debug.c

这个是LINUX下的GDB调度工具的源码

/*  This file is part of the program psim.

    Copyright (C) 1994-1997, Andrew Cagney <[e-mail]>

    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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
 
    */


#ifndef _DEBUG_C_
#define _DEBUG_C_

#include "config.h"
#include "basics.h"

#ifdef HAVE_STDLIB_H
#include <stdlib.h>
#endif

int ppc_trace[nr_trace_options];

typedef struct _trace_option_descriptor {
  trace_options option;
  const char *name;
  const char *description;
} trace_option_descriptor;

static trace_option_descriptor trace_description[] = {
  { trace_gdb, "gdb", "calls made by gdb to the sim_calls.c file" },
  { trace_os_emul, "os-emul", "VEA mode sytem calls - like strace" },
  { trace_events, "events", "event queue handling" },
  /* decode/issue */
  { trace_semantics, "semantics", "Instruction execution (issue)" },
  { trace_idecode, "idecode", "instruction decode (when miss in icache)" },
  { trace_alu, "alu", "results of integer ALU" },
  { trace_vm, "vm", "OEA address translation" },
  { trace_load_store, "load-store", "transfers between registers and memory" },
  { trace_model, "model", "model specific information" },
  { trace_interrupts, "interrupts", "interrupt handling" },
  /* devices */
  { trace_device_tree, "device-tree",  },
  { trace_devices, "devices" },
  { trace_binary_device, "binary-device" },
  { trace_com_device, "com-device" },
  { trace_console_device, "console-device" },
  { trace_core_device, "core-device" },
  { trace_disk_device, "disk-device" },
  { trace_eeprom_device, "eeprom-device" },
  { trace_file_device, "file-device" },
  { trace_glue_device, "glue-device" },
  { trace_halt_device, "halt-device" },
  { trace_htab_device, "htab-device" },
  { trace_icu_device, "icu-device" },
  { trace_ide_device, "ide-device" },
  { trace_memory_device, "memory-device" },
  { trace_opic_device, "opic-device" },
  { trace_pal_device, "pal-device" },
  { trace_pass_device, "pass-device" },
  { trace_phb_device, "phb-device" },
  { trace_register_device, "register-device", "Device initializing registers" },
  { trace_stack_device, "stack-device" },
  { trace_vm_device, "vm-device" },
  /* packages */
  { trace_disklabel_package, "disklabel-package" },
  /* misc */
  { trace_print_info, "print-info", "Print performance analysis information" },
  { trace_opts, "options", "Print options simulator was compiled with" },
  /*{ trace_tbd, "tbd", "Trace any missing features" },*/
  { trace_print_device_tree, "print-device-tree", "Output the contents of the device tree" },
  { trace_dump_device_tree, "dump-device-tree", "Output the contents of the device tree then exit" },
  /* sentinal */
  { nr_trace_options, NULL },
};

extern void
trace_option(const char *option,
	     int setting)
{
  if (strcmp(option, "all") == 0) {
    trace_options i;
    for (i = 0; i < nr_trace_options; i++)
      if (i != trace_dump_device_tree) {
	ppc_trace[i] = setting;
      }
  }
  else {
    int i = 0;
    while (trace_description[i].option < nr_trace_options
	   && strcmp(option, trace_description[i].name) != 0)
      i++;
    if (trace_description[i].option < nr_trace_options)
      ppc_trace[trace_description[i].option] = setting;
    else {
      i = strtoul(option, 0, 0);
      if (i > 0 && i < nr_trace_options)
	ppc_trace[i] = setting;
      else
	error("Unknown trace option: %s\n", option);
    }
      
  }
}


extern void
trace_usage(int verbose)
{
  if (verbose) {
    printf_filtered("\n");
    printf_filtered("The following are possible <trace> options:\n");
    printf_filtered("\n");
  }
  if (verbose == 1) {
    int pos;
    int i;
    printf_filtered("  all");
    pos = strlen("all") + 2;
    for (i = 0; trace_description[i].option < nr_trace_options; i++) {
      pos += strlen(trace_description[i].name) + 2;
      if (pos > 75) {
	pos = strlen(trace_description[i].name) + 2;
	printf_filtered("\n");
      }
      printf_filtered("  %s", trace_description[i].name);
    }
    printf_filtered("\n");
  }
  if (verbose > 1) {
    const char *format = "\t%-18s%s\n";
    int i;
    printf_filtered(format, "all", "enable all the trace options");
    for (i = 0; trace_description[i].option < nr_trace_options; i++)
      printf_filtered(format,
		      trace_description[i].name,
		      (trace_description[i].description
		       ? trace_description[i].description
		       : ""));
  }
}

#endif /* _DEBUG_C_ */