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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 // 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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7759 void ProfileEntryHookStub::MaybeCallEntryHook(MacroAssembler* masm) { | 7759 void ProfileEntryHookStub::MaybeCallEntryHook(MacroAssembler* masm) { |
7760 if (entry_hook_ != NULL) { | 7760 if (entry_hook_ != NULL) { |
7761 ProfileEntryHookStub stub; | 7761 ProfileEntryHookStub stub; |
7762 masm->CallStub(&stub); | 7762 masm->CallStub(&stub); |
7763 } | 7763 } |
7764 } | 7764 } |
7765 | 7765 |
7766 | 7766 |
7767 void ProfileEntryHookStub::Generate(MacroAssembler* masm) { | 7767 void ProfileEntryHookStub::Generate(MacroAssembler* masm) { |
7768 // Ecx is the only volatile register we must save. | 7768 // Ecx is the only volatile register we must save. |
| 7769 const int kNumSavedRegisters = 1; |
7769 __ push(ecx); | 7770 __ push(ecx); |
7770 | 7771 |
7771 // Calculate and push the original stack pointer. | 7772 // Calculate and push the original stack pointer. |
7772 __ lea(eax, Operand(esp, kPointerSize)); | 7773 __ lea(eax, Operand(esp, (kNumSavedRegisters + 1) * kPointerSize)); |
7773 __ push(eax); | 7774 __ push(eax); |
7774 | 7775 |
7775 // Calculate and push the function address. | 7776 // Retrieve our return address and use it to calculate the calling |
7776 __ mov(eax, Operand(eax, 0)); | 7777 // function's address. |
| 7778 __ mov(eax, Operand(esp, (kNumSavedRegisters + 1) * kPointerSize)); |
7777 __ sub(eax, Immediate(Assembler::kCallInstructionLength)); | 7779 __ sub(eax, Immediate(Assembler::kCallInstructionLength)); |
7778 __ push(eax); | 7780 __ push(eax); |
7779 | 7781 |
7780 // Call the entry hook. | 7782 // Call the entry hook. |
7781 int32_t hook_location = reinterpret_cast<int32_t>(&entry_hook_); | 7783 int32_t hook_location = reinterpret_cast<int32_t>(&entry_hook_); |
7782 __ call(Operand(hook_location, RelocInfo::NONE32)); | 7784 __ call(Operand(hook_location, RelocInfo::NONE32)); |
7783 __ add(esp, Immediate(2 * kPointerSize)); | 7785 __ add(esp, Immediate(2 * kPointerSize)); |
7784 | 7786 |
7785 // Restore ecx. | 7787 // Restore ecx. |
7786 __ pop(ecx); | 7788 __ pop(ecx); |
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8089 __ jmp(generic_construct_stub, RelocInfo::CODE_TARGET); | 8091 __ jmp(generic_construct_stub, RelocInfo::CODE_TARGET); |
8090 } | 8092 } |
8091 } | 8093 } |
8092 | 8094 |
8093 | 8095 |
8094 #undef __ | 8096 #undef __ |
8095 | 8097 |
8096 } } // namespace v8::internal | 8098 } } // namespace v8::internal |
8097 | 8099 |
8098 #endif // V8_TARGET_ARCH_IA32 | 8100 #endif // V8_TARGET_ARCH_IA32 |
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