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cirrus: stop passing around dst pointers in the blitter

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Instead pass around the address (aka offset into vga memory).  Calculate
the pointer in the rop_* functions, after applying the mask to the
address, to make sure the address stays within the valid range.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Message-id: 1489574872-8679-1-git-send-email-kraxel@redhat.com
This commit is contained in:
Gerd Hoffmann 2017-03-15 11:47:52 +01:00
parent e048dac616
commit 026aeffcb4
3 changed files with 153 additions and 125 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

20
hw/display/cirrus_vga.c
View File

@ -178,11 +178,12 @@
struct CirrusVGAState;
typedef void (*cirrus_bitblt_rop_t) (struct CirrusVGAState *s,
uint8_t * dst, const uint8_t * src,
uint32_t dstaddr, const uint8_t *src,
int dstpitch, int srcpitch,
int bltwidth, int bltheight);
typedef void (*cirrus_fill_t)(struct CirrusVGAState *s,
uint8_t *dst, int dst_pitch, int width, int height);
uint32_t dstaddr, int dst_pitch,
int width, int height);
typedef struct CirrusVGAState {
VGACommonState vga;
@ -321,14 +322,14 @@ static bool blit_is_unsafe(struct CirrusVGAState *s, bool dst_only)
}
static void cirrus_bitblt_rop_nop(CirrusVGAState *s,
uint8_t *dst,const uint8_t *src,
uint32_t dstaddr, const uint8_t *src,
int dstpitch,int srcpitch,
int bltwidth,int bltheight)
{
}
static void cirrus_bitblt_fill_nop(CirrusVGAState *s,
uint8_t *dst,
uint32_t dstaddr,
int dstpitch, int bltwidth,int bltheight)
{
}
@ -678,11 +679,8 @@ static void cirrus_invalidate_region(CirrusVGAState * s, int off_begin,
static int cirrus_bitblt_common_patterncopy(CirrusVGAState *s, bool videosrc)
{
uint32_t patternsize;
uint8_t *dst;
uint8_t *src;
dst = s->vga.vram_ptr + s->cirrus_blt_dstaddr;
if (videosrc) {
switch (s->vga.get_bpp(&s->vga)) {
case 8:
@ -711,7 +709,7 @@ static int cirrus_bitblt_common_patterncopy(CirrusVGAState *s, bool videosrc)
return 0;
}
(*s->cirrus_rop) (s, dst, src,
(*s->cirrus_rop) (s, s->cirrus_blt_dstaddr, src,
s->cirrus_blt_dstpitch, 0,
s->cirrus_blt_width, s->cirrus_blt_height);
cirrus_invalidate_region(s, s->cirrus_blt_dstaddr,
@ -730,7 +728,7 @@ 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,
rop_func(s, s->cirrus_blt_dstaddr,
s->cirrus_blt_dstpitch,
s->cirrus_blt_width, s->cirrus_blt_height);
cirrus_invalidate_region(s, s->cirrus_blt_dstaddr,
@ -797,7 +795,7 @@ static int cirrus_do_copy(CirrusVGAState *s, int dst, int src, int w, int h)
}
}
(*s->cirrus_rop) (s, s->vga.vram_ptr + s->cirrus_blt_dstaddr,
(*s->cirrus_rop) (s, 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);
@ -848,7 +846,7 @@ 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_rop)(s, 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);

161
hw/display/cirrus_vga_rop.h
View File

@ -22,31 +22,65 @@
* THE SOFTWARE.
*/
static inline void glue(rop_8_,ROP_NAME)(uint8_t *dst, uint8_t src)
static inline void glue(rop_8_, ROP_NAME)(CirrusVGAState *s,
uint32_t dstaddr, uint8_t src)
{
uint8_t *dst = &s->vga.vram_ptr[dstaddr & s->cirrus_addr_mask];
*dst = ROP_FN(*dst, src);
}
static inline void glue(rop_16_,ROP_NAME)(uint16_t *dst, uint16_t src)
static inline void glue(rop_tr_8_, ROP_NAME)(CirrusVGAState *s,
uint32_t dstaddr, uint8_t src,
uint8_t transp)
{
uint8_t *dst = &s->vga.vram_ptr[dstaddr & s->cirrus_addr_mask];
uint8_t pixel = ROP_FN(*dst, src);
if (pixel != transp) {
*dst = pixel;
}
}
static inline void glue(rop_16_, ROP_NAME)(CirrusVGAState *s,
uint32_t dstaddr, uint16_t src)
{
uint16_t *dst = (uint16_t *)
(&s->vga.vram_ptr[dstaddr & s->cirrus_addr_mask & ~1]);
*dst = ROP_FN(*dst, src);
}
static inline void glue(rop_32_,ROP_NAME)(uint32_t *dst, uint32_t src)
static inline void glue(rop_tr_16_, ROP_NAME)(CirrusVGAState *s,
uint32_t dstaddr, uint16_t src,
uint16_t transp)
{
uint16_t *dst = (uint16_t *)
(&s->vga.vram_ptr[dstaddr & s->cirrus_addr_mask & ~1]);
uint16_t pixel = ROP_FN(*dst, src);
if (pixel != transp) {
*dst = pixel;
}
}
static inline void glue(rop_32_, ROP_NAME)(CirrusVGAState *s,
uint32_t dstaddr, uint32_t src)
{
uint32_t *dst = (uint32_t *)
(&s->vga.vram_ptr[dstaddr & s->cirrus_addr_mask & ~3]);
*dst = ROP_FN(*dst, src);
}
#define ROP_OP(d, s) glue(rop_8_,ROP_NAME)(d, s)
#define ROP_OP_16(d, s) glue(rop_16_,ROP_NAME)(d, s)
#define ROP_OP_32(d, s) glue(rop_32_,ROP_NAME)(d, s)
#define ROP_OP(st, d, s) glue(rop_8_, ROP_NAME)(st, d, s)
#define ROP_OP_TR(st, d, s, t) glue(rop_tr_8_, ROP_NAME)(st, d, s, t)
#define ROP_OP_16(st, d, s) glue(rop_16_, ROP_NAME)(st, d, s)
#define ROP_OP_TR_16(st, d, s, t) glue(rop_tr_16_, ROP_NAME)(st, d, s, t)
#define ROP_OP_32(st, d, s) glue(rop_32_, ROP_NAME)(st, d, s)
#undef ROP_FN
static void
glue(cirrus_bitblt_rop_fwd_, ROP_NAME)(CirrusVGAState *s,
uint8_t *dst,const uint8_t *src,
int dstpitch,int srcpitch,
int bltwidth,int bltheight)
uint32_t dstaddr,
const uint8_t *src,
int dstpitch, int srcpitch,
int bltwidth, int bltheight)
{
int x,y;
dstpitch -= bltwidth;
@ -58,43 +92,47 @@ glue(cirrus_bitblt_rop_fwd_, ROP_NAME)(CirrusVGAState *s,
for (y = 0; y < bltheight; y++) {
for (x = 0; x < bltwidth; x++) {
ROP_OP(dst, *src);
dst++;
ROP_OP(s, dstaddr, *src);
dstaddr++;
src++;
}
dst += dstpitch;
dstaddr += dstpitch;
src += srcpitch;
}
}
static void
glue(cirrus_bitblt_rop_bkwd_, ROP_NAME)(CirrusVGAState *s,
uint8_t *dst,const uint8_t *src,
int dstpitch,int srcpitch,
int bltwidth,int bltheight)
uint32_t dstaddr,
const uint8_t *src,
int dstpitch, int srcpitch,
int bltwidth, int bltheight)
{
int x,y;
dstpitch += bltwidth;
srcpitch += bltwidth;
for (y = 0; y < bltheight; y++) {
for (x = 0; x < bltwidth; x++) {
ROP_OP(dst, *src);
dst--;
ROP_OP(s, dstaddr, *src);
dstaddr--;
src--;
}
dst += dstpitch;
dstaddr += dstpitch;
src += srcpitch;
}
}
static void
glue(glue(cirrus_bitblt_rop_fwd_transp_, ROP_NAME),_8)(CirrusVGAState *s,
uint8_t *dst,const uint8_t *src,
int dstpitch,int srcpitch,
int bltwidth,int bltheight)
uint32_t dstaddr,
const uint8_t *src,
int dstpitch,
int srcpitch,
int bltwidth,
int bltheight)
{
int x,y;
uint8_t p;
uint8_t transp = s->vga.gr[0x34];
dstpitch -= bltwidth;
srcpitch -= bltwidth;
@ -104,48 +142,50 @@ glue(glue(cirrus_bitblt_rop_fwd_transp_, ROP_NAME),_8)(CirrusVGAState *s,
for (y = 0; y < bltheight; y++) {
for (x = 0; x < bltwidth; x++) {
p = *dst;
ROP_OP(&p, *src);
if (p != s->vga.gr[0x34]) *dst = p;
dst++;
ROP_OP_TR(s, dstaddr, *src, transp);
dstaddr++;
src++;
}
dst += dstpitch;
dstaddr += dstpitch;
src += srcpitch;
}
}
static void
glue(glue(cirrus_bitblt_rop_bkwd_transp_, ROP_NAME),_8)(CirrusVGAState *s,
uint8_t *dst,const uint8_t *src,
int dstpitch,int srcpitch,
int bltwidth,int bltheight)
uint32_t dstaddr,
const uint8_t *src,
int dstpitch,
int srcpitch,
int bltwidth,
int bltheight)
{
int x,y;
uint8_t p;
uint8_t transp = s->vga.gr[0x34];
dstpitch += bltwidth;
srcpitch += bltwidth;
for (y = 0; y < bltheight; y++) {
for (x = 0; x < bltwidth; x++) {
p = *dst;
ROP_OP(&p, *src);
if (p != s->vga.gr[0x34]) *dst = p;
dst--;
ROP_OP_TR(s, dstaddr, *src, transp);
dstaddr--;
src--;
}
dst += dstpitch;
dstaddr += dstpitch;
src += srcpitch;
}
}
static void
glue(glue(cirrus_bitblt_rop_fwd_transp_, ROP_NAME),_16)(CirrusVGAState *s,
uint8_t *dst,const uint8_t *src,
int dstpitch,int srcpitch,
int bltwidth,int bltheight)
uint32_t dstaddr,
const uint8_t *src,
int dstpitch,
int srcpitch,
int bltwidth,
int bltheight)
{
int x,y;
uint8_t p1, p2;
uint16_t transp = s->vga.gr[0x34] | (uint16_t)s->vga.gr[0x35] << 8;
dstpitch -= bltwidth;
srcpitch -= bltwidth;
@ -155,46 +195,35 @@ glue(glue(cirrus_bitblt_rop_fwd_transp_, ROP_NAME),_16)(CirrusVGAState *s,
for (y = 0; y < bltheight; y++) {
for (x = 0; x < bltwidth; x+=2) {
p1 = *dst;
p2 = *(dst+1);
ROP_OP(&p1, *src);
ROP_OP(&p2, *(src + 1));
if ((p1 != s->vga.gr[0x34]) || (p2 != s->vga.gr[0x35])) {
*dst = p1;
*(dst+1) = p2;
}
dst+=2;
src+=2;
ROP_OP_TR_16(s, dstaddr, *(uint16_t *)src, transp);
dstaddr += 2;
src += 2;
}
dst += dstpitch;
dstaddr += dstpitch;
src += srcpitch;
}
}
static void
glue(glue(cirrus_bitblt_rop_bkwd_transp_, ROP_NAME),_16)(CirrusVGAState *s,
uint8_t *dst,const uint8_t *src,
int dstpitch,int srcpitch,
int bltwidth,int bltheight)
uint32_t dstaddr,
const uint8_t *src,
int dstpitch,
int srcpitch,
int bltwidth,
int bltheight)
{
int x,y;
uint8_t p1, p2;
uint16_t transp = s->vga.gr[0x34] | (uint16_t)s->vga.gr[0x35] << 8;
dstpitch += bltwidth;
srcpitch += bltwidth;
for (y = 0; y < bltheight; y++) {
for (x = 0; x < bltwidth; x+=2) {
p1 = *(dst-1);
p2 = *dst;
ROP_OP(&p1, *(src - 1));
ROP_OP(&p2, *src);
if ((p1 != s->vga.gr[0x34]) || (p2 != s->vga.gr[0x35])) {
*(dst-1) = p1;
*dst = p2;
}
dst-=2;
src-=2;
ROP_OP_TR_16(s, dstaddr, *(uint16_t *)src, transp);
dstaddr -= 2;
src -= 2;
}
dst += dstpitch;
dstaddr += dstpitch;
src += srcpitch;
}
}

97
hw/display/cirrus_vga_rop2.h
View File

@ -23,27 +23,29 @@
*/
#if DEPTH == 8
#define PUTPIXEL() ROP_OP(&d[0], col)
#define PUTPIXEL(s, a, c) ROP_OP(s, a, c)
#elif DEPTH == 16
#define PUTPIXEL() ROP_OP_16((uint16_t *)&d[0], col)
#define PUTPIXEL(s, a, c) ROP_OP_16(s, a, c)
#elif DEPTH == 24
#define PUTPIXEL() ROP_OP(&d[0], col); \
ROP_OP(&d[1], (col >> 8)); \
ROP_OP(&d[2], (col >> 16))
#define PUTPIXEL(s, a, c) do { \
ROP_OP(s, a, c); \
ROP_OP(s, a + 1, (col >> 8)); \
ROP_OP(s, a + 2, (col >> 16)); \
} while (0)
#elif DEPTH == 32
#define PUTPIXEL() ROP_OP_32(((uint32_t *)&d[0]), col)
#define PUTPIXEL(s, a, c) ROP_OP_32(s, a, c)
#else
#error unsupported DEPTH
#endif
static void
glue(glue(glue(cirrus_patternfill_, ROP_NAME), _),DEPTH)
(CirrusVGAState * s, uint8_t * dst,
const uint8_t * src,
(CirrusVGAState *s, uint32_t dstaddr,
const uint8_t *src,
int dstpitch, int srcpitch,
int bltwidth, int bltheight)
{
uint8_t *d;
uint32_t addr;
int x, y, pattern_y, pattern_pitch, pattern_x;
unsigned int col;
const uint8_t *src1;
@ -63,7 +65,7 @@ glue(glue(glue(cirrus_patternfill_, ROP_NAME), _),DEPTH)
pattern_y = s->cirrus_blt_srcaddr & 7;
for(y = 0; y < bltheight; y++) {
pattern_x = skipleft;
d = dst + skipleft;
addr = dstaddr + skipleft;
src1 = src + pattern_y * pattern_pitch;
for (x = skipleft; x < bltwidth; x += (DEPTH / 8)) {
#if DEPTH == 8
@ -82,23 +84,23 @@ glue(glue(glue(cirrus_patternfill_, ROP_NAME), _),DEPTH)
col = ((uint32_t *)(src1 + pattern_x))[0];
pattern_x = (pattern_x + 4) & 31;
#endif
PUTPIXEL();
d += (DEPTH / 8);
PUTPIXEL(s, addr, col);
addr += (DEPTH / 8);
}
pattern_y = (pattern_y + 1) & 7;
dst += dstpitch;
dstaddr += dstpitch;
}
}
/* NOTE: srcpitch is ignored */
static void
glue(glue(glue(cirrus_colorexpand_transp_, ROP_NAME), _),DEPTH)
(CirrusVGAState * s, uint8_t * dst,
const uint8_t * src,
(CirrusVGAState *s, uint32_t dstaddr,
const uint8_t *src,
int dstpitch, int srcpitch,
int bltwidth, int bltheight)
{
uint8_t *d;
uint32_t addr;
int x, y;
unsigned bits, bits_xor;
unsigned int col;
@ -123,7 +125,7 @@ glue(glue(glue(cirrus_colorexpand_transp_, ROP_NAME), _),DEPTH)
for(y = 0; y < bltheight; y++) {
bitmask = 0x80 >> srcskipleft;
bits = *src++ ^ bits_xor;
d = dst + dstskipleft;
addr = dstaddr + dstskipleft;
for (x = dstskipleft; x < bltwidth; x += (DEPTH / 8)) {
if ((bitmask & 0xff) == 0) {
bitmask = 0x80;
@ -131,24 +133,24 @@ glue(glue(glue(cirrus_colorexpand_transp_, ROP_NAME), _),DEPTH)
}
index = (bits & bitmask);
if (index) {
PUTPIXEL();
PUTPIXEL(s, addr, col);
}
d += (DEPTH / 8);
addr += (DEPTH / 8);
bitmask >>= 1;
}
dst += dstpitch;
dstaddr += dstpitch;
}
}
static void
glue(glue(glue(cirrus_colorexpand_, ROP_NAME), _),DEPTH)
(CirrusVGAState * s, uint8_t * dst,
const uint8_t * src,
(CirrusVGAState *s, uint32_t dstaddr,
const uint8_t *src,
int dstpitch, int srcpitch,
int bltwidth, int bltheight)
{
uint32_t colors[2];
uint8_t *d;
uint32_t addr;
int x, y;
unsigned bits;
unsigned int col;
@ -161,29 +163,29 @@ glue(glue(glue(cirrus_colorexpand_, ROP_NAME), _),DEPTH)
for(y = 0; y < bltheight; y++) {
bitmask = 0x80 >> srcskipleft;
bits = *src++;
d = dst + dstskipleft;
addr = dstaddr + dstskipleft;
for (x = dstskipleft; x < bltwidth; x += (DEPTH / 8)) {
if ((bitmask & 0xff) == 0) {
bitmask = 0x80;
bits = *src++;
}
col = colors[!!(bits & bitmask)];
PUTPIXEL();
d += (DEPTH / 8);
PUTPIXEL(s, addr, col);
addr += (DEPTH / 8);
bitmask >>= 1;
}
dst += dstpitch;
dstaddr += dstpitch;
}
}
static void
glue(glue(glue(cirrus_colorexpand_pattern_transp_, ROP_NAME), _),DEPTH)
(CirrusVGAState * s, uint8_t * dst,
const uint8_t * src,
(CirrusVGAState *s, uint32_t dstaddr,
const uint8_t *src,
int dstpitch, int srcpitch,
int bltwidth, int bltheight)
{
uint8_t *d;
uint32_t addr;
int x, y, bitpos, pattern_y;
unsigned int bits, bits_xor;
unsigned int col;
@ -207,28 +209,28 @@ glue(glue(glue(cirrus_colorexpand_pattern_transp_, ROP_NAME), _),DEPTH)
for(y = 0; y < bltheight; y++) {
bits = src[pattern_y] ^ bits_xor;
bitpos = 7 - srcskipleft;
d = dst + dstskipleft;
addr = dstaddr + dstskipleft;
for (x = dstskipleft; x < bltwidth; x += (DEPTH / 8)) {
if ((bits >> bitpos) & 1) {
PUTPIXEL();
PUTPIXEL(s, addr, col);
}
d += (DEPTH / 8);
addr += (DEPTH / 8);
bitpos = (bitpos - 1) & 7;
}
pattern_y = (pattern_y + 1) & 7;
dst += dstpitch;
dstaddr += dstpitch;
}
}
static void
glue(glue(glue(cirrus_colorexpand_pattern_, ROP_NAME), _),DEPTH)
(CirrusVGAState * s, uint8_t * dst,
const uint8_t * src,
(CirrusVGAState *s, uint32_t dstaddr,
const uint8_t *src,
int dstpitch, int srcpitch,
int bltwidth, int bltheight)
{
uint32_t colors[2];
uint8_t *d;
uint32_t addr;
int x, y, bitpos, pattern_y;
unsigned int bits;
unsigned int col;
@ -242,38 +244,37 @@ glue(glue(glue(cirrus_colorexpand_pattern_, ROP_NAME), _),DEPTH)
for(y = 0; y < bltheight; y++) {
bits = src[pattern_y];
bitpos = 7 - srcskipleft;
d = dst + dstskipleft;
addr = dstaddr + dstskipleft;
for (x = dstskipleft; x < bltwidth; x += (DEPTH / 8)) {
col = colors[(bits >> bitpos) & 1];
PUTPIXEL();
d += (DEPTH / 8);
PUTPIXEL(s, addr, col);
addr += (DEPTH / 8);
bitpos = (bitpos - 1) & 7;
}
pattern_y = (pattern_y + 1) & 7;
dst += dstpitch;
dstaddr += dstpitch;
}
}
static void
glue(glue(glue(cirrus_fill_, ROP_NAME), _),DEPTH)
(CirrusVGAState *s,
uint8_t *dst, int dst_pitch,
uint32_t dstaddr, int dst_pitch,
int width, int height)
{
uint8_t *d, *d1;
uint32_t addr;
uint32_t col;
int x, y;
col = s->cirrus_blt_fgcol;
d1 = dst;
for(y = 0; y < height; y++) {
d = d1;
addr = dstaddr;
for(x = 0; x < width; x += (DEPTH / 8)) {
PUTPIXEL();
d += (DEPTH / 8);
PUTPIXEL(s, addr, col);
addr += (DEPTH / 8);
}
d1 += dst_pitch;
dstaddr += dst_pitch;
}
}