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-rw-r--r--gnu/usr.bin/gdb/mmalloc/mmemalign.c64
1 files changed, 64 insertions, 0 deletions
diff --git a/gnu/usr.bin/gdb/mmalloc/mmemalign.c b/gnu/usr.bin/gdb/mmalloc/mmemalign.c
new file mode 100644
index 000000000000..63350a215cd3
--- /dev/null
+++ b/gnu/usr.bin/gdb/mmalloc/mmemalign.c
@@ -0,0 +1,64 @@
+/* Copyright (C) 1991, 1992 Free Software Foundation, Inc.
+This file is part of the GNU C Library.
+
+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. */
+
+#include "mmalloc.h"
+
+PTR
+mmemalign (md, alignment, size)
+ PTR md;
+ size_t alignment;
+ size_t size;
+{
+ PTR result;
+ unsigned long int adj;
+ struct alignlist *l;
+ struct mdesc *mdp;
+
+ size = ((size + alignment - 1) / alignment) * alignment;
+
+ if ((result = mmalloc (md, size)) != NULL)
+ {
+ adj = RESIDUAL (result, alignment);
+ if (adj != 0)
+ {
+ mdp = MD_TO_MDP (md);
+ for (l = mdp -> aligned_blocks; l != NULL; l = l -> next)
+ {
+ if (l -> aligned == NULL)
+ {
+ /* This slot is free. Use it. */
+ break;
+ }
+ }
+ if (l == NULL)
+ {
+ l = (struct alignlist *) mmalloc (md, sizeof (struct alignlist));
+ if (l == NULL)
+ {
+ mfree (md, result);
+ return (NULL);
+ }
+ }
+ l -> exact = result;
+ result = l -> aligned = (char *) result + alignment - adj;
+ l -> next = mdp -> aligned_blocks;
+ mdp -> aligned_blocks = l;
+ }
+ }
+ return (result);
+}