Mercurial > hg > truffle
comparison src/os_cpu/linux_x86/vm/os_linux_x86.cpp @ 5903:da4be62fb889
7147740: add assertions to check stack alignment on VM entry from generated code (x64)
Summary: check stack alignment on VM entry on x64.
Reviewed-by: kvn, never
| author | roland |
|---|---|
| date | Mon, 27 Feb 2012 09:17:44 +0100 |
| parents | 1d1603768966 |
| children | 957c266d8bc5 716e6ef4482a |
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| 5902:c7987cbaf2ca | 5903:da4be62fb889 |
|---|---|
| 860 address fpu_cntrl = StubRoutines::addr_fpu_cntrl_wrd_std(); | 860 address fpu_cntrl = StubRoutines::addr_fpu_cntrl_wrd_std(); |
| 861 __asm__ volatile ( "fldcw (%0)" : | 861 __asm__ volatile ( "fldcw (%0)" : |
| 862 : "r" (fpu_cntrl) : "memory"); | 862 : "r" (fpu_cntrl) : "memory"); |
| 863 #endif // !AMD64 | 863 #endif // !AMD64 |
| 864 } | 864 } |
| 865 | |
| 866 #ifndef PRODUCT | |
| 867 void os::verify_stack_alignment() { | |
| 868 #ifdef AMD64 | |
| 869 assert(((intptr_t)os::current_stack_pointer() & (StackAlignmentInBytes-1)) == 0, "incorrect stack alignment"); | |
| 870 #endif | |
| 871 } | |
| 872 #endif |