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|
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#ifdef _WIN32
#include <windows.h>
#include <conio.h>
#else
#include <sys/time.h>
#include <unistd.h>
#include <termios.h>
#include <signal.h>
#endif /* _WIN32 */
#include "cmdefs.h"
#include "main.h"
static int prompt_quit;
int UploadExec(const char *exefile);
#ifdef _WIN32
#define _kbhit kbhit
#else
struct termios orig_term;
void enable_raw_mode()
{
struct termios term;
tcgetattr(0, &orig_term);
term = orig_term;
term.c_lflag &= ~(ICANON | ECHO); // Disable echo as well
tcsetattr(0, TCSANOW, &term);
}
void disable_raw_mode()
{
tcsetattr(0, TCSANOW, &orig_term);
}
int _kbhit()
{
struct timeval tv = { 0L, 0L };
fd_set fds;
FD_ZERO(&fds);
FD_SET(0, &fds);
return select(1, &fds, NULL, NULL, &tv);
} /* _kbhit */
void term_func(int signum)
{
disable_raw_mode();
exit( 0 );
} /* term_func */
#endif /* _WIN32 */
static void promptHelp( void )
{
printf("? View help\n");
printf("up <addr> <len> <file> Upload memory from <file>\n");
printf("down <addr> <len> <file> Download memory to <file>\n");
printf("rv <8|16|32> <addr> Read a value from <addr>\n");
printf("wv <8|16|32> <addr> <val> Write a value to <addr>\n");
printf("sb <addr> <mode> [count] Set program breakpoint at <addr>\n");
printf("cb Clear all breakpoints\n");
printf("lb List breakpoints\n");
printf("sr <regname> <value> Set register value\n");
printf("stop Stop target\n");
printf("cont Resume target\n");
printf("stat Show target status\n");
printf("r / regs Show registers\n");
printf("t / trace Trace\n");
printf("rt / runto <addr> Run until <addr>\n");
printf("tt / traceto <addr> Run until <addr> or jump/branch\n");
printf("reboot Reboot target and quit\n");
printf("q / quit Quit\n\n");
printf("Commands can be stacked as one keystroke like so:\n");
printf("trace regs - Performs a trace operation then shows registers\n\n");
} /* promptHelp */
static char *getarg( const char *msg )
{
char *arg;
arg = strtok( NULL, " " );
if( !arg )
{
printf( "Missing %s argument.\n", msg );
return( NULL );
}
return( arg );
} /* getarg */
void promptMode( void )
{
int inkey;
int bytebuff;
char inbuff[100];
int inpos;
int inlen;
char *inptr;
char *arg;
unsigned int addr;
int len;
const char *file;
int wordsz;
unsigned int value;
int firsttime;
int pollcount;
int laststat;
int pollstat;
#ifdef _WIN32
#else
struct sigaction st;
#endif /* _WIN32 */
printf( "Enter ? for list of directives.\n\n" );
prompt_quit = 0;
#ifdef _WIN32
#else
st.sa_handler = term_func;
sigemptyset( &st.sa_mask );
st.sa_flags = SA_RESTART;
sigaction( SIGINT, &st, NULL );
enable_raw_mode();
#endif /* _WIN32 */
if( (laststat = dbGetStatusPoll()) < 0 )
{
printf("Error polling target status.\n");
laststat = 0;
}
while( !prompt_quit )
{
memset( inbuff, 0, 100 );
#if 1//def _WIN32
//gets( inbuff );
#else
fgets( inbuff, 100, stdin );
while( arg = strchr( inbuff, '\n' ) ) /* remove newlines from input */
{
*arg = 0;
}
#endif
printf("nDB>");
inpos = 0;
fflush(stdout);
firsttime = 1;
pollcount = 0;
while(1)
{
if( commPendingBytes() > 0 )
{
/* routine that simply flushes the serial interface */
bytebuff = commReadByte();
printf("\rReceived byte: %02x\n", bytebuff);
printf("nDB>%s", inbuff);
fflush(stdout);
pollcount = 0;
}
if( _kbhit() )
{
#ifdef _WIN32
inkey = getch();
if( inkey == 13 )
#else
inkey = getchar();
if( inkey == '\n' )
#endif
{
fputc('\n', stdout);
fflush(stdout);
break;
}
#ifdef _WIN32
else if( inkey == 8 )
#else
else if( inkey == 127 ) /* linux backspace */
#endif /* _WIN32 */
{
if( inpos > 0 )
{
fputc('\b', stdout);
fputc(' ', stdout);
fputc('\b', stdout);
fflush(stdout);
inpos--;
inbuff[inpos] = 0;
continue;
}
}
else
{
if( inpos < 100 )
{
fputc(inkey, stdout);
fflush(stdout);
inbuff[inpos] = inkey;
inpos++;
inbuff[inpos] = 0;
continue;
}
}
}
#ifdef _WIN32
Sleep(10);
#else
usleep(1000);
#endif /* _WIN32 */
pollcount++;
if( pollcount > 10 )
{
if( (pollstat = dbGetStatusPoll()) < 0 )
{
printf("Error polling target status.\n");
}
else
{
if( pollstat != laststat )
{
laststat = pollstat;
switch(pollstat)
{
case DB_STAT_STOP:
printf("\rTarget stopped.\n");
break;
case DB_STAT_BREAK:
printf("\rBreakpoint/trace complete.\n");
break;
case DB_STAT_EXCEPT:
printf("\rUnhandled exception.\n");
break;
default:
printf("\rUndefined target state (%d).\n", pollstat);
}
dbGetRegs();
printf("nDB>%s", inbuff);
fflush(stdout);
}
}
pollcount = 0;
}
}
if( ( inlen = strlen( inbuff ) ) == 0 )
continue;
inptr = inbuff;
while( arg = strtok( inptr, " " ) )
{
inptr = NULL;
/* quit parsing when end of string is reached */
if( strcasecmp( "?", arg ) == 0 )
{
promptHelp();
}
else if( strcasecmp( "rv", arg ) == 0 ) /* read value */
{
if( !(arg = getarg( "word size" ) ) ) /* get word size arg */
break;
sscanf( arg, "%d", &wordsz );
if( !(arg = getarg( "address" ) ) ) /* get address arg */
break;
sscanf( arg, "%x", &addr );
switch( wordsz )
{
case 8:
wordsz = 0;
break;
case 16:
wordsz = 1;
break;
case 32:
wordsz = 2;
break;
default:
printf( "Unknown word size: %d\n", wordsz );
wordsz = -1;
}
if( wordsz >= 0 )
{
value = dbReadValue( wordsz, addr );
switch( wordsz )
{
case 0:
printf( "%08X=%02X\n", addr, value );
break;
case 1:
printf( "%08X=%04X\n", addr, value );
break;
case 2:
printf( "%08X=%08X\n", addr, value );
break;
}
}
}
else if( strcasecmp( "wv", arg ) == 0 ) /* read value */
{
if( !(arg = getarg( "word size" ) ) ) /* get word size arg */
break;
sscanf( arg, "%d", &wordsz );
if( !(arg = getarg( "address" ) ) ) /* get address arg */
break;
sscanf( arg, "%x", &addr );
if( !(arg = getarg( "value" ) ) ) /* get value */
break;
sscanf( arg, "%x", &value );
switch( wordsz )
{
case 8:
wordsz = 0;
break;
case 16:
wordsz = 1;
break;
case 32:
wordsz = 2;
break;
default:
printf( "Unknown word size: %d\n", wordsz );
wordsz = -1;
}
dbWriteValue( wordsz, addr, value );
}
else if( strcasecmp( "exe", arg ) == 0 ) /* upload executable */
{
if( !(file = getarg( "file name" ) ) ) /* get file arg */
break;
UploadExec(file);
laststat = DB_STAT_STOP;
}
else if( strcasecmp( "up", arg ) == 0 ) /* upload memory */
{
if( !(arg = getarg( "address" ) ) ) /* get address arg */
break;
sscanf( arg, "%x", &addr );
if( !(arg = getarg( "length" ) ) ) /* get length arg */
break;
sscanf( arg, "%d", &len );
if( !(file = getarg( "file name" ) ) ) /* get file arg */
break;
printf( "Performing memory upload of %d byte(s) to %08X from %s\n",
len, addr, file );
dbUploadMemFile( addr, file, len );
}
else if( strcasecmp( "down", arg ) == 0 ) /* download memory */
{
if( !(arg = getarg( "address" ) ) ) /* get address arg */
break;
sscanf( arg, "%x", &addr );
if( !(arg = getarg( "length" ) ) ) /* get length arg */
break;
sscanf( arg, "%d", &len );
if( !(file = getarg( "file name" ) ) ) /* get file arg */
break;
printf( "Performing memory dump of %d byte(s) from %08X to %s\n",
len, addr, file );
dbGetMem( addr, len, file );
}
else if( strcasecmp("sb", arg) == 0 ) /* set breakpoint */
{
if( !(arg = getarg("address") ) ) /* get address arg */
break;
sscanf(arg, "%x", &addr);
if( !(arg = getarg("flag") ) ) /* get flag arg */
break;
sscanf(arg, "%d", &value);
if( value == 2 )
{
if( !(arg = getarg("count") ) ) /* get flag arg */
break;
sscanf(arg, "%d", &len);
}
else
{
len = 0;
}
dbSetBreak(addr, value, len);
}
else if( strcasecmp("cb", arg) == 0 ) /* clear breakpoints */
{
dbClearBreaks();
}
else if( strcasecmp("lb", arg) == 0 )
{
dbGetBreaks();
}
else if( strcasecmp( "stat", arg ) == 0 ) /* get target status */
{
dbGetStatus();
}
else if( strcasecmp( "stop", arg ) == 0 ) /* stop target */
{
dbSetExec( CMD_EXEC_STOP );
}
else if( strcasecmp( "cont", arg ) == 0 ) /* continue target */
{
dbSetExec( CMD_EXEC_RESUME );
laststat = DB_STAT_RUN;
}
else if( ( strcasecmp( "t", arg ) == 0 ) ||
( strcasecmp( "trace", arg ) == 0 ) )
{
dbSetExec( CMD_EXEC_STEP );
laststat = DB_STAT_RUN;
}
else if( ( strcasecmp( "rt", arg ) == 0 ) || /* runto address */
( strcasecmp( "runto", arg ) == 0 ) )
{
if( !(arg = getarg( "program address" ) ) ) /* get address arg */
break;
sscanf( arg, "%x", &addr );
dbRunTo(addr, 0);
laststat = DB_STAT_RUN;
}
else if( ( strcasecmp( "tt", arg ) == 0 ) || /* traceto address */
( strcasecmp( "traceto", arg ) == 0 ) )
{
if( !(arg = getarg( "program address" ) ) ) /* get address arg */
break;
sscanf( arg, "%x", &addr );
dbRunTo(addr, 1);
laststat = DB_STAT_RUN;
}
else if( ( strcasecmp( "r", arg ) == 0 ) || /* get registers */
( strcasecmp( "regs", arg ) == 0 ) )
{
dbGetRegs();
}
else if( strcasecmp("sr", arg) == 0 ) /* set register value */
{
if( !(arg = getarg("register") ) ) /* get address arg */
break;
file = arg;
if( !(arg = getarg("value") ) ) /* get flag arg */
break;
sscanf(arg, "%x", &value);
dbSetReg(file, value);
}
else if( strcasecmp( "reboot", arg ) == 0 )
{
dbReboot();
prompt_quit = 1;
break;
}
else if( ( strcasecmp( "q", arg ) == 0 ) || /* quit program */
( strcasecmp( "quit", arg ) == 0 ) )
{
prompt_quit = 1;
break;
}
else
{
printf( "Unknown directive: %s\n", arg );
}
/* delay before executing next directive */
#ifdef _WIN32
Sleep(100);
#else
usleep(1000);
#endif /* _WIN32 */
}
}
#ifdef _WIN32
#else
disable_raw_mode();
#endif /* _WIN32 */
} /* promptMode */
|
