src/cpu/x86/vm/sharedRuntime_x86_64.cpp
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*** old/src/cpu/x86/vm/sharedRuntime_x86_64.cpp	Thu Mar  6 11:59:53 2014
--- new/src/cpu/x86/vm/sharedRuntime_x86_64.cpp	Thu Mar  6 11:59:53 2014

*** 3475,3489 **** --- 3475,3493 ---- // Pick up the initial fp we should save // restore rbp before stack bang because if stack overflow is thrown it needs to be pushed (and preserved) __ movptr(rbp, Address(rdi, Deoptimization::UnrollBlock::initial_info_offset_in_bytes())); // Stack bang to make sure there's enough room for these interpreter frames. + #ifdef ASSERT + // Compilers generate code that bang the stack by as much as the + // interpreter would need. So this stack banging should never + // trigger a fault. Verify that it does not on non product builds. if (UseStackBanging) { __ movl(rbx, Address(rdi, Deoptimization::UnrollBlock::total_frame_sizes_offset_in_bytes())); __ bang_stack_size(rbx, rcx); } + #endif // Load address of array of frame pcs into rcx __ movptr(rcx, Address(rdi, Deoptimization::UnrollBlock::frame_pcs_offset_in_bytes())); // Trash the old pc
*** 3668,3682 **** --- 3672,3690 ---- // Pick up the initial fp we should save // restore rbp before stack bang because if stack overflow is thrown it needs to be pushed (and preserved) __ movptr(rbp, Address(rdi, Deoptimization::UnrollBlock::initial_info_offset_in_bytes())); // Stack bang to make sure there's enough room for these interpreter frames. + #ifdef ASSERT + // Compilers generate code that bang the stack by as much as the + // interpreter would need. So this stack banging should never + // trigger a fault. Verify that it does not on non product builds. if (UseStackBanging) { __ movl(rbx, Address(rdi ,Deoptimization::UnrollBlock::total_frame_sizes_offset_in_bytes())); __ bang_stack_size(rbx, rcx); } + #endif // Load address of array of frame pcs into rcx (address*) __ movptr(rcx, Address(rdi, Deoptimization::UnrollBlock::frame_pcs_offset_in_bytes())); // Trash the return pc

src/cpu/x86/vm/sharedRuntime_x86_64.cpp
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