s390x, tests and misc. patches

[PULL 06/12] tests/tcg/s390x: Test CONVERT TO DECIMAL

Thomas Huth posted 12 patches 9 months, 3 weeks ago

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Maintainers: Nicholas Piggin <npiggin@gmail.com>, Daniel Henrique Barboza <danielhb413@gmail.com>, "Cédric Le Goater" <clg@kaod.org>, David Gibson <david@gibson.dropbear.id.au>, Harsh Prateek Bora <harshpb@linux.ibm.com>, Paolo Bonzini <pbonzini@redhat.com>, Fam Zheng <fam@euphon.net>, "Marc-André Lureau" <marcandre.lureau@redhat.com>, "Daniel P. Berrangé" <berrange@redhat.com>, Thomas Huth <thuth@redhat.com>, "Philippe Mathieu-Daudé" <philmd@linaro.org>, Eduardo Habkost <eduardo@habkost.net>, Richard Henderson <richard.henderson@linaro.org>, David Hildenbrand <david@redhat.com>, Ilya Leoshkevich <iii@linux.ibm.com>, Halil Pasic <pasic@linux.ibm.com>, Christian Borntraeger <borntraeger@linux.ibm.com>, "Alex Bennée" <alex.bennee@linaro.org>, Wainer dos Santos Moschetta <wainersm@redhat.com>, Beraldo Leal <bleal@redhat.com>, Ed Maste <emaste@freebsd.org>, Li-Wen Hsu <lwhsu@freebsd.org>, Warner Losh <imp@bsdimp.com>, Kyle Evans <kevans@freebsd.org>

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[PULL 06/12] tests/tcg/s390x: Test CONVERT TO DECIMAL

Posted by Thomas Huth 9 months, 3 weeks ago

From: Ilya Leoshkevich <iii@linux.ibm.com>

Check the CVD's, CVDY's, and CVDG's corner cases.

Reviewed-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com>
Message-ID: <20240205205830.6425-4-iii@linux.ibm.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
---
 tests/tcg/s390x/cvd.c           | 63 +++++++++++++++++++++++++++++++++
 tests/tcg/s390x/Makefile.target |  1 +
 2 files changed, 64 insertions(+)
 create mode 100644 tests/tcg/s390x/cvd.c

diff --git a/tests/tcg/s390x/cvd.c b/tests/tcg/s390x/cvd.c
new file mode 100644
index 0000000000..d776688985
--- /dev/null
+++ b/tests/tcg/s390x/cvd.c
@@ -0,0 +1,63 @@
+/*
+ * Test the CONVERT TO DECIMAL instruction.
+ *
+ * SPDX-License-Identifier: GPL-2.0-or-later
+ */
+#include <assert.h>
+#include <stdint.h>
+#include <stdlib.h>
+
+static uint64_t cvd(int32_t x)
+{
+    uint64_t ret;
+
+    asm("cvd %[x],%[ret]" : [ret] "=R" (ret) : [x] "r" (x));
+
+    return ret;
+}
+
+static uint64_t cvdy(int32_t x)
+{
+    uint64_t ret;
+
+    asm("cvdy %[x],%[ret]" : [ret] "=T" (ret) : [x] "r" (x));
+
+    return ret;
+}
+
+static __uint128_t cvdg(int64_t x)
+{
+    __uint128_t ret;
+
+    asm("cvdg %[x],%[ret]" : [ret] "=T" (ret) : [x] "r" (x));
+
+    return ret;
+}
+
+int main(void)
+{
+    __uint128_t m = (((__uint128_t)0x9223372036854775) << 16) | 0x8070;
+
+    assert(cvd(0) == 0xc);
+    assert(cvd(1) == 0x1c);
+    assert(cvd(25594) == 0x25594c);
+    assert(cvd(-1) == 0x1d);
+    assert(cvd(0x7fffffff) == 0x2147483647c);
+    assert(cvd(-0x80000000) == 0x2147483648d);
+
+    assert(cvdy(0) == 0xc);
+    assert(cvdy(1) == 0x1c);
+    assert(cvdy(25594) == 0x25594c);
+    assert(cvdy(-1) == 0x1d);
+    assert(cvdy(0x7fffffff) == 0x2147483647c);
+    assert(cvdy(-0x80000000) == 0x2147483648d);
+
+    assert(cvdg(0) == 0xc);
+    assert(cvdg(1) == 0x1c);
+    assert(cvdg(25594) == 0x25594c);
+    assert(cvdg(-1) == 0x1d);
+    assert(cvdg(0x7fffffffffffffff) == (m + 0xc));
+    assert(cvdg(-0x8000000000000000) == (m + 0x1d));
+
+    return EXIT_SUCCESS;
+}
diff --git a/tests/tcg/s390x/Makefile.target b/tests/tcg/s390x/Makefile.target
index 30994dcf9c..04e4bddd83 100644
--- a/tests/tcg/s390x/Makefile.target
+++ b/tests/tcg/s390x/Makefile.target
@@ -45,6 +45,7 @@ TESTS+=clc
 TESTS+=laalg
 TESTS+=add-logical-with-carry
 TESTS+=lae
+TESTS+=cvd
 
 cdsg: CFLAGS+=-pthread
 cdsg: LDFLAGS+=-pthread
-- 
2.43.0