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
|
#ifndef QTMIPSEXCEPTION_H
#define QTMIPSEXCEPTION_H
#include <exception>
#include <qstring.h>
#define QTMIPS_EXCEPTION(TYPE, REASON, EXT) (QtMipsException ## TYPE (QString(REASON), QString(EXT), QString(__FILE__), __LINE__))
#define QTMIPS_ARGS_COMMON QString reason, QString ext, QString file, int line
// Base exception for all machine ones
class QtMipsException : public std::exception {
public:
QtMipsException(QTMIPS_ARGS_COMMON);
const char *what() const throw();
QString msg(bool pos) const;
protected:
QString reason, ext, file;
int line;
};
// Exception durring input loading
class QtMipsExceptionInput : public QtMipsException {
public:
QtMipsExceptionInput(QTMIPS_ARGS_COMMON);
};
// Exceptions caused by machine invalid input or unsupported action
class QtMipsExceptionRuntime : public QtMipsException {
public:
QtMipsExceptionRuntime(QTMIPS_ARGS_COMMON);
};
// Decoded instruction is not supported.
// This can be cause by really using some unimplemented instruction or because of problems in instruction decode.
class QtMipsExceptionUnsupportedInstruction : public QtMipsExceptionRuntime {
public:
QtMipsExceptionUnsupportedInstruction(QTMIPS_ARGS_COMMON);
};
// Decoded ALU operation is not supported
// This is basically same exception as QtMipsExceptionUnsupportedInstruction but it is emmited from ALU when executed and not before that.
class QtMipsExceptionUnsupportedAluOperation : public QtMipsExceptionRuntime {
public:
QtMipsExceptionUnsupportedAluOperation(QTMIPS_ARGS_COMMON);
};
// Integer operation resulted to overflow (or underflow as we are working with unsigned values)
// This is for sure caused by program it self.
class QtMipsExceptionOverflow : public QtMipsExceptionRuntime {
public:
QtMipsExceptionOverflow(QTMIPS_ARGS_COMMON);
};
// Instruction is jumping to unaligned address (ADDR%4!=0)
// This can be caused by bug or by user program as it can be jumping relative to register
// This shouldn't be happening with non-register jumps as those should be verified by compiler
class QtMipsExceptionUnalignedJump : public QtMipsExceptionRuntime {
public:
QtMipsExceptionUnalignedJump(QTMIPS_ARGS_COMMON);
};
// Trying to access address outside of the memory
// As we are simulating whole 32bit memory address space then this is most probably QtMips bug if raised not program.
class QtMipsExceptionOutOfMemoryAccess : public QtMipsExceptionRuntime {
public:
QtMipsExceptionOutOfMemoryAccess(QTMIPS_ARGS_COMMON);
};
// This is sanity check exception
class QtMipsExceptionSanity : public QtMipsException {
public:
QtMipsExceptionSanity(QTMIPS_ARGS_COMMON);
};
#define SANITY_ASSERT(COND, MSG) do { if (!(COND)) throw QTMIPS_EXCEPTION(Sanity, "Sanity check failed (" #COND ")", MSG); } while (false)
#endif // QTMIPSEXCEPTION_H
|
