Make a start at a regression test for the unaligned trap handler.

svn path=/head/; revision=85197

tools/regression/ia64_unaligned/Makefile

@@ -0,0 +1,6 @@
+# $FreeBSD$
+
+PROG= unaligned
+NOMAN= t
+
+.include <bsd.prog.mk>

tools/regression/ia64_unaligned/unaligned.c

@@ -0,0 +1,131 @@
+/*-
+ * Copyright (c) 2001 Doug Rabson
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * $FreeBSD$
+ */
+
+#include <sys/param.h>
+#include <stdlib.h>
+#include <stdio.h>
+
+static u_int64_t ld2(char** pp, int add)
+{
+	u_int64_t p = (u_int64_t) *pp;
+	u_int64_t v;
+	__asm __volatile("ld2 %0=[%1]" : "=r" (v) : "r" (p));
+	return v;
+}
+
+static u_int64_t ld4(char** pp, int add)
+{
+	u_int64_t p = (u_int64_t) *pp;
+	u_int64_t v;
+	__asm __volatile("ld4 %0=[%1]" : "=r" (v) : "r" (p));
+	return v;
+}
+
+static u_int64_t ld8(char** pp, int add)
+{
+	u_int64_t p = (u_int64_t) *pp;
+	u_int64_t v;
+	__asm __volatile("ld8 %0=[%1]" : "=r" (v) : "r" (p));
+	return v;
+}
+
+static u_int64_t ld8_reg(char** pp, int add)
+{
+	u_int64_t p = (u_int64_t) *pp;
+	u_int64_t v;
+	__asm __volatile("ld8 %0=[%1],%3"
+			 : "=r" (v), "=r" (p)
+			 : "1" (p), "r" (add));
+	*pp = (char*) p;
+	return v;
+}
+
+static u_int64_t ld8_8(char** pp, int add)
+{
+	u_int64_t p = (u_int64_t) *pp;
+	u_int64_t v;
+	__asm __volatile("ld8 %0=[%1],8"
+			 : "=r" (v), "=r" (p)
+			 : "1" (p));
+	*pp = (char*) p;
+	return v;
+}
+
+struct load_test {
+	u_int64_t	(*ldfunc)(char**, int);
+	int		off, add;
+	u_int64_t	value;
+};
+
+char testbuf[16] = {
+	0x00,0x11,0x22,0x33,0x44,0x55,0x66,0x77,
+	0x88,0x99,0xaa,0xbb,0xcc,0xdd,0xee,0xff
+};
+
+struct load_test tests[] = {
+	{ld8,		1,	0,	0x8877665544332211L},
+	{ld8,		2,	0,	0x9988776655443322L},
+	{ld4,		1,	0,	0x44332211L},
+	{ld4,		2,	0,	0x55443322L},
+	{ld2,		1,	0,	0x2211L},
+	{ld8_reg,	1,	4,	0x8877665544332211L},
+	{ld8_8,		1,	8,	0x8877665544332211L},
+};
+
+int
+main(int argc, char** argv)
+{
+	int verbose = 0;
+	int passed = 1;
+	int i;
+
+	if (argc == 2 && !strcmp(argv[1], "-v"))
+		verbose = 1;
+
+	for (i = 0; i < sizeof(tests) / sizeof(tests[0]); i++) {
+		struct load_test *tp = &tests[i];
+		char* p;
+		u_int64_t value;
+		p = &testbuf[tp->off];
+		value = tp->ldfunc(&p, tp->add);
+		if (verbose)
+			printf("read 0x%lx, expected 0x%lx\n",
+			       value, tp->value);
+		if (value != tp->value)
+			passed = 0;
+		if (p - &testbuf[tp->off] != tp->add) {
+			printf("postincrement was %d, %d expected\n",
+			       p - &testbuf[tp->off], tp->add);
+			passed = 0;
+		}
+	}
+	if (passed)
+		printf("passed\n");
+	else
+		printf("failed\n");
+}