yann@1819: From 85bc04d5436ca6c8a30a1ad28862260a04b8b3d5 Mon Sep 17 00:00:00 2001
yann@1819: From: Hans-Christian Egtvedt <hans-christian.egtvedt@atmel.com>
yann@1819: Date: Wed, 16 Dec 2009 13:16:08 +0100
yann@1819: Subject: [PATCH 02/15] avr32: add varargs handling of prctl syscall
yann@1819: 
yann@1819: prctl is defined to use varargs in the header file, hence it needs varargs
yann@1819: specific handling in the source. This patch properly handles the variodic
yann@1819: argument before the syscall is passed to the kernel for the AVR32 architecture.
yann@1819: 
yann@1819: Signed-off-by: Hans-Christian Egtvedt <hans-christian.egtvedt@atmel.com>
yann@1819: ---
yann@1819:  libc/sysdeps/linux/avr32/Makefile.arch |    2 +-
yann@1819:  libc/sysdeps/linux/avr32/prctl.c       |   36 ++++++++++++++++++++++++++++++++
yann@1819:  2 files changed, 37 insertions(+), 1 deletions(-)
yann@1819:  create mode 100644 libc/sysdeps/linux/avr32/prctl.c
yann@1819: 
yann@1819: diff --git a/libc/sysdeps/linux/avr32/Makefile.arch b/libc/sysdeps/linux/avr32/Makefile.arch
yann@1819: index bc5f625..98b85a7 100644
yann@1819: --- a/libc/sysdeps/linux/avr32/Makefile.arch
yann@1819: +++ b/libc/sysdeps/linux/avr32/Makefile.arch
yann@1819: @@ -5,7 +5,7 @@
yann@1819:  # Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball.
yann@1819:  #
yann@1819:  
yann@1819: -CSRC	:= brk.c clone.c mmap.c sigaction.c
yann@1819: +CSRC	:= brk.c clone.c mmap.c prctl.c sigaction.c
yann@1819:  
yann@1819:  SSRC	:= __longjmp.S setjmp.S bsd-setjmp.S bsd-_setjmp.S	\
yann@1819:  		sigrestorer.S syscall.S vfork.S
yann@1819: diff --git a/libc/sysdeps/linux/avr32/prctl.c b/libc/sysdeps/linux/avr32/prctl.c
yann@1819: new file mode 100644
yann@1819: index 0000000..4e146e3
yann@1819: --- /dev/null
yann@1819: +++ b/libc/sysdeps/linux/avr32/prctl.c
yann@1819: @@ -0,0 +1,36 @@
yann@1819: +/*
yann@1819: + * prctl syscall for AVR32 Linux.
yann@1819: + *
yann@1819: + * Copyright (C) 2010 Atmel Corporation
yann@1819: + *
yann@1819: + * This file is subject to the terms and conditions of the GNU Lesser General
yann@1819: + * Public License. See the file "COPYING.LIB" in the main directory of this
yann@1819: + * archive for more details.
yann@1819: + */
yann@1819: +#include <sys/syscall.h>
yann@1819: +#include <sys/prctl.h>
yann@1819: +#include <stdarg.h>
yann@1819: +
yann@1819: +#ifdef __NR_prctl
yann@1819: +#define __NR___syscall_prctl	__NR_prctl
yann@1819: +static inline _syscall5(int, __syscall_prctl, int, option, long, arg2,
yann@1819: +		long, arg3, long, arg4, long, arg5);
yann@1819: +
yann@1819: +int prctl(int __option, ...)
yann@1819: +{
yann@1819: +	long arg2;
yann@1819: +	long arg3;
yann@1819: +	long arg4;
yann@1819: +	long arg5;
yann@1819: +	va_list ap;
yann@1819: +
yann@1819: +	va_start(ap, __option);
yann@1819: +	arg2 = va_arg(ap, long);
yann@1819: +	arg3 = va_arg(ap, long);
yann@1819: +	arg4 = va_arg(ap, long);
yann@1819: +	arg5 = va_arg(ap, long);
yann@1819: +	va_end(ap);
yann@1819: +
yann@1819: +	return INLINE_SYSCALL(prctl, 5, __option, arg2, arg3, arg4, arg5);
yann@1819: +}
yann@1819: +#endif
yann@1819: -- 
yann@1819: 1.6.6.1
yann@1819: