diff options
| -rw-r--r-- | hw/display/cirrus_vga.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/hw/display/cirrus_vga.c b/hw/display/cirrus_vga.c index 379910db2d..0f05e4596e 100644 --- a/hw/display/cirrus_vga.c +++ b/hw/display/cirrus_vga.c @@ -661,9 +661,14 @@ static void cirrus_invalidate_region(CirrusVGAState * s, int off_begin, int off_cur; int off_cur_end; + if (off_pitch < 0) { + off_begin -= bytesperline - 1; + } + for (y = 0; y < lines; y++) { off_cur = off_begin; off_cur_end = (off_cur + bytesperline) & s->cirrus_addr_mask; + assert(off_cur_end >= off_cur); memory_region_set_dirty(&s->vga.vram, off_cur, off_cur_end - off_cur); off_begin += off_pitch; } |