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[POWERPC] Add strncmp to arch/ppc 

Commit 0119536cd3 added an assembly
version of strncmp to PowerPC.  However, it changed a common header
file between arch/ppc and arch/powerpc without adding strncmp to
arch/ppc.  This fixes that omission so that arch/ppc links again.

Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
This commit is contained in:
Josh Boyer 2008-04-22 10:50:27 +10:00 committed by Paul Mackerras
parent e91d7119ba
commit 96f1bb8a41
2 changed files with 15 additions and 0 deletions
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1
arch/ppc/kernel/ppc_ksyms.c
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@ -88,6 +88,7 @@ EXPORT_SYMBOL(strncpy);
EXPORT_SYMBOL(strcat);
EXPORT_SYMBOL(strlen);
EXPORT_SYMBOL(strcmp);
EXPORT_SYMBOL(strncmp);
EXPORT_SYMBOL(csum_partial);
EXPORT_SYMBOL(csum_partial_copy_generic);

14
arch/ppc/lib/string.S
View File

@ -121,6 +121,20 @@ _GLOBAL(strcmp)
beq 1b
blr
_GLOBAL(strncmp)
PPC_LCMPI r5,0
beqlr
mtctr r5
addi r5,r3,-1
addi r4,r4,-1
1: lbzu r3,1(r5)
cmpwi 1,r3,0
lbzu r0,1(r4)
subf. r3,r0,r3
beqlr 1
bdnzt eq,1b
blr
_GLOBAL(strlen)
addi r4,r3,-1
1: lbzu r0,1(r4)