[apple/ld64.git] / src / ld / passes / tlvp.cpp

/* -*- mode: C++; c-basic-offset: 4; tab-width: 4 -*-
 *
 * Copyright (c) 2010 Apple 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@
 */


#include <stdint.h>
#include <math.h>
#include <unistd.h>
#include <dlfcn.h>

#include <vector>
#include <map>
#include <ext/hash_map>

#include "ld.hpp"
#include "tlvp.h"

namespace ld {
namespace passes {
namespace tlvp {

class File; // forward reference

class TLVEntryAtom : public ld::Atom {
public:
											TLVEntryAtom(ld::Internal& internal, const ld::Atom* target, bool weakImport)
				: ld::Atom(_s_section, ld::Atom::definitionRegular, ld::Atom::combineNever,
							ld::Atom::scopeLinkageUnit, ld::Atom::typeNonLazyPointer, 
							symbolTableNotIn, false, false, false, ld::Atom::Alignment(3)), 
				_fixup(0, ld::Fixup::k1of1, ld::Fixup::kindStoreTargetAddressLittleEndian64, target),
				_target(target)
					{ _fixup.weakImport = weakImport; internal.addAtom(*this); }

	virtual const ld::File*					file() const					{ return NULL; }
	virtual const char*						name() const					{ return _target->name(); }
	virtual uint64_t						size() const					{ return 8; }
	virtual uint64_t						objectAddress() const			{ return 0; }
	virtual void							copyRawContent(uint8_t buffer[]) const { }
	virtual void							setScope(Scope)					{ }
	virtual ld::Fixup::iterator				fixupsBegin() const				{ return &_fixup; }
	virtual ld::Fixup::iterator				fixupsEnd()	const 				{ return &((ld::Fixup*)&_fixup)[1]; }

private:
	mutable ld::Fixup						_fixup;
	const ld::Atom*							_target;
	
	static ld::Section						_s_section;
};

ld::Section TLVEntryAtom::_s_section("__DATA", "__thread_ptrs", ld::Section::typeTLVPointers);


static bool optimizable(const Options& opts, const ld::Atom* targetOfTLV)
{
	// cannot do LEA optimization if target is in another dylib
	if ( targetOfTLV->definition() == ld::Atom::definitionProxy ) 
		return false;
	if ( targetOfTLV->scope() == ld::Atom::scopeGlobal ) {	
		// cannot do LEA optimization if target is weak exported symbol
		if ( (targetOfTLV->definition() == ld::Atom::definitionRegular) && (targetOfTLV->combine() == ld::Atom::combineByName) )
			return false;
		// cannot do LEA optimization if target is interposable
		if ( opts.interposable(targetOfTLV->name()) ) 
			return false;
		// cannot do LEA optimization for flat-namespace
		if ( opts.nameSpace() != Options::kTwoLevelNameSpace ) 
			return false;
	}
	return true;
}

struct AtomByNameSorter
{
	 bool operator()(const ld::Atom* left, const ld::Atom* right)
	 {
		  return (strcmp(left->name(), right->name()) < 0);
	 }
};

struct TlVReferenceCluster
{
	const ld::Atom* targetOfTLV;
	ld::Fixup*		fixupWithTarget;
	ld::Fixup*		fixupWithTLVStore;
	bool			optimizable;
};

void doPass(const Options& opts, ld::Internal& internal)
{
	const bool log = false;
	
	// only make tlv section in final linked images
	if ( opts.outputKind() == Options::kObjectFile )
		return;

	// walk all atoms and fixups looking for TLV references and add them to list
	std::vector<TlVReferenceCluster>	references;
	for (std::vector<ld::Internal::FinalSection*>::iterator sit=internal.sections.begin(); sit != internal.sections.end(); ++sit) {
		ld::Internal::FinalSection* sect = *sit;
		for (std::vector<const ld::Atom*>::iterator ait=sect->atoms.begin(); ait != sect->atoms.end(); ++ait) {
			const ld::Atom* atom = *ait;
			TlVReferenceCluster ref;
			for (ld::Fixup::iterator fit = atom->fixupsBegin(), end=atom->fixupsEnd(); fit != end; ++fit) {
				if ( fit->firstInCluster() ) {
					ref.targetOfTLV = NULL;
					ref.fixupWithTarget = NULL;
					ref.fixupWithTLVStore = NULL;
				}
				switch ( fit->binding ) {
					case ld::Fixup::bindingsIndirectlyBound:
						ref.targetOfTLV = internal.indirectBindingTable[fit->u.bindingIndex];
						ref.fixupWithTarget = fit;
						break;
					case ld::Fixup::bindingDirectlyBound:
						ref.targetOfTLV = fit->u.target;
						ref.fixupWithTarget = fit;
						break;
                    default:
                        break;    
				}
				switch ( fit->kind ) {
					case ld::Fixup::kindStoreTargetAddressX86PCRel32TLVLoad:
					case ld::Fixup::kindStoreTargetAddressX86Abs32TLVLoad:
					case ld::Fixup::kindStoreX86PCRel32TLVLoad:
					case ld::Fixup::kindStoreX86Abs32TLVLoad:
						ref.fixupWithTLVStore = fit;
						break;
					default:
						break;
				}
				if ( fit->lastInCluster() && (ref.fixupWithTLVStore != NULL) ) {
					ref.optimizable = optimizable(opts, ref.targetOfTLV);
					if (log) fprintf(stderr, "found reference to TLV at %s+0x%X to %s\n", 
									atom->name(), ref.fixupWithTLVStore->offsetInAtom, ref.targetOfTLV->name());
					if ( ! opts.canUseThreadLocalVariables() ) {
						throwf("targeted OS version does not support use of thread local variables in %s", atom->name());
					}
					references.push_back(ref);
				}
			}
		}
	}
	
	// compute which TLV references will be weak_imports
	std::map<const ld::Atom*,bool>		weakImportMap;
	for(std::vector<TlVReferenceCluster>::iterator it=references.begin(); it != references.end(); ++it) {
		if ( !it->optimizable ) {
			// record weak_import attribute
			std::map<const ld::Atom*,bool>::iterator pos = weakImportMap.find(it->targetOfTLV);
			if ( pos == weakImportMap.end() ) {
				// target not in weakImportMap, so add
				weakImportMap[it->targetOfTLV] = it->fixupWithTarget->weakImport;
			}
			else {
				// target in weakImportMap, check for weakness mismatch
				if ( pos->second != it->fixupWithTarget->weakImport ) {
					// found mismatch
					switch ( opts.weakReferenceMismatchTreatment() ) {
						case Options::kWeakReferenceMismatchError:
							throwf("mismatching weak references for symbol: %s", it->targetOfTLV->name());
						case Options::kWeakReferenceMismatchWeak:
							pos->second = true;
							break;
						case Options::kWeakReferenceMismatchNonWeak:
							pos->second = false;
							break;
					}
				}
			}
		}
	}

	// create TLV pointers for TLV references that cannot be optimized
	std::map<const ld::Atom*,ld::Atom*> variableToPointerMap;
	for(std::map<const ld::Atom*,bool>::iterator it=weakImportMap.begin(); it != weakImportMap.end(); ++it) {
		std::map<const ld::Atom*,ld::Atom*>::iterator pos = variableToPointerMap.find(it->first);
		if ( pos == variableToPointerMap.end() ) {
			if (log) fprintf(stderr, "make TLV pointer for %s\n", it->first->name());
			if ( it->first->contentType() != ld::Atom::typeTLV )
				throwf("illegal thread local variable reference to regular symbol %s", it->first->name());
			TLVEntryAtom* tlvp = new TLVEntryAtom(internal, it->first, it->second);
			variableToPointerMap[it->first] = tlvp;
		}
	}

	// sort new tvlp atoms so links are consistent
	for (std::vector<ld::Internal::FinalSection*>::iterator sit=internal.sections.begin(); sit != internal.sections.end(); ++sit) {
		ld::Internal::FinalSection* sect = *sit;
		if ( sect->type() == ld::Section::typeTLVPointers ) {
			std::sort(sect->atoms.begin(), sect->atoms.end(), AtomByNameSorter());
		}
	}

	// update references to use TLV pointers or TLV object directly
	for(std::vector<TlVReferenceCluster>::iterator it=references.begin(); it != references.end(); ++it) {
		if ( it->optimizable ) {
			// change store to be LEA instead load (mov)
			if (log) fprintf(stderr, "optimizing load of TLV to %s into an LEA\n", it->targetOfTLV->name());
			it->fixupWithTLVStore->binding = ld::Fixup::bindingDirectlyBound;
			it->fixupWithTLVStore->u.target = it->targetOfTLV;
			switch ( it->fixupWithTLVStore->kind ) {
				case ld::Fixup::kindStoreTargetAddressX86PCRel32TLVLoad:
					it->fixupWithTLVStore->kind = ld::Fixup::kindStoreTargetAddressX86PCRel32TLVLoadNowLEA;
					break;
				case ld::Fixup::kindStoreTargetAddressX86Abs32TLVLoad:
					it->fixupWithTLVStore->kind = ld::Fixup::kindStoreTargetAddressX86Abs32TLVLoadNowLEA;
					break;
				case ld::Fixup::kindStoreX86PCRel32TLVLoad:
					it->fixupWithTLVStore->kind = ld::Fixup::kindStoreX86PCRel32TLVLoadNowLEA;
					break;
				case ld::Fixup::kindStoreX86Abs32TLVLoad:
					it->fixupWithTLVStore->kind = ld::Fixup::kindStoreX86Abs32TLVLoadNowLEA;
					break;
				default:
					assert(0 && "bad store kind for TLV optimization");
			}
		}
		else {
			// change target to be new TLV pointer atom
			if (log) fprintf(stderr, "updating load of TLV to %s to load from TLV pointer\n", it->targetOfTLV->name());
			const ld::Atom* tlvpAtom = variableToPointerMap[it->targetOfTLV];
			assert(tlvpAtom != NULL);
			it->fixupWithTarget->binding = ld::Fixup::bindingDirectlyBound;
			it->fixupWithTarget->u.target = tlvpAtom;
		}
	}
	
	
	// alter tlv definitions to have an offset as third field
	for (std::vector<ld::Internal::FinalSection*>::iterator sit=internal.sections.begin(); sit != internal.sections.end(); ++sit) {
		ld::Internal::FinalSection* sect = *sit;
		if ( sect->type() != ld::Section::typeTLVDefs ) 
			continue;
		for (std::vector<const ld::Atom*>::iterator ait=sect->atoms.begin();  ait != sect->atoms.end(); ++ait) {
			const ld::Atom* atom = *ait;
			for (ld::Fixup::iterator fit = atom->fixupsBegin(), end=atom->fixupsEnd(); fit != end; ++fit) {
				if ( fit->offsetInAtom != 0 ) {
					assert(fit->binding == ld::Fixup::bindingDirectlyBound && "thread variable def contains pointer to global");
					switch( fit->u.target->contentType() ) {
						case ld::Atom::typeTLVZeroFill:
						case ld::Atom::typeTLVInitialValue:
							switch ( fit->kind ) {
								case ld::Fixup::kindSetTargetAddress:
									fit->kind = ld::Fixup::kindSetTargetTLVTemplateOffset;
									break;
								case ld::Fixup::kindStoreTargetAddressLittleEndian32:
									fit->kind = ld::Fixup::kindSetTargetTLVTemplateOffsetLittleEndian32;
									break;
								case ld::Fixup::kindStoreTargetAddressLittleEndian64:
									fit->kind = ld::Fixup::kindSetTargetTLVTemplateOffsetLittleEndian64;
									break;
								default:
									assert(0 && "bad kind for target in tlv defs");
									break;
							}
							break;
						default:
							assert(0 && "wrong content type for target in tlv defs");
							break;
					}
				}
			}
		}
	}
	
}


} // namespace tlvp
} // namespace passes 
} // namespace ld
Commit	Line	Data
a645023d A	1	/* -- mode: C++; c-basic-offset: 4; tab-width: 4 --
	2	*
	3	* Copyright (c) 2010 Apple Inc. All rights reserved.
	4	*
	5	* @APPLE_LICENSE_HEADER_START@
	6	*
	7	* This file contains Original Code and/or Modifications of Original Code
	8	* as defined in and that are subject to the Apple Public Source License
	9	* Version 2.0 (the 'License'). You may not use this file except in
	10	* compliance with the License. Please obtain a copy of the License at
	11	* http://www.opensource.apple.com/apsl/ and read it before using this
	12	* file.
	13	*
	14	* The Original Code and all software distributed under the License are
	15	* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
	16	* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
	17	* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
	18	* FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
	19	* Please see the License for the specific language governing rights and
	20	* limitations under the License.
	21	*
	22	* @APPLE_LICENSE_HEADER_END@
	23	*/
	24
	25
	26	#include <stdint.h>
	27	#include <math.h>
	28	#include <unistd.h>
	29	#include <dlfcn.h>
	30
	31	#include <vector>
	32	#include <map>
	33	#include <ext/hash_map>
	34
	35	#include "ld.hpp"
	36	#include "tlvp.h"
	37
	38	namespace ld {
	39	namespace passes {
	40	namespace tlvp {
	41
	42	class File; // forward reference
	43
	44	class TLVEntryAtom : public ld::Atom {
	45	public:
	46	TLVEntryAtom(ld::Internal& internal, const ld::Atom* target, bool weakImport)
	47	: ld::Atom(_s_section, ld::Atom::definitionRegular, ld::Atom::combineNever,
	48	ld::Atom::scopeLinkageUnit, ld::Atom::typeNonLazyPointer,
	49	symbolTableNotIn, false, false, false, ld::Atom::Alignment(3)),
	50	_fixup(0, ld::Fixup::k1of1, ld::Fixup::kindStoreTargetAddressLittleEndian64, target),
	51	_target(target)
	52	{ _fixup.weakImport = weakImport; internal.addAtom(*this); }
	53
	54	virtual const ld::File* file() const { return NULL; }
a645023d A	55	virtual const char* name() const { return _target->name(); }
	56	virtual uint64_t size() const { return 8; }
	57	virtual uint64_t objectAddress() const { return 0; }
	58	virtual void copyRawContent(uint8_t buffer[]) const { }
	59	virtual void setScope(Scope) { }
	60	virtual ld::Fixup::iterator fixupsBegin() const { return &_fixup; }
	61	virtual ld::Fixup::iterator fixupsEnd() const { return &((ld::Fixup*)&_fixup)[1]; }
	62
	63	private:
	64	mutable ld::Fixup _fixup;
	65	const ld::Atom* _target;
	66
	67	static ld::Section _s_section;
	68	};
	69
	70	ld::Section TLVEntryAtom::_s_section("__DATA", "__thread_ptrs", ld::Section::typeTLVPointers);
	71
	72
	73	static bool optimizable(const Options& opts, const ld::Atom* targetOfTLV)
	74	{
	75	// cannot do LEA optimization if target is in another dylib
	76	if ( targetOfTLV->definition() == ld::Atom::definitionProxy )
	77	return false;
	78	if ( targetOfTLV->scope() == ld::Atom::scopeGlobal ) {
	79	// cannot do LEA optimization if target is weak exported symbol
	80	if ( (targetOfTLV->definition() == ld::Atom::definitionRegular) && (targetOfTLV->combine() == ld::Atom::combineByName) )
	81	return false;
	82	// cannot do LEA optimization if target is interposable
	83	if ( opts.interposable(targetOfTLV->name()) )
	84	return false;
	85	// cannot do LEA optimization for flat-namespace
	86	if ( opts.nameSpace() != Options::kTwoLevelNameSpace )
	87	return false;
	88	}
	89	return true;
	90	}
	91
	92	struct AtomByNameSorter
	93	{
	94	bool operator()(const ld::Atom* left, const ld::Atom* right)
	95	{
	96	return (strcmp(left->name(), right->name()) < 0);
	97	}
	98	};
	99
	100	struct TlVReferenceCluster
	101	{
	102	const ld::Atom* targetOfTLV;
	103	ld::Fixup* fixupWithTarget;
	104	ld::Fixup* fixupWithTLVStore;
	105	bool optimizable;
	106	};
	107
	108	void doPass(const Options& opts, ld::Internal& internal)
	109	{
	110	const bool log = false;
	111
	112	// only make tlv section in final linked images
	113	if ( opts.outputKind() == Options::kObjectFile )
	114	return;
	115
	116	// walk all atoms and fixups looking for TLV references and add them to list
	117	std::vector<TlVReferenceCluster> references;
	118	for (std::vector<ld::Internal::FinalSection*>::iterator sit=internal.sections.begin(); sit != internal.sections.end(); ++sit) {
119	ld::Internal::FinalSection* sect = *sit;
120	for (std::vector<const ld::Atom*>::iterator ait=sect->atoms.begin(); ait != sect->atoms.end(); ++ait) {
121	const ld::Atom* atom = *ait;
122	TlVReferenceCluster ref;
123	for (ld::Fixup::iterator fit = atom->fixupsBegin(), end=atom->fixupsEnd(); fit != end; ++fit) {
124	if ( fit->firstInCluster() ) {
125	ref.targetOfTLV = NULL;
126	ref.fixupWithTarget = NULL;
127	ref.fixupWithTLVStore = NULL;
128	}
129	switch ( fit->binding ) {
130	case ld::Fixup::bindingsIndirectlyBound:
131	ref.targetOfTLV = internal.indirectBindingTable[fit->u.bindingIndex];
132	ref.fixupWithTarget = fit;
133	break;
134	case ld::Fixup::bindingDirectlyBound:
135	ref.targetOfTLV = fit->u.target;
136	ref.fixupWithTarget = fit;
137	break;
138	default:
139	break;
140	}
141	switch ( fit->kind ) {
142	case ld::Fixup::kindStoreTargetAddressX86PCRel32TLVLoad:
143	case ld::Fixup::kindStoreTargetAddressX86Abs32TLVLoad:
144	case ld::Fixup::kindStoreX86PCRel32TLVLoad:
145	case ld::Fixup::kindStoreX86Abs32TLVLoad:
146	ref.fixupWithTLVStore = fit;
147	break;
148	default:
149	break;
150	}
151	if ( fit->lastInCluster() && (ref.fixupWithTLVStore != NULL) ) {
152	ref.optimizable = optimizable(opts, ref.targetOfTLV);
153	if (log) fprintf(stderr, "found reference to TLV at %s+0x%X to %s\n",
154	atom->name(), ref.fixupWithTLVStore->offsetInAtom, ref.targetOfTLV->name());
155	if ( ! opts.canUseThreadLocalVariables() ) {
156	throwf("targeted OS version does not support use of thread local variables in %s", atom->name());
157	}
158	references.push_back(ref);
159	}
160	}
161	}
162	}
163
164	// compute which TLV references will be weak_imports
165	std::map<const ld::Atom*,bool> weakImportMap;
166	for(std::vector<TlVReferenceCluster>::iterator it=references.begin(); it != references.end(); ++it) {
167	if ( !it->optimizable ) {
168	// record weak_import attribute
169	std::map<const ld::Atom*,bool>::iterator pos = weakImportMap.find(it->targetOfTLV);
170	if ( pos == weakImportMap.end() ) {
171	// target not in weakImportMap, so add
172	weakImportMap[it->targetOfTLV] = it->fixupWithTarget->weakImport;
a645023d A	173	}
	174	else {
	175	// target in weakImportMap, check for weakness mismatch
	176	if ( pos->second != it->fixupWithTarget->weakImport ) {
	177	// found mismatch
	178	switch ( opts.weakReferenceMismatchTreatment() ) {
	179	case Options::kWeakReferenceMismatchError:
	180	throwf("mismatching weak references for symbol: %s", it->targetOfTLV->name());
	181	case Options::kWeakReferenceMismatchWeak:
	182	pos->second = true;
	183	break;
	184	case Options::kWeakReferenceMismatchNonWeak:
	185	pos->second = false;
	186	break;
	187	}
	188	}
	189	}
	190	}
	191	}
	192
	193	// create TLV pointers for TLV references that cannot be optimized
	194	std::map<const ld::Atom,ld::Atom> variableToPointerMap;
	195	for(std::map<const ld::Atom*,bool>::iterator it=weakImportMap.begin(); it != weakImportMap.end(); ++it) {
	196	std::map<const ld::Atom,ld::Atom>::iterator pos = variableToPointerMap.find(it->first);
	197	if ( pos == variableToPointerMap.end() ) {
	198	if (log) fprintf(stderr, "make TLV pointer for %s\n", it->first->name());
	199	if ( it->first->contentType() != ld::Atom::typeTLV )
	200	throwf("illegal thread local variable reference to regular symbol %s", it->first->name());
	201	TLVEntryAtom* tlvp = new TLVEntryAtom(internal, it->first, it->second);
	202	variableToPointerMap[it->first] = tlvp;
	203	}
	204	}
	205
	206	// sort new tvlp atoms so links are consistent
	207	for (std::vector<ld::Internal::FinalSection*>::iterator sit=internal.sections.begin(); sit != internal.sections.end(); ++sit) {
	208	ld::Internal::FinalSection* sect = *sit;
	209	if ( sect->type() == ld::Section::typeTLVPointers ) {
	210	std::sort(sect->atoms.begin(), sect->atoms.end(), AtomByNameSorter());
	211	}
	212	}
	213
	214	// update references to use TLV pointers or TLV object directly
	215	for(std::vector<TlVReferenceCluster>::iterator it=references.begin(); it != references.end(); ++it) {
	216	if ( it->optimizable ) {
	217	// change store to be LEA instead load (mov)
	218	if (log) fprintf(stderr, "optimizing load of TLV to %s into an LEA\n", it->targetOfTLV->name());
	219	it->fixupWithTLVStore->binding = ld::Fixup::bindingDirectlyBound;
	220	it->fixupWithTLVStore->u.target = it->targetOfTLV;
	221	switch ( it->fixupWithTLVStore->kind ) {
	222	case ld::Fixup::kindStoreTargetAddressX86PCRel32TLVLoad:
	223	it->fixupWithTLVStore->kind = ld::Fixup::kindStoreTargetAddressX86PCRel32TLVLoadNowLEA;
	224	break;
	225	case ld::Fixup::kindStoreTargetAddressX86Abs32TLVLoad:
	226	it->fixupWithTLVStore->kind = ld::Fixup::kindStoreTargetAddressX86Abs32TLVLoadNowLEA;
	227	break;
	228	case ld::Fixup::kindStoreX86PCRel32TLVLoad:
	229	it->fixupWithTLVStore->kind = ld::Fixup::kindStoreX86PCRel32TLVLoadNowLEA;
	230	break;
	231	case ld::Fixup::kindStoreX86Abs32TLVLoad:
	232	it->fixupWithTLVStore->kind = ld::Fixup::kindStoreX86Abs32TLVLoadNowLEA;
	233	break;
	234	default:
	235	assert(0 && "bad store kind for TLV optimization");
	236	}
237	}
238	else {
239	// change target to be new TLV pointer atom
240	if (log) fprintf(stderr, "updating load of TLV to %s to load from TLV pointer\n", it->targetOfTLV->name());
241	const ld::Atom* tlvpAtom = variableToPointerMap[it->targetOfTLV];
242	assert(tlvpAtom != NULL);
243	it->fixupWithTarget->binding = ld::Fixup::bindingDirectlyBound;
244	it->fixupWithTarget->u.target = tlvpAtom;
245	}
246	}
247
248
249
250	// alter tlv definitions to have an offset as third field
251	for (std::vector<ld::Internal::FinalSection*>::iterator sit=internal.sections.begin(); sit != internal.sections.end(); ++sit) {
252	ld::Internal::FinalSection* sect = *sit;
253	if ( sect->type() != ld::Section::typeTLVDefs )
254	continue;
255	for (std::vector<const ld::Atom*>::iterator ait=sect->atoms.begin(); ait != sect->atoms.end(); ++ait) {
256	const ld::Atom* atom = *ait;
257	for (ld::Fixup::iterator fit = atom->fixupsBegin(), end=atom->fixupsEnd(); fit != end; ++fit) {
258	if ( fit->offsetInAtom != 0 ) {
259	assert(fit->binding == ld::Fixup::bindingDirectlyBound && "thread variable def contains pointer to global");
260	switch( fit->u.target->contentType() ) {
261	case ld::Atom::typeTLVZeroFill:
262	case ld::Atom::typeTLVInitialValue:
263	switch ( fit->kind ) {
264	case ld::Fixup::kindSetTargetAddress:
265	fit->kind = ld::Fixup::kindSetTargetTLVTemplateOffset;
266	break;
267	case ld::Fixup::kindStoreTargetAddressLittleEndian32:
268	fit->kind = ld::Fixup::kindSetTargetTLVTemplateOffsetLittleEndian32;
269	break;
270	case ld::Fixup::kindStoreTargetAddressLittleEndian64:
271	fit->kind = ld::Fixup::kindSetTargetTLVTemplateOffsetLittleEndian64;
272	break;
273	default:
274	assert(0 && "bad kind for target in tlv defs");
275	break;
276	}
277	break;
278	default:
279	assert(0 && "wrong content type for target in tlv defs");
280	break;
281	}
282	}
283	}
284	}
285	}
286
287	}
288
289
290
291	} // namespace tlvp
292	} // namespace passes
293	} // namespace ld