2009-06-19 Aleksandar Ristovski <aristovski@qnx.com>

[deliverable/binutils-gdb.git] / gdb / gdbserver / utils.c

diff --git a/gdb/gdbserver/utils.c b/gdb/gdbserver/utils.c
index a8ea9a15f8b7f0facfc6aa270fac64fa039d535e..a03c6b2a6b2613da0850703b9bcdf4b62622702f 100644 (file)
--- a/gdb/gdbserver/utils.c
+++ b/gdb/gdbserver/utils.c
@@ -1,12 +1,12 @@
 /* General utility routines for the remote server for GDB.
-   Copyright 1986, 1989, 1993, 1995, 1996, 1997, 1999, 2000, 2002
-   Free Software Foundation, Inc.
+   Copyright (C) 1986, 1989, 1993, 1995, 1996, 1997, 1999, 2000, 2002, 2003,
+   2007, 2008, 2009 Free Software Foundation, Inc.
 
    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
+   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,
@@ -15,34 +15,107 @@
    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.  */
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
 
 #include "server.h"
 #include <stdio.h>
 #include <string.h>
+#include <stdlib.h>
+#if HAVE_ERRNO_H
+#include <errno.h>
+#endif
+#if HAVE_MALLOC_H
+#include <malloc.h>
+#endif
 
 /* Generally useful subroutines used throughout the program.  */
 
+static void malloc_failure (size_t size) ATTR_NORETURN;
+
+static void
+malloc_failure (size_t size)
+{
+  fprintf (stderr, "gdbserver: ran out of memory while trying to allocate %lu bytes\n",
+          (unsigned long) size);
+  exit (1);
+}
+
+/* Allocate memory without fail.
+   If malloc fails, this will print a message to stderr and exit.  */
+
+void *
+xmalloc (size_t size)
+{
+  void *newmem;
+
+  if (size == 0)
+    size = 1;
+  newmem = malloc (size);
+  if (!newmem)
+    malloc_failure (size);
+
+  return newmem;
+}
+
+/* Allocate memory without fail and set it to zero.
+   If malloc fails, this will print a message to stderr and exit.  */
+
+void *
+xcalloc (size_t nelem, size_t elsize)
+{
+  void *newmem;
+
+  if (nelem == 0 || elsize == 0)
+    nelem = elsize = 1;
+
+  newmem = calloc (nelem, elsize);
+  if (!newmem)
+    malloc_failure (nelem * elsize);
+
+  return newmem;
+}
+
+/* Copy a string into a memory buffer.
+   If malloc fails, this will print a message to stderr and exit.  */
+
+char *
+xstrdup (const char *s)
+{
+  char *ret = strdup (s);
+  if (ret == NULL)
+    malloc_failure (strlen (s) + 1);
+  return ret;
+}
+
+/* Free a standard argv vector.  */
+
+void
+freeargv (char **vector)
+{
+  char **scan;
+
+  if (vector != NULL)
+    {
+      for (scan = vector; *scan != NULL; scan++)
+       {
+         free (*scan);
+       }
+      free (vector);
+    }
+}
+
 /* Print the system error message for errno, and also mention STRING
    as the file name for which the error was encountered.
    Then return to command level.  */
 
 void
-perror_with_name (char *string)
+perror_with_name (const char *string)
 {
-#ifndef STDC_HEADERS
-  extern int sys_nerr;
-  extern char *sys_errlist[];
-  extern int errno;
-#endif
   const char *err;
   char *combined;
 
-  if (errno < sys_nerr)
-    err = sys_errlist[errno];
-  else
+  err = strerror (errno);
+  if (err == NULL)
     err = "unknown error";
 
   combined = (char *) alloca (strlen (err) + strlen (string) + 3);
@@ -57,7 +130,7 @@ perror_with_name (char *string)
    STRING is the error message, used as a fprintf string,
    and ARG is passed as an argument to it.  */
 
-NORETURN void
+void
 error (const char *string,...)
 {
   extern jmp_buf toplevel;
@@ -74,12 +147,12 @@ error (const char *string,...)
    STRING and ARG are passed to fprintf.  */
 
 /* VARARGS */
-NORETURN void
+void
 fatal (const char *string,...)
 {
   va_list args;
   va_start (args, string);
-  fprintf (stderr, "gdb: ");
+  fprintf (stderr, "gdbserver: ");
   vfprintf (stderr, string, args);
   fprintf (stderr, "\n");
   va_end (args);
@@ -92,7 +165,7 @@ warning (const char *string,...)
 {
   va_list args;
   va_start (args, string);
-  fprintf (stderr, "gdb: ");
+  fprintf (stderr, "gdbserver: ");
   vfprintf (stderr, string, args);
   fprintf (stderr, "\n");
   va_end (args);