include/reactos/libs/fast486/fast486.h

   1 /*
   2  * Fast486 386/486 CPU Emulation Library
   3  * fast486.h
   4  *
   5  * Copyright (C) 2013 Aleksandar Andrejevic <theflash AT sdf DOT lonestar DOT org>
   6  *
   7  * This program is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU General Public License
   9  * as published by the Free Software Foundation; either version 2
  10  * of the License, or (at your option) any later version.
  11  *
  12  * This program is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License
  18  * along with this program; if not, write to the Free Software
  19  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
  20  */
  21
  22 #ifndef _FAST486_H_
  23 #define _FAST486_H_
  24
  25 #pragma once
  26
  27 /* DEFINES ********************************************************************/
  28
  29 #ifndef FASTCALL
  30 #define FASTCALL __fastcall
  31 #endif
  32
  33 #define FAST486_NUM_GEN_REGS    8
  34 #define FAST486_NUM_SEG_REGS    6
  35 #define FAST486_NUM_CTRL_REGS   3
  36 #define FAST486_NUM_DBG_REGS    6
  37
  38 #define FAST486_CR0_PE  (1 << 0)
  39 #define FAST486_CR0_MP  (1 << 1)
  40 #define FAST486_CR0_EM  (1 << 2)
  41 #define FAST486_CR0_TS  (1 << 3)
  42 #define FAST486_CR0_ET  (1 << 4)
  43 #define FAST486_CR0_NE  (1 << 5)
  44 #define FAST486_CR0_WP  (1 << 16)
  45 #define FAST486_CR0_AM  (1 << 18)
  46 #define FAST486_CR0_NW  (1 << 29)
  47 #define FAST486_CR0_CD  (1 << 30)
  48 #define FAST486_CR0_PG  (1 << 31)
  49
  50 #define FAST486_DR4_B0 (1 << 0)
  51 #define FAST486_DR4_B1 (1 << 1)
  52 #define FAST486_DR4_B2 (1 << 2)
  53 #define FAST486_DR4_B3 (1 << 3)
  54 #define FAST486_DR4_BD (1 << 13)
  55 #define FAST486_DR4_BS (1 << 14)
  56 #define FAST486_DR4_BT (1 << 15)
  57
  58 #define FAST486_DR5_L0 (1 << 0)
  59 #define FAST486_DR5_G0 (1 << 1)
  60 #define FAST486_DR5_L1 (1 << 2)
  61 #define FAST486_DR5_G1 (1 << 3)
  62 #define FAST486_DR5_L2 (1 << 4)
  63 #define FAST486_DR5_G2 (1 << 5)
  64 #define FAST486_DR5_L3 (1 << 6)
  65 #define FAST486_DR5_G3 (1 << 7)
  66 #define FAST486_DR5_LE (1 << 8)
  67 #define FAST486_DR5_GE (1 << 9)
  68 #define FAST486_DR5_GD (1 << 13)
  69
  70 #define FAST486_DBG_BREAK_EXEC 0
  71 #define FAST486_DBG_BREAK_WRITE 1
  72 #define FAST486_DBG_BREAK_READWRITE 3
  73
  74 #define FAST486_DR4_RESERVED 0xFFFF1FF0
  75 #define FAST486_DR5_RESERVED 0x0000DC00
  76
  77 #define FAST486_IDT_TASK_GATE       0x5
  78 #define FAST486_IDT_INT_GATE        0x6
  79 #define FAST486_IDT_TRAP_GATE       0x7
  80 #define FAST486_IDT_INT_GATE_32     0xE
  81 #define FAST486_IDT_TRAP_GATE_32    0xF
  82
  83 #define FAST486_PREFIX_SEG      (1 << 0)
  84 #define FAST486_PREFIX_OPSIZE   (1 << 1)
  85 #define FAST486_PREFIX_ADSIZE   (1 << 2)
  86 #define FAST486_PREFIX_LOCK     (1 << 3)
  87 #define FAST486_PREFIX_REPNZ    (1 << 4)
  88 #define FAST486_PREFIX_REP      (1 << 5)
  89
  90 struct _FAST486_STATE;
  91 typedef struct _FAST486_STATE FAST486_STATE, *PFAST486_STATE;
  92
  93 typedef enum _FAST486_GEN_REGS
  94 {
  95     FAST486_REG_EAX,
  96     FAST486_REG_ECX,
  97     FAST486_REG_EDX,
  98     FAST486_REG_EBX,
  99     FAST486_REG_ESP,
 100     FAST486_REG_EBP,
 101     FAST486_REG_ESI,
 102     FAST486_REG_EDI
 103 } FAST486_GEN_REGS, *PFAST486_GEN_REGS;
 104
 105 typedef enum _FAST486_SEG_REGS
 106 {
 107     FAST486_REG_ES,
 108     FAST486_REG_CS,
 109     FAST486_REG_SS,
 110     FAST486_REG_DS,
 111     FAST486_REG_FS,
 112     FAST486_REG_GS
 113 } FAST486_SEG_REGS, *PFAST486_SEG_REGS;
 114
 115 typedef enum _FAST486_CTRL_REGS
 116 {
 117     FAST486_REG_CR0 = 0,
 118     FAST486_REG_CR2 = 1,
 119     FAST486_REG_CR3 = 2,
 120 } FAST486_CTRL_REGS, *PFAST486_CTRL_REGS;
 121
 122 typedef enum _FAST486_DBG_REGS
 123 {
 124     FAST486_REG_DR0 = 0,
 125     FAST486_REG_DR1 = 1,
 126     FAST486_REG_DR2 = 2,
 127     FAST486_REG_DR3 = 3,
 128     FAST486_REG_DR4 = 4,
 129     FAST486_REG_DR5 = 5,
 130     FAST486_REG_DR6 = 4, // alias to DR4
 131     FAST486_REG_DR7 = 5  // alias to DR5
 132 } FAST486_DBG_REGS, *PFAST486_DBG_REGS;
 133
 134 typedef enum _FAST486_EXCEPTIONS
 135 {
 136     FAST486_EXCEPTION_DE = 0x00,
 137     FAST486_EXCEPTION_DB = 0x01,
 138     FAST486_EXCEPTION_BP = 0x03,
 139     FAST486_EXCEPTION_OF = 0x04,
 140     FAST486_EXCEPTION_BR = 0x05,
 141     FAST486_EXCEPTION_UD = 0x06,
 142     FAST486_EXCEPTION_NM = 0x07,
 143     FAST486_EXCEPTION_DF = 0x08,
 144     FAST486_EXCEPTION_TS = 0x0A,
 145     FAST486_EXCEPTION_NP = 0x0B,
 146     FAST486_EXCEPTION_SS = 0x0C,
 147     FAST486_EXCEPTION_GP = 0x0D,
 148     FAST486_EXCEPTION_PF = 0x0E,
 149     FAST486_EXCEPTION_MF = 0x10,
 150     FAST486_EXCEPTION_AC = 0x11,
 151     FAST486_EXCEPTION_MC = 0x12
 152 } FAST486_EXCEPTIONS, *PFAST486_EXCEPTIONS;
 153
 154 typedef enum _FAST486_INT_STATUS
 155 {
 156     FAST486_INT_NONE = 0,
 157     FAST486_INT_EXECUTE = 1,
 158     FAST486_INT_SIGNAL = 2
 159 } FAST486_INT_STATUS, *PFAST486_INT_STATUS;
 160
 161 typedef
 162 VOID
 163 (NTAPI *FAST486_MEM_READ_PROC)
 164 (
 165     PFAST486_STATE State,
 166     ULONG Address,
 167     PVOID Buffer,
 168     ULONG Size
 169 );
 170
 171 typedef
 172 VOID
 173 (NTAPI *FAST486_MEM_WRITE_PROC)
 174 (
 175     PFAST486_STATE State,
 176     ULONG Address,
 177     PVOID Buffer,
 178     ULONG Size
 179 );
 180
 181 typedef
 182 VOID
 183 (NTAPI *FAST486_IO_READ_PROC)
 184 (
 185     PFAST486_STATE State,
 186     ULONG Port,
 187     PVOID Buffer,
 188     ULONG Size
 189 );
 190
 191 typedef
 192 VOID
 193 (NTAPI *FAST486_IO_WRITE_PROC)
 194 (
 195     PFAST486_STATE State,
 196     ULONG Port,
 197     PVOID Buffer,
 198     ULONG Size
 199 );
 200
 201 typedef
 202 VOID
 203 (NTAPI *FAST486_IDLE_PROC)
 204 (
 205     PFAST486_STATE State
 206 );
 207
 208 typedef
 209 VOID
 210 (NTAPI *FAST486_BOP_PROC)
 211 (
 212     PFAST486_STATE State,
 213     USHORT BopCode
 214 );
 215
 216 typedef
 217 UCHAR
 218 (NTAPI *FAST486_INT_ACK_PROC)
 219 (
 220     PFAST486_STATE State
 221 );
 222
 223 typedef union _FAST486_REG
 224 {
 225     union
 226     {
 227         struct
 228         {
 229             UCHAR LowByte;
 230             UCHAR HighByte;
 231         };
 232         USHORT LowWord;
 233     };
 234     ULONG Long;
 235 } FAST486_REG, *PFAST486_REG;
 236
 237 typedef struct _FAST486_SEG_REG
 238 {
 239     USHORT Selector;
 240
 241     /* Descriptor cache */
 242     ULONG Accessed      : 1;
 243     ULONG ReadWrite     : 1;
 244     ULONG DirConf       : 1;
 245     ULONG Executable    : 1;
 246     ULONG SystemType    : 1;
 247     ULONG Dpl           : 2;
 248     ULONG Present       : 1;
 249     ULONG Size          : 1;
 250     ULONG Limit;
 251     ULONG Base;
 252 } FAST486_SEG_REG, *PFAST486_SEG_REG;
 253
 254 typedef struct
 255 {
 256     ULONG Limit         : 16;
 257     ULONG Base          : 24;
 258     ULONG Accessed      : 1;
 259     ULONG ReadWrite     : 1;
 260     ULONG DirConf       : 1;
 261     ULONG Executable    : 1;
 262     ULONG SystemType    : 1;
 263     ULONG Dpl           : 2;
 264     ULONG Present       : 1;
 265     ULONG LimitHigh     : 4;
 266     ULONG Avl           : 1;
 267     ULONG Reserved      : 1;
 268     ULONG Size          : 1;
 269     ULONG Granularity   : 1;
 270     ULONG BaseHigh      : 8;
 271 } FAST486_GDT_ENTRY, *PFAST486_GDT_ENTRY;
 272
 273 typedef struct
 274 {
 275     ULONG Offset : 16;
 276     ULONG Selector : 16;
 277     ULONG ParamCount : 5;
 278     ULONG Reserved : 3;
 279     ULONG Type : 4;
 280     ULONG SystemType : 1;
 281     ULONG Dpl : 2;
 282     ULONG Present : 1;
 283     ULONG OffsetHigh : 16;
 284 } FAST486_CALL_GATE, *PFAST486_CALL_GATE;
 285
 286 typedef struct
 287 {
 288     ULONG Offset        : 16;
 289     ULONG Selector      : 16;
 290     ULONG Zero          : 8;
 291     ULONG Type          : 4;
 292     ULONG Storage       : 1;
 293     ULONG Dpl           : 2;
 294     ULONG Present       : 1;
 295     ULONG OffsetHigh    : 16;
 296 } FAST486_IDT_ENTRY, *PFAST486_IDT_ENTRY;
 297
 298 typedef struct _FAST486_TABLE_REG
 299 {
 300     USHORT Size;
 301     ULONG Address;
 302 } FAST486_TABLE_REG, *PFAST486_TABLE_REG;
 303
 304 typedef union _FAST486_FLAGS_REG
 305 {
 306     USHORT LowWord;
 307     ULONG Long;
 308
 309     struct
 310     {
 311         ULONG Cf        : 1;
 312         ULONG AlwaysSet : 1;
 313         ULONG Pf        : 1;
 314         ULONG Reserved0 : 1;
 315         ULONG Af        : 1;
 316         ULONG Reserved1 : 1;
 317         ULONG Zf        : 1;
 318         ULONG Sf        : 1;
 319         ULONG Tf        : 1;
 320         ULONG If        : 1;
 321         ULONG Df        : 1;
 322         ULONG Of        : 1;
 323         ULONG Iopl      : 2;
 324         ULONG Nt        : 1;
 325         ULONG Reserved2 : 1;
 326         ULONG Rf        : 1;
 327         ULONG Vm        : 1;
 328         ULONG Ac        : 1;
 329         ULONG Vif       : 1;
 330         ULONG Vip       : 1;
 331         ULONG Id        : 1;
 332
 333         // ULONG Reserved : 10;
 334     };
 335 } FAST486_FLAGS_REG, *PFAST486_FLAGS_REG;
 336
 337 typedef struct _FAST486_TSS
 338 {
 339     ULONG Link;
 340     ULONG Esp0;
 341     ULONG Ss0;
 342     ULONG Esp1;
 343     ULONG Ss1;
 344     ULONG Esp2;
 345     ULONG Ss2;
 346     ULONG Cr3;
 347     ULONG Eip;
 348     ULONG Eflags;
 349     ULONG Eax;
 350     ULONG Ecx;
 351     ULONG Edx;
 352     ULONG Ebx;
 353     ULONG Esp;
 354     ULONG Ebp;
 355     ULONG Esi;
 356     ULONG Edi;
 357     ULONG Es;
 358     ULONG Cs;
 359     ULONG Ss;
 360     ULONG Ds;
 361     ULONG Fs;
 362     ULONG Gs;
 363     ULONG Ldtr;
 364     ULONG IopbOffset;
 365 } FAST486_TSS, *PFAST486_TSS;
 366
 367 struct _FAST486_STATE
 368 {
 369     FAST486_MEM_READ_PROC MemReadCallback;
 370     FAST486_MEM_WRITE_PROC MemWriteCallback;
 371     FAST486_IO_READ_PROC IoReadCallback;
 372     FAST486_IO_WRITE_PROC IoWriteCallback;
 373     FAST486_IDLE_PROC IdleCallback;
 374     FAST486_BOP_PROC BopCallback;
 375     FAST486_INT_ACK_PROC IntAckCallback;
 376     FAST486_REG GeneralRegs[FAST486_NUM_GEN_REGS];
 377     FAST486_SEG_REG SegmentRegs[FAST486_NUM_SEG_REGS];
 378     FAST486_REG InstPtr, SavedInstPtr;
 379     FAST486_FLAGS_REG Flags;
 380     FAST486_TABLE_REG Gdtr, Idtr, Ldtr, Tss;
 381     ULONG ControlRegisters[FAST486_NUM_CTRL_REGS];
 382     ULONG DebugRegisters[FAST486_NUM_DBG_REGS];
 383     ULONG ExceptionCount;
 384     ULONG PrefixFlags;
 385     FAST486_SEG_REGS SegmentOverride;
 386     FAST486_INT_STATUS IntStatus;
 387     UCHAR PendingIntNum;
 388 };
 389
 390 /* FUNCTIONS ******************************************************************/
 391
 392 VOID
 393 NTAPI
 394 Fast486Continue(PFAST486_STATE State);
 395
 396 VOID
 397 NTAPI
 398 Fast486StepInto(PFAST486_STATE State);
 399
 400 VOID
 401 NTAPI
 402 Fast486StepOver(PFAST486_STATE State);
 403
 404 VOID
 405 NTAPI
 406 Fast486StepOut(PFAST486_STATE State);
 407
 408 VOID
 409 NTAPI
 410 Fast486DumpState(PFAST486_STATE State);
 411
 412 VOID
 413 NTAPI
 414 Fast486Reset(PFAST486_STATE State);
 415
 416 VOID
 417 NTAPI
 418 Fast486Interrupt(PFAST486_STATE State, UCHAR Number);
 419
 420 VOID
 421 NTAPI
 422 Fast486InterruptSignal(PFAST486_STATE State);
 423
 424 VOID
 425 NTAPI
 426 Fast486ExecuteAt(PFAST486_STATE State, USHORT Segment, ULONG Offset);
 427
 428 VOID
 429 NTAPI
 430 Fast486SetStack(PFAST486_STATE State, USHORT Segment, ULONG Offset);
 431
 432 VOID
 433 NTAPI
 434 Fast486SetSegment
 435 (
 436     PFAST486_STATE State,
 437     FAST486_SEG_REGS Segment,
 438     USHORT Selector
 439 );
 440
 441 #endif // _FAST486_H_
 442
 443 /* EOF */