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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 #if V8_TARGET_ARCH_MIPS64 | 5 #if V8_TARGET_ARCH_MIPS64 |
6 | 6 |
7 // Note on Mips implementation: | 7 // Note on Mips implementation: |
8 // | 8 // |
9 // The result_register() for mips is the 'v0' register, which is defined | 9 // The result_register() for mips is the 'v0' register, which is defined |
10 // by the ABI to contain function return values. However, the first | 10 // by the ABI to contain function return values. However, the first |
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1967 VisitForStackValue(expr->generator_object()); | 1967 VisitForStackValue(expr->generator_object()); |
1968 | 1968 |
1969 // Initial stack layout is as follows: | 1969 // Initial stack layout is as follows: |
1970 // [sp + 1 * kPointerSize] iter | 1970 // [sp + 1 * kPointerSize] iter |
1971 // [sp + 0 * kPointerSize] g | 1971 // [sp + 0 * kPointerSize] g |
1972 | 1972 |
1973 Label l_catch, l_try, l_suspend, l_continuation, l_resume; | 1973 Label l_catch, l_try, l_suspend, l_continuation, l_resume; |
1974 Label l_next, l_call; | 1974 Label l_next, l_call; |
1975 Register load_receiver = LoadDescriptor::ReceiverRegister(); | 1975 Register load_receiver = LoadDescriptor::ReceiverRegister(); |
1976 Register load_name = LoadDescriptor::NameRegister(); | 1976 Register load_name = LoadDescriptor::NameRegister(); |
| 1977 |
1977 // Initial send value is undefined. | 1978 // Initial send value is undefined. |
1978 __ LoadRoot(a0, Heap::kUndefinedValueRootIndex); | 1979 __ LoadRoot(a0, Heap::kUndefinedValueRootIndex); |
1979 __ Branch(&l_next); | 1980 __ Branch(&l_next); |
1980 | 1981 |
1981 // catch (e) { receiver = iter; f = 'throw'; arg = e; goto l_call; } | 1982 // catch (e) { receiver = iter; f = 'throw'; arg = e; goto l_call; } |
1982 __ bind(&l_catch); | 1983 __ bind(&l_catch); |
1983 __ mov(a0, v0); | 1984 __ mov(a0, v0); |
1984 __ LoadRoot(a2, Heap::kthrow_stringRootIndex); // "throw" | 1985 __ LoadRoot(a2, Heap::kthrow_stringRootIndex); // "throw" |
1985 __ ld(a3, MemOperand(sp, 1 * kPointerSize)); // iter | 1986 __ ld(a3, MemOperand(sp, 1 * kPointerSize)); // iter |
1986 __ Push(a2, a3, a0); // "throw", iter, except | 1987 __ Push(a2, a3, a0); // "throw", iter, except |
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2079 Expression *value, | 2080 Expression *value, |
2080 JSGeneratorObject::ResumeMode resume_mode) { | 2081 JSGeneratorObject::ResumeMode resume_mode) { |
2081 // The value stays in a0, and is ultimately read by the resumed generator, as | 2082 // The value stays in a0, and is ultimately read by the resumed generator, as |
2082 // if CallRuntime(Runtime::kSuspendJSGeneratorObject) returned it. Or it | 2083 // if CallRuntime(Runtime::kSuspendJSGeneratorObject) returned it. Or it |
2083 // is read to throw the value when the resumed generator is already closed. | 2084 // is read to throw the value when the resumed generator is already closed. |
2084 // a1 will hold the generator object until the activation has been resumed. | 2085 // a1 will hold the generator object until the activation has been resumed. |
2085 VisitForStackValue(generator); | 2086 VisitForStackValue(generator); |
2086 VisitForAccumulatorValue(value); | 2087 VisitForAccumulatorValue(value); |
2087 __ pop(a1); | 2088 __ pop(a1); |
2088 | 2089 |
| 2090 // Store input value into generator object. |
| 2091 __ sd(result_register(), |
| 2092 FieldMemOperand(a1, JSGeneratorObject::kInputOffset)); |
| 2093 __ mov(a2, result_register()); |
| 2094 __ RecordWriteField(a1, JSGeneratorObject::kInputOffset, a2, a3, |
| 2095 kRAHasBeenSaved, kDontSaveFPRegs); |
| 2096 |
2089 // Load suspended function and context. | 2097 // Load suspended function and context. |
2090 __ ld(cp, FieldMemOperand(a1, JSGeneratorObject::kContextOffset)); | 2098 __ ld(cp, FieldMemOperand(a1, JSGeneratorObject::kContextOffset)); |
2091 __ ld(a4, FieldMemOperand(a1, JSGeneratorObject::kFunctionOffset)); | 2099 __ ld(a4, FieldMemOperand(a1, JSGeneratorObject::kFunctionOffset)); |
2092 | 2100 |
2093 // Load receiver and store as the first argument. | 2101 // Load receiver and store as the first argument. |
2094 __ ld(a2, FieldMemOperand(a1, JSGeneratorObject::kReceiverOffset)); | 2102 __ ld(a2, FieldMemOperand(a1, JSGeneratorObject::kReceiverOffset)); |
2095 __ push(a2); | 2103 __ push(a2); |
2096 | 2104 |
2097 // Push holes for the rest of the arguments to the generator function. | 2105 // Push holes for the rest of the arguments to the generator function. |
2098 __ ld(a3, FieldMemOperand(a4, JSFunction::kSharedFunctionInfoOffset)); | 2106 __ ld(a3, FieldMemOperand(a4, JSFunction::kSharedFunctionInfoOffset)); |
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4816 reinterpret_cast<uint64_t>( | 4824 reinterpret_cast<uint64_t>( |
4817 isolate->builtins()->OsrAfterStackCheck()->entry())); | 4825 isolate->builtins()->OsrAfterStackCheck()->entry())); |
4818 return OSR_AFTER_STACK_CHECK; | 4826 return OSR_AFTER_STACK_CHECK; |
4819 } | 4827 } |
4820 | 4828 |
4821 | 4829 |
4822 } // namespace internal | 4830 } // namespace internal |
4823 } // namespace v8 | 4831 } // namespace v8 |
4824 | 4832 |
4825 #endif // V8_TARGET_ARCH_MIPS64 | 4833 #endif // V8_TARGET_ARCH_MIPS64 |
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