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

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 #ifndef _ASM_CRIS_ARCH_SYSTEM_H
   3 #define _ASM_CRIS_ARCH_SYSTEM_H
   4
   5
   6 /* Read the CPU version register. */
   7 static inline unsigned long rdvr(void)
   8 {
   9         unsigned char vr;
  10
  11         __asm__ __volatile__ ("move $vr, %0" : "=rm" (vr));
  12         return vr;
  13 }
  14
  15 #define cris_machine_name "crisv32"
  16
  17 /* Read the user-mode stack pointer. */
  18 static inline unsigned long rdusp(void)
  19 {
  20         unsigned long usp;
  21
  22         __asm__ __volatile__ ("move $usp, %0" : "=rm" (usp));
  23         return usp;
  24 }
  25
  26 /* Read the current stack pointer. */
  27 static inline unsigned long rdsp(void)
  28 {
  29         unsigned long sp;
  30
  31         __asm__ __volatile__ ("move.d $sp, %0" : "=rm" (sp));
  32         return sp;
  33 }
  34
  35 /* Write the user-mode stack pointer. */
  36 #define wrusp(usp) __asm__ __volatile__ ("move %0, $usp" : : "rm" (usp))
  37
  38 #endif /* _ASM_CRIS_ARCH_SYSTEM_H */