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winecrt0: Add a trampoline function to align the stack on x86_64 before continuing an exception.

This commit is contained in:
Alexandre Julliard 2010-04-08 16:12:14 +02:00
parent 655292ae00
commit 772112cfcb
1 changed files with 8 additions and 0 deletions
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8
dlls/winecrt0/exception.c
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@ -23,6 +23,12 @@
#include "winternl.h"
#include "wine/exception.h"
#if defined(__x86_64__) && defined(__ASM_GLOBAL_FUNC)
extern void __wine_unwind_trampoline(void);
/* we need an extra call to make sure the stack is correctly aligned */
__ASM_GLOBAL_FUNC( __wine_unwind_trampoline, "callq *%rax" );
#endif
/* wrapper for RtlUnwind since it clobbers registers on Windows */
void __wine_rtl_unwind( EXCEPTION_REGISTRATION_RECORD* frame, EXCEPTION_RECORD *record,
void (*target)(void) )
@ -41,6 +47,8 @@ void __wine_rtl_unwind( EXCEPTION_REGISTRATION_RECORD* frame, EXCEPTION_RECORD *
: "=a" (dummy1), "=S" (dummy2), "=D" (dummy3), "=c" (dummy4)
: "0" (RtlUnwind), "1" (frame), "2" (target), "3" (record)
: "edx", "memory" );
#elif defined(__x86_64__) && defined(__ASM_GLOBAL_FUNC)
RtlUnwind( frame, __wine_unwind_trampoline, record, target );
#else
RtlUnwind( frame, target, record, 0 );
#endif