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https://github.com/c64scene-ar/llvm-6502.git
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f3d745cdc9
This lets us pass the symbol to the constructor and avoid the mutable field. This also opens the way for outputting the symbol only when needed, instead of outputting them at the start of the file. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@231859 91177308-0d34-0410-b5e6-96231b3b80d8
93 lines
3.4 KiB
C++
93 lines
3.4 KiB
C++
//===- MCSectionMachO.h - MachO Machine Code Sections -----------*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This file declares the MCSectionMachO class.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_MC_MCSECTIONMACHO_H
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#define LLVM_MC_MCSECTIONMACHO_H
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#include "llvm/ADT/StringRef.h"
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#include "llvm/MC/MCSection.h"
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#include "llvm/Support/MachO.h"
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namespace llvm {
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/// MCSectionMachO - This represents a section on a Mach-O system (used by
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/// Mac OS X). On a Mac system, these are also described in
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/// /usr/include/mach-o/loader.h.
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class MCSectionMachO : public MCSection {
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char SegmentName[16]; // Not necessarily null terminated!
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char SectionName[16]; // Not necessarily null terminated!
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/// TypeAndAttributes - This is the SECTION_TYPE and SECTION_ATTRIBUTES
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/// field of a section, drawn from the enums below.
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unsigned TypeAndAttributes;
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/// Reserved2 - The 'reserved2' field of a section, used to represent the
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/// size of stubs, for example.
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unsigned Reserved2;
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MCSectionMachO(StringRef Segment, StringRef Section, unsigned TAA,
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unsigned reserved2, SectionKind K, MCSymbol *Begin);
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friend class MCContext;
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public:
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StringRef getSegmentName() const {
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// SegmentName is not necessarily null terminated!
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if (SegmentName[15])
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return StringRef(SegmentName, 16);
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return StringRef(SegmentName);
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}
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StringRef getSectionName() const {
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// SectionName is not necessarily null terminated!
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if (SectionName[15])
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return StringRef(SectionName, 16);
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return StringRef(SectionName);
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}
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unsigned getTypeAndAttributes() const { return TypeAndAttributes; }
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unsigned getStubSize() const { return Reserved2; }
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MachO::SectionType getType() const {
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return static_cast<MachO::SectionType>(TypeAndAttributes &
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MachO::SECTION_TYPE);
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}
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bool hasAttribute(unsigned Value) const {
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return (TypeAndAttributes & Value) != 0;
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}
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/// ParseSectionSpecifier - Parse the section specifier indicated by "Spec".
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/// This is a string that can appear after a .section directive in a mach-o
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/// flavored .s file. If successful, this fills in the specified Out
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/// parameters and returns an empty string. When an invalid section
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/// specifier is present, this returns a string indicating the problem.
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/// If no TAA was parsed, TAA is not altered, and TAAWasSet becomes false.
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static std::string ParseSectionSpecifier(StringRef Spec, // In.
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StringRef &Segment, // Out.
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StringRef &Section, // Out.
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unsigned &TAA, // Out.
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bool &TAAParsed, // Out.
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unsigned &StubSize); // Out.
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void PrintSwitchToSection(const MCAsmInfo &MAI, raw_ostream &OS,
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const MCExpr *Subsection) const override;
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bool UseCodeAlign() const override;
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bool isVirtualSection() const override;
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static bool classof(const MCSection *S) {
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return S->getVariant() == SV_MachO;
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}
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};
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} // end namespace llvm
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#endif
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