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1 // Copyright 2013 the V8 project authors. All rights reserved. | 1 // Copyright 2013 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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1644 Drop(num_arguments); | 1644 Drop(num_arguments); |
1645 } | 1645 } |
1646 LoadRoot(x0, Heap::kUndefinedValueRootIndex); | 1646 LoadRoot(x0, Heap::kUndefinedValueRootIndex); |
1647 return; | 1647 return; |
1648 } | 1648 } |
1649 | 1649 |
1650 // Place the necessary arguments. | 1650 // Place the necessary arguments. |
1651 Mov(x0, num_arguments); | 1651 Mov(x0, num_arguments); |
1652 Mov(x1, ExternalReference(f, isolate())); | 1652 Mov(x1, ExternalReference(f, isolate())); |
1653 | 1653 |
1654 CEntryStub stub(1, save_doubles); | 1654 CEntryStub stub(isolate(), 1, save_doubles); |
1655 CallStub(&stub); | 1655 CallStub(&stub); |
1656 } | 1656 } |
1657 | 1657 |
1658 | 1658 |
1659 static int AddressOffset(ExternalReference ref0, ExternalReference ref1) { | 1659 static int AddressOffset(ExternalReference ref0, ExternalReference ref1) { |
1660 return ref0.address() - ref1.address(); | 1660 return ref0.address() - ref1.address(); |
1661 } | 1661 } |
1662 | 1662 |
1663 | 1663 |
1664 void MacroAssembler::CallApiFunctionAndReturn( | 1664 void MacroAssembler::CallApiFunctionAndReturn( |
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1722 FrameScope frame(this, StackFrame::MANUAL); | 1722 FrameScope frame(this, StackFrame::MANUAL); |
1723 PushSafepointRegisters(); | 1723 PushSafepointRegisters(); |
1724 Mov(x0, ExternalReference::isolate_address(isolate())); | 1724 Mov(x0, ExternalReference::isolate_address(isolate())); |
1725 CallCFunction(ExternalReference::log_enter_external_function(isolate()), 1); | 1725 CallCFunction(ExternalReference::log_enter_external_function(isolate()), 1); |
1726 PopSafepointRegisters(); | 1726 PopSafepointRegisters(); |
1727 } | 1727 } |
1728 | 1728 |
1729 // Native call returns to the DirectCEntry stub which redirects to the | 1729 // Native call returns to the DirectCEntry stub which redirects to the |
1730 // return address pushed on stack (could have moved after GC). | 1730 // return address pushed on stack (could have moved after GC). |
1731 // DirectCEntry stub itself is generated early and never moves. | 1731 // DirectCEntry stub itself is generated early and never moves. |
1732 DirectCEntryStub stub; | 1732 DirectCEntryStub stub(isolate()); |
1733 stub.GenerateCall(this, x3); | 1733 stub.GenerateCall(this, x3); |
1734 | 1734 |
1735 if (FLAG_log_timer_events) { | 1735 if (FLAG_log_timer_events) { |
1736 FrameScope frame(this, StackFrame::MANUAL); | 1736 FrameScope frame(this, StackFrame::MANUAL); |
1737 PushSafepointRegisters(); | 1737 PushSafepointRegisters(); |
1738 Mov(x0, ExternalReference::isolate_address(isolate())); | 1738 Mov(x0, ExternalReference::isolate_address(isolate())); |
1739 CallCFunction(ExternalReference::log_leave_external_function(isolate()), 1); | 1739 CallCFunction(ExternalReference::log_leave_external_function(isolate()), 1); |
1740 PopSafepointRegisters(); | 1740 PopSafepointRegisters(); |
1741 } | 1741 } |
1742 | 1742 |
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1806 Mov(x0, saved_result); | 1806 Mov(x0, saved_result); |
1807 B(&leave_exit_frame); | 1807 B(&leave_exit_frame); |
1808 } | 1808 } |
1809 | 1809 |
1810 | 1810 |
1811 void MacroAssembler::CallExternalReference(const ExternalReference& ext, | 1811 void MacroAssembler::CallExternalReference(const ExternalReference& ext, |
1812 int num_arguments) { | 1812 int num_arguments) { |
1813 Mov(x0, num_arguments); | 1813 Mov(x0, num_arguments); |
1814 Mov(x1, ext); | 1814 Mov(x1, ext); |
1815 | 1815 |
1816 CEntryStub stub(1); | 1816 CEntryStub stub(isolate(), 1); |
1817 CallStub(&stub); | 1817 CallStub(&stub); |
1818 } | 1818 } |
1819 | 1819 |
1820 | 1820 |
1821 void MacroAssembler::JumpToExternalReference(const ExternalReference& builtin) { | 1821 void MacroAssembler::JumpToExternalReference(const ExternalReference& builtin) { |
1822 Mov(x1, builtin); | 1822 Mov(x1, builtin); |
1823 CEntryStub stub(1); | 1823 CEntryStub stub(isolate(), 1); |
1824 Jump(stub.GetCode(isolate()), RelocInfo::CODE_TARGET); | 1824 Jump(stub.GetCode(isolate()), RelocInfo::CODE_TARGET); |
1825 } | 1825 } |
1826 | 1826 |
1827 | 1827 |
1828 void MacroAssembler::GetBuiltinFunction(Register target, | 1828 void MacroAssembler::GetBuiltinFunction(Register target, |
1829 Builtins::JavaScript id) { | 1829 Builtins::JavaScript id) { |
1830 // Load the builtins object into target register. | 1830 // Load the builtins object into target register. |
1831 Ldr(target, GlobalObjectMemOperand()); | 1831 Ldr(target, GlobalObjectMemOperand()); |
1832 Ldr(target, FieldMemOperand(target, GlobalObject::kBuiltinsOffset)); | 1832 Ldr(target, FieldMemOperand(target, GlobalObject::kBuiltinsOffset)); |
1833 // Load the JavaScript builtin function from the builtins object. | 1833 // Load the JavaScript builtin function from the builtins object. |
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2912 ASSERT(jssp.Is(StackPointer())); | 2912 ASSERT(jssp.Is(StackPointer())); |
2913 | 2913 |
2914 // Try to convert the double to an int64. If successful, the bottom 32 bits | 2914 // Try to convert the double to an int64. If successful, the bottom 32 bits |
2915 // contain our truncated int32 result. | 2915 // contain our truncated int32 result. |
2916 TryConvertDoubleToInt64(result, double_input, &done); | 2916 TryConvertDoubleToInt64(result, double_input, &done); |
2917 | 2917 |
2918 // If we fell through then inline version didn't succeed - call stub instead. | 2918 // If we fell through then inline version didn't succeed - call stub instead. |
2919 Push(lr); | 2919 Push(lr); |
2920 Push(double_input); // Put input on stack. | 2920 Push(double_input); // Put input on stack. |
2921 | 2921 |
2922 DoubleToIStub stub(jssp, | 2922 DoubleToIStub stub(isolate(), |
| 2923 jssp, |
2923 result, | 2924 result, |
2924 0, | 2925 0, |
2925 true, // is_truncating | 2926 true, // is_truncating |
2926 true); // skip_fastpath | 2927 true); // skip_fastpath |
2927 CallStub(&stub); // DoubleToIStub preserves any registers it needs to clobber | 2928 CallStub(&stub); // DoubleToIStub preserves any registers it needs to clobber |
2928 | 2929 |
2929 Drop(1, kDoubleSize); // Drop the double input on the stack. | 2930 Drop(1, kDoubleSize); // Drop the double input on the stack. |
2930 Pop(lr); | 2931 Pop(lr); |
2931 | 2932 |
2932 Bind(&done); | 2933 Bind(&done); |
2933 } | 2934 } |
2934 | 2935 |
2935 | 2936 |
2936 void MacroAssembler::TruncateHeapNumberToI(Register result, | 2937 void MacroAssembler::TruncateHeapNumberToI(Register result, |
2937 Register object) { | 2938 Register object) { |
2938 Label done; | 2939 Label done; |
2939 ASSERT(!result.is(object)); | 2940 ASSERT(!result.is(object)); |
2940 ASSERT(jssp.Is(StackPointer())); | 2941 ASSERT(jssp.Is(StackPointer())); |
2941 | 2942 |
2942 Ldr(fp_scratch, FieldMemOperand(object, HeapNumber::kValueOffset)); | 2943 Ldr(fp_scratch, FieldMemOperand(object, HeapNumber::kValueOffset)); |
2943 | 2944 |
2944 // Try to convert the double to an int64. If successful, the bottom 32 bits | 2945 // Try to convert the double to an int64. If successful, the bottom 32 bits |
2945 // contain our truncated int32 result. | 2946 // contain our truncated int32 result. |
2946 TryConvertDoubleToInt64(result, fp_scratch, &done); | 2947 TryConvertDoubleToInt64(result, fp_scratch, &done); |
2947 | 2948 |
2948 // If we fell through then inline version didn't succeed - call stub instead. | 2949 // If we fell through then inline version didn't succeed - call stub instead. |
2949 Push(lr); | 2950 Push(lr); |
2950 DoubleToIStub stub(object, | 2951 DoubleToIStub stub(isolate(), |
| 2952 object, |
2951 result, | 2953 result, |
2952 HeapNumber::kValueOffset - kHeapObjectTag, | 2954 HeapNumber::kValueOffset - kHeapObjectTag, |
2953 true, // is_truncating | 2955 true, // is_truncating |
2954 true); // skip_fastpath | 2956 true); // skip_fastpath |
2955 CallStub(&stub); // DoubleToIStub preserves any registers it needs to clobber | 2957 CallStub(&stub); // DoubleToIStub preserves any registers it needs to clobber |
2956 Pop(lr); | 2958 Pop(lr); |
2957 | 2959 |
2958 Bind(&done); | 2960 Bind(&done); |
2959 } | 2961 } |
2960 | 2962 |
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3181 // cannot be allowed to destroy the context in cp). | 3183 // cannot be allowed to destroy the context in cp). |
3182 Mov(dst, cp); | 3184 Mov(dst, cp); |
3183 } | 3185 } |
3184 } | 3186 } |
3185 | 3187 |
3186 | 3188 |
3187 #ifdef ENABLE_DEBUGGER_SUPPORT | 3189 #ifdef ENABLE_DEBUGGER_SUPPORT |
3188 void MacroAssembler::DebugBreak() { | 3190 void MacroAssembler::DebugBreak() { |
3189 Mov(x0, 0); | 3191 Mov(x0, 0); |
3190 Mov(x1, ExternalReference(Runtime::kDebugBreak, isolate())); | 3192 Mov(x1, ExternalReference(Runtime::kDebugBreak, isolate())); |
3191 CEntryStub ces(1); | 3193 CEntryStub ces(isolate(), 1); |
3192 ASSERT(AllowThisStubCall(&ces)); | 3194 ASSERT(AllowThisStubCall(&ces)); |
3193 Call(ces.GetCode(isolate()), RelocInfo::DEBUG_BREAK); | 3195 Call(ces.GetCode(isolate()), RelocInfo::DEBUG_BREAK); |
3194 } | 3196 } |
3195 #endif | 3197 #endif |
3196 | 3198 |
3197 | 3199 |
3198 void MacroAssembler::PushTryHandler(StackHandler::Kind kind, | 3200 void MacroAssembler::PushTryHandler(StackHandler::Kind kind, |
3199 int handler_index) { | 3201 int handler_index) { |
3200 ASSERT(jssp.Is(StackPointer())); | 3202 ASSERT(jssp.Is(StackPointer())); |
3201 // Adjust this code if the asserts don't hold. | 3203 // Adjust this code if the asserts don't hold. |
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4196 Tbz(scratch1, (14 + kPointerSizeLog2), &done); | 4198 Tbz(scratch1, (14 + kPointerSizeLog2), &done); |
4197 } else { | 4199 } else { |
4198 ASSERT(and_then == kReturnAtEnd); | 4200 ASSERT(and_then == kReturnAtEnd); |
4199 Tbnz(scratch1, (14 + kPointerSizeLog2), &store_buffer_overflow); | 4201 Tbnz(scratch1, (14 + kPointerSizeLog2), &store_buffer_overflow); |
4200 Ret(); | 4202 Ret(); |
4201 } | 4203 } |
4202 | 4204 |
4203 Bind(&store_buffer_overflow); | 4205 Bind(&store_buffer_overflow); |
4204 Push(lr); | 4206 Push(lr); |
4205 StoreBufferOverflowStub store_buffer_overflow_stub = | 4207 StoreBufferOverflowStub store_buffer_overflow_stub = |
4206 StoreBufferOverflowStub(fp_mode); | 4208 StoreBufferOverflowStub(isolate(), fp_mode); |
4207 CallStub(&store_buffer_overflow_stub); | 4209 CallStub(&store_buffer_overflow_stub); |
4208 Pop(lr); | 4210 Pop(lr); |
4209 | 4211 |
4210 Bind(&done); | 4212 Bind(&done); |
4211 if (and_then == kReturnAtEnd) { | 4213 if (and_then == kReturnAtEnd) { |
4212 Ret(); | 4214 Ret(); |
4213 } | 4215 } |
4214 } | 4216 } |
4215 | 4217 |
4216 | 4218 |
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4389 &done); | 4391 &done); |
4390 CheckPageFlagClear(object, | 4392 CheckPageFlagClear(object, |
4391 value, // Used as scratch. | 4393 value, // Used as scratch. |
4392 MemoryChunk::kPointersFromHereAreInterestingMask, | 4394 MemoryChunk::kPointersFromHereAreInterestingMask, |
4393 &done); | 4395 &done); |
4394 | 4396 |
4395 // Record the actual write. | 4397 // Record the actual write. |
4396 if (lr_status == kLRHasNotBeenSaved) { | 4398 if (lr_status == kLRHasNotBeenSaved) { |
4397 Push(lr); | 4399 Push(lr); |
4398 } | 4400 } |
4399 RecordWriteStub stub(object, value, address, remembered_set_action, fp_mode); | 4401 RecordWriteStub stub(isolate(), object, value, address, remembered_set_action, |
| 4402 fp_mode); |
4400 CallStub(&stub); | 4403 CallStub(&stub); |
4401 if (lr_status == kLRHasNotBeenSaved) { | 4404 if (lr_status == kLRHasNotBeenSaved) { |
4402 Pop(lr); | 4405 Pop(lr); |
4403 } | 4406 } |
4404 | 4407 |
4405 Bind(&done); | 4408 Bind(&done); |
4406 | 4409 |
4407 // Clobber clobbered registers when running with the debug-code flag | 4410 // Clobber clobbered registers when running with the debug-code flag |
4408 // turned on to provoke errors. | 4411 // turned on to provoke errors. |
4409 if (emit_debug_code()) { | 4412 if (emit_debug_code()) { |
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5241 } | 5244 } |
5242 } | 5245 } |
5243 | 5246 |
5244 | 5247 |
5245 #undef __ | 5248 #undef __ |
5246 | 5249 |
5247 | 5250 |
5248 } } // namespace v8::internal | 5251 } } // namespace v8::internal |
5249 | 5252 |
5250 #endif // V8_TARGET_ARCH_ARM64 | 5253 #endif // V8_TARGET_ARCH_ARM64 |
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