diff options
Diffstat (limited to 'src/mesa/drivers/dri/i915pipe/intel_tex.c')
| -rw-r--r-- | src/mesa/drivers/dri/i915pipe/intel_tex.c | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/src/mesa/drivers/dri/i915pipe/intel_tex.c b/src/mesa/drivers/dri/i915pipe/intel_tex.c index b08dee43bc..9e494d21ba 100644 --- a/src/mesa/drivers/dri/i915pipe/intel_tex.c +++ b/src/mesa/drivers/dri/i915pipe/intel_tex.c @@ -75,6 +75,34 @@ intelFreeTextureImageData(GLcontext * ctx, struct gl_texture_image *texImage) } + + +/* ================================================================ + * From linux kernel i386 header files, copes with odd sizes better + * than COPY_DWORDS would: + * XXX Put this in src/mesa/main/imports.h ??? + */ +#if defined(i386) || defined(__i386__) +static INLINE void * +__memcpy(void *to, const void *from, size_t n) +{ + int d0, d1, d2; + __asm__ __volatile__("rep ; movsl\n\t" + "testb $2,%b4\n\t" + "je 1f\n\t" + "movsw\n" + "1:\ttestb $1,%b4\n\t" + "je 2f\n\t" + "movsb\n" "2:":"=&c"(d0), "=&D"(d1), "=&S"(d2) + :"0"(n / 4), "q"(n), "1"((long) to), "2"((long) from) + :"memory"); + return (to); +} +#else +#define __memcpy(a,b,c) memcpy(a,b,c) +#endif + + /* The system memcpy (at least on ubuntu 5.10) has problems copying * to agp (writecombined) memory from a source which isn't 64-byte * aligned - there is a 4x performance falloff. |