/* SPDX-License-Identifier: GPL-2.0-only */
/*
 * Copyright (C) 2012 ARM Ltd.
 */
#ifndef __ASM_SIGNAL32_H
#define __ASM_SIGNAL32_H

#ifdef CONFIG_COMPAT
#include <linux/compat.h>

struct compat_sigcontext {
        /* We always set these two fields to 0 */
        compat_ulong_t                  trap_no;
        compat_ulong_t                  error_code;

        compat_ulong_t                  oldmask;
        compat_ulong_t                  arm_r0;
        compat_ulong_t                  arm_r1;
        compat_ulong_t                  arm_r2;
        compat_ulong_t                  arm_r3;
        compat_ulong_t                  arm_r4;
        compat_ulong_t                  arm_r5;
        compat_ulong_t                  arm_r6;
        compat_ulong_t                  arm_r7;
        compat_ulong_t                  arm_r8;
        compat_ulong_t                  arm_r9;
        compat_ulong_t                  arm_r10;
        compat_ulong_t                  arm_fp;
        compat_ulong_t                  arm_ip;
        compat_ulong_t                  arm_sp;
        compat_ulong_t                  arm_lr;
        compat_ulong_t                  arm_pc;
        compat_ulong_t                  arm_cpsr;
        compat_ulong_t                  fault_address;
};

struct compat_ucontext {
        compat_ulong_t                  uc_flags;
        compat_uptr_t                   uc_link;
        compat_stack_t                  uc_stack;
        struct compat_sigcontext        uc_mcontext;
        compat_sigset_t                 uc_sigmask;
        int                             __unused[32 - (sizeof(compat_sigset_t) / sizeof(int))];
        compat_ulong_t                  uc_regspace[128] __attribute__((__aligned__(8)));
};

struct compat_sigframe {
        struct compat_ucontext  uc;
        compat_ulong_t          retcode[2];
};

struct compat_rt_sigframe {
        struct compat_siginfo info;
        struct compat_sigframe sig;
};

int compat_setup_frame(int usig, struct ksignal *ksig, sigset_t *set,
                       struct pt_regs *regs);
int compat_setup_rt_frame(int usig, struct ksignal *ksig, sigset_t *set,
                          struct pt_regs *regs);

void compat_setup_restart_syscall(struct pt_regs *regs);
#else

static inline int compat_setup_frame(int usid, struct ksignal *ksig,
                                     sigset_t *set, struct pt_regs *regs)
{
        return -ENOSYS;
}

static inline int compat_setup_rt_frame(int usig, struct ksignal *ksig, sigset_t *set,
                                        struct pt_regs *regs)
{
        return -ENOSYS;
}

static inline void compat_setup_restart_syscall(struct pt_regs *regs)
{
}
#endif /* CONFIG_COMPAT */
#endif /* __ASM_SIGNAL32_H */