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[S390] Inline assembly cleanup.

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Major cleanup of all s390 inline assemblies. They now have a common
coding style. Quite a few have been shortened, mainly by using register
asm variables. Use of the EX_TABLE macro helps  as well. The atomic ops,
bit ops and locking inlines new use the Q-constraint if a newer gcc
is used.  That results in slightly better code.

Thanks to Christian Borntraeger for proof reading the changes.

Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
This commit is contained in:
Martin Schwidefsky
2006-09-28 16:56:43 +02:00
parent 25d83cbfaa
commit 94c12cc7d1
51 changed files with 1758 additions and 2268 deletions
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16
arch/s390/mm/extmem.c
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@@ -142,17 +142,17 @@ dcss_diag (__u8 func, void *parameter,
rx = (unsigned long) parameter;
ry = (unsigned long) func;
__asm__ __volatile__(
asm volatile(
#ifdef CONFIG_64BIT
" sam31\n" // switch to 31 bit
" diag %0,%1,0x64\n"
" sam64\n" // switch back to 64 bit
" sam31\n"
" diag %0,%1,0x64\n"
" sam64\n"
#else
" diag %0,%1,0x64\n"
" diag %0,%1,0x64\n"
#endif
" ipm %2\n"
" srl %2,28\n"
: "+d" (rx), "+d" (ry), "=d" (rc) : : "cc" );
" ipm %2\n"
" srl %2,28\n"
: "+d" (rx), "+d" (ry), "=d" (rc) : : "cc");
*ret1 = rx;
*ret2 = ry;
return rc;