toolchain/uClibc/patches-0.9.30.1/500-avr32_add_varargs_handling_of_prctl_syscall.patch

   1 From 2b69e9906e5087a796b3a15e9aabcd102c705b19 Mon Sep 17 00:00:00 2001
   2 From: Hans-Christian Egtvedt <hans-christian.egtvedt@atmel.com>
   3 Date: Wed, 16 Dec 2009 12:16:08 +0000
   4 Subject: avr32: add varargs handling of prctl syscall
   5
   6 prctl is defined to use varargs in the header file, hence it needs varargs
   7 specific handling in the source. This patch properly handles the variodic
   8 argument before the syscall is passed to the kernel for the AVR32 architecture.
   9
  10 Signed-off-by: Hans-Christian Egtvedt <hans-christian.egtvedt@atmel.com>
  11 ---
  12 diff --git a/libc/sysdeps/linux/avr32/Makefile.arch b/libc/sysdeps/linux/avr32/Makefile.arch
  13 index bc5f625..98b85a7 100644
  14 --- a/libc/sysdeps/linux/avr32/Makefile.arch
  15 +++ b/libc/sysdeps/linux/avr32/Makefile.arch
  16 @@ -5,7 +5,7 @@
  17  # Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball.
  18  #
  19
  20 -CSRC   := brk.c clone.c mmap.c sigaction.c
  21 +CSRC   := brk.c clone.c mmap.c prctl.c sigaction.c
  22
  23  SSRC   := __longjmp.S setjmp.S bsd-setjmp.S bsd-_setjmp.S      \
  24                 sigrestorer.S syscall.S vfork.S
  25 diff --git a/libc/sysdeps/linux/avr32/prctl.c b/libc/sysdeps/linux/avr32/prctl.c
  26 new file mode 100644
  27 index 0000000..4e146e3
  28 --- a/dev/null
  29 +++ b/libc/sysdeps/linux/avr32/prctl.c
  30 @@ -0,0 +1,36 @@
  31 +/*
  32 + * prctl syscall for AVR32 Linux.
  33 + *
  34 + * Copyright (C) 2010 Atmel Corporation
  35 + *
  36 + * This file is subject to the terms and conditions of the GNU Lesser General
  37 + * Public License. See the file "COPYING.LIB" in the main directory of this
  38 + * archive for more details.
  39 + */
  40 +#include <sys/syscall.h>
  41 +#include <sys/prctl.h>
  42 +#include <stdarg.h>
  43 +
  44 +#ifdef __NR_prctl
  45 +#define __NR___syscall_prctl   __NR_prctl
  46 +static inline _syscall5(int, __syscall_prctl, int, option, long, arg2,
  47 +               long, arg3, long, arg4, long, arg5);
  48 +
  49 +int prctl(int __option, ...)
  50 +{
  51 +       long arg2;
  52 +       long arg3;
  53 +       long arg4;
  54 +       long arg5;
  55 +       va_list ap;
  56 +
  57 +       va_start(ap, __option);
  58 +       arg2 = va_arg(ap, long);
  59 +       arg3 = va_arg(ap, long);
  60 +       arg4 = va_arg(ap, long);
  61 +       arg5 = va_arg(ap, long);
  62 +       va_end(ap);
  63 +
  64 +       return INLINE_SYSCALL(prctl, 5, __option, arg2, arg3, arg4, arg5);
  65 +}
  66 +#endif
  67 --
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