diff options
Diffstat (limited to 'libc/nptl/sysdeps/unix/sysv/linux/x86_64/sem_timedwait.S')
| -rw-r--r-- | libc/nptl/sysdeps/unix/sysv/linux/x86_64/sem_timedwait.S | 33 |
1 files changed, 5 insertions, 28 deletions
diff --git a/libc/nptl/sysdeps/unix/sysv/linux/x86_64/sem_timedwait.S b/libc/nptl/sysdeps/unix/sysv/linux/x86_64/sem_timedwait.S index ca49cb89d..576a49496 100644 --- a/libc/nptl/sysdeps/unix/sysv/linux/x86_64/sem_timedwait.S +++ b/libc/nptl/sysdeps/unix/sysv/linux/x86_64/sem_timedwait.S @@ -1,4 +1,4 @@ -/* Copyright (C) 2002,2003,2005,2007,2009,2010 Free Software Foundation, Inc. +/* Copyright (C) 2002,2003,2005,2007,2009,2010,2011 Free Software Foundation, Inc. This file is part of the GNU C Library. Contributed by Ulrich Drepper <drepper@redhat.com>, 2002. @@ -24,10 +24,6 @@ #include <pthread-errnos.h> #include <structsem.h> - -/* For the calculation see asm/vsyscall.h. */ -#define VSYSCALL_ADDR_vgettimeofday 0xffffffffff600000 - .text .globl sem_timedwait @@ -147,39 +143,24 @@ sem_timedwait: cfi_adjust_cfa_offset(8) 3: negq %r9 -#if USE___THREAD movq errno@gottpoff(%rip), %rdx movl %r9d, %fs:(%rdx) -#else - callq __errno_location@plt - movl %r9d, (%rax) -#endif orl $-1, %eax jmp 15b cfi_adjust_cfa_offset(-8) 6: -#if USE___THREAD movq errno@gottpoff(%rip), %rdx movl $EINVAL, %fs:(%rdx) -#else - callq __errno_location@plt - movl $EINVAL, (%rax) -#endif orl $-1, %eax retq 16: -#if USE___THREAD movq errno@gottpoff(%rip), %rdx movl $ETIMEDOUT, %fs:(%rdx) -#else - callq __errno_location@plt - movl $ETIMEDOUT, (%rax) -#endif orl $-1, %eax @@ -212,9 +193,10 @@ sem_timedwait: addq $1, NWAITERS(%r12) 7: xorl %esi, %esi - movq %rsp, %rdi - movq $VSYSCALL_ADDR_vgettimeofday, %rax - callq *%rax + movq %rsp,%rdi + /* This call works because we directly jump to a system call entry + which preserves all the registers. */ + call JUMPTARGET(__gettimeofday) /* Compute relative timeout. */ movq 8(%rsp), %rax @@ -306,13 +288,8 @@ sem_timedwait: cfi_rel_offset(%r14, STACKFRAME) 33: negq %r14 36: -#if USE___THREAD movq errno@gottpoff(%rip), %rdx movl %r14d, %fs:(%rdx) -#else - callq __errno_location@plt - movl %r14d, (%rax) -#endif orl $-1, %eax jmp 45b |