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Diffstat (limited to 'COFF/ModuleDef.cpp')
| -rw-r--r-- | COFF/ModuleDef.cpp | 304 |
1 files changed, 0 insertions, 304 deletions
diff --git a/COFF/ModuleDef.cpp b/COFF/ModuleDef.cpp deleted file mode 100644 index 740ce867a7c4..000000000000 --- a/COFF/ModuleDef.cpp +++ /dev/null @@ -1,304 +0,0 @@ -//===- COFF/ModuleDef.cpp -------------------------------------------------===// -// -// The LLVM Linker -// -// This file is distributed under the University of Illinois Open Source -// License. See LICENSE.TXT for details. -// -//===----------------------------------------------------------------------===// -// -// Windows-specific. -// A parser for the module-definition file (.def file). -// Parsed results are directly written to Config global variable. -// -// The format of module-definition files are described in this document: -// https://msdn.microsoft.com/en-us/library/28d6s79h.aspx -// -//===----------------------------------------------------------------------===// - -#include "Config.h" -#include "Error.h" -#include "Memory.h" -#include "llvm/ADT/StringRef.h" -#include "llvm/ADT/StringSwitch.h" -#include "llvm/Support/StringSaver.h" -#include "llvm/Support/raw_ostream.h" -#include <system_error> - -using namespace llvm; - -namespace lld { -namespace coff { -namespace { - -enum Kind { - Unknown, - Eof, - Identifier, - Comma, - Equal, - KwBase, - KwConstant, - KwData, - KwExports, - KwHeapsize, - KwLibrary, - KwName, - KwNoname, - KwPrivate, - KwStacksize, - KwVersion, -}; - -struct Token { - explicit Token(Kind T = Unknown, StringRef S = "") : K(T), Value(S) {} - Kind K; - StringRef Value; -}; - -static bool isDecorated(StringRef Sym) { - return Sym.startswith("_") || Sym.startswith("@") || Sym.startswith("?"); -} - -class Lexer { -public: - explicit Lexer(StringRef S) : Buf(S) {} - - Token lex() { - Buf = Buf.trim(); - if (Buf.empty()) - return Token(Eof); - - switch (Buf[0]) { - case '\0': - return Token(Eof); - case ';': { - size_t End = Buf.find('\n'); - Buf = (End == Buf.npos) ? "" : Buf.drop_front(End); - return lex(); - } - case '=': - Buf = Buf.drop_front(); - return Token(Equal, "="); - case ',': - Buf = Buf.drop_front(); - return Token(Comma, ","); - case '"': { - StringRef S; - std::tie(S, Buf) = Buf.substr(1).split('"'); - return Token(Identifier, S); - } - default: { - size_t End = Buf.find_first_of("=,\r\n \t\v"); - StringRef Word = Buf.substr(0, End); - Kind K = llvm::StringSwitch<Kind>(Word) - .Case("BASE", KwBase) - .Case("CONSTANT", KwConstant) - .Case("DATA", KwData) - .Case("EXPORTS", KwExports) - .Case("HEAPSIZE", KwHeapsize) - .Case("LIBRARY", KwLibrary) - .Case("NAME", KwName) - .Case("NONAME", KwNoname) - .Case("PRIVATE", KwPrivate) - .Case("STACKSIZE", KwStacksize) - .Case("VERSION", KwVersion) - .Default(Identifier); - Buf = (End == Buf.npos) ? "" : Buf.drop_front(End); - return Token(K, Word); - } - } - } - -private: - StringRef Buf; -}; - -class Parser { -public: - explicit Parser(StringRef S) : Lex(S) {} - - void parse() { - do { - parseOne(); - } while (Tok.K != Eof); - } - -private: - void read() { - if (Stack.empty()) { - Tok = Lex.lex(); - return; - } - Tok = Stack.back(); - Stack.pop_back(); - } - - void readAsInt(uint64_t *I) { - read(); - if (Tok.K != Identifier || Tok.Value.getAsInteger(10, *I)) - fatal("integer expected"); - } - - void expect(Kind Expected, StringRef Msg) { - read(); - if (Tok.K != Expected) - fatal(Msg); - } - - void unget() { Stack.push_back(Tok); } - - void parseOne() { - read(); - switch (Tok.K) { - case Eof: - return; - case KwExports: - for (;;) { - read(); - if (Tok.K != Identifier) { - unget(); - return; - } - parseExport(); - } - case KwHeapsize: - parseNumbers(&Config->HeapReserve, &Config->HeapCommit); - return; - case KwStacksize: - parseNumbers(&Config->StackReserve, &Config->StackCommit); - return; - case KwLibrary: - case KwName: { - bool IsDll = Tok.K == KwLibrary; // Check before parseName. - std::string Name; - parseName(&Name, &Config->ImageBase); - - // Append the appropriate file extension if not already present. - StringRef Ext = IsDll ? ".dll" : ".exe"; - if (!StringRef(Name).endswith_lower(Ext)) - Name += Ext; - - // Set the output file, but don't override /out if it was already passed. - if (Config->OutputFile.empty()) - Config->OutputFile = Name; - return; - } - case KwVersion: - parseVersion(&Config->MajorImageVersion, &Config->MinorImageVersion); - return; - default: - fatal("unknown directive: " + Tok.Value); - } - } - - void parseExport() { - Export E; - E.Name = Tok.Value; - read(); - if (Tok.K == Equal) { - read(); - if (Tok.K != Identifier) - fatal("identifier expected, but got " + Tok.Value); - E.ExtName = E.Name; - E.Name = Tok.Value; - } else { - unget(); - } - - if (Config->Machine == I386) { - if (!isDecorated(E.Name)) - E.Name = Saver.save("_" + E.Name); - if (!E.ExtName.empty() && !isDecorated(E.ExtName)) - E.ExtName = Saver.save("_" + E.ExtName); - } - - for (;;) { - read(); - if (Tok.K == Identifier && Tok.Value[0] == '@') { - Tok.Value.drop_front().getAsInteger(10, E.Ordinal); - read(); - if (Tok.K == KwNoname) { - E.Noname = true; - } else { - unget(); - } - continue; - } - if (Tok.K == KwData) { - E.Data = true; - continue; - } - if (Tok.K == KwConstant) { - warn("CONSTANT keyword is obsolete; use DATA"); - E.Constant = true; - continue; - } - if (Tok.K == KwPrivate) { - E.Private = true; - continue; - } - unget(); - Config->Exports.push_back(E); - return; - } - } - - // HEAPSIZE/STACKSIZE reserve[,commit] - void parseNumbers(uint64_t *Reserve, uint64_t *Commit) { - readAsInt(Reserve); - read(); - if (Tok.K != Comma) { - unget(); - Commit = nullptr; - return; - } - readAsInt(Commit); - } - - // NAME outputPath [BASE=address] - void parseName(std::string *Out, uint64_t *Baseaddr) { - read(); - if (Tok.K == Identifier) { - *Out = Tok.Value; - } else { - *Out = ""; - unget(); - return; - } - read(); - if (Tok.K == KwBase) { - expect(Equal, "'=' expected"); - readAsInt(Baseaddr); - } else { - unget(); - *Baseaddr = 0; - } - } - - // VERSION major[.minor] - void parseVersion(uint32_t *Major, uint32_t *Minor) { - read(); - if (Tok.K != Identifier) - fatal("identifier expected, but got " + Tok.Value); - StringRef V1, V2; - std::tie(V1, V2) = Tok.Value.split('.'); - if (V1.getAsInteger(10, *Major)) - fatal("integer expected, but got " + Tok.Value); - if (V2.empty()) - *Minor = 0; - else if (V2.getAsInteger(10, *Minor)) - fatal("integer expected, but got " + Tok.Value); - } - - Lexer Lex; - Token Tok; - std::vector<Token> Stack; -}; - -} // anonymous namespace - -void parseModuleDefs(MemoryBufferRef MB) { Parser(MB.getBuffer()).parse(); } - -} // namespace coff -} // namespace lld |