/*-
 * SPDX-License-Identifier: BSD-2-Clause
 *
 * Copyright (c) 1994-1996 Søren Schmidt
 * All rights reserved.
 * Copyright (c) 2013 Dmitry Chagin <dchagin@FreeBSD.org>
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

#ifndef _AMD64_LINUX_H_
#define _AMD64_LINUX_H_

#include <sys/abi_compat.h>

#include <compat/linux/linux.h>
#include <amd64/linux/linux_syscall.h>

#define LINUX_LEGACY_SYSCALLS

#define LINUX_DTRACE    linuxulator

/*
 * Provide a separate set of types for the Linux types.
 */
typedef int32_t         l_int;
typedef int64_t         l_long;
typedef int16_t         l_short;
typedef uint32_t        l_uint;
typedef uint64_t        l_ulong;
typedef uint16_t        l_ushort;

typedef l_ulong         l_uintptr_t;
typedef l_long          l_clock_t;
typedef l_int           l_daddr_t;
typedef l_uint          l_gid_t;
typedef l_ushort        l_gid16_t;
typedef l_uint          l_uid_t;
typedef l_ushort        l_uid16_t;
typedef l_ulong         l_ino_t;
typedef l_int           l_key_t;
typedef l_long          l_loff_t;
typedef l_uint          l_mode_t;
typedef l_long          l_off_t;
typedef l_int           l_pid_t;
typedef l_ulong         l_size_t;
typedef l_long          l_ssize_t;
typedef l_long          l_suseconds_t;
typedef l_long          l_time_t;
typedef l_int           l_timer_t;
typedef l_int           l_mqd_t;
typedef l_size_t        l_socklen_t;
typedef l_ulong         l_fd_mask;

#include <compat/linux/linux_siginfo.h>

typedef struct {
        l_int           val[2];
} l_fsid_t;

typedef struct {
        l_time_t        tv_sec;
        l_suseconds_t   tv_usec;
} l_timeval;

#define l_fd_set        fd_set

/*
 * Miscellaneous
 */
#define LINUX_AT_COUNT          21      /* Count of used aux entry types.
                                         * Keep this synchronized with
                                         * linux_copyout_auxargs() code.
                                         */

struct l___sysctl_args
{
        l_uintptr_t     name;
        l_int           nlen;
        l_uintptr_t     oldval;
        l_uintptr_t     oldlenp;
        l_uintptr_t     newval;
        l_size_t        newlen;
        l_ulong         __spare[4];
};

/* Resource limits */
#define LINUX_RLIMIT_CPU        0
#define LINUX_RLIMIT_FSIZE      1
#define LINUX_RLIMIT_DATA       2
#define LINUX_RLIMIT_STACK      3
#define LINUX_RLIMIT_CORE       4
#define LINUX_RLIMIT_RSS        5
#define LINUX_RLIMIT_NPROC      6
#define LINUX_RLIMIT_NOFILE     7
#define LINUX_RLIMIT_MEMLOCK    8
#define LINUX_RLIMIT_AS         9       /* Address space limit */

#define LINUX_RLIM_NLIMITS      10

struct l_rlimit {
        l_ulong         rlim_cur;
        l_ulong         rlim_max;
};

/*
 * stat family of syscalls
 */
struct l_timespec {
        l_time_t        tv_sec;
        l_long          tv_nsec;
};

struct l_newstat {
        l_ulong         st_dev;
        l_ino_t         st_ino;
        l_ulong         st_nlink;
        l_uint          st_mode;
        l_uid_t         st_uid;
        l_gid_t         st_gid;
        l_uint          __st_pad0;
        l_ulong         st_rdev;
        l_off_t         st_size;
        l_long          st_blksize;
        l_long          st_blocks;
        struct l_timespec       st_atim;
        struct l_timespec       st_mtim;
        struct l_timespec       st_ctim;
        l_long          __unused1;
        l_long          __unused2;
        l_long          __unused3;
};

/* sigaction flags */
#define LINUX_SA_NOCLDSTOP      0x00000001
#define LINUX_SA_NOCLDWAIT      0x00000002
#define LINUX_SA_SIGINFO        0x00000004
#define LINUX_SA_RESTORER       0x04000000
#define LINUX_SA_ONSTACK        0x08000000
#define LINUX_SA_RESTART        0x10000000
#define LINUX_SA_INTERRUPT      0x20000000
#define LINUX_SA_NOMASK         0x40000000
#define LINUX_SA_ONESHOT        0x80000000

/* sigaltstack */
#define LINUX_MINSIGSTKSZ       2048

typedef void    (*l_handler_t)(l_int);

typedef struct {
        l_handler_t     lsa_handler;
        l_ulong         lsa_flags;
        l_uintptr_t     lsa_restorer;
        l_sigset_t      lsa_mask;
} l_sigaction_t;

typedef struct {
        l_uintptr_t     ss_sp;
        l_int           ss_flags;
        l_size_t        ss_size;
} l_stack_t;

/*
 * mount flags
 */
#define LINUX_MS_RDONLY         0x0001
#define LINUX_MS_NOSUID         0x0002
#define LINUX_MS_NODEV          0x0004
#define LINUX_MS_NOEXEC         0x0008
#define LINUX_MS_REMOUNT        0x0020

union l_semun {
        l_int           val;
        l_uintptr_t     buf;
        l_uintptr_t     array;
        l_uintptr_t     __buf;
        l_uintptr_t     __pad;
};

#define LINUX_ARCH_SET_GS               0x1001
#define LINUX_ARCH_SET_FS               0x1002
#define LINUX_ARCH_GET_FS               0x1003
#define LINUX_ARCH_GET_GS               0x1004
#define LINUX_ARCH_CET_STATUS           0x3001

#define linux_copyout_rusage(r, u)      copyout(r, u, sizeof(*r))

/* This corresponds to 'struct user_regs_struct' in Linux. */
struct linux_pt_regset {
        l_ulong r15;
        l_ulong r14;
        l_ulong r13;
        l_ulong r12;
        l_ulong rbp;
        l_ulong rbx;
        l_ulong r11;
        l_ulong r10;
        l_ulong r9;
        l_ulong r8;
        l_ulong rax;
        l_ulong rcx;
        l_ulong rdx;
        l_ulong rsi;
        l_ulong rdi;
        l_ulong orig_rax;
        l_ulong rip;
        l_ulong cs;
        l_ulong eflags;
        l_ulong rsp;
        l_ulong ss;
        l_ulong fs_base;
        l_ulong gs_base;
        l_ulong ds;
        l_ulong es;
        l_ulong fs;
        l_ulong gs;
};

#ifdef _KERNEL
struct reg;
struct syscall_info;

void    bsd_to_linux_regset(const struct reg *b_reg,
            struct linux_pt_regset *l_regset);
void    linux_to_bsd_regset(struct reg *b_reg,
            const struct linux_pt_regset *l_regset);
void    linux_ptrace_get_syscall_info_machdep(const struct reg *reg,
            struct syscall_info *si);
int     linux_ptrace_getregs_machdep(struct thread *td, pid_t pid,
            struct linux_pt_regset *l_regset);
int     linux_ptrace_peekuser(struct thread *td, pid_t pid,
            void *addr, void *data);
int     linux_ptrace_pokeuser(struct thread *td, pid_t pid,
            void *addr, void *data);
#endif /* _KERNEL */

#endif /* !_AMD64_LINUX_H_ */