Subversion Repositories openrisc_2011-10-31

/* Machine-independent support for SVR4 /proc (process file system)

   Copyright (C) 1999, 2000, 2004, 2007, 2008 Free Software Foundation, Inc.

   Written by Michael Snyder at Cygnus Solutions.

   Based on work by Fred Fish, Stu Grossman, Geoff Noer, and others.

   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 3 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, see <http://www.gnu.org/licenses/>.  */

#include "defs.h"

#ifdef 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 a `struct prstatus' or

   `struct lwpstatus'.  */

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/1 only.  */

  { PR_FORKSTOP, "PR_FORKSTOP", "Process stopped at end of fork call" },

#endif

#if defined (PR_TCRSTOP)

  /* OSF/1 only.  */

  { PR_TCRSTOP, "PR_TCRSTOP", "Process stopped on thread creation" },

#endif

#if defined (PR_TTSTOP)

  /* OSF/1 only.  */

  { PR_TTSTOP, "PR_TTSTOP", "Process stopped on thread termination" },

#endif

#if defined (PR_DEAD)

  /* OSF/1 only.  */

  { PR_DEAD, "PR_DEAD", "Process stopped in exit system call" },

#endif

};

/* Pretty-print the pr_why field of a `struct prstatus' or `struct

   lwpstatus'.  */

void

proc_prettyfprint_why (FILE *file, unsigned long why, unsigned long what,

                       int verbose)

{

  int i;

  if (why == 0)

    return;

  for (i = 0; i < ARRAY_SIZE (pr_why_table); 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);

}