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! Entry: r4: destination
!        r5: source
! Exit:  r0: result
!        r1-r2,r4-r5: clobbered

#include "asm.h"

ENTRY(strcmp)
        mov     r4,r0
        or      r5,r0
        tst     #3,r0
        bf      L_setup_char_loop
        mov     #0,r0
#ifdef DELAYED_BRANCHES
        mov.l   @r4+,r1
        .align  2
Longword_loop:
        mov.l   @r5+,r2
        cmp/str r0,r1
        bt      Longword_loop_end
        cmp/eq  r1,r2
        bt.s    Longword_loop
        mov.l   @r4+,r1
        add #-4, r4
Longword_loop_end:
        add #-4, r4
        add #-4, r5
L_setup_char_loop:
        mov.b   @r4+,r0
        .align  2
L_char_loop:
        mov.b   @r5+,r1
        tst     r0,r0
        bt      L_return
        cmp/eq  r0,r1
        bt.s L_char_loop
        mov.b   @r4+,r0
        add     #-2,r4
        mov.b   @r4,r0
#else /* ! DELAYED_BRANCHES */
        .align  2
Longword_loop:
        mov.l   @r4+,r1
        mov.l   @r5+,r2
        cmp/str r0,r1
        bt      Longword_loop_end
        cmp/eq  r1,r2
        bt      Longword_loop
Longword_loop_end:
        add #-4, r4
        add #-4, r5
        .align  2
L_setup_char_loop:
L_char_loop:
        mov.b   @r4+,r0
        mov.b   @r5+,r1
        tst     r0,r0
        bt      L_return
        cmp/eq  r0,r1
        bt L_char_loop
#endif
L_return:
        extu.b  r0,r0
        extu.b  r1,r1
        rts
        sub     r1,r0