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Issue 9114: Do not put failures in handles.... (Closed) Base URL: http://v8.googlecode.com/svn/branches/bleeding_edge/
Patch Set: '' Created 12 years, 1 month ago
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1 // Copyright 2006-2008 the V8 project authors. All rights reserved. 1 // Copyright 2006-2008 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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4037 4037
4038 // Call a faked try-block that does the invoke. 4038 // Call a faked try-block that does the invoke.
4039 __ bl(&invoke); 4039 __ bl(&invoke);
4040 4040
4041 // Caught exception: Store result (exception) in the pending 4041 // Caught exception: Store result (exception) in the pending
4042 // exception field in the JSEnv and return a failure sentinel. 4042 // exception field in the JSEnv and return a failure sentinel.
4043 // Coming in here the fp will be invalid because the PushTryHandler below 4043 // Coming in here the fp will be invalid because the PushTryHandler below
4044 // sets it to 0 to signal the existence of the JSEntry frame. 4044 // sets it to 0 to signal the existence of the JSEntry frame.
4045 __ mov(ip, Operand(Top::pending_exception_address())); 4045 __ mov(ip, Operand(Top::pending_exception_address()));
4046 __ str(r0, MemOperand(ip)); 4046 __ str(r0, MemOperand(ip));
4047 __ mov(r0, Operand(Handle<Failure>(Failure::Exception()))); 4047 __ mov(r0, Operand(reinterpret_cast<int32_t>(Failure::Exception())));
4048 __ b(&exit); 4048 __ b(&exit);
4049 4049
4050 // Invoke: Link this frame into the handler chain. 4050 // Invoke: Link this frame into the handler chain.
4051 __ bind(&invoke); 4051 __ bind(&invoke);
4052 // Must preserve r0-r4, r5-r7 are available. 4052 // Must preserve r0-r4, r5-r7 are available.
4053 __ PushTryHandler(IN_JS_ENTRY, JS_ENTRY_HANDLER); 4053 __ PushTryHandler(IN_JS_ENTRY, JS_ENTRY_HANDLER);
4054 // If an exception not caught by another handler occurs, this handler returns 4054 // If an exception not caught by another handler occurs, this handler returns
4055 // control to the code after the bl(&invoke) above, which restores all 4055 // control to the code after the bl(&invoke) above, which restores all
4056 // kCalleeSaved registers (including cp, pp and fp) to their saved values 4056 // kCalleeSaved registers (including cp, pp and fp) to their saved values
4057 // before returning a failure to C. 4057 // before returning a failure to C.
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4229 // Slow-case: Non-function called. 4229 // Slow-case: Non-function called.
4230 __ bind(&slow); 4230 __ bind(&slow);
4231 __ mov(r0, Operand(argc_)); // Setup the number of arguments. 4231 __ mov(r0, Operand(argc_)); // Setup the number of arguments.
4232 __ InvokeBuiltin(Builtins::CALL_NON_FUNCTION, JUMP_JS); 4232 __ InvokeBuiltin(Builtins::CALL_NON_FUNCTION, JUMP_JS);
4233 } 4233 }
4234 4234
4235 4235
4236 #undef __ 4236 #undef __
4237 4237
4238 } } // namespace v8::internal 4238 } } // namespace v8::internal
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