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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 10:15:39 +00:00
parent b80af23ac6
commit f1847a8465
4 changed files with 24 additions and 3 deletions
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5
ChangeLog
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@ -1,3 +1,8 @@
2004-06-11 Roland McGrath <roland@redhat.com>
* sysdeps/arm/strlen.S [__ARMEB__]: Compute correctly for big-endian.
From Krzysztof Halasa <khc@pm.waw.pl>.
2004-06-10 Jakub Jelinek <jakub@redhat.com>
* elf/tls-macros.h [__s390x__] (TLS_LD, TLS_GD): Clobber also r14.

7
nptl/ChangeLog
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@ -1,3 +1,10 @@
2004-06-11 Martin Schwidefsky <schwidefsky@de.ibm.com>
* sysdeps/unix/sysv/linux/s390/lowlevellock.h (lll_compare_and_swap):
Add memory clobber to inline assembly.
(__lll_mutex_trylock): Likewise.
(__lll_mutex_cond_trylock): Likewise.
2004-06-07 Martin Schwidefsky <schwidefsky@de.ibm.com>
* sysdeps/unix/sysv/linux/s390/lowlevellock.h (lll_futex_requeue):

6
nptl/sysdeps/unix/sysv/linux/s390/lowlevellock.h
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@ -112,7 +112,7 @@
" jl 0b\n" \
"1:" \
: "=Q" (*__futex), "=&d" (oldval), "=&d" (newval) \
: "m" (*__futex) : "cc" ); \
: "m" (*__futex) : "cc", "memory" ); \
} while (0)
@ -124,7 +124,7 @@ __lll_mutex_trylock (int *futex)
__asm __volatile ("cs %0,%3,%1"
: "=d" (old), "=Q" (*futex)
: "0" (0), "d" (1), "m" (*futex) : "cc" );
: "0" (0), "d" (1), "m" (*futex) : "cc", "memory" );
return old != 0;
}
#define lll_mutex_trylock(futex) __lll_mutex_trylock (&(futex))
@ -138,7 +138,7 @@ __lll_mutex_cond_trylock (int *futex)
__asm __volatile ("cs %0,%3,%1"
: "=d" (old), "=Q" (*futex)
: "0" (0), "d" (2), "m" (*futex) : "cc" );
: "0" (0), "d" (2), "m" (*futex) : "cc", "memory" );
return old != 0;
}
#define lll_mutex_cond_trylock(futex) __lll_mutex_cond_trylock (&(futex))

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)