arch/csky/include/asm/syscall.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2
   3 #ifndef __ASM_SYSCALL_H
   4 #define __ASM_SYSCALL_H
   5
   6 #include <linux/sched.h>
   7 #include <linux/err.h>
   8 #include <abi/regdef.h>
   9 #include <uapi/linux/audit.h>
  10
  11 static inline int
  12 syscall_get_nr(struct task_struct *task, struct pt_regs *regs)
  13 {
  14         return regs_syscallid(regs);
  15 }
  16
  17 static inline void
  18 syscall_rollback(struct task_struct *task, struct pt_regs *regs)
  19 {
  20         regs->a0 = regs->orig_a0;
  21 }
  22
  23 static inline long
  24 syscall_get_error(struct task_struct *task, struct pt_regs *regs)
  25 {
  26         unsigned long error = regs->a0;
  27
  28         return IS_ERR_VALUE(error) ? error : 0;
  29 }
  30
  31 static inline long
  32 syscall_get_return_value(struct task_struct *task, struct pt_regs *regs)
  33 {
  34         return regs->a0;
  35 }
  36
  37 static inline void
  38 syscall_set_return_value(struct task_struct *task, struct pt_regs *regs,
  39                 int error, long val)
  40 {
  41         regs->a0 = (long) error ?: val;
  42 }
  43
  44 static inline void
  45 syscall_get_arguments(struct task_struct *task, struct pt_regs *regs,
  46                       unsigned long *args)
  47 {
  48         args[0] = regs->orig_a0;
  49         args++;
  50         memcpy(args, &regs->a1, 5 * sizeof(args[0]));
  51 }
  52
  53 static inline void
  54 syscall_set_arguments(struct task_struct *task, struct pt_regs *regs,
  55                       const unsigned long *args)
  56 {
  57         regs->orig_a0 = args[0];
  58         args++;
  59         memcpy(&regs->a1, args, 5 * sizeof(regs->a1));
  60 }
  61
  62 static inline int
  63 syscall_get_arch(void)
  64 {
  65         return AUDIT_ARCH_CSKY;
  66 }
  67
  68 #endif  /* __ASM_SYSCALL_H */