include/asm-um/processor-x86_64.h

   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
  13 struct 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. */
  20 extern 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 static inline void arch_flush_thread(struct arch_thread *thread)
  32 {
  33 }
  34
  35 static inline void arch_copy_thread(struct arch_thread *from,
  36                                     struct arch_thread *to)
  37 {
  38 }
  39
  40 #include "asm/arch/user.h"
  41
  42 #define current_text_addr() \
  43         ({ void *pc; __asm__("movq $1f,%0\n1:":"=g" (pc)); pc; })
  44
  45 #define ARCH_IS_STACKGROW(address) \
  46         (address + 128 >= UPT_SP(&current->thread.regs.regs))
  47
  48 #define KSTK_EIP(tsk) KSTK_REG(tsk, RIP)
  49 #define KSTK_ESP(tsk) KSTK_REG(tsk, RSP)
  50
  51 #include "asm/processor-generic.h"
  52
  53 #endif