d4e7039177
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 :-).
278 lines
7.1 KiB
C
278 lines
7.1 KiB
C
/*
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* Copyright (c) 1992, 1993, 1996
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* Berkeley Software Design, Inc. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by Berkeley Software
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* Design, Inc.
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*
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* THIS SOFTWARE IS PROVIDED BY Berkeley Software Design, Inc. ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL Berkeley Software Design, Inc. BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* BSDI int10.c,v 2.3 1996/04/08 19:32:40 bostic Exp
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*
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* $FreeBSD$
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*/
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#include "doscmd.h"
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#include "mouse.h"
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/*
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* 0040:0060 contains the start and end of the cursor
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*/
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#define curs_end BIOSDATA[0x60]
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#define curs_start BIOSDATA[0x61]
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void
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int10(REGISTERS)
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{
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char *addr;
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int i, j;
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int saved_row, saved_col;
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/*
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* Any call to the video BIOS is enough to reset the poll
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* count on the keyboard.
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*/
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reset_poll();
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switch (R_AH) {
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case 0x00: /* Set display mode */
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debug(D_HALF, "Set video mode to %02x\n", R_AL);
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break;
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case 0x01: /* Define cursor */
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curs_start = R_CH;
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curs_end = R_CL;
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break;
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case 0x02: /* Position cursor */
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if (!xmode)
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goto unsupported;
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tty_move(R_DH, R_DL);
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break;
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case 0x03: /* Read cursor position */
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if (!xmode)
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goto unsupported;
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tty_report(&i, &j);
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R_DH = i;
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R_DL = j;
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R_CH = curs_start;
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R_CL = curs_end;
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break;
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case 0x05:
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debug(D_HALF, "Select current display page %d\n", R_AL);
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break;
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case 0x06: /* initialize window/scroll text upward */
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if (!xmode)
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goto unsupported;
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tty_scroll(R_CH, R_CL,
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R_DH, R_DL,
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R_AL, R_BH << 8);
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break;
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case 0x07: /* initialize window/scroll text downward */
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if (!xmode)
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goto unsupported;
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tty_rscroll(R_CH, R_CL,
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R_DH, R_DL,
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R_AL, R_BH << 8);
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break;
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case 0x08: /* read character/attribute */
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if (!xmode)
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goto unsupported;
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i = tty_char(-1, -1);
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R_AX = i;
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break;
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case 0x09: /* write character/attribute */
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if (!xmode)
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goto unsupported;
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tty_rwrite(R_CX, R_AL, R_BL << 8);
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break;
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case 0x0a: /* write character */
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if (!xmode)
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goto unsupported;
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tty_rwrite(R_CX, R_AL, -1);
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break;
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case 0x0b: /* set border color */
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if (!xmode)
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goto unsupported;
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video_setborder(R_BL);
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break;
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case 0x0e: /* write character */
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tty_write(R_AL, -1);
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break;
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case 0x0f: /* get display mode */
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R_AH = 80; /* number of columns */
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R_AL = 3; /* color */
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R_BH = 0; /* display page */
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break;
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case 0x10:
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switch (R_AL) {
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case 0x01:
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video_setborder(R_BH & 0x0f);
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break;
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case 0x02: /* Set pallete registers */
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debug(D_HALF, "INT 10 10:02 Set all palette registers\n");
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break;
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case 0x03: /* Enable/Disable blinking mode */
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video_blink(R_BL ? 1 : 0);
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break;
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case 0x13:
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debug(D_HALF,
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"INT 10 10:13 Select color or DAC (%02x, %02x)\n",
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R_BL, R_BH);
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break;
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case 0x1a: /* get video dac color-page state */
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R_BH = 0; /* Current page */
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R_BL = 0; /* four pages of 64... */
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break;
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default:
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unknown_int3(0x10, 0x10, R_AL, REGS);
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break;
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}
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break;
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#if 1
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case 0x11:
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switch (R_AL) {
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case 0x00: printf("Tried to load user defined font.\n"); break;
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case 0x01: printf("Tried to load 8x14 font.\n"); break;
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case 0x02: printf("Tried to load 8x8 font.\n"); break;
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case 0x03: printf("Tried to activate character set\n"); break;
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case 0x04: printf("Tried to load 8x16 font.\n"); break;
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case 0x10: printf("Tried to load and activate user defined font\n"); break;
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case 0x11: printf("Tried to load and activate 8x14 font.\n"); break;
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case 0x12: printf("Tried to load and activate 8x8 font.\n"); break;
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case 0x14: printf("Tried to load and activate 8x16 font.\n"); break;
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case 0x30:
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R_CX = 14;
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R_DL = 24;
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switch(R_BH) {
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case 0:
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PUTVEC(R_ES, R_BP, ivec[0x1f]);
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break;
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case 1:
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PUTVEC(R_ES, R_BP, ivec[0x43]);
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break;
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case 2:
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case 3:
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case 4:
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case 5:
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case 6:
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case 7:
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R_ES = 0;
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R_BP = 0;
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debug(D_HALF,
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"INT 10 11:30 Request font address %02x",
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R_BH);
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break;
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default:
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unknown_int4(0x10, 0x11, 0x30, R_BH, REGS);
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break;
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}
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break;
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default:
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unknown_int3(0x10, 0x11, R_AL, REGS);
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break;
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}
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break;
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#endif
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case 0x12: /* Load multiple DAC color register */
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if (!xmode)
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goto unsupported;
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switch (R_BL) {
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case 0x10: /* Read EGA/VGA config */
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R_BH = 0; /* Color */
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R_BL = 0; /* 64K */
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break;
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default:
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unknown_int3(0x10, 0x12, R_BL, REGS);
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break;
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}
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break;
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case 0x13: /* write character string */
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if (!xmode)
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goto unsupported;
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addr = (char *)MAKEPTR(R_ES, R_BP);
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switch (R_AL & 0x03) {
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case 0:
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tty_report(&saved_row, &saved_col);
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tty_move(R_DH, R_DL);
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for (i = 0; i < R_CX; ++i)
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tty_write(*addr++, R_BL << 8);
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tty_move(saved_row, saved_col);
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break;
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case 1:
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tty_move(R_DH, R_DL);
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for (i = 0; i < R_CX; ++i)
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tty_write(*addr++, R_BL << 8);
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break;
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case 2:
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tty_report(&saved_row, &saved_col);
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tty_move(R_DH, R_DL);
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for (i = 0; i < R_CX; ++i) {
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tty_write(addr[0], addr[1]);
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addr += 2;
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}
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tty_move(saved_row, saved_col);
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break;
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case 3:
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tty_move(R_DH, R_DL);
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for (i = 0; i < R_CX; ++i) {
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tty_write(addr[0], addr[1]);
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addr += 2;
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}
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break;
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}
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break;
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case 0x1a:
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if (!xmode)
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goto unsupported;
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R_AL = 0x1a; /* I am VGA */
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R_BL = 8; /* Color VGA */
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R_BH = 0; /* No other card */
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break;
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case 0x4f: /* get VESA information */
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R_AH = 0x01; /* no VESA support */
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break;
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case 0x1b: /* Functionality state information */
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case 0xef:
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case 0xfe: /* Get video buffer */
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break;
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case 0xfa: /* Interrogate mouse driver */
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if (xmode)
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PUTPTR(R_ES, R_BX, (long)mouse_area);
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break;
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case 0xff: /* Update real screen from video buffer */
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/* XXX - we should allow secondary buffer here and then
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update it as the user requests. */
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break;
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unsupported:
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if (vflag) dump_regs(REGS);
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fatal ("int10 function 0x%02x:%02x only available in X mode\n",
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R_AH, R_AL);
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unknown:
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default:
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unknown_int2(0x10, R_AH, REGS);
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break;
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}
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}
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