LXR linux/arch/cris/include/arch-v32/arch/system.h

   1#ifndef _ASM_CRIS_ARCH_SYSTEM_H
   2#define _ASM_CRIS_ARCH_SYSTEM_H
   3
   4
   5/* Read the CPU version register. */
   6static inline unsigned long rdvr(void)
   7{
   8        unsigned char vr;
   9
  10        __asm__ __volatile__ ("move $vr, %0" : "=rm" (vr));
  11        return vr;
  12}
  13
  14#define cris_machine_name "crisv32"
  15
  16/* Read the user-mode stack pointer. */
  17static inline unsigned long rdusp(void)
  18{
  19        unsigned long usp;
  20
  21        __asm__ __volatile__ ("move $usp, %0" : "=rm" (usp));
  22        return usp;
  23}
  24
  25/* Read the current stack pointer. */
  26static inline unsigned long rdsp(void)
  27{
  28        unsigned long sp;
  29
  30        __asm__ __volatile__ ("move.d $sp, %0" : "=rm" (sp));
  31        return sp;
  32}
  33
  34/* Write the user-mode stack pointer. */
  35#define wrusp(usp) __asm__ __volatile__ ("move %0, $usp" : : "rm" (usp))
  36
  37#endif /* _ASM_CRIS_ARCH_SYSTEM_H */
  38