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Issue 343035: Reverting 3159, 3151 and 3150 (Closed) Base URL: http://v8.googlecode.com/svn/branches/bleeding_edge/
Patch Set: Created 11 years, 1 month ago
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1 // Copyright 2006-2009 the V8 project authors. All rights reserved. 1 // Copyright 2006-2009 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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5788 #endif 5788 #endif
5789 ASSERT(StackHandlerConstants::kPCOffset == 3 * kPointerSize); 5789 ASSERT(StackHandlerConstants::kPCOffset == 3 * kPointerSize);
5790 __ pop(pc); 5790 __ pop(pc);
5791 } 5791 }
5792 5792
5793 5793
5794 void CEntryStub::GenerateCore(MacroAssembler* masm, 5794 void CEntryStub::GenerateCore(MacroAssembler* masm,
5795 Label* throw_normal_exception, 5795 Label* throw_normal_exception,
5796 Label* throw_termination_exception, 5796 Label* throw_termination_exception,
5797 Label* throw_out_of_memory_exception, 5797 Label* throw_out_of_memory_exception,
5798 ExitFrame::Mode mode, 5798 StackFrame::Type frame_type,
5799 bool do_gc, 5799 bool do_gc,
5800 bool always_allocate) { 5800 bool always_allocate) {
5801 // r0: result parameter for PerformGC, if any 5801 // r0: result parameter for PerformGC, if any
5802 // r4: number of arguments including receiver (C callee-saved) 5802 // r4: number of arguments including receiver (C callee-saved)
5803 // r5: pointer to builtin function (C callee-saved) 5803 // r5: pointer to builtin function (C callee-saved)
5804 // r6: pointer to the first argument (C callee-saved) 5804 // r6: pointer to the first argument (C callee-saved)
5805 5805
5806 if (do_gc) { 5806 if (do_gc) {
5807 // Passing r0. 5807 // Passing r0.
5808 ExternalReference gc_reference = ExternalReference::perform_gc_function(); 5808 ExternalReference gc_reference = ExternalReference::perform_gc_function();
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5848 ASSERT(((kFailureTag + 1) & kFailureTagMask) == 0); 5848 ASSERT(((kFailureTag + 1) & kFailureTagMask) == 0);
5849 // Lower 2 bits of r2 are 0 iff r0 has failure tag. 5849 // Lower 2 bits of r2 are 0 iff r0 has failure tag.
5850 __ add(r2, r0, Operand(1)); 5850 __ add(r2, r0, Operand(1));
5851 __ tst(r2, Operand(kFailureTagMask)); 5851 __ tst(r2, Operand(kFailureTagMask));
5852 __ b(eq, &failure_returned); 5852 __ b(eq, &failure_returned);
5853 5853
5854 // Exit C frame and return. 5854 // Exit C frame and return.
5855 // r0:r1: result 5855 // r0:r1: result
5856 // sp: stack pointer 5856 // sp: stack pointer
5857 // fp: frame pointer 5857 // fp: frame pointer
5858 __ LeaveExitFrame(mode); 5858 __ LeaveExitFrame(frame_type);
5859 5859
5860 // check if we should retry or throw exception 5860 // check if we should retry or throw exception
5861 Label retry; 5861 Label retry;
5862 __ bind(&failure_returned); 5862 __ bind(&failure_returned);
5863 ASSERT(Failure::RETRY_AFTER_GC == 0); 5863 ASSERT(Failure::RETRY_AFTER_GC == 0);
5864 __ tst(r0, Operand(((1 << kFailureTypeTagSize) - 1) << kFailureTagSize)); 5864 __ tst(r0, Operand(((1 << kFailureTypeTagSize) - 1) << kFailureTagSize));
5865 __ b(eq, &retry); 5865 __ b(eq, &retry);
5866 5866
5867 // Special handling of out of memory exceptions. 5867 // Special handling of out of memory exceptions.
5868 Failure* out_of_memory = Failure::OutOfMemoryException(); 5868 Failure* out_of_memory = Failure::OutOfMemoryException();
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5894 // r1: pointer to builtin function 5894 // r1: pointer to builtin function
5895 // fp: frame pointer (restored after C call) 5895 // fp: frame pointer (restored after C call)
5896 // sp: stack pointer (restored as callee's sp after C call) 5896 // sp: stack pointer (restored as callee's sp after C call)
5897 // cp: current context (C callee-saved) 5897 // cp: current context (C callee-saved)
5898 5898
5899 // NOTE: Invocations of builtins may return failure objects 5899 // NOTE: Invocations of builtins may return failure objects
5900 // instead of a proper result. The builtin entry handles 5900 // instead of a proper result. The builtin entry handles
5901 // this by performing a garbage collection and retrying the 5901 // this by performing a garbage collection and retrying the
5902 // builtin once. 5902 // builtin once.
5903 5903
5904 ExitFrame::Mode mode = is_debug_break 5904 StackFrame::Type frame_type = is_debug_break
5905 ? ExitFrame::MODE_DEBUG 5905 ? StackFrame::EXIT_DEBUG
5906 : ExitFrame::MODE_NORMAL; 5906 : StackFrame::EXIT;
5907 5907
5908 // Enter the exit frame that transitions from JavaScript to C++. 5908 // Enter the exit frame that transitions from JavaScript to C++.
5909 __ EnterExitFrame(mode); 5909 __ EnterExitFrame(frame_type);
5910 5910
5911 // r4: number of arguments (C callee-saved) 5911 // r4: number of arguments (C callee-saved)
5912 // r5: pointer to builtin function (C callee-saved) 5912 // r5: pointer to builtin function (C callee-saved)
5913 // r6: pointer to first argument (C callee-saved) 5913 // r6: pointer to first argument (C callee-saved)
5914 5914
5915 Label throw_normal_exception; 5915 Label throw_normal_exception;
5916 Label throw_termination_exception; 5916 Label throw_termination_exception;
5917 Label throw_out_of_memory_exception; 5917 Label throw_out_of_memory_exception;
5918 5918
5919 // Call into the runtime system. 5919 // Call into the runtime system.
5920 GenerateCore(masm, 5920 GenerateCore(masm,
5921 &throw_normal_exception, 5921 &throw_normal_exception,
5922 &throw_termination_exception, 5922 &throw_termination_exception,
5923 &throw_out_of_memory_exception, 5923 &throw_out_of_memory_exception,
5924 mode, 5924 frame_type,
5925 false, 5925 false,
5926 false); 5926 false);
5927 5927
5928 // Do space-specific GC and retry runtime call. 5928 // Do space-specific GC and retry runtime call.
5929 GenerateCore(masm, 5929 GenerateCore(masm,
5930 &throw_normal_exception, 5930 &throw_normal_exception,
5931 &throw_termination_exception, 5931 &throw_termination_exception,
5932 &throw_out_of_memory_exception, 5932 &throw_out_of_memory_exception,
5933 mode, 5933 frame_type,
5934 true, 5934 true,
5935 false); 5935 false);
5936 5936
5937 // Do full GC and retry runtime call one final time. 5937 // Do full GC and retry runtime call one final time.
5938 Failure* failure = Failure::InternalError(); 5938 Failure* failure = Failure::InternalError();
5939 __ mov(r0, Operand(reinterpret_cast<int32_t>(failure))); 5939 __ mov(r0, Operand(reinterpret_cast<int32_t>(failure)));
5940 GenerateCore(masm, 5940 GenerateCore(masm,
5941 &throw_normal_exception, 5941 &throw_normal_exception,
5942 &throw_termination_exception, 5942 &throw_termination_exception,
5943 &throw_out_of_memory_exception, 5943 &throw_out_of_memory_exception,
5944 mode, 5944 frame_type,
5945 true, 5945 true,
5946 true); 5946 true);
5947 5947
5948 __ bind(&throw_out_of_memory_exception); 5948 __ bind(&throw_out_of_memory_exception);
5949 GenerateThrowUncatchable(masm, OUT_OF_MEMORY); 5949 GenerateThrowUncatchable(masm, OUT_OF_MEMORY);
5950 5950
5951 __ bind(&throw_termination_exception); 5951 __ bind(&throw_termination_exception);
5952 GenerateThrowUncatchable(masm, TERMINATION); 5952 GenerateThrowUncatchable(masm, TERMINATION);
5953 5953
5954 __ bind(&throw_normal_exception); 5954 __ bind(&throw_normal_exception);
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6261 int CompareStub::MinorKey() { 6261 int CompareStub::MinorKey() {
6262 // Encode the two parameters in a unique 16 bit value. 6262 // Encode the two parameters in a unique 16 bit value.
6263 ASSERT(static_cast<unsigned>(cc_) >> 28 < (1 << 15)); 6263 ASSERT(static_cast<unsigned>(cc_) >> 28 < (1 << 15));
6264 return (static_cast<unsigned>(cc_) >> 27) | (strict_ ? 1 : 0); 6264 return (static_cast<unsigned>(cc_) >> 27) | (strict_ ? 1 : 0);
6265 } 6265 }
6266 6266
6267 6267
6268 #undef __ 6268 #undef __
6269 6269
6270 } } // namespace v8::internal 6270 } } // namespace v8::internal
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