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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 #include "src/bootstrapper.h" | 7 #include "src/bootstrapper.h" |
8 #include "src/code-stubs.h" | 8 #include "src/code-stubs.h" |
9 #include "src/codegen.h" | 9 #include "src/codegen.h" |
10 #include "src/ic/handler-compiler.h" | 10 #include "src/ic/handler-compiler.h" |
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1057 } | 1057 } |
1058 | 1058 |
1059 | 1059 |
1060 void CEntryStub::Generate(MacroAssembler* masm) { | 1060 void CEntryStub::Generate(MacroAssembler* masm) { |
1061 // Called from JavaScript; parameters are on stack as if calling JS function | 1061 // Called from JavaScript; parameters are on stack as if calling JS function |
1062 // a0: number of arguments including receiver | 1062 // a0: number of arguments including receiver |
1063 // a1: pointer to builtin function | 1063 // a1: pointer to builtin function |
1064 // fp: frame pointer (restored after C call) | 1064 // fp: frame pointer (restored after C call) |
1065 // sp: stack pointer (restored as callee's sp after C call) | 1065 // sp: stack pointer (restored as callee's sp after C call) |
1066 // cp: current context (C callee-saved) | 1066 // cp: current context (C callee-saved) |
1067 // | |
1068 // If argv_in_register(): | |
1069 // a2: pointer to the first argument | |
1070 | 1067 |
1071 ProfileEntryHookStub::MaybeCallEntryHook(masm); | 1068 ProfileEntryHookStub::MaybeCallEntryHook(masm); |
1072 | 1069 |
1073 if (!argv_in_register()) { | 1070 // Compute the argv pointer in a callee-saved register. |
1074 // Compute the argv pointer in a callee-saved register. | 1071 __ dsll(s1, a0, kPointerSizeLog2); |
1075 __ dsll(s1, a0, kPointerSizeLog2); | 1072 __ Daddu(s1, sp, s1); |
1076 __ Daddu(s1, sp, s1); | 1073 __ Dsubu(s1, s1, kPointerSize); |
1077 __ Dsubu(s1, s1, kPointerSize); | |
1078 } else { | |
1079 __ mov(s1, a2); | |
1080 } | |
1081 | 1074 |
1082 // Enter the exit frame that transitions from JavaScript to C++. | 1075 // Enter the exit frame that transitions from JavaScript to C++. |
1083 FrameScope scope(masm, StackFrame::MANUAL); | 1076 FrameScope scope(masm, StackFrame::MANUAL); |
1084 __ EnterExitFrame(save_doubles()); | 1077 __ EnterExitFrame(save_doubles()); |
1085 | 1078 |
1086 // s0: number of arguments including receiver (C callee-saved) | 1079 // s0: number of arguments including receiver (C callee-saved) |
1087 // s1: pointer to first argument (C callee-saved) | 1080 // s1: pointer to first argument (C callee-saved) |
1088 // s2: pointer to builtin function (C callee-saved) | 1081 // s2: pointer to builtin function (C callee-saved) |
1089 | 1082 |
1090 // Prepare arguments for C routine. | 1083 // Prepare arguments for C routine. |
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5767 MemOperand(fp, 6 * kPointerSize), NULL); | 5760 MemOperand(fp, 6 * kPointerSize), NULL); |
5768 } | 5761 } |
5769 | 5762 |
5770 | 5763 |
5771 #undef __ | 5764 #undef __ |
5772 | 5765 |
5773 } // namespace internal | 5766 } // namespace internal |
5774 } // namespace v8 | 5767 } // namespace v8 |
5775 | 5768 |
5776 #endif // V8_TARGET_ARCH_MIPS64 | 5769 #endif // V8_TARGET_ARCH_MIPS64 |
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