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Wrap libwfb memory access.

Browse source 
Use the READ and WRITE macros to wrap memory accesses that could be in video
memory.  Add MEMCPY_WRAPPED and MEMSET_WRAPPED macros to wrap memcpy and
memset, respectively.
This commit is contained in:
Aaron Plattner 2006-08-01 13:45:43 -07:00
commit ee02e64788
20 changed files with 641 additions and 614 deletions
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28
fb/fbpict.h
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@ -76,13 +76,13 @@
fbGetDrawable((pict)->pDrawable,__bits__,__stride__,__bpp__,__xoff__,__yoff__); \
switch (__bpp__) { \
case 32: \
(bits) = *(CARD32 *) __bits__; \
(bits) = READ((CARD32 *) __bits__); \
break; \
case 24: \
(bits) = Fetch24 ((CARD8 *) __bits__); \
break; \
case 16: \
(bits) = *(CARD16 *) __bits__; \
(bits) = READ((CARD16 *) __bits__); \
(bits) = cvt0565to8888(bits); \
break; \
default: \
@ -121,22 +121,22 @@
#if IMAGE_BYTE_ORDER == MSBFirst
#define Fetch24(a) ((unsigned long) (a) & 1 ? \
((*(a) << 16) | *((CARD16 *) ((a)+1))) : \
((*((CARD16 *) (a)) << 8) | *((a)+2)))
((READ(a) << 16) | READ((CARD16 *) ((a)+1))) : \
((READ((CARD16 *) (a)) << 8) | READ((a)+2)))
#define Store24(a,v) ((unsigned long) (a) & 1 ? \
((*(a) = (CARD8) ((v) >> 16)), \
(*((CARD16 *) ((a)+1)) = (CARD16) (v))) : \
((*((CARD16 *) (a)) = (CARD16) ((v) >> 8)), \
(*((a)+2) = (CARD8) (v))))
(WRITE(a, (CARD8) ((v) >> 16)), \
WRITE((CARD16 *) ((a)+1), (CARD16) (v))) : \
(WRITE((CARD16 *) (a), (CARD16) ((v) >> 8)), \
WRITE((a)+2, (CARD8) (v))))
#else
#define Fetch24(a) ((unsigned long) (a) & 1 ? \
((*(a)) | (*((CARD16 *) ((a)+1)) << 8)) : \
((*((CARD16 *) (a))) | (*((a)+2) << 16)))
(READ(a) | (READ((CARD16 *) ((a)+1)) << 8)) : \
(READ((CARD16 *) (a)) | (READ((a)+2) << 16)))
#define Store24(a,v) ((unsigned long) (a) & 1 ? \
((*(a) = (CARD8) (v)), \
(*((CARD16 *) ((a)+1)) = (CARD16) ((v) >> 8))) : \
((*((CARD16 *) (a)) = (CARD16) (v)),\
(*((a)+2) = (CARD8) ((v) >> 16))))
(WRITE(a, (CARD8) (v)), \
WRITE((CARD16 *) ((a)+1), (CARD16) ((v) >> 8))) : \
(WRITE((CARD16 *) (a), (CARD16) (v)),\
WRITE((a)+2, (CARD8) ((v) >> 16))))
#endif
/*