mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2025-10-30 16:17:05 +00:00
9a744e3860
- Of questionable utility, since in general anything which wants to do this should probably be within a target specific hook, which can rely on the sections being of the appropriate type. However, it can be useful for short term hacks. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103980 91177308-0d34-0410-b5e6-96231b3b80d8
116 lines
4.6 KiB
C++
116 lines
4.6 KiB
C++
//===- MCSectionCOFF.h - COFF 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 MCSectionCOFF class.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#ifndef LLVM_MC_MCSECTIONCOFF_H
|
|
#define LLVM_MC_MCSECTIONCOFF_H
|
|
|
|
#include "llvm/MC/MCSection.h"
|
|
|
|
namespace llvm {
|
|
|
|
/// MCSectionCOFF - This represents a section on Windows
|
|
class MCSectionCOFF : public MCSection {
|
|
// The memory for this string is stored in the same MCContext as *this.
|
|
StringRef SectionName;
|
|
|
|
/// Characteristics - This is the Characteristics field of a section,
|
|
// drawn from the enums below.
|
|
unsigned Characteristics;
|
|
|
|
/// Selection - This is the Selection field for the section symbol, if
|
|
/// it is a COMDAT section (Characteristics & IMAGE_SCN_LNK_COMDAT) != 0
|
|
int Selection;
|
|
|
|
private:
|
|
friend class MCContext;
|
|
MCSectionCOFF(StringRef Section, unsigned Characteristics,
|
|
int Selection, SectionKind K)
|
|
: MCSection(SV_COFF, K), SectionName(Section),
|
|
Characteristics(Characteristics), Selection (Selection) {
|
|
assert ((Characteristics & 0x00F00000) == 0 &&
|
|
"alignment must not be set upon section creation");
|
|
}
|
|
~MCSectionCOFF();
|
|
|
|
public:
|
|
/// ShouldOmitSectionDirective - Decides whether a '.section' directive
|
|
/// should be printed before the section name
|
|
bool ShouldOmitSectionDirective(StringRef Name, const MCAsmInfo &MAI) const;
|
|
|
|
//FIXME: all COFF enumerations/flags should be standardized into one place...
|
|
// Target/X86COFF.h doesn't seem right as COFF can be used for other targets,
|
|
// MC/WinCOFF.h maybe right as it isn't target or entity specific, and it is
|
|
// pretty low on the dependancy graph (is there any need to support non
|
|
// windows COFF?)
|
|
// here is good for section stuff, but others should go elsewhere
|
|
|
|
/// Valid section flags.
|
|
enum {
|
|
IMAGE_SCN_TYPE_NO_PAD = 0x00000008,
|
|
IMAGE_SCN_CNT_CODE = 0x00000020,
|
|
IMAGE_SCN_CNT_INITIALIZED_DATA = 0x00000040,
|
|
IMAGE_SCN_CNT_UNINITIALIZED_DATA = 0x00000080,
|
|
IMAGE_SCN_LNK_OTHER = 0x00000100,
|
|
IMAGE_SCN_LNK_INFO = 0x00000200,
|
|
IMAGE_SCN_LNK_REMOVE = 0x00000800,
|
|
IMAGE_SCN_LNK_COMDAT = 0x00001000,
|
|
IMAGE_SCN_MEM_FARDATA = 0x00008000,
|
|
IMAGE_SCN_MEM_PURGEABLE = 0x00020000,
|
|
IMAGE_SCN_MEM_16BIT = 0x00020000,
|
|
IMAGE_SCN_MEM_LOCKED = 0x00040000,
|
|
IMAGE_SCN_MEM_PRELOAD = 0x00080000,
|
|
/* these are handled elsewhere
|
|
IMAGE_SCN_ALIGN_1BYTES = 0x00100000,
|
|
IMAGE_SCN_ALIGN_2BYTES = 0x00200000,
|
|
IMAGE_SCN_ALIGN_4BYTES = 0x00300000,
|
|
IMAGE_SCN_ALIGN_8BYTES = 0x00400000,
|
|
IMAGE_SCN_ALIGN_16BYTES = 0x00500000,
|
|
IMAGE_SCN_ALIGN_32BYTES = 0x00600000,
|
|
IMAGE_SCN_ALIGN_64BYTES = 0x00700000,
|
|
*/
|
|
IMAGE_SCN_LNK_NRELOC_OVFL = 0x01000000,
|
|
IMAGE_SCN_MEM_DISCARDABLE = 0x02000000,
|
|
IMAGE_SCN_MEM_NOT_CACHED = 0x04000000,
|
|
IMAGE_SCN_MEM_NOT_PAGED = 0x08000000,
|
|
IMAGE_SCN_MEM_SHARED = 0x10000000,
|
|
IMAGE_SCN_MEM_EXECUTE = 0x20000000,
|
|
IMAGE_SCN_MEM_READ = 0x40000000,
|
|
IMAGE_SCN_MEM_WRITE = 0x80000000
|
|
};
|
|
|
|
enum {
|
|
IMAGE_COMDAT_SELECT_NODUPLICATES = 1,
|
|
IMAGE_COMDAT_SELECT_ANY,
|
|
IMAGE_COMDAT_SELECT_SAME_SIZE,
|
|
IMAGE_COMDAT_SELECT_EXACT_MATCH,
|
|
IMAGE_COMDAT_SELECT_ASSOCIATIVE,
|
|
IMAGE_COMDAT_SELECT_LARGEST
|
|
};
|
|
|
|
StringRef getSectionName() const { return SectionName; }
|
|
unsigned getCharacteristics() const { return Characteristics; }
|
|
int getSelection () const { return Selection; }
|
|
|
|
virtual void PrintSwitchToSection(const MCAsmInfo &MAI,
|
|
raw_ostream &OS) const;
|
|
|
|
static bool classof(const MCSection *S) {
|
|
return S->getVariant() == SV_COFF;
|
|
}
|
|
static bool classof(const MCSectionCOFF *) { return true; }
|
|
};
|
|
|
|
} // end namespace llvm
|
|
|
|
#endif
|