Merged changes from kopensolaris-gnu project

http://git.csclub.uwaterloo.ca/?p=kopensolaris-gnu/glibc.git

Commits from 9157319 to bad8ac8.

This is only partial patch, some changes to not apply
and will be resovled and committed next.

1 files changed, 50 insertions, 0 deletions

diff --git a/sysdeps/unix/sysv/solaris2/kopensolaris-gnu/i386/makecontext.c b/sysdeps/unix/sysv/solaris2/kopensolaris-gnu/i386/makecontext.c
new file mode 100644
index 0000000000..2fcdb8f0d6
--- /dev/null
+++ b/sysdeps/unix/sysv/solaris2/kopensolaris-gnu/i386/makecontext.c
@@ -0,0 +1,50 @@
+/* Copyright (C) 2008 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by David Bartley <dtbartle@csclub.uwaterloo.ca>, 2008.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, write to the Free
+   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+   02111-1307 USA.  */
+
+#include <sys/types.h>
+#include <sys/regset.h>
+#include <sys/stack.h>
+#include <ucontext.h>
+#include <stdarg.h>
+#include <assert.h>
+
+void
+__restorecontext (void)
+{
+  ucontext_t uc;
+  assert (getcontext (&uc) == 0);
+  assert (setcontext (uc.uc_link) == 0);
+}
+
+void
+makecontext (ucontext_t *ucp, void (*func) (void), int argc, ...)
+{
+  /* setup the stack (note that it grows down) */
+  void *stack_addr = ucp->uc_stack.ss_sp + ucp->uc_stack.ss_size -
+    (argc + 1) * sizeof(uint32_t);
+  uint32_t *stack_ptr = (uint32_t *)((uint32_t)stack_addr &
+    ~(STACK_ALIGN - 1));
+  ucp->uc_mcontext.gregs[UESP] = (greg_t)stack_ptr;
+  *stack_ptr++ = (uint32_t)__restorecontext; /* return addr */
+  va_list ap;
+  va_start (ap, argc);
+  while (argc--)
+    *stack_ptr++ = (uint32_t)va_arg (ap, char *); /* arg */
+  ucp->uc_mcontext.gregs[EIP] = (greg_t)func;
+}