fix varargs handling of the prctl syscall

SVN-Revision: 19740
14 years ago · a49f5f7376
parent bd4f4a9204
commit a49f5f7376
1 changed files with 68 additions and 0 deletions
--- a/toolchain/uClibc/patches-0.9.30.1/500-avr32_add_varargs_handling_of_prctl_syscall.patch
+++ b/toolchain/uClibc/patches-0.9.30.1/500-avr32_add_varargs_handling_of_prctl_syscall.patch
@ -0,0 +1,68 @@
+From 2b69e9906e5087a796b3a15e9aabcd102c705b19 Mon Sep 17 00:00:00 2001
+From: Hans-Christian Egtvedt <hans-christian.egtvedt@atmel.com>
+Date: Wed, 16 Dec 2009 12:16:08 +0000
+Subject: avr32: add varargs handling of prctl syscall
+
+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.egtvedt@atmel.com>
+---
+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
+--- a/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
+--
+cgit v0.8.2.1