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2004-06-11 Roland McGrath <roland@redhat.com>

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* sysdeps/arm/strlen.S [__ARMEB__]: Compute correctly for big-endian.
	From Krzysztof Halasa <khc@pm.waw.pl>.
This commit is contained in:
Roland McGrath 2004-06-11 10:15:34 +00:00
parent 64d5339733
commit 482f870081
1 changed files with 9 additions and 0 deletions
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9
sysdeps/arm/strlen.S
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@ -53,12 +53,21 @@ Laligned: @ here, we have a word in r2. Does it
ldrne r2, [r1], $4 @ and we continue to the next word
bne Laligned @
Llastword: @ drop through to here once we find a
#ifdef __ARMEB__
tst r2, $0xff000000 @ word that has a zero byte in it
addne r0, r0, $1 @
tstne r2, $0x00ff0000 @ and add up to 3 bytes on to it
addne r0, r0, $1 @
tstne r2, $0x0000ff00 @ (if first three all non-zero, 4th
addne r0, r0, $1 @ must be zero)
#else
tst r2, $0x000000ff @ word that has a zero byte in it
addne r0, r0, $1 @
tstne r2, $0x0000ff00 @ and add up to 3 bytes on to it
addne r0, r0, $1 @
tstne r2, $0x00ff0000 @ (if first three all non-zero, 4th
addne r0, r0, $1 @ must be zero)
#endif
RETINSTR(mov,pc,lr)
END(strlen)
libc_hidden_builtin_def (strlen)