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8068945: Use RBP register as proper frame pointer in JIT compiled code on x86

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Introduce the PreserveFramePointer flag to control if RBP is used as the frame pointer or as a general purpose register.

Reviewed-by: kvn, roland, dlong, enevill, shade
This commit is contained in:
Zoltan Majo 2015-04-27 10:49:43 +02:00
parent dc67bb0a0e
commit a452b030ce
28 changed files with 519 additions and 418 deletions
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12
hotspot/src/cpu/x86/vm/c1_Runtime1_x86.cpp
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@ -754,14 +754,9 @@ OopMapSet* Runtime1::generate_handle_exception(StubID id, StubAssembler *sasm) {
// WIN64_ONLY: No need to add frame::arg_reg_save_area_bytes to SP
// since we do a leave anyway.
// Pop the return address since we are possibly changing SP (restoring from BP).
// Pop the return address.
__ leave();
__ pop(rcx);
// Restore SP from BP if the exception PC is a method handle call site.
NOT_LP64(__ get_thread(thread);)
__ cmpl(Address(thread, JavaThread::is_method_handle_return_offset()), 0);
__ cmovptr(Assembler::notEqual, rsp, rbp_mh_SP_save);
__ jmp(rcx); // jump to exception handler
break;
default: ShouldNotReachHere();
@ -832,11 +827,6 @@ void Runtime1::generate_unwind_exception(StubAssembler *sasm) {
// the pop is also necessary to simulate the effect of a ret(0)
__ pop(exception_pc);
// Restore SP from BP if the exception PC is a method handle call site.
NOT_LP64(__ get_thread(thread);)
__ cmpl(Address(thread, JavaThread::is_method_handle_return_offset()), 0);
__ cmovptr(Assembler::notEqual, rsp, rbp_mh_SP_save);
// continue at exception handler (return address removed)
// note: do *not* remove arguments when unwinding the
// activation since the caller assumes having