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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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41
arch/s390/mm/init.c
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@@ -45,26 +45,17 @@ void diag10(unsigned long addr)
{
if (addr >= 0x7ff00000)
return;
asm volatile(
#ifdef CONFIG_64BIT
asm volatile (
" sam31\n"
" diag %0,%0,0x10\n"
"0: sam64\n"
".section __ex_table,\"a\"\n"
" .align 8\n"
" .quad 0b, 0b\n"
".previous\n"
: : "a" (addr));
" sam31\n"
" diag %0,%0,0x10\n"
"0: sam64\n"
#else
asm volatile (
" diag %0,%0,0x10\n"
" diag %0,%0,0x10\n"
"0:\n"
".section __ex_table,\"a\"\n"
" .align 4\n"
" .long 0b, 0b\n"
".previous\n"
: : "a" (addr));
#endif
EX_TABLE(0b,0b)
: : "a" (addr));
}
void show_mem(void)
@@ -156,11 +147,10 @@ void __init paging_init(void)
S390_lowcore.kernel_asce = pgdir_k;
/* enable virtual mapping in kernel mode */
__asm__ __volatile__(" LCTL 1,1,%0\n"
" LCTL 7,7,%0\n"
" LCTL 13,13,%0\n"
" SSM %1"
: : "m" (pgdir_k), "m" (ssm_mask));
__ctl_load(pgdir_k, 1, 1);
__ctl_load(pgdir_k, 7, 7);
__ctl_load(pgdir_k, 13, 13);
__raw_local_irq_ssm(ssm_mask);
local_flush_tlb();
return;
@@ -241,11 +231,10 @@ void __init paging_init(void)
S390_lowcore.kernel_asce = pgdir_k;
/* enable virtual mapping in kernel mode */
__asm__ __volatile__("lctlg 1,1,%0\n\t"
"lctlg 7,7,%0\n\t"
"lctlg 13,13,%0\n\t"
"ssm %1"
: :"m" (pgdir_k), "m" (ssm_mask));
__ctl_load(pgdir_k, 1, 1);
__ctl_load(pgdir_k, 7, 7);
__ctl_load(pgdir_k, 13, 13);
__raw_local_irq_ssm(ssm_mask);
local_flush_tlb();