Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2 | // Copyright 2012 the V8 project authors. All rights reserved. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3 | // Use of this source code is governed by a BSD-style license that can be |
| 4 | // found in the LICENSE file. |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 5 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 6 | #include <limits.h> // For LONG_MIN, LONG_MAX. |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 7 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 8 | #if V8_TARGET_ARCH_MIPS |
Leon Clarke | f7060e2 | 2010-06-03 12:02:55 +0100 | [diff] [blame] | 9 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 10 | #include "src/base/bits.h" |
| 11 | #include "src/base/division-by-constant.h" |
| 12 | #include "src/bootstrapper.h" |
| 13 | #include "src/codegen.h" |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 14 | #include "src/debug/debug.h" |
| 15 | #include "src/mips/macro-assembler-mips.h" |
| 16 | #include "src/register-configuration.h" |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 17 | #include "src/runtime/runtime.h" |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 18 | |
| 19 | namespace v8 { |
| 20 | namespace internal { |
| 21 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 22 | MacroAssembler::MacroAssembler(Isolate* arg_isolate, void* buffer, int size, |
| 23 | CodeObjectRequired create_code_object) |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 24 | : Assembler(arg_isolate, buffer, size), |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 25 | generating_stub_(false), |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 26 | has_frame_(false), |
| 27 | has_double_zero_reg_set_(false) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 28 | if (create_code_object == CodeObjectRequired::kYes) { |
| 29 | code_object_ = |
| 30 | Handle<Object>::New(isolate()->heap()->undefined_value(), isolate()); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 31 | } |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 32 | } |
| 33 | |
| 34 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 35 | void MacroAssembler::Load(Register dst, |
| 36 | const MemOperand& src, |
| 37 | Representation r) { |
| 38 | DCHECK(!r.IsDouble()); |
| 39 | if (r.IsInteger8()) { |
| 40 | lb(dst, src); |
| 41 | } else if (r.IsUInteger8()) { |
| 42 | lbu(dst, src); |
| 43 | } else if (r.IsInteger16()) { |
| 44 | lh(dst, src); |
| 45 | } else if (r.IsUInteger16()) { |
| 46 | lhu(dst, src); |
| 47 | } else { |
| 48 | lw(dst, src); |
| 49 | } |
| 50 | } |
| 51 | |
| 52 | |
| 53 | void MacroAssembler::Store(Register src, |
| 54 | const MemOperand& dst, |
| 55 | Representation r) { |
| 56 | DCHECK(!r.IsDouble()); |
| 57 | if (r.IsInteger8() || r.IsUInteger8()) { |
| 58 | sb(src, dst); |
| 59 | } else if (r.IsInteger16() || r.IsUInteger16()) { |
| 60 | sh(src, dst); |
| 61 | } else { |
| 62 | if (r.IsHeapObject()) { |
| 63 | AssertNotSmi(src); |
| 64 | } else if (r.IsSmi()) { |
| 65 | AssertSmi(src); |
| 66 | } |
| 67 | sw(src, dst); |
| 68 | } |
| 69 | } |
| 70 | |
| 71 | |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 72 | void MacroAssembler::LoadRoot(Register destination, |
| 73 | Heap::RootListIndex index) { |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 74 | lw(destination, MemOperand(s6, index << kPointerSizeLog2)); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 75 | } |
| 76 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 77 | |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 78 | void MacroAssembler::LoadRoot(Register destination, |
| 79 | Heap::RootListIndex index, |
| 80 | Condition cond, |
| 81 | Register src1, const Operand& src2) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 82 | Branch(2, NegateCondition(cond), src1, src2); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 83 | lw(destination, MemOperand(s6, index << kPointerSizeLog2)); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 84 | } |
| 85 | |
| 86 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 87 | void MacroAssembler::StoreRoot(Register source, |
| 88 | Heap::RootListIndex index) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 89 | DCHECK(Heap::RootCanBeWrittenAfterInitialization(index)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 90 | sw(source, MemOperand(s6, index << kPointerSizeLog2)); |
| 91 | } |
| 92 | |
| 93 | |
| 94 | void MacroAssembler::StoreRoot(Register source, |
| 95 | Heap::RootListIndex index, |
| 96 | Condition cond, |
| 97 | Register src1, const Operand& src2) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 98 | DCHECK(Heap::RootCanBeWrittenAfterInitialization(index)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 99 | Branch(2, NegateCondition(cond), src1, src2); |
| 100 | sw(source, MemOperand(s6, index << kPointerSizeLog2)); |
| 101 | } |
| 102 | |
| 103 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 104 | // Push and pop all registers that can hold pointers. |
| 105 | void MacroAssembler::PushSafepointRegisters() { |
| 106 | // Safepoints expect a block of kNumSafepointRegisters values on the |
| 107 | // stack, so adjust the stack for unsaved registers. |
| 108 | const int num_unsaved = kNumSafepointRegisters - kNumSafepointSavedRegisters; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 109 | DCHECK(num_unsaved >= 0); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 110 | if (num_unsaved > 0) { |
| 111 | Subu(sp, sp, Operand(num_unsaved * kPointerSize)); |
| 112 | } |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 113 | MultiPush(kSafepointSavedRegisters); |
| 114 | } |
| 115 | |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 116 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 117 | void MacroAssembler::PopSafepointRegisters() { |
| 118 | const int num_unsaved = kNumSafepointRegisters - kNumSafepointSavedRegisters; |
| 119 | MultiPop(kSafepointSavedRegisters); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 120 | if (num_unsaved > 0) { |
| 121 | Addu(sp, sp, Operand(num_unsaved * kPointerSize)); |
| 122 | } |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 123 | } |
| 124 | |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 125 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 126 | void MacroAssembler::StoreToSafepointRegisterSlot(Register src, Register dst) { |
| 127 | sw(src, SafepointRegisterSlot(dst)); |
| 128 | } |
| 129 | |
| 130 | |
| 131 | void MacroAssembler::LoadFromSafepointRegisterSlot(Register dst, Register src) { |
| 132 | lw(dst, SafepointRegisterSlot(src)); |
| 133 | } |
| 134 | |
| 135 | |
| 136 | int MacroAssembler::SafepointRegisterStackIndex(int reg_code) { |
| 137 | // The registers are pushed starting with the highest encoding, |
| 138 | // which means that lowest encodings are closest to the stack pointer. |
| 139 | return kSafepointRegisterStackIndexMap[reg_code]; |
| 140 | } |
| 141 | |
| 142 | |
| 143 | MemOperand MacroAssembler::SafepointRegisterSlot(Register reg) { |
| 144 | return MemOperand(sp, SafepointRegisterStackIndex(reg.code()) * kPointerSize); |
| 145 | } |
| 146 | |
| 147 | |
| 148 | MemOperand MacroAssembler::SafepointRegistersAndDoublesSlot(Register reg) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 149 | UNIMPLEMENTED_MIPS(); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 150 | // General purpose registers are pushed last on the stack. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 151 | int doubles_size = DoubleRegister::kMaxNumRegisters * kDoubleSize; |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 152 | int register_offset = SafepointRegisterStackIndex(reg.code()) * kPointerSize; |
| 153 | return MemOperand(sp, doubles_size + register_offset); |
| 154 | } |
| 155 | |
| 156 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 157 | void MacroAssembler::InNewSpace(Register object, |
| 158 | Register scratch, |
| 159 | Condition cc, |
| 160 | Label* branch) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 161 | DCHECK(cc == eq || cc == ne); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame^] | 162 | const int mask = |
| 163 | 1 << MemoryChunk::IN_FROM_SPACE | 1 << MemoryChunk::IN_TO_SPACE; |
| 164 | CheckPageFlag(object, scratch, mask, cc, branch); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 165 | } |
| 166 | |
| 167 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 168 | // Clobbers object, dst, value, and ra, if (ra_status == kRAHasBeenSaved) |
| 169 | // The register 'object' contains a heap object pointer. The heap object |
| 170 | // tag is shifted away. |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 171 | void MacroAssembler::RecordWriteField( |
| 172 | Register object, |
| 173 | int offset, |
| 174 | Register value, |
| 175 | Register dst, |
| 176 | RAStatus ra_status, |
| 177 | SaveFPRegsMode save_fp, |
| 178 | RememberedSetAction remembered_set_action, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 179 | SmiCheck smi_check, |
| 180 | PointersToHereCheck pointers_to_here_check_for_value) { |
| 181 | DCHECK(!AreAliased(value, dst, t8, object)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 182 | // First, check if a write barrier is even needed. The tests below |
| 183 | // catch stores of Smis. |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 184 | Label done; |
| 185 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 186 | // Skip barrier if writing a smi. |
| 187 | if (smi_check == INLINE_SMI_CHECK) { |
| 188 | JumpIfSmi(value, &done); |
| 189 | } |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 190 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 191 | // Although the object register is tagged, the offset is relative to the start |
| 192 | // of the object, so so offset must be a multiple of kPointerSize. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 193 | DCHECK(IsAligned(offset, kPointerSize)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 194 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 195 | Addu(dst, object, Operand(offset - kHeapObjectTag)); |
| 196 | if (emit_debug_code()) { |
| 197 | Label ok; |
| 198 | And(t8, dst, Operand((1 << kPointerSizeLog2) - 1)); |
| 199 | Branch(&ok, eq, t8, Operand(zero_reg)); |
| 200 | stop("Unaligned cell in write barrier"); |
| 201 | bind(&ok); |
| 202 | } |
| 203 | |
| 204 | RecordWrite(object, |
| 205 | dst, |
| 206 | value, |
| 207 | ra_status, |
| 208 | save_fp, |
| 209 | remembered_set_action, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 210 | OMIT_SMI_CHECK, |
| 211 | pointers_to_here_check_for_value); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 212 | |
| 213 | bind(&done); |
| 214 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 215 | // Clobber clobbered input registers when running with the debug-code flag |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 216 | // turned on to provoke errors. |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 217 | if (emit_debug_code()) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 218 | li(value, Operand(bit_cast<int32_t>(kZapValue + 4))); |
| 219 | li(dst, Operand(bit_cast<int32_t>(kZapValue + 8))); |
| 220 | } |
| 221 | } |
| 222 | |
| 223 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 224 | // Clobbers object, dst, map, and ra, if (ra_status == kRAHasBeenSaved) |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 225 | void MacroAssembler::RecordWriteForMap(Register object, |
| 226 | Register map, |
| 227 | Register dst, |
| 228 | RAStatus ra_status, |
| 229 | SaveFPRegsMode fp_mode) { |
| 230 | if (emit_debug_code()) { |
| 231 | DCHECK(!dst.is(at)); |
| 232 | lw(dst, FieldMemOperand(map, HeapObject::kMapOffset)); |
| 233 | Check(eq, |
| 234 | kWrongAddressOrValuePassedToRecordWrite, |
| 235 | dst, |
| 236 | Operand(isolate()->factory()->meta_map())); |
| 237 | } |
| 238 | |
| 239 | if (!FLAG_incremental_marking) { |
| 240 | return; |
| 241 | } |
| 242 | |
| 243 | if (emit_debug_code()) { |
| 244 | lw(at, FieldMemOperand(object, HeapObject::kMapOffset)); |
| 245 | Check(eq, |
| 246 | kWrongAddressOrValuePassedToRecordWrite, |
| 247 | map, |
| 248 | Operand(at)); |
| 249 | } |
| 250 | |
| 251 | Label done; |
| 252 | |
| 253 | // A single check of the map's pages interesting flag suffices, since it is |
| 254 | // only set during incremental collection, and then it's also guaranteed that |
| 255 | // the from object's page's interesting flag is also set. This optimization |
| 256 | // relies on the fact that maps can never be in new space. |
| 257 | CheckPageFlag(map, |
| 258 | map, // Used as scratch. |
| 259 | MemoryChunk::kPointersToHereAreInterestingMask, |
| 260 | eq, |
| 261 | &done); |
| 262 | |
| 263 | Addu(dst, object, Operand(HeapObject::kMapOffset - kHeapObjectTag)); |
| 264 | if (emit_debug_code()) { |
| 265 | Label ok; |
| 266 | And(at, dst, Operand((1 << kPointerSizeLog2) - 1)); |
| 267 | Branch(&ok, eq, at, Operand(zero_reg)); |
| 268 | stop("Unaligned cell in write barrier"); |
| 269 | bind(&ok); |
| 270 | } |
| 271 | |
| 272 | // Record the actual write. |
| 273 | if (ra_status == kRAHasNotBeenSaved) { |
| 274 | push(ra); |
| 275 | } |
| 276 | RecordWriteStub stub(isolate(), object, map, dst, OMIT_REMEMBERED_SET, |
| 277 | fp_mode); |
| 278 | CallStub(&stub); |
| 279 | if (ra_status == kRAHasNotBeenSaved) { |
| 280 | pop(ra); |
| 281 | } |
| 282 | |
| 283 | bind(&done); |
| 284 | |
| 285 | // Count number of write barriers in generated code. |
| 286 | isolate()->counters()->write_barriers_static()->Increment(); |
| 287 | IncrementCounter(isolate()->counters()->write_barriers_dynamic(), 1, at, dst); |
| 288 | |
| 289 | // Clobber clobbered registers when running with the debug-code flag |
| 290 | // turned on to provoke errors. |
| 291 | if (emit_debug_code()) { |
| 292 | li(dst, Operand(bit_cast<int32_t>(kZapValue + 12))); |
| 293 | li(map, Operand(bit_cast<int32_t>(kZapValue + 16))); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 294 | } |
| 295 | } |
| 296 | |
| 297 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 298 | // Clobbers object, address, value, and ra, if (ra_status == kRAHasBeenSaved) |
| 299 | // The register 'object' contains a heap object pointer. The heap object |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 300 | // tag is shifted away. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 301 | void MacroAssembler::RecordWrite( |
| 302 | Register object, |
| 303 | Register address, |
| 304 | Register value, |
| 305 | RAStatus ra_status, |
| 306 | SaveFPRegsMode fp_mode, |
| 307 | RememberedSetAction remembered_set_action, |
| 308 | SmiCheck smi_check, |
| 309 | PointersToHereCheck pointers_to_here_check_for_value) { |
| 310 | DCHECK(!AreAliased(object, address, value, t8)); |
| 311 | DCHECK(!AreAliased(object, address, value, t9)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 312 | |
| 313 | if (emit_debug_code()) { |
| 314 | lw(at, MemOperand(address)); |
| 315 | Assert( |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 316 | eq, kWrongAddressOrValuePassedToRecordWrite, at, Operand(value)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 317 | } |
Ben Murdoch | c7cc028 | 2012-03-05 14:35:55 +0000 | [diff] [blame] | 318 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 319 | if (remembered_set_action == OMIT_REMEMBERED_SET && |
| 320 | !FLAG_incremental_marking) { |
| 321 | return; |
| 322 | } |
| 323 | |
| 324 | // First, check if a write barrier is even needed. The tests below |
| 325 | // catch stores of smis and stores into the young generation. |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 326 | Label done; |
| 327 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 328 | if (smi_check == INLINE_SMI_CHECK) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 329 | DCHECK_EQ(0, kSmiTag); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 330 | JumpIfSmi(value, &done); |
| 331 | } |
| 332 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 333 | if (pointers_to_here_check_for_value != kPointersToHereAreAlwaysInteresting) { |
| 334 | CheckPageFlag(value, |
| 335 | value, // Used as scratch. |
| 336 | MemoryChunk::kPointersToHereAreInterestingMask, |
| 337 | eq, |
| 338 | &done); |
| 339 | } |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 340 | CheckPageFlag(object, |
| 341 | value, // Used as scratch. |
| 342 | MemoryChunk::kPointersFromHereAreInterestingMask, |
| 343 | eq, |
| 344 | &done); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 345 | |
| 346 | // Record the actual write. |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 347 | if (ra_status == kRAHasNotBeenSaved) { |
| 348 | push(ra); |
| 349 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 350 | RecordWriteStub stub(isolate(), object, value, address, remembered_set_action, |
| 351 | fp_mode); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 352 | CallStub(&stub); |
| 353 | if (ra_status == kRAHasNotBeenSaved) { |
| 354 | pop(ra); |
| 355 | } |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 356 | |
| 357 | bind(&done); |
| 358 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 359 | // Count number of write barriers in generated code. |
| 360 | isolate()->counters()->write_barriers_static()->Increment(); |
| 361 | IncrementCounter(isolate()->counters()->write_barriers_dynamic(), 1, at, |
| 362 | value); |
| 363 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 364 | // Clobber clobbered registers when running with the debug-code flag |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 365 | // turned on to provoke errors. |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 366 | if (emit_debug_code()) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 367 | li(address, Operand(bit_cast<int32_t>(kZapValue + 12))); |
| 368 | li(value, Operand(bit_cast<int32_t>(kZapValue + 16))); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 369 | } |
| 370 | } |
| 371 | |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame^] | 372 | void MacroAssembler::RecordWriteCodeEntryField(Register js_function, |
| 373 | Register code_entry, |
| 374 | Register scratch) { |
| 375 | const int offset = JSFunction::kCodeEntryOffset; |
| 376 | |
| 377 | // Since a code entry (value) is always in old space, we don't need to update |
| 378 | // remembered set. If incremental marking is off, there is nothing for us to |
| 379 | // do. |
| 380 | if (!FLAG_incremental_marking) return; |
| 381 | |
| 382 | DCHECK(js_function.is(a1)); |
| 383 | DCHECK(code_entry.is(t0)); |
| 384 | DCHECK(scratch.is(t1)); |
| 385 | AssertNotSmi(js_function); |
| 386 | |
| 387 | if (emit_debug_code()) { |
| 388 | Addu(scratch, js_function, Operand(offset - kHeapObjectTag)); |
| 389 | lw(at, MemOperand(scratch)); |
| 390 | Assert(eq, kWrongAddressOrValuePassedToRecordWrite, at, |
| 391 | Operand(code_entry)); |
| 392 | } |
| 393 | |
| 394 | // First, check if a write barrier is even needed. The tests below |
| 395 | // catch stores of Smis and stores into young gen. |
| 396 | Label done; |
| 397 | |
| 398 | CheckPageFlag(code_entry, scratch, |
| 399 | MemoryChunk::kPointersToHereAreInterestingMask, eq, &done); |
| 400 | CheckPageFlag(js_function, scratch, |
| 401 | MemoryChunk::kPointersFromHereAreInterestingMask, eq, &done); |
| 402 | |
| 403 | const Register dst = scratch; |
| 404 | Addu(dst, js_function, Operand(offset - kHeapObjectTag)); |
| 405 | |
| 406 | // Save caller-saved registers. js_function and code_entry are in the |
| 407 | // caller-saved register list. |
| 408 | DCHECK(kJSCallerSaved & js_function.bit()); |
| 409 | DCHECK(kJSCallerSaved & code_entry.bit()); |
| 410 | MultiPush(kJSCallerSaved | ra.bit()); |
| 411 | |
| 412 | int argument_count = 3; |
| 413 | |
| 414 | PrepareCallCFunction(argument_count, 0, code_entry); |
| 415 | |
| 416 | mov(a0, js_function); |
| 417 | mov(a1, dst); |
| 418 | li(a2, Operand(ExternalReference::isolate_address(isolate()))); |
| 419 | |
| 420 | { |
| 421 | AllowExternalCallThatCantCauseGC scope(this); |
| 422 | CallCFunction( |
| 423 | ExternalReference::incremental_marking_record_write_code_entry_function( |
| 424 | isolate()), |
| 425 | argument_count); |
| 426 | } |
| 427 | |
| 428 | // Restore caller-saved registers. |
| 429 | MultiPop(kJSCallerSaved | ra.bit()); |
| 430 | |
| 431 | bind(&done); |
| 432 | } |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 433 | |
| 434 | void MacroAssembler::RememberedSetHelper(Register object, // For debug tests. |
| 435 | Register address, |
| 436 | Register scratch, |
| 437 | SaveFPRegsMode fp_mode, |
| 438 | RememberedSetFinalAction and_then) { |
| 439 | Label done; |
| 440 | if (emit_debug_code()) { |
| 441 | Label ok; |
| 442 | JumpIfNotInNewSpace(object, scratch, &ok); |
| 443 | stop("Remembered set pointer is in new space"); |
| 444 | bind(&ok); |
| 445 | } |
| 446 | // Load store buffer top. |
| 447 | ExternalReference store_buffer = |
| 448 | ExternalReference::store_buffer_top(isolate()); |
| 449 | li(t8, Operand(store_buffer)); |
| 450 | lw(scratch, MemOperand(t8)); |
| 451 | // Store pointer to buffer and increment buffer top. |
| 452 | sw(address, MemOperand(scratch)); |
| 453 | Addu(scratch, scratch, kPointerSize); |
| 454 | // Write back new top of buffer. |
| 455 | sw(scratch, MemOperand(t8)); |
| 456 | // Call stub on end of buffer. |
| 457 | // Check for end of buffer. |
| 458 | And(t8, scratch, Operand(StoreBuffer::kStoreBufferOverflowBit)); |
| 459 | if (and_then == kFallThroughAtEnd) { |
| 460 | Branch(&done, eq, t8, Operand(zero_reg)); |
| 461 | } else { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 462 | DCHECK(and_then == kReturnAtEnd); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 463 | Ret(eq, t8, Operand(zero_reg)); |
| 464 | } |
| 465 | push(ra); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 466 | StoreBufferOverflowStub store_buffer_overflow(isolate(), fp_mode); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 467 | CallStub(&store_buffer_overflow); |
| 468 | pop(ra); |
| 469 | bind(&done); |
| 470 | if (and_then == kReturnAtEnd) { |
| 471 | Ret(); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 472 | } |
| 473 | } |
| 474 | |
| 475 | |
| 476 | // ----------------------------------------------------------------------------- |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 477 | // Allocation support. |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 478 | |
| 479 | |
| 480 | void MacroAssembler::CheckAccessGlobalProxy(Register holder_reg, |
| 481 | Register scratch, |
| 482 | Label* miss) { |
| 483 | Label same_contexts; |
| 484 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 485 | DCHECK(!holder_reg.is(scratch)); |
| 486 | DCHECK(!holder_reg.is(at)); |
| 487 | DCHECK(!scratch.is(at)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 488 | |
| 489 | // Load current lexical context from the stack frame. |
| 490 | lw(scratch, MemOperand(fp, StandardFrameConstants::kContextOffset)); |
| 491 | // In debug mode, make sure the lexical context is set. |
| 492 | #ifdef DEBUG |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 493 | Check(ne, kWeShouldNotHaveAnEmptyLexicalContext, |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 494 | scratch, Operand(zero_reg)); |
| 495 | #endif |
| 496 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 497 | // Load the native context of the current context. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 498 | lw(scratch, ContextMemOperand(scratch, Context::NATIVE_CONTEXT_INDEX)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 499 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 500 | // Check the context is a native context. |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 501 | if (emit_debug_code()) { |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 502 | push(holder_reg); // Temporarily save holder on the stack. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 503 | // Read the first word and compare to the native_context_map. |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 504 | lw(holder_reg, FieldMemOperand(scratch, HeapObject::kMapOffset)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 505 | LoadRoot(at, Heap::kNativeContextMapRootIndex); |
| 506 | Check(eq, kJSGlobalObjectNativeContextShouldBeANativeContext, |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 507 | holder_reg, Operand(at)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 508 | pop(holder_reg); // Restore holder. |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 509 | } |
| 510 | |
| 511 | // Check if both contexts are the same. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 512 | lw(at, FieldMemOperand(holder_reg, JSGlobalProxy::kNativeContextOffset)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 513 | Branch(&same_contexts, eq, scratch, Operand(at)); |
| 514 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 515 | // Check the context is a native context. |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 516 | if (emit_debug_code()) { |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 517 | push(holder_reg); // Temporarily save holder on the stack. |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 518 | mov(holder_reg, at); // Move at to its holding place. |
| 519 | LoadRoot(at, Heap::kNullValueRootIndex); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 520 | Check(ne, kJSGlobalProxyContextShouldNotBeNull, |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 521 | holder_reg, Operand(at)); |
| 522 | |
| 523 | lw(holder_reg, FieldMemOperand(holder_reg, HeapObject::kMapOffset)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 524 | LoadRoot(at, Heap::kNativeContextMapRootIndex); |
| 525 | Check(eq, kJSGlobalObjectNativeContextShouldBeANativeContext, |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 526 | holder_reg, Operand(at)); |
| 527 | // Restore at is not needed. at is reloaded below. |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 528 | pop(holder_reg); // Restore holder. |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 529 | // Restore at to holder's context. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 530 | lw(at, FieldMemOperand(holder_reg, JSGlobalProxy::kNativeContextOffset)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 531 | } |
| 532 | |
| 533 | // Check that the security token in the calling global object is |
| 534 | // compatible with the security token in the receiving global |
| 535 | // object. |
| 536 | int token_offset = Context::kHeaderSize + |
| 537 | Context::SECURITY_TOKEN_INDEX * kPointerSize; |
| 538 | |
| 539 | lw(scratch, FieldMemOperand(scratch, token_offset)); |
| 540 | lw(at, FieldMemOperand(at, token_offset)); |
| 541 | Branch(miss, ne, scratch, Operand(at)); |
| 542 | |
| 543 | bind(&same_contexts); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 544 | } |
| 545 | |
| 546 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 547 | // Compute the hash code from the untagged key. This must be kept in sync with |
| 548 | // ComputeIntegerHash in utils.h and KeyedLoadGenericStub in |
| 549 | // code-stub-hydrogen.cc |
Ben Murdoch | c7cc028 | 2012-03-05 14:35:55 +0000 | [diff] [blame] | 550 | void MacroAssembler::GetNumberHash(Register reg0, Register scratch) { |
| 551 | // First of all we assign the hash seed to scratch. |
| 552 | LoadRoot(scratch, Heap::kHashSeedRootIndex); |
| 553 | SmiUntag(scratch); |
| 554 | |
| 555 | // Xor original key with a seed. |
| 556 | xor_(reg0, reg0, scratch); |
| 557 | |
| 558 | // Compute the hash code from the untagged key. This must be kept in sync |
| 559 | // with ComputeIntegerHash in utils.h. |
| 560 | // |
| 561 | // hash = ~hash + (hash << 15); |
| 562 | nor(scratch, reg0, zero_reg); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame^] | 563 | Lsa(reg0, scratch, reg0, 15); |
Ben Murdoch | c7cc028 | 2012-03-05 14:35:55 +0000 | [diff] [blame] | 564 | |
| 565 | // hash = hash ^ (hash >> 12); |
| 566 | srl(at, reg0, 12); |
| 567 | xor_(reg0, reg0, at); |
| 568 | |
| 569 | // hash = hash + (hash << 2); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame^] | 570 | Lsa(reg0, reg0, reg0, 2); |
Ben Murdoch | c7cc028 | 2012-03-05 14:35:55 +0000 | [diff] [blame] | 571 | |
| 572 | // hash = hash ^ (hash >> 4); |
| 573 | srl(at, reg0, 4); |
| 574 | xor_(reg0, reg0, at); |
| 575 | |
| 576 | // hash = hash * 2057; |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 577 | sll(scratch, reg0, 11); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame^] | 578 | Lsa(reg0, reg0, reg0, 3); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 579 | addu(reg0, reg0, scratch); |
Ben Murdoch | c7cc028 | 2012-03-05 14:35:55 +0000 | [diff] [blame] | 580 | |
| 581 | // hash = hash ^ (hash >> 16); |
| 582 | srl(at, reg0, 16); |
| 583 | xor_(reg0, reg0, at); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 584 | And(reg0, reg0, Operand(0x3fffffff)); |
Ben Murdoch | c7cc028 | 2012-03-05 14:35:55 +0000 | [diff] [blame] | 585 | } |
| 586 | |
| 587 | |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 588 | void MacroAssembler::LoadFromNumberDictionary(Label* miss, |
| 589 | Register elements, |
| 590 | Register key, |
| 591 | Register result, |
| 592 | Register reg0, |
| 593 | Register reg1, |
| 594 | Register reg2) { |
| 595 | // Register use: |
| 596 | // |
| 597 | // elements - holds the slow-case elements of the receiver on entry. |
| 598 | // Unchanged unless 'result' is the same register. |
| 599 | // |
| 600 | // key - holds the smi key on entry. |
| 601 | // Unchanged unless 'result' is the same register. |
| 602 | // |
| 603 | // |
| 604 | // result - holds the result on exit if the load succeeded. |
| 605 | // Allowed to be the same as 'key' or 'result'. |
| 606 | // Unchanged on bailout so 'key' or 'result' can be used |
| 607 | // in further computation. |
| 608 | // |
| 609 | // Scratch registers: |
| 610 | // |
| 611 | // reg0 - holds the untagged key on entry and holds the hash once computed. |
| 612 | // |
| 613 | // reg1 - Used to hold the capacity mask of the dictionary. |
| 614 | // |
| 615 | // reg2 - Used for the index into the dictionary. |
| 616 | // at - Temporary (avoid MacroAssembler instructions also using 'at'). |
| 617 | Label done; |
| 618 | |
Ben Murdoch | c7cc028 | 2012-03-05 14:35:55 +0000 | [diff] [blame] | 619 | GetNumberHash(reg0, reg1); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 620 | |
| 621 | // Compute the capacity mask. |
Ben Murdoch | c7cc028 | 2012-03-05 14:35:55 +0000 | [diff] [blame] | 622 | lw(reg1, FieldMemOperand(elements, SeededNumberDictionary::kCapacityOffset)); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 623 | sra(reg1, reg1, kSmiTagSize); |
| 624 | Subu(reg1, reg1, Operand(1)); |
| 625 | |
| 626 | // Generate an unrolled loop that performs a few probes before giving up. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 627 | for (int i = 0; i < kNumberDictionaryProbes; i++) { |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 628 | // Use reg2 for index calculations and keep the hash intact in reg0. |
| 629 | mov(reg2, reg0); |
| 630 | // Compute the masked index: (hash + i + i * i) & mask. |
| 631 | if (i > 0) { |
Ben Murdoch | c7cc028 | 2012-03-05 14:35:55 +0000 | [diff] [blame] | 632 | Addu(reg2, reg2, Operand(SeededNumberDictionary::GetProbeOffset(i))); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 633 | } |
| 634 | and_(reg2, reg2, reg1); |
| 635 | |
| 636 | // Scale the index by multiplying by the element size. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 637 | DCHECK(SeededNumberDictionary::kEntrySize == 3); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame^] | 638 | Lsa(reg2, reg2, reg2, 1); // reg2 = reg2 * 3. |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 639 | |
| 640 | // Check if the key is identical to the name. |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame^] | 641 | Lsa(reg2, elements, reg2, kPointerSizeLog2); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 642 | |
Ben Murdoch | c7cc028 | 2012-03-05 14:35:55 +0000 | [diff] [blame] | 643 | lw(at, FieldMemOperand(reg2, SeededNumberDictionary::kElementsStartOffset)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 644 | if (i != kNumberDictionaryProbes - 1) { |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 645 | Branch(&done, eq, key, Operand(at)); |
| 646 | } else { |
| 647 | Branch(miss, ne, key, Operand(at)); |
| 648 | } |
| 649 | } |
| 650 | |
| 651 | bind(&done); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 652 | // Check that the value is a field property. |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 653 | // reg2: elements + (index * kPointerSize). |
| 654 | const int kDetailsOffset = |
Ben Murdoch | c7cc028 | 2012-03-05 14:35:55 +0000 | [diff] [blame] | 655 | SeededNumberDictionary::kElementsStartOffset + 2 * kPointerSize; |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 656 | lw(reg1, FieldMemOperand(reg2, kDetailsOffset)); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 657 | DCHECK_EQ(DATA, 0); |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 658 | And(at, reg1, Operand(Smi::FromInt(PropertyDetails::TypeField::kMask))); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 659 | Branch(miss, ne, at, Operand(zero_reg)); |
| 660 | |
| 661 | // Get the value at the masked, scaled index and return. |
| 662 | const int kValueOffset = |
Ben Murdoch | c7cc028 | 2012-03-05 14:35:55 +0000 | [diff] [blame] | 663 | SeededNumberDictionary::kElementsStartOffset + kPointerSize; |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 664 | lw(result, FieldMemOperand(reg2, kValueOffset)); |
| 665 | } |
| 666 | |
| 667 | |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 668 | // --------------------------------------------------------------------------- |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 669 | // Instruction macros. |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 670 | |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 671 | void MacroAssembler::Addu(Register rd, Register rs, const Operand& rt) { |
| 672 | if (rt.is_reg()) { |
| 673 | addu(rd, rs, rt.rm()); |
| 674 | } else { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 675 | if (is_int16(rt.imm32_) && !MustUseReg(rt.rmode_)) { |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 676 | addiu(rd, rs, rt.imm32_); |
| 677 | } else { |
| 678 | // li handles the relocation. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 679 | DCHECK(!rs.is(at)); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 680 | li(at, rt); |
| 681 | addu(rd, rs, at); |
| 682 | } |
| 683 | } |
| 684 | } |
| 685 | |
| 686 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 687 | void MacroAssembler::Subu(Register rd, Register rs, const Operand& rt) { |
| 688 | if (rt.is_reg()) { |
| 689 | subu(rd, rs, rt.rm()); |
| 690 | } else { |
| 691 | if (is_int16(rt.imm32_) && !MustUseReg(rt.rmode_)) { |
| 692 | addiu(rd, rs, -rt.imm32_); // No subiu instr, use addiu(x, y, -imm). |
| 693 | } else { |
| 694 | // li handles the relocation. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 695 | DCHECK(!rs.is(at)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 696 | li(at, rt); |
| 697 | subu(rd, rs, at); |
| 698 | } |
| 699 | } |
| 700 | } |
| 701 | |
| 702 | |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 703 | void MacroAssembler::Mul(Register rd, Register rs, const Operand& rt) { |
| 704 | if (rt.is_reg()) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 705 | if (IsMipsArchVariant(kLoongson)) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 706 | mult(rs, rt.rm()); |
| 707 | mflo(rd); |
| 708 | } else { |
| 709 | mul(rd, rs, rt.rm()); |
| 710 | } |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 711 | } else { |
| 712 | // li handles the relocation. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 713 | DCHECK(!rs.is(at)); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 714 | li(at, rt); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 715 | if (IsMipsArchVariant(kLoongson)) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 716 | mult(rs, at); |
| 717 | mflo(rd); |
| 718 | } else { |
| 719 | mul(rd, rs, at); |
| 720 | } |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 721 | } |
| 722 | } |
| 723 | |
| 724 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 725 | void MacroAssembler::Mul(Register rd_hi, Register rd_lo, |
| 726 | Register rs, const Operand& rt) { |
| 727 | if (rt.is_reg()) { |
| 728 | if (!IsMipsArchVariant(kMips32r6)) { |
| 729 | mult(rs, rt.rm()); |
| 730 | mflo(rd_lo); |
| 731 | mfhi(rd_hi); |
| 732 | } else { |
| 733 | if (rd_lo.is(rs)) { |
| 734 | DCHECK(!rd_hi.is(rs)); |
| 735 | DCHECK(!rd_hi.is(rt.rm()) && !rd_lo.is(rt.rm())); |
| 736 | muh(rd_hi, rs, rt.rm()); |
| 737 | mul(rd_lo, rs, rt.rm()); |
| 738 | } else { |
| 739 | DCHECK(!rd_hi.is(rt.rm()) && !rd_lo.is(rt.rm())); |
| 740 | mul(rd_lo, rs, rt.rm()); |
| 741 | muh(rd_hi, rs, rt.rm()); |
| 742 | } |
| 743 | } |
| 744 | } else { |
| 745 | // li handles the relocation. |
| 746 | DCHECK(!rs.is(at)); |
| 747 | li(at, rt); |
| 748 | if (!IsMipsArchVariant(kMips32r6)) { |
| 749 | mult(rs, at); |
| 750 | mflo(rd_lo); |
| 751 | mfhi(rd_hi); |
| 752 | } else { |
| 753 | if (rd_lo.is(rs)) { |
| 754 | DCHECK(!rd_hi.is(rs)); |
| 755 | DCHECK(!rd_hi.is(at) && !rd_lo.is(at)); |
| 756 | muh(rd_hi, rs, at); |
| 757 | mul(rd_lo, rs, at); |
| 758 | } else { |
| 759 | DCHECK(!rd_hi.is(at) && !rd_lo.is(at)); |
| 760 | mul(rd_lo, rs, at); |
| 761 | muh(rd_hi, rs, at); |
| 762 | } |
| 763 | } |
| 764 | } |
| 765 | } |
| 766 | |
| 767 | |
| 768 | void MacroAssembler::Mulh(Register rd, Register rs, const Operand& rt) { |
| 769 | if (rt.is_reg()) { |
| 770 | if (!IsMipsArchVariant(kMips32r6)) { |
| 771 | mult(rs, rt.rm()); |
| 772 | mfhi(rd); |
| 773 | } else { |
| 774 | muh(rd, rs, rt.rm()); |
| 775 | } |
| 776 | } else { |
| 777 | // li handles the relocation. |
| 778 | DCHECK(!rs.is(at)); |
| 779 | li(at, rt); |
| 780 | if (!IsMipsArchVariant(kMips32r6)) { |
| 781 | mult(rs, at); |
| 782 | mfhi(rd); |
| 783 | } else { |
| 784 | muh(rd, rs, at); |
| 785 | } |
| 786 | } |
| 787 | } |
| 788 | |
| 789 | |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 790 | void MacroAssembler::Mult(Register rs, const Operand& rt) { |
| 791 | if (rt.is_reg()) { |
| 792 | mult(rs, rt.rm()); |
| 793 | } else { |
| 794 | // li handles the relocation. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 795 | DCHECK(!rs.is(at)); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 796 | li(at, rt); |
| 797 | mult(rs, at); |
| 798 | } |
| 799 | } |
| 800 | |
| 801 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 802 | void MacroAssembler::Mulhu(Register rd, Register rs, const Operand& rt) { |
| 803 | if (rt.is_reg()) { |
| 804 | if (!IsMipsArchVariant(kMips32r6)) { |
| 805 | multu(rs, rt.rm()); |
| 806 | mfhi(rd); |
| 807 | } else { |
| 808 | muhu(rd, rs, rt.rm()); |
| 809 | } |
| 810 | } else { |
| 811 | // li handles the relocation. |
| 812 | DCHECK(!rs.is(at)); |
| 813 | li(at, rt); |
| 814 | if (!IsMipsArchVariant(kMips32r6)) { |
| 815 | multu(rs, at); |
| 816 | mfhi(rd); |
| 817 | } else { |
| 818 | muhu(rd, rs, at); |
| 819 | } |
| 820 | } |
| 821 | } |
| 822 | |
| 823 | |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 824 | void MacroAssembler::Multu(Register rs, const Operand& rt) { |
| 825 | if (rt.is_reg()) { |
| 826 | multu(rs, rt.rm()); |
| 827 | } else { |
| 828 | // li handles the relocation. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 829 | DCHECK(!rs.is(at)); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 830 | li(at, rt); |
| 831 | multu(rs, at); |
| 832 | } |
| 833 | } |
| 834 | |
| 835 | |
| 836 | void MacroAssembler::Div(Register rs, const Operand& rt) { |
| 837 | if (rt.is_reg()) { |
| 838 | div(rs, rt.rm()); |
| 839 | } else { |
| 840 | // li handles the relocation. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 841 | DCHECK(!rs.is(at)); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 842 | li(at, rt); |
| 843 | div(rs, at); |
| 844 | } |
| 845 | } |
| 846 | |
| 847 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 848 | void MacroAssembler::Div(Register rem, Register res, |
| 849 | Register rs, const Operand& rt) { |
| 850 | if (rt.is_reg()) { |
| 851 | if (!IsMipsArchVariant(kMips32r6)) { |
| 852 | div(rs, rt.rm()); |
| 853 | mflo(res); |
| 854 | mfhi(rem); |
| 855 | } else { |
| 856 | div(res, rs, rt.rm()); |
| 857 | mod(rem, rs, rt.rm()); |
| 858 | } |
| 859 | } else { |
| 860 | // li handles the relocation. |
| 861 | DCHECK(!rs.is(at)); |
| 862 | li(at, rt); |
| 863 | if (!IsMipsArchVariant(kMips32r6)) { |
| 864 | div(rs, at); |
| 865 | mflo(res); |
| 866 | mfhi(rem); |
| 867 | } else { |
| 868 | div(res, rs, at); |
| 869 | mod(rem, rs, at); |
| 870 | } |
| 871 | } |
| 872 | } |
| 873 | |
| 874 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 875 | void MacroAssembler::Div(Register res, Register rs, const Operand& rt) { |
| 876 | if (rt.is_reg()) { |
| 877 | if (!IsMipsArchVariant(kMips32r6)) { |
| 878 | div(rs, rt.rm()); |
| 879 | mflo(res); |
| 880 | } else { |
| 881 | div(res, rs, rt.rm()); |
| 882 | } |
| 883 | } else { |
| 884 | // li handles the relocation. |
| 885 | DCHECK(!rs.is(at)); |
| 886 | li(at, rt); |
| 887 | if (!IsMipsArchVariant(kMips32r6)) { |
| 888 | div(rs, at); |
| 889 | mflo(res); |
| 890 | } else { |
| 891 | div(res, rs, at); |
| 892 | } |
| 893 | } |
| 894 | } |
| 895 | |
| 896 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 897 | void MacroAssembler::Mod(Register rd, Register rs, const Operand& rt) { |
| 898 | if (rt.is_reg()) { |
| 899 | if (!IsMipsArchVariant(kMips32r6)) { |
| 900 | div(rs, rt.rm()); |
| 901 | mfhi(rd); |
| 902 | } else { |
| 903 | mod(rd, rs, rt.rm()); |
| 904 | } |
| 905 | } else { |
| 906 | // li handles the relocation. |
| 907 | DCHECK(!rs.is(at)); |
| 908 | li(at, rt); |
| 909 | if (!IsMipsArchVariant(kMips32r6)) { |
| 910 | div(rs, at); |
| 911 | mfhi(rd); |
| 912 | } else { |
| 913 | mod(rd, rs, at); |
| 914 | } |
| 915 | } |
| 916 | } |
| 917 | |
| 918 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 919 | void MacroAssembler::Modu(Register rd, Register rs, const Operand& rt) { |
| 920 | if (rt.is_reg()) { |
| 921 | if (!IsMipsArchVariant(kMips32r6)) { |
| 922 | divu(rs, rt.rm()); |
| 923 | mfhi(rd); |
| 924 | } else { |
| 925 | modu(rd, rs, rt.rm()); |
| 926 | } |
| 927 | } else { |
| 928 | // li handles the relocation. |
| 929 | DCHECK(!rs.is(at)); |
| 930 | li(at, rt); |
| 931 | if (!IsMipsArchVariant(kMips32r6)) { |
| 932 | divu(rs, at); |
| 933 | mfhi(rd); |
| 934 | } else { |
| 935 | modu(rd, rs, at); |
| 936 | } |
| 937 | } |
| 938 | } |
| 939 | |
| 940 | |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 941 | void MacroAssembler::Divu(Register rs, const Operand& rt) { |
| 942 | if (rt.is_reg()) { |
| 943 | divu(rs, rt.rm()); |
| 944 | } else { |
| 945 | // li handles the relocation. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 946 | DCHECK(!rs.is(at)); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 947 | li(at, rt); |
| 948 | divu(rs, at); |
| 949 | } |
| 950 | } |
| 951 | |
| 952 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 953 | void MacroAssembler::Divu(Register res, Register rs, const Operand& rt) { |
| 954 | if (rt.is_reg()) { |
| 955 | if (!IsMipsArchVariant(kMips32r6)) { |
| 956 | divu(rs, rt.rm()); |
| 957 | mflo(res); |
| 958 | } else { |
| 959 | divu(res, rs, rt.rm()); |
| 960 | } |
| 961 | } else { |
| 962 | // li handles the relocation. |
| 963 | DCHECK(!rs.is(at)); |
| 964 | li(at, rt); |
| 965 | if (!IsMipsArchVariant(kMips32r6)) { |
| 966 | divu(rs, at); |
| 967 | mflo(res); |
| 968 | } else { |
| 969 | divu(res, rs, at); |
| 970 | } |
| 971 | } |
| 972 | } |
| 973 | |
| 974 | |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 975 | void MacroAssembler::And(Register rd, Register rs, const Operand& rt) { |
| 976 | if (rt.is_reg()) { |
| 977 | and_(rd, rs, rt.rm()); |
| 978 | } else { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 979 | if (is_uint16(rt.imm32_) && !MustUseReg(rt.rmode_)) { |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 980 | andi(rd, rs, rt.imm32_); |
| 981 | } else { |
| 982 | // li handles the relocation. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 983 | DCHECK(!rs.is(at)); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 984 | li(at, rt); |
| 985 | and_(rd, rs, at); |
| 986 | } |
| 987 | } |
| 988 | } |
| 989 | |
| 990 | |
| 991 | void MacroAssembler::Or(Register rd, Register rs, const Operand& rt) { |
| 992 | if (rt.is_reg()) { |
| 993 | or_(rd, rs, rt.rm()); |
| 994 | } else { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 995 | if (is_uint16(rt.imm32_) && !MustUseReg(rt.rmode_)) { |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 996 | ori(rd, rs, rt.imm32_); |
| 997 | } else { |
| 998 | // li handles the relocation. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 999 | DCHECK(!rs.is(at)); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1000 | li(at, rt); |
| 1001 | or_(rd, rs, at); |
| 1002 | } |
| 1003 | } |
| 1004 | } |
| 1005 | |
| 1006 | |
| 1007 | void MacroAssembler::Xor(Register rd, Register rs, const Operand& rt) { |
| 1008 | if (rt.is_reg()) { |
| 1009 | xor_(rd, rs, rt.rm()); |
| 1010 | } else { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1011 | if (is_uint16(rt.imm32_) && !MustUseReg(rt.rmode_)) { |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1012 | xori(rd, rs, rt.imm32_); |
| 1013 | } else { |
| 1014 | // li handles the relocation. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1015 | DCHECK(!rs.is(at)); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1016 | li(at, rt); |
| 1017 | xor_(rd, rs, at); |
| 1018 | } |
| 1019 | } |
| 1020 | } |
| 1021 | |
| 1022 | |
| 1023 | void MacroAssembler::Nor(Register rd, Register rs, const Operand& rt) { |
| 1024 | if (rt.is_reg()) { |
| 1025 | nor(rd, rs, rt.rm()); |
| 1026 | } else { |
| 1027 | // li handles the relocation. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1028 | DCHECK(!rs.is(at)); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1029 | li(at, rt); |
| 1030 | nor(rd, rs, at); |
| 1031 | } |
| 1032 | } |
| 1033 | |
| 1034 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1035 | void MacroAssembler::Neg(Register rs, const Operand& rt) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1036 | DCHECK(rt.is_reg()); |
| 1037 | DCHECK(!at.is(rs)); |
| 1038 | DCHECK(!at.is(rt.rm())); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1039 | li(at, -1); |
| 1040 | xor_(rs, rt.rm(), at); |
| 1041 | } |
| 1042 | |
| 1043 | |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1044 | void MacroAssembler::Slt(Register rd, Register rs, const Operand& rt) { |
| 1045 | if (rt.is_reg()) { |
| 1046 | slt(rd, rs, rt.rm()); |
| 1047 | } else { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1048 | if (is_int16(rt.imm32_) && !MustUseReg(rt.rmode_)) { |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1049 | slti(rd, rs, rt.imm32_); |
| 1050 | } else { |
| 1051 | // li handles the relocation. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1052 | DCHECK(!rs.is(at)); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1053 | li(at, rt); |
| 1054 | slt(rd, rs, at); |
| 1055 | } |
| 1056 | } |
| 1057 | } |
| 1058 | |
| 1059 | |
| 1060 | void MacroAssembler::Sltu(Register rd, Register rs, const Operand& rt) { |
| 1061 | if (rt.is_reg()) { |
| 1062 | sltu(rd, rs, rt.rm()); |
| 1063 | } else { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1064 | if (is_uint16(rt.imm32_) && !MustUseReg(rt.rmode_)) { |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1065 | sltiu(rd, rs, rt.imm32_); |
| 1066 | } else { |
| 1067 | // li handles the relocation. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1068 | DCHECK(!rs.is(at)); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1069 | li(at, rt); |
| 1070 | sltu(rd, rs, at); |
| 1071 | } |
| 1072 | } |
| 1073 | } |
| 1074 | |
| 1075 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1076 | void MacroAssembler::Ror(Register rd, Register rs, const Operand& rt) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1077 | if (IsMipsArchVariant(kMips32r2) || IsMipsArchVariant(kMips32r6)) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1078 | if (rt.is_reg()) { |
| 1079 | rotrv(rd, rs, rt.rm()); |
| 1080 | } else { |
| 1081 | rotr(rd, rs, rt.imm32_); |
| 1082 | } |
| 1083 | } else { |
| 1084 | if (rt.is_reg()) { |
| 1085 | subu(at, zero_reg, rt.rm()); |
| 1086 | sllv(at, rs, at); |
| 1087 | srlv(rd, rs, rt.rm()); |
| 1088 | or_(rd, rd, at); |
| 1089 | } else { |
| 1090 | if (rt.imm32_ == 0) { |
| 1091 | srl(rd, rs, 0); |
| 1092 | } else { |
| 1093 | srl(at, rs, rt.imm32_); |
| 1094 | sll(rd, rs, (0x20 - rt.imm32_) & 0x1f); |
| 1095 | or_(rd, rd, at); |
| 1096 | } |
| 1097 | } |
| 1098 | } |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1099 | } |
| 1100 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1101 | |
| 1102 | void MacroAssembler::Pref(int32_t hint, const MemOperand& rs) { |
| 1103 | if (IsMipsArchVariant(kLoongson)) { |
| 1104 | lw(zero_reg, rs); |
| 1105 | } else { |
| 1106 | pref(hint, rs); |
| 1107 | } |
| 1108 | } |
| 1109 | |
| 1110 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1111 | void MacroAssembler::Lsa(Register rd, Register rt, Register rs, uint8_t sa, |
| 1112 | Register scratch) { |
| 1113 | if (IsMipsArchVariant(kMips32r6) && sa <= 4) { |
| 1114 | lsa(rd, rt, rs, sa); |
| 1115 | } else { |
| 1116 | Register tmp = rd.is(rt) ? scratch : rd; |
| 1117 | DCHECK(!tmp.is(rt)); |
| 1118 | sll(tmp, rs, sa); |
| 1119 | Addu(rd, rt, tmp); |
| 1120 | } |
| 1121 | } |
| 1122 | |
| 1123 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1124 | // ------------Pseudo-instructions------------- |
| 1125 | |
| 1126 | void MacroAssembler::Ulw(Register rd, const MemOperand& rs) { |
| 1127 | lwr(rd, rs); |
| 1128 | lwl(rd, MemOperand(rs.rm(), rs.offset() + 3)); |
| 1129 | } |
| 1130 | |
| 1131 | |
| 1132 | void MacroAssembler::Usw(Register rd, const MemOperand& rs) { |
| 1133 | swr(rd, rs); |
| 1134 | swl(rd, MemOperand(rs.rm(), rs.offset() + 3)); |
| 1135 | } |
| 1136 | |
| 1137 | |
| 1138 | void MacroAssembler::li(Register dst, Handle<Object> value, LiFlags mode) { |
| 1139 | AllowDeferredHandleDereference smi_check; |
| 1140 | if (value->IsSmi()) { |
| 1141 | li(dst, Operand(value), mode); |
| 1142 | } else { |
| 1143 | DCHECK(value->IsHeapObject()); |
| 1144 | if (isolate()->heap()->InNewSpace(*value)) { |
| 1145 | Handle<Cell> cell = isolate()->factory()->NewCell(value); |
| 1146 | li(dst, Operand(cell)); |
| 1147 | lw(dst, FieldMemOperand(dst, Cell::kValueOffset)); |
| 1148 | } else { |
| 1149 | li(dst, Operand(value)); |
| 1150 | } |
| 1151 | } |
| 1152 | } |
| 1153 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1154 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1155 | void MacroAssembler::li(Register rd, Operand j, LiFlags mode) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1156 | DCHECK(!j.is_reg()); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1157 | BlockTrampolinePoolScope block_trampoline_pool(this); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1158 | if (!MustUseReg(j.rmode_) && mode == OPTIMIZE_SIZE) { |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1159 | // Normal load of an immediate value which does not need Relocation Info. |
| 1160 | if (is_int16(j.imm32_)) { |
| 1161 | addiu(rd, zero_reg, j.imm32_); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1162 | } else if (!(j.imm32_ & kHiMask)) { |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1163 | ori(rd, zero_reg, j.imm32_); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1164 | } else if (!(j.imm32_ & kImm16Mask)) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1165 | lui(rd, (j.imm32_ >> kLuiShift) & kImm16Mask); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1166 | } else { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1167 | lui(rd, (j.imm32_ >> kLuiShift) & kImm16Mask); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1168 | ori(rd, rd, (j.imm32_ & kImm16Mask)); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1169 | } |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1170 | } else { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1171 | if (MustUseReg(j.rmode_)) { |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1172 | RecordRelocInfo(j.rmode_, j.imm32_); |
| 1173 | } |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1174 | // 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] | 1175 | // 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] | 1176 | lui(rd, (j.imm32_ >> kLuiShift) & kImm16Mask); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1177 | ori(rd, rd, (j.imm32_ & kImm16Mask)); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1178 | } |
| 1179 | } |
| 1180 | |
| 1181 | |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1182 | void MacroAssembler::MultiPush(RegList regs) { |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 1183 | int16_t num_to_push = NumberOfBitsSet(regs); |
| 1184 | int16_t stack_offset = num_to_push * kPointerSize; |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1185 | |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 1186 | Subu(sp, sp, Operand(stack_offset)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1187 | for (int16_t i = kNumRegisters - 1; i >= 0; i--) { |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1188 | if ((regs & (1 << i)) != 0) { |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 1189 | stack_offset -= kPointerSize; |
| 1190 | sw(ToRegister(i), MemOperand(sp, stack_offset)); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1191 | } |
| 1192 | } |
| 1193 | } |
| 1194 | |
| 1195 | |
| 1196 | void MacroAssembler::MultiPushReversed(RegList regs) { |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 1197 | int16_t num_to_push = NumberOfBitsSet(regs); |
| 1198 | int16_t stack_offset = num_to_push * kPointerSize; |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1199 | |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 1200 | Subu(sp, sp, Operand(stack_offset)); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 1201 | for (int16_t i = 0; i < kNumRegisters; i++) { |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1202 | if ((regs & (1 << i)) != 0) { |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 1203 | stack_offset -= kPointerSize; |
| 1204 | sw(ToRegister(i), MemOperand(sp, stack_offset)); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1205 | } |
| 1206 | } |
| 1207 | } |
| 1208 | |
| 1209 | |
| 1210 | void MacroAssembler::MultiPop(RegList regs) { |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 1211 | int16_t stack_offset = 0; |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1212 | |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 1213 | for (int16_t i = 0; i < kNumRegisters; i++) { |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1214 | if ((regs & (1 << i)) != 0) { |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 1215 | lw(ToRegister(i), MemOperand(sp, stack_offset)); |
| 1216 | stack_offset += kPointerSize; |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1217 | } |
| 1218 | } |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 1219 | addiu(sp, sp, stack_offset); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1220 | } |
| 1221 | |
| 1222 | |
| 1223 | void MacroAssembler::MultiPopReversed(RegList regs) { |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 1224 | int16_t stack_offset = 0; |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1225 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1226 | for (int16_t i = kNumRegisters - 1; i >= 0; i--) { |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1227 | if ((regs & (1 << i)) != 0) { |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 1228 | lw(ToRegister(i), MemOperand(sp, stack_offset)); |
| 1229 | stack_offset += kPointerSize; |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1230 | } |
| 1231 | } |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 1232 | addiu(sp, sp, stack_offset); |
| 1233 | } |
| 1234 | |
| 1235 | |
| 1236 | void MacroAssembler::MultiPushFPU(RegList regs) { |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 1237 | int16_t num_to_push = NumberOfBitsSet(regs); |
| 1238 | int16_t stack_offset = num_to_push * kDoubleSize; |
| 1239 | |
| 1240 | Subu(sp, sp, Operand(stack_offset)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1241 | for (int16_t i = kNumRegisters - 1; i >= 0; i--) { |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 1242 | if ((regs & (1 << i)) != 0) { |
| 1243 | stack_offset -= kDoubleSize; |
| 1244 | sdc1(FPURegister::from_code(i), MemOperand(sp, stack_offset)); |
| 1245 | } |
| 1246 | } |
| 1247 | } |
| 1248 | |
| 1249 | |
| 1250 | void MacroAssembler::MultiPushReversedFPU(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 * kDoubleSize; |
| 1253 | |
| 1254 | Subu(sp, sp, Operand(stack_offset)); |
| 1255 | for (int16_t i = 0; i < kNumRegisters; i++) { |
| 1256 | if ((regs & (1 << i)) != 0) { |
| 1257 | stack_offset -= kDoubleSize; |
| 1258 | sdc1(FPURegister::from_code(i), MemOperand(sp, stack_offset)); |
| 1259 | } |
| 1260 | } |
| 1261 | } |
| 1262 | |
| 1263 | |
| 1264 | void MacroAssembler::MultiPopFPU(RegList regs) { |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 1265 | int16_t stack_offset = 0; |
| 1266 | |
| 1267 | for (int16_t i = 0; i < kNumRegisters; i++) { |
| 1268 | if ((regs & (1 << i)) != 0) { |
| 1269 | ldc1(FPURegister::from_code(i), MemOperand(sp, stack_offset)); |
| 1270 | stack_offset += kDoubleSize; |
| 1271 | } |
| 1272 | } |
| 1273 | addiu(sp, sp, stack_offset); |
| 1274 | } |
| 1275 | |
| 1276 | |
| 1277 | void MacroAssembler::MultiPopReversedFPU(RegList regs) { |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 1278 | int16_t stack_offset = 0; |
| 1279 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1280 | for (int16_t i = kNumRegisters - 1; i >= 0; i--) { |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 1281 | if ((regs & (1 << i)) != 0) { |
| 1282 | ldc1(FPURegister::from_code(i), MemOperand(sp, stack_offset)); |
| 1283 | stack_offset += kDoubleSize; |
| 1284 | } |
| 1285 | } |
| 1286 | addiu(sp, sp, stack_offset); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1287 | } |
| 1288 | |
| 1289 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1290 | void MacroAssembler::Ext(Register rt, |
| 1291 | Register rs, |
| 1292 | uint16_t pos, |
| 1293 | uint16_t size) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1294 | DCHECK(pos < 32); |
| 1295 | DCHECK(pos + size < 33); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1296 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1297 | if (IsMipsArchVariant(kMips32r2) || IsMipsArchVariant(kMips32r6)) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1298 | ext_(rt, rs, pos, size); |
| 1299 | } else { |
| 1300 | // Move rs to rt and shift it left then right to get the |
| 1301 | // desired bitfield on the right side and zeroes on the left. |
Ben Murdoch | 69a99ed | 2011-11-30 16:03:39 +0000 | [diff] [blame] | 1302 | int shift_left = 32 - (pos + size); |
| 1303 | sll(rt, rs, shift_left); // Acts as a move if shift_left == 0. |
| 1304 | |
| 1305 | int shift_right = 32 - size; |
| 1306 | if (shift_right > 0) { |
| 1307 | srl(rt, rt, shift_right); |
| 1308 | } |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1309 | } |
| 1310 | } |
| 1311 | |
| 1312 | |
| 1313 | void MacroAssembler::Ins(Register rt, |
| 1314 | Register rs, |
| 1315 | uint16_t pos, |
| 1316 | uint16_t size) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1317 | DCHECK(pos < 32); |
| 1318 | DCHECK(pos + size <= 32); |
| 1319 | DCHECK(size != 0); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1320 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1321 | if (IsMipsArchVariant(kMips32r2) || IsMipsArchVariant(kMips32r6)) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1322 | ins_(rt, rs, pos, size); |
| 1323 | } else { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1324 | DCHECK(!rt.is(t8) && !rs.is(t8)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1325 | Subu(at, zero_reg, Operand(1)); |
| 1326 | srl(at, at, 32 - size); |
| 1327 | and_(t8, rs, at); |
| 1328 | sll(t8, t8, pos); |
| 1329 | sll(at, at, pos); |
| 1330 | nor(at, at, zero_reg); |
| 1331 | and_(at, rt, at); |
| 1332 | or_(rt, t8, at); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1333 | } |
| 1334 | } |
| 1335 | |
| 1336 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1337 | void MacroAssembler::Cvt_d_uw(FPURegister fd, Register rs, |
Ben Murdoch | 69a99ed | 2011-11-30 16:03:39 +0000 | [diff] [blame] | 1338 | FPURegister scratch) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1339 | // In FP64Mode we do convertion from long. |
| 1340 | if (IsFp64Mode()) { |
| 1341 | mtc1(rs, scratch); |
| 1342 | Mthc1(zero_reg, scratch); |
| 1343 | cvt_d_l(fd, scratch); |
| 1344 | } else { |
| 1345 | // Convert rs to a FP value in fd. |
| 1346 | DCHECK(!fd.is(scratch)); |
| 1347 | DCHECK(!rs.is(at)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1348 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1349 | Label msb_clear, conversion_done; |
| 1350 | // For a value which is < 2^31, regard it as a signed positve word. |
| 1351 | Branch(&msb_clear, ge, rs, Operand(zero_reg), USE_DELAY_SLOT); |
| 1352 | mtc1(rs, fd); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1353 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1354 | li(at, 0x41F00000); // FP value: 2^32. |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1355 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1356 | // For unsigned inputs > 2^31, we convert to double as a signed int32, |
| 1357 | // then add 2^32 to move it back to unsigned value in range 2^31..2^31-1. |
| 1358 | mtc1(zero_reg, scratch); |
| 1359 | Mthc1(at, scratch); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1360 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1361 | cvt_d_w(fd, fd); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1362 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1363 | Branch(USE_DELAY_SLOT, &conversion_done); |
| 1364 | add_d(fd, fd, scratch); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1365 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1366 | bind(&msb_clear); |
| 1367 | cvt_d_w(fd, fd); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1368 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1369 | bind(&conversion_done); |
| 1370 | } |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1371 | } |
| 1372 | |
| 1373 | |
Ben Murdoch | 69a99ed | 2011-11-30 16:03:39 +0000 | [diff] [blame] | 1374 | void MacroAssembler::Trunc_uw_d(FPURegister fd, |
| 1375 | FPURegister fs, |
| 1376 | FPURegister scratch) { |
| 1377 | Trunc_uw_d(fs, t8, scratch); |
| 1378 | mtc1(t8, fd); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1379 | } |
| 1380 | |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame^] | 1381 | void MacroAssembler::Trunc_uw_s(FPURegister fd, FPURegister fs, |
| 1382 | FPURegister scratch) { |
| 1383 | Trunc_uw_s(fs, t8, scratch); |
| 1384 | mtc1(t8, fd); |
| 1385 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1386 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1387 | void MacroAssembler::Trunc_w_d(FPURegister fd, FPURegister fs) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1388 | if (IsMipsArchVariant(kLoongson) && fd.is(fs)) { |
| 1389 | Mfhc1(t8, fs); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1390 | trunc_w_d(fd, fs); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1391 | Mthc1(t8, fs); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1392 | } else { |
| 1393 | trunc_w_d(fd, fs); |
| 1394 | } |
| 1395 | } |
| 1396 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1397 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1398 | void MacroAssembler::Round_w_d(FPURegister fd, FPURegister fs) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1399 | if (IsMipsArchVariant(kLoongson) && fd.is(fs)) { |
| 1400 | Mfhc1(t8, fs); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1401 | round_w_d(fd, fs); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1402 | Mthc1(t8, fs); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1403 | } else { |
| 1404 | round_w_d(fd, fs); |
| 1405 | } |
| 1406 | } |
| 1407 | |
| 1408 | |
| 1409 | void MacroAssembler::Floor_w_d(FPURegister fd, FPURegister fs) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1410 | if (IsMipsArchVariant(kLoongson) && fd.is(fs)) { |
| 1411 | Mfhc1(t8, fs); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1412 | floor_w_d(fd, fs); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1413 | Mthc1(t8, fs); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1414 | } else { |
| 1415 | floor_w_d(fd, fs); |
| 1416 | } |
| 1417 | } |
| 1418 | |
| 1419 | |
| 1420 | void MacroAssembler::Ceil_w_d(FPURegister fd, FPURegister fs) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1421 | if (IsMipsArchVariant(kLoongson) && fd.is(fs)) { |
| 1422 | Mfhc1(t8, fs); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1423 | ceil_w_d(fd, fs); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1424 | Mthc1(t8, fs); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1425 | } else { |
| 1426 | ceil_w_d(fd, fs); |
| 1427 | } |
| 1428 | } |
| 1429 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1430 | |
Ben Murdoch | 69a99ed | 2011-11-30 16:03:39 +0000 | [diff] [blame] | 1431 | void MacroAssembler::Trunc_uw_d(FPURegister fd, |
| 1432 | Register rs, |
| 1433 | FPURegister scratch) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1434 | DCHECK(!fd.is(scratch)); |
| 1435 | DCHECK(!rs.is(at)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1436 | |
Ben Murdoch | 69a99ed | 2011-11-30 16:03:39 +0000 | [diff] [blame] | 1437 | // Load 2^31 into scratch as its float representation. |
| 1438 | li(at, 0x41E00000); |
Ben Murdoch | 69a99ed | 2011-11-30 16:03:39 +0000 | [diff] [blame] | 1439 | mtc1(zero_reg, scratch); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1440 | Mthc1(at, scratch); |
Ben Murdoch | 69a99ed | 2011-11-30 16:03:39 +0000 | [diff] [blame] | 1441 | // Test if scratch > fd. |
Ben Murdoch | 85b7179 | 2012-04-11 18:30:58 +0100 | [diff] [blame] | 1442 | // If fd < 2^31 we can convert it normally. |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1443 | Label simple_convert; |
| 1444 | BranchF(&simple_convert, NULL, lt, fd, scratch); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1445 | |
| 1446 | // First we subtract 2^31 from fd, then trunc it to rs |
| 1447 | // and add 2^31 to rs. |
Ben Murdoch | 69a99ed | 2011-11-30 16:03:39 +0000 | [diff] [blame] | 1448 | sub_d(scratch, fd, scratch); |
| 1449 | trunc_w_d(scratch, scratch); |
| 1450 | mfc1(rs, scratch); |
| 1451 | Or(rs, rs, 1 << 31); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1452 | |
| 1453 | Label done; |
| 1454 | Branch(&done); |
| 1455 | // Simple conversion. |
| 1456 | bind(&simple_convert); |
Ben Murdoch | 69a99ed | 2011-11-30 16:03:39 +0000 | [diff] [blame] | 1457 | trunc_w_d(scratch, fd); |
| 1458 | mfc1(rs, scratch); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1459 | |
| 1460 | bind(&done); |
| 1461 | } |
| 1462 | |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame^] | 1463 | void MacroAssembler::Trunc_uw_s(FPURegister fd, Register rs, |
| 1464 | FPURegister scratch) { |
| 1465 | DCHECK(!fd.is(scratch)); |
| 1466 | DCHECK(!rs.is(at)); |
| 1467 | |
| 1468 | // Load 2^31 into scratch as its float representation. |
| 1469 | li(at, 0x4F000000); |
| 1470 | mtc1(at, scratch); |
| 1471 | // Test if scratch > fd. |
| 1472 | // If fd < 2^31 we can convert it normally. |
| 1473 | Label simple_convert; |
| 1474 | BranchF32(&simple_convert, NULL, lt, fd, scratch); |
| 1475 | |
| 1476 | // First we subtract 2^31 from fd, then trunc it to rs |
| 1477 | // and add 2^31 to rs. |
| 1478 | sub_s(scratch, fd, scratch); |
| 1479 | trunc_w_s(scratch, scratch); |
| 1480 | mfc1(rs, scratch); |
| 1481 | Or(rs, rs, 1 << 31); |
| 1482 | |
| 1483 | Label done; |
| 1484 | Branch(&done); |
| 1485 | // Simple conversion. |
| 1486 | bind(&simple_convert); |
| 1487 | trunc_w_s(scratch, fd); |
| 1488 | mfc1(rs, scratch); |
| 1489 | |
| 1490 | bind(&done); |
| 1491 | } |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1492 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1493 | void MacroAssembler::Mthc1(Register rt, FPURegister fs) { |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame^] | 1494 | if (IsFp32Mode()) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1495 | mtc1(rt, fs.high()); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame^] | 1496 | } else { |
| 1497 | DCHECK(IsFp64Mode() || IsFpxxMode()); |
| 1498 | DCHECK(IsMipsArchVariant(kMips32r2) || IsMipsArchVariant(kMips32r6)); |
| 1499 | mthc1(rt, fs); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1500 | } |
| 1501 | } |
| 1502 | |
| 1503 | |
| 1504 | void MacroAssembler::Mfhc1(Register rt, FPURegister fs) { |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame^] | 1505 | if (IsFp32Mode()) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1506 | mfc1(rt, fs.high()); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame^] | 1507 | } else { |
| 1508 | DCHECK(IsFp64Mode() || IsFpxxMode()); |
| 1509 | DCHECK(IsMipsArchVariant(kMips32r2) || IsMipsArchVariant(kMips32r6)); |
| 1510 | mfhc1(rt, fs); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1511 | } |
| 1512 | } |
| 1513 | |
| 1514 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1515 | void MacroAssembler::BranchFCommon(SecondaryField sizeField, Label* target, |
| 1516 | Label* nan, Condition cond, FPURegister cmp1, |
| 1517 | FPURegister cmp2, BranchDelaySlot bd) { |
| 1518 | { |
| 1519 | BlockTrampolinePoolScope block_trampoline_pool(this); |
| 1520 | if (cond == al) { |
| 1521 | Branch(bd, target); |
| 1522 | return; |
| 1523 | } |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1524 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1525 | if (IsMipsArchVariant(kMips32r6)) { |
| 1526 | sizeField = sizeField == D ? L : W; |
| 1527 | } |
| 1528 | DCHECK(nan || target); |
| 1529 | // Check for unordered (NaN) cases. |
| 1530 | if (nan) { |
| 1531 | bool long_branch = |
| 1532 | nan->is_bound() ? is_near(nan) : is_trampoline_emitted(); |
| 1533 | if (!IsMipsArchVariant(kMips32r6)) { |
| 1534 | if (long_branch) { |
| 1535 | Label skip; |
| 1536 | c(UN, sizeField, cmp1, cmp2); |
| 1537 | bc1f(&skip); |
| 1538 | nop(); |
| 1539 | BranchLong(nan, bd); |
| 1540 | bind(&skip); |
| 1541 | } else { |
| 1542 | c(UN, sizeField, cmp1, cmp2); |
| 1543 | bc1t(nan); |
| 1544 | if (bd == PROTECT) { |
| 1545 | nop(); |
| 1546 | } |
| 1547 | } |
| 1548 | } else { |
| 1549 | // Use kDoubleCompareReg for comparison result. It has to be unavailable |
| 1550 | // to lithium register allocator. |
| 1551 | DCHECK(!cmp1.is(kDoubleCompareReg) && !cmp2.is(kDoubleCompareReg)); |
| 1552 | if (long_branch) { |
| 1553 | Label skip; |
| 1554 | cmp(UN, sizeField, kDoubleCompareReg, cmp1, cmp2); |
| 1555 | bc1eqz(&skip, kDoubleCompareReg); |
| 1556 | nop(); |
| 1557 | BranchLong(nan, bd); |
| 1558 | bind(&skip); |
| 1559 | } else { |
| 1560 | cmp(UN, sizeField, kDoubleCompareReg, cmp1, cmp2); |
| 1561 | bc1nez(nan, kDoubleCompareReg); |
| 1562 | if (bd == PROTECT) { |
| 1563 | nop(); |
| 1564 | } |
| 1565 | } |
| 1566 | } |
| 1567 | } |
| 1568 | |
| 1569 | if (target) { |
| 1570 | bool long_branch = |
| 1571 | target->is_bound() ? is_near(target) : is_trampoline_emitted(); |
| 1572 | if (long_branch) { |
| 1573 | Label skip; |
| 1574 | Condition neg_cond = NegateFpuCondition(cond); |
| 1575 | BranchShortF(sizeField, &skip, neg_cond, cmp1, cmp2, bd); |
| 1576 | BranchLong(target, bd); |
| 1577 | bind(&skip); |
| 1578 | } else { |
| 1579 | BranchShortF(sizeField, target, cond, cmp1, cmp2, bd); |
| 1580 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1581 | } |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1582 | } |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1583 | } |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1584 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1585 | void MacroAssembler::BranchShortF(SecondaryField sizeField, Label* target, |
| 1586 | Condition cc, FPURegister cmp1, |
| 1587 | FPURegister cmp2, BranchDelaySlot bd) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1588 | if (!IsMipsArchVariant(kMips32r6)) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1589 | BlockTrampolinePoolScope block_trampoline_pool(this); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1590 | if (target) { |
| 1591 | // Here NaN cases were either handled by this function or are assumed to |
| 1592 | // have been handled by the caller. |
| 1593 | switch (cc) { |
| 1594 | case lt: |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1595 | c(OLT, sizeField, cmp1, cmp2); |
| 1596 | bc1t(target); |
| 1597 | break; |
| 1598 | case ult: |
| 1599 | c(ULT, sizeField, cmp1, cmp2); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1600 | bc1t(target); |
| 1601 | break; |
| 1602 | case gt: |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1603 | c(ULE, sizeField, cmp1, cmp2); |
| 1604 | bc1f(target); |
| 1605 | break; |
| 1606 | case ugt: |
| 1607 | c(OLE, sizeField, cmp1, cmp2); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1608 | bc1f(target); |
| 1609 | break; |
| 1610 | case ge: |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1611 | c(ULT, sizeField, cmp1, cmp2); |
| 1612 | bc1f(target); |
| 1613 | break; |
| 1614 | case uge: |
| 1615 | c(OLT, sizeField, cmp1, cmp2); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1616 | bc1f(target); |
| 1617 | break; |
| 1618 | case le: |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1619 | c(OLE, sizeField, cmp1, cmp2); |
| 1620 | bc1t(target); |
| 1621 | break; |
| 1622 | case ule: |
| 1623 | c(ULE, sizeField, cmp1, cmp2); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1624 | bc1t(target); |
| 1625 | break; |
| 1626 | case eq: |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1627 | c(EQ, sizeField, cmp1, cmp2); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1628 | bc1t(target); |
| 1629 | break; |
| 1630 | case ueq: |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1631 | c(UEQ, sizeField, cmp1, cmp2); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1632 | bc1t(target); |
| 1633 | break; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1634 | case ne: // Unordered or not equal. |
| 1635 | c(EQ, sizeField, cmp1, cmp2); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1636 | bc1f(target); |
| 1637 | break; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1638 | case ogl: |
| 1639 | c(UEQ, sizeField, cmp1, cmp2); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1640 | bc1f(target); |
| 1641 | break; |
| 1642 | default: |
| 1643 | CHECK(0); |
| 1644 | } |
| 1645 | } |
| 1646 | } else { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1647 | BlockTrampolinePoolScope block_trampoline_pool(this); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1648 | if (target) { |
| 1649 | // Here NaN cases were either handled by this function or are assumed to |
| 1650 | // have been handled by the caller. |
| 1651 | // Unsigned conditions are treated as their signed counterpart. |
| 1652 | // Use kDoubleCompareReg for comparison result, it is |
| 1653 | // valid in fp64 (FR = 1) mode which is implied for mips32r6. |
| 1654 | DCHECK(!cmp1.is(kDoubleCompareReg) && !cmp2.is(kDoubleCompareReg)); |
| 1655 | switch (cc) { |
| 1656 | case lt: |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1657 | cmp(OLT, sizeField, kDoubleCompareReg, cmp1, cmp2); |
| 1658 | bc1nez(target, kDoubleCompareReg); |
| 1659 | break; |
| 1660 | case ult: |
| 1661 | cmp(ULT, sizeField, kDoubleCompareReg, cmp1, cmp2); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1662 | bc1nez(target, kDoubleCompareReg); |
| 1663 | break; |
| 1664 | case gt: |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1665 | cmp(ULE, sizeField, kDoubleCompareReg, cmp1, cmp2); |
| 1666 | bc1eqz(target, kDoubleCompareReg); |
| 1667 | break; |
| 1668 | case ugt: |
| 1669 | cmp(OLE, sizeField, kDoubleCompareReg, cmp1, cmp2); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1670 | bc1eqz(target, kDoubleCompareReg); |
| 1671 | break; |
| 1672 | case ge: |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1673 | cmp(ULT, sizeField, kDoubleCompareReg, cmp1, cmp2); |
| 1674 | bc1eqz(target, kDoubleCompareReg); |
| 1675 | break; |
| 1676 | case uge: |
| 1677 | cmp(OLT, sizeField, kDoubleCompareReg, cmp1, cmp2); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1678 | bc1eqz(target, kDoubleCompareReg); |
| 1679 | break; |
| 1680 | case le: |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1681 | cmp(OLE, sizeField, kDoubleCompareReg, cmp1, cmp2); |
| 1682 | bc1nez(target, kDoubleCompareReg); |
| 1683 | break; |
| 1684 | case ule: |
| 1685 | cmp(ULE, sizeField, kDoubleCompareReg, cmp1, cmp2); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1686 | bc1nez(target, kDoubleCompareReg); |
| 1687 | break; |
| 1688 | case eq: |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1689 | cmp(EQ, sizeField, kDoubleCompareReg, cmp1, cmp2); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1690 | bc1nez(target, kDoubleCompareReg); |
| 1691 | break; |
| 1692 | case ueq: |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1693 | cmp(UEQ, sizeField, kDoubleCompareReg, cmp1, cmp2); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1694 | bc1nez(target, kDoubleCompareReg); |
| 1695 | break; |
| 1696 | case ne: |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1697 | cmp(EQ, sizeField, kDoubleCompareReg, cmp1, cmp2); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1698 | bc1eqz(target, kDoubleCompareReg); |
| 1699 | break; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1700 | case ogl: |
| 1701 | cmp(UEQ, sizeField, kDoubleCompareReg, cmp1, cmp2); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1702 | bc1eqz(target, kDoubleCompareReg); |
| 1703 | break; |
| 1704 | default: |
| 1705 | CHECK(0); |
| 1706 | } |
| 1707 | } |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1708 | } |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1709 | if (bd == PROTECT) { |
| 1710 | nop(); |
| 1711 | } |
| 1712 | } |
| 1713 | |
| 1714 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1715 | void MacroAssembler::FmoveLow(FPURegister dst, Register src_low) { |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame^] | 1716 | if (IsFp32Mode()) { |
| 1717 | mtc1(src_low, dst); |
| 1718 | } else { |
| 1719 | DCHECK(IsFp64Mode() || IsFpxxMode()); |
| 1720 | DCHECK(IsMipsArchVariant(kMips32r2) || IsMipsArchVariant(kMips32r6)); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1721 | DCHECK(!src_low.is(at)); |
| 1722 | mfhc1(at, dst); |
| 1723 | mtc1(src_low, dst); |
| 1724 | mthc1(at, dst); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1725 | } |
| 1726 | } |
| 1727 | |
| 1728 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 1729 | void MacroAssembler::Move(FPURegister dst, float imm) { |
| 1730 | li(at, Operand(bit_cast<int32_t>(imm))); |
| 1731 | mtc1(at, dst); |
| 1732 | } |
| 1733 | |
| 1734 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1735 | void MacroAssembler::Move(FPURegister dst, double imm) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1736 | static const DoubleRepresentation minus_zero(-0.0); |
| 1737 | static const DoubleRepresentation zero(0.0); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1738 | DoubleRepresentation value_rep(imm); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1739 | // Handle special values first. |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 1740 | if (value_rep == zero && has_double_zero_reg_set_) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1741 | mov_d(dst, kDoubleRegZero); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 1742 | } else if (value_rep == minus_zero && has_double_zero_reg_set_) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1743 | neg_d(dst, kDoubleRegZero); |
| 1744 | } else { |
| 1745 | uint32_t lo, hi; |
| 1746 | DoubleAsTwoUInt32(imm, &lo, &hi); |
| 1747 | // Move the low part of the double into the lower of the corresponding FPU |
| 1748 | // register of FPU register pair. |
| 1749 | if (lo != 0) { |
| 1750 | li(at, Operand(lo)); |
| 1751 | mtc1(at, dst); |
| 1752 | } else { |
| 1753 | mtc1(zero_reg, dst); |
| 1754 | } |
| 1755 | // Move the high part of the double into the higher of the corresponding FPU |
| 1756 | // register of FPU register pair. |
| 1757 | if (hi != 0) { |
| 1758 | li(at, Operand(hi)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1759 | Mthc1(at, dst); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1760 | } else { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1761 | Mthc1(zero_reg, dst); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1762 | } |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 1763 | if (dst.is(kDoubleRegZero)) has_double_zero_reg_set_ = true; |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1764 | } |
| 1765 | } |
| 1766 | |
| 1767 | |
| 1768 | void MacroAssembler::Movz(Register rd, Register rs, Register rt) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1769 | if (IsMipsArchVariant(kLoongson) || IsMipsArchVariant(kMips32r6)) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1770 | Label done; |
| 1771 | Branch(&done, ne, rt, Operand(zero_reg)); |
| 1772 | mov(rd, rs); |
| 1773 | bind(&done); |
| 1774 | } else { |
| 1775 | movz(rd, rs, rt); |
| 1776 | } |
| 1777 | } |
| 1778 | |
| 1779 | |
| 1780 | void MacroAssembler::Movn(Register rd, Register rs, Register rt) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1781 | if (IsMipsArchVariant(kLoongson) || IsMipsArchVariant(kMips32r6)) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1782 | Label done; |
| 1783 | Branch(&done, eq, rt, Operand(zero_reg)); |
| 1784 | mov(rd, rs); |
| 1785 | bind(&done); |
| 1786 | } else { |
| 1787 | movn(rd, rs, rt); |
| 1788 | } |
| 1789 | } |
| 1790 | |
| 1791 | |
| 1792 | void MacroAssembler::Movt(Register rd, Register rs, uint16_t cc) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1793 | if (IsMipsArchVariant(kLoongson)) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1794 | // Tests an FP condition code and then conditionally move rs to rd. |
| 1795 | // 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] | 1796 | DCHECK(cc == 0); |
| 1797 | DCHECK(!(rs.is(t8) || rd.is(t8))); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1798 | Label done; |
| 1799 | Register scratch = t8; |
| 1800 | // For testing purposes we need to fetch content of the FCSR register and |
| 1801 | // than test its cc (floating point condition code) bit (for cc = 0, it is |
| 1802 | // 24. bit of the FCSR). |
| 1803 | cfc1(scratch, FCSR); |
| 1804 | // For the MIPS I, II and III architectures, the contents of scratch is |
| 1805 | // UNPREDICTABLE for the instruction immediately following CFC1. |
| 1806 | nop(); |
| 1807 | srl(scratch, scratch, 16); |
| 1808 | andi(scratch, scratch, 0x0080); |
| 1809 | Branch(&done, eq, scratch, Operand(zero_reg)); |
| 1810 | mov(rd, rs); |
| 1811 | bind(&done); |
| 1812 | } else { |
| 1813 | movt(rd, rs, cc); |
| 1814 | } |
| 1815 | } |
| 1816 | |
| 1817 | |
| 1818 | void MacroAssembler::Movf(Register rd, Register rs, uint16_t cc) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1819 | if (IsMipsArchVariant(kLoongson)) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1820 | // Tests an FP condition code and then conditionally move rs to rd. |
| 1821 | // 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] | 1822 | DCHECK(cc == 0); |
| 1823 | DCHECK(!(rs.is(t8) || rd.is(t8))); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1824 | Label done; |
| 1825 | Register scratch = t8; |
| 1826 | // For testing purposes we need to fetch content of the FCSR register and |
| 1827 | // than test its cc (floating point condition code) bit (for cc = 0, it is |
| 1828 | // 24. bit of the FCSR). |
| 1829 | cfc1(scratch, FCSR); |
| 1830 | // For the MIPS I, II and III architectures, the contents of scratch is |
| 1831 | // UNPREDICTABLE for the instruction immediately following CFC1. |
| 1832 | nop(); |
| 1833 | srl(scratch, scratch, 16); |
| 1834 | andi(scratch, scratch, 0x0080); |
| 1835 | Branch(&done, ne, scratch, Operand(zero_reg)); |
| 1836 | mov(rd, rs); |
| 1837 | bind(&done); |
| 1838 | } else { |
| 1839 | movf(rd, rs, cc); |
| 1840 | } |
| 1841 | } |
| 1842 | |
| 1843 | |
| 1844 | void MacroAssembler::Clz(Register rd, Register rs) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1845 | if (IsMipsArchVariant(kLoongson)) { |
| 1846 | 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] | 1847 | Register mask = t8; |
| 1848 | Register scratch = t9; |
| 1849 | Label loop, end; |
| 1850 | mov(at, rs); |
| 1851 | mov(rd, zero_reg); |
| 1852 | lui(mask, 0x8000); |
| 1853 | bind(&loop); |
| 1854 | and_(scratch, at, mask); |
| 1855 | Branch(&end, ne, scratch, Operand(zero_reg)); |
| 1856 | addiu(rd, rd, 1); |
| 1857 | Branch(&loop, ne, mask, Operand(zero_reg), USE_DELAY_SLOT); |
| 1858 | srl(mask, mask, 1); |
| 1859 | bind(&end); |
| 1860 | } else { |
| 1861 | clz(rd, rs); |
| 1862 | } |
| 1863 | } |
| 1864 | |
| 1865 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1866 | void MacroAssembler::EmitFPUTruncate(FPURoundingMode rounding_mode, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1867 | Register result, |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1868 | DoubleRegister double_input, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1869 | Register scratch, |
| 1870 | DoubleRegister double_scratch, |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1871 | Register except_flag, |
| 1872 | CheckForInexactConversion check_inexact) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1873 | DCHECK(!result.is(scratch)); |
| 1874 | DCHECK(!double_input.is(double_scratch)); |
| 1875 | DCHECK(!except_flag.is(scratch)); |
| 1876 | |
| 1877 | Label done; |
| 1878 | |
| 1879 | // Clear the except flag (0 = no exception) |
| 1880 | mov(except_flag, zero_reg); |
| 1881 | |
| 1882 | // Test for values that can be exactly represented as a signed 32-bit integer. |
| 1883 | cvt_w_d(double_scratch, double_input); |
| 1884 | mfc1(result, double_scratch); |
| 1885 | cvt_d_w(double_scratch, double_scratch); |
| 1886 | BranchF(&done, NULL, eq, double_input, double_scratch); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1887 | |
| 1888 | int32_t except_mask = kFCSRFlagMask; // Assume interested in all exceptions. |
| 1889 | |
| 1890 | if (check_inexact == kDontCheckForInexactConversion) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1891 | // Ignore inexact exceptions. |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1892 | except_mask &= ~kFCSRInexactFlagMask; |
| 1893 | } |
| 1894 | |
| 1895 | // Save FCSR. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1896 | cfc1(scratch, FCSR); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1897 | // Disable FPU exceptions. |
| 1898 | ctc1(zero_reg, FCSR); |
| 1899 | |
| 1900 | // Do operation based on rounding mode. |
| 1901 | switch (rounding_mode) { |
| 1902 | case kRoundToNearest: |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1903 | Round_w_d(double_scratch, double_input); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1904 | break; |
| 1905 | case kRoundToZero: |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1906 | Trunc_w_d(double_scratch, double_input); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1907 | break; |
| 1908 | case kRoundToPlusInf: |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1909 | Ceil_w_d(double_scratch, double_input); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1910 | break; |
| 1911 | case kRoundToMinusInf: |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1912 | Floor_w_d(double_scratch, double_input); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1913 | break; |
| 1914 | } // End of switch-statement. |
| 1915 | |
| 1916 | // Retrieve FCSR. |
| 1917 | cfc1(except_flag, FCSR); |
| 1918 | // Restore FCSR. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1919 | ctc1(scratch, FCSR); |
| 1920 | // Move the converted value into the result register. |
| 1921 | mfc1(result, double_scratch); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1922 | |
| 1923 | // Check for fpu exceptions. |
| 1924 | And(except_flag, except_flag, Operand(except_mask)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1925 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1926 | bind(&done); |
| 1927 | } |
| 1928 | |
| 1929 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1930 | void MacroAssembler::TryInlineTruncateDoubleToI(Register result, |
| 1931 | DoubleRegister double_input, |
| 1932 | Label* done) { |
| 1933 | DoubleRegister single_scratch = kLithiumScratchDouble.low(); |
| 1934 | Register scratch = at; |
| 1935 | Register scratch2 = t9; |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 1936 | |
| 1937 | // Clear cumulative exception flags and save the FCSR. |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 1938 | cfc1(scratch2, FCSR); |
| 1939 | ctc1(zero_reg, FCSR); |
| 1940 | // Try a conversion to a signed integer. |
| 1941 | trunc_w_d(single_scratch, double_input); |
| 1942 | mfc1(result, single_scratch); |
| 1943 | // Retrieve and restore the FCSR. |
| 1944 | cfc1(scratch, FCSR); |
| 1945 | ctc1(scratch2, FCSR); |
| 1946 | // Check for overflow and NaNs. |
| 1947 | And(scratch, |
| 1948 | scratch, |
| 1949 | kFCSROverflowFlagMask | kFCSRUnderflowFlagMask | kFCSRInvalidOpFlagMask); |
| 1950 | // If we had no exceptions we are done. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1951 | Branch(done, eq, scratch, Operand(zero_reg)); |
| 1952 | } |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 1953 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1954 | |
| 1955 | void MacroAssembler::TruncateDoubleToI(Register result, |
| 1956 | DoubleRegister double_input) { |
| 1957 | Label done; |
| 1958 | |
| 1959 | TryInlineTruncateDoubleToI(result, double_input, &done); |
| 1960 | |
| 1961 | // If we fell through then inline version didn't succeed - call stub instead. |
| 1962 | push(ra); |
| 1963 | Subu(sp, sp, Operand(kDoubleSize)); // Put input on stack. |
| 1964 | sdc1(double_input, MemOperand(sp, 0)); |
| 1965 | |
| 1966 | DoubleToIStub stub(isolate(), sp, result, 0, true, true); |
| 1967 | CallStub(&stub); |
| 1968 | |
| 1969 | Addu(sp, sp, Operand(kDoubleSize)); |
| 1970 | pop(ra); |
| 1971 | |
| 1972 | bind(&done); |
| 1973 | } |
| 1974 | |
| 1975 | |
| 1976 | void MacroAssembler::TruncateHeapNumberToI(Register result, Register object) { |
| 1977 | Label done; |
| 1978 | DoubleRegister double_scratch = f12; |
| 1979 | DCHECK(!result.is(object)); |
| 1980 | |
| 1981 | ldc1(double_scratch, |
| 1982 | MemOperand(object, HeapNumber::kValueOffset - kHeapObjectTag)); |
| 1983 | TryInlineTruncateDoubleToI(result, double_scratch, &done); |
| 1984 | |
| 1985 | // If we fell through then inline version didn't succeed - call stub instead. |
| 1986 | push(ra); |
| 1987 | DoubleToIStub stub(isolate(), |
| 1988 | object, |
| 1989 | result, |
| 1990 | HeapNumber::kValueOffset - kHeapObjectTag, |
| 1991 | true, |
| 1992 | true); |
| 1993 | CallStub(&stub); |
| 1994 | pop(ra); |
| 1995 | |
| 1996 | bind(&done); |
| 1997 | } |
| 1998 | |
| 1999 | |
| 2000 | void MacroAssembler::TruncateNumberToI(Register object, |
| 2001 | Register result, |
| 2002 | Register heap_number_map, |
| 2003 | Register scratch, |
| 2004 | Label* not_number) { |
| 2005 | Label done; |
| 2006 | DCHECK(!result.is(object)); |
| 2007 | |
| 2008 | UntagAndJumpIfSmi(result, object, &done); |
| 2009 | JumpIfNotHeapNumber(object, heap_number_map, scratch, not_number); |
| 2010 | TruncateHeapNumberToI(result, object); |
| 2011 | |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 2012 | bind(&done); |
| 2013 | } |
| 2014 | |
| 2015 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2016 | void MacroAssembler::GetLeastBitsFromSmi(Register dst, |
| 2017 | Register src, |
| 2018 | int num_least_bits) { |
| 2019 | Ext(dst, src, kSmiTagSize, num_least_bits); |
| 2020 | } |
| 2021 | |
| 2022 | |
| 2023 | void MacroAssembler::GetLeastBitsFromInt32(Register dst, |
| 2024 | Register src, |
| 2025 | int num_least_bits) { |
| 2026 | And(dst, src, Operand((1 << num_least_bits) - 1)); |
| 2027 | } |
| 2028 | |
| 2029 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2030 | // Emulated condtional branches do not emit a nop in the branch delay slot. |
| 2031 | // |
| 2032 | // BRANCH_ARGS_CHECK checks that conditional jump arguments are correct. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2033 | #define BRANCH_ARGS_CHECK(cond, rs, rt) DCHECK( \ |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2034 | (cond == cc_always && rs.is(zero_reg) && rt.rm().is(zero_reg)) || \ |
| 2035 | (cond != cc_always && (!rs.is(zero_reg) || !rt.rm().is(zero_reg)))) |
| 2036 | |
| 2037 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2038 | void MacroAssembler::Branch(int32_t offset, BranchDelaySlot bdslot) { |
| 2039 | DCHECK(IsMipsArchVariant(kMips32r6) ? is_int26(offset) : is_int16(offset)); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 2040 | BranchShort(offset, bdslot); |
| 2041 | } |
| 2042 | |
| 2043 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2044 | void MacroAssembler::Branch(int32_t offset, Condition cond, Register rs, |
| 2045 | const Operand& rt, BranchDelaySlot bdslot) { |
| 2046 | bool is_near = BranchShortCheck(offset, nullptr, cond, rs, rt, bdslot); |
| 2047 | DCHECK(is_near); |
| 2048 | USE(is_near); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 2049 | } |
| 2050 | |
| 2051 | |
| 2052 | void MacroAssembler::Branch(Label* L, BranchDelaySlot bdslot) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2053 | if (L->is_bound()) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2054 | if (is_near_branch(L)) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2055 | BranchShort(L, bdslot); |
| 2056 | } else { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2057 | BranchLong(L, bdslot); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2058 | } |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 2059 | } else { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2060 | if (is_trampoline_emitted()) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2061 | BranchLong(L, bdslot); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2062 | } else { |
| 2063 | BranchShort(L, bdslot); |
| 2064 | } |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 2065 | } |
| 2066 | } |
| 2067 | |
| 2068 | |
| 2069 | void MacroAssembler::Branch(Label* L, Condition cond, Register rs, |
| 2070 | const Operand& rt, |
| 2071 | BranchDelaySlot bdslot) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2072 | if (L->is_bound()) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2073 | if (!BranchShortCheck(0, L, cond, rs, rt, bdslot)) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2074 | if (cond != cc_always) { |
| 2075 | Label skip; |
| 2076 | Condition neg_cond = NegateCondition(cond); |
| 2077 | BranchShort(&skip, neg_cond, rs, rt); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2078 | BranchLong(L, bdslot); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2079 | bind(&skip); |
| 2080 | } else { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2081 | BranchLong(L, bdslot); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2082 | } |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2083 | } |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 2084 | } else { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2085 | if (is_trampoline_emitted()) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2086 | if (cond != cc_always) { |
| 2087 | Label skip; |
| 2088 | Condition neg_cond = NegateCondition(cond); |
| 2089 | BranchShort(&skip, neg_cond, rs, rt); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2090 | BranchLong(L, bdslot); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2091 | bind(&skip); |
| 2092 | } else { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2093 | BranchLong(L, bdslot); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2094 | } |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2095 | } else { |
| 2096 | BranchShort(L, cond, rs, rt, bdslot); |
| 2097 | } |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 2098 | } |
| 2099 | } |
| 2100 | |
| 2101 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2102 | void MacroAssembler::Branch(Label* L, |
| 2103 | Condition cond, |
| 2104 | Register rs, |
| 2105 | Heap::RootListIndex index, |
| 2106 | BranchDelaySlot bdslot) { |
| 2107 | LoadRoot(at, index); |
| 2108 | Branch(L, cond, rs, Operand(at), bdslot); |
| 2109 | } |
| 2110 | |
| 2111 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2112 | void MacroAssembler::BranchShortHelper(int16_t offset, Label* L, |
| 2113 | BranchDelaySlot bdslot) { |
| 2114 | DCHECK(L == nullptr || offset == 0); |
| 2115 | offset = GetOffset(offset, L, OffsetSize::kOffset16); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2116 | b(offset); |
| 2117 | |
| 2118 | // Emit a nop in the branch delay slot if required. |
| 2119 | if (bdslot == PROTECT) |
| 2120 | nop(); |
| 2121 | } |
| 2122 | |
| 2123 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2124 | void MacroAssembler::BranchShortHelperR6(int32_t offset, Label* L) { |
| 2125 | DCHECK(L == nullptr || offset == 0); |
| 2126 | offset = GetOffset(offset, L, OffsetSize::kOffset26); |
| 2127 | bc(offset); |
| 2128 | } |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2129 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2130 | |
| 2131 | void MacroAssembler::BranchShort(int32_t offset, BranchDelaySlot bdslot) { |
| 2132 | if (IsMipsArchVariant(kMips32r6) && bdslot == PROTECT) { |
| 2133 | DCHECK(is_int26(offset)); |
| 2134 | BranchShortHelperR6(offset, nullptr); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2135 | } else { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2136 | DCHECK(is_int16(offset)); |
| 2137 | BranchShortHelper(offset, nullptr, bdslot); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 2138 | } |
| 2139 | } |
| 2140 | |
| 2141 | |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 2142 | void MacroAssembler::BranchShort(Label* L, BranchDelaySlot bdslot) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2143 | if (IsMipsArchVariant(kMips32r6) && bdslot == PROTECT) { |
| 2144 | BranchShortHelperR6(0, L); |
| 2145 | } else { |
| 2146 | BranchShortHelper(0, L, bdslot); |
| 2147 | } |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 2148 | } |
| 2149 | |
| 2150 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2151 | static inline bool IsZero(const Operand& rt) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2152 | if (rt.is_reg()) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2153 | return rt.rm().is(zero_reg); |
| 2154 | } else { |
| 2155 | return rt.immediate() == 0; |
| 2156 | } |
| 2157 | } |
| 2158 | |
| 2159 | |
| 2160 | int32_t MacroAssembler::GetOffset(int32_t offset, Label* L, OffsetSize bits) { |
| 2161 | if (L) { |
| 2162 | offset = branch_offset_helper(L, bits) >> 2; |
| 2163 | } else { |
| 2164 | DCHECK(is_intn(offset, bits)); |
| 2165 | } |
| 2166 | return offset; |
| 2167 | } |
| 2168 | |
| 2169 | |
| 2170 | Register MacroAssembler::GetRtAsRegisterHelper(const Operand& rt, |
| 2171 | Register scratch) { |
| 2172 | Register r2 = no_reg; |
| 2173 | if (rt.is_reg()) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2174 | r2 = rt.rm_; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2175 | } else { |
| 2176 | r2 = scratch; |
| 2177 | li(r2, rt); |
| 2178 | } |
| 2179 | |
| 2180 | return r2; |
| 2181 | } |
| 2182 | |
| 2183 | |
| 2184 | bool MacroAssembler::BranchShortHelperR6(int32_t offset, Label* L, |
| 2185 | Condition cond, Register rs, |
| 2186 | const Operand& rt) { |
| 2187 | DCHECK(L == nullptr || offset == 0); |
| 2188 | Register scratch = rs.is(at) ? t8 : at; |
| 2189 | OffsetSize bits = OffsetSize::kOffset16; |
| 2190 | |
| 2191 | // Be careful to always use shifted_branch_offset only just before the |
| 2192 | // branch instruction, as the location will be remember for patching the |
| 2193 | // target. |
| 2194 | { |
| 2195 | BlockTrampolinePoolScope block_trampoline_pool(this); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2196 | switch (cond) { |
| 2197 | case cc_always: |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2198 | bits = OffsetSize::kOffset26; |
| 2199 | if (!is_near(L, bits)) return false; |
| 2200 | offset = GetOffset(offset, L, bits); |
| 2201 | bc(offset); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2202 | break; |
| 2203 | case eq: |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2204 | if (rs.code() == rt.rm_.reg_code) { |
| 2205 | // Pre R6 beq is used here to make the code patchable. Otherwise bc |
| 2206 | // should be used which has no condition field so is not patchable. |
| 2207 | bits = OffsetSize::kOffset16; |
| 2208 | if (!is_near(L, bits)) return false; |
| 2209 | scratch = GetRtAsRegisterHelper(rt, scratch); |
| 2210 | offset = GetOffset(offset, L, bits); |
| 2211 | beq(rs, scratch, offset); |
| 2212 | nop(); |
| 2213 | } else if (IsZero(rt)) { |
| 2214 | bits = OffsetSize::kOffset21; |
| 2215 | if (!is_near(L, bits)) return false; |
| 2216 | offset = GetOffset(offset, L, bits); |
| 2217 | beqzc(rs, offset); |
| 2218 | } else { |
| 2219 | // We don't want any other register but scratch clobbered. |
| 2220 | bits = OffsetSize::kOffset16; |
| 2221 | if (!is_near(L, bits)) return false; |
| 2222 | scratch = GetRtAsRegisterHelper(rt, scratch); |
| 2223 | offset = GetOffset(offset, L, bits); |
| 2224 | beqc(rs, scratch, offset); |
| 2225 | } |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2226 | break; |
| 2227 | case ne: |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2228 | if (rs.code() == rt.rm_.reg_code) { |
| 2229 | // Pre R6 bne is used here to make the code patchable. Otherwise we |
| 2230 | // should not generate any instruction. |
| 2231 | bits = OffsetSize::kOffset16; |
| 2232 | if (!is_near(L, bits)) return false; |
| 2233 | scratch = GetRtAsRegisterHelper(rt, scratch); |
| 2234 | offset = GetOffset(offset, L, bits); |
| 2235 | bne(rs, scratch, offset); |
| 2236 | nop(); |
| 2237 | } else if (IsZero(rt)) { |
| 2238 | bits = OffsetSize::kOffset21; |
| 2239 | if (!is_near(L, bits)) return false; |
| 2240 | offset = GetOffset(offset, L, bits); |
| 2241 | bnezc(rs, offset); |
| 2242 | } else { |
| 2243 | // We don't want any other register but scratch clobbered. |
| 2244 | bits = OffsetSize::kOffset16; |
| 2245 | if (!is_near(L, bits)) return false; |
| 2246 | scratch = GetRtAsRegisterHelper(rt, scratch); |
| 2247 | offset = GetOffset(offset, L, bits); |
| 2248 | bnec(rs, scratch, offset); |
| 2249 | } |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2250 | break; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2251 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2252 | // Signed comparison. |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2253 | case greater: |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2254 | // rs > rt |
| 2255 | if (rs.code() == rt.rm_.reg_code) { |
| 2256 | break; // No code needs to be emitted. |
| 2257 | } else if (rs.is(zero_reg)) { |
| 2258 | bits = OffsetSize::kOffset16; |
| 2259 | if (!is_near(L, bits)) return false; |
| 2260 | scratch = GetRtAsRegisterHelper(rt, scratch); |
| 2261 | offset = GetOffset(offset, L, bits); |
| 2262 | bltzc(scratch, offset); |
| 2263 | } else if (IsZero(rt)) { |
| 2264 | bits = OffsetSize::kOffset16; |
| 2265 | if (!is_near(L, bits)) return false; |
| 2266 | offset = GetOffset(offset, L, bits); |
| 2267 | bgtzc(rs, offset); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2268 | } else { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2269 | bits = OffsetSize::kOffset16; |
| 2270 | if (!is_near(L, bits)) return false; |
| 2271 | scratch = GetRtAsRegisterHelper(rt, scratch); |
| 2272 | DCHECK(!rs.is(scratch)); |
| 2273 | offset = GetOffset(offset, L, bits); |
| 2274 | bltc(scratch, rs, offset); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2275 | } |
| 2276 | break; |
| 2277 | case greater_equal: |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2278 | // rs >= rt |
| 2279 | if (rs.code() == rt.rm_.reg_code) { |
| 2280 | bits = OffsetSize::kOffset26; |
| 2281 | if (!is_near(L, bits)) return false; |
| 2282 | offset = GetOffset(offset, L, bits); |
| 2283 | bc(offset); |
| 2284 | } else if (rs.is(zero_reg)) { |
| 2285 | bits = OffsetSize::kOffset16; |
| 2286 | if (!is_near(L, bits)) return false; |
| 2287 | scratch = GetRtAsRegisterHelper(rt, scratch); |
| 2288 | offset = GetOffset(offset, L, bits); |
| 2289 | blezc(scratch, offset); |
| 2290 | } else if (IsZero(rt)) { |
| 2291 | bits = OffsetSize::kOffset16; |
| 2292 | if (!is_near(L, bits)) return false; |
| 2293 | offset = GetOffset(offset, L, bits); |
| 2294 | bgezc(rs, offset); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2295 | } else { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2296 | bits = OffsetSize::kOffset16; |
| 2297 | if (!is_near(L, bits)) return false; |
| 2298 | scratch = GetRtAsRegisterHelper(rt, scratch); |
| 2299 | DCHECK(!rs.is(scratch)); |
| 2300 | offset = GetOffset(offset, L, bits); |
| 2301 | bgec(rs, scratch, offset); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2302 | } |
| 2303 | break; |
| 2304 | case less: |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2305 | // rs < rt |
| 2306 | if (rs.code() == rt.rm_.reg_code) { |
| 2307 | break; // No code needs to be emitted. |
| 2308 | } else if (rs.is(zero_reg)) { |
| 2309 | bits = OffsetSize::kOffset16; |
| 2310 | if (!is_near(L, bits)) return false; |
| 2311 | scratch = GetRtAsRegisterHelper(rt, scratch); |
| 2312 | offset = GetOffset(offset, L, bits); |
| 2313 | bgtzc(scratch, offset); |
| 2314 | } else if (IsZero(rt)) { |
| 2315 | bits = OffsetSize::kOffset16; |
| 2316 | if (!is_near(L, bits)) return false; |
| 2317 | offset = GetOffset(offset, L, bits); |
| 2318 | bltzc(rs, offset); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2319 | } else { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2320 | bits = OffsetSize::kOffset16; |
| 2321 | if (!is_near(L, bits)) return false; |
| 2322 | scratch = GetRtAsRegisterHelper(rt, scratch); |
| 2323 | DCHECK(!rs.is(scratch)); |
| 2324 | offset = GetOffset(offset, L, bits); |
| 2325 | bltc(rs, scratch, offset); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2326 | } |
| 2327 | break; |
| 2328 | case less_equal: |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2329 | // rs <= rt |
| 2330 | if (rs.code() == rt.rm_.reg_code) { |
| 2331 | bits = OffsetSize::kOffset26; |
| 2332 | if (!is_near(L, bits)) return false; |
| 2333 | offset = GetOffset(offset, L, bits); |
| 2334 | bc(offset); |
| 2335 | } else if (rs.is(zero_reg)) { |
| 2336 | bits = OffsetSize::kOffset16; |
| 2337 | if (!is_near(L, bits)) return false; |
| 2338 | scratch = GetRtAsRegisterHelper(rt, scratch); |
| 2339 | offset = GetOffset(offset, L, bits); |
| 2340 | bgezc(scratch, offset); |
| 2341 | } else if (IsZero(rt)) { |
| 2342 | bits = OffsetSize::kOffset16; |
| 2343 | if (!is_near(L, bits)) return false; |
| 2344 | offset = GetOffset(offset, L, bits); |
| 2345 | blezc(rs, offset); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2346 | } else { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2347 | bits = OffsetSize::kOffset16; |
| 2348 | if (!is_near(L, bits)) return false; |
| 2349 | scratch = GetRtAsRegisterHelper(rt, scratch); |
| 2350 | DCHECK(!rs.is(scratch)); |
| 2351 | offset = GetOffset(offset, L, bits); |
| 2352 | bgec(scratch, rs, offset); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2353 | } |
| 2354 | break; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2355 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2356 | // Unsigned comparison. |
| 2357 | case Ugreater: |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2358 | // rs > rt |
| 2359 | if (rs.code() == rt.rm_.reg_code) { |
| 2360 | break; // No code needs to be emitted. |
| 2361 | } else if (rs.is(zero_reg)) { |
| 2362 | bits = OffsetSize::kOffset21; |
| 2363 | if (!is_near(L, bits)) return false; |
| 2364 | scratch = GetRtAsRegisterHelper(rt, scratch); |
| 2365 | offset = GetOffset(offset, L, bits); |
| 2366 | bnezc(scratch, offset); |
| 2367 | } else if (IsZero(rt)) { |
| 2368 | bits = OffsetSize::kOffset21; |
| 2369 | if (!is_near(L, bits)) return false; |
| 2370 | offset = GetOffset(offset, L, bits); |
| 2371 | bnezc(rs, offset); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2372 | } else { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2373 | bits = OffsetSize::kOffset16; |
| 2374 | if (!is_near(L, bits)) return false; |
| 2375 | scratch = GetRtAsRegisterHelper(rt, scratch); |
| 2376 | DCHECK(!rs.is(scratch)); |
| 2377 | offset = GetOffset(offset, L, bits); |
| 2378 | bltuc(scratch, rs, offset); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2379 | } |
| 2380 | break; |
| 2381 | case Ugreater_equal: |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2382 | // rs >= rt |
| 2383 | if (rs.code() == rt.rm_.reg_code) { |
| 2384 | bits = OffsetSize::kOffset26; |
| 2385 | if (!is_near(L, bits)) return false; |
| 2386 | offset = GetOffset(offset, L, bits); |
| 2387 | bc(offset); |
| 2388 | } else if (rs.is(zero_reg)) { |
| 2389 | bits = OffsetSize::kOffset21; |
| 2390 | if (!is_near(L, bits)) return false; |
| 2391 | scratch = GetRtAsRegisterHelper(rt, scratch); |
| 2392 | offset = GetOffset(offset, L, bits); |
| 2393 | beqzc(scratch, offset); |
| 2394 | } else if (IsZero(rt)) { |
| 2395 | bits = OffsetSize::kOffset26; |
| 2396 | if (!is_near(L, bits)) return false; |
| 2397 | offset = GetOffset(offset, L, bits); |
| 2398 | bc(offset); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2399 | } else { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2400 | bits = OffsetSize::kOffset16; |
| 2401 | if (!is_near(L, bits)) return false; |
| 2402 | scratch = GetRtAsRegisterHelper(rt, scratch); |
| 2403 | DCHECK(!rs.is(scratch)); |
| 2404 | offset = GetOffset(offset, L, bits); |
| 2405 | bgeuc(rs, scratch, offset); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2406 | } |
| 2407 | break; |
| 2408 | case Uless: |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2409 | // rs < rt |
| 2410 | if (rs.code() == rt.rm_.reg_code) { |
| 2411 | break; // No code needs to be emitted. |
| 2412 | } else if (rs.is(zero_reg)) { |
| 2413 | bits = OffsetSize::kOffset21; |
| 2414 | if (!is_near(L, bits)) return false; |
| 2415 | scratch = GetRtAsRegisterHelper(rt, scratch); |
| 2416 | offset = GetOffset(offset, L, bits); |
| 2417 | bnezc(scratch, offset); |
| 2418 | } else if (IsZero(rt)) { |
| 2419 | break; // No code needs to be emitted. |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2420 | } else { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2421 | bits = OffsetSize::kOffset16; |
| 2422 | if (!is_near(L, bits)) return false; |
| 2423 | scratch = GetRtAsRegisterHelper(rt, scratch); |
| 2424 | DCHECK(!rs.is(scratch)); |
| 2425 | offset = GetOffset(offset, L, bits); |
| 2426 | bltuc(rs, scratch, offset); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2427 | } |
| 2428 | break; |
| 2429 | case Uless_equal: |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2430 | // rs <= rt |
| 2431 | if (rs.code() == rt.rm_.reg_code) { |
| 2432 | bits = OffsetSize::kOffset26; |
| 2433 | if (!is_near(L, bits)) return false; |
| 2434 | offset = GetOffset(offset, L, bits); |
| 2435 | bc(offset); |
| 2436 | } else if (rs.is(zero_reg)) { |
| 2437 | bits = OffsetSize::kOffset26; |
| 2438 | if (!is_near(L, bits)) return false; |
| 2439 | scratch = GetRtAsRegisterHelper(rt, scratch); |
| 2440 | offset = GetOffset(offset, L, bits); |
| 2441 | bc(offset); |
| 2442 | } else if (IsZero(rt)) { |
| 2443 | bits = OffsetSize::kOffset21; |
| 2444 | if (!is_near(L, bits)) return false; |
| 2445 | offset = GetOffset(offset, L, bits); |
| 2446 | beqzc(rs, offset); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2447 | } else { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2448 | bits = OffsetSize::kOffset16; |
| 2449 | if (!is_near(L, bits)) return false; |
| 2450 | scratch = GetRtAsRegisterHelper(rt, scratch); |
| 2451 | DCHECK(!rs.is(scratch)); |
| 2452 | offset = GetOffset(offset, L, bits); |
| 2453 | bgeuc(scratch, rs, offset); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2454 | } |
| 2455 | break; |
| 2456 | default: |
| 2457 | UNREACHABLE(); |
| 2458 | } |
| 2459 | } |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2460 | CheckTrampolinePoolQuick(1); |
| 2461 | return true; |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2462 | } |
| 2463 | |
| 2464 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2465 | bool MacroAssembler::BranchShortHelper(int16_t offset, Label* L, Condition cond, |
| 2466 | Register rs, const Operand& rt, |
| 2467 | BranchDelaySlot bdslot) { |
| 2468 | DCHECK(L == nullptr || offset == 0); |
| 2469 | if (!is_near(L, OffsetSize::kOffset16)) return false; |
| 2470 | |
| 2471 | Register scratch = at; |
| 2472 | int32_t offset32; |
| 2473 | |
| 2474 | // Be careful to always use shifted_branch_offset only just before the |
| 2475 | // branch instruction, as the location will be remember for patching the |
| 2476 | // target. |
| 2477 | { |
| 2478 | BlockTrampolinePoolScope block_trampoline_pool(this); |
| 2479 | switch (cond) { |
| 2480 | case cc_always: |
| 2481 | offset32 = GetOffset(offset, L, OffsetSize::kOffset16); |
| 2482 | b(offset32); |
| 2483 | break; |
| 2484 | case eq: |
| 2485 | if (IsZero(rt)) { |
| 2486 | offset32 = GetOffset(offset, L, OffsetSize::kOffset16); |
| 2487 | beq(rs, zero_reg, offset32); |
| 2488 | } else { |
| 2489 | // We don't want any other register but scratch clobbered. |
| 2490 | scratch = GetRtAsRegisterHelper(rt, scratch); |
| 2491 | offset32 = GetOffset(offset, L, OffsetSize::kOffset16); |
| 2492 | beq(rs, scratch, offset32); |
| 2493 | } |
| 2494 | break; |
| 2495 | case ne: |
| 2496 | if (IsZero(rt)) { |
| 2497 | offset32 = GetOffset(offset, L, OffsetSize::kOffset16); |
| 2498 | bne(rs, zero_reg, offset32); |
| 2499 | } else { |
| 2500 | // We don't want any other register but scratch clobbered. |
| 2501 | scratch = GetRtAsRegisterHelper(rt, scratch); |
| 2502 | offset32 = GetOffset(offset, L, OffsetSize::kOffset16); |
| 2503 | bne(rs, scratch, offset32); |
| 2504 | } |
| 2505 | break; |
| 2506 | |
| 2507 | // Signed comparison. |
| 2508 | case greater: |
| 2509 | if (IsZero(rt)) { |
| 2510 | offset32 = GetOffset(offset, L, OffsetSize::kOffset16); |
| 2511 | bgtz(rs, offset32); |
| 2512 | } else { |
| 2513 | Slt(scratch, GetRtAsRegisterHelper(rt, scratch), rs); |
| 2514 | offset32 = GetOffset(offset, L, OffsetSize::kOffset16); |
| 2515 | bne(scratch, zero_reg, offset32); |
| 2516 | } |
| 2517 | break; |
| 2518 | case greater_equal: |
| 2519 | if (IsZero(rt)) { |
| 2520 | offset32 = GetOffset(offset, L, OffsetSize::kOffset16); |
| 2521 | bgez(rs, offset32); |
| 2522 | } else { |
| 2523 | Slt(scratch, rs, rt); |
| 2524 | offset32 = GetOffset(offset, L, OffsetSize::kOffset16); |
| 2525 | beq(scratch, zero_reg, offset32); |
| 2526 | } |
| 2527 | break; |
| 2528 | case less: |
| 2529 | if (IsZero(rt)) { |
| 2530 | offset32 = GetOffset(offset, L, OffsetSize::kOffset16); |
| 2531 | bltz(rs, offset32); |
| 2532 | } else { |
| 2533 | Slt(scratch, rs, rt); |
| 2534 | offset32 = GetOffset(offset, L, OffsetSize::kOffset16); |
| 2535 | bne(scratch, zero_reg, offset32); |
| 2536 | } |
| 2537 | break; |
| 2538 | case less_equal: |
| 2539 | if (IsZero(rt)) { |
| 2540 | offset32 = GetOffset(offset, L, OffsetSize::kOffset16); |
| 2541 | blez(rs, offset32); |
| 2542 | } else { |
| 2543 | Slt(scratch, GetRtAsRegisterHelper(rt, scratch), rs); |
| 2544 | offset32 = GetOffset(offset, L, OffsetSize::kOffset16); |
| 2545 | beq(scratch, zero_reg, offset32); |
| 2546 | } |
| 2547 | break; |
| 2548 | |
| 2549 | // Unsigned comparison. |
| 2550 | case Ugreater: |
| 2551 | if (IsZero(rt)) { |
| 2552 | offset32 = GetOffset(offset, L, OffsetSize::kOffset16); |
| 2553 | bne(rs, zero_reg, offset32); |
| 2554 | } else { |
| 2555 | Sltu(scratch, GetRtAsRegisterHelper(rt, scratch), rs); |
| 2556 | offset32 = GetOffset(offset, L, OffsetSize::kOffset16); |
| 2557 | bne(scratch, zero_reg, offset32); |
| 2558 | } |
| 2559 | break; |
| 2560 | case Ugreater_equal: |
| 2561 | if (IsZero(rt)) { |
| 2562 | offset32 = GetOffset(offset, L, OffsetSize::kOffset16); |
| 2563 | b(offset32); |
| 2564 | } else { |
| 2565 | Sltu(scratch, rs, rt); |
| 2566 | offset32 = GetOffset(offset, L, OffsetSize::kOffset16); |
| 2567 | beq(scratch, zero_reg, offset32); |
| 2568 | } |
| 2569 | break; |
| 2570 | case Uless: |
| 2571 | if (IsZero(rt)) { |
| 2572 | return true; // No code needs to be emitted. |
| 2573 | } else { |
| 2574 | Sltu(scratch, rs, rt); |
| 2575 | offset32 = GetOffset(offset, L, OffsetSize::kOffset16); |
| 2576 | bne(scratch, zero_reg, offset32); |
| 2577 | } |
| 2578 | break; |
| 2579 | case Uless_equal: |
| 2580 | if (IsZero(rt)) { |
| 2581 | offset32 = GetOffset(offset, L, OffsetSize::kOffset16); |
| 2582 | beq(rs, zero_reg, offset32); |
| 2583 | } else { |
| 2584 | Sltu(scratch, GetRtAsRegisterHelper(rt, scratch), rs); |
| 2585 | offset32 = GetOffset(offset, L, OffsetSize::kOffset16); |
| 2586 | beq(scratch, zero_reg, offset32); |
| 2587 | } |
| 2588 | break; |
| 2589 | default: |
| 2590 | UNREACHABLE(); |
| 2591 | } |
| 2592 | } |
| 2593 | // Emit a nop in the branch delay slot if required. |
| 2594 | if (bdslot == PROTECT) |
| 2595 | nop(); |
| 2596 | |
| 2597 | return true; |
| 2598 | } |
| 2599 | |
| 2600 | |
| 2601 | bool MacroAssembler::BranchShortCheck(int32_t offset, Label* L, Condition cond, |
| 2602 | Register rs, const Operand& rt, |
| 2603 | BranchDelaySlot bdslot) { |
| 2604 | BRANCH_ARGS_CHECK(cond, rs, rt); |
| 2605 | |
| 2606 | if (!L) { |
| 2607 | if (IsMipsArchVariant(kMips32r6) && bdslot == PROTECT) { |
| 2608 | DCHECK(is_int26(offset)); |
| 2609 | return BranchShortHelperR6(offset, nullptr, cond, rs, rt); |
| 2610 | } else { |
| 2611 | DCHECK(is_int16(offset)); |
| 2612 | return BranchShortHelper(offset, nullptr, cond, rs, rt, bdslot); |
| 2613 | } |
| 2614 | } else { |
| 2615 | DCHECK(offset == 0); |
| 2616 | if (IsMipsArchVariant(kMips32r6) && bdslot == PROTECT) { |
| 2617 | return BranchShortHelperR6(0, L, cond, rs, rt); |
| 2618 | } else { |
| 2619 | return BranchShortHelper(0, L, cond, rs, rt, bdslot); |
| 2620 | } |
| 2621 | } |
| 2622 | return false; |
| 2623 | } |
| 2624 | |
| 2625 | |
| 2626 | void MacroAssembler::BranchShort(int32_t offset, Condition cond, Register rs, |
| 2627 | const Operand& rt, BranchDelaySlot bdslot) { |
| 2628 | BranchShortCheck(offset, nullptr, cond, rs, rt, bdslot); |
| 2629 | } |
| 2630 | |
| 2631 | |
| 2632 | void MacroAssembler::BranchShort(Label* L, Condition cond, Register rs, |
| 2633 | const Operand& rt, BranchDelaySlot bdslot) { |
| 2634 | BranchShortCheck(0, L, cond, rs, rt, bdslot); |
| 2635 | } |
| 2636 | |
| 2637 | |
| 2638 | void MacroAssembler::BranchAndLink(int32_t offset, BranchDelaySlot bdslot) { |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 2639 | BranchAndLinkShort(offset, bdslot); |
| 2640 | } |
| 2641 | |
| 2642 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2643 | void MacroAssembler::BranchAndLink(int32_t offset, Condition cond, Register rs, |
| 2644 | const Operand& rt, BranchDelaySlot bdslot) { |
| 2645 | bool is_near = BranchAndLinkShortCheck(offset, nullptr, cond, rs, rt, bdslot); |
| 2646 | DCHECK(is_near); |
| 2647 | USE(is_near); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 2648 | } |
| 2649 | |
| 2650 | |
| 2651 | void MacroAssembler::BranchAndLink(Label* L, BranchDelaySlot bdslot) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2652 | if (L->is_bound()) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2653 | if (is_near_branch(L)) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2654 | BranchAndLinkShort(L, bdslot); |
| 2655 | } else { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2656 | BranchAndLinkLong(L, bdslot); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2657 | } |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 2658 | } else { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2659 | if (is_trampoline_emitted()) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2660 | BranchAndLinkLong(L, bdslot); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2661 | } else { |
| 2662 | BranchAndLinkShort(L, bdslot); |
| 2663 | } |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 2664 | } |
| 2665 | } |
| 2666 | |
| 2667 | |
| 2668 | void MacroAssembler::BranchAndLink(Label* L, Condition cond, Register rs, |
| 2669 | const Operand& rt, |
| 2670 | BranchDelaySlot bdslot) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2671 | if (L->is_bound()) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2672 | if (!BranchAndLinkShortCheck(0, L, cond, rs, rt, bdslot)) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2673 | Label skip; |
| 2674 | Condition neg_cond = NegateCondition(cond); |
| 2675 | BranchShort(&skip, neg_cond, rs, rt); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2676 | BranchAndLinkLong(L, bdslot); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2677 | bind(&skip); |
| 2678 | } |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 2679 | } else { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2680 | if (is_trampoline_emitted()) { |
| 2681 | Label skip; |
| 2682 | Condition neg_cond = NegateCondition(cond); |
| 2683 | BranchShort(&skip, neg_cond, rs, rt); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2684 | BranchAndLinkLong(L, bdslot); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2685 | bind(&skip); |
| 2686 | } else { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2687 | BranchAndLinkShortCheck(0, L, cond, rs, rt, bdslot); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2688 | } |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 2689 | } |
| 2690 | } |
| 2691 | |
| 2692 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2693 | void MacroAssembler::BranchAndLinkShortHelper(int16_t offset, Label* L, |
| 2694 | BranchDelaySlot bdslot) { |
| 2695 | DCHECK(L == nullptr || offset == 0); |
| 2696 | offset = GetOffset(offset, L, OffsetSize::kOffset16); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2697 | bal(offset); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 2698 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2699 | // Emit a nop in the branch delay slot if required. |
| 2700 | if (bdslot == PROTECT) |
| 2701 | nop(); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 2702 | } |
| 2703 | |
| 2704 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2705 | void MacroAssembler::BranchAndLinkShortHelperR6(int32_t offset, Label* L) { |
| 2706 | DCHECK(L == nullptr || offset == 0); |
| 2707 | offset = GetOffset(offset, L, OffsetSize::kOffset26); |
| 2708 | balc(offset); |
| 2709 | } |
| 2710 | |
| 2711 | |
| 2712 | void MacroAssembler::BranchAndLinkShort(int32_t offset, |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 2713 | BranchDelaySlot bdslot) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2714 | if (IsMipsArchVariant(kMips32r6) && bdslot == PROTECT) { |
| 2715 | DCHECK(is_int26(offset)); |
| 2716 | BranchAndLinkShortHelperR6(offset, nullptr); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2717 | } else { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2718 | DCHECK(is_int16(offset)); |
| 2719 | BranchAndLinkShortHelper(offset, nullptr, bdslot); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 2720 | } |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2721 | } |
| 2722 | |
| 2723 | |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 2724 | void MacroAssembler::BranchAndLinkShort(Label* L, BranchDelaySlot bdslot) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2725 | if (IsMipsArchVariant(kMips32r6) && bdslot == PROTECT) { |
| 2726 | BranchAndLinkShortHelperR6(0, L); |
| 2727 | } else { |
| 2728 | BranchAndLinkShortHelper(0, L, bdslot); |
| 2729 | } |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2730 | } |
| 2731 | |
| 2732 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2733 | bool MacroAssembler::BranchAndLinkShortHelperR6(int32_t offset, Label* L, |
| 2734 | Condition cond, Register rs, |
| 2735 | const Operand& rt) { |
| 2736 | DCHECK(L == nullptr || offset == 0); |
| 2737 | Register scratch = rs.is(at) ? t8 : at; |
| 2738 | OffsetSize bits = OffsetSize::kOffset16; |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2739 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2740 | BlockTrampolinePoolScope block_trampoline_pool(this); |
| 2741 | DCHECK((cond == cc_always && is_int26(offset)) || is_int16(offset)); |
| 2742 | switch (cond) { |
| 2743 | case cc_always: |
| 2744 | bits = OffsetSize::kOffset26; |
| 2745 | if (!is_near(L, bits)) return false; |
| 2746 | offset = GetOffset(offset, L, bits); |
| 2747 | balc(offset); |
| 2748 | break; |
| 2749 | case eq: |
| 2750 | if (!is_near(L, bits)) return false; |
| 2751 | Subu(scratch, rs, rt); |
| 2752 | offset = GetOffset(offset, L, bits); |
| 2753 | beqzalc(scratch, offset); |
| 2754 | break; |
| 2755 | case ne: |
| 2756 | if (!is_near(L, bits)) return false; |
| 2757 | Subu(scratch, rs, rt); |
| 2758 | offset = GetOffset(offset, L, bits); |
| 2759 | bnezalc(scratch, offset); |
| 2760 | break; |
| 2761 | |
| 2762 | // Signed comparison. |
| 2763 | case greater: |
| 2764 | // rs > rt |
| 2765 | if (rs.code() == rt.rm_.reg_code) { |
| 2766 | break; // No code needs to be emitted. |
| 2767 | } else if (rs.is(zero_reg)) { |
| 2768 | if (!is_near(L, bits)) return false; |
| 2769 | scratch = GetRtAsRegisterHelper(rt, scratch); |
| 2770 | offset = GetOffset(offset, L, bits); |
| 2771 | bltzalc(scratch, offset); |
| 2772 | } else if (IsZero(rt)) { |
| 2773 | if (!is_near(L, bits)) return false; |
| 2774 | offset = GetOffset(offset, L, bits); |
| 2775 | bgtzalc(rs, offset); |
| 2776 | } else { |
| 2777 | if (!is_near(L, bits)) return false; |
| 2778 | Slt(scratch, GetRtAsRegisterHelper(rt, scratch), rs); |
| 2779 | offset = GetOffset(offset, L, bits); |
| 2780 | bnezalc(scratch, offset); |
| 2781 | } |
| 2782 | break; |
| 2783 | case greater_equal: |
| 2784 | // rs >= rt |
| 2785 | if (rs.code() == rt.rm_.reg_code) { |
| 2786 | bits = OffsetSize::kOffset26; |
| 2787 | if (!is_near(L, bits)) return false; |
| 2788 | offset = GetOffset(offset, L, bits); |
| 2789 | balc(offset); |
| 2790 | } else if (rs.is(zero_reg)) { |
| 2791 | if (!is_near(L, bits)) return false; |
| 2792 | scratch = GetRtAsRegisterHelper(rt, scratch); |
| 2793 | offset = GetOffset(offset, L, bits); |
| 2794 | blezalc(scratch, offset); |
| 2795 | } else if (IsZero(rt)) { |
| 2796 | if (!is_near(L, bits)) return false; |
| 2797 | offset = GetOffset(offset, L, bits); |
| 2798 | bgezalc(rs, offset); |
| 2799 | } else { |
| 2800 | if (!is_near(L, bits)) return false; |
| 2801 | Slt(scratch, rs, rt); |
| 2802 | offset = GetOffset(offset, L, bits); |
| 2803 | beqzalc(scratch, offset); |
| 2804 | } |
| 2805 | break; |
| 2806 | case less: |
| 2807 | // rs < rt |
| 2808 | if (rs.code() == rt.rm_.reg_code) { |
| 2809 | break; // No code needs to be emitted. |
| 2810 | } else if (rs.is(zero_reg)) { |
| 2811 | if (!is_near(L, bits)) return false; |
| 2812 | scratch = GetRtAsRegisterHelper(rt, scratch); |
| 2813 | offset = GetOffset(offset, L, bits); |
| 2814 | bgtzalc(scratch, offset); |
| 2815 | } else if (IsZero(rt)) { |
| 2816 | if (!is_near(L, bits)) return false; |
| 2817 | offset = GetOffset(offset, L, bits); |
| 2818 | bltzalc(rs, offset); |
| 2819 | } else { |
| 2820 | if (!is_near(L, bits)) return false; |
| 2821 | Slt(scratch, rs, rt); |
| 2822 | offset = GetOffset(offset, L, bits); |
| 2823 | bnezalc(scratch, offset); |
| 2824 | } |
| 2825 | break; |
| 2826 | case less_equal: |
| 2827 | // rs <= r2 |
| 2828 | if (rs.code() == rt.rm_.reg_code) { |
| 2829 | bits = OffsetSize::kOffset26; |
| 2830 | if (!is_near(L, bits)) return false; |
| 2831 | offset = GetOffset(offset, L, bits); |
| 2832 | balc(offset); |
| 2833 | } else if (rs.is(zero_reg)) { |
| 2834 | if (!is_near(L, bits)) return false; |
| 2835 | scratch = GetRtAsRegisterHelper(rt, scratch); |
| 2836 | offset = GetOffset(offset, L, bits); |
| 2837 | bgezalc(scratch, offset); |
| 2838 | } else if (IsZero(rt)) { |
| 2839 | if (!is_near(L, bits)) return false; |
| 2840 | offset = GetOffset(offset, L, bits); |
| 2841 | blezalc(rs, offset); |
| 2842 | } else { |
| 2843 | if (!is_near(L, bits)) return false; |
| 2844 | Slt(scratch, GetRtAsRegisterHelper(rt, scratch), rs); |
| 2845 | offset = GetOffset(offset, L, bits); |
| 2846 | beqzalc(scratch, offset); |
| 2847 | } |
| 2848 | break; |
| 2849 | |
| 2850 | |
| 2851 | // Unsigned comparison. |
| 2852 | case Ugreater: |
| 2853 | // rs > r2 |
| 2854 | if (!is_near(L, bits)) return false; |
| 2855 | Sltu(scratch, GetRtAsRegisterHelper(rt, scratch), rs); |
| 2856 | offset = GetOffset(offset, L, bits); |
| 2857 | bnezalc(scratch, offset); |
| 2858 | break; |
| 2859 | case Ugreater_equal: |
| 2860 | // rs >= r2 |
| 2861 | if (!is_near(L, bits)) return false; |
| 2862 | Sltu(scratch, rs, rt); |
| 2863 | offset = GetOffset(offset, L, bits); |
| 2864 | beqzalc(scratch, offset); |
| 2865 | break; |
| 2866 | case Uless: |
| 2867 | // rs < r2 |
| 2868 | if (!is_near(L, bits)) return false; |
| 2869 | Sltu(scratch, rs, rt); |
| 2870 | offset = GetOffset(offset, L, bits); |
| 2871 | bnezalc(scratch, offset); |
| 2872 | break; |
| 2873 | case Uless_equal: |
| 2874 | // rs <= r2 |
| 2875 | if (!is_near(L, bits)) return false; |
| 2876 | Sltu(scratch, GetRtAsRegisterHelper(rt, scratch), rs); |
| 2877 | offset = GetOffset(offset, L, bits); |
| 2878 | beqzalc(scratch, offset); |
| 2879 | break; |
| 2880 | default: |
| 2881 | UNREACHABLE(); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2882 | } |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2883 | return true; |
| 2884 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2885 | |
| 2886 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2887 | // Pre r6 we need to use a bgezal or bltzal, but they can't be used directly |
| 2888 | // with the slt instructions. We could use sub or add instead but we would miss |
| 2889 | // overflow cases, so we keep slt and add an intermediate third instruction. |
| 2890 | bool MacroAssembler::BranchAndLinkShortHelper(int16_t offset, Label* L, |
| 2891 | Condition cond, Register rs, |
| 2892 | const Operand& rt, |
| 2893 | BranchDelaySlot bdslot) { |
| 2894 | DCHECK(L == nullptr || offset == 0); |
| 2895 | if (!is_near(L, OffsetSize::kOffset16)) return false; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2896 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2897 | Register scratch = t8; |
| 2898 | BlockTrampolinePoolScope block_trampoline_pool(this); |
| 2899 | |
| 2900 | switch (cond) { |
| 2901 | case cc_always: |
| 2902 | offset = GetOffset(offset, L, OffsetSize::kOffset16); |
| 2903 | bal(offset); |
| 2904 | break; |
| 2905 | case eq: |
| 2906 | bne(rs, GetRtAsRegisterHelper(rt, scratch), 2); |
| 2907 | nop(); |
| 2908 | offset = GetOffset(offset, L, OffsetSize::kOffset16); |
| 2909 | bal(offset); |
| 2910 | break; |
| 2911 | case ne: |
| 2912 | beq(rs, GetRtAsRegisterHelper(rt, scratch), 2); |
| 2913 | nop(); |
| 2914 | offset = GetOffset(offset, L, OffsetSize::kOffset16); |
| 2915 | bal(offset); |
| 2916 | break; |
| 2917 | |
| 2918 | // Signed comparison. |
| 2919 | case greater: |
| 2920 | Slt(scratch, GetRtAsRegisterHelper(rt, scratch), rs); |
| 2921 | addiu(scratch, scratch, -1); |
| 2922 | offset = GetOffset(offset, L, OffsetSize::kOffset16); |
| 2923 | bgezal(scratch, offset); |
| 2924 | break; |
| 2925 | case greater_equal: |
| 2926 | Slt(scratch, rs, rt); |
| 2927 | addiu(scratch, scratch, -1); |
| 2928 | offset = GetOffset(offset, L, OffsetSize::kOffset16); |
| 2929 | bltzal(scratch, offset); |
| 2930 | break; |
| 2931 | case less: |
| 2932 | Slt(scratch, rs, rt); |
| 2933 | addiu(scratch, scratch, -1); |
| 2934 | offset = GetOffset(offset, L, OffsetSize::kOffset16); |
| 2935 | bgezal(scratch, offset); |
| 2936 | break; |
| 2937 | case less_equal: |
| 2938 | Slt(scratch, GetRtAsRegisterHelper(rt, scratch), rs); |
| 2939 | addiu(scratch, scratch, -1); |
| 2940 | offset = GetOffset(offset, L, OffsetSize::kOffset16); |
| 2941 | bltzal(scratch, offset); |
| 2942 | break; |
| 2943 | |
| 2944 | // Unsigned comparison. |
| 2945 | case Ugreater: |
| 2946 | Sltu(scratch, GetRtAsRegisterHelper(rt, scratch), rs); |
| 2947 | addiu(scratch, scratch, -1); |
| 2948 | offset = GetOffset(offset, L, OffsetSize::kOffset16); |
| 2949 | bgezal(scratch, offset); |
| 2950 | break; |
| 2951 | case Ugreater_equal: |
| 2952 | Sltu(scratch, rs, rt); |
| 2953 | addiu(scratch, scratch, -1); |
| 2954 | offset = GetOffset(offset, L, OffsetSize::kOffset16); |
| 2955 | bltzal(scratch, offset); |
| 2956 | break; |
| 2957 | case Uless: |
| 2958 | Sltu(scratch, rs, rt); |
| 2959 | addiu(scratch, scratch, -1); |
| 2960 | offset = GetOffset(offset, L, OffsetSize::kOffset16); |
| 2961 | bgezal(scratch, offset); |
| 2962 | break; |
| 2963 | case Uless_equal: |
| 2964 | Sltu(scratch, GetRtAsRegisterHelper(rt, scratch), rs); |
| 2965 | addiu(scratch, scratch, -1); |
| 2966 | offset = GetOffset(offset, L, OffsetSize::kOffset16); |
| 2967 | bltzal(scratch, offset); |
| 2968 | break; |
| 2969 | |
| 2970 | default: |
| 2971 | UNREACHABLE(); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2972 | } |
| 2973 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2974 | // Emit a nop in the branch delay slot if required. |
| 2975 | if (bdslot == PROTECT) |
| 2976 | nop(); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2977 | |
| 2978 | return true; |
| 2979 | } |
| 2980 | |
| 2981 | |
| 2982 | bool MacroAssembler::BranchAndLinkShortCheck(int32_t offset, Label* L, |
| 2983 | Condition cond, Register rs, |
| 2984 | const Operand& rt, |
| 2985 | BranchDelaySlot bdslot) { |
| 2986 | BRANCH_ARGS_CHECK(cond, rs, rt); |
| 2987 | |
| 2988 | if (!L) { |
| 2989 | if (IsMipsArchVariant(kMips32r6) && bdslot == PROTECT) { |
| 2990 | DCHECK(is_int26(offset)); |
| 2991 | return BranchAndLinkShortHelperR6(offset, nullptr, cond, rs, rt); |
| 2992 | } else { |
| 2993 | DCHECK(is_int16(offset)); |
| 2994 | return BranchAndLinkShortHelper(offset, nullptr, cond, rs, rt, bdslot); |
| 2995 | } |
| 2996 | } else { |
| 2997 | DCHECK(offset == 0); |
| 2998 | if (IsMipsArchVariant(kMips32r6) && bdslot == PROTECT) { |
| 2999 | return BranchAndLinkShortHelperR6(0, L, cond, rs, rt); |
| 3000 | } else { |
| 3001 | return BranchAndLinkShortHelper(0, L, cond, rs, rt, bdslot); |
| 3002 | } |
| 3003 | } |
| 3004 | return false; |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3005 | } |
| 3006 | |
| 3007 | |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 3008 | void MacroAssembler::Jump(Register target, |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3009 | Condition cond, |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 3010 | Register rs, |
| 3011 | const Operand& rt, |
| 3012 | BranchDelaySlot bd) { |
| 3013 | BlockTrampolinePoolScope block_trampoline_pool(this); |
| 3014 | if (cond == cc_always) { |
| 3015 | jr(target); |
| 3016 | } else { |
| 3017 | BRANCH_ARGS_CHECK(cond, rs, rt); |
| 3018 | Branch(2, NegateCondition(cond), rs, rt); |
| 3019 | jr(target); |
| 3020 | } |
| 3021 | // Emit a nop in the branch delay slot if required. |
| 3022 | if (bd == PROTECT) |
| 3023 | nop(); |
| 3024 | } |
| 3025 | |
| 3026 | |
| 3027 | void MacroAssembler::Jump(intptr_t target, |
| 3028 | RelocInfo::Mode rmode, |
| 3029 | Condition cond, |
| 3030 | Register rs, |
| 3031 | const Operand& rt, |
| 3032 | BranchDelaySlot bd) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3033 | Label skip; |
| 3034 | if (cond != cc_always) { |
| 3035 | Branch(USE_DELAY_SLOT, &skip, NegateCondition(cond), rs, rt); |
| 3036 | } |
| 3037 | // The first instruction of 'li' may be placed in the delay slot. |
| 3038 | // This is not an issue, t9 is expected to be clobbered anyway. |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 3039 | li(t9, Operand(target, rmode)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3040 | Jump(t9, al, zero_reg, Operand(zero_reg), bd); |
| 3041 | bind(&skip); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 3042 | } |
| 3043 | |
| 3044 | |
| 3045 | void MacroAssembler::Jump(Address target, |
| 3046 | RelocInfo::Mode rmode, |
| 3047 | Condition cond, |
| 3048 | Register rs, |
| 3049 | const Operand& rt, |
| 3050 | BranchDelaySlot bd) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3051 | DCHECK(!RelocInfo::IsCodeTarget(rmode)); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 3052 | Jump(reinterpret_cast<intptr_t>(target), rmode, cond, rs, rt, bd); |
| 3053 | } |
| 3054 | |
| 3055 | |
| 3056 | void MacroAssembler::Jump(Handle<Code> code, |
| 3057 | RelocInfo::Mode rmode, |
| 3058 | Condition cond, |
| 3059 | Register rs, |
| 3060 | const Operand& rt, |
| 3061 | BranchDelaySlot bd) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3062 | DCHECK(RelocInfo::IsCodeTarget(rmode)); |
| 3063 | AllowDeferredHandleDereference embedding_raw_address; |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 3064 | Jump(reinterpret_cast<intptr_t>(code.location()), rmode, cond, rs, rt, bd); |
| 3065 | } |
| 3066 | |
| 3067 | |
| 3068 | int MacroAssembler::CallSize(Register target, |
| 3069 | Condition cond, |
| 3070 | Register rs, |
| 3071 | const Operand& rt, |
| 3072 | BranchDelaySlot bd) { |
| 3073 | int size = 0; |
| 3074 | |
| 3075 | if (cond == cc_always) { |
| 3076 | size += 1; |
| 3077 | } else { |
| 3078 | size += 3; |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3079 | } |
| 3080 | |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 3081 | if (bd == PROTECT) |
| 3082 | size += 1; |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3083 | |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 3084 | return size * kInstrSize; |
| 3085 | } |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3086 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3087 | |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 3088 | // Note: To call gcc-compiled C code on mips, you must call thru t9. |
| 3089 | void MacroAssembler::Call(Register target, |
| 3090 | Condition cond, |
| 3091 | Register rs, |
| 3092 | const Operand& rt, |
| 3093 | BranchDelaySlot bd) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3094 | #ifdef DEBUG |
| 3095 | int size = IsPrevInstrCompactBranch() ? kInstrSize : 0; |
| 3096 | #endif |
| 3097 | |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 3098 | BlockTrampolinePoolScope block_trampoline_pool(this); |
| 3099 | Label start; |
| 3100 | bind(&start); |
| 3101 | if (cond == cc_always) { |
| 3102 | jalr(target); |
| 3103 | } else { |
| 3104 | BRANCH_ARGS_CHECK(cond, rs, rt); |
| 3105 | Branch(2, NegateCondition(cond), rs, rt); |
| 3106 | jalr(target); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3107 | } |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 3108 | // Emit a nop in the branch delay slot if required. |
| 3109 | if (bd == PROTECT) |
| 3110 | nop(); |
| 3111 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3112 | #ifdef DEBUG |
| 3113 | CHECK_EQ(size + CallSize(target, cond, rs, rt, bd), |
| 3114 | SizeOfCodeGeneratedSince(&start)); |
| 3115 | #endif |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 3116 | } |
| 3117 | |
| 3118 | |
| 3119 | int MacroAssembler::CallSize(Address target, |
| 3120 | RelocInfo::Mode rmode, |
| 3121 | Condition cond, |
| 3122 | Register rs, |
| 3123 | const Operand& rt, |
| 3124 | BranchDelaySlot bd) { |
| 3125 | int size = CallSize(t9, cond, rs, rt, bd); |
| 3126 | return size + 2 * kInstrSize; |
| 3127 | } |
| 3128 | |
| 3129 | |
| 3130 | void MacroAssembler::Call(Address target, |
| 3131 | RelocInfo::Mode rmode, |
| 3132 | Condition cond, |
| 3133 | Register rs, |
| 3134 | const Operand& rt, |
| 3135 | BranchDelaySlot bd) { |
| 3136 | BlockTrampolinePoolScope block_trampoline_pool(this); |
| 3137 | Label start; |
| 3138 | bind(&start); |
| 3139 | int32_t target_int = reinterpret_cast<int32_t>(target); |
| 3140 | // Must record previous source positions before the |
| 3141 | // li() generates a new code target. |
| 3142 | positions_recorder()->WriteRecordedPositions(); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3143 | li(t9, Operand(target_int, rmode), CONSTANT_SIZE); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 3144 | Call(t9, cond, rs, rt, bd); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3145 | DCHECK_EQ(CallSize(target, rmode, cond, rs, rt, bd), |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 3146 | SizeOfCodeGeneratedSince(&start)); |
| 3147 | } |
| 3148 | |
| 3149 | |
| 3150 | int MacroAssembler::CallSize(Handle<Code> code, |
| 3151 | RelocInfo::Mode rmode, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3152 | TypeFeedbackId ast_id, |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 3153 | Condition cond, |
| 3154 | Register rs, |
| 3155 | const Operand& rt, |
| 3156 | BranchDelaySlot bd) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3157 | AllowDeferredHandleDereference using_raw_address; |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 3158 | return CallSize(reinterpret_cast<Address>(code.location()), |
| 3159 | rmode, cond, rs, rt, bd); |
| 3160 | } |
| 3161 | |
| 3162 | |
| 3163 | void MacroAssembler::Call(Handle<Code> code, |
| 3164 | RelocInfo::Mode rmode, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3165 | TypeFeedbackId ast_id, |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 3166 | Condition cond, |
| 3167 | Register rs, |
| 3168 | const Operand& rt, |
| 3169 | BranchDelaySlot bd) { |
| 3170 | BlockTrampolinePoolScope block_trampoline_pool(this); |
| 3171 | Label start; |
| 3172 | bind(&start); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3173 | DCHECK(RelocInfo::IsCodeTarget(rmode)); |
| 3174 | if (rmode == RelocInfo::CODE_TARGET && !ast_id.IsNone()) { |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 3175 | SetRecordedAstId(ast_id); |
| 3176 | rmode = RelocInfo::CODE_TARGET_WITH_ID; |
| 3177 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3178 | AllowDeferredHandleDereference embedding_raw_address; |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 3179 | Call(reinterpret_cast<Address>(code.location()), rmode, cond, rs, rt, bd); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3180 | DCHECK_EQ(CallSize(code, rmode, ast_id, cond, rs, rt, bd), |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 3181 | SizeOfCodeGeneratedSince(&start)); |
| 3182 | } |
| 3183 | |
| 3184 | |
| 3185 | void MacroAssembler::Ret(Condition cond, |
| 3186 | Register rs, |
| 3187 | const Operand& rt, |
| 3188 | BranchDelaySlot bd) { |
| 3189 | Jump(ra, cond, rs, rt, bd); |
| 3190 | } |
| 3191 | |
| 3192 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3193 | void MacroAssembler::BranchLong(Label* L, BranchDelaySlot bdslot) { |
| 3194 | if (IsMipsArchVariant(kMips32r6) && bdslot == PROTECT && |
| 3195 | (!L->is_bound() || is_near_r6(L))) { |
| 3196 | BranchShortHelperR6(0, L); |
| 3197 | } else { |
| 3198 | BlockTrampolinePoolScope block_trampoline_pool(this); |
| 3199 | uint32_t imm32; |
| 3200 | imm32 = jump_address(L); |
| 3201 | { |
| 3202 | BlockGrowBufferScope block_buf_growth(this); |
| 3203 | // Buffer growth (and relocation) must be blocked for internal references |
| 3204 | // until associated instructions are emitted and available to be patched. |
| 3205 | RecordRelocInfo(RelocInfo::INTERNAL_REFERENCE_ENCODED); |
| 3206 | lui(at, (imm32 & kHiMask) >> kLuiShift); |
| 3207 | ori(at, at, (imm32 & kImm16Mask)); |
| 3208 | } |
| 3209 | jr(at); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 3210 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3211 | // Emit a nop in the branch delay slot if required. |
| 3212 | if (bdslot == PROTECT) nop(); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 3213 | } |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 3214 | } |
| 3215 | |
| 3216 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3217 | void MacroAssembler::BranchAndLinkLong(Label* L, BranchDelaySlot bdslot) { |
| 3218 | if (IsMipsArchVariant(kMips32r6) && bdslot == PROTECT && |
| 3219 | (!L->is_bound() || is_near_r6(L))) { |
| 3220 | BranchAndLinkShortHelperR6(0, L); |
| 3221 | } else { |
| 3222 | BlockTrampolinePoolScope block_trampoline_pool(this); |
| 3223 | uint32_t imm32; |
| 3224 | imm32 = jump_address(L); |
| 3225 | { |
| 3226 | BlockGrowBufferScope block_buf_growth(this); |
| 3227 | // Buffer growth (and relocation) must be blocked for internal references |
| 3228 | // until associated instructions are emitted and available to be patched. |
| 3229 | RecordRelocInfo(RelocInfo::INTERNAL_REFERENCE_ENCODED); |
| 3230 | lui(at, (imm32 & kHiMask) >> kLuiShift); |
| 3231 | ori(at, at, (imm32 & kImm16Mask)); |
| 3232 | } |
| 3233 | jalr(at); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 3234 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3235 | // Emit a nop in the branch delay slot if required. |
| 3236 | if (bdslot == PROTECT) nop(); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 3237 | } |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3238 | } |
| 3239 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3240 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3241 | void MacroAssembler::DropAndRet(int drop) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3242 | DCHECK(is_int16(drop * kPointerSize)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3243 | Ret(USE_DELAY_SLOT); |
| 3244 | addiu(sp, sp, drop * kPointerSize); |
| 3245 | } |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3246 | |
| 3247 | void MacroAssembler::DropAndRet(int drop, |
| 3248 | Condition cond, |
| 3249 | Register r1, |
| 3250 | const Operand& r2) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3251 | // Both Drop and Ret need to be conditional. |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3252 | Label skip; |
| 3253 | if (cond != cc_always) { |
| 3254 | Branch(&skip, NegateCondition(cond), r1, r2); |
| 3255 | } |
| 3256 | |
| 3257 | Drop(drop); |
| 3258 | Ret(); |
| 3259 | |
| 3260 | if (cond != cc_always) { |
| 3261 | bind(&skip); |
| 3262 | } |
| 3263 | } |
| 3264 | |
| 3265 | |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 3266 | void MacroAssembler::Drop(int count, |
| 3267 | Condition cond, |
| 3268 | Register reg, |
| 3269 | const Operand& op) { |
| 3270 | if (count <= 0) { |
| 3271 | return; |
| 3272 | } |
| 3273 | |
| 3274 | Label skip; |
| 3275 | |
| 3276 | if (cond != al) { |
| 3277 | Branch(&skip, NegateCondition(cond), reg, op); |
| 3278 | } |
| 3279 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3280 | Addu(sp, sp, Operand(count * kPointerSize)); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 3281 | |
| 3282 | if (cond != al) { |
| 3283 | bind(&skip); |
| 3284 | } |
| 3285 | } |
| 3286 | |
| 3287 | |
| 3288 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3289 | void MacroAssembler::Swap(Register reg1, |
| 3290 | Register reg2, |
| 3291 | Register scratch) { |
| 3292 | if (scratch.is(no_reg)) { |
| 3293 | Xor(reg1, reg1, Operand(reg2)); |
| 3294 | Xor(reg2, reg2, Operand(reg1)); |
| 3295 | Xor(reg1, reg1, Operand(reg2)); |
| 3296 | } else { |
| 3297 | mov(scratch, reg1); |
| 3298 | mov(reg1, reg2); |
| 3299 | mov(reg2, scratch); |
| 3300 | } |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 3301 | } |
| 3302 | |
| 3303 | |
| 3304 | void MacroAssembler::Call(Label* target) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3305 | BranchAndLink(target); |
| 3306 | } |
| 3307 | |
| 3308 | |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 3309 | void MacroAssembler::Push(Handle<Object> handle) { |
| 3310 | li(at, Operand(handle)); |
| 3311 | push(at); |
| 3312 | } |
| 3313 | |
| 3314 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3315 | void MacroAssembler::DebugBreak() { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3316 | PrepareCEntryArgs(0); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3317 | PrepareCEntryFunction( |
| 3318 | ExternalReference(Runtime::kHandleDebuggerStatement, isolate())); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3319 | CEntryStub ces(isolate(), 1); |
| 3320 | DCHECK(AllowThisStubCall(&ces)); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3321 | Call(ces.GetCode(), RelocInfo::DEBUGGER_STATEMENT); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3322 | } |
| 3323 | |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 3324 | |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 3325 | // --------------------------------------------------------------------------- |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3326 | // Exception handling. |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 3327 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3328 | void MacroAssembler::PushStackHandler() { |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 3329 | // Adjust this code if not the case. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3330 | STATIC_ASSERT(StackHandlerConstants::kSize == 1 * kPointerSize); |
Ben Murdoch | 69a99ed | 2011-11-30 16:03:39 +0000 | [diff] [blame] | 3331 | STATIC_ASSERT(StackHandlerConstants::kNextOffset == 0 * kPointerSize); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3332 | |
| 3333 | // Link the current handler as the next handler. |
| 3334 | li(t2, Operand(ExternalReference(Isolate::kHandlerAddress, isolate()))); |
| 3335 | lw(t1, MemOperand(t2)); |
| 3336 | push(t1); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3337 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3338 | // Set this new handler as the current one. |
| 3339 | sw(sp, MemOperand(t2)); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 3340 | } |
| 3341 | |
| 3342 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3343 | void MacroAssembler::PopStackHandler() { |
Ben Murdoch | 69a99ed | 2011-11-30 16:03:39 +0000 | [diff] [blame] | 3344 | STATIC_ASSERT(StackHandlerConstants::kNextOffset == 0); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3345 | pop(a1); |
| 3346 | Addu(sp, sp, Operand(StackHandlerConstants::kSize - kPointerSize)); |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 3347 | li(at, Operand(ExternalReference(Isolate::kHandlerAddress, isolate()))); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3348 | sw(a1, MemOperand(at)); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 3349 | } |
| 3350 | |
| 3351 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3352 | void MacroAssembler::Allocate(int object_size, |
| 3353 | Register result, |
| 3354 | Register scratch1, |
| 3355 | Register scratch2, |
| 3356 | Label* gc_required, |
| 3357 | AllocationFlags flags) { |
| 3358 | DCHECK(object_size <= Page::kMaxRegularHeapObjectSize); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3359 | if (!FLAG_inline_new) { |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3360 | if (emit_debug_code()) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3361 | // Trash the registers to simulate an allocation failure. |
| 3362 | li(result, 0x7091); |
| 3363 | li(scratch1, 0x7191); |
| 3364 | li(scratch2, 0x7291); |
| 3365 | } |
| 3366 | jmp(gc_required); |
| 3367 | return; |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 3368 | } |
| 3369 | |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame^] | 3370 | DCHECK(!AreAliased(result, scratch1, scratch2, t9, at)); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 3371 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3372 | // Make object size into bytes. |
| 3373 | if ((flags & SIZE_IN_WORDS) != 0) { |
| 3374 | object_size *= kPointerSize; |
| 3375 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3376 | DCHECK_EQ(0, object_size & kObjectAlignmentMask); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 3377 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3378 | // Check relative positions of allocation top and limit addresses. |
| 3379 | // ARM adds additional checks to make sure the ldm instruction can be |
| 3380 | // 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] | 3381 | ExternalReference allocation_top = |
| 3382 | AllocationUtils::GetAllocationTopReference(isolate(), flags); |
| 3383 | ExternalReference allocation_limit = |
| 3384 | AllocationUtils::GetAllocationLimitReference(isolate(), flags); |
| 3385 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3386 | intptr_t top = reinterpret_cast<intptr_t>(allocation_top.address()); |
| 3387 | intptr_t limit = reinterpret_cast<intptr_t>(allocation_limit.address()); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3388 | DCHECK((limit - top) == kPointerSize); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3389 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3390 | // Set up allocation top address and allocation limit registers. |
| 3391 | Register top_address = scratch1; |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3392 | // This code stores a temporary value in t9. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3393 | Register alloc_limit = t9; |
| 3394 | Register result_end = scratch2; |
| 3395 | li(top_address, Operand(allocation_top)); |
| 3396 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3397 | if ((flags & RESULT_CONTAINS_TOP) == 0) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3398 | // Load allocation top into result and allocation limit into alloc_limit. |
| 3399 | lw(result, MemOperand(top_address)); |
| 3400 | lw(alloc_limit, MemOperand(top_address, kPointerSize)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3401 | } else { |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3402 | if (emit_debug_code()) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3403 | // Assert that result actually contains top on entry. |
| 3404 | lw(alloc_limit, MemOperand(top_address)); |
| 3405 | Check(eq, kUnexpectedAllocationTop, result, Operand(alloc_limit)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3406 | } |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3407 | // Load allocation limit. Result already contains allocation top. |
| 3408 | lw(alloc_limit, MemOperand(top_address, limit - top)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3409 | } |
| 3410 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3411 | if ((flags & DOUBLE_ALIGNMENT) != 0) { |
| 3412 | // Align the next allocation. Storing the filler map without checking top is |
| 3413 | // 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] | 3414 | DCHECK(kPointerAlignment * 2 == kDoubleAlignment); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3415 | And(result_end, result, Operand(kDoubleAlignmentMask)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3416 | Label aligned; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3417 | Branch(&aligned, eq, result_end, Operand(zero_reg)); |
| 3418 | if ((flags & PRETENURE) != 0) { |
| 3419 | Branch(gc_required, Ugreater_equal, result, Operand(alloc_limit)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3420 | } |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3421 | li(result_end, Operand(isolate()->factory()->one_pointer_filler_map())); |
| 3422 | sw(result_end, MemOperand(result)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3423 | Addu(result, result, Operand(kDoubleSize / 2)); |
| 3424 | bind(&aligned); |
| 3425 | } |
| 3426 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3427 | // Calculate new top and bail out if new space is exhausted. Use result |
| 3428 | // to calculate the new top. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3429 | Addu(result_end, result, Operand(object_size)); |
| 3430 | Branch(gc_required, Ugreater, result_end, Operand(alloc_limit)); |
| 3431 | sw(result_end, MemOperand(top_address)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3432 | |
| 3433 | // Tag object if requested. |
| 3434 | if ((flags & TAG_OBJECT) != 0) { |
| 3435 | Addu(result, result, Operand(kHeapObjectTag)); |
| 3436 | } |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 3437 | } |
| 3438 | |
| 3439 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3440 | void MacroAssembler::Allocate(Register object_size, Register result, |
| 3441 | Register result_end, Register scratch, |
| 3442 | Label* gc_required, AllocationFlags flags) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3443 | if (!FLAG_inline_new) { |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3444 | if (emit_debug_code()) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3445 | // Trash the registers to simulate an allocation failure. |
| 3446 | li(result, 0x7091); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3447 | li(scratch, 0x7191); |
| 3448 | li(result_end, 0x7291); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3449 | } |
| 3450 | jmp(gc_required); |
| 3451 | return; |
| 3452 | } |
| 3453 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3454 | // |object_size| and |result_end| may overlap if the DOUBLE_ALIGNMENT flag |
| 3455 | // is not specified. Other registers must not overlap. |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame^] | 3456 | DCHECK(!AreAliased(object_size, result, scratch, t9, at)); |
| 3457 | DCHECK(!AreAliased(result_end, result, scratch, t9, at)); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3458 | DCHECK((flags & DOUBLE_ALIGNMENT) == 0 || !object_size.is(result_end)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3459 | |
| 3460 | // Check relative positions of allocation top and limit addresses. |
| 3461 | // ARM adds additional checks to make sure the ldm instruction can be |
| 3462 | // 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] | 3463 | ExternalReference allocation_top = |
| 3464 | AllocationUtils::GetAllocationTopReference(isolate(), flags); |
| 3465 | ExternalReference allocation_limit = |
| 3466 | AllocationUtils::GetAllocationLimitReference(isolate(), flags); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3467 | intptr_t top = reinterpret_cast<intptr_t>(allocation_top.address()); |
| 3468 | intptr_t limit = reinterpret_cast<intptr_t>(allocation_limit.address()); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3469 | DCHECK((limit - top) == kPointerSize); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3470 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3471 | // Set up allocation top address and allocation limit registers. |
| 3472 | Register top_address = scratch; |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3473 | // This code stores a temporary value in t9. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3474 | Register alloc_limit = t9; |
| 3475 | li(top_address, Operand(allocation_top)); |
| 3476 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3477 | if ((flags & RESULT_CONTAINS_TOP) == 0) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3478 | // Load allocation top into result and allocation limit into alloc_limit. |
| 3479 | lw(result, MemOperand(top_address)); |
| 3480 | lw(alloc_limit, MemOperand(top_address, kPointerSize)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3481 | } else { |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3482 | if (emit_debug_code()) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3483 | // Assert that result actually contains top on entry. |
| 3484 | lw(alloc_limit, MemOperand(top_address)); |
| 3485 | Check(eq, kUnexpectedAllocationTop, result, Operand(alloc_limit)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3486 | } |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3487 | // Load allocation limit. Result already contains allocation top. |
| 3488 | lw(alloc_limit, MemOperand(top_address, limit - top)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3489 | } |
| 3490 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3491 | if ((flags & DOUBLE_ALIGNMENT) != 0) { |
| 3492 | // Align the next allocation. Storing the filler map without checking top is |
| 3493 | // 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] | 3494 | DCHECK(kPointerAlignment * 2 == kDoubleAlignment); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3495 | And(result_end, result, Operand(kDoubleAlignmentMask)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3496 | Label aligned; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3497 | Branch(&aligned, eq, result_end, Operand(zero_reg)); |
| 3498 | if ((flags & PRETENURE) != 0) { |
| 3499 | Branch(gc_required, Ugreater_equal, result, Operand(alloc_limit)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3500 | } |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3501 | li(result_end, Operand(isolate()->factory()->one_pointer_filler_map())); |
| 3502 | sw(result_end, MemOperand(result)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3503 | Addu(result, result, Operand(kDoubleSize / 2)); |
| 3504 | bind(&aligned); |
| 3505 | } |
| 3506 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3507 | // Calculate new top and bail out if new space is exhausted. Use result |
| 3508 | // to calculate the new top. Object size may be in words so a shift is |
| 3509 | // required to get the number of bytes. |
| 3510 | if ((flags & SIZE_IN_WORDS) != 0) { |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame^] | 3511 | Lsa(result_end, result, object_size, kPointerSizeLog2); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3512 | } else { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3513 | Addu(result_end, result, Operand(object_size)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3514 | } |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3515 | Branch(gc_required, Ugreater, result_end, Operand(alloc_limit)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3516 | |
| 3517 | // Update allocation top. result temporarily holds the new top. |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3518 | if (emit_debug_code()) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3519 | And(alloc_limit, result_end, Operand(kObjectAlignmentMask)); |
| 3520 | Check(eq, kUnalignedAllocationInNewSpace, alloc_limit, Operand(zero_reg)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3521 | } |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3522 | sw(result_end, MemOperand(top_address)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3523 | |
| 3524 | // Tag object if requested. |
| 3525 | if ((flags & TAG_OBJECT) != 0) { |
| 3526 | Addu(result, result, Operand(kHeapObjectTag)); |
| 3527 | } |
| 3528 | } |
| 3529 | |
| 3530 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3531 | void MacroAssembler::AllocateTwoByteString(Register result, |
| 3532 | Register length, |
| 3533 | Register scratch1, |
| 3534 | Register scratch2, |
| 3535 | Register scratch3, |
| 3536 | Label* gc_required) { |
| 3537 | // Calculate the number of bytes needed for the characters in the string while |
| 3538 | // observing object alignment. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3539 | DCHECK((SeqTwoByteString::kHeaderSize & kObjectAlignmentMask) == 0); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3540 | sll(scratch1, length, 1); // Length in bytes, not chars. |
| 3541 | addiu(scratch1, scratch1, |
| 3542 | kObjectAlignmentMask + SeqTwoByteString::kHeaderSize); |
| 3543 | And(scratch1, scratch1, Operand(~kObjectAlignmentMask)); |
| 3544 | |
| 3545 | // Allocate two-byte string in new space. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3546 | Allocate(scratch1, |
| 3547 | result, |
| 3548 | scratch2, |
| 3549 | scratch3, |
| 3550 | gc_required, |
| 3551 | TAG_OBJECT); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3552 | |
| 3553 | // Set the map, length and hash field. |
| 3554 | InitializeNewString(result, |
| 3555 | length, |
| 3556 | Heap::kStringMapRootIndex, |
| 3557 | scratch1, |
| 3558 | scratch2); |
| 3559 | } |
| 3560 | |
| 3561 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3562 | void MacroAssembler::AllocateOneByteString(Register result, Register length, |
| 3563 | Register scratch1, Register scratch2, |
| 3564 | Register scratch3, |
| 3565 | Label* gc_required) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3566 | // Calculate the number of bytes needed for the characters in the string |
| 3567 | // while observing object alignment. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3568 | DCHECK((SeqOneByteString::kHeaderSize & kObjectAlignmentMask) == 0); |
| 3569 | DCHECK(kCharSize == 1); |
| 3570 | addiu(scratch1, length, kObjectAlignmentMask + SeqOneByteString::kHeaderSize); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3571 | And(scratch1, scratch1, Operand(~kObjectAlignmentMask)); |
| 3572 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3573 | // Allocate one-byte string in new space. |
| 3574 | Allocate(scratch1, |
| 3575 | result, |
| 3576 | scratch2, |
| 3577 | scratch3, |
| 3578 | gc_required, |
| 3579 | TAG_OBJECT); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3580 | |
| 3581 | // Set the map, length and hash field. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3582 | InitializeNewString(result, length, Heap::kOneByteStringMapRootIndex, |
| 3583 | scratch1, scratch2); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3584 | } |
| 3585 | |
| 3586 | |
| 3587 | void MacroAssembler::AllocateTwoByteConsString(Register result, |
| 3588 | Register length, |
| 3589 | Register scratch1, |
| 3590 | Register scratch2, |
| 3591 | Label* gc_required) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3592 | Allocate(ConsString::kSize, result, scratch1, scratch2, gc_required, |
| 3593 | TAG_OBJECT); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3594 | InitializeNewString(result, |
| 3595 | length, |
| 3596 | Heap::kConsStringMapRootIndex, |
| 3597 | scratch1, |
| 3598 | scratch2); |
| 3599 | } |
| 3600 | |
| 3601 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3602 | void MacroAssembler::AllocateOneByteConsString(Register result, Register length, |
| 3603 | Register scratch1, |
| 3604 | Register scratch2, |
| 3605 | Label* gc_required) { |
| 3606 | Allocate(ConsString::kSize, |
| 3607 | result, |
| 3608 | scratch1, |
| 3609 | scratch2, |
| 3610 | gc_required, |
| 3611 | TAG_OBJECT); |
| 3612 | |
| 3613 | InitializeNewString(result, length, Heap::kConsOneByteStringMapRootIndex, |
| 3614 | scratch1, scratch2); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3615 | } |
| 3616 | |
| 3617 | |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 3618 | void MacroAssembler::AllocateTwoByteSlicedString(Register result, |
| 3619 | Register length, |
| 3620 | Register scratch1, |
| 3621 | Register scratch2, |
| 3622 | Label* gc_required) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3623 | Allocate(SlicedString::kSize, result, scratch1, scratch2, gc_required, |
| 3624 | TAG_OBJECT); |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 3625 | |
| 3626 | InitializeNewString(result, |
| 3627 | length, |
| 3628 | Heap::kSlicedStringMapRootIndex, |
| 3629 | scratch1, |
| 3630 | scratch2); |
| 3631 | } |
| 3632 | |
| 3633 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3634 | void MacroAssembler::AllocateOneByteSlicedString(Register result, |
| 3635 | Register length, |
| 3636 | Register scratch1, |
| 3637 | Register scratch2, |
| 3638 | Label* gc_required) { |
| 3639 | Allocate(SlicedString::kSize, result, scratch1, scratch2, gc_required, |
| 3640 | TAG_OBJECT); |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 3641 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3642 | InitializeNewString(result, length, Heap::kSlicedOneByteStringMapRootIndex, |
| 3643 | scratch1, scratch2); |
| 3644 | } |
| 3645 | |
| 3646 | |
| 3647 | void MacroAssembler::JumpIfNotUniqueNameInstanceType(Register reg, |
| 3648 | Label* not_unique_name) { |
| 3649 | STATIC_ASSERT(kInternalizedTag == 0 && kStringTag == 0); |
| 3650 | Label succeed; |
| 3651 | And(at, reg, Operand(kIsNotStringMask | kIsNotInternalizedMask)); |
| 3652 | Branch(&succeed, eq, at, Operand(zero_reg)); |
| 3653 | Branch(not_unique_name, ne, reg, Operand(SYMBOL_TYPE)); |
| 3654 | |
| 3655 | bind(&succeed); |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 3656 | } |
| 3657 | |
| 3658 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3659 | // Allocates a heap number or jumps to the label if the young space is full and |
| 3660 | // a scavenge is needed. |
| 3661 | void MacroAssembler::AllocateHeapNumber(Register result, |
| 3662 | Register scratch1, |
| 3663 | Register scratch2, |
| 3664 | Register heap_number_map, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3665 | Label* need_gc, |
| 3666 | TaggingMode tagging_mode, |
| 3667 | MutableMode mode) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3668 | // Allocate an object in the heap for the heap number and tag it as a heap |
| 3669 | // object. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3670 | Allocate(HeapNumber::kSize, result, scratch1, scratch2, need_gc, |
| 3671 | tagging_mode == TAG_RESULT ? TAG_OBJECT : NO_ALLOCATION_FLAGS); |
| 3672 | |
| 3673 | Heap::RootListIndex map_index = mode == MUTABLE |
| 3674 | ? Heap::kMutableHeapNumberMapRootIndex |
| 3675 | : Heap::kHeapNumberMapRootIndex; |
| 3676 | AssertIsRoot(heap_number_map, map_index); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3677 | |
| 3678 | // Store heap number map in the allocated object. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3679 | if (tagging_mode == TAG_RESULT) { |
| 3680 | sw(heap_number_map, FieldMemOperand(result, HeapObject::kMapOffset)); |
| 3681 | } else { |
| 3682 | sw(heap_number_map, MemOperand(result, HeapObject::kMapOffset)); |
| 3683 | } |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3684 | } |
| 3685 | |
| 3686 | |
| 3687 | void MacroAssembler::AllocateHeapNumberWithValue(Register result, |
| 3688 | FPURegister value, |
| 3689 | Register scratch1, |
| 3690 | Register scratch2, |
| 3691 | Label* gc_required) { |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 3692 | LoadRoot(t8, Heap::kHeapNumberMapRootIndex); |
| 3693 | AllocateHeapNumber(result, scratch1, scratch2, t8, gc_required); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3694 | sdc1(value, FieldMemOperand(result, HeapNumber::kValueOffset)); |
| 3695 | } |
| 3696 | |
| 3697 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3698 | void MacroAssembler::AllocateJSValue(Register result, Register constructor, |
| 3699 | Register value, Register scratch1, |
| 3700 | Register scratch2, Label* gc_required) { |
| 3701 | DCHECK(!result.is(constructor)); |
| 3702 | DCHECK(!result.is(scratch1)); |
| 3703 | DCHECK(!result.is(scratch2)); |
| 3704 | DCHECK(!result.is(value)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3705 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3706 | // Allocate JSValue in new space. |
| 3707 | Allocate(JSValue::kSize, result, scratch1, scratch2, gc_required, TAG_OBJECT); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3708 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3709 | // Initialize the JSValue. |
| 3710 | LoadGlobalFunctionInitialMap(constructor, scratch1, scratch2); |
| 3711 | sw(scratch1, FieldMemOperand(result, HeapObject::kMapOffset)); |
| 3712 | LoadRoot(scratch1, Heap::kEmptyFixedArrayRootIndex); |
| 3713 | sw(scratch1, FieldMemOperand(result, JSObject::kPropertiesOffset)); |
| 3714 | sw(scratch1, FieldMemOperand(result, JSObject::kElementsOffset)); |
| 3715 | sw(value, FieldMemOperand(result, JSValue::kValueOffset)); |
| 3716 | STATIC_ASSERT(JSValue::kSize == 4 * kPointerSize); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3717 | } |
| 3718 | |
| 3719 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3720 | void MacroAssembler::CopyBytes(Register src, |
| 3721 | Register dst, |
| 3722 | Register length, |
| 3723 | Register scratch) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3724 | Label align_loop_1, word_loop, byte_loop, byte_loop_1, done; |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3725 | |
| 3726 | // Align src before copying in word size chunks. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3727 | Branch(&byte_loop, le, length, Operand(kPointerSize)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3728 | bind(&align_loop_1); |
| 3729 | And(scratch, src, kPointerSize - 1); |
| 3730 | Branch(&word_loop, eq, scratch, Operand(zero_reg)); |
| 3731 | lbu(scratch, MemOperand(src)); |
| 3732 | Addu(src, src, 1); |
| 3733 | sb(scratch, MemOperand(dst)); |
| 3734 | Addu(dst, dst, 1); |
| 3735 | Subu(length, length, Operand(1)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3736 | Branch(&align_loop_1, ne, length, Operand(zero_reg)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3737 | |
| 3738 | // Copy bytes in word size chunks. |
| 3739 | bind(&word_loop); |
| 3740 | if (emit_debug_code()) { |
| 3741 | And(scratch, src, kPointerSize - 1); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3742 | Assert(eq, kExpectingAlignmentForCopyBytes, |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3743 | scratch, Operand(zero_reg)); |
| 3744 | } |
| 3745 | Branch(&byte_loop, lt, length, Operand(kPointerSize)); |
| 3746 | lw(scratch, MemOperand(src)); |
| 3747 | Addu(src, src, kPointerSize); |
| 3748 | |
| 3749 | // TODO(kalmard) check if this can be optimized to use sw in most cases. |
| 3750 | // Can't use unaligned access - copy byte by byte. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3751 | if (kArchEndian == kLittle) { |
| 3752 | sb(scratch, MemOperand(dst, 0)); |
| 3753 | srl(scratch, scratch, 8); |
| 3754 | sb(scratch, MemOperand(dst, 1)); |
| 3755 | srl(scratch, scratch, 8); |
| 3756 | sb(scratch, MemOperand(dst, 2)); |
| 3757 | srl(scratch, scratch, 8); |
| 3758 | sb(scratch, MemOperand(dst, 3)); |
| 3759 | } else { |
| 3760 | sb(scratch, MemOperand(dst, 3)); |
| 3761 | srl(scratch, scratch, 8); |
| 3762 | sb(scratch, MemOperand(dst, 2)); |
| 3763 | srl(scratch, scratch, 8); |
| 3764 | sb(scratch, MemOperand(dst, 1)); |
| 3765 | srl(scratch, scratch, 8); |
| 3766 | sb(scratch, MemOperand(dst, 0)); |
| 3767 | } |
| 3768 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3769 | Addu(dst, dst, 4); |
| 3770 | |
| 3771 | Subu(length, length, Operand(kPointerSize)); |
| 3772 | Branch(&word_loop); |
| 3773 | |
| 3774 | // Copy the last bytes if any left. |
| 3775 | bind(&byte_loop); |
| 3776 | Branch(&done, eq, length, Operand(zero_reg)); |
| 3777 | bind(&byte_loop_1); |
| 3778 | lbu(scratch, MemOperand(src)); |
| 3779 | Addu(src, src, 1); |
| 3780 | sb(scratch, MemOperand(dst)); |
| 3781 | Addu(dst, dst, 1); |
| 3782 | Subu(length, length, Operand(1)); |
| 3783 | Branch(&byte_loop_1, ne, length, Operand(zero_reg)); |
| 3784 | bind(&done); |
| 3785 | } |
| 3786 | |
| 3787 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3788 | void MacroAssembler::InitializeFieldsWithFiller(Register current_address, |
| 3789 | Register end_address, |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3790 | Register filler) { |
| 3791 | Label loop, entry; |
| 3792 | Branch(&entry); |
| 3793 | bind(&loop); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3794 | sw(filler, MemOperand(current_address)); |
| 3795 | Addu(current_address, current_address, kPointerSize); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3796 | bind(&entry); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3797 | Branch(&loop, ult, current_address, Operand(end_address)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3798 | } |
| 3799 | |
| 3800 | |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 3801 | void MacroAssembler::CheckFastElements(Register map, |
| 3802 | Register scratch, |
| 3803 | Label* fail) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3804 | STATIC_ASSERT(FAST_SMI_ELEMENTS == 0); |
| 3805 | STATIC_ASSERT(FAST_HOLEY_SMI_ELEMENTS == 1); |
| 3806 | STATIC_ASSERT(FAST_ELEMENTS == 2); |
| 3807 | STATIC_ASSERT(FAST_HOLEY_ELEMENTS == 3); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 3808 | lbu(scratch, FieldMemOperand(map, Map::kBitField2Offset)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3809 | Branch(fail, hi, scratch, |
| 3810 | Operand(Map::kMaximumBitField2FastHoleyElementValue)); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 3811 | } |
| 3812 | |
| 3813 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3814 | void MacroAssembler::CheckFastObjectElements(Register map, |
| 3815 | Register scratch, |
| 3816 | Label* fail) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3817 | STATIC_ASSERT(FAST_SMI_ELEMENTS == 0); |
| 3818 | STATIC_ASSERT(FAST_HOLEY_SMI_ELEMENTS == 1); |
| 3819 | STATIC_ASSERT(FAST_ELEMENTS == 2); |
| 3820 | STATIC_ASSERT(FAST_HOLEY_ELEMENTS == 3); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3821 | lbu(scratch, FieldMemOperand(map, Map::kBitField2Offset)); |
| 3822 | Branch(fail, ls, scratch, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3823 | Operand(Map::kMaximumBitField2FastHoleySmiElementValue)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3824 | Branch(fail, hi, scratch, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3825 | Operand(Map::kMaximumBitField2FastHoleyElementValue)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3826 | } |
| 3827 | |
| 3828 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3829 | void MacroAssembler::CheckFastSmiElements(Register map, |
| 3830 | Register scratch, |
| 3831 | Label* fail) { |
| 3832 | STATIC_ASSERT(FAST_SMI_ELEMENTS == 0); |
| 3833 | STATIC_ASSERT(FAST_HOLEY_SMI_ELEMENTS == 1); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3834 | lbu(scratch, FieldMemOperand(map, Map::kBitField2Offset)); |
| 3835 | Branch(fail, hi, scratch, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3836 | Operand(Map::kMaximumBitField2FastHoleySmiElementValue)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3837 | } |
| 3838 | |
| 3839 | |
| 3840 | void MacroAssembler::StoreNumberToDoubleElements(Register value_reg, |
| 3841 | Register key_reg, |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3842 | Register elements_reg, |
| 3843 | Register scratch1, |
| 3844 | Register scratch2, |
| 3845 | Register scratch3, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3846 | Label* fail, |
| 3847 | int elements_offset) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3848 | DCHECK(!AreAliased(value_reg, key_reg, elements_reg, scratch1, scratch2, |
| 3849 | scratch3)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3850 | Label smi_value, maybe_nan, have_double_value, is_nan, done; |
| 3851 | Register mantissa_reg = scratch2; |
| 3852 | Register exponent_reg = scratch3; |
| 3853 | |
| 3854 | // Handle smi values specially. |
| 3855 | JumpIfSmi(value_reg, &smi_value); |
| 3856 | |
| 3857 | // Ensure that the object is a heap number |
| 3858 | CheckMap(value_reg, |
| 3859 | scratch1, |
| 3860 | Heap::kHeapNumberMapRootIndex, |
| 3861 | fail, |
| 3862 | DONT_DO_SMI_CHECK); |
| 3863 | |
| 3864 | // Check for nan: all NaN values have a value greater (signed) than 0x7ff00000 |
| 3865 | // in the exponent. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3866 | li(scratch1, Operand(kHoleNanUpper32 & HeapNumber::kExponentMask)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3867 | lw(exponent_reg, FieldMemOperand(value_reg, HeapNumber::kExponentOffset)); |
| 3868 | Branch(&maybe_nan, ge, exponent_reg, Operand(scratch1)); |
| 3869 | |
| 3870 | lw(mantissa_reg, FieldMemOperand(value_reg, HeapNumber::kMantissaOffset)); |
| 3871 | |
| 3872 | bind(&have_double_value); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame^] | 3873 | Lsa(scratch1, elements_reg, key_reg, kDoubleSizeLog2 - kSmiTagSize); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3874 | sw(mantissa_reg, |
| 3875 | FieldMemOperand(scratch1, FixedDoubleArray::kHeaderSize - elements_offset |
| 3876 | + kHoleNanLower32Offset)); |
| 3877 | sw(exponent_reg, |
| 3878 | FieldMemOperand(scratch1, FixedDoubleArray::kHeaderSize - elements_offset |
| 3879 | + kHoleNanUpper32Offset)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3880 | jmp(&done); |
| 3881 | |
| 3882 | bind(&maybe_nan); |
| 3883 | // Could be NaN or Infinity. If fraction is not zero, it's NaN, otherwise |
| 3884 | // it's an Infinity, and the non-NaN code path applies. |
| 3885 | Branch(&is_nan, gt, exponent_reg, Operand(scratch1)); |
| 3886 | lw(mantissa_reg, FieldMemOperand(value_reg, HeapNumber::kMantissaOffset)); |
| 3887 | Branch(&have_double_value, eq, mantissa_reg, Operand(zero_reg)); |
| 3888 | bind(&is_nan); |
| 3889 | // Load canonical NaN for storing into the double array. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3890 | LoadRoot(at, Heap::kNanValueRootIndex); |
| 3891 | lw(mantissa_reg, FieldMemOperand(at, HeapNumber::kMantissaOffset)); |
| 3892 | lw(exponent_reg, FieldMemOperand(at, HeapNumber::kExponentOffset)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3893 | jmp(&have_double_value); |
| 3894 | |
| 3895 | bind(&smi_value); |
| 3896 | Addu(scratch1, elements_reg, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3897 | Operand(FixedDoubleArray::kHeaderSize - kHeapObjectTag - |
| 3898 | elements_offset)); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame^] | 3899 | Lsa(scratch1, scratch1, key_reg, kDoubleSizeLog2 - kSmiTagSize); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3900 | // scratch1 is now effective address of the double element |
| 3901 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3902 | Register untagged_value = scratch2; |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3903 | SmiUntag(untagged_value, value_reg); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3904 | mtc1(untagged_value, f2); |
| 3905 | cvt_d_w(f0, f2); |
| 3906 | sdc1(f0, MemOperand(scratch1, 0)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3907 | bind(&done); |
| 3908 | } |
| 3909 | |
| 3910 | |
| 3911 | void MacroAssembler::CompareMapAndBranch(Register obj, |
| 3912 | Register scratch, |
| 3913 | Handle<Map> map, |
| 3914 | Label* early_success, |
| 3915 | Condition cond, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3916 | Label* branch_to) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3917 | lw(scratch, FieldMemOperand(obj, HeapObject::kMapOffset)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3918 | CompareMapAndBranch(scratch, map, early_success, cond, branch_to); |
| 3919 | } |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3920 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3921 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3922 | void MacroAssembler::CompareMapAndBranch(Register obj_map, |
| 3923 | Handle<Map> map, |
| 3924 | Label* early_success, |
| 3925 | Condition cond, |
| 3926 | Label* branch_to) { |
| 3927 | Branch(branch_to, cond, obj_map, Operand(map)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3928 | } |
| 3929 | |
| 3930 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3931 | void MacroAssembler::CheckMap(Register obj, |
| 3932 | Register scratch, |
| 3933 | Handle<Map> map, |
| 3934 | Label* fail, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3935 | SmiCheckType smi_check_type) { |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3936 | if (smi_check_type == DO_SMI_CHECK) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3937 | JumpIfSmi(obj, fail); |
| 3938 | } |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3939 | Label success; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3940 | CompareMapAndBranch(obj, scratch, map, &success, ne, fail); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3941 | bind(&success); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3942 | } |
| 3943 | |
| 3944 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 3945 | void MacroAssembler::DispatchWeakMap(Register obj, Register scratch1, |
| 3946 | Register scratch2, Handle<WeakCell> cell, |
| 3947 | Handle<Code> success, |
| 3948 | SmiCheckType smi_check_type) { |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3949 | Label fail; |
| 3950 | if (smi_check_type == DO_SMI_CHECK) { |
| 3951 | JumpIfSmi(obj, &fail); |
| 3952 | } |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 3953 | lw(scratch1, FieldMemOperand(obj, HeapObject::kMapOffset)); |
| 3954 | GetWeakValue(scratch2, cell); |
| 3955 | Jump(success, RelocInfo::CODE_TARGET, eq, scratch1, Operand(scratch2)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3956 | bind(&fail); |
| 3957 | } |
| 3958 | |
| 3959 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3960 | void MacroAssembler::CheckMap(Register obj, |
| 3961 | Register scratch, |
| 3962 | Heap::RootListIndex index, |
| 3963 | Label* fail, |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3964 | SmiCheckType smi_check_type) { |
| 3965 | if (smi_check_type == DO_SMI_CHECK) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3966 | JumpIfSmi(obj, fail); |
| 3967 | } |
| 3968 | lw(scratch, FieldMemOperand(obj, HeapObject::kMapOffset)); |
| 3969 | LoadRoot(at, index); |
| 3970 | Branch(fail, ne, scratch, Operand(at)); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 3971 | } |
| 3972 | |
| 3973 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 3974 | void MacroAssembler::GetWeakValue(Register value, Handle<WeakCell> cell) { |
| 3975 | li(value, Operand(cell)); |
| 3976 | lw(value, FieldMemOperand(value, WeakCell::kValueOffset)); |
| 3977 | } |
| 3978 | |
| 3979 | |
| 3980 | void MacroAssembler::LoadWeakValue(Register value, Handle<WeakCell> cell, |
| 3981 | Label* miss) { |
| 3982 | GetWeakValue(value, cell); |
| 3983 | JumpIfSmi(value, miss); |
| 3984 | } |
| 3985 | |
| 3986 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3987 | void MacroAssembler::MovFromFloatResult(DoubleRegister dst) { |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3988 | if (IsMipsSoftFloatABI) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3989 | if (kArchEndian == kLittle) { |
| 3990 | Move(dst, v0, v1); |
| 3991 | } else { |
| 3992 | Move(dst, v1, v0); |
| 3993 | } |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3994 | } else { |
| 3995 | Move(dst, f0); // Reg f0 is o32 ABI FP return value. |
| 3996 | } |
| 3997 | } |
| 3998 | |
| 3999 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4000 | void MacroAssembler::MovFromFloatParameter(DoubleRegister dst) { |
| 4001 | if (IsMipsSoftFloatABI) { |
| 4002 | if (kArchEndian == kLittle) { |
| 4003 | Move(dst, a0, a1); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4004 | } else { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4005 | Move(dst, a1, a0); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4006 | } |
| 4007 | } else { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4008 | Move(dst, f12); // Reg f12 is o32 ABI FP first argument value. |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4009 | } |
| 4010 | } |
| 4011 | |
| 4012 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4013 | void MacroAssembler::MovToFloatParameter(DoubleRegister src) { |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4014 | if (!IsMipsSoftFloatABI) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4015 | Move(f12, src); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4016 | } else { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4017 | if (kArchEndian == kLittle) { |
| 4018 | Move(a0, a1, src); |
| 4019 | } else { |
| 4020 | Move(a1, a0, src); |
| 4021 | } |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4022 | } |
| 4023 | } |
| 4024 | |
| 4025 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4026 | void MacroAssembler::MovToFloatResult(DoubleRegister src) { |
| 4027 | if (!IsMipsSoftFloatABI) { |
| 4028 | Move(f0, src); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4029 | } else { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4030 | if (kArchEndian == kLittle) { |
| 4031 | Move(v0, v1, src); |
| 4032 | } else { |
| 4033 | Move(v1, v0, src); |
| 4034 | } |
| 4035 | } |
| 4036 | } |
| 4037 | |
| 4038 | |
| 4039 | void MacroAssembler::MovToFloatParameters(DoubleRegister src1, |
| 4040 | DoubleRegister src2) { |
| 4041 | if (!IsMipsSoftFloatABI) { |
| 4042 | if (src2.is(f12)) { |
| 4043 | DCHECK(!src1.is(f14)); |
| 4044 | Move(f14, src2); |
| 4045 | Move(f12, src1); |
| 4046 | } else { |
| 4047 | Move(f12, src1); |
| 4048 | Move(f14, src2); |
| 4049 | } |
| 4050 | } else { |
| 4051 | if (kArchEndian == kLittle) { |
| 4052 | Move(a0, a1, src1); |
| 4053 | Move(a2, a3, src2); |
| 4054 | } else { |
| 4055 | Move(a1, a0, src1); |
| 4056 | Move(a3, a2, src2); |
| 4057 | } |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4058 | } |
| 4059 | } |
| 4060 | |
| 4061 | |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 4062 | // ----------------------------------------------------------------------------- |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4063 | // JavaScript invokes. |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 4064 | |
| 4065 | void MacroAssembler::InvokePrologue(const ParameterCount& expected, |
| 4066 | const ParameterCount& actual, |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 4067 | Label* done, |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4068 | bool* definitely_mismatches, |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4069 | InvokeFlag flag, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4070 | const CallWrapper& call_wrapper) { |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 4071 | bool definitely_matches = false; |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4072 | *definitely_mismatches = false; |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 4073 | Label regular_invoke; |
| 4074 | |
| 4075 | // Check whether the expected and actual arguments count match. If not, |
| 4076 | // setup registers according to contract with ArgumentsAdaptorTrampoline: |
| 4077 | // a0: actual arguments count |
| 4078 | // a1: function (passed through to callee) |
| 4079 | // a2: expected arguments count |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 4080 | |
| 4081 | // The code below is made a lot easier because the calling code already sets |
| 4082 | // up actual and expected registers according to the contract if values are |
| 4083 | // passed in registers. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4084 | DCHECK(actual.is_immediate() || actual.reg().is(a0)); |
| 4085 | DCHECK(expected.is_immediate() || expected.reg().is(a2)); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 4086 | |
| 4087 | if (expected.is_immediate()) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4088 | DCHECK(actual.is_immediate()); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4089 | li(a0, Operand(actual.immediate())); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 4090 | if (expected.immediate() == actual.immediate()) { |
| 4091 | definitely_matches = true; |
| 4092 | } else { |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 4093 | const int sentinel = SharedFunctionInfo::kDontAdaptArgumentsSentinel; |
| 4094 | if (expected.immediate() == sentinel) { |
| 4095 | // Don't worry about adapting arguments for builtins that |
| 4096 | // don't want that done. Skip adaption code by making it look |
| 4097 | // like we have a match between expected and actual number of |
| 4098 | // arguments. |
| 4099 | definitely_matches = true; |
| 4100 | } else { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4101 | *definitely_mismatches = true; |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 4102 | li(a2, Operand(expected.immediate())); |
| 4103 | } |
| 4104 | } |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4105 | } else if (actual.is_immediate()) { |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4106 | li(a0, Operand(actual.immediate())); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4107 | Branch(®ular_invoke, eq, expected.reg(), Operand(a0)); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 4108 | } else { |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4109 | Branch(®ular_invoke, eq, expected.reg(), Operand(actual.reg())); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 4110 | } |
| 4111 | |
| 4112 | if (!definitely_matches) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4113 | Handle<Code> adaptor = |
| 4114 | isolate()->builtins()->ArgumentsAdaptorTrampoline(); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 4115 | if (flag == CALL_FUNCTION) { |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 4116 | call_wrapper.BeforeCall(CallSize(adaptor)); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 4117 | Call(adaptor); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4118 | call_wrapper.AfterCall(); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4119 | if (!*definitely_mismatches) { |
| 4120 | Branch(done); |
| 4121 | } |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 4122 | } else { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4123 | Jump(adaptor, RelocInfo::CODE_TARGET); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 4124 | } |
| 4125 | bind(®ular_invoke); |
| 4126 | } |
| 4127 | } |
| 4128 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4129 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4130 | void MacroAssembler::FloodFunctionIfStepping(Register fun, Register new_target, |
| 4131 | const ParameterCount& expected, |
| 4132 | const ParameterCount& actual) { |
| 4133 | Label skip_flooding; |
| 4134 | ExternalReference step_in_enabled = |
| 4135 | ExternalReference::debug_step_in_enabled_address(isolate()); |
| 4136 | li(t0, Operand(step_in_enabled)); |
| 4137 | lb(t0, MemOperand(t0)); |
| 4138 | Branch(&skip_flooding, eq, t0, Operand(zero_reg)); |
| 4139 | { |
| 4140 | FrameScope frame(this, |
| 4141 | has_frame() ? StackFrame::NONE : StackFrame::INTERNAL); |
| 4142 | if (expected.is_reg()) { |
| 4143 | SmiTag(expected.reg()); |
| 4144 | Push(expected.reg()); |
| 4145 | } |
| 4146 | if (actual.is_reg()) { |
| 4147 | SmiTag(actual.reg()); |
| 4148 | Push(actual.reg()); |
| 4149 | } |
| 4150 | if (new_target.is_valid()) { |
| 4151 | Push(new_target); |
| 4152 | } |
| 4153 | Push(fun); |
| 4154 | Push(fun); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame^] | 4155 | CallRuntime(Runtime::kDebugPrepareStepInIfStepping); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4156 | Pop(fun); |
| 4157 | if (new_target.is_valid()) { |
| 4158 | Pop(new_target); |
| 4159 | } |
| 4160 | if (actual.is_reg()) { |
| 4161 | Pop(actual.reg()); |
| 4162 | SmiUntag(actual.reg()); |
| 4163 | } |
| 4164 | if (expected.is_reg()) { |
| 4165 | Pop(expected.reg()); |
| 4166 | SmiUntag(expected.reg()); |
| 4167 | } |
| 4168 | } |
| 4169 | bind(&skip_flooding); |
| 4170 | } |
| 4171 | |
| 4172 | |
| 4173 | void MacroAssembler::InvokeFunctionCode(Register function, Register new_target, |
| 4174 | const ParameterCount& expected, |
| 4175 | const ParameterCount& actual, |
| 4176 | InvokeFlag flag, |
| 4177 | const CallWrapper& call_wrapper) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4178 | // You can't call a function without a valid frame. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4179 | DCHECK(flag == JUMP_FUNCTION || has_frame()); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4180 | DCHECK(function.is(a1)); |
| 4181 | DCHECK_IMPLIES(new_target.is_valid(), new_target.is(a3)); |
| 4182 | |
| 4183 | if (call_wrapper.NeedsDebugStepCheck()) { |
| 4184 | FloodFunctionIfStepping(function, new_target, expected, actual); |
| 4185 | } |
| 4186 | |
| 4187 | // Clear the new.target register if not given. |
| 4188 | if (!new_target.is_valid()) { |
| 4189 | LoadRoot(a3, Heap::kUndefinedValueRootIndex); |
| 4190 | } |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4191 | |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 4192 | Label done; |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4193 | bool definitely_mismatches = false; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4194 | InvokePrologue(expected, actual, &done, &definitely_mismatches, flag, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4195 | call_wrapper); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4196 | if (!definitely_mismatches) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4197 | // We call indirectly through the code field in the function to |
| 4198 | // allow recompilation to take effect without changing any of the |
| 4199 | // call sites. |
| 4200 | Register code = t0; |
| 4201 | lw(code, FieldMemOperand(function, JSFunction::kCodeEntryOffset)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4202 | if (flag == CALL_FUNCTION) { |
| 4203 | call_wrapper.BeforeCall(CallSize(code)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4204 | Call(code); |
| 4205 | call_wrapper.AfterCall(); |
| 4206 | } else { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4207 | DCHECK(flag == JUMP_FUNCTION); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4208 | Jump(code); |
| 4209 | } |
| 4210 | // Continue here if InvokePrologue does handle the invocation due to |
| 4211 | // mismatched parameter counts. |
| 4212 | bind(&done); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 4213 | } |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 4214 | } |
| 4215 | |
| 4216 | |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 4217 | void MacroAssembler::InvokeFunction(Register function, |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4218 | Register new_target, |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 4219 | const ParameterCount& actual, |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4220 | InvokeFlag flag, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4221 | const CallWrapper& call_wrapper) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4222 | // You can't call a function without a valid frame. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4223 | DCHECK(flag == JUMP_FUNCTION || has_frame()); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4224 | |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 4225 | // Contract with called JS functions requires that function is passed in a1. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4226 | DCHECK(function.is(a1)); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 4227 | Register expected_reg = a2; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4228 | Register temp_reg = t0; |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 4229 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4230 | lw(temp_reg, FieldMemOperand(a1, JSFunction::kSharedFunctionInfoOffset)); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 4231 | lw(cp, FieldMemOperand(a1, JSFunction::kContextOffset)); |
| 4232 | lw(expected_reg, |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4233 | FieldMemOperand(temp_reg, |
| 4234 | SharedFunctionInfo::kFormalParameterCountOffset)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4235 | sra(expected_reg, expected_reg, kSmiTagSize); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 4236 | |
| 4237 | ParameterCount expected(expected_reg); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4238 | InvokeFunctionCode(function, new_target, expected, actual, flag, |
| 4239 | call_wrapper); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4240 | } |
| 4241 | |
| 4242 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4243 | void MacroAssembler::InvokeFunction(Register function, |
| 4244 | const ParameterCount& expected, |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4245 | const ParameterCount& actual, |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 4246 | InvokeFlag flag, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4247 | const CallWrapper& call_wrapper) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4248 | // You can't call a function without a valid frame. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4249 | DCHECK(flag == JUMP_FUNCTION || has_frame()); |
| 4250 | |
| 4251 | // Contract with called JS functions requires that function is passed in a1. |
| 4252 | DCHECK(function.is(a1)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4253 | |
| 4254 | // Get the function and setup the context. |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4255 | lw(cp, FieldMemOperand(a1, JSFunction::kContextOffset)); |
| 4256 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4257 | InvokeFunctionCode(a1, no_reg, expected, actual, flag, call_wrapper); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4258 | } |
| 4259 | |
| 4260 | |
| 4261 | void MacroAssembler::InvokeFunction(Handle<JSFunction> function, |
| 4262 | const ParameterCount& expected, |
| 4263 | const ParameterCount& actual, |
| 4264 | InvokeFlag flag, |
| 4265 | const CallWrapper& call_wrapper) { |
| 4266 | li(a1, function); |
| 4267 | InvokeFunction(a1, expected, actual, flag, call_wrapper); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4268 | } |
| 4269 | |
| 4270 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4271 | void MacroAssembler::IsObjectJSStringType(Register object, |
| 4272 | Register scratch, |
| 4273 | Label* fail) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4274 | DCHECK(kNotStringTag != 0); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4275 | |
| 4276 | lw(scratch, FieldMemOperand(object, HeapObject::kMapOffset)); |
| 4277 | lbu(scratch, FieldMemOperand(scratch, Map::kInstanceTypeOffset)); |
| 4278 | And(scratch, scratch, Operand(kIsNotStringMask)); |
| 4279 | Branch(fail, ne, scratch, Operand(zero_reg)); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 4280 | } |
| 4281 | |
| 4282 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4283 | void MacroAssembler::IsObjectNameType(Register object, |
| 4284 | Register scratch, |
| 4285 | Label* fail) { |
| 4286 | lw(scratch, FieldMemOperand(object, HeapObject::kMapOffset)); |
| 4287 | lbu(scratch, FieldMemOperand(scratch, Map::kInstanceTypeOffset)); |
| 4288 | Branch(fail, hi, scratch, Operand(LAST_NAME_TYPE)); |
| 4289 | } |
| 4290 | |
| 4291 | |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 4292 | // --------------------------------------------------------------------------- |
| 4293 | // Support functions. |
| 4294 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4295 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4296 | void MacroAssembler::GetMapConstructor(Register result, Register map, |
| 4297 | Register temp, Register temp2) { |
| 4298 | Label done, loop; |
| 4299 | lw(result, FieldMemOperand(map, Map::kConstructorOrBackPointerOffset)); |
| 4300 | bind(&loop); |
| 4301 | JumpIfSmi(result, &done); |
| 4302 | GetObjectType(result, temp, temp2); |
| 4303 | Branch(&done, ne, temp2, Operand(MAP_TYPE)); |
| 4304 | lw(result, FieldMemOperand(result, Map::kConstructorOrBackPointerOffset)); |
| 4305 | Branch(&loop); |
| 4306 | bind(&done); |
| 4307 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4308 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4309 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4310 | void MacroAssembler::TryGetFunctionPrototype(Register function, Register result, |
| 4311 | Register scratch, Label* miss) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4312 | // Get the prototype or initial map from the function. |
| 4313 | lw(result, |
| 4314 | FieldMemOperand(function, JSFunction::kPrototypeOrInitialMapOffset)); |
| 4315 | |
| 4316 | // If the prototype or initial map is the hole, don't return it and |
| 4317 | // simply miss the cache instead. This will allow us to allocate a |
| 4318 | // prototype object on-demand in the runtime system. |
| 4319 | LoadRoot(t8, Heap::kTheHoleValueRootIndex); |
| 4320 | Branch(miss, eq, result, Operand(t8)); |
| 4321 | |
| 4322 | // If the function does not have an initial map, we're done. |
| 4323 | Label done; |
| 4324 | GetObjectType(result, scratch, scratch); |
| 4325 | Branch(&done, ne, scratch, Operand(MAP_TYPE)); |
| 4326 | |
| 4327 | // Get the prototype from the initial map. |
| 4328 | lw(result, FieldMemOperand(result, Map::kPrototypeOffset)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4329 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4330 | // All done. |
| 4331 | bind(&done); |
| 4332 | } |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 4333 | |
| 4334 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4335 | void MacroAssembler::GetObjectType(Register object, |
| 4336 | Register map, |
| 4337 | Register type_reg) { |
| 4338 | lw(map, FieldMemOperand(object, HeapObject::kMapOffset)); |
| 4339 | lbu(type_reg, FieldMemOperand(map, Map::kInstanceTypeOffset)); |
| 4340 | } |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 4341 | |
| 4342 | |
| 4343 | // ----------------------------------------------------------------------------- |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4344 | // Runtime calls. |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 4345 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4346 | void MacroAssembler::CallStub(CodeStub* stub, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4347 | TypeFeedbackId ast_id, |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4348 | Condition cond, |
| 4349 | Register r1, |
| 4350 | const Operand& r2, |
| 4351 | BranchDelaySlot bd) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4352 | DCHECK(AllowThisStubCall(stub)); // Stub calls are not allowed in some stubs. |
| 4353 | Call(stub->GetCode(), RelocInfo::CODE_TARGET, ast_id, |
| 4354 | cond, r1, r2, bd); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 4355 | } |
| 4356 | |
| 4357 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4358 | void MacroAssembler::TailCallStub(CodeStub* stub, |
| 4359 | Condition cond, |
| 4360 | Register r1, |
| 4361 | const Operand& r2, |
| 4362 | BranchDelaySlot bd) { |
| 4363 | Jump(stub->GetCode(), RelocInfo::CODE_TARGET, cond, r1, r2, bd); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 4364 | } |
| 4365 | |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 4366 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4367 | bool MacroAssembler::AllowThisStubCall(CodeStub* stub) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4368 | return has_frame_ || !stub->SometimesSetsUpAFrame(); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4369 | } |
| 4370 | |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 4371 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4372 | void MacroAssembler::IndexFromHash(Register hash, Register index) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4373 | // If the hash field contains an array index pick it out. The assert checks |
| 4374 | // that the constants for the maximum number of digits for an array index |
| 4375 | // cached in the hash field and the number of bits reserved for it does not |
| 4376 | // conflict. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4377 | DCHECK(TenToThe(String::kMaxCachedArrayIndexLength) < |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4378 | (1 << String::kArrayIndexValueBits)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4379 | DecodeFieldToSmi<String::ArrayIndexValueBits>(index, hash); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4380 | } |
| 4381 | |
| 4382 | |
| 4383 | void MacroAssembler::ObjectToDoubleFPURegister(Register object, |
| 4384 | FPURegister result, |
| 4385 | Register scratch1, |
| 4386 | Register scratch2, |
| 4387 | Register heap_number_map, |
| 4388 | Label* not_number, |
| 4389 | ObjectToDoubleFlags flags) { |
| 4390 | Label done; |
| 4391 | if ((flags & OBJECT_NOT_SMI) == 0) { |
| 4392 | Label not_smi; |
| 4393 | JumpIfNotSmi(object, ¬_smi); |
| 4394 | // Remove smi tag and convert to double. |
| 4395 | sra(scratch1, object, kSmiTagSize); |
| 4396 | mtc1(scratch1, result); |
| 4397 | cvt_d_w(result, result); |
| 4398 | Branch(&done); |
| 4399 | bind(¬_smi); |
| 4400 | } |
| 4401 | // Check for heap number and load double value from it. |
| 4402 | lw(scratch1, FieldMemOperand(object, HeapObject::kMapOffset)); |
| 4403 | Branch(not_number, ne, scratch1, Operand(heap_number_map)); |
| 4404 | |
| 4405 | if ((flags & AVOID_NANS_AND_INFINITIES) != 0) { |
| 4406 | // If exponent is all ones the number is either a NaN or +/-Infinity. |
| 4407 | Register exponent = scratch1; |
| 4408 | Register mask_reg = scratch2; |
| 4409 | lw(exponent, FieldMemOperand(object, HeapNumber::kExponentOffset)); |
| 4410 | li(mask_reg, HeapNumber::kExponentMask); |
| 4411 | |
| 4412 | And(exponent, exponent, mask_reg); |
| 4413 | Branch(not_number, eq, exponent, Operand(mask_reg)); |
| 4414 | } |
| 4415 | ldc1(result, FieldMemOperand(object, HeapNumber::kValueOffset)); |
| 4416 | bind(&done); |
| 4417 | } |
| 4418 | |
| 4419 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4420 | void MacroAssembler::SmiToDoubleFPURegister(Register smi, |
| 4421 | FPURegister value, |
| 4422 | Register scratch1) { |
| 4423 | sra(scratch1, smi, kSmiTagSize); |
| 4424 | mtc1(scratch1, value); |
| 4425 | cvt_d_w(value, value); |
| 4426 | } |
| 4427 | |
| 4428 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4429 | static inline void BranchOvfHelper(MacroAssembler* masm, Register overflow_dst, |
| 4430 | Label* overflow_label, |
| 4431 | Label* no_overflow_label) { |
| 4432 | DCHECK(overflow_label || no_overflow_label); |
| 4433 | if (!overflow_label) { |
| 4434 | DCHECK(no_overflow_label); |
| 4435 | masm->Branch(no_overflow_label, ge, overflow_dst, Operand(zero_reg)); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 4436 | } else { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4437 | masm->Branch(overflow_label, lt, overflow_dst, Operand(zero_reg)); |
| 4438 | if (no_overflow_label) masm->Branch(no_overflow_label); |
| 4439 | } |
| 4440 | } |
| 4441 | |
| 4442 | |
| 4443 | void MacroAssembler::AddBranchOvf(Register dst, Register left, |
| 4444 | const Operand& right, Label* overflow_label, |
| 4445 | Label* no_overflow_label, Register scratch) { |
| 4446 | if (right.is_reg()) { |
| 4447 | AddBranchOvf(dst, left, right.rm(), overflow_label, no_overflow_label, |
| 4448 | scratch); |
| 4449 | } else { |
| 4450 | if (IsMipsArchVariant(kMips32r6)) { |
| 4451 | Register right_reg = t9; |
| 4452 | DCHECK(!left.is(right_reg)); |
| 4453 | li(right_reg, Operand(right)); |
| 4454 | AddBranchOvf(dst, left, right_reg, overflow_label, no_overflow_label); |
| 4455 | } else { |
| 4456 | Register overflow_dst = t9; |
| 4457 | DCHECK(!dst.is(scratch)); |
| 4458 | DCHECK(!dst.is(overflow_dst)); |
| 4459 | DCHECK(!scratch.is(overflow_dst)); |
| 4460 | DCHECK(!left.is(overflow_dst)); |
| 4461 | if (dst.is(left)) { |
| 4462 | mov(scratch, left); // Preserve left. |
| 4463 | Addu(dst, left, right.immediate()); // Left is overwritten. |
| 4464 | xor_(scratch, dst, scratch); // Original left. |
| 4465 | // Load right since xori takes uint16 as immediate. |
| 4466 | Addu(overflow_dst, zero_reg, right); |
| 4467 | xor_(overflow_dst, dst, overflow_dst); |
| 4468 | and_(overflow_dst, overflow_dst, scratch); |
| 4469 | } else { |
| 4470 | Addu(dst, left, right.immediate()); |
| 4471 | xor_(overflow_dst, dst, left); |
| 4472 | // Load right since xori takes uint16 as immediate. |
| 4473 | Addu(scratch, zero_reg, right); |
| 4474 | xor_(scratch, dst, scratch); |
| 4475 | and_(overflow_dst, scratch, overflow_dst); |
| 4476 | } |
| 4477 | BranchOvfHelper(this, overflow_dst, overflow_label, no_overflow_label); |
| 4478 | } |
| 4479 | } |
| 4480 | } |
| 4481 | |
| 4482 | |
| 4483 | void MacroAssembler::AddBranchOvf(Register dst, Register left, Register right, |
| 4484 | Label* overflow_label, |
| 4485 | Label* no_overflow_label, Register scratch) { |
| 4486 | if (IsMipsArchVariant(kMips32r6)) { |
| 4487 | if (!overflow_label) { |
| 4488 | DCHECK(no_overflow_label); |
| 4489 | DCHECK(!dst.is(scratch)); |
| 4490 | Register left_reg = left.is(dst) ? scratch : left; |
| 4491 | Register right_reg = right.is(dst) ? t9 : right; |
| 4492 | DCHECK(!dst.is(left_reg)); |
| 4493 | DCHECK(!dst.is(right_reg)); |
| 4494 | Move(left_reg, left); |
| 4495 | Move(right_reg, right); |
| 4496 | addu(dst, left, right); |
| 4497 | bnvc(left_reg, right_reg, no_overflow_label); |
| 4498 | } else { |
| 4499 | bovc(left, right, overflow_label); |
| 4500 | addu(dst, left, right); |
| 4501 | if (no_overflow_label) bc(no_overflow_label); |
| 4502 | } |
| 4503 | } else { |
| 4504 | Register overflow_dst = t9; |
| 4505 | DCHECK(!dst.is(scratch)); |
| 4506 | DCHECK(!dst.is(overflow_dst)); |
| 4507 | DCHECK(!scratch.is(overflow_dst)); |
| 4508 | DCHECK(!left.is(overflow_dst)); |
| 4509 | DCHECK(!right.is(overflow_dst)); |
| 4510 | DCHECK(!left.is(scratch)); |
| 4511 | DCHECK(!right.is(scratch)); |
| 4512 | |
| 4513 | if (left.is(right) && dst.is(left)) { |
| 4514 | mov(overflow_dst, right); |
| 4515 | right = overflow_dst; |
| 4516 | } |
| 4517 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 4518 | if (dst.is(left)) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4519 | mov(scratch, left); // Preserve left. |
| 4520 | addu(dst, left, right); // Left is overwritten. |
| 4521 | xor_(scratch, dst, scratch); // Original left. |
| 4522 | xor_(overflow_dst, dst, right); |
| 4523 | and_(overflow_dst, overflow_dst, scratch); |
| 4524 | } else if (dst.is(right)) { |
| 4525 | mov(scratch, right); // Preserve right. |
| 4526 | addu(dst, left, right); // Right is overwritten. |
| 4527 | xor_(scratch, dst, scratch); // Original right. |
| 4528 | xor_(overflow_dst, dst, left); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 4529 | and_(overflow_dst, overflow_dst, scratch); |
| 4530 | } else { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4531 | addu(dst, left, right); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 4532 | xor_(overflow_dst, dst, left); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4533 | xor_(scratch, dst, right); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 4534 | and_(overflow_dst, scratch, overflow_dst); |
| 4535 | } |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4536 | BranchOvfHelper(this, overflow_dst, overflow_label, no_overflow_label); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 4537 | } |
| 4538 | } |
| 4539 | |
| 4540 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4541 | void MacroAssembler::SubBranchOvf(Register dst, Register left, |
| 4542 | const Operand& right, Label* overflow_label, |
| 4543 | Label* no_overflow_label, Register scratch) { |
| 4544 | DCHECK(overflow_label || no_overflow_label); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 4545 | if (right.is_reg()) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4546 | SubBranchOvf(dst, left, right.rm(), overflow_label, no_overflow_label, |
| 4547 | scratch); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 4548 | } else { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4549 | Register overflow_dst = t9; |
| 4550 | DCHECK(!dst.is(scratch)); |
| 4551 | DCHECK(!dst.is(overflow_dst)); |
| 4552 | DCHECK(!scratch.is(overflow_dst)); |
| 4553 | DCHECK(!left.is(overflow_dst)); |
| 4554 | DCHECK(!left.is(scratch)); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 4555 | if (dst.is(left)) { |
| 4556 | mov(scratch, left); // Preserve left. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4557 | Subu(dst, left, right.immediate()); // Left is overwritten. |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 4558 | // Load right since xori takes uint16 as immediate. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4559 | Addu(overflow_dst, zero_reg, right); |
| 4560 | xor_(overflow_dst, scratch, overflow_dst); // scratch is original left. |
| 4561 | xor_(scratch, dst, scratch); // scratch is original left. |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 4562 | and_(overflow_dst, scratch, overflow_dst); |
| 4563 | } else { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4564 | Subu(dst, left, right); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 4565 | xor_(overflow_dst, dst, left); |
| 4566 | // Load right since xori takes uint16 as immediate. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4567 | Addu(scratch, zero_reg, right); |
| 4568 | xor_(scratch, left, scratch); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 4569 | and_(overflow_dst, scratch, overflow_dst); |
| 4570 | } |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4571 | BranchOvfHelper(this, overflow_dst, overflow_label, no_overflow_label); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 4572 | } |
| 4573 | } |
| 4574 | |
| 4575 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4576 | void MacroAssembler::SubBranchOvf(Register dst, Register left, Register right, |
| 4577 | Label* overflow_label, |
| 4578 | Label* no_overflow_label, Register scratch) { |
| 4579 | DCHECK(overflow_label || no_overflow_label); |
| 4580 | Register overflow_dst = t9; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4581 | DCHECK(!dst.is(scratch)); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4582 | DCHECK(!dst.is(overflow_dst)); |
| 4583 | DCHECK(!scratch.is(overflow_dst)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4584 | DCHECK(!overflow_dst.is(left)); |
| 4585 | DCHECK(!overflow_dst.is(right)); |
| 4586 | DCHECK(!scratch.is(left)); |
| 4587 | DCHECK(!scratch.is(right)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4588 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4589 | // This happens with some crankshaft code. Since Subu works fine if |
| 4590 | // left == right, let's not make that restriction here. |
| 4591 | if (left.is(right)) { |
| 4592 | mov(dst, zero_reg); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4593 | if (no_overflow_label) { |
| 4594 | Branch(no_overflow_label); |
| 4595 | } |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4596 | } |
| 4597 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4598 | if (dst.is(left)) { |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 4599 | mov(scratch, left); // Preserve left. |
| 4600 | subu(dst, left, right); // Left is overwritten. |
| 4601 | xor_(overflow_dst, dst, scratch); // scratch is original left. |
| 4602 | xor_(scratch, scratch, right); // scratch is original left. |
| 4603 | and_(overflow_dst, scratch, overflow_dst); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4604 | } else if (dst.is(right)) { |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 4605 | mov(scratch, right); // Preserve right. |
| 4606 | subu(dst, left, right); // Right is overwritten. |
| 4607 | xor_(overflow_dst, dst, left); |
| 4608 | xor_(scratch, left, scratch); // Original right. |
| 4609 | and_(overflow_dst, scratch, overflow_dst); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4610 | } else { |
| 4611 | subu(dst, left, right); |
| 4612 | xor_(overflow_dst, dst, left); |
| 4613 | xor_(scratch, left, right); |
| 4614 | and_(overflow_dst, scratch, overflow_dst); |
| 4615 | } |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4616 | BranchOvfHelper(this, overflow_dst, overflow_label, no_overflow_label); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4617 | } |
| 4618 | |
| 4619 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4620 | void MacroAssembler::CallRuntime(const Runtime::Function* f, int num_arguments, |
| 4621 | SaveFPRegsMode save_doubles, |
| 4622 | BranchDelaySlot bd) { |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 4623 | // All parameters are on the stack. v0 has the return value after call. |
| 4624 | |
| 4625 | // If the expected number of arguments of the runtime function is |
| 4626 | // constant, we check that the actual number of arguments match the |
| 4627 | // expectation. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4628 | CHECK(f->nargs < 0 || f->nargs == num_arguments); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 4629 | |
| 4630 | // TODO(1236192): Most runtime routines don't need the number of |
| 4631 | // arguments passed in because it is constant. At some point we |
| 4632 | // should remove this need and make the runtime routine entry code |
| 4633 | // smarter. |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4634 | PrepareCEntryArgs(num_arguments); |
| 4635 | PrepareCEntryFunction(ExternalReference(f, isolate())); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4636 | CEntryStub stub(isolate(), 1, save_doubles); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4637 | CallStub(&stub, TypeFeedbackId::None(), al, zero_reg, Operand(zero_reg), bd); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 4638 | } |
| 4639 | |
| 4640 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4641 | void MacroAssembler::CallExternalReference(const ExternalReference& ext, |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4642 | int num_arguments, |
| 4643 | BranchDelaySlot bd) { |
| 4644 | PrepareCEntryArgs(num_arguments); |
| 4645 | PrepareCEntryFunction(ext); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4646 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4647 | CEntryStub stub(isolate(), 1); |
| 4648 | CallStub(&stub, TypeFeedbackId::None(), al, zero_reg, Operand(zero_reg), bd); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4649 | } |
| 4650 | |
| 4651 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4652 | void MacroAssembler::TailCallRuntime(Runtime::FunctionId fid) { |
| 4653 | const Runtime::Function* function = Runtime::FunctionForId(fid); |
| 4654 | DCHECK_EQ(1, function->result_size); |
| 4655 | if (function->nargs >= 0) { |
| 4656 | PrepareCEntryArgs(function->nargs); |
| 4657 | } |
| 4658 | JumpToExternalReference(ExternalReference(fid, isolate())); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 4659 | } |
| 4660 | |
| 4661 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4662 | void MacroAssembler::JumpToExternalReference(const ExternalReference& builtin, |
| 4663 | BranchDelaySlot bd) { |
| 4664 | PrepareCEntryFunction(builtin); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4665 | CEntryStub stub(isolate(), 1); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4666 | Jump(stub.GetCode(), |
| 4667 | RelocInfo::CODE_TARGET, |
| 4668 | al, |
| 4669 | zero_reg, |
| 4670 | Operand(zero_reg), |
| 4671 | bd); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 4672 | } |
| 4673 | |
| 4674 | |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 4675 | void MacroAssembler::SetCounter(StatsCounter* counter, int value, |
| 4676 | Register scratch1, Register scratch2) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4677 | if (FLAG_native_code_counters && counter->Enabled()) { |
| 4678 | li(scratch1, Operand(value)); |
| 4679 | li(scratch2, Operand(ExternalReference(counter))); |
| 4680 | sw(scratch1, MemOperand(scratch2)); |
| 4681 | } |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 4682 | } |
| 4683 | |
| 4684 | |
| 4685 | void MacroAssembler::IncrementCounter(StatsCounter* counter, int value, |
| 4686 | Register scratch1, Register scratch2) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4687 | DCHECK(value > 0); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4688 | if (FLAG_native_code_counters && counter->Enabled()) { |
| 4689 | li(scratch2, Operand(ExternalReference(counter))); |
| 4690 | lw(scratch1, MemOperand(scratch2)); |
| 4691 | Addu(scratch1, scratch1, Operand(value)); |
| 4692 | sw(scratch1, MemOperand(scratch2)); |
| 4693 | } |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 4694 | } |
| 4695 | |
| 4696 | |
| 4697 | void MacroAssembler::DecrementCounter(StatsCounter* counter, int value, |
| 4698 | Register scratch1, Register scratch2) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4699 | DCHECK(value > 0); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4700 | if (FLAG_native_code_counters && counter->Enabled()) { |
| 4701 | li(scratch2, Operand(ExternalReference(counter))); |
| 4702 | lw(scratch1, MemOperand(scratch2)); |
| 4703 | Subu(scratch1, scratch1, Operand(value)); |
| 4704 | sw(scratch1, MemOperand(scratch2)); |
| 4705 | } |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 4706 | } |
| 4707 | |
| 4708 | |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 4709 | // ----------------------------------------------------------------------------- |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4710 | // Debugging. |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 4711 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4712 | void MacroAssembler::Assert(Condition cc, BailoutReason reason, |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 4713 | Register rs, Operand rt) { |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4714 | if (emit_debug_code()) |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4715 | Check(cc, reason, rs, rt); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4716 | } |
| 4717 | |
| 4718 | |
| 4719 | void MacroAssembler::AssertFastElements(Register elements) { |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4720 | if (emit_debug_code()) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4721 | DCHECK(!elements.is(at)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4722 | Label ok; |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4723 | push(elements); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4724 | lw(elements, FieldMemOperand(elements, HeapObject::kMapOffset)); |
| 4725 | LoadRoot(at, Heap::kFixedArrayMapRootIndex); |
| 4726 | Branch(&ok, eq, elements, Operand(at)); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 4727 | LoadRoot(at, Heap::kFixedDoubleArrayMapRootIndex); |
| 4728 | Branch(&ok, eq, elements, Operand(at)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4729 | LoadRoot(at, Heap::kFixedCOWArrayMapRootIndex); |
| 4730 | Branch(&ok, eq, elements, Operand(at)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4731 | Abort(kJSObjectWithFastElementsMapHasSlowElements); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4732 | bind(&ok); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4733 | pop(elements); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4734 | } |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 4735 | } |
| 4736 | |
| 4737 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4738 | void MacroAssembler::Check(Condition cc, BailoutReason reason, |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 4739 | Register rs, Operand rt) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4740 | Label L; |
| 4741 | Branch(&L, cc, rs, rt); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4742 | Abort(reason); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4743 | // Will not return here. |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4744 | bind(&L); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 4745 | } |
| 4746 | |
| 4747 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4748 | void MacroAssembler::Abort(BailoutReason reason) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4749 | Label abort_start; |
| 4750 | bind(&abort_start); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4751 | #ifdef DEBUG |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4752 | const char* msg = GetBailoutReason(reason); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4753 | if (msg != NULL) { |
| 4754 | RecordComment("Abort message: "); |
| 4755 | RecordComment(msg); |
| 4756 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4757 | |
| 4758 | if (FLAG_trap_on_abort) { |
| 4759 | stop(msg); |
| 4760 | return; |
| 4761 | } |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4762 | #endif |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4763 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4764 | li(a0, Operand(Smi::FromInt(reason))); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4765 | push(a0); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4766 | // Disable stub call restrictions to always allow calls to abort. |
| 4767 | if (!has_frame_) { |
| 4768 | // We don't actually want to generate a pile of code for this, so just |
| 4769 | // claim there is a stack frame, without generating one. |
| 4770 | FrameScope scope(this, StackFrame::NONE); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame^] | 4771 | CallRuntime(Runtime::kAbort); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4772 | } else { |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame^] | 4773 | CallRuntime(Runtime::kAbort); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4774 | } |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4775 | // Will not return here. |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4776 | if (is_trampoline_pool_blocked()) { |
| 4777 | // If the calling code cares about the exact number of |
| 4778 | // instructions generated, we insert padding here to keep the size |
| 4779 | // of the Abort macro constant. |
| 4780 | // Currently in debug mode with debug_code enabled the number of |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4781 | // generated instructions is 10, so we use this as a maximum value. |
| 4782 | static const int kExpectedAbortInstructions = 10; |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4783 | int abort_instructions = InstructionsGeneratedSince(&abort_start); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4784 | DCHECK(abort_instructions <= kExpectedAbortInstructions); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4785 | while (abort_instructions++ < kExpectedAbortInstructions) { |
| 4786 | nop(); |
| 4787 | } |
| 4788 | } |
| 4789 | } |
| 4790 | |
| 4791 | |
| 4792 | void MacroAssembler::LoadContext(Register dst, int context_chain_length) { |
| 4793 | if (context_chain_length > 0) { |
| 4794 | // Move up the chain of contexts to the context containing the slot. |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 4795 | lw(dst, MemOperand(cp, Context::SlotOffset(Context::PREVIOUS_INDEX))); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4796 | for (int i = 1; i < context_chain_length; i++) { |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 4797 | lw(dst, MemOperand(dst, Context::SlotOffset(Context::PREVIOUS_INDEX))); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4798 | } |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4799 | } else { |
| 4800 | // Slot is in the current function context. Move it into the |
| 4801 | // destination register in case we store into it (the write barrier |
| 4802 | // cannot be allowed to destroy the context in esi). |
| 4803 | Move(dst, cp); |
| 4804 | } |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4805 | } |
| 4806 | |
| 4807 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4808 | void MacroAssembler::LoadTransitionedArrayMapConditional( |
| 4809 | ElementsKind expected_kind, |
| 4810 | ElementsKind transitioned_kind, |
| 4811 | Register map_in_out, |
| 4812 | Register scratch, |
| 4813 | Label* no_map_match) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4814 | DCHECK(IsFastElementsKind(expected_kind)); |
| 4815 | DCHECK(IsFastElementsKind(transitioned_kind)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4816 | |
| 4817 | // 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] | 4818 | lw(scratch, NativeContextMemOperand()); |
| 4819 | lw(at, ContextMemOperand(scratch, Context::ArrayMapIndex(expected_kind))); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4820 | Branch(no_map_match, ne, map_in_out, Operand(at)); |
| 4821 | |
| 4822 | // Use the transitioned cached map. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4823 | lw(map_in_out, |
| 4824 | ContextMemOperand(scratch, Context::ArrayMapIndex(transitioned_kind))); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4825 | } |
| 4826 | |
| 4827 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4828 | void MacroAssembler::LoadNativeContextSlot(int index, Register dst) { |
| 4829 | lw(dst, NativeContextMemOperand()); |
| 4830 | lw(dst, ContextMemOperand(dst, index)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4831 | } |
| 4832 | |
| 4833 | |
| 4834 | void MacroAssembler::LoadGlobalFunctionInitialMap(Register function, |
| 4835 | Register map, |
| 4836 | Register scratch) { |
| 4837 | // Load the initial map. The global functions all have initial maps. |
| 4838 | lw(map, FieldMemOperand(function, JSFunction::kPrototypeOrInitialMapOffset)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4839 | if (emit_debug_code()) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4840 | Label ok, fail; |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4841 | CheckMap(map, scratch, Heap::kMetaMapRootIndex, &fail, DO_SMI_CHECK); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4842 | Branch(&ok); |
| 4843 | bind(&fail); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4844 | Abort(kGlobalFunctionsMustHaveInitialMap); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4845 | bind(&ok); |
| 4846 | } |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 4847 | } |
| 4848 | |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 4849 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4850 | void MacroAssembler::StubPrologue() { |
| 4851 | Push(ra, fp, cp); |
| 4852 | Push(Smi::FromInt(StackFrame::STUB)); |
| 4853 | // Adjust FP to point to saved FP. |
| 4854 | Addu(fp, sp, Operand(StandardFrameConstants::kFixedFrameSizeFromFp)); |
| 4855 | } |
| 4856 | |
| 4857 | |
| 4858 | void MacroAssembler::Prologue(bool code_pre_aging) { |
| 4859 | PredictableCodeSizeScope predictible_code_size_scope( |
| 4860 | this, kNoCodeAgeSequenceLength); |
| 4861 | // The following three instructions must remain together and unmodified |
| 4862 | // for code aging to work properly. |
| 4863 | if (code_pre_aging) { |
| 4864 | // Pre-age the code. |
| 4865 | Code* stub = Code::GetPreAgedCodeAgeStub(isolate()); |
| 4866 | nop(Assembler::CODE_AGE_MARKER_NOP); |
| 4867 | // Load the stub address to t9 and call it, |
| 4868 | // GetCodeAgeAndParity() extracts the stub address from this instruction. |
| 4869 | li(t9, |
| 4870 | Operand(reinterpret_cast<uint32_t>(stub->instruction_start())), |
| 4871 | CONSTANT_SIZE); |
| 4872 | nop(); // Prevent jalr to jal optimization. |
| 4873 | jalr(t9, a0); |
| 4874 | nop(); // Branch delay slot nop. |
| 4875 | nop(); // Pad the empty space. |
| 4876 | } else { |
| 4877 | Push(ra, fp, cp, a1); |
| 4878 | nop(Assembler::CODE_AGE_SEQUENCE_NOP); |
| 4879 | // Adjust fp to point to caller's fp. |
| 4880 | Addu(fp, sp, Operand(StandardFrameConstants::kFixedFrameSizeFromFp)); |
| 4881 | } |
| 4882 | } |
| 4883 | |
| 4884 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4885 | void MacroAssembler::EmitLoadTypeFeedbackVector(Register vector) { |
| 4886 | lw(vector, MemOperand(fp, JavaScriptFrameConstants::kFunctionOffset)); |
| 4887 | lw(vector, FieldMemOperand(vector, JSFunction::kSharedFunctionInfoOffset)); |
| 4888 | lw(vector, |
| 4889 | FieldMemOperand(vector, SharedFunctionInfo::kFeedbackVectorOffset)); |
| 4890 | } |
| 4891 | |
| 4892 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 4893 | void MacroAssembler::EnterFrame(StackFrame::Type type, |
| 4894 | bool load_constant_pool_pointer_reg) { |
| 4895 | // Out-of-line constant pool not implemented on mips. |
| 4896 | UNREACHABLE(); |
| 4897 | } |
| 4898 | |
| 4899 | |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 4900 | void MacroAssembler::EnterFrame(StackFrame::Type type) { |
| 4901 | addiu(sp, sp, -5 * kPointerSize); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4902 | li(t8, Operand(Smi::FromInt(type))); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4903 | li(t9, Operand(CodeObject()), CONSTANT_SIZE); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 4904 | sw(ra, MemOperand(sp, 4 * kPointerSize)); |
| 4905 | sw(fp, MemOperand(sp, 3 * kPointerSize)); |
| 4906 | sw(cp, MemOperand(sp, 2 * kPointerSize)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4907 | sw(t8, MemOperand(sp, 1 * kPointerSize)); |
| 4908 | sw(t9, MemOperand(sp, 0 * kPointerSize)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4909 | // Adjust FP to point to saved FP. |
| 4910 | Addu(fp, sp, |
| 4911 | Operand(StandardFrameConstants::kFixedFrameSizeFromFp + kPointerSize)); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 4912 | } |
| 4913 | |
| 4914 | |
| 4915 | void MacroAssembler::LeaveFrame(StackFrame::Type type) { |
| 4916 | mov(sp, fp); |
| 4917 | lw(fp, MemOperand(sp, 0 * kPointerSize)); |
| 4918 | lw(ra, MemOperand(sp, 1 * kPointerSize)); |
| 4919 | addiu(sp, sp, 2 * kPointerSize); |
| 4920 | } |
| 4921 | |
| 4922 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4923 | void MacroAssembler::EnterExitFrame(bool save_doubles, |
| 4924 | int stack_space) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4925 | // Set up the frame structure on the stack. |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4926 | STATIC_ASSERT(2 * kPointerSize == ExitFrameConstants::kCallerSPDisplacement); |
| 4927 | STATIC_ASSERT(1 * kPointerSize == ExitFrameConstants::kCallerPCOffset); |
| 4928 | STATIC_ASSERT(0 * kPointerSize == ExitFrameConstants::kCallerFPOffset); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 4929 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4930 | // This is how the stack will look: |
| 4931 | // fp + 2 (==kCallerSPDisplacement) - old stack's end |
| 4932 | // [fp + 1 (==kCallerPCOffset)] - saved old ra |
| 4933 | // [fp + 0 (==kCallerFPOffset)] - saved old fp |
| 4934 | // [fp - 1 (==kSPOffset)] - sp of the called function |
| 4935 | // [fp - 2 (==kCodeOffset)] - CodeObject |
| 4936 | // fp - (2 + stack_space + alignment) == sp == [fp - kSPOffset] - top of the |
| 4937 | // new stack (will contain saved ra) |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 4938 | |
| 4939 | // Save registers. |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4940 | addiu(sp, sp, -4 * kPointerSize); |
| 4941 | sw(ra, MemOperand(sp, 3 * kPointerSize)); |
| 4942 | sw(fp, MemOperand(sp, 2 * kPointerSize)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4943 | addiu(fp, sp, 2 * kPointerSize); // Set up new frame pointer. |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 4944 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4945 | if (emit_debug_code()) { |
| 4946 | sw(zero_reg, MemOperand(fp, ExitFrameConstants::kSPOffset)); |
| 4947 | } |
| 4948 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4949 | // Accessed from ExitFrame::code_slot. |
| 4950 | li(t8, Operand(CodeObject()), CONSTANT_SIZE); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4951 | sw(t8, MemOperand(fp, ExitFrameConstants::kCodeOffset)); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 4952 | |
| 4953 | // Save the frame pointer and the context in top. |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 4954 | li(t8, Operand(ExternalReference(Isolate::kCEntryFPAddress, isolate()))); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4955 | sw(fp, MemOperand(t8)); |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 4956 | li(t8, Operand(ExternalReference(Isolate::kContextAddress, isolate()))); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4957 | sw(cp, MemOperand(t8)); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 4958 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4959 | const int frame_alignment = MacroAssembler::ActivationFrameAlignment(); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4960 | if (save_doubles) { |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4961 | // 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] | 4962 | DCHECK(kDoubleSize == frame_alignment); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4963 | if (frame_alignment > 0) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4964 | DCHECK(base::bits::IsPowerOfTwo32(frame_alignment)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4965 | And(sp, sp, Operand(-frame_alignment)); // Align stack. |
| 4966 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4967 | int space = FPURegister::kMaxNumRegisters * kDoubleSize; |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4968 | Subu(sp, sp, Operand(space)); |
| 4969 | // Remember: we only need to save every 2nd double FPU value. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4970 | for (int i = 0; i < FPURegister::kMaxNumRegisters; i+=2) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4971 | FPURegister reg = FPURegister::from_code(i); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4972 | sdc1(reg, MemOperand(sp, i * kDoubleSize)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4973 | } |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4974 | } |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4975 | |
| 4976 | // Reserve place for the return address, stack space and an optional slot |
| 4977 | // (used by the DirectCEntryStub to hold the return value if a struct is |
| 4978 | // returned) and align the frame preparing for calling the runtime function. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4979 | DCHECK(stack_space >= 0); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4980 | Subu(sp, sp, Operand((stack_space + 2) * kPointerSize)); |
| 4981 | if (frame_alignment > 0) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4982 | DCHECK(base::bits::IsPowerOfTwo32(frame_alignment)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4983 | And(sp, sp, Operand(-frame_alignment)); // Align stack. |
| 4984 | } |
| 4985 | |
| 4986 | // Set the exit frame sp value to point just before the return address |
| 4987 | // location. |
| 4988 | addiu(at, sp, kPointerSize); |
| 4989 | sw(at, MemOperand(fp, ExitFrameConstants::kSPOffset)); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 4990 | } |
| 4991 | |
| 4992 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4993 | void MacroAssembler::LeaveExitFrame(bool save_doubles, Register argument_count, |
| 4994 | bool restore_context, bool do_return, |
| 4995 | bool argument_count_is_length) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4996 | // Optionally restore all double registers. |
| 4997 | if (save_doubles) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4998 | // Remember: we only need to restore every 2nd double FPU value. |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4999 | lw(t8, MemOperand(fp, ExitFrameConstants::kSPOffset)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5000 | for (int i = 0; i < FPURegister::kMaxNumRegisters; i+=2) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5001 | FPURegister reg = FPURegister::from_code(i); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 5002 | ldc1(reg, MemOperand(t8, i * kDoubleSize + kPointerSize)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5003 | } |
| 5004 | } |
| 5005 | |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 5006 | // Clear top frame. |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 5007 | li(t8, Operand(ExternalReference(Isolate::kCEntryFPAddress, isolate()))); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5008 | sw(zero_reg, MemOperand(t8)); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 5009 | |
| 5010 | // Restore current context from top and clear it in debug mode. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5011 | if (restore_context) { |
| 5012 | li(t8, Operand(ExternalReference(Isolate::kContextAddress, isolate()))); |
| 5013 | lw(cp, MemOperand(t8)); |
| 5014 | } |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 5015 | #ifdef DEBUG |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5016 | li(t8, Operand(ExternalReference(Isolate::kContextAddress, isolate()))); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5017 | sw(a3, MemOperand(t8)); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 5018 | #endif |
| 5019 | |
| 5020 | // Pop the arguments, restore registers, and return. |
| 5021 | mov(sp, fp); // Respect ABI stack constraint. |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 5022 | lw(fp, MemOperand(sp, ExitFrameConstants::kCallerFPOffset)); |
| 5023 | lw(ra, MemOperand(sp, ExitFrameConstants::kCallerPCOffset)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5024 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 5025 | if (argument_count.is_valid()) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 5026 | if (argument_count_is_length) { |
| 5027 | addu(sp, sp, argument_count); |
| 5028 | } else { |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame^] | 5029 | Lsa(sp, sp, argument_count, kPointerSizeLog2, t8); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 5030 | } |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 5031 | } |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5032 | |
| 5033 | if (do_return) { |
| 5034 | Ret(USE_DELAY_SLOT); |
| 5035 | // If returning, the instruction in the delay slot will be the addiu below. |
| 5036 | } |
| 5037 | addiu(sp, sp, 8); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 5038 | } |
| 5039 | |
| 5040 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5041 | void MacroAssembler::InitializeNewString(Register string, |
| 5042 | Register length, |
| 5043 | Heap::RootListIndex map_index, |
| 5044 | Register scratch1, |
| 5045 | Register scratch2) { |
| 5046 | sll(scratch1, length, kSmiTagSize); |
| 5047 | LoadRoot(scratch2, map_index); |
| 5048 | sw(scratch1, FieldMemOperand(string, String::kLengthOffset)); |
| 5049 | li(scratch1, Operand(String::kEmptyHashField)); |
| 5050 | sw(scratch2, FieldMemOperand(string, HeapObject::kMapOffset)); |
| 5051 | sw(scratch1, FieldMemOperand(string, String::kHashFieldOffset)); |
| 5052 | } |
| 5053 | |
| 5054 | |
| 5055 | int MacroAssembler::ActivationFrameAlignment() { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5056 | #if V8_HOST_ARCH_MIPS |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5057 | // Running on the real platform. Use the alignment as mandated by the local |
| 5058 | // environment. |
| 5059 | // Note: This will break if we ever start generating snapshots on one Mips |
| 5060 | // platform for another Mips platform with a different alignment. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5061 | return base::OS::ActivationFrameAlignment(); |
| 5062 | #else // V8_HOST_ARCH_MIPS |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5063 | // If we are using the simulator then we should always align to the expected |
| 5064 | // alignment. As the simulator is used to generate snapshots we do not know |
| 5065 | // if the target platform will need alignment, so this is controlled from a |
| 5066 | // flag. |
| 5067 | return FLAG_sim_stack_alignment; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5068 | #endif // V8_HOST_ARCH_MIPS |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5069 | } |
| 5070 | |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 5071 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 5072 | void MacroAssembler::AssertStackIsAligned() { |
| 5073 | if (emit_debug_code()) { |
| 5074 | const int frame_alignment = ActivationFrameAlignment(); |
| 5075 | const int frame_alignment_mask = frame_alignment - 1; |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5076 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 5077 | if (frame_alignment > kPointerSize) { |
| 5078 | Label alignment_as_expected; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5079 | DCHECK(base::bits::IsPowerOfTwo32(frame_alignment)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 5080 | andi(at, sp, frame_alignment_mask); |
| 5081 | Branch(&alignment_as_expected, eq, at, Operand(zero_reg)); |
| 5082 | // Don't use Check here, as it will call Runtime_Abort re-entering here. |
| 5083 | stop("Unexpected stack alignment"); |
| 5084 | bind(&alignment_as_expected); |
| 5085 | } |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 5086 | } |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 5087 | } |
| 5088 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5089 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5090 | void MacroAssembler::JumpIfNotPowerOfTwoOrZero( |
| 5091 | Register reg, |
| 5092 | Register scratch, |
| 5093 | Label* not_power_of_two_or_zero) { |
| 5094 | Subu(scratch, reg, Operand(1)); |
| 5095 | Branch(USE_DELAY_SLOT, not_power_of_two_or_zero, lt, |
| 5096 | scratch, Operand(zero_reg)); |
| 5097 | and_(at, scratch, reg); // In the delay slot. |
| 5098 | Branch(not_power_of_two_or_zero, ne, at, Operand(zero_reg)); |
| 5099 | } |
| 5100 | |
| 5101 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5102 | void MacroAssembler::SmiTagCheckOverflow(Register reg, Register overflow) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5103 | DCHECK(!reg.is(overflow)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5104 | mov(overflow, reg); // Save original value. |
| 5105 | SmiTag(reg); |
| 5106 | xor_(overflow, overflow, reg); // Overflow if (value ^ 2 * value) < 0. |
| 5107 | } |
| 5108 | |
| 5109 | |
| 5110 | void MacroAssembler::SmiTagCheckOverflow(Register dst, |
| 5111 | Register src, |
| 5112 | Register overflow) { |
| 5113 | if (dst.is(src)) { |
| 5114 | // Fall back to slower case. |
| 5115 | SmiTagCheckOverflow(dst, overflow); |
| 5116 | } else { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5117 | DCHECK(!dst.is(src)); |
| 5118 | DCHECK(!dst.is(overflow)); |
| 5119 | DCHECK(!src.is(overflow)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5120 | SmiTag(dst, src); |
| 5121 | xor_(overflow, dst, src); // Overflow if (value ^ 2 * value) < 0. |
| 5122 | } |
| 5123 | } |
| 5124 | |
| 5125 | |
| 5126 | void MacroAssembler::UntagAndJumpIfSmi(Register dst, |
| 5127 | Register src, |
| 5128 | Label* smi_case) { |
| 5129 | JumpIfSmi(src, smi_case, at, USE_DELAY_SLOT); |
| 5130 | SmiUntag(dst, src); |
| 5131 | } |
| 5132 | |
| 5133 | |
| 5134 | void MacroAssembler::UntagAndJumpIfNotSmi(Register dst, |
| 5135 | Register src, |
| 5136 | Label* non_smi_case) { |
| 5137 | JumpIfNotSmi(src, non_smi_case, at, USE_DELAY_SLOT); |
| 5138 | SmiUntag(dst, src); |
| 5139 | } |
| 5140 | |
| 5141 | void MacroAssembler::JumpIfSmi(Register value, |
| 5142 | Label* smi_label, |
| 5143 | Register scratch, |
| 5144 | BranchDelaySlot bd) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5145 | DCHECK_EQ(0, kSmiTag); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5146 | andi(scratch, value, kSmiTagMask); |
| 5147 | Branch(bd, smi_label, eq, scratch, Operand(zero_reg)); |
| 5148 | } |
| 5149 | |
| 5150 | void MacroAssembler::JumpIfNotSmi(Register value, |
| 5151 | Label* not_smi_label, |
| 5152 | Register scratch, |
| 5153 | BranchDelaySlot bd) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5154 | DCHECK_EQ(0, kSmiTag); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5155 | andi(scratch, value, kSmiTagMask); |
| 5156 | Branch(bd, not_smi_label, ne, scratch, Operand(zero_reg)); |
| 5157 | } |
| 5158 | |
| 5159 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5160 | void MacroAssembler::JumpIfNotBothSmi(Register reg1, |
| 5161 | Register reg2, |
| 5162 | Label* on_not_both_smi) { |
| 5163 | STATIC_ASSERT(kSmiTag == 0); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5164 | DCHECK_EQ(1, kSmiTagMask); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5165 | or_(at, reg1, reg2); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5166 | JumpIfNotSmi(at, on_not_both_smi); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5167 | } |
| 5168 | |
| 5169 | |
| 5170 | void MacroAssembler::JumpIfEitherSmi(Register reg1, |
| 5171 | Register reg2, |
| 5172 | Label* on_either_smi) { |
| 5173 | STATIC_ASSERT(kSmiTag == 0); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5174 | DCHECK_EQ(1, kSmiTagMask); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5175 | // Both Smi tags must be 1 (not Smi). |
| 5176 | and_(at, reg1, reg2); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5177 | JumpIfSmi(at, on_either_smi); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5178 | } |
| 5179 | |
| 5180 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5181 | void MacroAssembler::AssertNotSmi(Register object) { |
| 5182 | if (emit_debug_code()) { |
| 5183 | STATIC_ASSERT(kSmiTag == 0); |
| 5184 | andi(at, object, kSmiTagMask); |
| 5185 | Check(ne, kOperandIsASmi, at, Operand(zero_reg)); |
| 5186 | } |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5187 | } |
| 5188 | |
| 5189 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5190 | void MacroAssembler::AssertSmi(Register object) { |
| 5191 | if (emit_debug_code()) { |
| 5192 | STATIC_ASSERT(kSmiTag == 0); |
| 5193 | andi(at, object, kSmiTagMask); |
| 5194 | Check(eq, kOperandIsASmi, at, Operand(zero_reg)); |
| 5195 | } |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5196 | } |
| 5197 | |
| 5198 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5199 | void MacroAssembler::AssertString(Register object) { |
| 5200 | if (emit_debug_code()) { |
| 5201 | STATIC_ASSERT(kSmiTag == 0); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 5202 | SmiTst(object, t8); |
| 5203 | Check(ne, kOperandIsASmiAndNotAString, t8, Operand(zero_reg)); |
| 5204 | GetObjectType(object, t8, t8); |
| 5205 | Check(lo, kOperandIsNotAString, t8, Operand(FIRST_NONSTRING_TYPE)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5206 | } |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 5207 | } |
| 5208 | |
| 5209 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5210 | void MacroAssembler::AssertName(Register object) { |
| 5211 | if (emit_debug_code()) { |
| 5212 | STATIC_ASSERT(kSmiTag == 0); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 5213 | SmiTst(object, t8); |
| 5214 | Check(ne, kOperandIsASmiAndNotAName, t8, Operand(zero_reg)); |
| 5215 | GetObjectType(object, t8, t8); |
| 5216 | Check(le, kOperandIsNotAName, t8, Operand(LAST_NAME_TYPE)); |
| 5217 | } |
| 5218 | } |
| 5219 | |
| 5220 | |
| 5221 | void MacroAssembler::AssertFunction(Register object) { |
| 5222 | if (emit_debug_code()) { |
| 5223 | STATIC_ASSERT(kSmiTag == 0); |
| 5224 | SmiTst(object, t8); |
| 5225 | Check(ne, kOperandIsASmiAndNotAFunction, t8, Operand(zero_reg)); |
| 5226 | GetObjectType(object, t8, t8); |
| 5227 | Check(eq, kOperandIsNotAFunction, t8, Operand(JS_FUNCTION_TYPE)); |
| 5228 | } |
| 5229 | } |
| 5230 | |
| 5231 | |
| 5232 | void MacroAssembler::AssertBoundFunction(Register object) { |
| 5233 | if (emit_debug_code()) { |
| 5234 | STATIC_ASSERT(kSmiTag == 0); |
| 5235 | SmiTst(object, t8); |
| 5236 | Check(ne, kOperandIsASmiAndNotABoundFunction, t8, Operand(zero_reg)); |
| 5237 | GetObjectType(object, t8, t8); |
| 5238 | Check(eq, kOperandIsNotABoundFunction, t8, Operand(JS_BOUND_FUNCTION_TYPE)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5239 | } |
| 5240 | } |
| 5241 | |
| 5242 | |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame^] | 5243 | void MacroAssembler::AssertReceiver(Register object) { |
| 5244 | if (emit_debug_code()) { |
| 5245 | STATIC_ASSERT(kSmiTag == 0); |
| 5246 | SmiTst(object, t8); |
| 5247 | Check(ne, kOperandIsASmiAndNotAReceiver, t8, Operand(zero_reg)); |
| 5248 | GetObjectType(object, t8, t8); |
| 5249 | Check(ge, kOperandIsNotAReceiver, t8, Operand(FIRST_JS_RECEIVER_TYPE)); |
| 5250 | } |
| 5251 | } |
| 5252 | |
| 5253 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5254 | void MacroAssembler::AssertUndefinedOrAllocationSite(Register object, |
| 5255 | Register scratch) { |
| 5256 | if (emit_debug_code()) { |
| 5257 | Label done_checking; |
| 5258 | AssertNotSmi(object); |
| 5259 | LoadRoot(scratch, Heap::kUndefinedValueRootIndex); |
| 5260 | Branch(&done_checking, eq, object, Operand(scratch)); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 5261 | lw(t8, FieldMemOperand(object, HeapObject::kMapOffset)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5262 | LoadRoot(scratch, Heap::kAllocationSiteMapRootIndex); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 5263 | Assert(eq, kExpectedUndefinedOrCell, t8, Operand(scratch)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5264 | bind(&done_checking); |
| 5265 | } |
| 5266 | } |
| 5267 | |
| 5268 | |
| 5269 | void MacroAssembler::AssertIsRoot(Register reg, Heap::RootListIndex index) { |
| 5270 | if (emit_debug_code()) { |
| 5271 | DCHECK(!reg.is(at)); |
| 5272 | LoadRoot(at, index); |
| 5273 | Check(eq, kHeapNumberMapRegisterClobbered, reg, Operand(at)); |
| 5274 | } |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5275 | } |
| 5276 | |
| 5277 | |
| 5278 | void MacroAssembler::JumpIfNotHeapNumber(Register object, |
| 5279 | Register heap_number_map, |
| 5280 | Register scratch, |
| 5281 | Label* on_not_heap_number) { |
| 5282 | lw(scratch, FieldMemOperand(object, HeapObject::kMapOffset)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5283 | AssertIsRoot(heap_number_map, Heap::kHeapNumberMapRootIndex); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5284 | Branch(on_not_heap_number, ne, scratch, Operand(heap_number_map)); |
| 5285 | } |
| 5286 | |
| 5287 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5288 | void MacroAssembler::JumpIfNonSmisNotBothSequentialOneByteStrings( |
| 5289 | Register first, Register second, Register scratch1, Register scratch2, |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5290 | Label* failure) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5291 | // Test that both first and second are sequential one-byte strings. |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5292 | // Assume that they are non-smis. |
| 5293 | lw(scratch1, FieldMemOperand(first, HeapObject::kMapOffset)); |
| 5294 | lw(scratch2, FieldMemOperand(second, HeapObject::kMapOffset)); |
| 5295 | lbu(scratch1, FieldMemOperand(scratch1, Map::kInstanceTypeOffset)); |
| 5296 | lbu(scratch2, FieldMemOperand(scratch2, Map::kInstanceTypeOffset)); |
| 5297 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5298 | JumpIfBothInstanceTypesAreNotSequentialOneByte(scratch1, scratch2, scratch1, |
| 5299 | scratch2, failure); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5300 | } |
| 5301 | |
| 5302 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5303 | void MacroAssembler::JumpIfNotBothSequentialOneByteStrings(Register first, |
| 5304 | Register second, |
| 5305 | Register scratch1, |
| 5306 | Register scratch2, |
| 5307 | Label* failure) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5308 | // Check that neither is a smi. |
| 5309 | STATIC_ASSERT(kSmiTag == 0); |
| 5310 | And(scratch1, first, Operand(second)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5311 | JumpIfSmi(scratch1, failure); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5312 | JumpIfNonSmisNotBothSequentialOneByteStrings(first, second, scratch1, |
| 5313 | scratch2, failure); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5314 | } |
| 5315 | |
| 5316 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5317 | void MacroAssembler::JumpIfBothInstanceTypesAreNotSequentialOneByte( |
| 5318 | Register first, Register second, Register scratch1, Register scratch2, |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5319 | Label* failure) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5320 | const int kFlatOneByteStringMask = |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5321 | kIsNotStringMask | kStringEncodingMask | kStringRepresentationMask; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5322 | const int kFlatOneByteStringTag = |
| 5323 | kStringTag | kOneByteStringTag | kSeqStringTag; |
| 5324 | DCHECK(kFlatOneByteStringTag <= 0xffff); // Ensure this fits 16-bit immed. |
| 5325 | andi(scratch1, first, kFlatOneByteStringMask); |
| 5326 | Branch(failure, ne, scratch1, Operand(kFlatOneByteStringTag)); |
| 5327 | andi(scratch2, second, kFlatOneByteStringMask); |
| 5328 | Branch(failure, ne, scratch2, Operand(kFlatOneByteStringTag)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5329 | } |
| 5330 | |
| 5331 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5332 | void MacroAssembler::JumpIfInstanceTypeIsNotSequentialOneByte(Register type, |
| 5333 | Register scratch, |
| 5334 | Label* failure) { |
| 5335 | const int kFlatOneByteStringMask = |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5336 | kIsNotStringMask | kStringEncodingMask | kStringRepresentationMask; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5337 | const int kFlatOneByteStringTag = |
| 5338 | kStringTag | kOneByteStringTag | kSeqStringTag; |
| 5339 | And(scratch, type, Operand(kFlatOneByteStringMask)); |
| 5340 | Branch(failure, ne, scratch, Operand(kFlatOneByteStringTag)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5341 | } |
| 5342 | |
| 5343 | |
| 5344 | static const int kRegisterPassedArguments = 4; |
| 5345 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5346 | int MacroAssembler::CalculateStackPassedWords(int num_reg_arguments, |
| 5347 | int num_double_arguments) { |
| 5348 | int stack_passed_words = 0; |
| 5349 | num_reg_arguments += 2 * num_double_arguments; |
| 5350 | |
| 5351 | // Up to four simple arguments are passed in registers a0..a3. |
| 5352 | if (num_reg_arguments > kRegisterPassedArguments) { |
| 5353 | stack_passed_words += num_reg_arguments - kRegisterPassedArguments; |
| 5354 | } |
| 5355 | stack_passed_words += kCArgSlotCount; |
| 5356 | return stack_passed_words; |
| 5357 | } |
| 5358 | |
| 5359 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5360 | void MacroAssembler::EmitSeqStringSetCharCheck(Register string, |
| 5361 | Register index, |
| 5362 | Register value, |
| 5363 | Register scratch, |
| 5364 | uint32_t encoding_mask) { |
| 5365 | Label is_object; |
| 5366 | SmiTst(string, at); |
| 5367 | Check(ne, kNonObject, at, Operand(zero_reg)); |
| 5368 | |
| 5369 | lw(at, FieldMemOperand(string, HeapObject::kMapOffset)); |
| 5370 | lbu(at, FieldMemOperand(at, Map::kInstanceTypeOffset)); |
| 5371 | |
| 5372 | andi(at, at, kStringRepresentationMask | kStringEncodingMask); |
| 5373 | li(scratch, Operand(encoding_mask)); |
| 5374 | Check(eq, kUnexpectedStringType, at, Operand(scratch)); |
| 5375 | |
| 5376 | // The index is assumed to be untagged coming in, tag it to compare with the |
| 5377 | // string length without using a temp register, it is restored at the end of |
| 5378 | // this function. |
| 5379 | Label index_tag_ok, index_tag_bad; |
| 5380 | TrySmiTag(index, scratch, &index_tag_bad); |
| 5381 | Branch(&index_tag_ok); |
| 5382 | bind(&index_tag_bad); |
| 5383 | Abort(kIndexIsTooLarge); |
| 5384 | bind(&index_tag_ok); |
| 5385 | |
| 5386 | lw(at, FieldMemOperand(string, String::kLengthOffset)); |
| 5387 | Check(lt, kIndexIsTooLarge, index, Operand(at)); |
| 5388 | |
| 5389 | DCHECK(Smi::FromInt(0) == 0); |
| 5390 | Check(ge, kIndexIsNegative, index, Operand(zero_reg)); |
| 5391 | |
| 5392 | SmiUntag(index, index); |
| 5393 | } |
| 5394 | |
| 5395 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5396 | void MacroAssembler::PrepareCallCFunction(int num_reg_arguments, |
| 5397 | int num_double_arguments, |
| 5398 | Register scratch) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5399 | int frame_alignment = ActivationFrameAlignment(); |
| 5400 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5401 | // Up to four simple arguments are passed in registers a0..a3. |
| 5402 | // Those four arguments must have reserved argument slots on the stack for |
| 5403 | // mips, even though those argument slots are not normally used. |
| 5404 | // Remaining arguments are pushed on the stack, above (higher address than) |
| 5405 | // the argument slots. |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5406 | int stack_passed_arguments = CalculateStackPassedWords( |
| 5407 | num_reg_arguments, num_double_arguments); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5408 | if (frame_alignment > kPointerSize) { |
| 5409 | // Make stack end at alignment and make room for num_arguments - 4 words |
| 5410 | // and the original value of sp. |
| 5411 | mov(scratch, sp); |
| 5412 | Subu(sp, sp, Operand((stack_passed_arguments + 1) * kPointerSize)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5413 | DCHECK(base::bits::IsPowerOfTwo32(frame_alignment)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5414 | And(sp, sp, Operand(-frame_alignment)); |
| 5415 | sw(scratch, MemOperand(sp, stack_passed_arguments * kPointerSize)); |
| 5416 | } else { |
| 5417 | Subu(sp, sp, Operand(stack_passed_arguments * kPointerSize)); |
| 5418 | } |
| 5419 | } |
| 5420 | |
| 5421 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5422 | void MacroAssembler::PrepareCallCFunction(int num_reg_arguments, |
| 5423 | Register scratch) { |
| 5424 | PrepareCallCFunction(num_reg_arguments, 0, scratch); |
| 5425 | } |
| 5426 | |
| 5427 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5428 | void MacroAssembler::CallCFunction(ExternalReference function, |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5429 | int num_reg_arguments, |
| 5430 | int num_double_arguments) { |
| 5431 | li(t8, Operand(function)); |
| 5432 | CallCFunctionHelper(t8, num_reg_arguments, num_double_arguments); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5433 | } |
| 5434 | |
| 5435 | |
| 5436 | void MacroAssembler::CallCFunction(Register function, |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5437 | int num_reg_arguments, |
| 5438 | int num_double_arguments) { |
| 5439 | CallCFunctionHelper(function, num_reg_arguments, num_double_arguments); |
| 5440 | } |
| 5441 | |
| 5442 | |
| 5443 | void MacroAssembler::CallCFunction(ExternalReference function, |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5444 | int num_arguments) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5445 | CallCFunction(function, num_arguments, 0); |
| 5446 | } |
| 5447 | |
| 5448 | |
| 5449 | void MacroAssembler::CallCFunction(Register function, |
| 5450 | int num_arguments) { |
| 5451 | CallCFunction(function, num_arguments, 0); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5452 | } |
| 5453 | |
| 5454 | |
| 5455 | void MacroAssembler::CallCFunctionHelper(Register function, |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5456 | int num_reg_arguments, |
| 5457 | int num_double_arguments) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5458 | DCHECK(has_frame()); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5459 | // Make sure that the stack is aligned before calling a C function unless |
| 5460 | // running in the simulator. The simulator has its own alignment check which |
| 5461 | // provides more information. |
| 5462 | // The argument stots are presumed to have been set up by |
| 5463 | // PrepareCallCFunction. The C function must be called via t9, for mips ABI. |
| 5464 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5465 | #if V8_HOST_ARCH_MIPS |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5466 | if (emit_debug_code()) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5467 | int frame_alignment = base::OS::ActivationFrameAlignment(); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5468 | int frame_alignment_mask = frame_alignment - 1; |
| 5469 | if (frame_alignment > kPointerSize) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5470 | DCHECK(base::bits::IsPowerOfTwo32(frame_alignment)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5471 | Label alignment_as_expected; |
| 5472 | And(at, sp, Operand(frame_alignment_mask)); |
| 5473 | Branch(&alignment_as_expected, eq, at, Operand(zero_reg)); |
| 5474 | // Don't use Check here, as it will call Runtime_Abort possibly |
| 5475 | // re-entering here. |
| 5476 | stop("Unexpected alignment in CallCFunction"); |
| 5477 | bind(&alignment_as_expected); |
| 5478 | } |
| 5479 | } |
| 5480 | #endif // V8_HOST_ARCH_MIPS |
| 5481 | |
| 5482 | // Just call directly. The function called cannot cause a GC, or |
| 5483 | // allow preemption, so the return address in the link register |
| 5484 | // stays correct. |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5485 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5486 | if (!function.is(t9)) { |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 5487 | mov(t9, function); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5488 | function = t9; |
| 5489 | } |
| 5490 | |
| 5491 | Call(function); |
| 5492 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5493 | int stack_passed_arguments = CalculateStackPassedWords( |
| 5494 | num_reg_arguments, num_double_arguments); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5495 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5496 | if (base::OS::ActivationFrameAlignment() > kPointerSize) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5497 | lw(sp, MemOperand(sp, stack_passed_arguments * kPointerSize)); |
| 5498 | } else { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 5499 | Addu(sp, sp, Operand(stack_passed_arguments * kPointerSize)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5500 | } |
| 5501 | } |
| 5502 | |
| 5503 | |
| 5504 | #undef BRANCH_ARGS_CHECK |
| 5505 | |
| 5506 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5507 | void MacroAssembler::CheckPageFlag( |
| 5508 | Register object, |
| 5509 | Register scratch, |
| 5510 | int mask, |
| 5511 | Condition cc, |
| 5512 | Label* condition_met) { |
| 5513 | And(scratch, object, Operand(~Page::kPageAlignmentMask)); |
| 5514 | lw(scratch, MemOperand(scratch, MemoryChunk::kFlagsOffset)); |
| 5515 | And(scratch, scratch, Operand(mask)); |
| 5516 | Branch(condition_met, cc, scratch, Operand(zero_reg)); |
| 5517 | } |
| 5518 | |
| 5519 | |
| 5520 | void MacroAssembler::JumpIfBlack(Register object, |
| 5521 | Register scratch0, |
| 5522 | Register scratch1, |
| 5523 | Label* on_black) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 5524 | HasColor(object, scratch0, scratch1, on_black, 1, 1); // kBlackBitPattern. |
| 5525 | DCHECK(strcmp(Marking::kBlackBitPattern, "11") == 0); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5526 | } |
| 5527 | |
| 5528 | |
| 5529 | void MacroAssembler::HasColor(Register object, |
| 5530 | Register bitmap_scratch, |
| 5531 | Register mask_scratch, |
| 5532 | Label* has_color, |
| 5533 | int first_bit, |
| 5534 | int second_bit) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5535 | DCHECK(!AreAliased(object, bitmap_scratch, mask_scratch, t8)); |
| 5536 | DCHECK(!AreAliased(object, bitmap_scratch, mask_scratch, t9)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5537 | |
| 5538 | GetMarkBits(object, bitmap_scratch, mask_scratch); |
| 5539 | |
| 5540 | Label other_color, word_boundary; |
| 5541 | lw(t9, MemOperand(bitmap_scratch, MemoryChunk::kHeaderSize)); |
| 5542 | And(t8, t9, Operand(mask_scratch)); |
| 5543 | Branch(&other_color, first_bit == 1 ? eq : ne, t8, Operand(zero_reg)); |
| 5544 | // Shift left 1 by adding. |
| 5545 | Addu(mask_scratch, mask_scratch, Operand(mask_scratch)); |
| 5546 | Branch(&word_boundary, eq, mask_scratch, Operand(zero_reg)); |
| 5547 | And(t8, t9, Operand(mask_scratch)); |
| 5548 | Branch(has_color, second_bit == 1 ? ne : eq, t8, Operand(zero_reg)); |
| 5549 | jmp(&other_color); |
| 5550 | |
| 5551 | bind(&word_boundary); |
| 5552 | lw(t9, MemOperand(bitmap_scratch, MemoryChunk::kHeaderSize + kPointerSize)); |
| 5553 | And(t9, t9, Operand(1)); |
| 5554 | Branch(has_color, second_bit == 1 ? ne : eq, t9, Operand(zero_reg)); |
| 5555 | bind(&other_color); |
| 5556 | } |
| 5557 | |
| 5558 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5559 | void MacroAssembler::GetMarkBits(Register addr_reg, |
| 5560 | Register bitmap_reg, |
| 5561 | Register mask_reg) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5562 | DCHECK(!AreAliased(addr_reg, bitmap_reg, mask_reg, no_reg)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5563 | And(bitmap_reg, addr_reg, Operand(~Page::kPageAlignmentMask)); |
| 5564 | Ext(mask_reg, addr_reg, kPointerSizeLog2, Bitmap::kBitsPerCellLog2); |
| 5565 | const int kLowBits = kPointerSizeLog2 + Bitmap::kBitsPerCellLog2; |
| 5566 | Ext(t8, addr_reg, kLowBits, kPageSizeBits - kLowBits); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame^] | 5567 | Lsa(bitmap_reg, bitmap_reg, t8, kPointerSizeLog2, t8); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5568 | li(t8, Operand(1)); |
| 5569 | sllv(mask_reg, t8, mask_reg); |
| 5570 | } |
| 5571 | |
| 5572 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 5573 | void MacroAssembler::JumpIfWhite(Register value, Register bitmap_scratch, |
| 5574 | Register mask_scratch, Register load_scratch, |
| 5575 | Label* value_is_white) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5576 | DCHECK(!AreAliased(value, bitmap_scratch, mask_scratch, t8)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5577 | GetMarkBits(value, bitmap_scratch, mask_scratch); |
| 5578 | |
| 5579 | // 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] | 5580 | DCHECK(strcmp(Marking::kWhiteBitPattern, "00") == 0); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 5581 | DCHECK(strcmp(Marking::kBlackBitPattern, "11") == 0); |
| 5582 | DCHECK(strcmp(Marking::kGreyBitPattern, "10") == 0); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5583 | DCHECK(strcmp(Marking::kImpossibleBitPattern, "01") == 0); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5584 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5585 | // Since both black and grey have a 1 in the first position and white does |
| 5586 | // not have a 1 there we only need to check one bit. |
| 5587 | lw(load_scratch, MemOperand(bitmap_scratch, MemoryChunk::kHeaderSize)); |
| 5588 | And(t8, mask_scratch, load_scratch); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 5589 | Branch(value_is_white, eq, t8, Operand(zero_reg)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5590 | } |
| 5591 | |
| 5592 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 5593 | void MacroAssembler::LoadInstanceDescriptors(Register map, |
| 5594 | Register descriptors) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5595 | lw(descriptors, FieldMemOperand(map, Map::kDescriptorsOffset)); |
| 5596 | } |
| 5597 | |
| 5598 | |
| 5599 | void MacroAssembler::NumberOfOwnDescriptors(Register dst, Register map) { |
| 5600 | lw(dst, FieldMemOperand(map, Map::kBitField3Offset)); |
| 5601 | DecodeField<Map::NumberOfOwnDescriptorsBits>(dst); |
| 5602 | } |
| 5603 | |
| 5604 | |
| 5605 | void MacroAssembler::EnumLength(Register dst, Register map) { |
| 5606 | STATIC_ASSERT(Map::EnumLengthBits::kShift == 0); |
| 5607 | lw(dst, FieldMemOperand(map, Map::kBitField3Offset)); |
| 5608 | And(dst, dst, Operand(Map::EnumLengthBits::kMask)); |
| 5609 | SmiTag(dst); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 5610 | } |
| 5611 | |
| 5612 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 5613 | void MacroAssembler::LoadAccessor(Register dst, Register holder, |
| 5614 | int accessor_index, |
| 5615 | AccessorComponent accessor) { |
| 5616 | lw(dst, FieldMemOperand(holder, HeapObject::kMapOffset)); |
| 5617 | LoadInstanceDescriptors(dst, dst); |
| 5618 | lw(dst, |
| 5619 | FieldMemOperand(dst, DescriptorArray::GetValueOffset(accessor_index))); |
| 5620 | int offset = accessor == ACCESSOR_GETTER ? AccessorPair::kGetterOffset |
| 5621 | : AccessorPair::kSetterOffset; |
| 5622 | lw(dst, FieldMemOperand(dst, offset)); |
| 5623 | } |
| 5624 | |
| 5625 | |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame^] | 5626 | void MacroAssembler::CheckEnumCache(Label* call_runtime) { |
| 5627 | Register null_value = t1; |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5628 | Register empty_fixed_array_value = t2; |
| 5629 | LoadRoot(empty_fixed_array_value, Heap::kEmptyFixedArrayRootIndex); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5630 | Label next, start; |
| 5631 | mov(a2, a0); |
| 5632 | |
| 5633 | // Check if the enum length field is properly initialized, indicating that |
| 5634 | // there is an enum cache. |
| 5635 | lw(a1, FieldMemOperand(a2, HeapObject::kMapOffset)); |
| 5636 | |
| 5637 | EnumLength(a3, a1); |
| 5638 | Branch( |
| 5639 | call_runtime, eq, a3, Operand(Smi::FromInt(kInvalidEnumCacheSentinel))); |
| 5640 | |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame^] | 5641 | LoadRoot(null_value, Heap::kNullValueRootIndex); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5642 | jmp(&start); |
| 5643 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5644 | bind(&next); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5645 | lw(a1, FieldMemOperand(a2, HeapObject::kMapOffset)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5646 | |
| 5647 | // For all objects but the receiver, check that the cache is empty. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5648 | EnumLength(a3, a1); |
| 5649 | Branch(call_runtime, ne, a3, Operand(Smi::FromInt(0))); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5650 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5651 | bind(&start); |
| 5652 | |
| 5653 | // Check that there are no elements. Register a2 contains the current JS |
| 5654 | // object we've reached through the prototype chain. |
| 5655 | Label no_elements; |
| 5656 | lw(a2, FieldMemOperand(a2, JSObject::kElementsOffset)); |
| 5657 | Branch(&no_elements, eq, a2, Operand(empty_fixed_array_value)); |
| 5658 | |
| 5659 | // Second chance, the object may be using the empty slow element dictionary. |
| 5660 | LoadRoot(at, Heap::kEmptySlowElementDictionaryRootIndex); |
| 5661 | Branch(call_runtime, ne, a2, Operand(at)); |
| 5662 | |
| 5663 | bind(&no_elements); |
| 5664 | lw(a2, FieldMemOperand(a1, Map::kPrototypeOffset)); |
| 5665 | Branch(&next, ne, a2, Operand(null_value)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5666 | } |
| 5667 | |
| 5668 | |
| 5669 | void MacroAssembler::ClampUint8(Register output_reg, Register input_reg) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5670 | DCHECK(!output_reg.is(input_reg)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5671 | Label done; |
| 5672 | li(output_reg, Operand(255)); |
| 5673 | // Normal branch: nop in delay slot. |
| 5674 | Branch(&done, gt, input_reg, Operand(output_reg)); |
| 5675 | // Use delay slot in this branch. |
| 5676 | Branch(USE_DELAY_SLOT, &done, lt, input_reg, Operand(zero_reg)); |
| 5677 | mov(output_reg, zero_reg); // In delay slot. |
| 5678 | mov(output_reg, input_reg); // Value is in range 0..255. |
| 5679 | bind(&done); |
| 5680 | } |
| 5681 | |
| 5682 | |
| 5683 | void MacroAssembler::ClampDoubleToUint8(Register result_reg, |
| 5684 | DoubleRegister input_reg, |
| 5685 | DoubleRegister temp_double_reg) { |
| 5686 | Label above_zero; |
| 5687 | Label done; |
| 5688 | Label in_bounds; |
| 5689 | |
| 5690 | Move(temp_double_reg, 0.0); |
| 5691 | BranchF(&above_zero, NULL, gt, input_reg, temp_double_reg); |
| 5692 | |
| 5693 | // Double value is less than zero, NaN or Inf, return 0. |
| 5694 | mov(result_reg, zero_reg); |
| 5695 | Branch(&done); |
| 5696 | |
| 5697 | // Double value is >= 255, return 255. |
| 5698 | bind(&above_zero); |
| 5699 | Move(temp_double_reg, 255.0); |
| 5700 | BranchF(&in_bounds, NULL, le, input_reg, temp_double_reg); |
| 5701 | li(result_reg, Operand(255)); |
| 5702 | Branch(&done); |
| 5703 | |
| 5704 | // In 0-255 range, round and truncate. |
| 5705 | bind(&in_bounds); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5706 | cvt_w_d(temp_double_reg, input_reg); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5707 | mfc1(result_reg, temp_double_reg); |
| 5708 | bind(&done); |
| 5709 | } |
| 5710 | |
| 5711 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5712 | void MacroAssembler::TestJSArrayForAllocationMemento( |
| 5713 | Register receiver_reg, |
| 5714 | Register scratch_reg, |
| 5715 | Label* no_memento_found, |
| 5716 | Condition cond, |
| 5717 | Label* allocation_memento_present) { |
| 5718 | ExternalReference new_space_start = |
| 5719 | ExternalReference::new_space_start(isolate()); |
| 5720 | ExternalReference new_space_allocation_top = |
| 5721 | ExternalReference::new_space_allocation_top_address(isolate()); |
| 5722 | Addu(scratch_reg, receiver_reg, |
| 5723 | Operand(JSArray::kSize + AllocationMemento::kSize - kHeapObjectTag)); |
| 5724 | Branch(no_memento_found, lt, scratch_reg, Operand(new_space_start)); |
| 5725 | li(at, Operand(new_space_allocation_top)); |
| 5726 | lw(at, MemOperand(at)); |
| 5727 | Branch(no_memento_found, gt, scratch_reg, Operand(at)); |
| 5728 | lw(scratch_reg, MemOperand(scratch_reg, -AllocationMemento::kSize)); |
| 5729 | if (allocation_memento_present) { |
| 5730 | Branch(allocation_memento_present, cond, scratch_reg, |
| 5731 | Operand(isolate()->factory()->allocation_memento_map())); |
| 5732 | } |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5733 | } |
| 5734 | |
| 5735 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5736 | Register GetRegisterThatIsNotOneOf(Register reg1, |
| 5737 | Register reg2, |
| 5738 | Register reg3, |
| 5739 | Register reg4, |
| 5740 | Register reg5, |
| 5741 | Register reg6) { |
| 5742 | RegList regs = 0; |
| 5743 | if (reg1.is_valid()) regs |= reg1.bit(); |
| 5744 | if (reg2.is_valid()) regs |= reg2.bit(); |
| 5745 | if (reg3.is_valid()) regs |= reg3.bit(); |
| 5746 | if (reg4.is_valid()) regs |= reg4.bit(); |
| 5747 | if (reg5.is_valid()) regs |= reg5.bit(); |
| 5748 | if (reg6.is_valid()) regs |= reg6.bit(); |
| 5749 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 5750 | const RegisterConfiguration* config = |
| 5751 | RegisterConfiguration::ArchDefault(RegisterConfiguration::CRANKSHAFT); |
| 5752 | for (int i = 0; i < config->num_allocatable_general_registers(); ++i) { |
| 5753 | int code = config->GetAllocatableGeneralCode(i); |
| 5754 | Register candidate = Register::from_code(code); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5755 | if (regs & candidate.bit()) continue; |
| 5756 | return candidate; |
| 5757 | } |
| 5758 | UNREACHABLE(); |
| 5759 | return no_reg; |
| 5760 | } |
| 5761 | |
| 5762 | |
| 5763 | void MacroAssembler::JumpIfDictionaryInPrototypeChain( |
| 5764 | Register object, |
| 5765 | Register scratch0, |
| 5766 | Register scratch1, |
| 5767 | Label* found) { |
| 5768 | DCHECK(!scratch1.is(scratch0)); |
| 5769 | Factory* factory = isolate()->factory(); |
| 5770 | Register current = scratch0; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 5771 | Label loop_again, end; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5772 | |
| 5773 | // Scratch contained elements pointer. |
| 5774 | Move(current, object); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 5775 | lw(current, FieldMemOperand(current, HeapObject::kMapOffset)); |
| 5776 | lw(current, FieldMemOperand(current, Map::kPrototypeOffset)); |
| 5777 | Branch(&end, eq, current, Operand(factory->null_value())); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5778 | |
| 5779 | // Loop based on the map going up the prototype chain. |
| 5780 | bind(&loop_again); |
| 5781 | lw(current, FieldMemOperand(current, HeapObject::kMapOffset)); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 5782 | lbu(scratch1, FieldMemOperand(current, Map::kInstanceTypeOffset)); |
| 5783 | STATIC_ASSERT(JS_VALUE_TYPE < JS_OBJECT_TYPE); |
| 5784 | STATIC_ASSERT(JS_PROXY_TYPE < JS_OBJECT_TYPE); |
| 5785 | Branch(found, lo, scratch1, Operand(JS_OBJECT_TYPE)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5786 | lb(scratch1, FieldMemOperand(current, Map::kBitField2Offset)); |
| 5787 | DecodeField<Map::ElementsKindBits>(scratch1); |
| 5788 | Branch(found, eq, scratch1, Operand(DICTIONARY_ELEMENTS)); |
| 5789 | lw(current, FieldMemOperand(current, Map::kPrototypeOffset)); |
| 5790 | Branch(&loop_again, ne, current, Operand(factory->null_value())); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 5791 | |
| 5792 | bind(&end); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5793 | } |
| 5794 | |
| 5795 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 5796 | bool AreAliased(Register reg1, Register reg2, Register reg3, Register reg4, |
| 5797 | Register reg5, Register reg6, Register reg7, Register reg8, |
| 5798 | Register reg9, Register reg10) { |
| 5799 | int n_of_valid_regs = reg1.is_valid() + reg2.is_valid() + reg3.is_valid() + |
| 5800 | reg4.is_valid() + reg5.is_valid() + reg6.is_valid() + |
| 5801 | reg7.is_valid() + reg8.is_valid() + reg9.is_valid() + |
| 5802 | reg10.is_valid(); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5803 | |
| 5804 | RegList regs = 0; |
| 5805 | if (reg1.is_valid()) regs |= reg1.bit(); |
| 5806 | if (reg2.is_valid()) regs |= reg2.bit(); |
| 5807 | if (reg3.is_valid()) regs |= reg3.bit(); |
| 5808 | if (reg4.is_valid()) regs |= reg4.bit(); |
| 5809 | if (reg5.is_valid()) regs |= reg5.bit(); |
| 5810 | if (reg6.is_valid()) regs |= reg6.bit(); |
| 5811 | if (reg7.is_valid()) regs |= reg7.bit(); |
| 5812 | if (reg8.is_valid()) regs |= reg8.bit(); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 5813 | if (reg9.is_valid()) regs |= reg9.bit(); |
| 5814 | if (reg10.is_valid()) regs |= reg10.bit(); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5815 | int n_of_non_aliasing_regs = NumRegs(regs); |
| 5816 | |
| 5817 | return n_of_valid_regs != n_of_non_aliasing_regs; |
| 5818 | } |
| 5819 | |
| 5820 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 5821 | CodePatcher::CodePatcher(Isolate* isolate, byte* address, int instructions, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5822 | FlushICache flush_cache) |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5823 | : address_(address), |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5824 | size_(instructions * Assembler::kInstrSize), |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 5825 | masm_(isolate, address, size_ + Assembler::kGap, CodeObjectRequired::kNo), |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5826 | flush_cache_(flush_cache) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5827 | // Create a new macro assembler pointing to the address of the code to patch. |
| 5828 | // The size is adjusted with kGap on order for the assembler to generate size |
| 5829 | // bytes of instructions without failing with buffer size constraints. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5830 | DCHECK(masm_.reloc_info_writer.pos() == address_ + size_ + Assembler::kGap); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5831 | } |
| 5832 | |
| 5833 | |
| 5834 | CodePatcher::~CodePatcher() { |
| 5835 | // Indicate that code has changed. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5836 | if (flush_cache_ == FLUSH) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 5837 | Assembler::FlushICache(masm_.isolate(), address_, size_); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5838 | } |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5839 | |
| 5840 | // Check that the code was patched as expected. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5841 | DCHECK(masm_.pc_ == address_ + size_); |
| 5842 | DCHECK(masm_.reloc_info_writer.pos() == address_ + size_ + Assembler::kGap); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5843 | } |
| 5844 | |
| 5845 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 5846 | void CodePatcher::Emit(Instr instr) { |
| 5847 | masm()->emit(instr); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5848 | } |
| 5849 | |
| 5850 | |
| 5851 | void CodePatcher::Emit(Address addr) { |
| 5852 | masm()->emit(reinterpret_cast<Instr>(addr)); |
| 5853 | } |
| 5854 | |
| 5855 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 5856 | void CodePatcher::ChangeBranchCondition(Instr current_instr, |
| 5857 | uint32_t new_opcode) { |
| 5858 | current_instr = (current_instr & ~kOpcodeMask) | new_opcode; |
| 5859 | masm_.emit(current_instr); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 5860 | } |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5861 | |
| 5862 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5863 | void MacroAssembler::TruncatingDiv(Register result, |
| 5864 | Register dividend, |
| 5865 | int32_t divisor) { |
| 5866 | DCHECK(!dividend.is(result)); |
| 5867 | DCHECK(!dividend.is(at)); |
| 5868 | DCHECK(!result.is(at)); |
| 5869 | base::MagicNumbersForDivision<uint32_t> mag = |
| 5870 | base::SignedDivisionByConstant(static_cast<uint32_t>(divisor)); |
| 5871 | li(at, Operand(mag.multiplier)); |
| 5872 | Mulh(result, dividend, Operand(at)); |
| 5873 | bool neg = (mag.multiplier & (static_cast<uint32_t>(1) << 31)) != 0; |
| 5874 | if (divisor > 0 && neg) { |
| 5875 | Addu(result, result, Operand(dividend)); |
| 5876 | } |
| 5877 | if (divisor < 0 && !neg && mag.multiplier > 0) { |
| 5878 | Subu(result, result, Operand(dividend)); |
| 5879 | } |
| 5880 | if (mag.shift > 0) sra(result, result, mag.shift); |
| 5881 | srl(at, dividend, 31); |
| 5882 | Addu(result, result, Operand(at)); |
| 5883 | } |
| 5884 | |
| 5885 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 5886 | } // namespace internal |
| 5887 | } // namespace v8 |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 5888 | |
Leon Clarke | f7060e2 | 2010-06-03 12:02:55 +0100 | [diff] [blame] | 5889 | #endif // V8_TARGET_ARCH_MIPS |