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| <h3 class="section">1.1 Structure of this Manual</h3> |
| |
| <p><a name="index-manual_002c-structure-and-purpose-21"></a>This manual is intended to describe what you need to know to use |
| <span class="sc">gnu</span> <samp><span class="command">as</span></samp>. We cover the syntax expected in source files, including |
| notation for symbols, constants, and expressions; the directives that |
| <samp><span class="command">as</span></samp> understands; and of course how to invoke <samp><span class="command">as</span></samp>. |
| |
| <p>This manual also describes some of the machine-dependent features of |
| various flavors of the assembler. |
| |
| <p><a name="index-machine-instructions-_0028not-covered_0029-22"></a>On the other hand, this manual is <em>not</em> intended as an introduction |
| to programming in assembly language—let alone programming in general! |
| In a similar vein, we make no attempt to introduce the machine |
| architecture; we do <em>not</em> describe the instruction set, standard |
| mnemonics, registers or addressing modes that are standard to a |
| particular architecture. |
| You may want to consult the manufacturer's |
| machine architecture manual for this information. |
| |
| <!-- I think this is premature-doc@cygnus.com, 17jan1991 --> |
| <!-- There used to be a section "Terminology" here, which defined --> |
| <!-- "contents", "byte", "word", and "long". Defining "word" to any --> |
| <!-- particular size is confusing when the .word directive may generate 16 --> |
| <!-- bits on one machine and 32 bits on another; in general, for the user --> |
| <!-- version of this manual, none of these terms seem essential to define. --> |
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