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Oracle Solaris 11.1 Linkers and Libraries Guide     Oracle Solaris 11.1 Information Library
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Part I Using the Link-Editor and Runtime Linker

1.  Introduction to the Oracle Solaris Link Editors

2.  Link-Editor

3.  Runtime Linker

4.  Shared Objects

Part II Quick Reference

5.  Link-Editor Quick Reference

Part III Advanced Topics

6.  Direct Bindings

7.  Building Objects to Optimize System Performance

8.  Mapfiles

9.  Interfaces and Versioning

10.  Establishing Dependencies with Dynamic String Tokens

11.  Extensibility Mechanisms

Part IV ELF Application Binary Interface

12.  Object File Format

File Format

Data Representation

ELF Header

ELF Identification

Data Encoding


Section Merging

Special Sections

Ancillary Section

COMDAT Section

Group Section

Capabilities Section

Hash Table Section

Move Section

Note Section

Relocation Sections

Relocation Calculations

SPARC: Relocations

SPARC: Relocation Types

64-bit SPARC: Relocation Types

x86: Relocations

32-bit x86: Relocation Types

x64: Relocation Types

String Table Section

Symbol Table Section

Symbol Values

Symbol Table Layout and Conventions

Symbol Sort Sections

Register Symbols

Syminfo Table Section

Versioning Sections

Version Definition Section

Version Dependency Section

Version Symbol Section

13.  Program Loading and Dynamic Linking

14.  Thread-Local Storage

Part V Appendices

A.  Linker and Libraries Updates and New Features

B.  System V Release 4 (Version 1) Mapfiles


String Table Section

String table sections hold null-terminated character sequences, commonly called strings. The object file uses these strings to represent symbol and section names. You reference a string as an index into the string table section.

The first byte, which is index zero, holds a null character. Likewise, a string table's last byte holds a null character, ensuring null termination for all strings. A string whose index is zero specifies either no name or a null name, depending on the context.

An empty string table section is permitted. The section header's sh_size member contains zero. Nonzero indexes are invalid for an empty string table.

A section header's sh_name member holds an index into the section header string table section. The section header string table is designated by the e_shstrndx member of the ELF header. The following figure shows a string table with 25 bytes and the strings associated with various indexes.

Figure 12-7 ELF String Table

image:ELF string table example.

The following table shows the strings of the string table that are shown in the preceding figure.

Table 12-18 ELF String Table Indexes

null string

As the example shows, a string table index can refer to any byte in the section. A string can appear more than once. References to substrings can exist. A single string can be referenced multiple times. Unreferenced strings also are allowed.