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