名称

arch_prctl - 设置架构特定的线程状态

内容简介

#include <asm/prctl.h>
#include <sys/prctl.h>

int arch_prctl(int code, unsigned long addr)

arch_prctl() 函数设置架构的具体进程或线程状态。代码选择一个子功能和参数地址传递给它。

x86-64的子函数是：

标签	描述
ARCH_SET_FS	Set the 64bit base for the FS register toaddr.
ARCH_GET_FS	Return the 64bit base value for theFS register of the current thread in theunsigned long pointed to by the address parameter
ARCH_SET_GS	Set the 64bit base for the GS register to addr.
ARCH_GET_GS	Return the 64bit base value for the GS register of the current thread in the unsigned long pointed to by the addressparameter.

标签	描述
EFAULT	addr points to an unmapped address or is outside the process address space.
EINVAL	code is not a valid subcommand.
EPERM	addr is outside the process address space.

Man page written by Andi Kleen.

arch_prctl() 是一个Linux/x86-64的扩展，并且不应该被用在程序准备移植。