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8209996: [PPC64] Fix JFR profiling

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Reviewed-by: mdoerr, simonis
This commit is contained in:
Gunter Haug 2018-08-28 14:55:06 +02:00
parent ff17347f8f
commit 00eb34a943
1 changed files with 6 additions and 5 deletions
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9
src/hotspot/cpu/ppc/frame_ppc.cpp
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@ -67,8 +67,8 @@ bool frame::safe_for_sender(JavaThread *thread) {
return false; return false;
} }
// Unextended sp must be within the stack and above or equal sp // Unextended sp must be within the stack
bool unextended_sp_safe = (unextended_sp < thread->stack_base()) && (unextended_sp >= sp); bool unextended_sp_safe = (unextended_sp < thread->stack_base());
if (!unextended_sp_safe) { if (!unextended_sp_safe) {
return false; return false;
@ -76,9 +76,10 @@ bool frame::safe_for_sender(JavaThread *thread) {
// An fp must be within the stack and above (but not equal) sp. // An fp must be within the stack and above (but not equal) sp.
bool fp_safe = (fp <= thread->stack_base()) && (fp > sp); bool fp_safe = (fp <= thread->stack_base()) && (fp > sp);
// an interpreter fp must be within the stack and above (but not equal) sp // An interpreter fp must be within the stack and above (but not equal) sp.
// Moreover, it must be at least the size of the ijava_state structure.
bool fp_interp_safe = (fp <= thread->stack_base()) && (fp > sp) && bool fp_interp_safe = (fp <= thread->stack_base()) && (fp > sp) &&
((fp - sp) >= (ijava_state_size + top_ijava_frame_abi_size)); ((fp - sp) >= ijava_state_size);
// We know sp/unextended_sp are safe, only fp is questionable here // We know sp/unextended_sp are safe, only fp is questionable here