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/* Main code for remote server for GDB.
Copyright (C) 1989, 1993 Free Software Foundation, Inc.
This file is part of GDB.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
#include "defs.h"
#include <setjmp.h>
#include <signal.h>
void read_inferior_memory ();
unsigned char mywait ();
void myresume();
void initialize ();
int create_inferior ();
extern char registers[];
int inferior_pid;
extern char **environ;
/* Descriptor for I/O to remote machine. */
int remote_desc;
int kiodebug = 0;
int remote_debugging;
void remote_send ();
void putpkt ();
void getpkt ();
void remote_open ();
void write_ok ();
void write_enn ();
void convert_ascii_to_int ();
void convert_int_to_ascii ();
void prepare_resume_reply ();
void decode_m_packet ();
void decode_M_packet ();
jmp_buf toplevel;
main (argc, argv)
int argc;
char *argv[];
{
char ch, status, own_buf[2000], mem_buf[2000];
int i = 0;
unsigned char signal;
unsigned int mem_addr, len;
char argvec[1024];
if (setjmp(toplevel))
{
fprintf(stderr, "Exiting\n");
exit(1);
}
if (argc < 3)
error("Usage: gdbserver tty prog [args ...]");
initialize ();
remote_open (argv[1], 0);
argvec[0] = '\000';
for (i = 2; i < argc; i++)
strcat(argvec, argv[i]);
inferior_pid = create_inferior (argvec, environ);
fprintf (stderr, "Process %s created; pid = %d\n", argv[1], inferior_pid);
signal = mywait (&status); /* Wait till we are at 1st instr in shell */
if (status != 'S' || signal != SIGTRAP)
error ("Bad status from shell\n");
myresume (0, 0); /* Start up the shell */
signal = mywait (&status); /* Wait for program to start */
/* We are now stopped at the first instruction of the target process */
setjmp(toplevel);
do
{
getpkt (own_buf);
i = 0;
ch = own_buf[i++];
switch (ch)
{
case '?':
prepare_resume_reply (own_buf, status, signal);
break;
case 'g':
convert_int_to_ascii (registers, own_buf, REGISTER_BYTES);
break;
case 'G':
convert_ascii_to_int (&own_buf[1], registers, REGISTER_BYTES);
store_inferior_registers (-1);
write_ok (own_buf);
break;
case 'm':
decode_m_packet (&own_buf[1], &mem_addr, &len);
read_inferior_memory (mem_addr, mem_buf, len);
convert_int_to_ascii (mem_buf, own_buf, len);
break;
case 'M':
decode_M_packet (&own_buf[1], &mem_addr, &len, mem_buf);
if (write_inferior_memory (mem_addr, mem_buf, len) == 0)
write_ok (own_buf);
else
write_enn (own_buf);
break;
case 'c':
myresume (0, 0);
signal = mywait (&status);
prepare_resume_reply (own_buf, status, signal);
break;
case 's':
myresume (1, 0);
signal = mywait (&status);
prepare_resume_reply (own_buf, status, signal);
break;
case 'k':
kill_inferior ();
sprintf (own_buf, "q");
putpkt (own_buf);
fprintf (stderr, "Obtained kill request...terminating\n");
close (remote_desc);
exit (0);
default:
printf ("\nUnknown option chosen by master\n");
write_enn (own_buf);
break;
}
putpkt (own_buf);
}
while (1);
close (remote_desc);
/** now get out of here**/
fprintf (stderr, "Finished reading data from serial link - Bye!\n");
exit (0);
}
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