Update.

2000-08-02 Andreas Jaeger <aj@suse.de> * sysdeps/unix/sysv/linux/s390/Dist: New file. * sysdeps/unix/sysv/linux/s390/sysdep.h: New file. * sysdeps/unix/sysv/linux/s390/sysdep.S: New file. * sysdeps/unix/sysv/linux/s390/syscall.S: New file. * sysdeps/unix/sysv/linux/s390/sys/user.h: New file. * sysdeps/unix/sysv/linux/s390/sys/ucontext.h: New file. * sysdeps/unix/sysv/linux/s390/sys/ptrace.h: New file. * sysdeps/unix/sysv/linux/s390/sys/elf.h: New file. * sysdeps/unix/sysv/linux/s390/socket.S: New file. * sysdeps/unix/sysv/linux/s390/sigcontextinfo.h: New file. * sysdeps/unix/sysv/linux/s390/shmctl.c: New file. * sysdeps/unix/sysv/linux/s390/setreuid.c: New file. * sysdeps/unix/sysv/linux/s390/setresuid.c: New file. * sysdeps/unix/sysv/linux/s390/setresgid.c: New file. * sysdeps/unix/sysv/linux/s390/setregid.c: New file. * sysdeps/unix/sysv/linux/s390/setgroups.c: New file. * sysdeps/unix/sysv/linux/s390/setgid.c: New file. * sysdeps/unix/sysv/linux/s390/setfsuid.c: New file. * sysdeps/unix/sysv/linux/s390/setfsgid.c: New file. * sysdeps/unix/sysv/linux/s390/seteuid.c: New file. * sysdeps/unix/sysv/linux/s390/setegid.c: New file. * sysdeps/unix/sysv/linux/s390/semctl.c: New file. * sysdeps/unix/sysv/linux/s390/register-dump.h: New file. * sysdeps/unix/sysv/linux/s390/putpmsg.c: New file. * sysdeps/unix/sysv/linux/s390/putmsg.c: New file. * sysdeps/unix/sysv/linux/s390/profil-counter.h: New file. * sysdeps/unix/sysv/linux/s390/msgctl.c: New file. * sysdeps/unix/sysv/linux/s390/mmap.S: New file. * sysdeps/unix/sysv/linux/s390/getuid.c: New file. * sysdeps/unix/sysv/linux/s390/getresuid.c: New file. * sysdeps/unix/sysv/linux/s390/getresgid.c: New file. * sysdeps/unix/sysv/linux/s390/getpmsg.c: New file. * sysdeps/unix/sysv/linux/s390/getmsg.c: New file. * sysdeps/unix/sysv/linux/s390/getgroups.c: New file. * sysdeps/unix/sysv/linux/s390/getegid.c: New file. * sysdeps/unix/sysv/linux/s390/geteuid.c: New file. * sysdeps/unix/sysv/linux/s390/fchown.c: New file. * sysdeps/unix/sysv/linux/s390/clone.S: New file. * sysdeps/unix/sysv/linux/s390/brk.c: New file. * sysdeps/unix/sysv/linux/s390/bits/time.h: New file. * sysdeps/unix/sysv/linux/s390/bits/resource.h: New file. * sysdeps/unix/sysv/linux/s390/bits/mman.h: New file. * sysdeps/unix/sysv/linux/s390/bits/fcntl.h: New file. * sysdeps/unix/sysv/linux/s390/Makefile: New file. * sysdeps/s390/sysdep.h: New file. * sysdeps/s390/sys/ucontext.h: New file. * sysdeps/s390/sub_n.S: New file. * sysdeps/s390/strncpy.S: New file. * sysdeps/s390/strcpy.S: New file. * sysdeps/s390/stackinfo.h: New file. * sysdeps/s390/setjmp.S: New file. * sysdeps/s390/s390-mcount.S: New file. * sysdeps/s390/mul_1.S: New file. * sysdeps/s390/memusage.h: New file. * sysdeps/s390/memset.S: New file. * sysdeps/s390/memcpy.S: New file. * sysdeps/s390/memchr.S: New file. * sysdeps/s390/machine-gmon.h: New file. * sysdeps/s390/ldbl2mpn.c: New file. * sysdeps/s390/gmp-mparam.h: New file. * sysdeps/s390/fpu/fpu_control.h: New file. * sysdeps/s390/fpu/fesetround.c: New file. * sysdeps/s390/fpu/fegetround.c: New file. * sysdeps/s390/fpu/fclrexcpt.c: New file. * sysdeps/s390/fpu/bits/fenv.h: New file. * sysdeps/s390/ffs.c: New file. * sysdeps/s390/elf/start.S: New file. * sysdeps/s390/elf/setjmp.S: New file. * sysdeps/s390/elf/bsd-setjmp.S: New file. * sysdeps/s390/elf/bsd-_setjmp.S: New file. * sysdeps/s390/dl-machine.h: New file. * sysdeps/s390/bzero.S: New file. * sysdeps/s390/bsd-setjmp.S: New file. * sysdeps/s390/bsd-_setjmp.S: New file. * sysdeps/s390/bits/string.h: New file. * sysdeps/s390/bits/setjmp.h: New file. * sysdeps/s390/bits/huge_val.h: New file. * sysdeps/s390/bits/endian.h: New file. * sysdeps/s390/bits/byteswap.h: New file. * sysdeps/s390/bcopy.S: New file. * sysdeps/s390/backtrace.c: New file. * sysdeps/s390/atomicity.h: New file. * sysdeps/s390/asm-syntax.h: New file. * sysdeps/s390/addmul_1.S: New file. * sysdeps/s390/add_n.S: New file. * sysdeps/s390/abort-instr.h: New file. * sysdeps/s390/__longjmp.c: New file. * sysdeps/s390/Makefile: New file. * sysdeps/s390/Implies: New file. * sysdeps/s390/Dist: New file. Patches by Martin Schwidefsky <schwidefsky@de.ibm.com>.
author: Andreas Jaeger <aj@suse.de> 2000-08-02 15:15:00 +0000
committer: Andreas Jaeger <aj@suse.de> 2000-08-02 15:15:00 +0000
commit: 847b055c6567cbe6e154b2006a0a77ed0f48d623 (patch)
tree: dda802aa998b6d196d48893932488d2906724f5d /sysdeps/s390
parent: 9016e55cb809f98e9fd890010ca1eaf35fd616a2 (diff)
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47 files changed, 2850 insertions, 0 deletions
diff --git a/sysdeps/s390/Dist b/sysdeps/s390/Dist
new file mode 100644
index 0000000000..49292153c4
--- /dev/null
+++ b/sysdeps/s390/Dist
@@ -0,0 +1,2 @@
+s390-mcount.S
+machine-gmon.h
diff --git a/sysdeps/s390/Implies b/sysdeps/s390/Implies
new file mode 100644
index 0000000000..71bec4de0c
--- /dev/null
+++ b/sysdeps/s390/Implies
@@ -0,0 +1,4 @@
+wordsize-32
+ieee754
+ieee754/dbl-64
+ieee754/flt-32
diff --git a/sysdeps/s390/Makefile b/sysdeps/s390/Makefile
new file mode 100644
index 0000000000..057862d91b
--- /dev/null
+++ b/sysdeps/s390/Makefile
@@ -0,0 +1,11 @@
+pic-ccflag = -fpic
+
+ifeq ($(subdir),gmon)
+sysdep_routines += s390-mcount
+endif
+
+ifeq ($(subdir),elf)
+CFLAGS-rtld.c += -Wno-uninitialized -Wno-unused
+CFLAGS-dl-load.c += -Wno-unused
+CFLAGS-dl-reloc.c += -Wno-unused
+endif
diff --git a/sysdeps/s390/__longjmp.c b/sysdeps/s390/__longjmp.c
new file mode 100644
index 0000000000..7606aefce2
--- /dev/null
+++ b/sysdeps/s390/__longjmp.c
@@ -0,0 +1,43 @@
+/* Copyright (C) 2000 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Martin Schwidefsky (schwidefsky@de.ibm.com).
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 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
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <errno.h>
+#include <sysdep.h>
+#include <setjmp.h>
+#include <bits/setjmp.h>
+#include <stdlib.h>
+#include <unistd.h>
+
+/* Jump to the position specified by ENV, causing the
+   setjmp call there to return VAL, or 1 if VAL is 0.  */
+void
+__longjmp (__jmp_buf env, int val)
+{
+   unsigned int result;
+
+   /* Restore registers and jump back */
+   asm volatile("lr   %%r2,%0\n\t"        /* put val in grp 2 */
+                "lm   %%r6,%%r15,%1\n\t"
+                "br   %%r14"
+                : : "r" (val == 0 ? 1 : val),
+                "m" (env->gregs[JB_GPR6]) : "2" );
+
+  /* Avoid `volatile function does return' warnings.  */
+  for (;;);
+}
diff --git a/sysdeps/s390/abort-instr.h b/sysdeps/s390/abort-instr.h
new file mode 100644
index 0000000000..6544b2d618
--- /dev/null
+++ b/sysdeps/s390/abort-instr.h
@@ -0,0 +1,2 @@
+/* An op-code of 0 should crash any program.  */
+#define ABORT_INSTRUCTION asm (".word 0")
diff --git a/sysdeps/s390/add_n.S b/sysdeps/s390/add_n.S
new file mode 100644
index 0000000000..4b7d8418c9
--- /dev/null
+++ b/sysdeps/s390/add_n.S
@@ -0,0 +1,63 @@
+/* Add two limb vectors of the same length > 0 and store sum in a third
+   limb vector.
+   Copyright (C) 2000 Free Software Foundation, Inc.
+   Contributed by Martin Schwidefsky (schwidefsky@de.ibm.com).
+   This file is part of the GNU MP Library.
+
+   The GNU MP Library is free software; you can redistribute it and/or modify
+   it under the terms of the GNU Library General Public License as published by
+   the Free Software Foundation; either version 2 of the License, or (at your
+   option) any later version.
+
+   The GNU MP 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 Library General Public
+   License for more details.
+
+   You should have received a copy of the GNU Library General Public License
+   along with the GNU MP Library; see the file COPYING.LIB.  If not, write to
+   the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
+   MA 02111-1307, USA. */
+
+/*
+  INPUT PARAMETERS
+  res_ptr	%r2
+  s1_ptr	%r3
+  s2_ptr	%r4
+  size		%r5
+*/
+
+#include "sysdep.h"
+#include "asm-syntax.h"
+
+	.text
+ENTRY(__mpn_add_n)
+	st     %r6,24(%r15)   # save register 6
+	sr     %r1,%r1
+        lhi    %r0,1          # cannot use ahi to add carry, use alr
+.L0:	l      %r6,0(%r1,%r3) # .L0 -> no carry from last add
+	al     %r6,0(%r1,%r4)
+	st     %r6,0(%r1,%r2)
+	la     %r1,4(0,%r1)
+	brc    3,.L3
+.L1:	brct   %r5,.L0
+	slr    %r2,%r2        # no last carry to return
+	j      .Lexit
+.L2:    l      %r6,0(%r1,%r3) # .L2 -> carry from last add
+	al     %r6,0(%r1,%r4)
+	brc    3,.L4
+	alr    %r6,%r0        # no carry yet, add carry from last add
+	st     %r6,0(%r1,%r2)
+	la     %r1,4(0,%r1)
+	brc    12,.L1          # new carry ?
+.L3:	brct   %r5,.L2
+	lr     %r2,%r0        # return last carry
+	j      .Lexit
+.L4:	alr    %r6,%r0        # already a carry, add carry from last add
+	st     %r6,0(%r1,%r2)
+	la     %r1,4(0,%r1)
+	brct   %r5,.L2
+	lr     %r2,%r0        # return last carry
+.Lexit:	l      %r6,24(%r15)   # restore register 6
+	br     %r14
+END(__mpn_add_n)
diff --git a/sysdeps/s390/addmul_1.S b/sysdeps/s390/addmul_1.S
new file mode 100644
index 0000000000..c98a4c1524
--- /dev/null
+++ b/sysdeps/s390/addmul_1.S
@@ -0,0 +1,58 @@
+/* S390 __mpn_addmul_1 -- Multiply a limb vector with a limb and add
+   the result to a second limb vector.
+   Copyright (C) 2000 Free Software Foundation, Inc.
+   Contributed by Martin Schwidefsky (schwidefsky@de.ibm.com).
+   This file is part of the GNU MP Library.
+
+   The GNU MP Library is free software; you can redistribute it and/or modify
+   it under the terms of the GNU Library General Public License as published by
+   the Free Software Foundation; either version 2 of the License, or (at your
+   option) any later version.
+
+   The GNU MP 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 Library General Public
+   License for more details.
+
+   You should have received a copy of the GNU Library General Public License
+   along with the GNU MP Library; see the file COPYING.LIB.  If not, write to
+   the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
+   MA 02111-1307, USA. */
+
+/*
+   INPUT PARAMETERS
+   res_ptr	%r2
+   s1_ptr	%r3
+   sizeP	%r4
+   s2_limb	%r5
+*/
+
+#include "sysdep.h"
+#include "asm-syntax.h"
+
+	.text
+ENTRY(__mpn_addmul_1)
+	st     %r6,24(%r15)
+	slr    %r6,%r6            # cy_limb = 0
+.L0:	icm    %r1,15,0(%r3)      # get s1_ptr[i]
+	mr     %r0,%r5            # umul_ppmm(prod_high,prod_low,s1_ptr[j],s2_limb)
+	jnm    .L1
+	alr    %r0,%r5
+.L1:	ltr    %r5,%r5
+	jnm    .L2
+	al     %r0,0(%r3)
+.L2:	alr    %r1,%r6            # prod_low += cy_limb
+	lr     %r6,%r0            # cy_limb = prod_high
+	brc    12,.L3
+	ahi    %r6,1              #           + (prod_low < cy_limb)
+.L3:	al     %r1,0(%r2)         # prod_low += res_ptr[i]
+	brc    12,.L4
+	ahi    %r6,1              # cy_limb++
+.L4:	st     %r1,0(%r2)
+	la     %r2,4(0,%r2)
+	la     %r3,4(0,%r3)
+	brct   %r4,.L0
+        lr     %r2,%r6            # return cy_limb
+	l      %r6,24(%r15)
+.Lexit:	br     %r14
+END(__mpn_addmul_1)
diff --git a/sysdeps/s390/asm-syntax.h b/sysdeps/s390/asm-syntax.h
new file mode 100644
index 0000000000..5e050f77f9
--- /dev/null
+++ b/sysdeps/s390/asm-syntax.h
@@ -0,0 +1,42 @@
+/* Definitions for S/390 syntax variations.
+   Copyright (C) 1992, 1994, 1995, 1997, 2000 Free Software Foundation, Inc.
+
+   This file is part of the GNU C Library.  Its master source is NOT part of
+   the C library, however.  The master source lives in the GNU MP Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 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
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#undef ALIGN
+#if defined NOLOG_ALIGN || defined HAVE_ELF
+# define ALIGN(log) .align 1<<log
+#else
+# define ALIGN(log) .align log
+#endif
+
+#undef L
+#ifdef __ELF__
+# ifdef __STDC__
+#  define L(body) .L##body
+# else
+#  define L(body) .L/**/body
+# endif
+#else
+# ifdef __STDC__
+#  define L(body) L##body
+# else
+#  define L(body) L/**/body
+# endif
+#endif
diff --git a/sysdeps/s390/atomicity.h b/sysdeps/s390/atomicity.h
new file mode 100644
index 0000000000..0c97f405ef
--- /dev/null
+++ b/sysdeps/s390/atomicity.h
@@ -0,0 +1,74 @@
+/* Low-level functions for atomic operations.  S390 version.
+   Copyright (C) 2000 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 Library General Public License as
+   published by the Free Software Foundation; either version 2 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
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#ifndef _ATOMICITY_H
+#define _ATOMICITY_H	1
+
+#include <inttypes.h>
+
+static inline int
+__attribute__ ((unused))
+exchange_and_add (volatile uint32_t *mem, int val)
+{
+  int result;
+  __asm__ __volatile__(
+        "       L     %0,%2\n"
+        "       LA    2,%1\n"
+        "0:     LR    0,%0\n"
+        "       AR    0,%3\n"
+        "       CS    %0,0,0(2)\n"
+        "       JL    0b"
+        : "=&d" (result), "=m" (*mem)
+        : "1" (*mem), "d" (val) : "0", "1", "2" );
+  return result;
+}
+
+static inline void
+__attribute__ ((unused))
+atomic_add (volatile uint32_t *mem, int val)
+{
+  __asm__ __volatile__(
+        "       LA    2,%0\n"
+	"0:     L     0,%1\n"
+        "       LR    1,0\n"
+        "       AR    1,%2\n"
+        "       CS    0,1,0(2)\n"
+        "       JL    0b"
+        : "=m" (*mem) : "0" (*mem), "d" (val) : "0", "1", "2" );
+}
+
+static inline int
+__attribute__ ((unused))
+compare_and_swap (volatile long int *p, long int oldval, long int newval)
+{
+  int retval;
+
+  __asm__ __volatile__(
+        "  cs   %2,%3,%1\n"
+        "  ipm  %0\n"
+        "  srl  %0,28\n"
+        "0:"
+        : "=&r" (retval), "+m" (*p)
+        : "d" (oldval) , "d" (newval)
+        : "memory", "cc");
+  return !retval;
+}
+
+#endif /* atomicity.h */
diff --git a/sysdeps/s390/backtrace.c b/sysdeps/s390/backtrace.c
new file mode 100644
index 0000000000..5e7f802810
--- /dev/null
+++ b/sysdeps/s390/backtrace.c
@@ -0,0 +1,81 @@
+/* Return backtrace of current program state.
+   Copyright (C) 2000 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 Library General Public License as
+   published by the Free Software Foundation; either version 2 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
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <execinfo.h>
+#include <stddef.h>
+
+/* This is a global variable set at program start time.  It marks the
+   highest used stack address.  */
+extern void *__libc_stack_end;
+
+
+/* This is the stack layout we see for every non-leaf function.
+           size                    offset
+    %r15 ->    +------------------+
+             4 | back chain       |  0
+             4 | end of stack     |  4
+             8 | glue             |  8
+             8 | scratch          | 16
+            40 | save area r6-r15 | 24
+            16 | save area f4,f6  | 64
+            16 | empty            | 80
+               +------------------+
+   r14 in the save area holds the return address.
+*/
+
+struct layout
+{
+  int back_chain;
+  int end_of_stack;
+  int glue[2];
+  int scratch[2];
+  int save_grps[10];
+  int save_fp[4];
+  int empty[2];
+};
+
+int
+__backtrace (array, size)
+     void **array;
+     int size;
+{
+  /* We assume that all the code is generated with frame pointers set.  */
+  struct layout *stack;
+  int cnt = 0;
+
+  asm ("LR  %0,%%r15" : "=d" (stack) );
+  /* We skip the call to this function, it makes no sense to record it.  */
+  stack = (struct layout *) stack->back_chain;
+  while (cnt < size)
+    {
+      if (stack == NULL || (void *) stack > __libc_stack_end)
+	/* This means the address is out of range.  Note that for the
+	   toplevel we see a frame pointer with value NULL which clearly is
+	   out of range.  */
+	break;
+
+      array[cnt++] = stack->save_grps[9];
+
+      stack = (struct layout *) stack->back_chain;
+    }
+
+  return cnt;
+}
+weak_alias (__backtrace, backtrace)
diff --git a/sysdeps/s390/bcopy.S b/sysdeps/s390/bcopy.S
new file mode 100644
index 0000000000..dafe9ee186
--- /dev/null
+++ b/sysdeps/s390/bcopy.S
@@ -0,0 +1,69 @@
+/* bcopy -- copy a block from source to destination.  For IBM S390
+   This file is part of the GNU C Library.
+   Copyright (C) 2000 Free Software Foundation, Inc.
+   Contributed by Martin Schwidefsky (schwidefsky@de.ibm.com).
+
+   The GNU C Library is free software  ; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation   ; either version 2 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
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+/*
+ * R2 = address of source
+ * R3 = address of destination
+ * R4 = number of bytes to copy
+ */
+
+#include "sysdep.h"
+#include "asm-syntax.h"
+
+        .text
+ENTRY(__bcopy)
+        clr     %r2,%r3             # check against destructive overlap
+        jnl     .L0
+        lr      %r1,%r2
+        alr     %r1,%r4
+        clr     %r1,%r3
+        jh      .L2
+.L0:
+	lr      %r5,%r4		    # source length
+        lr      %r4,%r2             # source address
+        sr      %r1,%r1             # set pad byte to zero
+	lr      %r2,%r3             # set destination
+        lr      %r3,%r5             # destination length = source length
+.L1:    mvcle   %r2,%r4,0(%r1)      # thats it, MVCLE is your friend
+        jo      .L1
+        br      %r14
+.L2:                                # destructive overlay, can not use mvcle
+        lr     %r1,%r2              # bcopy is called with source,dest
+        lr     %r2,%r3              # memmove with dest,source! Oh, well...
+        lr     %r3,%r1
+        basr   %r1,0
+.L3:
+#ifdef PIC
+        al     %r1,.L4-.L3(%r1)     # get address of global offset table
+                                    # load address of memmove
+        l      %r1,memmove@GOT12(%r1)
+        br     %r1
+.L4:    .long  _GLOBAL_OFFSET_TABLE_-.L3
+#else
+        al     %r1,.L4-.L3(%r1)     # load address of memmove
+        br     %r1                  # jump to memmove
+.L4:    .long  memmove-.L3
+#endif
+
+END(__bcopy)
+
+#ifndef NO_WEAK_ALIAS
+weak_alias (__bcopy, bcopy)
+#endif
diff --git a/sysdeps/s390/bits/byteswap.h b/sysdeps/s390/bits/byteswap.h
new file mode 100644
index 0000000000..ad20e97dc6
--- /dev/null
+++ b/sysdeps/s390/bits/byteswap.h
@@ -0,0 +1,86 @@
+/* Macros to swap the order of bytes in integer values.  s390 version.
+   Copyright (C) 2000 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 Library General Public License as
+   published by the Free Software Foundation; either version 2 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
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#if !defined _BYTESWAP_H && !defined _NETINET_IN_H
+# error "Never use <bits/byteswap.h> directly; include <byteswap.h> instead."
+#endif
+
+#define __bswap_constant_16(x) \
+     ((((x) >> 8) & 0xff) | (((x) & 0xff) << 8))
+
+/* Swap bytes in 16 bit value. */
+#if defined __GNUC__ && __GNUC__ >= 2
+# define __bswap_16(x) \
+     (__extension__							      \
+      ({ unsigned short int __v;		                              \
+	 if (__builtin_constant_p (x))					      \
+	   __v = __bswap_constant_16 (x);				      \
+	 else {								      \
+           unsigned short int __tmp = (unsigned short int) (x);               \
+           __asm__ __volatile__ (                                             \
+              "sr   %0,%0\n"                                                  \
+              "la   1,%1\n"                                                   \
+              "icm  %0,2,1(1)\n"                                              \
+              "ic   %0,0(1)"                                                  \
+              : "=&d" (__v) : "m" (__tmp) : "1");                             \
+         }                                                                    \
+	 __v; }))
+#else
+/* This is better than nothing.  */
+#define __bswap_16(x) __bswap_constant_16 (x)
+#endif
+
+/* Swap bytes in 32 bit value.  */
+#define __bswap_constant_32(x) \
+     ((((x) & 0xff000000) >> 24) | (((x) & 0x00ff0000) >>  8) |		      \
+      (((x) & 0x0000ff00) <<  8) | (((x) & 0x000000ff) << 24))
+
+#if defined __GNUC__ && __GNUC__ >= 2
+#  define __bswap_32(x) \
+     (__extension__							      \
+      ({ unsigned int __v;				                      \
+	 if (__builtin_constant_p (x))					      \
+	   __v = __bswap_constant_32 (x);				      \
+	 else {								      \
+           unsigned int __tmp = (unsigned int) (x);                           \
+           __asm__ __volatile__ (                                             \
+              "la    1,%1\n"                                                  \
+              "icm   %0,8,3(1)\n"                                             \
+              "icm   %0,4,2(1)\n"                                             \
+              "icm   %0,2,1(1)\n"                                             \
+              "ic    %0,0(1)"                                                 \
+              : "=&d" (__v) : "m" (__tmp) : "1");                             \
+         }                                                                    \
+	 __v; }))
+#else
+# define __bswap_32(x) __bswap_constant_32 (x)
+#endif
+
+#if defined __GNUC__ && __GNUC__ >= 2
+/* Swap bytes in 64 bit value.  */
+# define __bswap_64(x) \
+  __extension__						\
+  ({ union { unsigned long long int __ll;		\
+	     unsigned long int __l[2]; } __w, __r;	\
+     __w.__ll = (x);					\
+     __r.__l[0] = __bswap_32 (__w.__l[1]);		\
+     __r.__l[1] = __bswap_32 (__w.__l[0]);		\
+     __r.__ll; })
+#endif
diff --git a/sysdeps/s390/bits/endian.h b/sysdeps/s390/bits/endian.h
new file mode 100644
index 0000000000..ac27f0119a
--- /dev/null
+++ b/sysdeps/s390/bits/endian.h
@@ -0,0 +1,7 @@
+/* s390 is big-endian */
+
+#ifndef _ENDIAN_H
+# error "Never use <bits/endian.h> directly; include <endian.h> instead."
+#endif
+
+#define __BYTE_ORDER __BIG_ENDIAN
diff --git a/sysdeps/s390/bits/huge_val.h b/sysdeps/s390/bits/huge_val.h
new file mode 100644
index 0000000000..0c8264c90f
--- /dev/null
+++ b/sysdeps/s390/bits/huge_val.h
@@ -0,0 +1,73 @@
+/* `HUGE_VAL' constants for s390 (where it is infinity).
+   Used by <stdlib.h> and <math.h> functions for overflow.
+   Copyright (C) 2000 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 Library General Public License as
+   published by the Free Software Foundation; either version 2 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
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#ifndef _MATH_H
+# error "Never use <bits/huge_val.h> directly; include <math.h> instead."
+#endif
+
+#include <features.h>
+
+/* IEEE positive infinity (-HUGE_VAL is negative infinity).  */
+
+#if __GNUC_PREREQ(2,96)
+# define HUGE_VAL	(__extension__ 0x1.0p2047)
+#else
+#define	__HUGE_VAL_bytes	{ 0x7f, 0xf0, 0, 0, 0, 0, 0, 0 }
+
+#define __huge_val_t	union { unsigned char __c[8]; double __d; }
+#ifdef	__GNUC__
+# define HUGE_VAL	(__extension__ \
+			 ((__huge_val_t) { __c: __HUGE_VAL_bytes }).__d)
+#else	/* Not GCC.  */
+static __huge_val_t __huge_val = { __HUGE_VAL_bytes };
+# define HUGE_VAL	(__huge_val.__d)
+#endif	/* GCC.  */
+#endif /* GCC 2.95 */
+
+
+/* ISO C 99 extensions: (float) HUGE_VALF and (long double) HUGE_VALL.  */
+
+#ifdef __USE_ISOC99
+
+# if __GNUC_PREREQ(2,96)
+
+#  define HUGE_VALF (__extension__ 0x1.0p255f)
+#  define HUGE_VALL (__extension__ 0x1.0p255f)
+
+# else
+
+# define __HUGE_VALF_bytes	{ 0x7f, 0x80, 0, 0 }
+
+# define __huge_valf_t	union { unsigned char __c[4]; float __f; }
+# ifdef	__GNUC__
+#  define HUGE_VALF	(__extension__ \
+			 ((__huge_valf_t) { __c: __HUGE_VALF_bytes }).__f)
+# else	/* Not GCC.  */
+static __huge_valf_t __huge_valf = { __HUGE_VALF_bytes };
+#  define HUGE_VALF	(__huge_valf.__f)
+# endif	/* GCC.  */
+
+/* On 390 there is no 'long double' format. Make it the same as 'double' */
+# define HUGE_VALL HUGE_VAL
+
+# endif /* GCC 2.95 */
+
+#endif	/* __USE_ISOC99.  */
diff --git a/sysdeps/s390/bits/setjmp.h b/sysdeps/s390/bits/setjmp.h
new file mode 100644
index 0000000000..e778e9c6d5
--- /dev/null
+++ b/sysdeps/s390/bits/setjmp.h
@@ -0,0 +1,52 @@
+/* Copyright (C) 2000 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
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 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
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+/* Define the machine-dependent type `jmp_buf'.  IBM s390 version.  */
+
+#ifndef __S390_SETJMP_H__
+#define __S390_SETJMP_H__
+
+#define	JB_GPR6	  0
+#define JB_GPR7	  1
+#define JB_GPR8	  2
+#define JB_GPR9	  3
+#define JB_GPR10  4
+#define JB_GPR11  5
+#define JB_GPR12  6
+#define JB_GPR13  7
+#define JB_GPR14  8
+#define JB_GPR15  9
+
+#ifndef	_ASM
+
+typedef struct {
+    /* We save registers 6-15 */
+    long int gregs[10];
+
+    /* We save fpu registers 4 and 6 */
+    long long fpregs[2];
+} __jmp_buf[1];
+
+#endif
+
+/* Test if longjmp to JMPBUF would unwind the frame
+   containing a local variable at ADDRESS.  */
+#define _JMPBUF_UNWINDS(jmpbuf, address) \
+  ((int) (address) < (jmpbuf)->gregs[JB_GPR15])
+
+#endif /* __S390_SETJMP_H__ */
diff --git a/sysdeps/s390/bits/string.h b/sysdeps/s390/bits/string.h
new file mode 100644
index 0000000000..4aeb146f3e
--- /dev/null
+++ b/sysdeps/s390/bits/string.h
@@ -0,0 +1,140 @@
+/* Optimized, inlined string functions.  s390 version.
+   Copyright (C) 2000 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 Library General Public License as
+   published by the Free Software Foundation; either version 2 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
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#ifndef _STRING_H
+# error "Never use <bits/string.h> directly; include <string.h> instead."
+#endif
+
+/* The s390 processors can access unaligned multi-byte variables.  */
+#define _STRING_ARCH_unaligned	1
+
+
+/* We only provide optimizations if the user selects them and if
+   GNU CC is used.  */
+#if !defined __NO_STRING_INLINES && defined __USE_STRING_INLINES \
+    && defined __GNUC__ && __GNUC__ >= 2
+
+#ifdef __cplusplus
+# define __STRING_INLINE inline
+#else
+# define __STRING_INLINE extern __inline
+#endif
+
+#define _HAVE_STRING_ARCH_strlen 1
+__STRING_INLINE size_t
+strlen (__const char *__str)
+{
+    size_t __len;
+
+    __asm__ __volatile__ ("   sr    0,0\n"
+                          "   lr    %0,%1\n"
+                          "0: srst  0,%0\n"
+                          "   jo    0b\n"
+                          "   lr    %0,0\n"
+                          "   sr    %0,%1"
+                          : "=&a" (__len) : "a" (__str)
+                          : "cc", "0" );
+    return __len;
+}
+
+/* Copy SRC to DEST.  */
+#define _HAVE_STRING_ARCH_strcpy 1
+__STRING_INLINE char *
+strcpy (char *__dest, __const char *__src)
+{
+    char *tmp = __dest;
+
+    __asm__ __volatile__ ("   sr    0,0\n"
+                          "0: mvst  %0,%1\n"
+                          "   jo    0b"
+                          : "+&a" (__dest), "+&a" (__src) :
+                          : "cc", "memory", "0" );
+    return tmp;
+}
+
+#define _HAVE_STRING_ARCH_strncpy 1
+__STRING_INLINE char *
+strncpy (char *__dest, __const char *__src, size_t __n)
+{
+    char *tmp = __dest;
+
+    if (__n <= 0)
+        return tmp;
+    __asm__ __volatile ("   slr  %0,%1\n"
+                        "0: icm  0,1,0(%1)\n"
+                        "   stc  0,0(%0,%1)\n"
+                        "   jz   2f\n"
+                        "   la   %1,1(%1)\n"
+                        "   brct %2,0b\n"
+			"   j    3f\n"
+			"1: la   %1,1(%1)\n"
+			"   stc  0,0(%0,%1)\n"
+			"2: brct %2,1b\n"
+                        "3:"
+                        : "+&a" (__dest), "+&a" (__src), "+&d" (__n) :
+                        : "cc", "memory", "0" );
+    return tmp;
+}
+
+/* Append SRC onto DEST.  */
+#define _HAVE_STRING_ARCH_strcat 1
+__STRING_INLINE char *
+strcat(char *__dest, const char *__src)
+{
+    char *tmp = __dest;
+
+    __asm__ __volatile__ ("   sr   0,0\n"
+                          "0: srst 0,%0\n"
+                          "   jo   0b\n"
+                          "   lr   %0,0\n"
+                          "   sr   0,0\n"
+                          "1: mvst %0,%1\n"
+                          "   jo   1b"
+                          : "+&a" (__dest), "+&a" (__src) :
+                          : "cc", "memory", "0" );
+    return tmp;
+}
+
+/* Append no more than N characters from SRC onto DEST.  */
+#define _HAVE_STRING_ARCH_strncat 1
+__STRING_INLINE char *
+strncat (char *__dest, __const char *__src, size_t __n)
+{
+    char *tmp = __dest;
+
+    if (__n <= 0)
+        return tmp;
+    __asm__ __volatile__ ("   sr   0,0\n"
+                          "0: srst 0,%0\n"
+                          "   jo   0b\n"
+                          "   lr   %0,0\n"
+                          "   slr  %0,%1\n"
+			  "1: icm  0,1,0(%1)\n"
+			  "   stc  0,0(%0,%1)\n"
+			  "   jz   2f\n"
+			  "   la   %1,1(%1)\n"
+			  "   brct %2,1b\n"
+			  "2:"
+                          : "+&a" (__dest), "+&a" (__src), "+&d" (__n) :
+                          : "cc", "memory", "0" );
+    return tmp;
+}
+
+#endif	/* Use string inlines && GNU CC.  */
diff --git a/sysdeps/s390/bsd-_setjmp.S b/sysdeps/s390/bsd-_setjmp.S
new file mode 100644
index 0000000000..2b664409de
--- /dev/null
+++ b/sysdeps/s390/bsd-_setjmp.S
@@ -0,0 +1,46 @@
+/* BSD `setjmp' entry point to `sigsetjmp (..., 1)'.  s390 version.
+   Copyright (C) 2000 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 Library General Public License as
+   published by the Free Software Foundation   ; either version 2 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
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+/* This just does a tail-call to `__sigsetjmp (ARG, 0)'.
+   We cannot do it in C because it must be a tail-call, so frame-unwinding
+   in setjmp doesn't clobber the state restored by longjmp.  */
+
+#include <sysdep.h>
+
+ENTRY(_setjmp)
+#ifdef 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)
+        lhi    %r3,0                /* second argument of one */
+        br     %r1
+.L1:    .long  _GLOBAL_OFFSET_TABLE_ - .L0
+#else
+        basr   %r1,0
+.L0:    l      %r1,.L1 - .L0(0,%r1) /* load address of __sigsetjmp */
+        lhi    %r3,0                /* second argument of zero */
+        br     %r1                  /* branch to __sigsetjmp */
+.L1:    .long  __sigsetjmp
+#endif
+END (_setjmp)
diff --git a/sysdeps/s390/bsd-setjmp.S b/sysdeps/s390/bsd-setjmp.S
new file mode 100644
index 0000000000..ab5aa0c663
--- /dev/null
+++ b/sysdeps/s390/bsd-setjmp.S
@@ -0,0 +1,46 @@
+/* BSD `setjmp' entry point to `sigsetjmp (..., 1)'.  s390 version.
+   Copyright (C) 2000 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 Library General Public License as
+   published by the Free Software Foundation   ; either version 2 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
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+/* This just does a tail-call to `__sigsetjmp (ARG, 1)'.
+   We cannot do it in C because it must be a tail-call, so frame-unwinding
+   in setjmp doesn't clobber the state restored by longjmp.  */
+
+#include <sysdep.h>
+
+ENTRY(setjmp)
+#ifdef 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)
+	lhi    %r3,1                /* second argument of one */
+	br     %r1
+.L1:    .long  _GLOBAL_OFFSET_TABLE_ - .L0
+#else
+	basr   %r1,0
+.L0:    l      %r1,.L1 - .L0(0,%r1) /* load address of __sigsetjmp */
+	lhi    %r3,1                /* second argument of zero */
+	br     %r1                  /* branch to __sigsetjmp */
+.L1:    .long  __sigsetjmp
+#endif
+END (setjmp)
diff --git a/sysdeps/s390/bzero.S b/sysdeps/s390/bzero.S
new file mode 100644
index 0000000000..4d0db82fa0
--- /dev/null
+++ b/sysdeps/s390/bzero.S
@@ -0,0 +1,43 @@
+/* bzero -- set a block of memory to zero.  IBM S390 version
+   This file is part of the GNU C Library.
+   Copyright (C) 2000 Free Software Foundation, Inc.
+   Contributed by Martin Schwidefsky (schwidefsky@de.ibm.com).
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 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
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+/*
+ * R2 = address to memory area
+ * R3 = number of bytes to fill
+ */
+
+#include "sysdep.h"
+#include "asm-syntax.h"
+
+	.text
+ENTRY(__bzero)
+	ltr     %r3,%r3
+	jz      .L1
+	sr      %r1,%r1             # set pad byte to zero
+	sr      %r4,%r4             # no source for MVCLE, only a pad byte
+	sr      %r5,%r5
+.L0:    mvcle   %r2,%r4,0(%r1)      # thats it, MVCLE is your friend
+	jo      .L0
+.L1:    br      %r14
+END(__bzero)
+
+#ifndef NO_WEAK_ALIAS
+weak_alias (__bzero, bzero)
+#endif
diff --git a/sysdeps/s390/dl-machine.h b/sysdeps/s390/dl-machine.h
new file mode 100644
index 0000000000..3cab824ce2
--- /dev/null
+++ b/sysdeps/s390/dl-machine.h
@@ -0,0 +1,464 @@
+/* Machine-dependent ELF dynamic relocation inline functions.  S390 Version.
+   Copyright (C) 2000 Free Software Foundation, Inc.
+   Contributed by Carl Pederson & Martin Schwidefsky.
+   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 Library General Public License as
+   published by the Free Software Foundation; either version 2 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
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If
+   not, write to the Free Software Foundation, Inc.,
+   59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
+
+#ifndef dl_machine_h
+#define dl_machine_h
+
+
+#define ELF_MACHINE_NAME "s390"
+
+#include <sys/param.h>
+#include <string.h>
+#include <link.h>
+
+
+/* Return nonzero iff E_MACHINE is compatible with the running host.  */
+static inline int
+elf_machine_matches_host (Elf32_Half e_machine)
+{
+  switch (e_machine)
+    {
+    case EM_S390:
+      return 1;
+    default:
+      return 0;
+    }
+}
+
+
+/* Return the link-time address of _DYNAMIC.  Conveniently, this is the
+   first element of the GOT.  This must be inlined in a function which
+   uses global data.  */
+
+static inline Elf32_Addr
+elf_machine_dynamic (void)
+{
+  register Elf32_Addr *got;
+
+  asm( "        bras   %0,2f\n"
+       "1:      .long  _GLOBAL_OFFSET_TABLE_-1b\n"
+       "2:      al     %0,0(%0)"
+       : "=&a" (got) : : "0" );
+
+  return *got;
+}
+
+
+/* Return the run-time load address of the shared object.  */
+static inline Elf32_Addr
+elf_machine_load_address (void)
+{
+  Elf32_Addr addr;
+
+  asm( "   bras  1,2f\n"
+       "1: .long _GLOBAL_OFFSET_TABLE_ - 1b\n"
+       "   .long _dl_start - 1b - 0x80000000\n"
+       "2: l     %0,4(1)\n"
+       "   ar    %0,1\n"
+       "   al    1,0(1)\n"
+       "   sl    %0,_dl_start@GOT12(1)"
+       : "=&d" (addr) : : "1" );
+  return addr;
+}
+
+/* Set up the loaded object described by L so its unrelocated PLT
+   entries will jump to the on-demand fixup code in dl-runtime.c.  */
+
+static inline int __attribute__ ((unused))
+elf_machine_runtime_setup (struct link_map *l, int lazy, int profile)
+{
+  extern void _dl_runtime_resolve (Elf32_Word);
+  extern void _dl_runtime_profile (Elf32_Word);
+
+  if (l->l_info[DT_JMPREL] && lazy)
+    {
+      /* The GOT entries for functions in the PLT have not yet been filled
+	 in.  Their initial contents will arrange when called to push an
+	 offset into the .rel.plt section, push _GLOBAL_OFFSET_TABLE_[1],
+	 and then jump to _GLOBAL_OFFSET_TABLE[2].  */
+      Elf32_Addr *got;
+      got = (Elf32_Addr *) D_PTR (l, l_info[DT_PLTGOT]);
+      got[1] = (Elf32_Addr) l;	/* Identify this shared object.  */
+
+      /* The got[2] entry contains the address of a function which gets
+	 called to get the address of a so far unresolved function and
+	 jump to it.  The profiling extension of the dynamic linker allows
+	 to intercept the calls to collect information.  In this case we
+	 don't store the address in the GOT so that all future calls also
+	 end in this function.  */
+      if (__builtin_expect (profile, 0))
+	{
+	  got[2] = (Elf32_Addr) &_dl_runtime_profile;
+
+	  if (_dl_name_match_p (_dl_profile, l))
+	    /* This is the object we are looking for.  Say that we really
+	       want profiling and the timers are started.  */
+	    _dl_profile_map = l;
+	}
+      else
+	/* This function will get called to fix up the GOT entry indicated by
+	   the offset on the stack, and then jump to the resolved address.  */
+	got[2] = (Elf32_Addr) &_dl_runtime_resolve;
+    }
+
+  return lazy;
+}
+
+/* This code is used in dl-runtime.c to call the `fixup' function
+   and then redirect to the address it returns.  */
+
+/* s390:
+   Arguments are in register.
+   r2 - r7 holds the original parameters for the function call, fixup
+   and trampoline code use r0-r5 and r14-15. For the correct function
+   call r2-r5 and r14-15 must be restored.
+   Arguments from the PLT are stored at 24(r15) and 28(r15)
+   and must be moved to r2 and r3 for the fixup call (see elf32-s390.c
+   in the binutils for the PLT code).
+   Fixup function address in r2.
+*/
+#ifndef PROF
+#define ELF_MACHINE_RUNTIME_TRAMPOLINE \
+  asm ( "\
+    .text\n\
+    .globl _dl_runtime_resolve\n\
+    .type _dl_runtime_resolve, @function\n\
+    .align 16\n\
+_dl_runtime_resolve:\n\
+    # save registers\n\
+    stm    2,5,32(15)\n\
+    st     14,48(15)\n\
+    lr     0,15\n\
+    ahi    15,-96\n\
+    st     0,0(15)\n\
+    # load args saved by PLT\n\
+    lm     2,3,120(15)\n\
+    basr   1,0\n\
+0:  ahi    1,1f-0b\n\
+    l      14,0(1)\n\
+    bas    14,0(14,1)   # call fixup\n\
+    lr     1,2          # function addr returned in r2\n\
+    # restore registers\n\
+    ahi    15,96\n\
+    l      14,48(15)\n\
+    lm     2,5,32(15)\n\
+    br     1\n\
+1:  .long  fixup-1b\n\
+    .size _dl_runtime_resolve, .-_dl_runtime_resolve\n\
+\n\
+    .globl _dl_runtime_profile\n\
+    .type _dl_runtime_profile, @function\n\
+    .align 16\n\
+_dl_runtime_profile:\n\
+    # save registers\n\
+    stm    2,5,32(15)\n\
+    st     14,48(15)\n\
+    lr     0,15\n\
+    ahi    15,-96\n\
+    st     0,0(15)\n\
+    # load args saved by PLT\n\
+    lm     2,3,120(15)\n\
+    # load return address as third parameter\n\
+    lr     4,14\n\
+    basr   1,0\n\
+0:  ahi    1,1f-0b\n\
+    l      14,0(1)\n\
+    bas    14,0(14,1)   # call fixup\n\
+    lr     1,2          # function addr returned in r2\n\
+    # restore registers\n\
+    ahi    15,96\n\
+    l      14,48(15)\n\
+    lm     2,5,32(15)\n\
+    br     1\n\
+1:  .long  profile_fixup-1b\n\
+    .size _dl_runtime_profile, .-_dl_runtime_profile\n\
+");
+#else
+#define ELF_MACHINE_RUNTIME_TRAMPOLINE \
+  asm ( "\
+    .text\n\
+    .globl _dl_runtime_resolve\n\
+    .globl _dl_runtime_profile\n\
+    .type _dl_runtime_resolve, @function\n\
+    .type _dl_runtime_profile, @function\n\
+    .align 16\n\
+_dl_runtime_resolve:\n\
+_dl_runtime_profile:\n\
+    # save registers\n\
+    stm    2,5,32(15)\n\
+    st     14,48(15)\n\
+    lr     0,15\n\
+    ahi    15,-96\n\
+    st     0,0(15)\n\
+    # load args saved by PLT\n\
+    lm     2,3,120(15)\n\
+    # load return address as third parameter\n\
+    lr     4,14\n\
+    basr   1,0\n\
+0:  ahi    1,1f-0b\n\
+    l      14,0(1)\n\
+    bas    14,0(14,1)   # call fixup\n\
+    lr     1,2          # function addr returned in r2\n\
+    # restore registers\n\
+    ahi    15,96\n\
+    l      14,48(15)\n\
+    lm     2,5,32(15)\n\
+    br     1\n\
+1:  .long  fixup-1b\n\
+    .size _dl_runtime_resolve, .-_dl_runtime_resolve\n\
+    .size _dl_runtime_profile, .-_dl_runtime_profile\n\
+");
+#endif
+
+/* The PLT uses Elf32_Rela relocs.  */
+#define elf_machine_relplt elf_machine_rela
+
+/* Mask identifying addresses reserved for the user program,
+   where the dynamic linker should not map anything.  */
+#define ELF_MACHINE_USER_ADDRESS_MASK   0xf8000000UL
+
+/* Initial entry point code for the dynamic linker.
+   The C function `_dl_start' is the real entry point;
+   its return value is the user program's entry point.  */
+
+#define RTLD_START asm ("\n\
+.text\n\
+.align 4\n\
+.globl _start\n\
+.globl _dl_start_user\n\
+_start:\n\
+	basr  %r13,0\n\
+.L0:    ahi   %r13,.Llit-.L0\n\
+	lr    %r2,%r15\n\
+	# Alloc stack frame\n\
+	ahi   %r15,-96\n\
+	# Set the back chain to zero\n\
+	xc    0(4,%r15),0(%r15)\n\
+	# Call _dl_start with %r2 pointing to arg on stack\n\
+	l     %r14,.Ladr1-.Llit(%r13)\n\
+	bas   %r14,0(%r14,%r13)   # call _dl_start\n\
+_dl_start_user:\n\
+	# Save the user entry point address in %r8.\n\
+	lr    %r8,%r2\n\
+	# Point %r12 at the GOT.\n\
+	l     %r12,.Ladr0-.Llit(%r13)\n\
+	ar    %r12,%r13\n\
+	# Store the highest stack address\n\
+	l     %r1,__libc_stack_end@GOT(%r12)\n\
+	st    %r15, 0(%r1)\n\
+	# See if we were run as a command with the executable file\n\
+	# name as an extra leading argument.\n\
+	l     %r1,_dl_skip_args@GOT12(0,%r12)\n\
+	l     %r1,0(%r1)          # load _dl_skip_args\n\
+	# Get the original argument count.\n\
+	l     %r0,96(%r15)\n\
+	# Subtract _dl_skip_args from it.\n\
+	sr    %r0,%r1\n\
+	# Adjust the stack pointer to skip _dl_skip_args words.\n\
+	sll   %r1,2\n\
+	ar    %r15,%r1\n\
+	# Set the back chain to zero again\n\
+	xc    0(4,%r15),0(%r15)\n\
+	# Store back the modified argument count.\n\
+	st    %r0,96(%r15)\n\
+	# The special initializer gets called with the stack just\n\
+	# as the application's entry point will see it; it can\n\
+	# switch stacks if it moves these contents over.\n\
+" RTLD_START_SPECIAL_INIT "\n\
+	# Call the function to run the initializers.\n\
+	# Load the parameters:\n\
+	# (%r2, %r3, %r4, %r5) = (_dl_loaded, argc, argv, envp)\n\
+	l     %r2,_dl_loaded@GOT(%r12)\n\
+	l     %r2,0(%r2)\n\
+	l     %r3,96(%r15)\n\
+	la    %r4,100(%r15)\n\
+	lr    %r5,%r3\n\
+	sll   %r5,2\n\
+	la    %r5,104(%r5,%r15)\n\
+	l     %r1,.Ladr4-.Llit(%r13)\n\
+	bas   %r14,0(%r1,%r13)\n\
+	# Pass our finalizer function to the user in %r14, as per ELF ABI.\n\
+	l     %r14,_dl_fini@GOT(%r12)\n\
+	# Free stack frame\n\
+	ahi   %r15,96\n\
+	# Jump to the user's entry point (saved in %r8).\n\
+	br    %r8\n\
+.Llit:\n\
+.Ladr0: .long _GLOBAL_OFFSET_TABLE_-.Llit\n\
+.Ladr1: .long _dl_start-.Llit\n\
+.Ladr4: .long _dl_init@PLT-.Llit\n\
+");
+
+#ifndef RTLD_START_SPECIAL_INIT
+#define RTLD_START_SPECIAL_INIT /* nothing */
+#endif
+
+/* Nonzero iff TYPE describes relocation of a PLT entry, so
+   PLT entries should not be allowed to define the value.  */
+#define elf_machine_pltrel_p(type) ((type) == R_390_JMP_SLOT)
+
+/* Nonzero iff TYPE should not be allowed to resolve to one of
+   the main executable's symbols, as for a COPY reloc.  */
+#define elf_machine_lookup_noexec_p(type) ((type) == R_390_COPY)
+
+/* Nonzero iff TYPE describes relocation of a PLT entry, so
+   PLT entries should not be allowed to define the value.  */
+#define elf_machine_lookup_noplt_p(type) ((type) == R_390_JMP_SLOT)
+
+/* A reloc type used for ld.so cmdline arg lookups to reject PLT entries.  */
+#define ELF_MACHINE_JMP_SLOT    R_390_JMP_SLOT
+
+/* The S390 never uses Elf32_Rel relocations.  */
+#define ELF_MACHINE_NO_REL 1
+
+/* The S390 overlaps DT_RELA and DT_PLTREL.  */
+#define ELF_MACHINE_PLTREL_OVERLAP 1
+
+/* We define an initialization functions.  This is called very early in
+   _dl_sysdep_start.  */
+#define DL_PLATFORM_INIT dl_platform_init ()
+
+extern const char *_dl_platform;
+
+static inline void __attribute__ ((unused))
+dl_platform_init (void)
+{
+  if (_dl_platform != NULL && *_dl_platform == '\0')
+    /* Avoid an empty string which would disturb us.  */
+    _dl_platform = NULL;
+}
+
+static inline Elf32_Addr
+elf_machine_fixup_plt (struct link_map *map, lookup_t t,
+		       const Elf32_Rela *reloc,
+		       Elf32_Addr *reloc_addr, Elf32_Addr value)
+{
+  return *reloc_addr = value;
+}
+
+/* Return the final value of a plt relocation.  */
+static inline Elf32_Addr
+elf_machine_plt_value (struct link_map *map, const Elf32_Rela *reloc,
+		       Elf32_Addr value)
+{
+  return value;
+}
+
+#endif /* !dl_machine_h */
+
+
+#ifdef RESOLVE
+
+/* Perform the relocation specified by RELOC and SYM (which is fully resolved).
+   MAP is the object containing the reloc.  */
+
+static inline void
+elf_machine_rela (struct link_map *map, const Elf32_Rela *reloc,
+		 const Elf32_Sym *sym, const struct r_found_version *version,
+		  Elf32_Addr *const reloc_addr)
+{
+  if (ELF32_R_TYPE (reloc->r_info) == R_390_RELATIVE) {
+#ifndef RTLD_BOOTSTRAP
+    if (map != &_dl_rtld_map) /* Already done in rtld itself.  */
+#endif
+      *reloc_addr = map->l_addr + reloc->r_addend;
+  }
+  else if (ELF32_R_TYPE (reloc->r_info) != R_390_NONE)
+    {
+      const Elf32_Sym *const refsym = sym;
+      Elf32_Addr value = RESOLVE (&sym, version, ELF32_R_TYPE (reloc->r_info));
+      if (sym)
+	value += sym->st_value;
+
+      switch (ELF32_R_TYPE (reloc->r_info))
+	{
+	case R_390_COPY:
+	  if (sym == NULL)
+	    /* This can happen in trace mode if an object could not be
+	       found.  */
+	    break;
+	  if (__builtin_expect (sym->st_size > refsym->st_size, 0)
+	      || (__builtin_expect (sym->st_size < refsym->st_size, 0)
+		  && __builtin_expect (_dl_verbose, 0)))
+	    {
+	      const char *strtab;
+
+	      strtab = (const char *) D_PTR(map,l_info[DT_STRTAB]);
+	      _dl_sysdep_error (_dl_argv[0] ?: "<program name unknown>",
+				": Symbol `", strtab + refsym->st_name,
+				"' has different size in shared object, "
+				"consider re-linking\n", NULL);
+	    }
+	  memcpy (reloc_addr, (void *) value, MIN (sym->st_size,
+						   refsym->st_size));
+	  break;
+	case R_390_GLOB_DAT:
+	case R_390_JMP_SLOT:
+	  *reloc_addr = value;
+	  break;
+	case R_390_32:
+	  {
+#ifndef RTLD_BOOTSTRAP
+	   /* This is defined in rtld.c, but nowhere in the static
+	      libc.a; make the reference weak so static programs can
+	      still link.  This declaration cannot be done when
+	      compiling rtld.c (i.e.  #ifdef RTLD_BOOTSTRAP) because
+	      rtld.c contains the common defn for _dl_rtld_map, which
+	      is incompatible with a weak decl in the same file.  */
+	    weak_extern (_dl_rtld_map);
+	    if (map == &_dl_rtld_map)
+	      /* Undo the relocation done here during bootstrapping.
+		 Now we will relocate it anew, possibly using a
+		 binding found in the user program or a loaded library
+		 rather than the dynamic linker's built-in definitions
+		 used while loading those libraries.  */
+	      value -= map->l_addr + refsym->st_value;
+#endif
+	    *reloc_addr = value + reloc->r_addend;
+	    break;
+	  }
+
+	case R_390_PC32:
+	  *reloc_addr = value +reloc->r_addend - (Elf32_Addr) reloc_addr;
+	  break;
+	case R_390_NONE:
+	  break;
+	default:
+	  _dl_reloc_bad_type (map, ELFW(R_TYPE) (reloc->r_info), 0);
+	  break;
+	}
+    }
+}
+
+
+static inline void
+elf_machine_lazy_rel (struct link_map *map,
+		      Elf32_Addr l_addr, const Elf32_Rela *reloc)
+{
+  Elf32_Addr *const reloc_addr = (void *) (l_addr + reloc->r_offset);
+  /* Check for unexpected PLT reloc type.  */
+  if (__builtin_expect (ELF32_R_TYPE (reloc->r_info), R_390_JMP_SLOT)
+      == R_390_JMP_SLOT)
+    *reloc_addr += l_addr;
+  else
+    _dl_reloc_bad_type (map, ELFW(R_TYPE) (reloc->r_info), 1);
+}
+
+#endif /* RESOLVE */
diff --git a/sysdeps/s390/elf/bsd-_setjmp.S b/sysdeps/s390/elf/bsd-_setjmp.S
new file mode 100644
index 0000000000..1417270201
--- /dev/null
+++ b/sysdeps/s390/elf/bsd-_setjmp.S
@@ -0,0 +1 @@
+/* We don't need any code here since the setjmp.S file contains it.  */
diff --git a/sysdeps/s390/elf/bsd-setjmp.S b/sysdeps/s390/elf/bsd-setjmp.S
new file mode 100644
index 0000000000..1417270201
--- /dev/null
+++ b/sysdeps/s390/elf/bsd-setjmp.S
@@ -0,0 +1 @@
+/* We don't need any code here since the setjmp.S file contains it.  */
diff --git a/sysdeps/s390/elf/setjmp.S b/sysdeps/s390/elf/setjmp.S
new file mode 100644
index 0000000000..952cba2102
--- /dev/null
+++ b/sysdeps/s390/elf/setjmp.S
@@ -0,0 +1,58 @@
+/* setjmp for s390, ELF version.
+   Copyright (C) 2000 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 Library General Public License as
+   published by the Free Software Foundation; either version 2 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
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <sysdep.h>
+#define _ASM
+#define _SETJMP_H
+#include <bits/setjmp.h>
+
+	/* 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      __sigsetjmp          /* branch relativ to __sigsetjmp */
+END (setjmp)
+
+	/* Binary compatibility entry point.  */
+ENTRY(_setjmp)
+	.weak  C_SYMBOL_NAME (_setjmp)
+ENTRY(__setjmp)
+	lhi    %r3,0                /* second argument of zero */
+
+ENTRY(__sigsetjmp)
+	stm    %r6,%r15,0(%r2)      /* store registers in jmp_buf */
+#ifdef 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)
diff --git a/sysdeps/s390/elf/start.S b/sysdeps/s390/elf/start.S
new file mode 100644
index 0000000000..1455572af8
--- /dev/null
+++ b/sysdeps/s390/elf/start.S
@@ -0,0 +1,95 @@
+/* Startup code compliant to the ELF s390 ABI.
+   Copyright (C) 2000 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 Library General Public License as
+   published by the Free Software Foundation; either version 2 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
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+/*
+   This is the canonical entry point, usually the first thing in the text
+   segment. Most registers' values are unspecified, except for:
+
+   %r14         Contains a function pointer to be registered with `atexit'.
+		This is how the dynamic linker arranges to have DT_FINI
+		functions called for shared libraries that have been loaded
+		before this code runs.
+
+   %r15		The stack contains the arguments and environment:
+		0(%r15)			argc
+		4(%r15)			argv[0]
+		...
+		(4*argc)(%r15)		NULL
+		(4*(argc+1))(%r15)	envp[0]
+		...
+					NULL
+*/
+
+	.text
+	.globl _start
+_start:
+	/* Setup pointer to literal pool of _start */
+	basr    %r13,0
+.L0:    ahi     %r13,.Llit-.L0
+
+	/* load argc and argv from stack */
+	la      %r4,4(%r15)             # get argv
+	l       %r3,0(%r15)             # get argc
+
+	/* align the stack to a double word boundary */
+	lhi     %r0,-8
+	nr      %r15,%r0
+
+	/* Setup a stack frame and a parameter area */
+	ahi     %r15,-104               # make room on stack
+	xc      0(4,%r15),0(%r15)       # clear back-chain
+
+	/* set up arguments for __libc_start_main:
+	   main, argc, argv, envp, _init, _fini, rtld_fini, stack_end
+	   Note that envp will be determined later in __libc_start_main
+	 */
+	stm     %r14,%r15,96(%r15)      # store rtld_fini/stack_end to parameter area
+	la      %r7,96(%r15)
+	l       %r6,.L2-.Llit(%r13)     # load pointer to _fini
+	l       %r5,.L1-.Llit(%r13)     # load pointer to _init
+	l       %r2,.L3-.Llit(%r13)     # load pointer to main
+
+	/* ok, now branch to the libc main routine */
+	l       %r1,.L4-.Llit(%r13)
+	basr    %r14,%r1
+
+	/* crash if __libc_start_main returns */
+	.word   0
+
+.Llit:
+.L1:    .long  _init
+.L2:    .long  _fini
+.L3:    .long  main
+.L4:    .long  __libc_start_main
+
+/* FIXME: FPU flags or what ?!? */
+
+	.section .rodata
+	.globl _fp_hw
+	.long 3
+	.size _fp_hw, 4
+
+/* Define a symbol for the first piece of initialized data.  */
+	.data
+	.globl __data_start
+__data_start:
+	.long 0
+	.weak data_start
+	data_start = __data_start
diff --git a/sysdeps/s390/ffs.c b/sysdeps/s390/ffs.c
new file mode 100644
index 0000000000..b6ed821e58
--- /dev/null
+++ b/sysdeps/s390/ffs.c
@@ -0,0 +1,68 @@
+/* ffs -- find first set bit in a word, counted from least significant end.
+   This file is part of the GNU C Library.
+   Copyright (C) 2000 Free Software Foundation, Inc.
+   Contributed by Martin Schwidefsky (schwidefsky@de.ibm.com).
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 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
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#define ffsl __something_else
+#include <string.h>
+
+#undef	ffs
+
+/*
+ * ffs: find first bit set. This is defined the same way as
+ * the libc and compiler builtin ffs routines, therefore
+ * differs in spirit from the above ffz (man ffs).
+ */
+
+int
+__ffs (x)
+     int x;
+{
+  int r;
+
+  if (x == 0)
+    return 0;
+  __asm__("    lr   %%r1,%1\n"
+	  "    sr   %0,%0\n"
+	  "    tml  %%r1,0xFFFF\n"
+	  "    jnz  0f\n"
+	  "    ahi  %0,16\n"
+	  "    srl  %%r1,16\n"
+	  "0:  tml  %%r1,0x00FF\n"
+	  "    jnz  1f\n"
+	  "    ahi  %0,8\n"
+	  "    srl  %%r1,8\n"
+	  "1:  tml  %%r1,0x000F\n"
+	  "    jnz  2f\n"
+	  "    ahi  %0,4\n"
+	  "    srl  %%r1,4\n"
+	  "2:  tml  %%r1,0x0003\n"
+	  "    jnz  3f\n"
+	  "    ahi  %0,2\n"
+	  "    srl  %%r1,2\n"
+	  "3:  tml  %%r1,0x0001\n"
+	  "    jnz  4f\n"
+	  "    ahi  %0,1\n"
+	  "4:"
+	  : "=&d" (r) : "d" (x) : "cc", "1" );
+  return r+1;
+}
+
+weak_alias (__ffs, ffs)
+#undef ffsl
+weak_alias (__ffs, ffsl)
diff --git a/sysdeps/s390/fpu/bits/fenv.h b/sysdeps/s390/fpu/bits/fenv.h
new file mode 100644
index 0000000000..81732b9972
--- /dev/null
+++ b/sysdeps/s390/fpu/bits/fenv.h
@@ -0,0 +1,90 @@
+/* Copyright (C) 2000 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Denis Joseph Barrow (djbarrow@de.ibm.com).
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 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
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.
+
+ */
+
+#ifndef _FENV_H
+# error "Never use <bits/fenv.h> directly; include <fenv.h> instead."
+#endif
+
+/* Define bits representing the exception.  We use the bit positions
+   of the appropriate bits in the FPU control word.  */
+enum
+  {
+    FE_INVALID = 0x80,
+#define FE_INVALID	FE_INVALID
+    FE_DIVBYZERO = 0x40,
+#define FE_DIVBYZERO	FE_DIVBYZERO
+    FE_OVERFLOW = 0x20,
+#define FE_OVERFLOW	FE_OVERFLOW
+    FE_UNDERFLOW = 0x10,
+#define FE_UNDERFLOW	FE_UNDERFLOW
+    FE_INEXACT = 0x08
+#define FE_INEXACT	FE_INEXACT
+  };
+/* We dont use the y bit of the DXC in the floating point control register
+ * as glibc has no FE encoding for fe inexact incremented
+ * or fe inexact truncated.
+ * We currently  use the flag bits in the fpc
+ * as these are sticky for feholdenv & feupdatenv as it is defined
+ * in the HP Manpages.
+ */
+
+
+#define FE_ALL_EXCEPT \
+	(FE_INEXACT | FE_DIVBYZERO | FE_UNDERFLOW | FE_OVERFLOW | FE_INVALID)
+
+enum
+  {
+    FE_TONEAREST = 0,
+#define FE_TONEAREST	FE_TONEAREST
+    FE_DOWNWARD = 0x3,
+#define FE_DOWNWARD	FE_DOWNWARD
+    FE_UPWARD = 0x2,
+#define FE_UPWARD	FE_UPWARD
+    FE_TOWARDZERO = 0x1
+#define FE_TOWARDZERO	FE_TOWARDZERO
+  };
+
+#define FPC_EXCEPTION_MASK_SHIFT  24
+#define FPC_FLAGS_SHIFT           16
+#define FPC_DXC_SHIFT             8
+#define FPC_NOT_FPU_EXCEPTION     0x300
+
+
+/* Type representing exception flags.  */
+typedef unsigned int fexcept_t; /* size of fpc */
+
+
+/* Type representing floating-point environment.  This function corresponds
+   to the layout of the block written by the `fstenv'.  */
+typedef struct
+{
+	fexcept_t fpc;
+	void *ieee_instruction_pointer;
+	/* failing instruction for ieee exceptions */
+} fenv_t;
+
+/* If the default argument is used we use this value.  */
+#define FE_DFL_ENV	((fenv_t *) -1)
+
+#ifdef __USE_GNU
+/* Floating-point environment where none of the exceptions are masked.  */
+#define FE_NOMASK_ENV	((fenv_t *) -2)
+#endif
diff --git a/sysdeps/s390/fpu/fclrexcpt.c b/sysdeps/s390/fpu/fclrexcpt.c
new file mode 100644
index 0000000000..aa159fd282
--- /dev/null
+++ b/sysdeps/s390/fpu/fclrexcpt.c
@@ -0,0 +1,40 @@
+/* Clear given exceptions in current floating-point environment.
+   Copyright (C) 2000 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
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 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
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <fenv.h>
+#include <fpu_control.h>
+
+int
+feclearexcept (int excepts)
+{
+  fexcept_t temp;
+
+  /* Mask out unsupported bits/exceptions.  */
+  excepts &= FE_ALL_EXCEPT;
+
+  _FPU_GETCW(temp);
+  /* Clear the relevant bits.  */
+  temp &= ~((excepts<<FPC_DXC_SHIFT)|(excepts<<FPC_FLAGS_SHIFT));
+
+  /* Put the new data in effect.  */
+  _FPU_SETCW(temp);
+
+  /* Success.  */
+  return 0;
+}
diff --git a/sysdeps/s390/fpu/fegetround.c b/sysdeps/s390/fpu/fegetround.c
new file mode 100644
index 0000000000..3742588629
--- /dev/null
+++ b/sysdeps/s390/fpu/fegetround.c
@@ -0,0 +1,35 @@
+/* Return current rounding direction.
+   Copyright (C) 2000 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Denis Joseph Barrow (djbarrow@de.ibm.com)
+
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 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
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <fenv.h>
+#include <fpu_control.h>
+
+int
+fegetround (void)
+{
+  fexcept_t cw;
+
+  _FPU_GETCW(cw);
+
+  return cw & FPC_RM_MASK;
+}
+
+
diff --git a/sysdeps/s390/fpu/fesetround.c b/sysdeps/s390/fpu/fesetround.c
new file mode 100644
index 0000000000..ba8c1b0be3
--- /dev/null
+++ b/sysdeps/s390/fpu/fesetround.c
@@ -0,0 +1,37 @@
+/* Set current rounding direction.
+   Copyright (C) 2000 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Denis Joseph Barrow (djbarrow@de.ibm.com)
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 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
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <fenv.h>
+#include <fpu_control.h>
+
+int
+fesetround (int round)
+{
+  if ((round|FPC_RM_MASK) != FPC_RM_MASK)
+    {
+      /* ROUND is not a valid rounding mode.  */
+      return 1;
+    }
+  __asm__ volatile ("srnm 0(%0)"
+		    :
+		    : "a" (round));
+  
+  return 0;
+}
diff --git a/sysdeps/s390/fpu/fgetexcptflg.c b/sysdeps/s390/fpu/fgetexcptflg.c
new file mode 100644
index 0000000000..d4a49d6731
--- /dev/null
+++ b/sysdeps/s390/fpu/fgetexcptflg.c
@@ -0,0 +1,46 @@
+/* Store current representation for exceptions.
+   Copyright (C) 1997 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 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
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  
+
+   Contributed by:
+   Denis Joseph Barrow (djbarrow@de.ibm.com,barrow_dj@yahoo.com)
+*/
+
+#include <fenv.h>
+#include <fpu_control.h>
+
+int fegetexceptflag (fexcept_t *flagp, int excepts)
+{
+	fexcept_t temp,newexcepts;
+	
+	/* Get the current exceptions.  */
+	_FPU_GETCW(temp);
+	newexcepts=((excepts<<FPC_DXC_SHIFT)|(excepts<<FPC_FLAGS_SHIFT));
+	*flagp = temp & newexcepts;
+
+	/* Success.  */
+	return 0;
+}
+
+
+
+
+
+
+
diff --git a/sysdeps/s390/fpu/fpu_control.h b/sysdeps/s390/fpu/fpu_control.h
new file mode 100644
index 0000000000..7552cfa8ff
--- /dev/null
+++ b/sysdeps/s390/fpu/fpu_control.h
@@ -0,0 +1,47 @@
+/* FPU control word definitions.  Stub version.
+   Copyright (C) 1999 Free Software Foundation, Inc.
+   Contributed by 
+   Denis Joseph Barrow (djbarrow@de.ibm.com,barrow_dj@yahoo.com) and
+   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 Library General Public License as
+   published by the Free Software Foundation; either version 2 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
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#ifndef _FPU_CONTROL_H
+# define _FPU_CONTROL_H
+
+# include <features.h>
+
+/* These bits are reserved are not changed.  */
+# define _FPU_RESERVED 0x070700FC
+
+/* The fdlibm code requires no interrupts for exceptions.  Don't
+   change the rounding mode, it would break long double I/O!  */
+#define _FPU_DEFAULT  0x00000000 /* Default value.  */
+
+/* Type of the control word.  */
+typedef unsigned int fpu_control_t;
+
+/* Macros for accessing the hardware control word.  */
+#define _FPU_GETCW(cw)  __asm__ volatile ("efpc %0,0" : "=d" (cw)) 
+#define _FPU_SETCW(cw)  __asm__ volatile ("sfpc  %0,0" : : "d" (cw)) 
+
+/* Default control word set at startup.  */
+extern fpu_control_t __fpu_control;
+
+#endif /* _FPU_CONTROL_H */
+
+
+
diff --git a/sysdeps/s390/gmp-mparam.h b/sysdeps/s390/gmp-mparam.h
new file mode 100644
index 0000000000..8de5b8de14
--- /dev/null
+++ b/sysdeps/s390/gmp-mparam.h
@@ -0,0 +1,29 @@
+/* gmp-mparam.h -- Compiler/machine parameter header file.
+   Copyright (C) 2000 Free Software Foundation, Inc.
+   Contributed by Martin Schwidefsky (schwidefsky@de.ibm.com).
+
+   This file is part of the GNU MP Library.
+
+   The GNU MP Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU MP 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
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.
+
+#define BITS_PER_MP_LIMB 32
+#define BYTES_PER_MP_LIMB 4
+#define BITS_PER_LONGINT 32
+#define BITS_PER_INT 32
+#define BITS_PER_SHORTINT 16
+#define BITS_PER_CHAR 8
+
+#define IEEE_DOUBLE_BIG_ENDIAN 0
diff --git a/sysdeps/s390/ldbl2mpn.c b/sysdeps/s390/ldbl2mpn.c
new file mode 100644
index 0000000000..631fe2eab4
--- /dev/null
+++ b/sysdeps/s390/ldbl2mpn.c
@@ -0,0 +1,101 @@
+/* Copyright (C) 1995, 1996, 1997 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
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 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
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include "gmp.h"
+#include "gmp-impl.h"
+#include "longlong.h"
+#include "ieee754.h"
+#include <float.h>
+#include <stdlib.h>
+
+/* Convert a `long double' in IEEE854 standard double-precision format to a
+   multi-precision integer representing the significand scaled up by its
+   number of bits (64 for long double) and an integral power of two
+   (MPN frexpl). */
+
+mp_size_t
+__mpn_extract_long_double (mp_ptr res_ptr, mp_size_t size,
+			   int *expt, int *is_neg,
+			   long double value)
+{
+  union ieee854_long_double u;
+  u.d = value;
+
+  *is_neg = u.ieee.negative;
+  *expt = (int) u.ieee.exponent - IEEE854_LONG_DOUBLE_BIAS;
+
+#if BITS_PER_MP_LIMB == 32
+  res_ptr[0] = u.ieee.mantissa1; /* Low-order 32 bits of fraction.  */
+  res_ptr[1] = u.ieee.mantissa0; /* High-order 32 bits.  */
+  #define N 2
+#elif BITS_PER_MP_LIMB == 64
+  /* Hopefully the compiler will combine the two bitfield extracts
+     and this composition into just the original quadword extract.  */
+  res_ptr[0] = ((unsigned long int) u.ieee.mantissa0 << 32) | u.ieee.mantissa1;
+  #define N 1
+#else
+  #error "mp_limb size " BITS_PER_MP_LIMB "not accounted for"
+#endif
+
+  if (u.ieee.exponent == 0)
+    {
+      /* A biased exponent of zero is a special case.
+	 Either it is a zero or it is a denormal number.  */
+      if (res_ptr[0] == 0 && res_ptr[N - 1] == 0) /* Assumes N<=2.  */
+	/* It's zero.  */
+	*expt = 0;
+      else
+	{
+	  /* It is a denormal number, meaning it has no implicit leading
+	     one bit, and its exponent is in fact the format minimum.  */
+	  int cnt;
+
+	  /* One problem with Intel's 80-bit format is that the explicit
+	     leading one in the normalized representation has to be zero
+	     for denormalized number.  If it is one, the number is according
+	     to Intel's specification an invalid number.  We make the
+	     representation unique by explicitly clearing this bit.  */
+	  res_ptr[N - 1] &= ~(1L << ((LDBL_MANT_DIG - 1) % BITS_PER_MP_LIMB));
+
+	  if (res_ptr[N - 1] != 0)
+	    {
+	      count_leading_zeros (cnt, res_ptr[N - 1]);
+	      if (cnt != 0)
+		{
+#if N == 2
+		  res_ptr[N - 1] = res_ptr[N - 1] << cnt
+				   | (res_ptr[0] >> (BITS_PER_MP_LIMB - cnt));
+		  res_ptr[0] <<= cnt;
+#else
+		  res_ptr[N - 1] <<= cnt;
+#endif
+		}
+	      *expt = LDBL_MIN_EXP - 1 - cnt;
+	    }
+	  else
+	    {
+	      count_leading_zeros (cnt, res_ptr[0]);
+	      res_ptr[N - 1] = res_ptr[0] << cnt;
+	      res_ptr[0] = 0;
+	      *expt = LDBL_MIN_EXP - 1 - BITS_PER_MP_LIMB - cnt;
+	    }
+	}
+    }
+
+  return N;
+}
diff --git a/sysdeps/s390/machine-gmon.h b/sysdeps/s390/machine-gmon.h
new file mode 100644
index 0000000000..019baae46e
--- /dev/null
+++ b/sysdeps/s390/machine-gmon.h
@@ -0,0 +1,36 @@
+/* s390-specific implementation of profiling support.
+   Copyright (C) 2000 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
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 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
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <sysdep.h>
+
+/* We need a special version of the `mcount' function since for S/390 it
+   must not clobber any register. */
+
+/* We must not pollute the global namespace.  */
+#define mcount_internal __mcount_internal
+
+void mcount_internal (u_long frompc, u_long selfpc);
+
+#define _MCOUNT_DECL(frompc, selfpc) \
+void mcount_internal (u_long frompc, u_long selfpc)
+
+
+/* Define MCOUNT as empty since we have the implementation in another
+   file.  */
+#define MCOUNT
diff --git a/sysdeps/s390/memchr.S b/sysdeps/s390/memchr.S
new file mode 100644
index 0000000000..72b4682745
--- /dev/null
+++ b/sysdeps/s390/memchr.S
@@ -0,0 +1,40 @@
+/* Search a character in a block of memory.  For IBM S390
+   Copyright (C) 2000 Free Software Foundation, Inc.
+   Contributed by Martin Schwidefsky (schwidefsky@de.ibm.com).
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 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
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+/*
+ * R2 = address to memory area
+ * R3 = character to find
+ * R4 = number of bytes to search
+ */
+
+#include "sysdep.h"
+#include "asm-syntax.h"
+
+	.text
+ENTRY(memchr)
+	lhi   %r0,0xff
+	nr    %r0,%r3
+	lr    %r1,%r2
+	la    %r2,0(%r4,%r1)
+0:      srst  %r2,%r1
+	jo    0b
+	brc   13,1f
+	slr   %r2,%r2
+1:      br    %r14
+END(memchr)
diff --git a/sysdeps/s390/memcpy.S b/sysdeps/s390/memcpy.S
new file mode 100644
index 0000000000..94119ea0e1
--- /dev/null
+++ b/sysdeps/s390/memcpy.S
@@ -0,0 +1,41 @@
+/* Set a block of memory to some byte value.  For IBM S390
+   Copyright (C) 2000 Free Software Foundation, Inc.
+   Contributed by Martin Schwidefsky (schwidefsky@de.ibm.com).
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 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
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+/*
+ * R2 = address to destination memory area
+ * R3 = address to source memory area
+ * R4 = number of bytes to copy
+ */
+
+#include "sysdep.h"
+#include "asm-syntax.h"
+
+	.text
+ENTRY(memcpy)
+	ltr     %r5,%r4
+	jz      .L1
+	lr      %r4,%r3             # %r4/%r5 = source ptr/len
+	lr      %r3,%r5             # %r2/%r3 = dest ptr/len
+	lr      %r0,%r2             # save source address
+.L0:    mvcle   %r2,%r4,0           # thats it, MVCLE is your friend
+	jo      .L0
+	lr      %r2,%r0             # return value is source address
+.L1:
+	br      %r14
+END(memset)
diff --git a/sysdeps/s390/memset.S b/sysdeps/s390/memset.S
new file mode 100644
index 0000000000..e917fe031b
--- /dev/null
+++ b/sysdeps/s390/memset.S
@@ -0,0 +1,43 @@
+/* Set a block of memory to some byte value.  For IBM S390
+   Copyright (C) 2000 Free Software Foundation, Inc.
+   Contributed by Martin Schwidefsky (schwidefsky@de.ibm.com).
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 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
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+/*
+ * R2 = address to memory area
+ * R3 = byte to fill memory with
+ * R4 = number of bytes to fill
+ */
+
+#include "sysdep.h"
+#include "asm-syntax.h"
+
+	.text
+ENTRY(memset)
+	ltr     %r4,%r4
+	jz      .L1
+	lr      %r0,%r2             # save source address
+	lr      %r1,%r3             # move pad byte to R1
+	lr      %r3,%r4
+	sr      %r4,%r4             # no source for MVCLE, only a pad byte
+	sr      %r5,%r5
+.L0:    mvcle   %r2,%r4,0(%r1)      # thats it, MVCLE is your friend
+	jo      .L0
+	lr      %r2,%r0             # return value is source address
+.L1:
+	br      %r14
+END(memset)
diff --git a/sysdeps/s390/memusage.h b/sysdeps/s390/memusage.h
new file mode 100644
index 0000000000..d34f42c44f
--- /dev/null
+++ b/sysdeps/s390/memusage.h
@@ -0,0 +1,21 @@
+/* Copyright (C) 2000 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
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 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
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#define GETSP() ({ register uintptr_t stack_ptr asm ("15"); stack_ptr; })
+
+#include <sysdeps/generic/memusage.h>
diff --git a/sysdeps/s390/mul_1.S b/sysdeps/s390/mul_1.S
new file mode 100644
index 0000000000..1804114741
--- /dev/null
+++ b/sysdeps/s390/mul_1.S
@@ -0,0 +1,55 @@
+/* i80386 __mpn_mul_1 -- Multiply a limb vector with a limb and store
+   the result in a second limb vector.
+   Copyright (C) 2000 Free Software Foundation, Inc.
+   Contributed by Martin Schwidefsky (schwidefsky@de.ibm.com).
+   This file is part of the GNU MP Library.
+
+   The GNU MP Library is free software; you can redistribute it and/or modify
+   it under the terms of the GNU Library General Public License as published by
+   the Free Software Foundation; either version 2 of the License, or (at your
+   option) any later version.
+
+   The GNU MP 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 Library General Public
+   License for more details.
+
+   You should have received a copy of the GNU Library General Public License
+   along with the GNU MP Library; see the file COPYING.LIB.  If not, write to
+   the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
+   MA 02111-1307, USA.  */
+
+/*
+   INPUT PARAMETERS
+   res_ptr   %r2
+   s1_ptr    %r3
+   size	     %r4
+   s2_limb   %r5
+*/
+
+#include <sysdep.h>
+#include "asm-syntax.h"
+
+	.text
+ENTRY(__mpn_mul_1)
+	st     %r6,24(%r15)
+	slr    %r6,%r6            # cy_limb = 0
+.L0:    icm    %r1,15,0(%r3)      # get s1_ptr[i]
+	mr     %r0,%r5            # umul_ppmm(prod_high,prod_low,s1_ptr[j],s2_limb)
+	jnm    .L1
+	alr    %r0,%r5
+.L1:    ltr    %r5,%r5
+	jnm    .L2
+	al     %r0,0(%r3)
+.L2:    alr    %r1,%r6            # prod_low += cy_limb
+	lr     %r6,%r0            # cy_limb = prod_high
+	brc    12,.L3
+	ahi    %r6,1              #           + (prod_low < cy_limb)
+.L3:    st     %r1,0(%r2)
+	la     %r2,4(0,%r2)
+	la     %r3,4(0,%r3)
+	brct   %r4,.L0
+	lr     %r2,%r6            # return cy_limb
+	l      %r6,24(%r15)
+.Lexit: br     %r14
+END(__mpn_mul_1)
diff --git a/sysdeps/s390/s390-mcount.S b/sysdeps/s390/s390-mcount.S
new file mode 100644
index 0000000000..e7c16b7052
--- /dev/null
+++ b/sysdeps/s390/s390-mcount.S
@@ -0,0 +1,84 @@
+/* S/390-specific implemetation of profiling support.
+   Copyright (C) 2000 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Martin Schwidefsky (schwidefsky@de.ibm.com)
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 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
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <sysdep.h>
+
+/*
+ * How profiling works on S/390:
+ * On the start of each function _mcount is called with the address of a
+ * data word in %r1 (initialized to 0, used for counting). The compiler
+ * with the option -p generates code of the form:
+ *
+ *         STM    6,15,24(15)
+ *         BRAS   13,.LTN0_0
+ * .LT0_0:
+ * .LC12:  .long  _mcount
+ * .LC13:  .long  .LP0
+ *         .data
+ *         .align 4
+ * .LP0:   .long  0
+ *         .text
+ * # function profiler
+ *         st     14,4(15)
+ *         l      14,.LC12-.LT0_0(13)
+ *         l      1,.LC13-.LT0_0(13)
+ *         basr   14,14
+ *         l      14,4(15)
+ *
+ * The _mcount implementation now has to call __mcount_internal with the
+ * address of .LP0 as first parameter and the return address as second
+ * parameter. &.LP0 was loaded to %r1 and the return address is in %r14.
+ * _mcount may not modify any register.
+ */
+
+	ASM_GLOBAL_DIRECTIVE C_SYMBOL_NAME(_mcount)
+	ASM_TYPE_DIRECTIVE(C_SYMBOL_NAME(_mcount), @function)
+	.align ALIGNARG(4)
+C_LABEL(_mcount)
+	/* Save the caller-clobbered registers.  */
+	ahi   %r15,-128
+	stm   %r14,%r5,96(%r15)
+	l     %r2,132(%r15)       # callers address  = first parameter
+	la    %r2,0(%r2)          # clear bit 0
+	la    %r3,0(%r14)         # callees address  = second parameter
+
+#ifdef PIC
+	bras  %r14,0f
+	.long _GLOBAL_OFFSET_TABLE_-.
+0:	al    %r14,0(%r14)
+	l     %r14,__mcount_internal@GOT(%r14)
+#else
+	bras  %r14,0f
+	.long __mcount_internal
+0:      l     %r14,0(%r14)
+#endif
+	basr  %r14,%r14
+
+	/*
+	 * Pop the saved registers.  Please note that `mcount' has no
+	 * return value.
+	 */
+	lm    %r14,%r5,96(%r15)
+	ahi   %r15,128
+	br    %r14
+	ASM_SIZE_DIRECTIVE(C_SYMBOL_NAME(_mcount))
+
+#undef mcount
+weak_alias(_mcount, mcount)
diff --git a/sysdeps/s390/setjmp.S b/sysdeps/s390/setjmp.S
new file mode 100644
index 0000000000..af3d3601f4
--- /dev/null
+++ b/sysdeps/s390/setjmp.S
@@ -0,0 +1,55 @@
+/*
+   Copyright (C) 2000 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 Library General Public License as
+   published by the Free Software Foundation; either version 2 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
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#ifndef _ASM
+#define _ASM
+#endif
+
+#include <sysdep.h>
+#include <bits/setjmp.h>
+
+/* Save the current program position in ENV and return 0.  */
+/* R2 = pointer to jmp_buf, R3 = savemask */
+
+/* Binary compatibility entry point. */
+
+ENTRY(__setjmp)
+	sr     %r3,%r3              /* set savemask to zero */
+END (__setjmp)
+
+ENTRY(__sigsetjmp)
+	stm    %r6,%r15,0(%r2)      /* store registers in jmp_buf */
+#ifdef 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)
diff --git a/sysdeps/s390/stackinfo.h b/sysdeps/s390/stackinfo.h
new file mode 100644
index 0000000000..f1bd9bd5e7
--- /dev/null
+++ b/sysdeps/s390/stackinfo.h
@@ -0,0 +1,28 @@
+/* Copyright (C) 2000 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
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 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
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+/* This file contains a bit of information about the stack allocation
+   of the processor.  */
+
+#ifndef _STACKINFO_H
+#define _STACKINFO_H	1
+
+/* On s390 the stack grows down.  */
+#define _STACK_GROWS_DOWN	1
+
+#endif	/* stackinfo.h */
diff --git a/sysdeps/s390/strcpy.S b/sysdeps/s390/strcpy.S
new file mode 100644
index 0000000000..fedefd8f31
--- /dev/null
+++ b/sysdeps/s390/strcpy.S
@@ -0,0 +1,36 @@
+/* strcpy - copy a string from source to destination. For IBM S390
+   This file is part of the GNU C Library.
+   Copyright (C) 2000 Free Software Foundation, Inc.
+   Contributed by Martin Schwidefsky (schwidefsky@de.ibm.com).
+
+   The GNU C Library is free software  ; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation   ; either version 2 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
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+/*
+ * R2 = address of destination
+ * R3 = address of source
+ */
+
+#include "sysdep.h"
+#include "asm-syntax.h"
+
+	.text
+ENTRY(strcpy)
+	slr   %r0,%r0
+	lr    %r1,%r2
+0:      mvst  %r1,%r3
+	jo    0b
+	br    %r14
+END(strcpy)
diff --git a/sysdeps/s390/strncpy.S b/sysdeps/s390/strncpy.S
new file mode 100644
index 0000000000..823eeb4f5e
--- /dev/null
+++ b/sysdeps/s390/strncpy.S
@@ -0,0 +1,79 @@
+/* strncpy - copy at most n characters from a string from source to
+   destination.  For IBM S390
+   This file is part of the GNU C Library.
+   Copyright (C) 2000 Free Software Foundation, Inc.
+   Contributed by Martin Schwidefsky (schwidefsky@de.ibm.com).
+
+   The GNU C Library is free software  ; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation   ; either version 2 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
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+/*
+ * R2 = address of destination (dst)
+ * R3 = address of source (src)
+ * R4 = max of bytes to copy
+ */
+
+#include "sysdep.h"
+#include "asm-syntax.h"
+
+ENTRY(strncpy)
+	.text
+	st    %r2,24(%r15)          # save dst pointer
+	slr   %r2,%r3               # %r3 points to src, %r2+%r3 to dst
+	lhi   %r1,3
+	nr    %r1,%r4               # last 2 bits of # bytes
+	srl   %r4,2
+	ltr   %r4,%r4               # less than 4 bytes to copy ?
+	jz    .L1
+	bras  %r5,.L0               # enter loop & load address of a 0
+	.long 0
+.L0:    icm   %r0,8,0(%r3)          # first byte
+	jz    .L3
+	icm   %r0,4,1(%r3)          # second byte
+	jz    .L4
+	icm   %r0,2,2(%r3)          # third byte
+	jz    .L5
+	icm   %r0,1,3(%r3)          # fourth byte
+	jz    .L6
+	st    %r0,0(%r2,%r3)        # store all four to dest.
+	la    %r3,4(%r3)
+	brct  %r4,.L0
+.L1:    ltr   %r1,%r1
+	jz    .Lexit
+.L2:    icm   %r0,1,0(%r3)
+	stc   %r0,0(%r2,%r3)
+	la    %r3,1(%r3)
+	jz    .L7
+	brct  %r1,.L2
+	j     .Lexit
+.L3:    icm   %r0,4,0(%r5)
+.L4:    icm   %r0,2,0(%r5)
+.L5:    icm   %r0,1,0(%r5)
+.L6:    st    %r0,0(%r2,%r3)
+	la    %r3,4(%r3)
+	ahi   %r4,-1
+	j     .L8
+.L7:    ahi   %r1,-1
+.L8:    sll   %r4,2
+	alr   %r4,%r1
+	alr   %r2,%r3               # start of dst area to be zeroed
+	lr    %r3,%r4
+	slr   %r4,%r4
+	slr   %r5,%r5
+.L9:    mvcle %r2,%r4,0             # pad dst with zeroes
+	jo    .L9
+.Lexit: l     %r2,24(%r15)          # return dst pointer
+	br    %r14
+END(strncpy)
diff --git a/sysdeps/s390/sub_n.S b/sysdeps/s390/sub_n.S
new file mode 100644
index 0000000000..5eee0fb13d
--- /dev/null
+++ b/sysdeps/s390/sub_n.S
@@ -0,0 +1,62 @@
+/* i80386 __mpn_sub_n -- Add two limb vectors of the same length > 0 and store
+   sum in a third limb vector.
+   Copyright (C) 2000 Free Software Foundation, Inc.
+   Contributed by Martin Schwidefsky (schwidefsky@de.ibm.com).
+   This file is part of the GNU MP Library.
+
+   The GNU MP Library is free software; you can redistribute it and/or modify
+   it under the terms of the GNU Library General Public License as published by
+   the Free Software Foundation; either version 2 of the License, or (at your
+   option) any later version.
+
+   The GNU MP 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 Library General Public
+   License for more details.
+
+   You should have received a copy of the GNU Library General Public License
+   along with the GNU MP Library; see the file COPYING.LIB.  If not, write to
+   the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
+   MA 02111-1307, USA. */
+
+/*
+  INPUT PARAMETERS
+  res_ptr	%r2
+  s1_ptr	%r3
+  s2_ptr	%r4
+  size		%r5
+*/
+
+#include "sysdep.h"
+#include "asm-syntax.h"
+
+ENTRY(__mpn_sub_n)
+	st     %r6,24(%r15)   # save register 6
+	sr     %r1,%r1
+	lhi    %r0,1          # cannot use ahi to add carry, use slr
+.L0:    l      %r6,0(%r1,%r3) # .L0 -> no carry from last sub
+	sl     %r6,0(%r1,%r4)
+	st     %r6,0(%r1,%r2)
+	la     %r1,4(0,%r1)
+	brc    4,.L3
+.L1:    brct   %r5,.L0
+	slr    %r2,%r2        # no last carry to return
+	j      .Lexit
+.L2:    l      %r6,0(%r1,%r3) # .L2 -> carry from last sub
+	sl     %r6,0(%r1,%r4)
+	brc    4,.L4
+	slr    %r6,%r0        # no carry yet, add carry from last sub
+	st     %r6,0(%r1,%r2)
+	la     %r1,4(0,%r1)
+	brc    11,.L1         # new carry ?
+.L3:    brct   %r5,.L2
+	lr     %r2,%r0        # return last carry
+	j      .Lexit
+.L4:    slr    %r6,%r0        # already a carry, add carry from last sub
+	st     %r6,0(%r1,%r2)
+	la     %r1,4(0,%r1)
+	brct   %r5,.L2
+	lr     %r2,%r0        # return last carry
+.Lexit: l      %r6,24(%r15)   # restore register 6
+	br     %r14
+END(__mpn_sub_n)
diff --git a/sysdeps/s390/sys/ucontext.h b/sysdeps/s390/sys/ucontext.h
new file mode 100644
index 0000000000..c00bb5c786
--- /dev/null
+++ b/sysdeps/s390/sys/ucontext.h
@@ -0,0 +1,95 @@
+/* Copyright (C) 2000 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 Library General Public License as
+   published by the Free Software Foundation; either version 2 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
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+/* System V/s390 ABI compliant context switching support.  */
+
+#ifndef _SYS_UCONTEXT_H
+#define _SYS_UCONTEXT_H	1
+
+#include <features.h>
+#include <signal.h>
+
+/* Type for general register.  */
+typedef int greg_t;
+
+/* Number of general registers.  */
+#define NGREG	16
+
+/* Number of each register is the `greg_t gregs[NREG]' array.  */
+enum
+{
+  R_GPR0 = 0,
+#define R_GPR0	R_GPR0
+  R_GPR1 = 1,
+#define R_GPR1	R_GPR1
+  R_GPR2 = 2,
+#define R_GPR2	R_GPR2
+  R_GPR3 = 3,
+#define R_GPR3	R_GPR3
+  R_GPR4 = 4,
+#define R_GPR4	R_GPR4
+  R_GPR5 = 5,
+#define R_GPR5	R_GPR5
+  R_GPR6 = 6,
+#define R_GPR6	R_GPR6
+  R_GPR7 = 7,
+#define R_GPR7	R_GPR7
+  R_GPR8 = 8,
+#define R_GPR8	R_GPR8
+  R_GPR9 = 9,
+#define R_GPR9	R_GPR9
+  R_GPRA = 10,
+#define R_GPRA	R_GPRA
+  R_GPRB = 11,
+#define R_GPRB	R_GPRB
+  R_GPRC = 12,
+#define R_GPRC	R_GPRC
+  R_GPRD = 13,
+#define R_GPRD	R_GPRD
+  R_GPRE = 14,
+#define R_GPRE	R_GPRE
+  R_GPRF = 15
+#define R_GPRF	R_GPRF
+};
+
+/* Structure to describe FPU registers.  */
+typedef long long fpreg_t;
+
+/* Context to describe whole processor state.  */
+typedef struct
+{
+  int version;
+  greg_t gregs[NGREG];
+  fpreg_t fpregs[16];
+} mcontext_t;
+
+#define MCONTEXT_VERSION 1
+
+/* Userlevel context.  */
+typedef struct ucontext
+{
+  unsigned long int uc_flags;
+  struct ucontext *uc_links;
+  __sigset_t uc_sigmask;
+  stack_t uc_stack;
+  mcontext_t uc_mcontext;
+  long int uc_filler[170];
+} ucontext_t;
+
+#endif /* sys/ucontext.h */
diff --git a/sysdeps/s390/sysdep.h b/sysdeps/s390/sysdep.h
new file mode 100644
index 0000000000..6915379de4
--- /dev/null
+++ b/sysdeps/s390/sysdep.h
@@ -0,0 +1,121 @@
+/* Assembler macros for s390.
+   Copyright (C) 2000 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 Library General Public License as
+   published by the Free Software Foundation; either version 2 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
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <sysdeps/generic/sysdep.h>
+
+#ifdef	__ASSEMBLER__
+
+/* Syntactic details of assembler.  */
+
+#ifdef HAVE_ELF
+
+/* ELF uses byte-counts for .align, most others use log2 of count of bytes.  */
+#define ALIGNARG(log2) 1<<log2
+/* For ELF we need the `.type' directive to make shared libs work right.  */
+#define ASM_TYPE_DIRECTIVE(name,typearg) .type name,typearg;
+#define ASM_SIZE_DIRECTIVE(name) .size name,.-name;
+
+/* In ELF C symbols are asm symbols.  */
+#undef	NO_UNDERSCORES
+#define NO_UNDERSCORES
+
+#else
+
+#define ALIGNARG(log2) log2
+#define ASM_TYPE_DIRECTIVE(name,type)	/* Nothing is specified.  */
+#define ASM_SIZE_DIRECTIVE(name)	/* Nothing is specified.  */
+
+#endif
+
+
+/* Define an entry point visible from C. */
+#define	ENTRY(name)							      \
+  ASM_GLOBAL_DIRECTIVE C_SYMBOL_NAME(name);				      \
+  ASM_TYPE_DIRECTIVE (C_SYMBOL_NAME(name),@function)			      \
+  .align ALIGNARG(2);							      \
+  C_LABEL(name)								      \
+  CALL_MCOUNT
+
+#undef	END
+#define END(name)							      \
+  ASM_SIZE_DIRECTIVE(name)						      \
+
+/* If compiled for profiling, call `mcount' at the start of each function.  */
+#ifdef	PROF
+#ifdef PIC
+#define CALL_MCOUNT \
+  lr 0,14 ; bras 14,.+12 ; .long _GLOBAL_OFFSET_TABLE_ - . ; .long 0f-. ; \
+  lr 1,14 ; al 1,4(14) ; al 14,0(14) ; l 14,_mcount@GOT(14) ; \
+  basr 14,14 ; lr 14,0 ; .data ; .align 4 ; 0: .long 0 ; .text ;
+#else
+#define CALL_MCOUNT \
+  lr 0,14 ; bras 14,.+12 ; .long _mcount ; .long 0f ; \
+  l 1,4(14) ; l 14,0(14) ; basr 14,14 ; lr 14,0 ; \
+  .data ; .align 4 ; 0: .long 0 ; .text ;
+#endif
+#else
+#define CALL_MCOUNT		/* Do nothing.  */
+#endif
+
+#ifdef	NO_UNDERSCORES
+/* Since C identifiers are not normally prefixed with an underscore
+   on this system, the asm identifier `syscall_error' intrudes on the
+   C name space.  Make sure we use an innocuous name.  */
+#define	syscall_error	__syscall_error
+#define mcount		_mcount
+#endif
+
+#define	PSEUDO(name, syscall_name, args)				      \
+lose: SYSCALL_PIC_SETUP							      \
+  JUMPTARGET(syscall_error)						      \
+  .globl syscall_error;							      \
+  ENTRY (name)								      \
+  DO_CALL (syscall_name, args);						      \
+  jm lose
+
+#undef	PSEUDO_END
+#define	PSEUDO_END(name)						      \
+  END (name)
+
+#ifdef PIC
+#define JUMPTARGET(name)  \
+    basr %r1,0            \
+0:  al   %r1,1f-0b(0,%r1) \
+    br   %r1              \
+1:  .long name##@PLT - 0b
+#define SYSCALL_PIC_SETUP             \
+    bras  %r12,1f                     \
+0:  .long _GLOBAL_OFFSET_TABLE_-0b    \
+1:  al    %r12,0(%r12)
+#else
+#define JUMPTARGET(name)   \
+    basr  %r1,0            \
+0:  al    %r1,1f-0b(0,%r1) \
+    br    %r1              \
+1:  .long name - 0b
+#define SYSCALL_PIC_SETUP	/* Nothing.  */
+#endif
+
+/* Local label name for asm code. */
+#ifndef L
+#define L(name)		name
+#endif
+
+#endif	/* __ASSEMBLER__ */
author	Andreas Jaeger <aj@suse.de>	2000-08-02 15:15:00 +0000
committer	Andreas Jaeger <aj@suse.de>	2000-08-02 15:15:00 +0000
commit	847b055c6567cbe6e154b2006a0a77ed0f48d623 (patch)
tree	dda802aa998b6d196d48893932488d2906724f5d /sysdeps/s390
parent	9016e55cb809f98e9fd890010ca1eaf35fd616a2 (diff)
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