+++ /dev/null
-//===- MCAtom.h - Machine Code Atoms ----------------------------*- 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_MCATOM_H
-#define LLVM_MC_MCATOM_H
-
-namespace llvm {
-
- class MCAtom {
- MCSection *Section;
-
- public:
- MCAtom(MCSection *_Section) : Section(_Section) {}
-
- MCSection *getSection() { return Section; }
- };
-
-} // end namespace llvm
-
-#endif
#include "llvm/Support/Allocator.h"
namespace llvm {
- class MCAtom;
class MCValue;
class MCSection;
class MCSymbol;
/// GetSection - Get or create a new section with the given @param Name.
MCSection *GetSection(const char *Name);
- /// CreateAtom - Create a new atom inside @param Section.
- MCAtom *CreateAtom(MCSection *Section);
-
- /// CreateSymbol - Create a new symbol inside @param Atom with the specified
- /// @param Name.
+ /// CreateSymbol - Create a new symbol with the specified @param Name.
///
/// @param Name - The symbol name, which must be unique across all symbols.
- MCSymbol *CreateSymbol(MCAtom *Atom, const char *Name);
+ MCSymbol *CreateSymbol(const char *Name);
/// GetOrCreateSymbol - Lookup the symbol inside with the specified
/// @param Name. If it exists, return it. If not, create a forward
/// @param Name - The symbol name, which must be unique across all symbols.
MCSymbol *GetOrCreateSymbol(const char *Name);
- /// CreateTemporarySymbol - Create a new temporary symbol inside @param Atom
- /// with the specified @param Name.
+ /// CreateTemporarySymbol - Create a new temporary symbol with the specified
+ /// @param Name.
///
/// @param Name - The symbol name, for debugging purposes only, temporary
/// symbols do not surive assembly. If non-empty the name must be unique
/// across all symbols.
- MCSymbol *CreateTemporarySymbol(MCAtom *Atom, const char *Name = "");
+ MCSymbol *CreateTemporarySymbol(const char *Name = "");
/// LookupSymbol - Get the symbol for @param Name, or null.
MCSymbol *LookupSymbol(const char *Name) const;
#define LLVM_MC_MCSTREAMER_H
namespace llvm {
- class MCAtom;
class MCContext;
class MCValue;
class MCInst;
#include <string>
namespace llvm {
- class MCAtom;
-
class MCSymbol {
- MCAtom *Atom;
+ MCSection *Section;
std::string Name;
unsigned IsTemporary : 1;
public:
- MCSymbol(MCAtom *_Atom, const char *_Name, bool _IsTemporary)
- : Atom(_Atom), Name(_Name), IsTemporary(_IsTemporary) {}
+ MCSymbol(const char *_Name, bool _IsTemporary)
+ : Section(0), Name(_Name), IsTemporary(_IsTemporary) {}
- MCAtom *getAtom() { return Atom; }
+ MCSection *getSection() const { return Section; }
+ void setSection(MCSection *Value) { Section = Value; }
- const std::string &getName() { return Name; }
+ const std::string &getName() const { return Name; }
};
} // end namespace llvm
#include "llvm/MC/MCStreamer.h"
-#include "llvm/MC/MCAtom.h"
#include "llvm/MC/MCContext.h"
#include "llvm/MC/MCSection.h"
#include "llvm/MC/MCSymbol.h"
}
void MCAsmStreamer::EmitLabel(MCSymbol *Symbol) {
- // FIXME: We need to enforce that we aren't printing atoms which are more
- // complicated than the assembler understands.
- //assert(Symbol->getAtom()->getSection() == CurSection &&
- // "The label for a symbol must match its section!");
+ assert(Symbol->getSection() == 0 && "Cannot emit a symbol twice!");
+ assert(CurSection && "Cannot emit before setting section!");
+ assert(!getContext().GetSymbolValue(Symbol) &&
+ "Cannot emit symbol which was directly assigned to!");
+
OS << Symbol->getName() << ":\n";
+ Symbol->setSection(CurSection);
}
void MCAsmStreamer::EmitAssignment(MCSymbol *Symbol, const MCValue &Value,
bool MakeAbsolute) {
+ assert(!Symbol->getSection() && "Cannot assign to a label!");
+
if (MakeAbsolute) {
OS << ".set " << Symbol->getName() << ", " << Value << '\n';
} else {
OS << Symbol->getName() << " = " << Value << '\n';
}
+
+ getContext().SetSymbolValue(Symbol, Value);
}
void MCAsmStreamer::EmitSymbolAttribute(MCSymbol *Symbol,
}
void MCAsmStreamer::EmitBytes(const char *Data, unsigned Length) {
- for (unsigned i = 0; i != Length; ++i) {
+ assert(CurSection && "Cannot emit contents before setting section!");
+ for (unsigned i = 0; i != Length; ++i)
OS << ".byte " << (unsigned) Data[i] << '\n';
- }
}
void MCAsmStreamer::EmitValue(const MCValue &Value, unsigned Size) {
+ assert(CurSection && "Cannot emit contents before setting section!");
// Need target hooks to know how to print this.
switch (Size) {
default:
}
void MCAsmStreamer::EmitInstruction(const MCInst &Inst) {
+ assert(CurSection && "Cannot emit contents before setting section!");
// FIXME: Implement.
OS << "# FIXME: Implement instruction printing!\n";
}
#include "llvm/MC/MCContext.h"
-#include "llvm/MC/MCAtom.h"
#include "llvm/MC/MCSection.h"
#include "llvm/MC/MCSymbol.h"
#include "llvm/MC/MCValue.h"
return Entry;
}
-
-MCAtom *MCContext::CreateAtom(MCSection *Section) {
- return new (*this) MCAtom(Section);
-}
-MCSymbol *MCContext::CreateSymbol(MCAtom *Atom, const char *Name) {
+MCSymbol *MCContext::CreateSymbol(const char *Name) {
assert(Name[0] != '\0' && "Normal symbols cannot be unnamed!");
// Create and bind the symbol, and ensure that names are unique.
MCSymbol *&Entry = Symbols[Name];
assert(!Entry && "Duplicate symbol definition!");
- return Entry = new (*this) MCSymbol(Atom, Name, false);
+ return Entry = new (*this) MCSymbol(Name, false);
}
-/// GetOrCreateSymbol - Lookup the symbol inside with the specified
-/// @param Name. If it exists, return it. If not, create a forward
-/// reference and return it.
-///
-/// @param Name - The symbol name, which must be unique across all symbols.
MCSymbol *MCContext::GetOrCreateSymbol(const char *Name) {
MCSymbol *&Entry = Symbols[Name];
if (Entry) return Entry;
- // FIXME: is a null atom the right way to make a forward ref?
- return Entry = new (*this) MCSymbol(0, Name, false);
+ return Entry = new (*this) MCSymbol(Name, false);
}
-MCSymbol *MCContext::CreateTemporarySymbol(MCAtom *Atom, const char *Name) {
+MCSymbol *MCContext::CreateTemporarySymbol(const char *Name) {
// If unnamed, just create a symbol.
if (Name[0] == '\0')
- new (*this) MCSymbol(Atom, "", true);
+ new (*this) MCSymbol("", true);
// Otherwise create as usual.
MCSymbol *&Entry = Symbols[Name];
assert(!Entry && "Duplicate symbol definition!");
- return Entry = new (*this) MCSymbol(Atom, Name, true);
+ return Entry = new (*this) MCSymbol(Name, true);
}
MCSymbol *MCContext::LookupSymbol(const char *Name) const {
TEST(AsmStreamer, Values) {
StringAsmStreamer S;
MCSection *Sec0 = S.getContext().GetSection("foo");
- MCSymbol *A = S.getContext().CreateSymbol(S.getContext().CreateAtom(Sec0),
- "a");
- MCSymbol *B = S.getContext().CreateSymbol(S.getContext().CreateAtom(Sec0),
- "b");
+ MCSymbol *A = S.getContext().CreateSymbol("a");
+ MCSymbol *B = S.getContext().CreateSymbol("b");
S.getStreamer().SwitchSection(Sec0);
S.getStreamer().EmitLabel(A);
S.getStreamer().EmitLabel(B);
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