Linkers and Loaders

By: John R. Levine

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Paperback | 25 October 1999

At a Glance

Paperback
274 Pages

Dimensions(cm)
23.5 x 19.05 x 1.47

Paperback

$153.75

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Whatever your programming language, whatever your platform, you probably tap into linker and loader functions all the time. But do you know how to use them to their greatest possible advantage? Only now, with the publication of Linkers & Loaders, is there an authoritative book devoted entirely to these deep-seated compile-time and run-time processes.
The book begins with a detailed and comparative account of linking and loading that illustrates the differences among various compilers and operating systems. On top of this foundation, the author presents clear practical advice to help you create faster, cleaner code. You'll learn to avoid the pitfalls associated with Windows DLLs, take advantage of the space-saving, performance-improving techniques supported by many modern linkers, make the best use of the UNIX ELF library scheme, and much more. If you're serious about programming, you'll devour this unique guide to one of the field's least understood topics. Linkers & Loaders is also an ideal supplementary text for compiler and operating systems courses.

*Includes a linker construction project written in Perl, with project files available for download. *Covers dynamic linking in Windows, UNIX, Linux, BeOS, and other operating systems.
*Explains the Java linking model and how it figures in network applets and extensible Java code.
*Helps you write more elegant and effective code, and build applications that compile, load, and run more efficiently.

Industry Reviews

"I enjoyed reading this useful overview of the techniques and challenges of implementing linkers and loaders. While most of the examples are focused on three computer architectures that are widely used today, there are also many side comments about interesting and quirky computer architectures of the past. I can tell from these war stories that the author really has been there himself and survived to tell the tale."--Guy Steele

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Non-Fiction Computing & I.T.Computer Programming & Software Development Compilers & Interpreters Operating Systems Engineering & Technology Environmental Science Sanitary & Municipal Engineering Waste Treatment & Disposal Hazardous Waste Treatment & Disposal Software Engineering

Preface	p. xi
Linking and Loading	p. 1
What Do Linkers and Loaders Do?	p. 1
Address Binding: A Historical Perspective	p. 1
Linking vs. Loading	p. 5
Compiler Drivers	p. 10
Linking: A True-Life Example	p. 12
Exercises	p. 17
Architectural Issues	p. 19
Application Binary Interfaces	p. 20
Memory Addresses	p. 20
Address Formation	p. 22
Instruction Formats	p. 23
Procedure Calls and Addressability	p. 24
Data and Instruction References	p. 28
Paging and Virtual Memory	p. 34
Intel 386 Segmentation	p. 41
Embedded Architectures	p. 43
Exercises	p. 45
Object Files	p. 47
What Goes into an Object File?	p. 47
The Null Object Format: DOS COM Files	p. 49
Code Sections: UNIX a.out Files	p. 50
Relocation: DOS EXE Files	p. 56
Symbols and Relocation	p. 58
Relocatable a.out	p. 58
UNIX ELF	p. 62
IBM 360 Object Format	p. 71
Microsoft Portable Executable Format	p. 75
Intel/Microsoft OMF Files	p. 84
Comparison of Object Formats	p. 90
Exercises	p. 90
Project	p. 90
Storage Allocation	p. 93
Segments and Addresses	p. 93
Simple Storage Layout	p. 94
Multiple-Segment Types	p. 96
Segment and Page Alignment	p. 96
Common Blocks and Other Special Segments	p. 98
Linker Control Scripts	p. 107
Storage Allocation in Practice	p. 108
Exercises	p. 114
Project	p. 115
Symbol Management	p. 117
Binding and Name Resolution	p. 117
Symbol Table Formats	p. 118
Name Mangling	p. 124
Weak External and Other Kinds of Symbols	p. 129
Maintaining Debugging Information	p. 129
Exercises	p. 132
Project	p. 133
Libraries	p. 135
Purpose of Libraries	p. 135
Library Formats	p. 136
Creating Libraries	p. 141
Searching Libraries	p. 142
Performance Issues	p. 144
Weak External Symbols	p. 144
Exercises	p. 145
Project	p. 146
Relocation	p. 149
Hardware and Software Relocation	p. 150
Link-Time and Load-Time Relocation	p. 151
Symbol and Segment Relocation	p. 151
Basic Relocation Techniques	p. 153
Relinkable and Relocatable Output Formats	p. 159
Other Relocation Formats	p. 160
Relocation Special Cases	p. 162
Exercises	p. 163
Project	p. 164
Loading and Overlays	p. 167
Basic Loading	p. 167
Basic Loading, with Relocation	p. 168
Position-Independent Code	p. 169
Bootstrap Loading	p. 176
Tree-Structured Overlays	p. 177
Exercises	p. 184
Project	p. 185
Shared Libraries	p. 187
Binding Time	p. 188
Shared Libraries in Practice	p. 190
Address Space Management	p. 190
Structure of Shared Libraries	p. 192
Creating Shared Libraries	p. 192
Linking with Shared Libraries	p. 197
Running with Shared Libraries	p. 197
The malloc Hack and Other Shared-Library Problems	p. 199
Exercises	p. 202
Project	p. 203
Dynamic Linking and Loading	p. 205
ELF Dynamic Linking	p. 206
Contents of an ELF File	p. 206
Loading a Dynamically Linked Program	p. 210
Lazy Procedure Linkage with the PLT	p. 213
Other Peculiarities of Dynamic Linking	p. 215
Dynamic Loading at Run Time	p. 216
Microsoft Dynamic-Link Libraries	p. 217
OSF/1 Pseudo-Static Shared Libraries	p. 222
Making Shared Libraries Fast	p. 223
Comparison of Dynamic Linking Approaches	p. 224
Exercises	p. 226
Project	p. 226
Advanced Techniques	p. 229
Techniques for C++	p. 229
Incremental Linking and Relinking	p. 233
Link-Time Garbage Collection	p. 235
Link-Time Optimization	p. 237
Link-Time Code Generation	p. 238
The Java Linking Model	p. 241
Exercises	p. 244
Project	p. 245
References	p. 246
Index	p. 249
Table of Contents provided by Syndetics. All Rights Reserved.

Linkers and Loaders

At a Glance

Paperback

Industry Reviews

Shipping

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Defective items

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