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tests/tcg/s390x: Test SET CLOCK COMPARATOR

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Add a small test to prevent regressions.

Cc: qemu-stable@nongnu.org
Reviewed-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com>
Message-ID: <20251016175954.41153-5-iii@linux.ibm.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
This commit is contained in:
Ilya Leoshkevich
2025-10-16 19:58:33 +02:00
committed by Thomas Huth
parent fc976a67de
commit 0408c61e27
2 changed files with 64 additions and 0 deletions
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tests/tcg/s390x/Makefile.softmmu-target
+1
View File
@@ -28,6 +28,7 @@ ASM_TESTS = \
mc \
per \
precise-smc-softmmu \
sckc \
ssm-early \
stosm-early \
stpq \
tests/tcg/s390x/sckc.S
+63
View File
@@ -0,0 +1,63 @@
/*
* Test clock comparator.
*
* SPDX-License-Identifier: GPL-2.0-or-later
*/
.org 0x130
ext_old_psw:
.org 0x1b0
ext_new_psw:
.quad 0x180000000, _ext /* 64-bit mode */
.org 0x1d0
pgm_new_psw:
.quad 0x2000000000000,0 /* disabled wait */
.org 0x200 /* lowcore padding */
.globl _start
_start:
lpswe start31_psw
_start31:
stctg %c0,%c0,c0
oi c0+6,8 /* set clock-comparator subclass mask */
lctlg %c0,%c0,c0
0:
brasl %r14,_f /* %r14's most significant bit is 1 */
jg 0b
_f:
br %r14 /* it must not end up in ext_old_psw */
_ext:
stg %r0,ext_saved_r0
lg %r0,ext_counter
aghi %r0,1
stg %r0,ext_counter
cgfi %r0,0x1000
jnz 0f
lpswe success_psw
0:
stck clock
lg %r0,clock
agfi %r0,0x40000 /* 64us * 0x1000 =~ 0.25s */
stg %r0,clock
sckc clock
lg %r0,ext_saved_r0
lpswe ext_old_psw
.align 8
start31_psw:
.quad 0x100000080000000,_start31 /* EX, 31-bit mode */
success_psw:
.quad 0x2000000000000,0xfff /* see is_special_wait_psw() */
c0:
.skip 8
clock:
.quad 0
ext_counter:
.quad 0
ext_saved_r0:
.skip 8