Update.

2001-04-04  Ulrich Drepper  <drepper@redhat.com>

	* sysdeps/unix/sysv/linux/s390/s390-64/Dist: Add ucontext_i.h.
	* sysdeps/unix/sysv/linux/s390/s390-32/Dist: Likewise.

2001-04-04  Martin Schwidefsky  <schwidefsky@de.ibm.com>

	* sysdeps/unix/sysv/linux/s390/s390-32/getcontext.S: New file.
	* sysdeps/unix/sysv/linux/s390/s390-32/makecontext.c: New file.
	* sysdeps/unix/sysv/linux/s390/s390-32/setcontext.S: New file.
	* sysdeps/unix/sysv/linux/s390/s390-32/ucontext_i.h: New file.
	* sysdeps/unix/sysv/linux/s390/s390-64/getcontext.S: New file.
	* sysdeps/unix/sysv/linux/s390/s390-64/makecontext.c: New file.
	* sysdeps/unix/sysv/linux/s390/s390-64/setcontext.S: New file.
	* sysdeps/unix/sysv/linux/s390/s390-64/ucontext_i.h: New file.
	* sysdeps/unix/sysv/linux/s390/swapcontext.c: New file.

	* sunrpc/rpc_scan.c (symbols): Add entry for HYPER.
	* sunrpc/rpc_scan.h (enum tok_kind): Add TOK_HYPER.
	* sunrpc/rpc_parse.c (get_type): Handle TOK_HYPER.
	(unsigned_dec): Likewise.
	Patch by atai@jezebel.dreamhost.com.

1 files changed, 100 insertions, 0 deletions

diff --git a/sysdeps/unix/sysv/linux/s390/s390-64/makecontext.c b/sysdeps/unix/sysv/linux/s390/s390-64/makecontext.c
new file mode 100644
index 0000000..6e0478c
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/s390/s390-64/makecontext.c
@@ -0,0 +1,100 @@
+/* Copyright (C) 2001 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 <libintl.h>
+#include <stdarg.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <ucontext.h>
+
+/* This implementation can handle any ARGC value but only
+   normal integer type parameters. Parameters of type float,
+   double, complex and structure with sizes 0, 2, 4 or 8
+   won't work.
+   makecontext sets up a stack and the registers for the
+   user context. The stack looks like this:
+           size                         offset
+    %r15 ->    +-----------------------+
+             8 | back chain (zero)     |  0
+             8 | reserved              |  8
+           144 | save area for (*func) | 16
+               +-----------------------+
+             n | overflow parameters   | 160
+               +-----------------------+
+             8 | trampoline            | 160+n
+               +-----------------------+
+   The registers are set up like this:
+     %r2-%r6: parameters 1 to 5
+     %r7    : (*func) pointer
+     %r8    : uc_link from ucontext structure
+     %r9    : address of setcontext
+     %r14   : return address to uc_link trampoline
+     %r15   : stack pointer.
+
+   The trampoline looks like this:
+     basr  %r14,%r7
+     lgr   %r2,%r8
+     br    %r9.  */
+
+void
+__makecontext (ucontext_t *ucp, void (*func) (void), int argc, ...)
+{
+  unsigned long *sp;
+  va_list ap;
+  int i;
+
+  sp = (long *) (((long) ucp->uc_stack.ss_sp + ucp->uc_stack.ss_size) & -8L);
+
+  /* Setup the trampoline.  */
+  *--sp = 0x0de7b904002807f9;
+
+  /* Set the return address to trampoline.  */
+  ucp->uc_mcontext.gregs[14] = (long) sp;
+
+  /* Set register parameters.  */
+  va_start (ap, argc);
+  for (i = 0; (i < argc) && (i < 5); i++)
+    ucp->uc_mcontext.gregs[2+i] = va_arg (ap, long);
+
+  /* The remaining arguments go to the overflow area.  */
+  if (argc > 5) {
+    sp -= argc - 5;
+    for (i = 5; i < argc; i++)
+      sp[i] = va_arg(ap, long);
+  }
+  va_end (ap);
+
+  /* Make room for the save area and set the backchain.  */
+  sp -= 20;
+  *sp = 0;
+
+  /* Pass (*func) to __start_context in %r7.  */
+  ucp->uc_mcontext.gregs[7] = (long) func;
+
+  /* Pass ucp->uc_link to __start_context in %r8.  */
+  ucp->uc_mcontext.gregs[8] = (long) ucp->uc_link;
+
+  /* Pass address of setcontext in %r9.  */
+  ucp->uc_mcontext.gregs[9] = (long) &setcontext;
+
+  /* Set stack pointer.  */
+  ucp->uc_mcontext.gregs[15] = (long) sp;
+}
+
+weak_alias (__makecontext, makecontext)