1.1 --- a/src/cpu/x86/vm/sharedRuntime_x86_32.cpp Mon Jun 09 15:42:31 2014 -0700
1.2 +++ b/src/cpu/x86/vm/sharedRuntime_x86_32.cpp Tue Apr 01 09:36:49 2014 +0200
1.3 @@ -3014,11 +3014,15 @@
1.4 // restore rbp before stack bang because if stack overflow is thrown it needs to be pushed (and preserved)
1.5 __ movptr(rbp, Address(rdi, Deoptimization::UnrollBlock::initial_info_offset_in_bytes()));
1.6
1.7 - // Stack bang to make sure there's enough room for these interpreter frames.
1.8 +#ifdef ASSERT
1.9 + // Compilers generate code that bang the stack by as much as the
1.10 + // interpreter would need. So this stack banging should never
1.11 + // trigger a fault. Verify that it does not on non product builds.
1.12 if (UseStackBanging) {
1.13 __ movl(rbx, Address(rdi ,Deoptimization::UnrollBlock::total_frame_sizes_offset_in_bytes()));
1.14 __ bang_stack_size(rbx, rcx);
1.15 }
1.16 +#endif
1.17
1.18 // Load array of frame pcs into ECX
1.19 __ movptr(rcx,Address(rdi,Deoptimization::UnrollBlock::frame_pcs_offset_in_bytes()));
1.20 @@ -3240,12 +3244,15 @@
1.21 // restore rbp before stack bang because if stack overflow is thrown it needs to be pushed (and preserved)
1.22 __ movptr(rbp, Address(rdi, Deoptimization::UnrollBlock::initial_info_offset_in_bytes()));
1.23
1.24 - // Stack bang to make sure there's enough room for these interpreter frames.
1.25 +#ifdef ASSERT
1.26 + // Compilers generate code that bang the stack by as much as the
1.27 + // interpreter would need. So this stack banging should never
1.28 + // trigger a fault. Verify that it does not on non product builds.
1.29 if (UseStackBanging) {
1.30 __ movl(rbx, Address(rdi ,Deoptimization::UnrollBlock::total_frame_sizes_offset_in_bytes()));
1.31 __ bang_stack_size(rbx, rcx);
1.32 }
1.33 -
1.34 +#endif
1.35
1.36 // Load array of frame pcs into ECX
1.37 __ movl(rcx,Address(rdi,Deoptimization::UnrollBlock::frame_pcs_offset_in_bytes()));
