112 lines
2.7 KiB
C++
112 lines
2.7 KiB
C++
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/*
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* Copyright (c) 2001 Stephen Williams (steve@icarus.com)
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*
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* This source code is free software; you can redistribute it
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* and/or modify it in source code form under the terms of the GNU
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* General Public License as published by the Free Software
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* Foundation; either version 2 of the License, or (at your option)
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* any later version.
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*
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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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*
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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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
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*/
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#if !defined(WINNT)
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#ident "$Id: debug.cc,v 1.1 2001/05/05 23:55:46 steve Exp $"
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#endif
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/*
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* This file provides a simple command line debugger for the vvp
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* runtime. It is a means to interract with the user running the
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* simulation.
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*/
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# include "config.h"
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#if defined(WITH_DEBUG)
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# include "debug.h"
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# include "schedule.h"
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# include <stdio.h>
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# include <readline/readline.h>
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# include <readline/history.h>
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# include <string.h>
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# include <malloc.h>
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static bool interact_flag = false;
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static void cmd_go(unsigned, char*[])
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{
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interact_flag = false;
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}
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static void cmd_time(unsigned, char*[])
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{
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unsigned long ticks = schedule_simtime();
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printf("%lu ticks\n", ticks);
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}
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static void cmd_unknown(unsigned argc, char*argv[])
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{
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printf("Unknown command: %s\n", argv[0]);
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}
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struct {
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const char*name; void (*proc)(unsigned argc, char*argv[]);
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} cmd_table[] = {
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{ "go", &cmd_go},
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{ "time", &cmd_time},
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{ 0, &cmd_unknown}
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};
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void breakpoint(void)
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{
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printf("** VVP Interactive Debugger **\n");
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printf("Current simulation time is %lu ticks.\n", schedule_simtime());
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interact_flag = true;
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while (interact_flag) {
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char*input = readline("> ");
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unsigned argc = 0;
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char**argv = new char*[strlen(input)/2];
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for (char*cp = input+strspn(input, " ")
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; *cp; cp += strspn(cp, " ")) {
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argv[argc] = cp;
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cp += strcspn(cp, " ");
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if (*cp)
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*cp++ = 0;
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argc += 1;
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}
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if (argc > 0) {
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unsigned idx;
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for (idx = 0 ; cmd_table[idx].name ; idx += 1)
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if (strcmp(cmd_table[idx].name, argv[0]) == 0)
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break;
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cmd_table[idx].proc (argc, argv);
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}
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delete[] argv;
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free(input);
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}
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}
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#endif
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/*
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* $Log: debug.cc,v $
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* Revision 1.1 2001/05/05 23:55:46 steve
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* Add the beginnings of an interactive debugger.
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*
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*/
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