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| author | Roland McGrath <roland@gnu.org> | 2004-06-11 10:15:39 +0000 |
|---|---|---|
| committer | Roland McGrath <roland@gnu.org> | 2004-06-11 10:15:39 +0000 |
| commit | f1847a84656ed3f8432d1c6d7c804e07b7caa84b (patch) | |
| tree | e9e8662665fce7ee6f5a5865f167935425210304 /sysdeps/arm/strlen.S | |
| parent | b80af23ac6973e69df6cd23d221fa44fffb21e17 (diff) | |
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* sysdeps/arm/strlen.S [__ARMEB__]: Compute correctly for big-endian.
From Krzysztof Halasa <khc@pm.waw.pl>.
Diffstat (limited to 'sysdeps/arm/strlen.S')
| -rw-r--r-- | sysdeps/arm/strlen.S | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/sysdeps/arm/strlen.S b/sysdeps/arm/strlen.S index f29528ada2..a83c41d26a 100644 --- a/sysdeps/arm/strlen.S +++ b/sysdeps/arm/strlen.S @@ -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) |