gdb/gdbserver/utils.c

   1 /* General utility routines for the remote server for GDB.
   2    Copyright 1986, 1989, 1993, 1995, 1996, 1997, 1999, 2000, 2002
   3    Free Software Foundation, Inc.
   4
   5    This file is part of GDB.
   6
   7    This program is free software; you can redistribute it and/or modify
   8    it under the terms of the GNU General Public License as published by
   9    the Free Software Foundation; either version 2 of the License, or
  10    (at your option) any later version.
  11
  12    This program is distributed in the hope that it will be useful,
  13    but WITHOUT ANY WARRANTY; without even the implied warranty of
  14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15    GNU General Public License for more details.
  16
  17    You should have received a copy of the GNU General Public License
  18    along with this program; if not, write to the Free Software
  19    Foundation, Inc., 59 Temple Place - Suite 330,
  20    Boston, MA 02111-1307, USA.  */
  21
  22 #include "server.h"
  23 #include <stdio.h>
  24 #include <string.h>
  25
  26 /* Generally useful subroutines used throughout the program.  */
  27
  28 /* Print the system error message for errno, and also mention STRING
  29    as the file name for which the error was encountered.
  30    Then return to command level.  */
  31
  32 void
  33 perror_with_name (char *string)
  34 {
  35 #ifndef STDC_HEADERS
  36   extern int sys_nerr;
  37   extern char *sys_errlist[];
  38   extern int errno;
  39 #endif
  40   const char *err;
  41   char *combined;
  42
  43   if (errno < sys_nerr)
  44     err = sys_errlist[errno];
  45   else
  46     err = "unknown error";
  47
  48   combined = (char *) alloca (strlen (err) + strlen (string) + 3);
  49   strcpy (combined, string);
  50   strcat (combined, ": ");
  51   strcat (combined, err);
  52
  53   error ("%s.", combined);
  54 }
  55
  56 /* Print an error message and return to command level.
  57    STRING is the error message, used as a fprintf string,
  58    and ARG is passed as an argument to it.  */
  59
  60 void
  61 error (const char *string,...)
  62 {
  63   extern jmp_buf toplevel;
  64   va_list args;
  65   va_start (args, string);
  66   fflush (stdout);
  67   vfprintf (stderr, string, args);
  68   fprintf (stderr, "\n");
  69   longjmp (toplevel, 1);
  70 }
  71
  72 /* Print an error message and exit reporting failure.
  73    This is for a error that we cannot continue from.
  74    STRING and ARG are passed to fprintf.  */
  75
  76 /* VARARGS */
  77 void
  78 fatal (const char *string,...)
  79 {
  80   va_list args;
  81   va_start (args, string);
  82   fprintf (stderr, "gdb: ");
  83   vfprintf (stderr, string, args);
  84   fprintf (stderr, "\n");
  85   va_end (args);
  86   exit (1);
  87 }
  88
  89 /* VARARGS */
  90 void
  91 warning (const char *string,...)
  92 {
  93   va_list args;
  94   va_start (args, string);
  95   fprintf (stderr, "gdb: ");
  96   vfprintf (stderr, string, args);
  97   fprintf (stderr, "\n");
  98   va_end (args);
  99 }