mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2025-07-22 07:24:47 +00:00
0f4df6dc6f
This makes code that uses section relative expressions (debug info) simpler and less brittle. This is still a bit awkward as the symbol is created late and has to be stored in a mutable field. I will move the symbol creation earlier in the next patch. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@231802 91177308-0d34-0410-b5e6-96231b3b80d8
74 lines
1.9 KiB
C++
74 lines
1.9 KiB
C++
//===- MCSection.h - Machine Code Sections ----------------------*- C++ -*-===//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// This file is distributed under the University of Illinois Open Source
|
|
// License. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
//
|
|
// This file declares the MCSection class.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#ifndef LLVM_MC_MCSECTION_H
|
|
#define LLVM_MC_MCSECTION_H
|
|
|
|
#include "llvm/ADT/StringRef.h"
|
|
#include "llvm/MC/SectionKind.h"
|
|
#include "llvm/Support/Compiler.h"
|
|
|
|
namespace llvm {
|
|
class MCAsmInfo;
|
|
class MCExpr;
|
|
class MCSymbol;
|
|
class raw_ostream;
|
|
|
|
/// Instances of this class represent a uniqued identifier for a section in the
|
|
/// current translation unit. The MCContext class uniques and creates these.
|
|
class MCSection {
|
|
public:
|
|
enum SectionVariant { SV_COFF = 0, SV_ELF, SV_MachO };
|
|
|
|
private:
|
|
MCSection(const MCSection &) = delete;
|
|
void operator=(const MCSection &) = delete;
|
|
|
|
mutable const MCSymbol *Begin;
|
|
|
|
protected:
|
|
MCSection(SectionVariant V, SectionKind K)
|
|
: Begin(nullptr), Variant(V), Kind(K) {}
|
|
SectionVariant Variant;
|
|
SectionKind Kind;
|
|
|
|
public:
|
|
virtual ~MCSection();
|
|
|
|
SectionKind getKind() const { return Kind; }
|
|
|
|
SectionVariant getVariant() const { return Variant; }
|
|
|
|
const MCSymbol *getBeginSymbol() const { return Begin; }
|
|
|
|
void setBeginSymbol(const MCSymbol &L) const {
|
|
assert(!Begin);
|
|
Begin = &L;
|
|
}
|
|
|
|
virtual void PrintSwitchToSection(const MCAsmInfo &MAI, raw_ostream &OS,
|
|
const MCExpr *Subsection) const = 0;
|
|
|
|
/// Return true if a .align directive should use "optimized nops" to fill
|
|
/// instead of 0s.
|
|
virtual bool UseCodeAlign() const = 0;
|
|
|
|
/// Check whether this section is "virtual", that is has no actual object
|
|
/// file contents.
|
|
virtual bool isVirtualSection() const = 0;
|
|
};
|
|
|
|
} // end namespace llvm
|
|
|
|
#endif
|