| /* BSD `setjmp' entry point to `sigsetjmp (..., 1)'. s390 version. |
| Copyright (C) 2000, 2001, 2002 Free Software Foundation, Inc. |
| Contributed by Martin Schwidefsky (schwidefsky@de.ibm.com). |
| 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 Lesser General Public |
| License as published by the Free Software Foundation; either |
| version 2.1 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 |
| Lesser General Public License for more details. |
| |
| You should have received a copy of the GNU Lesser General Public |
| License along with the GNU C Library; 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, 0)'. |
| 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) |
| #ifdef PIC |
| /* We cannot use the PLT, because it requires that %r12 be set, but |
| we can't save and restore our caller's value. Instead, we do an |
| indirect jump through the GOT. */ |
| basr %r1,0 |
| .L0: al %r1,.L1 - .L0(0,%r1) /* get address of global offset table */ |
| /* get address of __sigjmp_save from got */ |
| l %r1,__sigjmp_save@GOT12(0,%r1) |
| lhi %r3,0 /* second argument of one */ |
| br %r1 |
| .L1: .long _GLOBAL_OFFSET_TABLE_ - .L0 |
| #else |
| basr %r1,0 |
| .L0: l %r1,.L1 - .L0(0,%r1) /* load address of __sigsetjmp */ |
| lhi %r3,0 /* second argument of zero */ |
| br %r1 /* branch to __sigsetjmp */ |
| .L1: .long __sigsetjmp |
| #endif |
| END (_setjmp) |
| libc_hidden_def (_setjmp) |
