S/390: Revert the jmp_buf/ucontext_t ABI change.

2 files changed, 42 insertions, 15 deletions

diff --git a/sysdeps/s390/s390-32/__longjmp-common.c b/sysdeps/s390/s390-32/__longjmp.c
index f78ef656e5..5d46e21923 100644
--- a/sysdeps/s390/s390-32/__longjmp-common.c
+++ b/sysdeps/s390/s390-32/__longjmp.c
@@ -25,7 +25,7 @@
 
 /* Jump to the position specified by ENV, causing the
    setjmp call there to return VAL, or 1 if VAL is 0.  */
-attribute_hidden void
+void
 __longjmp (__jmp_buf env, int val)
 {
 #ifdef PTR_DEMANGLE
diff --git a/sysdeps/s390/s390-32/setjmp-common.S b/sysdeps/s390/s390-32/setjmp.S
index d7bb720454..e940d71a9e 100644
--- a/sysdeps/s390/s390-32/setjmp-common.S
+++ b/sysdeps/s390/s390-32/setjmp.S
@@ -21,30 +21,38 @@
 #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      0f                   /* branch relativ to __sigsetjmp */
+	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      0f                   /* branch relativ to __sigsetjmp */
+	j      .Linternal_sigsetjmp /* branch relativ to __sigsetjmp */
 END (_setjmp)
 libc_hidden_def (_setjmp)
 
 ENTRY(__setjmp)
 	lhi    %r3,0                /* second argument of zero */
-	j      0f                   /* branch relativ to __sigsetjmp */
+	j      .Linternal_sigsetjmp /* branch relativ to __sigsetjmp */
 END (__setjmp)
 
 ENTRY(__sigsetjmp)
-0:
+.Linternal_sigsetjmp:
 #ifdef PTR_MANGLE
 	stm    %r6,%r13,0(%r2)      /* store registers in jmp_buf */
 	lr     %r4,%r14
@@ -55,10 +63,6 @@ ENTRY(__sigsetjmp)
 #else
 	stm    %r6,%r15,0(%r2)      /* store registers in jmp_buf */
 #endif
-#ifndef __V1_JMPBUF
-	lhi    %r4,0
-	st     %r4,56(%r2)         /* Set __flags to 0.  */
-#endif
 	std    %f4,40(%r2)
 	std    %f6,48(%r2)
 #if defined NOT_IN_libc && defined IS_IN_rtld
@@ -70,15 +74,38 @@ ENTRY(__sigsetjmp)
 	   we can't save and restore our caller's value.  Instead, we do an
 	   indirect jump through the GOT. */
 	basr   %r1,0
-0:      al     %r1,1f-0b(0,%r1) /* get address of global offset table */
-				/* get address of __sigjmp_save from got */
+.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
-1:      .long  _GLOBAL_OFFSET_TABLE_ - 0b
+.L1:    .long  _GLOBAL_OFFSET_TABLE_ - .L0
 #else
 	basr   %r1,0
-0:      l      %r1,1f-0b(0,%r1)   /* load address of __sigjmp_save */
-	br     %r1                /* tail-call __sigjmp_save */
-1:      .long  __sigjmp_save
+.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  */