Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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linux
1/*
2 * Copyright 2003 PathScale, Inc.
3 *
4 * Licensed under the GPL
5 */
6
7#ifndef __UM_PROCESSOR_X86_64_H
8#define __UM_PROCESSOR_X86_64_H
9
10/* include faultinfo structure */
11#include "sysdep/faultinfo.h"
12
13struct arch_thread {
14 unsigned long debugregs[8];
15 int debugregs_seq;
16 struct faultinfo faultinfo;
17};
18
19/* REP NOP (PAUSE) is a good thing to insert into busy-wait loops. */
20extern inline void rep_nop(void)
21{
22 __asm__ __volatile__("rep;nop": : :"memory");
23}
24
25#define cpu_relax() rep_nop()
26
27#define INIT_ARCH_THREAD { .debugregs = { [ 0 ... 7 ] = 0 }, \
28 .debugregs_seq = 0, \
29 .faultinfo = { 0, 0, 0 } }
30
31#include "asm/arch/user.h"
32
33#define current_text_addr() \
34 ({ void *pc; __asm__("movq $1f,%0\n1:":"=g" (pc)); pc; })
35
36#define ARCH_IS_STACKGROW(address) \
37 (address + 128 >= UPT_SP(¤t->thread.regs.regs))
38
39#define KSTK_EIP(tsk) KSTK_REG(tsk, RIP)
40#define KSTK_ESP(tsk) KSTK_REG(tsk, RSP)
41
42#include "asm/processor-generic.h"
43
44#endif