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

5 files changed, 19 insertions, 61 deletions

diff --git a/sysdeps/unix/sysv/linux/s390/s390-64/____longjmp_chk.c b/sysdeps/unix/sysv/linux/s390/s390-64/____longjmp_chk.c
index bc27b08728..a3b1375a0d 100644
--- a/sysdeps/unix/sysv/linux/s390/s390-64/____longjmp_chk.c
+++ b/sysdeps/unix/sysv/linux/s390/s390-64/____longjmp_chk.c
@@ -26,8 +26,8 @@
 #include <stdint.h>
 #include <signal.h>
 #include <sys/syscall.h>
-#include <libc-symbols.h>
-#include <shlib-compat.h>
+
+#define __longjmp ____longjmp_chk
 
 #define CHECK_SP(env, guard) \
   do									\
@@ -51,23 +51,4 @@
 	}								\
     } while (0)
 
-
-#if defined NOT_IN_libc
-/* Build a non-versioned object for rtld-*.  */
-# define __longjmp ____longjmp_chk
-# include "__longjmp-common.c"
-
-#else /* !NOT_IN_libc */
-# define __longjmp  ____v2__longjmp_chk
-# include "__longjmp-common.c"
-# undef __longjmp
-
-# if defined SHARED && SHLIB_COMPAT (libc, GLIBC_2_11, GLIBC_2_19)
-#  undef __longjmp
-#  define __V1_JMPBUF
-#  define __longjmp  ____v1__longjmp_chk
-#  include "__longjmp-common.c"
-#  undef __longjmp
-
-# endif
-#endif /* !NOT_IN_libc */
+#include "__longjmp.c"
diff --git a/sysdeps/unix/sysv/linux/s390/s390-64/getcontext-common.S b/sysdeps/unix/sysv/linux/s390/s390-64/getcontext.S
index 3e61e30702..26a1c514c4 100644
--- a/sysdeps/unix/sysv/linux/s390/s390-64/getcontext-common.S
+++ b/sysdeps/unix/sysv/linux/s390/s390-64/getcontext.S
@@ -21,6 +21,8 @@
 
 #include "ucontext_i.h"
 
+#include <shlib-compat.h>
+
 /*  __getcontext (const ucontext_t *ucp)
 
   Saves the machine context in UCP such that when it is activated,
@@ -62,10 +64,6 @@ ENTRY(__getcontext)
 	/* Set __getcontext return value to 0.  */
 	slgr    %r2,%r2
 
-	/* Store the version number into the uc_flags field.  So far
-	   we do not make use of the reserved bytes so we store a zero.  */
-	stg	%r2,SC_FLGS(%r1)
-
 	/* Store access registers.  */
 	stam    %a0,%a15,SC_ACRS(%r1)
 
@@ -77,3 +75,12 @@ ENTRY(__getcontext)
 END(__getcontext)
 
 weak_alias (__getcontext, getcontext)
+
+#if defined SHARED && SHLIB_COMPAT (libc, GLIBC_2_19, GLIBC_2_20)
+/* In glibc release 2.19 a new version of getcontext was introduced,
+   but was reverted before 2.20. Thus both versions are the same function.  */
+weak_alias (__getcontext, __v1__getcontext)
+weak_alias (__getcontext, __v2__getcontext)
+versioned_symbol (libc, __v1__getcontext, getcontext, GLIBC_2_1)
+compat_symbol (libc, __v2__getcontext, getcontext, GLIBC_2_19)
+#endif
diff --git a/sysdeps/unix/sysv/linux/s390/s390-64/libc.abilist b/sysdeps/unix/sysv/linux/s390/s390-64/libc.abilist
index 4576fc8d14..807f702981 100644
--- a/sysdeps/unix/sysv/linux/s390/s390-64/libc.abilist
+++ b/sysdeps/unix/sysv/linux/s390/s390-64/libc.abilist
@@ -98,7 +98,6 @@ GLIBC_2.18
 GLIBC_2.19
  GLIBC_2.19 A
  __longjmp_chk F
- __setjmp F
  __sigsetjmp F
  _longjmp F
  _setjmp F
diff --git a/sysdeps/unix/sysv/linux/s390/s390-64/swapcontext.S b/sysdeps/unix/sysv/linux/s390/s390-64/swapcontext.S
index ac74b6bc08..e3e624c91b 100644
--- a/sysdeps/unix/sysv/linux/s390/s390-64/swapcontext.S
+++ b/sysdeps/unix/sysv/linux/s390/s390-64/swapcontext.S
@@ -65,25 +65,21 @@ ENTRY(__swapcontext)
 	std     %f14,SC_FPRS+112(%r1)
 	std     %f15,SC_FPRS+120(%r1)
 
+	/* Set __swapcontext return value to 0.  */
+	slgr     %r2,%r2
+
 	/* Store access registers.  */
 	stam    %a0,%a15,SC_ACRS(%r1)
 
-	/* Set __swapcontext return value to 0.  */
-	slgr	%r2,%r2
-
 	/* Store general purpose registers.  */
 	stmg    %r0,%r15,SC_GPRS(%r1)
 
-	/* Copy uc_flags into the new ucontext_t.  */
-	lgr	%r5,%r0
-	lg	%r2,SC_FLGS(%r5)
-	stg	%r2,SC_FLGS(%r1)
-
 	/* rt_sigprocmask (SIG_SETMASK, &sc->sc_mask, NULL, sigsetsize).  */
 	la      %r2,SIG_BLOCK
+	lgr	%r5,%r0
 	la	%r3,SC_MASK(%r5)
-	slgr	%r4,%r4
 	lghi	%r5,_NSIG8
+	slgr	%r4,%r4
 	svc	SYS_ify(rt_sigprocmask)
 
 	/* Load fpu context.  */
diff --git a/sysdeps/unix/sysv/linux/s390/s390-64/ucontext_i.sym b/sysdeps/unix/sysv/linux/s390/s390-64/ucontext_i.sym
deleted file mode 100644
index 6cc9f19624..0000000000
--- a/sysdeps/unix/sysv/linux/s390/s390-64/ucontext_i.sym
+++ /dev/null
@@ -1,25 +0,0 @@
-#include <stddef.h>
-#include <signal.h>
-#include <sys/ucontext.h>
-
---
-
-SIG_BLOCK
-SIG_UNBLOCK
-SIG_SETMASK
-
-_NSIG8          (_NSIG / 8)
-
-#define ucontext(member)	offsetof (ucontext_t, member)
-#define mcontext(member)	ucontext (uc_mcontext.member)
-
-SC_FLGS		ucontext (uc_flags)
-SC_LINK		ucontext (uc_link)
-SC_STCK		ucontext (uc_stack.ss_sp)
-SC_STSZ		ucontext (uc_stack.ss_size)
-SC_PSW		mcontext (psw)
-SC_GPRS		mcontext (gregs)
-SC_ACRS		mcontext (aregs)
-SC_FPC		mcontext (fpregs.fpc)
-SC_FPRS		mcontext (fpregs.fprs)
-SC_MASK		ucontext (uc_sigmask)