arch/parisc/include/asm/syscall.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 /* syscall.h */
   3
   4 #ifndef _ASM_PARISC_SYSCALL_H_
   5 #define _ASM_PARISC_SYSCALL_H_
   6
   7 #include <uapi/linux/audit.h>
   8 #include <linux/compat.h>
   9 #include <linux/err.h>
  10 #include <asm/ptrace.h>
  11
  12 #define NR_syscalls (__NR_Linux_syscalls)
  13
  14 static inline long syscall_get_nr(struct task_struct *tsk,
  15                                   struct pt_regs *regs)
  16 {
  17         return regs->gr[20];
  18 }
  19
  20 static inline void syscall_get_arguments(struct task_struct *tsk,
  21                                          struct pt_regs *regs,
  22                                          unsigned long *args)
  23 {
  24         args[5] = regs->gr[21];
  25         args[4] = regs->gr[22];
  26         args[3] = regs->gr[23];
  27         args[2] = regs->gr[24];
  28         args[1] = regs->gr[25];
  29         args[0] = regs->gr[26];
  30 }
  31
  32 static inline long syscall_get_error(struct task_struct *task,
  33                                      struct pt_regs *regs)
  34 {
  35         unsigned long error = regs->gr[28];
  36         return IS_ERR_VALUE(error) ? error : 0;
  37 }
  38
  39 static inline long syscall_get_return_value(struct task_struct *task,
  40                                                 struct pt_regs *regs)
  41 {
  42         return regs->gr[28];
  43 }
  44
  45 static inline void syscall_set_return_value(struct task_struct *task,
  46                                             struct pt_regs *regs,
  47                                             int error, long val)
  48 {
  49         regs->gr[28] = error ? error : val;
  50 }
  51
  52 static inline void syscall_rollback(struct task_struct *task,
  53                                     struct pt_regs *regs)
  54 {
  55         /* do nothing */
  56 }
  57
  58 static inline int syscall_get_arch(struct task_struct *task)
  59 {
  60         int arch = AUDIT_ARCH_PARISC;
  61 #ifdef CONFIG_64BIT
  62         if (!__is_compat_task(task))
  63                 arch = AUDIT_ARCH_PARISC64;
  64 #endif
  65         return arch;
  66 }
  67 #endif /*_ASM_PARISC_SYSCALL_H_*/