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cirrus: fix blit address mask handling 

Apply the cirrus_addr_mask to cirrus_blt_dstaddr and cirrus_blt_srcaddr
right after assigning them, in cirrus_bitblt_start(), instead of having
this all over the place in the cirrus code, and missing a few places.

Reported-by: Wolfgang Bumiller <w.bumiller@proxmox.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Message-id: 1485338996-17095-1-git-send-email-kraxel@redhat.com
This commit is contained in:
Gerd Hoffmann 2017-01-25 11:09:56 +01:00
parent 5858dd1801
commit 60cd23e851
1 changed files with 12 additions and 13 deletions
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25
hw/display/cirrus_vga.c
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@ -309,7 +309,7 @@ static bool blit_is_unsafe(struct CirrusVGAState *s, bool dst_only,
}
if (blit_region_is_unsafe(s, s->cirrus_blt_dstpitch,
s->cirrus_blt_dstaddr & s->cirrus_addr_mask)) {
s->cirrus_blt_dstaddr)) {
return true;
}
if (dst_only) {
@ -322,7 +322,7 @@ static bool blit_is_unsafe(struct CirrusVGAState *s, bool dst_only,
}
if (blit_region_is_unsafe(s, check_pitch,
s->cirrus_blt_srcaddr & s->cirrus_addr_mask)) {
s->cirrus_blt_srcaddr)) {
return true;
}
@ -689,7 +689,7 @@ static int cirrus_bitblt_common_patterncopy(CirrusVGAState * s,
{
uint8_t *dst;
dst = s->vga.vram_ptr + (s->cirrus_blt_dstaddr & s->cirrus_addr_mask);
dst = s->vga.vram_ptr + s->cirrus_blt_dstaddr;
if (blit_is_unsafe(s, false, true)) {
return 0;
@ -714,7 +714,7 @@ static int cirrus_bitblt_solidfill(CirrusVGAState *s, int blt_rop)
return 0;
}
rop_func = cirrus_fill[rop_to_index[blt_rop]][s->cirrus_blt_pixelwidth - 1];
rop_func(s, s->vga.vram_ptr + (s->cirrus_blt_dstaddr & s->cirrus_addr_mask),
rop_func(s, s->vga.vram_ptr + s->cirrus_blt_dstaddr,
s->cirrus_blt_dstpitch,
s->cirrus_blt_width, s->cirrus_blt_height);
cirrus_invalidate_region(s, s->cirrus_blt_dstaddr,
@ -732,9 +732,8 @@ static int cirrus_bitblt_solidfill(CirrusVGAState *s, int blt_rop)
static int cirrus_bitblt_videotovideo_patterncopy(CirrusVGAState * s)
{
return cirrus_bitblt_common_patterncopy(s,
s->vga.vram_ptr + ((s->cirrus_blt_srcaddr & ~7) &
s->cirrus_addr_mask));
return cirrus_bitblt_common_patterncopy(s, s->vga.vram_ptr +
(s->cirrus_blt_srcaddr & ~7));
}
static int cirrus_do_copy(CirrusVGAState *s, int dst, int src, int w, int h)
@ -788,10 +787,8 @@ static int cirrus_do_copy(CirrusVGAState *s, int dst, int src, int w, int h)
if (notify)
graphic_hw_update(s->vga.con);
(*s->cirrus_rop) (s, s->vga.vram_ptr +
(s->cirrus_blt_dstaddr & s->cirrus_addr_mask),
s->vga.vram_ptr +
(s->cirrus_blt_srcaddr & s->cirrus_addr_mask),
(*s->cirrus_rop) (s, s->vga.vram_ptr + s->cirrus_blt_dstaddr,
s->vga.vram_ptr + s->cirrus_blt_srcaddr,
s->cirrus_blt_dstpitch, s->cirrus_blt_srcpitch,
s->cirrus_blt_width, s->cirrus_blt_height);
@ -842,8 +839,7 @@ static void cirrus_bitblt_cputovideo_next(CirrusVGAState * s)
} else {
/* at least one scan line */
do {
(*s->cirrus_rop)(s, s->vga.vram_ptr +
(s->cirrus_blt_dstaddr & s->cirrus_addr_mask),
(*s->cirrus_rop)(s, s->vga.vram_ptr + s->cirrus_blt_dstaddr,
s->cirrus_bltbuf, 0, 0, s->cirrus_blt_width, 1);
cirrus_invalidate_region(s, s->cirrus_blt_dstaddr, 0,
s->cirrus_blt_width, 1);
@ -962,6 +958,9 @@ static void cirrus_bitblt_start(CirrusVGAState * s)
s->cirrus_blt_modeext = s->vga.gr[0x33];
blt_rop = s->vga.gr[0x32];
s->cirrus_blt_dstaddr &= s->cirrus_addr_mask;
s->cirrus_blt_srcaddr &= s->cirrus_addr_mask;
#ifdef DEBUG_BITBLT
printf("rop=0x%02x mode=0x%02x modeext=0x%02x w=%d h=%d dpitch=%d spitch=%d daddr=0x%08x saddr=0x%08x writemask=0x%02x\n",
blt_rop,