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 static inline long syscall_get_nr(struct task_struct *tsk,
  12                                   struct pt_regs *regs)
  13 {
  14         return regs->gr[20];
  15 }
  16
  17 static inline void syscall_get_arguments(struct task_struct *tsk,
  18                                          struct pt_regs *regs, unsigned int i,
  19                                          unsigned int n, unsigned long *args)
  20 {
  21         BUG_ON(i);
  22
  23         switch (n) {
  24         case 6:
  25                 args[5] = regs->gr[21];
  26         case 5:
  27                 args[4] = regs->gr[22];
  28         case 4:
  29                 args[3] = regs->gr[23];
  30         case 3:
  31                 args[2] = regs->gr[24];
  32         case 2:
  33                 args[1] = regs->gr[25];
  34         case 1:
  35                 args[0] = regs->gr[26];
  36                 break;
  37         default:
  38                 BUG();
  39         }
  40 }
  41
  42 static inline void syscall_set_return_value(struct task_struct *task,
  43                                             struct pt_regs *regs,
  44                                             int error, long val)
  45 {
  46         regs->gr[28] = error ? error : val;
  47 }
  48
  49 static inline void syscall_rollback(struct task_struct *task,
  50                                     struct pt_regs *regs)
  51 {
  52         /* do nothing */
  53 }
  54
  55 static inline int syscall_get_arch(void)
  56 {
  57         int arch = AUDIT_ARCH_PARISC;
  58 #ifdef CONFIG_64BIT
  59         if (!is_compat_task())
  60                 arch = AUDIT_ARCH_PARISC64;
  61 #endif
  62         return arch;
  63 }
  64 #endif /*_ASM_PARISC_SYSCALL_H_*/