Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1 | // Copyright 2012 the V8 project authors. All rights reserved. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2 | // Use of this source code is governed by a BSD-style license that can be |
| 3 | // found in the LICENSE file. |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 4 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 5 | #include <limits.h> // For LONG_MIN, LONG_MAX. |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 6 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 7 | #include "src/v8.h" |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 8 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 9 | #if V8_TARGET_ARCH_MIPS |
Leon Clarke | f7060e2 | 2010-06-03 12:02:55 +0100 | [diff] [blame] | 10 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 11 | #include "src/base/bits.h" |
| 12 | #include "src/base/division-by-constant.h" |
| 13 | #include "src/bootstrapper.h" |
| 14 | #include "src/codegen.h" |
| 15 | #include "src/cpu-profiler.h" |
| 16 | #include "src/debug.h" |
| 17 | #include "src/isolate-inl.h" |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame^] | 18 | #include "src/runtime/runtime.h" |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 19 | |
| 20 | namespace v8 { |
| 21 | namespace internal { |
| 22 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 23 | MacroAssembler::MacroAssembler(Isolate* arg_isolate, void* buffer, int size) |
| 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 | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 28 | if (isolate() != NULL) { |
| 29 | code_object_ = Handle<Object>(isolate()->heap()->undefined_value(), |
| 30 | isolate()); |
| 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) { |
| 89 | sw(source, MemOperand(s6, index << kPointerSizeLog2)); |
| 90 | } |
| 91 | |
| 92 | |
| 93 | void MacroAssembler::StoreRoot(Register source, |
| 94 | Heap::RootListIndex index, |
| 95 | Condition cond, |
| 96 | Register src1, const Operand& src2) { |
| 97 | Branch(2, NegateCondition(cond), src1, src2); |
| 98 | sw(source, MemOperand(s6, index << kPointerSizeLog2)); |
| 99 | } |
| 100 | |
| 101 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 102 | // Push and pop all registers that can hold pointers. |
| 103 | void MacroAssembler::PushSafepointRegisters() { |
| 104 | // Safepoints expect a block of kNumSafepointRegisters values on the |
| 105 | // stack, so adjust the stack for unsaved registers. |
| 106 | const int num_unsaved = kNumSafepointRegisters - kNumSafepointSavedRegisters; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 107 | DCHECK(num_unsaved >= 0); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 108 | if (num_unsaved > 0) { |
| 109 | Subu(sp, sp, Operand(num_unsaved * kPointerSize)); |
| 110 | } |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 111 | MultiPush(kSafepointSavedRegisters); |
| 112 | } |
| 113 | |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 114 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 115 | void MacroAssembler::PopSafepointRegisters() { |
| 116 | const int num_unsaved = kNumSafepointRegisters - kNumSafepointSavedRegisters; |
| 117 | MultiPop(kSafepointSavedRegisters); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 118 | if (num_unsaved > 0) { |
| 119 | Addu(sp, sp, Operand(num_unsaved * kPointerSize)); |
| 120 | } |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 121 | } |
| 122 | |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 123 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 124 | void MacroAssembler::StoreToSafepointRegisterSlot(Register src, Register dst) { |
| 125 | sw(src, SafepointRegisterSlot(dst)); |
| 126 | } |
| 127 | |
| 128 | |
| 129 | void MacroAssembler::LoadFromSafepointRegisterSlot(Register dst, Register src) { |
| 130 | lw(dst, SafepointRegisterSlot(src)); |
| 131 | } |
| 132 | |
| 133 | |
| 134 | int MacroAssembler::SafepointRegisterStackIndex(int reg_code) { |
| 135 | // The registers are pushed starting with the highest encoding, |
| 136 | // which means that lowest encodings are closest to the stack pointer. |
| 137 | return kSafepointRegisterStackIndexMap[reg_code]; |
| 138 | } |
| 139 | |
| 140 | |
| 141 | MemOperand MacroAssembler::SafepointRegisterSlot(Register reg) { |
| 142 | return MemOperand(sp, SafepointRegisterStackIndex(reg.code()) * kPointerSize); |
| 143 | } |
| 144 | |
| 145 | |
| 146 | MemOperand MacroAssembler::SafepointRegistersAndDoublesSlot(Register reg) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 147 | UNIMPLEMENTED_MIPS(); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 148 | // General purpose registers are pushed last on the stack. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 149 | int doubles_size = FPURegister::NumAllocatableRegisters() * kDoubleSize; |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 150 | int register_offset = SafepointRegisterStackIndex(reg.code()) * kPointerSize; |
| 151 | return MemOperand(sp, doubles_size + register_offset); |
| 152 | } |
| 153 | |
| 154 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 155 | void MacroAssembler::InNewSpace(Register object, |
| 156 | Register scratch, |
| 157 | Condition cc, |
| 158 | Label* branch) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 159 | DCHECK(cc == eq || cc == ne); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 160 | And(scratch, object, Operand(ExternalReference::new_space_mask(isolate()))); |
| 161 | Branch(branch, cc, scratch, |
| 162 | Operand(ExternalReference::new_space_start(isolate()))); |
| 163 | } |
| 164 | |
| 165 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 166 | void MacroAssembler::RecordWriteField( |
| 167 | Register object, |
| 168 | int offset, |
| 169 | Register value, |
| 170 | Register dst, |
| 171 | RAStatus ra_status, |
| 172 | SaveFPRegsMode save_fp, |
| 173 | RememberedSetAction remembered_set_action, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 174 | SmiCheck smi_check, |
| 175 | PointersToHereCheck pointers_to_here_check_for_value) { |
| 176 | DCHECK(!AreAliased(value, dst, t8, object)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 177 | // First, check if a write barrier is even needed. The tests below |
| 178 | // catch stores of Smis. |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 179 | Label done; |
| 180 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 181 | // Skip barrier if writing a smi. |
| 182 | if (smi_check == INLINE_SMI_CHECK) { |
| 183 | JumpIfSmi(value, &done); |
| 184 | } |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 185 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 186 | // Although the object register is tagged, the offset is relative to the start |
| 187 | // of the object, so so offset must be a multiple of kPointerSize. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 188 | DCHECK(IsAligned(offset, kPointerSize)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 189 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 190 | Addu(dst, object, Operand(offset - kHeapObjectTag)); |
| 191 | if (emit_debug_code()) { |
| 192 | Label ok; |
| 193 | And(t8, dst, Operand((1 << kPointerSizeLog2) - 1)); |
| 194 | Branch(&ok, eq, t8, Operand(zero_reg)); |
| 195 | stop("Unaligned cell in write barrier"); |
| 196 | bind(&ok); |
| 197 | } |
| 198 | |
| 199 | RecordWrite(object, |
| 200 | dst, |
| 201 | value, |
| 202 | ra_status, |
| 203 | save_fp, |
| 204 | remembered_set_action, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 205 | OMIT_SMI_CHECK, |
| 206 | pointers_to_here_check_for_value); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 207 | |
| 208 | bind(&done); |
| 209 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 210 | // Clobber clobbered input registers when running with the debug-code flag |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 211 | // turned on to provoke errors. |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 212 | if (emit_debug_code()) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 213 | li(value, Operand(bit_cast<int32_t>(kZapValue + 4))); |
| 214 | li(dst, Operand(bit_cast<int32_t>(kZapValue + 8))); |
| 215 | } |
| 216 | } |
| 217 | |
| 218 | |
| 219 | // Will clobber 4 registers: object, map, dst, ip. The |
| 220 | // register 'object' contains a heap object pointer. |
| 221 | void MacroAssembler::RecordWriteForMap(Register object, |
| 222 | Register map, |
| 223 | Register dst, |
| 224 | RAStatus ra_status, |
| 225 | SaveFPRegsMode fp_mode) { |
| 226 | if (emit_debug_code()) { |
| 227 | DCHECK(!dst.is(at)); |
| 228 | lw(dst, FieldMemOperand(map, HeapObject::kMapOffset)); |
| 229 | Check(eq, |
| 230 | kWrongAddressOrValuePassedToRecordWrite, |
| 231 | dst, |
| 232 | Operand(isolate()->factory()->meta_map())); |
| 233 | } |
| 234 | |
| 235 | if (!FLAG_incremental_marking) { |
| 236 | return; |
| 237 | } |
| 238 | |
| 239 | if (emit_debug_code()) { |
| 240 | lw(at, FieldMemOperand(object, HeapObject::kMapOffset)); |
| 241 | Check(eq, |
| 242 | kWrongAddressOrValuePassedToRecordWrite, |
| 243 | map, |
| 244 | Operand(at)); |
| 245 | } |
| 246 | |
| 247 | Label done; |
| 248 | |
| 249 | // A single check of the map's pages interesting flag suffices, since it is |
| 250 | // only set during incremental collection, and then it's also guaranteed that |
| 251 | // the from object's page's interesting flag is also set. This optimization |
| 252 | // relies on the fact that maps can never be in new space. |
| 253 | CheckPageFlag(map, |
| 254 | map, // Used as scratch. |
| 255 | MemoryChunk::kPointersToHereAreInterestingMask, |
| 256 | eq, |
| 257 | &done); |
| 258 | |
| 259 | Addu(dst, object, Operand(HeapObject::kMapOffset - kHeapObjectTag)); |
| 260 | if (emit_debug_code()) { |
| 261 | Label ok; |
| 262 | And(at, dst, Operand((1 << kPointerSizeLog2) - 1)); |
| 263 | Branch(&ok, eq, at, Operand(zero_reg)); |
| 264 | stop("Unaligned cell in write barrier"); |
| 265 | bind(&ok); |
| 266 | } |
| 267 | |
| 268 | // Record the actual write. |
| 269 | if (ra_status == kRAHasNotBeenSaved) { |
| 270 | push(ra); |
| 271 | } |
| 272 | RecordWriteStub stub(isolate(), object, map, dst, OMIT_REMEMBERED_SET, |
| 273 | fp_mode); |
| 274 | CallStub(&stub); |
| 275 | if (ra_status == kRAHasNotBeenSaved) { |
| 276 | pop(ra); |
| 277 | } |
| 278 | |
| 279 | bind(&done); |
| 280 | |
| 281 | // Count number of write barriers in generated code. |
| 282 | isolate()->counters()->write_barriers_static()->Increment(); |
| 283 | IncrementCounter(isolate()->counters()->write_barriers_dynamic(), 1, at, dst); |
| 284 | |
| 285 | // Clobber clobbered registers when running with the debug-code flag |
| 286 | // turned on to provoke errors. |
| 287 | if (emit_debug_code()) { |
| 288 | li(dst, Operand(bit_cast<int32_t>(kZapValue + 12))); |
| 289 | li(map, Operand(bit_cast<int32_t>(kZapValue + 16))); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 290 | } |
| 291 | } |
| 292 | |
| 293 | |
| 294 | // Will clobber 4 registers: object, address, scratch, ip. The |
| 295 | // register 'object' contains a heap object pointer. The heap object |
| 296 | // tag is shifted away. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 297 | void MacroAssembler::RecordWrite( |
| 298 | Register object, |
| 299 | Register address, |
| 300 | Register value, |
| 301 | RAStatus ra_status, |
| 302 | SaveFPRegsMode fp_mode, |
| 303 | RememberedSetAction remembered_set_action, |
| 304 | SmiCheck smi_check, |
| 305 | PointersToHereCheck pointers_to_here_check_for_value) { |
| 306 | DCHECK(!AreAliased(object, address, value, t8)); |
| 307 | DCHECK(!AreAliased(object, address, value, t9)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 308 | |
| 309 | if (emit_debug_code()) { |
| 310 | lw(at, MemOperand(address)); |
| 311 | Assert( |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 312 | eq, kWrongAddressOrValuePassedToRecordWrite, at, Operand(value)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 313 | } |
Ben Murdoch | c7cc028 | 2012-03-05 14:35:55 +0000 | [diff] [blame] | 314 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 315 | if (remembered_set_action == OMIT_REMEMBERED_SET && |
| 316 | !FLAG_incremental_marking) { |
| 317 | return; |
| 318 | } |
| 319 | |
| 320 | // First, check if a write barrier is even needed. The tests below |
| 321 | // catch stores of smis and stores into the young generation. |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 322 | Label done; |
| 323 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 324 | if (smi_check == INLINE_SMI_CHECK) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 325 | DCHECK_EQ(0, kSmiTag); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 326 | JumpIfSmi(value, &done); |
| 327 | } |
| 328 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 329 | if (pointers_to_here_check_for_value != kPointersToHereAreAlwaysInteresting) { |
| 330 | CheckPageFlag(value, |
| 331 | value, // Used as scratch. |
| 332 | MemoryChunk::kPointersToHereAreInterestingMask, |
| 333 | eq, |
| 334 | &done); |
| 335 | } |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 336 | CheckPageFlag(object, |
| 337 | value, // Used as scratch. |
| 338 | MemoryChunk::kPointersFromHereAreInterestingMask, |
| 339 | eq, |
| 340 | &done); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 341 | |
| 342 | // Record the actual write. |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 343 | if (ra_status == kRAHasNotBeenSaved) { |
| 344 | push(ra); |
| 345 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 346 | RecordWriteStub stub(isolate(), object, value, address, remembered_set_action, |
| 347 | fp_mode); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 348 | CallStub(&stub); |
| 349 | if (ra_status == kRAHasNotBeenSaved) { |
| 350 | pop(ra); |
| 351 | } |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 352 | |
| 353 | bind(&done); |
| 354 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 355 | // Count number of write barriers in generated code. |
| 356 | isolate()->counters()->write_barriers_static()->Increment(); |
| 357 | IncrementCounter(isolate()->counters()->write_barriers_dynamic(), 1, at, |
| 358 | value); |
| 359 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 360 | // Clobber clobbered registers when running with the debug-code flag |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 361 | // turned on to provoke errors. |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 362 | if (emit_debug_code()) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 363 | li(address, Operand(bit_cast<int32_t>(kZapValue + 12))); |
| 364 | li(value, Operand(bit_cast<int32_t>(kZapValue + 16))); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 365 | } |
| 366 | } |
| 367 | |
| 368 | |
| 369 | void MacroAssembler::RememberedSetHelper(Register object, // For debug tests. |
| 370 | Register address, |
| 371 | Register scratch, |
| 372 | SaveFPRegsMode fp_mode, |
| 373 | RememberedSetFinalAction and_then) { |
| 374 | Label done; |
| 375 | if (emit_debug_code()) { |
| 376 | Label ok; |
| 377 | JumpIfNotInNewSpace(object, scratch, &ok); |
| 378 | stop("Remembered set pointer is in new space"); |
| 379 | bind(&ok); |
| 380 | } |
| 381 | // Load store buffer top. |
| 382 | ExternalReference store_buffer = |
| 383 | ExternalReference::store_buffer_top(isolate()); |
| 384 | li(t8, Operand(store_buffer)); |
| 385 | lw(scratch, MemOperand(t8)); |
| 386 | // Store pointer to buffer and increment buffer top. |
| 387 | sw(address, MemOperand(scratch)); |
| 388 | Addu(scratch, scratch, kPointerSize); |
| 389 | // Write back new top of buffer. |
| 390 | sw(scratch, MemOperand(t8)); |
| 391 | // Call stub on end of buffer. |
| 392 | // Check for end of buffer. |
| 393 | And(t8, scratch, Operand(StoreBuffer::kStoreBufferOverflowBit)); |
| 394 | if (and_then == kFallThroughAtEnd) { |
| 395 | Branch(&done, eq, t8, Operand(zero_reg)); |
| 396 | } else { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 397 | DCHECK(and_then == kReturnAtEnd); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 398 | Ret(eq, t8, Operand(zero_reg)); |
| 399 | } |
| 400 | push(ra); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 401 | StoreBufferOverflowStub store_buffer_overflow(isolate(), fp_mode); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 402 | CallStub(&store_buffer_overflow); |
| 403 | pop(ra); |
| 404 | bind(&done); |
| 405 | if (and_then == kReturnAtEnd) { |
| 406 | Ret(); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 407 | } |
| 408 | } |
| 409 | |
| 410 | |
| 411 | // ----------------------------------------------------------------------------- |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 412 | // Allocation support. |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 413 | |
| 414 | |
| 415 | void MacroAssembler::CheckAccessGlobalProxy(Register holder_reg, |
| 416 | Register scratch, |
| 417 | Label* miss) { |
| 418 | Label same_contexts; |
| 419 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 420 | DCHECK(!holder_reg.is(scratch)); |
| 421 | DCHECK(!holder_reg.is(at)); |
| 422 | DCHECK(!scratch.is(at)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 423 | |
| 424 | // Load current lexical context from the stack frame. |
| 425 | lw(scratch, MemOperand(fp, StandardFrameConstants::kContextOffset)); |
| 426 | // In debug mode, make sure the lexical context is set. |
| 427 | #ifdef DEBUG |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 428 | Check(ne, kWeShouldNotHaveAnEmptyLexicalContext, |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 429 | scratch, Operand(zero_reg)); |
| 430 | #endif |
| 431 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 432 | // Load the native context of the current context. |
| 433 | int offset = |
| 434 | Context::kHeaderSize + Context::GLOBAL_OBJECT_INDEX * kPointerSize; |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 435 | lw(scratch, FieldMemOperand(scratch, offset)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 436 | lw(scratch, FieldMemOperand(scratch, GlobalObject::kNativeContextOffset)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 437 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 438 | // Check the context is a native context. |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 439 | if (emit_debug_code()) { |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 440 | push(holder_reg); // Temporarily save holder on the stack. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 441 | // Read the first word and compare to the native_context_map. |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 442 | lw(holder_reg, FieldMemOperand(scratch, HeapObject::kMapOffset)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 443 | LoadRoot(at, Heap::kNativeContextMapRootIndex); |
| 444 | Check(eq, kJSGlobalObjectNativeContextShouldBeANativeContext, |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 445 | holder_reg, Operand(at)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 446 | pop(holder_reg); // Restore holder. |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 447 | } |
| 448 | |
| 449 | // Check if both contexts are the same. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 450 | lw(at, FieldMemOperand(holder_reg, JSGlobalProxy::kNativeContextOffset)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 451 | Branch(&same_contexts, eq, scratch, Operand(at)); |
| 452 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 453 | // Check the context is a native context. |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 454 | if (emit_debug_code()) { |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 455 | push(holder_reg); // Temporarily save holder on the stack. |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 456 | mov(holder_reg, at); // Move at to its holding place. |
| 457 | LoadRoot(at, Heap::kNullValueRootIndex); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 458 | Check(ne, kJSGlobalProxyContextShouldNotBeNull, |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 459 | holder_reg, Operand(at)); |
| 460 | |
| 461 | lw(holder_reg, FieldMemOperand(holder_reg, HeapObject::kMapOffset)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 462 | LoadRoot(at, Heap::kNativeContextMapRootIndex); |
| 463 | Check(eq, kJSGlobalObjectNativeContextShouldBeANativeContext, |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 464 | holder_reg, Operand(at)); |
| 465 | // Restore at is not needed. at is reloaded below. |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 466 | pop(holder_reg); // Restore holder. |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 467 | // Restore at to holder's context. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 468 | lw(at, FieldMemOperand(holder_reg, JSGlobalProxy::kNativeContextOffset)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 469 | } |
| 470 | |
| 471 | // Check that the security token in the calling global object is |
| 472 | // compatible with the security token in the receiving global |
| 473 | // object. |
| 474 | int token_offset = Context::kHeaderSize + |
| 475 | Context::SECURITY_TOKEN_INDEX * kPointerSize; |
| 476 | |
| 477 | lw(scratch, FieldMemOperand(scratch, token_offset)); |
| 478 | lw(at, FieldMemOperand(at, token_offset)); |
| 479 | Branch(miss, ne, scratch, Operand(at)); |
| 480 | |
| 481 | bind(&same_contexts); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 482 | } |
| 483 | |
| 484 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 485 | // Compute the hash code from the untagged key. This must be kept in sync with |
| 486 | // ComputeIntegerHash in utils.h and KeyedLoadGenericStub in |
| 487 | // code-stub-hydrogen.cc |
Ben Murdoch | c7cc028 | 2012-03-05 14:35:55 +0000 | [diff] [blame] | 488 | void MacroAssembler::GetNumberHash(Register reg0, Register scratch) { |
| 489 | // First of all we assign the hash seed to scratch. |
| 490 | LoadRoot(scratch, Heap::kHashSeedRootIndex); |
| 491 | SmiUntag(scratch); |
| 492 | |
| 493 | // Xor original key with a seed. |
| 494 | xor_(reg0, reg0, scratch); |
| 495 | |
| 496 | // Compute the hash code from the untagged key. This must be kept in sync |
| 497 | // with ComputeIntegerHash in utils.h. |
| 498 | // |
| 499 | // hash = ~hash + (hash << 15); |
| 500 | nor(scratch, reg0, zero_reg); |
| 501 | sll(at, reg0, 15); |
| 502 | addu(reg0, scratch, at); |
| 503 | |
| 504 | // hash = hash ^ (hash >> 12); |
| 505 | srl(at, reg0, 12); |
| 506 | xor_(reg0, reg0, at); |
| 507 | |
| 508 | // hash = hash + (hash << 2); |
| 509 | sll(at, reg0, 2); |
| 510 | addu(reg0, reg0, at); |
| 511 | |
| 512 | // hash = hash ^ (hash >> 4); |
| 513 | srl(at, reg0, 4); |
| 514 | xor_(reg0, reg0, at); |
| 515 | |
| 516 | // hash = hash * 2057; |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 517 | sll(scratch, reg0, 11); |
| 518 | sll(at, reg0, 3); |
| 519 | addu(reg0, reg0, at); |
| 520 | addu(reg0, reg0, scratch); |
Ben Murdoch | c7cc028 | 2012-03-05 14:35:55 +0000 | [diff] [blame] | 521 | |
| 522 | // hash = hash ^ (hash >> 16); |
| 523 | srl(at, reg0, 16); |
| 524 | xor_(reg0, reg0, at); |
| 525 | } |
| 526 | |
| 527 | |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 528 | void MacroAssembler::LoadFromNumberDictionary(Label* miss, |
| 529 | Register elements, |
| 530 | Register key, |
| 531 | Register result, |
| 532 | Register reg0, |
| 533 | Register reg1, |
| 534 | Register reg2) { |
| 535 | // Register use: |
| 536 | // |
| 537 | // elements - holds the slow-case elements of the receiver on entry. |
| 538 | // Unchanged unless 'result' is the same register. |
| 539 | // |
| 540 | // key - holds the smi key on entry. |
| 541 | // Unchanged unless 'result' is the same register. |
| 542 | // |
| 543 | // |
| 544 | // result - holds the result on exit if the load succeeded. |
| 545 | // Allowed to be the same as 'key' or 'result'. |
| 546 | // Unchanged on bailout so 'key' or 'result' can be used |
| 547 | // in further computation. |
| 548 | // |
| 549 | // Scratch registers: |
| 550 | // |
| 551 | // reg0 - holds the untagged key on entry and holds the hash once computed. |
| 552 | // |
| 553 | // reg1 - Used to hold the capacity mask of the dictionary. |
| 554 | // |
| 555 | // reg2 - Used for the index into the dictionary. |
| 556 | // at - Temporary (avoid MacroAssembler instructions also using 'at'). |
| 557 | Label done; |
| 558 | |
Ben Murdoch | c7cc028 | 2012-03-05 14:35:55 +0000 | [diff] [blame] | 559 | GetNumberHash(reg0, reg1); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 560 | |
| 561 | // Compute the capacity mask. |
Ben Murdoch | c7cc028 | 2012-03-05 14:35:55 +0000 | [diff] [blame] | 562 | lw(reg1, FieldMemOperand(elements, SeededNumberDictionary::kCapacityOffset)); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 563 | sra(reg1, reg1, kSmiTagSize); |
| 564 | Subu(reg1, reg1, Operand(1)); |
| 565 | |
| 566 | // Generate an unrolled loop that performs a few probes before giving up. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 567 | for (int i = 0; i < kNumberDictionaryProbes; i++) { |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 568 | // Use reg2 for index calculations and keep the hash intact in reg0. |
| 569 | mov(reg2, reg0); |
| 570 | // Compute the masked index: (hash + i + i * i) & mask. |
| 571 | if (i > 0) { |
Ben Murdoch | c7cc028 | 2012-03-05 14:35:55 +0000 | [diff] [blame] | 572 | Addu(reg2, reg2, Operand(SeededNumberDictionary::GetProbeOffset(i))); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 573 | } |
| 574 | and_(reg2, reg2, reg1); |
| 575 | |
| 576 | // Scale the index by multiplying by the element size. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 577 | DCHECK(SeededNumberDictionary::kEntrySize == 3); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 578 | sll(at, reg2, 1); // 2x. |
| 579 | addu(reg2, reg2, at); // reg2 = reg2 * 3. |
| 580 | |
| 581 | // Check if the key is identical to the name. |
| 582 | sll(at, reg2, kPointerSizeLog2); |
| 583 | addu(reg2, elements, at); |
| 584 | |
Ben Murdoch | c7cc028 | 2012-03-05 14:35:55 +0000 | [diff] [blame] | 585 | lw(at, FieldMemOperand(reg2, SeededNumberDictionary::kElementsStartOffset)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 586 | if (i != kNumberDictionaryProbes - 1) { |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 587 | Branch(&done, eq, key, Operand(at)); |
| 588 | } else { |
| 589 | Branch(miss, ne, key, Operand(at)); |
| 590 | } |
| 591 | } |
| 592 | |
| 593 | bind(&done); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame^] | 594 | // Check that the value is a field property. |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 595 | // reg2: elements + (index * kPointerSize). |
| 596 | const int kDetailsOffset = |
Ben Murdoch | c7cc028 | 2012-03-05 14:35:55 +0000 | [diff] [blame] | 597 | SeededNumberDictionary::kElementsStartOffset + 2 * kPointerSize; |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 598 | lw(reg1, FieldMemOperand(reg2, kDetailsOffset)); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame^] | 599 | DCHECK_EQ(FIELD, 0); |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 600 | And(at, reg1, Operand(Smi::FromInt(PropertyDetails::TypeField::kMask))); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 601 | Branch(miss, ne, at, Operand(zero_reg)); |
| 602 | |
| 603 | // Get the value at the masked, scaled index and return. |
| 604 | const int kValueOffset = |
Ben Murdoch | c7cc028 | 2012-03-05 14:35:55 +0000 | [diff] [blame] | 605 | SeededNumberDictionary::kElementsStartOffset + kPointerSize; |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 606 | lw(result, FieldMemOperand(reg2, kValueOffset)); |
| 607 | } |
| 608 | |
| 609 | |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 610 | // --------------------------------------------------------------------------- |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 611 | // Instruction macros. |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 612 | |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 613 | void MacroAssembler::Addu(Register rd, Register rs, const Operand& rt) { |
| 614 | if (rt.is_reg()) { |
| 615 | addu(rd, rs, rt.rm()); |
| 616 | } else { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 617 | if (is_int16(rt.imm32_) && !MustUseReg(rt.rmode_)) { |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 618 | addiu(rd, rs, rt.imm32_); |
| 619 | } else { |
| 620 | // li handles the relocation. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 621 | DCHECK(!rs.is(at)); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 622 | li(at, rt); |
| 623 | addu(rd, rs, at); |
| 624 | } |
| 625 | } |
| 626 | } |
| 627 | |
| 628 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 629 | void MacroAssembler::Subu(Register rd, Register rs, const Operand& rt) { |
| 630 | if (rt.is_reg()) { |
| 631 | subu(rd, rs, rt.rm()); |
| 632 | } else { |
| 633 | if (is_int16(rt.imm32_) && !MustUseReg(rt.rmode_)) { |
| 634 | addiu(rd, rs, -rt.imm32_); // No subiu instr, use addiu(x, y, -imm). |
| 635 | } else { |
| 636 | // li handles the relocation. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 637 | DCHECK(!rs.is(at)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 638 | li(at, rt); |
| 639 | subu(rd, rs, at); |
| 640 | } |
| 641 | } |
| 642 | } |
| 643 | |
| 644 | |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 645 | void MacroAssembler::Mul(Register rd, Register rs, const Operand& rt) { |
| 646 | if (rt.is_reg()) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 647 | if (IsMipsArchVariant(kLoongson)) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 648 | mult(rs, rt.rm()); |
| 649 | mflo(rd); |
| 650 | } else { |
| 651 | mul(rd, rs, rt.rm()); |
| 652 | } |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 653 | } else { |
| 654 | // li handles the relocation. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 655 | DCHECK(!rs.is(at)); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 656 | li(at, rt); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 657 | if (IsMipsArchVariant(kLoongson)) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 658 | mult(rs, at); |
| 659 | mflo(rd); |
| 660 | } else { |
| 661 | mul(rd, rs, at); |
| 662 | } |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 663 | } |
| 664 | } |
| 665 | |
| 666 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 667 | void MacroAssembler::Mul(Register rd_hi, Register rd_lo, |
| 668 | Register rs, const Operand& rt) { |
| 669 | if (rt.is_reg()) { |
| 670 | if (!IsMipsArchVariant(kMips32r6)) { |
| 671 | mult(rs, rt.rm()); |
| 672 | mflo(rd_lo); |
| 673 | mfhi(rd_hi); |
| 674 | } else { |
| 675 | if (rd_lo.is(rs)) { |
| 676 | DCHECK(!rd_hi.is(rs)); |
| 677 | DCHECK(!rd_hi.is(rt.rm()) && !rd_lo.is(rt.rm())); |
| 678 | muh(rd_hi, rs, rt.rm()); |
| 679 | mul(rd_lo, rs, rt.rm()); |
| 680 | } else { |
| 681 | DCHECK(!rd_hi.is(rt.rm()) && !rd_lo.is(rt.rm())); |
| 682 | mul(rd_lo, rs, rt.rm()); |
| 683 | muh(rd_hi, rs, rt.rm()); |
| 684 | } |
| 685 | } |
| 686 | } else { |
| 687 | // li handles the relocation. |
| 688 | DCHECK(!rs.is(at)); |
| 689 | li(at, rt); |
| 690 | if (!IsMipsArchVariant(kMips32r6)) { |
| 691 | mult(rs, at); |
| 692 | mflo(rd_lo); |
| 693 | mfhi(rd_hi); |
| 694 | } else { |
| 695 | if (rd_lo.is(rs)) { |
| 696 | DCHECK(!rd_hi.is(rs)); |
| 697 | DCHECK(!rd_hi.is(at) && !rd_lo.is(at)); |
| 698 | muh(rd_hi, rs, at); |
| 699 | mul(rd_lo, rs, at); |
| 700 | } else { |
| 701 | DCHECK(!rd_hi.is(at) && !rd_lo.is(at)); |
| 702 | mul(rd_lo, rs, at); |
| 703 | muh(rd_hi, rs, at); |
| 704 | } |
| 705 | } |
| 706 | } |
| 707 | } |
| 708 | |
| 709 | |
| 710 | void MacroAssembler::Mulh(Register rd, Register rs, const Operand& rt) { |
| 711 | if (rt.is_reg()) { |
| 712 | if (!IsMipsArchVariant(kMips32r6)) { |
| 713 | mult(rs, rt.rm()); |
| 714 | mfhi(rd); |
| 715 | } else { |
| 716 | muh(rd, rs, rt.rm()); |
| 717 | } |
| 718 | } else { |
| 719 | // li handles the relocation. |
| 720 | DCHECK(!rs.is(at)); |
| 721 | li(at, rt); |
| 722 | if (!IsMipsArchVariant(kMips32r6)) { |
| 723 | mult(rs, at); |
| 724 | mfhi(rd); |
| 725 | } else { |
| 726 | muh(rd, rs, at); |
| 727 | } |
| 728 | } |
| 729 | } |
| 730 | |
| 731 | |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 732 | void MacroAssembler::Mult(Register rs, const Operand& rt) { |
| 733 | if (rt.is_reg()) { |
| 734 | mult(rs, rt.rm()); |
| 735 | } else { |
| 736 | // li handles the relocation. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 737 | DCHECK(!rs.is(at)); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 738 | li(at, rt); |
| 739 | mult(rs, at); |
| 740 | } |
| 741 | } |
| 742 | |
| 743 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame^] | 744 | void MacroAssembler::Mulhu(Register rd, Register rs, const Operand& rt) { |
| 745 | if (rt.is_reg()) { |
| 746 | if (!IsMipsArchVariant(kMips32r6)) { |
| 747 | multu(rs, rt.rm()); |
| 748 | mfhi(rd); |
| 749 | } else { |
| 750 | muhu(rd, rs, rt.rm()); |
| 751 | } |
| 752 | } else { |
| 753 | // li handles the relocation. |
| 754 | DCHECK(!rs.is(at)); |
| 755 | li(at, rt); |
| 756 | if (!IsMipsArchVariant(kMips32r6)) { |
| 757 | multu(rs, at); |
| 758 | mfhi(rd); |
| 759 | } else { |
| 760 | muhu(rd, rs, at); |
| 761 | } |
| 762 | } |
| 763 | } |
| 764 | |
| 765 | |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 766 | void MacroAssembler::Multu(Register rs, const Operand& rt) { |
| 767 | if (rt.is_reg()) { |
| 768 | multu(rs, rt.rm()); |
| 769 | } else { |
| 770 | // li handles the relocation. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 771 | DCHECK(!rs.is(at)); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 772 | li(at, rt); |
| 773 | multu(rs, at); |
| 774 | } |
| 775 | } |
| 776 | |
| 777 | |
| 778 | void MacroAssembler::Div(Register rs, const Operand& rt) { |
| 779 | if (rt.is_reg()) { |
| 780 | div(rs, rt.rm()); |
| 781 | } else { |
| 782 | // li handles the relocation. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 783 | DCHECK(!rs.is(at)); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 784 | li(at, rt); |
| 785 | div(rs, at); |
| 786 | } |
| 787 | } |
| 788 | |
| 789 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 790 | void MacroAssembler::Div(Register rem, Register res, |
| 791 | Register rs, const Operand& rt) { |
| 792 | if (rt.is_reg()) { |
| 793 | if (!IsMipsArchVariant(kMips32r6)) { |
| 794 | div(rs, rt.rm()); |
| 795 | mflo(res); |
| 796 | mfhi(rem); |
| 797 | } else { |
| 798 | div(res, rs, rt.rm()); |
| 799 | mod(rem, rs, rt.rm()); |
| 800 | } |
| 801 | } else { |
| 802 | // li handles the relocation. |
| 803 | DCHECK(!rs.is(at)); |
| 804 | li(at, rt); |
| 805 | if (!IsMipsArchVariant(kMips32r6)) { |
| 806 | div(rs, at); |
| 807 | mflo(res); |
| 808 | mfhi(rem); |
| 809 | } else { |
| 810 | div(res, rs, at); |
| 811 | mod(rem, rs, at); |
| 812 | } |
| 813 | } |
| 814 | } |
| 815 | |
| 816 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame^] | 817 | void MacroAssembler::Div(Register res, Register rs, const Operand& rt) { |
| 818 | if (rt.is_reg()) { |
| 819 | if (!IsMipsArchVariant(kMips32r6)) { |
| 820 | div(rs, rt.rm()); |
| 821 | mflo(res); |
| 822 | } else { |
| 823 | div(res, rs, rt.rm()); |
| 824 | } |
| 825 | } else { |
| 826 | // li handles the relocation. |
| 827 | DCHECK(!rs.is(at)); |
| 828 | li(at, rt); |
| 829 | if (!IsMipsArchVariant(kMips32r6)) { |
| 830 | div(rs, at); |
| 831 | mflo(res); |
| 832 | } else { |
| 833 | div(res, rs, at); |
| 834 | } |
| 835 | } |
| 836 | } |
| 837 | |
| 838 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 839 | void MacroAssembler::Mod(Register rd, Register rs, const Operand& rt) { |
| 840 | if (rt.is_reg()) { |
| 841 | if (!IsMipsArchVariant(kMips32r6)) { |
| 842 | div(rs, rt.rm()); |
| 843 | mfhi(rd); |
| 844 | } else { |
| 845 | mod(rd, rs, rt.rm()); |
| 846 | } |
| 847 | } else { |
| 848 | // li handles the relocation. |
| 849 | DCHECK(!rs.is(at)); |
| 850 | li(at, rt); |
| 851 | if (!IsMipsArchVariant(kMips32r6)) { |
| 852 | div(rs, at); |
| 853 | mfhi(rd); |
| 854 | } else { |
| 855 | mod(rd, rs, at); |
| 856 | } |
| 857 | } |
| 858 | } |
| 859 | |
| 860 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame^] | 861 | void MacroAssembler::Modu(Register rd, Register rs, const Operand& rt) { |
| 862 | if (rt.is_reg()) { |
| 863 | if (!IsMipsArchVariant(kMips32r6)) { |
| 864 | divu(rs, rt.rm()); |
| 865 | mfhi(rd); |
| 866 | } else { |
| 867 | modu(rd, rs, rt.rm()); |
| 868 | } |
| 869 | } else { |
| 870 | // li handles the relocation. |
| 871 | DCHECK(!rs.is(at)); |
| 872 | li(at, rt); |
| 873 | if (!IsMipsArchVariant(kMips32r6)) { |
| 874 | divu(rs, at); |
| 875 | mfhi(rd); |
| 876 | } else { |
| 877 | modu(rd, rs, at); |
| 878 | } |
| 879 | } |
| 880 | } |
| 881 | |
| 882 | |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 883 | void MacroAssembler::Divu(Register rs, const Operand& rt) { |
| 884 | if (rt.is_reg()) { |
| 885 | divu(rs, rt.rm()); |
| 886 | } else { |
| 887 | // li handles the relocation. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 888 | DCHECK(!rs.is(at)); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 889 | li(at, rt); |
| 890 | divu(rs, at); |
| 891 | } |
| 892 | } |
| 893 | |
| 894 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame^] | 895 | void MacroAssembler::Divu(Register res, Register rs, const Operand& rt) { |
| 896 | if (rt.is_reg()) { |
| 897 | if (!IsMipsArchVariant(kMips32r6)) { |
| 898 | divu(rs, rt.rm()); |
| 899 | mflo(res); |
| 900 | } else { |
| 901 | divu(res, rs, rt.rm()); |
| 902 | } |
| 903 | } else { |
| 904 | // li handles the relocation. |
| 905 | DCHECK(!rs.is(at)); |
| 906 | li(at, rt); |
| 907 | if (!IsMipsArchVariant(kMips32r6)) { |
| 908 | divu(rs, at); |
| 909 | mflo(res); |
| 910 | } else { |
| 911 | divu(res, rs, at); |
| 912 | } |
| 913 | } |
| 914 | } |
| 915 | |
| 916 | |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 917 | void MacroAssembler::And(Register rd, Register rs, const Operand& rt) { |
| 918 | if (rt.is_reg()) { |
| 919 | and_(rd, rs, rt.rm()); |
| 920 | } else { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 921 | if (is_uint16(rt.imm32_) && !MustUseReg(rt.rmode_)) { |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 922 | andi(rd, rs, rt.imm32_); |
| 923 | } else { |
| 924 | // li handles the relocation. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 925 | DCHECK(!rs.is(at)); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 926 | li(at, rt); |
| 927 | and_(rd, rs, at); |
| 928 | } |
| 929 | } |
| 930 | } |
| 931 | |
| 932 | |
| 933 | void MacroAssembler::Or(Register rd, Register rs, const Operand& rt) { |
| 934 | if (rt.is_reg()) { |
| 935 | or_(rd, rs, rt.rm()); |
| 936 | } else { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 937 | if (is_uint16(rt.imm32_) && !MustUseReg(rt.rmode_)) { |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 938 | ori(rd, rs, rt.imm32_); |
| 939 | } else { |
| 940 | // li handles the relocation. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 941 | DCHECK(!rs.is(at)); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 942 | li(at, rt); |
| 943 | or_(rd, rs, at); |
| 944 | } |
| 945 | } |
| 946 | } |
| 947 | |
| 948 | |
| 949 | void MacroAssembler::Xor(Register rd, Register rs, const Operand& rt) { |
| 950 | if (rt.is_reg()) { |
| 951 | xor_(rd, rs, rt.rm()); |
| 952 | } else { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 953 | if (is_uint16(rt.imm32_) && !MustUseReg(rt.rmode_)) { |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 954 | xori(rd, rs, rt.imm32_); |
| 955 | } else { |
| 956 | // li handles the relocation. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 957 | DCHECK(!rs.is(at)); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 958 | li(at, rt); |
| 959 | xor_(rd, rs, at); |
| 960 | } |
| 961 | } |
| 962 | } |
| 963 | |
| 964 | |
| 965 | void MacroAssembler::Nor(Register rd, Register rs, const Operand& rt) { |
| 966 | if (rt.is_reg()) { |
| 967 | nor(rd, rs, rt.rm()); |
| 968 | } else { |
| 969 | // li handles the relocation. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 970 | DCHECK(!rs.is(at)); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 971 | li(at, rt); |
| 972 | nor(rd, rs, at); |
| 973 | } |
| 974 | } |
| 975 | |
| 976 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 977 | void MacroAssembler::Neg(Register rs, const Operand& rt) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 978 | DCHECK(rt.is_reg()); |
| 979 | DCHECK(!at.is(rs)); |
| 980 | DCHECK(!at.is(rt.rm())); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 981 | li(at, -1); |
| 982 | xor_(rs, rt.rm(), at); |
| 983 | } |
| 984 | |
| 985 | |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 986 | void MacroAssembler::Slt(Register rd, Register rs, const Operand& rt) { |
| 987 | if (rt.is_reg()) { |
| 988 | slt(rd, rs, rt.rm()); |
| 989 | } else { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 990 | if (is_int16(rt.imm32_) && !MustUseReg(rt.rmode_)) { |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 991 | slti(rd, rs, rt.imm32_); |
| 992 | } else { |
| 993 | // li handles the relocation. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 994 | DCHECK(!rs.is(at)); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 995 | li(at, rt); |
| 996 | slt(rd, rs, at); |
| 997 | } |
| 998 | } |
| 999 | } |
| 1000 | |
| 1001 | |
| 1002 | void MacroAssembler::Sltu(Register rd, Register rs, const Operand& rt) { |
| 1003 | if (rt.is_reg()) { |
| 1004 | sltu(rd, rs, rt.rm()); |
| 1005 | } else { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1006 | if (is_uint16(rt.imm32_) && !MustUseReg(rt.rmode_)) { |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1007 | sltiu(rd, rs, rt.imm32_); |
| 1008 | } else { |
| 1009 | // li handles the relocation. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1010 | DCHECK(!rs.is(at)); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1011 | li(at, rt); |
| 1012 | sltu(rd, rs, at); |
| 1013 | } |
| 1014 | } |
| 1015 | } |
| 1016 | |
| 1017 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1018 | void MacroAssembler::Ror(Register rd, Register rs, const Operand& rt) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1019 | if (IsMipsArchVariant(kMips32r2) || IsMipsArchVariant(kMips32r6)) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1020 | if (rt.is_reg()) { |
| 1021 | rotrv(rd, rs, rt.rm()); |
| 1022 | } else { |
| 1023 | rotr(rd, rs, rt.imm32_); |
| 1024 | } |
| 1025 | } else { |
| 1026 | if (rt.is_reg()) { |
| 1027 | subu(at, zero_reg, rt.rm()); |
| 1028 | sllv(at, rs, at); |
| 1029 | srlv(rd, rs, rt.rm()); |
| 1030 | or_(rd, rd, at); |
| 1031 | } else { |
| 1032 | if (rt.imm32_ == 0) { |
| 1033 | srl(rd, rs, 0); |
| 1034 | } else { |
| 1035 | srl(at, rs, rt.imm32_); |
| 1036 | sll(rd, rs, (0x20 - rt.imm32_) & 0x1f); |
| 1037 | or_(rd, rd, at); |
| 1038 | } |
| 1039 | } |
| 1040 | } |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1041 | } |
| 1042 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1043 | |
| 1044 | void MacroAssembler::Pref(int32_t hint, const MemOperand& rs) { |
| 1045 | if (IsMipsArchVariant(kLoongson)) { |
| 1046 | lw(zero_reg, rs); |
| 1047 | } else { |
| 1048 | pref(hint, rs); |
| 1049 | } |
| 1050 | } |
| 1051 | |
| 1052 | |
| 1053 | // ------------Pseudo-instructions------------- |
| 1054 | |
| 1055 | void MacroAssembler::Ulw(Register rd, const MemOperand& rs) { |
| 1056 | lwr(rd, rs); |
| 1057 | lwl(rd, MemOperand(rs.rm(), rs.offset() + 3)); |
| 1058 | } |
| 1059 | |
| 1060 | |
| 1061 | void MacroAssembler::Usw(Register rd, const MemOperand& rs) { |
| 1062 | swr(rd, rs); |
| 1063 | swl(rd, MemOperand(rs.rm(), rs.offset() + 3)); |
| 1064 | } |
| 1065 | |
| 1066 | |
| 1067 | void MacroAssembler::li(Register dst, Handle<Object> value, LiFlags mode) { |
| 1068 | AllowDeferredHandleDereference smi_check; |
| 1069 | if (value->IsSmi()) { |
| 1070 | li(dst, Operand(value), mode); |
| 1071 | } else { |
| 1072 | DCHECK(value->IsHeapObject()); |
| 1073 | if (isolate()->heap()->InNewSpace(*value)) { |
| 1074 | Handle<Cell> cell = isolate()->factory()->NewCell(value); |
| 1075 | li(dst, Operand(cell)); |
| 1076 | lw(dst, FieldMemOperand(dst, Cell::kValueOffset)); |
| 1077 | } else { |
| 1078 | li(dst, Operand(value)); |
| 1079 | } |
| 1080 | } |
| 1081 | } |
| 1082 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1083 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1084 | void MacroAssembler::li(Register rd, Operand j, LiFlags mode) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1085 | DCHECK(!j.is_reg()); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1086 | BlockTrampolinePoolScope block_trampoline_pool(this); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1087 | if (!MustUseReg(j.rmode_) && mode == OPTIMIZE_SIZE) { |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1088 | // Normal load of an immediate value which does not need Relocation Info. |
| 1089 | if (is_int16(j.imm32_)) { |
| 1090 | addiu(rd, zero_reg, j.imm32_); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1091 | } else if (!(j.imm32_ & kHiMask)) { |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1092 | ori(rd, zero_reg, j.imm32_); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1093 | } else if (!(j.imm32_ & kImm16Mask)) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1094 | lui(rd, (j.imm32_ >> kLuiShift) & kImm16Mask); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1095 | } else { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1096 | lui(rd, (j.imm32_ >> kLuiShift) & kImm16Mask); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1097 | ori(rd, rd, (j.imm32_ & kImm16Mask)); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1098 | } |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1099 | } else { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1100 | if (MustUseReg(j.rmode_)) { |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1101 | RecordRelocInfo(j.rmode_, j.imm32_); |
| 1102 | } |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1103 | // 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] | 1104 | // 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] | 1105 | lui(rd, (j.imm32_ >> kLuiShift) & kImm16Mask); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1106 | ori(rd, rd, (j.imm32_ & kImm16Mask)); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1107 | } |
| 1108 | } |
| 1109 | |
| 1110 | |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1111 | void MacroAssembler::MultiPush(RegList regs) { |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 1112 | int16_t num_to_push = NumberOfBitsSet(regs); |
| 1113 | int16_t stack_offset = num_to_push * kPointerSize; |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1114 | |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 1115 | Subu(sp, sp, Operand(stack_offset)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1116 | for (int16_t i = kNumRegisters - 1; i >= 0; i--) { |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1117 | if ((regs & (1 << i)) != 0) { |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 1118 | stack_offset -= kPointerSize; |
| 1119 | sw(ToRegister(i), MemOperand(sp, stack_offset)); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1120 | } |
| 1121 | } |
| 1122 | } |
| 1123 | |
| 1124 | |
| 1125 | void MacroAssembler::MultiPushReversed(RegList regs) { |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 1126 | int16_t num_to_push = NumberOfBitsSet(regs); |
| 1127 | int16_t stack_offset = num_to_push * kPointerSize; |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1128 | |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 1129 | Subu(sp, sp, Operand(stack_offset)); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 1130 | for (int16_t i = 0; i < kNumRegisters; i++) { |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1131 | if ((regs & (1 << i)) != 0) { |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 1132 | stack_offset -= kPointerSize; |
| 1133 | sw(ToRegister(i), MemOperand(sp, stack_offset)); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1134 | } |
| 1135 | } |
| 1136 | } |
| 1137 | |
| 1138 | |
| 1139 | void MacroAssembler::MultiPop(RegList regs) { |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 1140 | int16_t stack_offset = 0; |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1141 | |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 1142 | for (int16_t i = 0; i < kNumRegisters; i++) { |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1143 | if ((regs & (1 << i)) != 0) { |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 1144 | lw(ToRegister(i), MemOperand(sp, stack_offset)); |
| 1145 | stack_offset += kPointerSize; |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1146 | } |
| 1147 | } |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 1148 | addiu(sp, sp, stack_offset); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1149 | } |
| 1150 | |
| 1151 | |
| 1152 | void MacroAssembler::MultiPopReversed(RegList regs) { |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 1153 | int16_t stack_offset = 0; |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1154 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1155 | for (int16_t i = kNumRegisters - 1; i >= 0; i--) { |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1156 | if ((regs & (1 << i)) != 0) { |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 1157 | lw(ToRegister(i), MemOperand(sp, stack_offset)); |
| 1158 | stack_offset += kPointerSize; |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1159 | } |
| 1160 | } |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 1161 | addiu(sp, sp, stack_offset); |
| 1162 | } |
| 1163 | |
| 1164 | |
| 1165 | void MacroAssembler::MultiPushFPU(RegList regs) { |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 1166 | int16_t num_to_push = NumberOfBitsSet(regs); |
| 1167 | int16_t stack_offset = num_to_push * kDoubleSize; |
| 1168 | |
| 1169 | Subu(sp, sp, Operand(stack_offset)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1170 | for (int16_t i = kNumRegisters - 1; i >= 0; i--) { |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 1171 | if ((regs & (1 << i)) != 0) { |
| 1172 | stack_offset -= kDoubleSize; |
| 1173 | sdc1(FPURegister::from_code(i), MemOperand(sp, stack_offset)); |
| 1174 | } |
| 1175 | } |
| 1176 | } |
| 1177 | |
| 1178 | |
| 1179 | void MacroAssembler::MultiPushReversedFPU(RegList regs) { |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 1180 | int16_t num_to_push = NumberOfBitsSet(regs); |
| 1181 | int16_t stack_offset = num_to_push * kDoubleSize; |
| 1182 | |
| 1183 | Subu(sp, sp, Operand(stack_offset)); |
| 1184 | for (int16_t i = 0; i < kNumRegisters; i++) { |
| 1185 | if ((regs & (1 << i)) != 0) { |
| 1186 | stack_offset -= kDoubleSize; |
| 1187 | sdc1(FPURegister::from_code(i), MemOperand(sp, stack_offset)); |
| 1188 | } |
| 1189 | } |
| 1190 | } |
| 1191 | |
| 1192 | |
| 1193 | void MacroAssembler::MultiPopFPU(RegList regs) { |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 1194 | int16_t stack_offset = 0; |
| 1195 | |
| 1196 | for (int16_t i = 0; i < kNumRegisters; i++) { |
| 1197 | if ((regs & (1 << i)) != 0) { |
| 1198 | ldc1(FPURegister::from_code(i), MemOperand(sp, stack_offset)); |
| 1199 | stack_offset += kDoubleSize; |
| 1200 | } |
| 1201 | } |
| 1202 | addiu(sp, sp, stack_offset); |
| 1203 | } |
| 1204 | |
| 1205 | |
| 1206 | void MacroAssembler::MultiPopReversedFPU(RegList regs) { |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 1207 | int16_t stack_offset = 0; |
| 1208 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1209 | for (int16_t i = kNumRegisters - 1; i >= 0; i--) { |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 1210 | if ((regs & (1 << i)) != 0) { |
| 1211 | ldc1(FPURegister::from_code(i), MemOperand(sp, stack_offset)); |
| 1212 | stack_offset += kDoubleSize; |
| 1213 | } |
| 1214 | } |
| 1215 | addiu(sp, sp, stack_offset); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1216 | } |
| 1217 | |
| 1218 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1219 | void MacroAssembler::FlushICache(Register address, unsigned instructions) { |
| 1220 | RegList saved_regs = kJSCallerSaved | ra.bit(); |
| 1221 | MultiPush(saved_regs); |
| 1222 | AllowExternalCallThatCantCauseGC scope(this); |
| 1223 | |
| 1224 | // Save to a0 in case address == t0. |
| 1225 | Move(a0, address); |
| 1226 | PrepareCallCFunction(2, t0); |
| 1227 | |
| 1228 | li(a1, instructions * kInstrSize); |
| 1229 | CallCFunction(ExternalReference::flush_icache_function(isolate()), 2); |
| 1230 | MultiPop(saved_regs); |
| 1231 | } |
| 1232 | |
| 1233 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1234 | void MacroAssembler::Ext(Register rt, |
| 1235 | Register rs, |
| 1236 | uint16_t pos, |
| 1237 | uint16_t size) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1238 | DCHECK(pos < 32); |
| 1239 | DCHECK(pos + size < 33); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1240 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1241 | if (IsMipsArchVariant(kMips32r2) || IsMipsArchVariant(kMips32r6)) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1242 | ext_(rt, rs, pos, size); |
| 1243 | } else { |
| 1244 | // Move rs to rt and shift it left then right to get the |
| 1245 | // desired bitfield on the right side and zeroes on the left. |
Ben Murdoch | 69a99ed | 2011-11-30 16:03:39 +0000 | [diff] [blame] | 1246 | int shift_left = 32 - (pos + size); |
| 1247 | sll(rt, rs, shift_left); // Acts as a move if shift_left == 0. |
| 1248 | |
| 1249 | int shift_right = 32 - size; |
| 1250 | if (shift_right > 0) { |
| 1251 | srl(rt, rt, shift_right); |
| 1252 | } |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1253 | } |
| 1254 | } |
| 1255 | |
| 1256 | |
| 1257 | void MacroAssembler::Ins(Register rt, |
| 1258 | Register rs, |
| 1259 | uint16_t pos, |
| 1260 | uint16_t size) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1261 | DCHECK(pos < 32); |
| 1262 | DCHECK(pos + size <= 32); |
| 1263 | DCHECK(size != 0); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1264 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1265 | if (IsMipsArchVariant(kMips32r2) || IsMipsArchVariant(kMips32r6)) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1266 | ins_(rt, rs, pos, size); |
| 1267 | } else { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1268 | DCHECK(!rt.is(t8) && !rs.is(t8)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1269 | Subu(at, zero_reg, Operand(1)); |
| 1270 | srl(at, at, 32 - size); |
| 1271 | and_(t8, rs, at); |
| 1272 | sll(t8, t8, pos); |
| 1273 | sll(at, at, pos); |
| 1274 | nor(at, at, zero_reg); |
| 1275 | and_(at, rt, at); |
| 1276 | or_(rt, t8, at); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1277 | } |
| 1278 | } |
| 1279 | |
| 1280 | |
Ben Murdoch | 69a99ed | 2011-11-30 16:03:39 +0000 | [diff] [blame] | 1281 | void MacroAssembler::Cvt_d_uw(FPURegister fd, |
| 1282 | FPURegister fs, |
| 1283 | FPURegister scratch) { |
| 1284 | // Move the data from fs to t8. |
| 1285 | mfc1(t8, fs); |
| 1286 | Cvt_d_uw(fd, t8, scratch); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1287 | } |
| 1288 | |
| 1289 | |
Ben Murdoch | 69a99ed | 2011-11-30 16:03:39 +0000 | [diff] [blame] | 1290 | void MacroAssembler::Cvt_d_uw(FPURegister fd, |
| 1291 | Register rs, |
| 1292 | FPURegister scratch) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1293 | // Convert rs to a FP value in fd (and fd + 1). |
| 1294 | // We do this by converting rs minus the MSB to avoid sign conversion, |
Ben Murdoch | 69a99ed | 2011-11-30 16:03:39 +0000 | [diff] [blame] | 1295 | // then adding 2^31 to the result (if needed). |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1296 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1297 | DCHECK(!fd.is(scratch)); |
| 1298 | DCHECK(!rs.is(t9)); |
| 1299 | DCHECK(!rs.is(at)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1300 | |
Ben Murdoch | 69a99ed | 2011-11-30 16:03:39 +0000 | [diff] [blame] | 1301 | // Save rs's MSB to t9. |
| 1302 | Ext(t9, rs, 31, 1); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1303 | // Remove rs's MSB. |
Ben Murdoch | 69a99ed | 2011-11-30 16:03:39 +0000 | [diff] [blame] | 1304 | Ext(at, rs, 0, 31); |
| 1305 | // Move the result to fd. |
| 1306 | mtc1(at, fd); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1307 | |
| 1308 | // Convert fd to a real FP value. |
| 1309 | cvt_d_w(fd, fd); |
| 1310 | |
| 1311 | Label conversion_done; |
| 1312 | |
| 1313 | // If rs's MSB was 0, it's done. |
| 1314 | // Otherwise we need to add that to the FP register. |
Ben Murdoch | 69a99ed | 2011-11-30 16:03:39 +0000 | [diff] [blame] | 1315 | Branch(&conversion_done, eq, t9, Operand(zero_reg)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1316 | |
Ben Murdoch | 69a99ed | 2011-11-30 16:03:39 +0000 | [diff] [blame] | 1317 | // Load 2^31 into f20 as its float representation. |
| 1318 | li(at, 0x41E00000); |
Ben Murdoch | 69a99ed | 2011-11-30 16:03:39 +0000 | [diff] [blame] | 1319 | mtc1(zero_reg, scratch); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1320 | Mthc1(at, scratch); |
Ben Murdoch | 69a99ed | 2011-11-30 16:03:39 +0000 | [diff] [blame] | 1321 | // Add it to fd. |
| 1322 | add_d(fd, fd, scratch); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1323 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1324 | bind(&conversion_done); |
| 1325 | } |
| 1326 | |
| 1327 | |
Ben Murdoch | 69a99ed | 2011-11-30 16:03:39 +0000 | [diff] [blame] | 1328 | void MacroAssembler::Trunc_uw_d(FPURegister fd, |
| 1329 | FPURegister fs, |
| 1330 | FPURegister scratch) { |
| 1331 | Trunc_uw_d(fs, t8, scratch); |
| 1332 | mtc1(t8, fd); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1333 | } |
| 1334 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1335 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1336 | void MacroAssembler::Trunc_w_d(FPURegister fd, FPURegister fs) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1337 | if (IsMipsArchVariant(kLoongson) && fd.is(fs)) { |
| 1338 | Mfhc1(t8, fs); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1339 | trunc_w_d(fd, fs); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1340 | Mthc1(t8, fs); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1341 | } else { |
| 1342 | trunc_w_d(fd, fs); |
| 1343 | } |
| 1344 | } |
| 1345 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1346 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1347 | void MacroAssembler::Round_w_d(FPURegister fd, FPURegister fs) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1348 | if (IsMipsArchVariant(kLoongson) && fd.is(fs)) { |
| 1349 | Mfhc1(t8, fs); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1350 | round_w_d(fd, fs); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1351 | Mthc1(t8, fs); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1352 | } else { |
| 1353 | round_w_d(fd, fs); |
| 1354 | } |
| 1355 | } |
| 1356 | |
| 1357 | |
| 1358 | void MacroAssembler::Floor_w_d(FPURegister fd, FPURegister fs) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1359 | if (IsMipsArchVariant(kLoongson) && fd.is(fs)) { |
| 1360 | Mfhc1(t8, fs); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1361 | floor_w_d(fd, fs); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1362 | Mthc1(t8, fs); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1363 | } else { |
| 1364 | floor_w_d(fd, fs); |
| 1365 | } |
| 1366 | } |
| 1367 | |
| 1368 | |
| 1369 | void MacroAssembler::Ceil_w_d(FPURegister fd, FPURegister fs) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1370 | if (IsMipsArchVariant(kLoongson) && fd.is(fs)) { |
| 1371 | Mfhc1(t8, fs); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1372 | ceil_w_d(fd, fs); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1373 | Mthc1(t8, fs); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1374 | } else { |
| 1375 | ceil_w_d(fd, fs); |
| 1376 | } |
| 1377 | } |
| 1378 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1379 | |
Ben Murdoch | 69a99ed | 2011-11-30 16:03:39 +0000 | [diff] [blame] | 1380 | void MacroAssembler::Trunc_uw_d(FPURegister fd, |
| 1381 | Register rs, |
| 1382 | FPURegister scratch) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1383 | DCHECK(!fd.is(scratch)); |
| 1384 | DCHECK(!rs.is(at)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1385 | |
Ben Murdoch | 69a99ed | 2011-11-30 16:03:39 +0000 | [diff] [blame] | 1386 | // Load 2^31 into scratch as its float representation. |
| 1387 | li(at, 0x41E00000); |
Ben Murdoch | 69a99ed | 2011-11-30 16:03:39 +0000 | [diff] [blame] | 1388 | mtc1(zero_reg, scratch); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1389 | Mthc1(at, scratch); |
Ben Murdoch | 69a99ed | 2011-11-30 16:03:39 +0000 | [diff] [blame] | 1390 | // Test if scratch > fd. |
Ben Murdoch | 85b7179 | 2012-04-11 18:30:58 +0100 | [diff] [blame] | 1391 | // If fd < 2^31 we can convert it normally. |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1392 | Label simple_convert; |
| 1393 | BranchF(&simple_convert, NULL, lt, fd, scratch); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1394 | |
| 1395 | // First we subtract 2^31 from fd, then trunc it to rs |
| 1396 | // and add 2^31 to rs. |
Ben Murdoch | 69a99ed | 2011-11-30 16:03:39 +0000 | [diff] [blame] | 1397 | sub_d(scratch, fd, scratch); |
| 1398 | trunc_w_d(scratch, scratch); |
| 1399 | mfc1(rs, scratch); |
| 1400 | Or(rs, rs, 1 << 31); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1401 | |
| 1402 | Label done; |
| 1403 | Branch(&done); |
| 1404 | // Simple conversion. |
| 1405 | bind(&simple_convert); |
Ben Murdoch | 69a99ed | 2011-11-30 16:03:39 +0000 | [diff] [blame] | 1406 | trunc_w_d(scratch, fd); |
| 1407 | mfc1(rs, scratch); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1408 | |
| 1409 | bind(&done); |
| 1410 | } |
| 1411 | |
| 1412 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1413 | void MacroAssembler::Mthc1(Register rt, FPURegister fs) { |
| 1414 | if (IsFp64Mode()) { |
| 1415 | mthc1(rt, fs); |
| 1416 | } else { |
| 1417 | mtc1(rt, fs.high()); |
| 1418 | } |
| 1419 | } |
| 1420 | |
| 1421 | |
| 1422 | void MacroAssembler::Mfhc1(Register rt, FPURegister fs) { |
| 1423 | if (IsFp64Mode()) { |
| 1424 | mfhc1(rt, fs); |
| 1425 | } else { |
| 1426 | mfc1(rt, fs.high()); |
| 1427 | } |
| 1428 | } |
| 1429 | |
| 1430 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1431 | void MacroAssembler::BranchF(Label* target, |
| 1432 | Label* nan, |
| 1433 | Condition cc, |
| 1434 | FPURegister cmp1, |
| 1435 | FPURegister cmp2, |
| 1436 | BranchDelaySlot bd) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1437 | BlockTrampolinePoolScope block_trampoline_pool(this); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1438 | if (cc == al) { |
| 1439 | Branch(bd, target); |
| 1440 | return; |
| 1441 | } |
| 1442 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1443 | DCHECK(nan || target); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1444 | // Check for unordered (NaN) cases. |
| 1445 | if (nan) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1446 | if (!IsMipsArchVariant(kMips32r6)) { |
| 1447 | c(UN, D, cmp1, cmp2); |
| 1448 | bc1t(nan); |
| 1449 | } else { |
| 1450 | // Use kDoubleCompareReg for comparison result. It has to be unavailable |
| 1451 | // to lithium register allocator. |
| 1452 | DCHECK(!cmp1.is(kDoubleCompareReg) && !cmp2.is(kDoubleCompareReg)); |
| 1453 | cmp(UN, L, kDoubleCompareReg, cmp1, cmp2); |
| 1454 | bc1nez(nan, kDoubleCompareReg); |
| 1455 | } |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1456 | } |
| 1457 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1458 | if (!IsMipsArchVariant(kMips32r6)) { |
| 1459 | if (target) { |
| 1460 | // Here NaN cases were either handled by this function or are assumed to |
| 1461 | // have been handled by the caller. |
| 1462 | switch (cc) { |
| 1463 | case lt: |
| 1464 | c(OLT, D, cmp1, cmp2); |
| 1465 | bc1t(target); |
| 1466 | break; |
| 1467 | case gt: |
| 1468 | c(ULE, D, cmp1, cmp2); |
| 1469 | bc1f(target); |
| 1470 | break; |
| 1471 | case ge: |
| 1472 | c(ULT, D, cmp1, cmp2); |
| 1473 | bc1f(target); |
| 1474 | break; |
| 1475 | case le: |
| 1476 | c(OLE, D, cmp1, cmp2); |
| 1477 | bc1t(target); |
| 1478 | break; |
| 1479 | case eq: |
| 1480 | c(EQ, D, cmp1, cmp2); |
| 1481 | bc1t(target); |
| 1482 | break; |
| 1483 | case ueq: |
| 1484 | c(UEQ, D, cmp1, cmp2); |
| 1485 | bc1t(target); |
| 1486 | break; |
| 1487 | case ne: |
| 1488 | c(EQ, D, cmp1, cmp2); |
| 1489 | bc1f(target); |
| 1490 | break; |
| 1491 | case nue: |
| 1492 | c(UEQ, D, cmp1, cmp2); |
| 1493 | bc1f(target); |
| 1494 | break; |
| 1495 | default: |
| 1496 | CHECK(0); |
| 1497 | } |
| 1498 | } |
| 1499 | } else { |
| 1500 | if (target) { |
| 1501 | // Here NaN cases were either handled by this function or are assumed to |
| 1502 | // have been handled by the caller. |
| 1503 | // Unsigned conditions are treated as their signed counterpart. |
| 1504 | // Use kDoubleCompareReg for comparison result, it is |
| 1505 | // valid in fp64 (FR = 1) mode which is implied for mips32r6. |
| 1506 | DCHECK(!cmp1.is(kDoubleCompareReg) && !cmp2.is(kDoubleCompareReg)); |
| 1507 | switch (cc) { |
| 1508 | case lt: |
| 1509 | cmp(OLT, L, kDoubleCompareReg, cmp1, cmp2); |
| 1510 | bc1nez(target, kDoubleCompareReg); |
| 1511 | break; |
| 1512 | case gt: |
| 1513 | cmp(ULE, L, kDoubleCompareReg, cmp1, cmp2); |
| 1514 | bc1eqz(target, kDoubleCompareReg); |
| 1515 | break; |
| 1516 | case ge: |
| 1517 | cmp(ULT, L, kDoubleCompareReg, cmp1, cmp2); |
| 1518 | bc1eqz(target, kDoubleCompareReg); |
| 1519 | break; |
| 1520 | case le: |
| 1521 | cmp(OLE, L, kDoubleCompareReg, cmp1, cmp2); |
| 1522 | bc1nez(target, kDoubleCompareReg); |
| 1523 | break; |
| 1524 | case eq: |
| 1525 | cmp(EQ, L, kDoubleCompareReg, cmp1, cmp2); |
| 1526 | bc1nez(target, kDoubleCompareReg); |
| 1527 | break; |
| 1528 | case ueq: |
| 1529 | cmp(UEQ, L, kDoubleCompareReg, cmp1, cmp2); |
| 1530 | bc1nez(target, kDoubleCompareReg); |
| 1531 | break; |
| 1532 | case ne: |
| 1533 | cmp(EQ, L, kDoubleCompareReg, cmp1, cmp2); |
| 1534 | bc1eqz(target, kDoubleCompareReg); |
| 1535 | break; |
| 1536 | case nue: |
| 1537 | cmp(UEQ, L, kDoubleCompareReg, cmp1, cmp2); |
| 1538 | bc1eqz(target, kDoubleCompareReg); |
| 1539 | break; |
| 1540 | default: |
| 1541 | CHECK(0); |
| 1542 | } |
| 1543 | } |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1544 | } |
| 1545 | |
| 1546 | if (bd == PROTECT) { |
| 1547 | nop(); |
| 1548 | } |
| 1549 | } |
| 1550 | |
| 1551 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame^] | 1552 | void MacroAssembler::Move(FPURegister dst, float imm) { |
| 1553 | li(at, Operand(bit_cast<int32_t>(imm))); |
| 1554 | mtc1(at, dst); |
| 1555 | } |
| 1556 | |
| 1557 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1558 | void MacroAssembler::Move(FPURegister dst, double imm) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1559 | static const DoubleRepresentation minus_zero(-0.0); |
| 1560 | static const DoubleRepresentation zero(0.0); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1561 | DoubleRepresentation value_rep(imm); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1562 | // Handle special values first. |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame^] | 1563 | if (value_rep == zero && has_double_zero_reg_set_) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1564 | mov_d(dst, kDoubleRegZero); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame^] | 1565 | } else if (value_rep == minus_zero && has_double_zero_reg_set_) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1566 | neg_d(dst, kDoubleRegZero); |
| 1567 | } else { |
| 1568 | uint32_t lo, hi; |
| 1569 | DoubleAsTwoUInt32(imm, &lo, &hi); |
| 1570 | // Move the low part of the double into the lower of the corresponding FPU |
| 1571 | // register of FPU register pair. |
| 1572 | if (lo != 0) { |
| 1573 | li(at, Operand(lo)); |
| 1574 | mtc1(at, dst); |
| 1575 | } else { |
| 1576 | mtc1(zero_reg, dst); |
| 1577 | } |
| 1578 | // Move the high part of the double into the higher of the corresponding FPU |
| 1579 | // register of FPU register pair. |
| 1580 | if (hi != 0) { |
| 1581 | li(at, Operand(hi)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1582 | Mthc1(at, dst); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1583 | } else { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1584 | Mthc1(zero_reg, dst); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1585 | } |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame^] | 1586 | if (dst.is(kDoubleRegZero)) has_double_zero_reg_set_ = true; |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1587 | } |
| 1588 | } |
| 1589 | |
| 1590 | |
| 1591 | void MacroAssembler::Movz(Register rd, Register rs, Register rt) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1592 | if (IsMipsArchVariant(kLoongson) || IsMipsArchVariant(kMips32r6)) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1593 | Label done; |
| 1594 | Branch(&done, ne, rt, Operand(zero_reg)); |
| 1595 | mov(rd, rs); |
| 1596 | bind(&done); |
| 1597 | } else { |
| 1598 | movz(rd, rs, rt); |
| 1599 | } |
| 1600 | } |
| 1601 | |
| 1602 | |
| 1603 | void MacroAssembler::Movn(Register rd, Register rs, Register rt) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1604 | if (IsMipsArchVariant(kLoongson) || IsMipsArchVariant(kMips32r6)) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1605 | Label done; |
| 1606 | Branch(&done, eq, rt, Operand(zero_reg)); |
| 1607 | mov(rd, rs); |
| 1608 | bind(&done); |
| 1609 | } else { |
| 1610 | movn(rd, rs, rt); |
| 1611 | } |
| 1612 | } |
| 1613 | |
| 1614 | |
| 1615 | void MacroAssembler::Movt(Register rd, Register rs, uint16_t cc) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1616 | if (IsMipsArchVariant(kLoongson)) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1617 | // Tests an FP condition code and then conditionally move rs to rd. |
| 1618 | // 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] | 1619 | DCHECK(cc == 0); |
| 1620 | DCHECK(!(rs.is(t8) || rd.is(t8))); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1621 | Label done; |
| 1622 | Register scratch = t8; |
| 1623 | // For testing purposes we need to fetch content of the FCSR register and |
| 1624 | // than test its cc (floating point condition code) bit (for cc = 0, it is |
| 1625 | // 24. bit of the FCSR). |
| 1626 | cfc1(scratch, FCSR); |
| 1627 | // For the MIPS I, II and III architectures, the contents of scratch is |
| 1628 | // UNPREDICTABLE for the instruction immediately following CFC1. |
| 1629 | nop(); |
| 1630 | srl(scratch, scratch, 16); |
| 1631 | andi(scratch, scratch, 0x0080); |
| 1632 | Branch(&done, eq, scratch, Operand(zero_reg)); |
| 1633 | mov(rd, rs); |
| 1634 | bind(&done); |
| 1635 | } else { |
| 1636 | movt(rd, rs, cc); |
| 1637 | } |
| 1638 | } |
| 1639 | |
| 1640 | |
| 1641 | void MacroAssembler::Movf(Register rd, Register rs, uint16_t cc) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1642 | if (IsMipsArchVariant(kLoongson)) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1643 | // Tests an FP condition code and then conditionally move rs to rd. |
| 1644 | // 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] | 1645 | DCHECK(cc == 0); |
| 1646 | DCHECK(!(rs.is(t8) || rd.is(t8))); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1647 | Label done; |
| 1648 | Register scratch = t8; |
| 1649 | // For testing purposes we need to fetch content of the FCSR register and |
| 1650 | // than test its cc (floating point condition code) bit (for cc = 0, it is |
| 1651 | // 24. bit of the FCSR). |
| 1652 | cfc1(scratch, FCSR); |
| 1653 | // For the MIPS I, II and III architectures, the contents of scratch is |
| 1654 | // UNPREDICTABLE for the instruction immediately following CFC1. |
| 1655 | nop(); |
| 1656 | srl(scratch, scratch, 16); |
| 1657 | andi(scratch, scratch, 0x0080); |
| 1658 | Branch(&done, ne, scratch, Operand(zero_reg)); |
| 1659 | mov(rd, rs); |
| 1660 | bind(&done); |
| 1661 | } else { |
| 1662 | movf(rd, rs, cc); |
| 1663 | } |
| 1664 | } |
| 1665 | |
| 1666 | |
| 1667 | void MacroAssembler::Clz(Register rd, Register rs) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1668 | if (IsMipsArchVariant(kLoongson)) { |
| 1669 | 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] | 1670 | Register mask = t8; |
| 1671 | Register scratch = t9; |
| 1672 | Label loop, end; |
| 1673 | mov(at, rs); |
| 1674 | mov(rd, zero_reg); |
| 1675 | lui(mask, 0x8000); |
| 1676 | bind(&loop); |
| 1677 | and_(scratch, at, mask); |
| 1678 | Branch(&end, ne, scratch, Operand(zero_reg)); |
| 1679 | addiu(rd, rd, 1); |
| 1680 | Branch(&loop, ne, mask, Operand(zero_reg), USE_DELAY_SLOT); |
| 1681 | srl(mask, mask, 1); |
| 1682 | bind(&end); |
| 1683 | } else { |
| 1684 | clz(rd, rs); |
| 1685 | } |
| 1686 | } |
| 1687 | |
| 1688 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1689 | void MacroAssembler::EmitFPUTruncate(FPURoundingMode rounding_mode, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1690 | Register result, |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1691 | DoubleRegister double_input, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1692 | Register scratch, |
| 1693 | DoubleRegister double_scratch, |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1694 | Register except_flag, |
| 1695 | CheckForInexactConversion check_inexact) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1696 | DCHECK(!result.is(scratch)); |
| 1697 | DCHECK(!double_input.is(double_scratch)); |
| 1698 | DCHECK(!except_flag.is(scratch)); |
| 1699 | |
| 1700 | Label done; |
| 1701 | |
| 1702 | // Clear the except flag (0 = no exception) |
| 1703 | mov(except_flag, zero_reg); |
| 1704 | |
| 1705 | // Test for values that can be exactly represented as a signed 32-bit integer. |
| 1706 | cvt_w_d(double_scratch, double_input); |
| 1707 | mfc1(result, double_scratch); |
| 1708 | cvt_d_w(double_scratch, double_scratch); |
| 1709 | BranchF(&done, NULL, eq, double_input, double_scratch); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1710 | |
| 1711 | int32_t except_mask = kFCSRFlagMask; // Assume interested in all exceptions. |
| 1712 | |
| 1713 | if (check_inexact == kDontCheckForInexactConversion) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1714 | // Ignore inexact exceptions. |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1715 | except_mask &= ~kFCSRInexactFlagMask; |
| 1716 | } |
| 1717 | |
| 1718 | // Save FCSR. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1719 | cfc1(scratch, FCSR); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1720 | // Disable FPU exceptions. |
| 1721 | ctc1(zero_reg, FCSR); |
| 1722 | |
| 1723 | // Do operation based on rounding mode. |
| 1724 | switch (rounding_mode) { |
| 1725 | case kRoundToNearest: |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1726 | Round_w_d(double_scratch, double_input); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1727 | break; |
| 1728 | case kRoundToZero: |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1729 | Trunc_w_d(double_scratch, double_input); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1730 | break; |
| 1731 | case kRoundToPlusInf: |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1732 | Ceil_w_d(double_scratch, double_input); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1733 | break; |
| 1734 | case kRoundToMinusInf: |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1735 | Floor_w_d(double_scratch, double_input); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1736 | break; |
| 1737 | } // End of switch-statement. |
| 1738 | |
| 1739 | // Retrieve FCSR. |
| 1740 | cfc1(except_flag, FCSR); |
| 1741 | // Restore FCSR. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1742 | ctc1(scratch, FCSR); |
| 1743 | // Move the converted value into the result register. |
| 1744 | mfc1(result, double_scratch); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1745 | |
| 1746 | // Check for fpu exceptions. |
| 1747 | And(except_flag, except_flag, Operand(except_mask)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1748 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1749 | bind(&done); |
| 1750 | } |
| 1751 | |
| 1752 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1753 | void MacroAssembler::TryInlineTruncateDoubleToI(Register result, |
| 1754 | DoubleRegister double_input, |
| 1755 | Label* done) { |
| 1756 | DoubleRegister single_scratch = kLithiumScratchDouble.low(); |
| 1757 | Register scratch = at; |
| 1758 | Register scratch2 = t9; |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 1759 | |
| 1760 | // Clear cumulative exception flags and save the FCSR. |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 1761 | cfc1(scratch2, FCSR); |
| 1762 | ctc1(zero_reg, FCSR); |
| 1763 | // Try a conversion to a signed integer. |
| 1764 | trunc_w_d(single_scratch, double_input); |
| 1765 | mfc1(result, single_scratch); |
| 1766 | // Retrieve and restore the FCSR. |
| 1767 | cfc1(scratch, FCSR); |
| 1768 | ctc1(scratch2, FCSR); |
| 1769 | // Check for overflow and NaNs. |
| 1770 | And(scratch, |
| 1771 | scratch, |
| 1772 | kFCSROverflowFlagMask | kFCSRUnderflowFlagMask | kFCSRInvalidOpFlagMask); |
| 1773 | // If we had no exceptions we are done. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1774 | Branch(done, eq, scratch, Operand(zero_reg)); |
| 1775 | } |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 1776 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1777 | |
| 1778 | void MacroAssembler::TruncateDoubleToI(Register result, |
| 1779 | DoubleRegister double_input) { |
| 1780 | Label done; |
| 1781 | |
| 1782 | TryInlineTruncateDoubleToI(result, double_input, &done); |
| 1783 | |
| 1784 | // If we fell through then inline version didn't succeed - call stub instead. |
| 1785 | push(ra); |
| 1786 | Subu(sp, sp, Operand(kDoubleSize)); // Put input on stack. |
| 1787 | sdc1(double_input, MemOperand(sp, 0)); |
| 1788 | |
| 1789 | DoubleToIStub stub(isolate(), sp, result, 0, true, true); |
| 1790 | CallStub(&stub); |
| 1791 | |
| 1792 | Addu(sp, sp, Operand(kDoubleSize)); |
| 1793 | pop(ra); |
| 1794 | |
| 1795 | bind(&done); |
| 1796 | } |
| 1797 | |
| 1798 | |
| 1799 | void MacroAssembler::TruncateHeapNumberToI(Register result, Register object) { |
| 1800 | Label done; |
| 1801 | DoubleRegister double_scratch = f12; |
| 1802 | DCHECK(!result.is(object)); |
| 1803 | |
| 1804 | ldc1(double_scratch, |
| 1805 | MemOperand(object, HeapNumber::kValueOffset - kHeapObjectTag)); |
| 1806 | TryInlineTruncateDoubleToI(result, double_scratch, &done); |
| 1807 | |
| 1808 | // If we fell through then inline version didn't succeed - call stub instead. |
| 1809 | push(ra); |
| 1810 | DoubleToIStub stub(isolate(), |
| 1811 | object, |
| 1812 | result, |
| 1813 | HeapNumber::kValueOffset - kHeapObjectTag, |
| 1814 | true, |
| 1815 | true); |
| 1816 | CallStub(&stub); |
| 1817 | pop(ra); |
| 1818 | |
| 1819 | bind(&done); |
| 1820 | } |
| 1821 | |
| 1822 | |
| 1823 | void MacroAssembler::TruncateNumberToI(Register object, |
| 1824 | Register result, |
| 1825 | Register heap_number_map, |
| 1826 | Register scratch, |
| 1827 | Label* not_number) { |
| 1828 | Label done; |
| 1829 | DCHECK(!result.is(object)); |
| 1830 | |
| 1831 | UntagAndJumpIfSmi(result, object, &done); |
| 1832 | JumpIfNotHeapNumber(object, heap_number_map, scratch, not_number); |
| 1833 | TruncateHeapNumberToI(result, object); |
| 1834 | |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 1835 | bind(&done); |
| 1836 | } |
| 1837 | |
| 1838 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1839 | void MacroAssembler::GetLeastBitsFromSmi(Register dst, |
| 1840 | Register src, |
| 1841 | int num_least_bits) { |
| 1842 | Ext(dst, src, kSmiTagSize, num_least_bits); |
| 1843 | } |
| 1844 | |
| 1845 | |
| 1846 | void MacroAssembler::GetLeastBitsFromInt32(Register dst, |
| 1847 | Register src, |
| 1848 | int num_least_bits) { |
| 1849 | And(dst, src, Operand((1 << num_least_bits) - 1)); |
| 1850 | } |
| 1851 | |
| 1852 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1853 | // Emulated condtional branches do not emit a nop in the branch delay slot. |
| 1854 | // |
| 1855 | // BRANCH_ARGS_CHECK checks that conditional jump arguments are correct. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1856 | #define BRANCH_ARGS_CHECK(cond, rs, rt) DCHECK( \ |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1857 | (cond == cc_always && rs.is(zero_reg) && rt.rm().is(zero_reg)) || \ |
| 1858 | (cond != cc_always && (!rs.is(zero_reg) || !rt.rm().is(zero_reg)))) |
| 1859 | |
| 1860 | |
| 1861 | void MacroAssembler::Branch(int16_t offset, BranchDelaySlot bdslot) { |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 1862 | BranchShort(offset, bdslot); |
| 1863 | } |
| 1864 | |
| 1865 | |
| 1866 | void MacroAssembler::Branch(int16_t offset, Condition cond, Register rs, |
| 1867 | const Operand& rt, |
| 1868 | BranchDelaySlot bdslot) { |
| 1869 | BranchShort(offset, cond, rs, rt, bdslot); |
| 1870 | } |
| 1871 | |
| 1872 | |
| 1873 | void MacroAssembler::Branch(Label* L, BranchDelaySlot bdslot) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1874 | if (L->is_bound()) { |
| 1875 | if (is_near(L)) { |
| 1876 | BranchShort(L, bdslot); |
| 1877 | } else { |
| 1878 | Jr(L, bdslot); |
| 1879 | } |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 1880 | } else { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1881 | if (is_trampoline_emitted()) { |
| 1882 | Jr(L, bdslot); |
| 1883 | } else { |
| 1884 | BranchShort(L, bdslot); |
| 1885 | } |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 1886 | } |
| 1887 | } |
| 1888 | |
| 1889 | |
| 1890 | void MacroAssembler::Branch(Label* L, Condition cond, Register rs, |
| 1891 | const Operand& rt, |
| 1892 | BranchDelaySlot bdslot) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1893 | if (L->is_bound()) { |
| 1894 | if (is_near(L)) { |
| 1895 | BranchShort(L, cond, rs, rt, bdslot); |
| 1896 | } else { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1897 | if (cond != cc_always) { |
| 1898 | Label skip; |
| 1899 | Condition neg_cond = NegateCondition(cond); |
| 1900 | BranchShort(&skip, neg_cond, rs, rt); |
| 1901 | Jr(L, bdslot); |
| 1902 | bind(&skip); |
| 1903 | } else { |
| 1904 | Jr(L, bdslot); |
| 1905 | } |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1906 | } |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 1907 | } else { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1908 | if (is_trampoline_emitted()) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1909 | if (cond != cc_always) { |
| 1910 | Label skip; |
| 1911 | Condition neg_cond = NegateCondition(cond); |
| 1912 | BranchShort(&skip, neg_cond, rs, rt); |
| 1913 | Jr(L, bdslot); |
| 1914 | bind(&skip); |
| 1915 | } else { |
| 1916 | Jr(L, bdslot); |
| 1917 | } |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1918 | } else { |
| 1919 | BranchShort(L, cond, rs, rt, bdslot); |
| 1920 | } |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 1921 | } |
| 1922 | } |
| 1923 | |
| 1924 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1925 | void MacroAssembler::Branch(Label* L, |
| 1926 | Condition cond, |
| 1927 | Register rs, |
| 1928 | Heap::RootListIndex index, |
| 1929 | BranchDelaySlot bdslot) { |
| 1930 | LoadRoot(at, index); |
| 1931 | Branch(L, cond, rs, Operand(at), bdslot); |
| 1932 | } |
| 1933 | |
| 1934 | |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 1935 | void MacroAssembler::BranchShort(int16_t offset, BranchDelaySlot bdslot) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1936 | b(offset); |
| 1937 | |
| 1938 | // Emit a nop in the branch delay slot if required. |
| 1939 | if (bdslot == PROTECT) |
| 1940 | nop(); |
| 1941 | } |
| 1942 | |
| 1943 | |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 1944 | void MacroAssembler::BranchShort(int16_t offset, Condition cond, Register rs, |
| 1945 | const Operand& rt, |
| 1946 | BranchDelaySlot bdslot) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1947 | BRANCH_ARGS_CHECK(cond, rs, rt); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1948 | DCHECK(!rs.is(zero_reg)); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 1949 | Register r2 = no_reg; |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1950 | Register scratch = at; |
| 1951 | |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1952 | if (rt.is_reg()) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1953 | // NOTE: 'at' can be clobbered by Branch but it is legal to use it as rs or |
| 1954 | // rt. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1955 | BlockTrampolinePoolScope block_trampoline_pool(this); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1956 | r2 = rt.rm_; |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1957 | switch (cond) { |
| 1958 | case cc_always: |
| 1959 | b(offset); |
| 1960 | break; |
| 1961 | case eq: |
| 1962 | beq(rs, r2, offset); |
| 1963 | break; |
| 1964 | case ne: |
| 1965 | bne(rs, r2, offset); |
| 1966 | break; |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1967 | // Signed comparison. |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1968 | case greater: |
| 1969 | if (r2.is(zero_reg)) { |
| 1970 | bgtz(rs, offset); |
| 1971 | } else { |
| 1972 | slt(scratch, r2, rs); |
| 1973 | bne(scratch, zero_reg, offset); |
| 1974 | } |
| 1975 | break; |
| 1976 | case greater_equal: |
| 1977 | if (r2.is(zero_reg)) { |
| 1978 | bgez(rs, offset); |
| 1979 | } else { |
| 1980 | slt(scratch, rs, r2); |
| 1981 | beq(scratch, zero_reg, offset); |
| 1982 | } |
| 1983 | break; |
| 1984 | case less: |
| 1985 | if (r2.is(zero_reg)) { |
| 1986 | bltz(rs, offset); |
| 1987 | } else { |
| 1988 | slt(scratch, rs, r2); |
| 1989 | bne(scratch, zero_reg, offset); |
| 1990 | } |
| 1991 | break; |
| 1992 | case less_equal: |
| 1993 | if (r2.is(zero_reg)) { |
| 1994 | blez(rs, offset); |
| 1995 | } else { |
| 1996 | slt(scratch, r2, rs); |
| 1997 | beq(scratch, zero_reg, offset); |
| 1998 | } |
| 1999 | break; |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 2000 | // Unsigned comparison. |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2001 | case Ugreater: |
| 2002 | if (r2.is(zero_reg)) { |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame^] | 2003 | bne(rs, zero_reg, offset); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2004 | } else { |
| 2005 | sltu(scratch, r2, rs); |
| 2006 | bne(scratch, zero_reg, offset); |
| 2007 | } |
| 2008 | break; |
| 2009 | case Ugreater_equal: |
| 2010 | if (r2.is(zero_reg)) { |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame^] | 2011 | b(offset); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2012 | } else { |
| 2013 | sltu(scratch, rs, r2); |
| 2014 | beq(scratch, zero_reg, offset); |
| 2015 | } |
| 2016 | break; |
| 2017 | case Uless: |
| 2018 | if (r2.is(zero_reg)) { |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 2019 | // No code needs to be emitted. |
| 2020 | return; |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2021 | } else { |
| 2022 | sltu(scratch, rs, r2); |
| 2023 | bne(scratch, zero_reg, offset); |
| 2024 | } |
| 2025 | break; |
| 2026 | case Uless_equal: |
| 2027 | if (r2.is(zero_reg)) { |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame^] | 2028 | beq(rs, zero_reg, offset); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2029 | } else { |
| 2030 | sltu(scratch, r2, rs); |
| 2031 | beq(scratch, zero_reg, offset); |
| 2032 | } |
| 2033 | break; |
| 2034 | default: |
| 2035 | UNREACHABLE(); |
| 2036 | } |
| 2037 | } else { |
| 2038 | // Be careful to always use shifted_branch_offset only just before the |
| 2039 | // branch instruction, as the location will be remember for patching the |
| 2040 | // target. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2041 | BlockTrampolinePoolScope block_trampoline_pool(this); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2042 | switch (cond) { |
| 2043 | case cc_always: |
| 2044 | b(offset); |
| 2045 | break; |
| 2046 | case eq: |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame^] | 2047 | if (rt.imm32_ == 0) { |
| 2048 | beq(rs, zero_reg, offset); |
| 2049 | } else { |
| 2050 | // We don't want any other register but scratch clobbered. |
| 2051 | DCHECK(!scratch.is(rs)); |
| 2052 | r2 = scratch; |
| 2053 | li(r2, rt); |
| 2054 | beq(rs, r2, offset); |
| 2055 | } |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2056 | break; |
| 2057 | case ne: |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame^] | 2058 | if (rt.imm32_ == 0) { |
| 2059 | bne(rs, zero_reg, offset); |
| 2060 | } else { |
| 2061 | // We don't want any other register but scratch clobbered. |
| 2062 | DCHECK(!scratch.is(rs)); |
| 2063 | r2 = scratch; |
| 2064 | li(r2, rt); |
| 2065 | bne(rs, r2, offset); |
| 2066 | } |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2067 | break; |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2068 | // Signed comparison. |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2069 | case greater: |
| 2070 | if (rt.imm32_ == 0) { |
| 2071 | bgtz(rs, offset); |
| 2072 | } else { |
| 2073 | r2 = scratch; |
| 2074 | li(r2, rt); |
| 2075 | slt(scratch, r2, rs); |
| 2076 | bne(scratch, zero_reg, offset); |
| 2077 | } |
| 2078 | break; |
| 2079 | case greater_equal: |
| 2080 | if (rt.imm32_ == 0) { |
| 2081 | bgez(rs, offset); |
| 2082 | } else if (is_int16(rt.imm32_)) { |
| 2083 | slti(scratch, rs, rt.imm32_); |
| 2084 | beq(scratch, zero_reg, offset); |
| 2085 | } else { |
| 2086 | r2 = scratch; |
| 2087 | li(r2, rt); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 2088 | slt(scratch, rs, r2); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2089 | beq(scratch, zero_reg, offset); |
| 2090 | } |
| 2091 | break; |
| 2092 | case less: |
| 2093 | if (rt.imm32_ == 0) { |
| 2094 | bltz(rs, offset); |
| 2095 | } else if (is_int16(rt.imm32_)) { |
| 2096 | slti(scratch, rs, rt.imm32_); |
| 2097 | bne(scratch, zero_reg, offset); |
| 2098 | } else { |
| 2099 | r2 = scratch; |
| 2100 | li(r2, rt); |
| 2101 | slt(scratch, rs, r2); |
| 2102 | bne(scratch, zero_reg, offset); |
| 2103 | } |
| 2104 | break; |
| 2105 | case less_equal: |
| 2106 | if (rt.imm32_ == 0) { |
| 2107 | blez(rs, offset); |
| 2108 | } else { |
| 2109 | r2 = scratch; |
| 2110 | li(r2, rt); |
| 2111 | slt(scratch, r2, rs); |
| 2112 | beq(scratch, zero_reg, offset); |
| 2113 | } |
| 2114 | break; |
| 2115 | // Unsigned comparison. |
| 2116 | case Ugreater: |
| 2117 | if (rt.imm32_ == 0) { |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame^] | 2118 | bne(rs, zero_reg, offset); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2119 | } else { |
| 2120 | r2 = scratch; |
| 2121 | li(r2, rt); |
| 2122 | sltu(scratch, r2, rs); |
| 2123 | bne(scratch, zero_reg, offset); |
| 2124 | } |
| 2125 | break; |
| 2126 | case Ugreater_equal: |
| 2127 | if (rt.imm32_ == 0) { |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame^] | 2128 | b(offset); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2129 | } else if (is_int16(rt.imm32_)) { |
| 2130 | sltiu(scratch, rs, rt.imm32_); |
| 2131 | beq(scratch, zero_reg, offset); |
| 2132 | } else { |
| 2133 | r2 = scratch; |
| 2134 | li(r2, rt); |
| 2135 | sltu(scratch, rs, r2); |
| 2136 | beq(scratch, zero_reg, offset); |
| 2137 | } |
| 2138 | break; |
| 2139 | case Uless: |
| 2140 | if (rt.imm32_ == 0) { |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 2141 | // No code needs to be emitted. |
| 2142 | return; |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2143 | } else if (is_int16(rt.imm32_)) { |
| 2144 | sltiu(scratch, rs, rt.imm32_); |
| 2145 | bne(scratch, zero_reg, offset); |
| 2146 | } else { |
| 2147 | r2 = scratch; |
| 2148 | li(r2, rt); |
| 2149 | sltu(scratch, rs, r2); |
| 2150 | bne(scratch, zero_reg, offset); |
| 2151 | } |
| 2152 | break; |
| 2153 | case Uless_equal: |
| 2154 | if (rt.imm32_ == 0) { |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame^] | 2155 | beq(rs, zero_reg, offset); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2156 | } else { |
| 2157 | r2 = scratch; |
| 2158 | li(r2, rt); |
| 2159 | sltu(scratch, r2, rs); |
| 2160 | beq(scratch, zero_reg, offset); |
| 2161 | } |
| 2162 | break; |
| 2163 | default: |
| 2164 | UNREACHABLE(); |
| 2165 | } |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 2166 | } |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2167 | // Emit a nop in the branch delay slot if required. |
| 2168 | if (bdslot == PROTECT) |
| 2169 | nop(); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 2170 | } |
| 2171 | |
| 2172 | |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 2173 | void MacroAssembler::BranchShort(Label* L, BranchDelaySlot bdslot) { |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 2174 | // We use branch_offset as an argument for the branch instructions to be sure |
| 2175 | // it is called just before generating the branch instruction, as needed. |
| 2176 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2177 | b(shifted_branch_offset(L, false)); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 2178 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2179 | // Emit a nop in the branch delay slot if required. |
| 2180 | if (bdslot == PROTECT) |
| 2181 | nop(); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 2182 | } |
| 2183 | |
| 2184 | |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 2185 | void MacroAssembler::BranchShort(Label* L, Condition cond, Register rs, |
| 2186 | const Operand& rt, |
| 2187 | BranchDelaySlot bdslot) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2188 | BRANCH_ARGS_CHECK(cond, rs, rt); |
| 2189 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2190 | int32_t offset = 0; |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2191 | Register r2 = no_reg; |
| 2192 | Register scratch = at; |
| 2193 | if (rt.is_reg()) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2194 | BlockTrampolinePoolScope block_trampoline_pool(this); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2195 | r2 = rt.rm_; |
| 2196 | // Be careful to always use shifted_branch_offset only just before the |
| 2197 | // branch instruction, as the location will be remember for patching the |
| 2198 | // target. |
| 2199 | switch (cond) { |
| 2200 | case cc_always: |
| 2201 | offset = shifted_branch_offset(L, false); |
| 2202 | b(offset); |
| 2203 | break; |
| 2204 | case eq: |
| 2205 | offset = shifted_branch_offset(L, false); |
| 2206 | beq(rs, r2, offset); |
| 2207 | break; |
| 2208 | case ne: |
| 2209 | offset = shifted_branch_offset(L, false); |
| 2210 | bne(rs, r2, offset); |
| 2211 | break; |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2212 | // Signed comparison. |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2213 | case greater: |
| 2214 | if (r2.is(zero_reg)) { |
| 2215 | offset = shifted_branch_offset(L, false); |
| 2216 | bgtz(rs, offset); |
| 2217 | } else { |
| 2218 | slt(scratch, r2, rs); |
| 2219 | offset = shifted_branch_offset(L, false); |
| 2220 | bne(scratch, zero_reg, offset); |
| 2221 | } |
| 2222 | break; |
| 2223 | case greater_equal: |
| 2224 | if (r2.is(zero_reg)) { |
| 2225 | offset = shifted_branch_offset(L, false); |
| 2226 | bgez(rs, offset); |
| 2227 | } else { |
| 2228 | slt(scratch, rs, r2); |
| 2229 | offset = shifted_branch_offset(L, false); |
| 2230 | beq(scratch, zero_reg, offset); |
| 2231 | } |
| 2232 | break; |
| 2233 | case less: |
| 2234 | if (r2.is(zero_reg)) { |
| 2235 | offset = shifted_branch_offset(L, false); |
| 2236 | bltz(rs, offset); |
| 2237 | } else { |
| 2238 | slt(scratch, rs, r2); |
| 2239 | offset = shifted_branch_offset(L, false); |
| 2240 | bne(scratch, zero_reg, offset); |
| 2241 | } |
| 2242 | break; |
| 2243 | case less_equal: |
| 2244 | if (r2.is(zero_reg)) { |
| 2245 | offset = shifted_branch_offset(L, false); |
| 2246 | blez(rs, offset); |
| 2247 | } else { |
| 2248 | slt(scratch, r2, rs); |
| 2249 | offset = shifted_branch_offset(L, false); |
| 2250 | beq(scratch, zero_reg, offset); |
| 2251 | } |
| 2252 | break; |
| 2253 | // Unsigned comparison. |
| 2254 | case Ugreater: |
| 2255 | if (r2.is(zero_reg)) { |
| 2256 | offset = shifted_branch_offset(L, false); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame^] | 2257 | bne(rs, zero_reg, offset); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2258 | } else { |
| 2259 | sltu(scratch, r2, rs); |
| 2260 | offset = shifted_branch_offset(L, false); |
| 2261 | bne(scratch, zero_reg, offset); |
| 2262 | } |
| 2263 | break; |
| 2264 | case Ugreater_equal: |
| 2265 | if (r2.is(zero_reg)) { |
| 2266 | offset = shifted_branch_offset(L, false); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame^] | 2267 | b(offset); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2268 | } else { |
| 2269 | sltu(scratch, rs, r2); |
| 2270 | offset = shifted_branch_offset(L, false); |
| 2271 | beq(scratch, zero_reg, offset); |
| 2272 | } |
| 2273 | break; |
| 2274 | case Uless: |
| 2275 | if (r2.is(zero_reg)) { |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 2276 | // No code needs to be emitted. |
| 2277 | return; |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2278 | } else { |
| 2279 | sltu(scratch, rs, r2); |
| 2280 | offset = shifted_branch_offset(L, false); |
| 2281 | bne(scratch, zero_reg, offset); |
| 2282 | } |
| 2283 | break; |
| 2284 | case Uless_equal: |
| 2285 | if (r2.is(zero_reg)) { |
| 2286 | offset = shifted_branch_offset(L, false); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame^] | 2287 | beq(rs, zero_reg, offset); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2288 | } else { |
| 2289 | sltu(scratch, r2, rs); |
| 2290 | offset = shifted_branch_offset(L, false); |
| 2291 | beq(scratch, zero_reg, offset); |
| 2292 | } |
| 2293 | break; |
| 2294 | default: |
| 2295 | UNREACHABLE(); |
| 2296 | } |
| 2297 | } else { |
| 2298 | // Be careful to always use shifted_branch_offset only just before the |
| 2299 | // branch instruction, as the location will be remember for patching the |
| 2300 | // target. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2301 | BlockTrampolinePoolScope block_trampoline_pool(this); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2302 | switch (cond) { |
| 2303 | case cc_always: |
| 2304 | offset = shifted_branch_offset(L, false); |
| 2305 | b(offset); |
| 2306 | break; |
| 2307 | case eq: |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame^] | 2308 | if (rt.imm32_ == 0) { |
| 2309 | offset = shifted_branch_offset(L, false); |
| 2310 | beq(rs, zero_reg, offset); |
| 2311 | } else { |
| 2312 | DCHECK(!scratch.is(rs)); |
| 2313 | r2 = scratch; |
| 2314 | li(r2, rt); |
| 2315 | offset = shifted_branch_offset(L, false); |
| 2316 | beq(rs, r2, offset); |
| 2317 | } |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2318 | break; |
| 2319 | case ne: |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame^] | 2320 | if (rt.imm32_ == 0) { |
| 2321 | offset = shifted_branch_offset(L, false); |
| 2322 | bne(rs, zero_reg, offset); |
| 2323 | } else { |
| 2324 | DCHECK(!scratch.is(rs)); |
| 2325 | r2 = scratch; |
| 2326 | li(r2, rt); |
| 2327 | offset = shifted_branch_offset(L, false); |
| 2328 | bne(rs, r2, offset); |
| 2329 | } |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2330 | break; |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2331 | // Signed comparison. |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2332 | case greater: |
| 2333 | if (rt.imm32_ == 0) { |
| 2334 | offset = shifted_branch_offset(L, false); |
| 2335 | bgtz(rs, offset); |
| 2336 | } else { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2337 | DCHECK(!scratch.is(rs)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2338 | r2 = scratch; |
| 2339 | li(r2, rt); |
| 2340 | slt(scratch, r2, rs); |
| 2341 | offset = shifted_branch_offset(L, false); |
| 2342 | bne(scratch, zero_reg, offset); |
| 2343 | } |
| 2344 | break; |
| 2345 | case greater_equal: |
| 2346 | if (rt.imm32_ == 0) { |
| 2347 | offset = shifted_branch_offset(L, false); |
| 2348 | bgez(rs, offset); |
| 2349 | } else if (is_int16(rt.imm32_)) { |
| 2350 | slti(scratch, rs, rt.imm32_); |
| 2351 | offset = shifted_branch_offset(L, false); |
| 2352 | beq(scratch, zero_reg, offset); |
| 2353 | } else { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2354 | DCHECK(!scratch.is(rs)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2355 | r2 = scratch; |
| 2356 | li(r2, rt); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 2357 | slt(scratch, rs, r2); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2358 | offset = shifted_branch_offset(L, false); |
| 2359 | beq(scratch, zero_reg, offset); |
| 2360 | } |
| 2361 | break; |
| 2362 | case less: |
| 2363 | if (rt.imm32_ == 0) { |
| 2364 | offset = shifted_branch_offset(L, false); |
| 2365 | bltz(rs, offset); |
| 2366 | } else if (is_int16(rt.imm32_)) { |
| 2367 | slti(scratch, rs, rt.imm32_); |
| 2368 | offset = shifted_branch_offset(L, false); |
| 2369 | bne(scratch, zero_reg, offset); |
| 2370 | } else { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2371 | DCHECK(!scratch.is(rs)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2372 | r2 = scratch; |
| 2373 | li(r2, rt); |
| 2374 | slt(scratch, rs, r2); |
| 2375 | offset = shifted_branch_offset(L, false); |
| 2376 | bne(scratch, zero_reg, offset); |
| 2377 | } |
| 2378 | break; |
| 2379 | case less_equal: |
| 2380 | if (rt.imm32_ == 0) { |
| 2381 | offset = shifted_branch_offset(L, false); |
| 2382 | blez(rs, offset); |
| 2383 | } else { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2384 | DCHECK(!scratch.is(rs)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2385 | r2 = scratch; |
| 2386 | li(r2, rt); |
| 2387 | slt(scratch, r2, rs); |
| 2388 | offset = shifted_branch_offset(L, false); |
| 2389 | beq(scratch, zero_reg, offset); |
| 2390 | } |
| 2391 | break; |
| 2392 | // Unsigned comparison. |
| 2393 | case Ugreater: |
| 2394 | if (rt.imm32_ == 0) { |
| 2395 | offset = shifted_branch_offset(L, false); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2396 | bne(rs, zero_reg, offset); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2397 | } else { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2398 | DCHECK(!scratch.is(rs)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2399 | r2 = scratch; |
| 2400 | li(r2, rt); |
| 2401 | sltu(scratch, r2, rs); |
| 2402 | offset = shifted_branch_offset(L, false); |
| 2403 | bne(scratch, zero_reg, offset); |
| 2404 | } |
| 2405 | break; |
| 2406 | case Ugreater_equal: |
| 2407 | if (rt.imm32_ == 0) { |
| 2408 | offset = shifted_branch_offset(L, false); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame^] | 2409 | b(offset); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2410 | } else if (is_int16(rt.imm32_)) { |
| 2411 | sltiu(scratch, rs, rt.imm32_); |
| 2412 | offset = shifted_branch_offset(L, false); |
| 2413 | beq(scratch, zero_reg, offset); |
| 2414 | } else { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2415 | DCHECK(!scratch.is(rs)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2416 | r2 = scratch; |
| 2417 | li(r2, rt); |
| 2418 | sltu(scratch, rs, r2); |
| 2419 | offset = shifted_branch_offset(L, false); |
| 2420 | beq(scratch, zero_reg, offset); |
| 2421 | } |
| 2422 | break; |
| 2423 | case Uless: |
| 2424 | if (rt.imm32_ == 0) { |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 2425 | // No code needs to be emitted. |
| 2426 | return; |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2427 | } else if (is_int16(rt.imm32_)) { |
| 2428 | sltiu(scratch, rs, rt.imm32_); |
| 2429 | offset = shifted_branch_offset(L, false); |
| 2430 | bne(scratch, zero_reg, offset); |
| 2431 | } else { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2432 | DCHECK(!scratch.is(rs)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2433 | r2 = scratch; |
| 2434 | li(r2, rt); |
| 2435 | sltu(scratch, rs, r2); |
| 2436 | offset = shifted_branch_offset(L, false); |
| 2437 | bne(scratch, zero_reg, offset); |
| 2438 | } |
| 2439 | break; |
| 2440 | case Uless_equal: |
| 2441 | if (rt.imm32_ == 0) { |
| 2442 | offset = shifted_branch_offset(L, false); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2443 | beq(rs, zero_reg, offset); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2444 | } else { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2445 | DCHECK(!scratch.is(rs)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2446 | r2 = scratch; |
| 2447 | li(r2, rt); |
| 2448 | sltu(scratch, r2, rs); |
| 2449 | offset = shifted_branch_offset(L, false); |
| 2450 | beq(scratch, zero_reg, offset); |
| 2451 | } |
| 2452 | break; |
| 2453 | default: |
| 2454 | UNREACHABLE(); |
| 2455 | } |
| 2456 | } |
| 2457 | // Check that offset could actually hold on an int16_t. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2458 | DCHECK(is_int16(offset)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2459 | // Emit a nop in the branch delay slot if required. |
| 2460 | if (bdslot == PROTECT) |
| 2461 | nop(); |
| 2462 | } |
| 2463 | |
| 2464 | |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 2465 | void MacroAssembler::BranchAndLink(int16_t offset, BranchDelaySlot bdslot) { |
| 2466 | BranchAndLinkShort(offset, bdslot); |
| 2467 | } |
| 2468 | |
| 2469 | |
| 2470 | void MacroAssembler::BranchAndLink(int16_t offset, Condition cond, Register rs, |
| 2471 | const Operand& rt, |
| 2472 | BranchDelaySlot bdslot) { |
| 2473 | BranchAndLinkShort(offset, cond, rs, rt, bdslot); |
| 2474 | } |
| 2475 | |
| 2476 | |
| 2477 | void MacroAssembler::BranchAndLink(Label* L, BranchDelaySlot bdslot) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2478 | if (L->is_bound()) { |
| 2479 | if (is_near(L)) { |
| 2480 | BranchAndLinkShort(L, bdslot); |
| 2481 | } else { |
| 2482 | Jalr(L, bdslot); |
| 2483 | } |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 2484 | } else { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2485 | if (is_trampoline_emitted()) { |
| 2486 | Jalr(L, bdslot); |
| 2487 | } else { |
| 2488 | BranchAndLinkShort(L, bdslot); |
| 2489 | } |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 2490 | } |
| 2491 | } |
| 2492 | |
| 2493 | |
| 2494 | void MacroAssembler::BranchAndLink(Label* L, Condition cond, Register rs, |
| 2495 | const Operand& rt, |
| 2496 | BranchDelaySlot bdslot) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2497 | if (L->is_bound()) { |
| 2498 | if (is_near(L)) { |
| 2499 | BranchAndLinkShort(L, cond, rs, rt, bdslot); |
| 2500 | } else { |
| 2501 | Label skip; |
| 2502 | Condition neg_cond = NegateCondition(cond); |
| 2503 | BranchShort(&skip, neg_cond, rs, rt); |
| 2504 | Jalr(L, bdslot); |
| 2505 | bind(&skip); |
| 2506 | } |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 2507 | } else { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2508 | if (is_trampoline_emitted()) { |
| 2509 | Label skip; |
| 2510 | Condition neg_cond = NegateCondition(cond); |
| 2511 | BranchShort(&skip, neg_cond, rs, rt); |
| 2512 | Jalr(L, bdslot); |
| 2513 | bind(&skip); |
| 2514 | } else { |
| 2515 | BranchAndLinkShort(L, cond, rs, rt, bdslot); |
| 2516 | } |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 2517 | } |
| 2518 | } |
| 2519 | |
| 2520 | |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 2521 | // We need to use a bgezal or bltzal, but they can't be used directly with the |
| 2522 | // slt instructions. We could use sub or add instead but we would miss overflow |
| 2523 | // cases, so we keep slt and add an intermediate third instruction. |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 2524 | void MacroAssembler::BranchAndLinkShort(int16_t offset, |
| 2525 | BranchDelaySlot bdslot) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2526 | bal(offset); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 2527 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2528 | // Emit a nop in the branch delay slot if required. |
| 2529 | if (bdslot == PROTECT) |
| 2530 | nop(); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 2531 | } |
| 2532 | |
| 2533 | |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 2534 | void MacroAssembler::BranchAndLinkShort(int16_t offset, Condition cond, |
| 2535 | Register rs, const Operand& rt, |
| 2536 | BranchDelaySlot bdslot) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2537 | BRANCH_ARGS_CHECK(cond, rs, rt); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 2538 | Register r2 = no_reg; |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2539 | Register scratch = at; |
| 2540 | |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 2541 | if (rt.is_reg()) { |
| 2542 | r2 = rt.rm_; |
| 2543 | } else if (cond != cc_always) { |
| 2544 | r2 = scratch; |
| 2545 | li(r2, rt); |
| 2546 | } |
| 2547 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2548 | if (!IsMipsArchVariant(kMips32r6)) { |
| 2549 | BlockTrampolinePoolScope block_trampoline_pool(this); |
| 2550 | switch (cond) { |
| 2551 | case cc_always: |
| 2552 | bal(offset); |
| 2553 | break; |
| 2554 | case eq: |
| 2555 | bne(rs, r2, 2); |
| 2556 | nop(); |
| 2557 | bal(offset); |
| 2558 | break; |
| 2559 | case ne: |
| 2560 | beq(rs, r2, 2); |
| 2561 | nop(); |
| 2562 | bal(offset); |
| 2563 | break; |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 2564 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2565 | // Signed comparison. |
| 2566 | case greater: |
| 2567 | slt(scratch, r2, rs); |
| 2568 | addiu(scratch, scratch, -1); |
| 2569 | bgezal(scratch, offset); |
| 2570 | break; |
| 2571 | case greater_equal: |
| 2572 | slt(scratch, rs, r2); |
| 2573 | addiu(scratch, scratch, -1); |
| 2574 | bltzal(scratch, offset); |
| 2575 | break; |
| 2576 | case less: |
| 2577 | slt(scratch, rs, r2); |
| 2578 | addiu(scratch, scratch, -1); |
| 2579 | bgezal(scratch, offset); |
| 2580 | break; |
| 2581 | case less_equal: |
| 2582 | slt(scratch, r2, rs); |
| 2583 | addiu(scratch, scratch, -1); |
| 2584 | bltzal(scratch, offset); |
| 2585 | break; |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 2586 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2587 | // Unsigned comparison. |
| 2588 | case Ugreater: |
| 2589 | sltu(scratch, r2, rs); |
| 2590 | addiu(scratch, scratch, -1); |
| 2591 | bgezal(scratch, offset); |
| 2592 | break; |
| 2593 | case Ugreater_equal: |
| 2594 | sltu(scratch, rs, r2); |
| 2595 | addiu(scratch, scratch, -1); |
| 2596 | bltzal(scratch, offset); |
| 2597 | break; |
| 2598 | case Uless: |
| 2599 | sltu(scratch, rs, r2); |
| 2600 | addiu(scratch, scratch, -1); |
| 2601 | bgezal(scratch, offset); |
| 2602 | break; |
| 2603 | case Uless_equal: |
| 2604 | sltu(scratch, r2, rs); |
| 2605 | addiu(scratch, scratch, -1); |
| 2606 | bltzal(scratch, offset); |
| 2607 | break; |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 2608 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2609 | default: |
| 2610 | UNREACHABLE(); |
| 2611 | } |
| 2612 | } else { |
| 2613 | BlockTrampolinePoolScope block_trampoline_pool(this); |
| 2614 | switch (cond) { |
| 2615 | case cc_always: |
| 2616 | bal(offset); |
| 2617 | break; |
| 2618 | case eq: |
| 2619 | bne(rs, r2, 2); |
| 2620 | nop(); |
| 2621 | bal(offset); |
| 2622 | break; |
| 2623 | case ne: |
| 2624 | beq(rs, r2, 2); |
| 2625 | nop(); |
| 2626 | bal(offset); |
| 2627 | break; |
| 2628 | |
| 2629 | // Signed comparison. |
| 2630 | case greater: |
| 2631 | // rs > rt |
| 2632 | slt(scratch, r2, rs); |
| 2633 | beq(scratch, zero_reg, 2); |
| 2634 | nop(); |
| 2635 | bal(offset); |
| 2636 | break; |
| 2637 | case greater_equal: |
| 2638 | // rs >= rt |
| 2639 | slt(scratch, rs, r2); |
| 2640 | bne(scratch, zero_reg, 2); |
| 2641 | nop(); |
| 2642 | bal(offset); |
| 2643 | break; |
| 2644 | case less: |
| 2645 | // rs < r2 |
| 2646 | slt(scratch, rs, r2); |
| 2647 | bne(scratch, zero_reg, 2); |
| 2648 | nop(); |
| 2649 | bal(offset); |
| 2650 | break; |
| 2651 | case less_equal: |
| 2652 | // rs <= r2 |
| 2653 | slt(scratch, r2, rs); |
| 2654 | bne(scratch, zero_reg, 2); |
| 2655 | nop(); |
| 2656 | bal(offset); |
| 2657 | break; |
| 2658 | |
| 2659 | |
| 2660 | // Unsigned comparison. |
| 2661 | case Ugreater: |
| 2662 | // rs > rt |
| 2663 | sltu(scratch, r2, rs); |
| 2664 | beq(scratch, zero_reg, 2); |
| 2665 | nop(); |
| 2666 | bal(offset); |
| 2667 | break; |
| 2668 | case Ugreater_equal: |
| 2669 | // rs >= rt |
| 2670 | sltu(scratch, rs, r2); |
| 2671 | bne(scratch, zero_reg, 2); |
| 2672 | nop(); |
| 2673 | bal(offset); |
| 2674 | break; |
| 2675 | case Uless: |
| 2676 | // rs < r2 |
| 2677 | sltu(scratch, rs, r2); |
| 2678 | bne(scratch, zero_reg, 2); |
| 2679 | nop(); |
| 2680 | bal(offset); |
| 2681 | break; |
| 2682 | case Uless_equal: |
| 2683 | // rs <= r2 |
| 2684 | sltu(scratch, r2, rs); |
| 2685 | bne(scratch, zero_reg, 2); |
| 2686 | nop(); |
| 2687 | bal(offset); |
| 2688 | break; |
| 2689 | default: |
| 2690 | UNREACHABLE(); |
| 2691 | } |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 2692 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2693 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2694 | // Emit a nop in the branch delay slot if required. |
| 2695 | if (bdslot == PROTECT) |
| 2696 | nop(); |
| 2697 | } |
| 2698 | |
| 2699 | |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 2700 | void MacroAssembler::BranchAndLinkShort(Label* L, BranchDelaySlot bdslot) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2701 | bal(shifted_branch_offset(L, false)); |
| 2702 | |
| 2703 | // Emit a nop in the branch delay slot if required. |
| 2704 | if (bdslot == PROTECT) |
| 2705 | nop(); |
| 2706 | } |
| 2707 | |
| 2708 | |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 2709 | void MacroAssembler::BranchAndLinkShort(Label* L, Condition cond, Register rs, |
| 2710 | const Operand& rt, |
| 2711 | BranchDelaySlot bdslot) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2712 | BRANCH_ARGS_CHECK(cond, rs, rt); |
| 2713 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2714 | int32_t offset = 0; |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2715 | Register r2 = no_reg; |
| 2716 | Register scratch = at; |
| 2717 | if (rt.is_reg()) { |
| 2718 | r2 = rt.rm_; |
| 2719 | } else if (cond != cc_always) { |
| 2720 | r2 = scratch; |
| 2721 | li(r2, rt); |
| 2722 | } |
| 2723 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2724 | if (!IsMipsArchVariant(kMips32r6)) { |
| 2725 | BlockTrampolinePoolScope block_trampoline_pool(this); |
| 2726 | switch (cond) { |
| 2727 | case cc_always: |
| 2728 | offset = shifted_branch_offset(L, false); |
| 2729 | bal(offset); |
| 2730 | break; |
| 2731 | case eq: |
| 2732 | bne(rs, r2, 2); |
| 2733 | nop(); |
| 2734 | offset = shifted_branch_offset(L, false); |
| 2735 | bal(offset); |
| 2736 | break; |
| 2737 | case ne: |
| 2738 | beq(rs, r2, 2); |
| 2739 | nop(); |
| 2740 | offset = shifted_branch_offset(L, false); |
| 2741 | bal(offset); |
| 2742 | break; |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2743 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2744 | // Signed comparison. |
| 2745 | case greater: |
| 2746 | slt(scratch, r2, rs); |
| 2747 | addiu(scratch, scratch, -1); |
| 2748 | offset = shifted_branch_offset(L, false); |
| 2749 | bgezal(scratch, offset); |
| 2750 | break; |
| 2751 | case greater_equal: |
| 2752 | slt(scratch, rs, r2); |
| 2753 | addiu(scratch, scratch, -1); |
| 2754 | offset = shifted_branch_offset(L, false); |
| 2755 | bltzal(scratch, offset); |
| 2756 | break; |
| 2757 | case less: |
| 2758 | slt(scratch, rs, r2); |
| 2759 | addiu(scratch, scratch, -1); |
| 2760 | offset = shifted_branch_offset(L, false); |
| 2761 | bgezal(scratch, offset); |
| 2762 | break; |
| 2763 | case less_equal: |
| 2764 | slt(scratch, r2, rs); |
| 2765 | addiu(scratch, scratch, -1); |
| 2766 | offset = shifted_branch_offset(L, false); |
| 2767 | bltzal(scratch, offset); |
| 2768 | break; |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2769 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2770 | // Unsigned comparison. |
| 2771 | case Ugreater: |
| 2772 | sltu(scratch, r2, rs); |
| 2773 | addiu(scratch, scratch, -1); |
| 2774 | offset = shifted_branch_offset(L, false); |
| 2775 | bgezal(scratch, offset); |
| 2776 | break; |
| 2777 | case Ugreater_equal: |
| 2778 | sltu(scratch, rs, r2); |
| 2779 | addiu(scratch, scratch, -1); |
| 2780 | offset = shifted_branch_offset(L, false); |
| 2781 | bltzal(scratch, offset); |
| 2782 | break; |
| 2783 | case Uless: |
| 2784 | sltu(scratch, rs, r2); |
| 2785 | addiu(scratch, scratch, -1); |
| 2786 | offset = shifted_branch_offset(L, false); |
| 2787 | bgezal(scratch, offset); |
| 2788 | break; |
| 2789 | case Uless_equal: |
| 2790 | sltu(scratch, r2, rs); |
| 2791 | addiu(scratch, scratch, -1); |
| 2792 | offset = shifted_branch_offset(L, false); |
| 2793 | bltzal(scratch, offset); |
| 2794 | break; |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2795 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2796 | default: |
| 2797 | UNREACHABLE(); |
| 2798 | } |
| 2799 | } else { |
| 2800 | BlockTrampolinePoolScope block_trampoline_pool(this); |
| 2801 | switch (cond) { |
| 2802 | case cc_always: |
| 2803 | offset = shifted_branch_offset(L, false); |
| 2804 | bal(offset); |
| 2805 | break; |
| 2806 | case eq: |
| 2807 | bne(rs, r2, 2); |
| 2808 | nop(); |
| 2809 | offset = shifted_branch_offset(L, false); |
| 2810 | bal(offset); |
| 2811 | break; |
| 2812 | case ne: |
| 2813 | beq(rs, r2, 2); |
| 2814 | nop(); |
| 2815 | offset = shifted_branch_offset(L, false); |
| 2816 | bal(offset); |
| 2817 | break; |
| 2818 | |
| 2819 | // Signed comparison. |
| 2820 | case greater: |
| 2821 | // rs > rt |
| 2822 | slt(scratch, r2, rs); |
| 2823 | beq(scratch, zero_reg, 2); |
| 2824 | nop(); |
| 2825 | offset = shifted_branch_offset(L, false); |
| 2826 | bal(offset); |
| 2827 | break; |
| 2828 | case greater_equal: |
| 2829 | // rs >= rt |
| 2830 | slt(scratch, rs, r2); |
| 2831 | bne(scratch, zero_reg, 2); |
| 2832 | nop(); |
| 2833 | offset = shifted_branch_offset(L, false); |
| 2834 | bal(offset); |
| 2835 | break; |
| 2836 | case less: |
| 2837 | // rs < r2 |
| 2838 | slt(scratch, rs, r2); |
| 2839 | bne(scratch, zero_reg, 2); |
| 2840 | nop(); |
| 2841 | offset = shifted_branch_offset(L, false); |
| 2842 | bal(offset); |
| 2843 | break; |
| 2844 | case less_equal: |
| 2845 | // rs <= r2 |
| 2846 | slt(scratch, r2, rs); |
| 2847 | bne(scratch, zero_reg, 2); |
| 2848 | nop(); |
| 2849 | offset = shifted_branch_offset(L, false); |
| 2850 | bal(offset); |
| 2851 | break; |
| 2852 | |
| 2853 | |
| 2854 | // Unsigned comparison. |
| 2855 | case Ugreater: |
| 2856 | // rs > rt |
| 2857 | sltu(scratch, r2, rs); |
| 2858 | beq(scratch, zero_reg, 2); |
| 2859 | nop(); |
| 2860 | offset = shifted_branch_offset(L, false); |
| 2861 | bal(offset); |
| 2862 | break; |
| 2863 | case Ugreater_equal: |
| 2864 | // rs >= rt |
| 2865 | sltu(scratch, rs, r2); |
| 2866 | bne(scratch, zero_reg, 2); |
| 2867 | nop(); |
| 2868 | offset = shifted_branch_offset(L, false); |
| 2869 | bal(offset); |
| 2870 | break; |
| 2871 | case Uless: |
| 2872 | // rs < r2 |
| 2873 | sltu(scratch, rs, r2); |
| 2874 | bne(scratch, zero_reg, 2); |
| 2875 | nop(); |
| 2876 | offset = shifted_branch_offset(L, false); |
| 2877 | bal(offset); |
| 2878 | break; |
| 2879 | case Uless_equal: |
| 2880 | // rs <= r2 |
| 2881 | sltu(scratch, r2, rs); |
| 2882 | bne(scratch, zero_reg, 2); |
| 2883 | nop(); |
| 2884 | offset = shifted_branch_offset(L, false); |
| 2885 | bal(offset); |
| 2886 | break; |
| 2887 | |
| 2888 | default: |
| 2889 | UNREACHABLE(); |
| 2890 | } |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2891 | } |
| 2892 | |
| 2893 | // Check that offset could actually hold on an int16_t. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2894 | DCHECK(is_int16(offset)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2895 | |
| 2896 | // Emit a nop in the branch delay slot if required. |
| 2897 | if (bdslot == PROTECT) |
| 2898 | nop(); |
| 2899 | } |
| 2900 | |
| 2901 | |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 2902 | void MacroAssembler::Jump(Register target, |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2903 | Condition cond, |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 2904 | Register rs, |
| 2905 | const Operand& rt, |
| 2906 | BranchDelaySlot bd) { |
| 2907 | BlockTrampolinePoolScope block_trampoline_pool(this); |
| 2908 | if (cond == cc_always) { |
| 2909 | jr(target); |
| 2910 | } else { |
| 2911 | BRANCH_ARGS_CHECK(cond, rs, rt); |
| 2912 | Branch(2, NegateCondition(cond), rs, rt); |
| 2913 | jr(target); |
| 2914 | } |
| 2915 | // Emit a nop in the branch delay slot if required. |
| 2916 | if (bd == PROTECT) |
| 2917 | nop(); |
| 2918 | } |
| 2919 | |
| 2920 | |
| 2921 | void MacroAssembler::Jump(intptr_t target, |
| 2922 | RelocInfo::Mode rmode, |
| 2923 | Condition cond, |
| 2924 | Register rs, |
| 2925 | const Operand& rt, |
| 2926 | BranchDelaySlot bd) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2927 | Label skip; |
| 2928 | if (cond != cc_always) { |
| 2929 | Branch(USE_DELAY_SLOT, &skip, NegateCondition(cond), rs, rt); |
| 2930 | } |
| 2931 | // The first instruction of 'li' may be placed in the delay slot. |
| 2932 | // This is not an issue, t9 is expected to be clobbered anyway. |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 2933 | li(t9, Operand(target, rmode)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2934 | Jump(t9, al, zero_reg, Operand(zero_reg), bd); |
| 2935 | bind(&skip); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 2936 | } |
| 2937 | |
| 2938 | |
| 2939 | void MacroAssembler::Jump(Address target, |
| 2940 | RelocInfo::Mode rmode, |
| 2941 | Condition cond, |
| 2942 | Register rs, |
| 2943 | const Operand& rt, |
| 2944 | BranchDelaySlot bd) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2945 | DCHECK(!RelocInfo::IsCodeTarget(rmode)); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 2946 | Jump(reinterpret_cast<intptr_t>(target), rmode, cond, rs, rt, bd); |
| 2947 | } |
| 2948 | |
| 2949 | |
| 2950 | void MacroAssembler::Jump(Handle<Code> code, |
| 2951 | RelocInfo::Mode rmode, |
| 2952 | Condition cond, |
| 2953 | Register rs, |
| 2954 | const Operand& rt, |
| 2955 | BranchDelaySlot bd) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2956 | DCHECK(RelocInfo::IsCodeTarget(rmode)); |
| 2957 | AllowDeferredHandleDereference embedding_raw_address; |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 2958 | Jump(reinterpret_cast<intptr_t>(code.location()), rmode, cond, rs, rt, bd); |
| 2959 | } |
| 2960 | |
| 2961 | |
| 2962 | int MacroAssembler::CallSize(Register target, |
| 2963 | Condition cond, |
| 2964 | Register rs, |
| 2965 | const Operand& rt, |
| 2966 | BranchDelaySlot bd) { |
| 2967 | int size = 0; |
| 2968 | |
| 2969 | if (cond == cc_always) { |
| 2970 | size += 1; |
| 2971 | } else { |
| 2972 | size += 3; |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2973 | } |
| 2974 | |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 2975 | if (bd == PROTECT) |
| 2976 | size += 1; |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2977 | |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 2978 | return size * kInstrSize; |
| 2979 | } |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2980 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2981 | |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 2982 | // Note: To call gcc-compiled C code on mips, you must call thru t9. |
| 2983 | void MacroAssembler::Call(Register target, |
| 2984 | Condition cond, |
| 2985 | Register rs, |
| 2986 | const Operand& rt, |
| 2987 | BranchDelaySlot bd) { |
| 2988 | BlockTrampolinePoolScope block_trampoline_pool(this); |
| 2989 | Label start; |
| 2990 | bind(&start); |
| 2991 | if (cond == cc_always) { |
| 2992 | jalr(target); |
| 2993 | } else { |
| 2994 | BRANCH_ARGS_CHECK(cond, rs, rt); |
| 2995 | Branch(2, NegateCondition(cond), rs, rt); |
| 2996 | jalr(target); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2997 | } |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 2998 | // Emit a nop in the branch delay slot if required. |
| 2999 | if (bd == PROTECT) |
| 3000 | nop(); |
| 3001 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3002 | DCHECK_EQ(CallSize(target, cond, rs, rt, bd), |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 3003 | SizeOfCodeGeneratedSince(&start)); |
| 3004 | } |
| 3005 | |
| 3006 | |
| 3007 | int MacroAssembler::CallSize(Address target, |
| 3008 | RelocInfo::Mode rmode, |
| 3009 | Condition cond, |
| 3010 | Register rs, |
| 3011 | const Operand& rt, |
| 3012 | BranchDelaySlot bd) { |
| 3013 | int size = CallSize(t9, cond, rs, rt, bd); |
| 3014 | return size + 2 * kInstrSize; |
| 3015 | } |
| 3016 | |
| 3017 | |
| 3018 | void MacroAssembler::Call(Address target, |
| 3019 | RelocInfo::Mode rmode, |
| 3020 | Condition cond, |
| 3021 | Register rs, |
| 3022 | const Operand& rt, |
| 3023 | BranchDelaySlot bd) { |
| 3024 | BlockTrampolinePoolScope block_trampoline_pool(this); |
| 3025 | Label start; |
| 3026 | bind(&start); |
| 3027 | int32_t target_int = reinterpret_cast<int32_t>(target); |
| 3028 | // Must record previous source positions before the |
| 3029 | // li() generates a new code target. |
| 3030 | positions_recorder()->WriteRecordedPositions(); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3031 | li(t9, Operand(target_int, rmode), CONSTANT_SIZE); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 3032 | Call(t9, cond, rs, rt, bd); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3033 | DCHECK_EQ(CallSize(target, rmode, cond, rs, rt, bd), |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 3034 | SizeOfCodeGeneratedSince(&start)); |
| 3035 | } |
| 3036 | |
| 3037 | |
| 3038 | int MacroAssembler::CallSize(Handle<Code> code, |
| 3039 | RelocInfo::Mode rmode, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3040 | TypeFeedbackId ast_id, |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 3041 | Condition cond, |
| 3042 | Register rs, |
| 3043 | const Operand& rt, |
| 3044 | BranchDelaySlot bd) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3045 | AllowDeferredHandleDereference using_raw_address; |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 3046 | return CallSize(reinterpret_cast<Address>(code.location()), |
| 3047 | rmode, cond, rs, rt, bd); |
| 3048 | } |
| 3049 | |
| 3050 | |
| 3051 | void MacroAssembler::Call(Handle<Code> code, |
| 3052 | RelocInfo::Mode rmode, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3053 | TypeFeedbackId ast_id, |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 3054 | Condition cond, |
| 3055 | Register rs, |
| 3056 | const Operand& rt, |
| 3057 | BranchDelaySlot bd) { |
| 3058 | BlockTrampolinePoolScope block_trampoline_pool(this); |
| 3059 | Label start; |
| 3060 | bind(&start); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3061 | DCHECK(RelocInfo::IsCodeTarget(rmode)); |
| 3062 | if (rmode == RelocInfo::CODE_TARGET && !ast_id.IsNone()) { |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 3063 | SetRecordedAstId(ast_id); |
| 3064 | rmode = RelocInfo::CODE_TARGET_WITH_ID; |
| 3065 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3066 | AllowDeferredHandleDereference embedding_raw_address; |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 3067 | Call(reinterpret_cast<Address>(code.location()), rmode, cond, rs, rt, bd); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3068 | DCHECK_EQ(CallSize(code, rmode, ast_id, cond, rs, rt, bd), |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 3069 | SizeOfCodeGeneratedSince(&start)); |
| 3070 | } |
| 3071 | |
| 3072 | |
| 3073 | void MacroAssembler::Ret(Condition cond, |
| 3074 | Register rs, |
| 3075 | const Operand& rt, |
| 3076 | BranchDelaySlot bd) { |
| 3077 | Jump(ra, cond, rs, rt, bd); |
| 3078 | } |
| 3079 | |
| 3080 | |
| 3081 | void MacroAssembler::J(Label* L, BranchDelaySlot bdslot) { |
| 3082 | BlockTrampolinePoolScope block_trampoline_pool(this); |
| 3083 | |
| 3084 | uint32_t imm28; |
| 3085 | imm28 = jump_address(L); |
| 3086 | imm28 &= kImm28Mask; |
| 3087 | { BlockGrowBufferScope block_buf_growth(this); |
| 3088 | // Buffer growth (and relocation) must be blocked for internal references |
| 3089 | // until associated instructions are emitted and available to be patched. |
| 3090 | RecordRelocInfo(RelocInfo::INTERNAL_REFERENCE); |
| 3091 | j(imm28); |
| 3092 | } |
| 3093 | // Emit a nop in the branch delay slot if required. |
| 3094 | if (bdslot == PROTECT) |
| 3095 | nop(); |
| 3096 | } |
| 3097 | |
| 3098 | |
| 3099 | void MacroAssembler::Jr(Label* L, BranchDelaySlot bdslot) { |
| 3100 | BlockTrampolinePoolScope block_trampoline_pool(this); |
| 3101 | |
| 3102 | uint32_t imm32; |
| 3103 | imm32 = jump_address(L); |
| 3104 | { BlockGrowBufferScope block_buf_growth(this); |
| 3105 | // Buffer growth (and relocation) must be blocked for internal references |
| 3106 | // until associated instructions are emitted and available to be patched. |
| 3107 | RecordRelocInfo(RelocInfo::INTERNAL_REFERENCE); |
| 3108 | lui(at, (imm32 & kHiMask) >> kLuiShift); |
| 3109 | ori(at, at, (imm32 & kImm16Mask)); |
| 3110 | } |
| 3111 | jr(at); |
| 3112 | |
| 3113 | // Emit a nop in the branch delay slot if required. |
| 3114 | if (bdslot == PROTECT) |
| 3115 | nop(); |
| 3116 | } |
| 3117 | |
| 3118 | |
| 3119 | void MacroAssembler::Jalr(Label* L, BranchDelaySlot bdslot) { |
| 3120 | BlockTrampolinePoolScope block_trampoline_pool(this); |
| 3121 | |
| 3122 | uint32_t imm32; |
| 3123 | imm32 = jump_address(L); |
| 3124 | { BlockGrowBufferScope block_buf_growth(this); |
| 3125 | // Buffer growth (and relocation) must be blocked for internal references |
| 3126 | // until associated instructions are emitted and available to be patched. |
| 3127 | RecordRelocInfo(RelocInfo::INTERNAL_REFERENCE); |
| 3128 | lui(at, (imm32 & kHiMask) >> kLuiShift); |
| 3129 | ori(at, at, (imm32 & kImm16Mask)); |
| 3130 | } |
| 3131 | jalr(at); |
| 3132 | |
| 3133 | // Emit a nop in the branch delay slot if required. |
| 3134 | if (bdslot == PROTECT) |
| 3135 | nop(); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3136 | } |
| 3137 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3138 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3139 | void MacroAssembler::DropAndRet(int drop) { |
| 3140 | Ret(USE_DELAY_SLOT); |
| 3141 | addiu(sp, sp, drop * kPointerSize); |
| 3142 | } |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3143 | |
| 3144 | void MacroAssembler::DropAndRet(int drop, |
| 3145 | Condition cond, |
| 3146 | Register r1, |
| 3147 | const Operand& r2) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3148 | // Both Drop and Ret need to be conditional. |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3149 | Label skip; |
| 3150 | if (cond != cc_always) { |
| 3151 | Branch(&skip, NegateCondition(cond), r1, r2); |
| 3152 | } |
| 3153 | |
| 3154 | Drop(drop); |
| 3155 | Ret(); |
| 3156 | |
| 3157 | if (cond != cc_always) { |
| 3158 | bind(&skip); |
| 3159 | } |
| 3160 | } |
| 3161 | |
| 3162 | |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 3163 | void MacroAssembler::Drop(int count, |
| 3164 | Condition cond, |
| 3165 | Register reg, |
| 3166 | const Operand& op) { |
| 3167 | if (count <= 0) { |
| 3168 | return; |
| 3169 | } |
| 3170 | |
| 3171 | Label skip; |
| 3172 | |
| 3173 | if (cond != al) { |
| 3174 | Branch(&skip, NegateCondition(cond), reg, op); |
| 3175 | } |
| 3176 | |
| 3177 | addiu(sp, sp, count * kPointerSize); |
| 3178 | |
| 3179 | if (cond != al) { |
| 3180 | bind(&skip); |
| 3181 | } |
| 3182 | } |
| 3183 | |
| 3184 | |
| 3185 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3186 | void MacroAssembler::Swap(Register reg1, |
| 3187 | Register reg2, |
| 3188 | Register scratch) { |
| 3189 | if (scratch.is(no_reg)) { |
| 3190 | Xor(reg1, reg1, Operand(reg2)); |
| 3191 | Xor(reg2, reg2, Operand(reg1)); |
| 3192 | Xor(reg1, reg1, Operand(reg2)); |
| 3193 | } else { |
| 3194 | mov(scratch, reg1); |
| 3195 | mov(reg1, reg2); |
| 3196 | mov(reg2, scratch); |
| 3197 | } |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 3198 | } |
| 3199 | |
| 3200 | |
| 3201 | void MacroAssembler::Call(Label* target) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3202 | BranchAndLink(target); |
| 3203 | } |
| 3204 | |
| 3205 | |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 3206 | void MacroAssembler::Push(Handle<Object> handle) { |
| 3207 | li(at, Operand(handle)); |
| 3208 | push(at); |
| 3209 | } |
| 3210 | |
| 3211 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3212 | void MacroAssembler::DebugBreak() { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3213 | PrepareCEntryArgs(0); |
| 3214 | PrepareCEntryFunction(ExternalReference(Runtime::kDebugBreak, isolate())); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3215 | CEntryStub ces(isolate(), 1); |
| 3216 | DCHECK(AllowThisStubCall(&ces)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3217 | Call(ces.GetCode(), RelocInfo::DEBUG_BREAK); |
| 3218 | } |
| 3219 | |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 3220 | |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 3221 | // --------------------------------------------------------------------------- |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3222 | // Exception handling. |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 3223 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3224 | void MacroAssembler::PushTryHandler(StackHandler::Kind kind, |
| 3225 | int handler_index) { |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 3226 | // Adjust this code if not the case. |
Ben Murdoch | 69a99ed | 2011-11-30 16:03:39 +0000 | [diff] [blame] | 3227 | STATIC_ASSERT(StackHandlerConstants::kSize == 5 * kPointerSize); |
| 3228 | STATIC_ASSERT(StackHandlerConstants::kNextOffset == 0 * kPointerSize); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3229 | STATIC_ASSERT(StackHandlerConstants::kCodeOffset == 1 * kPointerSize); |
| 3230 | STATIC_ASSERT(StackHandlerConstants::kStateOffset == 2 * kPointerSize); |
| 3231 | STATIC_ASSERT(StackHandlerConstants::kContextOffset == 3 * kPointerSize); |
| 3232 | STATIC_ASSERT(StackHandlerConstants::kFPOffset == 4 * kPointerSize); |
Ben Murdoch | 69a99ed | 2011-11-30 16:03:39 +0000 | [diff] [blame] | 3233 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3234 | // For the JSEntry handler, we must preserve a0-a3 and s0. |
| 3235 | // t1-t3 are available. We will build up the handler from the bottom by |
| 3236 | // pushing on the stack. |
| 3237 | // Set up the code object (t1) and the state (t2) for pushing. |
| 3238 | unsigned state = |
| 3239 | StackHandler::IndexField::encode(handler_index) | |
| 3240 | StackHandler::KindField::encode(kind); |
| 3241 | li(t1, Operand(CodeObject()), CONSTANT_SIZE); |
| 3242 | li(t2, Operand(state)); |
Ben Murdoch | 592a9fc | 2012-03-05 11:04:45 +0000 | [diff] [blame] | 3243 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3244 | // Push the frame pointer, context, state, and code object. |
| 3245 | if (kind == StackHandler::JS_ENTRY) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3246 | DCHECK_EQ(Smi::FromInt(0), 0); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3247 | // The second zero_reg indicates no context. |
| 3248 | // The first zero_reg is the NULL frame pointer. |
| 3249 | // The operands are reversed to match the order of MultiPush/Pop. |
| 3250 | Push(zero_reg, zero_reg, t2, t1); |
Ben Murdoch | 5d4cdbf | 2012-04-11 10:23:59 +0100 | [diff] [blame] | 3251 | } else { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3252 | MultiPush(t1.bit() | t2.bit() | cp.bit() | fp.bit()); |
Ben Murdoch | 85b7179 | 2012-04-11 18:30:58 +0100 | [diff] [blame] | 3253 | } |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3254 | |
| 3255 | // Link the current handler as the next handler. |
| 3256 | li(t2, Operand(ExternalReference(Isolate::kHandlerAddress, isolate()))); |
| 3257 | lw(t1, MemOperand(t2)); |
| 3258 | push(t1); |
| 3259 | // Set this new handler as the current one. |
| 3260 | sw(sp, MemOperand(t2)); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 3261 | } |
| 3262 | |
| 3263 | |
| 3264 | void MacroAssembler::PopTryHandler() { |
Ben Murdoch | 69a99ed | 2011-11-30 16:03:39 +0000 | [diff] [blame] | 3265 | STATIC_ASSERT(StackHandlerConstants::kNextOffset == 0); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3266 | pop(a1); |
| 3267 | Addu(sp, sp, Operand(StackHandlerConstants::kSize - kPointerSize)); |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 3268 | li(at, Operand(ExternalReference(Isolate::kHandlerAddress, isolate()))); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3269 | sw(a1, MemOperand(at)); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 3270 | } |
| 3271 | |
| 3272 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3273 | void MacroAssembler::JumpToHandlerEntry() { |
| 3274 | // Compute the handler entry address and jump to it. The handler table is |
| 3275 | // a fixed array of (smi-tagged) code offsets. |
| 3276 | // v0 = exception, a1 = code object, a2 = state. |
| 3277 | lw(a3, FieldMemOperand(a1, Code::kHandlerTableOffset)); // Handler table. |
| 3278 | Addu(a3, a3, Operand(FixedArray::kHeaderSize - kHeapObjectTag)); |
| 3279 | srl(a2, a2, StackHandler::kKindWidth); // Handler index. |
| 3280 | sll(a2, a2, kPointerSizeLog2); |
| 3281 | Addu(a2, a3, a2); |
| 3282 | lw(a2, MemOperand(a2)); // Smi-tagged offset. |
| 3283 | Addu(a1, a1, Operand(Code::kHeaderSize - kHeapObjectTag)); // Code start. |
| 3284 | sra(t9, a2, kSmiTagSize); |
| 3285 | Addu(t9, t9, a1); |
| 3286 | Jump(t9); // Jump. |
| 3287 | } |
Ben Murdoch | 592a9fc | 2012-03-05 11:04:45 +0000 | [diff] [blame] | 3288 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3289 | |
| 3290 | void MacroAssembler::Throw(Register value) { |
Ben Murdoch | 85b7179 | 2012-04-11 18:30:58 +0100 | [diff] [blame] | 3291 | // Adjust this code if not the case. |
| 3292 | STATIC_ASSERT(StackHandlerConstants::kSize == 5 * kPointerSize); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3293 | STATIC_ASSERT(StackHandlerConstants::kNextOffset == 0); |
| 3294 | STATIC_ASSERT(StackHandlerConstants::kCodeOffset == 1 * kPointerSize); |
| 3295 | STATIC_ASSERT(StackHandlerConstants::kStateOffset == 2 * kPointerSize); |
| 3296 | STATIC_ASSERT(StackHandlerConstants::kContextOffset == 3 * kPointerSize); |
| 3297 | STATIC_ASSERT(StackHandlerConstants::kFPOffset == 4 * kPointerSize); |
Ben Murdoch | 85b7179 | 2012-04-11 18:30:58 +0100 | [diff] [blame] | 3298 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3299 | // The exception is expected in v0. |
| 3300 | Move(v0, value); |
| 3301 | |
| 3302 | // Drop the stack pointer to the top of the top handler. |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 3303 | li(a3, Operand(ExternalReference(Isolate::kHandlerAddress, |
Ben Murdoch | 69a99ed | 2011-11-30 16:03:39 +0000 | [diff] [blame] | 3304 | isolate()))); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3305 | lw(sp, MemOperand(a3)); |
| 3306 | |
Ben Murdoch | 69a99ed | 2011-11-30 16:03:39 +0000 | [diff] [blame] | 3307 | // Restore the next handler. |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3308 | pop(a2); |
| 3309 | sw(a2, MemOperand(a3)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3310 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3311 | // Get the code object (a1) and state (a2). Restore the context and frame |
| 3312 | // pointer. |
| 3313 | MultiPop(a1.bit() | a2.bit() | cp.bit() | fp.bit()); |
Ben Murdoch | 69a99ed | 2011-11-30 16:03:39 +0000 | [diff] [blame] | 3314 | |
| 3315 | // If the handler is a JS frame, restore the context to the frame. |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3316 | // (kind == ENTRY) == (fp == 0) == (cp == 0), so we could test either fp |
| 3317 | // or cp. |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3318 | Label done; |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3319 | Branch(&done, eq, cp, Operand(zero_reg)); |
Ben Murdoch | 69a99ed | 2011-11-30 16:03:39 +0000 | [diff] [blame] | 3320 | sw(cp, MemOperand(fp, StandardFrameConstants::kContextOffset)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3321 | bind(&done); |
| 3322 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3323 | JumpToHandlerEntry(); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3324 | } |
| 3325 | |
| 3326 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3327 | void MacroAssembler::ThrowUncatchable(Register value) { |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3328 | // Adjust this code if not the case. |
Ben Murdoch | 69a99ed | 2011-11-30 16:03:39 +0000 | [diff] [blame] | 3329 | STATIC_ASSERT(StackHandlerConstants::kSize == 5 * kPointerSize); |
| 3330 | STATIC_ASSERT(StackHandlerConstants::kNextOffset == 0 * kPointerSize); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3331 | STATIC_ASSERT(StackHandlerConstants::kCodeOffset == 1 * kPointerSize); |
| 3332 | STATIC_ASSERT(StackHandlerConstants::kStateOffset == 2 * kPointerSize); |
| 3333 | STATIC_ASSERT(StackHandlerConstants::kContextOffset == 3 * kPointerSize); |
| 3334 | STATIC_ASSERT(StackHandlerConstants::kFPOffset == 4 * kPointerSize); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3335 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3336 | // The exception is expected in v0. |
| 3337 | if (!value.is(v0)) { |
| 3338 | mov(v0, value); |
| 3339 | } |
| 3340 | // Drop the stack pointer to the top of the top stack handler. |
Ben Murdoch | 592a9fc | 2012-03-05 11:04:45 +0000 | [diff] [blame] | 3341 | li(a3, Operand(ExternalReference(Isolate::kHandlerAddress, isolate()))); |
| 3342 | lw(sp, MemOperand(a3)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3343 | |
Ben Murdoch | 592a9fc | 2012-03-05 11:04:45 +0000 | [diff] [blame] | 3344 | // Unwind the handlers until the ENTRY handler is found. |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3345 | Label fetch_next, check_kind; |
| 3346 | jmp(&check_kind); |
| 3347 | bind(&fetch_next); |
| 3348 | lw(sp, MemOperand(sp, StackHandlerConstants::kNextOffset)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3349 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3350 | bind(&check_kind); |
| 3351 | STATIC_ASSERT(StackHandler::JS_ENTRY == 0); |
| 3352 | lw(a2, MemOperand(sp, StackHandlerConstants::kStateOffset)); |
| 3353 | And(a2, a2, Operand(StackHandler::KindField::kMask)); |
| 3354 | Branch(&fetch_next, ne, a2, Operand(zero_reg)); |
| 3355 | |
| 3356 | // Set the top handler address to next handler past the top ENTRY handler. |
Ben Murdoch | 592a9fc | 2012-03-05 11:04:45 +0000 | [diff] [blame] | 3357 | pop(a2); |
| 3358 | sw(a2, MemOperand(a3)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3359 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3360 | // Get the code object (a1) and state (a2). Clear the context and frame |
| 3361 | // pointer (0 was saved in the handler). |
| 3362 | MultiPop(a1.bit() | a2.bit() | cp.bit() | fp.bit()); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3363 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3364 | JumpToHandlerEntry(); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3365 | } |
| 3366 | |
| 3367 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3368 | void MacroAssembler::Allocate(int object_size, |
| 3369 | Register result, |
| 3370 | Register scratch1, |
| 3371 | Register scratch2, |
| 3372 | Label* gc_required, |
| 3373 | AllocationFlags flags) { |
| 3374 | DCHECK(object_size <= Page::kMaxRegularHeapObjectSize); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3375 | if (!FLAG_inline_new) { |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3376 | if (emit_debug_code()) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3377 | // Trash the registers to simulate an allocation failure. |
| 3378 | li(result, 0x7091); |
| 3379 | li(scratch1, 0x7191); |
| 3380 | li(scratch2, 0x7291); |
| 3381 | } |
| 3382 | jmp(gc_required); |
| 3383 | return; |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 3384 | } |
| 3385 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3386 | DCHECK(!result.is(scratch1)); |
| 3387 | DCHECK(!result.is(scratch2)); |
| 3388 | DCHECK(!scratch1.is(scratch2)); |
| 3389 | DCHECK(!scratch1.is(t9)); |
| 3390 | DCHECK(!scratch2.is(t9)); |
| 3391 | DCHECK(!result.is(t9)); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 3392 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3393 | // Make object size into bytes. |
| 3394 | if ((flags & SIZE_IN_WORDS) != 0) { |
| 3395 | object_size *= kPointerSize; |
| 3396 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3397 | DCHECK_EQ(0, object_size & kObjectAlignmentMask); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 3398 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3399 | // Check relative positions of allocation top and limit addresses. |
| 3400 | // ARM adds additional checks to make sure the ldm instruction can be |
| 3401 | // 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] | 3402 | ExternalReference allocation_top = |
| 3403 | AllocationUtils::GetAllocationTopReference(isolate(), flags); |
| 3404 | ExternalReference allocation_limit = |
| 3405 | AllocationUtils::GetAllocationLimitReference(isolate(), flags); |
| 3406 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3407 | intptr_t top = |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3408 | reinterpret_cast<intptr_t>(allocation_top.address()); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3409 | intptr_t limit = |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3410 | reinterpret_cast<intptr_t>(allocation_limit.address()); |
| 3411 | DCHECK((limit - top) == kPointerSize); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3412 | |
| 3413 | // Set up allocation top address and object size registers. |
| 3414 | Register topaddr = scratch1; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3415 | li(topaddr, Operand(allocation_top)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3416 | |
| 3417 | // This code stores a temporary value in t9. |
| 3418 | if ((flags & RESULT_CONTAINS_TOP) == 0) { |
| 3419 | // Load allocation top into result and allocation limit into t9. |
| 3420 | lw(result, MemOperand(topaddr)); |
| 3421 | lw(t9, MemOperand(topaddr, kPointerSize)); |
| 3422 | } else { |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3423 | if (emit_debug_code()) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3424 | // Assert that result actually contains top on entry. t9 is used |
| 3425 | // immediately below so this use of t9 does not cause difference with |
| 3426 | // respect to register content between debug and release mode. |
| 3427 | lw(t9, MemOperand(topaddr)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3428 | Check(eq, kUnexpectedAllocationTop, result, Operand(t9)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3429 | } |
| 3430 | // Load allocation limit into t9. Result already contains allocation top. |
| 3431 | lw(t9, MemOperand(topaddr, limit - top)); |
| 3432 | } |
| 3433 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3434 | if ((flags & DOUBLE_ALIGNMENT) != 0) { |
| 3435 | // Align the next allocation. Storing the filler map without checking top is |
| 3436 | // safe in new-space because the limit of the heap is aligned there. |
| 3437 | DCHECK((flags & PRETENURE_OLD_POINTER_SPACE) == 0); |
| 3438 | DCHECK(kPointerAlignment * 2 == kDoubleAlignment); |
| 3439 | And(scratch2, result, Operand(kDoubleAlignmentMask)); |
| 3440 | Label aligned; |
| 3441 | Branch(&aligned, eq, scratch2, Operand(zero_reg)); |
| 3442 | if ((flags & PRETENURE_OLD_DATA_SPACE) != 0) { |
| 3443 | Branch(gc_required, Ugreater_equal, result, Operand(t9)); |
| 3444 | } |
| 3445 | li(scratch2, Operand(isolate()->factory()->one_pointer_filler_map())); |
| 3446 | sw(scratch2, MemOperand(result)); |
| 3447 | Addu(result, result, Operand(kDoubleSize / 2)); |
| 3448 | bind(&aligned); |
| 3449 | } |
| 3450 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3451 | // Calculate new top and bail out if new space is exhausted. Use result |
| 3452 | // to calculate the new top. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3453 | Addu(scratch2, result, Operand(object_size)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3454 | Branch(gc_required, Ugreater, scratch2, Operand(t9)); |
| 3455 | sw(scratch2, MemOperand(topaddr)); |
| 3456 | |
| 3457 | // Tag object if requested. |
| 3458 | if ((flags & TAG_OBJECT) != 0) { |
| 3459 | Addu(result, result, Operand(kHeapObjectTag)); |
| 3460 | } |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 3461 | } |
| 3462 | |
| 3463 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3464 | void MacroAssembler::Allocate(Register object_size, |
| 3465 | Register result, |
| 3466 | Register scratch1, |
| 3467 | Register scratch2, |
| 3468 | Label* gc_required, |
| 3469 | AllocationFlags flags) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3470 | if (!FLAG_inline_new) { |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3471 | if (emit_debug_code()) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3472 | // Trash the registers to simulate an allocation failure. |
| 3473 | li(result, 0x7091); |
| 3474 | li(scratch1, 0x7191); |
| 3475 | li(scratch2, 0x7291); |
| 3476 | } |
| 3477 | jmp(gc_required); |
| 3478 | return; |
| 3479 | } |
| 3480 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3481 | DCHECK(!result.is(scratch1)); |
| 3482 | DCHECK(!result.is(scratch2)); |
| 3483 | DCHECK(!scratch1.is(scratch2)); |
| 3484 | DCHECK(!object_size.is(t9)); |
| 3485 | DCHECK(!scratch1.is(t9) && !scratch2.is(t9) && !result.is(t9)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3486 | |
| 3487 | // Check relative positions of allocation top and limit addresses. |
| 3488 | // ARM adds additional checks to make sure the ldm instruction can be |
| 3489 | // 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] | 3490 | ExternalReference allocation_top = |
| 3491 | AllocationUtils::GetAllocationTopReference(isolate(), flags); |
| 3492 | ExternalReference allocation_limit = |
| 3493 | AllocationUtils::GetAllocationLimitReference(isolate(), flags); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3494 | intptr_t top = |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3495 | reinterpret_cast<intptr_t>(allocation_top.address()); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3496 | intptr_t limit = |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3497 | reinterpret_cast<intptr_t>(allocation_limit.address()); |
| 3498 | DCHECK((limit - top) == kPointerSize); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3499 | |
| 3500 | // Set up allocation top address and object size registers. |
| 3501 | Register topaddr = scratch1; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3502 | li(topaddr, Operand(allocation_top)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3503 | |
| 3504 | // This code stores a temporary value in t9. |
| 3505 | if ((flags & RESULT_CONTAINS_TOP) == 0) { |
| 3506 | // Load allocation top into result and allocation limit into t9. |
| 3507 | lw(result, MemOperand(topaddr)); |
| 3508 | lw(t9, MemOperand(topaddr, kPointerSize)); |
| 3509 | } else { |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3510 | if (emit_debug_code()) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3511 | // Assert that result actually contains top on entry. t9 is used |
| 3512 | // immediately below so this use of t9 does not cause difference with |
| 3513 | // respect to register content between debug and release mode. |
| 3514 | lw(t9, MemOperand(topaddr)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3515 | Check(eq, kUnexpectedAllocationTop, result, Operand(t9)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3516 | } |
| 3517 | // Load allocation limit into t9. Result already contains allocation top. |
| 3518 | lw(t9, MemOperand(topaddr, limit - top)); |
| 3519 | } |
| 3520 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3521 | if ((flags & DOUBLE_ALIGNMENT) != 0) { |
| 3522 | // Align the next allocation. Storing the filler map without checking top is |
| 3523 | // safe in new-space because the limit of the heap is aligned there. |
| 3524 | DCHECK((flags & PRETENURE_OLD_POINTER_SPACE) == 0); |
| 3525 | DCHECK(kPointerAlignment * 2 == kDoubleAlignment); |
| 3526 | And(scratch2, result, Operand(kDoubleAlignmentMask)); |
| 3527 | Label aligned; |
| 3528 | Branch(&aligned, eq, scratch2, Operand(zero_reg)); |
| 3529 | if ((flags & PRETENURE_OLD_DATA_SPACE) != 0) { |
| 3530 | Branch(gc_required, Ugreater_equal, result, Operand(t9)); |
| 3531 | } |
| 3532 | li(scratch2, Operand(isolate()->factory()->one_pointer_filler_map())); |
| 3533 | sw(scratch2, MemOperand(result)); |
| 3534 | Addu(result, result, Operand(kDoubleSize / 2)); |
| 3535 | bind(&aligned); |
| 3536 | } |
| 3537 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3538 | // Calculate new top and bail out if new space is exhausted. Use result |
| 3539 | // to calculate the new top. Object size may be in words so a shift is |
| 3540 | // required to get the number of bytes. |
| 3541 | if ((flags & SIZE_IN_WORDS) != 0) { |
| 3542 | sll(scratch2, object_size, kPointerSizeLog2); |
| 3543 | Addu(scratch2, result, scratch2); |
| 3544 | } else { |
| 3545 | Addu(scratch2, result, Operand(object_size)); |
| 3546 | } |
| 3547 | Branch(gc_required, Ugreater, scratch2, Operand(t9)); |
| 3548 | |
| 3549 | // Update allocation top. result temporarily holds the new top. |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3550 | if (emit_debug_code()) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3551 | And(t9, scratch2, Operand(kObjectAlignmentMask)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3552 | Check(eq, kUnalignedAllocationInNewSpace, t9, Operand(zero_reg)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3553 | } |
| 3554 | sw(scratch2, MemOperand(topaddr)); |
| 3555 | |
| 3556 | // Tag object if requested. |
| 3557 | if ((flags & TAG_OBJECT) != 0) { |
| 3558 | Addu(result, result, Operand(kHeapObjectTag)); |
| 3559 | } |
| 3560 | } |
| 3561 | |
| 3562 | |
| 3563 | void MacroAssembler::UndoAllocationInNewSpace(Register object, |
| 3564 | Register scratch) { |
| 3565 | ExternalReference new_space_allocation_top = |
| 3566 | ExternalReference::new_space_allocation_top_address(isolate()); |
| 3567 | |
| 3568 | // Make sure the object has no tag before resetting top. |
| 3569 | And(object, object, Operand(~kHeapObjectTagMask)); |
| 3570 | #ifdef DEBUG |
| 3571 | // Check that the object un-allocated is below the current top. |
| 3572 | li(scratch, Operand(new_space_allocation_top)); |
| 3573 | lw(scratch, MemOperand(scratch)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3574 | Check(less, kUndoAllocationOfNonAllocatedMemory, |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3575 | object, Operand(scratch)); |
| 3576 | #endif |
| 3577 | // Write the address of the object to un-allocate as the current top. |
| 3578 | li(scratch, Operand(new_space_allocation_top)); |
| 3579 | sw(object, MemOperand(scratch)); |
| 3580 | } |
| 3581 | |
| 3582 | |
| 3583 | void MacroAssembler::AllocateTwoByteString(Register result, |
| 3584 | Register length, |
| 3585 | Register scratch1, |
| 3586 | Register scratch2, |
| 3587 | Register scratch3, |
| 3588 | Label* gc_required) { |
| 3589 | // Calculate the number of bytes needed for the characters in the string while |
| 3590 | // observing object alignment. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3591 | DCHECK((SeqTwoByteString::kHeaderSize & kObjectAlignmentMask) == 0); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3592 | sll(scratch1, length, 1); // Length in bytes, not chars. |
| 3593 | addiu(scratch1, scratch1, |
| 3594 | kObjectAlignmentMask + SeqTwoByteString::kHeaderSize); |
| 3595 | And(scratch1, scratch1, Operand(~kObjectAlignmentMask)); |
| 3596 | |
| 3597 | // Allocate two-byte string in new space. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3598 | Allocate(scratch1, |
| 3599 | result, |
| 3600 | scratch2, |
| 3601 | scratch3, |
| 3602 | gc_required, |
| 3603 | TAG_OBJECT); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3604 | |
| 3605 | // Set the map, length and hash field. |
| 3606 | InitializeNewString(result, |
| 3607 | length, |
| 3608 | Heap::kStringMapRootIndex, |
| 3609 | scratch1, |
| 3610 | scratch2); |
| 3611 | } |
| 3612 | |
| 3613 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3614 | void MacroAssembler::AllocateOneByteString(Register result, Register length, |
| 3615 | Register scratch1, Register scratch2, |
| 3616 | Register scratch3, |
| 3617 | Label* gc_required) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3618 | // Calculate the number of bytes needed for the characters in the string |
| 3619 | // while observing object alignment. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3620 | DCHECK((SeqOneByteString::kHeaderSize & kObjectAlignmentMask) == 0); |
| 3621 | DCHECK(kCharSize == 1); |
| 3622 | addiu(scratch1, length, kObjectAlignmentMask + SeqOneByteString::kHeaderSize); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3623 | And(scratch1, scratch1, Operand(~kObjectAlignmentMask)); |
| 3624 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3625 | // Allocate one-byte string in new space. |
| 3626 | Allocate(scratch1, |
| 3627 | result, |
| 3628 | scratch2, |
| 3629 | scratch3, |
| 3630 | gc_required, |
| 3631 | TAG_OBJECT); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3632 | |
| 3633 | // Set the map, length and hash field. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3634 | InitializeNewString(result, length, Heap::kOneByteStringMapRootIndex, |
| 3635 | scratch1, scratch2); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3636 | } |
| 3637 | |
| 3638 | |
| 3639 | void MacroAssembler::AllocateTwoByteConsString(Register result, |
| 3640 | Register length, |
| 3641 | Register scratch1, |
| 3642 | Register scratch2, |
| 3643 | Label* gc_required) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3644 | Allocate(ConsString::kSize, result, scratch1, scratch2, gc_required, |
| 3645 | TAG_OBJECT); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3646 | InitializeNewString(result, |
| 3647 | length, |
| 3648 | Heap::kConsStringMapRootIndex, |
| 3649 | scratch1, |
| 3650 | scratch2); |
| 3651 | } |
| 3652 | |
| 3653 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3654 | void MacroAssembler::AllocateOneByteConsString(Register result, Register length, |
| 3655 | Register scratch1, |
| 3656 | Register scratch2, |
| 3657 | Label* gc_required) { |
| 3658 | Allocate(ConsString::kSize, |
| 3659 | result, |
| 3660 | scratch1, |
| 3661 | scratch2, |
| 3662 | gc_required, |
| 3663 | TAG_OBJECT); |
| 3664 | |
| 3665 | InitializeNewString(result, length, Heap::kConsOneByteStringMapRootIndex, |
| 3666 | scratch1, scratch2); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3667 | } |
| 3668 | |
| 3669 | |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 3670 | void MacroAssembler::AllocateTwoByteSlicedString(Register result, |
| 3671 | Register length, |
| 3672 | Register scratch1, |
| 3673 | Register scratch2, |
| 3674 | Label* gc_required) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3675 | Allocate(SlicedString::kSize, result, scratch1, scratch2, gc_required, |
| 3676 | TAG_OBJECT); |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 3677 | |
| 3678 | InitializeNewString(result, |
| 3679 | length, |
| 3680 | Heap::kSlicedStringMapRootIndex, |
| 3681 | scratch1, |
| 3682 | scratch2); |
| 3683 | } |
| 3684 | |
| 3685 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3686 | void MacroAssembler::AllocateOneByteSlicedString(Register result, |
| 3687 | Register length, |
| 3688 | Register scratch1, |
| 3689 | Register scratch2, |
| 3690 | Label* gc_required) { |
| 3691 | Allocate(SlicedString::kSize, result, scratch1, scratch2, gc_required, |
| 3692 | TAG_OBJECT); |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 3693 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3694 | InitializeNewString(result, length, Heap::kSlicedOneByteStringMapRootIndex, |
| 3695 | scratch1, scratch2); |
| 3696 | } |
| 3697 | |
| 3698 | |
| 3699 | void MacroAssembler::JumpIfNotUniqueNameInstanceType(Register reg, |
| 3700 | Label* not_unique_name) { |
| 3701 | STATIC_ASSERT(kInternalizedTag == 0 && kStringTag == 0); |
| 3702 | Label succeed; |
| 3703 | And(at, reg, Operand(kIsNotStringMask | kIsNotInternalizedMask)); |
| 3704 | Branch(&succeed, eq, at, Operand(zero_reg)); |
| 3705 | Branch(not_unique_name, ne, reg, Operand(SYMBOL_TYPE)); |
| 3706 | |
| 3707 | bind(&succeed); |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 3708 | } |
| 3709 | |
| 3710 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3711 | // Allocates a heap number or jumps to the label if the young space is full and |
| 3712 | // a scavenge is needed. |
| 3713 | void MacroAssembler::AllocateHeapNumber(Register result, |
| 3714 | Register scratch1, |
| 3715 | Register scratch2, |
| 3716 | Register heap_number_map, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3717 | Label* need_gc, |
| 3718 | TaggingMode tagging_mode, |
| 3719 | MutableMode mode) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3720 | // Allocate an object in the heap for the heap number and tag it as a heap |
| 3721 | // object. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3722 | Allocate(HeapNumber::kSize, result, scratch1, scratch2, need_gc, |
| 3723 | tagging_mode == TAG_RESULT ? TAG_OBJECT : NO_ALLOCATION_FLAGS); |
| 3724 | |
| 3725 | Heap::RootListIndex map_index = mode == MUTABLE |
| 3726 | ? Heap::kMutableHeapNumberMapRootIndex |
| 3727 | : Heap::kHeapNumberMapRootIndex; |
| 3728 | AssertIsRoot(heap_number_map, map_index); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3729 | |
| 3730 | // Store heap number map in the allocated object. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3731 | if (tagging_mode == TAG_RESULT) { |
| 3732 | sw(heap_number_map, FieldMemOperand(result, HeapObject::kMapOffset)); |
| 3733 | } else { |
| 3734 | sw(heap_number_map, MemOperand(result, HeapObject::kMapOffset)); |
| 3735 | } |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3736 | } |
| 3737 | |
| 3738 | |
| 3739 | void MacroAssembler::AllocateHeapNumberWithValue(Register result, |
| 3740 | FPURegister value, |
| 3741 | Register scratch1, |
| 3742 | Register scratch2, |
| 3743 | Label* gc_required) { |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 3744 | LoadRoot(t8, Heap::kHeapNumberMapRootIndex); |
| 3745 | AllocateHeapNumber(result, scratch1, scratch2, t8, gc_required); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3746 | sdc1(value, FieldMemOperand(result, HeapNumber::kValueOffset)); |
| 3747 | } |
| 3748 | |
| 3749 | |
| 3750 | // Copies a fixed number of fields of heap objects from src to dst. |
| 3751 | void MacroAssembler::CopyFields(Register dst, |
| 3752 | Register src, |
| 3753 | RegList temps, |
| 3754 | int field_count) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3755 | DCHECK((temps & dst.bit()) == 0); |
| 3756 | DCHECK((temps & src.bit()) == 0); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3757 | // Primitive implementation using only one temporary register. |
| 3758 | |
| 3759 | Register tmp = no_reg; |
| 3760 | // Find a temp register in temps list. |
| 3761 | for (int i = 0; i < kNumRegisters; i++) { |
| 3762 | if ((temps & (1 << i)) != 0) { |
| 3763 | tmp.code_ = i; |
| 3764 | break; |
| 3765 | } |
| 3766 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3767 | DCHECK(!tmp.is(no_reg)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3768 | |
| 3769 | for (int i = 0; i < field_count; i++) { |
| 3770 | lw(tmp, FieldMemOperand(src, i * kPointerSize)); |
| 3771 | sw(tmp, FieldMemOperand(dst, i * kPointerSize)); |
| 3772 | } |
| 3773 | } |
| 3774 | |
| 3775 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3776 | void MacroAssembler::CopyBytes(Register src, |
| 3777 | Register dst, |
| 3778 | Register length, |
| 3779 | Register scratch) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3780 | Label align_loop_1, word_loop, byte_loop, byte_loop_1, done; |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3781 | |
| 3782 | // Align src before copying in word size chunks. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3783 | Branch(&byte_loop, le, length, Operand(kPointerSize)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3784 | bind(&align_loop_1); |
| 3785 | And(scratch, src, kPointerSize - 1); |
| 3786 | Branch(&word_loop, eq, scratch, Operand(zero_reg)); |
| 3787 | lbu(scratch, MemOperand(src)); |
| 3788 | Addu(src, src, 1); |
| 3789 | sb(scratch, MemOperand(dst)); |
| 3790 | Addu(dst, dst, 1); |
| 3791 | Subu(length, length, Operand(1)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3792 | Branch(&align_loop_1, ne, length, Operand(zero_reg)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3793 | |
| 3794 | // Copy bytes in word size chunks. |
| 3795 | bind(&word_loop); |
| 3796 | if (emit_debug_code()) { |
| 3797 | And(scratch, src, kPointerSize - 1); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3798 | Assert(eq, kExpectingAlignmentForCopyBytes, |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3799 | scratch, Operand(zero_reg)); |
| 3800 | } |
| 3801 | Branch(&byte_loop, lt, length, Operand(kPointerSize)); |
| 3802 | lw(scratch, MemOperand(src)); |
| 3803 | Addu(src, src, kPointerSize); |
| 3804 | |
| 3805 | // TODO(kalmard) check if this can be optimized to use sw in most cases. |
| 3806 | // Can't use unaligned access - copy byte by byte. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3807 | if (kArchEndian == kLittle) { |
| 3808 | sb(scratch, MemOperand(dst, 0)); |
| 3809 | srl(scratch, scratch, 8); |
| 3810 | sb(scratch, MemOperand(dst, 1)); |
| 3811 | srl(scratch, scratch, 8); |
| 3812 | sb(scratch, MemOperand(dst, 2)); |
| 3813 | srl(scratch, scratch, 8); |
| 3814 | sb(scratch, MemOperand(dst, 3)); |
| 3815 | } else { |
| 3816 | sb(scratch, MemOperand(dst, 3)); |
| 3817 | srl(scratch, scratch, 8); |
| 3818 | sb(scratch, MemOperand(dst, 2)); |
| 3819 | srl(scratch, scratch, 8); |
| 3820 | sb(scratch, MemOperand(dst, 1)); |
| 3821 | srl(scratch, scratch, 8); |
| 3822 | sb(scratch, MemOperand(dst, 0)); |
| 3823 | } |
| 3824 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3825 | Addu(dst, dst, 4); |
| 3826 | |
| 3827 | Subu(length, length, Operand(kPointerSize)); |
| 3828 | Branch(&word_loop); |
| 3829 | |
| 3830 | // Copy the last bytes if any left. |
| 3831 | bind(&byte_loop); |
| 3832 | Branch(&done, eq, length, Operand(zero_reg)); |
| 3833 | bind(&byte_loop_1); |
| 3834 | lbu(scratch, MemOperand(src)); |
| 3835 | Addu(src, src, 1); |
| 3836 | sb(scratch, MemOperand(dst)); |
| 3837 | Addu(dst, dst, 1); |
| 3838 | Subu(length, length, Operand(1)); |
| 3839 | Branch(&byte_loop_1, ne, length, Operand(zero_reg)); |
| 3840 | bind(&done); |
| 3841 | } |
| 3842 | |
| 3843 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3844 | void MacroAssembler::InitializeFieldsWithFiller(Register start_offset, |
| 3845 | Register end_offset, |
| 3846 | Register filler) { |
| 3847 | Label loop, entry; |
| 3848 | Branch(&entry); |
| 3849 | bind(&loop); |
| 3850 | sw(filler, MemOperand(start_offset)); |
| 3851 | Addu(start_offset, start_offset, kPointerSize); |
| 3852 | bind(&entry); |
| 3853 | Branch(&loop, lt, start_offset, Operand(end_offset)); |
| 3854 | } |
| 3855 | |
| 3856 | |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 3857 | void MacroAssembler::CheckFastElements(Register map, |
| 3858 | Register scratch, |
| 3859 | Label* fail) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3860 | STATIC_ASSERT(FAST_SMI_ELEMENTS == 0); |
| 3861 | STATIC_ASSERT(FAST_HOLEY_SMI_ELEMENTS == 1); |
| 3862 | STATIC_ASSERT(FAST_ELEMENTS == 2); |
| 3863 | STATIC_ASSERT(FAST_HOLEY_ELEMENTS == 3); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 3864 | lbu(scratch, FieldMemOperand(map, Map::kBitField2Offset)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3865 | Branch(fail, hi, scratch, |
| 3866 | Operand(Map::kMaximumBitField2FastHoleyElementValue)); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 3867 | } |
| 3868 | |
| 3869 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3870 | void MacroAssembler::CheckFastObjectElements(Register map, |
| 3871 | Register scratch, |
| 3872 | Label* fail) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3873 | STATIC_ASSERT(FAST_SMI_ELEMENTS == 0); |
| 3874 | STATIC_ASSERT(FAST_HOLEY_SMI_ELEMENTS == 1); |
| 3875 | STATIC_ASSERT(FAST_ELEMENTS == 2); |
| 3876 | STATIC_ASSERT(FAST_HOLEY_ELEMENTS == 3); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3877 | lbu(scratch, FieldMemOperand(map, Map::kBitField2Offset)); |
| 3878 | Branch(fail, ls, scratch, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3879 | Operand(Map::kMaximumBitField2FastHoleySmiElementValue)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3880 | Branch(fail, hi, scratch, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3881 | Operand(Map::kMaximumBitField2FastHoleyElementValue)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3882 | } |
| 3883 | |
| 3884 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3885 | void MacroAssembler::CheckFastSmiElements(Register map, |
| 3886 | Register scratch, |
| 3887 | Label* fail) { |
| 3888 | STATIC_ASSERT(FAST_SMI_ELEMENTS == 0); |
| 3889 | STATIC_ASSERT(FAST_HOLEY_SMI_ELEMENTS == 1); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3890 | lbu(scratch, FieldMemOperand(map, Map::kBitField2Offset)); |
| 3891 | Branch(fail, hi, scratch, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3892 | Operand(Map::kMaximumBitField2FastHoleySmiElementValue)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3893 | } |
| 3894 | |
| 3895 | |
| 3896 | void MacroAssembler::StoreNumberToDoubleElements(Register value_reg, |
| 3897 | Register key_reg, |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3898 | Register elements_reg, |
| 3899 | Register scratch1, |
| 3900 | Register scratch2, |
| 3901 | Register scratch3, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3902 | Label* fail, |
| 3903 | int elements_offset) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3904 | Label smi_value, maybe_nan, have_double_value, is_nan, done; |
| 3905 | Register mantissa_reg = scratch2; |
| 3906 | Register exponent_reg = scratch3; |
| 3907 | |
| 3908 | // Handle smi values specially. |
| 3909 | JumpIfSmi(value_reg, &smi_value); |
| 3910 | |
| 3911 | // Ensure that the object is a heap number |
| 3912 | CheckMap(value_reg, |
| 3913 | scratch1, |
| 3914 | Heap::kHeapNumberMapRootIndex, |
| 3915 | fail, |
| 3916 | DONT_DO_SMI_CHECK); |
| 3917 | |
| 3918 | // Check for nan: all NaN values have a value greater (signed) than 0x7ff00000 |
| 3919 | // in the exponent. |
| 3920 | li(scratch1, Operand(kNaNOrInfinityLowerBoundUpper32)); |
| 3921 | lw(exponent_reg, FieldMemOperand(value_reg, HeapNumber::kExponentOffset)); |
| 3922 | Branch(&maybe_nan, ge, exponent_reg, Operand(scratch1)); |
| 3923 | |
| 3924 | lw(mantissa_reg, FieldMemOperand(value_reg, HeapNumber::kMantissaOffset)); |
| 3925 | |
| 3926 | bind(&have_double_value); |
| 3927 | sll(scratch1, key_reg, kDoubleSizeLog2 - kSmiTagSize); |
| 3928 | Addu(scratch1, scratch1, elements_reg); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3929 | sw(mantissa_reg, |
| 3930 | FieldMemOperand(scratch1, FixedDoubleArray::kHeaderSize - elements_offset |
| 3931 | + kHoleNanLower32Offset)); |
| 3932 | sw(exponent_reg, |
| 3933 | FieldMemOperand(scratch1, FixedDoubleArray::kHeaderSize - elements_offset |
| 3934 | + kHoleNanUpper32Offset)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3935 | jmp(&done); |
| 3936 | |
| 3937 | bind(&maybe_nan); |
| 3938 | // Could be NaN or Infinity. If fraction is not zero, it's NaN, otherwise |
| 3939 | // it's an Infinity, and the non-NaN code path applies. |
| 3940 | Branch(&is_nan, gt, exponent_reg, Operand(scratch1)); |
| 3941 | lw(mantissa_reg, FieldMemOperand(value_reg, HeapNumber::kMantissaOffset)); |
| 3942 | Branch(&have_double_value, eq, mantissa_reg, Operand(zero_reg)); |
| 3943 | bind(&is_nan); |
| 3944 | // Load canonical NaN for storing into the double array. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3945 | LoadRoot(at, Heap::kNanValueRootIndex); |
| 3946 | lw(mantissa_reg, FieldMemOperand(at, HeapNumber::kMantissaOffset)); |
| 3947 | lw(exponent_reg, FieldMemOperand(at, HeapNumber::kExponentOffset)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3948 | jmp(&have_double_value); |
| 3949 | |
| 3950 | bind(&smi_value); |
| 3951 | Addu(scratch1, elements_reg, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3952 | Operand(FixedDoubleArray::kHeaderSize - kHeapObjectTag - |
| 3953 | elements_offset)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3954 | sll(scratch2, key_reg, kDoubleSizeLog2 - kSmiTagSize); |
| 3955 | Addu(scratch1, scratch1, scratch2); |
| 3956 | // scratch1 is now effective address of the double element |
| 3957 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3958 | Register untagged_value = elements_reg; |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3959 | SmiUntag(untagged_value, value_reg); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3960 | mtc1(untagged_value, f2); |
| 3961 | cvt_d_w(f0, f2); |
| 3962 | sdc1(f0, MemOperand(scratch1, 0)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3963 | bind(&done); |
| 3964 | } |
| 3965 | |
| 3966 | |
| 3967 | void MacroAssembler::CompareMapAndBranch(Register obj, |
| 3968 | Register scratch, |
| 3969 | Handle<Map> map, |
| 3970 | Label* early_success, |
| 3971 | Condition cond, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3972 | Label* branch_to) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3973 | lw(scratch, FieldMemOperand(obj, HeapObject::kMapOffset)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3974 | CompareMapAndBranch(scratch, map, early_success, cond, branch_to); |
| 3975 | } |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3976 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3977 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3978 | void MacroAssembler::CompareMapAndBranch(Register obj_map, |
| 3979 | Handle<Map> map, |
| 3980 | Label* early_success, |
| 3981 | Condition cond, |
| 3982 | Label* branch_to) { |
| 3983 | Branch(branch_to, cond, obj_map, Operand(map)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3984 | } |
| 3985 | |
| 3986 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3987 | void MacroAssembler::CheckMap(Register obj, |
| 3988 | Register scratch, |
| 3989 | Handle<Map> map, |
| 3990 | Label* fail, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3991 | SmiCheckType smi_check_type) { |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3992 | if (smi_check_type == DO_SMI_CHECK) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3993 | JumpIfSmi(obj, fail); |
| 3994 | } |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3995 | Label success; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3996 | CompareMapAndBranch(obj, scratch, map, &success, ne, fail); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3997 | bind(&success); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3998 | } |
| 3999 | |
| 4000 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame^] | 4001 | void MacroAssembler::DispatchWeakMap(Register obj, Register scratch1, |
| 4002 | Register scratch2, Handle<WeakCell> cell, |
| 4003 | Handle<Code> success, |
| 4004 | SmiCheckType smi_check_type) { |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4005 | Label fail; |
| 4006 | if (smi_check_type == DO_SMI_CHECK) { |
| 4007 | JumpIfSmi(obj, &fail); |
| 4008 | } |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame^] | 4009 | lw(scratch1, FieldMemOperand(obj, HeapObject::kMapOffset)); |
| 4010 | GetWeakValue(scratch2, cell); |
| 4011 | Jump(success, RelocInfo::CODE_TARGET, eq, scratch1, Operand(scratch2)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4012 | bind(&fail); |
| 4013 | } |
| 4014 | |
| 4015 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4016 | void MacroAssembler::CheckMap(Register obj, |
| 4017 | Register scratch, |
| 4018 | Heap::RootListIndex index, |
| 4019 | Label* fail, |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4020 | SmiCheckType smi_check_type) { |
| 4021 | if (smi_check_type == DO_SMI_CHECK) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4022 | JumpIfSmi(obj, fail); |
| 4023 | } |
| 4024 | lw(scratch, FieldMemOperand(obj, HeapObject::kMapOffset)); |
| 4025 | LoadRoot(at, index); |
| 4026 | Branch(fail, ne, scratch, Operand(at)); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 4027 | } |
| 4028 | |
| 4029 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame^] | 4030 | void MacroAssembler::GetWeakValue(Register value, Handle<WeakCell> cell) { |
| 4031 | li(value, Operand(cell)); |
| 4032 | lw(value, FieldMemOperand(value, WeakCell::kValueOffset)); |
| 4033 | } |
| 4034 | |
| 4035 | |
| 4036 | void MacroAssembler::LoadWeakValue(Register value, Handle<WeakCell> cell, |
| 4037 | Label* miss) { |
| 4038 | GetWeakValue(value, cell); |
| 4039 | JumpIfSmi(value, miss); |
| 4040 | } |
| 4041 | |
| 4042 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4043 | void MacroAssembler::MovFromFloatResult(DoubleRegister dst) { |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4044 | if (IsMipsSoftFloatABI) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4045 | if (kArchEndian == kLittle) { |
| 4046 | Move(dst, v0, v1); |
| 4047 | } else { |
| 4048 | Move(dst, v1, v0); |
| 4049 | } |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4050 | } else { |
| 4051 | Move(dst, f0); // Reg f0 is o32 ABI FP return value. |
| 4052 | } |
| 4053 | } |
| 4054 | |
| 4055 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4056 | void MacroAssembler::MovFromFloatParameter(DoubleRegister dst) { |
| 4057 | if (IsMipsSoftFloatABI) { |
| 4058 | if (kArchEndian == kLittle) { |
| 4059 | Move(dst, a0, a1); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4060 | } else { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4061 | Move(dst, a1, a0); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4062 | } |
| 4063 | } else { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4064 | Move(dst, f12); // Reg f12 is o32 ABI FP first argument value. |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4065 | } |
| 4066 | } |
| 4067 | |
| 4068 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4069 | void MacroAssembler::MovToFloatParameter(DoubleRegister src) { |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4070 | if (!IsMipsSoftFloatABI) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4071 | Move(f12, src); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4072 | } else { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4073 | if (kArchEndian == kLittle) { |
| 4074 | Move(a0, a1, src); |
| 4075 | } else { |
| 4076 | Move(a1, a0, src); |
| 4077 | } |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4078 | } |
| 4079 | } |
| 4080 | |
| 4081 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4082 | void MacroAssembler::MovToFloatResult(DoubleRegister src) { |
| 4083 | if (!IsMipsSoftFloatABI) { |
| 4084 | Move(f0, src); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4085 | } else { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4086 | if (kArchEndian == kLittle) { |
| 4087 | Move(v0, v1, src); |
| 4088 | } else { |
| 4089 | Move(v1, v0, src); |
| 4090 | } |
| 4091 | } |
| 4092 | } |
| 4093 | |
| 4094 | |
| 4095 | void MacroAssembler::MovToFloatParameters(DoubleRegister src1, |
| 4096 | DoubleRegister src2) { |
| 4097 | if (!IsMipsSoftFloatABI) { |
| 4098 | if (src2.is(f12)) { |
| 4099 | DCHECK(!src1.is(f14)); |
| 4100 | Move(f14, src2); |
| 4101 | Move(f12, src1); |
| 4102 | } else { |
| 4103 | Move(f12, src1); |
| 4104 | Move(f14, src2); |
| 4105 | } |
| 4106 | } else { |
| 4107 | if (kArchEndian == kLittle) { |
| 4108 | Move(a0, a1, src1); |
| 4109 | Move(a2, a3, src2); |
| 4110 | } else { |
| 4111 | Move(a1, a0, src1); |
| 4112 | Move(a3, a2, src2); |
| 4113 | } |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4114 | } |
| 4115 | } |
| 4116 | |
| 4117 | |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 4118 | // ----------------------------------------------------------------------------- |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4119 | // JavaScript invokes. |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 4120 | |
| 4121 | void MacroAssembler::InvokePrologue(const ParameterCount& expected, |
| 4122 | const ParameterCount& actual, |
| 4123 | Handle<Code> code_constant, |
| 4124 | Register code_reg, |
| 4125 | Label* done, |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4126 | bool* definitely_mismatches, |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4127 | InvokeFlag flag, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4128 | const CallWrapper& call_wrapper) { |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 4129 | bool definitely_matches = false; |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4130 | *definitely_mismatches = false; |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 4131 | Label regular_invoke; |
| 4132 | |
| 4133 | // Check whether the expected and actual arguments count match. If not, |
| 4134 | // setup registers according to contract with ArgumentsAdaptorTrampoline: |
| 4135 | // a0: actual arguments count |
| 4136 | // a1: function (passed through to callee) |
| 4137 | // a2: expected arguments count |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 4138 | |
| 4139 | // The code below is made a lot easier because the calling code already sets |
| 4140 | // up actual and expected registers according to the contract if values are |
| 4141 | // passed in registers. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4142 | DCHECK(actual.is_immediate() || actual.reg().is(a0)); |
| 4143 | DCHECK(expected.is_immediate() || expected.reg().is(a2)); |
| 4144 | DCHECK((!code_constant.is_null() && code_reg.is(no_reg)) || code_reg.is(a3)); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 4145 | |
| 4146 | if (expected.is_immediate()) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4147 | DCHECK(actual.is_immediate()); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 4148 | if (expected.immediate() == actual.immediate()) { |
| 4149 | definitely_matches = true; |
| 4150 | } else { |
| 4151 | li(a0, Operand(actual.immediate())); |
| 4152 | const int sentinel = SharedFunctionInfo::kDontAdaptArgumentsSentinel; |
| 4153 | if (expected.immediate() == sentinel) { |
| 4154 | // Don't worry about adapting arguments for builtins that |
| 4155 | // don't want that done. Skip adaption code by making it look |
| 4156 | // like we have a match between expected and actual number of |
| 4157 | // arguments. |
| 4158 | definitely_matches = true; |
| 4159 | } else { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4160 | *definitely_mismatches = true; |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 4161 | li(a2, Operand(expected.immediate())); |
| 4162 | } |
| 4163 | } |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4164 | } else if (actual.is_immediate()) { |
| 4165 | Branch(®ular_invoke, eq, expected.reg(), Operand(actual.immediate())); |
| 4166 | li(a0, Operand(actual.immediate())); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 4167 | } else { |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4168 | Branch(®ular_invoke, eq, expected.reg(), Operand(actual.reg())); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 4169 | } |
| 4170 | |
| 4171 | if (!definitely_matches) { |
| 4172 | if (!code_constant.is_null()) { |
| 4173 | li(a3, Operand(code_constant)); |
| 4174 | addiu(a3, a3, Code::kHeaderSize - kHeapObjectTag); |
| 4175 | } |
| 4176 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4177 | Handle<Code> adaptor = |
| 4178 | isolate()->builtins()->ArgumentsAdaptorTrampoline(); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 4179 | if (flag == CALL_FUNCTION) { |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 4180 | call_wrapper.BeforeCall(CallSize(adaptor)); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 4181 | Call(adaptor); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4182 | call_wrapper.AfterCall(); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4183 | if (!*definitely_mismatches) { |
| 4184 | Branch(done); |
| 4185 | } |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 4186 | } else { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4187 | Jump(adaptor, RelocInfo::CODE_TARGET); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 4188 | } |
| 4189 | bind(®ular_invoke); |
| 4190 | } |
| 4191 | } |
| 4192 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4193 | |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 4194 | void MacroAssembler::InvokeCode(Register code, |
| 4195 | const ParameterCount& expected, |
| 4196 | const ParameterCount& actual, |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4197 | InvokeFlag flag, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4198 | const CallWrapper& call_wrapper) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4199 | // You can't call a function without a valid frame. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4200 | DCHECK(flag == JUMP_FUNCTION || has_frame()); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4201 | |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 4202 | Label done; |
| 4203 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4204 | bool definitely_mismatches = false; |
| 4205 | InvokePrologue(expected, actual, Handle<Code>::null(), code, |
| 4206 | &done, &definitely_mismatches, flag, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4207 | call_wrapper); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4208 | if (!definitely_mismatches) { |
| 4209 | if (flag == CALL_FUNCTION) { |
| 4210 | call_wrapper.BeforeCall(CallSize(code)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4211 | Call(code); |
| 4212 | call_wrapper.AfterCall(); |
| 4213 | } else { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4214 | DCHECK(flag == JUMP_FUNCTION); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4215 | Jump(code); |
| 4216 | } |
| 4217 | // Continue here if InvokePrologue does handle the invocation due to |
| 4218 | // mismatched parameter counts. |
| 4219 | bind(&done); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 4220 | } |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 4221 | } |
| 4222 | |
| 4223 | |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 4224 | void MacroAssembler::InvokeFunction(Register function, |
| 4225 | const ParameterCount& actual, |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4226 | InvokeFlag flag, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4227 | const CallWrapper& call_wrapper) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4228 | // You can't call a function without a valid frame. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4229 | DCHECK(flag == JUMP_FUNCTION || has_frame()); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4230 | |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 4231 | // Contract with called JS functions requires that function is passed in a1. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4232 | DCHECK(function.is(a1)); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 4233 | Register expected_reg = a2; |
| 4234 | Register code_reg = a3; |
| 4235 | |
| 4236 | lw(code_reg, FieldMemOperand(a1, JSFunction::kSharedFunctionInfoOffset)); |
| 4237 | lw(cp, FieldMemOperand(a1, JSFunction::kContextOffset)); |
| 4238 | lw(expected_reg, |
| 4239 | FieldMemOperand(code_reg, |
| 4240 | SharedFunctionInfo::kFormalParameterCountOffset)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4241 | sra(expected_reg, expected_reg, kSmiTagSize); |
| 4242 | lw(code_reg, FieldMemOperand(a1, JSFunction::kCodeEntryOffset)); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 4243 | |
| 4244 | ParameterCount expected(expected_reg); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4245 | InvokeCode(code_reg, expected, actual, flag, call_wrapper); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4246 | } |
| 4247 | |
| 4248 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4249 | void MacroAssembler::InvokeFunction(Register function, |
| 4250 | const ParameterCount& expected, |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4251 | const ParameterCount& actual, |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 4252 | InvokeFlag flag, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4253 | const CallWrapper& call_wrapper) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4254 | // You can't call a function without a valid frame. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4255 | DCHECK(flag == JUMP_FUNCTION || has_frame()); |
| 4256 | |
| 4257 | // Contract with called JS functions requires that function is passed in a1. |
| 4258 | DCHECK(function.is(a1)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4259 | |
| 4260 | // Get the function and setup the context. |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4261 | lw(cp, FieldMemOperand(a1, JSFunction::kContextOffset)); |
| 4262 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4263 | // We call indirectly through the code field in the function to |
| 4264 | // allow recompilation to take effect without changing any of the |
| 4265 | // call sites. |
| 4266 | lw(a3, FieldMemOperand(a1, JSFunction::kCodeEntryOffset)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4267 | InvokeCode(a3, expected, actual, flag, call_wrapper); |
| 4268 | } |
| 4269 | |
| 4270 | |
| 4271 | void MacroAssembler::InvokeFunction(Handle<JSFunction> function, |
| 4272 | const ParameterCount& expected, |
| 4273 | const ParameterCount& actual, |
| 4274 | InvokeFlag flag, |
| 4275 | const CallWrapper& call_wrapper) { |
| 4276 | li(a1, function); |
| 4277 | InvokeFunction(a1, expected, actual, flag, call_wrapper); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4278 | } |
| 4279 | |
| 4280 | |
| 4281 | void MacroAssembler::IsObjectJSObjectType(Register heap_object, |
| 4282 | Register map, |
| 4283 | Register scratch, |
| 4284 | Label* fail) { |
| 4285 | lw(map, FieldMemOperand(heap_object, HeapObject::kMapOffset)); |
| 4286 | IsInstanceJSObjectType(map, scratch, fail); |
| 4287 | } |
| 4288 | |
| 4289 | |
| 4290 | void MacroAssembler::IsInstanceJSObjectType(Register map, |
| 4291 | Register scratch, |
| 4292 | Label* fail) { |
| 4293 | lbu(scratch, FieldMemOperand(map, Map::kInstanceTypeOffset)); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 4294 | Branch(fail, lt, scratch, Operand(FIRST_NONCALLABLE_SPEC_OBJECT_TYPE)); |
| 4295 | Branch(fail, gt, scratch, Operand(LAST_NONCALLABLE_SPEC_OBJECT_TYPE)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4296 | } |
| 4297 | |
| 4298 | |
| 4299 | void MacroAssembler::IsObjectJSStringType(Register object, |
| 4300 | Register scratch, |
| 4301 | Label* fail) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4302 | DCHECK(kNotStringTag != 0); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4303 | |
| 4304 | lw(scratch, FieldMemOperand(object, HeapObject::kMapOffset)); |
| 4305 | lbu(scratch, FieldMemOperand(scratch, Map::kInstanceTypeOffset)); |
| 4306 | And(scratch, scratch, Operand(kIsNotStringMask)); |
| 4307 | Branch(fail, ne, scratch, Operand(zero_reg)); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 4308 | } |
| 4309 | |
| 4310 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4311 | void MacroAssembler::IsObjectNameType(Register object, |
| 4312 | Register scratch, |
| 4313 | Label* fail) { |
| 4314 | lw(scratch, FieldMemOperand(object, HeapObject::kMapOffset)); |
| 4315 | lbu(scratch, FieldMemOperand(scratch, Map::kInstanceTypeOffset)); |
| 4316 | Branch(fail, hi, scratch, Operand(LAST_NAME_TYPE)); |
| 4317 | } |
| 4318 | |
| 4319 | |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 4320 | // --------------------------------------------------------------------------- |
| 4321 | // Support functions. |
| 4322 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4323 | |
| 4324 | void MacroAssembler::TryGetFunctionPrototype(Register function, |
| 4325 | Register result, |
| 4326 | Register scratch, |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4327 | Label* miss, |
| 4328 | bool miss_on_bound_function) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4329 | Label non_instance; |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4330 | if (miss_on_bound_function) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4331 | // Check that the receiver isn't a smi. |
| 4332 | JumpIfSmi(function, miss); |
| 4333 | |
| 4334 | // Check that the function really is a function. Load map into result reg. |
| 4335 | GetObjectType(function, result, scratch); |
| 4336 | Branch(miss, ne, scratch, Operand(JS_FUNCTION_TYPE)); |
| 4337 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4338 | lw(scratch, |
| 4339 | FieldMemOperand(function, JSFunction::kSharedFunctionInfoOffset)); |
| 4340 | lw(scratch, |
| 4341 | FieldMemOperand(scratch, SharedFunctionInfo::kCompilerHintsOffset)); |
| 4342 | And(scratch, scratch, |
| 4343 | Operand(Smi::FromInt(1 << SharedFunctionInfo::kBoundFunction))); |
| 4344 | Branch(miss, ne, scratch, Operand(zero_reg)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4345 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4346 | // Make sure that the function has an instance prototype. |
| 4347 | lbu(scratch, FieldMemOperand(result, Map::kBitFieldOffset)); |
| 4348 | And(scratch, scratch, Operand(1 << Map::kHasNonInstancePrototype)); |
| 4349 | Branch(&non_instance, ne, scratch, Operand(zero_reg)); |
| 4350 | } |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4351 | |
| 4352 | // Get the prototype or initial map from the function. |
| 4353 | lw(result, |
| 4354 | FieldMemOperand(function, JSFunction::kPrototypeOrInitialMapOffset)); |
| 4355 | |
| 4356 | // If the prototype or initial map is the hole, don't return it and |
| 4357 | // simply miss the cache instead. This will allow us to allocate a |
| 4358 | // prototype object on-demand in the runtime system. |
| 4359 | LoadRoot(t8, Heap::kTheHoleValueRootIndex); |
| 4360 | Branch(miss, eq, result, Operand(t8)); |
| 4361 | |
| 4362 | // If the function does not have an initial map, we're done. |
| 4363 | Label done; |
| 4364 | GetObjectType(result, scratch, scratch); |
| 4365 | Branch(&done, ne, scratch, Operand(MAP_TYPE)); |
| 4366 | |
| 4367 | // Get the prototype from the initial map. |
| 4368 | lw(result, FieldMemOperand(result, Map::kPrototypeOffset)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4369 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4370 | if (miss_on_bound_function) { |
| 4371 | jmp(&done); |
| 4372 | |
| 4373 | // Non-instance prototype: Fetch prototype from constructor field |
| 4374 | // in initial map. |
| 4375 | bind(&non_instance); |
| 4376 | lw(result, FieldMemOperand(result, Map::kConstructorOffset)); |
| 4377 | } |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4378 | |
| 4379 | // All done. |
| 4380 | bind(&done); |
| 4381 | } |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 4382 | |
| 4383 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4384 | void MacroAssembler::GetObjectType(Register object, |
| 4385 | Register map, |
| 4386 | Register type_reg) { |
| 4387 | lw(map, FieldMemOperand(object, HeapObject::kMapOffset)); |
| 4388 | lbu(type_reg, FieldMemOperand(map, Map::kInstanceTypeOffset)); |
| 4389 | } |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 4390 | |
| 4391 | |
| 4392 | // ----------------------------------------------------------------------------- |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4393 | // Runtime calls. |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 4394 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4395 | void MacroAssembler::CallStub(CodeStub* stub, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4396 | TypeFeedbackId ast_id, |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4397 | Condition cond, |
| 4398 | Register r1, |
| 4399 | const Operand& r2, |
| 4400 | BranchDelaySlot bd) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4401 | DCHECK(AllowThisStubCall(stub)); // Stub calls are not allowed in some stubs. |
| 4402 | Call(stub->GetCode(), RelocInfo::CODE_TARGET, ast_id, |
| 4403 | cond, r1, r2, bd); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 4404 | } |
| 4405 | |
| 4406 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4407 | void MacroAssembler::TailCallStub(CodeStub* stub, |
| 4408 | Condition cond, |
| 4409 | Register r1, |
| 4410 | const Operand& r2, |
| 4411 | BranchDelaySlot bd) { |
| 4412 | Jump(stub->GetCode(), RelocInfo::CODE_TARGET, cond, r1, r2, bd); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 4413 | } |
| 4414 | |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 4415 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4416 | static int AddressOffset(ExternalReference ref0, ExternalReference ref1) { |
| 4417 | return ref0.address() - ref1.address(); |
| 4418 | } |
| 4419 | |
| 4420 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4421 | void MacroAssembler::CallApiFunctionAndReturn( |
| 4422 | Register function_address, |
| 4423 | ExternalReference thunk_ref, |
| 4424 | int stack_space, |
| 4425 | MemOperand return_value_operand, |
| 4426 | MemOperand* context_restore_operand) { |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4427 | ExternalReference next_address = |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4428 | ExternalReference::handle_scope_next_address(isolate()); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4429 | const int kNextOffset = 0; |
| 4430 | const int kLimitOffset = AddressOffset( |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4431 | ExternalReference::handle_scope_limit_address(isolate()), |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4432 | next_address); |
| 4433 | const int kLevelOffset = AddressOffset( |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4434 | ExternalReference::handle_scope_level_address(isolate()), |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4435 | next_address); |
| 4436 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4437 | DCHECK(function_address.is(a1) || function_address.is(a2)); |
| 4438 | |
| 4439 | Label profiler_disabled; |
| 4440 | Label end_profiler_check; |
| 4441 | li(t9, Operand(ExternalReference::is_profiling_address(isolate()))); |
| 4442 | lb(t9, MemOperand(t9, 0)); |
| 4443 | Branch(&profiler_disabled, eq, t9, Operand(zero_reg)); |
| 4444 | |
| 4445 | // Additional parameter is the address of the actual callback. |
| 4446 | li(t9, Operand(thunk_ref)); |
| 4447 | jmp(&end_profiler_check); |
| 4448 | |
| 4449 | bind(&profiler_disabled); |
| 4450 | mov(t9, function_address); |
| 4451 | bind(&end_profiler_check); |
| 4452 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4453 | // Allocate HandleScope in callee-save registers. |
| 4454 | li(s3, Operand(next_address)); |
| 4455 | lw(s0, MemOperand(s3, kNextOffset)); |
| 4456 | lw(s1, MemOperand(s3, kLimitOffset)); |
| 4457 | lw(s2, MemOperand(s3, kLevelOffset)); |
| 4458 | Addu(s2, s2, Operand(1)); |
| 4459 | sw(s2, MemOperand(s3, kLevelOffset)); |
| 4460 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4461 | if (FLAG_log_timer_events) { |
| 4462 | FrameScope frame(this, StackFrame::MANUAL); |
| 4463 | PushSafepointRegisters(); |
| 4464 | PrepareCallCFunction(1, a0); |
| 4465 | li(a0, Operand(ExternalReference::isolate_address(isolate()))); |
| 4466 | CallCFunction(ExternalReference::log_enter_external_function(isolate()), 1); |
| 4467 | PopSafepointRegisters(); |
| 4468 | } |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4469 | |
| 4470 | // Native call returns to the DirectCEntry stub which redirects to the |
| 4471 | // return address pushed on stack (could have moved after GC). |
| 4472 | // DirectCEntry stub itself is generated early and never moves. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4473 | DirectCEntryStub stub(isolate()); |
| 4474 | stub.GenerateCall(this, t9); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4475 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4476 | if (FLAG_log_timer_events) { |
| 4477 | FrameScope frame(this, StackFrame::MANUAL); |
| 4478 | PushSafepointRegisters(); |
| 4479 | PrepareCallCFunction(1, a0); |
| 4480 | li(a0, Operand(ExternalReference::isolate_address(isolate()))); |
| 4481 | CallCFunction(ExternalReference::log_leave_external_function(isolate()), 1); |
| 4482 | PopSafepointRegisters(); |
| 4483 | } |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4484 | |
| 4485 | Label promote_scheduled_exception; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4486 | Label exception_handled; |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4487 | Label delete_allocated_handles; |
| 4488 | Label leave_exit_frame; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4489 | Label return_value_loaded; |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4490 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4491 | // Load value from ReturnValue. |
| 4492 | lw(v0, return_value_operand); |
| 4493 | bind(&return_value_loaded); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4494 | |
| 4495 | // No more valid handles (the result handle was the last one). Restore |
| 4496 | // previous handle scope. |
| 4497 | sw(s0, MemOperand(s3, kNextOffset)); |
| 4498 | if (emit_debug_code()) { |
| 4499 | lw(a1, MemOperand(s3, kLevelOffset)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4500 | Check(eq, kUnexpectedLevelAfterReturnFromApiCall, a1, Operand(s2)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4501 | } |
| 4502 | Subu(s2, s2, Operand(1)); |
| 4503 | sw(s2, MemOperand(s3, kLevelOffset)); |
| 4504 | lw(at, MemOperand(s3, kLimitOffset)); |
| 4505 | Branch(&delete_allocated_handles, ne, s1, Operand(at)); |
| 4506 | |
| 4507 | // Check if the function scheduled an exception. |
| 4508 | bind(&leave_exit_frame); |
| 4509 | LoadRoot(t0, Heap::kTheHoleValueRootIndex); |
| 4510 | li(at, Operand(ExternalReference::scheduled_exception_address(isolate()))); |
| 4511 | lw(t1, MemOperand(at)); |
| 4512 | Branch(&promote_scheduled_exception, ne, t0, Operand(t1)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4513 | bind(&exception_handled); |
| 4514 | |
| 4515 | bool restore_context = context_restore_operand != NULL; |
| 4516 | if (restore_context) { |
| 4517 | lw(cp, *context_restore_operand); |
| 4518 | } |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4519 | li(s0, Operand(stack_space)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4520 | LeaveExitFrame(false, s0, !restore_context, EMIT_RETURN); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4521 | |
| 4522 | bind(&promote_scheduled_exception); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4523 | { |
| 4524 | FrameScope frame(this, StackFrame::INTERNAL); |
| 4525 | CallExternalReference( |
| 4526 | ExternalReference(Runtime::kPromoteScheduledException, isolate()), |
| 4527 | 0); |
| 4528 | } |
| 4529 | jmp(&exception_handled); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4530 | |
| 4531 | // HandleScope limit has changed. Delete allocated extensions. |
| 4532 | bind(&delete_allocated_handles); |
| 4533 | sw(s1, MemOperand(s3, kLimitOffset)); |
| 4534 | mov(s0, v0); |
| 4535 | mov(a0, v0); |
| 4536 | PrepareCallCFunction(1, s1); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4537 | li(a0, Operand(ExternalReference::isolate_address(isolate()))); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4538 | CallCFunction(ExternalReference::delete_handle_scope_extensions(isolate()), |
| 4539 | 1); |
| 4540 | mov(v0, s0); |
| 4541 | jmp(&leave_exit_frame); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4542 | } |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4543 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4544 | |
| 4545 | bool MacroAssembler::AllowThisStubCall(CodeStub* stub) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4546 | return has_frame_ || !stub->SometimesSetsUpAFrame(); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4547 | } |
| 4548 | |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 4549 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4550 | void MacroAssembler::IndexFromHash(Register hash, Register index) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4551 | // If the hash field contains an array index pick it out. The assert checks |
| 4552 | // that the constants for the maximum number of digits for an array index |
| 4553 | // cached in the hash field and the number of bits reserved for it does not |
| 4554 | // conflict. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4555 | DCHECK(TenToThe(String::kMaxCachedArrayIndexLength) < |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4556 | (1 << String::kArrayIndexValueBits)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4557 | DecodeFieldToSmi<String::ArrayIndexValueBits>(index, hash); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4558 | } |
| 4559 | |
| 4560 | |
| 4561 | void MacroAssembler::ObjectToDoubleFPURegister(Register object, |
| 4562 | FPURegister result, |
| 4563 | Register scratch1, |
| 4564 | Register scratch2, |
| 4565 | Register heap_number_map, |
| 4566 | Label* not_number, |
| 4567 | ObjectToDoubleFlags flags) { |
| 4568 | Label done; |
| 4569 | if ((flags & OBJECT_NOT_SMI) == 0) { |
| 4570 | Label not_smi; |
| 4571 | JumpIfNotSmi(object, ¬_smi); |
| 4572 | // Remove smi tag and convert to double. |
| 4573 | sra(scratch1, object, kSmiTagSize); |
| 4574 | mtc1(scratch1, result); |
| 4575 | cvt_d_w(result, result); |
| 4576 | Branch(&done); |
| 4577 | bind(¬_smi); |
| 4578 | } |
| 4579 | // Check for heap number and load double value from it. |
| 4580 | lw(scratch1, FieldMemOperand(object, HeapObject::kMapOffset)); |
| 4581 | Branch(not_number, ne, scratch1, Operand(heap_number_map)); |
| 4582 | |
| 4583 | if ((flags & AVOID_NANS_AND_INFINITIES) != 0) { |
| 4584 | // If exponent is all ones the number is either a NaN or +/-Infinity. |
| 4585 | Register exponent = scratch1; |
| 4586 | Register mask_reg = scratch2; |
| 4587 | lw(exponent, FieldMemOperand(object, HeapNumber::kExponentOffset)); |
| 4588 | li(mask_reg, HeapNumber::kExponentMask); |
| 4589 | |
| 4590 | And(exponent, exponent, mask_reg); |
| 4591 | Branch(not_number, eq, exponent, Operand(mask_reg)); |
| 4592 | } |
| 4593 | ldc1(result, FieldMemOperand(object, HeapNumber::kValueOffset)); |
| 4594 | bind(&done); |
| 4595 | } |
| 4596 | |
| 4597 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4598 | void MacroAssembler::SmiToDoubleFPURegister(Register smi, |
| 4599 | FPURegister value, |
| 4600 | Register scratch1) { |
| 4601 | sra(scratch1, smi, kSmiTagSize); |
| 4602 | mtc1(scratch1, value); |
| 4603 | cvt_d_w(value, value); |
| 4604 | } |
| 4605 | |
| 4606 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame^] | 4607 | void MacroAssembler::AdduAndCheckForOverflow(Register dst, Register left, |
| 4608 | const Operand& right, |
| 4609 | Register overflow_dst, |
| 4610 | Register scratch) { |
| 4611 | if (right.is_reg()) { |
| 4612 | AdduAndCheckForOverflow(dst, left, right.rm(), overflow_dst, scratch); |
| 4613 | } else { |
| 4614 | if (dst.is(left)) { |
| 4615 | mov(scratch, left); // Preserve left. |
| 4616 | addiu(dst, left, right.immediate()); // Left is overwritten. |
| 4617 | xor_(scratch, dst, scratch); // Original left. |
| 4618 | // Load right since xori takes uint16 as immediate. |
| 4619 | addiu(t9, zero_reg, right.immediate()); |
| 4620 | xor_(overflow_dst, dst, t9); |
| 4621 | and_(overflow_dst, overflow_dst, scratch); |
| 4622 | } else { |
| 4623 | addiu(dst, left, right.immediate()); |
| 4624 | xor_(overflow_dst, dst, left); |
| 4625 | // Load right since xori takes uint16 as immediate. |
| 4626 | addiu(t9, zero_reg, right.immediate()); |
| 4627 | xor_(scratch, dst, t9); |
| 4628 | and_(overflow_dst, scratch, overflow_dst); |
| 4629 | } |
| 4630 | } |
| 4631 | } |
| 4632 | |
| 4633 | |
| 4634 | void MacroAssembler::AdduAndCheckForOverflow(Register dst, Register left, |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4635 | Register right, |
| 4636 | Register overflow_dst, |
| 4637 | Register scratch) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4638 | DCHECK(!dst.is(overflow_dst)); |
| 4639 | DCHECK(!dst.is(scratch)); |
| 4640 | DCHECK(!overflow_dst.is(scratch)); |
| 4641 | DCHECK(!overflow_dst.is(left)); |
| 4642 | DCHECK(!overflow_dst.is(right)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4643 | |
| 4644 | if (left.is(right) && dst.is(left)) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4645 | DCHECK(!dst.is(t9)); |
| 4646 | DCHECK(!scratch.is(t9)); |
| 4647 | DCHECK(!left.is(t9)); |
| 4648 | DCHECK(!right.is(t9)); |
| 4649 | DCHECK(!overflow_dst.is(t9)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4650 | mov(t9, right); |
| 4651 | right = t9; |
| 4652 | } |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4653 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4654 | if (dst.is(left)) { |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 4655 | mov(scratch, left); // Preserve left. |
| 4656 | addu(dst, left, right); // Left is overwritten. |
| 4657 | xor_(scratch, dst, scratch); // Original left. |
| 4658 | xor_(overflow_dst, dst, right); |
| 4659 | and_(overflow_dst, overflow_dst, scratch); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4660 | } else if (dst.is(right)) { |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 4661 | mov(scratch, right); // Preserve right. |
| 4662 | addu(dst, left, right); // Right is overwritten. |
| 4663 | xor_(scratch, dst, scratch); // Original right. |
| 4664 | xor_(overflow_dst, dst, left); |
| 4665 | and_(overflow_dst, overflow_dst, scratch); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4666 | } else { |
| 4667 | addu(dst, left, right); |
| 4668 | xor_(overflow_dst, dst, left); |
| 4669 | xor_(scratch, dst, right); |
| 4670 | and_(overflow_dst, scratch, overflow_dst); |
| 4671 | } |
| 4672 | } |
| 4673 | |
| 4674 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame^] | 4675 | void MacroAssembler::SubuAndCheckForOverflow(Register dst, Register left, |
| 4676 | const Operand& right, |
| 4677 | Register overflow_dst, |
| 4678 | Register scratch) { |
| 4679 | if (right.is_reg()) { |
| 4680 | SubuAndCheckForOverflow(dst, left, right.rm(), overflow_dst, scratch); |
| 4681 | } else { |
| 4682 | if (dst.is(left)) { |
| 4683 | mov(scratch, left); // Preserve left. |
| 4684 | addiu(dst, left, -(right.immediate())); // Left is overwritten. |
| 4685 | xor_(overflow_dst, dst, scratch); // scratch is original left. |
| 4686 | // Load right since xori takes uint16 as immediate. |
| 4687 | addiu(t9, zero_reg, right.immediate()); |
| 4688 | xor_(scratch, scratch, t9); // scratch is original left. |
| 4689 | and_(overflow_dst, scratch, overflow_dst); |
| 4690 | } else { |
| 4691 | addiu(dst, left, -(right.immediate())); |
| 4692 | xor_(overflow_dst, dst, left); |
| 4693 | // Load right since xori takes uint16 as immediate. |
| 4694 | addiu(t9, zero_reg, right.immediate()); |
| 4695 | xor_(scratch, left, t9); |
| 4696 | and_(overflow_dst, scratch, overflow_dst); |
| 4697 | } |
| 4698 | } |
| 4699 | } |
| 4700 | |
| 4701 | |
| 4702 | void MacroAssembler::SubuAndCheckForOverflow(Register dst, Register left, |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4703 | Register right, |
| 4704 | Register overflow_dst, |
| 4705 | Register scratch) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4706 | DCHECK(!dst.is(overflow_dst)); |
| 4707 | DCHECK(!dst.is(scratch)); |
| 4708 | DCHECK(!overflow_dst.is(scratch)); |
| 4709 | DCHECK(!overflow_dst.is(left)); |
| 4710 | DCHECK(!overflow_dst.is(right)); |
| 4711 | DCHECK(!scratch.is(left)); |
| 4712 | DCHECK(!scratch.is(right)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4713 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4714 | // This happens with some crankshaft code. Since Subu works fine if |
| 4715 | // left == right, let's not make that restriction here. |
| 4716 | if (left.is(right)) { |
| 4717 | mov(dst, zero_reg); |
| 4718 | mov(overflow_dst, zero_reg); |
| 4719 | return; |
| 4720 | } |
| 4721 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4722 | if (dst.is(left)) { |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 4723 | mov(scratch, left); // Preserve left. |
| 4724 | subu(dst, left, right); // Left is overwritten. |
| 4725 | xor_(overflow_dst, dst, scratch); // scratch is original left. |
| 4726 | xor_(scratch, scratch, right); // scratch is original left. |
| 4727 | and_(overflow_dst, scratch, overflow_dst); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4728 | } else if (dst.is(right)) { |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 4729 | mov(scratch, right); // Preserve right. |
| 4730 | subu(dst, left, right); // Right is overwritten. |
| 4731 | xor_(overflow_dst, dst, left); |
| 4732 | xor_(scratch, left, scratch); // Original right. |
| 4733 | and_(overflow_dst, scratch, overflow_dst); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4734 | } else { |
| 4735 | subu(dst, left, right); |
| 4736 | xor_(overflow_dst, dst, left); |
| 4737 | xor_(scratch, left, right); |
| 4738 | and_(overflow_dst, scratch, overflow_dst); |
| 4739 | } |
| 4740 | } |
| 4741 | |
| 4742 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4743 | void MacroAssembler::CallRuntime(const Runtime::Function* f, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4744 | int num_arguments, |
| 4745 | SaveFPRegsMode save_doubles) { |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 4746 | // All parameters are on the stack. v0 has the return value after call. |
| 4747 | |
| 4748 | // If the expected number of arguments of the runtime function is |
| 4749 | // constant, we check that the actual number of arguments match the |
| 4750 | // expectation. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4751 | CHECK(f->nargs < 0 || f->nargs == num_arguments); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 4752 | |
| 4753 | // TODO(1236192): Most runtime routines don't need the number of |
| 4754 | // arguments passed in because it is constant. At some point we |
| 4755 | // should remove this need and make the runtime routine entry code |
| 4756 | // smarter. |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4757 | PrepareCEntryArgs(num_arguments); |
| 4758 | PrepareCEntryFunction(ExternalReference(f, isolate())); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4759 | CEntryStub stub(isolate(), 1, save_doubles); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 4760 | CallStub(&stub); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 4761 | } |
| 4762 | |
| 4763 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4764 | void MacroAssembler::CallExternalReference(const ExternalReference& ext, |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4765 | int num_arguments, |
| 4766 | BranchDelaySlot bd) { |
| 4767 | PrepareCEntryArgs(num_arguments); |
| 4768 | PrepareCEntryFunction(ext); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4769 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4770 | CEntryStub stub(isolate(), 1); |
| 4771 | CallStub(&stub, TypeFeedbackId::None(), al, zero_reg, Operand(zero_reg), bd); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4772 | } |
| 4773 | |
| 4774 | |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 4775 | void MacroAssembler::TailCallExternalReference(const ExternalReference& ext, |
| 4776 | int num_arguments, |
| 4777 | int result_size) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4778 | // TODO(1236192): Most runtime routines don't need the number of |
| 4779 | // arguments passed in because it is constant. At some point we |
| 4780 | // should remove this need and make the runtime routine entry code |
| 4781 | // smarter. |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4782 | PrepareCEntryArgs(num_arguments); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4783 | JumpToExternalReference(ext); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 4784 | } |
| 4785 | |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 4786 | |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 4787 | void MacroAssembler::TailCallRuntime(Runtime::FunctionId fid, |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 4788 | int num_arguments, |
| 4789 | int result_size) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4790 | TailCallExternalReference(ExternalReference(fid, isolate()), |
| 4791 | num_arguments, |
| 4792 | result_size); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 4793 | } |
| 4794 | |
| 4795 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4796 | void MacroAssembler::JumpToExternalReference(const ExternalReference& builtin, |
| 4797 | BranchDelaySlot bd) { |
| 4798 | PrepareCEntryFunction(builtin); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4799 | CEntryStub stub(isolate(), 1); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4800 | Jump(stub.GetCode(), |
| 4801 | RelocInfo::CODE_TARGET, |
| 4802 | al, |
| 4803 | zero_reg, |
| 4804 | Operand(zero_reg), |
| 4805 | bd); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 4806 | } |
| 4807 | |
| 4808 | |
| 4809 | void MacroAssembler::InvokeBuiltin(Builtins::JavaScript id, |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4810 | InvokeFlag flag, |
| 4811 | const CallWrapper& call_wrapper) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4812 | // You can't call a builtin without a valid frame. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4813 | DCHECK(flag == JUMP_FUNCTION || has_frame()); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4814 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4815 | GetBuiltinEntry(t9, id); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4816 | if (flag == CALL_FUNCTION) { |
| 4817 | call_wrapper.BeforeCall(CallSize(t9)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4818 | Call(t9); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4819 | call_wrapper.AfterCall(); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4820 | } else { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4821 | DCHECK(flag == JUMP_FUNCTION); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4822 | Jump(t9); |
| 4823 | } |
| 4824 | } |
| 4825 | |
| 4826 | |
| 4827 | void MacroAssembler::GetBuiltinFunction(Register target, |
| 4828 | Builtins::JavaScript id) { |
| 4829 | // Load the builtins object into target register. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4830 | lw(target, MemOperand(cp, Context::SlotOffset(Context::GLOBAL_OBJECT_INDEX))); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4831 | lw(target, FieldMemOperand(target, GlobalObject::kBuiltinsOffset)); |
| 4832 | // Load the JavaScript builtin function from the builtins object. |
| 4833 | lw(target, FieldMemOperand(target, |
| 4834 | JSBuiltinsObject::OffsetOfFunctionWithId(id))); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 4835 | } |
| 4836 | |
| 4837 | |
| 4838 | void MacroAssembler::GetBuiltinEntry(Register target, Builtins::JavaScript id) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4839 | DCHECK(!target.is(a1)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4840 | GetBuiltinFunction(a1, id); |
| 4841 | // Load the code entry point from the builtins object. |
| 4842 | lw(target, FieldMemOperand(a1, JSFunction::kCodeEntryOffset)); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 4843 | } |
| 4844 | |
| 4845 | |
| 4846 | void MacroAssembler::SetCounter(StatsCounter* counter, int value, |
| 4847 | Register scratch1, Register scratch2) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4848 | if (FLAG_native_code_counters && counter->Enabled()) { |
| 4849 | li(scratch1, Operand(value)); |
| 4850 | li(scratch2, Operand(ExternalReference(counter))); |
| 4851 | sw(scratch1, MemOperand(scratch2)); |
| 4852 | } |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 4853 | } |
| 4854 | |
| 4855 | |
| 4856 | void MacroAssembler::IncrementCounter(StatsCounter* counter, int value, |
| 4857 | Register scratch1, Register scratch2) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4858 | DCHECK(value > 0); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4859 | if (FLAG_native_code_counters && counter->Enabled()) { |
| 4860 | li(scratch2, Operand(ExternalReference(counter))); |
| 4861 | lw(scratch1, MemOperand(scratch2)); |
| 4862 | Addu(scratch1, scratch1, Operand(value)); |
| 4863 | sw(scratch1, MemOperand(scratch2)); |
| 4864 | } |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 4865 | } |
| 4866 | |
| 4867 | |
| 4868 | void MacroAssembler::DecrementCounter(StatsCounter* counter, int value, |
| 4869 | Register scratch1, Register scratch2) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4870 | DCHECK(value > 0); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4871 | if (FLAG_native_code_counters && counter->Enabled()) { |
| 4872 | li(scratch2, Operand(ExternalReference(counter))); |
| 4873 | lw(scratch1, MemOperand(scratch2)); |
| 4874 | Subu(scratch1, scratch1, Operand(value)); |
| 4875 | sw(scratch1, MemOperand(scratch2)); |
| 4876 | } |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 4877 | } |
| 4878 | |
| 4879 | |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 4880 | // ----------------------------------------------------------------------------- |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4881 | // Debugging. |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 4882 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4883 | void MacroAssembler::Assert(Condition cc, BailoutReason reason, |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 4884 | Register rs, Operand rt) { |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4885 | if (emit_debug_code()) |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4886 | Check(cc, reason, rs, rt); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4887 | } |
| 4888 | |
| 4889 | |
| 4890 | void MacroAssembler::AssertFastElements(Register elements) { |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4891 | if (emit_debug_code()) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4892 | DCHECK(!elements.is(at)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4893 | Label ok; |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4894 | push(elements); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4895 | lw(elements, FieldMemOperand(elements, HeapObject::kMapOffset)); |
| 4896 | LoadRoot(at, Heap::kFixedArrayMapRootIndex); |
| 4897 | Branch(&ok, eq, elements, Operand(at)); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 4898 | LoadRoot(at, Heap::kFixedDoubleArrayMapRootIndex); |
| 4899 | Branch(&ok, eq, elements, Operand(at)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4900 | LoadRoot(at, Heap::kFixedCOWArrayMapRootIndex); |
| 4901 | Branch(&ok, eq, elements, Operand(at)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4902 | Abort(kJSObjectWithFastElementsMapHasSlowElements); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4903 | bind(&ok); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4904 | pop(elements); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4905 | } |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 4906 | } |
| 4907 | |
| 4908 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4909 | void MacroAssembler::Check(Condition cc, BailoutReason reason, |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 4910 | Register rs, Operand rt) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4911 | Label L; |
| 4912 | Branch(&L, cc, rs, rt); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4913 | Abort(reason); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4914 | // Will not return here. |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4915 | bind(&L); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 4916 | } |
| 4917 | |
| 4918 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4919 | void MacroAssembler::Abort(BailoutReason reason) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4920 | Label abort_start; |
| 4921 | bind(&abort_start); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4922 | #ifdef DEBUG |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4923 | const char* msg = GetBailoutReason(reason); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4924 | if (msg != NULL) { |
| 4925 | RecordComment("Abort message: "); |
| 4926 | RecordComment(msg); |
| 4927 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4928 | |
| 4929 | if (FLAG_trap_on_abort) { |
| 4930 | stop(msg); |
| 4931 | return; |
| 4932 | } |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4933 | #endif |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4934 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4935 | li(a0, Operand(Smi::FromInt(reason))); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4936 | push(a0); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4937 | // Disable stub call restrictions to always allow calls to abort. |
| 4938 | if (!has_frame_) { |
| 4939 | // We don't actually want to generate a pile of code for this, so just |
| 4940 | // claim there is a stack frame, without generating one. |
| 4941 | FrameScope scope(this, StackFrame::NONE); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4942 | CallRuntime(Runtime::kAbort, 1); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4943 | } else { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4944 | CallRuntime(Runtime::kAbort, 1); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4945 | } |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4946 | // Will not return here. |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4947 | if (is_trampoline_pool_blocked()) { |
| 4948 | // If the calling code cares about the exact number of |
| 4949 | // instructions generated, we insert padding here to keep the size |
| 4950 | // of the Abort macro constant. |
| 4951 | // Currently in debug mode with debug_code enabled the number of |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4952 | // generated instructions is 10, so we use this as a maximum value. |
| 4953 | static const int kExpectedAbortInstructions = 10; |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4954 | int abort_instructions = InstructionsGeneratedSince(&abort_start); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4955 | DCHECK(abort_instructions <= kExpectedAbortInstructions); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4956 | while (abort_instructions++ < kExpectedAbortInstructions) { |
| 4957 | nop(); |
| 4958 | } |
| 4959 | } |
| 4960 | } |
| 4961 | |
| 4962 | |
| 4963 | void MacroAssembler::LoadContext(Register dst, int context_chain_length) { |
| 4964 | if (context_chain_length > 0) { |
| 4965 | // Move up the chain of contexts to the context containing the slot. |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 4966 | lw(dst, MemOperand(cp, Context::SlotOffset(Context::PREVIOUS_INDEX))); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4967 | for (int i = 1; i < context_chain_length; i++) { |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 4968 | lw(dst, MemOperand(dst, Context::SlotOffset(Context::PREVIOUS_INDEX))); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4969 | } |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4970 | } else { |
| 4971 | // Slot is in the current function context. Move it into the |
| 4972 | // destination register in case we store into it (the write barrier |
| 4973 | // cannot be allowed to destroy the context in esi). |
| 4974 | Move(dst, cp); |
| 4975 | } |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4976 | } |
| 4977 | |
| 4978 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4979 | void MacroAssembler::LoadTransitionedArrayMapConditional( |
| 4980 | ElementsKind expected_kind, |
| 4981 | ElementsKind transitioned_kind, |
| 4982 | Register map_in_out, |
| 4983 | Register scratch, |
| 4984 | Label* no_map_match) { |
| 4985 | // Load the global or builtins object from the current context. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4986 | lw(scratch, |
| 4987 | MemOperand(cp, Context::SlotOffset(Context::GLOBAL_OBJECT_INDEX))); |
| 4988 | lw(scratch, FieldMemOperand(scratch, GlobalObject::kNativeContextOffset)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4989 | |
| 4990 | // Check that the function's map is the same as the expected cached map. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4991 | lw(scratch, |
| 4992 | MemOperand(scratch, |
| 4993 | Context::SlotOffset(Context::JS_ARRAY_MAPS_INDEX))); |
| 4994 | size_t offset = expected_kind * kPointerSize + |
| 4995 | FixedArrayBase::kHeaderSize; |
| 4996 | lw(at, FieldMemOperand(scratch, offset)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4997 | Branch(no_map_match, ne, map_in_out, Operand(at)); |
| 4998 | |
| 4999 | // Use the transitioned cached map. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5000 | offset = transitioned_kind * kPointerSize + |
| 5001 | FixedArrayBase::kHeaderSize; |
| 5002 | lw(map_in_out, FieldMemOperand(scratch, offset)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5003 | } |
| 5004 | |
| 5005 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5006 | void MacroAssembler::LoadGlobalFunction(int index, Register function) { |
| 5007 | // Load the global or builtins object from the current context. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5008 | lw(function, |
| 5009 | MemOperand(cp, Context::SlotOffset(Context::GLOBAL_OBJECT_INDEX))); |
| 5010 | // Load the native context from the global or builtins object. |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5011 | lw(function, FieldMemOperand(function, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5012 | GlobalObject::kNativeContextOffset)); |
| 5013 | // Load the function from the native context. |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5014 | lw(function, MemOperand(function, Context::SlotOffset(index))); |
| 5015 | } |
| 5016 | |
| 5017 | |
| 5018 | void MacroAssembler::LoadGlobalFunctionInitialMap(Register function, |
| 5019 | Register map, |
| 5020 | Register scratch) { |
| 5021 | // Load the initial map. The global functions all have initial maps. |
| 5022 | lw(map, FieldMemOperand(function, JSFunction::kPrototypeOrInitialMapOffset)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 5023 | if (emit_debug_code()) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5024 | Label ok, fail; |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 5025 | CheckMap(map, scratch, Heap::kMetaMapRootIndex, &fail, DO_SMI_CHECK); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5026 | Branch(&ok); |
| 5027 | bind(&fail); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5028 | Abort(kGlobalFunctionsMustHaveInitialMap); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5029 | bind(&ok); |
| 5030 | } |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 5031 | } |
| 5032 | |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 5033 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5034 | void MacroAssembler::StubPrologue() { |
| 5035 | Push(ra, fp, cp); |
| 5036 | Push(Smi::FromInt(StackFrame::STUB)); |
| 5037 | // Adjust FP to point to saved FP. |
| 5038 | Addu(fp, sp, Operand(StandardFrameConstants::kFixedFrameSizeFromFp)); |
| 5039 | } |
| 5040 | |
| 5041 | |
| 5042 | void MacroAssembler::Prologue(bool code_pre_aging) { |
| 5043 | PredictableCodeSizeScope predictible_code_size_scope( |
| 5044 | this, kNoCodeAgeSequenceLength); |
| 5045 | // The following three instructions must remain together and unmodified |
| 5046 | // for code aging to work properly. |
| 5047 | if (code_pre_aging) { |
| 5048 | // Pre-age the code. |
| 5049 | Code* stub = Code::GetPreAgedCodeAgeStub(isolate()); |
| 5050 | nop(Assembler::CODE_AGE_MARKER_NOP); |
| 5051 | // Load the stub address to t9 and call it, |
| 5052 | // GetCodeAgeAndParity() extracts the stub address from this instruction. |
| 5053 | li(t9, |
| 5054 | Operand(reinterpret_cast<uint32_t>(stub->instruction_start())), |
| 5055 | CONSTANT_SIZE); |
| 5056 | nop(); // Prevent jalr to jal optimization. |
| 5057 | jalr(t9, a0); |
| 5058 | nop(); // Branch delay slot nop. |
| 5059 | nop(); // Pad the empty space. |
| 5060 | } else { |
| 5061 | Push(ra, fp, cp, a1); |
| 5062 | nop(Assembler::CODE_AGE_SEQUENCE_NOP); |
| 5063 | // Adjust fp to point to caller's fp. |
| 5064 | Addu(fp, sp, Operand(StandardFrameConstants::kFixedFrameSizeFromFp)); |
| 5065 | } |
| 5066 | } |
| 5067 | |
| 5068 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame^] | 5069 | void MacroAssembler::EnterFrame(StackFrame::Type type, |
| 5070 | bool load_constant_pool_pointer_reg) { |
| 5071 | // Out-of-line constant pool not implemented on mips. |
| 5072 | UNREACHABLE(); |
| 5073 | } |
| 5074 | |
| 5075 | |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 5076 | void MacroAssembler::EnterFrame(StackFrame::Type type) { |
| 5077 | addiu(sp, sp, -5 * kPointerSize); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5078 | li(t8, Operand(Smi::FromInt(type))); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5079 | li(t9, Operand(CodeObject()), CONSTANT_SIZE); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 5080 | sw(ra, MemOperand(sp, 4 * kPointerSize)); |
| 5081 | sw(fp, MemOperand(sp, 3 * kPointerSize)); |
| 5082 | sw(cp, MemOperand(sp, 2 * kPointerSize)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5083 | sw(t8, MemOperand(sp, 1 * kPointerSize)); |
| 5084 | sw(t9, MemOperand(sp, 0 * kPointerSize)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5085 | // Adjust FP to point to saved FP. |
| 5086 | Addu(fp, sp, |
| 5087 | Operand(StandardFrameConstants::kFixedFrameSizeFromFp + kPointerSize)); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 5088 | } |
| 5089 | |
| 5090 | |
| 5091 | void MacroAssembler::LeaveFrame(StackFrame::Type type) { |
| 5092 | mov(sp, fp); |
| 5093 | lw(fp, MemOperand(sp, 0 * kPointerSize)); |
| 5094 | lw(ra, MemOperand(sp, 1 * kPointerSize)); |
| 5095 | addiu(sp, sp, 2 * kPointerSize); |
| 5096 | } |
| 5097 | |
| 5098 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 5099 | void MacroAssembler::EnterExitFrame(bool save_doubles, |
| 5100 | int stack_space) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5101 | // Set up the frame structure on the stack. |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 5102 | STATIC_ASSERT(2 * kPointerSize == ExitFrameConstants::kCallerSPDisplacement); |
| 5103 | STATIC_ASSERT(1 * kPointerSize == ExitFrameConstants::kCallerPCOffset); |
| 5104 | STATIC_ASSERT(0 * kPointerSize == ExitFrameConstants::kCallerFPOffset); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 5105 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 5106 | // This is how the stack will look: |
| 5107 | // fp + 2 (==kCallerSPDisplacement) - old stack's end |
| 5108 | // [fp + 1 (==kCallerPCOffset)] - saved old ra |
| 5109 | // [fp + 0 (==kCallerFPOffset)] - saved old fp |
| 5110 | // [fp - 1 (==kSPOffset)] - sp of the called function |
| 5111 | // [fp - 2 (==kCodeOffset)] - CodeObject |
| 5112 | // fp - (2 + stack_space + alignment) == sp == [fp - kSPOffset] - top of the |
| 5113 | // new stack (will contain saved ra) |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 5114 | |
| 5115 | // Save registers. |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 5116 | addiu(sp, sp, -4 * kPointerSize); |
| 5117 | sw(ra, MemOperand(sp, 3 * kPointerSize)); |
| 5118 | sw(fp, MemOperand(sp, 2 * kPointerSize)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5119 | addiu(fp, sp, 2 * kPointerSize); // Set up new frame pointer. |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 5120 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 5121 | if (emit_debug_code()) { |
| 5122 | sw(zero_reg, MemOperand(fp, ExitFrameConstants::kSPOffset)); |
| 5123 | } |
| 5124 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5125 | // Accessed from ExitFrame::code_slot. |
| 5126 | li(t8, Operand(CodeObject()), CONSTANT_SIZE); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 5127 | sw(t8, MemOperand(fp, ExitFrameConstants::kCodeOffset)); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 5128 | |
| 5129 | // Save the frame pointer and the context in top. |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 5130 | li(t8, Operand(ExternalReference(Isolate::kCEntryFPAddress, isolate()))); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5131 | sw(fp, MemOperand(t8)); |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 5132 | li(t8, Operand(ExternalReference(Isolate::kContextAddress, isolate()))); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5133 | sw(cp, MemOperand(t8)); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 5134 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 5135 | const int frame_alignment = MacroAssembler::ActivationFrameAlignment(); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5136 | if (save_doubles) { |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 5137 | // 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] | 5138 | DCHECK(kDoubleSize == frame_alignment); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 5139 | if (frame_alignment > 0) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5140 | DCHECK(base::bits::IsPowerOfTwo32(frame_alignment)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 5141 | And(sp, sp, Operand(-frame_alignment)); // Align stack. |
| 5142 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5143 | int space = FPURegister::kMaxNumRegisters * kDoubleSize; |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5144 | Subu(sp, sp, Operand(space)); |
| 5145 | // Remember: we only need to save every 2nd double FPU value. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5146 | for (int i = 0; i < FPURegister::kMaxNumRegisters; i+=2) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5147 | FPURegister reg = FPURegister::from_code(i); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 5148 | sdc1(reg, MemOperand(sp, i * kDoubleSize)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5149 | } |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5150 | } |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 5151 | |
| 5152 | // Reserve place for the return address, stack space and an optional slot |
| 5153 | // (used by the DirectCEntryStub to hold the return value if a struct is |
| 5154 | // returned) and align the frame preparing for calling the runtime function. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5155 | DCHECK(stack_space >= 0); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 5156 | Subu(sp, sp, Operand((stack_space + 2) * kPointerSize)); |
| 5157 | if (frame_alignment > 0) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5158 | DCHECK(base::bits::IsPowerOfTwo32(frame_alignment)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 5159 | And(sp, sp, Operand(-frame_alignment)); // Align stack. |
| 5160 | } |
| 5161 | |
| 5162 | // Set the exit frame sp value to point just before the return address |
| 5163 | // location. |
| 5164 | addiu(at, sp, kPointerSize); |
| 5165 | sw(at, MemOperand(fp, ExitFrameConstants::kSPOffset)); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 5166 | } |
| 5167 | |
| 5168 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 5169 | void MacroAssembler::LeaveExitFrame(bool save_doubles, |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5170 | Register argument_count, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5171 | bool restore_context, |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5172 | bool do_return) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5173 | // Optionally restore all double registers. |
| 5174 | if (save_doubles) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5175 | // Remember: we only need to restore every 2nd double FPU value. |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 5176 | lw(t8, MemOperand(fp, ExitFrameConstants::kSPOffset)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5177 | for (int i = 0; i < FPURegister::kMaxNumRegisters; i+=2) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5178 | FPURegister reg = FPURegister::from_code(i); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 5179 | ldc1(reg, MemOperand(t8, i * kDoubleSize + kPointerSize)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5180 | } |
| 5181 | } |
| 5182 | |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 5183 | // Clear top frame. |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 5184 | li(t8, Operand(ExternalReference(Isolate::kCEntryFPAddress, isolate()))); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5185 | sw(zero_reg, MemOperand(t8)); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 5186 | |
| 5187 | // Restore current context from top and clear it in debug mode. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5188 | if (restore_context) { |
| 5189 | li(t8, Operand(ExternalReference(Isolate::kContextAddress, isolate()))); |
| 5190 | lw(cp, MemOperand(t8)); |
| 5191 | } |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 5192 | #ifdef DEBUG |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5193 | li(t8, Operand(ExternalReference(Isolate::kContextAddress, isolate()))); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5194 | sw(a3, MemOperand(t8)); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 5195 | #endif |
| 5196 | |
| 5197 | // Pop the arguments, restore registers, and return. |
| 5198 | mov(sp, fp); // Respect ABI stack constraint. |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 5199 | lw(fp, MemOperand(sp, ExitFrameConstants::kCallerFPOffset)); |
| 5200 | lw(ra, MemOperand(sp, ExitFrameConstants::kCallerPCOffset)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5201 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 5202 | if (argument_count.is_valid()) { |
| 5203 | sll(t8, argument_count, kPointerSizeLog2); |
| 5204 | addu(sp, sp, t8); |
| 5205 | } |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5206 | |
| 5207 | if (do_return) { |
| 5208 | Ret(USE_DELAY_SLOT); |
| 5209 | // If returning, the instruction in the delay slot will be the addiu below. |
| 5210 | } |
| 5211 | addiu(sp, sp, 8); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 5212 | } |
| 5213 | |
| 5214 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5215 | void MacroAssembler::InitializeNewString(Register string, |
| 5216 | Register length, |
| 5217 | Heap::RootListIndex map_index, |
| 5218 | Register scratch1, |
| 5219 | Register scratch2) { |
| 5220 | sll(scratch1, length, kSmiTagSize); |
| 5221 | LoadRoot(scratch2, map_index); |
| 5222 | sw(scratch1, FieldMemOperand(string, String::kLengthOffset)); |
| 5223 | li(scratch1, Operand(String::kEmptyHashField)); |
| 5224 | sw(scratch2, FieldMemOperand(string, HeapObject::kMapOffset)); |
| 5225 | sw(scratch1, FieldMemOperand(string, String::kHashFieldOffset)); |
| 5226 | } |
| 5227 | |
| 5228 | |
| 5229 | int MacroAssembler::ActivationFrameAlignment() { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5230 | #if V8_HOST_ARCH_MIPS |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5231 | // Running on the real platform. Use the alignment as mandated by the local |
| 5232 | // environment. |
| 5233 | // Note: This will break if we ever start generating snapshots on one Mips |
| 5234 | // platform for another Mips platform with a different alignment. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5235 | return base::OS::ActivationFrameAlignment(); |
| 5236 | #else // V8_HOST_ARCH_MIPS |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5237 | // If we are using the simulator then we should always align to the expected |
| 5238 | // alignment. As the simulator is used to generate snapshots we do not know |
| 5239 | // if the target platform will need alignment, so this is controlled from a |
| 5240 | // flag. |
| 5241 | return FLAG_sim_stack_alignment; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5242 | #endif // V8_HOST_ARCH_MIPS |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5243 | } |
| 5244 | |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 5245 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 5246 | void MacroAssembler::AssertStackIsAligned() { |
| 5247 | if (emit_debug_code()) { |
| 5248 | const int frame_alignment = ActivationFrameAlignment(); |
| 5249 | const int frame_alignment_mask = frame_alignment - 1; |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5250 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 5251 | if (frame_alignment > kPointerSize) { |
| 5252 | Label alignment_as_expected; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5253 | DCHECK(base::bits::IsPowerOfTwo32(frame_alignment)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 5254 | andi(at, sp, frame_alignment_mask); |
| 5255 | Branch(&alignment_as_expected, eq, at, Operand(zero_reg)); |
| 5256 | // Don't use Check here, as it will call Runtime_Abort re-entering here. |
| 5257 | stop("Unexpected stack alignment"); |
| 5258 | bind(&alignment_as_expected); |
| 5259 | } |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 5260 | } |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 5261 | } |
| 5262 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5263 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5264 | void MacroAssembler::JumpIfNotPowerOfTwoOrZero( |
| 5265 | Register reg, |
| 5266 | Register scratch, |
| 5267 | Label* not_power_of_two_or_zero) { |
| 5268 | Subu(scratch, reg, Operand(1)); |
| 5269 | Branch(USE_DELAY_SLOT, not_power_of_two_or_zero, lt, |
| 5270 | scratch, Operand(zero_reg)); |
| 5271 | and_(at, scratch, reg); // In the delay slot. |
| 5272 | Branch(not_power_of_two_or_zero, ne, at, Operand(zero_reg)); |
| 5273 | } |
| 5274 | |
| 5275 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5276 | void MacroAssembler::SmiTagCheckOverflow(Register reg, Register overflow) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5277 | DCHECK(!reg.is(overflow)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5278 | mov(overflow, reg); // Save original value. |
| 5279 | SmiTag(reg); |
| 5280 | xor_(overflow, overflow, reg); // Overflow if (value ^ 2 * value) < 0. |
| 5281 | } |
| 5282 | |
| 5283 | |
| 5284 | void MacroAssembler::SmiTagCheckOverflow(Register dst, |
| 5285 | Register src, |
| 5286 | Register overflow) { |
| 5287 | if (dst.is(src)) { |
| 5288 | // Fall back to slower case. |
| 5289 | SmiTagCheckOverflow(dst, overflow); |
| 5290 | } else { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5291 | DCHECK(!dst.is(src)); |
| 5292 | DCHECK(!dst.is(overflow)); |
| 5293 | DCHECK(!src.is(overflow)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5294 | SmiTag(dst, src); |
| 5295 | xor_(overflow, dst, src); // Overflow if (value ^ 2 * value) < 0. |
| 5296 | } |
| 5297 | } |
| 5298 | |
| 5299 | |
| 5300 | void MacroAssembler::UntagAndJumpIfSmi(Register dst, |
| 5301 | Register src, |
| 5302 | Label* smi_case) { |
| 5303 | JumpIfSmi(src, smi_case, at, USE_DELAY_SLOT); |
| 5304 | SmiUntag(dst, src); |
| 5305 | } |
| 5306 | |
| 5307 | |
| 5308 | void MacroAssembler::UntagAndJumpIfNotSmi(Register dst, |
| 5309 | Register src, |
| 5310 | Label* non_smi_case) { |
| 5311 | JumpIfNotSmi(src, non_smi_case, at, USE_DELAY_SLOT); |
| 5312 | SmiUntag(dst, src); |
| 5313 | } |
| 5314 | |
| 5315 | void MacroAssembler::JumpIfSmi(Register value, |
| 5316 | Label* smi_label, |
| 5317 | Register scratch, |
| 5318 | BranchDelaySlot bd) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5319 | DCHECK_EQ(0, kSmiTag); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5320 | andi(scratch, value, kSmiTagMask); |
| 5321 | Branch(bd, smi_label, eq, scratch, Operand(zero_reg)); |
| 5322 | } |
| 5323 | |
| 5324 | void MacroAssembler::JumpIfNotSmi(Register value, |
| 5325 | Label* not_smi_label, |
| 5326 | Register scratch, |
| 5327 | BranchDelaySlot bd) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5328 | DCHECK_EQ(0, kSmiTag); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5329 | andi(scratch, value, kSmiTagMask); |
| 5330 | Branch(bd, not_smi_label, ne, scratch, Operand(zero_reg)); |
| 5331 | } |
| 5332 | |
| 5333 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5334 | void MacroAssembler::JumpIfNotBothSmi(Register reg1, |
| 5335 | Register reg2, |
| 5336 | Label* on_not_both_smi) { |
| 5337 | STATIC_ASSERT(kSmiTag == 0); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5338 | DCHECK_EQ(1, kSmiTagMask); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5339 | or_(at, reg1, reg2); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5340 | JumpIfNotSmi(at, on_not_both_smi); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5341 | } |
| 5342 | |
| 5343 | |
| 5344 | void MacroAssembler::JumpIfEitherSmi(Register reg1, |
| 5345 | Register reg2, |
| 5346 | Label* on_either_smi) { |
| 5347 | STATIC_ASSERT(kSmiTag == 0); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5348 | DCHECK_EQ(1, kSmiTagMask); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5349 | // Both Smi tags must be 1 (not Smi). |
| 5350 | and_(at, reg1, reg2); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5351 | JumpIfSmi(at, on_either_smi); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5352 | } |
| 5353 | |
| 5354 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5355 | void MacroAssembler::AssertNotSmi(Register object) { |
| 5356 | if (emit_debug_code()) { |
| 5357 | STATIC_ASSERT(kSmiTag == 0); |
| 5358 | andi(at, object, kSmiTagMask); |
| 5359 | Check(ne, kOperandIsASmi, at, Operand(zero_reg)); |
| 5360 | } |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5361 | } |
| 5362 | |
| 5363 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5364 | void MacroAssembler::AssertSmi(Register object) { |
| 5365 | if (emit_debug_code()) { |
| 5366 | STATIC_ASSERT(kSmiTag == 0); |
| 5367 | andi(at, object, kSmiTagMask); |
| 5368 | Check(eq, kOperandIsASmi, at, Operand(zero_reg)); |
| 5369 | } |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5370 | } |
| 5371 | |
| 5372 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5373 | void MacroAssembler::AssertString(Register object) { |
| 5374 | if (emit_debug_code()) { |
| 5375 | STATIC_ASSERT(kSmiTag == 0); |
| 5376 | SmiTst(object, t0); |
| 5377 | Check(ne, kOperandIsASmiAndNotAString, t0, Operand(zero_reg)); |
| 5378 | push(object); |
| 5379 | lw(object, FieldMemOperand(object, HeapObject::kMapOffset)); |
| 5380 | lbu(object, FieldMemOperand(object, Map::kInstanceTypeOffset)); |
| 5381 | Check(lo, kOperandIsNotAString, object, Operand(FIRST_NONSTRING_TYPE)); |
| 5382 | pop(object); |
| 5383 | } |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 5384 | } |
| 5385 | |
| 5386 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5387 | void MacroAssembler::AssertName(Register object) { |
| 5388 | if (emit_debug_code()) { |
| 5389 | STATIC_ASSERT(kSmiTag == 0); |
| 5390 | SmiTst(object, t0); |
| 5391 | Check(ne, kOperandIsASmiAndNotAName, t0, Operand(zero_reg)); |
| 5392 | push(object); |
| 5393 | lw(object, FieldMemOperand(object, HeapObject::kMapOffset)); |
| 5394 | lbu(object, FieldMemOperand(object, Map::kInstanceTypeOffset)); |
| 5395 | Check(le, kOperandIsNotAName, object, Operand(LAST_NAME_TYPE)); |
| 5396 | pop(object); |
| 5397 | } |
| 5398 | } |
| 5399 | |
| 5400 | |
| 5401 | void MacroAssembler::AssertUndefinedOrAllocationSite(Register object, |
| 5402 | Register scratch) { |
| 5403 | if (emit_debug_code()) { |
| 5404 | Label done_checking; |
| 5405 | AssertNotSmi(object); |
| 5406 | LoadRoot(scratch, Heap::kUndefinedValueRootIndex); |
| 5407 | Branch(&done_checking, eq, object, Operand(scratch)); |
| 5408 | push(object); |
| 5409 | lw(object, FieldMemOperand(object, HeapObject::kMapOffset)); |
| 5410 | LoadRoot(scratch, Heap::kAllocationSiteMapRootIndex); |
| 5411 | Assert(eq, kExpectedUndefinedOrCell, object, Operand(scratch)); |
| 5412 | pop(object); |
| 5413 | bind(&done_checking); |
| 5414 | } |
| 5415 | } |
| 5416 | |
| 5417 | |
| 5418 | void MacroAssembler::AssertIsRoot(Register reg, Heap::RootListIndex index) { |
| 5419 | if (emit_debug_code()) { |
| 5420 | DCHECK(!reg.is(at)); |
| 5421 | LoadRoot(at, index); |
| 5422 | Check(eq, kHeapNumberMapRegisterClobbered, reg, Operand(at)); |
| 5423 | } |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5424 | } |
| 5425 | |
| 5426 | |
| 5427 | void MacroAssembler::JumpIfNotHeapNumber(Register object, |
| 5428 | Register heap_number_map, |
| 5429 | Register scratch, |
| 5430 | Label* on_not_heap_number) { |
| 5431 | lw(scratch, FieldMemOperand(object, HeapObject::kMapOffset)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5432 | AssertIsRoot(heap_number_map, Heap::kHeapNumberMapRootIndex); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5433 | Branch(on_not_heap_number, ne, scratch, Operand(heap_number_map)); |
| 5434 | } |
| 5435 | |
| 5436 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5437 | void MacroAssembler::LookupNumberStringCache(Register object, |
| 5438 | Register result, |
| 5439 | Register scratch1, |
| 5440 | Register scratch2, |
| 5441 | Register scratch3, |
| 5442 | Label* not_found) { |
| 5443 | // Use of registers. Register result is used as a temporary. |
| 5444 | Register number_string_cache = result; |
| 5445 | Register mask = scratch3; |
| 5446 | |
| 5447 | // Load the number string cache. |
| 5448 | LoadRoot(number_string_cache, Heap::kNumberStringCacheRootIndex); |
| 5449 | |
| 5450 | // Make the hash mask from the length of the number string cache. It |
| 5451 | // contains two elements (number and string) for each cache entry. |
| 5452 | lw(mask, FieldMemOperand(number_string_cache, FixedArray::kLengthOffset)); |
| 5453 | // Divide length by two (length is a smi). |
| 5454 | sra(mask, mask, kSmiTagSize + 1); |
| 5455 | Addu(mask, mask, -1); // Make mask. |
| 5456 | |
| 5457 | // Calculate the entry in the number string cache. The hash value in the |
| 5458 | // number string cache for smis is just the smi value, and the hash for |
| 5459 | // doubles is the xor of the upper and lower words. See |
| 5460 | // Heap::GetNumberStringCache. |
| 5461 | Label is_smi; |
| 5462 | Label load_result_from_cache; |
| 5463 | JumpIfSmi(object, &is_smi); |
| 5464 | CheckMap(object, |
| 5465 | scratch1, |
| 5466 | Heap::kHeapNumberMapRootIndex, |
| 5467 | not_found, |
| 5468 | DONT_DO_SMI_CHECK); |
| 5469 | |
| 5470 | STATIC_ASSERT(8 == kDoubleSize); |
| 5471 | Addu(scratch1, |
| 5472 | object, |
| 5473 | Operand(HeapNumber::kValueOffset - kHeapObjectTag)); |
| 5474 | lw(scratch2, MemOperand(scratch1, kPointerSize)); |
| 5475 | lw(scratch1, MemOperand(scratch1, 0)); |
| 5476 | Xor(scratch1, scratch1, Operand(scratch2)); |
| 5477 | And(scratch1, scratch1, Operand(mask)); |
| 5478 | |
| 5479 | // Calculate address of entry in string cache: each entry consists |
| 5480 | // of two pointer sized fields. |
| 5481 | sll(scratch1, scratch1, kPointerSizeLog2 + 1); |
| 5482 | Addu(scratch1, number_string_cache, scratch1); |
| 5483 | |
| 5484 | Register probe = mask; |
| 5485 | lw(probe, FieldMemOperand(scratch1, FixedArray::kHeaderSize)); |
| 5486 | JumpIfSmi(probe, not_found); |
| 5487 | ldc1(f12, FieldMemOperand(object, HeapNumber::kValueOffset)); |
| 5488 | ldc1(f14, FieldMemOperand(probe, HeapNumber::kValueOffset)); |
| 5489 | BranchF(&load_result_from_cache, NULL, eq, f12, f14); |
| 5490 | Branch(not_found); |
| 5491 | |
| 5492 | bind(&is_smi); |
| 5493 | Register scratch = scratch1; |
| 5494 | sra(scratch, object, 1); // Shift away the tag. |
| 5495 | And(scratch, mask, Operand(scratch)); |
| 5496 | |
| 5497 | // Calculate address of entry in string cache: each entry consists |
| 5498 | // of two pointer sized fields. |
| 5499 | sll(scratch, scratch, kPointerSizeLog2 + 1); |
| 5500 | Addu(scratch, number_string_cache, scratch); |
| 5501 | |
| 5502 | // Check if the entry is the smi we are looking for. |
| 5503 | lw(probe, FieldMemOperand(scratch, FixedArray::kHeaderSize)); |
| 5504 | Branch(not_found, ne, object, Operand(probe)); |
| 5505 | |
| 5506 | // Get the result from the cache. |
| 5507 | bind(&load_result_from_cache); |
| 5508 | lw(result, FieldMemOperand(scratch, FixedArray::kHeaderSize + kPointerSize)); |
| 5509 | |
| 5510 | IncrementCounter(isolate()->counters()->number_to_string_native(), |
| 5511 | 1, |
| 5512 | scratch1, |
| 5513 | scratch2); |
| 5514 | } |
| 5515 | |
| 5516 | |
| 5517 | void MacroAssembler::JumpIfNonSmisNotBothSequentialOneByteStrings( |
| 5518 | Register first, Register second, Register scratch1, Register scratch2, |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5519 | Label* failure) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5520 | // Test that both first and second are sequential one-byte strings. |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5521 | // Assume that they are non-smis. |
| 5522 | lw(scratch1, FieldMemOperand(first, HeapObject::kMapOffset)); |
| 5523 | lw(scratch2, FieldMemOperand(second, HeapObject::kMapOffset)); |
| 5524 | lbu(scratch1, FieldMemOperand(scratch1, Map::kInstanceTypeOffset)); |
| 5525 | lbu(scratch2, FieldMemOperand(scratch2, Map::kInstanceTypeOffset)); |
| 5526 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5527 | JumpIfBothInstanceTypesAreNotSequentialOneByte(scratch1, scratch2, scratch1, |
| 5528 | scratch2, failure); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5529 | } |
| 5530 | |
| 5531 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5532 | void MacroAssembler::JumpIfNotBothSequentialOneByteStrings(Register first, |
| 5533 | Register second, |
| 5534 | Register scratch1, |
| 5535 | Register scratch2, |
| 5536 | Label* failure) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5537 | // Check that neither is a smi. |
| 5538 | STATIC_ASSERT(kSmiTag == 0); |
| 5539 | And(scratch1, first, Operand(second)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5540 | JumpIfSmi(scratch1, failure); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5541 | JumpIfNonSmisNotBothSequentialOneByteStrings(first, second, scratch1, |
| 5542 | scratch2, failure); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5543 | } |
| 5544 | |
| 5545 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5546 | void MacroAssembler::JumpIfBothInstanceTypesAreNotSequentialOneByte( |
| 5547 | Register first, Register second, Register scratch1, Register scratch2, |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5548 | Label* failure) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5549 | const int kFlatOneByteStringMask = |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5550 | kIsNotStringMask | kStringEncodingMask | kStringRepresentationMask; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5551 | const int kFlatOneByteStringTag = |
| 5552 | kStringTag | kOneByteStringTag | kSeqStringTag; |
| 5553 | DCHECK(kFlatOneByteStringTag <= 0xffff); // Ensure this fits 16-bit immed. |
| 5554 | andi(scratch1, first, kFlatOneByteStringMask); |
| 5555 | Branch(failure, ne, scratch1, Operand(kFlatOneByteStringTag)); |
| 5556 | andi(scratch2, second, kFlatOneByteStringMask); |
| 5557 | Branch(failure, ne, scratch2, Operand(kFlatOneByteStringTag)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5558 | } |
| 5559 | |
| 5560 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5561 | void MacroAssembler::JumpIfInstanceTypeIsNotSequentialOneByte(Register type, |
| 5562 | Register scratch, |
| 5563 | Label* failure) { |
| 5564 | const int kFlatOneByteStringMask = |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5565 | kIsNotStringMask | kStringEncodingMask | kStringRepresentationMask; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5566 | const int kFlatOneByteStringTag = |
| 5567 | kStringTag | kOneByteStringTag | kSeqStringTag; |
| 5568 | And(scratch, type, Operand(kFlatOneByteStringMask)); |
| 5569 | Branch(failure, ne, scratch, Operand(kFlatOneByteStringTag)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5570 | } |
| 5571 | |
| 5572 | |
| 5573 | static const int kRegisterPassedArguments = 4; |
| 5574 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5575 | int MacroAssembler::CalculateStackPassedWords(int num_reg_arguments, |
| 5576 | int num_double_arguments) { |
| 5577 | int stack_passed_words = 0; |
| 5578 | num_reg_arguments += 2 * num_double_arguments; |
| 5579 | |
| 5580 | // Up to four simple arguments are passed in registers a0..a3. |
| 5581 | if (num_reg_arguments > kRegisterPassedArguments) { |
| 5582 | stack_passed_words += num_reg_arguments - kRegisterPassedArguments; |
| 5583 | } |
| 5584 | stack_passed_words += kCArgSlotCount; |
| 5585 | return stack_passed_words; |
| 5586 | } |
| 5587 | |
| 5588 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5589 | void MacroAssembler::EmitSeqStringSetCharCheck(Register string, |
| 5590 | Register index, |
| 5591 | Register value, |
| 5592 | Register scratch, |
| 5593 | uint32_t encoding_mask) { |
| 5594 | Label is_object; |
| 5595 | SmiTst(string, at); |
| 5596 | Check(ne, kNonObject, at, Operand(zero_reg)); |
| 5597 | |
| 5598 | lw(at, FieldMemOperand(string, HeapObject::kMapOffset)); |
| 5599 | lbu(at, FieldMemOperand(at, Map::kInstanceTypeOffset)); |
| 5600 | |
| 5601 | andi(at, at, kStringRepresentationMask | kStringEncodingMask); |
| 5602 | li(scratch, Operand(encoding_mask)); |
| 5603 | Check(eq, kUnexpectedStringType, at, Operand(scratch)); |
| 5604 | |
| 5605 | // The index is assumed to be untagged coming in, tag it to compare with the |
| 5606 | // string length without using a temp register, it is restored at the end of |
| 5607 | // this function. |
| 5608 | Label index_tag_ok, index_tag_bad; |
| 5609 | TrySmiTag(index, scratch, &index_tag_bad); |
| 5610 | Branch(&index_tag_ok); |
| 5611 | bind(&index_tag_bad); |
| 5612 | Abort(kIndexIsTooLarge); |
| 5613 | bind(&index_tag_ok); |
| 5614 | |
| 5615 | lw(at, FieldMemOperand(string, String::kLengthOffset)); |
| 5616 | Check(lt, kIndexIsTooLarge, index, Operand(at)); |
| 5617 | |
| 5618 | DCHECK(Smi::FromInt(0) == 0); |
| 5619 | Check(ge, kIndexIsNegative, index, Operand(zero_reg)); |
| 5620 | |
| 5621 | SmiUntag(index, index); |
| 5622 | } |
| 5623 | |
| 5624 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5625 | void MacroAssembler::PrepareCallCFunction(int num_reg_arguments, |
| 5626 | int num_double_arguments, |
| 5627 | Register scratch) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5628 | int frame_alignment = ActivationFrameAlignment(); |
| 5629 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5630 | // Up to four simple arguments are passed in registers a0..a3. |
| 5631 | // Those four arguments must have reserved argument slots on the stack for |
| 5632 | // mips, even though those argument slots are not normally used. |
| 5633 | // Remaining arguments are pushed on the stack, above (higher address than) |
| 5634 | // the argument slots. |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5635 | int stack_passed_arguments = CalculateStackPassedWords( |
| 5636 | num_reg_arguments, num_double_arguments); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5637 | if (frame_alignment > kPointerSize) { |
| 5638 | // Make stack end at alignment and make room for num_arguments - 4 words |
| 5639 | // and the original value of sp. |
| 5640 | mov(scratch, sp); |
| 5641 | Subu(sp, sp, Operand((stack_passed_arguments + 1) * kPointerSize)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5642 | DCHECK(base::bits::IsPowerOfTwo32(frame_alignment)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5643 | And(sp, sp, Operand(-frame_alignment)); |
| 5644 | sw(scratch, MemOperand(sp, stack_passed_arguments * kPointerSize)); |
| 5645 | } else { |
| 5646 | Subu(sp, sp, Operand(stack_passed_arguments * kPointerSize)); |
| 5647 | } |
| 5648 | } |
| 5649 | |
| 5650 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5651 | void MacroAssembler::PrepareCallCFunction(int num_reg_arguments, |
| 5652 | Register scratch) { |
| 5653 | PrepareCallCFunction(num_reg_arguments, 0, scratch); |
| 5654 | } |
| 5655 | |
| 5656 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5657 | void MacroAssembler::CallCFunction(ExternalReference function, |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5658 | int num_reg_arguments, |
| 5659 | int num_double_arguments) { |
| 5660 | li(t8, Operand(function)); |
| 5661 | CallCFunctionHelper(t8, num_reg_arguments, num_double_arguments); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5662 | } |
| 5663 | |
| 5664 | |
| 5665 | void MacroAssembler::CallCFunction(Register function, |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5666 | int num_reg_arguments, |
| 5667 | int num_double_arguments) { |
| 5668 | CallCFunctionHelper(function, num_reg_arguments, num_double_arguments); |
| 5669 | } |
| 5670 | |
| 5671 | |
| 5672 | void MacroAssembler::CallCFunction(ExternalReference function, |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5673 | int num_arguments) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5674 | CallCFunction(function, num_arguments, 0); |
| 5675 | } |
| 5676 | |
| 5677 | |
| 5678 | void MacroAssembler::CallCFunction(Register function, |
| 5679 | int num_arguments) { |
| 5680 | CallCFunction(function, num_arguments, 0); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5681 | } |
| 5682 | |
| 5683 | |
| 5684 | void MacroAssembler::CallCFunctionHelper(Register function, |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5685 | int num_reg_arguments, |
| 5686 | int num_double_arguments) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5687 | DCHECK(has_frame()); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5688 | // Make sure that the stack is aligned before calling a C function unless |
| 5689 | // running in the simulator. The simulator has its own alignment check which |
| 5690 | // provides more information. |
| 5691 | // The argument stots are presumed to have been set up by |
| 5692 | // PrepareCallCFunction. The C function must be called via t9, for mips ABI. |
| 5693 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5694 | #if V8_HOST_ARCH_MIPS |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5695 | if (emit_debug_code()) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5696 | int frame_alignment = base::OS::ActivationFrameAlignment(); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5697 | int frame_alignment_mask = frame_alignment - 1; |
| 5698 | if (frame_alignment > kPointerSize) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5699 | DCHECK(base::bits::IsPowerOfTwo32(frame_alignment)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5700 | Label alignment_as_expected; |
| 5701 | And(at, sp, Operand(frame_alignment_mask)); |
| 5702 | Branch(&alignment_as_expected, eq, at, Operand(zero_reg)); |
| 5703 | // Don't use Check here, as it will call Runtime_Abort possibly |
| 5704 | // re-entering here. |
| 5705 | stop("Unexpected alignment in CallCFunction"); |
| 5706 | bind(&alignment_as_expected); |
| 5707 | } |
| 5708 | } |
| 5709 | #endif // V8_HOST_ARCH_MIPS |
| 5710 | |
| 5711 | // Just call directly. The function called cannot cause a GC, or |
| 5712 | // allow preemption, so the return address in the link register |
| 5713 | // stays correct. |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5714 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5715 | if (!function.is(t9)) { |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 5716 | mov(t9, function); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5717 | function = t9; |
| 5718 | } |
| 5719 | |
| 5720 | Call(function); |
| 5721 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5722 | int stack_passed_arguments = CalculateStackPassedWords( |
| 5723 | num_reg_arguments, num_double_arguments); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5724 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5725 | if (base::OS::ActivationFrameAlignment() > kPointerSize) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5726 | lw(sp, MemOperand(sp, stack_passed_arguments * kPointerSize)); |
| 5727 | } else { |
| 5728 | Addu(sp, sp, Operand(stack_passed_arguments * sizeof(kPointerSize))); |
| 5729 | } |
| 5730 | } |
| 5731 | |
| 5732 | |
| 5733 | #undef BRANCH_ARGS_CHECK |
| 5734 | |
| 5735 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5736 | void MacroAssembler::PatchRelocatedValue(Register li_location, |
| 5737 | Register scratch, |
| 5738 | Register new_value) { |
| 5739 | lw(scratch, MemOperand(li_location)); |
| 5740 | // At this point scratch is a lui(at, ...) instruction. |
| 5741 | if (emit_debug_code()) { |
| 5742 | And(scratch, scratch, kOpcodeMask); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5743 | Check(eq, kTheInstructionToPatchShouldBeALui, |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5744 | scratch, Operand(LUI)); |
| 5745 | lw(scratch, MemOperand(li_location)); |
| 5746 | } |
| 5747 | srl(t9, new_value, kImm16Bits); |
| 5748 | Ins(scratch, t9, 0, kImm16Bits); |
| 5749 | sw(scratch, MemOperand(li_location)); |
| 5750 | |
| 5751 | lw(scratch, MemOperand(li_location, kInstrSize)); |
| 5752 | // scratch is now ori(at, ...). |
| 5753 | if (emit_debug_code()) { |
| 5754 | And(scratch, scratch, kOpcodeMask); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5755 | Check(eq, kTheInstructionToPatchShouldBeAnOri, |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5756 | scratch, Operand(ORI)); |
| 5757 | lw(scratch, MemOperand(li_location, kInstrSize)); |
| 5758 | } |
| 5759 | Ins(scratch, new_value, 0, kImm16Bits); |
| 5760 | sw(scratch, MemOperand(li_location, kInstrSize)); |
| 5761 | |
| 5762 | // Update the I-cache so the new lui and ori can be executed. |
| 5763 | FlushICache(li_location, 2); |
| 5764 | } |
| 5765 | |
| 5766 | void MacroAssembler::GetRelocatedValue(Register li_location, |
| 5767 | Register value, |
| 5768 | Register scratch) { |
| 5769 | lw(value, MemOperand(li_location)); |
| 5770 | if (emit_debug_code()) { |
| 5771 | And(value, value, kOpcodeMask); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5772 | Check(eq, kTheInstructionShouldBeALui, |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5773 | value, Operand(LUI)); |
| 5774 | lw(value, MemOperand(li_location)); |
| 5775 | } |
| 5776 | |
| 5777 | // value now holds a lui instruction. Extract the immediate. |
| 5778 | sll(value, value, kImm16Bits); |
| 5779 | |
| 5780 | lw(scratch, MemOperand(li_location, kInstrSize)); |
| 5781 | if (emit_debug_code()) { |
| 5782 | And(scratch, scratch, kOpcodeMask); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5783 | Check(eq, kTheInstructionShouldBeAnOri, |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5784 | scratch, Operand(ORI)); |
| 5785 | lw(scratch, MemOperand(li_location, kInstrSize)); |
| 5786 | } |
| 5787 | // "scratch" now holds an ori instruction. Extract the immediate. |
| 5788 | andi(scratch, scratch, kImm16Mask); |
| 5789 | |
| 5790 | // Merge the results. |
| 5791 | or_(value, value, scratch); |
| 5792 | } |
| 5793 | |
| 5794 | |
| 5795 | void MacroAssembler::CheckPageFlag( |
| 5796 | Register object, |
| 5797 | Register scratch, |
| 5798 | int mask, |
| 5799 | Condition cc, |
| 5800 | Label* condition_met) { |
| 5801 | And(scratch, object, Operand(~Page::kPageAlignmentMask)); |
| 5802 | lw(scratch, MemOperand(scratch, MemoryChunk::kFlagsOffset)); |
| 5803 | And(scratch, scratch, Operand(mask)); |
| 5804 | Branch(condition_met, cc, scratch, Operand(zero_reg)); |
| 5805 | } |
| 5806 | |
| 5807 | |
| 5808 | void MacroAssembler::JumpIfBlack(Register object, |
| 5809 | Register scratch0, |
| 5810 | Register scratch1, |
| 5811 | Label* on_black) { |
| 5812 | HasColor(object, scratch0, scratch1, on_black, 1, 0); // kBlackBitPattern. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5813 | DCHECK(strcmp(Marking::kBlackBitPattern, "10") == 0); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5814 | } |
| 5815 | |
| 5816 | |
| 5817 | void MacroAssembler::HasColor(Register object, |
| 5818 | Register bitmap_scratch, |
| 5819 | Register mask_scratch, |
| 5820 | Label* has_color, |
| 5821 | int first_bit, |
| 5822 | int second_bit) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5823 | DCHECK(!AreAliased(object, bitmap_scratch, mask_scratch, t8)); |
| 5824 | DCHECK(!AreAliased(object, bitmap_scratch, mask_scratch, t9)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5825 | |
| 5826 | GetMarkBits(object, bitmap_scratch, mask_scratch); |
| 5827 | |
| 5828 | Label other_color, word_boundary; |
| 5829 | lw(t9, MemOperand(bitmap_scratch, MemoryChunk::kHeaderSize)); |
| 5830 | And(t8, t9, Operand(mask_scratch)); |
| 5831 | Branch(&other_color, first_bit == 1 ? eq : ne, t8, Operand(zero_reg)); |
| 5832 | // Shift left 1 by adding. |
| 5833 | Addu(mask_scratch, mask_scratch, Operand(mask_scratch)); |
| 5834 | Branch(&word_boundary, eq, mask_scratch, Operand(zero_reg)); |
| 5835 | And(t8, t9, Operand(mask_scratch)); |
| 5836 | Branch(has_color, second_bit == 1 ? ne : eq, t8, Operand(zero_reg)); |
| 5837 | jmp(&other_color); |
| 5838 | |
| 5839 | bind(&word_boundary); |
| 5840 | lw(t9, MemOperand(bitmap_scratch, MemoryChunk::kHeaderSize + kPointerSize)); |
| 5841 | And(t9, t9, Operand(1)); |
| 5842 | Branch(has_color, second_bit == 1 ? ne : eq, t9, Operand(zero_reg)); |
| 5843 | bind(&other_color); |
| 5844 | } |
| 5845 | |
| 5846 | |
| 5847 | // Detect some, but not all, common pointer-free objects. This is used by the |
| 5848 | // incremental write barrier which doesn't care about oddballs (they are always |
| 5849 | // marked black immediately so this code is not hit). |
| 5850 | void MacroAssembler::JumpIfDataObject(Register value, |
| 5851 | Register scratch, |
| 5852 | Label* not_data_object) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5853 | DCHECK(!AreAliased(value, scratch, t8, no_reg)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5854 | Label is_data_object; |
| 5855 | lw(scratch, FieldMemOperand(value, HeapObject::kMapOffset)); |
| 5856 | LoadRoot(t8, Heap::kHeapNumberMapRootIndex); |
| 5857 | Branch(&is_data_object, eq, t8, Operand(scratch)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5858 | DCHECK(kIsIndirectStringTag == 1 && kIsIndirectStringMask == 1); |
| 5859 | DCHECK(kNotStringTag == 0x80 && kIsNotStringMask == 0x80); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5860 | // If it's a string and it's not a cons string then it's an object containing |
| 5861 | // no GC pointers. |
| 5862 | lbu(scratch, FieldMemOperand(scratch, Map::kInstanceTypeOffset)); |
| 5863 | And(t8, scratch, Operand(kIsIndirectStringMask | kIsNotStringMask)); |
| 5864 | Branch(not_data_object, ne, t8, Operand(zero_reg)); |
| 5865 | bind(&is_data_object); |
| 5866 | } |
| 5867 | |
| 5868 | |
| 5869 | void MacroAssembler::GetMarkBits(Register addr_reg, |
| 5870 | Register bitmap_reg, |
| 5871 | Register mask_reg) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5872 | DCHECK(!AreAliased(addr_reg, bitmap_reg, mask_reg, no_reg)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5873 | And(bitmap_reg, addr_reg, Operand(~Page::kPageAlignmentMask)); |
| 5874 | Ext(mask_reg, addr_reg, kPointerSizeLog2, Bitmap::kBitsPerCellLog2); |
| 5875 | const int kLowBits = kPointerSizeLog2 + Bitmap::kBitsPerCellLog2; |
| 5876 | Ext(t8, addr_reg, kLowBits, kPageSizeBits - kLowBits); |
| 5877 | sll(t8, t8, kPointerSizeLog2); |
| 5878 | Addu(bitmap_reg, bitmap_reg, t8); |
| 5879 | li(t8, Operand(1)); |
| 5880 | sllv(mask_reg, t8, mask_reg); |
| 5881 | } |
| 5882 | |
| 5883 | |
| 5884 | void MacroAssembler::EnsureNotWhite( |
| 5885 | Register value, |
| 5886 | Register bitmap_scratch, |
| 5887 | Register mask_scratch, |
| 5888 | Register load_scratch, |
| 5889 | Label* value_is_white_and_not_data) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5890 | DCHECK(!AreAliased(value, bitmap_scratch, mask_scratch, t8)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5891 | GetMarkBits(value, bitmap_scratch, mask_scratch); |
| 5892 | |
| 5893 | // 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] | 5894 | DCHECK(strcmp(Marking::kWhiteBitPattern, "00") == 0); |
| 5895 | DCHECK(strcmp(Marking::kBlackBitPattern, "10") == 0); |
| 5896 | DCHECK(strcmp(Marking::kGreyBitPattern, "11") == 0); |
| 5897 | DCHECK(strcmp(Marking::kImpossibleBitPattern, "01") == 0); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5898 | |
| 5899 | Label done; |
| 5900 | |
| 5901 | // Since both black and grey have a 1 in the first position and white does |
| 5902 | // not have a 1 there we only need to check one bit. |
| 5903 | lw(load_scratch, MemOperand(bitmap_scratch, MemoryChunk::kHeaderSize)); |
| 5904 | And(t8, mask_scratch, load_scratch); |
| 5905 | Branch(&done, ne, t8, Operand(zero_reg)); |
| 5906 | |
| 5907 | if (emit_debug_code()) { |
| 5908 | // Check for impossible bit pattern. |
| 5909 | Label ok; |
| 5910 | // sll may overflow, making the check conservative. |
| 5911 | sll(t8, mask_scratch, 1); |
| 5912 | And(t8, load_scratch, t8); |
| 5913 | Branch(&ok, eq, t8, Operand(zero_reg)); |
| 5914 | stop("Impossible marking bit pattern"); |
| 5915 | bind(&ok); |
| 5916 | } |
| 5917 | |
| 5918 | // Value is white. We check whether it is data that doesn't need scanning. |
| 5919 | // Currently only checks for HeapNumber and non-cons strings. |
| 5920 | Register map = load_scratch; // Holds map while checking type. |
| 5921 | Register length = load_scratch; // Holds length of object after testing type. |
| 5922 | Label is_data_object; |
| 5923 | |
| 5924 | // Check for heap-number |
| 5925 | lw(map, FieldMemOperand(value, HeapObject::kMapOffset)); |
| 5926 | LoadRoot(t8, Heap::kHeapNumberMapRootIndex); |
| 5927 | { |
| 5928 | Label skip; |
| 5929 | Branch(&skip, ne, t8, Operand(map)); |
| 5930 | li(length, HeapNumber::kSize); |
| 5931 | Branch(&is_data_object); |
| 5932 | bind(&skip); |
| 5933 | } |
| 5934 | |
| 5935 | // Check for strings. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5936 | DCHECK(kIsIndirectStringTag == 1 && kIsIndirectStringMask == 1); |
| 5937 | DCHECK(kNotStringTag == 0x80 && kIsNotStringMask == 0x80); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5938 | // If it's a string and it's not a cons string then it's an object containing |
| 5939 | // no GC pointers. |
| 5940 | Register instance_type = load_scratch; |
| 5941 | lbu(instance_type, FieldMemOperand(map, Map::kInstanceTypeOffset)); |
| 5942 | And(t8, instance_type, Operand(kIsIndirectStringMask | kIsNotStringMask)); |
| 5943 | Branch(value_is_white_and_not_data, ne, t8, Operand(zero_reg)); |
| 5944 | // It's a non-indirect (non-cons and non-slice) string. |
| 5945 | // If it's external, the length is just ExternalString::kSize. |
| 5946 | // Otherwise it's String::kHeaderSize + string->length() * (1 or 2). |
| 5947 | // External strings are the only ones with the kExternalStringTag bit |
| 5948 | // set. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5949 | DCHECK_EQ(0, kSeqStringTag & kExternalStringTag); |
| 5950 | DCHECK_EQ(0, kConsStringTag & kExternalStringTag); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5951 | And(t8, instance_type, Operand(kExternalStringTag)); |
| 5952 | { |
| 5953 | Label skip; |
| 5954 | Branch(&skip, eq, t8, Operand(zero_reg)); |
| 5955 | li(length, ExternalString::kSize); |
| 5956 | Branch(&is_data_object); |
| 5957 | bind(&skip); |
| 5958 | } |
| 5959 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5960 | // Sequential string, either Latin1 or UC16. |
| 5961 | // For Latin1 (char-size of 1) we shift the smi tag away to get the length. |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5962 | // For UC16 (char-size of 2) we just leave the smi tag in place, thereby |
| 5963 | // getting the length multiplied by 2. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5964 | DCHECK(kOneByteStringTag == 4 && kStringEncodingMask == 4); |
| 5965 | DCHECK(kSmiTag == 0 && kSmiTagSize == 1); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5966 | lw(t9, FieldMemOperand(value, String::kLengthOffset)); |
| 5967 | And(t8, instance_type, Operand(kStringEncodingMask)); |
| 5968 | { |
| 5969 | Label skip; |
| 5970 | Branch(&skip, eq, t8, Operand(zero_reg)); |
| 5971 | srl(t9, t9, 1); |
| 5972 | bind(&skip); |
| 5973 | } |
| 5974 | Addu(length, t9, Operand(SeqString::kHeaderSize + kObjectAlignmentMask)); |
| 5975 | And(length, length, Operand(~kObjectAlignmentMask)); |
| 5976 | |
| 5977 | bind(&is_data_object); |
| 5978 | // Value is a data object, and it is white. Mark it black. Since we know |
| 5979 | // that the object is white we can make it black by flipping one bit. |
| 5980 | lw(t8, MemOperand(bitmap_scratch, MemoryChunk::kHeaderSize)); |
| 5981 | Or(t8, t8, Operand(mask_scratch)); |
| 5982 | sw(t8, MemOperand(bitmap_scratch, MemoryChunk::kHeaderSize)); |
| 5983 | |
| 5984 | And(bitmap_scratch, bitmap_scratch, Operand(~Page::kPageAlignmentMask)); |
| 5985 | lw(t8, MemOperand(bitmap_scratch, MemoryChunk::kLiveBytesOffset)); |
| 5986 | Addu(t8, t8, Operand(length)); |
| 5987 | sw(t8, MemOperand(bitmap_scratch, MemoryChunk::kLiveBytesOffset)); |
| 5988 | |
| 5989 | bind(&done); |
| 5990 | } |
| 5991 | |
| 5992 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 5993 | void MacroAssembler::LoadInstanceDescriptors(Register map, |
| 5994 | Register descriptors) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5995 | lw(descriptors, FieldMemOperand(map, Map::kDescriptorsOffset)); |
| 5996 | } |
| 5997 | |
| 5998 | |
| 5999 | void MacroAssembler::NumberOfOwnDescriptors(Register dst, Register map) { |
| 6000 | lw(dst, FieldMemOperand(map, Map::kBitField3Offset)); |
| 6001 | DecodeField<Map::NumberOfOwnDescriptorsBits>(dst); |
| 6002 | } |
| 6003 | |
| 6004 | |
| 6005 | void MacroAssembler::EnumLength(Register dst, Register map) { |
| 6006 | STATIC_ASSERT(Map::EnumLengthBits::kShift == 0); |
| 6007 | lw(dst, FieldMemOperand(map, Map::kBitField3Offset)); |
| 6008 | And(dst, dst, Operand(Map::EnumLengthBits::kMask)); |
| 6009 | SmiTag(dst); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 6010 | } |
| 6011 | |
| 6012 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 6013 | void MacroAssembler::CheckEnumCache(Register null_value, Label* call_runtime) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 6014 | Register empty_fixed_array_value = t2; |
| 6015 | LoadRoot(empty_fixed_array_value, Heap::kEmptyFixedArrayRootIndex); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 6016 | Label next, start; |
| 6017 | mov(a2, a0); |
| 6018 | |
| 6019 | // Check if the enum length field is properly initialized, indicating that |
| 6020 | // there is an enum cache. |
| 6021 | lw(a1, FieldMemOperand(a2, HeapObject::kMapOffset)); |
| 6022 | |
| 6023 | EnumLength(a3, a1); |
| 6024 | Branch( |
| 6025 | call_runtime, eq, a3, Operand(Smi::FromInt(kInvalidEnumCacheSentinel))); |
| 6026 | |
| 6027 | jmp(&start); |
| 6028 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 6029 | bind(&next); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 6030 | lw(a1, FieldMemOperand(a2, HeapObject::kMapOffset)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 6031 | |
| 6032 | // For all objects but the receiver, check that the cache is empty. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 6033 | EnumLength(a3, a1); |
| 6034 | Branch(call_runtime, ne, a3, Operand(Smi::FromInt(0))); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 6035 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 6036 | bind(&start); |
| 6037 | |
| 6038 | // Check that there are no elements. Register a2 contains the current JS |
| 6039 | // object we've reached through the prototype chain. |
| 6040 | Label no_elements; |
| 6041 | lw(a2, FieldMemOperand(a2, JSObject::kElementsOffset)); |
| 6042 | Branch(&no_elements, eq, a2, Operand(empty_fixed_array_value)); |
| 6043 | |
| 6044 | // Second chance, the object may be using the empty slow element dictionary. |
| 6045 | LoadRoot(at, Heap::kEmptySlowElementDictionaryRootIndex); |
| 6046 | Branch(call_runtime, ne, a2, Operand(at)); |
| 6047 | |
| 6048 | bind(&no_elements); |
| 6049 | lw(a2, FieldMemOperand(a1, Map::kPrototypeOffset)); |
| 6050 | Branch(&next, ne, a2, Operand(null_value)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 6051 | } |
| 6052 | |
| 6053 | |
| 6054 | void MacroAssembler::ClampUint8(Register output_reg, Register input_reg) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 6055 | DCHECK(!output_reg.is(input_reg)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 6056 | Label done; |
| 6057 | li(output_reg, Operand(255)); |
| 6058 | // Normal branch: nop in delay slot. |
| 6059 | Branch(&done, gt, input_reg, Operand(output_reg)); |
| 6060 | // Use delay slot in this branch. |
| 6061 | Branch(USE_DELAY_SLOT, &done, lt, input_reg, Operand(zero_reg)); |
| 6062 | mov(output_reg, zero_reg); // In delay slot. |
| 6063 | mov(output_reg, input_reg); // Value is in range 0..255. |
| 6064 | bind(&done); |
| 6065 | } |
| 6066 | |
| 6067 | |
| 6068 | void MacroAssembler::ClampDoubleToUint8(Register result_reg, |
| 6069 | DoubleRegister input_reg, |
| 6070 | DoubleRegister temp_double_reg) { |
| 6071 | Label above_zero; |
| 6072 | Label done; |
| 6073 | Label in_bounds; |
| 6074 | |
| 6075 | Move(temp_double_reg, 0.0); |
| 6076 | BranchF(&above_zero, NULL, gt, input_reg, temp_double_reg); |
| 6077 | |
| 6078 | // Double value is less than zero, NaN or Inf, return 0. |
| 6079 | mov(result_reg, zero_reg); |
| 6080 | Branch(&done); |
| 6081 | |
| 6082 | // Double value is >= 255, return 255. |
| 6083 | bind(&above_zero); |
| 6084 | Move(temp_double_reg, 255.0); |
| 6085 | BranchF(&in_bounds, NULL, le, input_reg, temp_double_reg); |
| 6086 | li(result_reg, Operand(255)); |
| 6087 | Branch(&done); |
| 6088 | |
| 6089 | // In 0-255 range, round and truncate. |
| 6090 | bind(&in_bounds); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 6091 | cvt_w_d(temp_double_reg, input_reg); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 6092 | mfc1(result_reg, temp_double_reg); |
| 6093 | bind(&done); |
| 6094 | } |
| 6095 | |
| 6096 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 6097 | void MacroAssembler::TestJSArrayForAllocationMemento( |
| 6098 | Register receiver_reg, |
| 6099 | Register scratch_reg, |
| 6100 | Label* no_memento_found, |
| 6101 | Condition cond, |
| 6102 | Label* allocation_memento_present) { |
| 6103 | ExternalReference new_space_start = |
| 6104 | ExternalReference::new_space_start(isolate()); |
| 6105 | ExternalReference new_space_allocation_top = |
| 6106 | ExternalReference::new_space_allocation_top_address(isolate()); |
| 6107 | Addu(scratch_reg, receiver_reg, |
| 6108 | Operand(JSArray::kSize + AllocationMemento::kSize - kHeapObjectTag)); |
| 6109 | Branch(no_memento_found, lt, scratch_reg, Operand(new_space_start)); |
| 6110 | li(at, Operand(new_space_allocation_top)); |
| 6111 | lw(at, MemOperand(at)); |
| 6112 | Branch(no_memento_found, gt, scratch_reg, Operand(at)); |
| 6113 | lw(scratch_reg, MemOperand(scratch_reg, -AllocationMemento::kSize)); |
| 6114 | if (allocation_memento_present) { |
| 6115 | Branch(allocation_memento_present, cond, scratch_reg, |
| 6116 | Operand(isolate()->factory()->allocation_memento_map())); |
| 6117 | } |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 6118 | } |
| 6119 | |
| 6120 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 6121 | Register GetRegisterThatIsNotOneOf(Register reg1, |
| 6122 | Register reg2, |
| 6123 | Register reg3, |
| 6124 | Register reg4, |
| 6125 | Register reg5, |
| 6126 | Register reg6) { |
| 6127 | RegList regs = 0; |
| 6128 | if (reg1.is_valid()) regs |= reg1.bit(); |
| 6129 | if (reg2.is_valid()) regs |= reg2.bit(); |
| 6130 | if (reg3.is_valid()) regs |= reg3.bit(); |
| 6131 | if (reg4.is_valid()) regs |= reg4.bit(); |
| 6132 | if (reg5.is_valid()) regs |= reg5.bit(); |
| 6133 | if (reg6.is_valid()) regs |= reg6.bit(); |
| 6134 | |
| 6135 | for (int i = 0; i < Register::NumAllocatableRegisters(); i++) { |
| 6136 | Register candidate = Register::FromAllocationIndex(i); |
| 6137 | if (regs & candidate.bit()) continue; |
| 6138 | return candidate; |
| 6139 | } |
| 6140 | UNREACHABLE(); |
| 6141 | return no_reg; |
| 6142 | } |
| 6143 | |
| 6144 | |
| 6145 | void MacroAssembler::JumpIfDictionaryInPrototypeChain( |
| 6146 | Register object, |
| 6147 | Register scratch0, |
| 6148 | Register scratch1, |
| 6149 | Label* found) { |
| 6150 | DCHECK(!scratch1.is(scratch0)); |
| 6151 | Factory* factory = isolate()->factory(); |
| 6152 | Register current = scratch0; |
| 6153 | Label loop_again; |
| 6154 | |
| 6155 | // Scratch contained elements pointer. |
| 6156 | Move(current, object); |
| 6157 | |
| 6158 | // Loop based on the map going up the prototype chain. |
| 6159 | bind(&loop_again); |
| 6160 | lw(current, FieldMemOperand(current, HeapObject::kMapOffset)); |
| 6161 | lb(scratch1, FieldMemOperand(current, Map::kBitField2Offset)); |
| 6162 | DecodeField<Map::ElementsKindBits>(scratch1); |
| 6163 | Branch(found, eq, scratch1, Operand(DICTIONARY_ELEMENTS)); |
| 6164 | lw(current, FieldMemOperand(current, Map::kPrototypeOffset)); |
| 6165 | Branch(&loop_again, ne, current, Operand(factory->null_value())); |
| 6166 | } |
| 6167 | |
| 6168 | |
| 6169 | bool AreAliased(Register reg1, |
| 6170 | Register reg2, |
| 6171 | Register reg3, |
| 6172 | Register reg4, |
| 6173 | Register reg5, |
| 6174 | Register reg6, |
| 6175 | Register reg7, |
| 6176 | Register reg8) { |
| 6177 | int n_of_valid_regs = reg1.is_valid() + reg2.is_valid() + |
| 6178 | reg3.is_valid() + reg4.is_valid() + reg5.is_valid() + reg6.is_valid() + |
| 6179 | reg7.is_valid() + reg8.is_valid(); |
| 6180 | |
| 6181 | RegList regs = 0; |
| 6182 | if (reg1.is_valid()) regs |= reg1.bit(); |
| 6183 | if (reg2.is_valid()) regs |= reg2.bit(); |
| 6184 | if (reg3.is_valid()) regs |= reg3.bit(); |
| 6185 | if (reg4.is_valid()) regs |= reg4.bit(); |
| 6186 | if (reg5.is_valid()) regs |= reg5.bit(); |
| 6187 | if (reg6.is_valid()) regs |= reg6.bit(); |
| 6188 | if (reg7.is_valid()) regs |= reg7.bit(); |
| 6189 | if (reg8.is_valid()) regs |= reg8.bit(); |
| 6190 | int n_of_non_aliasing_regs = NumRegs(regs); |
| 6191 | |
| 6192 | return n_of_valid_regs != n_of_non_aliasing_regs; |
| 6193 | } |
| 6194 | |
| 6195 | |
| 6196 | CodePatcher::CodePatcher(byte* address, |
| 6197 | int instructions, |
| 6198 | FlushICache flush_cache) |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 6199 | : address_(address), |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 6200 | size_(instructions * Assembler::kInstrSize), |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 6201 | masm_(NULL, address, size_ + Assembler::kGap), |
| 6202 | flush_cache_(flush_cache) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 6203 | // Create a new macro assembler pointing to the address of the code to patch. |
| 6204 | // The size is adjusted with kGap on order for the assembler to generate size |
| 6205 | // bytes of instructions without failing with buffer size constraints. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 6206 | DCHECK(masm_.reloc_info_writer.pos() == address_ + size_ + Assembler::kGap); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 6207 | } |
| 6208 | |
| 6209 | |
| 6210 | CodePatcher::~CodePatcher() { |
| 6211 | // Indicate that code has changed. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 6212 | if (flush_cache_ == FLUSH) { |
| 6213 | CpuFeatures::FlushICache(address_, size_); |
| 6214 | } |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 6215 | |
| 6216 | // Check that the code was patched as expected. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 6217 | DCHECK(masm_.pc_ == address_ + size_); |
| 6218 | DCHECK(masm_.reloc_info_writer.pos() == address_ + size_ + Assembler::kGap); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 6219 | } |
| 6220 | |
| 6221 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 6222 | void CodePatcher::Emit(Instr instr) { |
| 6223 | masm()->emit(instr); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 6224 | } |
| 6225 | |
| 6226 | |
| 6227 | void CodePatcher::Emit(Address addr) { |
| 6228 | masm()->emit(reinterpret_cast<Instr>(addr)); |
| 6229 | } |
| 6230 | |
| 6231 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 6232 | void CodePatcher::ChangeBranchCondition(Condition cond) { |
| 6233 | Instr instr = Assembler::instr_at(masm_.pc_); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 6234 | DCHECK(Assembler::IsBranch(instr)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 6235 | uint32_t opcode = Assembler::GetOpcodeField(instr); |
| 6236 | // Currently only the 'eq' and 'ne' cond values are supported and the simple |
| 6237 | // branch instructions (with opcode being the branch type). |
| 6238 | // There are some special cases (see Assembler::IsBranch()) so extending this |
| 6239 | // would be tricky. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 6240 | DCHECK(opcode == BEQ || |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 6241 | opcode == BNE || |
| 6242 | opcode == BLEZ || |
| 6243 | opcode == BGTZ || |
| 6244 | opcode == BEQL || |
| 6245 | opcode == BNEL || |
| 6246 | opcode == BLEZL || |
| 6247 | opcode == BGTZL); |
| 6248 | opcode = (cond == eq) ? BEQ : BNE; |
| 6249 | instr = (instr & ~kOpcodeMask) | opcode; |
| 6250 | masm_.emit(instr); |
| 6251 | } |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 6252 | |
| 6253 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 6254 | void MacroAssembler::TruncatingDiv(Register result, |
| 6255 | Register dividend, |
| 6256 | int32_t divisor) { |
| 6257 | DCHECK(!dividend.is(result)); |
| 6258 | DCHECK(!dividend.is(at)); |
| 6259 | DCHECK(!result.is(at)); |
| 6260 | base::MagicNumbersForDivision<uint32_t> mag = |
| 6261 | base::SignedDivisionByConstant(static_cast<uint32_t>(divisor)); |
| 6262 | li(at, Operand(mag.multiplier)); |
| 6263 | Mulh(result, dividend, Operand(at)); |
| 6264 | bool neg = (mag.multiplier & (static_cast<uint32_t>(1) << 31)) != 0; |
| 6265 | if (divisor > 0 && neg) { |
| 6266 | Addu(result, result, Operand(dividend)); |
| 6267 | } |
| 6268 | if (divisor < 0 && !neg && mag.multiplier > 0) { |
| 6269 | Subu(result, result, Operand(dividend)); |
| 6270 | } |
| 6271 | if (mag.shift > 0) sra(result, result, mag.shift); |
| 6272 | srl(at, dividend, 31); |
| 6273 | Addu(result, result, Operand(at)); |
| 6274 | } |
| 6275 | |
| 6276 | |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 6277 | } } // namespace v8::internal |
| 6278 | |
Leon Clarke | f7060e2 | 2010-06-03 12:02:55 +0100 | [diff] [blame] | 6279 | #endif // V8_TARGET_ARCH_MIPS |