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tests/tcg/s390x: Test unaligned accesses to lowcore 

Add a small test to avoid regressions.

Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com>
Acked-by: Richard Henderson <richard.henderson@linaro.org>
Acked-by: Thomas Huth <thuth@redhat.com>
Message-Id: <20220725223746.227063-3-iii@linux.ibm.com>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
This commit is contained in:
Ilya Leoshkevich 2022-07-26 00:37:46 +02:00 committed by Alex Bennée
parent 0882caf4d6
commit 503e549e44
2 changed files with 28 additions and 0 deletions
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9
tests/tcg/s390x/Makefile.softmmu-target Normal file
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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

19
tests/tcg/s390x/unaligned-lowcore.S Normal file
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@ -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