/* -*- mode: C++; c-basic-offset: 4; tab-width: 4 -*-
*
* Copyright (c) 2005-2006 Apple Computer, Inc. All rights reserved.
*
* @APPLE_LICENSE_HEADER_START@
*
* This file contains Original Code and/or Modifications of Original Code
* as defined in and that are subject to the Apple Public Source License
* Version 2.0 (the 'License'). You may not use this file except in
* compliance with the License. Please obtain a copy of the License at
* http://www.opensource.apple.com/apsl/ and read it before using this
* file.
*
* The Original Code and all software distributed under the License are
* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
* Please see the License for the specific language governing rights and
* limitations under the License.
*
* @APPLE_LICENSE_HEADER_END@
*/
#ifndef __OPAQUE_SECTION__
#define __OPAQUE_SECTION__
#include <vector>
#include "ObjectFile.h"
namespace opaque_section {
class Segment : public ObjectFile::Segment
{
public:
Segment(const char* name) { fName = name; }
virtual const char* getName() const { return fName; }
virtual bool isContentReadable() const { return true; }
virtual bool isContentWritable() const { return false; }
virtual bool isContentExecutable() const { return (strcmp(fName, "__TEXT") == 0); }
private:
const char* fName;
};
class Reader : public ObjectFile::Reader
{
public:
Reader(const char* segmentName, const char* sectionName, const char* path,
const uint8_t fileContent[], uint64_t fileLength, uint32_t ordinal, const char* symbolName=NULL);
virtual ~Reader();
void addSectionReference(uint8_t kind, uint64_t offsetInSection, const ObjectFile::Atom* targetAtom,
uint64_t offsetInTarget, const ObjectFile::Atom* fromTargetAtom=NULL, uint64_t offsetInFromTarget=0);
virtual const char* getPath() { return fPath; }
virtual time_t getModificationTime() { return 0; }
virtual DebugInfoKind getDebugInfoKind() { return ObjectFile::Reader::kDebugInfoNone; }
virtual std::vector<class ObjectFile::Atom*>& getAtoms() { return fAtoms; }
virtual std::vector<class ObjectFile::Atom*>* getJustInTimeAtomsFor(const char* name) { return NULL; }
virtual std::vector<Stab>* getStabs() { return NULL; }
private:
const char* fPath;
std::vector<class ObjectFile::Atom*> fAtoms;
};
class Reference : public ObjectFile::Reference
{
public:
Reference(uint8_t kind, uint64_t fixupOffset, const ObjectFile::Atom* target, uint64_t targetOffset,
const ObjectFile::Atom* fromTarget=NULL, uint64_t fromTargetOffset=0)
: fFixUpOffset(fixupOffset), fTarget(target), fTargetOffset(targetOffset), fKind(kind),
fFromTarget(fromTarget), fFromTargetOffset(fromTargetOffset) {}
virtual ~Reference() {}
virtual ObjectFile::Reference::TargetBinding getTargetBinding() const { return ObjectFile::Reference::kBoundDirectly; }
virtual ObjectFile::Reference::TargetBinding getFromTargetBinding() const{ return ObjectFile::Reference::kDontBind; }
virtual uint8_t getKind() const { return fKind; }
virtual uint64_t getFixUpOffset() const { return fFixUpOffset; }
virtual const char* getTargetName() const { return fTarget->getName(); }
virtual ObjectFile::Atom& getTarget() const { return *((ObjectFile::Atom*)fTarget); }
virtual uint64_t getTargetOffset() const { return fTargetOffset; }
virtual ObjectFile::Atom& getFromTarget() const { return *((ObjectFile::Atom*)fFromTarget); }
virtual const char* getFromTargetName() const { return fFromTarget->getName(); }
virtual uint64_t getFromTargetOffset() const { return fFromTargetOffset; }
virtual void setTarget(ObjectFile::Atom&, uint64_t offset) { throw "can't set target"; }
virtual void setFromTarget(ObjectFile::Atom&) { throw "can't set from target"; }
virtual const char* getDescription() const { return "opaque section reference"; }
private:
uint64_t fFixUpOffset;
const ObjectFile::Atom* fTarget;
uint64_t fTargetOffset;
uint8_t fKind;
const ObjectFile::Atom* fFromTarget;
uint64_t fFromTargetOffset;
};
class Atom : public ObjectFile::Atom {
public:
virtual ObjectFile::Reader* getFile() const { return &fOwner; }
virtual bool getTranslationUnitSource(const char** dir, const char** name) const { return false; }
virtual const char* getName() const { return fName; }
virtual const char* getDisplayName() const;
virtual Scope getScope() const { return ObjectFile::Atom::scopeLinkageUnit; }
virtual DefinitionKind getDefinitionKind() const { return kRegularDefinition; }
virtual SymbolTableInclusion getSymbolTableInclusion() const { return ObjectFile::Atom::kSymbolTableNotIn; }
virtual bool dontDeadStrip() const { return true; }
virtual bool isZeroFill() const { return false; }
virtual uint64_t getSize() const { return fFileLength; }
virtual std::vector<ObjectFile::Reference*>& getReferences() const { return (std::vector<ObjectFile::Reference*>&)(fReferences); }
virtual bool mustRemainInSection() const { return false; }
virtual const char* getSectionName() const { return fSectionName; }
virtual Segment& getSegment() const { return fSegment; }
virtual ObjectFile::Atom& getFollowOnAtom() const { return *((ObjectFile::Atom*)NULL); }
virtual uint32_t getOrdinal() const { return fOrdinal; }
virtual std::vector<ObjectFile::LineInfo>* getLineInfo() const { return NULL; }
virtual ObjectFile::Alignment getAlignment() const { return ObjectFile::Alignment(4); }
virtual void copyRawContent(uint8_t buffer[]) const;
virtual void setScope(Scope) { }
protected:
friend class Reader;
Atom(Reader& owner, Segment& segment, const char* sectionName,
const uint8_t fileContent[], uint64_t fileLength, uint32_t ordinal, const char* symbolName);
virtual ~Atom() {}
Reader& fOwner;
Segment& fSegment;
const char* fName;
const char* fSectionName;
const uint8_t* fFileContent;
uint32_t fOrdinal;
uint64_t fFileLength;
std::vector<ObjectFile::Reference*> fReferences;
};
Atom::Atom(Reader& owner, Segment& segment, const char* sectionName, const uint8_t fileContent[], uint64_t fileLength, uint32_t ordinal, const char* symbolName)
: fOwner(owner), fSegment(segment), fSectionName(sectionName), fFileContent(fileContent), fOrdinal(ordinal), fFileLength(fileLength)
{
if ( symbolName != NULL )
fName = strdup(symbolName);
else
asprintf((char**)&fName, "__section$%s%s", segment.getName(), sectionName);
}
Reader::Reader(const char* segmentName, const char* sectionName, const char* path, const uint8_t fileContent[],
uint64_t fileLength, uint32_t ordinal, const char* symbolName)
: fPath(path)
{
fAtoms.push_back(new Atom(*this, *(new Segment(segmentName)), strdup(sectionName), fileContent, fileLength, ordinal, symbolName));
}
Reader::~Reader()
{
}
void Reader::addSectionReference(uint8_t kind, uint64_t offsetInSection, const ObjectFile::Atom* targetAtom,
uint64_t offsetInTarget, const ObjectFile::Atom* fromTargetAtom, uint64_t offsetInFromTarget)
{
fAtoms[0]->getReferences().push_back(new Reference(kind, offsetInSection, targetAtom, offsetInTarget, fromTargetAtom, offsetInFromTarget));
}
const char* Atom::getDisplayName() const
{
static char name[64];
sprintf(name, "opaque section %s %s", fSegment.getName(), fSectionName);
return name;
}
void Atom::copyRawContent(uint8_t buffer[]) const
{
memcpy(buffer, fFileContent, fFileLength);
}
};
#endif // __OPAQUE_SECTION__