mirror of
https://github.com/RPCS3/llvm-mirror.git
synced 2024-11-23 19:23:23 +01:00
9928505155
Summary: Take care of some missing clean-ups that belong with r249548 and some other copy/paste that had happened. In particular, the destructors are no longer vtable anchors after r249548; and `setSectionName` in `MCSectionWasm` is private and unused since r313058 culled its only caller. The destructors are now implicitly defined, and the unused function is removed. Reviewers: nemanjai, jasonliu, grosbach Reviewed By: nemanjai Subscribers: sbc100, aheejin, sunfish, llvm-commits Tags: #llvm Differential Revision: https://reviews.llvm.org/D57182 llvm-svn: 353597
98 lines
3.4 KiB
C++
98 lines
3.4 KiB
C++
//===- MCSectionCOFF.h - COFF Machine Code Sections -------------*- C++ -*-===//
|
|
//
|
|
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
|
|
// See https://llvm.org/LICENSE.txt for license information.
|
|
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
//
|
|
// This file declares the MCSectionCOFF class.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#ifndef LLVM_MC_MCSECTIONCOFF_H
|
|
#define LLVM_MC_MCSECTIONCOFF_H
|
|
|
|
#include "llvm/ADT/StringRef.h"
|
|
#include "llvm/MC/MCSection.h"
|
|
#include "llvm/MC/SectionKind.h"
|
|
#include <cassert>
|
|
|
|
namespace llvm {
|
|
|
|
class MCSymbol;
|
|
|
|
/// This represents a section on Windows
|
|
class MCSectionCOFF final : public MCSection {
|
|
// The memory for this string is stored in the same MCContext as *this.
|
|
StringRef SectionName;
|
|
|
|
// FIXME: The following fields should not be mutable, but are for now so the
|
|
// asm parser can honor the .linkonce directive.
|
|
|
|
/// This is the Characteristics field of a section, drawn from the enums
|
|
/// below.
|
|
mutable unsigned Characteristics;
|
|
|
|
/// The unique IDs used with the .pdata and .xdata sections created internally
|
|
/// by the assembler. This ID is used to ensure that for every .text section,
|
|
/// there is exactly one .pdata and one .xdata section, which is required by
|
|
/// the Microsoft incremental linker. This data is mutable because this ID is
|
|
/// not notionally part of the section.
|
|
mutable unsigned WinCFISectionID = ~0U;
|
|
|
|
/// The COMDAT symbol of this section. Only valid if this is a COMDAT section.
|
|
/// Two COMDAT sections are merged if they have the same COMDAT symbol.
|
|
MCSymbol *COMDATSymbol;
|
|
|
|
/// This is the Selection field for the section symbol, if it is a COMDAT
|
|
/// section (Characteristics & IMAGE_SCN_LNK_COMDAT) != 0
|
|
mutable int Selection;
|
|
|
|
private:
|
|
friend class MCContext;
|
|
MCSectionCOFF(StringRef Section, unsigned Characteristics,
|
|
MCSymbol *COMDATSymbol, int Selection, SectionKind K,
|
|
MCSymbol *Begin)
|
|
: MCSection(SV_COFF, K, Begin), SectionName(Section),
|
|
Characteristics(Characteristics), COMDATSymbol(COMDATSymbol),
|
|
Selection(Selection) {
|
|
assert((Characteristics & 0x00F00000) == 0 &&
|
|
"alignment must not be set upon section creation");
|
|
}
|
|
|
|
public:
|
|
/// Decides whether a '.section' directive should be printed before the
|
|
/// section name
|
|
bool ShouldOmitSectionDirective(StringRef Name, const MCAsmInfo &MAI) const;
|
|
|
|
StringRef getSectionName() const { return SectionName; }
|
|
unsigned getCharacteristics() const { return Characteristics; }
|
|
MCSymbol *getCOMDATSymbol() const { return COMDATSymbol; }
|
|
int getSelection() const { return Selection; }
|
|
|
|
void setSelection(int Selection) const;
|
|
|
|
void PrintSwitchToSection(const MCAsmInfo &MAI, const Triple &T,
|
|
raw_ostream &OS,
|
|
const MCExpr *Subsection) const override;
|
|
bool UseCodeAlign() const override;
|
|
bool isVirtualSection() const override;
|
|
|
|
unsigned getOrAssignWinCFISectionID(unsigned *NextID) const {
|
|
if (WinCFISectionID == ~0U)
|
|
WinCFISectionID = (*NextID)++;
|
|
return WinCFISectionID;
|
|
}
|
|
|
|
static bool isImplicitlyDiscardable(StringRef Name) {
|
|
return Name.startswith(".debug");
|
|
}
|
|
|
|
static bool classof(const MCSection *S) { return S->getVariant() == SV_COFF; }
|
|
};
|
|
|
|
} // end namespace llvm
|
|
|
|
#endif // LLVM_MC_MCSECTIONCOFF_H
|