1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
|
#include <nt.h>
#include <ntrtl.h>
#include <nturtl.h>
#include <windows.h>
#include <vdm.h>
#include "insignia.h"
#include "host_def.h"
#include "wchar.h"
#include "stdio.h"
#include "ntstatus.h"
#include <ntddvdeo.h>
#include "nt_fulsc.h"
#include "nt_det.h"
#include "nt_thred.h"
#include "nt_eoi.h"
#include "host_rrr.h"
#include "nt_uis.h"
/*
* ==========================================================================
* Name: nt_sec.c
* Author: Jerry Sexton
* Derived From:
* Created On: 5th February 1992
* Purpose: This module contains the function CreateVideoSection
* which creates and maps a section which is used to
* save and restore video hardware data. It can't be in
* nt_fulsc.c because files that include nt.h can't
* include windows.h as well.
*
* (c)Copyright Insignia Solutions Ltd., 1992. All rights reserved.
*
* 03-May-1994 Jonle
* videosection creation has been moved to consrv for security
* removed all dead code associated with section maintenance
*
* ==========================================================================
*/
IMPORT int DisplayErrorTerm(int, DWORD, char *, int);
/***************************************************************************
* Function: *
* LoseRegenMemory *
* *
* Description: *
* Lose the memory that will be remapped as vga regen. NOTE: need to *
* make this 'if fullscreen' only. *
* *
* Parameters: *
* None. *
* *
* Return value: *
* VOID *
* *
***************************************************************************/
GLOBAL VOID LoseRegenMemory(VOID)
{
int a = 0xa0000;
ULONG len = 0x20000;
NTSTATUS status;
status = NtFreeVirtualMemory(
(HANDLE)GetCurrentProcess(),
(PVOID *)&a,
&len,
MEM_RELEASE);
if (!NT_SUCCESS(status))
DisplayErrorTerm(EHS_FUNC_FAILED,status,__FILE__,__LINE__);
}
/***************************************************************************
* Function: *
* RegainRegenMemory *
* *
* Description: *
* When we switch back from fullscreen to windowed, the real regen *
* memory is removed and we are left with a gap. We have to put some *
* memory back into that gap before continuing windowed. *
* *
* Parameters: *
* None. *
* *
* Return value: *
* VOID *
* *
***************************************************************************/
GLOBAL VOID RegainRegenMemory(VOID)
{
int regen = 0xa0000;
ULONG len = 0x20000;
HANDLE processHandle;
NTSTATUS status;
if (!(processHandle = NtCurrentProcess()))
DisplayErrorTerm(EHS_FUNC_FAILED,(DWORD)processHandle,__FILE__,__LINE__);
status = NtAllocateVirtualMemory(
processHandle,
(PVOID *) ®en,
0,
&len,
MEM_COMMIT | MEM_RESERVE,
PAGE_EXECUTE_READWRITE);
if (! NT_SUCCESS(status) )
DisplayErrorTerm(EHS_FUNC_FAILED,status,__FILE__,__LINE__);
}
#ifdef X86GFX
extern RTL_CRITICAL_SECTION IcaLock;
extern HANDLE hWowIdleEvent;
/*****************************************************************************
* Function: *
* GetROMsMapped *
* *
* Description: *
* Calls NT to get the ROMS of the host machine mapped into place in *
* emulated memory. The bottom page (4k) of PC memory is copied into *
* the bottom of emulated memory to provide the correct IVT & bios data *
* area setup for the mapped bios. (Which will have been initialised). *
* *
* Parameters: *
* None *
* *
* Return Value: *
* None - fails internally on NT error. *
* *
*****************************************************************************/
GLOBAL VOID GetROMsMapped(VOID)
{
NTSTATUS status;
VDMICAUSERDATA IcaUserData;
IcaUserData.pIcaLock = &IcaLock;
IcaUserData.pIcaMaster = &VirtualIca[0];
IcaUserData.pIcaSlave = &VirtualIca[1];
IcaUserData.pDelayIrq = &DelayIrqLine;
IcaUserData.pUndelayIrq = &UndelayIrqLine;
IcaUserData.pDelayIret = &iretHookActive;
IcaUserData.pIretHooked = &iretHookMask;
IcaUserData.pAddrIretBopTable = &AddrIretBopTable;
IcaUserData.phWowIdleEvent = &hWowIdleEvent;
status = NtVdmControl(VdmInitialize, &IcaUserData);
if (!NT_SUCCESS(status))
DisplayErrorTerm(EHS_FUNC_FAILED,status,__FILE__,__LINE__);
}
#endif //X86GFX
|
