diff options
Diffstat (limited to 'gdb/gdbserver/remote-server.c')
| -rw-r--r-- | gdb/gdbserver/remote-server.c | 151 |
1 files changed, 151 insertions, 0 deletions
diff --git a/gdb/gdbserver/remote-server.c b/gdb/gdbserver/remote-server.c new file mode 100644 index 0000000..6a53390 --- /dev/null +++ b/gdb/gdbserver/remote-server.c @@ -0,0 +1,151 @@ +/* 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); +} |