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s390/ioasm: use symbolic names for asm operands 

Change remaining inline assemblies to also use symbolic names for
operands, use "Q" constraint when possible, and use "+" modifier so
that an operand needs to be specified only once.

Acked-by: Peter Oberparleiter <oberpar@linux.ibm.com>
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 2021-06-22 14:50:27 +02:00 committed by Vasily Gorbik
parent b94bcca283
commit 7496209a89
1 changed files with 15 additions and 15 deletions
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30
drivers/s390/cio/ioasm.c
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@ -158,11 +158,11 @@ int tpi(struct tpi_info *addr)
int ccode;
asm volatile(
" tpi 0(%2)\n"
" ipm %0\n"
" srl %0,28"
: "=d" (ccode), "=m" (*addr)
: "a" (addr)
" tpi %[addr]\n"
" ipm %[cc]\n"
" srl %[cc],28"
: [cc] "=&d" (ccode), [addr] "=Q" (*addr)
:
: "cc");
trace_s390_cio_tpi(addr, ccode);
@ -175,13 +175,13 @@ int chsc(void *chsc_area)
int cc = -EIO;
asm volatile(
" .insn rre,0xb25f0000,%2,0\n"
"0: ipm %0\n"
" srl %0,28\n"
" .insn rre,0xb25f0000,%[chsc_area],0\n"
"0: ipm %[cc]\n"
" srl %[cc],28\n"
"1:\n"
EX_TABLE(0b, 1b)
: "+d" (cc), "=m" (*(addr_type *) chsc_area)
: "d" (chsc_area), "m" (*(addr_type *) chsc_area)
: [cc] "+&d" (cc), "+m" (*(addr_type *)chsc_area)
: [chsc_area] "d" (chsc_area)
: "cc");
trace_s390_cio_chsc(chsc_area, cc);
@ -273,11 +273,11 @@ static inline int __stcrw(struct crw *crw)
int ccode;
asm volatile(
" stcrw 0(%2)\n"
" ipm %0\n"
" srl %0,28\n"
: "=d" (ccode), "=m" (*crw)
: "a" (crw)
" stcrw %[crw]\n"
" ipm %[cc]\n"
" srl %[cc],28\n"
: [cc] "=&d" (ccode), [crw] "=Q" (*crw)
:
: "cc");
return ccode;
}