arch/x86/um/asm/processor.h

   1 #ifndef __UM_PROCESSOR_H
   2 #define __UM_PROCESSOR_H
   3
   4 /* include faultinfo structure */
   5 #include <sysdep/faultinfo.h>
   6
   7 #ifdef CONFIG_X86_32
   8 # include "processor_32.h"
   9 #else
  10 # include "processor_64.h"
  11 #endif
  12
  13 #define KSTK_EIP(tsk) KSTK_REG(tsk, HOST_IP)
  14 #define KSTK_ESP(tsk) KSTK_REG(tsk, HOST_SP)
  15 #define KSTK_EBP(tsk) KSTK_REG(tsk, HOST_BP)
  16
  17 #define ARCH_IS_STACKGROW(address) \
  18        (address + 65536 + 32 * sizeof(unsigned long) >= UPT_SP(&current->thread.regs.regs))
  19
  20 #include <asm/user.h>
  21
  22 /* REP NOP (PAUSE) is a good thing to insert into busy-wait loops. */
  23 static inline void rep_nop(void)
  24 {
  25         __asm__ __volatile__("rep;nop": : :"memory");
  26 }
  27
  28 #define cpu_relax()             rep_nop()
  29 #define cpu_relax_lowlatency()  cpu_relax()
  30
  31 #include <asm/processor-generic.h>
  32
  33 #endif