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[PULL 05/12] tests/tcg: Test overflow conditions
From: |
Thomas Huth |
Subject: |
[PULL 05/12] tests/tcg: Test overflow conditions |
Date: |
Fri, 3 Jun 2022 08:58:58 +0200 |
From: Gautam Agrawal <gautamnagrawal@gmail.com>
Add a test to check for overflow conditions in s390x.
This patch is based on the following patches :
* https://git.qemu.org/?p=qemu.git;a=commitdiff;h=5a2e67a691501
* https://git.qemu.org/?p=qemu.git;a=commitdiff;h=fc6e0d0f2db51
Signed-off-by: Gautam Agrawal <gautamnagrawal@gmail.com>
Message-Id: <20220531183524.40948-1-gautamnagrawal@gmail.com>
[thuth: Move overflow.c to tests/tcg/multiarch/ to make it generic]
Signed-off-by: Thomas Huth <thuth@redhat.com>
---
tests/tcg/multiarch/overflow.c | 58 ++++++++++++++++++++++++++++++++++
1 file changed, 58 insertions(+)
create mode 100644 tests/tcg/multiarch/overflow.c
diff --git a/tests/tcg/multiarch/overflow.c b/tests/tcg/multiarch/overflow.c
new file mode 100644
index 0000000000..1c59c2cb70
--- /dev/null
+++ b/tests/tcg/multiarch/overflow.c
@@ -0,0 +1,58 @@
+#include <stdio.h>
+
+int overflow_add_32(int x, int y)
+{
+ int res;
+ return __builtin_add_overflow(x, y, &res);
+}
+
+int overflow_add_64(long long x, long long y)
+{
+ long long res;
+ return __builtin_add_overflow(x, y, &res);
+}
+
+int overflow_sub_32(int x, int y)
+{
+ int res;
+ return __builtin_sub_overflow(x, y, &res);
+}
+
+int overflow_sub_64(long long x, long long y)
+{
+ long long res;
+ return __builtin_sub_overflow(x, y, &res);
+}
+
+int a1_add = -2147483648;
+int b1_add = -2147483648;
+long long a2_add = -9223372036854775808ULL;
+long long b2_add = -9223372036854775808ULL;
+
+int a1_sub;
+int b1_sub = -2147483648;
+long long a2_sub = 0L;
+long long b2_sub = -9223372036854775808ULL;
+
+int main()
+{
+ int ret = 0;
+
+ if (!overflow_add_32(a1_add, b1_add)) {
+ fprintf(stderr, "data overflow while adding 32 bits\n");
+ ret = 1;
+ }
+ if (!overflow_add_64(a2_add, b2_add)) {
+ fprintf(stderr, "data overflow while adding 64 bits\n");
+ ret = 1;
+ }
+ if (!overflow_sub_32(a1_sub, b1_sub)) {
+ fprintf(stderr, "data overflow while subtracting 32 bits\n");
+ ret = 1;
+ }
+ if (!overflow_sub_64(a2_sub, b2_sub)) {
+ fprintf(stderr, "data overflow while subtracting 64 bits\n");
+ ret = 1;
+ }
+ return ret;
+}
--
2.31.1
- [PULL 00/12] s390x and misc patches, Thomas Huth, 2022/06/03
- [PULL 01/12] s390: Typo fix FLOATING_POINT_SUPPPORT_ENH, Thomas Huth, 2022/06/03
- [PULL 03/12] target/s390x: kvm: Honor storage keys during emulation, Thomas Huth, 2022/06/03
- [PULL 12/12] ui: Remove deprecated options "-sdl" and "-curses", Thomas Huth, 2022/06/03
- [PULL 02/12] hw/s390x/s390-virtio-ccw: Improve the machine description string, Thomas Huth, 2022/06/03
- [PULL 05/12] tests/tcg: Test overflow conditions,
Thomas Huth <=
- [PULL 07/12] MAINTAINERS: Update maintainers for Guest x86 HAXM CPUs, Thomas Huth, 2022/06/03
- [PULL 04/12] MAINTAINERS: Update s390 vhost entries, Thomas Huth, 2022/06/03
- [PULL 06/12] MAINTAINERS: Change my email address, Thomas Huth, 2022/06/03
- [PULL 09/12] tests/qtest: use g_autofree for test_server_create_chr, Thomas Huth, 2022/06/03
- [PULL 10/12] ui: Remove deprecated parameters of the "-display sdl" option, Thomas Huth, 2022/06/03
- [PULL 08/12] qtest/npcm7xx_pwm-test: Fix memory leak in mft_qom_set, Thomas Huth, 2022/06/03
- [PULL 11/12] ui: Switch "-display sdl" to use the QAPI parser, Thomas Huth, 2022/06/03
- Re: [PULL 00/12] s390x and misc patches, Richard Henderson, 2022/06/03