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comparison src/cpu/x86/vm/templateInterpreter_x86_64.cpp @ 8328:6b6cbd8b8914

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Support deoptimizing before the entry to a synchronized method.
author Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
date Sun, 17 Mar 2013 21:20:39 +0100
parents 5fc51c1ecdeb
children b9a918201d47
comparison
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8327:e24fb475bdec 8328:6b6cbd8b8914
202 202
203 return entry; 203 return entry;
204 } 204 }
205 205
206 206
207 address TemplateInterpreterGenerator::generate_deopt_entry_for(TosState state, 207 address InterpreterGenerator::generate_deopt_entry_for(TosState state,
208 int step) { 208 int step) {
209 address entry = __ pc(); 209 address entry = __ pc();
210 // NULL last_sp until next java call 210 // NULL last_sp until next java call
211 __ movptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), (int32_t)NULL_WORD); 211 __ movptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), (int32_t)NULL_WORD);
212 __ restore_bcp(); 212 __ restore_bcp();
213 __ restore_locals(); 213 __ restore_locals();
214 // Check if we need to take lock at entry of synchronized method.
215 {
216 Label L;
217 __ cmpb(Address(r15_thread, Thread::pending_monitorenter_offset()), 0);
218 __ jcc(Assembler::zero, L);
219 // Clear flag.
220 __ movb(Address(r15_thread, Thread::pending_monitorenter_offset()), 0);
221 // Satisfy calling convention for lock_method().
222 __ get_method(rbx);
223 // Take lock.
224 lock_method();
225 __ bind(L);
226 }
214 // handle exceptions 227 // handle exceptions
215 { 228 {
216 Label L; 229 Label L;
217 __ cmpptr(Address(r15_thread, Thread::pending_exception_offset()), (int32_t) NULL_WORD); 230 __ cmpptr(Address(r15_thread, Thread::pending_exception_offset()), (int32_t) NULL_WORD);
218 __ jcc(Assembler::zero, L); 231 __ jcc(Assembler::zero, L);