Last change
on this file since 153 was 2, checked in by Rick van der Zwet, 15 years ago |
Initial import of data of old repository ('data') worth keeping (e.g. tracking
means of URL access statistics)
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Property svn:executable
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File size:
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1 | /* Author : Rick van der Zwet
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2 | * S-number : 0433373
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3 | * Version : $Id: imm.c 365 2007-12-03 08:54:04Z rick $
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4 | * Copyright : FreeBSD Licence
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5 | * Description : MIPS simulator. Main module
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6 | */
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7 |
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8 | #include <stdlib.h>
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9 | #include <stdio.h>
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10 | #include <sysexits.h>
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11 | #include "sim.h"
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12 | #include "imm.h"
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13 | #include "alu.h"
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14 |
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15 | word
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16 | imm_call(const word in, const imm_control_t action)
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17 | {
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18 | word out = 0;
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19 | switch (action)
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20 | {
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21 | case S16:
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22 | out = alu_sra(in << 16, 16);
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23 | break;
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24 | case SSA:
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25 | out = alu_sra(in << 21, 27);
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26 | break;
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27 | case U26:
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28 | out = in & 0x03FFFFFF;
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29 | break;
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30 | case Z16:
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31 | out = in & 0x0000FFFF;
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32 | break;
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33 | case S16x4:
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34 | out = alu_sra(in << 16, 14);
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35 | break;
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36 | default:
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37 | fprintf(stderr, "IMM action '%i' not implmented\n", action);
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38 | exit(EX_SOFTWARE);
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39 | break;
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40 | };
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41 | return (out);
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42 | }
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