ReactOS 0.4.15-dev-8339-g4028de8
int32.c
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1/*
2 * COPYRIGHT: GPL - See COPYING in the top level directory
3 * PROJECT: ReactOS Virtual DOS Machine
4 * FILE: subsystems/mvdm/ntvdm/int32.c
5 * PURPOSE: 32-bit Interrupt Handlers
6 * PROGRAMMERS: Aleksandar Andrejevic <theflash AT sdf DOT lonestar DOT org>
7 * Hermes Belusca-Maito (hermes.belusca@sfr.fr)
8 */
9
10/* INCLUDES *******************************************************************/
11
12#include "ntvdm.h"
13
14#define NDEBUG
15#include <debug.h>
16
17#include "emulator.h"
18#include "int32.h"
19
20#include "cpu/bop.h"
21#include <isvbop.h>
22
23/* PRIVATE VARIABLES **********************************************************/
24
25/*
26 * This is the list of registered 32-bit Interrupt handlers.
27 */
29
30/* BOP Identifiers */
31#define BOP_CONTROL 0xFF // Control BOP Handler
32 #define BOP_CONTROL_DEFFUNC 0x00 // Default Control BOP Function
33 #define BOP_CONTROL_INT32 0xFF // 32-bit Interrupt dispatcher
34
35#define INT16_TRAMPOLINE_SIZE sizeof(ULONGLONG) // == TRAMPOLINE_SIZE
36
37/* 16-bit generic interrupt code for calling a 32-bit interrupt handler */
38static BYTE Int16To32[] =
39{
40 0xFA, // cli
41
42 /* Push the value of the interrupt to be called */
43 0x6A, 0xFF, // push i (patchable to 0x6A, 0xIntNum)
44
45 0xF8, // clc
46
47 /* The BOP Sequence */
48// BOP_SEQ:
49 BOP(BOP_CONTROL), // Control BOP
50 BOP_CONTROL_INT32, // 32-bit Interrupt dispatcher
51
52 0x73, 0x04, // jnc EXIT (offset +4)
53
54 0xFB, // sti
55
56 0xF4, // hlt
57
58 0xEB, 0xF6, // jmp BOP_SEQ (offset -10)
59
60// EXIT:
61 0x44, 0x44, // inc sp, inc sp
62 0xCF, // iret
63};
65
66/* PUBLIC FUNCTIONS ***********************************************************/
67
69{
70 /* Get the interrupt number */
71 BYTE IntNum = LOBYTE(Stack[STACK_INT_NUM]);
72
73 /* Call the 32-bit Interrupt handler */
74 if (Int32Proc[IntNum] != NULL)
75 Int32Proc[IntNum](Stack);
76 else
77 DPRINT1("Unhandled 32-bit interrupt: 0x%02X, AX = 0x%04X\n", IntNum, getAX());
78}
79
81{
82 /* Get the Function Number and skip it */
83 BYTE FuncNum = *(PBYTE)SEG_OFF_TO_PTR(getCS(), getIP());
84 setIP(getIP() + 1);
85
86 switch (FuncNum)
87 {
90 break;
91
92 default:
93 // DPRINT1("Unassigned Control BOP Function: 0x%02X\n", FuncNum);
94 DisplayMessage(L"Unassigned Control BOP Function: 0x%02X", FuncNum);
95 break;
96 }
97}
98
101 IN BYTE IntNumber,
102 IN LPBYTE CallbackCode,
103 IN SIZE_T CallbackSize,
104 OUT PSIZE_T CodeSize OPTIONAL)
105{
106 /* Get a pointer to the IVT and set the corresponding entry (far pointer) */
107 LPDWORD IntVecTable = (LPDWORD)SEG_OFF_TO_PTR(0x0000, 0x0000);
108 IntVecTable[IntNumber] = FarPtr;
109
110 /* Register the 16-bit callback */
111 return RegisterCallback16(FarPtr,
112 CallbackCode,
113 CallbackSize,
114 CodeSize);
115}
116
117ULONG
119 IN BYTE IntNumber,
120 IN EMULATOR_INT32_PROC IntHandler,
121 OUT PSIZE_T CodeSize OPTIONAL)
122{
123 /* Array for holding our copy of the 16-bit interrupt callback */
124 BYTE IntCallback[sizeof(Int16To32)/sizeof(BYTE)];
125
126 /* Check whether the 32-bit interrupt was already registered */
127#if 0
128 if (Int32Proc[IntNumber] != NULL)
129 {
130 DPRINT1("RegisterInt32: Interrupt 0x%02X already registered!\n", IntNumber);
131 return 0;
132 }
133#endif
134
135 /* Register the 32-bit interrupt handler */
136 Int32Proc[IntNumber] = IntHandler;
137
138 /* Copy the generic 16-bit interrupt callback and patch it */
139 RtlCopyMemory(IntCallback, Int16To32, sizeof(Int16To32));
140 IntCallback[2] = IntNumber;
141
142 /* Register the 16-bit interrupt callback */
143 return RegisterInt16(FarPtr,
144 IntNumber,
145 IntCallback,
146 sizeof(IntCallback),
147 CodeSize);
148}
149
150VOID
152 IN BYTE IntNumber)
153{
154 /*
155 * TODO: This function has almost the same code as RunCallback16.
156 * Something that may be nice is to have a common interface to
157 * build the trampoline...
158 */
159
160 PUCHAR TrampolineBase = (PUCHAR)FAR_POINTER(Context->TrampolineFarPtr);
161 PUCHAR Trampoline = TrampolineBase;
162 UCHAR OldTrampoline[INT16_TRAMPOLINE_SIZE];
163
164 DPRINT("Int32Call(0x%02X)\n", IntNumber);
165
166 ASSERT(Context->TrampolineSize == INT16_TRAMPOLINE_SIZE);
167
168 /* Save the old trampoline */
169 ((PULONGLONG)&OldTrampoline)[0] = ((PULONGLONG)TrampolineBase)[0];
170
171 /* Build the generic entry-point for 16-bit calls */
172 if (IntNumber == 0x03)
173 {
174 /* We are redefining for INT 03h */
175 *Trampoline++ = 0xCC; // Call INT 03h
177 }
178 else
179 {
180 /* Normal interrupt */
181 *Trampoline++ = 0xCD; // Call INT XXh
182 *Trampoline++ = IntNumber;
183 }
184 UnSimulate16(Trampoline);
185
186 /* Perform the call */
187 Call16(HIWORD(Context->TrampolineFarPtr),
188 LOWORD(Context->TrampolineFarPtr));
189
190 /* Restore the old trampoline */
191 ((PULONGLONG)TrampolineBase)[0] = ((PULONGLONG)&OldTrampoline)[0];
192}
193
195{
196 /* Register the Control BOP */
198}
199
200/* EOF */
#define DPRINT1
Definition: precomp.h:8
VOID RegisterBop(BYTE BopCode, EMULATOR_BOP_PROC BopHandler)
Definition: bop.c:29
#define NULL
Definition: types.h:112
#define FAR_POINTER(x)
Definition: emulator.h:35
#define SEG_OFF_TO_PTR(seg, off)
Definition: emulator.h:32
#define BOP_CONTROL
Definition: int32.c:31
static VOID WINAPI Int32Dispatch(LPWORD Stack)
Definition: int32.c:68
static EMULATOR_INT32_PROC Int32Proc[EMULATOR_MAX_INT32_NUM]
Definition: int32.c:28
ULONG RegisterInt32(IN ULONG FarPtr, IN BYTE IntNumber, IN EMULATOR_INT32_PROC IntHandler, OUT PSIZE_T CodeSize OPTIONAL)
Definition: int32.c:118
static BYTE Int16To32[]
Definition: int32.c:38
VOID InitializeInt32(VOID)
Definition: int32.c:194
ULONG RegisterInt16(IN ULONG FarPtr, IN BYTE IntNumber, IN LPBYTE CallbackCode, IN SIZE_T CallbackSize, OUT PSIZE_T CodeSize OPTIONAL)
Definition: int32.c:100
static VOID WINAPI ControlBop(LPWORD Stack)
Definition: int32.c:80
VOID Int32Call(IN PCALLBACK16 Context, IN BYTE IntNumber)
Definition: int32.c:151
#define INT16_TRAMPOLINE_SIZE
Definition: int32.c:35
#define BOP_CONTROL_INT32
Definition: int32.c:33
#define EMULATOR_MAX_INT32_NUM
Definition: int32.h:20
#define Int16To32StubSize
Definition: int32.h:38
VOID(WINAPI * EMULATOR_INT32_PROC)(LPWORD Stack)
Definition: int32.h:42
#define STACK_INT_NUM
Definition: int32.h:30
#define C_ASSERT(e)
Definition: intsafe.h:73
#define LOBYTE(W)
Definition: jmemdos.c:487
#define ASSERT(a)
Definition: mode.c:44
#define LPDWORD
Definition: nt_native.h:46
__GNU_EXTENSION typedef unsigned __int64 * PULONGLONG
Definition: ntbasedef.h:383
#define L(x)
Definition: ntvdm.h:50
#define LOWORD(l)
Definition: pedump.c:82
BYTE * PBYTE
Definition: pedump.c:66
void DisplayMessage(BOOL bConsole, BOOL bSilent, LPCTSTR lpMessage, LPCTSTR lpTitle, UINT uType)
Definition: regsvr32.c:239
#define DPRINT
Definition: sndvol32.h:73
PULONG MinorVersion OPTIONAL
Definition: CrossNt.h:68
ULONG RegisterCallback16(IN ULONG FarPtr, IN LPBYTE CallbackCode, IN SIZE_T CallbackSize, OUT PSIZE_T CodeSize OPTIONAL)
Definition: callback.c:120
VOID Call16(IN USHORT Segment, IN USHORT Offset)
Definition: callback.c:71
#define UnSimulate16(trap)
Definition: callback.h:16
#define BOP(num)
Definition: callback.h:15
ULONG_PTR * PSIZE_T
Definition: typedefs.h:80
unsigned char * LPBYTE
Definition: typedefs.h:53
uint16_t * LPWORD
Definition: typedefs.h:56
ULONG_PTR SIZE_T
Definition: typedefs.h:80
uint32_t * LPDWORD
Definition: typedefs.h:59
#define RtlCopyMemory(Destination, Source, Length)
Definition: typedefs.h:263
#define IN
Definition: typedefs.h:39
unsigned char * PUCHAR
Definition: typedefs.h:53
uint32_t ULONG
Definition: typedefs.h:59
#define HIWORD(l)
Definition: typedefs.h:247
#define OUT
Definition: typedefs.h:40
USHORT WINAPI getIP(VOID)
Definition: registers.c:464
USHORT WINAPI getAX(VOID)
Definition: registers.c:114
USHORT WINAPI getCS(VOID)
Definition: registers.c:480
VOID WINAPI setIP(USHORT)
Definition: registers.c:471
_In_ WDFREQUEST _In_ PIO_STACK_LOCATION Stack
Definition: wdfrequest.h:639
#define WINAPI
Definition: msvc.h:6
unsigned char UCHAR
Definition: xmlstorage.h:181
unsigned char BYTE
Definition: xxhash.c:193