46 lines
1.8 KiB
ArmAsm
46 lines
1.8 KiB
ArmAsm
/* BSD `setjmp' entry point to `sigsetjmp (..., 1)'. i386 version.
|
|
Copyright (C) 1994, 1995, 1996, 1997 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
|
|
modify it under the terms of the GNU Library General Public License as
|
|
published by the Free Software Foundation; either version 2 of the
|
|
License, or (at your option) any later version.
|
|
|
|
The GNU C Library is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
Library General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Library General Public
|
|
License along with the GNU C Library; see the file COPYING.LIB. If not,
|
|
write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
|
|
Boston, MA 02111-1307, USA. */
|
|
|
|
/* This just does a tail-call to `__sigsetjmp (ARG, 1)'.
|
|
We cannot do it in C because it must be a tail-call, so frame-unwinding
|
|
in setjmp doesn't clobber the state restored by longjmp. */
|
|
|
|
#include <sysdep.h>
|
|
|
|
ENTRY (setjmp)
|
|
popl %eax /* Pop return PC. */
|
|
popl %ecx /* Pop jmp_buf argument. */
|
|
pushl $1 /* Push second argument of one. */
|
|
pushl %ecx /* Push back first argument. */
|
|
pushl %eax /* Push back return PC. */
|
|
#ifdef PIC
|
|
/* We cannot use the PLT, because it requires that %ebx be set, but
|
|
we can't save and restore our caller's value. Instead, we do an
|
|
indirect jump through the GOT, using for the temporary register
|
|
%ecx, which is call-clobbered. */
|
|
call here
|
|
here: popl %ecx
|
|
addl $_GLOBAL_OFFSET_TABLE_+[.-here], %ecx
|
|
movl C_SYMBOL_NAME(__sigsetjmp@GOT)(%ecx), %ecx
|
|
jmp *%ecx
|
|
#else
|
|
jmp __sigsetjmp
|
|
#endif
|
|
END (setjmp)
|