From cccc549ced940c85039c8ce263c8bb571f244afd Mon Sep 17 00:00:00 2001
From: Mike Frysinger <vapier@gentoo.org>
Date: Tue, 31 Jan 2006 05:05:15 +0000
Subject: initial import of latest linuxthreads

---
 .../sysdeps/unix/sysv/linux/mips/vfork.S           | 104 +++++++++++++++++++++
 1 file changed, 104 insertions(+)
 create mode 100644 libpthread/linuxthreads/sysdeps/unix/sysv/linux/mips/vfork.S

(limited to 'libpthread/linuxthreads/sysdeps/unix/sysv/linux/mips/vfork.S')

diff --git a/libpthread/linuxthreads/sysdeps/unix/sysv/linux/mips/vfork.S b/libpthread/linuxthreads/sysdeps/unix/sysv/linux/mips/vfork.S
new file mode 100644
index 000000000..7bbab5c59
--- /dev/null
+++ b/libpthread/linuxthreads/sysdeps/unix/sysv/linux/mips/vfork.S
@@ -0,0 +1,104 @@
+/* Copyright (C) 2005 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 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.  */
+
+/* vfork() is just a special case of clone().  */
+
+#include <sys/asm.h>
+#include <sysdep.h>
+#include <asm/unistd.h>
+
+/* int vfork() */
+
+	.text
+LOCALSZ= 1
+FRAMESZ= (((NARGSAVE+LOCALSZ)*SZREG)+ALSZ)&ALMASK
+GPOFF= FRAMESZ-(1*SZREG)
+NESTED(__vfork,FRAMESZ,sp)
+#ifdef __PIC__
+	SETUP_GP
+#endif
+	PTR_SUBU sp, FRAMESZ
+	SETUP_GP64 (a5, __vfork)
+#ifdef __PIC__
+	SAVE_GP (GPOFF)
+#endif
+#ifdef PROF
+# if (_MIPS_SIM != _ABIO32)
+	PTR_S		a5, GPOFF(sp)
+# endif
+	.set		noat
+	move		$1, ra
+# if (_MIPS_SIM == _ABIO32)
+	subu		sp,sp,8
+# endif
+	jal		_mcount
+	.set		at
+# if (_MIPS_SIM != _ABIO32)
+	PTR_L		a5, GPOFF(sp)
+# endif
+#endif
+
+	/* If libpthread is loaded, we need to call fork instead.  */
+#ifdef SHARED
+	PTR_L		a0, __libc_pthread_functions
+#else
+	.weak		pthread_create
+	PTR_LA		a0, pthread_create
+#endif
+
+	PTR_ADDU	sp, FRAMESZ
+
+	bnez		a0, L(call_fork)
+
+	li		a0, 0x4112	/* CLONE_VM | CLONE_VFORK | SIGCHLD */
+	move		a1, sp
+
+	/* Do the system call */
+	li		v0,__NR_clone
+	syscall
+
+	bnez		a3,L(error)
+
+	/* Successful return from the parent or child.  */
+	RESTORE_GP64
+	ret
+
+	/* Something bad happened -- no child created.  */
+L(error):
+#ifdef __PIC__
+	PTR_LA		t9, __syscall_error
+	RESTORE_GP64
+	jr		t9
+#else
+	RESTORE_GP64
+	j		__syscall_error
+#endif
+
+L(call_fork):
+#ifdef __PIC__
+	PTR_LA		t9, fork
+	RESTORE_GP64
+	jr		t9
+#else
+	RESTORE_GP64
+	j		fork
+#endif
+	END(__vfork)
+
+libc_hidden_def(__vfork)
+weak_alias (__vfork, vfork)
-- 
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