2 * Soft386 386/486 CPU Emulation Library
5 * Copyright (C) 2013 Aleksandar Andrejevic <theflash AT sdf DOT lonestar DOT org>
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.
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.
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.
25 /* DEFINES ********************************************************************/
27 #define SOFT386_NUM_GEN_REGS 8
28 #define SOFT386_NUM_SEG_REGS 6
29 #define SOFT386_NUM_CTRL_REGS 8
30 #define SOFT386_NUM_DBG_REGS 8
32 #define SOFT386_CR0_PE (1 << 0)
33 #define SOFT386_CR0_MP (1 << 1)
34 #define SOFT386_CR0_EM (1 << 2)
35 #define SOFT386_CR0_TS (1 << 3)
36 #define SOFT386_CR0_ET (1 << 4)
37 #define SOFT386_CR0_NE (1 << 5)
38 #define SOFT386_CR0_WP (1 << 16)
39 #define SOFT386_CR0_AM (1 << 18)
40 #define SOFT386_CR0_NW (1 << 29)
41 #define SOFT386_CR0_CD (1 << 30)
42 #define SOFT386_CR0_PG (1 << 31)
44 #define SOFT386_IDT_TASK_GATE 0x5
45 #define SOFT386_IDT_INT_GATE 0x6
46 #define SOFT386_IDT_TRAP_GATE 0x7
47 #define SOFT386_IDT_INT_GATE_32 0xE
48 #define SOFT386_IDT_TRAP_GATE_32 0xF
50 #define SOFT386_PREFIX_SEG (1 << 0)
51 #define SOFT386_PREFIX_OPSIZE (1 << 1)
52 #define SOFT386_PREFIX_ADSIZE (1 << 2)
53 #define SOFT386_PREFIX_LOCK (1 << 3)
54 #define SOFT386_PREFIX_REPNZ (1 << 4)
55 #define SOFT386_PREFIX_REP (1 << 5)
57 struct _SOFT386_STATE
;
58 typedef struct _SOFT386_STATE SOFT386_STATE
, *PSOFT386_STATE
;
60 typedef enum _SOFT386_GEN_REGS
70 } SOFT386_GEN_REGS
, *PSOFT386_GEN_REGS
;
72 typedef enum _SOFT386_SEG_REGS
80 } SOFT386_SEG_REGS
, *PSOFT386_SEG_REGS
;
82 typedef enum _SOFT386_CTRL_REGS
92 } SOFT386_CTRL_REGS
, *PSOFT386_CTRL_REGS
;
94 typedef enum _SOFT386_DBG_REGS
104 } SOFT386_DBG_REGS
, *PSOFT386_DBG_REGS
;
106 typedef enum _SOFT386_EXCEPTIONS
108 SOFT386_EXCEPTION_DE
= 0x00,
109 SOFT386_EXCEPTION_DB
= 0x01,
110 SOFT386_EXCEPTION_BP
= 0x03,
111 SOFT386_EXCEPTION_OF
= 0x04,
112 SOFT386_EXCEPTION_BR
= 0x05,
113 SOFT386_EXCEPTION_UD
= 0x06,
114 SOFT386_EXCEPTION_NM
= 0x07,
115 SOFT386_EXCEPTION_DF
= 0x08,
116 SOFT386_EXCEPTION_TS
= 0x0A,
117 SOFT386_EXCEPTION_NP
= 0x0B,
118 SOFT386_EXCEPTION_SS
= 0x0C,
119 SOFT386_EXCEPTION_GP
= 0x0D,
120 SOFT386_EXCEPTION_PF
= 0x0E,
121 SOFT386_EXCEPTION_MF
= 0x10,
122 SOFT386_EXCEPTION_AC
= 0x11,
123 SOFT386_EXCEPTION_MC
= 0x12
124 } SOFT386_EXCEPTIONS
, *PSOFT386_EXCEPTIONS
;
128 (NTAPI
*SOFT386_MEM_READ_PROC
)
130 PSOFT386_STATE State
,
138 (NTAPI
*SOFT386_MEM_WRITE_PROC
)
140 PSOFT386_STATE State
,
148 (NTAPI
*SOFT386_IO_READ_PROC
)
150 PSOFT386_STATE State
,
158 (NTAPI
*SOFT386_IO_WRITE_PROC
)
160 PSOFT386_STATE State
,
168 (NTAPI
*SOFT386_IDLE_PROC
)
175 (NTAPI
*SOFT386_BOP_PROC
)
177 PSOFT386_STATE State
,
181 typedef union _SOFT386_REG
193 } SOFT386_REG
, *PSOFT386_REG
;
195 typedef struct _SOFT386_SEG_REG
199 /* Descriptor cache */
203 ULONG Executable
: 1;
204 ULONG SystemType
: 1;
210 } SOFT386_SEG_REG
, *PSOFT386_SEG_REG
;
219 ULONG Executable
: 1;
220 ULONG SystemType
: 1;
227 ULONG Granularity
: 1;
229 } SOFT386_GDT_ENTRY
, *PSOFT386_GDT_ENTRY
;
240 ULONG OffsetHigh
: 16;
241 } SOFT386_IDT_ENTRY
, *PSOFT386_IDT_ENTRY
;
243 typedef struct _SOFT386_TABLE_REG
247 } SOFT386_TABLE_REG
, *PSOFT386_TABLE_REG
;
249 typedef union _SOFT386_FLAGS_REG
278 // ULONG Reserved : 10;
280 } SOFT386_FLAGS_REG
, *PSOFT386_FLAGS_REG
;
282 typedef struct _SOFT386_TSS
310 } SOFT386_TSS
, *PSOFT386_TSS
;
312 struct _SOFT386_STATE
314 SOFT386_MEM_READ_PROC MemReadCallback
;
315 SOFT386_MEM_WRITE_PROC MemWriteCallback
;
316 SOFT386_IO_READ_PROC IoReadCallback
;
317 SOFT386_IO_WRITE_PROC IoWriteCallback
;
318 SOFT386_IDLE_PROC IdleCallback
;
319 SOFT386_BOP_PROC BopCallback
;
320 SOFT386_REG GeneralRegs
[SOFT386_NUM_GEN_REGS
];
321 SOFT386_SEG_REG SegmentRegs
[SOFT386_NUM_SEG_REGS
];
322 SOFT386_REG InstPtr
, SavedInstPtr
;
323 SOFT386_FLAGS_REG Flags
;
324 SOFT386_TABLE_REG Gdtr
, Idtr
, Ldtr
, Tss
;
325 ULONGLONG TimeStampCounter
;
326 ULONG ControlRegisters
[SOFT386_NUM_CTRL_REGS
];
327 ULONG DebugRegisters
[SOFT386_NUM_DBG_REGS
];
328 ULONG ExceptionCount
;
330 SOFT386_SEG_REGS SegmentOverride
;
334 /* FUNCTIONS ******************************************************************/
338 Soft386Continue(PSOFT386_STATE State
);
342 Soft386StepInto(PSOFT386_STATE State
);
346 Soft386StepOver(PSOFT386_STATE State
);
350 Soft386StepOut(PSOFT386_STATE State
);
354 Soft386DumpState(PSOFT386_STATE State
);
358 Soft386Reset(PSOFT386_STATE State
);
362 Soft386Interrupt(PSOFT386_STATE State
, UCHAR Number
);
366 Soft386ExecuteAt(PSOFT386_STATE State
, USHORT Segment
, ULONG Offset
);
370 Soft386SetStack(PSOFT386_STATE State
, USHORT Segment
, ULONG Offset
);
376 PSOFT386_STATE State
,
377 SOFT386_SEG_REGS Segment
,
381 #endif // _SOFT386_H_