arch/arm64/include/asm/signal32.h

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2 /*
   3  * Copyright (C) 2012 ARM Ltd.
   4  */
   5 #ifndef __ASM_SIGNAL32_H
   6 #define __ASM_SIGNAL32_H
   7
   8 #ifdef CONFIG_COMPAT
   9 #include <linux/compat.h>
  10
  11 struct compat_sigcontext {
  12         /* We always set these two fields to 0 */
  13         compat_ulong_t                  trap_no;
  14         compat_ulong_t                  error_code;
  15
  16         compat_ulong_t                  oldmask;
  17         compat_ulong_t                  arm_r0;
  18         compat_ulong_t                  arm_r1;
  19         compat_ulong_t                  arm_r2;
  20         compat_ulong_t                  arm_r3;
  21         compat_ulong_t                  arm_r4;
  22         compat_ulong_t                  arm_r5;
  23         compat_ulong_t                  arm_r6;
  24         compat_ulong_t                  arm_r7;
  25         compat_ulong_t                  arm_r8;
  26         compat_ulong_t                  arm_r9;
  27         compat_ulong_t                  arm_r10;
  28         compat_ulong_t                  arm_fp;
  29         compat_ulong_t                  arm_ip;
  30         compat_ulong_t                  arm_sp;
  31         compat_ulong_t                  arm_lr;
  32         compat_ulong_t                  arm_pc;
  33         compat_ulong_t                  arm_cpsr;
  34         compat_ulong_t                  fault_address;
  35 };
  36
  37 struct compat_ucontext {
  38         compat_ulong_t                  uc_flags;
  39         compat_uptr_t                   uc_link;
  40         compat_stack_t                  uc_stack;
  41         struct compat_sigcontext        uc_mcontext;
  42         compat_sigset_t                 uc_sigmask;
  43         int                             __unused[32 - (sizeof(compat_sigset_t) / sizeof(int))];
  44         compat_ulong_t                  uc_regspace[128] __attribute__((__aligned__(8)));
  45 };
  46
  47 struct compat_sigframe {
  48         struct compat_ucontext  uc;
  49         compat_ulong_t          retcode[2];
  50 };
  51
  52 struct compat_rt_sigframe {
  53         struct compat_siginfo info;
  54         struct compat_sigframe sig;
  55 };
  56
  57 int compat_setup_frame(int usig, struct ksignal *ksig, sigset_t *set,
  58                        struct pt_regs *regs);
  59 int compat_setup_rt_frame(int usig, struct ksignal *ksig, sigset_t *set,
  60                           struct pt_regs *regs);
  61
  62 void compat_setup_restart_syscall(struct pt_regs *regs);
  63 #else
  64
  65 static inline int compat_setup_frame(int usid, struct ksignal *ksig,
  66                                      sigset_t *set, struct pt_regs *regs)
  67 {
  68         return -ENOSYS;
  69 }
  70
  71 static inline int compat_setup_rt_frame(int usig, struct ksignal *ksig, sigset_t *set,
  72                                         struct pt_regs *regs)
  73 {
  74         return -ENOSYS;
  75 }
  76
  77 static inline void compat_setup_restart_syscall(struct pt_regs *regs)
  78 {
  79 }
  80 #endif /* CONFIG_COMPAT */
  81 #endif /* __ASM_SIGNAL32_H */