Subversion Repositories openrisc_2011-10-31

        .file   "strcat.S"

        .section .text

        .global  _strcat

        .type    _strcat,@function

_strcat:

        ;; On entry: r1 => Destination

        ;;           r2 => Source

        mov     r1, r4          ; Save a copy of the dest pointer.

        mov     r2, r5          ; Save a copy of the source pointer.

        mov     #0,  r2         ; Search for the NUL byte.

        mov     #-1, r3         ; Limit on the number of bytes examined.

        suntil.b                ; Find the end of the destination string.

        sub     #1,  r1         ; suntil.b leaves r1 pointing to the byte beyond the match.

        mov     #-1, r3         ; Set a limit on the number of bytes copied.

        mov     r5,  r2         ; Restore the source pointer.

        smovu                   ; Copy source to destination

        mov     r4, r1          ; Return the original dest pointer.

        rts