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freebsd/usr.bin/doscmd/int10.c
Marcel Moolenaar 535b692091 Unbreak doscmd after the sigset_t change: 
doscmd heavily depends on struct sigcontext which luckily is mostly passed
between functions as usion regcontext_t. By redefining union regcontext_t in
terms of mcontext_t almost all bases are covered.

It also seems to me that doscmd was in a transitional state. The redundant
definitions made it difficult to get a clear overview and could easily cause
oversight. To make sure my changes were ok, I went as far as to complete the
transition. It was not exactly necessary, but I expect to have to come back
here some more ("whistle" if I'm wrong :-).
1999-09-29 20:09:19 +00:00

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/*
* Copyright (c) 1992, 1993, 1996
* Berkeley Software Design, Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Berkeley Software
* Design, Inc.
*
* THIS SOFTWARE IS PROVIDED BY Berkeley Software Design, Inc. ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL Berkeley Software Design, Inc. BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* BSDI int10.c,v 2.3 1996/04/08 19:32:40 bostic Exp
*
* $FreeBSD$
*/
#include "doscmd.h"
#include "mouse.h"
/*
* 0040:0060 contains the start and end of the cursor
*/
#define curs_end BIOSDATA[0x60]
#define curs_start BIOSDATA[0x61]
void
int10(REGISTERS)
{
char *addr;
int i, j;
int saved_row, saved_col;
/*
* Any call to the video BIOS is enough to reset the poll
* count on the keyboard.
*/
reset_poll();
switch (R_AH) {
case 0x00: /* Set display mode */
debug(D_HALF, "Set video mode to %02x\n", R_AL);
break;
case 0x01: /* Define cursor */
curs_start = R_CH;
curs_end = R_CL;
break;
case 0x02: /* Position cursor */
if (!xmode)
goto unsupported;
tty_move(R_DH, R_DL);
break;
case 0x03: /* Read cursor position */
if (!xmode)
goto unsupported;
tty_report(&i, &j);
R_DH = i;
R_DL = j;
R_CH = curs_start;
R_CL = curs_end;
break;
case 0x05:
debug(D_HALF, "Select current display page %d\n", R_AL);
break;
case 0x06: /* initialize window/scroll text upward */
if (!xmode)
goto unsupported;
tty_scroll(R_CH, R_CL,
R_DH, R_DL,
R_AL, R_BH << 8);
break;
case 0x07: /* initialize window/scroll text downward */
if (!xmode)
goto unsupported;
tty_rscroll(R_CH, R_CL,
R_DH, R_DL,
R_AL, R_BH << 8);
break;
case 0x08: /* read character/attribute */
if (!xmode)
goto unsupported;
i = tty_char(-1, -1);
R_AX = i;
break;
case 0x09: /* write character/attribute */
if (!xmode)
goto unsupported;
tty_rwrite(R_CX, R_AL, R_BL << 8);
break;
case 0x0a: /* write character */
if (!xmode)
goto unsupported;
tty_rwrite(R_CX, R_AL, -1);
break;
case 0x0b: /* set border color */
if (!xmode)
goto unsupported;
video_setborder(R_BL);
break;
case 0x0e: /* write character */
tty_write(R_AL, -1);
break;
case 0x0f: /* get display mode */
R_AH = 80; /* number of columns */
R_AL = 3; /* color */
R_BH = 0; /* display page */
break;
case 0x10:
switch (R_AL) {
case 0x01:
video_setborder(R_BH & 0x0f);
break;
case 0x02: /* Set pallete registers */
debug(D_HALF, "INT 10 10:02 Set all palette registers\n");
break;
case 0x03: /* Enable/Disable blinking mode */
video_blink(R_BL ? 1 : 0);
break;
case 0x13:
debug(D_HALF,
"INT 10 10:13 Select color or DAC (%02x, %02x)\n",
R_BL, R_BH);
break;
case 0x1a: /* get video dac color-page state */
R_BH = 0; /* Current page */
R_BL = 0; /* four pages of 64... */
break;
default:
unknown_int3(0x10, 0x10, R_AL, REGS);
break;
}
break;
#if 1
case 0x11:
switch (R_AL) {
case 0x00: printf("Tried to load user defined font.\n"); break;
case 0x01: printf("Tried to load 8x14 font.\n"); break;
case 0x02: printf("Tried to load 8x8 font.\n"); break;
case 0x03: printf("Tried to activate character set\n"); break;
case 0x04: printf("Tried to load 8x16 font.\n"); break;
case 0x10: printf("Tried to load and activate user defined font\n"); break;
case 0x11: printf("Tried to load and activate 8x14 font.\n"); break;
case 0x12: printf("Tried to load and activate 8x8 font.\n"); break;
case 0x14: printf("Tried to load and activate 8x16 font.\n"); break;
case 0x30:
R_CX = 14;
R_DL = 24;
switch(R_BH) {
case 0:
PUTVEC(R_ES, R_BP, ivec[0x1f]);
break;
case 1:
PUTVEC(R_ES, R_BP, ivec[0x43]);
break;
case 2:
case 3:
case 4:
case 5:
case 6:
case 7:
R_ES = 0;
R_BP = 0;
debug(D_HALF,
"INT 10 11:30 Request font address %02x",
R_BH);
break;
default:
unknown_int4(0x10, 0x11, 0x30, R_BH, REGS);
break;
}
break;
default:
unknown_int3(0x10, 0x11, R_AL, REGS);
break;
}
break;
#endif
case 0x12: /* Load multiple DAC color register */
if (!xmode)
goto unsupported;
switch (R_BL) {
case 0x10: /* Read EGA/VGA config */
R_BH = 0; /* Color */
R_BL = 0; /* 64K */
break;
default:
unknown_int3(0x10, 0x12, R_BL, REGS);
break;
}
break;
case 0x13: /* write character string */
if (!xmode)
goto unsupported;
addr = (char *)MAKEPTR(R_ES, R_BP);
switch (R_AL & 0x03) {
case 0:
tty_report(&saved_row, &saved_col);
tty_move(R_DH, R_DL);
for (i = 0; i < R_CX; ++i)
tty_write(*addr++, R_BL << 8);
tty_move(saved_row, saved_col);
break;
case 1:
tty_move(R_DH, R_DL);
for (i = 0; i < R_CX; ++i)
tty_write(*addr++, R_BL << 8);
break;
case 2:
tty_report(&saved_row, &saved_col);
tty_move(R_DH, R_DL);
for (i = 0; i < R_CX; ++i) {
tty_write(addr[0], addr[1]);
addr += 2;
}
tty_move(saved_row, saved_col);
break;
case 3:
tty_move(R_DH, R_DL);
for (i = 0; i < R_CX; ++i) {
tty_write(addr[0], addr[1]);
addr += 2;
}
break;
}
break;
case 0x1a:
if (!xmode)
goto unsupported;
R_AL = 0x1a; /* I am VGA */
R_BL = 8; /* Color VGA */
R_BH = 0; /* No other card */
break;
case 0x4f: /* get VESA information */
R_AH = 0x01; /* no VESA support */
break;
case 0x1b: /* Functionality state information */
case 0xef:
case 0xfe: /* Get video buffer */
break;
case 0xfa: /* Interrogate mouse driver */
if (xmode)
PUTPTR(R_ES, R_BX, (long)mouse_area);
break;
case 0xff: /* Update real screen from video buffer */
/* XXX - we should allow secondary buffer here and then
update it as the user requests. */
break;
unsupported:
if (vflag) dump_regs(REGS);
fatal ("int10 function 0x%02x:%02x only available in X mode\n",
R_AH, R_AL);
unknown:
default:
unknown_int2(0x10, R_AH, REGS);
break;
}
}
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