qemu/hw/display/pl110_template.h
Paolo Bonzini 2cdaca90dd display: avoid multi-statement macro
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>
2014-01-31 14:47:33 +00:00

400 lines
9.5 KiB
C

/*
* Arm PrimeCell PL110 Color LCD Controller
*
* Copyright (c) 2005 CodeSourcery, LLC.
* Written by Paul Brook
*
* This code is licensed under the GNU LGPL
*
* Framebuffer format conversion routines.
*/
#ifndef ORDER
#if BITS == 8
#define COPY_PIXEL(to, from) *(to++) = from
#elif BITS == 15 || BITS == 16
#define COPY_PIXEL(to, from) do { *(uint16_t *)to = from; to += 2; } while (0)
#elif BITS == 24
#define COPY_PIXEL(to, from) \
do { \
*(to++) = from; \
*(to++) = (from) >> 8; \
*(to++) = (from) >> 16; \
} while (0)
#elif BITS == 32
#define COPY_PIXEL(to, from) do { *(uint32_t *)to = from; to += 4; } while (0)
#else
#error unknown bit depth
#endif
#undef RGB
#define BORDER bgr
#define ORDER 0
#include "pl110_template.h"
#define ORDER 1
#include "pl110_template.h"
#define ORDER 2
#include "pl110_template.h"
#undef BORDER
#define RGB
#define BORDER rgb
#define ORDER 0
#include "pl110_template.h"
#define ORDER 1
#include "pl110_template.h"
#define ORDER 2
#include "pl110_template.h"
#undef BORDER
static drawfn glue(pl110_draw_fn_,BITS)[48] =
{
glue(pl110_draw_line1_lblp_bgr,BITS),
glue(pl110_draw_line2_lblp_bgr,BITS),
glue(pl110_draw_line4_lblp_bgr,BITS),
glue(pl110_draw_line8_lblp_bgr,BITS),
glue(pl110_draw_line16_555_lblp_bgr,BITS),
glue(pl110_draw_line32_lblp_bgr,BITS),
glue(pl110_draw_line16_lblp_bgr,BITS),
glue(pl110_draw_line12_lblp_bgr,BITS),
glue(pl110_draw_line1_bbbp_bgr,BITS),
glue(pl110_draw_line2_bbbp_bgr,BITS),
glue(pl110_draw_line4_bbbp_bgr,BITS),
glue(pl110_draw_line8_bbbp_bgr,BITS),
glue(pl110_draw_line16_555_bbbp_bgr,BITS),
glue(pl110_draw_line32_bbbp_bgr,BITS),
glue(pl110_draw_line16_bbbp_bgr,BITS),
glue(pl110_draw_line12_bbbp_bgr,BITS),
glue(pl110_draw_line1_lbbp_bgr,BITS),
glue(pl110_draw_line2_lbbp_bgr,BITS),
glue(pl110_draw_line4_lbbp_bgr,BITS),
glue(pl110_draw_line8_lbbp_bgr,BITS),
glue(pl110_draw_line16_555_lbbp_bgr,BITS),
glue(pl110_draw_line32_lbbp_bgr,BITS),
glue(pl110_draw_line16_lbbp_bgr,BITS),
glue(pl110_draw_line12_lbbp_bgr,BITS),
glue(pl110_draw_line1_lblp_rgb,BITS),
glue(pl110_draw_line2_lblp_rgb,BITS),
glue(pl110_draw_line4_lblp_rgb,BITS),
glue(pl110_draw_line8_lblp_rgb,BITS),
glue(pl110_draw_line16_555_lblp_rgb,BITS),
glue(pl110_draw_line32_lblp_rgb,BITS),
glue(pl110_draw_line16_lblp_rgb,BITS),
glue(pl110_draw_line12_lblp_rgb,BITS),
glue(pl110_draw_line1_bbbp_rgb,BITS),
glue(pl110_draw_line2_bbbp_rgb,BITS),
glue(pl110_draw_line4_bbbp_rgb,BITS),
glue(pl110_draw_line8_bbbp_rgb,BITS),
glue(pl110_draw_line16_555_bbbp_rgb,BITS),
glue(pl110_draw_line32_bbbp_rgb,BITS),
glue(pl110_draw_line16_bbbp_rgb,BITS),
glue(pl110_draw_line12_bbbp_rgb,BITS),
glue(pl110_draw_line1_lbbp_rgb,BITS),
glue(pl110_draw_line2_lbbp_rgb,BITS),
glue(pl110_draw_line4_lbbp_rgb,BITS),
glue(pl110_draw_line8_lbbp_rgb,BITS),
glue(pl110_draw_line16_555_lbbp_rgb,BITS),
glue(pl110_draw_line32_lbbp_rgb,BITS),
glue(pl110_draw_line16_lbbp_rgb,BITS),
glue(pl110_draw_line12_lbbp_rgb,BITS),
};
#undef BITS
#undef COPY_PIXEL
#else
#if ORDER == 0
#define NAME glue(glue(lblp_, BORDER), BITS)
#ifdef HOST_WORDS_BIGENDIAN
#define SWAP_WORDS 1
#endif
#elif ORDER == 1
#define NAME glue(glue(bbbp_, BORDER), BITS)
#ifndef HOST_WORDS_BIGENDIAN
#define SWAP_WORDS 1
#endif
#else
#define SWAP_PIXELS 1
#define NAME glue(glue(lbbp_, BORDER), BITS)
#ifdef HOST_WORDS_BIGENDIAN
#define SWAP_WORDS 1
#endif
#endif
#define FN_2(x, y) FN(x, y) FN(x+1, y)
#define FN_4(x, y) FN_2(x, y) FN_2(x+2, y)
#define FN_8(y) FN_4(0, y) FN_4(4, y)
static void glue(pl110_draw_line1_,NAME)(void *opaque, uint8_t *d, const uint8_t *src, int width, int deststep)
{
uint32_t *palette = opaque;
uint32_t data;
while (width > 0) {
data = *(uint32_t *)src;
#ifdef SWAP_PIXELS
#define FN(x, y) COPY_PIXEL(d, palette[(data >> (y + 7 - (x))) & 1]);
#else
#define FN(x, y) COPY_PIXEL(d, palette[(data >> ((x) + y)) & 1]);
#endif
#ifdef SWAP_WORDS
FN_8(24)
FN_8(16)
FN_8(8)
FN_8(0)
#else
FN_8(0)
FN_8(8)
FN_8(16)
FN_8(24)
#endif
#undef FN
width -= 32;
src += 4;
}
}
static void glue(pl110_draw_line2_,NAME)(void *opaque, uint8_t *d, const uint8_t *src, int width, int deststep)
{
uint32_t *palette = opaque;
uint32_t data;
while (width > 0) {
data = *(uint32_t *)src;
#ifdef SWAP_PIXELS
#define FN(x, y) COPY_PIXEL(d, palette[(data >> (y + 6 - (x)*2)) & 3]);
#else
#define FN(x, y) COPY_PIXEL(d, palette[(data >> ((x)*2 + y)) & 3]);
#endif
#ifdef SWAP_WORDS
FN_4(0, 24)
FN_4(0, 16)
FN_4(0, 8)
FN_4(0, 0)
#else
FN_4(0, 0)
FN_4(0, 8)
FN_4(0, 16)
FN_4(0, 24)
#endif
#undef FN
width -= 16;
src += 4;
}
}
static void glue(pl110_draw_line4_,NAME)(void *opaque, uint8_t *d, const uint8_t *src, int width, int deststep)
{
uint32_t *palette = opaque;
uint32_t data;
while (width > 0) {
data = *(uint32_t *)src;
#ifdef SWAP_PIXELS
#define FN(x, y) COPY_PIXEL(d, palette[(data >> (y + 4 - (x)*4)) & 0xf]);
#else
#define FN(x, y) COPY_PIXEL(d, palette[(data >> ((x)*4 + y)) & 0xf]);
#endif
#ifdef SWAP_WORDS
FN_2(0, 24)
FN_2(0, 16)
FN_2(0, 8)
FN_2(0, 0)
#else
FN_2(0, 0)
FN_2(0, 8)
FN_2(0, 16)
FN_2(0, 24)
#endif
#undef FN
width -= 8;
src += 4;
}
}
static void glue(pl110_draw_line8_,NAME)(void *opaque, uint8_t *d, 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(d, 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(pl110_draw_line16_,NAME)(void *opaque, uint8_t *d, 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
#ifdef RGB
#define LSB r
#define MSB b
#else
#define LSB b
#define MSB r
#endif
#if 0
LSB = data & 0x1f;
data >>= 5;
g = data & 0x3f;
data >>= 6;
MSB = data & 0x1f;
data >>= 5;
#else
LSB = (data & 0x1f) << 3;
data >>= 5;
g = (data & 0x3f) << 2;
data >>= 6;
MSB = (data & 0x1f) << 3;
data >>= 5;
#endif
COPY_PIXEL(d, glue(rgb_to_pixel,BITS)(r, g, b));
LSB = (data & 0x1f) << 3;
data >>= 5;
g = (data & 0x3f) << 2;
data >>= 6;
MSB = (data & 0x1f) << 3;
data >>= 5;
COPY_PIXEL(d, glue(rgb_to_pixel,BITS)(r, g, b));
#undef MSB
#undef LSB
width -= 2;
src += 4;
}
}
static void glue(pl110_draw_line32_,NAME)(void *opaque, uint8_t *d, const uint8_t *src, int width, int deststep)
{
uint32_t data;
unsigned int r, g, b;
while (width > 0) {
data = *(uint32_t *)src;
#ifdef RGB
#define LSB r
#define MSB b
#else
#define LSB b
#define MSB r
#endif
#ifndef SWAP_WORDS
LSB = data & 0xff;
g = (data >> 8) & 0xff;
MSB = (data >> 16) & 0xff;
#else
LSB = (data >> 24) & 0xff;
g = (data >> 16) & 0xff;
MSB = (data >> 8) & 0xff;
#endif
COPY_PIXEL(d, glue(rgb_to_pixel,BITS)(r, g, b));
#undef MSB
#undef LSB
width--;
src += 4;
}
}
static void glue(pl110_draw_line16_555_,NAME)(void *opaque, uint8_t *d, const uint8_t *src, int width, int deststep)
{
/* RGB 555 plus an intensity bit (which we ignore) */
uint32_t data;
unsigned int r, g, b;
while (width > 0) {
data = *(uint32_t *)src;
#ifdef SWAP_WORDS
data = bswap32(data);
#endif
#ifdef RGB
#define LSB r
#define MSB b
#else
#define LSB b
#define MSB r
#endif
LSB = (data & 0x1f) << 3;
data >>= 5;
g = (data & 0x1f) << 3;
data >>= 5;
MSB = (data & 0x1f) << 3;
data >>= 5;
COPY_PIXEL(d, glue(rgb_to_pixel,BITS)(r, g, b));
LSB = (data & 0x1f) << 3;
data >>= 5;
g = (data & 0x1f) << 3;
data >>= 5;
MSB = (data & 0x1f) << 3;
data >>= 6;
COPY_PIXEL(d, glue(rgb_to_pixel,BITS)(r, g, b));
#undef MSB
#undef LSB
width -= 2;
src += 4;
}
}
static void glue(pl110_draw_line12_,NAME)(void *opaque, uint8_t *d, const uint8_t *src, int width, int deststep)
{
/* RGB 444 with 4 bits of zeroes at the top of each halfword */
uint32_t data;
unsigned int r, g, b;
while (width > 0) {
data = *(uint32_t *)src;
#ifdef SWAP_WORDS
data = bswap32(data);
#endif
#ifdef RGB
#define LSB r
#define MSB b
#else
#define LSB b
#define MSB r
#endif
LSB = (data & 0xf) << 4;
data >>= 4;
g = (data & 0xf) << 4;
data >>= 4;
MSB = (data & 0xf) << 4;
data >>= 8;
COPY_PIXEL(d, glue(rgb_to_pixel,BITS)(r, g, b));
LSB = (data & 0xf) << 4;
data >>= 4;
g = (data & 0xf) << 4;
data >>= 4;
MSB = (data & 0xf) << 4;
data >>= 8;
COPY_PIXEL(d, glue(rgb_to_pixel,BITS)(r, g, b));
#undef MSB
#undef LSB
width -= 2;
src += 4;
}
}
#undef SWAP_PIXELS
#undef NAME
#undef SWAP_WORDS
#undef ORDER
#endif