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| 1 // Copyright 2010 the V8 project authors. All rights reserved. | 1 // Copyright 2010 the V8 project authors. All rights reserved. |
| 2 // Redistribution and use in source and binary forms, with or without | 2 // Redistribution and use in source and binary forms, with or without |
| 3 // modification, are permitted provided that the following conditions are | 3 // modification, are permitted provided that the following conditions are |
| 4 // met: | 4 // met: |
| 5 // | 5 // |
| 6 // * Redistributions of source code must retain the above copyright | 6 // * Redistributions of source code must retain the above copyright |
| 7 // notice, this list of conditions and the following disclaimer. | 7 // notice, this list of conditions and the following disclaimer. |
| 8 // * Redistributions in binary form must reproduce the above | 8 // * Redistributions in binary form must reproduce the above |
| 9 // copyright notice, this list of conditions and the following | 9 // copyright notice, this list of conditions and the following |
| 10 // disclaimer in the documentation and/or other materials provided | 10 // disclaimer in the documentation and/or other materials provided |
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| 311 usat(dst, satpos, src, cond); | 311 usat(dst, satpos, src, cond); |
| 312 } | 312 } |
| 313 } | 313 } |
| 314 | 314 |
| 315 | 315 |
| 316 void MacroAssembler::SmiJumpTable(Register index, Vector<Label*> targets) { | 316 void MacroAssembler::SmiJumpTable(Register index, Vector<Label*> targets) { |
| 317 // Empty the const pool. | 317 // Empty the const pool. |
| 318 CheckConstPool(true, true); | 318 CheckConstPool(true, true); |
| 319 add(pc, pc, Operand(index, | 319 add(pc, pc, Operand(index, |
| 320 LSL, | 320 LSL, |
| 321 assembler::arm::Instr::kInstrSizeLog2 - kSmiTagSize)); | 321 Instruction::kInstrSizeLog2 - kSmiTagSize)); |
| 322 BlockConstPoolBefore(pc_offset() + (targets.length() + 1) * kInstrSize); | 322 BlockConstPoolBefore(pc_offset() + (targets.length() + 1) * kInstrSize); |
| 323 nop(); // Jump table alignment. | 323 nop(); // Jump table alignment. |
| 324 for (int i = 0; i < targets.length(); i++) { | 324 for (int i = 0; i < targets.length(); i++) { |
| 325 b(targets[i]); | 325 b(targets[i]); |
| 326 } | 326 } |
| 327 } | 327 } |
| 328 | 328 |
| 329 | 329 |
| 330 void MacroAssembler::LoadRoot(Register destination, | 330 void MacroAssembler::LoadRoot(Register destination, |
| 331 Heap::RootListIndex index, | 331 Heap::RootListIndex index, |
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| 362 // Mark region dirty. | 362 // Mark region dirty. |
| 363 ldr(scratch, MemOperand(object, Page::kDirtyFlagOffset)); | 363 ldr(scratch, MemOperand(object, Page::kDirtyFlagOffset)); |
| 364 mov(ip, Operand(1)); | 364 mov(ip, Operand(1)); |
| 365 orr(scratch, scratch, Operand(ip, LSL, address)); | 365 orr(scratch, scratch, Operand(ip, LSL, address)); |
| 366 str(scratch, MemOperand(object, Page::kDirtyFlagOffset)); | 366 str(scratch, MemOperand(object, Page::kDirtyFlagOffset)); |
| 367 } | 367 } |
| 368 | 368 |
| 369 | 369 |
| 370 void MacroAssembler::InNewSpace(Register object, | 370 void MacroAssembler::InNewSpace(Register object, |
| 371 Register scratch, | 371 Register scratch, |
| 372 Condition cc, | 372 Condition cond, |
| 373 Label* branch) { | 373 Label* branch) { |
| 374 ASSERT(cc == eq || cc == ne); | 374 ASSERT(cond == eq || cond == ne); |
| 375 and_(scratch, object, Operand(ExternalReference::new_space_mask())); | 375 and_(scratch, object, Operand(ExternalReference::new_space_mask())); |
| 376 cmp(scratch, Operand(ExternalReference::new_space_start())); | 376 cmp(scratch, Operand(ExternalReference::new_space_start())); |
| 377 b(cc, branch); | 377 b(cond, branch); |
| 378 } | 378 } |
| 379 | 379 |
| 380 | 380 |
| 381 // Will clobber 4 registers: object, offset, scratch, ip. The | 381 // Will clobber 4 registers: object, offset, scratch, ip. The |
| 382 // register 'object' contains a heap object pointer. The heap object | 382 // register 'object' contains a heap object pointer. The heap object |
| 383 // tag is shifted away. | 383 // tag is shifted away. |
| 384 void MacroAssembler::RecordWrite(Register object, | 384 void MacroAssembler::RecordWrite(Register object, |
| 385 Operand offset, | 385 Operand offset, |
| 386 Register scratch0, | 386 Register scratch0, |
| 387 Register scratch1) { | 387 Register scratch1) { |
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| 926 | 926 |
| 927 | 927 |
| 928 void MacroAssembler::IsObjectJSStringType(Register object, | 928 void MacroAssembler::IsObjectJSStringType(Register object, |
| 929 Register scratch, | 929 Register scratch, |
| 930 Label* fail) { | 930 Label* fail) { |
| 931 ASSERT(kNotStringTag != 0); | 931 ASSERT(kNotStringTag != 0); |
| 932 | 932 |
| 933 ldr(scratch, FieldMemOperand(object, HeapObject::kMapOffset)); | 933 ldr(scratch, FieldMemOperand(object, HeapObject::kMapOffset)); |
| 934 ldrb(scratch, FieldMemOperand(scratch, Map::kInstanceTypeOffset)); | 934 ldrb(scratch, FieldMemOperand(scratch, Map::kInstanceTypeOffset)); |
| 935 tst(scratch, Operand(kIsNotStringMask)); | 935 tst(scratch, Operand(kIsNotStringMask)); |
| 936 b(nz, fail); | 936 b(ne, fail); |
| 937 } | 937 } |
| 938 | 938 |
| 939 | 939 |
| 940 #ifdef ENABLE_DEBUGGER_SUPPORT | 940 #ifdef ENABLE_DEBUGGER_SUPPORT |
| 941 void MacroAssembler::DebugBreak() { | 941 void MacroAssembler::DebugBreak() { |
| 942 ASSERT(allow_stub_calls()); | 942 ASSERT(allow_stub_calls()); |
| 943 mov(r0, Operand(0, RelocInfo::NONE)); | 943 mov(r0, Operand(0, RelocInfo::NONE)); |
| 944 mov(r1, Operand(ExternalReference(Runtime::kDebugBreak))); | 944 mov(r1, Operand(ExternalReference(Runtime::kDebugBreak))); |
| 945 CEntryStub ces(1); | 945 CEntryStub ces(1); |
| 946 Call(ces.GetCode(), RelocInfo::DEBUG_BREAK); | 946 Call(ces.GetCode(), RelocInfo::DEBUG_BREAK); |
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| 1806 ASSERT(value > 0); | 1806 ASSERT(value > 0); |
| 1807 if (FLAG_native_code_counters && counter->Enabled()) { | 1807 if (FLAG_native_code_counters && counter->Enabled()) { |
| 1808 mov(scratch2, Operand(ExternalReference(counter))); | 1808 mov(scratch2, Operand(ExternalReference(counter))); |
| 1809 ldr(scratch1, MemOperand(scratch2)); | 1809 ldr(scratch1, MemOperand(scratch2)); |
| 1810 sub(scratch1, scratch1, Operand(value)); | 1810 sub(scratch1, scratch1, Operand(value)); |
| 1811 str(scratch1, MemOperand(scratch2)); | 1811 str(scratch1, MemOperand(scratch2)); |
| 1812 } | 1812 } |
| 1813 } | 1813 } |
| 1814 | 1814 |
| 1815 | 1815 |
| 1816 void MacroAssembler::Assert(Condition cc, const char* msg) { | 1816 void MacroAssembler::Assert(Condition cond, const char* msg) { |
| 1817 if (FLAG_debug_code) | 1817 if (FLAG_debug_code) |
| 1818 Check(cc, msg); | 1818 Check(cond, msg); |
| 1819 } | 1819 } |
| 1820 | 1820 |
| 1821 | 1821 |
| 1822 void MacroAssembler::AssertRegisterIsRoot(Register reg, | 1822 void MacroAssembler::AssertRegisterIsRoot(Register reg, |
| 1823 Heap::RootListIndex index) { | 1823 Heap::RootListIndex index) { |
| 1824 if (FLAG_debug_code) { | 1824 if (FLAG_debug_code) { |
| 1825 LoadRoot(ip, index); | 1825 LoadRoot(ip, index); |
| 1826 cmp(reg, ip); | 1826 cmp(reg, ip); |
| 1827 Check(eq, "Register did not match expected root"); | 1827 Check(eq, "Register did not match expected root"); |
| 1828 } | 1828 } |
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| 1841 LoadRoot(ip, Heap::kFixedCOWArrayMapRootIndex); | 1841 LoadRoot(ip, Heap::kFixedCOWArrayMapRootIndex); |
| 1842 cmp(elements, ip); | 1842 cmp(elements, ip); |
| 1843 b(eq, &ok); | 1843 b(eq, &ok); |
| 1844 Abort("JSObject with fast elements map has slow elements"); | 1844 Abort("JSObject with fast elements map has slow elements"); |
| 1845 bind(&ok); | 1845 bind(&ok); |
| 1846 pop(elements); | 1846 pop(elements); |
| 1847 } | 1847 } |
| 1848 } | 1848 } |
| 1849 | 1849 |
| 1850 | 1850 |
| 1851 void MacroAssembler::Check(Condition cc, const char* msg) { | 1851 void MacroAssembler::Check(Condition cond, const char* msg) { |
| 1852 Label L; | 1852 Label L; |
| 1853 b(cc, &L); | 1853 b(cond, &L); |
| 1854 Abort(msg); | 1854 Abort(msg); |
| 1855 // will not return here | 1855 // will not return here |
| 1856 bind(&L); | 1856 bind(&L); |
| 1857 } | 1857 } |
| 1858 | 1858 |
| 1859 | 1859 |
| 1860 void MacroAssembler::Abort(const char* msg) { | 1860 void MacroAssembler::Abort(const char* msg) { |
| 1861 Label abort_start; | 1861 Label abort_start; |
| 1862 bind(&abort_start); | 1862 bind(&abort_start); |
| 1863 // We want to pass the msg string like a smi to avoid GC | 1863 // We want to pass the msg string like a smi to avoid GC |
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| 2252 | 2252 |
| 2253 void CodePatcher::Emit(Address addr) { | 2253 void CodePatcher::Emit(Address addr) { |
| 2254 masm()->emit(reinterpret_cast<Instr>(addr)); | 2254 masm()->emit(reinterpret_cast<Instr>(addr)); |
| 2255 } | 2255 } |
| 2256 #endif // ENABLE_DEBUGGER_SUPPORT | 2256 #endif // ENABLE_DEBUGGER_SUPPORT |
| 2257 | 2257 |
| 2258 | 2258 |
| 2259 } } // namespace v8::internal | 2259 } } // namespace v8::internal |
| 2260 | 2260 |
| 2261 #endif // V8_TARGET_ARCH_ARM | 2261 #endif // V8_TARGET_ARCH_ARM |
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