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https://github.com/c64scene-ar/llvm-6502.git
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f5955c7dac
This is a straightfoward replacement, it makes debugging a little easier. This has no functional impact. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@203264 91177308-0d34-0410-b5e6-96231b3b80d8
101 lines
3.6 KiB
C++
101 lines
3.6 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,
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unsigned TAA, unsigned reserved2, SectionKind K);
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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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std::string getLabelBeginName() const override {
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return StringRef(getSegmentName().str() + getSectionName().str() + "_begin");
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}
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std::string getLabelEndName() const override {
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return StringRef(getSegmentName().str() + getSectionName().str() + "_end");
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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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