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
|
/*
* Copyright (C) 2002-2021 The DOSBox Team
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#ifndef DOSBOX_CALLBACK_H
#define DOSBOX_CALLBACK_H
#include "mem.h"
typedef Bitu (*CallBack_Handler)(void);
extern CallBack_Handler CallBack_Handlers[];
enum { CB_RETN,CB_RETF,CB_RETF8,CB_IRET,CB_IRETD,CB_IRET_STI,CB_IRET_EOI_PIC1,
CB_IRQ0,CB_IRQ1,CB_IRQ1_BREAK,CB_IRQ9,CB_IRQ12,CB_IRQ12_RET,CB_MOUSE,
CB_INT28,CB_INT29,CB_INT16,CB_HOOKABLE,CB_TDE_IRET,CB_IPXESR,CB_IPXESR_RET,
CB_INT21,CB_INT13,CB_VESA_WAIT,CB_VESA_PM,CB_IRET_EOI_PIC2,CB_CPM,
CB_RETF_STI,CB_RETF_CLI,CB_INT6F_ATOK};
/* NTS: Cannot make runtime configurable, because CB_MAX is used to define an array */
#define CB_MAX 128U
#define CB_SIZE 32U
/* we can make THESE configurable though! */
//#define CB_SEG 0xF000
//#define CB_SOFFSET 0x1000
extern uint16_t CB_SEG,CB_SOFFSET;
enum {
CBRET_NONE=0,CBRET_STOP=1
};
extern uint8_t lastint;
static INLINE RealPt CALLBACK_RealPointer(Bitu callback) {
return RealMake(CB_SEG,(uint16_t)(CB_SOFFSET+callback*CB_SIZE));
}
static INLINE PhysPt CALLBACK_PhysPointer(Bitu callback) {
return PhysMake(CB_SEG,(uint16_t)(CB_SOFFSET+callback*CB_SIZE));
}
static inline PhysPt CALLBACK_GetBase(void) {
return (PhysPt)(((PhysPt)CB_SEG << (PhysPt)4U) + (PhysPt)CB_SOFFSET);
}
uint8_t CALLBACK_Allocate();
void CALLBACK_Idle(void);
void CALLBACK_RunRealInt(uint8_t intnum);
void CALLBACK_RunRealFar(uint16_t seg,uint16_t off);
void CALLBACK_RunRealFarInt(uint16_t seg,uint16_t off);
bool CALLBACK_Setup(Bitu callback,CallBack_Handler handler,Bitu type,const char* descr);
Bitu CALLBACK_Setup(Bitu callback,CallBack_Handler handler,Bitu type,PhysPt addr,const char* descr);
void CALLBACK_SetDescription(Bitu nr, const char* descr);
const char* CALLBACK_GetDescription(Bitu nr);
void CALLBACK_SCF(bool val);
void CALLBACK_SZF(bool val);
void CALLBACK_SIF(bool val);
extern Bitu call_priv_io;
class CALLBACK_HandlerObject{
private:
bool installed = false;
Bitu m_callback = 0; // NULL
enum {NONE,SETUP,SETUPAT} m_type = NONE;
struct {
RealPt old_vector;
uint8_t interrupt;
bool installed;
} vectorhandler;
public:
CALLBACK_HandlerObject() {
vectorhandler.installed=false;
}
~CALLBACK_HandlerObject();
//Install and allocate a callback.
void Install(CallBack_Handler handler,Bitu type,const char* description);
void Install(CallBack_Handler handler,Bitu type,PhysPt addr,const char* description);
void Uninstall();
//Only allocate a callback number
void Allocate(CallBack_Handler handler,const char* description=nullptr);
uint16_t Get_callback() {
return (uint16_t)m_callback;
}
RealPt Get_RealPointer() {
return CALLBACK_RealPointer(m_callback);
}
void Set_RealVec(uint8_t vec,bool reinstall=false);
};
#endif
|
