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x86_64: makecontext: exit (0) if uc_link is the null pointer.

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This commit is contained in:
Thomas Schwinge 2012-07-17 10:06:02 +02:00
parent dc97c227c9
commit f7db31703a
2 changed files with 8 additions and 2 deletions
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5
ChangeLog
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@ -1,3 +1,8 @@
2012-07-17 Thomas Schwinge <thomas@codesourcery.com>
* sysdeps/unix/sysv/linux/x86_64/__start_context.S
(__start_context): Preserve zero value for regular exit case.
2012-07-17 Thomas Schwinge <thomas@codesourcery.com>
Andreas Krebbel <Andreas.Krebbel@de.ibm.com>

5
sysdeps/unix/sysv/linux/x86_64/__start_context.S
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@ -1,4 +1,4 @@
/* Copyright (C) 2002, 2003, 2004 Free Software Foundation, Inc.
/* Copyright (C) 2002-2012 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Andreas Jaeger <aj@suse.de>, 2002.
@ -39,8 +39,9 @@ ENTRY(__start_context)
call JUMPTARGET(__setcontext)
/* If this returns (which can happen if the syscall fails) we'll
exit the program with the return error value (-1). */
movq %rax,%rdi
2: movq %rax,%rdi
2:
call HIDDEN_JUMPTARGET(exit)
/* The 'exit' call should never return. In case it does cause
the process to terminate. */