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Last change
on this file since 67 was 2, checked in by Rick van der Zwet, 15 years ago |
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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
set to
*
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File size:
890 bytes
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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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