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
|
/* ScummVM - Graphic Adventure Engine
*
* ScummVM is the legal property of its developers, whose names
* are too numerous to list here. Please refer to the COPYRIGHT
* file distributed with this source distribution.
*
* 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.
*
* $URL$
* $Id$
*
*/
#ifndef SCI_ENGINE_VM_TYPES_H
#define SCI_ENGINE_VM_TYPES_H
#include "common/scummsys.h"
namespace Sci {
// Segment ID type
typedef int SegmentId;
struct reg_t {
uint16 segment;
uint16 offset;
};
#define PREG "%04x:%04x"
#define PRINT_REG(r) (0xffff) & (unsigned) (r).segment, (unsigned) (r).offset
// Stack pointer type
typedef reg_t *StackPtr;
// Selector ID
typedef int Selector;
#define NULL_SELECTOR -1
#define PSTK "ST:%04x"
#define PRINT_STK(v) (unsigned) (v - s->stack_base)
static inline reg_t make_reg(int segment, int offset) {
reg_t r;
r.offset = offset;
r.segment = segment;
return r;
}
#define IS_NULL_REG(r) (!((r).offset || (r).segment))
#define REG_EQ(a, b) (((a).offset == (b).offset) && ((a).segment == (b).segment))
#define NULL_REG_INITIALIZER {0, 0}
extern reg_t NULL_REG;
} // End of namespace Sci
#endif // SCI_ENGINE_VM_TYPES_H
|