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2b6b6ac523
At this point we don't output any debug sections or thier relocations. Differential Revision: https://reviews.llvm.org/D39076 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@316240 91177308-0d34-0410-b5e6-96231b3b80d8
91 lines
2.8 KiB
C++
91 lines
2.8 KiB
C++
//===- MCSectionWasm.h - Wasm 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 MCSectionWasm class.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_MC_MCSECTIONWASM_H
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#define LLVM_MC_MCSECTIONWASM_H
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#include "llvm/ADT/Twine.h"
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#include "llvm/MC/MCSection.h"
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#include "llvm/MC/MCSymbolWasm.h"
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#include "llvm/Support/Debug.h"
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#include "llvm/Support/raw_ostream.h"
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namespace llvm {
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class MCSymbol;
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/// This represents a section on wasm.
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class MCSectionWasm final : public MCSection {
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private:
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/// This is the name of the section. The referenced memory is owned by
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/// TargetLoweringObjectFileWasm's WasmUniqueMap.
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StringRef SectionName;
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unsigned UniqueID;
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const MCSymbolWasm *Group;
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// The offset of the MC function/data section in the wasm code/data section.
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// For data relocations the offset is relative to start of the data payload
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// itself and does not include the size of the section header.
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uint64_t SectionOffset;
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// For data sections, this is the offset of the corresponding wasm data
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// segment
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uint64_t MemoryOffset;
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friend class MCContext;
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MCSectionWasm(StringRef Section, SectionKind K, const MCSymbolWasm *group,
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unsigned UniqueID, MCSymbol *Begin)
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: MCSection(SV_Wasm, K, Begin), SectionName(Section), UniqueID(UniqueID),
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Group(group), SectionOffset(0) {}
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void setSectionName(StringRef Name) { SectionName = Name; }
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public:
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~MCSectionWasm();
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/// Decides whether a '.section' directive should be printed before the
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/// section name
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bool ShouldOmitSectionDirective(StringRef Name, const MCAsmInfo &MAI) const;
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StringRef getSectionName() const { return SectionName; }
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const MCSymbolWasm *getGroup() const { return Group; }
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void PrintSwitchToSection(const MCAsmInfo &MAI, const Triple &T,
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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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bool isWasmData() const {
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return Kind.isGlobalWriteableData() || Kind.isReadOnly();
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}
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bool isUnique() const { return UniqueID != ~0U; }
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unsigned getUniqueID() const { return UniqueID; }
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uint64_t getSectionOffset() const { return SectionOffset; }
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void setSectionOffset(uint64_t Offset) { SectionOffset = Offset; }
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uint32_t getMemoryOffset() const { return MemoryOffset; }
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void setMemoryOffset(uint32_t Offset) { MemoryOffset = Offset; }
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static bool classof(const MCSection *S) { return S->getVariant() == SV_Wasm; }
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};
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} // end namespace llvm
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#endif
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