(CFLAGS-tst-align.c): Add -mpreferred-stack-boundary=4.

3 files changed, 44 insertions, 52 deletions

diff --git a/nptl/sysdeps/s390/jmpbuf-unwind.h b/nptl/sysdeps/s390/jmpbuf-unwind.h
new file mode 100644
index 0000000..9f7e1ad
--- /dev/null
+++ b/nptl/sysdeps/s390/jmpbuf-unwind.h
@@ -0,0 +1,37 @@
+/* Copyright (C) 2003, 2004 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Jakub Jelinek <jakub@redhat.com>, 2003.
+
+   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.  */
+
+#include <setjmp.h>
+#include <stdint.h>
+#include <unwind.h>
+#include <bits/wordsize.h>
+
+/* On s390{,x}, CFA is always 96 (resp. 160) bytes above actual
+   %r15.  */
+#define _JMPBUF_CFA_UNWINDS_ADJ(_jmpbuf, _context, _adj) \
+  _JMPBUF_UNWINDS_ADJ (_jmpbuf,					\
+		       (void *) (_Unwind_GetCFA (_context)	\
+				 - 32 - 2 * __WORDSIZE), _adj)
+
+#define _JMPBUF_UNWINDS_ADJ(_jmpbuf, _address, _adj)		\
+  ((uintptr_t) (_address) - (_adj)				\
+   < (uintptr_t) (_jmpbuf)->__gregs[__JB_GPR15] - (_adj))
+
+/* We use the normal longjmp for unwinding.  */
+#define __libc_unwind_longjmp(buf, val) __libc_longjmp (buf, val)
diff --git a/nptl/sysdeps/s390/tcb-offsets.sym b/nptl/sysdeps/s390/tcb-offsets.sym
index 9cfae21..237f975 100644
--- a/nptl/sysdeps/s390/tcb-offsets.sym
+++ b/nptl/sysdeps/s390/tcb-offsets.sym
@@ -2,6 +2,5 @@
 #include <tls.h>
 
 MULTIPLE_THREADS_OFFSET		offsetof (tcbhead_t, multiple_threads)
-STACK_GUARD			offsetof (tcbhead_t, stack_guard)
 PID				offsetof (struct pthread, pid)
 TID				offsetof (struct pthread, tid)
diff --git a/nptl/sysdeps/s390/tls.h b/nptl/sysdeps/s390/tls.h
index 8e8f86d..c9b991d 100644
--- a/nptl/sysdeps/s390/tls.h
+++ b/nptl/sysdeps/s390/tls.h
@@ -1,5 +1,5 @@
 /* Definition for thread-local data handling.  NPTL/s390 version.
-   Copyright (C) 2003, 2004, 2005, 2007 Free Software Foundation, Inc.
+   Copyright (C) 2003, 2004 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    The GNU C Library is free software; you can redistribute it and/or
@@ -22,7 +22,6 @@
 
 #include <dl-sysdep.h>
 #ifndef __ASSEMBLER__
-# include <stdbool.h>
 # include <stddef.h>
 # include <stdint.h>
 # include <stdlib.h>
@@ -33,11 +32,7 @@
 typedef union dtv
 {
   size_t counter;
-  struct
-  {
-    void *val;
-    bool is_static;
-  } pointer;
+  void *pointer;
 } dtv_t;
 
 
@@ -48,9 +43,9 @@ typedef struct
   dtv_t *dtv;
   void *self;		/* Pointer to the thread descriptor.  */
   int multiple_threads;
+# ifdef NEED_DL_SYSINFO
   uintptr_t sysinfo;
-  uintptr_t stack_guard;
-  int gscope_flag;
+# endif
 } tcbhead_t;
 
 # ifndef __s390x__
@@ -81,13 +76,11 @@ typedef struct
 /* Get the thread descriptor definition.  */
 # include <nptl/descr.h>
 
-/* This is the size of the initial TCB.  Can't be just sizeof (tcbhead_t),
-   because NPTL getpid, __libc_alloca_cutoff etc. need (almost) the whole
-   struct pthread even when not linked with -lpthread.  */
-# define TLS_INIT_TCB_SIZE sizeof (struct pthread)
+/* This is the size of the initial TCB.  */
+# define TLS_INIT_TCB_SIZE sizeof (tcbhead_t)
 
 /* Alignment requirements for the initial TCB.  */
-# define TLS_INIT_TCB_ALIGN __alignof__ (struct pthread)
+# define TLS_INIT_TCB_ALIGN __alignof__ (tcbhead_t)
 
 /* This is the size of the TCB.  */
 # define TLS_TCB_SIZE sizeof (struct pthread)
@@ -158,43 +151,6 @@ typedef struct
 #define THREAD_SETMEM_NC(descr, member, idx, value) \
   descr->member[idx] = (value)
 
-/* Set the stack guard field in TCB head.  */
-#define THREAD_SET_STACK_GUARD(value) \
-  THREAD_SETMEM (THREAD_SELF, header.stack_guard, value)
-#define THREAD_COPY_STACK_GUARD(descr) \
-  ((descr)->header.stack_guard						      \
-   = THREAD_GETMEM (THREAD_SELF, header.stack_guard))
-
-/* s390 doesn't have HP_TIMING_*, so for the time being
-   use stack_guard as pointer_guard.  */
-#define THREAD_GET_POINTER_GUARD() \
-  THREAD_GETMEM (THREAD_SELF, header.stack_guard)
-#define THREAD_SET_POINTER_GUARD(value)
-#define THREAD_COPY_POINTER_GUARD(descr)
-
-/* Get and set the global scope generation counter in struct pthread.  */
-#define THREAD_GSCOPE_FLAG_UNUSED 0
-#define THREAD_GSCOPE_FLAG_USED   1
-#define THREAD_GSCOPE_FLAG_WAIT   2
-#define THREAD_GSCOPE_RESET_FLAG() \
-  do									     \
-    { int __res								     \
-	= atomic_exchange_rel (&THREAD_SELF->header.gscope_flag,	     \
-			       THREAD_GSCOPE_FLAG_UNUSED);		     \
-      if (__res == THREAD_GSCOPE_FLAG_WAIT)				     \
-	lll_futex_wake (&THREAD_SELF->header.gscope_flag, 1);		     \
-    }									     \
-  while (0)
-#define THREAD_GSCOPE_SET_FLAG() \
-  do									     \
-    {									     \
-      THREAD_SELF->header.gscope_flag = THREAD_GSCOPE_FLAG_USED;	     \
-      atomic_write_barrier ();						     \
-    }									     \
-  while (0)
-#define THREAD_GSCOPE_WAIT() \
-  GL(dl_wait_lookup_done) ()
-
 #endif /* __ASSEMBLER__ */
 
 #endif	/* tls.h */