2 * Copyright (C) 2002 Jeff Dike (jdike@karaya.com)
3 * Licensed under the GPL
6 #ifndef __UM_PROCESSOR_I386_H
7 #define __UM_PROCESSOR_I386_H
9 extern int host_has_xmm;
10 extern int host_has_cmov;
13 unsigned long debugregs[8];
17 #define INIT_ARCH_THREAD { .debugregs = { [ 0 ... 7 ] = 0 }, \
20 #include "asm/arch/user.h"
22 /* REP NOP (PAUSE) is a good thing to insert into busy-wait loops. */
23 static inline void rep_nop(void)
25 __asm__ __volatile__("rep;nop": : :"memory");
28 #define cpu_relax() rep_nop()
31 * Default implementation of macro that returns current
32 * instruction pointer ("program counter"). Stolen
33 * from asm-i386/processor.h
35 #define current_text_addr() \
36 ({ void *pc; __asm__("movl $1f,%0\n1:":"=g" (pc)); pc; })
38 #define ARCH_IS_STACKGROW(address) \
39 (address + 32 >= UPT_SP(¤t->thread.regs.regs))
41 #include "asm/processor-generic.h"
46 * Overrides for Emacs so that we follow Linus's tabbing style.
47 * Emacs will notice this stuff at the end of the file and automatically
48 * adjust the settings for this buffer only. This must remain at the end
50 * ---------------------------------------------------------------------------
52 * c-file-style: "linux"