Alexandre Julliard : winecrt0: Store the appropriate longjmp() function in the exception frame.

[Alexandre Julliard]

Module: wine
Branch: master
Commit: 9177a75acc36b6d593917262fb62f42098a1fcf2
URL:    https://source.winehq.org/git/wine.git/?a=commit;h=9177a75acc36b6d593917262f...

Author: Alexandre Julliard 
Date:   Tue May 14 13:14:35 2019 +0200

winecrt0: Store the appropriate longjmp() function in the exception frame.

Signed-off-by: Alexandre Julliard

---

dlls/winecrt0/exception.c | 2 +-
 include/wine/exception.h  | 9 +++++++--
 2 files changed, 8 insertions(+), 3 deletions(-)

diff --git a/dlls/winecrt0/exception.c b/dlls/winecrt0/exception.c
index 8a7f2a5..98132fa 100644
--- a/dlls/winecrt0/exception.c
+++ b/dlls/winecrt0/exception.c
@@ -59,7 +59,7 @@ static void DECLSPEC_NORETURN unwind_target(void)
 {
     __WINE_FRAME *wine_frame = (__WINE_FRAME *)__wine_get_frame();
     __wine_pop_frame( &wine_frame->frame );
-    siglongjmp( wine_frame->jmp, 1 );
+    for (;;) wine_frame->longjmp( wine_frame->jmp, 1 );
 }

static void DECLSPEC_NORETURN unwind_frame( EXCEPTION_RECORD *record,
diff --git a/include/wine/exception.h b/include/wine/exception.h
index e93968f..f30807e 100644
--- a/include/wine/exception.h
+++ b/include/wine/exception.h
@@ -94,8 +94,8 @@ extern "C" {

#if defined(__MINGW32__) || defined(__CYGWIN__) || defined(__WINE_SETJMP_H)
 #define sigjmp_buf jmp_buf
-#define sigsetjmp(buf,sigs) setjmp(buf)
-#define siglongjmp(buf,val) longjmp(buf,val)
+static inline int sigsetjmp( sigjmp_buf buf, int sigs ) { return setjmp( buf ); }
+static inline void siglongjmp( sigjmp_buf buf, int val ) { longjmp( buf, val ); }
 #endif

extern void __wine_rtl_unwind( EXCEPTION_REGISTRATION_RECORD* frame, EXCEPTION_RECORD *record,
@@ -139,6 +139,7 @@ extern DWORD __wine_finally_ctx_handler( EXCEPTION_RECORD *record,
          } else { \
              __f.frame.Handler = __wine_exception_handler; \
              __f.u.filter = (func); \
+             __f.longjmp = siglongjmp; \
              if (sigsetjmp( __f.jmp, 0 )) { \
                  const __WINE_FRAME * const __eptr __attribute__((unused)) = &__f; \
                  do {
@@ -151,6 +152,7 @@ extern DWORD __wine_finally_ctx_handler( EXCEPTION_RECORD *record,
              __f.frame.Handler = __wine_exception_ctx_handler; \
              __f.u.filter_ctx = (func); \
              __f.ctx = context; \
+             __f.longjmp = siglongjmp; \
              if (sigsetjmp( __f.jmp, 0 )) { \
                  const __WINE_FRAME * const __eptr __attribute__((unused)) = &__f; \
                  do {
@@ -162,6 +164,7 @@ extern DWORD __wine_finally_ctx_handler( EXCEPTION_RECORD *record,
              break; \
          } else { \
              __f.frame.Handler = __wine_exception_handler_page_fault; \
+             __f.longjmp = siglongjmp; \
              if (sigsetjmp( __f.jmp, 0 )) { \
                  const __WINE_FRAME * const __eptr __attribute__((unused)) = &__f; \
                  do {
@@ -173,6 +176,7 @@ extern DWORD __wine_finally_ctx_handler( EXCEPTION_RECORD *record,
              break; \
          } else { \
              __f.frame.Handler = __wine_exception_handler_all; \
+             __f.longjmp = siglongjmp; \
              if (sigsetjmp( __f.jmp, 0 )) { \
                  const __WINE_FRAME * const __eptr __attribute__((unused)) = &__f; \
                  do {
@@ -237,6 +241,7 @@ typedef struct __tagWINE_FRAME
     } u;
     void *ctx;
     sigjmp_buf jmp;
+    void (*longjmp)(sigjmp_buf,int);
     /* hack to make GetExceptionCode() work in handler */
     DWORD ExceptionCode;
     const struct __tagWINE_FRAME *ExceptionRecord;