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 
compat_setup_frame(int usid,struct ksignal * ksig,sigset_t * set,struct pt_regs * regs)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 
compat_setup_rt_frame(int usig,struct ksignal * ksig,sigset_t * set,struct pt_regs * regs)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 
compat_setup_restart_syscall(struct pt_regs * regs)77 static inline void compat_setup_restart_syscall(struct pt_regs *regs)
78 {
79 }
80 #endif /* CONFIG_COMPAT */
81 #endif /* __ASM_SIGNAL32_H */
82