read 32bit instead of 64bit to avoid overreading and missalignments

Originally committed as revision 4133 to svn://svn.ffmpeg.org/ffmpeg/trunk
20 years ago · 4e492bf107
parent 8c2515bbb9
commit 4e492bf107
1 changed files with 8 additions and 4 deletions
--- a/libavcodec/i386/dsputil_mmx_avg.h
+++ b/libavcodec/i386/dsputil_mmx_avg.h
@ -70,9 +70,11 @@ static void DEF(put_pixels4_l2)(uint8_t *dst, uint8_t *src1, uint8_t *src2, int
 	"movd	(%1), %%mm0		\n\t"
 	"add	%4, %1			\n\t"
 	"movd	(%1), %%mm1		\n\t"
+	"movd	(%2), %%mm2		\n\t"
+	"movd	4(%2), %%mm3		\n\t"
 	"add	%4, %1			\n\t"
-	PAVGB" (%2), %%mm0		\n\t"
-	PAVGB" 4(%2), %%mm1		\n\t"
+	PAVGB" %%mm2, %%mm0		\n\t"
+	PAVGB" %%mm3, %%mm1		\n\t"
 	"movd	%%mm0, (%3)		\n\t"
 	"add	%5, %3			\n\t"
 	"movd	%%mm1, (%3)		\n\t"
@ -80,9 +82,11 @@ static void DEF(put_pixels4_l2)(uint8_t *dst, uint8_t *src1, uint8_t *src2, int
 	"movd	(%1), %%mm0		\n\t"
 	"add	%4, %1			\n\t"
 	"movd	(%1), %%mm1		\n\t"
+	"movd	8(%2), %%mm2		\n\t"
+	"movd	12(%2), %%mm3		\n\t"
 	"add	%4, %1			\n\t"
-	PAVGB" 8(%2), %%mm0		\n\t"
-	PAVGB" 12(%2), %%mm1		\n\t"
+	PAVGB" %%mm2, %%mm0		\n\t"
+	PAVGB" %%mm3, %%mm1		\n\t"
 	"movd	%%mm0, (%3)		\n\t"
 	"add	%5, %3			\n\t"
 	"movd	%%mm1, (%3)		\n\t"