diff options
Diffstat (limited to 'hw')
| -rw-r--r-- | hw/cirrus_vga.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/hw/cirrus_vga.c b/hw/cirrus_vga.c index e0cf458..5690719 100644 --- a/hw/cirrus_vga.c +++ b/hw/cirrus_vga.c @@ -221,15 +221,17 @@ #define CIRRUS_HOOK_NOT_HANDLED 0 #define CIRRUS_HOOK_HANDLED 1 +#define ABS(a) ((signed)(a) > 0 ? a : -a) + #define BLTUNSAFE(s) \ ( \ ( /* check dst is within bounds */ \ - (s)->cirrus_blt_height * (s)->cirrus_blt_dstpitch \ + (s)->cirrus_blt_height * ABS((s)->cirrus_blt_dstpitch) \ + ((s)->cirrus_blt_dstaddr & (s)->cirrus_addr_mask) > \ (s)->vram_size \ ) || \ ( /* check src is within bounds */ \ - (s)->cirrus_blt_height * (s)->cirrus_blt_srcpitch \ + (s)->cirrus_blt_height * ABS((s)->cirrus_blt_srcpitch) \ + ((s)->cirrus_blt_srcaddr & (s)->cirrus_addr_mask) > \ (s)->vram_size \ ) \ |