diff options
| -rw-r--r-- | qemu-os-win32.h | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/qemu-os-win32.h b/qemu-os-win32.h index b6533c0979..753679b194 100644 --- a/qemu-os-win32.h +++ b/qemu-os-win32.h @@ -56,6 +56,15 @@ # define EWOULDBLOCK WSAEWOULDBLOCK #endif +#if defined(_WIN64) +/* On w64, setjmp is implemented by _setjmp which needs a second parameter. + * If this parameter is NULL, longjump does no stack unwinding. + * That is what we need for QEMU. Passing the value of register rsp (default) + * lets longjmp try a stack unwinding which will crash with generated code. */ +# undef setjmp +# define setjmp(env) _setjmp(env, NULL) +#endif + /* Declaration of ffs() is missing in MinGW's strings.h. */ int ffs(int i); |