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/arch/um/sys-x86_64/asm/processor.h

https://gitlab.com/tiler/tiler-omap4
C Header | 56 lines | 35 code | 14 blank | 7 comment | 0 complexity | f1b7dcc746a7fb0e434207da864bfd3f MD5 | raw file
 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        unsigned long fs;
17        struct faultinfo faultinfo;
18};
19
20/* REP NOP (PAUSE) is a good thing to insert into busy-wait loops. */
21static inline void rep_nop(void)
22{
23	__asm__ __volatile__("rep;nop": : :"memory");
24}
25
26#define cpu_relax()   rep_nop()
27
28#define INIT_ARCH_THREAD { .debugregs  		= { [ 0 ... 7 ] = 0 }, \
29			   .debugregs_seq	= 0, \
30			   .fs			= 0, \
31			   .faultinfo		= { 0, 0, 0 } }
32
33static inline void arch_flush_thread(struct arch_thread *thread)
34{
35}
36
37static inline void arch_copy_thread(struct arch_thread *from,
38                                    struct arch_thread *to)
39{
40	to->fs = from->fs;
41}
42
43#include <asm/user.h>
44
45#define current_text_addr() \
46	({ void *pc; __asm__("movq $1f,%0\n1:":"=g" (pc)); pc; })
47
48#define ARCH_IS_STACKGROW(address) \
49        (address + 128 >= UPT_SP(&current->thread.regs.regs))
50
51#define KSTK_EIP(tsk) KSTK_REG(tsk, RIP)
52#define KSTK_ESP(tsk) KSTK_REG(tsk, RSP)
53
54#include "asm/processor-generic.h"
55
56#endif