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s390/sysinfo: get rid of register asm

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Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
This commit is contained in:
Heiko Carstens 2021-06-14 19:54:42 +02:00 committed by Vasily Gorbik
parent 53c1c2504b
commit 5fe29839de
1 changed files with 11 additions and 8 deletions
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19
arch/s390/kernel/sysinfo.c
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@ -25,19 +25,22 @@ int topology_max_mnest;
static inline int __stsi(void *sysinfo, int fc, int sel1, int sel2, int *lvl)
{
register int r0 asm("0") = (fc << 28) | sel1;
register int r1 asm("1") = sel2;
int r0 = (fc << 28) | sel1;
int rc = 0;
asm volatile(
" stsi 0(%3)\n"
" lr 0,%[r0]\n"
" lr 1,%[r1]\n"
" stsi 0(%[sysinfo])\n"
"0: jz 2f\n"
"1: lhi %1,%4\n"
"2:\n"
"1: lhi %[rc],%[retval]\n"
"2: lr %[r0],0\n"
EX_TABLE(0b, 1b)
: "+d" (r0), "+d" (rc)
: "d" (r1), "a" (sysinfo), "K" (-EOPNOTSUPP)
: "cc", "memory");
: [r0] "+d" (r0), [rc] "+d" (rc)
: [r1] "d" (sel2),
[sysinfo] "a" (sysinfo),
[retval] "K" (-EOPNOTSUPP)
: "cc", "0", "1", "memory");
*lvl = ((unsigned int) r0) >> 28;
return rc;
}