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<h1>/home/mandrake/rpm/BUILD/sc68-2.2.1/emu68/inst68.h File Reference</h1>68k arithmetic and logical instruction emulation.
<a href="#_details">More...</a>
<p>
<code>#include "<a class="el" href="type68_8h_source.html">emu68/type68.h</a>"</code><br>
<p>
<a href="inst68_8h_source.html">Go to the source code of this file.</a><table border="0" cellpadding="0" cellspacing="0">
<tr><td></td></tr>
<tr><td colspan="2"><br><h2>Functions</h2></td></tr>
<tr><td colspan="2"><div class="groupHeader">Arithmetic instructions.</div></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="el" href="type68_8h.html#0ce6887c26c1c49ad3be5710dd42bfd6">s32</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="inst68_8h.html#fe25b6001cb9c19b6c7374290a07297d">add68</a> (<a class="el" href="type68_8h.html#0ce6887c26c1c49ad3be5710dd42bfd6">s32</a> a, <a class="el" href="type68_8h.html#0ce6887c26c1c49ad3be5710dd42bfd6">s32</a> b, <a class="el" href="type68_8h.html#0ce6887c26c1c49ad3be5710dd42bfd6">s32</a> c)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Addition. <a href="#fe25b6001cb9c19b6c7374290a07297d"></a><br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="el" href="type68_8h.html#0ce6887c26c1c49ad3be5710dd42bfd6">s32</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="inst68_8h.html#6fd001f5b3be1db144749719a0f30e89">sub68</a> (<a class="el" href="type68_8h.html#0ce6887c26c1c49ad3be5710dd42bfd6">s32</a> a, <a class="el" href="type68_8h.html#0ce6887c26c1c49ad3be5710dd42bfd6">s32</a> b, <a class="el" href="type68_8h.html#0ce6887c26c1c49ad3be5710dd42bfd6">s32</a> c)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Subtraction. <a href="#6fd001f5b3be1db144749719a0f30e89"></a><br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="el" href="type68_8h.html#0ce6887c26c1c49ad3be5710dd42bfd6">s32</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="inst68_8h.html#033e1db23be6b2abac08a8f9b04e8778">muls68</a> (<a class="el" href="type68_8h.html#0ce6887c26c1c49ad3be5710dd42bfd6">s32</a> a, <a class="el" href="type68_8h.html#0ce6887c26c1c49ad3be5710dd42bfd6">s32</a> b)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Signed multiplication. <a href="#033e1db23be6b2abac08a8f9b04e8778"></a><br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="el" href="type68_8h.html#0ce6887c26c1c49ad3be5710dd42bfd6">s32</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="inst68_8h.html#6912daba1274268ce61a2dac3798c0df">mulu68</a> (<a class="el" href="type68_8h.html#10e94b422ef0c20dcdec20d31a1f5049">u32</a> a, <a class="el" href="type68_8h.html#10e94b422ef0c20dcdec20d31a1f5049">u32</a> b)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Unsigned multiplication. <a href="#6912daba1274268ce61a2dac3798c0df"></a><br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="el" href="type68_8h.html#0ce6887c26c1c49ad3be5710dd42bfd6">s32</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="inst68_8h.html#3013f879d00ec945c0d03268c33d9b2d">divs68</a> (<a class="el" href="type68_8h.html#0ce6887c26c1c49ad3be5710dd42bfd6">s32</a> a, <a class="el" href="type68_8h.html#0ce6887c26c1c49ad3be5710dd42bfd6">s32</a> b)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Signed divide. <a href="#3013f879d00ec945c0d03268c33d9b2d"></a><br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="el" href="type68_8h.html#0ce6887c26c1c49ad3be5710dd42bfd6">s32</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="inst68_8h.html#0efc6474db1d3ac319c64e42116dca7d">divu68</a> (<a class="el" href="type68_8h.html#10e94b422ef0c20dcdec20d31a1f5049">u32</a> a, <a class="el" href="type68_8h.html#10e94b422ef0c20dcdec20d31a1f5049">u32</a> b)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Unsigned divide. <a href="#0efc6474db1d3ac319c64e42116dca7d"></a><br></td></tr>
<tr><td colspan="2"><div class="groupHeader">Logical instructions.</div></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="el" href="type68_8h.html#0ce6887c26c1c49ad3be5710dd42bfd6">s32</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="inst68_8h.html#6ddfc249962d2735904c53ade48d432b">and68</a> (<a class="el" href="type68_8h.html#10e94b422ef0c20dcdec20d31a1f5049">u32</a> a, <a class="el" href="type68_8h.html#10e94b422ef0c20dcdec20d31a1f5049">u32</a> b)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Bitwise AND. <a href="#6ddfc249962d2735904c53ade48d432b"></a><br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="el" href="type68_8h.html#0ce6887c26c1c49ad3be5710dd42bfd6">s32</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="inst68_8h.html#b1e224a758833bf6b5d42699f6b27e0e">orr68</a> (<a class="el" href="type68_8h.html#10e94b422ef0c20dcdec20d31a1f5049">u32</a> a, <a class="el" href="type68_8h.html#10e94b422ef0c20dcdec20d31a1f5049">u32</a> b)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Bitwise OR. <a href="#b1e224a758833bf6b5d42699f6b27e0e"></a><br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="el" href="type68_8h.html#0ce6887c26c1c49ad3be5710dd42bfd6">s32</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="inst68_8h.html#11171db84407443290b3a0128c7f0081">eor68</a> (<a class="el" href="type68_8h.html#10e94b422ef0c20dcdec20d31a1f5049">u32</a> a, <a class="el" href="type68_8h.html#10e94b422ef0c20dcdec20d31a1f5049">u32</a> b)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Bitwise exclusif OR. <a href="#11171db84407443290b3a0128c7f0081"></a><br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="el" href="type68_8h.html#0ce6887c26c1c49ad3be5710dd42bfd6">s32</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="inst68_8h.html#166e295a1dd85115163c5e957c8a6390">not68</a> (<a class="el" href="type68_8h.html#0ce6887c26c1c49ad3be5710dd42bfd6">s32</a> s)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">First complement. <a href="#166e295a1dd85115163c5e957c8a6390"></a><br></td></tr>
</table>
<hr><h2>Detailed Description</h2>
68k arithmetic and logical instruction emulation.
<p>
<dl class="author" compact><dt><b>Author:</b></dt><dd>Ben(jamin) Gerard <<a href="mailto:ben@sashipa.com">ben@sashipa.com</a>> </dd></dl>
<dl class="date" compact><dt><b>Date:</b></dt><dd>13/03/1999 </dd></dl>
<dl class="version" compact><dt><b>Version:</b></dt><dd></dd></dl>
<dl class="rcs" compact><dt><b>Id</b></dt><dd><a class="el" href="inst68_8h.html" title="68k arithmetic and logical instruction emulation.">inst68.h</a>,v 2.1 2003/09/30 06:29:57 benjihan Exp </dd></dl>
<p>
Logical and arithmetical instructions are emulated with functions instead of macros to prevent from excessive code size generation that hurt processor cache. By the way these functions could easily be written in assembler and improve emulator execution time. All these functions work with 32 bit values. To perform other size instructions, operands must be left shifted in order to locate operands most signifiant bit at the 31st bit. <hr><h2>Function Documentation</h2>
<a class="anchor" name="fe25b6001cb9c19b6c7374290a07297d"></a><!-- doxytag: member="inst68.h::add68" ref="fe25b6001cb9c19b6c7374290a07297d" args="(s32 a, s32 b, s32 c)" -->
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<td class="memname"><a class="el" href="type68_8h.html#0ce6887c26c1c49ad3be5710dd42bfd6">s32</a> add68 </td>
<td>(</td>
<td class="paramtype"><a class="el" href="type68_8h.html#0ce6887c26c1c49ad3be5710dd42bfd6">s32</a> </td>
<td class="paramname"> <em>a</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype"><a class="el" href="type68_8h.html#0ce6887c26c1c49ad3be5710dd42bfd6">s32</a> </td>
<td class="paramname"> <em>b</em>, </td>
</tr>
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<td class="paramkey"></td>
<td></td>
<td class="paramtype"><a class="el" href="type68_8h.html#0ce6887c26c1c49ad3be5710dd42bfd6">s32</a> </td>
<td class="paramname"> <em>c</em></td><td> </td>
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<td></td>
<td>)</td>
<td></td><td></td><td></td>
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<div class="memdoc">
<p>
Addition.
<p>
<dl class="return" compact><dt><b>Returns:</b></dt><dd>a+b+c </dd></dl>
</div>
</div><p>
<a class="anchor" name="6fd001f5b3be1db144749719a0f30e89"></a><!-- doxytag: member="inst68.h::sub68" ref="6fd001f5b3be1db144749719a0f30e89" args="(s32 a, s32 b, s32 c)" -->
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<td class="memname"><a class="el" href="type68_8h.html#0ce6887c26c1c49ad3be5710dd42bfd6">s32</a> sub68 </td>
<td>(</td>
<td class="paramtype"><a class="el" href="type68_8h.html#0ce6887c26c1c49ad3be5710dd42bfd6">s32</a> </td>
<td class="paramname"> <em>a</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype"><a class="el" href="type68_8h.html#0ce6887c26c1c49ad3be5710dd42bfd6">s32</a> </td>
<td class="paramname"> <em>b</em>, </td>
</tr>
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<td class="paramkey"></td>
<td></td>
<td class="paramtype"><a class="el" href="type68_8h.html#0ce6887c26c1c49ad3be5710dd42bfd6">s32</a> </td>
<td class="paramname"> <em>c</em></td><td> </td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td><td></td><td></td>
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<div class="memdoc">
<p>
Subtraction.
<p>
<dl class="return" compact><dt><b>Returns:</b></dt><dd>a-b-c </dd></dl>
</div>
</div><p>
<a class="anchor" name="033e1db23be6b2abac08a8f9b04e8778"></a><!-- doxytag: member="inst68.h::muls68" ref="033e1db23be6b2abac08a8f9b04e8778" args="(s32 a, s32 b)" -->
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<td class="memname"><a class="el" href="type68_8h.html#0ce6887c26c1c49ad3be5710dd42bfd6">s32</a> muls68 </td>
<td>(</td>
<td class="paramtype"><a class="el" href="type68_8h.html#0ce6887c26c1c49ad3be5710dd42bfd6">s32</a> </td>
<td class="paramname"> <em>a</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype"><a class="el" href="type68_8h.html#0ce6887c26c1c49ad3be5710dd42bfd6">s32</a> </td>
<td class="paramname"> <em>b</em></td><td> </td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td><td></td><td></td>
</tr>
</table>
</div>
<div class="memdoc">
<p>
Signed multiplication.
<p>
<dl class="return" compact><dt><b>Returns:</b></dt><dd>(a>>16)*(b>>16) </dd></dl>
</div>
</div><p>
<a class="anchor" name="6912daba1274268ce61a2dac3798c0df"></a><!-- doxytag: member="inst68.h::mulu68" ref="6912daba1274268ce61a2dac3798c0df" args="(u32 a, u32 b)" -->
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<tr>
<td class="memname"><a class="el" href="type68_8h.html#0ce6887c26c1c49ad3be5710dd42bfd6">s32</a> mulu68 </td>
<td>(</td>
<td class="paramtype"><a class="el" href="type68_8h.html#10e94b422ef0c20dcdec20d31a1f5049">u32</a> </td>
<td class="paramname"> <em>a</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype"><a class="el" href="type68_8h.html#10e94b422ef0c20dcdec20d31a1f5049">u32</a> </td>
<td class="paramname"> <em>b</em></td><td> </td>
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<td></td>
<td>)</td>
<td></td><td></td><td></td>
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<div class="memdoc">
<p>
Unsigned multiplication.
<p>
<dl class="return" compact><dt><b>Returns:</b></dt><dd>(a>>16)*(b>>16) </dd></dl>
</div>
</div><p>
<a class="anchor" name="3013f879d00ec945c0d03268c33d9b2d"></a><!-- doxytag: member="inst68.h::divs68" ref="3013f879d00ec945c0d03268c33d9b2d" args="(s32 a, s32 b)" -->
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<td class="memname"><a class="el" href="type68_8h.html#0ce6887c26c1c49ad3be5710dd42bfd6">s32</a> divs68 </td>
<td>(</td>
<td class="paramtype"><a class="el" href="type68_8h.html#0ce6887c26c1c49ad3be5710dd42bfd6">s32</a> </td>
<td class="paramname"> <em>a</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype"><a class="el" href="type68_8h.html#0ce6887c26c1c49ad3be5710dd42bfd6">s32</a> </td>
<td class="paramname"> <em>b</em></td><td> </td>
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<td></td>
<td>)</td>
<td></td><td></td><td></td>
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<div class="memdoc">
<p>
Signed divide.
<p>
<dl class="return" compact><dt><b>Returns:</b></dt><dd>MSW:a%(b>>16) LSW:a/(b>>16) </dd></dl>
</div>
</div><p>
<a class="anchor" name="0efc6474db1d3ac319c64e42116dca7d"></a><!-- doxytag: member="inst68.h::divu68" ref="0efc6474db1d3ac319c64e42116dca7d" args="(u32 a, u32 b)" -->
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<td class="memname"><a class="el" href="type68_8h.html#0ce6887c26c1c49ad3be5710dd42bfd6">s32</a> divu68 </td>
<td>(</td>
<td class="paramtype"><a class="el" href="type68_8h.html#10e94b422ef0c20dcdec20d31a1f5049">u32</a> </td>
<td class="paramname"> <em>a</em>, </td>
</tr>
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<td class="paramkey"></td>
<td></td>
<td class="paramtype"><a class="el" href="type68_8h.html#10e94b422ef0c20dcdec20d31a1f5049">u32</a> </td>
<td class="paramname"> <em>b</em></td><td> </td>
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<td>)</td>
<td></td><td></td><td></td>
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<div class="memdoc">
<p>
Unsigned divide.
<p>
<dl class="return" compact><dt><b>Returns:</b></dt><dd>MSW:a%(b>>16) LSW:a/(b>>16) </dd></dl>
</div>
</div><p>
<a class="anchor" name="6ddfc249962d2735904c53ade48d432b"></a><!-- doxytag: member="inst68.h::and68" ref="6ddfc249962d2735904c53ade48d432b" args="(u32 a, u32 b)" -->
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<td class="memname"><a class="el" href="type68_8h.html#0ce6887c26c1c49ad3be5710dd42bfd6">s32</a> and68 </td>
<td>(</td>
<td class="paramtype"><a class="el" href="type68_8h.html#10e94b422ef0c20dcdec20d31a1f5049">u32</a> </td>
<td class="paramname"> <em>a</em>, </td>
</tr>
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<td class="paramkey"></td>
<td></td>
<td class="paramtype"><a class="el" href="type68_8h.html#10e94b422ef0c20dcdec20d31a1f5049">u32</a> </td>
<td class="paramname"> <em>b</em></td><td> </td>
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<td>)</td>
<td></td><td></td><td></td>
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<div class="memdoc">
<p>
Bitwise AND.
<p>
<dl class="return" compact><dt><b>Returns:</b></dt><dd>a&b </dd></dl>
</div>
</div><p>
<a class="anchor" name="b1e224a758833bf6b5d42699f6b27e0e"></a><!-- doxytag: member="inst68.h::orr68" ref="b1e224a758833bf6b5d42699f6b27e0e" args="(u32 a, u32 b)" -->
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<td class="memname"><a class="el" href="type68_8h.html#0ce6887c26c1c49ad3be5710dd42bfd6">s32</a> orr68 </td>
<td>(</td>
<td class="paramtype"><a class="el" href="type68_8h.html#10e94b422ef0c20dcdec20d31a1f5049">u32</a> </td>
<td class="paramname"> <em>a</em>, </td>
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<td class="paramkey"></td>
<td></td>
<td class="paramtype"><a class="el" href="type68_8h.html#10e94b422ef0c20dcdec20d31a1f5049">u32</a> </td>
<td class="paramname"> <em>b</em></td><td> </td>
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<td></td>
<td>)</td>
<td></td><td></td><td></td>
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<div class="memdoc">
<p>
Bitwise OR.
<p>
<dl class="return" compact><dt><b>Returns:</b></dt><dd>a|b </dd></dl>
</div>
</div><p>
<a class="anchor" name="11171db84407443290b3a0128c7f0081"></a><!-- doxytag: member="inst68.h::eor68" ref="11171db84407443290b3a0128c7f0081" args="(u32 a, u32 b)" -->
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<td class="memname"><a class="el" href="type68_8h.html#0ce6887c26c1c49ad3be5710dd42bfd6">s32</a> eor68 </td>
<td>(</td>
<td class="paramtype"><a class="el" href="type68_8h.html#10e94b422ef0c20dcdec20d31a1f5049">u32</a> </td>
<td class="paramname"> <em>a</em>, </td>
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<td></td>
<td class="paramtype"><a class="el" href="type68_8h.html#10e94b422ef0c20dcdec20d31a1f5049">u32</a> </td>
<td class="paramname"> <em>b</em></td><td> </td>
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<td>)</td>
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<p>
Bitwise exclusif OR.
<p>
<dl class="return" compact><dt><b>Returns:</b></dt><dd>a^b </dd></dl>
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<a class="anchor" name="166e295a1dd85115163c5e957c8a6390"></a><!-- doxytag: member="inst68.h::not68" ref="166e295a1dd85115163c5e957c8a6390" args="(s32 s)" -->
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<td class="memname"><a class="el" href="type68_8h.html#0ce6887c26c1c49ad3be5710dd42bfd6">s32</a> not68 </td>
<td>(</td>
<td class="paramtype"><a class="el" href="type68_8h.html#0ce6887c26c1c49ad3be5710dd42bfd6">s32</a> </td>
<td class="paramname"> <em>s</em> </td>
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<p>
First complement.
<p>
<dl class="return" compact><dt><b>Returns:</b></dt><dd>~s </dd></dl>
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Mandriva
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2010.0
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