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/*****************************************************************
//                                                              //
//  Amber 2 Core Instruction Test                               //
//                                                              //
//  This file is part of the Amber project                      //
//  http://www.opencores.org/project,amber                      //
//                                                              //
//  Description                                                 //
//  Tests add                                                   //
//                                                              //
//  Author(s):                                                  //
//      - Conor Santifort, csantifort.amber@gmail.com           //
//                                                              //
//////////////////////////////////////////////////////////////////
//                                                              //
// 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 "amber_registers.h"
 
        .section .text
        .globl  main
main:
 
/* 3 + 1 */
        mov     r1, #3
        mov     r2, #1
        add     r3, r1, r2
        cmp     r3, #4
        movne   r10, #10
        bne     testfail
 
/* 0 + 0 */
        mov     r4, #0
        mov     r5, #0
        add     r6, r5, r4
        cmp     r6, #0
        movne   r10, #20
        bne     testfail
 
/* 0 + -1 */
        mov     r7, #0
        mov     r8, #-1
        add     r9, r7, r8
        cmp     r9, #-1
        movne   r10, #30
        bne     testfail
 
/* -1 + 0 */
        mov     r1, #-1
        mov     r2, #0
        add     r3, r1, r2
        cmp     r3, #-1
        movne   r10, #40
        bne     testfail
 
/* -1 + -1 */
        mov     r4, #-1
        mov     r5, #-1
        add     r6, r4, r5
        cmp     r6, #-2
        movne   r10, #50
        bne     testfail
 
/* -1 + -255 */
        mov     r7, #-1
        mov     r8, #-255
        add     r9, r7, r8
        cmp     r9, #-256
        movne   r10, #60
        bne     testfail
 
/* 1 + 0x7fffffff */
        ldr     r1, MaxPos
        mov     r2, #1
        adds    r3, r1, r2
        /* this should generate an overflow */
        /* so if the V flag is Clear then fail */
        bvc     testfail
        ldr     r0, MaxNeg
        cmp     r0, r3
        movne   r10, #70
        bne     testfail
        b       testpass
 
testfail:
        ldr     r11, AdrTestStatus
        str     r10, [r11]
        b       testfail
 
testpass:
        ldr     r11, AdrTestStatus
        mov     r10, #17
        str     r10, [r11]
        b       testpass
 
 
/* Write 17 to this address to generate a Test Passed message */
AdrTestStatus:  .word  ADR_AMBER_TEST_STATUS
MaxPos:         .word  0x7fffffff
MaxNeg:         .word  0x80000000
 
/* ========================================================================= */
/* ========================================================================= */
 
 

Line No.	Rev	Author	Line
1	2	csantifort	`/*****************************************************************`
2			`// //`
3			`// Amber 2 Core Instruction Test //`
4			`// //`
5			`// This file is part of the Amber project //`
6			`// http://www.opencores.org/project,amber //`
7			`// //`
8			`// Description //`
9			`// Tests add //`
10			`// //`
11			`// Author(s): //`
12			`// - Conor Santifort, csantifort.amber@gmail.com //`
13			`// //`
14			`//////////////////////////////////////////////////////////////////`
15			`// //`
16			`// Copyright (C) 2010 Authors and OPENCORES.ORG //`
17			`// //`
18			`// This source file may be used and distributed without //`
19			`// restriction provided that this copyright statement is not //`
20			`// removed from the file and that any derivative work contains //`
21			`// the original copyright notice and the associated disclaimer. //`
22			`// //`
23			`// This source file is free software; you can redistribute it //`
24			`// and/or modify it under the terms of the GNU Lesser General //`
25			`// Public License as published by the Free Software Foundation; //`
26			`// either version 2.1 of the License, or (at your option) any //`
27			`// later version. //`
28			`// //`
29			`// This source is distributed in the hope that it will be //`
30			`// useful, but WITHOUT ANY WARRANTY; without even the implied //`
31			`// warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR //`
32			`// PURPOSE. See the GNU Lesser General Public License for more //`
33			`// details. //`
34			`// //`
35			`// You should have received a copy of the GNU Lesser General //`
36			`// Public License along with this source; if not, download it //`
37			`// from http://www.opencores.org/lgpl.shtml //`
38			`// //`
39			`*****************************************************************/`
40
41			`#include "amber_registers.h"`
42
43			`.section .text`
44			`.globl main`
45			`main:`
46
47			`/* 3 + 1 */`
48			`mov r1, #3`
49			`mov r2, #1`
50			`add r3, r1, r2`
51			`cmp r3, #4`
52			`movne r10, #10`
53			`bne testfail`
54
55			`/* 0 + 0 */`
56			`mov r4, #0`
57			`mov r5, #0`
58			`add r6, r5, r4`
59			`cmp r6, #0`
60			`movne r10, #20`
61			`bne testfail`
62
63			`/* 0 + -1 */`
64			`mov r7, #0`
65			`mov r8, #-1`
66			`add r9, r7, r8`
67			`cmp r9, #-1`
68			`movne r10, #30`
69			`bne testfail`
70
71			`/* -1 + 0 */`
72			`mov r1, #-1`
73			`mov r2, #0`
74			`add r3, r1, r2`
75			`cmp r3, #-1`
76			`movne r10, #40`
77			`bne testfail`
78
79			`/* -1 + -1 */`
80			`mov r4, #-1`
81			`mov r5, #-1`
82			`add r6, r4, r5`
83			`cmp r6, #-2`
84			`movne r10, #50`
85			`bne testfail`
86
87			`/* -1 + -255 */`
88			`mov r7, #-1`
89			`mov r8, #-255`
90			`add r9, r7, r8`
91			`cmp r9, #-256`
92			`movne r10, #60`
93			`bne testfail`
94
95			`/* 1 + 0x7fffffff */`
96			`ldr r1, MaxPos`
97			`mov r2, #1`
98			`adds r3, r1, r2`
99			`/* this should generate an overflow */`
100			`/* so if the V flag is Clear then fail */`
101			`bvc testfail`
102			`ldr r0, MaxNeg`
103			`cmp r0, r3`
104			`movne r10, #70`
105			`bne testfail`
106			`b testpass`
107
108			`testfail:`
109			`ldr r11, AdrTestStatus`
110			`str r10, [r11]`
111			`b testfail`
112
113			`testpass:`
114			`ldr r11, AdrTestStatus`
115			`mov r10, #17`
116			`str r10, [r11]`
117			`b testpass`
118
119
120			`/* Write 17 to this address to generate a Test Passed message */`
121			`AdrTestStatus: .word ADR_AMBER_TEST_STATUS`
122			`MaxPos: .word 0x7fffffff`
123			`MaxNeg: .word 0x80000000`
124
125			`/* ========================================================================= */`
126			`/* ========================================================================= */`
127
128

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[/] [amber/] [trunk/] [hw/] [tests/] [add.S] - Blame information for rev 2