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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_MIPS | 5 #if V8_TARGET_ARCH_MIPS |
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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1958 // the generator was suspended. | 1958 // the generator was suspended. |
1959 Label resume_frame, done; | 1959 Label resume_frame, done; |
1960 __ bind(&push_frame); | 1960 __ bind(&push_frame); |
1961 __ Call(&resume_frame); | 1961 __ Call(&resume_frame); |
1962 __ jmp(&done); | 1962 __ jmp(&done); |
1963 __ bind(&resume_frame); | 1963 __ bind(&resume_frame); |
1964 // ra = return address. | 1964 // ra = return address. |
1965 // fp = caller's frame pointer. | 1965 // fp = caller's frame pointer. |
1966 // cp = callee's context, | 1966 // cp = callee's context, |
1967 // t0 = callee's JS function. | 1967 // t0 = callee's JS function. |
1968 __ Push(ra, fp, cp, t0); | 1968 __ PushStandardFrame(t0); |
1969 // Adjust FP to point to saved FP. | |
1970 __ Addu(fp, sp, 2 * kPointerSize); | |
1971 | 1969 |
1972 // Load the operand stack size. | 1970 // Load the operand stack size. |
1973 __ lw(a3, FieldMemOperand(a1, JSGeneratorObject::kOperandStackOffset)); | 1971 __ lw(a3, FieldMemOperand(a1, JSGeneratorObject::kOperandStackOffset)); |
1974 __ lw(a3, FieldMemOperand(a3, FixedArray::kLengthOffset)); | 1972 __ lw(a3, FieldMemOperand(a3, FixedArray::kLengthOffset)); |
1975 __ SmiUntag(a3); | 1973 __ SmiUntag(a3); |
1976 | 1974 |
1977 // If we are sending a value and there is no operand stack, we can jump back | 1975 // If we are sending a value and there is no operand stack, we can jump back |
1978 // in directly. | 1976 // in directly. |
1979 if (resume_mode == JSGeneratorObject::NEXT) { | 1977 if (resume_mode == JSGeneratorObject::NEXT) { |
1980 Label slow_resume; | 1978 Label slow_resume; |
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4216 reinterpret_cast<uint32_t>( | 4214 reinterpret_cast<uint32_t>( |
4217 isolate->builtins()->OsrAfterStackCheck()->entry())); | 4215 isolate->builtins()->OsrAfterStackCheck()->entry())); |
4218 return OSR_AFTER_STACK_CHECK; | 4216 return OSR_AFTER_STACK_CHECK; |
4219 } | 4217 } |
4220 | 4218 |
4221 | 4219 |
4222 } // namespace internal | 4220 } // namespace internal |
4223 } // namespace v8 | 4221 } // namespace v8 |
4224 | 4222 |
4225 #endif // V8_TARGET_ARCH_MIPS | 4223 #endif // V8_TARGET_ARCH_MIPS |
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