/*      $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 */