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- /* This is file CONTROL.C */
- /*
- ** Copyright (C) 1991 DJ Delorie, 24 Kirsten Ave, Rochester NH 03867-2954
- **
- ** This file is distributed under the terms listed in the document
- ** "copying.dj", available from DJ Delorie at the address above.
- ** A copy of "copying.dj" should accompany this file; if not, a copy
- ** should be available from where this file was obtained. This file
- ** may not be distributed without a verbatim copy of "copying.dj".
- **
- ** This file is distributed WITHOUT ANY WARRANTY; without even the implied
- ** warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
- */
-
- /* Modified for VCPI Implement by Y.Shibata Aug 5th 1991 */
- /* History:87,1 */
- #include <dos.h>
- #include <dir.h>
- #include <stdlib.h>
- #include <stdio.h>
- #include <fcntl.h>
- #include <sys/stat.h>
- #include <string.h>
- #include <ctype.h>
-
- #include "build.h"
- #include "types.h"
- #include "gdt.h"
- #include "idt.h"
- #include "tss.h"
- #include "valloc.h"
- #include "utils.h"
- #include "syms.h"
- #include "graphics.h"
- #include "mono.h"
- #include "vcpi.h"
-
- TSS *tss_ptr;
- int debug_mode = 0;
- int self_contained;
- long header_offset = 0;
- int use_ansi=0;
- int use_mono=0;
- int redir_1_mono=0;
- int redir_2_mono=0;
- int redir_2_1=0;
- int redir_1_2=0;
-
- static int old_video_mode;
- static int globbing=1;
-
- int16 ems_handle=0; /* Get EMS Handle */
- word16 vcpi_installed = 0; /* VCPI Installed Flag */
-
- extern near go32();
- extern near go_real_mode();
- extern void vcpi_flush(); /* VCPI Memory All Cleared */
-
- extern int was_exception;
- extern near ivec0(), ivec1(), ivec7(), ivec75();
- extern near interrupt_common(), page_fault();
- extern near v74_handler(), v78_handler(), v79_handler();
-
- extern short new_pic;
- extern word32 far *pd;
-
- short _openfd[255] = {
- 0x2001,0x2002,0x2002,0xa004,0xa002,0xffff,0xffff,0xffff,
- 0xffff,0xffff,0xffff,0xffff,0xffff,0xffff,0xffff,0xffff,
- 0xffff,0xffff,0xffff,0xffff,0xffff,0xffff,0xffff,0xffff,
- 0xffff,0xffff,0xffff,0xffff,0xffff,0xffff,0xffff,0xffff,
- 0xffff,0xffff,0xffff,0xffff,0xffff,0xffff,0xffff,0xffff,
- 0xffff,0xffff,0xffff,0xffff,0xffff,0xffff,0xffff,0xffff,
- 0xffff,0xffff,0xffff,0xffff,0xffff,0xffff,0xffff,0xffff,
- 0xffff,0xffff,0xffff,0xffff,0xffff,0xffff,0xffff,0xffff,
- 0xffff,0xffff,0xffff,0xffff,0xffff,0xffff,0xffff,0xffff,
- 0xffff,0xffff,0xffff,0xffff,0xffff,0xffff,0xffff,0xffff,
- 0xffff,0xffff,0xffff,0xffff,0xffff,0xffff,0xffff,0xffff,
- 0xffff,0xffff,0xffff,0xffff,0xffff,0xffff,0xffff,0xffff,
- 0xffff,0xffff,0xffff,0xffff,0xffff,0xffff,0xffff,0xffff,
- 0xffff,0xffff,0xffff,0xffff,0xffff,0xffff,0xffff,0xffff,
- 0xffff,0xffff,0xffff,0xffff,0xffff,0xffff,0xffff,0xffff,
- 0xffff,0xffff,0xffff,0xffff,0xffff,0xffff,0xffff,0xffff,
- 0xffff,0xffff,0xffff,0xffff,0xffff,0xffff,0xffff,0xffff,
- 0xffff,0xffff,0xffff,0xffff,0xffff,0xffff,0xffff,0xffff,
- 0xffff,0xffff,0xffff,0xffff,0xffff,0xffff,0xffff,0xffff,
- 0xffff,0xffff,0xffff,0xffff,0xffff,0xffff,0xffff,0xffff,
- 0xffff,0xffff,0xffff,0xffff,0xffff,0xffff,0xffff,0xffff,
- 0xffff,0xffff,0xffff,0xffff,0xffff,0xffff,0xffff,0xffff,
- 0xffff,0xffff,0xffff,0xffff,0xffff,0xffff,0xffff,0xffff,
- 0xffff,0xffff,0xffff,0xffff,0xffff,0xffff,0xffff,0xffff,
- 0xffff,0xffff,0xffff,0xffff,0xffff,0xffff,0xffff,0xffff,
- 0xffff,0xffff,0xffff,0xffff,0xffff,0xffff,0xffff,0xffff,
- 0xffff,0xffff,0xffff,0xffff,0xffff,0xffff,0xffff,0xffff,
- 0xffff,0xffff,0xffff,0xffff,0xffff,0xffff,0xffff,0xffff,
- 0xffff,0xffff,0xffff,0xffff,0xffff,0xffff,0xffff,0xffff,
- 0xffff,0xffff,0xffff,0xffff,0xffff,0xffff,0xffff,0xffff,
- 0xffff,0xffff,0xffff,0xffff,0xffff,0xffff,0xffff,0xffff,
- 0xffff,0xffff,0xffff,0xffff,0xffff,0xffff,0xffff
- };
-
- bump_file_limit()
- {
- if (((((int)_osmajor)<<8)|_osminor) < 0x0303)
- return;
- _AH = 0x67;
- _BX = 255;
- geninterrupt(0x21);
- }
-
- initialize_printer()
- {
- _BX=4;
- _AH=0x44;
- _AL=0x01;
- _DX=0xa0;
- geninterrupt(0x21);
- setmode(4, O_BINARY);
- }
-
- fillgdt(int sel, word32 limit, word32 base, word8 type, int G)
- {
- GDT_S *g;
- g = gdt+sel;
- if (G & 2)
- limit = limit >> 12;
- g->lim0 = limit & 0xffff;
- g->lim1 = (limit>>16) & 0x0f;
- g->base0 = base & 0xffff;
- g->base1 = (base>>16) & 0xff;
- g->base2 = (base>>24) & 0xff;
- g->stype = type;
- g->lim1 |= G * 0x40;
- }
-
- word32 ptr2linear(void far *ptr)
- {
- return (word32)FP_SEG(ptr) * 16L + (word32)FP_OFF(ptr);
- }
-
- setup_tss(TSS *t, int (*eip)())
- {
- memset(t, 0, sizeof(TSS));
- t->tss_cs = g_rcode*8;
- t->tss_eip = (long)FP_OFF(eip);
- t->tss_ss = g_rdata*8;
- t->tss_esp = (long)FP_OFF(t->tss_stack);
- t->tss_ds = g_rdata*8;
- t->tss_es = g_rdata*8;
- t->tss_fs = g_rdata*8;
- t->tss_gs = g_rdata*8;
- t->tss_eflags = 0x0200;
- t->tss_iomap = 0xffff; /* no map */
- }
-
- exit_func()
- {
- int i;
- dalloc_uninit();
- uninit_controllers();
- xms_free();
- if ((ems_handle)&&(ems_handle != -1))
- ems_free(ems_handle); /* Deallocated EMS Page */
- if (vcpi_installed)
- vcpi_flush(); /* Deallocated VCPI Pages */
-
- #if TOPLINEINFO
- for (i=0; i<80; i++)
- poke(screen_seg, i*2, 0x0720);
- #endif
- }
-
- int ctrl_c_flag = 0;
-
- ctrlbrk_func()
- {
- #if DEBUGGER
- ctrl_c_flag = 1;
- #else
- exit(3);
- #endif
- }
-
- usage(char *s)
- {
- printf("Usage: %s [program [options . . . ]]\n", s);
- _exit(1);
- }
-
- int have_80387;
- int use_xms=0;
- static word32 push32(void *ptr, int len);
-
- setup_idt_task(int which, int tss)
- {
- idt[which].selector = tss*8;
- idt[which].stype = 0x8500;
- idt[which].offset0 = 0;
- idt[which].offset1 = 0;
- }
-
- main(int argc, char **argv, char **envp)
- {
- int i, n, set_brk=0, emu_installed=0;
- struct stat stbuf;
- char *cp, *path, *argv0, *emu_fn=0;
- unsigned short header[3];
-
- bump_file_limit();
-
- if (xms_installed())
- use_xms = 1;
- old_video_mode = peekb(0x40, 0x49);
-
- if (strcmp(argv[1], "!proxy") == 0)
- {
- int oseg, optr, i;
- int far *oargv;
- char far *oargve;
- sscanf(argv[2], "%x", &argc);
- sscanf(argv[3], "%x", &oseg);
- sscanf(argv[4], "%x", &optr);
- oargv = MK_FP(oseg, optr);
- argv = (char **)malloc(sizeof(char *) * (argc+1));
- for (i=0; i<argc+1; i++)
- {
- if (oargv[i] == 0)
- {
- argv[i] = 0;
- break;
- }
- oargve = MK_FP(oseg, oargv[i]);
- for (optr=0; oargve[optr]; optr++);
- argv[i] = (char *)malloc(optr+1);
- for (optr=0; oargve[optr]; optr++)
- argv[i][optr] = oargve[optr];
- argv[i][optr] = 0;
- }
- }
-
- ems_handle = emm_present();
- switch (cputype())
- {
- case 1:
- if ((ems_handle)&&(ems_handle != -1))
- ems_free(ems_handle);
- fprintf(stderr, "CPU must be a 386 to run this program.\n");
- exit(1);
- case 2:
- if (ems_handle)
- {
- if (vcpi_installed = vcpi_present())
- break;
- else if (ems_handle != -1)
- ems_free(ems_handle);
- }
- fprintf(stderr, "CPU must be in REAL mode (not V86 mode) to run this program.\n");
- exit(1);
- }
-
- if (peekb(0x40,0x49) == 7)
- screen_seg = 0xb000;
-
- _fmode = O_BINARY;
-
- cp = getenv("GO32");
- path = 0;
- if (cp)
- while (1)
- {
- char sw[100];
- char val[100];
- if (sscanf(cp, "%s%n", sw, &i) < 1)
- break;
- cp += i;
- if (stricmp(sw, "ansi") == 0)
- use_ansi = 1;
- else if (stricmp(sw, "mono") == 0)
- use_mono = 1;
- else if (stricmp(sw, "2r1") == 0)
- redir_2_1 = 1;
- else if (stricmp(sw, "1r2") == 0)
- redir_1_2 = 1;
- else if (stricmp(sw, "2rm") == 0)
- redir_2_mono = 1;
- else if (stricmp(sw, "1rm") == 0)
- redir_1_mono = 1;
- else if (stricmp(sw, "glob") == 0)
- globbing = 1;
- else if (stricmp(sw, "noglob") == 0)
- globbing = 0;
- else
- {
- val[0] = 0;
- sscanf(cp, "%s%n", val, &i);
- cp += i;
- if (val[0] == 0)
- break;
- }
- if (stricmp(sw, "driver") == 0)
- {
- if (path) free(path);
- path = strdup(val);
- }
- else if (stricmp(sw, "tw") == 0)
- gr_def_tw = atoi(val);
- else if (stricmp(sw, "th") == 0)
- gr_def_th = atoi(val);
- else if (stricmp(sw, "gw") == 0)
- gr_def_gw = atoi(val);
- else if (stricmp(sw, "gh") == 0)
- gr_def_gh = atoi(val);
- #ifndef NONEWDRIVER
- else if (stricmp(sw, "nc") == 0)
- gr_def_numcolor = atoi(val);
- #endif
- else if (stricmp(sw, "emu") == 0)
- {
- if (emu_fn) free(emu_fn);
- emu_fn = strdup(val);
- }
- }
- #if ! DEBUGGER
- #if ! TOPLINEINFO
- use_mono = 0;
- #endif
- #endif
- setup_graphics_driver(path);
- if (path) free(path);
- if (use_mono)
- {
- use_ansi = 0;
- screen_seg = 0xb000;
- }
-
- setbuf(stdin, 0);
- atexit((atexit_t)exit_func);
- ctrlbrk(ctrlbrk_func);
- n = (int)ivec1-(int)ivec0;
- for (i=0; i<256; i++)
- {
- idt[i].selector = g_rcode*8;
- idt[i].stype = 0x8e00;
- idt[i].offset0 = FP_OFF((int)ivec0+n*i);
- idt[i].offset1 = 0;
- }
- setup_idt_task(14, g_ptss);
-
- cp = getenv("387");
- if (cp)
- if (tolower(cp[0]) == 'n')
- have_80387 = 0;
- else if (tolower(cp[0]) == 'y')
- have_80387 = 1;
- else
- have_80387 = detect_80387();
- else
- have_80387 = detect_80387();
- if (have_80387)
- {
- idt[7].offset0 = (int)ivec7;
- idt[7].offset1 = 0;
- idt[0x75].offset0 = (int)ivec75;
- idt[0x75].offset1 = 0;
- }
-
- if (cp && (tolower(cp[0]) == 'q'))
- if (have_80387)
- printf("An 80387 has been detected.\n");
- else
- printf("No 80387 has been detected.\n");
-
- fillgdt(g_zero, 0, 0, 0, 0);
- fillgdt(g_gdt, sizeof(gdt), ptr2linear(gdt), 0x92, 0);
- fillgdt(g_idt, sizeof(idt), ptr2linear(idt), 0x92, 0);
- fillgdt(g_rcode, 0xffff, (word32)_CS*16L, 0x9a, 0);
- fillgdt(g_rdata, 0xffff, (word32)_DS*16L, 0x92, 0);
- fillgdt(g_core, 0xffffffffL, 0, 0x92, 3);
- fillgdt(g_acode, 0xefffffffL, 0x10000000L, 0x9a, 3);
- fillgdt(g_adata, 0xefffffffL, 0x10000000L, 0x92, 3);
- fillgdt(g_ctss, sizeof(TSS), ptr2linear(&c_tss), 0x89, 3);
- fillgdt(g_atss, sizeof(TSS), ptr2linear(&a_tss), 0x89, 3);
- fillgdt(g_ptss, sizeof(TSS), ptr2linear(&p_tss), 0x89, 3);
- fillgdt(g_itss, sizeof(TSS), ptr2linear(&i_tss), 0x89, 3);
- fillgdt(g_rc32, 0xffff, (word32)_CS*16L, 0x9a, 3);
- fillgdt(g_grdr, 0xffff, (word32)gr_paging_segment*16L, 0x9a, 0);
- fillgdt(g_v74, sizeof(TSS), ptr2linear(&v74_tss), 0x89, 3);
- fillgdt(g_v78, sizeof(TSS), ptr2linear(&v78_tss), 0x89, 3);
- fillgdt(g_v79, sizeof(TSS), ptr2linear(&v79_tss), 0x89, 3);
-
- setup_tss(&c_tss, go_real_mode);
- setup_tss(&a_tss, go_real_mode);
- setup_tss(&o_tss, go_real_mode);
- setup_tss(&f_tss, go_real_mode);
- setup_tss(&i_tss, interrupt_common);
- setup_tss(&p_tss, page_fault);
- setup_tss(&v74_tss, v74_handler);
- setup_tss(&v78_tss, v78_handler);
- setup_tss(&v79_tss, v79_handler);
- tss_ptr = &a_tss;
-
- argv0 = argv[0];
- for (i=0; argv0[i]; i++)
- {
- if (argv0[i] == '\\')
- argv0[i] = '/';
- argv0[i] = tolower(argv0[i]);
- }
- if (strcmp(argv[1], "-nobrk") == 0)
- { /* for backwards compatibility only - DO NOT USE */
- set_brk=1;
- argv++;
- argc--;
- }
-
- #if TOPLINEINFO
- for (i=0; i<80; i++)
- poke(screen_seg, i*2, 0x0720);
- #endif
-
- self_contained = 0;
- n = open(argv0, O_RDONLY|O_BINARY);
- header[0] = 0;
- read(n, header, sizeof(header));
- if (header[0] == 0x5a4d)
- {
- header_offset = (long)header[1] + (long)header[2]*512L - 512L;
- lseek(n, header_offset, 0);
- header[0] = 0;
- read(n, header, sizeof(header));
- if (header[0] == 0x010b)
- self_contained = 1;
- }
- close(n);
-
- if (self_contained)
- {
- #if DEBUGGER
- debug_mode = 1;
- #else
- debug_mode = 0;
- #endif
- paging_set_file(argv0);
- emu_installed = emu_install(emu_fn);
- set_command_line(argv, envp);
- #if DEBUGGER
- syms_init(argv0);
- #endif
- }
- else
- {
- header_offset = 0;
- for (cp=argv0; *cp; cp++)
- if (*cp == '.')
- path = cp;
- *path = 0;
- if (stat(argv0, &stbuf)) /* not found */
- {
- fprintf(stderr, "%s.exe version 1.06 Copyright (C) 1991 DJ Delorie\n",
- argv0);
- debug_mode = 1;
- if (argv[1] == 0)
- usage(argv0);
- paging_set_file(argv[1]);
- emu_installed = emu_install(emu_fn);
- set_command_line(argv+1, envp);
- #if DEBUGGER
- syms_init(argv[1]);
- #endif
- }
- else /* found */
- {
- debug_mode = 0;
- paging_set_file(argv0);
- emu_installed = emu_install(emu_fn);
- set_command_line(argv, envp);
- #if DEBUGGER
- syms_init(argv0);
- #endif
- }
- }
-
- if (set_brk)
- paging_brk(0x8fffffffL);
-
- dalloc_init();
- init_controllers();
-
- setup_idt_task(0x74, g_v74);
- setup_idt_task(new_pic, g_v78);
- setup_idt_task(new_pic+1, g_v79);
-
- if (emu_installed)
- {
- push32(&(a_tss.tss_eip), 4);
- a_tss.tss_eip = 0xb0000020;
- }
- #if DEBUGGER
- debugger();
- if (peekb(0x40, 0x49) != old_video_mode)
- {
- _AX = old_video_mode;
- geninterrupt(0x10);
- }
- return 0;
- #else
- go_til_stop();
- if (tss_ptr->tss_irqn == 0x79)
- fprintf(stderr, "Ctrl-C Hit! Stopped at address %lx\n", tss_ptr->tss_eip);
- else
- fprintf(stderr, "Exception %d at eip=%lx\n", tss_ptr->tss_irqn, tss_ptr->tss_eip);
- return 1;
- #endif
- }
-
- #if !DEBUGGER
- gdtprint(i)
- {
- printf("0x%02x: base=%02x%02x%04x lim=%02x%04x G=%d type=%02x\n",
- i*8, gdt[i].base2, gdt[i].base1, gdt[i].base0,
- gdt[i].lim1&0x0f, gdt[i].lim0, gdt[i].lim1>>6, gdt[i].stype);
- }
- #endif
-
- static word32 push32(void *ptr, int len)
- {
- if ((a_tss.tss_esp & ~0xFFF) != ((a_tss.tss_esp-len) & ~0xFFF))
- {
- a_tss.tss_cr2 = a_tss.tss_esp - len + ARENA;
- page_in();
- }
- a_tss.tss_esp -= len;
- a_tss.tss_esp = a_tss.tss_esp & (~3);
- memput(a_tss.tss_esp+ARENA, ptr, len);
- return a_tss.tss_esp;
- }
-
- static int fscan_q(FILE *f, char *buf)
- {
- char *ibuf = buf;
- int c, quote=-1, gotsome=0, addquote=0;
- while ((c = fgetc(f)) != EOF)
- {
- if (c == '\\')
- {
- char c2 = fgetc(f);
- if (! strchr("\"'`\\ \t\n\r", c2))
- *buf++ = c;
- *buf++ = c2;
- addquote = 0;
- }
- else if (c == quote)
- {
- quote = -1;
- if (c == '\'')
- addquote = 1;
- }
- else if (isspace(c) && (quote==-1))
- {
- if (gotsome)
- {
- if (addquote)
- *buf++ = '\'';
- *buf = 0;
- return 1;
- }
- addquote = 0;
- }
- else
- {
- if ((quote == -1) && ((c == '"') || (c == '\'')))
- {
- quote = c;
- gotsome=1;
- if ((c == '\'') && (buf == ibuf))
- *buf++ = c;
- }
- else
- {
- *buf++ = c;
- gotsome=1;
- }
- addquote = 0;
- }
- }
- return 0;
- }
-
- static glob(char *buf, int (*func)())
- {
- if (globbing && strpbrk(buf, "*?"))
- {
- char *dire, *cp;
- struct ffblk ff;
- int done, upcase=0;
- done = findfirst(buf, &ff, FA_RDONLY|FA_DIREC|FA_ARCH);
- if (done)
- func(buf);
- else
- {
- char nbuf[80];
- strcpy(nbuf, buf);
- for (dire=cp=nbuf; *cp; cp++)
- {
- if (strchr("/\\:", *cp))
- dire = cp + 1;
- if (isupper(*cp))
- upcase = 1;
- }
- while (!done)
- {
- strcpy(dire, ff.ff_name);
- if (!upcase)
- strlwr(dire);
- func(nbuf);
- done = findnext(&ff);
- }
- }
- }
- else
- func(buf);
- }
-
- static foreach_arg(char **argv, int (*func)())
- {
- int i;
- char firstc;
- FILE *f;
- char buf[80];
- for (i=0; argv[i]; i++)
- {
- if (argv[i][0] == '@')
- {
- f = fopen(argv[i]+1, "rt");
- while (fscan_q(f, buf) == 1)
- {
- if (!strcmp(buf, "\032"))
- continue;
- glob(buf, func);
- }
- fclose(f);
- }
- else
- glob(argv[i], func);
- }
- }
-
- static int num_actual_args;
-
- static just_incr()
- {
- num_actual_args++;
- }
-
- static word32 *a;
-
- pusharg(char *ar)
- {
- int s = strlen(ar);
- if ((ar[0] == '\'') && (ar[s-1] == '\''))
- {
- ar[s-1] = '\0';
- ar++;
- }
- a[num_actual_args] = push32(ar, s+1);
- num_actual_args++;
- }
-
- set_command_line(char **argv, char **envv)
- {
- unsigned envc;
- word32 *e, v, argp, envp;
-
- a_tss.tss_cr2 = a_tss.tss_esp + ARENA;
- page_in();
-
- num_actual_args = 0;
- foreach_arg(argv, just_incr);
-
- for (envc=0; envv[envc]; envc++);
- e = (word32 *)malloc((envc+1)*sizeof(word32));
- if (e == 0)
- {
- printf("Fatal! no memory to copy environment\n");
- exit(1);
- }
- for (envc=0; envv[envc]; envc++)
- {
- v = push32(envv[envc], strlen(envv[envc])+1);
- e[envc] = v;
- }
- e[envc] = 0;
-
- a = (word32 *)malloc((num_actual_args+1)*sizeof(word32));
- if (a == 0)
- {
- printf("Fatal! no memory to copy arguments\n");
- exit(1);
- }
- num_actual_args = 0;
- foreach_arg(argv, pusharg);
- a[num_actual_args] = 0;
-
- envp = push32(e, (envc+1)*sizeof(word32));
- argp = push32(a, (num_actual_args+1)*sizeof(word32));
-
- push32(&envp, sizeof(word32));
- push32(&argp, sizeof(word32));
- v = num_actual_args;
- push32(&v, sizeof(word32));
- }
-