/*      $NetBSD: linux_machdep.h,v 1.37 2010/07/07 01:30:34 chs Exp $   */

/*-
 * Copyright (c) 1995, 2000 The NetBSD Foundation, Inc.
 * All rights reserved.
 *
 * This code is derived from software contributed to The NetBSD Foundation
 * by Frank van der Linden.
 *
 * 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 NETBSD FOUNDATION, INC. 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 FOUNDATION 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 _I386_LINUX_MACHDEP_H
#define _I386_LINUX_MACHDEP_H

#include <compat/linux/common/linux_types.h>
#include <compat/linux/common/linux_signal.h>
#include <compat/linux/common/linux_siginfo.h>

/*
 * The Linux sigcontext, pretty much a standard 386 trapframe.
 */
struct linux_fpreg {
        uint16_t        mant[4];
        uint16_t        expo;
};

struct linux_fpxreg {
        uint16_t        mant[4];
        uint16_t        expo;
        uint16_t        pad[3];
};

struct linux_xmmreg {
        uint32_t        reg[4];
};

struct linux_fpstate {
        uint32_t        cw;
        uint32_t        sw;
        uint32_t        tag;
        uint32_t        ipoff;
        uint32_t        cssel;
        uint32_t        dataoff;
        uint32_t        datasel;
        struct linux_fpreg      st[8];
        uint16_t        status;
        uint16_t        magic;
        uint32_t        fxsr_env[6];
        uint32_t        mxcsr;
        uint32_t        reserved;
        struct linux_fpxreg     fxsr_st[8];
        struct linux_xmmreg     xmm[8];
        uint32_t        padding[56];
};


struct linux_sigcontext {
        int     sc_gs;
        int     sc_fs;
        int     sc_es;
        int     sc_ds;
        int     sc_edi;
        int     sc_esi;
        int     sc_ebp;
        int     sc_esp;
        int     sc_ebx;
        int     sc_edx;
        int     sc_ecx;
        int     sc_eax;
        int     sc_trapno;
        int     sc_err;
        int     sc_eip;
        int     sc_cs;
        int     sc_eflags;
        int     sc_esp_at_signal;
        int     sc_ss;
        struct linux_fpstate *sc_387;
        /* XXX check this */
        linux_old_sigset_t sc_mask;
        int     sc_cr2;
};

struct linux_libc_fpreg {
        unsigned short  significand[4];
        unsigned short  exponent;
};

struct linux_libc_fpstate {
        unsigned long cw;
        unsigned long sw;
        unsigned long tag;
        unsigned long ipoff;
        unsigned long cssel;
        unsigned long dataoff;
        unsigned long datasel;
        struct linux_libc_fpreg _st[8];
        unsigned long status;
};

struct linux_ucontext {
        unsigned long   uc_flags;
        struct ucontext *uc_link;
        struct linux_sigaltstack uc_stack;
        struct linux_sigcontext uc_mcontext;
        linux_sigset_t uc_sigmask;
        struct linux_libc_fpstate uc_fpregs_mem;
};

/*
 * We make the stack look like Linux expects it when calling a signal
 * handler, but use the BSD way of calling the handler and sigreturn().
 * This means that we need to pass the pointer to the handler too.
 * It is appended to the frame to not interfere with the rest of it.
 */
struct linux_rt_sigframe {
        int     sf_sig;
        struct  linux_siginfo  *sf_sip;
        struct  linux_ucontext *sf_ucp;
        struct  linux_siginfo  sf_si;
        struct  linux_ucontext sf_uc;
        sig_t   sf_handler;
};

struct linux_sigframe {
        int     sf_sig;
        struct  linux_sigcontext sf_sc;
        sig_t   sf_handler;
};

/*
 * Used in ugly patch to fake device numbers.
 */
/* Major device numbers for new style ptys. */
#define LINUX_PTC_MAJOR         2
#define LINUX_PTS_MAJOR         3
/* Major device numbers of VT device on both Linux and NetBSD. */
#define LINUX_CONS_MAJOR        4

/*
 * Linux ioctl calls for the keyboard.
 */
#define LINUX_KDGKBMODE   0x4b44
#define LINUX_KDSKBMODE   0x4b45
#define LINUX_KDMKTONE    0x4b30
#define LINUX_KDSETMODE   0x4b3a
#define LINUX_KDGETMODE   0x4b3b
#define LINUX_KDENABIO    0x4b36
#define LINUX_KDDISABIO   0x4b37
#define LINUX_KDGETLED    0x4b31
#define LINUX_KDSETLED    0x4b32
#define LINUX_KDGKBTYPE   0x4b33
#define LINUX_KDGKBENT    0x4b46
#define LINUX_KIOCSOUND   0x4b2f

/*
 * Mode for KDSKBMODE which we don't have (we just use plain mode for this)
 */
#define LINUX_K_MEDIUMRAW 2

/*
 * VT ioctl calls in Linux (the ones that the pcvt emulation in wscons can handle)
 */
#define LINUX_VT_OPENQRY    0x5600
#define LINUX_VT_GETMODE    0x5601
#define LINUX_VT_SETMODE    0x5602
#define LINUX_VT_GETSTATE   0x5603
#define LINUX_VT_RELDISP    0x5605
#define LINUX_VT_ACTIVATE   0x5606
#define LINUX_VT_WAITACTIVE 0x5607
#define LINUX_VT_DISALLOCATE    0x5608

/*
 * This range used by VMWare (XXX)
 */
#define LINUX_VMWARE_NONE 200
#define LINUX_VMWARE_LAST 237

/*
 * Range of ioctls to just pass on, so that modules (like VMWare) can
 * handle them.
 */
#define LINUX_IOCTL_MIN_PASS    LINUX_VMWARE_NONE
#define LINUX_IOCTL_MAX_PASS    (LINUX_VMWARE_LAST+8)

#define LINUX_UNAME_ARCH        linux_get_uname_arch()

#define LINUX_LWP_SETPRIVATE    linux_lwp_setprivate

#ifdef _KERNEL
__BEGIN_DECLS
void linux_syscall_intern(struct proc *);
const char *linux_get_uname_arch(void);
__END_DECLS
#endif /* !_KERNEL */

#endif /* _I386_LINUX_MACHDEP_H */