821 lines
44 KiB
HTML
Executable File
821 lines
44 KiB
HTML
Executable File
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<title>SCC.150 Assembler Emulator: /home/rumperuu/Documents/University/University Work/SCC.150 Digital Systems/Coursework/unr-C/SCC.150 Assembler Emulator/source/emulator.c File Reference</title>
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<div id="projectname">SCC.150 Assembler Emulator
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<div id="projectbrief">A compiler for a simple assembler language</div>
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<div class="title">emulator.c File Reference</div> </div>
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<div class="textblock"><code>#include "<a class="el" href="emulator_8h_source.html">emulator.h</a>"</code><br/>
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<code>#include "<a class="el" href="mystring_8h_source.html">mystring.h</a>"</code><br/>
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Typedefs</h2></td></tr>
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typedef int(* </td><td class="memItemRight" valign="bottom"><b>opcode_function</b> )(char *, char *, char *)</td></tr>
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<tr class="separator:ac2948fb0a8bb3d65787563e11508c25d"><td class="memSeparator" colspan="2"> </td></tr>
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</table><table class="memberdecls">
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<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="func-members"></a>
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Functions</h2></td></tr>
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<tr class="memitem:a00e5e1b7c08d6368342756805800133b"><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="emulator_8c.html#a00e5e1b7c08d6368342756805800133b">opcodeNOP</a> (char *opcode, char *arg1, char *arg2)</td></tr>
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<tr class="separator:a00e5e1b7c08d6368342756805800133b"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:a5d6aac425624196dcd0d278760270d00"><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="emulator_8c.html#a5d6aac425624196dcd0d278760270d00">opcodeSET</a> (char *opcode, char *arg1, char *arg2)</td></tr>
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<tr class="separator:a5d6aac425624196dcd0d278760270d00"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:a434bd1e8b4e45503586891e565138b84"><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="emulator_8c.html#a434bd1e8b4e45503586891e565138b84">opcodeAND</a> (char *opcode, char *arg1, char *arg2)</td></tr>
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<tr class="separator:a434bd1e8b4e45503586891e565138b84"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:a54c12a24203abe192fe4f727ea9ffe60"><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="emulator_8c.html#a54c12a24203abe192fe4f727ea9ffe60">opcodeOR</a> (char *opcode, char *arg1, char *arg2)</td></tr>
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<tr class="separator:a54c12a24203abe192fe4f727ea9ffe60"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:a501fe22548fd568d37522ba76ff2c1e7"><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="emulator_8c.html#a501fe22548fd568d37522ba76ff2c1e7">opcodeADD</a> (char *opcode, char *arg1, char *arg2)</td></tr>
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<tr class="separator:a501fe22548fd568d37522ba76ff2c1e7"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:a3ead6beddb4488ab700a81968e30e11c"><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="emulator_8c.html#a3ead6beddb4488ab700a81968e30e11c">opcodeSUB</a> (char *opcode, char *arg1, char *arg2)</td></tr>
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<tr class="separator:a3ead6beddb4488ab700a81968e30e11c"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:a3cdb2ee632bc1b19d885c26b044d76ae"><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="emulator_8c.html#a3cdb2ee632bc1b19d885c26b044d76ae">opcodeSHL</a> (char *opcode, char *arg1, char *arg2)</td></tr>
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<tr class="memitem:a6f1fa1ff65a606afddb458fcd64449cf"><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="emulator_8c.html#a6f1fa1ff65a606afddb458fcd64449cf">opcodeSHR</a> (char *opcode, char *arg1, char *arg2)</td></tr>
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<tr class="separator:a6f1fa1ff65a606afddb458fcd64449cf"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:a734105640ec0f0c1e6dc8c5384b2d1d0"><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="emulator_8c.html#a734105640ec0f0c1e6dc8c5384b2d1d0">opcodeJMP</a> (char *opcode, char *arg1, char *arg2)</td></tr>
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<tr class="separator:a734105640ec0f0c1e6dc8c5384b2d1d0"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:aeb406b3428b5429249ab2c7e3d7bcc3c"><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="emulator_8c.html#aeb406b3428b5429249ab2c7e3d7bcc3c">opcodePRT</a> (char *opcode, char *arg1, char *arg2)</td></tr>
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<tr class="separator:aeb406b3428b5429249ab2c7e3d7bcc3c"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:ae7178313a4254c62afc060814ebca038"><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="emulator_8c.html#ae7178313a4254c62afc060814ebca038">getArg2</a> (char *arg2)</td></tr>
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<tr class="memitem:a40c9c476ef53a0c955d3e633b54d2bd2"><td class="memItemLeft" align="right" valign="top">bool </td><td class="memItemRight" valign="bottom"><a class="el" href="emulator_8c.html#a40c9c476ef53a0c955d3e633b54d2bd2">isValid</a> (char *opcode, char *arg1, char *arg2)</td></tr>
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<tr class="separator:a40c9c476ef53a0c955d3e633b54d2bd2"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:a6b5c26779c71916073e7b8f9debea56d"><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="emulator_8c.html#a6b5c26779c71916073e7b8f9debea56d">execInstruction</a> (char *instruction)</td></tr>
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<tr class="separator:a6b5c26779c71916073e7b8f9debea56d"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:a2bbc98d3653ad65ad12757dfa7bdfdd4"><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="emulator_8c.html#a2bbc98d3653ad65ad12757dfa7bdfdd4">execProgram</a> ()</td></tr>
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<tr class="separator:a2bbc98d3653ad65ad12757dfa7bdfdd4"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:a3d30edda62d5695ffaa3b62121d4bf98"><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="emulator_8c.html#a3d30edda62d5695ffaa3b62121d4bf98">loadProgram</a> ()</td></tr>
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<tr class="separator:a3d30edda62d5695ffaa3b62121d4bf98"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:ae66f6b31b5ad750f1fe042a706a4e3d4"><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="emulator_8c.html#ae66f6b31b5ad750f1fe042a706a4e3d4">main</a> ()</td></tr>
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</table><table class="memberdecls">
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<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="var-members"></a>
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Variables</h2></td></tr>
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<tr class="memitem:afb239207f953e9750ae152379fd9aaa0"><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="afb239207f953e9750ae152379fd9aaa0"></a>
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char </td><td class="memItemRight" valign="bottom"><b>prog</b> [MAX_PROG_LEN][MAX_LINE_LEN]</td></tr>
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<tr class="separator:afb239207f953e9750ae152379fd9aaa0"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:ac67bfbb027e06757e87c73fbf8dedd00"><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="ac67bfbb027e06757e87c73fbf8dedd00"></a>
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int </td><td class="memItemRight" valign="bottom"><b>progLen</b> = 0</td></tr>
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<tr class="memitem:a87f7ce345bef7ff2dae769a749cffc3f"><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="a87f7ce345bef7ff2dae769a749cffc3f"></a>
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unsigned int </td><td class="memItemRight" valign="bottom"><b>programRuns</b> = 0</td></tr>
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<tr class="memitem:a2bac6f420cd6061ac537bbe7540b48d1"><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="a2bac6f420cd6061ac537bbe7540b48d1"></a>
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unsigned int </td><td class="memItemRight" valign="bottom"><b>REGA</b> = 0</td></tr>
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<tr class="memitem:a49f79d24966cadf4755a0bb549062928"><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="a49f79d24966cadf4755a0bb549062928"></a>
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unsigned int </td><td class="memItemRight" valign="bottom"><b>REGB</b> = 0</td></tr>
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<tr class="memitem:a8ee0a1731db5dbccb1a2dd187e1f8c2e"><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="a8ee0a1731db5dbccb1a2dd187e1f8c2e"></a>
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unsigned int </td><td class="memItemRight" valign="bottom"><b>REGC</b> = 0</td></tr>
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<tr class="memitem:a34801f98db7e647723fb1ee69a1026c5"><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="a34801f98db7e647723fb1ee69a1026c5"></a>
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unsigned int </td><td class="memItemRight" valign="bottom"><b>REGX</b> = 0</td></tr>
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<tr class="memitem:aeacb67c0cb64e281ca501c717f673174"><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="aeacb67c0cb64e281ca501c717f673174"></a>
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unsigned int </td><td class="memItemRight" valign="bottom"><b>INSP</b> = 0</td></tr>
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<tr class="separator:aeacb67c0cb64e281ca501c717f673174"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:a6f0c4cd9d2558ffac4c14be6ab9f9a7a"><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="a6f0c4cd9d2558ffac4c14be6ab9f9a7a"></a>
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const char * </td><td class="memItemRight" valign="bottom"><b>register_str</b> [] = {"REGA", "REGB", "REGC", "REGX"}</td></tr>
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<tr class="memitem:a50bb3c6ef84bb338f7185fb9ded09fe7"><td class="memItemLeft" align="right" valign="top">const char * </td><td class="memItemRight" valign="bottom"><b>opcodeStr</b> []</td></tr>
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<tr class="memitem:a2280840a3ebd422797c95a65e3e272e4"><td class="memItemLeft" align="right" valign="top">opcode_function </td><td class="memItemRight" valign="bottom"><b>opcodeFunc</b> []</td></tr>
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</table>
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<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
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<div class="textblock"><dl class="section author"><dt>Author</dt><dd>Ben Goldsworthy (rumps) <a href="#" onclick="location.href='mai'+'lto:'+'bgo'+'ld'+'swo'+'rt'+'hy9'+'6@'+'gma'+'il'+'.co'+'m'; return false;">bgold<span style="display: none;">.nosp@m.</span>swor<span style="display: none;">.nosp@m.</span>thy96<span style="display: none;">.nosp@m.</span>@gma<span style="display: none;">.nosp@m.</span>il.co<span style="display: none;">.nosp@m.</span>m</a> </dd></dl>
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<dl class="section version"><dt>Version</dt><dd>1.0</dd></dl>
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<h1><a class="anchor" id="LICENSE"></a>
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LICENSE</h1>
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<p>This file is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.</p>
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<p>This file is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.</p>
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<p>You should have received a copy of the GNU General Public License along with this program. If not, see <a href="http://www.gnu.org/licenses/">http://www.gnu.org/licenses/</a>.</p>
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<h1><a class="anchor" id="DESCRIPTION"></a>
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DESCRIPTION</h1>
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<p>This program emulates programs written in the SCC.150 Assembler language. The language is a very simple assembly language that comprises of only ten opcodes:</p>
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<p><code>NOP</code> or 'No OPeration', which performs no task</p>
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<p><code>SET ARG1 ARG2</code>, which puts the value in <code>ARG2</code> into the register indicated in <code>ARG1</code></p>
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<p><code>AND ARG1 ARG2</code>, which performs a bitwise AND operation on the values in <code>ARG1</code> and <code>ARG2</code></p>
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<p><code>OR ARG1 ARG2</code>, which performs a bitwise OR operation on the values in <code>ARG1</code> and <code>ARG2</code></p>
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<p><code>ADD ARG1 ARG2</code>, which performs an addition operation on the values in <code>ARG1</code> and <code>ARG2</code></p>
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<p><code>SUB ARG1 ARG2</code>, which performs a subtraction operation on the values in <code>ARG1</code> and <code>ARG2</code></p>
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<p><code>SHL ARG1 ARG2</code>, which performs a bitwise shift left on the value in <code>ARG1</code>, to the number indicated in <code>ARG2</code></p>
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<p><code>SHR ARG1 ARG2</code>, which performs a bitwise shift right on the value in <code>ARG1</code>, to the number indicated in <code>ARG2</code></p>
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<p><code>JMP ARG1</code>, which jumps to the line indicated by <code>ARG1</code> if the value in <code>REGX</code> is 0</p>
|
|
<p><code>PRT ARG1</code>, which prints the value in <code>ARG1</code></p>
|
|
<p>Five registers are used: <code>REGA</code>, <code>REGB</code>, <code>REGC</code>, <code>REGX</code> and <code>INSP</code>, or 'INStruction Pointer'.</p>
|
|
<p>Comments in the language are indicated by the line beginning with a '#'. </p>
|
|
</div><h2 class="groupheader">Function Documentation</h2>
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<a class="anchor" id="a6b5c26779c71916073e7b8f9debea56d"></a>
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<div class="memitem">
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<div class="memproto">
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<table class="memname">
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<tr>
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<td class="memname">int execInstruction </td>
|
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<td>(</td>
|
|
<td class="paramtype">char * </td>
|
|
<td class="paramname"><em>instruction</em></td><td>)</td>
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<td></td>
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</tr>
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</table>
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</div><div class="memdoc">
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<p>Executes an instruction.</p>
|
|
<p>Tests the validity of an instruction (and whether or not it's a comment), and if the line passes, calls the appropriate function.</p>
|
|
<dl class="params"><dt>Parameters</dt><dd>
|
|
<table class="params">
|
|
<tr><td class="paramname">instruction</td><td>the instruction to test </td></tr>
|
|
</table>
|
|
</dd>
|
|
</dl>
|
|
<dl class="section return"><dt>Returns</dt><dd>0 on success, -1 on failure </dd></dl>
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</div>
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</div>
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<a class="anchor" id="a2bbc98d3653ad65ad12757dfa7bdfdd4"></a>
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<div class="memitem">
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<div class="memproto">
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<table class="memname">
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<tr>
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<td class="memname">int execProgram </td>
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<td>(</td>
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<td class="paramname"></td><td>)</td>
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<td></td>
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</tr>
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</table>
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</div><div class="memdoc">
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<p>Executes an the program.</p>
|
|
<p>Runs <code>execInstruction</code> on each line of the program in turn.</p>
|
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<dl class="section return"><dt>Returns</dt><dd>0 on success, -1 on failure </dd></dl>
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</div>
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</div>
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<a class="anchor" id="ae7178313a4254c62afc060814ebca038"></a>
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<div class="memitem">
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<div class="memproto">
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<table class="memname">
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<tr>
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<td class="memname">int getArg2 </td>
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<td>(</td>
|
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<td class="paramtype">char * </td>
|
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<td class="paramname"><em>arg2</em></td><td>)</td>
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<td></td>
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</tr>
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</table>
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</div><div class="memdoc">
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<p>A function to return the value in the second argument of an instruction.</p>
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|
<p>Returns either the value in the indicated register or, as the instruction is parsed as a string, the integer value given. <code><a class="el" href="mystring_8c.html#a70913f883a62585fb8fe025aa1e56749">mystrncmp()</a></code> is used over <code><a class="el" href="mystring_8c.html#a3dab99f21a63ee803be3e9344efda0a0">mystrcmp()</a></code> because there tends to be dodgy C string magic tacked on to the end of the args.</p>
|
|
<dl class="params"><dt>Parameters</dt><dd>
|
|
<table class="params">
|
|
<tr><td class="paramname">arg2</td><td>the value to parse </td></tr>
|
|
</table>
|
|
</dd>
|
|
</dl>
|
|
<dl class="section return"><dt>Returns</dt><dd>an integer </dd></dl>
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|
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</div>
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</div>
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<a class="anchor" id="a40c9c476ef53a0c955d3e633b54d2bd2"></a>
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<div class="memitem">
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<div class="memproto">
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<table class="memname">
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<tr>
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<td class="memname">bool isValid </td>
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|
<td>(</td>
|
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<td class="paramtype">char * </td>
|
|
<td class="paramname"><em>opcode</em>, </td>
|
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</tr>
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<tr>
|
|
<td class="paramkey"></td>
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|
<td></td>
|
|
<td class="paramtype">char * </td>
|
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<td class="paramname"><em>arg1</em>, </td>
|
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</tr>
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<tr>
|
|
<td class="paramkey"></td>
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|
<td></td>
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|
<td class="paramtype">char * </td>
|
|
<td class="paramname"><em>arg2</em> </td>
|
|
</tr>
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<tr>
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<td></td>
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<td>)</td>
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<td></td><td></td>
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</tr>
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</table>
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</div><div class="memdoc">
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<p>Tests if an instruction is valid.</p>
|
|
<p>Tests that the opcode is valid and that the registers are also.</p>
|
|
<dl class="params"><dt>Parameters</dt><dd>
|
|
<table class="params">
|
|
<tr><td class="paramname">opcode</td><td>the opcode </td></tr>
|
|
<tr><td class="paramname">arg1</td><td>the first argument </td></tr>
|
|
<tr><td class="paramname">arg2</td><td>the second argument (not applicable for <code>PRT</code>) </td></tr>
|
|
</table>
|
|
</dd>
|
|
</dl>
|
|
<dl class="section return"><dt>Returns</dt><dd><code>true</code> if the string is valid, <code>false</code> if it is not </dd></dl>
|
|
|
|
</div>
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</div>
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<a class="anchor" id="a3d30edda62d5695ffaa3b62121d4bf98"></a>
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<div class="memitem">
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<div class="memproto">
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<table class="memname">
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<tr>
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<td class="memname">int loadProgram </td>
|
|
<td>(</td>
|
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<td class="paramname"></td><td>)</td>
|
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<td></td>
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</tr>
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</table>
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</div><div class="memdoc">
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<p>Loads a program.</p>
|
|
<p>Loads the program file and reads each line into an array.</p>
|
|
<dl class="section return"><dt>Returns</dt><dd>0 on success, -1 on failure </dd></dl>
|
|
|
|
</div>
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</div>
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<a class="anchor" id="ae66f6b31b5ad750f1fe042a706a4e3d4"></a>
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<div class="memitem">
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<div class="memproto">
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<table class="memname">
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<tr>
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<td class="memname">int main </td>
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<td>(</td>
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<td class="paramname"></td><td>)</td>
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<td></td>
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</tr>
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</table>
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</div><div class="memdoc">
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<p>Runs the program.</p>
|
|
<dl class="section return"><dt>Returns</dt><dd>0 on success, -1 on failure </dd></dl>
|
|
|
|
</div>
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</div>
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<a class="anchor" id="a501fe22548fd568d37522ba76ff2c1e7"></a>
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<div class="memitem">
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<div class="memproto">
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<table class="memname">
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<tr>
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<td class="memname">int opcodeADD </td>
|
|
<td>(</td>
|
|
<td class="paramtype">char * </td>
|
|
<td class="paramname"><em>opcode</em>, </td>
|
|
</tr>
|
|
<tr>
|
|
<td class="paramkey"></td>
|
|
<td></td>
|
|
<td class="paramtype">char * </td>
|
|
<td class="paramname"><em>arg1</em>, </td>
|
|
</tr>
|
|
<tr>
|
|
<td class="paramkey"></td>
|
|
<td></td>
|
|
<td class="paramtype">char * </td>
|
|
<td class="paramname"><em>arg2</em> </td>
|
|
</tr>
|
|
<tr>
|
|
<td></td>
|
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<td>)</td>
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|
<td></td><td></td>
|
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</tr>
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</table>
|
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</div><div class="memdoc">
|
|
<p>A function to handle the <code>ADD</code> opcode</p>
|
|
<p>Performs addition on the values in <code>arg1</code> and <code>arg2</code>, storing the result in <code>arg1</code>.</p>
|
|
<dl class="params"><dt>Parameters</dt><dd>
|
|
<table class="params">
|
|
<tr><td class="paramname">opcode</td><td>the opcode </td></tr>
|
|
<tr><td class="paramname">arg1</td><td>the first argument </td></tr>
|
|
<tr><td class="paramname">arg2</td><td>the second argument </td></tr>
|
|
</table>
|
|
</dd>
|
|
</dl>
|
|
<dl class="section return"><dt>Returns</dt><dd>0 on success </dd></dl>
|
|
|
|
</div>
|
|
</div>
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<a class="anchor" id="a434bd1e8b4e45503586891e565138b84"></a>
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|
<div class="memitem">
|
|
<div class="memproto">
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<table class="memname">
|
|
<tr>
|
|
<td class="memname">int opcodeAND </td>
|
|
<td>(</td>
|
|
<td class="paramtype">char * </td>
|
|
<td class="paramname"><em>opcode</em>, </td>
|
|
</tr>
|
|
<tr>
|
|
<td class="paramkey"></td>
|
|
<td></td>
|
|
<td class="paramtype">char * </td>
|
|
<td class="paramname"><em>arg1</em>, </td>
|
|
</tr>
|
|
<tr>
|
|
<td class="paramkey"></td>
|
|
<td></td>
|
|
<td class="paramtype">char * </td>
|
|
<td class="paramname"><em>arg2</em> </td>
|
|
</tr>
|
|
<tr>
|
|
<td></td>
|
|
<td>)</td>
|
|
<td></td><td></td>
|
|
</tr>
|
|
</table>
|
|
</div><div class="memdoc">
|
|
<p>A function to handle the <code>AND</code> opcode</p>
|
|
<p>Performs a bitwise AND on the values in <code>arg1</code> and <code>arg2</code>, storing the result in <code>arg1</code>.</p>
|
|
<dl class="params"><dt>Parameters</dt><dd>
|
|
<table class="params">
|
|
<tr><td class="paramname">opcode</td><td>the opcode </td></tr>
|
|
<tr><td class="paramname">arg1</td><td>the first argument </td></tr>
|
|
<tr><td class="paramname">arg2</td><td>the second argument </td></tr>
|
|
</table>
|
|
</dd>
|
|
</dl>
|
|
<dl class="section return"><dt>Returns</dt><dd>0 on success </dd></dl>
|
|
|
|
</div>
|
|
</div>
|
|
<a class="anchor" id="a734105640ec0f0c1e6dc8c5384b2d1d0"></a>
|
|
<div class="memitem">
|
|
<div class="memproto">
|
|
<table class="memname">
|
|
<tr>
|
|
<td class="memname">int opcodeJMP </td>
|
|
<td>(</td>
|
|
<td class="paramtype">char * </td>
|
|
<td class="paramname"><em>opcode</em>, </td>
|
|
</tr>
|
|
<tr>
|
|
<td class="paramkey"></td>
|
|
<td></td>
|
|
<td class="paramtype">char * </td>
|
|
<td class="paramname"><em>arg1</em>, </td>
|
|
</tr>
|
|
<tr>
|
|
<td class="paramkey"></td>
|
|
<td></td>
|
|
<td class="paramtype">char * </td>
|
|
<td class="paramname"><em>arg2</em> </td>
|
|
</tr>
|
|
<tr>
|
|
<td></td>
|
|
<td>)</td>
|
|
<td></td><td></td>
|
|
</tr>
|
|
</table>
|
|
</div><div class="memdoc">
|
|
<p>A function to handle the <code>JMP</code> opcode</p>
|
|
<p>If <code>REGX</code> contains 0, jumps to the line indicated by <code>arg1</code>.</p>
|
|
<dl class="params"><dt>Parameters</dt><dd>
|
|
<table class="params">
|
|
<tr><td class="paramname">opcode</td><td>the opcode </td></tr>
|
|
<tr><td class="paramname">arg1</td><td>the first argument </td></tr>
|
|
<tr><td class="paramname">arg2</td><td>the second argument (not applicable for <code>JMP</code>) </td></tr>
|
|
</table>
|
|
</dd>
|
|
</dl>
|
|
<dl class="section return"><dt>Returns</dt><dd>0 on success </dd></dl>
|
|
|
|
</div>
|
|
</div>
|
|
<a class="anchor" id="a00e5e1b7c08d6368342756805800133b"></a>
|
|
<div class="memitem">
|
|
<div class="memproto">
|
|
<table class="memname">
|
|
<tr>
|
|
<td class="memname">int opcodeNOP </td>
|
|
<td>(</td>
|
|
<td class="paramtype">char * </td>
|
|
<td class="paramname"><em>opcode</em>, </td>
|
|
</tr>
|
|
<tr>
|
|
<td class="paramkey"></td>
|
|
<td></td>
|
|
<td class="paramtype">char * </td>
|
|
<td class="paramname"><em>arg1</em>, </td>
|
|
</tr>
|
|
<tr>
|
|
<td class="paramkey"></td>
|
|
<td></td>
|
|
<td class="paramtype">char * </td>
|
|
<td class="paramname"><em>arg2</em> </td>
|
|
</tr>
|
|
<tr>
|
|
<td></td>
|
|
<td>)</td>
|
|
<td></td><td></td>
|
|
</tr>
|
|
</table>
|
|
</div><div class="memdoc">
|
|
<p>A function to handle the <code>NOP</code> opcode</p>
|
|
<p>Increments the instruction pointer <code>INSP</code>.</p>
|
|
<dl class="params"><dt>Parameters</dt><dd>
|
|
<table class="params">
|
|
<tr><td class="paramname">opcode</td><td>the opcode </td></tr>
|
|
<tr><td class="paramname">arg1</td><td>the first argument (not applicable for <code>NOP</code>) </td></tr>
|
|
<tr><td class="paramname">arg2</td><td>the second argument (not applicable for <code>NOP</code>) </td></tr>
|
|
</table>
|
|
</dd>
|
|
</dl>
|
|
<dl class="section return"><dt>Returns</dt><dd>0 on success </dd></dl>
|
|
|
|
</div>
|
|
</div>
|
|
<a class="anchor" id="a54c12a24203abe192fe4f727ea9ffe60"></a>
|
|
<div class="memitem">
|
|
<div class="memproto">
|
|
<table class="memname">
|
|
<tr>
|
|
<td class="memname">int opcodeOR </td>
|
|
<td>(</td>
|
|
<td class="paramtype">char * </td>
|
|
<td class="paramname"><em>opcode</em>, </td>
|
|
</tr>
|
|
<tr>
|
|
<td class="paramkey"></td>
|
|
<td></td>
|
|
<td class="paramtype">char * </td>
|
|
<td class="paramname"><em>arg1</em>, </td>
|
|
</tr>
|
|
<tr>
|
|
<td class="paramkey"></td>
|
|
<td></td>
|
|
<td class="paramtype">char * </td>
|
|
<td class="paramname"><em>arg2</em> </td>
|
|
</tr>
|
|
<tr>
|
|
<td></td>
|
|
<td>)</td>
|
|
<td></td><td></td>
|
|
</tr>
|
|
</table>
|
|
</div><div class="memdoc">
|
|
<p>A function to handle the <code>OR</code> opcode</p>
|
|
<p>Performs a bitwise OR on the values in <code>arg1</code> and <code>arg2</code>, storing the result in <code>arg1</code>.</p>
|
|
<dl class="params"><dt>Parameters</dt><dd>
|
|
<table class="params">
|
|
<tr><td class="paramname">opcode</td><td>the opcode </td></tr>
|
|
<tr><td class="paramname">arg1</td><td>the first argument </td></tr>
|
|
<tr><td class="paramname">arg2</td><td>the second argument </td></tr>
|
|
</table>
|
|
</dd>
|
|
</dl>
|
|
<dl class="section return"><dt>Returns</dt><dd>0 on success </dd></dl>
|
|
|
|
</div>
|
|
</div>
|
|
<a class="anchor" id="aeb406b3428b5429249ab2c7e3d7bcc3c"></a>
|
|
<div class="memitem">
|
|
<div class="memproto">
|
|
<table class="memname">
|
|
<tr>
|
|
<td class="memname">int opcodePRT </td>
|
|
<td>(</td>
|
|
<td class="paramtype">char * </td>
|
|
<td class="paramname"><em>opcode</em>, </td>
|
|
</tr>
|
|
<tr>
|
|
<td class="paramkey"></td>
|
|
<td></td>
|
|
<td class="paramtype">char * </td>
|
|
<td class="paramname"><em>arg1</em>, </td>
|
|
</tr>
|
|
<tr>
|
|
<td class="paramkey"></td>
|
|
<td></td>
|
|
<td class="paramtype">char * </td>
|
|
<td class="paramname"><em>arg2</em> </td>
|
|
</tr>
|
|
<tr>
|
|
<td></td>
|
|
<td>)</td>
|
|
<td></td><td></td>
|
|
</tr>
|
|
</table>
|
|
</div><div class="memdoc">
|
|
<p>A function to handle the <code>PRT</code> opcode</p>
|
|
<p>Prints the value in the register indicated in <code>arg1</code>, or the integer value specified.</p>
|
|
<dl class="params"><dt>Parameters</dt><dd>
|
|
<table class="params">
|
|
<tr><td class="paramname">opcode</td><td>the opcode </td></tr>
|
|
<tr><td class="paramname">arg1</td><td>the first argument </td></tr>
|
|
<tr><td class="paramname">arg2</td><td>the second argument (not applicable for <code>PRT</code>) </td></tr>
|
|
</table>
|
|
</dd>
|
|
</dl>
|
|
<dl class="section return"><dt>Returns</dt><dd>0 on success </dd></dl>
|
|
|
|
</div>
|
|
</div>
|
|
<a class="anchor" id="a5d6aac425624196dcd0d278760270d00"></a>
|
|
<div class="memitem">
|
|
<div class="memproto">
|
|
<table class="memname">
|
|
<tr>
|
|
<td class="memname">int opcodeSET </td>
|
|
<td>(</td>
|
|
<td class="paramtype">char * </td>
|
|
<td class="paramname"><em>opcode</em>, </td>
|
|
</tr>
|
|
<tr>
|
|
<td class="paramkey"></td>
|
|
<td></td>
|
|
<td class="paramtype">char * </td>
|
|
<td class="paramname"><em>arg1</em>, </td>
|
|
</tr>
|
|
<tr>
|
|
<td class="paramkey"></td>
|
|
<td></td>
|
|
<td class="paramtype">char * </td>
|
|
<td class="paramname"><em>arg2</em> </td>
|
|
</tr>
|
|
<tr>
|
|
<td></td>
|
|
<td>)</td>
|
|
<td></td><td></td>
|
|
</tr>
|
|
</table>
|
|
</div><div class="memdoc">
|
|
<p>A function to handle the <code>SET</code> opcode</p>
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<p>Gets the value of either the register or integer set in <code>arg2</code> and places it in the register indicated by <code>arg1</code>.</p>
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<dl class="params"><dt>Parameters</dt><dd>
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<table class="params">
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<tr><td class="paramname">opcode</td><td>the opcode </td></tr>
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<tr><td class="paramname">arg1</td><td>the first argument </td></tr>
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<tr><td class="paramname">arg2</td><td>the second argument </td></tr>
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</table>
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</dd>
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</dl>
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<dl class="section return"><dt>Returns</dt><dd>0 on success </dd></dl>
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</div>
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<a class="anchor" id="a3cdb2ee632bc1b19d885c26b044d76ae"></a>
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<td class="memname">int opcodeSHL </td>
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<td>(</td>
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<td class="paramtype">char * </td>
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<td class="paramname"><em>opcode</em>, </td>
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<td class="paramkey"></td>
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<td></td>
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<td class="paramtype">char * </td>
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<td class="paramname"><em>arg1</em>, </td>
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<td class="paramkey"></td>
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<td></td>
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<td class="paramtype">char * </td>
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<td class="paramname"><em>arg2</em> </td>
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<td></td>
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<td>)</td>
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<p>A function to handle the <code>SHL</code> opcode</p>
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<p>Performs a bitwise shift left on the value in <code>arg1</code>, storing the result in <code>arg1</code>. The number of shifts is specified in <code>arg2</code>.</p>
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<dl class="params"><dt>Parameters</dt><dd>
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<table class="params">
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<tr><td class="paramname">opcode</td><td>the opcode </td></tr>
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<tr><td class="paramname">arg1</td><td>the first argument </td></tr>
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<tr><td class="paramname">arg2</td><td>the second argument </td></tr>
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</table>
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</dd>
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</dl>
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<dl class="section return"><dt>Returns</dt><dd>0 on success </dd></dl>
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<td class="memname">int opcodeSHR </td>
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<td>(</td>
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<td class="paramtype">char * </td>
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<td class="paramname"><em>opcode</em>, </td>
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</tr>
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<td class="paramkey"></td>
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<td></td>
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<td class="paramtype">char * </td>
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<td class="paramname"><em>arg1</em>, </td>
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<td class="paramkey"></td>
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<td></td>
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<td class="paramtype">char * </td>
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<td class="paramname"><em>arg2</em> </td>
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</tr>
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<td></td>
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<td>)</td>
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<td></td><td></td>
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<p>A function to handle the <code>SHR</code> opcode</p>
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<p>Performs a bitwise shift right on the value in <code>arg1</code>, storing the result in <code>arg1</code>. The number of shifts is specified in <code>arg2</code>.</p>
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<dl class="params"><dt>Parameters</dt><dd>
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<table class="params">
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<tr><td class="paramname">opcode</td><td>the opcode </td></tr>
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<tr><td class="paramname">arg1</td><td>the first argument </td></tr>
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<tr><td class="paramname">arg2</td><td>the second argument </td></tr>
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</table>
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</dd>
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</dl>
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<dl class="section return"><dt>Returns</dt><dd>0 on success </dd></dl>
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<td class="memname">int opcodeSUB </td>
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<td>(</td>
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<td class="paramtype">char * </td>
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<td class="paramname"><em>opcode</em>, </td>
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<td class="paramkey"></td>
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<td></td>
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<td class="paramname"><em>arg1</em>, </td>
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<td class="paramkey"></td>
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<td></td>
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<td class="paramtype">char * </td>
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<td class="paramname"><em>arg2</em> </td>
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</tr>
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<tr>
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<td></td>
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<td>)</td>
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<td></td><td></td>
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<p>A function to handle the <code>SUB</code> opcode</p>
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<p>Subtracts the value in <code>arg2</code> from the value in <code>arg1</code>, storing the result in <code>arg1</code>.</p>
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<dl class="params"><dt>Parameters</dt><dd>
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<table class="params">
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<tr><td class="paramname">opcode</td><td>the opcode </td></tr>
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<tr><td class="paramname">arg1</td><td>the first argument </td></tr>
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<tr><td class="paramname">arg2</td><td>the second argument </td></tr>
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</table>
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</dd>
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</dl>
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<dl class="section return"><dt>Returns</dt><dd>0 on success </dd></dl>
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</div>
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</div>
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<h2 class="groupheader">Variable Documentation</h2>
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<a class="anchor" id="a2280840a3ebd422797c95a65e3e272e4"></a>
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<td class="memname">opcode_function opcodeFunc[]</td>
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</table>
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</div><div class="memdoc">
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<b>Initial value:</b><div class="fragment"><div class="line">= {&<a class="code" href="emulator_8c.html#a00e5e1b7c08d6368342756805800133b">opcodeNOP</a>, &<a class="code" href="emulator_8c.html#a5d6aac425624196dcd0d278760270d00">opcodeSET</a>, &<a class="code" href="emulator_8c.html#a434bd1e8b4e45503586891e565138b84">opcodeAND</a>, &<a class="code" href="emulator_8c.html#a54c12a24203abe192fe4f727ea9ffe60">opcodeOR</a>,</div>
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<div class="line"> &<a class="code" href="emulator_8c.html#a501fe22548fd568d37522ba76ff2c1e7">opcodeADD</a>, &<a class="code" href="emulator_8c.html#a3ead6beddb4488ab700a81968e30e11c">opcodeSUB</a>, &<a class="code" href="emulator_8c.html#a3cdb2ee632bc1b19d885c26b044d76ae">opcodeSHL</a>, &<a class="code" href="emulator_8c.html#a6f1fa1ff65a606afddb458fcd64449cf">opcodeSHR</a>,</div>
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<div class="line"> &<a class="code" href="emulator_8c.html#a734105640ec0f0c1e6dc8c5384b2d1d0">opcodeJMP</a>, &<a class="code" href="emulator_8c.html#aeb406b3428b5429249ab2c7e3d7bcc3c">opcodePRT</a>}</div>
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<div class="ttc" id="emulator_8c_html_a734105640ec0f0c1e6dc8c5384b2d1d0"><div class="ttname"><a href="emulator_8c.html#a734105640ec0f0c1e6dc8c5384b2d1d0">opcodeJMP</a></div><div class="ttdeci">int opcodeJMP(char *opcode, char *arg1, char *arg2)</div><div class="ttdef"><b>Definition:</b> emulator.c:291</div></div>
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<div class="ttc" id="emulator_8c_html_a54c12a24203abe192fe4f727ea9ffe60"><div class="ttname"><a href="emulator_8c.html#a54c12a24203abe192fe4f727ea9ffe60">opcodeOR</a></div><div class="ttdeci">int opcodeOR(char *opcode, char *arg1, char *arg2)</div><div class="ttdef"><b>Definition:</b> emulator.c:172</div></div>
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<div class="ttc" id="emulator_8c_html_a6f1fa1ff65a606afddb458fcd64449cf"><div class="ttname"><a href="emulator_8c.html#a6f1fa1ff65a606afddb458fcd64449cf">opcodeSHR</a></div><div class="ttdeci">int opcodeSHR(char *opcode, char *arg1, char *arg2)</div><div class="ttdef"><b>Definition:</b> emulator.c:268</div></div>
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<div class="ttc" id="emulator_8c_html_a3ead6beddb4488ab700a81968e30e11c"><div class="ttname"><a href="emulator_8c.html#a3ead6beddb4488ab700a81968e30e11c">opcodeSUB</a></div><div class="ttdeci">int opcodeSUB(char *opcode, char *arg1, char *arg2)</div><div class="ttdef"><b>Definition:</b> emulator.c:220</div></div>
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<div class="ttc" id="emulator_8c_html_aeb406b3428b5429249ab2c7e3d7bcc3c"><div class="ttname"><a href="emulator_8c.html#aeb406b3428b5429249ab2c7e3d7bcc3c">opcodePRT</a></div><div class="ttdeci">int opcodePRT(char *opcode, char *arg1, char *arg2)</div><div class="ttdef"><b>Definition:</b> emulator.c:311</div></div>
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<div class="ttc" id="emulator_8c_html_a434bd1e8b4e45503586891e565138b84"><div class="ttname"><a href="emulator_8c.html#a434bd1e8b4e45503586891e565138b84">opcodeAND</a></div><div class="ttdeci">int opcodeAND(char *opcode, char *arg1, char *arg2)</div><div class="ttdef"><b>Definition:</b> emulator.c:148</div></div>
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<div class="ttc" id="emulator_8c_html_a501fe22548fd568d37522ba76ff2c1e7"><div class="ttname"><a href="emulator_8c.html#a501fe22548fd568d37522ba76ff2c1e7">opcodeADD</a></div><div class="ttdeci">int opcodeADD(char *opcode, char *arg1, char *arg2)</div><div class="ttdef"><b>Definition:</b> emulator.c:196</div></div>
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<div class="ttc" id="emulator_8c_html_a5d6aac425624196dcd0d278760270d00"><div class="ttname"><a href="emulator_8c.html#a5d6aac425624196dcd0d278760270d00">opcodeSET</a></div><div class="ttdeci">int opcodeSET(char *opcode, char *arg1, char *arg2)</div><div class="ttdef"><b>Definition:</b> emulator.c:124</div></div>
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<div class="ttc" id="emulator_8c_html_a00e5e1b7c08d6368342756805800133b"><div class="ttname"><a href="emulator_8c.html#a00e5e1b7c08d6368342756805800133b">opcodeNOP</a></div><div class="ttdeci">int opcodeNOP(char *opcode, char *arg1, char *arg2)</div><div class="ttdef"><b>Definition:</b> emulator.c:107</div></div>
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<div class="ttc" id="emulator_8c_html_a3cdb2ee632bc1b19d885c26b044d76ae"><div class="ttname"><a href="emulator_8c.html#a3cdb2ee632bc1b19d885c26b044d76ae">opcodeSHL</a></div><div class="ttdeci">int opcodeSHL(char *opcode, char *arg1, char *arg2)</div><div class="ttdef"><b>Definition:</b> emulator.c:244</div></div>
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</div><!-- fragment -->
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</div>
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<a class="anchor" id="a50bb3c6ef84bb338f7185fb9ded09fe7"></a>
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<td class="memname">const char* opcodeStr[]</td>
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</table>
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</div><div class="memdoc">
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<b>Initial value:</b><div class="fragment"><div class="line">= {<span class="stringliteral">"NOP"</span>, <span class="stringliteral">"SET"</span>, <span class="stringliteral">"AND"</span>, <span class="stringliteral">"OR"</span>, <span class="stringliteral">"ADD"</span>,</div>
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<div class="line"> <span class="stringliteral">"SUB"</span>, <span class="stringliteral">"SHL"</span>, <span class="stringliteral">"SHR"</span>, <span class="stringliteral">"JMP"</span>, <span class="stringliteral">"PRT"</span>}</div>
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</div><!-- fragment -->
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</div>
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</div>
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</div><!-- contents -->
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