Add memcpy test.

regress/lib/libc/string/Makefile

@@ -1,5 +1,6 @@
-# $NetBSD: Makefile,v 1.7 2005/10/13 21:36:11 tnozaki Exp $
+# $NetBSD: Makefile,v 1.8 2005/12/06 08:14:48 ross Exp $
 
-SUBDIR+= memchr memmem strcat strchr strcmp strcpy strlen strrchr swab wcsncpy
+SUBDIR+= memchr memmem strcat strchr strcmp strcpy strlen strrchr swab wcsncpy\
+	memcpy
 
 .include <bsd.subdir.mk>

regress/lib/libc/string/memcpy/Makefile

@@ -0,0 +1,10 @@
+#	$NetBSD: Makefile,v 1.1 2005/12/06 08:14:48 ross Exp $
+
+PROG=	memcpy_test
+NOMAN=
+WARNS?=	4
+
+regress: ${PROG}
+	./${PROG}
+
+.include <bsd.prog.mk>

regress/lib/libc/string/memcpy/memcpy_test.c

@@ -0,0 +1,65 @@
+#include <sys/types.h>
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <assert.h>
+#include <md5.h>
+
+#define	ALIGNMENTS 16
+#define	LENGTHS	    4
+#define BLOCKTYPES 4
+
+MD5_CTX mc[1];
+
+typedef	unsigned char testBlock_t[ALIGNMENTS * LENGTHS];
+
+testBlock_t bss1, bss2;
+
+unsigned char *start[BLOCKTYPES] = {
+		bss1, bss2
+};
+
+char result[100];
+const char goodResult[] = "7b405d24bc03195474c70ddae9e1f8fb";
+
+void runTest(unsigned char *, unsigned char *);
+
+int
+main(int ac, char **av)
+{
+	int i, j;
+	testBlock_t auto1, auto2;
+
+	start[2] = auto1;
+	start[3] = auto2;
+
+	srandom(0L);
+	MD5Init(mc);
+	for (i = 0; i < BLOCKTYPES; ++i)
+		for (j = 0; j < BLOCKTYPES; ++j)
+			if (i != j)
+				runTest(start[i], start[j]);
+	MD5End(mc, result);
+	return strcmp(result, goodResult);
+}
+
+void runTest(unsigned char *b1, unsigned char *b2)
+{
+	int	i, j, k, m, n;
+
+	for (i = 0; i < ALIGNMENTS; ++i) {
+		for (j = 0; j < ALIGNMENTS; ++j) {
+			k = sizeof(testBlock_t) - (i > j ? i : j);
+			for (m = 0; m < k; ++m) {
+				for (n = 0; n < sizeof(testBlock_t); ++n) {
+					b1[n] = (unsigned char)random();
+					b2[n] = (unsigned char)random();
+				}
+				memcpy(b1 + i, b2 + j, m);
+				MD5Update(mc, b1, sizeof(testBlock_t));
+				MD5Update(mc, b2, sizeof(testBlock_t));
+			}
+		}
+	}
+}