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AsmParser.cpp (204961) AsmParser.cpp (205218)
1//===- AsmParser.cpp - Parser for Assembly Files --------------------------===//
2//
3// The LLVM Compiler Infrastructure
4//
5// This file is distributed under the University of Illinois Open Source
6// License. See LICENSE.TXT for details.
7//
8//===----------------------------------------------------------------------===//

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15#include "llvm/ADT/SmallString.h"
16#include "llvm/ADT/Twine.h"
17#include "llvm/MC/MCContext.h"
18#include "llvm/MC/MCExpr.h"
19#include "llvm/MC/MCInst.h"
20#include "llvm/MC/MCSectionMachO.h"
21#include "llvm/MC/MCStreamer.h"
22#include "llvm/MC/MCSymbol.h"
1//===- AsmParser.cpp - Parser for Assembly Files --------------------------===//
2//
3// The LLVM Compiler Infrastructure
4//
5// This file is distributed under the University of Illinois Open Source
6// License. See LICENSE.TXT for details.
7//
8//===----------------------------------------------------------------------===//

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15#include "llvm/ADT/SmallString.h"
16#include "llvm/ADT/Twine.h"
17#include "llvm/MC/MCContext.h"
18#include "llvm/MC/MCExpr.h"
19#include "llvm/MC/MCInst.h"
20#include "llvm/MC/MCSectionMachO.h"
21#include "llvm/MC/MCStreamer.h"
22#include "llvm/MC/MCSymbol.h"
23#include "llvm/MC/MCValue.h"
24#include "llvm/MC/MCParser/MCParsedAsmOperand.h"
25#include "llvm/Support/Compiler.h"
26#include "llvm/Support/SourceMgr.h"
27#include "llvm/Support/raw_ostream.h"
28#include "llvm/Target/TargetAsmParser.h"
29using namespace llvm;
30
31

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134 }
135
136 if (tok->is(AsmToken::Error))
137 PrintMessage(Lexer.getErrLoc(), Lexer.getErr(), "error");
138
139 return *tok;
140}
141
23#include "llvm/MC/MCParser/MCParsedAsmOperand.h"
24#include "llvm/Support/Compiler.h"
25#include "llvm/Support/SourceMgr.h"
26#include "llvm/Support/raw_ostream.h"
27#include "llvm/Target/TargetAsmParser.h"
28using namespace llvm;
29
30

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133 }
134
135 if (tok->is(AsmToken::Error))
136 PrintMessage(Lexer.getErrLoc(), Lexer.getErr(), "error");
137
138 return *tok;
139}
140
142bool AsmParser::Run() {
143 // Create the initial section.
141bool AsmParser::Run(bool NoInitialTextSection) {
142 // Create the initial section, if requested.
144 //
143 //
145 // FIXME: Support -n.
146 // FIXME: Target hook & command line option for initial section.
144 // FIXME: Target hook & command line option for initial section.
147 Out.SwitchSection(getMachOSection("__TEXT", "__text",
148 MCSectionMachO::S_ATTR_PURE_INSTRUCTIONS,
149 0, SectionKind::getText()));
145 if (!NoInitialTextSection)
146 Out.SwitchSection(getMachOSection("__TEXT", "__text",
147 MCSectionMachO::S_ATTR_PURE_INSTRUCTIONS,
148 0, SectionKind::getText()));
150
149
151
152 // Prime the lexer.
153 Lex();
154
155 bool HadError = false;
156
157 AsmCond StartingCondState = TheCondState;
158
159 // While we have input, parse each statement.

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259 Lex(); // Eat the operator.
260 if (ParsePrimaryExpr(Res, EndLoc))
261 return true;
262 Res = MCUnaryExpr::CreateLNot(Res, getContext());
263 return false;
264 case AsmToken::String:
265 case AsmToken::Identifier: {
266 // This is a symbol reference.
150 // Prime the lexer.
151 Lex();
152
153 bool HadError = false;
154
155 AsmCond StartingCondState = TheCondState;
156
157 // While we have input, parse each statement.

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257 Lex(); // Eat the operator.
258 if (ParsePrimaryExpr(Res, EndLoc))
259 return true;
260 Res = MCUnaryExpr::CreateLNot(Res, getContext());
261 return false;
262 case AsmToken::String:
263 case AsmToken::Identifier: {
264 // This is a symbol reference.
267 MCSymbol *Sym = CreateSymbol(getTok().getIdentifier());
265 std::pair<StringRef, StringRef> Split = getTok().getIdentifier().split('@');
266 MCSymbol *Sym = CreateSymbol(Split.first);
267
268 // Lookup the symbol variant if used.
269 MCSymbolRefExpr::VariantKind Variant = MCSymbolRefExpr::VK_None;
270 if (Split.first.size() != getTok().getIdentifier().size())
271 Variant = MCSymbolRefExpr::getVariantKindForName(Split.second);
272
268 EndLoc = Lexer.getLoc();
269 Lex(); // Eat identifier.
270
271 // If this is an absolute variable reference, substitute it now to preserve
272 // semantics in the face of reassignment.
273 if (Sym->getValue() && isa<MCConstantExpr>(Sym->getValue())) {
273 EndLoc = Lexer.getLoc();
274 Lex(); // Eat identifier.
275
276 // If this is an absolute variable reference, substitute it now to preserve
277 // semantics in the face of reassignment.
278 if (Sym->getValue() && isa<MCConstantExpr>(Sym->getValue())) {
279 if (Variant)
280 return Error(EndLoc, "unexpected modified on variable reference");
281
274 Res = Sym->getValue();
275 return false;
276 }
277
278 // Otherwise create a symbol ref.
282 Res = Sym->getValue();
283 return false;
284 }
285
286 // Otherwise create a symbol ref.
279 Res = MCSymbolRefExpr::Create(Sym, getContext());
287 Res = MCSymbolRefExpr::Create(Sym, Variant, getContext());
280 return false;
281 }
282 case AsmToken::Integer:
283 Res = MCConstantExpr::Create(getTok().getIntVal(), getContext());
284 EndLoc = Lexer.getLoc();
285 Lex(); // Eat token.
286 return false;
287 case AsmToken::LParen:

--- 1511 unchanged lines hidden --- 		288 return false;
289 }
290 case AsmToken::Integer:
291 Res = MCConstantExpr::Create(getTok().getIntVal(), getContext());
292 EndLoc = Lexer.getLoc();
293 Lex(); // Eat token.
294 return false;
295 case AsmToken::LParen:

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