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1 // Copyright 2013 the V8 project authors. All rights reserved. | 1 // Copyright 2013 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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1837 // Jump to a faked try block that does the invoke, with a faked catch | 1837 // Jump to a faked try block that does the invoke, with a faked catch |
1838 // block that sets the pending exception. | 1838 // block that sets the pending exception. |
1839 __ B(&invoke); | 1839 __ B(&invoke); |
1840 | 1840 |
1841 // Prevent the constant pool from being emitted between the record of the | 1841 // Prevent the constant pool from being emitted between the record of the |
1842 // handler_entry position and the first instruction of the sequence here. | 1842 // handler_entry position and the first instruction of the sequence here. |
1843 // There is no risk because Assembler::Emit() emits the instruction before | 1843 // There is no risk because Assembler::Emit() emits the instruction before |
1844 // checking for constant pool emission, but we do not want to depend on | 1844 // checking for constant pool emission, but we do not want to depend on |
1845 // that. | 1845 // that. |
1846 { | 1846 { |
1847 Assembler::BlockConstPoolScope block_const_pool(masm); | 1847 Assembler::BlockPoolsScope block_pools(masm); |
1848 __ bind(&handler_entry); | 1848 __ bind(&handler_entry); |
1849 handler_offset_ = handler_entry.pos(); | 1849 handler_offset_ = handler_entry.pos(); |
1850 // Caught exception: Store result (exception) in the pending exception | 1850 // Caught exception: Store result (exception) in the pending exception |
1851 // field in the JSEnv and return a failure sentinel. Coming in here the | 1851 // field in the JSEnv and return a failure sentinel. Coming in here the |
1852 // fp will be invalid because the PushTryHandler below sets it to 0 to | 1852 // fp will be invalid because the PushTryHandler below sets it to 0 to |
1853 // signal the existence of the JSEntry frame. | 1853 // signal the existence of the JSEntry frame. |
1854 // TODO(jbramley): Do this in the Assembler. | 1854 // TODO(jbramley): Do this in the Assembler. |
1855 __ Mov(x10, Operand(ExternalReference(Isolate::kPendingExceptionAddress, | 1855 __ Mov(x10, Operand(ExternalReference(Isolate::kPendingExceptionAddress, |
1856 isolate))); | 1856 isolate))); |
1857 } | 1857 } |
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4943 __ Drop(x1); | 4943 __ Drop(x1); |
4944 // Return to IC Miss stub, continuation still on stack. | 4944 // Return to IC Miss stub, continuation still on stack. |
4945 __ Ret(); | 4945 __ Ret(); |
4946 } | 4946 } |
4947 | 4947 |
4948 | 4948 |
4949 void ProfileEntryHookStub::MaybeCallEntryHook(MacroAssembler* masm) { | 4949 void ProfileEntryHookStub::MaybeCallEntryHook(MacroAssembler* masm) { |
4950 if (masm->isolate()->function_entry_hook() != NULL) { | 4950 if (masm->isolate()->function_entry_hook() != NULL) { |
4951 // TODO(all): This needs to be reliably consistent with | 4951 // TODO(all): This needs to be reliably consistent with |
4952 // kReturnAddressDistanceFromFunctionStart in ::Generate. | 4952 // kReturnAddressDistanceFromFunctionStart in ::Generate. |
4953 Assembler::BlockConstPoolScope no_const_pools(masm); | 4953 Assembler::BlockPoolsScope no_pools(masm); |
4954 ProfileEntryHookStub stub; | 4954 ProfileEntryHookStub stub; |
4955 __ Push(lr); | 4955 __ Push(lr); |
4956 __ CallStub(&stub); | 4956 __ CallStub(&stub); |
4957 __ Pop(lr); | 4957 __ Pop(lr); |
4958 } | 4958 } |
4959 } | 4959 } |
4960 | 4960 |
4961 | 4961 |
4962 void ProfileEntryHookStub::Generate(MacroAssembler* masm) { | 4962 void ProfileEntryHookStub::Generate(MacroAssembler* masm) { |
4963 MacroAssembler::NoUseRealAbortsScope no_use_real_aborts(masm); | 4963 MacroAssembler::NoUseRealAbortsScope no_use_real_aborts(masm); |
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5796 MemOperand(fp, 6 * kPointerSize), | 5796 MemOperand(fp, 6 * kPointerSize), |
5797 NULL); | 5797 NULL); |
5798 } | 5798 } |
5799 | 5799 |
5800 | 5800 |
5801 #undef __ | 5801 #undef __ |
5802 | 5802 |
5803 } } // namespace v8::internal | 5803 } } // namespace v8::internal |
5804 | 5804 |
5805 #endif // V8_TARGET_ARCH_A64 | 5805 #endif // V8_TARGET_ARCH_A64 |
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