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
|
//===-- llvm/MC/MCTargetAsmParser.h - Target Assembly Parser ----*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_MC_TARGETPARSER_H
#define LLVM_MC_TARGETPARSER_H
#include "llvm/MC/MCParser/MCAsmParserExtension.h"
namespace llvm {
class MCStreamer;
class StringRef;
class SMLoc;
class AsmToken;
class MCParsedAsmOperand;
class MCInst;
template <typename T> class SmallVectorImpl;
/// MCTargetAsmParser - Generic interface to target specific assembly parsers.
class MCTargetAsmParser : public MCAsmParserExtension {
public:
enum MatchResultTy {
Match_InvalidOperand,
Match_MissingFeature,
Match_MnemonicFail,
Match_Success,
FIRST_TARGET_MATCH_RESULT_TY
};
private:
MCTargetAsmParser(const MCTargetAsmParser &) LLVM_DELETED_FUNCTION;
void operator=(const MCTargetAsmParser &) LLVM_DELETED_FUNCTION;
protected: // Can only create subclasses.
MCTargetAsmParser();
/// AvailableFeatures - The current set of available features.
unsigned AvailableFeatures;
/// ParsingInlineAsm - Are we parsing ms-style inline assembly?
bool ParsingInlineAsm;
/// SemaCallback - The Sema callback implementation. Must be set when parsing
/// ms-style inline assembly.
MCAsmParserSemaCallback *SemaCallback;
public:
virtual ~MCTargetAsmParser();
unsigned getAvailableFeatures() const { return AvailableFeatures; }
void setAvailableFeatures(unsigned Value) { AvailableFeatures = Value; }
bool isParsingInlineAsm () { return ParsingInlineAsm; }
void setParsingInlineAsm (bool Value) { ParsingInlineAsm = Value; }
void setSemaCallback(MCAsmParserSemaCallback *Callback) {
SemaCallback = Callback;
}
virtual bool ParseRegister(unsigned &RegNo, SMLoc &StartLoc,
SMLoc &EndLoc) = 0;
/// ParseInstruction - Parse one assembly instruction.
///
/// The parser is positioned following the instruction name. The target
/// specific instruction parser should parse the entire instruction and
/// construct the appropriate MCInst, or emit an error. On success, the entire
/// line should be parsed up to and including the end-of-statement token. On
/// failure, the parser is not required to read to the end of the line.
//
/// \param Name - The instruction name.
/// \param NameLoc - The source location of the name.
/// \param Operands [out] - The list of parsed operands, this returns
/// ownership of them to the caller.
/// \return True on failure.
virtual bool ParseInstruction(StringRef Name, SMLoc NameLoc,
SmallVectorImpl<MCParsedAsmOperand*> &Operands) = 0;
/// ParseDirective - Parse a target specific assembler directive
///
/// The parser is positioned following the directive name. The target
/// specific directive parser should parse the entire directive doing or
/// recording any target specific work, or return true and do nothing if the
/// directive is not target specific. If the directive is specific for
/// the target, the entire line is parsed up to and including the
/// end-of-statement token and false is returned.
///
/// \param DirectiveID - the identifier token of the directive.
virtual bool ParseDirective(AsmToken DirectiveID) = 0;
/// mnemonicIsValid - This returns true if this is a valid mnemonic and false
/// otherwise.
virtual bool mnemonicIsValid(StringRef Mnemonic) = 0;
/// MatchAndEmitInstruction - Recognize a series of operands of a parsed
/// instruction as an actual MCInst and emit it to the specified MCStreamer.
/// This returns false on success and returns true on failure to match.
///
/// On failure, the target parser is responsible for emitting a diagnostic
/// explaining the match failure.
virtual bool
MatchAndEmitInstruction(SMLoc IDLoc, unsigned &Opcode,
SmallVectorImpl<MCParsedAsmOperand*> &Operands,
MCStreamer &Out, unsigned &ErrorInfo,
bool MatchingInlineAsm) = 0;
/// checkTargetMatchPredicate - Validate the instruction match against
/// any complex target predicates not expressible via match classes.
virtual unsigned checkTargetMatchPredicate(MCInst &Inst) {
return Match_Success;
}
virtual void convertToMapAndConstraints(unsigned Kind,
const SmallVectorImpl<MCParsedAsmOperand*> &Operands) = 0;
};
} // End llvm namespace
#endif
|
