sys/compat/linux/arch/i386/linux_machdep.h

   1 /*      $NetBSD: linux_machdep.h,v 1.35 2008/10/26 17:57:49 christos Exp $      */
   2
   3 /*-
   4  * Copyright (c) 1995, 2000 The NetBSD Foundation, Inc.
   5  * All rights reserved.
   6  *
   7  * This code is derived from software contributed to The NetBSD Foundation
   8  * by Frank van der Linden.
   9  *
  10  * Redistribution and use in source and binary forms, with or without
  11  * modification, are permitted provided that the following conditions
  12  * are met:
  13  * 1. Redistributions of source code must retain the above copyright
  14  *    notice, this list of conditions and the following disclaimer.
  15  * 2. Redistributions in binary form must reproduce the above copyright
  16  *    notice, this list of conditions and the following disclaimer in the
  17  *    documentation and/or other materials provided with the distribution.
  18  *
  19  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
  20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
  23  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  29  * POSSIBILITY OF SUCH DAMAGE.
  30  */
  31
  32 #ifndef _I386_LINUX_MACHDEP_H
  33 #define _I386_LINUX_MACHDEP_H
  34
  35 #include <compat/linux/common/linux_types.h>
  36 #include <compat/linux/common/linux_signal.h>
  37 #include <compat/linux/common/linux_siginfo.h>
  38
  39 /*
  40  * The Linux sigcontext, pretty much a standard 386 trapframe.
  41  */
  42 struct linux_fpreg {
  43         uint16_t        mant[4];
  44         uint16_t        expo;
  45 };
  46
  47 struct linux_fpxreg {
  48         uint16_t        mant[4];
  49         uint16_t        expo;
  50         uint16_t        pad[3];
  51 };
  52
  53 struct linux_xmmreg {
  54         uint32_t        reg[4];
  55 };
  56
  57 struct linux_fpstate {
  58         uint32_t        cw;
  59         uint32_t        sw;
  60         uint32_t        tag;
  61         uint32_t        ipoff;
  62         uint32_t        cssel;
  63         uint32_t        dataoff;
  64         uint32_t        datasel;
  65         struct linux_fpreg      st[8];
  66         uint16_t        status;
  67         uint16_t        magic;
  68         uint32_t        fxsr_env[6];
  69         uint32_t        mxcsr;
  70         uint32_t        reserved;
  71         struct linux_fpxreg     fxsr_st[8];
  72         struct linux_xmmreg     xmm[8];
  73         uint32_t        padding[56];
  74 };
  75
  76
  77 struct linux_sigcontext {
  78         int     sc_gs;
  79         int     sc_fs;
  80         int     sc_es;
  81         int     sc_ds;
  82         int     sc_edi;
  83         int     sc_esi;
  84         int     sc_ebp;
  85         int     sc_esp;
  86         int     sc_ebx;
  87         int     sc_edx;
  88         int     sc_ecx;
  89         int     sc_eax;
  90         int     sc_trapno;
  91         int     sc_err;
  92         int     sc_eip;
  93         int     sc_cs;
  94         int     sc_eflags;
  95         int     sc_esp_at_signal;
  96         int     sc_ss;
  97         struct linux_fpstate *sc_387;
  98         /* XXX check this */
  99         linux_old_sigset_t sc_mask;
 100         int     sc_cr2;
 101 };
 102
 103 struct linux_libc_fpreg {
 104         unsigned short  significand[4];
 105         unsigned short  exponent;
 106 };
 107
 108 struct linux_libc_fpstate {
 109         unsigned long cw;
 110         unsigned long sw;
 111         unsigned long tag;
 112         unsigned long ipoff;
 113         unsigned long cssel;
 114         unsigned long dataoff;
 115         unsigned long datasel;
 116         struct linux_libc_fpreg _st[8];
 117         unsigned long status;
 118 };
 119
 120 struct linux_ucontext {
 121         unsigned long   uc_flags;
 122         struct ucontext *uc_link;
 123         struct linux_sigaltstack uc_stack;
 124         struct linux_sigcontext uc_mcontext;
 125         linux_sigset_t uc_sigmask;
 126         struct linux_libc_fpstate uc_fpregs_mem;
 127 };
 128
 129 /*
 130  * We make the stack look like Linux expects it when calling a signal
 131  * handler, but use the BSD way of calling the handler and sigreturn().
 132  * This means that we need to pass the pointer to the handler too.
 133  * It is appended to the frame to not interfere with the rest of it.
 134  */
 135 struct linux_rt_sigframe {
 136         int     sf_sig;
 137         struct  linux_siginfo  *sf_sip;
 138         struct  linux_ucontext *sf_ucp;
 139         struct  linux_siginfo  sf_si;
 140         struct  linux_ucontext sf_uc;
 141         sig_t   sf_handler;
 142 };
 143
 144 struct linux_sigframe {
 145         int     sf_sig;
 146         struct  linux_sigcontext sf_sc;
 147         sig_t   sf_handler;
 148 };
 149
 150 struct linux_user_desc {
 151         unsigned int            entry_number;
 152         unsigned int            base_addr;
 153         unsigned int            limit;
 154         unsigned int            seg_32bit:1;
 155         unsigned int            contents:2;
 156         unsigned int            read_exec_only:1;
 157         unsigned int            limit_in_pages:1;
 158         unsigned int            seg_not_present:1;
 159         unsigned int            useable:1;
 160 };
 161
 162 struct linux_desc_struct {
 163         unsigned long   a, b;
 164 };
 165
 166
 167 #define LINUX_LOWERWORD 0x0000ffff
 168
 169 #define LINUX_GLIBC_TLS_SEL     6
 170
 171 /*
 172  * Macros which does the same thing as those in Linux include/asm-um/ldt-i386.h.
 173  * These convert Linux user space descriptor to machine one.
 174  */
 175 #define LINUX_LDT_entry_a(info)                                 \
 176         ((((info)->base_addr & LINUX_LOWERWORD) << 16) |        \
 177         ((info)->limit & LINUX_LOWERWORD))
 178
 179 #define LINUX_ENTRY_B_READ_EXEC_ONLY    9
 180 #define LINUX_ENTRY_B_CONTENTS          10
 181 #define LINUX_ENTRY_B_SEG_NOT_PRESENT   15
 182 #define LINUX_ENTRY_B_BASE_ADDR         16
 183 #define LINUX_ENTRY_B_USEABLE           20
 184 #define LINUX_ENTRY_B_SEG32BIT          22
 185 #define LINUX_ENTRY_B_LIMIT             23
 186
 187 #define LINUX_LDT_entry_b(info)                                         \
 188         (((info)->base_addr & 0xff000000) |                             \
 189         ((info)->limit & 0xf0000) |                                     \
 190         ((info)->contents << LINUX_ENTRY_B_CONTENTS) |                  \
 191         (((info)->seg_not_present == 0) << LINUX_ENTRY_B_SEG_NOT_PRESENT) |\
 192         (((info)->base_addr & 0x00ff0000) >> LINUX_ENTRY_B_BASE_ADDR) | \
 193         (((info)->read_exec_only == 0) << LINUX_ENTRY_B_READ_EXEC_ONLY) |\
 194         ((info)->seg_32bit << LINUX_ENTRY_B_SEG32BIT) |                 \
 195         ((info)->useable << LINUX_ENTRY_B_USEABLE) |                    \
 196         ((info)->limit_in_pages << LINUX_ENTRY_B_LIMIT) | 0x7000)
 197
 198 #define LINUX_LDT_empty(info)           \
 199         ((info)->base_addr == 0 &&      \
 200         (info)->limit == 0 &&           \
 201         (info)->contents == 0 &&        \
 202         (info)->seg_not_present == 1 && \
 203         (info)->read_exec_only == 1 &&  \
 204         (info)->seg_32bit == 0 &&       \
 205         (info)->limit_in_pages == 0 &&  \
 206         (info)->useable == 0)
 207
 208 /*
 209  * Macros for converting segments.
 210  * They do the same as those in arch/i386/kernel/process.c in Linux.
 211  */
 212 #define LINUX_GET_BASE(desc)                            \
 213         ((((desc)->a >> 16) & LINUX_LOWERWORD) |        \
 214         (((desc)->b << 16) & 0x00ff0000) |              \
 215         ((desc)->b & 0xff000000))
 216
 217 #define LINUX_GET_LIMIT(desc)                   \
 218         (((desc)->a & LINUX_LOWERWORD) |        \
 219         ((desc)->b & 0xf0000))
 220
 221 #define LINUX_GET_32BIT(desc)           \
 222         (((desc)->b >> LINUX_ENTRY_B_SEG32BIT) & 1)
 223 #define LINUX_GET_CONTENTS(desc)        \
 224         (((desc)->b >> LINUX_ENTRY_B_CONTENTS) & 3)
 225 #define LINUX_GET_WRITABLE(desc)        \
 226         (((desc)->b >> LINUX_ENTRY_B_READ_EXEC_ONLY) & 1)
 227 #define LINUX_GET_LIMIT_PAGES(desc)     \
 228         (((desc)->b >> LINUX_ENTRY_B_LIMIT) & 1)
 229 #define LINUX_GET_PRESENT(desc)         \
 230         (((desc)->b >> LINUX_ENTRY_B_SEG_NOT_PRESENT) & 1)
 231 #define LINUX_GET_USEABLE(desc)         \
 232         (((desc)->b >> LINUX_ENTRY_B_USEABLE) & 1)
 233
 234 /*
 235  * Used in ugly patch to fake device numbers.
 236  */
 237 /* Major device numbers for new style ptys. */
 238 #define LINUX_PTC_MAJOR         2
 239 #define LINUX_PTS_MAJOR         3
 240 /* Major device numbers of VT device on both Linux and NetBSD. */
 241 #define LINUX_CONS_MAJOR        4
 242
 243 /*
 244  * Linux ioctl calls for the keyboard.
 245  */
 246 #define LINUX_KDGKBMODE   0x4b44
 247 #define LINUX_KDSKBMODE   0x4b45
 248 #define LINUX_KDMKTONE    0x4b30
 249 #define LINUX_KDSETMODE   0x4b3a
 250 #define LINUX_KDGETMODE   0x4b3b
 251 #define LINUX_KDENABIO    0x4b36
 252 #define LINUX_KDDISABIO   0x4b37
 253 #define LINUX_KDGETLED    0x4b31
 254 #define LINUX_KDSETLED    0x4b32
 255 #define LINUX_KDGKBTYPE   0x4b33
 256 #define LINUX_KDGKBENT    0x4b46
 257 #define LINUX_KIOCSOUND   0x4b2f
 258
 259 /*
 260  * Mode for KDSKBMODE which we don't have (we just use plain mode for this)
 261  */
 262 #define LINUX_K_MEDIUMRAW 2
 263
 264 /*
 265  * VT ioctl calls in Linux (the ones that the pcvt emulation in wscons can handle)
 266  */
 267 #define LINUX_VT_OPENQRY    0x5600
 268 #define LINUX_VT_GETMODE    0x5601
 269 #define LINUX_VT_SETMODE    0x5602
 270 #define LINUX_VT_GETSTATE   0x5603
 271 #define LINUX_VT_RELDISP    0x5605
 272 #define LINUX_VT_ACTIVATE   0x5606
 273 #define LINUX_VT_WAITACTIVE 0x5607
 274 #define LINUX_VT_DISALLOCATE    0x5608
 275
 276 /*
 277  * This range used by VMWare (XXX)
 278  */
 279 #define LINUX_VMWARE_NONE 200
 280 #define LINUX_VMWARE_LAST 237
 281
 282 /*
 283  * Range of ioctls to just pass on, so that modules (like VMWare) can
 284  * handle them.
 285  */
 286 #define LINUX_IOCTL_MIN_PASS    LINUX_VMWARE_NONE
 287 #define LINUX_IOCTL_MAX_PASS    (LINUX_VMWARE_LAST+8)
 288
 289 #define LINUX_UNAME_ARCH        linux_get_uname_arch()
 290 #define LINUX_NPTL
 291
 292 #ifdef _KERNEL
 293 __BEGIN_DECLS
 294 void linux_syscall_intern(struct proc *);
 295 const char *linux_get_uname_arch(void);
 296 __END_DECLS
 297 #endif /* !_KERNEL */
 298
 299 #endif /* _I386_LINUX_MACHDEP_H */