Initial creation of sourceware repository

1 files changed, 0 insertions, 196 deletions

diff --git a/mmalloc/mmcheck.c b/mmalloc/mmcheck.c
deleted file mode 100644
index 2a4b09e..0000000
--- a/mmalloc/mmcheck.c
+++ /dev/null
@@ -1,196 +0,0 @@
-/* Standard debugging hooks for `mmalloc'.
-   Copyright 1990, 1991, 1992 Free Software Foundation
-
-   Written May 1989 by Mike Haertel.
-   Heavily modified Mar 1992 by Fred Fish (fnf@cygnus.com)
-
-The GNU C Library 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.
-
-The GNU C Library 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 the GNU C Library; see the file COPYING.LIB.  If
-not, write to the Free Software Foundation, Inc., 675 Mass Ave,
-Cambridge, MA 02139, USA.
-
- The author may be reached (Email) at the address mike@ai.mit.edu,
- or (US mail) as Mike Haertel c/o Free Software Foundation. */
-
-#include "mmalloc.h"
-
-/* Default function to call when something awful happens.  The application
-   can specify an alternate function to be called instead (and probably will
-   want to). */
-
-extern void abort PARAMS ((void));
-
-/* Arbitrary magical numbers.  */
-
-#define MAGICWORD	0xfedabeeb	/* Magic word for active chunk */
-#define MAGICWORDFREE	0xdeadbeef	/* Magic word for inactive chunk */
-#define MAGICBYTE	((char) 0xd7)
-
-/* Each memory allocation is bounded by a header structure and a trailer
-   byte.  I.E.
-
-	<size><magicword><user's allocation><magicbyte>
-
-   The pointer returned to the user points to the first byte in the
-   user's allocation area.  The magic word can be tested to detect
-   buffer underruns and the magic byte can be tested to detect overruns. */
-
-struct hdr
-  {
-    size_t size;		/* Exact size requested by user.  */
-    unsigned long int magic;	/* Magic number to check header integrity.  */
-  };
-
-/* Check the magicword and magicbyte, and if either is corrupted then
-   call the emergency abort function specified for the heap in use. */
-
-static void
-checkhdr (mdp, hdr)
-  struct mdesc *mdp;
-  CONST struct hdr *hdr;
-{
-  if (hdr -> magic != MAGICWORD ||
-      ((char *) &hdr[1])[hdr -> size] != MAGICBYTE)
-    {
-      (*mdp -> abortfunc)();
-    }
-}
-
-static void
-mfree_check (md, ptr)
-  PTR md;
-  PTR ptr;
-{
-  struct hdr *hdr = ((struct hdr *) ptr) - 1;
-  struct mdesc *mdp;
-
-  mdp = MD_TO_MDP (md);
-  checkhdr (mdp, hdr);
-  hdr -> magic = MAGICWORDFREE;
-  mdp -> mfree_hook = NULL;
-  mfree (md, hdr);
-  mdp -> mfree_hook = mfree_check;
-}
-
-static PTR
-mmalloc_check (md, size)
-  PTR md;
-  size_t size;
-{
-  struct hdr *hdr;
-  struct mdesc *mdp;
-  size_t nbytes;
-
-  mdp = MD_TO_MDP (md);
-  mdp -> mmalloc_hook = NULL;
-  nbytes = sizeof (struct hdr) + size + 1;
-  hdr = (struct hdr *) mmalloc (md, nbytes);
-  mdp -> mmalloc_hook = mmalloc_check;
-  if (hdr != NULL)
-    {
-      hdr -> size = size;
-      hdr -> magic = MAGICWORD;
-      hdr++;
-      *((char *) hdr + size) = MAGICBYTE;
-    }
-  return ((PTR) hdr);
-}
-
-static PTR
-mrealloc_check (md, ptr, size)
-  PTR md;
-  PTR ptr;
-  size_t size;
-{
-  struct hdr *hdr = ((struct hdr *) ptr) - 1;
-  struct mdesc *mdp;
-  size_t nbytes;
-
-  mdp = MD_TO_MDP (md);
-  checkhdr (mdp, hdr);
-  mdp -> mfree_hook = NULL;
-  mdp -> mmalloc_hook = NULL;
-  mdp -> mrealloc_hook = NULL;
-  nbytes = sizeof (struct hdr) + size + 1;
-  hdr = (struct hdr *) mrealloc (md, (PTR) hdr, nbytes);
-  mdp -> mfree_hook = mfree_check;
-  mdp -> mmalloc_hook = mmalloc_check;
-  mdp -> mrealloc_hook = mrealloc_check;
-  if (hdr != NULL)
-    {
-      hdr -> size = size;
-      hdr++;
-      *((char *) hdr + size) = MAGICBYTE;
-    }
-  return ((PTR) hdr);
-}
-
-/* Turn on default checking for mmalloc/mrealloc/mfree, for the heap specified
-   by MD.  If FUNC is non-NULL, it is a pointer to the function to call
-   to abort whenever memory corruption is detected.  By default, this is the
-   standard library function abort().
-
-   Note that we disallow installation of initial checking hooks if mmalloc
-   has been called at any time for this particular heap, since if any region
-   that is allocated prior to installation of the hooks is subsequently
-   reallocated or freed after installation of the hooks, it is guaranteed
-   to trigger a memory corruption error.  We do this by checking the state
-   of the MMALLOC_INITIALIZED flag.
-
-   However, we can call this function at any time after the initial call,
-   to update the function pointers to the checking routines and to the
-   user defined corruption handler routine, as long as these function pointers
-   have been previously extablished by the initial call.  Note that we
-   do this automatically when remapping an previously used heap, to ensure
-   that the hooks get updated to the correct values, although the corruption
-   handler pointer gets set back to the default.  The application can then
-   call mmcheck to use a different corruption handler if desired.
-
-   Returns non-zero if checking is successfully enabled, zero otherwise. */
-
-int
-mmcheck (md, func)
-  PTR md;
-  void (*func) PARAMS ((void));
-{
-  struct mdesc *mdp;
-  int rtnval;
-
-  mdp = MD_TO_MDP (md);
-
-  /* We can safely set or update the abort function at any time, regardless
-     of whether or not we successfully do anything else. */
-
-  mdp -> abortfunc = (func != NULL ? func : abort);
-
-  /* If we haven't yet called mmalloc the first time for this heap, or if we
-     have hooks that were previously installed, then allow the hooks to be
-     initialized or updated. */
-
-  if (1 /* FIXME: Always allow installation for now. */ ||
-      !(mdp -> flags & MMALLOC_INITIALIZED) ||
-      (mdp -> mfree_hook != NULL))
-    {
-      mdp -> mfree_hook = mfree_check;
-      mdp -> mmalloc_hook = mmalloc_check;
-      mdp -> mrealloc_hook = mrealloc_check;
-      mdp -> flags |= MMALLOC_MMCHECK_USED;
-      rtnval = 1;
-    }
-  else
-    {
-      rtnval = 0;
-    }
-
-  return (rtnval);
-}