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[PATCH v2 2/2] tests/tcg/s390x: Test unaligned accesses to lowcore
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From: |
Ilya Leoshkevich |
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Subject: |
[PATCH v2 2/2] tests/tcg/s390x: Test unaligned accesses to lowcore |
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Date: |
Sat, 23 Jul 2022 01:36:14 +0200 |
Add a small test to avoid regressions.
Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com>
---
tests/tcg/s390x/Makefile.softmmu-target | 9 +++++++++
tests/tcg/s390x/unaligned-lowcore.S | 19 +++++++++++++++++++
2 files changed, 28 insertions(+)
create mode 100644 tests/tcg/s390x/Makefile.softmmu-target
create mode 100644 tests/tcg/s390x/unaligned-lowcore.S
diff --git a/tests/tcg/s390x/Makefile.softmmu-target
b/tests/tcg/s390x/Makefile.softmmu-target
new file mode 100644
index 0000000000..a34fa68473
--- /dev/null
+++ b/tests/tcg/s390x/Makefile.softmmu-target
@@ -0,0 +1,9 @@
+S390X_SRC=$(SRC_PATH)/tests/tcg/s390x
+VPATH+=$(S390X_SRC)
+QEMU_OPTS=-action panic=exit-failure -kernel
+
+%: %.S
+ $(CC) -march=z13 -m64 -nostartfiles -static -Wl,-Ttext=0 \
+ -Wl,--build-id=none $< -o $@
+
+TESTS += unaligned-lowcore
diff --git a/tests/tcg/s390x/unaligned-lowcore.S
b/tests/tcg/s390x/unaligned-lowcore.S
new file mode 100644
index 0000000000..246b517f11
--- /dev/null
+++ b/tests/tcg/s390x/unaligned-lowcore.S
@@ -0,0 +1,19 @@
+ .org 0x1D0 /* program new PSW */
+ .quad 0x2000000000000, 0 /* disabled wait */
+ .org 0x200 /* lowcore padding */
+
+ .globl _start
+_start:
+ lctlg %c0,%c0,_c0
+ vst %v0,_unaligned
+ lpswe quiesce_psw
+
+ .align 8
+quiesce_psw:
+ .quad 0x2000000000000,0xfff /* see is_special_wait_psw() */
+_c0:
+ .quad 0x10060000 /* lowcore protection, AFP, VX */
+
+ .byte 0
+_unaligned:
+ .octa 0
--
2.35.3