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1 // Copyright 2012 the V8 project authors. All rights reserved. | 1 // Copyright 2012 the V8 project authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #include "src/v8.h" | 5 #include "src/v8.h" |
6 | 6 |
7 #if V8_TARGET_ARCH_MIPS | 7 #if V8_TARGET_ARCH_MIPS |
8 | 8 |
9 #include "src/base/bits.h" | 9 #include "src/base/bits.h" |
10 #include "src/bootstrapper.h" | 10 #include "src/bootstrapper.h" |
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4838 | 4838 |
4839 static int AddressOffset(ExternalReference ref0, ExternalReference ref1) { | 4839 static int AddressOffset(ExternalReference ref0, ExternalReference ref1) { |
4840 return ref0.address() - ref1.address(); | 4840 return ref0.address() - ref1.address(); |
4841 } | 4841 } |
4842 | 4842 |
4843 | 4843 |
4844 // Calls an API function. Allocates HandleScope, extracts returned value | 4844 // Calls an API function. Allocates HandleScope, extracts returned value |
4845 // from handle and propagates exceptions. Restores context. stack_space | 4845 // from handle and propagates exceptions. Restores context. stack_space |
4846 // - space to be unwound on exit (includes the call JS arguments space and | 4846 // - space to be unwound on exit (includes the call JS arguments space and |
4847 // the additional space allocated for the fast call). | 4847 // the additional space allocated for the fast call). |
4848 static void CallApiFunctionAndReturn(MacroAssembler* masm, | 4848 static void CallApiFunctionAndReturn( |
4849 Register function_address, | 4849 MacroAssembler* masm, Register function_address, |
4850 ExternalReference thunk_ref, | 4850 ExternalReference thunk_ref, int stack_space, int32_t stack_space_offset, |
4851 int stack_space, | 4851 MemOperand return_value_operand, MemOperand* context_restore_operand) { |
4852 MemOperand* stack_space_operand, | |
4853 MemOperand return_value_operand, | |
4854 MemOperand* context_restore_operand) { | |
4855 Isolate* isolate = masm->isolate(); | 4852 Isolate* isolate = masm->isolate(); |
4856 ExternalReference next_address = | 4853 ExternalReference next_address = |
4857 ExternalReference::handle_scope_next_address(isolate); | 4854 ExternalReference::handle_scope_next_address(isolate); |
4858 const int kNextOffset = 0; | 4855 const int kNextOffset = 0; |
4859 const int kLimitOffset = AddressOffset( | 4856 const int kLimitOffset = AddressOffset( |
4860 ExternalReference::handle_scope_limit_address(isolate), next_address); | 4857 ExternalReference::handle_scope_limit_address(isolate), next_address); |
4861 const int kLevelOffset = AddressOffset( | 4858 const int kLevelOffset = AddressOffset( |
4862 ExternalReference::handle_scope_level_address(isolate), next_address); | 4859 ExternalReference::handle_scope_level_address(isolate), next_address); |
4863 | 4860 |
4864 DCHECK(function_address.is(a1) || function_address.is(a2)); | 4861 DCHECK(function_address.is(a1) || function_address.is(a2)); |
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4938 __ LoadRoot(t0, Heap::kTheHoleValueRootIndex); | 4935 __ LoadRoot(t0, Heap::kTheHoleValueRootIndex); |
4939 __ li(at, Operand(ExternalReference::scheduled_exception_address(isolate))); | 4936 __ li(at, Operand(ExternalReference::scheduled_exception_address(isolate))); |
4940 __ lw(t1, MemOperand(at)); | 4937 __ lw(t1, MemOperand(at)); |
4941 __ Branch(&promote_scheduled_exception, ne, t0, Operand(t1)); | 4938 __ Branch(&promote_scheduled_exception, ne, t0, Operand(t1)); |
4942 __ bind(&exception_handled); | 4939 __ bind(&exception_handled); |
4943 | 4940 |
4944 bool restore_context = context_restore_operand != NULL; | 4941 bool restore_context = context_restore_operand != NULL; |
4945 if (restore_context) { | 4942 if (restore_context) { |
4946 __ lw(cp, *context_restore_operand); | 4943 __ lw(cp, *context_restore_operand); |
4947 } | 4944 } |
4948 if (stack_space_operand != NULL) { | 4945 if (stack_space_offset != kInvalidStackOffset) { |
4949 __ lw(s0, *stack_space_operand); | 4946 // ExitFrame contains four MIPS argument slots after DirectCEntryStub call |
| 4947 // so this must be accounted for. |
| 4948 __ lw(s0, MemOperand(sp, stack_space_offset + kCArgsSlotsSize)); |
4950 } else { | 4949 } else { |
4951 __ li(s0, Operand(stack_space)); | 4950 __ li(s0, Operand(stack_space)); |
4952 } | 4951 } |
4953 __ LeaveExitFrame(false, s0, !restore_context, EMIT_RETURN, | 4952 __ LeaveExitFrame(false, s0, !restore_context, EMIT_RETURN, |
4954 stack_space_operand != NULL); | 4953 stack_space_offset != kInvalidStackOffset); |
4955 | 4954 |
4956 __ bind(&promote_scheduled_exception); | 4955 __ bind(&promote_scheduled_exception); |
4957 { | 4956 { |
4958 FrameScope frame(masm, StackFrame::INTERNAL); | 4957 FrameScope frame(masm, StackFrame::INTERNAL); |
4959 __ CallExternalReference( | 4958 __ CallExternalReference( |
4960 ExternalReference(Runtime::kPromoteScheduledException, isolate), 0); | 4959 ExternalReference(Runtime::kPromoteScheduledException, isolate), 0); |
4961 } | 4960 } |
4962 __ jmp(&exception_handled); | 4961 __ jmp(&exception_handled); |
4963 | 4962 |
4964 // HandleScope limit has changed. Delete allocated extensions. | 4963 // HandleScope limit has changed. Delete allocated extensions. |
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5075 fp, (2 + FCA::kContextSaveIndex) * kPointerSize); | 5074 fp, (2 + FCA::kContextSaveIndex) * kPointerSize); |
5076 // Stores return the first js argument. | 5075 // Stores return the first js argument. |
5077 int return_value_offset = 0; | 5076 int return_value_offset = 0; |
5078 if (return_first_arg) { | 5077 if (return_first_arg) { |
5079 return_value_offset = 2 + FCA::kArgsLength; | 5078 return_value_offset = 2 + FCA::kArgsLength; |
5080 } else { | 5079 } else { |
5081 return_value_offset = 2 + FCA::kReturnValueOffset; | 5080 return_value_offset = 2 + FCA::kReturnValueOffset; |
5082 } | 5081 } |
5083 MemOperand return_value_operand(fp, return_value_offset * kPointerSize); | 5082 MemOperand return_value_operand(fp, return_value_offset * kPointerSize); |
5084 int stack_space = 0; | 5083 int stack_space = 0; |
5085 MemOperand is_construct_call_operand = | 5084 int32_t stack_space_offset = 4 * kPointerSize; |
5086 MemOperand(sp, 4 * kPointerSize + kCArgsSlotsSize); | |
5087 MemOperand* stack_space_operand = &is_construct_call_operand; | |
5088 if (argc.is_immediate()) { | 5085 if (argc.is_immediate()) { |
5089 stack_space = argc.immediate() + FCA::kArgsLength + 1; | 5086 stack_space = argc.immediate() + FCA::kArgsLength + 1; |
5090 stack_space_operand = NULL; | 5087 stack_space_offset = kInvalidStackOffset; |
5091 } | 5088 } |
5092 CallApiFunctionAndReturn(masm, api_function_address, thunk_ref, stack_space, | 5089 CallApiFunctionAndReturn(masm, api_function_address, thunk_ref, stack_space, |
5093 stack_space_operand, return_value_operand, | 5090 stack_space_offset, return_value_operand, |
5094 &context_restore_operand); | 5091 &context_restore_operand); |
5095 } | 5092 } |
5096 | 5093 |
5097 | 5094 |
5098 void CallApiFunctionStub::Generate(MacroAssembler* masm) { | 5095 void CallApiFunctionStub::Generate(MacroAssembler* masm) { |
5099 bool call_data_undefined = this->call_data_undefined(); | 5096 bool call_data_undefined = this->call_data_undefined(); |
5100 CallApiFunctionStubHelper(masm, ParameterCount(a3), false, | 5097 CallApiFunctionStubHelper(masm, ParameterCount(a3), false, |
5101 call_data_undefined); | 5098 call_data_undefined); |
5102 } | 5099 } |
5103 | 5100 |
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5132 // Create PropertyAccessorInfo instance on the stack above the exit frame with | 5129 // Create PropertyAccessorInfo instance on the stack above the exit frame with |
5133 // a1 (internal::Object** args_) as the data. | 5130 // a1 (internal::Object** args_) as the data. |
5134 __ sw(a1, MemOperand(sp, 1 * kPointerSize)); | 5131 __ sw(a1, MemOperand(sp, 1 * kPointerSize)); |
5135 __ Addu(a1, sp, Operand(1 * kPointerSize)); // a1 = AccessorInfo& | 5132 __ Addu(a1, sp, Operand(1 * kPointerSize)); // a1 = AccessorInfo& |
5136 | 5133 |
5137 const int kStackUnwindSpace = PropertyCallbackArguments::kArgsLength + 1; | 5134 const int kStackUnwindSpace = PropertyCallbackArguments::kArgsLength + 1; |
5138 | 5135 |
5139 ExternalReference thunk_ref = | 5136 ExternalReference thunk_ref = |
5140 ExternalReference::invoke_accessor_getter_callback(isolate()); | 5137 ExternalReference::invoke_accessor_getter_callback(isolate()); |
5141 CallApiFunctionAndReturn(masm, api_function_address, thunk_ref, | 5138 CallApiFunctionAndReturn(masm, api_function_address, thunk_ref, |
5142 kStackUnwindSpace, NULL, | 5139 kStackUnwindSpace, kInvalidStackOffset, |
5143 MemOperand(fp, 6 * kPointerSize), NULL); | 5140 MemOperand(fp, 6 * kPointerSize), NULL); |
5144 } | 5141 } |
5145 | 5142 |
5146 | 5143 |
5147 #undef __ | 5144 #undef __ |
5148 | 5145 |
5149 } } // namespace v8::internal | 5146 } } // namespace v8::internal |
5150 | 5147 |
5151 #endif // V8_TARGET_ARCH_MIPS | 5148 #endif // V8_TARGET_ARCH_MIPS |
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