55 lines
1.3 KiB
C
55 lines
1.3 KiB
C
/*
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* Copyright (C) 2002 Jeff Dike (jdike@karaya.com)
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* Licensed under the GPL
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*/
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#ifndef __UM_PROCESSOR_I386_H
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#define __UM_PROCESSOR_I386_H
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extern int host_has_xmm;
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extern int host_has_cmov;
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struct arch_thread {
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unsigned long debugregs[8];
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int debugregs_seq;
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};
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#define INIT_ARCH_THREAD { .debugregs = { [ 0 ... 7 ] = 0 }, \
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.debugregs_seq = 0 }
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#include "asm/arch/user.h"
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/* REP NOP (PAUSE) is a good thing to insert into busy-wait loops. */
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static inline void rep_nop(void)
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{
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__asm__ __volatile__("rep;nop": : :"memory");
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}
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#define cpu_relax() rep_nop()
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/*
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* Default implementation of macro that returns current
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* instruction pointer ("program counter"). Stolen
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* from asm-i386/processor.h
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*/
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#define current_text_addr() \
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({ void *pc; __asm__("movl $1f,%0\n1:":"=g" (pc)); pc; })
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#define ARCH_IS_STACKGROW(address) \
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(address + 32 >= UPT_SP(¤t->thread.regs.regs))
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#include "asm/processor-generic.h"
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#endif
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/*
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* Overrides for Emacs so that we follow Linus's tabbing style.
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* Emacs will notice this stuff at the end of the file and automatically
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* adjust the settings for this buffer only. This must remain at the end
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* of the file.
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* ---------------------------------------------------------------------------
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* Local variables:
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* c-file-style: "linux"
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* End:
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*/
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