Initial revision

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@14877 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 113 insertions, 0 deletions

diff --git a/libiberty/xmalloc.c b/libiberty/xmalloc.c
new file mode 100644
index 00000000000..c479b1f9e95
--- /dev/null
+++ b/libiberty/xmalloc.c
@@ -0,0 +1,113 @@
+/* memory allocation routines with error checking.
+   Copyright 1989, 90, 91, 92, 93, 94 Free Software Foundation, Inc.
+   
+This file is part of the libiberty library.
+Libiberty is free software; you can redistribute it and/or
+modify it under the terms of the GNU Library General Public
+License as published by the Free Software Foundation; either
+version 2 of the License, or (at your option) any later version.
+
+Libiberty 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
+Library General Public License for more details.
+
+You should have received a copy of the GNU Library General Public
+License along with libiberty; see the file COPYING.LIB.  If
+not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+Boston, MA 02111-1307, USA.  */
+
+#include "ansidecl.h"
+#include "libiberty.h"
+
+#include <stdio.h>
+
+#ifdef __STDC__
+#include <stddef.h>
+#else
+#define size_t unsigned long
+#define ptrdiff_t long
+#endif
+
+#if VMS
+#include <stdlib.h>
+#include <unixlib.h>
+#else
+/* For systems with larger pointers than ints, these must be declared.  */
+PTR malloc PARAMS ((size_t));
+PTR realloc PARAMS ((PTR, size_t));
+PTR sbrk PARAMS ((ptrdiff_t));
+#endif
+
+/* The program name if set.  */
+static const char *name = "";
+
+/* The initial sbrk, set when the program name is set.  */
+static char *first_break = NULL;
+
+void
+xmalloc_set_program_name (s)
+     const char *s;
+{
+  name = s;
+  if (first_break == NULL)
+    first_break = (char *) sbrk (0);
+}
+
+PTR
+xmalloc (size)
+    size_t size;
+{
+  PTR newmem;
+
+  if (size == 0)
+    size = 1;
+  newmem = malloc (size);
+  if (!newmem)
+    {
+      extern char **environ;
+      size_t allocated;
+
+      if (first_break != NULL)
+	allocated = (char *) sbrk (0) - first_break;
+      else
+	allocated = (char *) sbrk (0) - (char *) &environ;
+      fprintf (stderr,
+	       "\n%s%sCan not allocate %lu bytes after allocating %lu bytes\n",
+	       name, *name ? ": " : "",
+	       (unsigned long) size, (unsigned long) allocated);
+      xexit (1);
+    }
+  return (newmem);
+}
+
+PTR
+xrealloc (oldmem, size)
+    PTR oldmem;
+    size_t size;
+{
+  PTR newmem;
+
+  if (size == 0)
+    size = 1;
+  if (!oldmem)
+    newmem = malloc (size);
+  else
+    newmem = realloc (oldmem, size);
+  if (!newmem)
+    {
+      extern char **environ;
+      size_t allocated;
+
+      if (first_break != NULL)
+	allocated = (char *) sbrk (0) - first_break;
+      else
+	allocated = (char *) sbrk (0) - (char *) &environ;
+      fprintf (stderr,
+	       "\n%s%sCan not reallocate %lu bytes after allocating %lu bytes\n",
+	       name, *name ? ": " : "",
+	       (unsigned long) size, (unsigned long) allocated);
+      xexit (1);
+    }
+  return (newmem);
+}