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/*
        OR1200 MAC test
 
        Very basic, testing simple instructions and multiplication,
        accumulation values
 
        Julius Baxter, julius.baxter@orsoc.se
 
*/
//////////////////////////////////////////////////////////////////////
////                                                              ////
//// Copyright (C) 2010 Authors and OPENCORES.ORG                 ////
////                                                              ////
//// This source file may be used and distributed without         ////
//// restriction provided that this copyright statement is not    ////
//// removed from the file and that any derivative work contains  ////
//// the original copyright notice and the associated disclaimer. ////
////                                                              ////
//// This source file is free software; you can redistribute it   ////
//// and/or modify it under the terms of the GNU Lesser General   ////
//// Public License as published by the Free Software Foundation; ////
//// either version 2.1 of the License, or (at your option) any   ////
//// later version.                                               ////
////                                                              ////
//// This source 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 Lesser General Public License for more ////
//// details.                                                     ////
////                                                              ////
//// You should have received a copy of the GNU Lesser General    ////
//// Public License along with this source; if not, download it   ////
//// from http://www.opencores.org/lgpl.shtml                     ////
////                                                              ////
//////////////////////////////////////////////////////////////////////
 
 
#include "spr-defs.h"
#include "board.h"
#include "or1200-defines.h"
 
// Check MAC unit is enabled before trying to run this test
#ifndef OR1200_MAC_IMPLEMENTED
# error
# error No MAC unit detected. This test requires hardware MAC support
# error
#endif
 
 
/* =================================================== [ exceptions ] === */
        .section .vectors, "ax"
 
 
/* ---[ 0x100: RESET exception ]----------------------------------------- */
        .org 0x100
        l.movhi r0, 0
        /* Clear status register */
        l.ori r1, r0, SPR_SR_SM
        l.mtspr r0, r1, SPR_SR
        /* Clear timer  */
        l.mtspr r0, r0, SPR_TTMR
 
        /* Jump to program initialisation code */
        .global _start
        l.movhi r4, hi(_start)
        l.ori r4, r4, lo(_start)
        l.jr    r4
        l.nop
 
        .org 0x600
        l.nop 0x1
 
        .org 0x700
        l.nop 0x1
 
 
/* =================================================== [ text ] === */
        .section .text
 
/* =================================================== [ start ] === */
 
        .global _start
_start:
        // Kick off test
        l.jal   _main
        l.nop
 
 
 
/* =================================================== [ main ] === */
 
        .global _main
_main:
        // First clear MAC
        l.macrc r3
 
        /* Jeremy stuff. A l.maci which should not overflow */
        l.movhi r4,hi(0x00000002)
        l.ori   r4,r4,lo(0x00000002)
 
        l.mtspr r0,r0,SPR_MACHI
        l.mtspr r0,r0,SPR_MACLO
 
        l.maci  r4,0x0002
 
        l.mfspr r3,r0,SPR_MACHI
        l.nop   0x2
        l.nop
        l.mfspr r3,r0,SPR_MACLO
        l.nop   0x2
        l.nop
 
        /* Jeremy stuff. A l.maci which should overflow and be truncated. */
        l.movhi r4,hi(0x7fffffff)
        l.ori   r4,r4,lo(0x7fffffff)
 
        l.mtspr r0,r0,SPR_MACHI
        l.mtspr r0,r0,SPR_MACLO
 
        l.maci  r4,0x7fff
 
        l.mfspr r3,r0,SPR_MACHI
        l.nop   0x2
        l.nop
        l.mfspr r3,r0,SPR_MACLO
        l.nop   0x2
        l.nop
        l.nop 0x1

Line No.	Rev	Author	Line
1	397	julius	`/*`
2			`OR1200 MAC test`
3
4			`Very basic, testing simple instructions and multiplication,`
5			`accumulation values`
6
7			`Julius Baxter, julius.baxter@orsoc.se`
8
9			`*/`
10			`//////////////////////////////////////////////////////////////////////`
11			`//// ////`
12			`//// Copyright (C) 2010 Authors and OPENCORES.ORG ////`
13			`//// ////`
14			`//// This source file may be used and distributed without ////`
15			`//// restriction provided that this copyright statement is not ////`
16			`//// removed from the file and that any derivative work contains ////`
17			`//// the original copyright notice and the associated disclaimer. ////`
18			`//// ////`
19			`//// This source file is free software; you can redistribute it ////`
20			`//// and/or modify it under the terms of the GNU Lesser General ////`
21			`//// Public License as published by the Free Software Foundation; ////`
22			`//// either version 2.1 of the License, or (at your option) any ////`
23			`//// later version. ////`
24			`//// ////`
25			`//// This source is distributed in the hope that it will be ////`
26			`//// useful, but WITHOUT ANY WARRANTY; without even the implied ////`
27			`//// warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR ////`
28			`//// PURPOSE. See the GNU Lesser General Public License for more ////`
29			`//// details. ////`
30			`//// ////`
31			`//// You should have received a copy of the GNU Lesser General ////`
32			`//// Public License along with this source; if not, download it ////`
33			`//// from http://www.opencores.org/lgpl.shtml ////`
34			`//// ////`
35			`//////////////////////////////////////////////////////////////////////`
36
37
38			`#include "spr-defs.h"`
39			`#include "board.h"`
40			`#include "or1200-defines.h"`
41
42			`// Check MAC unit is enabled before trying to run this test`
43			`#ifndef OR1200_MAC_IMPLEMENTED`
44			`# error`
45			`# error No MAC unit detected. This test requires hardware MAC support`
46			`# error`
47			`#endif`
48
49
50			`/* =================================================== [ exceptions ] === */`
51			`.section .vectors, "ax"`
52
53
54			`/* ---[ 0x100: RESET exception ]----------------------------------------- */`
55			`.org 0x100`
56			`l.movhi r0, 0`
57			`/* Clear status register */`
58			`l.ori r1, r0, SPR_SR_SM`
59			`l.mtspr r0, r1, SPR_SR`
60			`/* Clear timer */`
61			`l.mtspr r0, r0, SPR_TTMR`
62
63			`/* Jump to program initialisation code */`
64			`.global _start`
65			`l.movhi r4, hi(_start)`
66			`l.ori r4, r4, lo(_start)`
67			`l.jr r4`
68			`l.nop`
69
70			`.org 0x600`
71			`l.nop 0x1`
72
73			`.org 0x700`
74			`l.nop 0x1`
75
76
77			`/* =================================================== [ text ] === */`
78			`.section .text`
79
80			`/* =================================================== [ start ] === */`
81
82			`.global _start`
83			`_start:`
84			`// Kick off test`
85			`l.jal _main`
86			`l.nop`
87
88
89
90			`/* =================================================== [ main ] === */`
91
92			`.global _main`
93			`_main:`
94			`// First clear MAC`
95			`l.macrc r3`
96
97			`/* Jeremy stuff. A l.maci which should not overflow */`
98			`l.movhi r4,hi(0x00000002)`
99			`l.ori r4,r4,lo(0x00000002)`
100
101			`l.mtspr r0,r0,SPR_MACHI`
102			`l.mtspr r0,r0,SPR_MACLO`
103
104			`l.maci r4,0x0002`
105
106			`l.mfspr r3,r0,SPR_MACHI`
107			`l.nop 0x2`
108			`l.nop`
109			`l.mfspr r3,r0,SPR_MACLO`
110			`l.nop 0x2`
111			`l.nop`
112
113			`/* Jeremy stuff. A l.maci which should overflow and be truncated. */`
114			`l.movhi r4,hi(0x7fffffff)`
115			`l.ori r4,r4,lo(0x7fffffff)`
116
117			`l.mtspr r0,r0,SPR_MACHI`
118			`l.mtspr r0,r0,SPR_MACLO`
119
120			`l.maci r4,0x7fff`
121
122			`l.mfspr r3,r0,SPR_MACHI`
123			`l.nop 0x2`
124			`l.nop`
125			`l.mfspr r3,r0,SPR_MACLO`
126			`l.nop 0x2`
127			`l.nop`
128			`l.nop 0x1`

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[/] [openrisc/] [trunk/] [orpsocv2/] [sw/] [tests/] [or1200/] [sim/] [or1200-maci.S] - Blame information for rev 397