8454df8b1e
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@1957 c046a42c-6fe2-441c-8c8c-71466251a162
1946 lines
55 KiB
C
1946 lines
55 KiB
C
/*
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* QEMU VGA Emulator.
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*
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* Copyright (c) 2003 Fabrice Bellard
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include "vl.h"
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#include "vga_int.h"
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//#define DEBUG_VGA
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//#define DEBUG_VGA_MEM
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//#define DEBUG_VGA_REG
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//#define DEBUG_BOCHS_VBE
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/* force some bits to zero */
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const uint8_t sr_mask[8] = {
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(uint8_t)~0xfc,
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(uint8_t)~0xc2,
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(uint8_t)~0xf0,
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(uint8_t)~0xc0,
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(uint8_t)~0xf1,
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(uint8_t)~0xff,
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(uint8_t)~0xff,
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(uint8_t)~0x00,
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};
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const uint8_t gr_mask[16] = {
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(uint8_t)~0xf0, /* 0x00 */
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(uint8_t)~0xf0, /* 0x01 */
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(uint8_t)~0xf0, /* 0x02 */
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(uint8_t)~0xe0, /* 0x03 */
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(uint8_t)~0xfc, /* 0x04 */
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(uint8_t)~0x84, /* 0x05 */
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(uint8_t)~0xf0, /* 0x06 */
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(uint8_t)~0xf0, /* 0x07 */
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(uint8_t)~0x00, /* 0x08 */
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(uint8_t)~0xff, /* 0x09 */
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(uint8_t)~0xff, /* 0x0a */
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(uint8_t)~0xff, /* 0x0b */
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(uint8_t)~0xff, /* 0x0c */
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(uint8_t)~0xff, /* 0x0d */
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(uint8_t)~0xff, /* 0x0e */
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(uint8_t)~0xff, /* 0x0f */
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};
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#define cbswap_32(__x) \
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((uint32_t)( \
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(((uint32_t)(__x) & (uint32_t)0x000000ffUL) << 24) | \
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(((uint32_t)(__x) & (uint32_t)0x0000ff00UL) << 8) | \
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(((uint32_t)(__x) & (uint32_t)0x00ff0000UL) >> 8) | \
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(((uint32_t)(__x) & (uint32_t)0xff000000UL) >> 24) ))
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#ifdef WORDS_BIGENDIAN
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#define PAT(x) cbswap_32(x)
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#else
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#define PAT(x) (x)
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#endif
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#ifdef WORDS_BIGENDIAN
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#define BIG 1
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#else
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#define BIG 0
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#endif
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#ifdef WORDS_BIGENDIAN
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#define GET_PLANE(data, p) (((data) >> (24 - (p) * 8)) & 0xff)
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#else
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#define GET_PLANE(data, p) (((data) >> ((p) * 8)) & 0xff)
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#endif
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static const uint32_t mask16[16] = {
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PAT(0x00000000),
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PAT(0x000000ff),
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PAT(0x0000ff00),
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PAT(0x0000ffff),
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PAT(0x00ff0000),
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PAT(0x00ff00ff),
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PAT(0x00ffff00),
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PAT(0x00ffffff),
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PAT(0xff000000),
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PAT(0xff0000ff),
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PAT(0xff00ff00),
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PAT(0xff00ffff),
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PAT(0xffff0000),
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PAT(0xffff00ff),
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PAT(0xffffff00),
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PAT(0xffffffff),
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};
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#undef PAT
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#ifdef WORDS_BIGENDIAN
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#define PAT(x) (x)
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#else
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#define PAT(x) cbswap_32(x)
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#endif
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static const uint32_t dmask16[16] = {
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PAT(0x00000000),
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PAT(0x000000ff),
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PAT(0x0000ff00),
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PAT(0x0000ffff),
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PAT(0x00ff0000),
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PAT(0x00ff00ff),
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PAT(0x00ffff00),
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PAT(0x00ffffff),
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PAT(0xff000000),
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PAT(0xff0000ff),
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PAT(0xff00ff00),
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PAT(0xff00ffff),
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PAT(0xffff0000),
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PAT(0xffff00ff),
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PAT(0xffffff00),
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PAT(0xffffffff),
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};
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static const uint32_t dmask4[4] = {
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PAT(0x00000000),
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PAT(0x0000ffff),
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PAT(0xffff0000),
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PAT(0xffffffff),
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};
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static uint32_t expand4[256];
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static uint16_t expand2[256];
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static uint8_t expand4to8[16];
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VGAState *vga_state;
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int vga_io_memory;
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static void vga_screen_dump(void *opaque, const char *filename);
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static uint32_t vga_ioport_read(void *opaque, uint32_t addr)
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{
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VGAState *s = opaque;
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int val, index;
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/* check port range access depending on color/monochrome mode */
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if ((addr >= 0x3b0 && addr <= 0x3bf && (s->msr & MSR_COLOR_EMULATION)) ||
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(addr >= 0x3d0 && addr <= 0x3df && !(s->msr & MSR_COLOR_EMULATION))) {
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val = 0xff;
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} else {
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switch(addr) {
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case 0x3c0:
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if (s->ar_flip_flop == 0) {
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val = s->ar_index;
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} else {
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val = 0;
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}
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break;
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case 0x3c1:
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index = s->ar_index & 0x1f;
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if (index < 21)
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val = s->ar[index];
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else
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val = 0;
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break;
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case 0x3c2:
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val = s->st00;
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break;
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case 0x3c4:
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val = s->sr_index;
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break;
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case 0x3c5:
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val = s->sr[s->sr_index];
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#ifdef DEBUG_VGA_REG
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printf("vga: read SR%x = 0x%02x\n", s->sr_index, val);
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#endif
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break;
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case 0x3c7:
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val = s->dac_state;
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break;
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case 0x3c8:
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val = s->dac_write_index;
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break;
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case 0x3c9:
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val = s->palette[s->dac_read_index * 3 + s->dac_sub_index];
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if (++s->dac_sub_index == 3) {
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s->dac_sub_index = 0;
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s->dac_read_index++;
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}
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break;
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case 0x3ca:
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val = s->fcr;
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break;
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case 0x3cc:
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val = s->msr;
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break;
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case 0x3ce:
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val = s->gr_index;
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break;
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case 0x3cf:
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val = s->gr[s->gr_index];
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#ifdef DEBUG_VGA_REG
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printf("vga: read GR%x = 0x%02x\n", s->gr_index, val);
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#endif
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break;
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case 0x3b4:
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case 0x3d4:
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val = s->cr_index;
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break;
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case 0x3b5:
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case 0x3d5:
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val = s->cr[s->cr_index];
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#ifdef DEBUG_VGA_REG
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printf("vga: read CR%x = 0x%02x\n", s->cr_index, val);
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#endif
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break;
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case 0x3ba:
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case 0x3da:
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/* just toggle to fool polling */
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s->st01 ^= ST01_V_RETRACE | ST01_DISP_ENABLE;
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val = s->st01;
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s->ar_flip_flop = 0;
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break;
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default:
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val = 0x00;
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break;
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}
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}
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#if defined(DEBUG_VGA)
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printf("VGA: read addr=0x%04x data=0x%02x\n", addr, val);
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#endif
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return val;
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}
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static void vga_ioport_write(void *opaque, uint32_t addr, uint32_t val)
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{
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VGAState *s = opaque;
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int index;
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/* check port range access depending on color/monochrome mode */
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if ((addr >= 0x3b0 && addr <= 0x3bf && (s->msr & MSR_COLOR_EMULATION)) ||
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(addr >= 0x3d0 && addr <= 0x3df && !(s->msr & MSR_COLOR_EMULATION)))
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return;
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#ifdef DEBUG_VGA
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printf("VGA: write addr=0x%04x data=0x%02x\n", addr, val);
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#endif
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switch(addr) {
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case 0x3c0:
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if (s->ar_flip_flop == 0) {
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val &= 0x3f;
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s->ar_index = val;
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} else {
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index = s->ar_index & 0x1f;
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switch(index) {
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case 0x00 ... 0x0f:
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s->ar[index] = val & 0x3f;
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break;
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case 0x10:
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s->ar[index] = val & ~0x10;
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break;
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case 0x11:
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s->ar[index] = val;
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break;
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case 0x12:
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s->ar[index] = val & ~0xc0;
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break;
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case 0x13:
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s->ar[index] = val & ~0xf0;
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break;
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case 0x14:
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s->ar[index] = val & ~0xf0;
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break;
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default:
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break;
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}
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}
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s->ar_flip_flop ^= 1;
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break;
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case 0x3c2:
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s->msr = val & ~0x10;
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break;
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case 0x3c4:
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s->sr_index = val & 7;
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break;
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case 0x3c5:
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#ifdef DEBUG_VGA_REG
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printf("vga: write SR%x = 0x%02x\n", s->sr_index, val);
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#endif
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s->sr[s->sr_index] = val & sr_mask[s->sr_index];
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break;
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case 0x3c7:
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s->dac_read_index = val;
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s->dac_sub_index = 0;
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s->dac_state = 3;
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break;
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case 0x3c8:
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s->dac_write_index = val;
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s->dac_sub_index = 0;
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s->dac_state = 0;
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break;
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case 0x3c9:
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s->dac_cache[s->dac_sub_index] = val;
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if (++s->dac_sub_index == 3) {
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memcpy(&s->palette[s->dac_write_index * 3], s->dac_cache, 3);
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s->dac_sub_index = 0;
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s->dac_write_index++;
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}
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break;
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case 0x3ce:
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s->gr_index = val & 0x0f;
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break;
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case 0x3cf:
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#ifdef DEBUG_VGA_REG
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printf("vga: write GR%x = 0x%02x\n", s->gr_index, val);
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#endif
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s->gr[s->gr_index] = val & gr_mask[s->gr_index];
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break;
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case 0x3b4:
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case 0x3d4:
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s->cr_index = val;
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break;
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case 0x3b5:
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case 0x3d5:
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#ifdef DEBUG_VGA_REG
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printf("vga: write CR%x = 0x%02x\n", s->cr_index, val);
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#endif
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/* handle CR0-7 protection */
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if ((s->cr[0x11] & 0x80) && s->cr_index <= 7) {
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/* can always write bit 4 of CR7 */
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if (s->cr_index == 7)
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s->cr[7] = (s->cr[7] & ~0x10) | (val & 0x10);
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return;
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}
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switch(s->cr_index) {
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case 0x01: /* horizontal display end */
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case 0x07:
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case 0x09:
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case 0x0c:
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case 0x0d:
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case 0x12: /* veritcal display end */
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s->cr[s->cr_index] = val;
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break;
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default:
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s->cr[s->cr_index] = val;
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break;
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}
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break;
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case 0x3ba:
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case 0x3da:
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s->fcr = val & 0x10;
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break;
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}
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}
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#ifdef CONFIG_BOCHS_VBE
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static uint32_t vbe_ioport_read_index(void *opaque, uint32_t addr)
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{
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VGAState *s = opaque;
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uint32_t val;
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val = s->vbe_index;
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return val;
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}
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static uint32_t vbe_ioport_read_data(void *opaque, uint32_t addr)
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{
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VGAState *s = opaque;
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uint32_t val;
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if (s->vbe_index <= VBE_DISPI_INDEX_NB) {
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if (s->vbe_regs[VBE_DISPI_INDEX_ENABLE] & VBE_DISPI_GETCAPS) {
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switch(s->vbe_index) {
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/* XXX: do not hardcode ? */
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case VBE_DISPI_INDEX_XRES:
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val = VBE_DISPI_MAX_XRES;
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break;
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case VBE_DISPI_INDEX_YRES:
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val = VBE_DISPI_MAX_YRES;
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break;
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case VBE_DISPI_INDEX_BPP:
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val = VBE_DISPI_MAX_BPP;
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break;
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default:
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val = s->vbe_regs[s->vbe_index];
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break;
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}
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} else {
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val = s->vbe_regs[s->vbe_index];
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}
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} else {
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val = 0;
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}
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#ifdef DEBUG_BOCHS_VBE
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printf("VBE: read index=0x%x val=0x%x\n", s->vbe_index, val);
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#endif
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return val;
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}
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static void vbe_ioport_write_index(void *opaque, uint32_t addr, uint32_t val)
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{
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VGAState *s = opaque;
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s->vbe_index = val;
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}
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static void vbe_ioport_write_data(void *opaque, uint32_t addr, uint32_t val)
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{
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VGAState *s = opaque;
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if (s->vbe_index <= VBE_DISPI_INDEX_NB) {
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#ifdef DEBUG_BOCHS_VBE
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printf("VBE: write index=0x%x val=0x%x\n", s->vbe_index, val);
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#endif
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switch(s->vbe_index) {
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case VBE_DISPI_INDEX_ID:
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if (val == VBE_DISPI_ID0 ||
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val == VBE_DISPI_ID1 ||
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val == VBE_DISPI_ID2) {
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s->vbe_regs[s->vbe_index] = val;
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}
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break;
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case VBE_DISPI_INDEX_XRES:
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if ((val <= VBE_DISPI_MAX_XRES) && ((val & 7) == 0)) {
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s->vbe_regs[s->vbe_index] = val;
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}
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break;
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case VBE_DISPI_INDEX_YRES:
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if (val <= VBE_DISPI_MAX_YRES) {
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s->vbe_regs[s->vbe_index] = val;
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}
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break;
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case VBE_DISPI_INDEX_BPP:
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if (val == 0)
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val = 8;
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if (val == 4 || val == 8 || val == 15 ||
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val == 16 || val == 24 || val == 32) {
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s->vbe_regs[s->vbe_index] = val;
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}
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break;
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case VBE_DISPI_INDEX_BANK:
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val &= s->vbe_bank_mask;
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s->vbe_regs[s->vbe_index] = val;
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s->bank_offset = (val << 16);
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break;
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case VBE_DISPI_INDEX_ENABLE:
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if ((val & VBE_DISPI_ENABLED) &&
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!(s->vbe_regs[VBE_DISPI_INDEX_ENABLE] & VBE_DISPI_ENABLED)) {
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int h, shift_control;
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s->vbe_regs[VBE_DISPI_INDEX_VIRT_WIDTH] =
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s->vbe_regs[VBE_DISPI_INDEX_XRES];
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s->vbe_regs[VBE_DISPI_INDEX_VIRT_HEIGHT] =
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s->vbe_regs[VBE_DISPI_INDEX_YRES];
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s->vbe_regs[VBE_DISPI_INDEX_X_OFFSET] = 0;
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s->vbe_regs[VBE_DISPI_INDEX_Y_OFFSET] = 0;
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if (s->vbe_regs[VBE_DISPI_INDEX_BPP] == 4)
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s->vbe_line_offset = s->vbe_regs[VBE_DISPI_INDEX_XRES] >> 1;
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else
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s->vbe_line_offset = s->vbe_regs[VBE_DISPI_INDEX_XRES] *
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((s->vbe_regs[VBE_DISPI_INDEX_BPP] + 7) >> 3);
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s->vbe_start_addr = 0;
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/* clear the screen (should be done in BIOS) */
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if (!(val & VBE_DISPI_NOCLEARMEM)) {
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memset(s->vram_ptr, 0,
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s->vbe_regs[VBE_DISPI_INDEX_YRES] * s->vbe_line_offset);
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}
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/* we initialize the VGA graphic mode (should be done
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in BIOS) */
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s->gr[0x06] = (s->gr[0x06] & ~0x0c) | 0x05; /* graphic mode + memory map 1 */
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s->cr[0x17] |= 3; /* no CGA modes */
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s->cr[0x13] = s->vbe_line_offset >> 3;
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|
/* width */
|
|
s->cr[0x01] = (s->vbe_regs[VBE_DISPI_INDEX_XRES] >> 3) - 1;
|
|
/* height (only meaningful if < 1024) */
|
|
h = s->vbe_regs[VBE_DISPI_INDEX_YRES] - 1;
|
|
s->cr[0x12] = h;
|
|
s->cr[0x07] = (s->cr[0x07] & ~0x42) |
|
|
((h >> 7) & 0x02) | ((h >> 3) & 0x40);
|
|
/* line compare to 1023 */
|
|
s->cr[0x18] = 0xff;
|
|
s->cr[0x07] |= 0x10;
|
|
s->cr[0x09] |= 0x40;
|
|
|
|
if (s->vbe_regs[VBE_DISPI_INDEX_BPP] == 4) {
|
|
shift_control = 0;
|
|
s->sr[0x01] &= ~8; /* no double line */
|
|
} else {
|
|
shift_control = 2;
|
|
s->sr[4] |= 0x08; /* set chain 4 mode */
|
|
s->sr[2] |= 0x0f; /* activate all planes */
|
|
}
|
|
s->gr[0x05] = (s->gr[0x05] & ~0x60) | (shift_control << 5);
|
|
s->cr[0x09] &= ~0x9f; /* no double scan */
|
|
} else {
|
|
/* XXX: the bios should do that */
|
|
s->bank_offset = 0;
|
|
}
|
|
s->vbe_regs[s->vbe_index] = val;
|
|
break;
|
|
case VBE_DISPI_INDEX_VIRT_WIDTH:
|
|
{
|
|
int w, h, line_offset;
|
|
|
|
if (val < s->vbe_regs[VBE_DISPI_INDEX_XRES])
|
|
return;
|
|
w = val;
|
|
if (s->vbe_regs[VBE_DISPI_INDEX_BPP] == 4)
|
|
line_offset = w >> 1;
|
|
else
|
|
line_offset = w * ((s->vbe_regs[VBE_DISPI_INDEX_BPP] + 7) >> 3);
|
|
h = s->vram_size / line_offset;
|
|
/* XXX: support weird bochs semantics ? */
|
|
if (h < s->vbe_regs[VBE_DISPI_INDEX_YRES])
|
|
return;
|
|
s->vbe_regs[VBE_DISPI_INDEX_VIRT_WIDTH] = w;
|
|
s->vbe_regs[VBE_DISPI_INDEX_VIRT_HEIGHT] = h;
|
|
s->vbe_line_offset = line_offset;
|
|
}
|
|
break;
|
|
case VBE_DISPI_INDEX_X_OFFSET:
|
|
case VBE_DISPI_INDEX_Y_OFFSET:
|
|
{
|
|
int x;
|
|
s->vbe_regs[s->vbe_index] = val;
|
|
s->vbe_start_addr = s->vbe_line_offset * s->vbe_regs[VBE_DISPI_INDEX_Y_OFFSET];
|
|
x = s->vbe_regs[VBE_DISPI_INDEX_X_OFFSET];
|
|
if (s->vbe_regs[VBE_DISPI_INDEX_BPP] == 4)
|
|
s->vbe_start_addr += x >> 1;
|
|
else
|
|
s->vbe_start_addr += x * ((s->vbe_regs[VBE_DISPI_INDEX_BPP] + 7) >> 3);
|
|
s->vbe_start_addr >>= 2;
|
|
}
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
#endif
|
|
|
|
/* called for accesses between 0xa0000 and 0xc0000 */
|
|
uint32_t vga_mem_readb(void *opaque, target_phys_addr_t addr)
|
|
{
|
|
VGAState *s = opaque;
|
|
int memory_map_mode, plane;
|
|
uint32_t ret;
|
|
|
|
/* convert to VGA memory offset */
|
|
memory_map_mode = (s->gr[6] >> 2) & 3;
|
|
addr &= 0x1ffff;
|
|
switch(memory_map_mode) {
|
|
case 0:
|
|
break;
|
|
case 1:
|
|
if (addr >= 0x10000)
|
|
return 0xff;
|
|
addr += s->bank_offset;
|
|
break;
|
|
case 2:
|
|
addr -= 0x10000;
|
|
if (addr >= 0x8000)
|
|
return 0xff;
|
|
break;
|
|
default:
|
|
case 3:
|
|
addr -= 0x18000;
|
|
if (addr >= 0x8000)
|
|
return 0xff;
|
|
break;
|
|
}
|
|
|
|
if (s->sr[4] & 0x08) {
|
|
/* chain 4 mode : simplest access */
|
|
ret = s->vram_ptr[addr];
|
|
} else if (s->gr[5] & 0x10) {
|
|
/* odd/even mode (aka text mode mapping) */
|
|
plane = (s->gr[4] & 2) | (addr & 1);
|
|
ret = s->vram_ptr[((addr & ~1) << 1) | plane];
|
|
} else {
|
|
/* standard VGA latched access */
|
|
s->latch = ((uint32_t *)s->vram_ptr)[addr];
|
|
|
|
if (!(s->gr[5] & 0x08)) {
|
|
/* read mode 0 */
|
|
plane = s->gr[4];
|
|
ret = GET_PLANE(s->latch, plane);
|
|
} else {
|
|
/* read mode 1 */
|
|
ret = (s->latch ^ mask16[s->gr[2]]) & mask16[s->gr[7]];
|
|
ret |= ret >> 16;
|
|
ret |= ret >> 8;
|
|
ret = (~ret) & 0xff;
|
|
}
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
static uint32_t vga_mem_readw(void *opaque, target_phys_addr_t addr)
|
|
{
|
|
uint32_t v;
|
|
#ifdef TARGET_WORDS_BIGENDIAN
|
|
v = vga_mem_readb(opaque, addr) << 8;
|
|
v |= vga_mem_readb(opaque, addr + 1);
|
|
#else
|
|
v = vga_mem_readb(opaque, addr);
|
|
v |= vga_mem_readb(opaque, addr + 1) << 8;
|
|
#endif
|
|
return v;
|
|
}
|
|
|
|
static uint32_t vga_mem_readl(void *opaque, target_phys_addr_t addr)
|
|
{
|
|
uint32_t v;
|
|
#ifdef TARGET_WORDS_BIGENDIAN
|
|
v = vga_mem_readb(opaque, addr) << 24;
|
|
v |= vga_mem_readb(opaque, addr + 1) << 16;
|
|
v |= vga_mem_readb(opaque, addr + 2) << 8;
|
|
v |= vga_mem_readb(opaque, addr + 3);
|
|
#else
|
|
v = vga_mem_readb(opaque, addr);
|
|
v |= vga_mem_readb(opaque, addr + 1) << 8;
|
|
v |= vga_mem_readb(opaque, addr + 2) << 16;
|
|
v |= vga_mem_readb(opaque, addr + 3) << 24;
|
|
#endif
|
|
return v;
|
|
}
|
|
|
|
/* called for accesses between 0xa0000 and 0xc0000 */
|
|
void vga_mem_writeb(void *opaque, target_phys_addr_t addr, uint32_t val)
|
|
{
|
|
VGAState *s = opaque;
|
|
int memory_map_mode, plane, write_mode, b, func_select, mask;
|
|
uint32_t write_mask, bit_mask, set_mask;
|
|
|
|
#ifdef DEBUG_VGA_MEM
|
|
printf("vga: [0x%x] = 0x%02x\n", addr, val);
|
|
#endif
|
|
/* convert to VGA memory offset */
|
|
memory_map_mode = (s->gr[6] >> 2) & 3;
|
|
addr &= 0x1ffff;
|
|
switch(memory_map_mode) {
|
|
case 0:
|
|
break;
|
|
case 1:
|
|
if (addr >= 0x10000)
|
|
return;
|
|
addr += s->bank_offset;
|
|
break;
|
|
case 2:
|
|
addr -= 0x10000;
|
|
if (addr >= 0x8000)
|
|
return;
|
|
break;
|
|
default:
|
|
case 3:
|
|
addr -= 0x18000;
|
|
if (addr >= 0x8000)
|
|
return;
|
|
break;
|
|
}
|
|
|
|
if (s->sr[4] & 0x08) {
|
|
/* chain 4 mode : simplest access */
|
|
plane = addr & 3;
|
|
mask = (1 << plane);
|
|
if (s->sr[2] & mask) {
|
|
s->vram_ptr[addr] = val;
|
|
#ifdef DEBUG_VGA_MEM
|
|
printf("vga: chain4: [0x%x]\n", addr);
|
|
#endif
|
|
s->plane_updated |= mask; /* only used to detect font change */
|
|
cpu_physical_memory_set_dirty(s->vram_offset + addr);
|
|
}
|
|
} else if (s->gr[5] & 0x10) {
|
|
/* odd/even mode (aka text mode mapping) */
|
|
plane = (s->gr[4] & 2) | (addr & 1);
|
|
mask = (1 << plane);
|
|
if (s->sr[2] & mask) {
|
|
addr = ((addr & ~1) << 1) | plane;
|
|
s->vram_ptr[addr] = val;
|
|
#ifdef DEBUG_VGA_MEM
|
|
printf("vga: odd/even: [0x%x]\n", addr);
|
|
#endif
|
|
s->plane_updated |= mask; /* only used to detect font change */
|
|
cpu_physical_memory_set_dirty(s->vram_offset + addr);
|
|
}
|
|
} else {
|
|
/* standard VGA latched access */
|
|
write_mode = s->gr[5] & 3;
|
|
switch(write_mode) {
|
|
default:
|
|
case 0:
|
|
/* rotate */
|
|
b = s->gr[3] & 7;
|
|
val = ((val >> b) | (val << (8 - b))) & 0xff;
|
|
val |= val << 8;
|
|
val |= val << 16;
|
|
|
|
/* apply set/reset mask */
|
|
set_mask = mask16[s->gr[1]];
|
|
val = (val & ~set_mask) | (mask16[s->gr[0]] & set_mask);
|
|
bit_mask = s->gr[8];
|
|
break;
|
|
case 1:
|
|
val = s->latch;
|
|
goto do_write;
|
|
case 2:
|
|
val = mask16[val & 0x0f];
|
|
bit_mask = s->gr[8];
|
|
break;
|
|
case 3:
|
|
/* rotate */
|
|
b = s->gr[3] & 7;
|
|
val = (val >> b) | (val << (8 - b));
|
|
|
|
bit_mask = s->gr[8] & val;
|
|
val = mask16[s->gr[0]];
|
|
break;
|
|
}
|
|
|
|
/* apply logical operation */
|
|
func_select = s->gr[3] >> 3;
|
|
switch(func_select) {
|
|
case 0:
|
|
default:
|
|
/* nothing to do */
|
|
break;
|
|
case 1:
|
|
/* and */
|
|
val &= s->latch;
|
|
break;
|
|
case 2:
|
|
/* or */
|
|
val |= s->latch;
|
|
break;
|
|
case 3:
|
|
/* xor */
|
|
val ^= s->latch;
|
|
break;
|
|
}
|
|
|
|
/* apply bit mask */
|
|
bit_mask |= bit_mask << 8;
|
|
bit_mask |= bit_mask << 16;
|
|
val = (val & bit_mask) | (s->latch & ~bit_mask);
|
|
|
|
do_write:
|
|
/* mask data according to sr[2] */
|
|
mask = s->sr[2];
|
|
s->plane_updated |= mask; /* only used to detect font change */
|
|
write_mask = mask16[mask];
|
|
((uint32_t *)s->vram_ptr)[addr] =
|
|
(((uint32_t *)s->vram_ptr)[addr] & ~write_mask) |
|
|
(val & write_mask);
|
|
#ifdef DEBUG_VGA_MEM
|
|
printf("vga: latch: [0x%x] mask=0x%08x val=0x%08x\n",
|
|
addr * 4, write_mask, val);
|
|
#endif
|
|
cpu_physical_memory_set_dirty(s->vram_offset + (addr << 2));
|
|
}
|
|
}
|
|
|
|
static void vga_mem_writew(void *opaque, target_phys_addr_t addr, uint32_t val)
|
|
{
|
|
#ifdef TARGET_WORDS_BIGENDIAN
|
|
vga_mem_writeb(opaque, addr, (val >> 8) & 0xff);
|
|
vga_mem_writeb(opaque, addr + 1, val & 0xff);
|
|
#else
|
|
vga_mem_writeb(opaque, addr, val & 0xff);
|
|
vga_mem_writeb(opaque, addr + 1, (val >> 8) & 0xff);
|
|
#endif
|
|
}
|
|
|
|
static void vga_mem_writel(void *opaque, target_phys_addr_t addr, uint32_t val)
|
|
{
|
|
#ifdef TARGET_WORDS_BIGENDIAN
|
|
vga_mem_writeb(opaque, addr, (val >> 24) & 0xff);
|
|
vga_mem_writeb(opaque, addr + 1, (val >> 16) & 0xff);
|
|
vga_mem_writeb(opaque, addr + 2, (val >> 8) & 0xff);
|
|
vga_mem_writeb(opaque, addr + 3, val & 0xff);
|
|
#else
|
|
vga_mem_writeb(opaque, addr, val & 0xff);
|
|
vga_mem_writeb(opaque, addr + 1, (val >> 8) & 0xff);
|
|
vga_mem_writeb(opaque, addr + 2, (val >> 16) & 0xff);
|
|
vga_mem_writeb(opaque, addr + 3, (val >> 24) & 0xff);
|
|
#endif
|
|
}
|
|
|
|
typedef void vga_draw_glyph8_func(uint8_t *d, int linesize,
|
|
const uint8_t *font_ptr, int h,
|
|
uint32_t fgcol, uint32_t bgcol);
|
|
typedef void vga_draw_glyph9_func(uint8_t *d, int linesize,
|
|
const uint8_t *font_ptr, int h,
|
|
uint32_t fgcol, uint32_t bgcol, int dup9);
|
|
typedef void vga_draw_line_func(VGAState *s1, uint8_t *d,
|
|
const uint8_t *s, int width);
|
|
|
|
static inline unsigned int rgb_to_pixel8(unsigned int r, unsigned int g, unsigned b)
|
|
{
|
|
return ((r >> 5) << 5) | ((g >> 5) << 2) | (b >> 6);
|
|
}
|
|
|
|
static inline unsigned int rgb_to_pixel15(unsigned int r, unsigned int g, unsigned b)
|
|
{
|
|
return ((r >> 3) << 10) | ((g >> 3) << 5) | (b >> 3);
|
|
}
|
|
|
|
static inline unsigned int rgb_to_pixel16(unsigned int r, unsigned int g, unsigned b)
|
|
{
|
|
return ((r >> 3) << 11) | ((g >> 2) << 5) | (b >> 3);
|
|
}
|
|
|
|
static inline unsigned int rgb_to_pixel32(unsigned int r, unsigned int g, unsigned b)
|
|
{
|
|
return (r << 16) | (g << 8) | b;
|
|
}
|
|
|
|
static inline unsigned int rgb_to_pixel32bgr(unsigned int r, unsigned int g, unsigned b)
|
|
{
|
|
return (b << 16) | (g << 8) | r;
|
|
}
|
|
|
|
#define DEPTH 8
|
|
#include "vga_template.h"
|
|
|
|
#define DEPTH 15
|
|
#include "vga_template.h"
|
|
|
|
#define DEPTH 16
|
|
#include "vga_template.h"
|
|
|
|
#define DEPTH 32
|
|
#include "vga_template.h"
|
|
|
|
#define BGR_FORMAT
|
|
#define DEPTH 32
|
|
#include "vga_template.h"
|
|
|
|
static unsigned int rgb_to_pixel8_dup(unsigned int r, unsigned int g, unsigned b)
|
|
{
|
|
unsigned int col;
|
|
col = rgb_to_pixel8(r, g, b);
|
|
col |= col << 8;
|
|
col |= col << 16;
|
|
return col;
|
|
}
|
|
|
|
static unsigned int rgb_to_pixel15_dup(unsigned int r, unsigned int g, unsigned b)
|
|
{
|
|
unsigned int col;
|
|
col = rgb_to_pixel15(r, g, b);
|
|
col |= col << 16;
|
|
return col;
|
|
}
|
|
|
|
static unsigned int rgb_to_pixel16_dup(unsigned int r, unsigned int g, unsigned b)
|
|
{
|
|
unsigned int col;
|
|
col = rgb_to_pixel16(r, g, b);
|
|
col |= col << 16;
|
|
return col;
|
|
}
|
|
|
|
static unsigned int rgb_to_pixel32_dup(unsigned int r, unsigned int g, unsigned b)
|
|
{
|
|
unsigned int col;
|
|
col = rgb_to_pixel32(r, g, b);
|
|
return col;
|
|
}
|
|
|
|
static unsigned int rgb_to_pixel32bgr_dup(unsigned int r, unsigned int g, unsigned b)
|
|
{
|
|
unsigned int col;
|
|
col = rgb_to_pixel32bgr(r, g, b);
|
|
return col;
|
|
}
|
|
|
|
/* return true if the palette was modified */
|
|
static int update_palette16(VGAState *s)
|
|
{
|
|
int full_update, i;
|
|
uint32_t v, col, *palette;
|
|
|
|
full_update = 0;
|
|
palette = s->last_palette;
|
|
for(i = 0; i < 16; i++) {
|
|
v = s->ar[i];
|
|
if (s->ar[0x10] & 0x80)
|
|
v = ((s->ar[0x14] & 0xf) << 4) | (v & 0xf);
|
|
else
|
|
v = ((s->ar[0x14] & 0xc) << 4) | (v & 0x3f);
|
|
v = v * 3;
|
|
col = s->rgb_to_pixel(c6_to_8(s->palette[v]),
|
|
c6_to_8(s->palette[v + 1]),
|
|
c6_to_8(s->palette[v + 2]));
|
|
if (col != palette[i]) {
|
|
full_update = 1;
|
|
palette[i] = col;
|
|
}
|
|
}
|
|
return full_update;
|
|
}
|
|
|
|
/* return true if the palette was modified */
|
|
static int update_palette256(VGAState *s)
|
|
{
|
|
int full_update, i;
|
|
uint32_t v, col, *palette;
|
|
|
|
full_update = 0;
|
|
palette = s->last_palette;
|
|
v = 0;
|
|
for(i = 0; i < 256; i++) {
|
|
col = s->rgb_to_pixel(c6_to_8(s->palette[v]),
|
|
c6_to_8(s->palette[v + 1]),
|
|
c6_to_8(s->palette[v + 2]));
|
|
if (col != palette[i]) {
|
|
full_update = 1;
|
|
palette[i] = col;
|
|
}
|
|
v += 3;
|
|
}
|
|
return full_update;
|
|
}
|
|
|
|
static void vga_get_offsets(VGAState *s,
|
|
uint32_t *pline_offset,
|
|
uint32_t *pstart_addr)
|
|
{
|
|
uint32_t start_addr, line_offset;
|
|
#ifdef CONFIG_BOCHS_VBE
|
|
if (s->vbe_regs[VBE_DISPI_INDEX_ENABLE] & VBE_DISPI_ENABLED) {
|
|
line_offset = s->vbe_line_offset;
|
|
start_addr = s->vbe_start_addr;
|
|
} else
|
|
#endif
|
|
{
|
|
/* compute line_offset in bytes */
|
|
line_offset = s->cr[0x13];
|
|
line_offset <<= 3;
|
|
|
|
/* starting address */
|
|
start_addr = s->cr[0x0d] | (s->cr[0x0c] << 8);
|
|
}
|
|
*pline_offset = line_offset;
|
|
*pstart_addr = start_addr;
|
|
}
|
|
|
|
/* update start_addr and line_offset. Return TRUE if modified */
|
|
static int update_basic_params(VGAState *s)
|
|
{
|
|
int full_update;
|
|
uint32_t start_addr, line_offset, line_compare;
|
|
|
|
full_update = 0;
|
|
|
|
s->get_offsets(s, &line_offset, &start_addr);
|
|
/* line compare */
|
|
line_compare = s->cr[0x18] |
|
|
((s->cr[0x07] & 0x10) << 4) |
|
|
((s->cr[0x09] & 0x40) << 3);
|
|
|
|
if (line_offset != s->line_offset ||
|
|
start_addr != s->start_addr ||
|
|
line_compare != s->line_compare) {
|
|
s->line_offset = line_offset;
|
|
s->start_addr = start_addr;
|
|
s->line_compare = line_compare;
|
|
full_update = 1;
|
|
}
|
|
return full_update;
|
|
}
|
|
|
|
#define NB_DEPTHS 5
|
|
|
|
static inline int get_depth_index(DisplayState *s)
|
|
{
|
|
switch(s->depth) {
|
|
default:
|
|
case 8:
|
|
return 0;
|
|
case 15:
|
|
return 1;
|
|
case 16:
|
|
return 2;
|
|
case 32:
|
|
if (s->bgr)
|
|
return 4;
|
|
else
|
|
return 3;
|
|
}
|
|
}
|
|
|
|
static vga_draw_glyph8_func *vga_draw_glyph8_table[NB_DEPTHS] = {
|
|
vga_draw_glyph8_8,
|
|
vga_draw_glyph8_16,
|
|
vga_draw_glyph8_16,
|
|
vga_draw_glyph8_32,
|
|
vga_draw_glyph8_32,
|
|
};
|
|
|
|
static vga_draw_glyph8_func *vga_draw_glyph16_table[NB_DEPTHS] = {
|
|
vga_draw_glyph16_8,
|
|
vga_draw_glyph16_16,
|
|
vga_draw_glyph16_16,
|
|
vga_draw_glyph16_32,
|
|
vga_draw_glyph16_32,
|
|
};
|
|
|
|
static vga_draw_glyph9_func *vga_draw_glyph9_table[NB_DEPTHS] = {
|
|
vga_draw_glyph9_8,
|
|
vga_draw_glyph9_16,
|
|
vga_draw_glyph9_16,
|
|
vga_draw_glyph9_32,
|
|
vga_draw_glyph9_32,
|
|
};
|
|
|
|
static const uint8_t cursor_glyph[32 * 4] = {
|
|
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
|
|
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
|
|
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
|
|
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
|
|
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
|
|
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
|
|
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
|
|
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
|
|
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
|
|
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
|
|
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
|
|
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
|
|
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
|
|
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
|
|
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
|
|
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
|
|
};
|
|
|
|
/*
|
|
* Text mode update
|
|
* Missing:
|
|
* - double scan
|
|
* - double width
|
|
* - underline
|
|
* - flashing
|
|
*/
|
|
static void vga_draw_text(VGAState *s, int full_update)
|
|
{
|
|
int cx, cy, cheight, cw, ch, cattr, height, width, ch_attr;
|
|
int cx_min, cx_max, linesize, x_incr;
|
|
uint32_t offset, fgcol, bgcol, v, cursor_offset;
|
|
uint8_t *d1, *d, *src, *s1, *dest, *cursor_ptr;
|
|
const uint8_t *font_ptr, *font_base[2];
|
|
int dup9, line_offset, depth_index;
|
|
uint32_t *palette;
|
|
uint32_t *ch_attr_ptr;
|
|
vga_draw_glyph8_func *vga_draw_glyph8;
|
|
vga_draw_glyph9_func *vga_draw_glyph9;
|
|
|
|
full_update |= update_palette16(s);
|
|
palette = s->last_palette;
|
|
|
|
/* compute font data address (in plane 2) */
|
|
v = s->sr[3];
|
|
offset = (((v >> 4) & 1) | ((v << 1) & 6)) * 8192 * 4 + 2;
|
|
if (offset != s->font_offsets[0]) {
|
|
s->font_offsets[0] = offset;
|
|
full_update = 1;
|
|
}
|
|
font_base[0] = s->vram_ptr + offset;
|
|
|
|
offset = (((v >> 5) & 1) | ((v >> 1) & 6)) * 8192 * 4 + 2;
|
|
font_base[1] = s->vram_ptr + offset;
|
|
if (offset != s->font_offsets[1]) {
|
|
s->font_offsets[1] = offset;
|
|
full_update = 1;
|
|
}
|
|
if (s->plane_updated & (1 << 2)) {
|
|
/* if the plane 2 was modified since the last display, it
|
|
indicates the font may have been modified */
|
|
s->plane_updated = 0;
|
|
full_update = 1;
|
|
}
|
|
full_update |= update_basic_params(s);
|
|
|
|
line_offset = s->line_offset;
|
|
s1 = s->vram_ptr + (s->start_addr * 4);
|
|
|
|
/* total width & height */
|
|
cheight = (s->cr[9] & 0x1f) + 1;
|
|
cw = 8;
|
|
if (!(s->sr[1] & 0x01))
|
|
cw = 9;
|
|
if (s->sr[1] & 0x08)
|
|
cw = 16; /* NOTE: no 18 pixel wide */
|
|
x_incr = cw * ((s->ds->depth + 7) >> 3);
|
|
width = (s->cr[0x01] + 1);
|
|
if (s->cr[0x06] == 100) {
|
|
/* ugly hack for CGA 160x100x16 - explain me the logic */
|
|
height = 100;
|
|
} else {
|
|
height = s->cr[0x12] |
|
|
((s->cr[0x07] & 0x02) << 7) |
|
|
((s->cr[0x07] & 0x40) << 3);
|
|
height = (height + 1) / cheight;
|
|
}
|
|
if ((height * width) > CH_ATTR_SIZE) {
|
|
/* better than nothing: exit if transient size is too big */
|
|
return;
|
|
}
|
|
|
|
if (width != s->last_width || height != s->last_height ||
|
|
cw != s->last_cw || cheight != s->last_ch) {
|
|
s->last_scr_width = width * cw;
|
|
s->last_scr_height = height * cheight;
|
|
dpy_resize(s->ds, s->last_scr_width, s->last_scr_height);
|
|
s->last_width = width;
|
|
s->last_height = height;
|
|
s->last_ch = cheight;
|
|
s->last_cw = cw;
|
|
full_update = 1;
|
|
}
|
|
cursor_offset = ((s->cr[0x0e] << 8) | s->cr[0x0f]) - s->start_addr;
|
|
if (cursor_offset != s->cursor_offset ||
|
|
s->cr[0xa] != s->cursor_start ||
|
|
s->cr[0xb] != s->cursor_end) {
|
|
/* if the cursor position changed, we update the old and new
|
|
chars */
|
|
if (s->cursor_offset < CH_ATTR_SIZE)
|
|
s->last_ch_attr[s->cursor_offset] = -1;
|
|
if (cursor_offset < CH_ATTR_SIZE)
|
|
s->last_ch_attr[cursor_offset] = -1;
|
|
s->cursor_offset = cursor_offset;
|
|
s->cursor_start = s->cr[0xa];
|
|
s->cursor_end = s->cr[0xb];
|
|
}
|
|
cursor_ptr = s->vram_ptr + (s->start_addr + cursor_offset) * 4;
|
|
|
|
depth_index = get_depth_index(s->ds);
|
|
if (cw == 16)
|
|
vga_draw_glyph8 = vga_draw_glyph16_table[depth_index];
|
|
else
|
|
vga_draw_glyph8 = vga_draw_glyph8_table[depth_index];
|
|
vga_draw_glyph9 = vga_draw_glyph9_table[depth_index];
|
|
|
|
dest = s->ds->data;
|
|
linesize = s->ds->linesize;
|
|
ch_attr_ptr = s->last_ch_attr;
|
|
for(cy = 0; cy < height; cy++) {
|
|
d1 = dest;
|
|
src = s1;
|
|
cx_min = width;
|
|
cx_max = -1;
|
|
for(cx = 0; cx < width; cx++) {
|
|
ch_attr = *(uint16_t *)src;
|
|
if (full_update || ch_attr != *ch_attr_ptr) {
|
|
if (cx < cx_min)
|
|
cx_min = cx;
|
|
if (cx > cx_max)
|
|
cx_max = cx;
|
|
*ch_attr_ptr = ch_attr;
|
|
#ifdef WORDS_BIGENDIAN
|
|
ch = ch_attr >> 8;
|
|
cattr = ch_attr & 0xff;
|
|
#else
|
|
ch = ch_attr & 0xff;
|
|
cattr = ch_attr >> 8;
|
|
#endif
|
|
font_ptr = font_base[(cattr >> 3) & 1];
|
|
font_ptr += 32 * 4 * ch;
|
|
bgcol = palette[cattr >> 4];
|
|
fgcol = palette[cattr & 0x0f];
|
|
if (cw != 9) {
|
|
vga_draw_glyph8(d1, linesize,
|
|
font_ptr, cheight, fgcol, bgcol);
|
|
} else {
|
|
dup9 = 0;
|
|
if (ch >= 0xb0 && ch <= 0xdf && (s->ar[0x10] & 0x04))
|
|
dup9 = 1;
|
|
vga_draw_glyph9(d1, linesize,
|
|
font_ptr, cheight, fgcol, bgcol, dup9);
|
|
}
|
|
if (src == cursor_ptr &&
|
|
!(s->cr[0x0a] & 0x20)) {
|
|
int line_start, line_last, h;
|
|
/* draw the cursor */
|
|
line_start = s->cr[0x0a] & 0x1f;
|
|
line_last = s->cr[0x0b] & 0x1f;
|
|
/* XXX: check that */
|
|
if (line_last > cheight - 1)
|
|
line_last = cheight - 1;
|
|
if (line_last >= line_start && line_start < cheight) {
|
|
h = line_last - line_start + 1;
|
|
d = d1 + linesize * line_start;
|
|
if (cw != 9) {
|
|
vga_draw_glyph8(d, linesize,
|
|
cursor_glyph, h, fgcol, bgcol);
|
|
} else {
|
|
vga_draw_glyph9(d, linesize,
|
|
cursor_glyph, h, fgcol, bgcol, 1);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
d1 += x_incr;
|
|
src += 4;
|
|
ch_attr_ptr++;
|
|
}
|
|
if (cx_max != -1) {
|
|
dpy_update(s->ds, cx_min * cw, cy * cheight,
|
|
(cx_max - cx_min + 1) * cw, cheight);
|
|
}
|
|
dest += linesize * cheight;
|
|
s1 += line_offset;
|
|
}
|
|
}
|
|
|
|
enum {
|
|
VGA_DRAW_LINE2,
|
|
VGA_DRAW_LINE2D2,
|
|
VGA_DRAW_LINE4,
|
|
VGA_DRAW_LINE4D2,
|
|
VGA_DRAW_LINE8D2,
|
|
VGA_DRAW_LINE8,
|
|
VGA_DRAW_LINE15,
|
|
VGA_DRAW_LINE16,
|
|
VGA_DRAW_LINE24,
|
|
VGA_DRAW_LINE32,
|
|
VGA_DRAW_LINE_NB,
|
|
};
|
|
|
|
static vga_draw_line_func *vga_draw_line_table[NB_DEPTHS * VGA_DRAW_LINE_NB] = {
|
|
vga_draw_line2_8,
|
|
vga_draw_line2_16,
|
|
vga_draw_line2_16,
|
|
vga_draw_line2_32,
|
|
vga_draw_line2_32,
|
|
|
|
vga_draw_line2d2_8,
|
|
vga_draw_line2d2_16,
|
|
vga_draw_line2d2_16,
|
|
vga_draw_line2d2_32,
|
|
vga_draw_line2d2_32,
|
|
|
|
vga_draw_line4_8,
|
|
vga_draw_line4_16,
|
|
vga_draw_line4_16,
|
|
vga_draw_line4_32,
|
|
vga_draw_line4_32,
|
|
|
|
vga_draw_line4d2_8,
|
|
vga_draw_line4d2_16,
|
|
vga_draw_line4d2_16,
|
|
vga_draw_line4d2_32,
|
|
vga_draw_line4d2_32,
|
|
|
|
vga_draw_line8d2_8,
|
|
vga_draw_line8d2_16,
|
|
vga_draw_line8d2_16,
|
|
vga_draw_line8d2_32,
|
|
vga_draw_line8d2_32,
|
|
|
|
vga_draw_line8_8,
|
|
vga_draw_line8_16,
|
|
vga_draw_line8_16,
|
|
vga_draw_line8_32,
|
|
vga_draw_line8_32,
|
|
|
|
vga_draw_line15_8,
|
|
vga_draw_line15_15,
|
|
vga_draw_line15_16,
|
|
vga_draw_line15_32,
|
|
vga_draw_line15_32bgr,
|
|
|
|
vga_draw_line16_8,
|
|
vga_draw_line16_15,
|
|
vga_draw_line16_16,
|
|
vga_draw_line16_32,
|
|
vga_draw_line16_32bgr,
|
|
|
|
vga_draw_line24_8,
|
|
vga_draw_line24_15,
|
|
vga_draw_line24_16,
|
|
vga_draw_line24_32,
|
|
vga_draw_line24_32bgr,
|
|
|
|
vga_draw_line32_8,
|
|
vga_draw_line32_15,
|
|
vga_draw_line32_16,
|
|
vga_draw_line32_32,
|
|
vga_draw_line32_32bgr,
|
|
};
|
|
|
|
typedef unsigned int rgb_to_pixel_dup_func(unsigned int r, unsigned int g, unsigned b);
|
|
|
|
static rgb_to_pixel_dup_func *rgb_to_pixel_dup_table[NB_DEPTHS] = {
|
|
rgb_to_pixel8_dup,
|
|
rgb_to_pixel15_dup,
|
|
rgb_to_pixel16_dup,
|
|
rgb_to_pixel32_dup,
|
|
rgb_to_pixel32bgr_dup,
|
|
};
|
|
|
|
static int vga_get_bpp(VGAState *s)
|
|
{
|
|
int ret;
|
|
#ifdef CONFIG_BOCHS_VBE
|
|
if (s->vbe_regs[VBE_DISPI_INDEX_ENABLE] & VBE_DISPI_ENABLED) {
|
|
ret = s->vbe_regs[VBE_DISPI_INDEX_BPP];
|
|
} else
|
|
#endif
|
|
{
|
|
ret = 0;
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
static void vga_get_resolution(VGAState *s, int *pwidth, int *pheight)
|
|
{
|
|
int width, height;
|
|
|
|
#ifdef CONFIG_BOCHS_VBE
|
|
if (s->vbe_regs[VBE_DISPI_INDEX_ENABLE] & VBE_DISPI_ENABLED) {
|
|
width = s->vbe_regs[VBE_DISPI_INDEX_XRES];
|
|
height = s->vbe_regs[VBE_DISPI_INDEX_YRES];
|
|
} else
|
|
#endif
|
|
{
|
|
width = (s->cr[0x01] + 1) * 8;
|
|
height = s->cr[0x12] |
|
|
((s->cr[0x07] & 0x02) << 7) |
|
|
((s->cr[0x07] & 0x40) << 3);
|
|
height = (height + 1);
|
|
}
|
|
*pwidth = width;
|
|
*pheight = height;
|
|
}
|
|
|
|
void vga_invalidate_scanlines(VGAState *s, int y1, int y2)
|
|
{
|
|
int y;
|
|
if (y1 >= VGA_MAX_HEIGHT)
|
|
return;
|
|
if (y2 >= VGA_MAX_HEIGHT)
|
|
y2 = VGA_MAX_HEIGHT;
|
|
for(y = y1; y < y2; y++) {
|
|
s->invalidated_y_table[y >> 5] |= 1 << (y & 0x1f);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* graphic modes
|
|
*/
|
|
static void vga_draw_graphic(VGAState *s, int full_update)
|
|
{
|
|
int y1, y, update, page_min, page_max, linesize, y_start, double_scan, mask;
|
|
int width, height, shift_control, line_offset, page0, page1, bwidth;
|
|
int disp_width, multi_scan, multi_run;
|
|
uint8_t *d;
|
|
uint32_t v, addr1, addr;
|
|
vga_draw_line_func *vga_draw_line;
|
|
|
|
full_update |= update_basic_params(s);
|
|
|
|
s->get_resolution(s, &width, &height);
|
|
disp_width = width;
|
|
|
|
shift_control = (s->gr[0x05] >> 5) & 3;
|
|
double_scan = (s->cr[0x09] >> 7);
|
|
if (shift_control != 1) {
|
|
multi_scan = (((s->cr[0x09] & 0x1f) + 1) << double_scan) - 1;
|
|
} else {
|
|
/* in CGA modes, multi_scan is ignored */
|
|
/* XXX: is it correct ? */
|
|
multi_scan = double_scan;
|
|
}
|
|
multi_run = multi_scan;
|
|
if (shift_control != s->shift_control ||
|
|
double_scan != s->double_scan) {
|
|
full_update = 1;
|
|
s->shift_control = shift_control;
|
|
s->double_scan = double_scan;
|
|
}
|
|
|
|
if (shift_control == 0) {
|
|
full_update |= update_palette16(s);
|
|
if (s->sr[0x01] & 8) {
|
|
v = VGA_DRAW_LINE4D2;
|
|
disp_width <<= 1;
|
|
} else {
|
|
v = VGA_DRAW_LINE4;
|
|
}
|
|
} else if (shift_control == 1) {
|
|
full_update |= update_palette16(s);
|
|
if (s->sr[0x01] & 8) {
|
|
v = VGA_DRAW_LINE2D2;
|
|
disp_width <<= 1;
|
|
} else {
|
|
v = VGA_DRAW_LINE2;
|
|
}
|
|
} else {
|
|
switch(s->get_bpp(s)) {
|
|
default:
|
|
case 0:
|
|
full_update |= update_palette256(s);
|
|
v = VGA_DRAW_LINE8D2;
|
|
break;
|
|
case 8:
|
|
full_update |= update_palette256(s);
|
|
v = VGA_DRAW_LINE8;
|
|
break;
|
|
case 15:
|
|
v = VGA_DRAW_LINE15;
|
|
break;
|
|
case 16:
|
|
v = VGA_DRAW_LINE16;
|
|
break;
|
|
case 24:
|
|
v = VGA_DRAW_LINE24;
|
|
break;
|
|
case 32:
|
|
v = VGA_DRAW_LINE32;
|
|
break;
|
|
}
|
|
}
|
|
vga_draw_line = vga_draw_line_table[v * NB_DEPTHS + get_depth_index(s->ds)];
|
|
|
|
if (disp_width != s->last_width ||
|
|
height != s->last_height) {
|
|
dpy_resize(s->ds, disp_width, height);
|
|
s->last_scr_width = disp_width;
|
|
s->last_scr_height = height;
|
|
s->last_width = disp_width;
|
|
s->last_height = height;
|
|
full_update = 1;
|
|
}
|
|
if (s->cursor_invalidate)
|
|
s->cursor_invalidate(s);
|
|
|
|
line_offset = s->line_offset;
|
|
#if 0
|
|
printf("w=%d h=%d v=%d line_offset=%d cr[0x09]=0x%02x cr[0x17]=0x%02x linecmp=%d sr[0x01]=0x%02x\n",
|
|
width, height, v, line_offset, s->cr[9], s->cr[0x17], s->line_compare, s->sr[0x01]);
|
|
#endif
|
|
addr1 = (s->start_addr * 4);
|
|
bwidth = width * 4;
|
|
y_start = -1;
|
|
page_min = 0x7fffffff;
|
|
page_max = -1;
|
|
d = s->ds->data;
|
|
linesize = s->ds->linesize;
|
|
y1 = 0;
|
|
for(y = 0; y < height; y++) {
|
|
addr = addr1;
|
|
if (!(s->cr[0x17] & 1)) {
|
|
int shift;
|
|
/* CGA compatibility handling */
|
|
shift = 14 + ((s->cr[0x17] >> 6) & 1);
|
|
addr = (addr & ~(1 << shift)) | ((y1 & 1) << shift);
|
|
}
|
|
if (!(s->cr[0x17] & 2)) {
|
|
addr = (addr & ~0x8000) | ((y1 & 2) << 14);
|
|
}
|
|
page0 = s->vram_offset + (addr & TARGET_PAGE_MASK);
|
|
page1 = s->vram_offset + ((addr + bwidth - 1) & TARGET_PAGE_MASK);
|
|
update = full_update |
|
|
cpu_physical_memory_get_dirty(page0, VGA_DIRTY_FLAG) |
|
|
cpu_physical_memory_get_dirty(page1, VGA_DIRTY_FLAG);
|
|
if ((page1 - page0) > TARGET_PAGE_SIZE) {
|
|
/* if wide line, can use another page */
|
|
update |= cpu_physical_memory_get_dirty(page0 + TARGET_PAGE_SIZE,
|
|
VGA_DIRTY_FLAG);
|
|
}
|
|
/* explicit invalidation for the hardware cursor */
|
|
update |= (s->invalidated_y_table[y >> 5] >> (y & 0x1f)) & 1;
|
|
if (update) {
|
|
if (y_start < 0)
|
|
y_start = y;
|
|
if (page0 < page_min)
|
|
page_min = page0;
|
|
if (page1 > page_max)
|
|
page_max = page1;
|
|
vga_draw_line(s, d, s->vram_ptr + addr, width);
|
|
if (s->cursor_draw_line)
|
|
s->cursor_draw_line(s, d, y);
|
|
} else {
|
|
if (y_start >= 0) {
|
|
/* flush to display */
|
|
dpy_update(s->ds, 0, y_start,
|
|
disp_width, y - y_start);
|
|
y_start = -1;
|
|
}
|
|
}
|
|
if (!multi_run) {
|
|
mask = (s->cr[0x17] & 3) ^ 3;
|
|
if ((y1 & mask) == mask)
|
|
addr1 += line_offset;
|
|
y1++;
|
|
multi_run = multi_scan;
|
|
} else {
|
|
multi_run--;
|
|
}
|
|
/* line compare acts on the displayed lines */
|
|
if (y == s->line_compare)
|
|
addr1 = 0;
|
|
d += linesize;
|
|
}
|
|
if (y_start >= 0) {
|
|
/* flush to display */
|
|
dpy_update(s->ds, 0, y_start,
|
|
disp_width, y - y_start);
|
|
}
|
|
/* reset modified pages */
|
|
if (page_max != -1) {
|
|
cpu_physical_memory_reset_dirty(page_min, page_max + TARGET_PAGE_SIZE,
|
|
VGA_DIRTY_FLAG);
|
|
}
|
|
memset(s->invalidated_y_table, 0, ((height + 31) >> 5) * 4);
|
|
}
|
|
|
|
static void vga_draw_blank(VGAState *s, int full_update)
|
|
{
|
|
int i, w, val;
|
|
uint8_t *d;
|
|
|
|
if (!full_update)
|
|
return;
|
|
if (s->last_scr_width <= 0 || s->last_scr_height <= 0)
|
|
return;
|
|
if (s->ds->depth == 8)
|
|
val = s->rgb_to_pixel(0, 0, 0);
|
|
else
|
|
val = 0;
|
|
w = s->last_scr_width * ((s->ds->depth + 7) >> 3);
|
|
d = s->ds->data;
|
|
for(i = 0; i < s->last_scr_height; i++) {
|
|
memset(d, val, w);
|
|
d += s->ds->linesize;
|
|
}
|
|
dpy_update(s->ds, 0, 0,
|
|
s->last_scr_width, s->last_scr_height);
|
|
}
|
|
|
|
#define GMODE_TEXT 0
|
|
#define GMODE_GRAPH 1
|
|
#define GMODE_BLANK 2
|
|
|
|
static void vga_update_display(void *opaque)
|
|
{
|
|
VGAState *s = (VGAState *)opaque;
|
|
int full_update, graphic_mode;
|
|
|
|
if (s->ds->depth == 0) {
|
|
/* nothing to do */
|
|
} else {
|
|
s->rgb_to_pixel =
|
|
rgb_to_pixel_dup_table[get_depth_index(s->ds)];
|
|
|
|
full_update = 0;
|
|
if (!(s->ar_index & 0x20)) {
|
|
graphic_mode = GMODE_BLANK;
|
|
} else {
|
|
graphic_mode = s->gr[6] & 1;
|
|
}
|
|
if (graphic_mode != s->graphic_mode) {
|
|
s->graphic_mode = graphic_mode;
|
|
full_update = 1;
|
|
}
|
|
switch(graphic_mode) {
|
|
case GMODE_TEXT:
|
|
vga_draw_text(s, full_update);
|
|
break;
|
|
case GMODE_GRAPH:
|
|
vga_draw_graphic(s, full_update);
|
|
break;
|
|
case GMODE_BLANK:
|
|
default:
|
|
vga_draw_blank(s, full_update);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
/* force a full display refresh */
|
|
static void vga_invalidate_display(void *opaque)
|
|
{
|
|
VGAState *s = (VGAState *)opaque;
|
|
|
|
s->last_width = -1;
|
|
s->last_height = -1;
|
|
}
|
|
|
|
static void vga_reset(VGAState *s)
|
|
{
|
|
memset(s, 0, sizeof(VGAState));
|
|
s->graphic_mode = -1; /* force full update */
|
|
}
|
|
|
|
static CPUReadMemoryFunc *vga_mem_read[3] = {
|
|
vga_mem_readb,
|
|
vga_mem_readw,
|
|
vga_mem_readl,
|
|
};
|
|
|
|
static CPUWriteMemoryFunc *vga_mem_write[3] = {
|
|
vga_mem_writeb,
|
|
vga_mem_writew,
|
|
vga_mem_writel,
|
|
};
|
|
|
|
static void vga_save(QEMUFile *f, void *opaque)
|
|
{
|
|
VGAState *s = opaque;
|
|
int i;
|
|
|
|
qemu_put_be32s(f, &s->latch);
|
|
qemu_put_8s(f, &s->sr_index);
|
|
qemu_put_buffer(f, s->sr, 8);
|
|
qemu_put_8s(f, &s->gr_index);
|
|
qemu_put_buffer(f, s->gr, 16);
|
|
qemu_put_8s(f, &s->ar_index);
|
|
qemu_put_buffer(f, s->ar, 21);
|
|
qemu_put_be32s(f, &s->ar_flip_flop);
|
|
qemu_put_8s(f, &s->cr_index);
|
|
qemu_put_buffer(f, s->cr, 256);
|
|
qemu_put_8s(f, &s->msr);
|
|
qemu_put_8s(f, &s->fcr);
|
|
qemu_put_8s(f, &s->st00);
|
|
qemu_put_8s(f, &s->st01);
|
|
|
|
qemu_put_8s(f, &s->dac_state);
|
|
qemu_put_8s(f, &s->dac_sub_index);
|
|
qemu_put_8s(f, &s->dac_read_index);
|
|
qemu_put_8s(f, &s->dac_write_index);
|
|
qemu_put_buffer(f, s->dac_cache, 3);
|
|
qemu_put_buffer(f, s->palette, 768);
|
|
|
|
qemu_put_be32s(f, &s->bank_offset);
|
|
#ifdef CONFIG_BOCHS_VBE
|
|
qemu_put_byte(f, 1);
|
|
qemu_put_be16s(f, &s->vbe_index);
|
|
for(i = 0; i < VBE_DISPI_INDEX_NB; i++)
|
|
qemu_put_be16s(f, &s->vbe_regs[i]);
|
|
qemu_put_be32s(f, &s->vbe_start_addr);
|
|
qemu_put_be32s(f, &s->vbe_line_offset);
|
|
qemu_put_be32s(f, &s->vbe_bank_mask);
|
|
#else
|
|
qemu_put_byte(f, 0);
|
|
#endif
|
|
}
|
|
|
|
static int vga_load(QEMUFile *f, void *opaque, int version_id)
|
|
{
|
|
VGAState *s = opaque;
|
|
int is_vbe, i;
|
|
|
|
if (version_id != 1)
|
|
return -EINVAL;
|
|
|
|
qemu_get_be32s(f, &s->latch);
|
|
qemu_get_8s(f, &s->sr_index);
|
|
qemu_get_buffer(f, s->sr, 8);
|
|
qemu_get_8s(f, &s->gr_index);
|
|
qemu_get_buffer(f, s->gr, 16);
|
|
qemu_get_8s(f, &s->ar_index);
|
|
qemu_get_buffer(f, s->ar, 21);
|
|
qemu_get_be32s(f, &s->ar_flip_flop);
|
|
qemu_get_8s(f, &s->cr_index);
|
|
qemu_get_buffer(f, s->cr, 256);
|
|
qemu_get_8s(f, &s->msr);
|
|
qemu_get_8s(f, &s->fcr);
|
|
qemu_get_8s(f, &s->st00);
|
|
qemu_get_8s(f, &s->st01);
|
|
|
|
qemu_get_8s(f, &s->dac_state);
|
|
qemu_get_8s(f, &s->dac_sub_index);
|
|
qemu_get_8s(f, &s->dac_read_index);
|
|
qemu_get_8s(f, &s->dac_write_index);
|
|
qemu_get_buffer(f, s->dac_cache, 3);
|
|
qemu_get_buffer(f, s->palette, 768);
|
|
|
|
qemu_get_be32s(f, &s->bank_offset);
|
|
is_vbe = qemu_get_byte(f);
|
|
#ifdef CONFIG_BOCHS_VBE
|
|
if (!is_vbe)
|
|
return -EINVAL;
|
|
qemu_get_be16s(f, &s->vbe_index);
|
|
for(i = 0; i < VBE_DISPI_INDEX_NB; i++)
|
|
qemu_get_be16s(f, &s->vbe_regs[i]);
|
|
qemu_get_be32s(f, &s->vbe_start_addr);
|
|
qemu_get_be32s(f, &s->vbe_line_offset);
|
|
qemu_get_be32s(f, &s->vbe_bank_mask);
|
|
#else
|
|
if (is_vbe)
|
|
return -EINVAL;
|
|
#endif
|
|
|
|
/* force refresh */
|
|
s->graphic_mode = -1;
|
|
return 0;
|
|
}
|
|
|
|
static void vga_map(PCIDevice *pci_dev, int region_num,
|
|
uint32_t addr, uint32_t size, int type)
|
|
{
|
|
VGAState *s = vga_state;
|
|
if (region_num == PCI_ROM_SLOT) {
|
|
cpu_register_physical_memory(addr, s->bios_size, s->bios_offset);
|
|
} else {
|
|
cpu_register_physical_memory(addr, s->vram_size, s->vram_offset);
|
|
}
|
|
}
|
|
|
|
void vga_common_init(VGAState *s, DisplayState *ds, uint8_t *vga_ram_base,
|
|
unsigned long vga_ram_offset, int vga_ram_size)
|
|
{
|
|
int i, j, v, b;
|
|
|
|
for(i = 0;i < 256; i++) {
|
|
v = 0;
|
|
for(j = 0; j < 8; j++) {
|
|
v |= ((i >> j) & 1) << (j * 4);
|
|
}
|
|
expand4[i] = v;
|
|
|
|
v = 0;
|
|
for(j = 0; j < 4; j++) {
|
|
v |= ((i >> (2 * j)) & 3) << (j * 4);
|
|
}
|
|
expand2[i] = v;
|
|
}
|
|
for(i = 0; i < 16; i++) {
|
|
v = 0;
|
|
for(j = 0; j < 4; j++) {
|
|
b = ((i >> j) & 1);
|
|
v |= b << (2 * j);
|
|
v |= b << (2 * j + 1);
|
|
}
|
|
expand4to8[i] = v;
|
|
}
|
|
|
|
vga_reset(s);
|
|
|
|
s->vram_ptr = vga_ram_base;
|
|
s->vram_offset = vga_ram_offset;
|
|
s->vram_size = vga_ram_size;
|
|
s->ds = ds;
|
|
s->get_bpp = vga_get_bpp;
|
|
s->get_offsets = vga_get_offsets;
|
|
s->get_resolution = vga_get_resolution;
|
|
graphic_console_init(s->ds, vga_update_display, vga_invalidate_display,
|
|
vga_screen_dump, s);
|
|
/* XXX: currently needed for display */
|
|
vga_state = s;
|
|
}
|
|
|
|
|
|
int vga_initialize(PCIBus *bus, DisplayState *ds, uint8_t *vga_ram_base,
|
|
unsigned long vga_ram_offset, int vga_ram_size,
|
|
unsigned long vga_bios_offset, int vga_bios_size)
|
|
{
|
|
VGAState *s;
|
|
|
|
s = qemu_mallocz(sizeof(VGAState));
|
|
if (!s)
|
|
return -1;
|
|
|
|
vga_common_init(s, ds, vga_ram_base, vga_ram_offset, vga_ram_size);
|
|
|
|
register_savevm("vga", 0, 1, vga_save, vga_load, s);
|
|
|
|
register_ioport_write(0x3c0, 16, 1, vga_ioport_write, s);
|
|
|
|
register_ioport_write(0x3b4, 2, 1, vga_ioport_write, s);
|
|
register_ioport_write(0x3d4, 2, 1, vga_ioport_write, s);
|
|
register_ioport_write(0x3ba, 1, 1, vga_ioport_write, s);
|
|
register_ioport_write(0x3da, 1, 1, vga_ioport_write, s);
|
|
|
|
register_ioport_read(0x3c0, 16, 1, vga_ioport_read, s);
|
|
|
|
register_ioport_read(0x3b4, 2, 1, vga_ioport_read, s);
|
|
register_ioport_read(0x3d4, 2, 1, vga_ioport_read, s);
|
|
register_ioport_read(0x3ba, 1, 1, vga_ioport_read, s);
|
|
register_ioport_read(0x3da, 1, 1, vga_ioport_read, s);
|
|
s->bank_offset = 0;
|
|
|
|
#ifdef CONFIG_BOCHS_VBE
|
|
s->vbe_regs[VBE_DISPI_INDEX_ID] = VBE_DISPI_ID0;
|
|
s->vbe_bank_mask = ((s->vram_size >> 16) - 1);
|
|
#if defined (TARGET_I386)
|
|
register_ioport_read(0x1ce, 1, 2, vbe_ioport_read_index, s);
|
|
register_ioport_read(0x1cf, 1, 2, vbe_ioport_read_data, s);
|
|
|
|
register_ioport_write(0x1ce, 1, 2, vbe_ioport_write_index, s);
|
|
register_ioport_write(0x1cf, 1, 2, vbe_ioport_write_data, s);
|
|
|
|
/* old Bochs IO ports */
|
|
register_ioport_read(0xff80, 1, 2, vbe_ioport_read_index, s);
|
|
register_ioport_read(0xff81, 1, 2, vbe_ioport_read_data, s);
|
|
|
|
register_ioport_write(0xff80, 1, 2, vbe_ioport_write_index, s);
|
|
register_ioport_write(0xff81, 1, 2, vbe_ioport_write_data, s);
|
|
#else
|
|
register_ioport_read(0x1ce, 1, 2, vbe_ioport_read_index, s);
|
|
register_ioport_read(0x1d0, 1, 2, vbe_ioport_read_data, s);
|
|
|
|
register_ioport_write(0x1ce, 1, 2, vbe_ioport_write_index, s);
|
|
register_ioport_write(0x1d0, 1, 2, vbe_ioport_write_data, s);
|
|
#endif
|
|
#endif /* CONFIG_BOCHS_VBE */
|
|
|
|
vga_io_memory = cpu_register_io_memory(0, vga_mem_read, vga_mem_write, s);
|
|
cpu_register_physical_memory(isa_mem_base + 0x000a0000, 0x20000,
|
|
vga_io_memory);
|
|
|
|
if (bus) {
|
|
PCIDevice *d;
|
|
uint8_t *pci_conf;
|
|
|
|
d = pci_register_device(bus, "VGA",
|
|
sizeof(PCIDevice),
|
|
-1, NULL, NULL);
|
|
pci_conf = d->config;
|
|
pci_conf[0x00] = 0x34; // dummy VGA (same as Bochs ID)
|
|
pci_conf[0x01] = 0x12;
|
|
pci_conf[0x02] = 0x11;
|
|
pci_conf[0x03] = 0x11;
|
|
pci_conf[0x0a] = 0x00; // VGA controller
|
|
pci_conf[0x0b] = 0x03;
|
|
pci_conf[0x0e] = 0x00; // header_type
|
|
|
|
/* XXX: vga_ram_size must be a power of two */
|
|
pci_register_io_region(d, 0, vga_ram_size,
|
|
PCI_ADDRESS_SPACE_MEM_PREFETCH, vga_map);
|
|
if (vga_bios_size != 0) {
|
|
unsigned int bios_total_size;
|
|
s->bios_offset = vga_bios_offset;
|
|
s->bios_size = vga_bios_size;
|
|
/* must be a power of two */
|
|
bios_total_size = 1;
|
|
while (bios_total_size < vga_bios_size)
|
|
bios_total_size <<= 1;
|
|
pci_register_io_region(d, PCI_ROM_SLOT, bios_total_size,
|
|
PCI_ADDRESS_SPACE_MEM_PREFETCH, vga_map);
|
|
}
|
|
} else {
|
|
#ifdef CONFIG_BOCHS_VBE
|
|
/* XXX: use optimized standard vga accesses */
|
|
cpu_register_physical_memory(VBE_DISPI_LFB_PHYSICAL_ADDRESS,
|
|
vga_ram_size, vga_ram_offset);
|
|
#endif
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/********************************************************/
|
|
/* vga screen dump */
|
|
|
|
static int vga_save_w, vga_save_h;
|
|
|
|
static void vga_save_dpy_update(DisplayState *s,
|
|
int x, int y, int w, int h)
|
|
{
|
|
}
|
|
|
|
static void vga_save_dpy_resize(DisplayState *s, int w, int h)
|
|
{
|
|
s->linesize = w * 4;
|
|
s->data = qemu_malloc(h * s->linesize);
|
|
vga_save_w = w;
|
|
vga_save_h = h;
|
|
}
|
|
|
|
static void vga_save_dpy_refresh(DisplayState *s)
|
|
{
|
|
}
|
|
|
|
static int ppm_save(const char *filename, uint8_t *data,
|
|
int w, int h, int linesize)
|
|
{
|
|
FILE *f;
|
|
uint8_t *d, *d1;
|
|
unsigned int v;
|
|
int y, x;
|
|
|
|
f = fopen(filename, "wb");
|
|
if (!f)
|
|
return -1;
|
|
fprintf(f, "P6\n%d %d\n%d\n",
|
|
w, h, 255);
|
|
d1 = data;
|
|
for(y = 0; y < h; y++) {
|
|
d = d1;
|
|
for(x = 0; x < w; x++) {
|
|
v = *(uint32_t *)d;
|
|
fputc((v >> 16) & 0xff, f);
|
|
fputc((v >> 8) & 0xff, f);
|
|
fputc((v) & 0xff, f);
|
|
d += 4;
|
|
}
|
|
d1 += linesize;
|
|
}
|
|
fclose(f);
|
|
return 0;
|
|
}
|
|
|
|
/* save the vga display in a PPM image even if no display is
|
|
available */
|
|
static void vga_screen_dump(void *opaque, const char *filename)
|
|
{
|
|
VGAState *s = (VGAState *)opaque;
|
|
DisplayState *saved_ds, ds1, *ds = &ds1;
|
|
|
|
/* XXX: this is a little hackish */
|
|
vga_invalidate_display(s);
|
|
saved_ds = s->ds;
|
|
|
|
memset(ds, 0, sizeof(DisplayState));
|
|
ds->dpy_update = vga_save_dpy_update;
|
|
ds->dpy_resize = vga_save_dpy_resize;
|
|
ds->dpy_refresh = vga_save_dpy_refresh;
|
|
ds->depth = 32;
|
|
|
|
s->ds = ds;
|
|
s->graphic_mode = -1;
|
|
vga_update_display(s);
|
|
|
|
if (ds->data) {
|
|
ppm_save(filename, ds->data, vga_save_w, vga_save_h,
|
|
s->ds->linesize);
|
|
qemu_free(ds->data);
|
|
}
|
|
s->ds = saved_ds;
|
|
}
|