diff options
Diffstat (limited to 'nptl/sysdeps/unix/sysv/linux/i386/i486/sem_post.S')
| -rw-r--r-- | nptl/sysdeps/unix/sysv/linux/i386/i486/sem_post.S | 21 |
1 files changed, 20 insertions, 1 deletions
diff --git a/nptl/sysdeps/unix/sysv/linux/i386/i486/sem_post.S b/nptl/sysdeps/unix/sysv/linux/i386/i486/sem_post.S index 8f656b4e0f..ac045b6e34 100644 --- a/nptl/sysdeps/unix/sysv/linux/i386/i486/sem_post.S +++ b/nptl/sysdeps/unix/sysv/linux/i386/i486/sem_post.S @@ -86,7 +86,26 @@ __new_sem_post: versioned_symbol(libpthread, __new_sem_post, sem_post, GLIBC_2_1) #if SHLIB_COMPAT(libpthread, GLIBC_2_0, GLIBC_2_1) .global __old_sem_post -__old_sem_post = __new_sem_post + .type __old_sem_post,@function +__old_sem_post: + pushl %ebx + + movl 8(%esp), %ebx + LOCK + addl $1, (%ebx) + + movl $SYS_futex, %eax + movl $FUTEX_WAKE, %ecx + movl $1, %edx + ENTER_KERNEL + + testl %eax, %eax + js 1b + + xorl %eax, %eax + popl %ebx + ret + .size __old_sem_post,.-__old_sem_post compat_symbol(libpthread, __old_sem_post, sem_post, GLIBC_2_0) #endif |