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authorIlya Leoshkevich <iii@linux.ibm.com>2022-10-25 23:30:08 +0200
committerRichard Henderson <richard.henderson@linaro.org>2023-02-04 06:19:42 -1000
commitc432198ab09205d06ba9cf53cb4610d5fae22aa7 (patch)
tree9bd97751d656b0cb17db8cd2ed0bb1fd8fa3ea4a /tests/tcg/s390x
parent29b8de001f8ea2f36d4de5a250d1150492311529 (diff)
tests/tcg/s390x: Add clst.c
Add a basic test to prevent regressions. Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com> Message-Id: <20221025213008.2209006-2-iii@linux.ibm.com> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Diffstat (limited to 'tests/tcg/s390x')
-rw-r--r--tests/tcg/s390x/Makefile.target1
-rw-r--r--tests/tcg/s390x/clst.c82
2 files changed, 83 insertions, 0 deletions
diff --git a/tests/tcg/s390x/Makefile.target b/tests/tcg/s390x/Makefile.target
index ab7a3bcfb2..79250f31dd 100644
--- a/tests/tcg/s390x/Makefile.target
+++ b/tests/tcg/s390x/Makefile.target
@@ -25,6 +25,7 @@ TESTS+=signals-s390x
TESTS+=branch-relative-long
TESTS+=noexec
TESTS+=div
+TESTS+=clst
Z13_TESTS=vistr
$(Z13_TESTS): CFLAGS+=-march=z13 -O2
diff --git a/tests/tcg/s390x/clst.c b/tests/tcg/s390x/clst.c
new file mode 100644
index 0000000000..ed2fe7326c
--- /dev/null
+++ b/tests/tcg/s390x/clst.c
@@ -0,0 +1,82 @@
+#define _GNU_SOURCE
+#include <stdio.h>
+#include <stdlib.h>
+
+static int clst(char sep, const char **s1, const char **s2)
+{
+ const char *r1 = *s1;
+ const char *r2 = *s2;
+ int cc;
+
+ do {
+ register int r0 asm("r0") = sep;
+
+ asm("clst %[r1],%[r2]\n"
+ "ipm %[cc]\n"
+ "srl %[cc],28"
+ : [r1] "+r" (r1), [r2] "+r" (r2), "+r" (r0), [cc] "=r" (cc)
+ :
+ : "cc");
+ *s1 = r1;
+ *s2 = r2;
+ } while (cc == 3);
+
+ return cc;
+}
+
+static const struct test {
+ const char *name;
+ char sep;
+ const char *s1;
+ const char *s2;
+ int exp_cc;
+ int exp_off;
+} tests[] = {
+ {
+ .name = "cc0",
+ .sep = 0,
+ .s1 = "aa",
+ .s2 = "aa",
+ .exp_cc = 0,
+ .exp_off = 0,
+ },
+ {
+ .name = "cc1",
+ .sep = 1,
+ .s1 = "a\x01",
+ .s2 = "aa\x01",
+ .exp_cc = 1,
+ .exp_off = 1,
+ },
+ {
+ .name = "cc2",
+ .sep = 2,
+ .s1 = "abc\x02",
+ .s2 = "abb\x02",
+ .exp_cc = 2,
+ .exp_off = 2,
+ },
+};
+
+int main(void)
+{
+ const struct test *t;
+ const char *s1, *s2;
+ size_t i;
+ int cc;
+
+ for (i = 0; i < sizeof(tests) / sizeof(tests[0]); i++) {
+ t = &tests[i];
+ s1 = t->s1;
+ s2 = t->s2;
+ cc = clst(t->sep, &s1, &s2);
+ if (cc != t->exp_cc ||
+ s1 != t->s1 + t->exp_off ||
+ s2 != t->s2 + t->exp_off) {
+ fprintf(stderr, "%s\n", t->name);
+ return EXIT_FAILURE;
+ }
+ }
+
+ return EXIT_SUCCESS;
+}