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| Next: <a href="Operators.html#Operators" accesskey="n" rel="next">Operators</a>, Up: <a href="Integer-Exprs.html#Integer-Exprs" accesskey="u" rel="up">Integer Exprs</a> [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="AS-Index.html#AS-Index" title="Index" rel="index">Index</a>]</p> |
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| <a name="Arguments-1"></a> |
| <h4 class="subsection">6.2.1 Arguments</h4> |
| |
| <a name="index-expression-arguments"></a> |
| <a name="index-arguments-in-expressions"></a> |
| <a name="index-operands-in-expressions"></a> |
| <a name="index-arithmetic-operands"></a> |
| <p><em>Arguments</em> are symbols, numbers or subexpressions. In other |
| contexts arguments are sometimes called “arithmetic operands”. In |
| this manual, to avoid confusing them with the “instruction operands” of |
| the machine language, we use the term “argument” to refer to parts of |
| expressions only, reserving the word “operand” to refer only to machine |
| instruction operands. |
| </p> |
| <p>Symbols are evaluated to yield {<var>section</var> <var>NNN</var>} where |
| <var>section</var> is one of text, data, bss, absolute, |
| or undefined. <var>NNN</var> is a signed, 2’s complement 32 bit |
| integer. |
| </p> |
| <p>Numbers are usually integers. |
| </p> |
| <p>A number can be a flonum or bignum. In this case, you are warned |
| that only the low order 32 bits are used, and <code>as</code> pretends |
| these 32 bits are an integer. You may write integer-manipulating |
| instructions that act on exotic constants, compatible with other |
| assemblers. |
| </p> |
| <a name="index-subexpressions"></a> |
| <p>Subexpressions are a left parenthesis ‘<samp>(</samp>’ followed by an integer |
| expression, followed by a right parenthesis ‘<samp>)</samp>’; or a prefix |
| operator followed by an argument. |
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