Mercurial > hg > graal-jvmci-8
comparison src/cpu/x86/vm/runtime_x86_32.cpp @ 1135:e66fd840cb6b
6893081: method handle & invokedynamic code needs additional cleanup (post 6815692, 6858164)
Summary: During the work for 6829187 we have fixed a number of basic bugs which are logically grouped with 6815692 and 6858164 but which must be reviewed and pushed separately.
Reviewed-by: kvn, never
author | twisti |
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date | Mon, 04 Jan 2010 18:38:08 +0100 |
parents | 0fbdb4381b99 |
children | 93767e6a2dfd |
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1134:0910903272e5 | 1135:e66fd840cb6b |
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41 // for the nmethod. | 41 // for the nmethod. |
42 // | 42 // |
43 // This code is entered with a jmp. | 43 // This code is entered with a jmp. |
44 // | 44 // |
45 // Arguments: | 45 // Arguments: |
46 // rax,: exception oop | 46 // rax: exception oop |
47 // rdx: exception pc | 47 // rdx: exception pc |
48 // | 48 // |
49 // Results: | 49 // Results: |
50 // rax,: exception oop | 50 // rax: exception oop |
51 // rdx: exception pc in caller or ??? | 51 // rdx: exception pc in caller or ??? |
52 // destination: exception handler of caller | 52 // destination: exception handler of caller |
53 // | 53 // |
54 // Note: the exception pc MUST be at a call (precise debug information) | 54 // Note: the exception pc MUST be at a call (precise debug information) |
55 // Only register rax, rdx, rcx are not callee saved. | 55 // Only register rax, rdx, rcx are not callee saved. |
111 __ movptr(rbp, Address(rsp, rbp_off * wordSize)); | 111 __ movptr(rbp, Address(rsp, rbp_off * wordSize)); |
112 | 112 |
113 __ addptr(rsp, return_off * wordSize); // Epilog! | 113 __ addptr(rsp, return_off * wordSize); // Epilog! |
114 __ pop(rdx); // Exception pc | 114 __ pop(rdx); // Exception pc |
115 | 115 |
116 // rax: exception handler for given <exception oop/exception pc> | |
116 | 117 |
117 // rax,: exception handler for given <exception oop/exception pc> | 118 // Restore SP from BP if the exception PC is a MethodHandle call. |
119 __ cmpl(Address(rcx, JavaThread::is_method_handle_exception_offset()), 0); | |
120 __ cmovptr(Assembler::notEqual, rsp, rbp); | |
118 | 121 |
119 // We have a handler in rax, (could be deopt blob) | 122 // We have a handler in rax, (could be deopt blob) |
120 // rdx - throwing pc, deopt blob will need it. | 123 // rdx - throwing pc, deopt blob will need it. |
121 | 124 |
122 __ push(rax); | 125 __ push(rax); |
123 | 126 |
124 // rcx contains handler address | |
125 | |
126 __ get_thread(rcx); // TLS | |
127 // Get the exception | 127 // Get the exception |
128 __ movptr(rax, Address(rcx, JavaThread::exception_oop_offset())); | 128 __ movptr(rax, Address(rcx, JavaThread::exception_oop_offset())); |
129 // Get the exception pc in case we are deoptimized | 129 // Get the exception pc in case we are deoptimized |
130 __ movptr(rdx, Address(rcx, JavaThread::exception_pc_offset())); | 130 __ movptr(rdx, Address(rcx, JavaThread::exception_pc_offset())); |
131 #ifdef ASSERT | 131 #ifdef ASSERT |
135 // Clear the exception oop so GC no longer processes it as a root. | 135 // Clear the exception oop so GC no longer processes it as a root. |
136 __ movptr(Address(rcx, JavaThread::exception_oop_offset()), NULL_WORD); | 136 __ movptr(Address(rcx, JavaThread::exception_oop_offset()), NULL_WORD); |
137 | 137 |
138 __ pop(rcx); | 138 __ pop(rcx); |
139 | 139 |
140 // rax,: exception oop | 140 // rax: exception oop |
141 // rcx: exception handler | 141 // rcx: exception handler |
142 // rdx: exception pc | 142 // rdx: exception pc |
143 __ jmp (rcx); | 143 __ jmp (rcx); |
144 | 144 |
145 // ------------- | 145 // ------------- |