diff options
Diffstat (limited to 'arch/powerpc/boot/string.S')
| -rw-r--r-- | arch/powerpc/boot/string.S | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/arch/powerpc/boot/string.S b/arch/powerpc/boot/string.S index ac3d43b6a32..643e4cb2f11 100644 --- a/arch/powerpc/boot/string.S +++ b/arch/powerpc/boot/string.S @@ -49,6 +49,17 @@ strcat: bne 1b blr + .globl strchr +strchr: + addi r3,r3,-1 +1: lbzu r0,1(r3) + cmpw 0,r0,r4 + beqlr + cmpwi 0,r0,0 + bne 1b + li r3,0 + blr + .globl strcmp strcmp: addi r5,r3,-1 @@ -61,6 +72,19 @@ strcmp: beq 1b blr + .globl strncmp +strncmp: + 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 + .globl strlen strlen: addi r4,r3,-1 @@ -195,6 +219,19 @@ backwards_memcpy: mtctr r7 b 1b + .globl memchr +memchr: + cmpwi 0,r5,0 + blelr + mtctr r5 + addi r3,r3,-1 +1: lbzu r0,1(r3) + cmpw r0,r4 + beqlr + bdnz 1b + li r3,0 + blr + .globl memcmp memcmp: cmpwi 0,r5,0 |