prctl is defined to use varargs in the header file, hence it needs varargs specific handling in the source. This patch properly handles the variodic argument before the syscall is passed to the kernel for the AVR32 architecture.
Signed-off-by: Hans-Christian Egtvedt <hans-christian.egtv...@atmel.com> --- This is v2 of the previous attempt to add proper prctl handling for AVR32 architecture. If everybody are fine with this approach I'll commit it to master, nptl and 0_9_30 branches. libc/sysdeps/linux/avr32/Makefile.arch | 2 +- libc/sysdeps/linux/avr32/prctl.c | 36 ++++++++++++++++++++++++++++++++ 2 files changed, 37 insertions(+), 1 deletions(-) create mode 100644 libc/sysdeps/linux/avr32/prctl.c diff --git a/libc/sysdeps/linux/avr32/Makefile.arch b/libc/sysdeps/linux/avr32/Makefile.arch index bc5f625..98b85a7 100644 --- a/libc/sysdeps/linux/avr32/Makefile.arch +++ b/libc/sysdeps/linux/avr32/Makefile.arch @@ -5,7 +5,7 @@ # Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball. # -CSRC := brk.c clone.c mmap.c sigaction.c +CSRC := brk.c clone.c mmap.c prctl.c sigaction.c SSRC := __longjmp.S setjmp.S bsd-setjmp.S bsd-_setjmp.S \ sigrestorer.S syscall.S vfork.S diff --git a/libc/sysdeps/linux/avr32/prctl.c b/libc/sysdeps/linux/avr32/prctl.c new file mode 100644 index 0000000..4e146e3 --- /dev/null +++ b/libc/sysdeps/linux/avr32/prctl.c @@ -0,0 +1,36 @@ +/* + * prctl syscall for AVR32 Linux. + * + * Copyright (C) 2010 Atmel Corporation + * + * This file is subject to the terms and conditions of the GNU Lesser General + * Public License. See the file "COPYING.LIB" in the main directory of this + * archive for more details. + */ +#include <sys/syscall.h> +#include <sys/prctl.h> +#include <stdarg.h> + +#ifdef __NR_prctl +#define __NR___syscall_prctl __NR_prctl +static inline _syscall5(int, __syscall_prctl, int, option, long, arg2, + long, arg3, long, arg4, long, arg5); + +int prctl(int __option, ...) +{ + long arg2; + long arg3; + long arg4; + long arg5; + va_list ap; + + va_start(ap, __option); + arg2 = va_arg(ap, long); + arg3 = va_arg(ap, long); + arg4 = va_arg(ap, long); + arg5 = va_arg(ap, long); + va_end(ap); + + return INLINE_SYSCALL(prctl, 5, __option, arg2, arg3, arg4, arg5); +} +#endif -- 1.6.0.4 _______________________________________________ uClibc mailing list uClibc@uclibc.org http://lists.busybox.net/mailman/listinfo/uclibc