[patch] Evaluate the size of void* while executing sswf::patch()

sswf-1.8.0.patch (text/plain), 1.65 KB, created by Fabio Correa on 2007-03-20 16:24:12 UTC

diff --recursive --unified sswf-1.8.0/src/lib/libsswf_util.c++ sswf-1.8.0-new/src/lib/libsswf_util.c++
--- sswf-1.8.0/src/lib/libsswf_util.c++	2006-11-28 03:08:07.000000000 -0500
+++ sswf-1.8.0-new/src/lib/libsswf_util.c++	2007-03-20 11:07:26.000000000 -0500
@@ -489,12 +489,12 @@
 
 
 /** \brief Swap the content of two buffers
- *
+ * Modifications to 64-bit by Fabio A. Correa <facorread at gmail>
  * The swap() function swaps the content of buffer s1 with buffer s2.
  * 'size' bytes are swapped.
  *
- * If s1 and s2 both point to a 32 bit value and the size is a multiple
- * of 4 bytes, then the swap is done 32 bits at a time. Otherwise the
+ * If s1 and s2 both point to a 64 bit value and the size is a multiple
+ * of 8 bytes, then the swap is done 64 bits at a time. Otherwise the
  * default 8 bits at a time function is used.
  *
  * \param s1 One of the buffers to swap
@@ -509,7 +509,20 @@
 	if(size == 0) {
 		return;
 	}
-	if((size & 3) == 0 && (((int32_t) s1) & 3) == 0 && (((int32_t) s2) & 3) == 0) {
+	if((sizeof(void*) == 8) && (size & 4) == 0 && ((((int64_t)s1) & 4) == 0) && ((((int64_t)s2) & 4) == 0)) {
+		int64_t	a;
+
+		assert(sizeof(int64_t) == 8, "the swap() function assumes that the sizeof(int64_t) == 8...\n");
+		do {
+			a = * (int64_t *) s1;
+			* (int64_t *) s1 = * (int64_t *) s2;
+			* (int64_t *) s2 = a;
+			s1 = (int64_t *) s1 + 1;
+			s2 = (int64_t *) s2 + 1;
+			size -= sizeof(int64_t);
+		} while(size > 0);
+	}
+        else if((sizeof(void*) == 4) && (size & 3) == 0 && (((int32_t) s1) & 3) == 0 && (((int32_t) s2) & 3) == 0) {
 		int32_t	a;
 
 		assert(sizeof(int32_t) == 4, "the swap() function assumes that the sizeof(int32_t) == 4...\n");