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
  13 static inline long syscall_get_nr(struct task_struct *tsk,
  14                                   struct pt_regs *regs)
  15 {
  16         return regs->gr[20];
  17 }
  18
  19 static 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
  45 static inline long syscall_get_return_value(struct task_struct *task,
  46                                                 struct pt_regs *regs)
  47 {
  48         return regs->gr[28];
  49 }
  50
  51 static 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
  58 static inline void syscall_rollback(struct task_struct *task,
  59                                     struct pt_regs *regs)
  60 {
  61         /* do nothing */
  62 }
  63
  64 static 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_*/