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Fix x86_64/sched_getcpu.S error code

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Rearrange code so that pseudo_end is just ret and the stack pointer
is correct also for static library in error case.
This commit is contained in:
Andreas Jaeger 2012-05-22 22:35:04 +02:00
parent e2d6cea0a1
commit 7333835592
2 changed files with 15 additions and 5 deletions
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6
ChangeLog
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@ -1,3 +1,9 @@
2012-05-22 Andreas Jaeger <aj@suse.de>
* sysdeps/unix/sysv/linux/x86_64/sched_getcpu.S: Rearrange code so
that pseudo_end is just ret and the stack pointer is correct also
for static library in error case.
2012-05-22 Paul Pluzhnikov <ppluzhnikov@google.com>
[BZ #14122]

14
sysdeps/unix/sysv/linux/x86_64/sched_getcpu.S
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@ -1,4 +1,4 @@
/* Copyright (C) 2007, 2011 Free Software Foundation, Inc.
/* Copyright (C) 2007-2012 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
@ -59,13 +59,17 @@ ENTRY (sched_getcpu)
# endif
#endif
/* Local variable is result if the call is successful. */
movl (%rsp), %edx
/* Restore stack pointer before we might jump to
SYSCALL_ERROR_LABEL which returns to the caller. */
add $0x8, %rsp
cfi_adjust_cfa_offset(-8)
cmpq $-4095, %rax
jae SYSCALL_ERROR_LABEL
movl (%rsp), %eax
movl %edx, %eax
L(pseudo_end):
add $0x8, %rsp
cfi_adjust_cfa_offset(-8)
ret
PSEUDO_END(sched_getcpu)