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