tests/tcg/s390x: Test LAALG with negative cc_src

Add a small test to prevent regressions.

Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-ID: <20231106093605.1349201-5-iii@linux.ibm.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
(cherry picked from commit ebc14107f1)
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
This commit is contained in:
Ilya Leoshkevich 2023-11-06 10:31:25 +01:00 committed by Michael Tokarev
parent a16eec9fb2
commit 097c347136
2 changed files with 28 additions and 0 deletions

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@ -42,6 +42,7 @@ TESTS+=mdeb
TESTS+=cgebra
TESTS+=clgebr
TESTS+=clc
TESTS+=laalg
cdsg: CFLAGS+=-pthread
cdsg: LDFLAGS+=-pthread

27
tests/tcg/s390x/laalg.c Normal file
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@ -0,0 +1,27 @@
/*
* Test the LAALG instruction.
*
* SPDX-License-Identifier: GPL-2.0-or-later
*/
#include <assert.h>
#include <stdlib.h>
int main(void)
{
unsigned long cc = 0, op1, op2 = 40, op3 = 2;
asm("slgfi %[cc],1\n" /* Set cc_src = -1. */
"laalg %[op1],%[op3],%[op2]\n"
"ipm %[cc]"
: [cc] "+r" (cc)
, [op1] "=r" (op1)
, [op2] "+T" (op2)
: [op3] "r" (op3)
: "cc");
assert(cc == 0xffffffff10ffffff);
assert(op1 == 40);
assert(op2 == 42);
return EXIT_SUCCESS;
}