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| <h4 class="subsection">9.39.3 Assembler Directives for the Z8000</h4> |
| |
| <p><a name="index-Z8000-directives-1872"></a><a name="index-directives_002c-Z8000-1873"></a>The Z8000 port of as includes additional assembler directives, |
| for compatibility with other Z8000 assemblers. These do not begin with |
| ‘<samp><span class="samp">.</span></samp>’ (unlike the ordinary as directives). |
| |
| |
| <a name="index-segm-1874"></a> |
| <dl><dt><code>segm</code><dd><a name="index-g_t_002ez8001-1875"></a><dt><code>.z8001</code><dd>Generate code for the segmented Z8001. |
| |
| <p><a name="index-unsegm-1876"></a><br><dt><code>unsegm</code><dd><a name="index-g_t_002ez8002-1877"></a><dt><code>.z8002</code><dd>Generate code for the unsegmented Z8002. |
| |
| <p><a name="index-name-1878"></a><br><dt><code>name</code><dd>Synonym for <code>.file</code> |
| |
| <p><a name="index-global-1879"></a><br><dt><code>global</code><dd>Synonym for <code>.global</code> |
| |
| <p><a name="index-wval-1880"></a><br><dt><code>wval</code><dd>Synonym for <code>.word</code> |
| |
| <p><a name="index-lval-1881"></a><br><dt><code>lval</code><dd>Synonym for <code>.long</code> |
| |
| <p><a name="index-bval-1882"></a><br><dt><code>bval</code><dd>Synonym for <code>.byte</code> |
| |
| <p><a name="index-sval-1883"></a><br><dt><code>sval</code><dd>Assemble a string. <code>sval</code> expects one string literal, delimited by |
| single quotes. It assembles each byte of the string into consecutive |
| addresses. You can use the escape sequence ‘<samp><span class="samp">%</span><var>xx</var></samp>’ (where |
| <var>xx</var> represents a two-digit hexadecimal number) to represent the |
| character whose <span class="sc">ascii</span> value is <var>xx</var>. Use this feature to |
| describe single quote and other characters that may not appear in string |
| literals as themselves. For example, the C statement ‘<samp><span class="samp">char *a = "he said \"it's 50% off\"";</span></samp>’<!-- /@w --> is represented in Z8000 assembly language |
| (shown with the assembler output in hex at the left) as |
| |
| <pre class="smallexample"> 68652073 sval 'he said %22it%27s 50%25 off%22%00' |
| 61696420 |
| 22697427 |
| 73203530 |
| 25206F66 |
| 662200 |
| </pre> |
| <p><a name="index-rsect-1884"></a><br><dt><code>rsect</code><dd>synonym for <code>.section</code> |
| |
| <p><a name="index-block-1885"></a><br><dt><code>block</code><dd>synonym for <code>.space</code> |
| |
| <p><a name="index-even-1886"></a><br><dt><code>even</code><dd>special case of <code>.align</code>; aligns output to even byte boundary. |
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