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authorStefan Liebler <stli@linux.vnet.ibm.com>2014-07-31 20:04:54 +0200
committerAndreas Krebbel <krebbel@linux.vnet.ibm.com>2014-07-31 20:04:54 +0200
commit2f438e20ab591641760e97458d5d1569942eced5 (patch)
tree3fb25d366c77a51ecfbf1c79d4b0b02521573443 /sysdeps/s390/s390-32/setjmp.S
parent6c9578a24b5c4182d1c475a32a147478bc757bf3 (diff)
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S/390: Revert the jmp_buf/ucontext_t ABI change.
Diffstat (limited to 'sysdeps/s390/s390-32/setjmp.S')
-rw-r--r--sysdeps/s390/s390-32/setjmp.S111
1 files changed, 111 insertions, 0 deletions
diff --git a/sysdeps/s390/s390-32/setjmp.S b/sysdeps/s390/s390-32/setjmp.S
new file mode 100644
index 0000000..e940d71
--- /dev/null
+++ b/sysdeps/s390/s390-32/setjmp.S
@@ -0,0 +1,111 @@
+/* setjmp for s390, ELF version.
+ Copyright (C) 2000-2014 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>
+
+#if !defined IS_IN_rtld
+# if defined SHARED && SHLIB_COMPAT (libc, GLIBC_2_19, GLIBC_2_20)
+ /* we need a unique name in case of symbol versioning. */
+# define __sigsetjmp __v1__sigsetjmp
+# endif /* if defined SHARED && SHLIB_COMPAT (libc, GLIBC_2_19, GLIBC_2_20) */
+#endif /* !defined IS_IN_rtld */
+
+ /* We include the BSD entry points here as well but we make
+ them weak. */
+ENTRY (setjmp)
+ .weak C_SYMBOL_NAME (setjmp)
+ lhi %r3,1 /* second argument of one */
+ j .Linternal_sigsetjmp /* branch relativ to __sigsetjmp */
+END (setjmp)
+
+ /* Binary compatibility entry point. */
+ENTRY(_setjmp)
+ .weak C_SYMBOL_NAME (_setjmp)
+ lhi %r3,0 /* second argument of zero */
+ j .Linternal_sigsetjmp /* branch relativ to __sigsetjmp */
+END (_setjmp)
+libc_hidden_def (_setjmp)
+
+ENTRY(__setjmp)
+ lhi %r3,0 /* second argument of zero */
+ j .Linternal_sigsetjmp /* branch relativ to __sigsetjmp */
+END (__setjmp)
+
+ENTRY(__sigsetjmp)
+.Linternal_sigsetjmp:
+#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 defined NOT_IN_libc && defined 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@GOT12(0,%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 !defined IS_IN_rtld
+# if defined SHARED && SHLIB_COMPAT (libc, GLIBC_2_19, GLIBC_2_20)
+/* 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 __sigsetjmp
+
+weak_alias (setjmp, __v1setjmp);
+weak_alias (setjmp, __v2setjmp);
+versioned_symbol (libc, __v1setjmp, setjmp, GLIBC_2_0);
+compat_symbol (libc, __v2setjmp, setjmp, GLIBC_2_19);
+
+weak_alias (_setjmp, __v1_setjmp);
+weak_alias (_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 /* if defined SHARED && SHLIB_COMPAT (libc, GLIBC_2_19, GLIBC_2_20) */
+#endif /* if !defined IS_IN_rtld */