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arc: Fix strcmp for big endian without barrel shifter

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strcmp.S contained invalid guard for code that used barrel-shifter optional
instruction - it was checking for !ARC601 instead of whether barrel shifter
is present. While it is true that ARC601 doesn't have barrel shifter, so
does some other ARC EM configurations.

2016-07-21  Anton Kolesov  <Anton.Kolesov@synopsys.com>

	* libc/machine/arc/strcmp.S: Fix big endian without barrel shifter.

Signed-off-by: Anton Kolesov <Anton.Kolesov@synopsys.com>
This commit is contained in:
Anton Kolesov 2016-07-21 13:19:34 +03:00 committed by Corinna Vinschen
parent 1baa8bb843
commit 668033eb9f
1 changed files with 3 additions and 3 deletions
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6
newlib/libc/machine/arc/strcmp.S
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@ -97,7 +97,7 @@ ENTRY (strcmp)
when bit 7 is cleared. */ when bit 7 is cleared. */
.balign 4 .balign 4
.Lfound0: .Lfound0:
#ifndef __ARC601__ #ifdef __ARC_BARREL_SHIFTER__
lsr r0,r4,8 lsr r0,r4,8
lsr_s r1,r2 lsr_s r1,r2
bic_s r2,r2,r0 ; get low estimate for r2 and get ... bic_s r2,r2,r0 ; get low estimate for r2 and get ...
@ -110,11 +110,11 @@ ENTRY (strcmp)
cmp_s r2,r3 cmp_s r2,r3
j_s.d [blink] j_s.d [blink]
bset.lo r0,r0,31 bset.lo r0,r0,31
#else /* __ARC601__ */ #else /* __ARC_BARREL_SHIFTER__ */
/* Fall through to .Lcharloop. */ /* Fall through to .Lcharloop. */
sub_s r0,r0,4 sub_s r0,r0,4
sub_s r1,r1,4 sub_s r1,r1,4
#endif /* __ARC601__ */ #endif /* __ARC_BARREL_SHIFTER__ */
#endif /* ENDIAN */ #endif /* ENDIAN */
.balign 4 .balign 4