NetBSD-5.0.2/sys/compat/linux/arch/i386/linux_machdep.h
/* $NetBSD: linux_machdep.h,v 1.35 2008/10/26 17:57:49 christos 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;
};
struct linux_user_desc {
unsigned int entry_number;
unsigned int base_addr;
unsigned int limit;
unsigned int seg_32bit:1;
unsigned int contents:2;
unsigned int read_exec_only:1;
unsigned int limit_in_pages:1;
unsigned int seg_not_present:1;
unsigned int useable:1;
};
struct linux_desc_struct {
unsigned long a, b;
};
#define LINUX_LOWERWORD 0x0000ffff
#define LINUX_GLIBC_TLS_SEL 6
/*
* Macros which does the same thing as those in Linux include/asm-um/ldt-i386.h.
* These convert Linux user space descriptor to machine one.
*/
#define LINUX_LDT_entry_a(info) \
((((info)->base_addr & LINUX_LOWERWORD) << 16) | \
((info)->limit & LINUX_LOWERWORD))
#define LINUX_ENTRY_B_READ_EXEC_ONLY 9
#define LINUX_ENTRY_B_CONTENTS 10
#define LINUX_ENTRY_B_SEG_NOT_PRESENT 15
#define LINUX_ENTRY_B_BASE_ADDR 16
#define LINUX_ENTRY_B_USEABLE 20
#define LINUX_ENTRY_B_SEG32BIT 22
#define LINUX_ENTRY_B_LIMIT 23
#define LINUX_LDT_entry_b(info) \
(((info)->base_addr & 0xff000000) | \
((info)->limit & 0xf0000) | \
((info)->contents << LINUX_ENTRY_B_CONTENTS) | \
(((info)->seg_not_present == 0) << LINUX_ENTRY_B_SEG_NOT_PRESENT) |\
(((info)->base_addr & 0x00ff0000) >> LINUX_ENTRY_B_BASE_ADDR) | \
(((info)->read_exec_only == 0) << LINUX_ENTRY_B_READ_EXEC_ONLY) |\
((info)->seg_32bit << LINUX_ENTRY_B_SEG32BIT) | \
((info)->useable << LINUX_ENTRY_B_USEABLE) | \
((info)->limit_in_pages << LINUX_ENTRY_B_LIMIT) | 0x7000)
#define LINUX_LDT_empty(info) \
((info)->base_addr == 0 && \
(info)->limit == 0 && \
(info)->contents == 0 && \
(info)->seg_not_present == 1 && \
(info)->read_exec_only == 1 && \
(info)->seg_32bit == 0 && \
(info)->limit_in_pages == 0 && \
(info)->useable == 0)
/*
* Macros for converting segments.
* They do the same as those in arch/i386/kernel/process.c in Linux.
*/
#define LINUX_GET_BASE(desc) \
((((desc)->a >> 16) & LINUX_LOWERWORD) | \
(((desc)->b << 16) & 0x00ff0000) | \
((desc)->b & 0xff000000))
#define LINUX_GET_LIMIT(desc) \
(((desc)->a & LINUX_LOWERWORD) | \
((desc)->b & 0xf0000))
#define LINUX_GET_32BIT(desc) \
(((desc)->b >> LINUX_ENTRY_B_SEG32BIT) & 1)
#define LINUX_GET_CONTENTS(desc) \
(((desc)->b >> LINUX_ENTRY_B_CONTENTS) & 3)
#define LINUX_GET_WRITABLE(desc) \
(((desc)->b >> LINUX_ENTRY_B_READ_EXEC_ONLY) & 1)
#define LINUX_GET_LIMIT_PAGES(desc) \
(((desc)->b >> LINUX_ENTRY_B_LIMIT) & 1)
#define LINUX_GET_PRESENT(desc) \
(((desc)->b >> LINUX_ENTRY_B_SEG_NOT_PRESENT) & 1)
#define LINUX_GET_USEABLE(desc) \
(((desc)->b >> LINUX_ENTRY_B_USEABLE) & 1)
/*
* 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 LKMs (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_NPTL
#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 */