On 15/03/2022 12.20, Thomas Huth wrote:
From: Ilya Leoshkevich <i...@linux.ibm.com>
Add a small test in order to prevent regressions.
Signed-off-by: Ilya Leoshkevich <i...@linux.ibm.com>
Message-Id: <20220314104232.675863-4-...@linux.ibm.com>
Reviewed-by: Richard Henderson <richard.hender...@linaro.org>
Reviewed-by: David Hildenbrand <da...@redhat.com>
Signed-off-by: Thomas Huth <th...@redhat.com>
---
tests/tcg/s390x/Makefile.target | 1 +
tests/tcg/s390x/branch-relative-long.c | 68 ++++++++++++++++++++++++++
2 files changed, 69 insertions(+)
create mode 100644 tests/tcg/s390x/branch-relative-long.c
diff --git a/tests/tcg/s390x/Makefile.target b/tests/tcg/s390x/Makefile.target
index 7aa502a557..f0d474a245 100644
--- a/tests/tcg/s390x/Makefile.target
+++ b/tests/tcg/s390x/Makefile.target
@@ -15,6 +15,7 @@ TESTS+=mvc
TESTS+=shift
TESTS+=trap
TESTS+=signals-s390x
+TESTS+=branch-relative-long
ifneq ($(HAVE_GDB_BIN),)
GDB_SCRIPT=$(SRC_PATH)/tests/guest-debug/run-test.py
diff --git a/tests/tcg/s390x/branch-relative-long.c
b/tests/tcg/s390x/branch-relative-long.c
new file mode 100644
index 0000000000..94219afcad
--- /dev/null
+++ b/tests/tcg/s390x/branch-relative-long.c
@@ -0,0 +1,68 @@
+#include <stddef.h>
+#include <stdio.h>
+#include <string.h>
+#include <sys/mman.h>
+
+#define DEFINE_ASM(_name, _code) \
+ extern const char _name[]; \
+ extern const char _name ## _end[]; \
+ asm(" .globl " #_name "\n" \
+ #_name ":\n" \
+ " " _code "\n" \
+ " .globl " #_name "_end\n" \
+ #_name "_end:\n");
+
+DEFINE_ASM(br_r14, "br %r14");
+DEFINE_ASM(brasl_r0, "brasl %r0,.-0x100000000");
+DEFINE_ASM(brcl_0xf, "brcl 0xf,.-0x100000000");
Hi Ilya,
I just noticed that this does not compile with Clang
(version 13.0.1):
<inline asm>:8:15: error: offset out of range
brasl %r0,.-0x100000000
^
<inline asm>:13:14: error: offset out of range
brcl 0xf,.-0x100000000
^
2 errors generated.
Any ideas how to fix this? Could we decrease the offset a little bit? Or
maybe detect Clang and run with -no-integrated-as in that case?
Thomas
