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 "asm/arch/user.h"
  11
  12 struct arch_thread {
  13 };
  14
  15 /* REP NOP (PAUSE) is a good thing to insert into busy-wait loops. */
  16 extern inline void rep_nop(void)
  17 {
  18         __asm__ __volatile__("rep;nop": : :"memory");
  19 }
  20
  21 #define cpu_relax()   rep_nop()
  22
  23 #define INIT_ARCH_THREAD { }
  24
  25 #define current_text_addr() \
  26         ({ void *pc; __asm__("movq $1f,%0\n1:":"=g" (pc)); pc; })
  27
  28 #define ARCH_IS_STACKGROW(address) \
  29         (address + 128 >= UPT_SP(&current->thread.regs.regs))
  30
  31 #include "asm/processor-generic.h"
  32
  33 #endif
  34
  35 /*
  36  * Overrides for Emacs so that we follow Linus's tabbing style.
  37  * Emacs will notice this stuff at the end of the file and automatically
  38  * adjust the settings for this buffer only.  This must remain at the end
  39  * of the file.
  40  * ---------------------------------------------------------------------------
  41  * Local variables:
  42  * c-file-style: "linux"
  43  * End:
  44  */