mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-08-25 16:29:20 +00:00
implement support for uniquing MachO sections.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78866 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
parent
9bf0b9bd44
commit
5dc47ff039
@ -20,6 +20,7 @@
|
||||
namespace llvm {
|
||||
class Mangler;
|
||||
class MCSection;
|
||||
class MCSectionMachO;
|
||||
class MCContext;
|
||||
class GlobalValue;
|
||||
class StringRef;
|
||||
@ -28,6 +29,9 @@ namespace llvm {
|
||||
|
||||
class TargetLoweringObjectFile {
|
||||
MCContext *Ctx;
|
||||
|
||||
TargetLoweringObjectFile(const TargetLoweringObjectFile&); // DO NOT IMPLEMENT
|
||||
void operator=(const TargetLoweringObjectFile&); // DO NOT IMPLEMENT
|
||||
protected:
|
||||
|
||||
TargetLoweringObjectFile();
|
||||
@ -225,6 +229,8 @@ public:
|
||||
|
||||
|
||||
class TargetLoweringObjectFileMachO : public TargetLoweringObjectFile {
|
||||
mutable void *UniquingMap;
|
||||
|
||||
const MCSection *CStringSection;
|
||||
const MCSection *UStringSection;
|
||||
const MCSection *TextCoalSection;
|
||||
@ -236,6 +242,8 @@ class TargetLoweringObjectFileMachO : public TargetLoweringObjectFile {
|
||||
const MCSection *EightByteConstantSection;
|
||||
const MCSection *SixteenByteConstantSection;
|
||||
public:
|
||||
TargetLoweringObjectFileMachO() : UniquingMap(0) {}
|
||||
~TargetLoweringObjectFileMachO();
|
||||
|
||||
virtual void Initialize(MCContext &Ctx, const TargetMachine &TM);
|
||||
|
||||
@ -257,16 +265,17 @@ public:
|
||||
|
||||
/// getMachOSection - Return the MCSection for the specified mach-o section.
|
||||
/// This requires the operands to be valid.
|
||||
const MCSection *getMachOSection(const StringRef &Segment,
|
||||
const StringRef &Section,
|
||||
unsigned TypeAndAttributes,
|
||||
SectionKind K) const {
|
||||
const MCSectionMachO *getMachOSection(const StringRef &Segment,
|
||||
const StringRef &Section,
|
||||
unsigned TypeAndAttributes,
|
||||
SectionKind K) const {
|
||||
return getMachOSection(Segment, Section, TypeAndAttributes, 0, K);
|
||||
}
|
||||
const MCSection *getMachOSection(const StringRef &Segment,
|
||||
const StringRef &Section,
|
||||
unsigned TypeAndAttributes,
|
||||
unsigned Reserved2, SectionKind K) const;
|
||||
const MCSectionMachO *getMachOSection(const StringRef &Segment,
|
||||
const StringRef &Section,
|
||||
unsigned TypeAndAttributes,
|
||||
unsigned Reserved2,
|
||||
SectionKind K) const;
|
||||
|
||||
/// getTextCoalSection - Return the "__TEXT,__textcoal_nt" section we put weak
|
||||
/// symbols into.
|
||||
|
@ -24,6 +24,7 @@
|
||||
#include "llvm/Target/TargetMachine.h"
|
||||
#include "llvm/Target/TargetOptions.h"
|
||||
#include "llvm/Support/Mangler.h"
|
||||
#include "llvm/ADT/SmallString.h"
|
||||
#include "llvm/ADT/StringExtras.h"
|
||||
using namespace llvm;
|
||||
|
||||
@ -129,7 +130,6 @@ SectionKind TargetLoweringObjectFile::getKindForGlobal(const GlobalValue *GV,
|
||||
if (GVar == 0)
|
||||
return SectionKind::getText();
|
||||
|
||||
|
||||
// Handle thread-local data first.
|
||||
if (GVar->isThreadLocal()) {
|
||||
if (isSuitableForBSS(GVar))
|
||||
@ -509,17 +509,40 @@ getSectionForConstant(SectionKind Kind) const {
|
||||
// MachO
|
||||
//===----------------------------------------------------------------------===//
|
||||
|
||||
typedef StringMap<const MCSectionMachO*> MachOUniqueMapTy;
|
||||
|
||||
const MCSection *TargetLoweringObjectFileMachO::
|
||||
TargetLoweringObjectFileMachO::~TargetLoweringObjectFileMachO() {
|
||||
// If we have the MachO uniquing map, free it.
|
||||
delete (MachOUniqueMapTy*)UniquingMap;
|
||||
}
|
||||
|
||||
|
||||
const MCSectionMachO *TargetLoweringObjectFileMachO::
|
||||
getMachOSection(const StringRef &Segment, const StringRef &Section,
|
||||
unsigned TypeAndAttributes,
|
||||
unsigned Reserved2, SectionKind Kind) const {
|
||||
// FIXME: UNIQUE HERE.
|
||||
//if (MCSection *S = getContext().GetSection(Name))
|
||||
// return S;
|
||||
// We unique sections by their segment/section pair. The returned section
|
||||
// may not have the same flags as the requested section, if so this should be
|
||||
// diagnosed by the client as an error.
|
||||
|
||||
return MCSectionMachO::Create(Segment, Section, TypeAndAttributes, Reserved2,
|
||||
Kind, getContext());
|
||||
// Create the map if it doesn't already exist.
|
||||
if (UniquingMap == 0)
|
||||
UniquingMap = new MachOUniqueMapTy();
|
||||
MachOUniqueMapTy &Map = *(MachOUniqueMapTy*)UniquingMap;
|
||||
|
||||
// Form the name to look up.
|
||||
SmallString<64> Name;
|
||||
Name.append(Segment.begin(), Segment.end());
|
||||
Name.push_back(',');
|
||||
Name.append(Section.begin(), Section.end());
|
||||
|
||||
// Do the lookup, if we have a hit, return it.
|
||||
const MCSectionMachO *&Entry = Map[StringRef(Name.data(), Name.size())];
|
||||
if (Entry) return Entry;
|
||||
|
||||
// Otherwise, return a new section.
|
||||
return Entry = MCSectionMachO::Create(Segment, Section, TypeAndAttributes,
|
||||
Reserved2, Kind, getContext());
|
||||
}
|
||||
|
||||
|
||||
|
Loading…
Reference in New Issue
Block a user