mirror of
https://sourceware.org/git/binutils-gdb.git
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41e170e271
* gdbserver/remote-gutils.c: Remove lots of unused functions and variables. * gdbserver/remote-inflow.c: Remove lots of unused variables and #includes. Also, use PTRACE_* symbols instead of constants. (mywait): Surround calls to wait() with enable/disable_async_io() so that we can be interrupted from GDB while waiting for the child. Also, handle child exit more gracefully. * gdbserver/remote-server.c: Remove lots of unused variables. Move all extern defs into server.h. Redo main loop so that failure from getpkt() causes communications to be re-established. Fix 'k' command so that it restarts the child. * gdbserver/remote-utils.c: Remove lots of unloved vars and subrs. Move many extern decls into server.h. (remote_open): For tcp, seperate usage of proto fd from connected fd. Close proto fd after getting connection. (putpkt/getpkt): Pay attention to errors when reading/writing. Report these to the caller. New routines input_interrupt/enable_async_io/disable_async_io to make it possible to get an I/O interrupt when data arrives from the comm link. * serial.h: New file to contain common defs for all remote files.
116 lines
3.3 KiB
C
116 lines
3.3 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 "server.h"
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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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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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while (1)
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{
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remote_open (argv[1]);
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setjmp(toplevel);
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while (getpkt (own_buf) > 0)
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{
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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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fprintf (stderr, "Killing inferior\n");
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kill_inferior ();
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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],
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inferior_pid);
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signal = mywait (&status); /* Wait till we are at 1st instr in prog */
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break;
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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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/* We come here when getpkt fails. Close the connection, and re-open it
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at the top of the loop. */
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fprintf (stderr, "Remote side has terminated connection. GDBserver will reopen the connection.\n");
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remote_close ();
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}
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}
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