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
|
//===-EDToken.h - LLVM Enhanced Disassembler --------------------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file defines the interface for the Enhanced Disassembly library's token
// class. The token is responsible for vending information about the token,
// such as its type and logical value.
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_EDTOKEN_H
#define LLVM_EDTOKEN_H
#include "llvm/ADT/StringRef.h"
#include "llvm/Support/DataTypes.h"
#include <string>
#include <vector>
namespace llvm {
struct EDDisassembler;
/// EDToken - Encapsulates a single token, which can provide a string
/// representation of itself or interpret itself in various ways, depending
/// on the token type.
struct EDToken {
enum tokenType {
kTokenWhitespace,
kTokenOpcode,
kTokenLiteral,
kTokenRegister,
kTokenPunctuation
};
/// The parent disassembler
EDDisassembler &Disassembler;
/// The token's string representation
llvm::StringRef Str;
/// The token's string representation, but in a form suitable for export
std::string PermStr;
/// The type of the token, as exposed through the external API
enum tokenType Type;
/// The type of the token, as recorded by the syntax-specific tokenizer
uint64_t LocalType;
/// The operand corresponding to the token, or (unsigned int)-1 if not
/// part of an operand.
int OperandID;
/// The sign if the token is a literal (1 if negative, 0 otherwise)
bool LiteralSign;
/// The absolute value if the token is a literal
uint64_t LiteralAbsoluteValue;
/// The LLVM register ID if the token is a register name
unsigned RegisterID;
/// Constructor - Initializes an EDToken with the information common to all
/// tokens
///
/// @arg str - The string corresponding to the token
/// @arg type - The token's type as exposed through the public API
/// @arg localType - The token's type as recorded by the tokenizer
/// @arg disassembler - The disassembler responsible for the token
EDToken(llvm::StringRef str,
enum tokenType type,
uint64_t localType,
EDDisassembler &disassembler);
/// makeLiteral - Adds the information specific to a literal
/// @arg sign - The sign of the literal (1 if negative, 0
/// otherwise)
///
/// @arg absoluteValue - The absolute value of the literal
void makeLiteral(bool sign, uint64_t absoluteValue);
/// makeRegister - Adds the information specific to a register
///
/// @arg registerID - The LLVM register ID
void makeRegister(unsigned registerID);
/// setOperandID - Links the token to a numbered operand
///
/// @arg operandID - The operand ID to link to
void setOperandID(int operandID);
~EDToken();
/// type - Returns the public type of the token
enum tokenType type() const;
/// localType - Returns the tokenizer-specific type of the token
uint64_t localType() const;
/// string - Returns the string representation of the token
llvm::StringRef string() const;
/// operandID - Returns the operand ID of the token
int operandID() const;
/// literalSign - Returns the sign of the token
/// (1 if negative, 0 if positive or unsigned, -1 if it is not a literal)
int literalSign() const;
/// literalAbsoluteValue - Retrieves the absolute value of the token, and
/// returns -1 if the token is not a literal
/// @arg value - A reference to a value that is filled in with the absolute
/// value, if it is valid
int literalAbsoluteValue(uint64_t &value) const;
/// registerID - Retrieves the register ID of the token, and returns -1 if the
/// token is not a register
///
/// @arg registerID - A reference to a value that is filled in with the
/// register ID, if it is valid
int registerID(unsigned ®isterID) const;
/// tokenize - Tokenizes a string using the platform- and syntax-specific
/// tokenizer, and returns 0 on success (-1 on failure)
///
/// @arg tokens - A vector that will be filled in with pointers to
/// allocated tokens
/// @arg str - The string, as outputted by the AsmPrinter
/// @arg operandOrder - The order of the operands from the operandFlags array
/// as they appear in str
/// @arg disassembler - The disassembler for the desired target and
// assembly syntax
static int tokenize(std::vector<EDToken*> &tokens,
std::string &str,
const signed char *operandOrder,
EDDisassembler &disassembler);
/// getString - Directs a character pointer to the string, returning 0 on
/// success (-1 on failure)
/// @arg buf - A reference to a pointer that is set to point to the string.
/// The string is still owned by the token.
int getString(const char*& buf);
};
} // end namespace llvm
#endif
|
