binutils-gdb/gdb/proc-why.c

/* Machine independent support for SVR4 /proc (process file system) for GDB.
   Copyright 1999, 2000 Free Software Foundation, Inc.
   Written by Michael Snyder at Cygnus Solutions.
   Based on work by Fred Fish, Stu Grossman, Geoff Noer, and others.

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

/*
 * Pretty-print the pr_why value.
 * 
 * Arguments: unsigned long flags, int verbose
 *
 */

#include "defs.h"

#if defined(NEW_PROC_API)
#define _STRUCTURED_PROC 1
#endif

#include <stdio.h>
#include <sys/types.h>
#include <sys/procfs.h>

#include "proc-utils.h"

/*  Much of the information used in the /proc interface, particularly for
    printing status information, is kept as tables of structures of the
    following form.  These tables can be used to map numeric values to
    their symbolic names and to a string that describes their specific use. */

struct trans {
  int value;                    /* The numeric value */
  char *name;                   /* The equivalent symbolic value */
  char *desc;                   /* Short description of value */
};

/*  Translate values in the pr_why field of the prstatus struct. */

static struct trans pr_why_table[] =
{
#if defined (PR_REQUESTED)
  /* All platforms */
  { PR_REQUESTED, "PR_REQUESTED", 
    "Directed to stop by debugger via P(IO)CSTOP or P(IO)CWSTOP" },
#endif
#if defined (PR_SIGNALLED)
  /* All platforms */
  { PR_SIGNALLED, "PR_SIGNALLED", "Receipt of a traced signal" },
#endif
#if defined (PR_SYSENTRY)
  /* All platforms */
  { PR_SYSENTRY, "PR_SYSENTRY", "Entry to a traced system call" },
#endif
#if defined (PR_SYSEXIT)
  /* All platforms */
  { PR_SYSEXIT, "PR_SYSEXIT", "Exit from a traced system call" },
#endif
#if defined (PR_JOBCONTROL)
  /* All platforms */
  { PR_JOBCONTROL, "PR_JOBCONTROL", "Default job control stop signal action" },
#endif
#if defined (PR_FAULTED)
  /* All platforms */
  { PR_FAULTED, "PR_FAULTED", "Incurred a traced hardware fault" },
#endif
#if defined (PR_SUSPENDED)
  /* Solaris and UnixWare */
  { PR_SUSPENDED, "PR_SUSPENDED", "Process suspended" },
#endif
#if defined (PR_CHECKPOINT)
  /* Solaris only */
  { PR_CHECKPOINT, "PR_CHECKPOINT", "Process stopped at checkpoint" },
#endif
#if defined (PR_FORKSTOP)
  /* OSF only */
  { PR_FORKSTOP, "PR_FORKSTOP", "Process stopped at end of fork call" },
#endif
#if defined (PR_TCRSTOP)
  /* OSF only */
  { PR_TCRSTOP, "PR_TCRSTOP", "Process stopped on thread creation" },
#endif
#if defined (PR_TTSTOP)
  /* OSF only */
  { PR_TTSTOP, "PR_TTSTOP", "Process stopped on thread termination" },
#endif
#if defined (PR_DEAD)
  /* OSF only */
  { PR_DEAD, "PR_DEAD", "Process stopped in exit system call" },
#endif
};

void
proc_prettyfprint_why (FILE *file, unsigned long why, unsigned long what,
		       int verbose)
{
  int i;

  if (why == 0)
    return;

  for (i = 0; i < sizeof (pr_why_table) / sizeof (pr_why_table[0]); i++)
    if (why == pr_why_table[i].value)
      {
	fprintf (file, "%s ", pr_why_table[i].name);
	if (verbose)
	  fprintf (file, ": %s ", pr_why_table[i].desc);

	switch (why) {
#ifdef PR_REQUESTED
	case PR_REQUESTED:
	  break;	/* Nothing more to print. */
#endif
#ifdef PR_SIGNALLED
	case PR_SIGNALLED:
	  proc_prettyfprint_signal (file, what, verbose);
	  break;
#endif
#ifdef PR_FAULTED
	case PR_FAULTED:
	  proc_prettyfprint_fault (file, what, verbose);
	  break;
#endif
#ifdef PR_SYSENTRY
	case PR_SYSENTRY:
	  fprintf (file, "Entry to ");
	  proc_prettyfprint_syscall (file, what, verbose);
	  break;
#endif
#ifdef PR_SYSEXIT
	case PR_SYSEXIT:
	  fprintf (file, "Exit from ");
	  proc_prettyfprint_syscall (file, what, verbose);
	  break;
#endif
#ifdef PR_JOBCONTROL
	case PR_JOBCONTROL:
	  proc_prettyfprint_signal (file, what, verbose);
	  break;
#endif
#ifdef PR_DEAD
	case PR_DEAD:
	  fprintf (file, "Exit status: %ld\n", what);
	  break;
#endif
	default:
	  fprintf (file, "Unknown why %ld, what %ld\n", why, what);
	  break;
	}
	fprintf (file, "\n");

	return;
      }
  fprintf (file, "Unknown pr_why.\n");
}

void
proc_prettyprint_why (unsigned long why, unsigned long what, int verbose)
{
  proc_prettyfprint_why (stdout, why, what, verbose);
}