Mercurial > sdl-ios-xcode
diff src/video/SDL_stretch.c @ 4108:3feb94233f90 SDL-1.2
Fixed bug #528
OpenBSD (and possibly others) do not have executable memory by default,
so use mprotect() to allow execution of dynamic assembly block.
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Sat, 29 Dec 2007 03:50:29 +0000 |
| parents | b5a4ac87b98c |
| children | cd2ab40f1219 |
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--- a/src/video/SDL_stretch.c Sat Dec 29 02:34:53 2007 +0000 +++ b/src/video/SDL_stretch.c Sat Dec 29 03:50:29 2007 +0000 @@ -42,6 +42,15 @@ #ifdef USE_ASM_STRETCH +/* OpenBSD has non-executable memory by default, so use mprotect() */ +#ifdef __OpenBSD__ +#define USE_MPROTECT +#endif +#ifdef USE_MPROTECT +#include <sys/types.h> +#include <sys/mman.h> +#endif + #if defined(_M_IX86) || defined(i386) #define PREFIX16 0x66 #define STORE_BYTE 0xAA @@ -91,6 +100,9 @@ SDL_SetError("ASM stretch of %d bytes isn't supported\n", bpp); return(-1); } +#ifdef USE_MPROTECT + mprotect(copy_row, sizeof(copy_row), PROT_READ|PROT_WRITE|PROT_EXEC); +#endif pos = 0x10000; inc = (src_w << 16) / dst_w; eip = copy_row;