LXR linux/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
  11extern void *sys_call_table[];
  12
  13static inline int
  14syscall_get_nr(struct task_struct *task, struct pt_regs *regs)
  15{
  16        return regs_syscallid(regs);
  17}
  18
  19static inline void
  20syscall_set_nr(struct task_struct *task, struct pt_regs *regs,
  21               int sysno)
  22{
  23        regs_syscallid(regs) = sysno;
  24}
  25
  26static inline void
  27syscall_rollback(struct task_struct *task, struct pt_regs *regs)
  28{
  29        regs->a0 = regs->orig_a0;
  30}
  31
  32static inline long
  33syscall_get_error(struct task_struct *task, struct pt_regs *regs)
  34{
  35        unsigned long error = regs->a0;
  36
  37        return IS_ERR_VALUE(error) ? error : 0;
  38}
  39
  40static inline long
  41syscall_get_return_value(struct task_struct *task, struct pt_regs *regs)
  42{
  43        return regs->a0;
  44}
  45
  46static inline void
  47syscall_set_return_value(struct task_struct *task, struct pt_regs *regs,
  48                int error, long val)
  49{
  50        regs->a0 = (long) error ?: val;
  51}
  52
  53static inline void
  54syscall_get_arguments(struct task_struct *task, struct pt_regs *regs,
  55                      unsigned long *args)
  56{
  57        args[0] = regs->orig_a0;
  58        args++;
  59        memcpy(args, &regs->a1, 5 * sizeof(args[0]));
  60}
  61
  62static inline void
  63syscall_set_arguments(struct task_struct *task, struct pt_regs *regs,
  64                      const unsigned long *args)
  65{
  66        regs->orig_a0 = args[0];
  67        args++;
  68        memcpy(&regs->a1, args, 5 * sizeof(regs->a1));
  69}
  70
  71static inline int
  72syscall_get_arch(struct task_struct *task)
  73{
  74        return AUDIT_ARCH_CSKY;
  75}
  76
  77#endif  /* __ASM_SYSCALL_H */
  78