LXR linux/arch/parisc/include/asm/syscall.h

   1/* syscall.h */
   2
   3#ifndef _ASM_PARISC_SYSCALL_H_
   4#define _ASM_PARISC_SYSCALL_H_
   5
   6#include <uapi/linux/audit.h>
   7#include <linux/compat.h>
   8#include <linux/err.h>
   9#include <asm/ptrace.h>
  10
  11#define NR_syscalls (__NR_Linux_syscalls)
  12
  13static inline long syscall_get_nr(struct task_struct *tsk,
  14                                  struct pt_regs *regs)
  15{
  16        return regs->gr[20];
  17}
  18
  19static inline void syscall_get_arguments(struct task_struct *tsk,
  20                                         struct pt_regs *regs, unsigned int i,
  21                                         unsigned int n, unsigned long *args)
  22{
  23        BUG_ON(i);
  24
  25        switch (n) {
  26        case 6:
  27                args[5] = regs->gr[21];
  28        case 5:
  29                args[4] = regs->gr[22];
  30        case 4:
  31                args[3] = regs->gr[23];
  32        case 3:
  33                args[2] = regs->gr[24];
  34        case 2:
  35                args[1] = regs->gr[25];
  36        case 1:
  37                args[0] = regs->gr[26];
  38        case 0:
  39                break;
  40        default:
  41                BUG();
  42        }
  43}
  44
  45static inline long syscall_get_return_value(struct task_struct *task,
  46                                                struct pt_regs *regs)
  47{
  48        return regs->gr[28];
  49}
  50
  51static inline void syscall_set_return_value(struct task_struct *task,
  52                                            struct pt_regs *regs,
  53                                            int error, long val)
  54{
  55        regs->gr[28] = error ? error : val;
  56}
  57
  58static inline void syscall_rollback(struct task_struct *task,
  59                                    struct pt_regs *regs)
  60{
  61        /* do nothing */
  62}
  63
  64static inline int syscall_get_arch(void)
  65{
  66        int arch = AUDIT_ARCH_PARISC;
  67#ifdef CONFIG_64BIT
  68        if (!is_compat_task())
  69                arch = AUDIT_ARCH_PARISC64;
  70#endif
  71        return arch;
  72}
  73#endif /*_ASM_PARISC_SYSCALL_H_*/
  74