mirror of
https://github.com/xemu-project/xemu.git
synced 2024-12-18 09:19:53 +00:00
2cdaca90dd
For blizzard, pl110 and tc6393xb this is harmless, but for pxa2xx Coverity noticed that it is used inside an "if" statement. Fix it because it's the file with the highest number of defects in the whole QEMU tree! Use "do...while (0)", or just remove the semicolon if there's a single statement in the macro. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
448 lines
12 KiB
C
448 lines
12 KiB
C
/*
|
|
* Intel XScale PXA255/270 LCDC emulation.
|
|
*
|
|
* Copyright (c) 2006 Openedhand Ltd.
|
|
* Written by Andrzej Zaborowski <balrog@zabor.org>
|
|
*
|
|
* This code is licensed under the GPLv2.
|
|
*
|
|
* Framebuffer format conversion routines.
|
|
*/
|
|
|
|
# define SKIP_PIXEL(to) to += deststep
|
|
#if BITS == 8
|
|
# define COPY_PIXEL(to, from) do { *to = from; SKIP_PIXEL(to); } while (0)
|
|
#elif BITS == 15 || BITS == 16
|
|
# define COPY_PIXEL(to, from) \
|
|
do { \
|
|
*(uint16_t *) to = from; \
|
|
SKIP_PIXEL(to); \
|
|
} while (0)
|
|
#elif BITS == 24
|
|
# define COPY_PIXEL(to, from) \
|
|
do { \
|
|
*(uint16_t *) to = from; \
|
|
*(to + 2) = (from) >> 16; \
|
|
SKIP_PIXEL(to); \
|
|
} while (0)
|
|
#elif BITS == 32
|
|
# define COPY_PIXEL(to, from) \
|
|
do { \
|
|
*(uint32_t *) to = from; \
|
|
SKIP_PIXEL(to); \
|
|
} while (0)
|
|
#else
|
|
# error unknown bit depth
|
|
#endif
|
|
|
|
#ifdef HOST_WORDS_BIGENDIAN
|
|
# define SWAP_WORDS 1
|
|
#endif
|
|
|
|
#define FN_2(x) FN(x + 1) FN(x)
|
|
#define FN_4(x) FN_2(x + 2) FN_2(x)
|
|
|
|
static void glue(pxa2xx_draw_line2_, BITS)(void *opaque,
|
|
uint8_t *dest, const uint8_t *src, int width, int deststep)
|
|
{
|
|
uint32_t *palette = opaque;
|
|
uint32_t data;
|
|
while (width > 0) {
|
|
data = *(uint32_t *) src;
|
|
#define FN(x) COPY_PIXEL(dest, palette[(data >> ((x) * 2)) & 3]);
|
|
#ifdef SWAP_WORDS
|
|
FN_4(12)
|
|
FN_4(8)
|
|
FN_4(4)
|
|
FN_4(0)
|
|
#else
|
|
FN_4(0)
|
|
FN_4(4)
|
|
FN_4(8)
|
|
FN_4(12)
|
|
#endif
|
|
#undef FN
|
|
width -= 16;
|
|
src += 4;
|
|
}
|
|
}
|
|
|
|
static void glue(pxa2xx_draw_line4_, BITS)(void *opaque,
|
|
uint8_t *dest, const uint8_t *src, int width, int deststep)
|
|
{
|
|
uint32_t *palette = opaque;
|
|
uint32_t data;
|
|
while (width > 0) {
|
|
data = *(uint32_t *) src;
|
|
#define FN(x) COPY_PIXEL(dest, palette[(data >> ((x) * 4)) & 0xf]);
|
|
#ifdef SWAP_WORDS
|
|
FN_2(6)
|
|
FN_2(4)
|
|
FN_2(2)
|
|
FN_2(0)
|
|
#else
|
|
FN_2(0)
|
|
FN_2(2)
|
|
FN_2(4)
|
|
FN_2(6)
|
|
#endif
|
|
#undef FN
|
|
width -= 8;
|
|
src += 4;
|
|
}
|
|
}
|
|
|
|
static void glue(pxa2xx_draw_line8_, BITS)(void *opaque,
|
|
uint8_t *dest, const uint8_t *src, int width, int deststep)
|
|
{
|
|
uint32_t *palette = opaque;
|
|
uint32_t data;
|
|
while (width > 0) {
|
|
data = *(uint32_t *) src;
|
|
#define FN(x) COPY_PIXEL(dest, palette[(data >> (x)) & 0xff]);
|
|
#ifdef SWAP_WORDS
|
|
FN(24)
|
|
FN(16)
|
|
FN(8)
|
|
FN(0)
|
|
#else
|
|
FN(0)
|
|
FN(8)
|
|
FN(16)
|
|
FN(24)
|
|
#endif
|
|
#undef FN
|
|
width -= 4;
|
|
src += 4;
|
|
}
|
|
}
|
|
|
|
static void glue(pxa2xx_draw_line16_, BITS)(void *opaque,
|
|
uint8_t *dest, const uint8_t *src, int width, int deststep)
|
|
{
|
|
uint32_t data;
|
|
unsigned int r, g, b;
|
|
while (width > 0) {
|
|
data = *(uint32_t *) src;
|
|
#ifdef SWAP_WORDS
|
|
data = bswap32(data);
|
|
#endif
|
|
b = (data & 0x1f) << 3;
|
|
data >>= 5;
|
|
g = (data & 0x3f) << 2;
|
|
data >>= 6;
|
|
r = (data & 0x1f) << 3;
|
|
data >>= 5;
|
|
COPY_PIXEL(dest, glue(rgb_to_pixel, BITS)(r, g, b));
|
|
b = (data & 0x1f) << 3;
|
|
data >>= 5;
|
|
g = (data & 0x3f) << 2;
|
|
data >>= 6;
|
|
r = (data & 0x1f) << 3;
|
|
COPY_PIXEL(dest, glue(rgb_to_pixel, BITS)(r, g, b));
|
|
width -= 2;
|
|
src += 4;
|
|
}
|
|
}
|
|
|
|
static void glue(pxa2xx_draw_line16t_, BITS)(void *opaque,
|
|
uint8_t *dest, const uint8_t *src, int width, int deststep)
|
|
{
|
|
uint32_t data;
|
|
unsigned int r, g, b;
|
|
while (width > 0) {
|
|
data = *(uint32_t *) src;
|
|
#ifdef SWAP_WORDS
|
|
data = bswap32(data);
|
|
#endif
|
|
b = (data & 0x1f) << 3;
|
|
data >>= 5;
|
|
g = (data & 0x1f) << 3;
|
|
data >>= 5;
|
|
r = (data & 0x1f) << 3;
|
|
data >>= 5;
|
|
if (data & 1)
|
|
SKIP_PIXEL(dest);
|
|
else
|
|
COPY_PIXEL(dest, glue(rgb_to_pixel, BITS)(r, g, b));
|
|
data >>= 1;
|
|
b = (data & 0x1f) << 3;
|
|
data >>= 5;
|
|
g = (data & 0x1f) << 3;
|
|
data >>= 5;
|
|
r = (data & 0x1f) << 3;
|
|
data >>= 5;
|
|
if (data & 1)
|
|
SKIP_PIXEL(dest);
|
|
else
|
|
COPY_PIXEL(dest, glue(rgb_to_pixel, BITS)(r, g, b));
|
|
width -= 2;
|
|
src += 4;
|
|
}
|
|
}
|
|
|
|
static void glue(pxa2xx_draw_line18_, BITS)(void *opaque,
|
|
uint8_t *dest, const uint8_t *src, int width, int deststep)
|
|
{
|
|
uint32_t data;
|
|
unsigned int r, g, b;
|
|
while (width > 0) {
|
|
data = *(uint32_t *) src;
|
|
#ifdef SWAP_WORDS
|
|
data = bswap32(data);
|
|
#endif
|
|
b = (data & 0x3f) << 2;
|
|
data >>= 6;
|
|
g = (data & 0x3f) << 2;
|
|
data >>= 6;
|
|
r = (data & 0x3f) << 2;
|
|
COPY_PIXEL(dest, glue(rgb_to_pixel, BITS)(r, g, b));
|
|
width -= 1;
|
|
src += 4;
|
|
}
|
|
}
|
|
|
|
/* The wicked packed format */
|
|
static void glue(pxa2xx_draw_line18p_, BITS)(void *opaque,
|
|
uint8_t *dest, const uint8_t *src, int width, int deststep)
|
|
{
|
|
uint32_t data[3];
|
|
unsigned int r, g, b;
|
|
while (width > 0) {
|
|
data[0] = *(uint32_t *) src;
|
|
src += 4;
|
|
data[1] = *(uint32_t *) src;
|
|
src += 4;
|
|
data[2] = *(uint32_t *) src;
|
|
src += 4;
|
|
#ifdef SWAP_WORDS
|
|
data[0] = bswap32(data[0]);
|
|
data[1] = bswap32(data[1]);
|
|
data[2] = bswap32(data[2]);
|
|
#endif
|
|
b = (data[0] & 0x3f) << 2;
|
|
data[0] >>= 6;
|
|
g = (data[0] & 0x3f) << 2;
|
|
data[0] >>= 6;
|
|
r = (data[0] & 0x3f) << 2;
|
|
data[0] >>= 12;
|
|
COPY_PIXEL(dest, glue(rgb_to_pixel, BITS)(r, g, b));
|
|
b = (data[0] & 0x3f) << 2;
|
|
data[0] >>= 6;
|
|
g = ((data[1] & 0xf) << 4) | (data[0] << 2);
|
|
data[1] >>= 4;
|
|
r = (data[1] & 0x3f) << 2;
|
|
data[1] >>= 12;
|
|
COPY_PIXEL(dest, glue(rgb_to_pixel, BITS)(r, g, b));
|
|
b = (data[1] & 0x3f) << 2;
|
|
data[1] >>= 6;
|
|
g = (data[1] & 0x3f) << 2;
|
|
data[1] >>= 6;
|
|
r = ((data[2] & 0x3) << 6) | (data[1] << 2);
|
|
data[2] >>= 8;
|
|
COPY_PIXEL(dest, glue(rgb_to_pixel, BITS)(r, g, b));
|
|
b = (data[2] & 0x3f) << 2;
|
|
data[2] >>= 6;
|
|
g = (data[2] & 0x3f) << 2;
|
|
data[2] >>= 6;
|
|
r = data[2] << 2;
|
|
COPY_PIXEL(dest, glue(rgb_to_pixel, BITS)(r, g, b));
|
|
width -= 4;
|
|
}
|
|
}
|
|
|
|
static void glue(pxa2xx_draw_line19_, BITS)(void *opaque,
|
|
uint8_t *dest, const uint8_t *src, int width, int deststep)
|
|
{
|
|
uint32_t data;
|
|
unsigned int r, g, b;
|
|
while (width > 0) {
|
|
data = *(uint32_t *) src;
|
|
#ifdef SWAP_WORDS
|
|
data = bswap32(data);
|
|
#endif
|
|
b = (data & 0x3f) << 2;
|
|
data >>= 6;
|
|
g = (data & 0x3f) << 2;
|
|
data >>= 6;
|
|
r = (data & 0x3f) << 2;
|
|
data >>= 6;
|
|
if (data & 1)
|
|
SKIP_PIXEL(dest);
|
|
else
|
|
COPY_PIXEL(dest, glue(rgb_to_pixel, BITS)(r, g, b));
|
|
width -= 1;
|
|
src += 4;
|
|
}
|
|
}
|
|
|
|
/* The wicked packed format */
|
|
static void glue(pxa2xx_draw_line19p_, BITS)(void *opaque,
|
|
uint8_t *dest, const uint8_t *src, int width, int deststep)
|
|
{
|
|
uint32_t data[3];
|
|
unsigned int r, g, b;
|
|
while (width > 0) {
|
|
data[0] = *(uint32_t *) src;
|
|
src += 4;
|
|
data[1] = *(uint32_t *) src;
|
|
src += 4;
|
|
data[2] = *(uint32_t *) src;
|
|
src += 4;
|
|
# ifdef SWAP_WORDS
|
|
data[0] = bswap32(data[0]);
|
|
data[1] = bswap32(data[1]);
|
|
data[2] = bswap32(data[2]);
|
|
# endif
|
|
b = (data[0] & 0x3f) << 2;
|
|
data[0] >>= 6;
|
|
g = (data[0] & 0x3f) << 2;
|
|
data[0] >>= 6;
|
|
r = (data[0] & 0x3f) << 2;
|
|
data[0] >>= 6;
|
|
if (data[0] & 1)
|
|
SKIP_PIXEL(dest);
|
|
else
|
|
COPY_PIXEL(dest, glue(rgb_to_pixel, BITS)(r, g, b));
|
|
data[0] >>= 6;
|
|
b = (data[0] & 0x3f) << 2;
|
|
data[0] >>= 6;
|
|
g = ((data[1] & 0xf) << 4) | (data[0] << 2);
|
|
data[1] >>= 4;
|
|
r = (data[1] & 0x3f) << 2;
|
|
data[1] >>= 6;
|
|
if (data[1] & 1)
|
|
SKIP_PIXEL(dest);
|
|
else
|
|
COPY_PIXEL(dest, glue(rgb_to_pixel, BITS)(r, g, b));
|
|
data[1] >>= 6;
|
|
b = (data[1] & 0x3f) << 2;
|
|
data[1] >>= 6;
|
|
g = (data[1] & 0x3f) << 2;
|
|
data[1] >>= 6;
|
|
r = ((data[2] & 0x3) << 6) | (data[1] << 2);
|
|
data[2] >>= 2;
|
|
if (data[2] & 1)
|
|
SKIP_PIXEL(dest);
|
|
else
|
|
COPY_PIXEL(dest, glue(rgb_to_pixel, BITS)(r, g, b));
|
|
data[2] >>= 6;
|
|
b = (data[2] & 0x3f) << 2;
|
|
data[2] >>= 6;
|
|
g = (data[2] & 0x3f) << 2;
|
|
data[2] >>= 6;
|
|
r = data[2] << 2;
|
|
data[2] >>= 6;
|
|
if (data[2] & 1)
|
|
SKIP_PIXEL(dest);
|
|
else
|
|
COPY_PIXEL(dest, glue(rgb_to_pixel, BITS)(r, g, b));
|
|
width -= 4;
|
|
}
|
|
}
|
|
|
|
static void glue(pxa2xx_draw_line24_, BITS)(void *opaque,
|
|
uint8_t *dest, const uint8_t *src, int width, int deststep)
|
|
{
|
|
uint32_t data;
|
|
unsigned int r, g, b;
|
|
while (width > 0) {
|
|
data = *(uint32_t *) src;
|
|
#ifdef SWAP_WORDS
|
|
data = bswap32(data);
|
|
#endif
|
|
b = data & 0xff;
|
|
data >>= 8;
|
|
g = data & 0xff;
|
|
data >>= 8;
|
|
r = data & 0xff;
|
|
COPY_PIXEL(dest, glue(rgb_to_pixel, BITS)(r, g, b));
|
|
width -= 1;
|
|
src += 4;
|
|
}
|
|
}
|
|
|
|
static void glue(pxa2xx_draw_line24t_, BITS)(void *opaque,
|
|
uint8_t *dest, const uint8_t *src, int width, int deststep)
|
|
{
|
|
uint32_t data;
|
|
unsigned int r, g, b;
|
|
while (width > 0) {
|
|
data = *(uint32_t *) src;
|
|
#ifdef SWAP_WORDS
|
|
data = bswap32(data);
|
|
#endif
|
|
b = (data & 0x7f) << 1;
|
|
data >>= 7;
|
|
g = data & 0xff;
|
|
data >>= 8;
|
|
r = data & 0xff;
|
|
data >>= 8;
|
|
if (data & 1)
|
|
SKIP_PIXEL(dest);
|
|
else
|
|
COPY_PIXEL(dest, glue(rgb_to_pixel, BITS)(r, g, b));
|
|
width -= 1;
|
|
src += 4;
|
|
}
|
|
}
|
|
|
|
static void glue(pxa2xx_draw_line25_, BITS)(void *opaque,
|
|
uint8_t *dest, const uint8_t *src, int width, int deststep)
|
|
{
|
|
uint32_t data;
|
|
unsigned int r, g, b;
|
|
while (width > 0) {
|
|
data = *(uint32_t *) src;
|
|
#ifdef SWAP_WORDS
|
|
data = bswap32(data);
|
|
#endif
|
|
b = data & 0xff;
|
|
data >>= 8;
|
|
g = data & 0xff;
|
|
data >>= 8;
|
|
r = data & 0xff;
|
|
data >>= 8;
|
|
if (data & 1)
|
|
SKIP_PIXEL(dest);
|
|
else
|
|
COPY_PIXEL(dest, glue(rgb_to_pixel, BITS)(r, g, b));
|
|
width -= 1;
|
|
src += 4;
|
|
}
|
|
}
|
|
|
|
/* Overlay planes disabled, no transparency */
|
|
static drawfn glue(pxa2xx_draw_fn_, BITS)[16] =
|
|
{
|
|
[0 ... 0xf] = NULL,
|
|
[pxa_lcdc_2bpp] = glue(pxa2xx_draw_line2_, BITS),
|
|
[pxa_lcdc_4bpp] = glue(pxa2xx_draw_line4_, BITS),
|
|
[pxa_lcdc_8bpp] = glue(pxa2xx_draw_line8_, BITS),
|
|
[pxa_lcdc_16bpp] = glue(pxa2xx_draw_line16_, BITS),
|
|
[pxa_lcdc_18bpp] = glue(pxa2xx_draw_line18_, BITS),
|
|
[pxa_lcdc_18pbpp] = glue(pxa2xx_draw_line18p_, BITS),
|
|
[pxa_lcdc_24bpp] = glue(pxa2xx_draw_line24_, BITS),
|
|
};
|
|
|
|
/* Overlay planes enabled, transparency used */
|
|
static drawfn glue(glue(pxa2xx_draw_fn_, BITS), t)[16] =
|
|
{
|
|
[0 ... 0xf] = NULL,
|
|
[pxa_lcdc_4bpp] = glue(pxa2xx_draw_line4_, BITS),
|
|
[pxa_lcdc_8bpp] = glue(pxa2xx_draw_line8_, BITS),
|
|
[pxa_lcdc_16bpp] = glue(pxa2xx_draw_line16t_, BITS),
|
|
[pxa_lcdc_19bpp] = glue(pxa2xx_draw_line19_, BITS),
|
|
[pxa_lcdc_19pbpp] = glue(pxa2xx_draw_line19p_, BITS),
|
|
[pxa_lcdc_24bpp] = glue(pxa2xx_draw_line24t_, BITS),
|
|
[pxa_lcdc_25bpp] = glue(pxa2xx_draw_line25_, BITS),
|
|
};
|
|
|
|
#undef BITS
|
|
#undef COPY_PIXEL
|
|
#undef SKIP_PIXEL
|
|
|
|
#ifdef SWAP_WORDS
|
|
# undef SWAP_WORDS
|
|
#endif
|