 3438 | if (rmode == RelocInfo::CODE_TARGET && !ast_id.IsNone()) { |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 3439 | SetRecordedAstId(ast_id); |
| 3440 | rmode = RelocInfo::CODE_TARGET_WITH_ID; |
| 3441 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3442 | AllowDeferredHandleDereference embedding_raw_address; |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 3443 | Call(reinterpret_cast<Address>(code.location()), rmode, cond, rs, rt, bd); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3444 | DCHECK_EQ(CallSize(code, rmode, ast_id, cond, rs, rt, bd), |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 3445 | SizeOfCodeGeneratedSince(&start)); |
| 3446 | } |
| 3447 | |
| 3448 | |
| 3449 | void MacroAssembler::Ret(Condition cond, |
| 3450 | Register rs, |
| 3451 | const Operand& rt, |
| 3452 | BranchDelaySlot bd) { |
| 3453 | Jump(ra, cond, rs, rt, bd); |
| 3454 | } |
| 3455 | |
| 3456 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3457 | void MacroAssembler::BranchLong(Label* L, BranchDelaySlot bdslot) { |
| 3458 | if (IsMipsArchVariant(kMips32r6) && bdslot == PROTECT && |
| 3459 | (!L->is_bound() || is_near_r6(L))) { |
| 3460 | BranchShortHelperR6(0, L); |
| 3461 | } else { |
| 3462 | BlockTrampolinePoolScope block_trampoline_pool(this); |
| 3463 | uint32_t imm32; |
| 3464 | imm32 = jump_address(L); |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame^] | 3465 | if (IsMipsArchVariant(kMips32r6) && bdslot == PROTECT) { |
| 3466 | uint32_t lui_offset, jic_offset; |
| 3467 | UnpackTargetAddressUnsigned(imm32, lui_offset, jic_offset); |
| 3468 | { |
| 3469 | BlockGrowBufferScope block_buf_growth(this); |
| 3470 | // Buffer growth (and relocation) must be blocked for internal |
| 3471 | // references until associated instructions are emitted and |
| 3472 | // available to be patched. |
| 3473 | RecordRelocInfo(RelocInfo::INTERNAL_REFERENCE_ENCODED); |
| 3474 | lui(at, lui_offset); |
| 3475 | jic(at, jic_offset); |
| 3476 | } |
| 3477 | CheckBuffer(); |
| 3478 | } else { |
| 3479 | { |
| 3480 | BlockGrowBufferScope block_buf_growth(this); |
| 3481 | // Buffer growth (and relocation) must be blocked for internal |
| 3482 | // references |
| 3483 | // until associated instructions are emitted and available to be |
| 3484 | // patched. |
| 3485 | RecordRelocInfo(RelocInfo::INTERNAL_REFERENCE_ENCODED); |
| 3486 | lui(at, (imm32 & kHiMask) >> kLuiShift); |
| 3487 | ori(at, at, (imm32 & kImm16Mask)); |
| 3488 | } |
| 3489 | CheckBuffer(); |
| 3490 | jr(at); |
| 3491 | // Emit a nop in the branch delay slot if required. |
| 3492 | if (bdslot == PROTECT) nop(); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3493 | } |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 3494 | } |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 3495 | } |
| 3496 | |
| 3497 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3498 | void MacroAssembler::BranchAndLinkLong(Label* L, BranchDelaySlot bdslot) { |
| 3499 | if (IsMipsArchVariant(kMips32r6) && bdslot == PROTECT && |
| 3500 | (!L->is_bound() || is_near_r6(L))) { |
| 3501 | BranchAndLinkShortHelperR6(0, L); |
| 3502 | } else { |
| 3503 | BlockTrampolinePoolScope block_trampoline_pool(this); |
| 3504 | uint32_t imm32; |
| 3505 | imm32 = jump_address(L); |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame^] | 3506 | if (IsMipsArchVariant(kMips32r6) && bdslot == PROTECT) { |
| 3507 | uint32_t lui_offset, jic_offset; |
| 3508 | UnpackTargetAddressUnsigned(imm32, lui_offset, jic_offset); |
| 3509 | { |
| 3510 | BlockGrowBufferScope block_buf_growth(this); |
| 3511 | // Buffer growth (and relocation) must be blocked for internal |
| 3512 | // references until associated instructions are emitted and |
| 3513 | // available to be patched. |
| 3514 | RecordRelocInfo(RelocInfo::INTERNAL_REFERENCE_ENCODED); |
| 3515 | lui(at, lui_offset); |
| 3516 | jialc(at, jic_offset); |
| 3517 | } |
| 3518 | CheckBuffer(); |
| 3519 | } else { |
| 3520 | { |
| 3521 | BlockGrowBufferScope block_buf_growth(this); |
| 3522 | // Buffer growth (and relocation) must be blocked for internal |
| 3523 | // references |
| 3524 | // until associated instructions are emitted and available to be |
| 3525 | // patched. |
| 3526 | RecordRelocInfo(RelocInfo::INTERNAL_REFERENCE_ENCODED); |
| 3527 | lui(at, (imm32 & kHiMask) >> kLuiShift); |
| 3528 | ori(at, at, (imm32 & kImm16Mask)); |
| 3529 | } |
| 3530 | CheckBuffer(); |
| 3531 | jalr(at); |
| 3532 | // Emit a nop in the branch delay slot if required. |
| 3533 | if (bdslot == PROTECT) nop(); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3534 | } |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 3535 | } |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3536 | } |
| 3537 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3538 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3539 | void MacroAssembler::DropAndRet(int drop) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3540 | DCHECK(is_int16(drop * kPointerSize)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3541 | Ret(USE_DELAY_SLOT); |
| 3542 | addiu(sp, sp, drop * kPointerSize); |
| 3543 | } |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3544 | |
| 3545 | void MacroAssembler::DropAndRet(int drop, |
| 3546 | Condition cond, |
| 3547 | Register r1, |
| 3548 | const Operand& r2) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3549 | // Both Drop and Ret need to be conditional. |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3550 | Label skip; |
| 3551 | if (cond != cc_always) { |
| 3552 | Branch(&skip, NegateCondition(cond), r1, r2); |
| 3553 | } |
| 3554 | |
| 3555 | Drop(drop); |
| 3556 | Ret(); |
| 3557 | |
| 3558 | if (cond != cc_always) { |
| 3559 | bind(&skip); |
| 3560 | } |
| 3561 | } |
| 3562 | |
| 3563 | |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 3564 | void MacroAssembler::Drop(int count, |
| 3565 | Condition cond, |
| 3566 | Register reg, |
| 3567 | const Operand& op) { |
| 3568 | if (count <= 0) { |
| 3569 | return; |
| 3570 | } |
| 3571 | |
| 3572 | Label skip; |
| 3573 | |
| 3574 | if (cond != al) { |
| 3575 | Branch(&skip, NegateCondition(cond), reg, op); |
| 3576 | } |
| 3577 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3578 | Addu(sp, sp, Operand(count * kPointerSize)); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 3579 | |
| 3580 | if (cond != al) { |
| 3581 | bind(&skip); |
| 3582 | } |
| 3583 | } |
| 3584 | |
| 3585 | |
| 3586 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3587 | void MacroAssembler::Swap(Register reg1, |
| 3588 | Register reg2, |
| 3589 | Register scratch) { |
| 3590 | if (scratch.is(no_reg)) { |
| 3591 | Xor(reg1, reg1, Operand(reg2)); |
| 3592 | Xor(reg2, reg2, Operand(reg1)); |
| 3593 | Xor(reg1, reg1, Operand(reg2)); |
| 3594 | } else { |
| 3595 | mov(scratch, reg1); |
| 3596 | mov(reg1, reg2); |
| 3597 | mov(reg2, scratch); |
| 3598 | } |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 3599 | } |
| 3600 | |
| 3601 | |
| 3602 | void MacroAssembler::Call(Label* target) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3603 | BranchAndLink(target); |
| 3604 | } |
| 3605 | |
| 3606 | |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 3607 | void MacroAssembler::Push(Handle<Object> handle) { |
| 3608 | li(at, Operand(handle)); |
| 3609 | push(at); |
| 3610 | } |
| 3611 | |
| 3612 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3613 | void MacroAssembler::DebugBreak() { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3614 | PrepareCEntryArgs(0); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3615 | PrepareCEntryFunction( |
| 3616 | ExternalReference(Runtime::kHandleDebuggerStatement, isolate())); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3617 | CEntryStub ces(isolate(), 1); |
| 3618 | DCHECK(AllowThisStubCall(&ces)); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3619 | Call(ces.GetCode(), RelocInfo::DEBUGGER_STATEMENT); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3620 | } |
| 3621 | |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 3622 | |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 3623 | // --------------------------------------------------------------------------- |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3624 | // Exception handling. |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 3625 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3626 | void MacroAssembler::PushStackHandler() { |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 3627 | // Adjust this code if not the case. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3628 | STATIC_ASSERT(StackHandlerConstants::kSize == 1 * kPointerSize); |
Ben Murdoch | 69a99ed | 2011-11-30 16:03:39 +0000 | [diff] [blame] | 3629 | STATIC_ASSERT(StackHandlerConstants::kNextOffset == 0 * kPointerSize); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3630 | |
| 3631 | // Link the current handler as the next handler. |
| 3632 | li(t2, Operand(ExternalReference(Isolate::kHandlerAddress, isolate()))); |
| 3633 | lw(t1, MemOperand(t2)); |
| 3634 | push(t1); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3635 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3636 | // Set this new handler as the current one. |
| 3637 | sw(sp, MemOperand(t2)); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 3638 | } |
| 3639 | |
| 3640 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3641 | void MacroAssembler::PopStackHandler() { |
Ben Murdoch | 69a99ed | 2011-11-30 16:03:39 +0000 | [diff] [blame] | 3642 | STATIC_ASSERT(StackHandlerConstants::kNextOffset == 0); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3643 | pop(a1); |
| 3644 | Addu(sp, sp, Operand(StackHandlerConstants::kSize - kPointerSize)); |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 3645 | li(at, Operand(ExternalReference(Isolate::kHandlerAddress, isolate()))); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3646 | sw(a1, MemOperand(at)); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 3647 | } |
| 3648 | |
| 3649 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3650 | void MacroAssembler::Allocate(int object_size, |
| 3651 | Register result, |
| 3652 | Register scratch1, |
| 3653 | Register scratch2, |
| 3654 | Label* gc_required, |
| 3655 | AllocationFlags flags) { |
| 3656 | DCHECK(object_size <= Page::kMaxRegularHeapObjectSize); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3657 | if (!FLAG_inline_new) { |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3658 | if (emit_debug_code()) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3659 | // Trash the registers to simulate an allocation failure. |
| 3660 | li(result, 0x7091); |
| 3661 | li(scratch1, 0x7191); |
| 3662 | li(scratch2, 0x7291); |
| 3663 | } |
| 3664 | jmp(gc_required); |
| 3665 | return; |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 3666 | } |
| 3667 | |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 3668 | DCHECK(!AreAliased(result, scratch1, scratch2, t9, at)); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 3669 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3670 | // Make object size into bytes. |
| 3671 | if ((flags & SIZE_IN_WORDS) != 0) { |
| 3672 | object_size *= kPointerSize; |
| 3673 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3674 | DCHECK_EQ(0, object_size & kObjectAlignmentMask); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 3675 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3676 | // Check relative positions of allocation top and limit addresses. |
| 3677 | // ARM adds additional checks to make sure the ldm instruction can be |
| 3678 | // 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] | 3679 | ExternalReference allocation_top = |
| 3680 | AllocationUtils::GetAllocationTopReference(isolate(), flags); |
| 3681 | ExternalReference allocation_limit = |
| 3682 | AllocationUtils::GetAllocationLimitReference(isolate(), flags); |
| 3683 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3684 | intptr_t top = reinterpret_cast<intptr_t>(allocation_top.address()); |
| 3685 | intptr_t limit = reinterpret_cast<intptr_t>(allocation_limit.address()); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3686 | DCHECK((limit - top) == kPointerSize); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3687 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3688 | // Set up allocation top address and allocation limit registers. |
| 3689 | Register top_address = scratch1; |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3690 | // This code stores a temporary value in t9. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3691 | Register alloc_limit = t9; |
| 3692 | Register result_end = scratch2; |
| 3693 | li(top_address, Operand(allocation_top)); |
| 3694 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3695 | if ((flags & RESULT_CONTAINS_TOP) == 0) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3696 | // Load allocation top into result and allocation limit into alloc_limit. |
| 3697 | lw(result, MemOperand(top_address)); |
| 3698 | lw(alloc_limit, MemOperand(top_address, kPointerSize)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3699 | } else { |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3700 | if (emit_debug_code()) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3701 | // Assert that result actually contains top on entry. |
| 3702 | lw(alloc_limit, MemOperand(top_address)); |
| 3703 | Check(eq, kUnexpectedAllocationTop, result, Operand(alloc_limit)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3704 | } |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3705 | // Load allocation limit. Result already contains allocation top. |
| 3706 | lw(alloc_limit, MemOperand(top_address, limit - top)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3707 | } |
| 3708 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3709 | if ((flags & DOUBLE_ALIGNMENT) != 0) { |
| 3710 | // Align the next allocation. Storing the filler map without checking top is |
| 3711 | // 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] | 3712 | DCHECK(kPointerAlignment * 2 == kDoubleAlignment); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3713 | And(result_end, result, Operand(kDoubleAlignmentMask)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3714 | Label aligned; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3715 | Branch(&aligned, eq, result_end, Operand(zero_reg)); |
| 3716 | if ((flags & PRETENURE) != 0) { |
| 3717 | Branch(gc_required, Ugreater_equal, result, Operand(alloc_limit)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3718 | } |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3719 | li(result_end, Operand(isolate()->factory()->one_pointer_filler_map())); |
| 3720 | sw(result_end, MemOperand(result)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3721 | Addu(result, result, Operand(kDoubleSize / 2)); |
| 3722 | bind(&aligned); |
| 3723 | } |
| 3724 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3725 | // Calculate new top and bail out if new space is exhausted. Use result |
| 3726 | // to calculate the new top. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3727 | Addu(result_end, result, Operand(object_size)); |
| 3728 | Branch(gc_required, Ugreater, result_end, Operand(alloc_limit)); |
| 3729 | sw(result_end, MemOperand(top_address)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3730 | |
| 3731 | // Tag object if requested. |
| 3732 | if ((flags & TAG_OBJECT) != 0) { |
| 3733 | Addu(result, result, Operand(kHeapObjectTag)); |
| 3734 | } |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 3735 | } |
| 3736 | |
| 3737 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3738 | void MacroAssembler::Allocate(Register object_size, Register result, |
| 3739 | Register result_end, Register scratch, |
| 3740 | Label* gc_required, AllocationFlags flags) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3741 | if (!FLAG_inline_new) { |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3742 | if (emit_debug_code()) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3743 | // Trash the registers to simulate an allocation failure. |
| 3744 | li(result, 0x7091); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3745 | li(scratch, 0x7191); |
| 3746 | li(result_end, 0x7291); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3747 | } |
| 3748 | jmp(gc_required); |
| 3749 | return; |
| 3750 | } |
| 3751 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3752 | // |object_size| and |result_end| may overlap if the DOUBLE_ALIGNMENT flag |
| 3753 | // is not specified. Other registers must not overlap. |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 3754 | DCHECK(!AreAliased(object_size, result, scratch, t9, at)); |
| 3755 | DCHECK(!AreAliased(result_end, result, scratch, t9, at)); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3756 | DCHECK((flags & DOUBLE_ALIGNMENT) == 0 || !object_size.is(result_end)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3757 | |
| 3758 | // Check relative positions of allocation top and limit addresses. |
| 3759 | // ARM adds additional checks to make sure the ldm instruction can be |
| 3760 | // 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] | 3761 | ExternalReference allocation_top = |
| 3762 | AllocationUtils::GetAllocationTopReference(isolate(), flags); |
| 3763 | ExternalReference allocation_limit = |
| 3764 | AllocationUtils::GetAllocationLimitReference(isolate(), flags); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3765 | intptr_t top = reinterpret_cast<intptr_t>(allocation_top.address()); |
| 3766 | intptr_t limit = reinterpret_cast<intptr_t>(allocation_limit.address()); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3767 | DCHECK((limit - top) == kPointerSize); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3768 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3769 | // Set up allocation top address and allocation limit registers. |
| 3770 | Register top_address = scratch; |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3771 | // This code stores a temporary value in t9. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3772 | Register alloc_limit = t9; |
| 3773 | li(top_address, Operand(allocation_top)); |
| 3774 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3775 | if ((flags & RESULT_CONTAINS_TOP) == 0) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3776 | // Load allocation top into result and allocation limit into alloc_limit. |
| 3777 | lw(result, MemOperand(top_address)); |
| 3778 | lw(alloc_limit, MemOperand(top_address, kPointerSize)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3779 | } else { |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3780 | if (emit_debug_code()) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3781 | // Assert that result actually contains top on entry. |
| 3782 | lw(alloc_limit, MemOperand(top_address)); |
| 3783 | Check(eq, kUnexpectedAllocationTop, result, Operand(alloc_limit)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3784 | } |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3785 | // Load allocation limit. Result already contains allocation top. |
| 3786 | lw(alloc_limit, MemOperand(top_address, limit - top)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3787 | } |
| 3788 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3789 | if ((flags & DOUBLE_ALIGNMENT) != 0) { |
| 3790 | // Align the next allocation. Storing the filler map without checking top is |
| 3791 | // 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] | 3792 | DCHECK(kPointerAlignment * 2 == kDoubleAlignment); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3793 | And(result_end, result, Operand(kDoubleAlignmentMask)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3794 | Label aligned; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3795 | Branch(&aligned, eq, result_end, Operand(zero_reg)); |
| 3796 | if ((flags & PRETENURE) != 0) { |
| 3797 | Branch(gc_required, Ugreater_equal, result, Operand(alloc_limit)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3798 | } |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3799 | li(result_end, Operand(isolate()->factory()->one_pointer_filler_map())); |
| 3800 | sw(result_end, MemOperand(result)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3801 | Addu(result, result, Operand(kDoubleSize / 2)); |
| 3802 | bind(&aligned); |
| 3803 | } |
| 3804 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3805 | // Calculate new top and bail out if new space is exhausted. Use result |
| 3806 | // to calculate the new top. Object size may be in words so a shift is |
| 3807 | // required to get the number of bytes. |
| 3808 | if ((flags & SIZE_IN_WORDS) != 0) { |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 3809 | Lsa(result_end, result, object_size, kPointerSizeLog2); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3810 | } else { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3811 | Addu(result_end, result, Operand(object_size)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3812 | } |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3813 | Branch(gc_required, Ugreater, result_end, Operand(alloc_limit)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3814 | |
| 3815 | // Update allocation top. result temporarily holds the new top. |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3816 | if (emit_debug_code()) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3817 | And(alloc_limit, result_end, Operand(kObjectAlignmentMask)); |
| 3818 | Check(eq, kUnalignedAllocationInNewSpace, alloc_limit, Operand(zero_reg)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3819 | } |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3820 | sw(result_end, MemOperand(top_address)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3821 | |
| 3822 | // Tag object if requested. |
| 3823 | if ((flags & TAG_OBJECT) != 0) { |
| 3824 | Addu(result, result, Operand(kHeapObjectTag)); |
| 3825 | } |
| 3826 | } |
| 3827 | |
| 3828 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3829 | void MacroAssembler::AllocateTwoByteString(Register result, |
| 3830 | Register length, |
| 3831 | Register scratch1, |
| 3832 | Register scratch2, |
| 3833 | Register scratch3, |
| 3834 | Label* gc_required) { |
| 3835 | // Calculate the number of bytes needed for the characters in the string while |
| 3836 | // observing object alignment. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3837 | DCHECK((SeqTwoByteString::kHeaderSize & kObjectAlignmentMask) == 0); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3838 | sll(scratch1, length, 1); // Length in bytes, not chars. |
| 3839 | addiu(scratch1, scratch1, |
| 3840 | kObjectAlignmentMask + SeqTwoByteString::kHeaderSize); |
| 3841 | And(scratch1, scratch1, Operand(~kObjectAlignmentMask)); |
| 3842 | |
| 3843 | // Allocate two-byte string in new space. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3844 | Allocate(scratch1, |
| 3845 | result, |
| 3846 | scratch2, |
| 3847 | scratch3, |
| 3848 | gc_required, |
| 3849 | TAG_OBJECT); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3850 | |
| 3851 | // Set the map, length and hash field. |
| 3852 | InitializeNewString(result, |
| 3853 | length, |
| 3854 | Heap::kStringMapRootIndex, |
| 3855 | scratch1, |
| 3856 | scratch2); |
| 3857 | } |
| 3858 | |
| 3859 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3860 | void MacroAssembler::AllocateOneByteString(Register result, Register length, |
| 3861 | Register scratch1, Register scratch2, |
| 3862 | Register scratch3, |
| 3863 | Label* gc_required) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3864 | // Calculate the number of bytes needed for the characters in the string |
| 3865 | // while observing object alignment. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3866 | DCHECK((SeqOneByteString::kHeaderSize & kObjectAlignmentMask) == 0); |
| 3867 | DCHECK(kCharSize == 1); |
| 3868 | addiu(scratch1, length, kObjectAlignmentMask + SeqOneByteString::kHeaderSize); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3869 | And(scratch1, scratch1, Operand(~kObjectAlignmentMask)); |
| 3870 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3871 | // Allocate one-byte string in new space. |
| 3872 | Allocate(scratch1, |
| 3873 | result, |
| 3874 | scratch2, |
| 3875 | scratch3, |
| 3876 | gc_required, |
| 3877 | TAG_OBJECT); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3878 | |
| 3879 | // Set the map, length and hash field. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3880 | InitializeNewString(result, length, Heap::kOneByteStringMapRootIndex, |
| 3881 | scratch1, scratch2); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3882 | } |
| 3883 | |
| 3884 | |
| 3885 | void MacroAssembler::AllocateTwoByteConsString(Register result, |
| 3886 | Register length, |
| 3887 | Register scratch1, |
| 3888 | Register scratch2, |
| 3889 | Label* gc_required) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3890 | Allocate(ConsString::kSize, result, scratch1, scratch2, gc_required, |
| 3891 | TAG_OBJECT); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3892 | InitializeNewString(result, |
| 3893 | length, |
| 3894 | Heap::kConsStringMapRootIndex, |
| 3895 | scratch1, |
| 3896 | scratch2); |
| 3897 | } |
| 3898 | |
| 3899 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3900 | void MacroAssembler::AllocateOneByteConsString(Register result, Register length, |
| 3901 | Register scratch1, |
| 3902 | Register scratch2, |
| 3903 | Label* gc_required) { |
| 3904 | Allocate(ConsString::kSize, |
| 3905 | result, |
| 3906 | scratch1, |
| 3907 | scratch2, |
| 3908 | gc_required, |
| 3909 | TAG_OBJECT); |
| 3910 | |
| 3911 | InitializeNewString(result, length, Heap::kConsOneByteStringMapRootIndex, |
| 3912 | scratch1, scratch2); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3913 | } |
| 3914 | |
| 3915 | |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 3916 | void MacroAssembler::AllocateTwoByteSlicedString(Register result, |
| 3917 | Register length, |
| 3918 | Register scratch1, |
| 3919 | Register scratch2, |
| 3920 | Label* gc_required) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3921 | Allocate(SlicedString::kSize, result, scratch1, scratch2, gc_required, |
| 3922 | TAG_OBJECT); |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 3923 | |
| 3924 | InitializeNewString(result, |
| 3925 | length, |
| 3926 | Heap::kSlicedStringMapRootIndex, |
| 3927 | scratch1, |
| 3928 | scratch2); |
| 3929 | } |
| 3930 | |
| 3931 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3932 | void MacroAssembler::AllocateOneByteSlicedString(Register result, |
| 3933 | Register length, |
| 3934 | Register scratch1, |
| 3935 | Register scratch2, |
| 3936 | Label* gc_required) { |
| 3937 | Allocate(SlicedString::kSize, result, scratch1, scratch2, gc_required, |
| 3938 | TAG_OBJECT); |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 3939 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3940 | InitializeNewString(result, length, Heap::kSlicedOneByteStringMapRootIndex, |
| 3941 | scratch1, scratch2); |
| 3942 | } |
| 3943 | |
| 3944 | |
| 3945 | void MacroAssembler::JumpIfNotUniqueNameInstanceType(Register reg, |
| 3946 | Label* not_unique_name) { |
| 3947 | STATIC_ASSERT(kInternalizedTag == 0 && kStringTag == 0); |
| 3948 | Label succeed; |
| 3949 | And(at, reg, Operand(kIsNotStringMask | kIsNotInternalizedMask)); |
| 3950 | Branch(&succeed, eq, at, Operand(zero_reg)); |
| 3951 | Branch(not_unique_name, ne, reg, Operand(SYMBOL_TYPE)); |
| 3952 | |
| 3953 | bind(&succeed); |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 3954 | } |
| 3955 | |
| 3956 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3957 | // Allocates a heap number or jumps to the label if the young space is full and |
| 3958 | // a scavenge is needed. |
| 3959 | void MacroAssembler::AllocateHeapNumber(Register result, |
| 3960 | Register scratch1, |
| 3961 | Register scratch2, |
| 3962 | Register heap_number_map, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3963 | Label* need_gc, |
| 3964 | TaggingMode tagging_mode, |
| 3965 | MutableMode mode) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3966 | // Allocate an object in the heap for the heap number and tag it as a heap |
| 3967 | // object. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3968 | Allocate(HeapNumber::kSize, result, scratch1, scratch2, need_gc, |
| 3969 | tagging_mode == TAG_RESULT ? TAG_OBJECT : NO_ALLOCATION_FLAGS); |
| 3970 | |
| 3971 | Heap::RootListIndex map_index = mode == MUTABLE |
| 3972 | ? Heap::kMutableHeapNumberMapRootIndex |
| 3973 | : Heap::kHeapNumberMapRootIndex; |
| 3974 | AssertIsRoot(heap_number_map, map_index); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3975 | |
| 3976 | // Store heap number map in the allocated object. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3977 | if (tagging_mode == TAG_RESULT) { |
| 3978 | sw(heap_number_map, FieldMemOperand(result, HeapObject::kMapOffset)); |
| 3979 | } else { |
| 3980 | sw(heap_number_map, MemOperand(result, HeapObject::kMapOffset)); |
| 3981 | } |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3982 | } |
| 3983 | |
| 3984 | |
| 3985 | void MacroAssembler::AllocateHeapNumberWithValue(Register result, |
| 3986 | FPURegister value, |
| 3987 | Register scratch1, |
| 3988 | Register scratch2, |
| 3989 | Label* gc_required) { |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 3990 | LoadRoot(t8, Heap::kHeapNumberMapRootIndex); |
| 3991 | AllocateHeapNumber(result, scratch1, scratch2, t8, gc_required); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3992 | sdc1(value, FieldMemOperand(result, HeapNumber::kValueOffset)); |
| 3993 | } |
| 3994 | |
| 3995 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3996 | void MacroAssembler::AllocateJSValue(Register result, Register constructor, |
| 3997 | Register value, Register scratch1, |
| 3998 | Register scratch2, Label* gc_required) { |
| 3999 | DCHECK(!result.is(constructor)); |
| 4000 | DCHECK(!result.is(scratch1)); |
| 4001 | DCHECK(!result.is(scratch2)); |
| 4002 | DCHECK(!result.is(value)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4003 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4004 | // Allocate JSValue in new space. |
| 4005 | Allocate(JSValue::kSize, result, scratch1, scratch2, gc_required, TAG_OBJECT); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4006 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4007 | // Initialize the JSValue. |
| 4008 | LoadGlobalFunctionInitialMap(constructor, scratch1, scratch2); |
| 4009 | sw(scratch1, FieldMemOperand(result, HeapObject::kMapOffset)); |
| 4010 | LoadRoot(scratch1, Heap::kEmptyFixedArrayRootIndex); |
| 4011 | sw(scratch1, FieldMemOperand(result, JSObject::kPropertiesOffset)); |
| 4012 | sw(scratch1, FieldMemOperand(result, JSObject::kElementsOffset)); |
| 4013 | sw(value, FieldMemOperand(result, JSValue::kValueOffset)); |
| 4014 | STATIC_ASSERT(JSValue::kSize == 4 * kPointerSize); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4015 | } |
| 4016 | |
| 4017 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4018 | void MacroAssembler::CopyBytes(Register src, |
| 4019 | Register dst, |
| 4020 | Register length, |
| 4021 | Register scratch) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4022 | Label align_loop_1, word_loop, byte_loop, byte_loop_1, done; |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4023 | |
| 4024 | // Align src before copying in word size chunks. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4025 | Branch(&byte_loop, le, length, Operand(kPointerSize)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4026 | bind(&align_loop_1); |
| 4027 | And(scratch, src, kPointerSize - 1); |
| 4028 | Branch(&word_loop, eq, scratch, Operand(zero_reg)); |
| 4029 | lbu(scratch, MemOperand(src)); |
| 4030 | Addu(src, src, 1); |
| 4031 | sb(scratch, MemOperand(dst)); |
| 4032 | Addu(dst, dst, 1); |
| 4033 | Subu(length, length, Operand(1)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4034 | Branch(&align_loop_1, ne, length, Operand(zero_reg)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4035 | |
| 4036 | // Copy bytes in word size chunks. |
| 4037 | bind(&word_loop); |
| 4038 | if (emit_debug_code()) { |
| 4039 | And(scratch, src, kPointerSize - 1); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4040 | Assert(eq, kExpectingAlignmentForCopyBytes, |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4041 | scratch, Operand(zero_reg)); |
| 4042 | } |
| 4043 | Branch(&byte_loop, lt, length, Operand(kPointerSize)); |
| 4044 | lw(scratch, MemOperand(src)); |
| 4045 | Addu(src, src, kPointerSize); |
| 4046 | |
| 4047 | // TODO(kalmard) check if this can be optimized to use sw in most cases. |
| 4048 | // Can't use unaligned access - copy byte by byte. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4049 | if (kArchEndian == kLittle) { |
| 4050 | sb(scratch, MemOperand(dst, 0)); |
| 4051 | srl(scratch, scratch, 8); |
| 4052 | sb(scratch, MemOperand(dst, 1)); |
| 4053 | srl(scratch, scratch, 8); |
| 4054 | sb(scratch, MemOperand(dst, 2)); |
| 4055 | srl(scratch, scratch, 8); |
| 4056 | sb(scratch, MemOperand(dst, 3)); |
| 4057 | } else { |
| 4058 | sb(scratch, MemOperand(dst, 3)); |
| 4059 | srl(scratch, scratch, 8); |
| 4060 | sb(scratch, MemOperand(dst, 2)); |
| 4061 | srl(scratch, scratch, 8); |
| 4062 | sb(scratch, MemOperand(dst, 1)); |
| 4063 | srl(scratch, scratch, 8); |
| 4064 | sb(scratch, MemOperand(dst, 0)); |
| 4065 | } |
| 4066 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4067 | Addu(dst, dst, 4); |
| 4068 | |
| 4069 | Subu(length, length, Operand(kPointerSize)); |
| 4070 | Branch(&word_loop); |
| 4071 | |
| 4072 | // Copy the last bytes if any left. |
| 4073 | bind(&byte_loop); |
| 4074 | Branch(&done, eq, length, Operand(zero_reg)); |
| 4075 | bind(&byte_loop_1); |
| 4076 | lbu(scratch, MemOperand(src)); |
| 4077 | Addu(src, src, 1); |
| 4078 | sb(scratch, MemOperand(dst)); |
| 4079 | Addu(dst, dst, 1); |
| 4080 | Subu(length, length, Operand(1)); |
| 4081 | Branch(&byte_loop_1, ne, length, Operand(zero_reg)); |
| 4082 | bind(&done); |
| 4083 | } |
| 4084 | |
| 4085 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4086 | void MacroAssembler::InitializeFieldsWithFiller(Register current_address, |
| 4087 | Register end_address, |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4088 | Register filler) { |
| 4089 | Label loop, entry; |
| 4090 | Branch(&entry); |
| 4091 | bind(&loop); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4092 | sw(filler, MemOperand(current_address)); |
| 4093 | Addu(current_address, current_address, kPointerSize); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4094 | bind(&entry); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4095 | Branch(&loop, ult, current_address, Operand(end_address)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4096 | } |
| 4097 | |
| 4098 | |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 4099 | void MacroAssembler::CheckFastElements(Register map, |
| 4100 | Register scratch, |
| 4101 | Label* fail) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4102 | STATIC_ASSERT(FAST_SMI_ELEMENTS == 0); |
| 4103 | STATIC_ASSERT(FAST_HOLEY_SMI_ELEMENTS == 1); |
| 4104 | STATIC_ASSERT(FAST_ELEMENTS == 2); |
| 4105 | STATIC_ASSERT(FAST_HOLEY_ELEMENTS == 3); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 4106 | lbu(scratch, FieldMemOperand(map, Map::kBitField2Offset)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4107 | Branch(fail, hi, scratch, |
| 4108 | Operand(Map::kMaximumBitField2FastHoleyElementValue)); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 4109 | } |
| 4110 | |
| 4111 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4112 | void MacroAssembler::CheckFastObjectElements(Register map, |
| 4113 | Register scratch, |
| 4114 | Label* fail) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4115 | STATIC_ASSERT(FAST_SMI_ELEMENTS == 0); |
| 4116 | STATIC_ASSERT(FAST_HOLEY_SMI_ELEMENTS == 1); |
| 4117 | STATIC_ASSERT(FAST_ELEMENTS == 2); |
| 4118 | STATIC_ASSERT(FAST_HOLEY_ELEMENTS == 3); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4119 | lbu(scratch, FieldMemOperand(map, Map::kBitField2Offset)); |
| 4120 | Branch(fail, ls, scratch, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4121 | Operand(Map::kMaximumBitField2FastHoleySmiElementValue)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4122 | Branch(fail, hi, scratch, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4123 | Operand(Map::kMaximumBitField2FastHoleyElementValue)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4124 | } |
| 4125 | |
| 4126 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4127 | void MacroAssembler::CheckFastSmiElements(Register map, |
| 4128 | Register scratch, |
| 4129 | Label* fail) { |
| 4130 | STATIC_ASSERT(FAST_SMI_ELEMENTS == 0); |
| 4131 | STATIC_ASSERT(FAST_HOLEY_SMI_ELEMENTS == 1); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4132 | lbu(scratch, FieldMemOperand(map, Map::kBitField2Offset)); |
| 4133 | Branch(fail, hi, scratch, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4134 | Operand(Map::kMaximumBitField2FastHoleySmiElementValue)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4135 | } |
| 4136 | |
| 4137 | |
| 4138 | void MacroAssembler::StoreNumberToDoubleElements(Register value_reg, |
| 4139 | Register key_reg, |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4140 | Register elements_reg, |
| 4141 | Register scratch1, |
| 4142 | Register scratch2, |
| 4143 | Register scratch3, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4144 | Label* fail, |
| 4145 | int elements_offset) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4146 | DCHECK(!AreAliased(value_reg, key_reg, elements_reg, scratch1, scratch2, |
| 4147 | scratch3)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4148 | Label smi_value, maybe_nan, have_double_value, is_nan, done; |
| 4149 | Register mantissa_reg = scratch2; |
| 4150 | Register exponent_reg = scratch3; |
| 4151 | |
| 4152 | // Handle smi values specially. |
| 4153 | JumpIfSmi(value_reg, &smi_value); |
| 4154 | |
| 4155 | // Ensure that the object is a heap number |
| 4156 | CheckMap(value_reg, |
| 4157 | scratch1, |
| 4158 | Heap::kHeapNumberMapRootIndex, |
| 4159 | fail, |
| 4160 | DONT_DO_SMI_CHECK); |
| 4161 | |
| 4162 | // Check for nan: all NaN values have a value greater (signed) than 0x7ff00000 |
| 4163 | // in the exponent. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4164 | li(scratch1, Operand(kHoleNanUpper32 & HeapNumber::kExponentMask)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4165 | lw(exponent_reg, FieldMemOperand(value_reg, HeapNumber::kExponentOffset)); |
| 4166 | Branch(&maybe_nan, ge, exponent_reg, Operand(scratch1)); |
| 4167 | |
| 4168 | lw(mantissa_reg, FieldMemOperand(value_reg, HeapNumber::kMantissaOffset)); |
| 4169 | |
| 4170 | bind(&have_double_value); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 4171 | Lsa(scratch1, elements_reg, key_reg, kDoubleSizeLog2 - kSmiTagSize); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4172 | sw(mantissa_reg, |
| 4173 | FieldMemOperand(scratch1, FixedDoubleArray::kHeaderSize - elements_offset |
| 4174 | + kHoleNanLower32Offset)); |
| 4175 | sw(exponent_reg, |
| 4176 | FieldMemOperand(scratch1, FixedDoubleArray::kHeaderSize - elements_offset |
| 4177 | + kHoleNanUpper32Offset)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4178 | jmp(&done); |
| 4179 | |
| 4180 | bind(&maybe_nan); |
| 4181 | // Could be NaN or Infinity. If fraction is not zero, it's NaN, otherwise |
| 4182 | // it's an Infinity, and the non-NaN code path applies. |
| 4183 | Branch(&is_nan, gt, exponent_reg, Operand(scratch1)); |
| 4184 | lw(mantissa_reg, FieldMemOperand(value_reg, HeapNumber::kMantissaOffset)); |
| 4185 | Branch(&have_double_value, eq, mantissa_reg, Operand(zero_reg)); |
| 4186 | bind(&is_nan); |
| 4187 | // Load canonical NaN for storing into the double array. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4188 | LoadRoot(at, Heap::kNanValueRootIndex); |
| 4189 | lw(mantissa_reg, FieldMemOperand(at, HeapNumber::kMantissaOffset)); |
| 4190 | lw(exponent_reg, FieldMemOperand(at, HeapNumber::kExponentOffset)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4191 | jmp(&have_double_value); |
| 4192 | |
| 4193 | bind(&smi_value); |
| 4194 | Addu(scratch1, elements_reg, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4195 | Operand(FixedDoubleArray::kHeaderSize - kHeapObjectTag - |
| 4196 | elements_offset)); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 4197 | Lsa(scratch1, scratch1, key_reg, kDoubleSizeLog2 - kSmiTagSize); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4198 | // scratch1 is now effective address of the double element |
| 4199 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4200 | Register untagged_value = scratch2; |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4201 | SmiUntag(untagged_value, value_reg); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4202 | mtc1(untagged_value, f2); |
| 4203 | cvt_d_w(f0, f2); |
| 4204 | sdc1(f0, MemOperand(scratch1, 0)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4205 | bind(&done); |
| 4206 | } |
| 4207 | |
| 4208 | |
| 4209 | void MacroAssembler::CompareMapAndBranch(Register obj, |
| 4210 | Register scratch, |
| 4211 | Handle<Map> map, |
| 4212 | Label* early_success, |
| 4213 | Condition cond, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4214 | Label* branch_to) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4215 | lw(scratch, FieldMemOperand(obj, HeapObject::kMapOffset)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4216 | CompareMapAndBranch(scratch, map, early_success, cond, branch_to); |
| 4217 | } |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4218 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4219 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4220 | void MacroAssembler::CompareMapAndBranch(Register obj_map, |
| 4221 | Handle<Map> map, |
| 4222 | Label* early_success, |
| 4223 | Condition cond, |
| 4224 | Label* branch_to) { |
| 4225 | Branch(branch_to, cond, obj_map, Operand(map)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4226 | } |
| 4227 | |
| 4228 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4229 | void MacroAssembler::CheckMap(Register obj, |
| 4230 | Register scratch, |
| 4231 | Handle<Map> map, |
| 4232 | Label* fail, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4233 | SmiCheckType smi_check_type) { |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4234 | if (smi_check_type == DO_SMI_CHECK) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4235 | JumpIfSmi(obj, fail); |
| 4236 | } |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4237 | Label success; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4238 | CompareMapAndBranch(obj, scratch, map, &success, ne, fail); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4239 | bind(&success); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4240 | } |
| 4241 | |
| 4242 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 4243 | void MacroAssembler::DispatchWeakMap(Register obj, Register scratch1, |
| 4244 | Register scratch2, Handle<WeakCell> cell, |
| 4245 | Handle<Code> success, |
| 4246 | SmiCheckType smi_check_type) { |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4247 | Label fail; |
| 4248 | if (smi_check_type == DO_SMI_CHECK) { |
| 4249 | JumpIfSmi(obj, &fail); |
| 4250 | } |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 4251 | lw(scratch1, FieldMemOperand(obj, HeapObject::kMapOffset)); |
| 4252 | GetWeakValue(scratch2, cell); |
| 4253 | Jump(success, RelocInfo::CODE_TARGET, eq, scratch1, Operand(scratch2)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4254 | bind(&fail); |
| 4255 | } |
| 4256 | |
| 4257 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4258 | void MacroAssembler::CheckMap(Register obj, |
| 4259 | Register scratch, |
| 4260 | Heap::RootListIndex index, |
| 4261 | Label* fail, |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4262 | SmiCheckType smi_check_type) { |
| 4263 | if (smi_check_type == DO_SMI_CHECK) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4264 | JumpIfSmi(obj, fail); |
| 4265 | } |
| 4266 | lw(scratch, FieldMemOperand(obj, HeapObject::kMapOffset)); |
| 4267 | LoadRoot(at, index); |
| 4268 | Branch(fail, ne, scratch, Operand(at)); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 4269 | } |
| 4270 | |
| 4271 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 4272 | void MacroAssembler::GetWeakValue(Register value, Handle<WeakCell> cell) { |
| 4273 | li(value, Operand(cell)); |
| 4274 | lw(value, FieldMemOperand(value, WeakCell::kValueOffset)); |
| 4275 | } |
| 4276 | |
| 4277 | |
| 4278 | void MacroAssembler::LoadWeakValue(Register value, Handle<WeakCell> cell, |
| 4279 | Label* miss) { |
| 4280 | GetWeakValue(value, cell); |
| 4281 | JumpIfSmi(value, miss); |
| 4282 | } |
| 4283 | |
| 4284 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4285 | void MacroAssembler::MovFromFloatResult(DoubleRegister dst) { |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4286 | if (IsMipsSoftFloatABI) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4287 | if (kArchEndian == kLittle) { |
| 4288 | Move(dst, v0, v1); |
| 4289 | } else { |
| 4290 | Move(dst, v1, v0); |
| 4291 | } |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4292 | } else { |
| 4293 | Move(dst, f0); // Reg f0 is o32 ABI FP return value. |
| 4294 | } |
| 4295 | } |
| 4296 | |
| 4297 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4298 | void MacroAssembler::MovFromFloatParameter(DoubleRegister dst) { |
| 4299 | if (IsMipsSoftFloatABI) { |
| 4300 | if (kArchEndian == kLittle) { |
| 4301 | Move(dst, a0, a1); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4302 | } else { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4303 | Move(dst, a1, a0); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4304 | } |
| 4305 | } else { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4306 | Move(dst, f12); // Reg f12 is o32 ABI FP first argument value. |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4307 | } |
| 4308 | } |
| 4309 | |
| 4310 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4311 | void MacroAssembler::MovToFloatParameter(DoubleRegister src) { |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4312 | if (!IsMipsSoftFloatABI) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4313 | Move(f12, src); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4314 | } else { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4315 | if (kArchEndian == kLittle) { |
| 4316 | Move(a0, a1, src); |
| 4317 | } else { |
| 4318 | Move(a1, a0, src); |
| 4319 | } |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4320 | } |
| 4321 | } |
| 4322 | |
| 4323 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4324 | void MacroAssembler::MovToFloatResult(DoubleRegister src) { |
| 4325 | if (!IsMipsSoftFloatABI) { |
| 4326 | Move(f0, src); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4327 | } else { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4328 | if (kArchEndian == kLittle) { |
| 4329 | Move(v0, v1, src); |
| 4330 | } else { |
| 4331 | Move(v1, v0, src); |
| 4332 | } |
| 4333 | } |
| 4334 | } |
| 4335 | |
| 4336 | |
| 4337 | void MacroAssembler::MovToFloatParameters(DoubleRegister src1, |
| 4338 | DoubleRegister src2) { |
| 4339 | if (!IsMipsSoftFloatABI) { |
| 4340 | if (src2.is(f12)) { |
| 4341 | DCHECK(!src1.is(f14)); |
| 4342 | Move(f14, src2); |
| 4343 | Move(f12, src1); |
| 4344 | } else { |
| 4345 | Move(f12, src1); |
| 4346 | Move(f14, src2); |
| 4347 | } |
| 4348 | } else { |
| 4349 | if (kArchEndian == kLittle) { |
| 4350 | Move(a0, a1, src1); |
| 4351 | Move(a2, a3, src2); |
| 4352 | } else { |
| 4353 | Move(a1, a0, src1); |
| 4354 | Move(a3, a2, src2); |
| 4355 | } |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4356 | } |
| 4357 | } |
| 4358 | |
| 4359 | |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 4360 | // ----------------------------------------------------------------------------- |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4361 | // JavaScript invokes. |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 4362 | |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame^] | 4363 | void MacroAssembler::PrepareForTailCall(const ParameterCount& callee_args_count, |
| 4364 | Register caller_args_count_reg, |
| 4365 | Register scratch0, Register scratch1) { |
| 4366 | #if DEBUG |
| 4367 | if (callee_args_count.is_reg()) { |
| 4368 | DCHECK(!AreAliased(callee_args_count.reg(), caller_args_count_reg, scratch0, |
| 4369 | scratch1)); |
| 4370 | } else { |
| 4371 | DCHECK(!AreAliased(caller_args_count_reg, scratch0, scratch1)); |
| 4372 | } |
| 4373 | #endif |
| 4374 | |
| 4375 | // Calculate the end of destination area where we will put the arguments |
| 4376 | // after we drop current frame. We add kPointerSize to count the receiver |
| 4377 | // argument which is not included into formal parameters count. |
| 4378 | Register dst_reg = scratch0; |
| 4379 | Lsa(dst_reg, fp, caller_args_count_reg, kPointerSizeLog2); |
| 4380 | Addu(dst_reg, dst_reg, |
| 4381 | Operand(StandardFrameConstants::kCallerSPOffset + kPointerSize)); |
| 4382 | |
| 4383 | Register src_reg = caller_args_count_reg; |
| 4384 | // Calculate the end of source area. +kPointerSize is for the receiver. |
| 4385 | if (callee_args_count.is_reg()) { |
| 4386 | Lsa(src_reg, sp, callee_args_count.reg(), kPointerSizeLog2); |
| 4387 | Addu(src_reg, src_reg, Operand(kPointerSize)); |
| 4388 | } else { |
| 4389 | Addu(src_reg, sp, |
| 4390 | Operand((callee_args_count.immediate() + 1) * kPointerSize)); |
| 4391 | } |
| 4392 | |
| 4393 | if (FLAG_debug_code) { |
| 4394 | Check(lo, kStackAccessBelowStackPointer, src_reg, Operand(dst_reg)); |
| 4395 | } |
| 4396 | |
| 4397 | // Restore caller's frame pointer and return address now as they will be |
| 4398 | // overwritten by the copying loop. |
| 4399 | lw(ra, MemOperand(fp, StandardFrameConstants::kCallerPCOffset)); |
| 4400 | lw(fp, MemOperand(fp, StandardFrameConstants::kCallerFPOffset)); |
| 4401 | |
| 4402 | // Now copy callee arguments to the caller frame going backwards to avoid |
| 4403 | // callee arguments corruption (source and destination areas could overlap). |
| 4404 | |
| 4405 | // Both src_reg and dst_reg are pointing to the word after the one to copy, |
| 4406 | // so they must be pre-decremented in the loop. |
| 4407 | Register tmp_reg = scratch1; |
| 4408 | Label loop, entry; |
| 4409 | Branch(&entry); |
| 4410 | bind(&loop); |
| 4411 | Subu(src_reg, src_reg, Operand(kPointerSize)); |
| 4412 | Subu(dst_reg, dst_reg, Operand(kPointerSize)); |
| 4413 | lw(tmp_reg, MemOperand(src_reg)); |
| 4414 | sw(tmp_reg, MemOperand(dst_reg)); |
| 4415 | bind(&entry); |
| 4416 | Branch(&loop, ne, sp, Operand(src_reg)); |
| 4417 | |
| 4418 | // Leave current frame. |
| 4419 | mov(sp, dst_reg); |
| 4420 | } |
| 4421 | |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 4422 | void MacroAssembler::InvokePrologue(const ParameterCount& expected, |
| 4423 | const ParameterCount& actual, |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 4424 | Label* done, |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4425 | bool* definitely_mismatches, |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4426 | InvokeFlag flag, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4427 | const CallWrapper& call_wrapper) { |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 4428 | bool definitely_matches = false; |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4429 | *definitely_mismatches = false; |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 4430 | Label regular_invoke; |
| 4431 | |
| 4432 | // Check whether the expected and actual arguments count match. If not, |
| 4433 | // setup registers according to contract with ArgumentsAdaptorTrampoline: |
| 4434 | // a0: actual arguments count |
| 4435 | // a1: function (passed through to callee) |
| 4436 | // a2: expected arguments count |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 4437 | |
| 4438 | // The code below is made a lot easier because the calling code already sets |
| 4439 | // up actual and expected registers according to the contract if values are |
| 4440 | // passed in registers. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4441 | DCHECK(actual.is_immediate() || actual.reg().is(a0)); |
| 4442 | DCHECK(expected.is_immediate() || expected.reg().is(a2)); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 4443 | |
| 4444 | if (expected.is_immediate()) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4445 | DCHECK(actual.is_immediate()); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4446 | li(a0, Operand(actual.immediate())); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 4447 | if (expected.immediate() == actual.immediate()) { |
| 4448 | definitely_matches = true; |
| 4449 | } else { |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 4450 | const int sentinel = SharedFunctionInfo::kDontAdaptArgumentsSentinel; |
| 4451 | if (expected.immediate() == sentinel) { |
| 4452 | // Don't worry about adapting arguments for builtins that |
| 4453 | // don't want that done. Skip adaption code by making it look |
| 4454 | // like we have a match between expected and actual number of |
| 4455 | // arguments. |
| 4456 | definitely_matches = true; |
| 4457 | } else { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4458 | *definitely_mismatches = true; |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 4459 | li(a2, Operand(expected.immediate())); |
| 4460 | } |
| 4461 | } |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4462 | } else if (actual.is_immediate()) { |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4463 | li(a0, Operand(actual.immediate())); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4464 | Branch(®ular_invoke, eq, expected.reg(), Operand(a0)); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 4465 | } else { |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4466 | Branch(®ular_invoke, eq, expected.reg(), Operand(actual.reg())); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 4467 | } |
| 4468 | |
| 4469 | if (!definitely_matches) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4470 | Handle<Code> adaptor = |
| 4471 | isolate()->builtins()->ArgumentsAdaptorTrampoline(); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 4472 | if (flag == CALL_FUNCTION) { |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 4473 | call_wrapper.BeforeCall(CallSize(adaptor)); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 4474 | Call(adaptor); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4475 | call_wrapper.AfterCall(); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4476 | if (!*definitely_mismatches) { |
| 4477 | Branch(done); |
| 4478 | } |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 4479 | } else { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4480 | Jump(adaptor, RelocInfo::CODE_TARGET); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 4481 | } |
| 4482 | bind(®ular_invoke); |
| 4483 | } |
| 4484 | } |
| 4485 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4486 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4487 | void MacroAssembler::FloodFunctionIfStepping(Register fun, Register new_target, |
| 4488 | const ParameterCount& expected, |
| 4489 | const ParameterCount& actual) { |
| 4490 | Label skip_flooding; |
| 4491 | ExternalReference step_in_enabled = |
| 4492 | ExternalReference::debug_step_in_enabled_address(isolate()); |
| 4493 | li(t0, Operand(step_in_enabled)); |
| 4494 | lb(t0, MemOperand(t0)); |
| 4495 | Branch(&skip_flooding, eq, t0, Operand(zero_reg)); |
| 4496 | { |
| 4497 | FrameScope frame(this, |
| 4498 | has_frame() ? StackFrame::NONE : StackFrame::INTERNAL); |
| 4499 | if (expected.is_reg()) { |
| 4500 | SmiTag(expected.reg()); |
| 4501 | Push(expected.reg()); |
| 4502 | } |
| 4503 | if (actual.is_reg()) { |
| 4504 | SmiTag(actual.reg()); |
| 4505 | Push(actual.reg()); |
| 4506 | } |
| 4507 | if (new_target.is_valid()) { |
| 4508 | Push(new_target); |
| 4509 | } |
| 4510 | Push(fun); |
| 4511 | Push(fun); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 4512 | CallRuntime(Runtime::kDebugPrepareStepInIfStepping); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4513 | Pop(fun); |
| 4514 | if (new_target.is_valid()) { |
| 4515 | Pop(new_target); |
| 4516 | } |
| 4517 | if (actual.is_reg()) { |
| 4518 | Pop(actual.reg()); |
| 4519 | SmiUntag(actual.reg()); |
| 4520 | } |
| 4521 | if (expected.is_reg()) { |
| 4522 | Pop(expected.reg()); |
| 4523 | SmiUntag(expected.reg()); |
| 4524 | } |
| 4525 | } |
| 4526 | bind(&skip_flooding); |
| 4527 | } |
| 4528 | |
| 4529 | |
| 4530 | void MacroAssembler::InvokeFunctionCode(Register function, Register new_target, |
| 4531 | const ParameterCount& expected, |
| 4532 | const ParameterCount& actual, |
| 4533 | InvokeFlag flag, |
| 4534 | const CallWrapper& call_wrapper) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4535 | // You can't call a function without a valid frame. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4536 | DCHECK(flag == JUMP_FUNCTION || has_frame()); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4537 | DCHECK(function.is(a1)); |
| 4538 | DCHECK_IMPLIES(new_target.is_valid(), new_target.is(a3)); |
| 4539 | |
| 4540 | if (call_wrapper.NeedsDebugStepCheck()) { |
| 4541 | FloodFunctionIfStepping(function, new_target, expected, actual); |
| 4542 | } |
| 4543 | |
| 4544 | // Clear the new.target register if not given. |
| 4545 | if (!new_target.is_valid()) { |
| 4546 | LoadRoot(a3, Heap::kUndefinedValueRootIndex); |
| 4547 | } |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4548 | |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 4549 | Label done; |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4550 | bool definitely_mismatches = false; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4551 | InvokePrologue(expected, actual, &done, &definitely_mismatches, flag, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4552 | call_wrapper); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4553 | if (!definitely_mismatches) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4554 | // We call indirectly through the code field in the function to |
| 4555 | // allow recompilation to take effect without changing any of the |
| 4556 | // call sites. |
| 4557 | Register code = t0; |
| 4558 | lw(code, FieldMemOperand(function, JSFunction::kCodeEntryOffset)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4559 | if (flag == CALL_FUNCTION) { |
| 4560 | call_wrapper.BeforeCall(CallSize(code)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4561 | Call(code); |
| 4562 | call_wrapper.AfterCall(); |
| 4563 | } else { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4564 | DCHECK(flag == JUMP_FUNCTION); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4565 | Jump(code); |
| 4566 | } |
| 4567 | // Continue here if InvokePrologue does handle the invocation due to |
| 4568 | // mismatched parameter counts. |
| 4569 | bind(&done); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 4570 | } |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 4571 | } |
| 4572 | |
| 4573 | |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 4574 | void MacroAssembler::InvokeFunction(Register function, |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4575 | Register new_target, |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 4576 | const ParameterCount& actual, |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4577 | InvokeFlag flag, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4578 | const CallWrapper& call_wrapper) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4579 | // You can't call a function without a valid frame. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4580 | DCHECK(flag == JUMP_FUNCTION || has_frame()); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4581 | |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 4582 | // Contract with called JS functions requires that function is passed in a1. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4583 | DCHECK(function.is(a1)); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 4584 | Register expected_reg = a2; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4585 | Register temp_reg = t0; |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 4586 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4587 | lw(temp_reg, FieldMemOperand(a1, JSFunction::kSharedFunctionInfoOffset)); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 4588 | lw(cp, FieldMemOperand(a1, JSFunction::kContextOffset)); |
| 4589 | lw(expected_reg, |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4590 | FieldMemOperand(temp_reg, |
| 4591 | SharedFunctionInfo::kFormalParameterCountOffset)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4592 | sra(expected_reg, expected_reg, kSmiTagSize); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 4593 | |
| 4594 | ParameterCount expected(expected_reg); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4595 | InvokeFunctionCode(function, new_target, expected, actual, flag, |
| 4596 | call_wrapper); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4597 | } |
| 4598 | |
| 4599 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4600 | void MacroAssembler::InvokeFunction(Register function, |
| 4601 | const ParameterCount& expected, |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4602 | const ParameterCount& actual, |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 4603 | InvokeFlag flag, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4604 | const CallWrapper& call_wrapper) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4605 | // You can't call a function without a valid frame. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4606 | DCHECK(flag == JUMP_FUNCTION || has_frame()); |
| 4607 | |
| 4608 | // Contract with called JS functions requires that function is passed in a1. |
| 4609 | DCHECK(function.is(a1)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4610 | |
| 4611 | // Get the function and setup the context. |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4612 | lw(cp, FieldMemOperand(a1, JSFunction::kContextOffset)); |
| 4613 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4614 | InvokeFunctionCode(a1, no_reg, expected, actual, flag, call_wrapper); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4615 | } |
| 4616 | |
| 4617 | |
| 4618 | void MacroAssembler::InvokeFunction(Handle<JSFunction> function, |
| 4619 | const ParameterCount& expected, |
| 4620 | const ParameterCount& actual, |
| 4621 | InvokeFlag flag, |
| 4622 | const CallWrapper& call_wrapper) { |
| 4623 | li(a1, function); |
| 4624 | InvokeFunction(a1, expected, actual, flag, call_wrapper); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4625 | } |
| 4626 | |
| 4627 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4628 | void MacroAssembler::IsObjectJSStringType(Register object, |
| 4629 | Register scratch, |
| 4630 | Label* fail) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4631 | DCHECK(kNotStringTag != 0); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4632 | |
| 4633 | lw(scratch, FieldMemOperand(object, HeapObject::kMapOffset)); |
| 4634 | lbu(scratch, FieldMemOperand(scratch, Map::kInstanceTypeOffset)); |
| 4635 | And(scratch, scratch, Operand(kIsNotStringMask)); |
| 4636 | Branch(fail, ne, scratch, Operand(zero_reg)); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 4637 | } |
| 4638 | |
| 4639 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4640 | void MacroAssembler::IsObjectNameType(Register object, |
| 4641 | Register scratch, |
| 4642 | Label* fail) { |
| 4643 | lw(scratch, FieldMemOperand(object, HeapObject::kMapOffset)); |
| 4644 | lbu(scratch, FieldMemOperand(scratch, Map::kInstanceTypeOffset)); |
| 4645 | Branch(fail, hi, scratch, Operand(LAST_NAME_TYPE)); |
| 4646 | } |
| 4647 | |
| 4648 | |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 4649 | // --------------------------------------------------------------------------- |
| 4650 | // Support functions. |
| 4651 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4652 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4653 | void MacroAssembler::GetMapConstructor(Register result, Register map, |
| 4654 | Register temp, Register temp2) { |
| 4655 | Label done, loop; |
| 4656 | lw(result, FieldMemOperand(map, Map::kConstructorOrBackPointerOffset)); |
| 4657 | bind(&loop); |
| 4658 | JumpIfSmi(result, &done); |
| 4659 | GetObjectType(result, temp, temp2); |
| 4660 | Branch(&done, ne, temp2, Operand(MAP_TYPE)); |
| 4661 | lw(result, FieldMemOperand(result, Map::kConstructorOrBackPointerOffset)); |
| 4662 | Branch(&loop); |
| 4663 | bind(&done); |
| 4664 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4665 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4666 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4667 | void MacroAssembler::TryGetFunctionPrototype(Register function, Register result, |
| 4668 | Register scratch, Label* miss) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4669 | // Get the prototype or initial map from the function. |
| 4670 | lw(result, |
| 4671 | FieldMemOperand(function, JSFunction::kPrototypeOrInitialMapOffset)); |
| 4672 | |
| 4673 | // If the prototype or initial map is the hole, don't return it and |
| 4674 | // simply miss the cache instead. This will allow us to allocate a |
| 4675 | // prototype object on-demand in the runtime system. |
| 4676 | LoadRoot(t8, Heap::kTheHoleValueRootIndex); |
| 4677 | Branch(miss, eq, result, Operand(t8)); |
| 4678 | |
| 4679 | // If the function does not have an initial map, we're done. |
| 4680 | Label done; |
| 4681 | GetObjectType(result, scratch, scratch); |
| 4682 | Branch(&done, ne, scratch, Operand(MAP_TYPE)); |
| 4683 | |
| 4684 | // Get the prototype from the initial map. |
| 4685 | lw(result, FieldMemOperand(result, Map::kPrototypeOffset)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4686 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4687 | // All done. |
| 4688 | bind(&done); |
| 4689 | } |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 4690 | |
| 4691 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4692 | void MacroAssembler::GetObjectType(Register object, |
| 4693 | Register map, |
| 4694 | Register type_reg) { |
| 4695 | lw(map, FieldMemOperand(object, HeapObject::kMapOffset)); |
| 4696 | lbu(type_reg, FieldMemOperand(map, Map::kInstanceTypeOffset)); |
| 4697 | } |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 4698 | |
| 4699 | |
| 4700 | // ----------------------------------------------------------------------------- |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4701 | // Runtime calls. |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 4702 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4703 | void MacroAssembler::CallStub(CodeStub* stub, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4704 | TypeFeedbackId ast_id, |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4705 | Condition cond, |
| 4706 | Register r1, |
| 4707 | const Operand& r2, |
| 4708 | BranchDelaySlot bd) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4709 | DCHECK(AllowThisStubCall(stub)); // Stub calls are not allowed in some stubs. |
| 4710 | Call(stub->GetCode(), RelocInfo::CODE_TARGET, ast_id, |
| 4711 | cond, r1, r2, bd); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 4712 | } |
| 4713 | |
| 4714 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4715 | void MacroAssembler::TailCallStub(CodeStub* stub, |
| 4716 | Condition cond, |
| 4717 | Register r1, |
| 4718 | const Operand& r2, |
| 4719 | BranchDelaySlot bd) { |
| 4720 | Jump(stub->GetCode(), RelocInfo::CODE_TARGET, cond, r1, r2, bd); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 4721 | } |
| 4722 | |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 4723 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4724 | bool MacroAssembler::AllowThisStubCall(CodeStub* stub) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4725 | return has_frame_ || !stub->SometimesSetsUpAFrame(); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4726 | } |
| 4727 | |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 4728 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4729 | void MacroAssembler::IndexFromHash(Register hash, Register index) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4730 | // If the hash field contains an array index pick it out. The assert checks |
| 4731 | // that the constants for the maximum number of digits for an array index |
| 4732 | // cached in the hash field and the number of bits reserved for it does not |
| 4733 | // conflict. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4734 | DCHECK(TenToThe(String::kMaxCachedArrayIndexLength) < |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4735 | (1 << String::kArrayIndexValueBits)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4736 | DecodeFieldToSmi<String::ArrayIndexValueBits>(index, hash); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4737 | } |
| 4738 | |
| 4739 | |
| 4740 | void MacroAssembler::ObjectToDoubleFPURegister(Register object, |
| 4741 | FPURegister result, |
| 4742 | Register scratch1, |
| 4743 | Register scratch2, |
| 4744 | Register heap_number_map, |
| 4745 | Label* not_number, |
| 4746 | ObjectToDoubleFlags flags) { |
| 4747 | Label done; |
| 4748 | if ((flags & OBJECT_NOT_SMI) == 0) { |
| 4749 | Label not_smi; |
| 4750 | JumpIfNotSmi(object, ¬_smi); |
| 4751 | // Remove smi tag and convert to double. |
| 4752 | sra(scratch1, object, kSmiTagSize); |
| 4753 | mtc1(scratch1, result); |
| 4754 | cvt_d_w(result, result); |
| 4755 | Branch(&done); |
| 4756 | bind(¬_smi); |
| 4757 | } |
| 4758 | // Check for heap number and load double value from it. |
| 4759 | lw(scratch1, FieldMemOperand(object, HeapObject::kMapOffset)); |
| 4760 | Branch(not_number, ne, scratch1, Operand(heap_number_map)); |
| 4761 | |
| 4762 | if ((flags & AVOID_NANS_AND_INFINITIES) != 0) { |
| 4763 | // If exponent is all ones the number is either a NaN or +/-Infinity. |
| 4764 | Register exponent = scratch1; |
| 4765 | Register mask_reg = scratch2; |
| 4766 | lw(exponent, FieldMemOperand(object, HeapNumber::kExponentOffset)); |
| 4767 | li(mask_reg, HeapNumber::kExponentMask); |
| 4768 | |
| 4769 | And(exponent, exponent, mask_reg); |
| 4770 | Branch(not_number, eq, exponent, Operand(mask_reg)); |
| 4771 | } |
| 4772 | ldc1(result, FieldMemOperand(object, HeapNumber::kValueOffset)); |
| 4773 | bind(&done); |
| 4774 | } |
| 4775 | |
| 4776 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4777 | void MacroAssembler::SmiToDoubleFPURegister(Register smi, |
| 4778 | FPURegister value, |
| 4779 | Register scratch1) { |
| 4780 | sra(scratch1, smi, kSmiTagSize); |
| 4781 | mtc1(scratch1, value); |
| 4782 | cvt_d_w(value, value); |
| 4783 | } |
| 4784 | |
| 4785 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4786 | static inline void BranchOvfHelper(MacroAssembler* masm, Register overflow_dst, |
| 4787 | Label* overflow_label, |
| 4788 | Label* no_overflow_label) { |
| 4789 | DCHECK(overflow_label || no_overflow_label); |
| 4790 | if (!overflow_label) { |
| 4791 | DCHECK(no_overflow_label); |
| 4792 | masm->Branch(no_overflow_label, ge, overflow_dst, Operand(zero_reg)); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 4793 | } else { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4794 | masm->Branch(overflow_label, lt, overflow_dst, Operand(zero_reg)); |
| 4795 | if (no_overflow_label) masm->Branch(no_overflow_label); |
| 4796 | } |
| 4797 | } |
| 4798 | |
| 4799 | |
| 4800 | void MacroAssembler::AddBranchOvf(Register dst, Register left, |
| 4801 | const Operand& right, Label* overflow_label, |
| 4802 | Label* no_overflow_label, Register scratch) { |
| 4803 | if (right.is_reg()) { |
| 4804 | AddBranchOvf(dst, left, right.rm(), overflow_label, no_overflow_label, |
| 4805 | scratch); |
| 4806 | } else { |
| 4807 | if (IsMipsArchVariant(kMips32r6)) { |
| 4808 | Register right_reg = t9; |
| 4809 | DCHECK(!left.is(right_reg)); |
| 4810 | li(right_reg, Operand(right)); |
| 4811 | AddBranchOvf(dst, left, right_reg, overflow_label, no_overflow_label); |
| 4812 | } else { |
| 4813 | Register overflow_dst = t9; |
| 4814 | DCHECK(!dst.is(scratch)); |
| 4815 | DCHECK(!dst.is(overflow_dst)); |
| 4816 | DCHECK(!scratch.is(overflow_dst)); |
| 4817 | DCHECK(!left.is(overflow_dst)); |
| 4818 | if (dst.is(left)) { |
| 4819 | mov(scratch, left); // Preserve left. |
| 4820 | Addu(dst, left, right.immediate()); // Left is overwritten. |
| 4821 | xor_(scratch, dst, scratch); // Original left. |
| 4822 | // Load right since xori takes uint16 as immediate. |
| 4823 | Addu(overflow_dst, zero_reg, right); |
| 4824 | xor_(overflow_dst, dst, overflow_dst); |
| 4825 | and_(overflow_dst, overflow_dst, scratch); |
| 4826 | } else { |
| 4827 | Addu(dst, left, right.immediate()); |
| 4828 | xor_(overflow_dst, dst, left); |
| 4829 | // Load right since xori takes uint16 as immediate. |
| 4830 | Addu(scratch, zero_reg, right); |
| 4831 | xor_(scratch, dst, scratch); |
| 4832 | and_(overflow_dst, scratch, overflow_dst); |
| 4833 | } |
| 4834 | BranchOvfHelper(this, overflow_dst, overflow_label, no_overflow_label); |
| 4835 | } |
| 4836 | } |
| 4837 | } |
| 4838 | |
| 4839 | |
| 4840 | void MacroAssembler::AddBranchOvf(Register dst, Register left, Register right, |
| 4841 | Label* overflow_label, |
| 4842 | Label* no_overflow_label, Register scratch) { |
| 4843 | if (IsMipsArchVariant(kMips32r6)) { |
| 4844 | if (!overflow_label) { |
| 4845 | DCHECK(no_overflow_label); |
| 4846 | DCHECK(!dst.is(scratch)); |
| 4847 | Register left_reg = left.is(dst) ? scratch : left; |
| 4848 | Register right_reg = right.is(dst) ? t9 : right; |
| 4849 | DCHECK(!dst.is(left_reg)); |
| 4850 | DCHECK(!dst.is(right_reg)); |
| 4851 | Move(left_reg, left); |
| 4852 | Move(right_reg, right); |
| 4853 | addu(dst, left, right); |
| 4854 | bnvc(left_reg, right_reg, no_overflow_label); |
| 4855 | } else { |
| 4856 | bovc(left, right, overflow_label); |
| 4857 | addu(dst, left, right); |
| 4858 | if (no_overflow_label) bc(no_overflow_label); |
| 4859 | } |
| 4860 | } else { |
| 4861 | Register overflow_dst = t9; |
| 4862 | DCHECK(!dst.is(scratch)); |
| 4863 | DCHECK(!dst.is(overflow_dst)); |
| 4864 | DCHECK(!scratch.is(overflow_dst)); |
| 4865 | DCHECK(!left.is(overflow_dst)); |
| 4866 | DCHECK(!right.is(overflow_dst)); |
| 4867 | DCHECK(!left.is(scratch)); |
| 4868 | DCHECK(!right.is(scratch)); |
| 4869 | |
| 4870 | if (left.is(right) && dst.is(left)) { |
| 4871 | mov(overflow_dst, right); |
| 4872 | right = overflow_dst; |
| 4873 | } |
| 4874 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 4875 | if (dst.is(left)) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4876 | mov(scratch, left); // Preserve left. |
| 4877 | addu(dst, left, right); // Left is overwritten. |
| 4878 | xor_(scratch, dst, scratch); // Original left. |
| 4879 | xor_(overflow_dst, dst, right); |
| 4880 | and_(overflow_dst, overflow_dst, scratch); |
| 4881 | } else if (dst.is(right)) { |
| 4882 | mov(scratch, right); // Preserve right. |
| 4883 | addu(dst, left, right); // Right is overwritten. |
| 4884 | xor_(scratch, dst, scratch); // Original right. |
| 4885 | xor_(overflow_dst, dst, left); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 4886 | and_(overflow_dst, overflow_dst, scratch); |
| 4887 | } else { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4888 | addu(dst, left, right); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 4889 | xor_(overflow_dst, dst, left); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4890 | xor_(scratch, dst, right); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 4891 | and_(overflow_dst, scratch, overflow_dst); |
| 4892 | } |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4893 | BranchOvfHelper(this, overflow_dst, overflow_label, no_overflow_label); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 4894 | } |
| 4895 | } |
| 4896 | |
| 4897 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4898 | void MacroAssembler::SubBranchOvf(Register dst, Register left, |
| 4899 | const Operand& right, Label* overflow_label, |
| 4900 | Label* no_overflow_label, Register scratch) { |
| 4901 | DCHECK(overflow_label || no_overflow_label); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 4902 | if (right.is_reg()) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4903 | SubBranchOvf(dst, left, right.rm(), overflow_label, no_overflow_label, |
| 4904 | scratch); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 4905 | } else { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4906 | Register overflow_dst = t9; |
| 4907 | DCHECK(!dst.is(scratch)); |
| 4908 | DCHECK(!dst.is(overflow_dst)); |
| 4909 | DCHECK(!scratch.is(overflow_dst)); |
| 4910 | DCHECK(!left.is(overflow_dst)); |
| 4911 | DCHECK(!left.is(scratch)); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 4912 | if (dst.is(left)) { |
| 4913 | mov(scratch, left); // Preserve left. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4914 | Subu(dst, left, right.immediate()); // Left is overwritten. |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 4915 | // Load right since xori takes uint16 as immediate. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4916 | Addu(overflow_dst, zero_reg, right); |
| 4917 | xor_(overflow_dst, scratch, overflow_dst); // scratch is original left. |
| 4918 | xor_(scratch, dst, scratch); // scratch is original left. |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 4919 | and_(overflow_dst, scratch, overflow_dst); |
| 4920 | } else { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4921 | Subu(dst, left, right); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 4922 | xor_(overflow_dst, dst, left); |
| 4923 | // Load right since xori takes uint16 as immediate. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4924 | Addu(scratch, zero_reg, right); |
| 4925 | xor_(scratch, left, scratch); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 4926 | and_(overflow_dst, scratch, overflow_dst); |
| 4927 | } |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4928 | BranchOvfHelper(this, overflow_dst, overflow_label, no_overflow_label); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 4929 | } |
| 4930 | } |
| 4931 | |
| 4932 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4933 | void MacroAssembler::SubBranchOvf(Register dst, Register left, Register right, |
| 4934 | Label* overflow_label, |
| 4935 | Label* no_overflow_label, Register scratch) { |
| 4936 | DCHECK(overflow_label || no_overflow_label); |
| 4937 | Register overflow_dst = t9; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4938 | DCHECK(!dst.is(scratch)); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4939 | DCHECK(!dst.is(overflow_dst)); |
| 4940 | DCHECK(!scratch.is(overflow_dst)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4941 | DCHECK(!overflow_dst.is(left)); |
| 4942 | DCHECK(!overflow_dst.is(right)); |
| 4943 | DCHECK(!scratch.is(left)); |
| 4944 | DCHECK(!scratch.is(right)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4945 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4946 | // This happens with some crankshaft code. Since Subu works fine if |
| 4947 | // left == right, let's not make that restriction here. |
| 4948 | if (left.is(right)) { |
| 4949 | mov(dst, zero_reg); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4950 | if (no_overflow_label) { |
| 4951 | Branch(no_overflow_label); |
| 4952 | } |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4953 | } |
| 4954 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4955 | if (dst.is(left)) { |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 4956 | mov(scratch, left); // Preserve left. |
| 4957 | subu(dst, left, right); // Left is overwritten. |
| 4958 | xor_(overflow_dst, dst, scratch); // scratch is original left. |
| 4959 | xor_(scratch, scratch, right); // scratch is original left. |
| 4960 | and_(overflow_dst, scratch, overflow_dst); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4961 | } else if (dst.is(right)) { |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 4962 | mov(scratch, right); // Preserve right. |
| 4963 | subu(dst, left, right); // Right is overwritten. |
| 4964 | xor_(overflow_dst, dst, left); |
| 4965 | xor_(scratch, left, scratch); // Original right. |
| 4966 | and_(overflow_dst, scratch, overflow_dst); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4967 | } else { |
| 4968 | subu(dst, left, right); |
| 4969 | xor_(overflow_dst, dst, left); |
| 4970 | xor_(scratch, left, right); |
| 4971 | and_(overflow_dst, scratch, overflow_dst); |
| 4972 | } |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4973 | BranchOvfHelper(this, overflow_dst, overflow_label, no_overflow_label); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4974 | } |
| 4975 | |
| 4976 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4977 | void MacroAssembler::CallRuntime(const Runtime::Function* f, int num_arguments, |
| 4978 | SaveFPRegsMode save_doubles, |
| 4979 | BranchDelaySlot bd) { |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 4980 | // All parameters are on the stack. v0 has the return value after call. |
| 4981 | |
| 4982 | // If the expected number of arguments of the runtime function is |
| 4983 | // constant, we check that the actual number of arguments match the |
| 4984 | // expectation. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4985 | CHECK(f->nargs < 0 || f->nargs == num_arguments); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 4986 | |
| 4987 | // TODO(1236192): Most runtime routines don't need the number of |
| 4988 | // arguments passed in because it is constant. At some point we |
| 4989 | // should remove this need and make the runtime routine entry code |
| 4990 | // smarter. |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4991 | PrepareCEntryArgs(num_arguments); |
| 4992 | PrepareCEntryFunction(ExternalReference(f, isolate())); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4993 | CEntryStub stub(isolate(), 1, save_doubles); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4994 | CallStub(&stub, TypeFeedbackId::None(), al, zero_reg, Operand(zero_reg), bd); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 4995 | } |
| 4996 | |
| 4997 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4998 | void MacroAssembler::CallExternalReference(const ExternalReference& ext, |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4999 | int num_arguments, |
| 5000 | BranchDelaySlot bd) { |
| 5001 | PrepareCEntryArgs(num_arguments); |
| 5002 | PrepareCEntryFunction(ext); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5003 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5004 | CEntryStub stub(isolate(), 1); |
| 5005 | CallStub(&stub, TypeFeedbackId::None(), al, zero_reg, Operand(zero_reg), bd); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5006 | } |
| 5007 | |
| 5008 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 5009 | void MacroAssembler::TailCallRuntime(Runtime::FunctionId fid) { |
| 5010 | const Runtime::Function* function = Runtime::FunctionForId(fid); |
| 5011 | DCHECK_EQ(1, function->result_size); |
| 5012 | if (function->nargs >= 0) { |
| 5013 | PrepareCEntryArgs(function->nargs); |
| 5014 | } |
| 5015 | JumpToExternalReference(ExternalReference(fid, isolate())); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 5016 | } |
| 5017 | |
| 5018 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5019 | void MacroAssembler::JumpToExternalReference(const ExternalReference& builtin, |
| 5020 | BranchDelaySlot bd) { |
| 5021 | PrepareCEntryFunction(builtin); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5022 | CEntryStub stub(isolate(), 1); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5023 | Jump(stub.GetCode(), |
| 5024 | RelocInfo::CODE_TARGET, |
| 5025 | al, |
| 5026 | zero_reg, |
| 5027 | Operand(zero_reg), |
| 5028 | bd); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 5029 | } |
| 5030 | |
| 5031 | |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 5032 | void MacroAssembler::SetCounter(StatsCounter* counter, int value, |
| 5033 | Register scratch1, Register scratch2) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5034 | if (FLAG_native_code_counters && counter->Enabled()) { |
| 5035 | li(scratch1, Operand(value)); |
| 5036 | li(scratch2, Operand(ExternalReference(counter))); |
| 5037 | sw(scratch1, MemOperand(scratch2)); |
| 5038 | } |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 5039 | } |
| 5040 | |
| 5041 | |
| 5042 | void MacroAssembler::IncrementCounter(StatsCounter* counter, int value, |
| 5043 | Register scratch1, Register scratch2) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5044 | DCHECK(value > 0); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5045 | if (FLAG_native_code_counters && counter->Enabled()) { |
| 5046 | li(scratch2, Operand(ExternalReference(counter))); |
| 5047 | lw(scratch1, MemOperand(scratch2)); |
| 5048 | Addu(scratch1, scratch1, Operand(value)); |
| 5049 | sw(scratch1, MemOperand(scratch2)); |
| 5050 | } |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 5051 | } |
| 5052 | |
| 5053 | |
| 5054 | void MacroAssembler::DecrementCounter(StatsCounter* counter, int value, |
| 5055 | Register scratch1, Register scratch2) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5056 | DCHECK(value > 0); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5057 | if (FLAG_native_code_counters && counter->Enabled()) { |
| 5058 | li(scratch2, Operand(ExternalReference(counter))); |
| 5059 | lw(scratch1, MemOperand(scratch2)); |
| 5060 | Subu(scratch1, scratch1, Operand(value)); |
| 5061 | sw(scratch1, MemOperand(scratch2)); |
| 5062 | } |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 5063 | } |
| 5064 | |
| 5065 | |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 5066 | // ----------------------------------------------------------------------------- |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 5067 | // Debugging. |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 5068 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5069 | void MacroAssembler::Assert(Condition cc, BailoutReason reason, |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 5070 | Register rs, Operand rt) { |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 5071 | if (emit_debug_code()) |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5072 | Check(cc, reason, rs, rt); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5073 | } |
| 5074 | |
| 5075 | |
| 5076 | void MacroAssembler::AssertFastElements(Register elements) { |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 5077 | if (emit_debug_code()) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5078 | DCHECK(!elements.is(at)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5079 | Label ok; |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 5080 | push(elements); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5081 | lw(elements, FieldMemOperand(elements, HeapObject::kMapOffset)); |
| 5082 | LoadRoot(at, Heap::kFixedArrayMapRootIndex); |
| 5083 | Branch(&ok, eq, elements, Operand(at)); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 5084 | LoadRoot(at, Heap::kFixedDoubleArrayMapRootIndex); |
| 5085 | Branch(&ok, eq, elements, Operand(at)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5086 | LoadRoot(at, Heap::kFixedCOWArrayMapRootIndex); |
| 5087 | Branch(&ok, eq, elements, Operand(at)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5088 | Abort(kJSObjectWithFastElementsMapHasSlowElements); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5089 | bind(&ok); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 5090 | pop(elements); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5091 | } |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 5092 | } |
| 5093 | |
| 5094 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5095 | void MacroAssembler::Check(Condition cc, BailoutReason reason, |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 5096 | Register rs, Operand rt) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5097 | Label L; |
| 5098 | Branch(&L, cc, rs, rt); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5099 | Abort(reason); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 5100 | // Will not return here. |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5101 | bind(&L); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 5102 | } |
| 5103 | |
| 5104 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5105 | void MacroAssembler::Abort(BailoutReason reason) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5106 | Label abort_start; |
| 5107 | bind(&abort_start); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5108 | #ifdef DEBUG |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5109 | const char* msg = GetBailoutReason(reason); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5110 | if (msg != NULL) { |
| 5111 | RecordComment("Abort message: "); |
| 5112 | RecordComment(msg); |
| 5113 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5114 | |
| 5115 | if (FLAG_trap_on_abort) { |
| 5116 | stop(msg); |
| 5117 | return; |
| 5118 | } |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5119 | #endif |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5120 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5121 | li(a0, Operand(Smi::FromInt(reason))); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 5122 | push(a0); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5123 | // Disable stub call restrictions to always allow calls to abort. |
| 5124 | if (!has_frame_) { |
| 5125 | // We don't actually want to generate a pile of code for this, so just |
| 5126 | // claim there is a stack frame, without generating one. |
| 5127 | FrameScope scope(this, StackFrame::NONE); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 5128 | CallRuntime(Runtime::kAbort); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5129 | } else { |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 5130 | CallRuntime(Runtime::kAbort); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5131 | } |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 5132 | // Will not return here. |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5133 | if (is_trampoline_pool_blocked()) { |
| 5134 | // If the calling code cares about the exact number of |
| 5135 | // instructions generated, we insert padding here to keep the size |
| 5136 | // of the Abort macro constant. |
| 5137 | // Currently in debug mode with debug_code enabled the number of |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5138 | // generated instructions is 10, so we use this as a maximum value. |
| 5139 | static const int kExpectedAbortInstructions = 10; |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5140 | int abort_instructions = InstructionsGeneratedSince(&abort_start); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5141 | DCHECK(abort_instructions <= kExpectedAbortInstructions); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5142 | while (abort_instructions++ < kExpectedAbortInstructions) { |
| 5143 | nop(); |
| 5144 | } |
| 5145 | } |
| 5146 | } |
| 5147 | |
| 5148 | |
| 5149 | void MacroAssembler::LoadContext(Register dst, int context_chain_length) { |
| 5150 | if (context_chain_length > 0) { |
| 5151 | // Move up the chain of contexts to the context containing the slot. |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 5152 | lw(dst, MemOperand(cp, Context::SlotOffset(Context::PREVIOUS_INDEX))); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5153 | for (int i = 1; i < context_chain_length; i++) { |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 5154 | lw(dst, MemOperand(dst, Context::SlotOffset(Context::PREVIOUS_INDEX))); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5155 | } |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 5156 | } else { |
| 5157 | // Slot is in the current function context. Move it into the |
| 5158 | // destination register in case we store into it (the write barrier |
| 5159 | // cannot be allowed to destroy the context in esi). |
| 5160 | Move(dst, cp); |
| 5161 | } |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5162 | } |
| 5163 | |
| 5164 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5165 | void MacroAssembler::LoadTransitionedArrayMapConditional( |
| 5166 | ElementsKind expected_kind, |
| 5167 | ElementsKind transitioned_kind, |
| 5168 | Register map_in_out, |
| 5169 | Register scratch, |
| 5170 | Label* no_map_match) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 5171 | DCHECK(IsFastElementsKind(expected_kind)); |
| 5172 | DCHECK(IsFastElementsKind(transitioned_kind)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5173 | |
| 5174 | // 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] | 5175 | lw(scratch, NativeContextMemOperand()); |
| 5176 | lw(at, ContextMemOperand(scratch, Context::ArrayMapIndex(expected_kind))); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5177 | Branch(no_map_match, ne, map_in_out, Operand(at)); |
| 5178 | |
| 5179 | // Use the transitioned cached map. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 5180 | lw(map_in_out, |
| 5181 | ContextMemOperand(scratch, Context::ArrayMapIndex(transitioned_kind))); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5182 | } |
| 5183 | |
| 5184 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 5185 | void MacroAssembler::LoadNativeContextSlot(int index, Register dst) { |
| 5186 | lw(dst, NativeContextMemOperand()); |
| 5187 | lw(dst, ContextMemOperand(dst, index)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5188 | } |
| 5189 | |
| 5190 | |
| 5191 | void MacroAssembler::LoadGlobalFunctionInitialMap(Register function, |
| 5192 | Register map, |
| 5193 | Register scratch) { |
| 5194 | // Load the initial map. The global functions all have initial maps. |
| 5195 | lw(map, FieldMemOperand(function, JSFunction::kPrototypeOrInitialMapOffset)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 5196 | if (emit_debug_code()) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5197 | Label ok, fail; |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 5198 | CheckMap(map, scratch, Heap::kMetaMapRootIndex, &fail, DO_SMI_CHECK); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5199 | Branch(&ok); |
| 5200 | bind(&fail); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5201 | Abort(kGlobalFunctionsMustHaveInitialMap); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5202 | bind(&ok); |
| 5203 | } |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 5204 | } |
| 5205 | |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame^] | 5206 | void MacroAssembler::StubPrologue(StackFrame::Type type) { |
| 5207 | li(at, Operand(Smi::FromInt(type))); |
| 5208 | PushCommonFrame(at); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5209 | } |
| 5210 | |
| 5211 | |
| 5212 | void MacroAssembler::Prologue(bool code_pre_aging) { |
| 5213 | PredictableCodeSizeScope predictible_code_size_scope( |
| 5214 | this, kNoCodeAgeSequenceLength); |
| 5215 | // The following three instructions must remain together and unmodified |
| 5216 | // for code aging to work properly. |
| 5217 | if (code_pre_aging) { |
| 5218 | // Pre-age the code. |
| 5219 | Code* stub = Code::GetPreAgedCodeAgeStub(isolate()); |
| 5220 | nop(Assembler::CODE_AGE_MARKER_NOP); |
| 5221 | // Load the stub address to t9 and call it, |
| 5222 | // GetCodeAgeAndParity() extracts the stub address from this instruction. |
| 5223 | li(t9, |
| 5224 | Operand(reinterpret_cast<uint32_t>(stub->instruction_start())), |
| 5225 | CONSTANT_SIZE); |
| 5226 | nop(); // Prevent jalr to jal optimization. |
| 5227 | jalr(t9, a0); |
| 5228 | nop(); // Branch delay slot nop. |
| 5229 | nop(); // Pad the empty space. |
| 5230 | } else { |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame^] | 5231 | PushStandardFrame(a1); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5232 | nop(Assembler::CODE_AGE_SEQUENCE_NOP); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5233 | } |
| 5234 | } |
| 5235 | |
| 5236 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 5237 | void MacroAssembler::EmitLoadTypeFeedbackVector(Register vector) { |
| 5238 | lw(vector, MemOperand(fp, JavaScriptFrameConstants::kFunctionOffset)); |
| 5239 | lw(vector, FieldMemOperand(vector, JSFunction::kSharedFunctionInfoOffset)); |
| 5240 | lw(vector, |
| 5241 | FieldMemOperand(vector, SharedFunctionInfo::kFeedbackVectorOffset)); |
| 5242 | } |
| 5243 | |
| 5244 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 5245 | void MacroAssembler::EnterFrame(StackFrame::Type type, |
| 5246 | bool load_constant_pool_pointer_reg) { |
| 5247 | // Out-of-line constant pool not implemented on mips. |
| 5248 | UNREACHABLE(); |
| 5249 | } |
| 5250 | |
| 5251 | |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 5252 | void MacroAssembler::EnterFrame(StackFrame::Type type) { |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame^] | 5253 | int stack_offset, fp_offset; |
| 5254 | if (type == StackFrame::INTERNAL) { |
| 5255 | stack_offset = -4 * kPointerSize; |
| 5256 | fp_offset = 2 * kPointerSize; |
| 5257 | } else { |
| 5258 | stack_offset = -3 * kPointerSize; |
| 5259 | fp_offset = 1 * kPointerSize; |
| 5260 | } |
| 5261 | addiu(sp, sp, stack_offset); |
| 5262 | stack_offset = -stack_offset - kPointerSize; |
| 5263 | sw(ra, MemOperand(sp, stack_offset)); |
| 5264 | stack_offset -= kPointerSize; |
| 5265 | sw(fp, MemOperand(sp, stack_offset)); |
| 5266 | stack_offset -= kPointerSize; |
| 5267 | li(t9, Operand(Smi::FromInt(type))); |
| 5268 | sw(t9, MemOperand(sp, stack_offset)); |
| 5269 | if (type == StackFrame::INTERNAL) { |
| 5270 | DCHECK_EQ(stack_offset, kPointerSize); |
| 5271 | li(t9, Operand(CodeObject())); |
| 5272 | sw(t9, MemOperand(sp, 0)); |
| 5273 | } else { |
| 5274 | DCHECK_EQ(stack_offset, 0); |
| 5275 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5276 | // Adjust FP to point to saved FP. |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame^] | 5277 | Addu(fp, sp, Operand(fp_offset)); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 5278 | } |
| 5279 | |
| 5280 | |
| 5281 | void MacroAssembler::LeaveFrame(StackFrame::Type type) { |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame^] | 5282 | addiu(sp, fp, 2 * kPointerSize); |
| 5283 | lw(ra, MemOperand(fp, 1 * kPointerSize)); |
| 5284 | lw(fp, MemOperand(fp, 0 * kPointerSize)); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 5285 | } |
| 5286 | |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame^] | 5287 | void MacroAssembler::EnterExitFrame(bool save_doubles, int stack_space) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5288 | // Set up the frame structure on the stack. |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 5289 | STATIC_ASSERT(2 * kPointerSize == ExitFrameConstants::kCallerSPDisplacement); |
| 5290 | STATIC_ASSERT(1 * kPointerSize == ExitFrameConstants::kCallerPCOffset); |
| 5291 | STATIC_ASSERT(0 * kPointerSize == ExitFrameConstants::kCallerFPOffset); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 5292 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 5293 | // This is how the stack will look: |
| 5294 | // fp + 2 (==kCallerSPDisplacement) - old stack's end |
| 5295 | // [fp + 1 (==kCallerPCOffset)] - saved old ra |
| 5296 | // [fp + 0 (==kCallerFPOffset)] - saved old fp |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame^] | 5297 | // [fp - 1 StackFrame::EXIT Smi |
| 5298 | // [fp - 2 (==kSPOffset)] - sp of the called function |
| 5299 | // [fp - 3 (==kCodeOffset)] - CodeObject |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 5300 | // fp - (2 + stack_space + alignment) == sp == [fp - kSPOffset] - top of the |
| 5301 | // new stack (will contain saved ra) |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 5302 | |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame^] | 5303 | // Save registers and reserve room for saved entry sp and code object. |
| 5304 | addiu(sp, sp, -2 * kPointerSize - ExitFrameConstants::kFixedFrameSizeFromFp); |
| 5305 | sw(ra, MemOperand(sp, 4 * kPointerSize)); |
| 5306 | sw(fp, MemOperand(sp, 3 * kPointerSize)); |
| 5307 | li(at, Operand(Smi::FromInt(StackFrame::EXIT))); |
| 5308 | sw(at, MemOperand(sp, 2 * kPointerSize)); |
| 5309 | // Set up new frame pointer. |
| 5310 | addiu(fp, sp, ExitFrameConstants::kFixedFrameSizeFromFp); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 5311 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 5312 | if (emit_debug_code()) { |
| 5313 | sw(zero_reg, MemOperand(fp, ExitFrameConstants::kSPOffset)); |
| 5314 | } |
| 5315 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5316 | // Accessed from ExitFrame::code_slot. |
| 5317 | li(t8, Operand(CodeObject()), CONSTANT_SIZE); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 5318 | sw(t8, MemOperand(fp, ExitFrameConstants::kCodeOffset)); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 5319 | |
| 5320 | // Save the frame pointer and the context in top. |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 5321 | li(t8, Operand(ExternalReference(Isolate::kCEntryFPAddress, isolate()))); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5322 | sw(fp, MemOperand(t8)); |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 5323 | li(t8, Operand(ExternalReference(Isolate::kContextAddress, isolate()))); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5324 | sw(cp, MemOperand(t8)); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 5325 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 5326 | const int frame_alignment = MacroAssembler::ActivationFrameAlignment(); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5327 | if (save_doubles) { |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 5328 | // 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] | 5329 | DCHECK(kDoubleSize == frame_alignment); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 5330 | if (frame_alignment > 0) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5331 | DCHECK(base::bits::IsPowerOfTwo32(frame_alignment)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 5332 | And(sp, sp, Operand(-frame_alignment)); // Align stack. |
| 5333 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5334 | int space = FPURegister::kMaxNumRegisters * kDoubleSize; |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5335 | Subu(sp, sp, Operand(space)); |
| 5336 | // Remember: we only need to save every 2nd double FPU value. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5337 | for (int i = 0; i < FPURegister::kMaxNumRegisters; i+=2) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5338 | FPURegister reg = FPURegister::from_code(i); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 5339 | sdc1(reg, MemOperand(sp, i * kDoubleSize)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5340 | } |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5341 | } |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 5342 | |
| 5343 | // Reserve place for the return address, stack space and an optional slot |
| 5344 | // (used by the DirectCEntryStub to hold the return value if a struct is |
| 5345 | // returned) and align the frame preparing for calling the runtime function. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5346 | DCHECK(stack_space >= 0); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 5347 | Subu(sp, sp, Operand((stack_space + 2) * kPointerSize)); |
| 5348 | if (frame_alignment > 0) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5349 | DCHECK(base::bits::IsPowerOfTwo32(frame_alignment)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 5350 | And(sp, sp, Operand(-frame_alignment)); // Align stack. |
| 5351 | } |
| 5352 | |
| 5353 | // Set the exit frame sp value to point just before the return address |
| 5354 | // location. |
| 5355 | addiu(at, sp, kPointerSize); |
| 5356 | sw(at, MemOperand(fp, ExitFrameConstants::kSPOffset)); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 5357 | } |
| 5358 | |
| 5359 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 5360 | void MacroAssembler::LeaveExitFrame(bool save_doubles, Register argument_count, |
| 5361 | bool restore_context, bool do_return, |
| 5362 | bool argument_count_is_length) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5363 | // Optionally restore all double registers. |
| 5364 | if (save_doubles) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5365 | // Remember: we only need to restore every 2nd double FPU value. |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 5366 | lw(t8, MemOperand(fp, ExitFrameConstants::kSPOffset)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5367 | for (int i = 0; i < FPURegister::kMaxNumRegisters; i+=2) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5368 | FPURegister reg = FPURegister::from_code(i); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 5369 | ldc1(reg, MemOperand(t8, i * kDoubleSize + kPointerSize)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5370 | } |
| 5371 | } |
| 5372 | |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 5373 | // Clear top frame. |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 5374 | li(t8, Operand(ExternalReference(Isolate::kCEntryFPAddress, isolate()))); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5375 | sw(zero_reg, MemOperand(t8)); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 5376 | |
| 5377 | // Restore current context from top and clear it in debug mode. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5378 | if (restore_context) { |
| 5379 | li(t8, Operand(ExternalReference(Isolate::kContextAddress, isolate()))); |
| 5380 | lw(cp, MemOperand(t8)); |
| 5381 | } |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 5382 | #ifdef DEBUG |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5383 | li(t8, Operand(ExternalReference(Isolate::kContextAddress, isolate()))); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5384 | sw(a3, MemOperand(t8)); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 5385 | #endif |
| 5386 | |
| 5387 | // Pop the arguments, restore registers, and return. |
| 5388 | mov(sp, fp); // Respect ABI stack constraint. |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 5389 | lw(fp, MemOperand(sp, ExitFrameConstants::kCallerFPOffset)); |
| 5390 | lw(ra, MemOperand(sp, ExitFrameConstants::kCallerPCOffset)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5391 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 5392 | if (argument_count.is_valid()) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 5393 | if (argument_count_is_length) { |
| 5394 | addu(sp, sp, argument_count); |
| 5395 | } else { |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 5396 | Lsa(sp, sp, argument_count, kPointerSizeLog2, t8); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 5397 | } |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 5398 | } |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5399 | |
| 5400 | if (do_return) { |
| 5401 | Ret(USE_DELAY_SLOT); |
| 5402 | // If returning, the instruction in the delay slot will be the addiu below. |
| 5403 | } |
| 5404 | addiu(sp, sp, 8); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 5405 | } |
| 5406 | |
| 5407 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5408 | void MacroAssembler::InitializeNewString(Register string, |
| 5409 | Register length, |
| 5410 | Heap::RootListIndex map_index, |
| 5411 | Register scratch1, |
| 5412 | Register scratch2) { |
| 5413 | sll(scratch1, length, kSmiTagSize); |
| 5414 | LoadRoot(scratch2, map_index); |
| 5415 | sw(scratch1, FieldMemOperand(string, String::kLengthOffset)); |
| 5416 | li(scratch1, Operand(String::kEmptyHashField)); |
| 5417 | sw(scratch2, FieldMemOperand(string, HeapObject::kMapOffset)); |
| 5418 | sw(scratch1, FieldMemOperand(string, String::kHashFieldOffset)); |
| 5419 | } |
| 5420 | |
| 5421 | |
| 5422 | int MacroAssembler::ActivationFrameAlignment() { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5423 | #if V8_HOST_ARCH_MIPS |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5424 | // Running on the real platform. Use the alignment as mandated by the local |
| 5425 | // environment. |
| 5426 | // Note: This will break if we ever start generating snapshots on one Mips |
| 5427 | // platform for another Mips platform with a different alignment. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5428 | return base::OS::ActivationFrameAlignment(); |
| 5429 | #else // V8_HOST_ARCH_MIPS |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5430 | // If we are using the simulator then we should always align to the expected |
| 5431 | // alignment. As the simulator is used to generate snapshots we do not know |
| 5432 | // if the target platform will need alignment, so this is controlled from a |
| 5433 | // flag. |
| 5434 | return FLAG_sim_stack_alignment; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5435 | #endif // V8_HOST_ARCH_MIPS |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5436 | } |
| 5437 | |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 5438 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 5439 | void MacroAssembler::AssertStackIsAligned() { |
| 5440 | if (emit_debug_code()) { |
| 5441 | const int frame_alignment = ActivationFrameAlignment(); |
| 5442 | const int frame_alignment_mask = frame_alignment - 1; |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5443 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 5444 | if (frame_alignment > kPointerSize) { |
| 5445 | Label alignment_as_expected; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5446 | DCHECK(base::bits::IsPowerOfTwo32(frame_alignment)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 5447 | andi(at, sp, frame_alignment_mask); |
| 5448 | Branch(&alignment_as_expected, eq, at, Operand(zero_reg)); |
| 5449 | // Don't use Check here, as it will call Runtime_Abort re-entering here. |
| 5450 | stop("Unexpected stack alignment"); |
| 5451 | bind(&alignment_as_expected); |
| 5452 | } |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 5453 | } |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 5454 | } |
| 5455 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5456 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5457 | void MacroAssembler::JumpIfNotPowerOfTwoOrZero( |
| 5458 | Register reg, |
| 5459 | Register scratch, |
| 5460 | Label* not_power_of_two_or_zero) { |
| 5461 | Subu(scratch, reg, Operand(1)); |
| 5462 | Branch(USE_DELAY_SLOT, not_power_of_two_or_zero, lt, |
| 5463 | scratch, Operand(zero_reg)); |
| 5464 | and_(at, scratch, reg); // In the delay slot. |
| 5465 | Branch(not_power_of_two_or_zero, ne, at, Operand(zero_reg)); |
| 5466 | } |
| 5467 | |
| 5468 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5469 | void MacroAssembler::SmiTagCheckOverflow(Register reg, Register overflow) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5470 | DCHECK(!reg.is(overflow)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5471 | mov(overflow, reg); // Save original value. |
| 5472 | SmiTag(reg); |
| 5473 | xor_(overflow, overflow, reg); // Overflow if (value ^ 2 * value) < 0. |
| 5474 | } |
| 5475 | |
| 5476 | |
| 5477 | void MacroAssembler::SmiTagCheckOverflow(Register dst, |
| 5478 | Register src, |
| 5479 | Register overflow) { |
| 5480 | if (dst.is(src)) { |
| 5481 | // Fall back to slower case. |
| 5482 | SmiTagCheckOverflow(dst, overflow); |
| 5483 | } else { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5484 | DCHECK(!dst.is(src)); |
| 5485 | DCHECK(!dst.is(overflow)); |
| 5486 | DCHECK(!src.is(overflow)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5487 | SmiTag(dst, src); |
| 5488 | xor_(overflow, dst, src); // Overflow if (value ^ 2 * value) < 0. |
| 5489 | } |
| 5490 | } |
| 5491 | |
| 5492 | |
| 5493 | void MacroAssembler::UntagAndJumpIfSmi(Register dst, |
| 5494 | Register src, |
| 5495 | Label* smi_case) { |
| 5496 | JumpIfSmi(src, smi_case, at, USE_DELAY_SLOT); |
| 5497 | SmiUntag(dst, src); |
| 5498 | } |
| 5499 | |
| 5500 | |
| 5501 | void MacroAssembler::UntagAndJumpIfNotSmi(Register dst, |
| 5502 | Register src, |
| 5503 | Label* non_smi_case) { |
| 5504 | JumpIfNotSmi(src, non_smi_case, at, USE_DELAY_SLOT); |
| 5505 | SmiUntag(dst, src); |
| 5506 | } |
| 5507 | |
| 5508 | void MacroAssembler::JumpIfSmi(Register value, |
| 5509 | Label* smi_label, |
| 5510 | Register scratch, |
| 5511 | BranchDelaySlot bd) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5512 | DCHECK_EQ(0, kSmiTag); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5513 | andi(scratch, value, kSmiTagMask); |
| 5514 | Branch(bd, smi_label, eq, scratch, Operand(zero_reg)); |
| 5515 | } |
| 5516 | |
| 5517 | void MacroAssembler::JumpIfNotSmi(Register value, |
| 5518 | Label* not_smi_label, |
| 5519 | Register scratch, |
| 5520 | BranchDelaySlot bd) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5521 | DCHECK_EQ(0, kSmiTag); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5522 | andi(scratch, value, kSmiTagMask); |
| 5523 | Branch(bd, not_smi_label, ne, scratch, Operand(zero_reg)); |
| 5524 | } |
| 5525 | |
| 5526 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5527 | void MacroAssembler::JumpIfNotBothSmi(Register reg1, |
| 5528 | Register reg2, |
| 5529 | Label* on_not_both_smi) { |
| 5530 | STATIC_ASSERT(kSmiTag == 0); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5531 | DCHECK_EQ(1, kSmiTagMask); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5532 | or_(at, reg1, reg2); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5533 | JumpIfNotSmi(at, on_not_both_smi); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5534 | } |
| 5535 | |
| 5536 | |
| 5537 | void MacroAssembler::JumpIfEitherSmi(Register reg1, |
| 5538 | Register reg2, |
| 5539 | Label* on_either_smi) { |
| 5540 | STATIC_ASSERT(kSmiTag == 0); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5541 | DCHECK_EQ(1, kSmiTagMask); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5542 | // Both Smi tags must be 1 (not Smi). |
| 5543 | and_(at, reg1, reg2); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5544 | JumpIfSmi(at, on_either_smi); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5545 | } |
| 5546 | |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame^] | 5547 | void MacroAssembler::AssertNotNumber(Register object) { |
| 5548 | if (emit_debug_code()) { |
| 5549 | STATIC_ASSERT(kSmiTag == 0); |
| 5550 | andi(at, object, kSmiTagMask); |
| 5551 | Check(ne, kOperandIsANumber, at, Operand(zero_reg)); |
| 5552 | GetObjectType(object, t8, t8); |
| 5553 | Check(ne, kOperandIsNotANumber, t8, Operand(HEAP_NUMBER_TYPE)); |
| 5554 | } |
| 5555 | } |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5556 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5557 | void MacroAssembler::AssertNotSmi(Register object) { |
| 5558 | if (emit_debug_code()) { |
| 5559 | STATIC_ASSERT(kSmiTag == 0); |
| 5560 | andi(at, object, kSmiTagMask); |
| 5561 | Check(ne, kOperandIsASmi, at, Operand(zero_reg)); |
| 5562 | } |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5563 | } |
| 5564 | |
| 5565 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5566 | void MacroAssembler::AssertSmi(Register object) { |
| 5567 | if (emit_debug_code()) { |
| 5568 | STATIC_ASSERT(kSmiTag == 0); |
| 5569 | andi(at, object, kSmiTagMask); |
| 5570 | Check(eq, kOperandIsASmi, at, Operand(zero_reg)); |
| 5571 | } |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5572 | } |
| 5573 | |
| 5574 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5575 | void MacroAssembler::AssertString(Register object) { |
| 5576 | if (emit_debug_code()) { |
| 5577 | STATIC_ASSERT(kSmiTag == 0); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 5578 | SmiTst(object, t8); |
| 5579 | Check(ne, kOperandIsASmiAndNotAString, t8, Operand(zero_reg)); |
| 5580 | GetObjectType(object, t8, t8); |
| 5581 | Check(lo, kOperandIsNotAString, t8, Operand(FIRST_NONSTRING_TYPE)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5582 | } |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 5583 | } |
| 5584 | |
| 5585 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5586 | void MacroAssembler::AssertName(Register object) { |
| 5587 | if (emit_debug_code()) { |
| 5588 | STATIC_ASSERT(kSmiTag == 0); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 5589 | SmiTst(object, t8); |
| 5590 | Check(ne, kOperandIsASmiAndNotAName, t8, Operand(zero_reg)); |
| 5591 | GetObjectType(object, t8, t8); |
| 5592 | Check(le, kOperandIsNotAName, t8, Operand(LAST_NAME_TYPE)); |
| 5593 | } |
| 5594 | } |
| 5595 | |
| 5596 | |
| 5597 | void MacroAssembler::AssertFunction(Register object) { |
| 5598 | if (emit_debug_code()) { |
| 5599 | STATIC_ASSERT(kSmiTag == 0); |
| 5600 | SmiTst(object, t8); |
| 5601 | Check(ne, kOperandIsASmiAndNotAFunction, t8, Operand(zero_reg)); |
| 5602 | GetObjectType(object, t8, t8); |
| 5603 | Check(eq, kOperandIsNotAFunction, t8, Operand(JS_FUNCTION_TYPE)); |
| 5604 | } |
| 5605 | } |
| 5606 | |
| 5607 | |
| 5608 | void MacroAssembler::AssertBoundFunction(Register object) { |
| 5609 | if (emit_debug_code()) { |
| 5610 | STATIC_ASSERT(kSmiTag == 0); |
| 5611 | SmiTst(object, t8); |
| 5612 | Check(ne, kOperandIsASmiAndNotABoundFunction, t8, Operand(zero_reg)); |
| 5613 | GetObjectType(object, t8, t8); |
| 5614 | Check(eq, kOperandIsNotABoundFunction, t8, Operand(JS_BOUND_FUNCTION_TYPE)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5615 | } |
| 5616 | } |
| 5617 | |
| 5618 | |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 5619 | void MacroAssembler::AssertReceiver(Register object) { |
| 5620 | if (emit_debug_code()) { |
| 5621 | STATIC_ASSERT(kSmiTag == 0); |
| 5622 | SmiTst(object, t8); |
| 5623 | Check(ne, kOperandIsASmiAndNotAReceiver, t8, Operand(zero_reg)); |
| 5624 | GetObjectType(object, t8, t8); |
| 5625 | Check(ge, kOperandIsNotAReceiver, t8, Operand(FIRST_JS_RECEIVER_TYPE)); |
| 5626 | } |
| 5627 | } |
| 5628 | |
| 5629 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5630 | void MacroAssembler::AssertUndefinedOrAllocationSite(Register object, |
| 5631 | Register scratch) { |
| 5632 | if (emit_debug_code()) { |
| 5633 | Label done_checking; |
| 5634 | AssertNotSmi(object); |
| 5635 | LoadRoot(scratch, Heap::kUndefinedValueRootIndex); |
| 5636 | Branch(&done_checking, eq, object, Operand(scratch)); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 5637 | lw(t8, FieldMemOperand(object, HeapObject::kMapOffset)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5638 | LoadRoot(scratch, Heap::kAllocationSiteMapRootIndex); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 5639 | Assert(eq, kExpectedUndefinedOrCell, t8, Operand(scratch)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5640 | bind(&done_checking); |
| 5641 | } |
| 5642 | } |
| 5643 | |
| 5644 | |
| 5645 | void MacroAssembler::AssertIsRoot(Register reg, Heap::RootListIndex index) { |
| 5646 | if (emit_debug_code()) { |
| 5647 | DCHECK(!reg.is(at)); |
| 5648 | LoadRoot(at, index); |
| 5649 | Check(eq, kHeapNumberMapRegisterClobbered, reg, Operand(at)); |
| 5650 | } |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5651 | } |
| 5652 | |
| 5653 | |
| 5654 | void MacroAssembler::JumpIfNotHeapNumber(Register object, |
| 5655 | Register heap_number_map, |
| 5656 | Register scratch, |
| 5657 | Label* on_not_heap_number) { |
| 5658 | lw(scratch, FieldMemOperand(object, HeapObject::kMapOffset)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5659 | AssertIsRoot(heap_number_map, Heap::kHeapNumberMapRootIndex); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5660 | Branch(on_not_heap_number, ne, scratch, Operand(heap_number_map)); |
| 5661 | } |
| 5662 | |
| 5663 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5664 | void MacroAssembler::JumpIfNonSmisNotBothSequentialOneByteStrings( |
| 5665 | Register first, Register second, Register scratch1, Register scratch2, |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5666 | Label* failure) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5667 | // Test that both first and second are sequential one-byte strings. |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5668 | // Assume that they are non-smis. |
| 5669 | lw(scratch1, FieldMemOperand(first, HeapObject::kMapOffset)); |
| 5670 | lw(scratch2, FieldMemOperand(second, HeapObject::kMapOffset)); |
| 5671 | lbu(scratch1, FieldMemOperand(scratch1, Map::kInstanceTypeOffset)); |
| 5672 | lbu(scratch2, FieldMemOperand(scratch2, Map::kInstanceTypeOffset)); |
| 5673 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5674 | JumpIfBothInstanceTypesAreNotSequentialOneByte(scratch1, scratch2, scratch1, |
| 5675 | scratch2, failure); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5676 | } |
| 5677 | |
| 5678 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5679 | void MacroAssembler::JumpIfNotBothSequentialOneByteStrings(Register first, |
| 5680 | Register second, |
| 5681 | Register scratch1, |
| 5682 | Register scratch2, |
| 5683 | Label* failure) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5684 | // Check that neither is a smi. |
| 5685 | STATIC_ASSERT(kSmiTag == 0); |
| 5686 | And(scratch1, first, Operand(second)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5687 | JumpIfSmi(scratch1, failure); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5688 | JumpIfNonSmisNotBothSequentialOneByteStrings(first, second, scratch1, |
| 5689 | scratch2, failure); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5690 | } |
| 5691 | |
| 5692 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5693 | void MacroAssembler::JumpIfBothInstanceTypesAreNotSequentialOneByte( |
| 5694 | Register first, Register second, Register scratch1, Register scratch2, |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5695 | Label* failure) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5696 | const int kFlatOneByteStringMask = |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5697 | kIsNotStringMask | kStringEncodingMask | kStringRepresentationMask; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5698 | const int kFlatOneByteStringTag = |
| 5699 | kStringTag | kOneByteStringTag | kSeqStringTag; |
| 5700 | DCHECK(kFlatOneByteStringTag <= 0xffff); // Ensure this fits 16-bit immed. |
| 5701 | andi(scratch1, first, kFlatOneByteStringMask); |
| 5702 | Branch(failure, ne, scratch1, Operand(kFlatOneByteStringTag)); |
| 5703 | andi(scratch2, second, kFlatOneByteStringMask); |
| 5704 | Branch(failure, ne, scratch2, Operand(kFlatOneByteStringTag)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5705 | } |
| 5706 | |
| 5707 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5708 | void MacroAssembler::JumpIfInstanceTypeIsNotSequentialOneByte(Register type, |
| 5709 | Register scratch, |
| 5710 | Label* failure) { |
| 5711 | const int kFlatOneByteStringMask = |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5712 | kIsNotStringMask | kStringEncodingMask | kStringRepresentationMask; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5713 | const int kFlatOneByteStringTag = |
| 5714 | kStringTag | kOneByteStringTag | kSeqStringTag; |
| 5715 | And(scratch, type, Operand(kFlatOneByteStringMask)); |
| 5716 | Branch(failure, ne, scratch, Operand(kFlatOneByteStringTag)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5717 | } |
| 5718 | |
| 5719 | |
| 5720 | static const int kRegisterPassedArguments = 4; |
| 5721 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5722 | int MacroAssembler::CalculateStackPassedWords(int num_reg_arguments, |
| 5723 | int num_double_arguments) { |
| 5724 | int stack_passed_words = 0; |
| 5725 | num_reg_arguments += 2 * num_double_arguments; |
| 5726 | |
| 5727 | // Up to four simple arguments are passed in registers a0..a3. |
| 5728 | if (num_reg_arguments > kRegisterPassedArguments) { |
| 5729 | stack_passed_words += num_reg_arguments - kRegisterPassedArguments; |
| 5730 | } |
| 5731 | stack_passed_words += kCArgSlotCount; |
| 5732 | return stack_passed_words; |
| 5733 | } |
| 5734 | |
| 5735 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5736 | void MacroAssembler::EmitSeqStringSetCharCheck(Register string, |
| 5737 | Register index, |
| 5738 | Register value, |
| 5739 | Register scratch, |
| 5740 | uint32_t encoding_mask) { |
| 5741 | Label is_object; |
| 5742 | SmiTst(string, at); |
| 5743 | Check(ne, kNonObject, at, Operand(zero_reg)); |
| 5744 | |
| 5745 | lw(at, FieldMemOperand(string, HeapObject::kMapOffset)); |
| 5746 | lbu(at, FieldMemOperand(at, Map::kInstanceTypeOffset)); |
| 5747 | |
| 5748 | andi(at, at, kStringRepresentationMask | kStringEncodingMask); |
| 5749 | li(scratch, Operand(encoding_mask)); |
| 5750 | Check(eq, kUnexpectedStringType, at, Operand(scratch)); |
| 5751 | |
| 5752 | // The index is assumed to be untagged coming in, tag it to compare with the |
| 5753 | // string length without using a temp register, it is restored at the end of |
| 5754 | // this function. |
| 5755 | Label index_tag_ok, index_tag_bad; |
| 5756 | TrySmiTag(index, scratch, &index_tag_bad); |
| 5757 | Branch(&index_tag_ok); |
| 5758 | bind(&index_tag_bad); |
| 5759 | Abort(kIndexIsTooLarge); |
| 5760 | bind(&index_tag_ok); |
| 5761 | |
| 5762 | lw(at, FieldMemOperand(string, String::kLengthOffset)); |
| 5763 | Check(lt, kIndexIsTooLarge, index, Operand(at)); |
| 5764 | |
| 5765 | DCHECK(Smi::FromInt(0) == 0); |
| 5766 | Check(ge, kIndexIsNegative, index, Operand(zero_reg)); |
| 5767 | |
| 5768 | SmiUntag(index, index); |
| 5769 | } |
| 5770 | |
| 5771 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5772 | void MacroAssembler::PrepareCallCFunction(int num_reg_arguments, |
| 5773 | int num_double_arguments, |
| 5774 | Register scratch) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5775 | int frame_alignment = ActivationFrameAlignment(); |
| 5776 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5777 | // Up to four simple arguments are passed in registers a0..a3. |
| 5778 | // Those four arguments must have reserved argument slots on the stack for |
| 5779 | // mips, even though those argument slots are not normally used. |
| 5780 | // Remaining arguments are pushed on the stack, above (higher address than) |
| 5781 | // the argument slots. |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5782 | int stack_passed_arguments = CalculateStackPassedWords( |
| 5783 | num_reg_arguments, num_double_arguments); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5784 | if (frame_alignment > kPointerSize) { |
| 5785 | // Make stack end at alignment and make room for num_arguments - 4 words |
| 5786 | // and the original value of sp. |
| 5787 | mov(scratch, sp); |
| 5788 | Subu(sp, sp, Operand((stack_passed_arguments + 1) * kPointerSize)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5789 | DCHECK(base::bits::IsPowerOfTwo32(frame_alignment)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5790 | And(sp, sp, Operand(-frame_alignment)); |
| 5791 | sw(scratch, MemOperand(sp, stack_passed_arguments * kPointerSize)); |
| 5792 | } else { |
| 5793 | Subu(sp, sp, Operand(stack_passed_arguments * kPointerSize)); |
| 5794 | } |
| 5795 | } |
| 5796 | |
| 5797 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5798 | void MacroAssembler::PrepareCallCFunction(int num_reg_arguments, |
| 5799 | Register scratch) { |
| 5800 | PrepareCallCFunction(num_reg_arguments, 0, scratch); |
| 5801 | } |
| 5802 | |
| 5803 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5804 | void MacroAssembler::CallCFunction(ExternalReference function, |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5805 | int num_reg_arguments, |
| 5806 | int num_double_arguments) { |
| 5807 | li(t8, Operand(function)); |
| 5808 | CallCFunctionHelper(t8, num_reg_arguments, num_double_arguments); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5809 | } |
| 5810 | |
| 5811 | |
| 5812 | void MacroAssembler::CallCFunction(Register function, |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5813 | int num_reg_arguments, |
| 5814 | int num_double_arguments) { |
| 5815 | CallCFunctionHelper(function, num_reg_arguments, num_double_arguments); |
| 5816 | } |
| 5817 | |
| 5818 | |
| 5819 | void MacroAssembler::CallCFunction(ExternalReference function, |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5820 | int num_arguments) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5821 | CallCFunction(function, num_arguments, 0); |
| 5822 | } |
| 5823 | |
| 5824 | |
| 5825 | void MacroAssembler::CallCFunction(Register function, |
| 5826 | int num_arguments) { |
| 5827 | CallCFunction(function, num_arguments, 0); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5828 | } |
| 5829 | |
| 5830 | |
| 5831 | void MacroAssembler::CallCFunctionHelper(Register function, |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5832 | int num_reg_arguments, |
| 5833 | int num_double_arguments) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5834 | DCHECK(has_frame()); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5835 | // Make sure that the stack is aligned before calling a C function unless |
| 5836 | // running in the simulator. The simulator has its own alignment check which |
| 5837 | // provides more information. |
| 5838 | // The argument stots are presumed to have been set up by |
| 5839 | // PrepareCallCFunction. The C function must be called via t9, for mips ABI. |
| 5840 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5841 | #if V8_HOST_ARCH_MIPS |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5842 | if (emit_debug_code()) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5843 | int frame_alignment = base::OS::ActivationFrameAlignment(); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5844 | int frame_alignment_mask = frame_alignment - 1; |
| 5845 | if (frame_alignment > kPointerSize) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5846 | DCHECK(base::bits::IsPowerOfTwo32(frame_alignment)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5847 | Label alignment_as_expected; |
| 5848 | And(at, sp, Operand(frame_alignment_mask)); |
| 5849 | Branch(&alignment_as_expected, eq, at, Operand(zero_reg)); |
| 5850 | // Don't use Check here, as it will call Runtime_Abort possibly |
| 5851 | // re-entering here. |
| 5852 | stop("Unexpected alignment in CallCFunction"); |
| 5853 | bind(&alignment_as_expected); |
| 5854 | } |
| 5855 | } |
| 5856 | #endif // V8_HOST_ARCH_MIPS |
| 5857 | |
| 5858 | // Just call directly. The function called cannot cause a GC, or |
| 5859 | // allow preemption, so the return address in the link register |
| 5860 | // stays correct. |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5861 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5862 | if (!function.is(t9)) { |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 5863 | mov(t9, function); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5864 | function = t9; |
| 5865 | } |
| 5866 | |
| 5867 | Call(function); |
| 5868 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5869 | int stack_passed_arguments = CalculateStackPassedWords( |
| 5870 | num_reg_arguments, num_double_arguments); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5871 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5872 | if (base::OS::ActivationFrameAlignment() > kPointerSize) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5873 | lw(sp, MemOperand(sp, stack_passed_arguments * kPointerSize)); |
| 5874 | } else { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 5875 | Addu(sp, sp, Operand(stack_passed_arguments * kPointerSize)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5876 | } |
| 5877 | } |
| 5878 | |
| 5879 | |
| 5880 | #undef BRANCH_ARGS_CHECK |
| 5881 | |
| 5882 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5883 | void MacroAssembler::CheckPageFlag( |
| 5884 | Register object, |
| 5885 | Register scratch, |
| 5886 | int mask, |
| 5887 | Condition cc, |
| 5888 | Label* condition_met) { |
| 5889 | And(scratch, object, Operand(~Page::kPageAlignmentMask)); |
| 5890 | lw(scratch, MemOperand(scratch, MemoryChunk::kFlagsOffset)); |
| 5891 | And(scratch, scratch, Operand(mask)); |
| 5892 | Branch(condition_met, cc, scratch, Operand(zero_reg)); |
| 5893 | } |
| 5894 | |
| 5895 | |
| 5896 | void MacroAssembler::JumpIfBlack(Register object, |
| 5897 | Register scratch0, |
| 5898 | Register scratch1, |
| 5899 | Label* on_black) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 5900 | HasColor(object, scratch0, scratch1, on_black, 1, 1); // kBlackBitPattern. |
| 5901 | DCHECK(strcmp(Marking::kBlackBitPattern, "11") == 0); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5902 | } |
| 5903 | |
| 5904 | |
| 5905 | void MacroAssembler::HasColor(Register object, |
| 5906 | Register bitmap_scratch, |
| 5907 | Register mask_scratch, |
| 5908 | Label* has_color, |
| 5909 | int first_bit, |
| 5910 | int second_bit) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5911 | DCHECK(!AreAliased(object, bitmap_scratch, mask_scratch, t8)); |
| 5912 | DCHECK(!AreAliased(object, bitmap_scratch, mask_scratch, t9)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5913 | |
| 5914 | GetMarkBits(object, bitmap_scratch, mask_scratch); |
| 5915 | |
| 5916 | Label other_color, word_boundary; |
| 5917 | lw(t9, MemOperand(bitmap_scratch, MemoryChunk::kHeaderSize)); |
| 5918 | And(t8, t9, Operand(mask_scratch)); |
| 5919 | Branch(&other_color, first_bit == 1 ? eq : ne, t8, Operand(zero_reg)); |
| 5920 | // Shift left 1 by adding. |
| 5921 | Addu(mask_scratch, mask_scratch, Operand(mask_scratch)); |
| 5922 | Branch(&word_boundary, eq, mask_scratch, Operand(zero_reg)); |
| 5923 | And(t8, t9, Operand(mask_scratch)); |
| 5924 | Branch(has_color, second_bit == 1 ? ne : eq, t8, Operand(zero_reg)); |
| 5925 | jmp(&other_color); |
| 5926 | |
| 5927 | bind(&word_boundary); |
| 5928 | lw(t9, MemOperand(bitmap_scratch, MemoryChunk::kHeaderSize + kPointerSize)); |
| 5929 | And(t9, t9, Operand(1)); |
| 5930 | Branch(has_color, second_bit == 1 ? ne : eq, t9, Operand(zero_reg)); |
| 5931 | bind(&other_color); |
| 5932 | } |
| 5933 | |
| 5934 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5935 | void MacroAssembler::GetMarkBits(Register addr_reg, |
| 5936 | Register bitmap_reg, |
| 5937 | Register mask_reg) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5938 | DCHECK(!AreAliased(addr_reg, bitmap_reg, mask_reg, no_reg)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5939 | And(bitmap_reg, addr_reg, Operand(~Page::kPageAlignmentMask)); |
| 5940 | Ext(mask_reg, addr_reg, kPointerSizeLog2, Bitmap::kBitsPerCellLog2); |
| 5941 | const int kLowBits = kPointerSizeLog2 + Bitmap::kBitsPerCellLog2; |
| 5942 | Ext(t8, addr_reg, kLowBits, kPageSizeBits - kLowBits); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 5943 | Lsa(bitmap_reg, bitmap_reg, t8, kPointerSizeLog2, t8); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5944 | li(t8, Operand(1)); |
| 5945 | sllv(mask_reg, t8, mask_reg); |
| 5946 | } |
| 5947 | |
| 5948 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 5949 | void MacroAssembler::JumpIfWhite(Register value, Register bitmap_scratch, |
| 5950 | Register mask_scratch, Register load_scratch, |
| 5951 | Label* value_is_white) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5952 | DCHECK(!AreAliased(value, bitmap_scratch, mask_scratch, t8)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5953 | GetMarkBits(value, bitmap_scratch, mask_scratch); |
| 5954 | |
| 5955 | // 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] | 5956 | DCHECK(strcmp(Marking::kWhiteBitPattern, "00") == 0); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 5957 | DCHECK(strcmp(Marking::kBlackBitPattern, "11") == 0); |
| 5958 | DCHECK(strcmp(Marking::kGreyBitPattern, "10") == 0); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5959 | DCHECK(strcmp(Marking::kImpossibleBitPattern, "01") == 0); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5960 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5961 | // Since both black and grey have a 1 in the first position and white does |
| 5962 | // not have a 1 there we only need to check one bit. |
| 5963 | lw(load_scratch, MemOperand(bitmap_scratch, MemoryChunk::kHeaderSize)); |
| 5964 | And(t8, mask_scratch, load_scratch); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 5965 | Branch(value_is_white, eq, t8, Operand(zero_reg)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5966 | } |
| 5967 | |
| 5968 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 5969 | void MacroAssembler::LoadInstanceDescriptors(Register map, |
| 5970 | Register descriptors) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5971 | lw(descriptors, FieldMemOperand(map, Map::kDescriptorsOffset)); |
| 5972 | } |
| 5973 | |
| 5974 | |
| 5975 | void MacroAssembler::NumberOfOwnDescriptors(Register dst, Register map) { |
| 5976 | lw(dst, FieldMemOperand(map, Map::kBitField3Offset)); |
| 5977 | DecodeField<Map::NumberOfOwnDescriptorsBits>(dst); |
| 5978 | } |
| 5979 | |
| 5980 | |
| 5981 | void MacroAssembler::EnumLength(Register dst, Register map) { |
| 5982 | STATIC_ASSERT(Map::EnumLengthBits::kShift == 0); |
| 5983 | lw(dst, FieldMemOperand(map, Map::kBitField3Offset)); |
| 5984 | And(dst, dst, Operand(Map::EnumLengthBits::kMask)); |
| 5985 | SmiTag(dst); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 5986 | } |
| 5987 | |
| 5988 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 5989 | void MacroAssembler::LoadAccessor(Register dst, Register holder, |
| 5990 | int accessor_index, |
| 5991 | AccessorComponent accessor) { |
| 5992 | lw(dst, FieldMemOperand(holder, HeapObject::kMapOffset)); |
| 5993 | LoadInstanceDescriptors(dst, dst); |
| 5994 | lw(dst, |
| 5995 | FieldMemOperand(dst, DescriptorArray::GetValueOffset(accessor_index))); |
| 5996 | int offset = accessor == ACCESSOR_GETTER ? AccessorPair::kGetterOffset |
| 5997 | : AccessorPair::kSetterOffset; |
| 5998 | lw(dst, FieldMemOperand(dst, offset)); |
| 5999 | } |
| 6000 | |
| 6001 | |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 6002 | void MacroAssembler::CheckEnumCache(Label* call_runtime) { |
| 6003 | Register null_value = t1; |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 6004 | Register empty_fixed_array_value = t2; |
| 6005 | LoadRoot(empty_fixed_array_value, Heap::kEmptyFixedArrayRootIndex); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 6006 | Label next, start; |
| 6007 | mov(a2, a0); |
| 6008 | |
| 6009 | // Check if the enum length field is properly initialized, indicating that |
| 6010 | // there is an enum cache. |
| 6011 | lw(a1, FieldMemOperand(a2, HeapObject::kMapOffset)); |
| 6012 | |
| 6013 | EnumLength(a3, a1); |
| 6014 | Branch( |
| 6015 | call_runtime, eq, a3, Operand(Smi::FromInt(kInvalidEnumCacheSentinel))); |
| 6016 | |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 6017 | LoadRoot(null_value, Heap::kNullValueRootIndex); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 6018 | jmp(&start); |
| 6019 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 6020 | bind(&next); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 6021 | lw(a1, FieldMemOperand(a2, HeapObject::kMapOffset)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 6022 | |
| 6023 | // For all objects but the receiver, check that the cache is empty. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 6024 | EnumLength(a3, a1); |
| 6025 | Branch(call_runtime, ne, a3, Operand(Smi::FromInt(0))); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 6026 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 6027 | bind(&start); |
| 6028 | |
| 6029 | // Check that there are no elements. Register a2 contains the current JS |
| 6030 | // object we've reached through the prototype chain. |
| 6031 | Label no_elements; |
| 6032 | lw(a2, FieldMemOperand(a2, JSObject::kElementsOffset)); |
| 6033 | Branch(&no_elements, eq, a2, Operand(empty_fixed_array_value)); |
| 6034 | |
| 6035 | // Second chance, the object may be using the empty slow element dictionary. |
| 6036 | LoadRoot(at, Heap::kEmptySlowElementDictionaryRootIndex); |
| 6037 | Branch(call_runtime, ne, a2, Operand(at)); |
| 6038 | |
| 6039 | bind(&no_elements); |
| 6040 | lw(a2, FieldMemOperand(a1, Map::kPrototypeOffset)); |
| 6041 | Branch(&next, ne, a2, Operand(null_value)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 6042 | } |
| 6043 | |
| 6044 | |
| 6045 | void MacroAssembler::ClampUint8(Register output_reg, Register input_reg) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 6046 | DCHECK(!output_reg.is(input_reg)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 6047 | Label done; |
| 6048 | li(output_reg, Operand(255)); |
| 6049 | // Normal branch: nop in delay slot. |
| 6050 | Branch(&done, gt, input_reg, Operand(output_reg)); |
| 6051 | // Use delay slot in this branch. |
| 6052 | Branch(USE_DELAY_SLOT, &done, lt, input_reg, Operand(zero_reg)); |
| 6053 | mov(output_reg, zero_reg); // In delay slot. |
| 6054 | mov(output_reg, input_reg); // Value is in range 0..255. |
| 6055 | bind(&done); |
| 6056 | } |
| 6057 | |
| 6058 | |
| 6059 | void MacroAssembler::ClampDoubleToUint8(Register result_reg, |
| 6060 | DoubleRegister input_reg, |
| 6061 | DoubleRegister temp_double_reg) { |
| 6062 | Label above_zero; |
| 6063 | Label done; |
| 6064 | Label in_bounds; |
| 6065 | |
| 6066 | Move(temp_double_reg, 0.0); |
| 6067 | BranchF(&above_zero, NULL, gt, input_reg, temp_double_reg); |
| 6068 | |
| 6069 | // Double value is less than zero, NaN or Inf, return 0. |
| 6070 | mov(result_reg, zero_reg); |
| 6071 | Branch(&done); |
| 6072 | |
| 6073 | // Double value is >= 255, return 255. |
| 6074 | bind(&above_zero); |
| 6075 | Move(temp_double_reg, 255.0); |
| 6076 | BranchF(&in_bounds, NULL, le, input_reg, temp_double_reg); |
| 6077 | li(result_reg, Operand(255)); |
| 6078 | Branch(&done); |
| 6079 | |
| 6080 | // In 0-255 range, round and truncate. |
| 6081 | bind(&in_bounds); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 6082 | cvt_w_d(temp_double_reg, input_reg); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 6083 | mfc1(result_reg, temp_double_reg); |
| 6084 | bind(&done); |
| 6085 | } |
| 6086 | |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame^] | 6087 | void MacroAssembler::TestJSArrayForAllocationMemento(Register receiver_reg, |
| 6088 | Register scratch_reg, |
| 6089 | Label* no_memento_found) { |
| 6090 | Label map_check; |
| 6091 | Label top_check; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 6092 | ExternalReference new_space_allocation_top = |
| 6093 | ExternalReference::new_space_allocation_top_address(isolate()); |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame^] | 6094 | const int kMementoMapOffset = JSArray::kSize - kHeapObjectTag; |
| 6095 | const int kMementoEndOffset = kMementoMapOffset + AllocationMemento::kSize; |
| 6096 | |
| 6097 | // Bail out if the object is not in new space. |
| 6098 | JumpIfNotInNewSpace(receiver_reg, scratch_reg, no_memento_found); |
| 6099 | // If the object is in new space, we need to check whether it is on the same |
| 6100 | // page as the current top. |
| 6101 | Addu(scratch_reg, receiver_reg, Operand(kMementoEndOffset)); |
| 6102 | Xor(scratch_reg, scratch_reg, Operand(new_space_allocation_top)); |
| 6103 | And(scratch_reg, scratch_reg, Operand(~Page::kPageAlignmentMask)); |
| 6104 | Branch(&top_check, eq, scratch_reg, Operand(zero_reg)); |
| 6105 | // The object is on a different page than allocation top. Bail out if the |
| 6106 | // object sits on the page boundary as no memento can follow and we cannot |
| 6107 | // touch the memory following it. |
| 6108 | Addu(scratch_reg, receiver_reg, Operand(kMementoEndOffset)); |
| 6109 | Xor(scratch_reg, scratch_reg, Operand(receiver_reg)); |
| 6110 | And(scratch_reg, scratch_reg, Operand(~Page::kPageAlignmentMask)); |
| 6111 | Branch(no_memento_found, ne, scratch_reg, Operand(zero_reg)); |
| 6112 | // Continue with the actual map check. |
| 6113 | jmp(&map_check); |
| 6114 | // If top is on the same page as the current object, we need to check whether |
| 6115 | // we are below top. |
| 6116 | bind(&top_check); |
| 6117 | Addu(scratch_reg, receiver_reg, Operand(kMementoEndOffset)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 6118 | li(at, Operand(new_space_allocation_top)); |
| 6119 | lw(at, MemOperand(at)); |
| 6120 | Branch(no_memento_found, gt, scratch_reg, Operand(at)); |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame^] | 6121 | // Memento map check. |
| 6122 | bind(&map_check); |
| 6123 | lw(scratch_reg, MemOperand(receiver_reg, kMementoMapOffset)); |
| 6124 | Branch(no_memento_found, ne, scratch_reg, |
| 6125 | Operand(isolate()->factory()->allocation_memento_map())); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 6126 | } |
| 6127 | |
| 6128 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 6129 | Register GetRegisterThatIsNotOneOf(Register reg1, |
| 6130 | Register reg2, |
| 6131 | Register reg3, |
| 6132 | Register reg4, |
| 6133 | Register reg5, |
| 6134 | Register reg6) { |
| 6135 | RegList regs = 0; |
| 6136 | if (reg1.is_valid()) regs |= reg1.bit(); |
| 6137 | if (reg2.is_valid()) regs |= reg2.bit(); |
| 6138 | if (reg3.is_valid()) regs |= reg3.bit(); |
| 6139 | if (reg4.is_valid()) regs |= reg4.bit(); |
| 6140 | if (reg5.is_valid()) regs |= reg5.bit(); |
| 6141 | if (reg6.is_valid()) regs |= reg6.bit(); |
| 6142 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 6143 | const RegisterConfiguration* config = |
| 6144 | RegisterConfiguration::ArchDefault(RegisterConfiguration::CRANKSHAFT); |
| 6145 | for (int i = 0; i < config->num_allocatable_general_registers(); ++i) { |
| 6146 | int code = config->GetAllocatableGeneralCode(i); |
| 6147 | Register candidate = Register::from_code(code); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 6148 | if (regs & candidate.bit()) continue; |
| 6149 | return candidate; |
| 6150 | } |
| 6151 | UNREACHABLE(); |
| 6152 | return no_reg; |
| 6153 | } |
| 6154 | |
| 6155 | |
| 6156 | void MacroAssembler::JumpIfDictionaryInPrototypeChain( |
| 6157 | Register object, |
| 6158 | Register scratch0, |
| 6159 | Register scratch1, |
| 6160 | Label* found) { |
| 6161 | DCHECK(!scratch1.is(scratch0)); |
| 6162 | Factory* factory = isolate()->factory(); |
| 6163 | Register current = scratch0; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 6164 | Label loop_again, end; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 6165 | |
| 6166 | // Scratch contained elements pointer. |
| 6167 | Move(current, object); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 6168 | lw(current, FieldMemOperand(current, HeapObject::kMapOffset)); |
| 6169 | lw(current, FieldMemOperand(current, Map::kPrototypeOffset)); |
| 6170 | Branch(&end, eq, current, Operand(factory->null_value())); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 6171 | |
| 6172 | // Loop based on the map going up the prototype chain. |
| 6173 | bind(&loop_again); |
| 6174 | lw(current, FieldMemOperand(current, HeapObject::kMapOffset)); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 6175 | lbu(scratch1, FieldMemOperand(current, Map::kInstanceTypeOffset)); |
| 6176 | STATIC_ASSERT(JS_VALUE_TYPE < JS_OBJECT_TYPE); |
| 6177 | STATIC_ASSERT(JS_PROXY_TYPE < JS_OBJECT_TYPE); |
| 6178 | Branch(found, lo, scratch1, Operand(JS_OBJECT_TYPE)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 6179 | lb(scratch1, FieldMemOperand(current, Map::kBitField2Offset)); |
| 6180 | DecodeField<Map::ElementsKindBits>(scratch1); |
| 6181 | Branch(found, eq, scratch1, Operand(DICTIONARY_ELEMENTS)); |
| 6182 | lw(current, FieldMemOperand(current, Map::kPrototypeOffset)); |
| 6183 | Branch(&loop_again, ne, current, Operand(factory->null_value())); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 6184 | |
| 6185 | bind(&end); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 6186 | } |
| 6187 | |
| 6188 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 6189 | bool AreAliased(Register reg1, Register reg2, Register reg3, Register reg4, |
| 6190 | Register reg5, Register reg6, Register reg7, Register reg8, |
| 6191 | Register reg9, Register reg10) { |
| 6192 | int n_of_valid_regs = reg1.is_valid() + reg2.is_valid() + reg3.is_valid() + |
| 6193 | reg4.is_valid() + reg5.is_valid() + reg6.is_valid() + |
| 6194 | reg7.is_valid() + reg8.is_valid() + reg9.is_valid() + |
| 6195 | reg10.is_valid(); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 6196 | |
| 6197 | RegList regs = 0; |
| 6198 | if (reg1.is_valid()) regs |= reg1.bit(); |
| 6199 | if (reg2.is_valid()) regs |= reg2.bit(); |
| 6200 | if (reg3.is_valid()) regs |= reg3.bit(); |
| 6201 | if (reg4.is_valid()) regs |= reg4.bit(); |
| 6202 | if (reg5.is_valid()) regs |= reg5.bit(); |
| 6203 | if (reg6.is_valid()) regs |= reg6.bit(); |
| 6204 | if (reg7.is_valid()) regs |= reg7.bit(); |
| 6205 | if (reg8.is_valid()) regs |= reg8.bit(); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 6206 | if (reg9.is_valid()) regs |= reg9.bit(); |
| 6207 | if (reg10.is_valid()) regs |= reg10.bit(); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 6208 | int n_of_non_aliasing_regs = NumRegs(regs); |
| 6209 | |
| 6210 | return n_of_valid_regs != n_of_non_aliasing_regs; |
| 6211 | } |
| 6212 | |
| 6213 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 6214 | CodePatcher::CodePatcher(Isolate* isolate, byte* address, int instructions, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 6215 | FlushICache flush_cache) |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 6216 | : address_(address), |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 6217 | size_(instructions * Assembler::kInstrSize), |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 6218 | masm_(isolate, address, size_ + Assembler::kGap, CodeObjectRequired::kNo), |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 6219 | flush_cache_(flush_cache) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 6220 | // Create a new macro assembler pointing to the address of the code to patch. |
| 6221 | // The size is adjusted with kGap on order for the assembler to generate size |
| 6222 | // bytes of instructions without failing with buffer size constraints. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 6223 | DCHECK(masm_.reloc_info_writer.pos() == address_ + size_ + Assembler::kGap); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 6224 | } |
| 6225 | |
| 6226 | |
| 6227 | CodePatcher::~CodePatcher() { |
| 6228 | // Indicate that code has changed. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 6229 | if (flush_cache_ == FLUSH) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 6230 | Assembler::FlushICache(masm_.isolate(), address_, size_); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 6231 | } |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 6232 | |
| 6233 | // Check that the code was patched as expected. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 6234 | DCHECK(masm_.pc_ == address_ + size_); |
| 6235 | DCHECK(masm_.reloc_info_writer.pos() == address_ + size_ + Assembler::kGap); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 6236 | } |
| 6237 | |
| 6238 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 6239 | void CodePatcher::Emit(Instr instr) { |
| 6240 | masm()->emit(instr); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 6241 | } |
| 6242 | |
| 6243 | |
| 6244 | void CodePatcher::Emit(Address addr) { |
| 6245 | masm()->emit(reinterpret_cast<Instr>(addr)); |
| 6246 | } |
| 6247 | |
| 6248 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 6249 | void CodePatcher::ChangeBranchCondition(Instr current_instr, |
| 6250 | uint32_t new_opcode) { |
| 6251 | current_instr = (current_instr & ~kOpcodeMask) | new_opcode; |
| 6252 | masm_.emit(current_instr); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 6253 | } |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 6254 | |
| 6255 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 6256 | void MacroAssembler::TruncatingDiv(Register result, |
| 6257 | Register dividend, |
| 6258 | int32_t divisor) { |
| 6259 | DCHECK(!dividend.is(result)); |
| 6260 | DCHECK(!dividend.is(at)); |
| 6261 | DCHECK(!result.is(at)); |
| 6262 | base::MagicNumbersForDivision<uint32_t> mag = |
| 6263 | base::SignedDivisionByConstant(static_cast<uint32_t>(divisor)); |
| 6264 | li(at, Operand(mag.multiplier)); |
| 6265 | Mulh(result, dividend, Operand(at)); |
| 6266 | bool neg = (mag.multiplier & (static_cast<uint32_t>(1) << 31)) != 0; |
| 6267 | if (divisor > 0 && neg) { |
| 6268 | Addu(result, result, Operand(dividend)); |
| 6269 | } |
| 6270 | if (divisor < 0 && !neg && mag.multiplier > 0) { |
| 6271 | Subu(result, result, Operand(dividend)); |
| 6272 | } |
| 6273 | if (mag.shift > 0) sra(result, result, mag.shift); |
| 6274 | srl(at, dividend, 31); |
| 6275 | Addu(result, result, Operand(at)); |
| 6276 | } |
| 6277 | |
| 6278 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 6279 | } // namespace internal |
| 6280 | } // namespace v8 |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 6281 | |
Leon Clarke | f7060e2 | 2010-06-03 12:02:55 +0100 | [diff] [blame] | 6282 | #endif // V8_TARGET_ARCH_MIPS |