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[PARISC] use less assembler statements in syscall path 

Signed-off-by: Helge Deller <deller@gmx.de>
Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
This commit is contained in:
Helge Deller 2007-01-09 19:57:38 +01:00 committed by Kyle McMartin
parent 4650f0a583
commit 3fe4c55ebc
1 changed files with 5 additions and 8 deletions
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13
arch/parisc/kernel/entry.S
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@ -983,7 +983,7 @@ intr_check_sig:
/* As above */ /* As above */
mfctl %cr30,%r1 mfctl %cr30,%r1
LDREG TI_FLAGS(%r1),%r19 LDREG TI_FLAGS(%r1),%r19
load32 (_TIF_SIGPENDING|_TIF_RESTORE_SIGMASK), %r20 ldi (_TIF_SIGPENDING|_TIF_RESTORE_SIGMASK), %r20
and,COND(<>) %r19, %r20, %r0 and,COND(<>) %r19, %r20, %r0
b,n intr_restore /* skip past if we've nothing to do */ b,n intr_restore /* skip past if we've nothing to do */
@ -995,11 +995,9 @@ intr_check_sig:
* Only do signals if we are returning to user space * Only do signals if we are returning to user space
*/ */
LDREG PT_IASQ0(%r16), %r20 LDREG PT_IASQ0(%r16), %r20
CMPIB= 0,%r20,intr_restore /* backward */ CMPIB=,n 0,%r20,intr_restore /* backward */
nop
LDREG PT_IASQ1(%r16), %r20 LDREG PT_IASQ1(%r16), %r20
CMPIB= 0,%r20,intr_restore /* backward */ CMPIB=,n 0,%r20,intr_restore /* backward */
nop
copy %r0, %r25 /* long in_syscall = 0 */ copy %r0, %r25 /* long in_syscall = 0 */
#ifdef CONFIG_64BIT #ifdef CONFIG_64BIT
@ -1009,8 +1007,7 @@ intr_check_sig:
BL do_notify_resume,%r2 BL do_notify_resume,%r2
copy %r16, %r26 /* struct pt_regs *regs */ copy %r16, %r26 /* struct pt_regs *regs */
b intr_check_sig b,n intr_check_sig
nop
intr_restore: intr_restore:
copy %r16,%r29 copy %r16,%r29
@ -2091,7 +2088,7 @@ syscall_check_resched:
.import do_signal,code .import do_signal,code
syscall_check_sig: syscall_check_sig:
LDREG TI_FLAGS-THREAD_SZ_ALGN-FRAME_SIZE(%r30),%r19 LDREG TI_FLAGS-THREAD_SZ_ALGN-FRAME_SIZE(%r30),%r19
load32 (_TIF_SIGPENDING|_TIF_RESTORE_SIGMASK), %r26 ldi (_TIF_SIGPENDING|_TIF_RESTORE_SIGMASK), %r26
and,COND(<>) %r19, %r26, %r0 and,COND(<>) %r19, %r26, %r0
b,n syscall_restore /* skip past if we've nothing to do */ b,n syscall_restore /* skip past if we've nothing to do */