| /* setjmp for s390, ELF version. |
| Copyright (C) 2000-2018 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, see |
| <http://www.gnu.org/licenses/>. */ |
| |
| #include <sysdep.h> |
| #define _ASM |
| #define _SETJMP_H |
| #include <bits/setjmp.h> |
| #include <shlib-compat.h> |
| #include <stap-probe.h> |
| |
| #if !IS_IN (rtld) && defined SHARED \ |
| && SHLIB_COMPAT (libc, GLIBC_2_19, GLIBC_2_20) |
| # define NEED_COMPAT_SYMBOLS 1 |
| /* We need a unique name in case of symbol versioning. */ |
| # define setjmp __v1setjmp |
| # define _setjmp __v1_setjmp |
| # define __sigsetjmp __v1__sigsetjmp |
| #else |
| # define NEED_COMPAT_SYMBOLS 0 |
| #endif |
| |
| /* We include the BSD entry points here as well. */ |
| ENTRY (setjmp) |
| lhi %r3,1 /* second argument of one */ |
| j .Linternal_sigsetjmp /* branch relativ to __sigsetjmp */ |
| END (setjmp) |
| |
| /* Binary compatibility entry point. */ |
| ENTRY(_setjmp) |
| lhi %r3,0 /* second argument of zero */ |
| j .Linternal_sigsetjmp /* branch relativ to __sigsetjmp */ |
| END (_setjmp) |
| #if NEED_COMPAT_SYMBOLS |
| strong_alias (_setjmp, __GI__setjmp) |
| #else |
| libc_hidden_def (_setjmp) |
| #endif |
| |
| ENTRY(__setjmp) |
| lhi %r3,0 /* second argument of zero */ |
| j .Linternal_sigsetjmp /* branch relativ to __sigsetjmp */ |
| END (__setjmp) |
| |
| ENTRY(__sigsetjmp) |
| .Linternal_sigsetjmp: |
| /* setjmp probe expects sig/setjmp first argument (4@%r2), second |
| argument (-4@%r3) and target address (4@%r14). */ |
| LIBC_PROBE (setjmp, 3, 4@%r2, -4@%r3, 4@%r14) |
| #ifdef PTR_MANGLE |
| stm %r6,%r13,0(%r2) /* store registers in jmp_buf */ |
| lr %r4,%r14 |
| lr %r5,%r15 |
| PTR_MANGLE (%r4, %r1) |
| PTR_MANGLE2 (%r5, %r1) |
| stm %r4,%r5,32(%r2) |
| #else |
| stm %r6,%r15,0(%r2) /* store registers in jmp_buf */ |
| #endif |
| std %f4,40(%r2) |
| std %f6,48(%r2) |
| #if IS_IN (rtld) |
| /* In ld.so we never save the signal mask. */ |
| lhi %r2,0 |
| br %r14 |
| #elif defined 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@GOT(%r1) |
| br %r1 |
| .L1: .long _GLOBAL_OFFSET_TABLE_ - .L0 |
| #else |
| basr %r1,0 |
| .L0: l %r1,.L1-.L0(0,%r1) /* load address of __sigjmp_save */ |
| br %r1 /* tail-call __sigjmp_save */ |
| .L1: .long __sigjmp_save |
| #endif |
| END (__sigsetjmp) |
| #if NEED_COMPAT_SYMBOLS |
| strong_alias (__sigsetjmp, __GI___sigsetjmp) |
| #else |
| libc_hidden_def (__sigsetjmp) |
| #endif |
| |
| #if NEED_COMPAT_SYMBOLS |
| /* In glibc release 2.19 new versions of setjmp-functions were introduced, |
| but were reverted before 2.20. Thus both versions are the same function. */ |
| |
| # undef setjmp |
| # undef _setjmp |
| # undef __sigsetjmp |
| |
| strong_alias (__v1setjmp, __v2setjmp); |
| versioned_symbol (libc, __v1setjmp, setjmp, GLIBC_2_0); |
| compat_symbol (libc, __v2setjmp, setjmp, GLIBC_2_19); |
| |
| strong_alias (__v1_setjmp, __v2_setjmp); |
| versioned_symbol (libc, __v1_setjmp, _setjmp, GLIBC_2_0); |
| compat_symbol (libc, __v2_setjmp, _setjmp, GLIBC_2_19); |
| |
| strong_alias (__v1__sigsetjmp, __v2__sigsetjmp); |
| versioned_symbol (libc, __v1__sigsetjmp, __sigsetjmp, GLIBC_2_0); |
| compat_symbol (libc, __v2__sigsetjmp, __sigsetjmp, GLIBC_2_19); |
| #endif /* NEED_COMPAT_SYMBOLS */ |