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authorAndreas Jaeger <aj@suse.de>2005-03-28 09:26:46 +0000
committerAndreas Jaeger <aj@suse.de>2005-03-28 09:26:46 +0000
commitf850220be60d259b62f1f5c5d8b568c105c4ecf2 (patch)
treea339b223ea2c0ef1be9c757a1c90adf0dd795a63 /sysdeps/unix/sysv/linux/mips/vfork.S
parentabc85e9fea35a8e2eedfc9796c8d81ae5364bcf7 (diff)
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Update.
	* sysdeps/mips/atomicity.h: Remove unused file.
	* sysdeps/mips/dl-machine.h (elf_machine_rel): Add TLS relocations.
	* sysdeps/mips/dl-tls.h: New file.
	* sysdeps/mips/libc-tls.c: New file.
	* sysdeps/mips/tls-macros.h: New file.
	* sysdeps/mips/bits/atomic.h: New file.
	* sysdeps/mips/bits/setjmp.h: Protect against multiple inclusion.
	* sysdeps/mips/elf/configure.in: New file.
	* sysdeps/mips/elf/configure: Generated.
	* sysdeps/mips/sys/asm.h: New file.
	* sysdeps/unix/sysv/linux/mips/vfork.S: New file.
	* sysdeps/unix/sysv/linux/mips/clone.S: Add NPTL and five-argument
	clone support.
	* sysdeps/unix/sysv/linux/mips/mips32/sysdep.h
	(INTERNAL_SYSCALL_NCS): New.
	(INTERNAL_SYSCALL): Update for non-constant support.
	(internal_syscall0): Likewise.
	(internal_syscall1): Likewise.
	(internal_syscall2): Likewise.
	(internal_syscall3): Likewise.
	(internal_syscall4): Likewise.
	(internal_syscall5): Likewise.
	(internal_syscall6): Likewise.
	(internal_syscall7): Likewise.
	* sysdeps/unix/sysv/linux/mips/bits/siginfo.h (SIGEV_THREAD):
	Update to match the kernel.
	(SIGEV_CALLBACK): Likewise.
	(SIGEV_THREAD_ID): Likewise.

2005-03-28  Daniel Jacobowitz  <dan@codesourcery.com>
Diffstat (limited to 'sysdeps/unix/sysv/linux/mips/vfork.S')
-rw-r--r--sysdeps/unix/sysv/linux/mips/vfork.S98
1 files changed, 98 insertions, 0 deletions
diff --git a/sysdeps/unix/sysv/linux/mips/vfork.S b/sysdeps/unix/sysv/linux/mips/vfork.S
new file mode 100644
index 0000000000..1383ddc6a7
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/mips/vfork.S
@@ -0,0 +1,98 @@
+/* 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>
+#include <sgidefs.h>
+
+#ifndef SAVE_PID
+#define SAVE_PID
+#endif
+
+#ifndef RESTORE_PID
+#define RESTORE_PID
+#endif
+
+
+/* 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
+
+	PTR_ADDU	sp, FRAMESZ
+
+	SAVE_PID
+
+	li		a0, 0x4112	/* CLONE_VM | CLONE_VFORK | SIGCHLD */
+	move		a1, sp
+
+	/* Do the system call */
+	li		v0,__NR_clone
+	syscall
+
+	RESTORE_PID
+
+	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
+	END(__vfork)
+
+libc_hidden_def(__vfork)
+weak_alias(__vfork, vfork)