From 5d69a524f81f234b3fbc41d49ba18d6f6886baba Mon Sep 17 00:00:00 2001
From: jcorgan <jcorgan@221aa14e-8319-0410-a670-987f0aec2ac5>
Date: Thu, 3 Aug 2006 04:51:51 +0000
Subject: Houston, we have a trunk.
git-svn-id: http://gnuradio.org/svn/gnuradio/trunk@3122 221aa14e-8319-0410-a670-987f0aec2ac5
---
gnuradio-core/src/lib/general/malloc16.c | 46 ++++++++++++++++++++++++++++++++
1 file changed, 46 insertions(+)
create mode 100644 gnuradio-core/src/lib/general/malloc16.c
(limited to 'gnuradio-core/src/lib/general/malloc16.c')
diff --git a/gnuradio-core/src/lib/general/malloc16.c b/gnuradio-core/src/lib/general/malloc16.c
new file mode 100644
index 0000000000..2cc6135e77
--- /dev/null
+++ b/gnuradio-core/src/lib/general/malloc16.c
@@ -0,0 +1,46 @@
+/* Wrapper functions for malloc/free that force 16-byte alignment
+ * See http://perso.club-internet.fr/matmac/sourcesc.htm
+
+ * Copyright 2001 Phil Karn, KA9Q
+ * May be used under the terms of the GNU Public License (GPL)
+ */
+
+#include "malloc16.h"
+#include <string.h>
+
+void *malloc16Align(int size){
+ void *p;
+ void **p1;
+
+ if((p = malloc(size+31)) == NULL)
+ return NULL;
+
+ /* Round up to next 16-byte boundary */
+ p1 = (void **)(((long)p + 31) & (~15));
+
+ /* Stash actual start of block just before ptr we return */
+ p1[-1] = p;
+
+ /* Return 16-byte aligned address */
+ return (void *)p1;
+}
+
+void *calloc16Align(size_t nmemb,size_t size){
+ int nbytes;
+ void *p;
+
+ nbytes = nmemb*size;
+ if((p = malloc16Align(nbytes)) == NULL)
+ return NULL;
+
+ memset(p,0,nbytes);
+ return p;
+}
+
+void free16Align(void *p){
+
+ if(p != NULL){
+ /* Retrieve pointer to actual start of block and free it */
+ free(((void **)p)[-1]);
+ }
+}
--
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