#include <asm/ppc_asm.h>

_GLOBAL(copy_tofrom_user_reference)
        cmpdi   r5,0
        beq     4f

        mtctr   r5

1:      lbz     r6,0(r4)
2:      stb     r6,0(r3)
        addi    r3,r3,1
        addi    r4,r4,1
        bdnz    1b

3:      mfctr   r3
        blr

4:      mr      r3,r5
        blr

.section __ex_table,"a"
        .llong  1b,3b
        .llong  2b,3b
.text