arch/arm64/include/asm/scs.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 #ifndef _ASM_SCS_H
   3 #define _ASM_SCS_H
   4
   5 #ifdef __ASSEMBLY__
   6
   7 #include <asm/asm-offsets.h>
   8
   9 #ifdef CONFIG_SHADOW_CALL_STACK
  10         scs_sp  .req    x18
  11
  12         .macro scs_load tsk
  13         ldr     scs_sp, [\tsk, #TSK_TI_SCS_SP]
  14         .endm
  15
  16         .macro scs_save tsk
  17         str     scs_sp, [\tsk, #TSK_TI_SCS_SP]
  18         .endm
  19 #else
  20         .macro scs_load tsk
  21         .endm
  22
  23         .macro scs_save tsk
  24         .endm
  25 #endif /* CONFIG_SHADOW_CALL_STACK */
  26
  27 #endif /* __ASSEMBLY __ */
  28
  29 #endif /* _ASM_SCS_H */