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#include "monitor.h"
#include "version.h"
char command_buf[256];
typedef int (*proc)();
int cmd_quit(), cmd_dump(), cmd_seg(), cmd_rel(), cmd_bzimage(), cmd_help();
int cmd_nop(), cmd_memdump(), cmd_set_base(), cmd_dir(), cmd_type(), cmd_more();
int cmd_regs(), cmd_monhelp();
void init_prog();
extern struct t_cmd_list {
char * command;
proc func;
} cmd_list[];
unsigned int current_address;
int number_base = 16;
main()
{
static char minibuf[2] = " ";
int ch, i;
char *cmd, *args, *ptr;
struct t_cmd_list * cptr;
#ifdef __STANDALONE__
printf("\r\n");
#endif
init_prog();
if (!x86_test)
{
#ifdef __STANDALONE__
#ifndef NOCOMMAND
#if 0
/* First out of the way. */
relocator(3);
/* Then align DS to 64k boundry -> DMA is simple. */
relocator(0x1000-__get_ds()+__get_cs());
#else
relocator(-1); /* Top of available memory */
#endif
printf("Relocated to CS=$%04x DS=$%04x\n", __get_cs(), __get_ds());
#endif
disk_drive = __argr.h.dl;
#endif
#ifdef NOCOMMAND
cmd_type("help.txt");
#else
display_help(0);
#endif
cmd_bzimage((void*)0);
}
#ifdef NOCOMMAND
printf("Unable to boot, sorry\nreboot:");
fflush(stdout);
read(0, command_buf, sizeof(command_buf)-1) ;
#else
for (;;)
{
#ifdef COLOUR
printf("\033S \033R+\033Sa\033Rc");
#endif
printf(">");
fflush(stdout);
ch = read(0, command_buf, sizeof(command_buf)-1) ;
if( ch <= 0 ) break;
command_buf[ch] = '\0';
if( ch == 1 && command_buf[0] != '\n' )
{
putchar('\n');
help_key(command_buf[0]&0xFF);
continue;
}
if( command_buf[ch-1] == '\n' ) command_buf[ch-1] = 0;
for(ptr=command_buf; *ptr; ptr++)
{
if(*ptr=='"') do { ptr++; } while(*ptr && *ptr != '"');
if( isupper(*ptr) ) *ptr = tolower(*ptr);
}
cmd = command_buf;
while(*cmd == ' ') cmd++;
if( !isalpha(cmd[0]) || !isalpha(cmd[1]) )
{
minibuf[0] = cmd[0];
args = cmd+1;
cmd = minibuf;
}
else
{
args = strchr(cmd, ' ');
if( args ) *args++ = 0;
else args = cmd + strlen(cmd);
}
if( *cmd == 0 ) continue;
for(cptr = cmd_list; cptr->command; cptr++)
{
if( strcmp(cptr->command, cmd) == 0 )
break;
}
#ifdef COLOUR
printf("\033S \033Sa\033Rg");
#endif
fflush(stdout);
if( cptr->command )
(void) (*cptr->func)(args);
else
printf("Command not found.\n");
}
#endif
}
/****************************************************************************/
void init_prog()
{
char offt;
#ifdef COLOUR
vt52_putch(0);
printf("\033E\033Rg\033Sa\033J");
#endif
printf("Linux x86");
#ifdef NOCOMMAND
#ifdef TARFLOPPY
printf(" TAR floppy booter");
#else
#ifdef DOSFLOPPY
printf(" DOS floppy booter");
#else
printf(" floppy booter");
#endif
#endif
#else
printf(" boot monitor");
#endif
printf(", Version %s", VERSION);
printf(".\n");
cpu_check();
mem_check();
#ifndef NOMONITOR
printf("Processor: %s", x86_name);
if(x86_fpu) printf(" with FPU");
if(x86_emu) printf(" in protected mode");
printf("\n");
#endif
printf("There is %u bytes available", &offt-sbrk(0));
printf(", %dk of boot memory", boot_mem_top/64);
if( main_mem_top )
{
printf(", %d.%dM of main memory",
(int)(main_mem_top/1024),
(int)((10*main_mem_top)/1024%10));
}
printf(".\n");
}
/****************************************************************************/
int
getnum(numptr, valptr)
char ** numptr;
unsigned int * valptr;
{
char * ptr = *numptr;
unsigned int val = 0;
int base = number_base;
int flg = 0;
while( *ptr && *ptr <= ' ' ) ptr++;
switch(*ptr)
{
case '$': case '&': case 'X':
base=16; ptr++; break;
case '#':
base=10; ptr++; break;
case '%':
base=2; ptr++; break;
case '0':
if( ptr[1] == 'X' ) { base=16; ptr+=2; }
break;
case '-':
*numptr = ptr+1;
return 0;
}
while(*ptr)
{
int d = -1, ch;
ch = *ptr;
if( ch >= '0' && ch <= '9' ) d = ch - '0';
if( ch >= 'a' && ch <= 'z' ) d = ch - 'a' + 10;
if( ch >= 'A' && ch <= 'Z' ) d = ch - 'A' + 10;
if( d>=0 && d<base )
{
val = val * base + d;
ptr++;
flg=1;
}
else
break;
}
if( flg )
{
*numptr = ptr;
if(valptr) *valptr = val;
else return val;
}
return flg;
}
/****************************************************************************/
#ifndef NOCOMMAND
struct t_cmd_list cmd_list[] =
{
{"zimage", cmd_bzimage}, /* Load and run 386 zimage file */
{"bzimage",cmd_bzimage}, /* Load and run 386 bzimage file */
{"=", cmd_bzimage}, /* Load and run 386 bzimage file */
{"exit", cmd_quit}, {"quit", cmd_quit}, {"q", cmd_quit},
{"#", cmd_nop},
{"help", cmd_help}, /* Display from help.txt */
{"dir", cmd_dir}, /* Display directory */
{"cat", cmd_type}, /* Cat/Type a file to the screen */
{"type", cmd_type}, /* Cat/Type a file to the screen */
{"more", cmd_more}, /* More a file to the screen */
#ifndef NOMONITOR
/* Debugger/monitor commands */
{"?", cmd_monhelp}, /* Display builtin help */
{"memdump",cmd_memdump}, {"mem",cmd_memdump}, {"m", cmd_memdump},
/* Display bytes */
{"seg", cmd_seg}, /* Set default segment */
{"rel", cmd_rel}, /* Relocate self */
{"base", cmd_set_base},
{"n", cmd_set_base},
{"init", init_prog},
{"regs", cmd_regs},
{"reg", cmd_regs},
{"r", cmd_regs},
/*
{"edit", cmd_edit}, Alter memory
{"move", cmd_move}, Move memory contents
{"load", cmd_load}, Load file of inode
{"stat", cmd_stat}, Stat info of inode
{"image", cmd_image}, Load and run 8086 image file
{"read", cmd_read}, Read sector
{"write", cmd_write}, Write sector
{"call", cmd_call}, load and run a bcc linux-8086 program.
*/
#endif
{0,0}
};
#endif
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