libpthread/nptl: core of the "Native Posix Threading Library" for uClibc

targetting arm,sh,i386,mips,sparc for now

Signed-off-by: Austin Foxley <austinf@cetoncorp.com>

1 files changed, 96 insertions, 0 deletions

diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/i386/i486/sem_post.S b/libpthread/nptl/sysdeps/unix/sysv/linux/i386/i486/sem_post.S
new file mode 100644
index 000000000..82f24c267
--- /dev/null
+++ b/libpthread/nptl/sysdeps/unix/sysv/linux/i386/i486/sem_post.S
@@ -0,0 +1,96 @@
+/* Copyright (C) 2002, 2003, 2005 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
+
+   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>
+#include <pthread-errnos.h>
+#include <tls.h>
+
+#ifndef UP
+# define LOCK lock
+#else
+# define
+#endif
+
+#define FUTEX_WAKE		1
+
+
+	.text
+
+	.globl	__new_sem_post
+	.type	__new_sem_post,@function
+	.align	16
+__new_sem_post:
+	pushl	%ebx
+
+	movl	8(%esp), %ebx
+	movl	$1, %edx
+	LOCK
+	xaddl	%edx, (%ebx)
+
+	movl	$SYS_futex, %eax
+	movl	$FUTEX_WAKE, %ecx
+	addl	$1, %edx
+	ENTER_KERNEL
+
+	testl	%eax, %eax
+	js	1f
+
+	xorl	%eax, %eax
+	popl	%ebx
+	ret
+
+1:
+#ifdef PIC
+	call	__i686.get_pc_thunk.bx
+#else
+	movl	$4f, %ebx
+4:
+#endif
+	addl	$_GLOBAL_OFFSET_TABLE_, %ebx
+#if USE___THREAD
+# ifdef NO_TLS_DIRECT_SEG_REFS
+	movl	errno@gotntpoff(%ebx), %edx
+	addl	%gs:0, %edx
+	movl	$EINVAL, (%edx)
+# else
+	movl	errno@gotntpoff(%ebx), %edx
+	movl	$EINVAL, %gs:(%edx)
+# endif
+#else
+	call	__errno_location@plt
+	movl	$EINVAL, (%eax)
+#endif
+
+	orl	$-1, %eax
+	popl	%ebx
+	ret
+	.size	__new_sem_post,.-__new_sem_post
+weak_alias(__new_sem_post, sem_post)
+
+
+#ifdef PIC
+	.section .gnu.linkonce.t.__i686.get_pc_thunk.bx,"ax",@progbits
+	.globl	__i686.get_pc_thunk.bx
+	.hidden	__i686.get_pc_thunk.bx
+	.type	__i686.get_pc_thunk.bx,@function
+__i686.get_pc_thunk.bx:
+	movl (%esp), %ebx;
+	ret
+	.size	__i686.get_pc_thunk.bx,.-__i686.get_pc_thunk.bx
+#endif