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, 59 insertions, 0 deletions

diff --git a/sysdeps/unix/sysv/solaris2/kopensolaris-gnu/i386/vfork.S b/sysdeps/unix/sysv/solaris2/kopensolaris-gnu/i386/vfork.S
new file mode 100644
index 0000000000..08e02a969e
--- /dev/null
+++ b/sysdeps/unix/sysv/solaris2/kopensolaris-gnu/i386/vfork.S
@@ -0,0 +1,59 @@
+/* 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 <sysdep.h>
+
+ENTRY (__vfork)
+
+    /* save the return address */
+    popl %ecx; cfi_adjust_cfa_offset (-4)
+
+    /* call vforkx(0) */
+    pushl $0; cfi_adjust_cfa_offset (4)
+    pushl $SYS_SUB_vforkx; cfi_adjust_cfa_offset (4)
+    pushl %ecx; cfi_adjust_cfa_offset (4)
+    DO_CALL (forksys, 1)
+    jb 2f
+
+    /* pop vforkx args */
+    addl $12, %esp; cfi_adjust_cfa_offset (-12)
+
+    /* In the parent process, %edx == 0, %eax == child pid.
+       In the child process, %edx == 1, %eax == parent pid. */
+    decl %edx
+    andl %edx, %eax
+
+    /* jump to the old return address */
+    jmp *%ecx
+
+2:
+    /* pop vforkx args */
+    addl $12, %esp; cfi_adjust_cfa_offset (-12)
+
+    /* restore the return address and jump to the syscall error label */
+    pushl %ecx; cfi_adjust_cfa_offset (4)
+    jmp SYSCALL_ERROR_LABEL
+
+L(pseudo_end):
+    ret
+
+PSEUDO_END (__vfork)
+
+libc_hidden_def (__vfork)
+weak_alias (__vfork, vfork)