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| author | Ulrich Drepper <drepper@redhat.com> | 2003-02-23 07:20:34 +0000 |
|---|---|---|
| committer | Ulrich Drepper <drepper@redhat.com> | 2003-02-23 07:20:34 +0000 |
| commit | b1b8e747d4c35ff924a0247041e276e1abf2faf7 (patch) | |
| tree | bb62c4834cc8927e10a5407cfeca0cbbc10ca9a7 | |
| parent | 249062b0c2dfeddb342fd13d5cebdcffb7ebcd64 (diff) | |
| download | glibc-b1b8e747d4c35ff924a0247041e276e1abf2faf7.tar.gz glibc-b1b8e747d4c35ff924a0247041e276e1abf2faf7.tar.xz glibc-b1b8e747d4c35ff924a0247041e276e1abf2faf7.zip | |
Update.
* sysdeps/unix/sysv/linux/i386/i486/pthread_barrier_wait.S: Shave off 3 more bytes by using offset-less instructions when possible.
| -rw-r--r-- | nptl/ChangeLog | 3 | ||||
| -rw-r--r-- | nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_barrier_wait.S | 14 |
2 files changed, 16 insertions, 1 deletions
diff --git a/nptl/ChangeLog b/nptl/ChangeLog index 7727fdf267..75158615c0 100644 --- a/nptl/ChangeLog +++ b/nptl/ChangeLog @@ -1,5 +1,8 @@ 2003-02-22 Ulrich Drepper <drepper@redhat.com> + * sysdeps/unix/sysv/linux/i386/i486/pthread_barrier_wait.S: Shave + off 3 more bytes by using offset-less instructions when possible. + * Makefile: Add dependency for $(objpfx)version.d. * eintr.c (eintr_source): Add unnecessary return but the compiler diff --git a/nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_barrier_wait.S b/nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_barrier_wait.S index b77c342a99..7c27b94623 100644 --- a/nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_barrier_wait.S +++ b/nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_barrier_wait.S @@ -1,4 +1,4 @@ -/* Copyright (C) 2002 Free Software Foundation, Inc. +/* Copyright (C) 2002, 2003 Free Software Foundation, Inc. This file is part of the GNU C Library. Contributed by Ulrich Drepper <drepper@redhat.com>, 2002. @@ -59,7 +59,11 @@ pthread_barrier_wait: je 3f /* There are more threads to come. */ +#if CURR_EVENT == 0 + movl (%ebx), %edx +#else movl CURR_EVENT(%ebx), %edx +#endif /* Release the mutex. */ LOCK @@ -75,7 +79,11 @@ pthread_barrier_wait: /* Don't return on spurious wakeups. The syscall does not change any register except %eax so there is no need to reload any of them. */ +#if CURR_EVENT == 0 + cmpl %edx, (%ebx) +#else cmpl %edx, CURR_EVENT(%ebx) +#endif je,pn 8b /* Note: %esi is still zero. */ @@ -88,7 +96,11 @@ pthread_barrier_wait: /* The necessary number of threads arrived. */ 3: movl INIT_COUNT(%ebx), %eax movl %eax, LEFT(%ebx) +#if CURR_EVENT == 0 + incl (%ebx) +#else incl CURR_EVENT(%ebx) +#endif /* Wake up all waiters. The count is a signed number in the kernel so 0x7fffffff is the highest value. */ |