Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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kernel
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linux
1/*
2 * Copyright (C) 2002 Jeff Dike (jdike@karaya.com)
3 * Licensed under the GPL
4 */
5
6#ifndef __UM_PROCESSOR_I386_H
7#define __UM_PROCESSOR_I386_H
8
9extern int host_has_xmm;
10extern int host_has_cmov;
11
12/* include faultinfo structure */
13#include "sysdep/faultinfo.h"
14
15struct arch_thread {
16 unsigned long debugregs[8];
17 int debugregs_seq;
18 struct faultinfo faultinfo;
19};
20
21#define INIT_ARCH_THREAD { .debugregs = { [ 0 ... 7 ] = 0 }, \
22 .debugregs_seq = 0, \
23 .faultinfo = { 0, 0, 0 } }
24
25#include "asm/arch/user.h"
26
27/* REP NOP (PAUSE) is a good thing to insert into busy-wait loops. */
28static inline void rep_nop(void)
29{
30 __asm__ __volatile__("rep;nop": : :"memory");
31}
32
33#define cpu_relax() rep_nop()
34
35/*
36 * Default implementation of macro that returns current
37 * instruction pointer ("program counter"). Stolen
38 * from asm-i386/processor.h
39 */
40#define current_text_addr() \
41 ({ void *pc; __asm__("movl $1f,%0\n1:":"=g" (pc)); pc; })
42
43#define ARCH_IS_STACKGROW(address) \
44 (address + 32 >= UPT_SP(¤t->thread.regs.regs))
45
46#define KSTK_EIP(tsk) KSTK_REG(tsk, EIP)
47#define KSTK_ESP(tsk) KSTK_REG(tsk, UESP)
48#define KSTK_EBP(tsk) KSTK_REG(tsk, EBP)
49
50#include "asm/processor-generic.h"
51
52#endif