gdbserver/utils.cc

   1 /* General utility routines for the remote server for GDB.
   2    Copyright (C) 1986-2020 Free Software Foundation, Inc.
   3
   4    This file is part of GDB.
   5
   6    This program is free software; you can redistribute it and/or modify
   7    it under the terms of the GNU General Public License as published by
   8    the Free Software Foundation; either version 3 of the License, or
   9    (at your option) any later version.
  10
  11    This program is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14    GNU General Public License for more details.
  15
  16    You should have received a copy of the GNU General Public License
  17    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
  18
  19 #include "server.h"
  20
  21 #ifdef IN_PROCESS_AGENT
  22 #  define PREFIX "ipa: "
  23 #  define TOOLNAME "GDBserver in-process agent"
  24 #else
  25 #  define PREFIX "gdbserver: "
  26 #  define TOOLNAME "GDBserver"
  27 #endif
  28
  29 /* Generally useful subroutines used throughout the program.  */
  30
  31 void
  32 malloc_failure (long size)
  33 {
  34   fprintf (stderr,
  35            PREFIX "ran out of memory while trying to allocate %lu bytes\n",
  36            (unsigned long) size);
  37   exit (1);
  38 }
  39
  40 /* Print the system error message for errno, and also mention STRING
  41    as the file name for which the error was encountered.
  42    Then return to command level.  */
  43
  44 void
  45 perror_with_name (const char *string)
  46 {
  47   const char *err;
  48   char *combined;
  49
  50   err = safe_strerror (errno);
  51   if (err == NULL)
  52     err = "unknown error";
  53
  54   combined = (char *) alloca (strlen (err) + strlen (string) + 3);
  55   strcpy (combined, string);
  56   strcat (combined, ": ");
  57   strcat (combined, err);
  58
  59   error ("%s.", combined);
  60 }
  61
  62 /* Print an error message and return to top level.  */
  63
  64 void
  65 verror (const char *string, va_list args)
  66 {
  67 #ifdef IN_PROCESS_AGENT
  68   fflush (stdout);
  69   vfprintf (stderr, string, args);
  70   fprintf (stderr, "\n");
  71   exit (1);
  72 #else
  73   throw_verror (GENERIC_ERROR, string, args);
  74 #endif
  75 }
  76
  77 void
  78 vwarning (const char *string, va_list args)
  79 {
  80   fprintf (stderr, PREFIX);
  81   vfprintf (stderr, string, args);
  82   fprintf (stderr, "\n");
  83 }
  84
  85 /* Report a problem internal to GDBserver, and exit.  */
  86
  87 void
  88 internal_verror (const char *file, int line, const char *fmt, va_list args)
  89 {
  90   fprintf (stderr,  "\
  91 %s:%d: A problem internal to " TOOLNAME " has been detected.\n", file, line);
  92   vfprintf (stderr, fmt, args);
  93   fprintf (stderr, "\n");
  94   exit (1);
  95 }
  96
  97 /* Report a problem internal to GDBserver.  */
  98
  99 void
 100 internal_vwarning (const char *file, int line, const char *fmt, va_list args)
 101 {
 102   fprintf (stderr,  "\
 103 %s:%d: A problem internal to " TOOLNAME " has been detected.\n", file, line);
 104   vfprintf (stderr, fmt, args);
 105   fprintf (stderr, "\n");
 106 }
 107
 108 /* Convert a CORE_ADDR into a HEX string, like %lx.
 109    The result is stored in a circular static buffer, NUMCELLS deep.  */
 110
 111 char *
 112 paddress (CORE_ADDR addr)
 113 {
 114   return phex_nz (addr, sizeof (CORE_ADDR));
 115 }