[PATCH 2/2] [PPC] Add strncmp to arch/ppc

[Grant Likely]

On Mon, Apr 21, 2008 at 6:50 PM, Josh Boyer <jwboyer at linux.vnet.ibm.com> wrote:
> Commit 0119536cd314ef95553604208c25bc35581f7f0a 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 at linux.vnet.ibm.com>

Acked-by: Grant Likely <grant.likely at secretlab.ca>

>
>  ---
>   arch/ppc/kernel/ppc_ksyms.c |    1 +
>   arch/ppc/lib/string.S       |   14 ++++++++++++++
>   2 files changed, 15 insertions(+)
>
>  --- linux-2.6.orig/arch/ppc/kernel/ppc_ksyms.c
>  +++ linux-2.6/arch/ppc/kernel/ppc_ksyms.c
>  @@ -89,6 +89,7 @@ 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);
>  --- linux-2.6.orig/arch/ppc/lib/string.S
>  +++ linux-2.6/arch/ppc/lib/string.S
>  @@ -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)
>
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>



-- 
Grant Likely, B.Sc., P.Eng.
Secret Lab Technologies Ltd.