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[/] [or1k/] [trunk/] [newlib/] [newlib/] [libc/] [machine/] [sh/] [strcmp.S] - Blame information for rev 1765

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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

Line No.	Rev	Author	Line
1	56	joel	`! Entry: r4: destination`
2			`! r5: source`
3			`! Exit: r0: result`
4			`! r1-r2,r4-r5: clobbered`
5
6			`#include "asm.h"`
7
8			`ENTRY(strcmp)`
9			`mov r4,r0`
10			`or r5,r0`
11			`tst #3,r0`
12			`bf L_setup_char_loop`
13			`mov #0,r0`
14			`#ifdef DELAYED_BRANCHES`
15			`mov.l @r4+,r1`
16			`.align 2`
17			`Longword_loop:`
18			`mov.l @r5+,r2`
19			`cmp/str r0,r1`
20			`bt Longword_loop_end`
21			`cmp/eq r1,r2`
22			`bt.s Longword_loop`
23			`mov.l @r4+,r1`
24			`add #-4, r4`
25			`Longword_loop_end:`
26			`add #-4, r4`
27			`add #-4, r5`
28			`L_setup_char_loop:`
29			`mov.b @r4+,r0`
30			`.align 2`
31			`L_char_loop:`
32			`mov.b @r5+,r1`
33			`tst r0,r0`
34			`bt L_return`
35			`cmp/eq r0,r1`
36			`bt.s L_char_loop`
37			`mov.b @r4+,r0`
38			`add #-2,r4`
39			`mov.b @r4,r0`
40			`#else /* ! DELAYED_BRANCHES */`
41			`.align 2`
42			`Longword_loop:`
43			`mov.l @r4+,r1`
44			`mov.l @r5+,r2`
45			`cmp/str r0,r1`
46			`bt Longword_loop_end`
47			`cmp/eq r1,r2`
48			`bt Longword_loop`
49			`Longword_loop_end:`
50			`add #-4, r4`
51			`add #-4, r5`
52			`.align 2`
53			`L_setup_char_loop:`
54			`L_char_loop:`
55			`mov.b @r4+,r0`
56			`mov.b @r5+,r1`
57			`tst r0,r0`
58			`bt L_return`
59			`cmp/eq r0,r1`
60			`bt L_char_loop`
61			`#endif`
62			`L_return:`
63			`extu.b r0,r0`
64			`extu.b r1,r1`
65			`rts`
66			`sub r1,r0`

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[/] [or1k/] [trunk/] [newlib/] [newlib/] [libc/] [machine/] [sh/] [strcmp.S] - Blame information for rev 1765