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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 str and strb with different indexing modes.           //
//                                                              //
//  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:
 
        /* Store single Byte */
        ldr     r0,  StoreBase
        add     r0,  r0, #4
        mov     r4,  #0
        str     r4,  [r0]
        ldr     r1,  Data1
        strb    r1, [r0]
 
        and     r3, r1, #0xff
        ldr     r2, [r0]
        cmp     r3, r2
        movne   r10, #10   @ error number
        bne     testfail
 
        /* Store Byte at address 1, 2 and 3 */
        ldr     r0,  StoreBase
        add     r0,  r0, #8
        mov     r4,  #0
        @ start by writing a word of 0 to the memory location
        str     r4, [r0], #1
        ldr     r1,  Data1
 
        @ then store byte 0 in r1 to 3 positions
        @ in the memory location
        strb    r1, [r0], #1
        strb    r1, [r0], #1
        strb    r1, [r0], #1
 
        @ load back the memory location and check its contents
        ldr     r0,  StoreBase
        ldr     r2,  [r0, #8]
        ldr     r3,  Data3
        cmp     r2, r3
        movne   r10, #20   @ error number
        bne     testfail
 
        /* Reverse order of bytes */
        @ read in Data1 and store it out to
        @ StoreBase + 12, reversing the order
        @ of the bytes
        ldr     r2,  StoreBase
        add     r2, r2, #12
        ldr     r1,  Data1
 
        @ store byte 3
        mov     r1, r1, ror #24
        strb    r1, [r2], #1
 
        @ store byte 2
        mov     r1, r1, ror #24
        strb    r1, [r2], #1
 
        @ store byte 1
        mov     r1, r1, ror #24
        strb    r1, [r2], #1
 
        @ store byte 0
        mov     r1, r1, ror #24
        strb    r1, [r2], #1
 
        ldr     r2,  StoreBase
        add     r2, r2, #12
        ldr     r3, [r2]
        ldr     r4, Data4
        cmp     r3, r4
        movne   r10, #30
        bne     testfail
 
        /* Store word */
        ldr     r0,  StoreBase
        ldr     r1,  Data1
        str     r1, [r0]
 
        ldr     r2, [r0]
        cmp     r1, r2
        movne   r10, #50   @ error number
        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
AdrData1:       .word  Data1
AdrData2:       .word  Data2
StoreBase:      .word  0x800
Data1:          .word  0x12345678
Data2:          .word  0xffccbbaa
Data3:          .word  0x78787800
Data4:          .word  0x78563412
 
/* ========================================================================= */
/* ========================================================================= */
 
 

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 str and strb with different indexing modes. //`
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			`/* Store single Byte */`
48			`ldr r0, StoreBase`
49			`add r0, r0, #4`
50			`mov r4, #0`
51			`str r4, [r0]`
52			`ldr r1, Data1`
53			`strb r1, [r0]`
54
55			`and r3, r1, #0xff`
56			`ldr r2, [r0]`
57			`cmp r3, r2`
58			`movne r10, #10 @ error number`
59			`bne testfail`
60
61			`/* Store Byte at address 1, 2 and 3 */`
62			`ldr r0, StoreBase`
63			`add r0, r0, #8`
64			`mov r4, #0`
65			`@ start by writing a word of 0 to the memory location`
66			`str r4, [r0], #1`
67			`ldr r1, Data1`
68
69			`@ then store byte 0 in r1 to 3 positions`
70			`@ in the memory location`
71			`strb r1, [r0], #1`
72			`strb r1, [r0], #1`
73			`strb r1, [r0], #1`
74
75			`@ load back the memory location and check its contents`
76			`ldr r0, StoreBase`
77			`ldr r2, [r0, #8]`
78			`ldr r3, Data3`
79			`cmp r2, r3`
80			`movne r10, #20 @ error number`
81			`bne testfail`
82
83			`/* Reverse order of bytes */`
84			`@ read in Data1 and store it out to`
85			`@ StoreBase + 12, reversing the order`
86			`@ of the bytes`
87			`ldr r2, StoreBase`
88			`add r2, r2, #12`
89			`ldr r1, Data1`
90
91			`@ store byte 3`
92			`mov r1, r1, ror #24`
93			`strb r1, [r2], #1`
94
95			`@ store byte 2`
96			`mov r1, r1, ror #24`
97			`strb r1, [r2], #1`
98
99			`@ store byte 1`
100			`mov r1, r1, ror #24`
101			`strb r1, [r2], #1`
102
103			`@ store byte 0`
104			`mov r1, r1, ror #24`
105			`strb r1, [r2], #1`
106
107			`ldr r2, StoreBase`
108			`add r2, r2, #12`
109			`ldr r3, [r2]`
110			`ldr r4, Data4`
111			`cmp r3, r4`
112			`movne r10, #30`
113			`bne testfail`
114
115			`/* Store word */`
116			`ldr r0, StoreBase`
117			`ldr r1, Data1`
118			`str r1, [r0]`
119
120			`ldr r2, [r0]`
121			`cmp r1, r2`
122			`movne r10, #50 @ error number`
123			`bne testfail`
124
125
126			`@ ------------------------------------------`
127			`@ ------------------------------------------`
128
129			`b testpass`
130
131			`testfail:`
132			`ldr r11, AdrTestStatus`
133			`str r10, [r11]`
134			`b testfail`
135
136			`testpass:`
137			`ldr r11, AdrTestStatus`
138			`mov r10, #17`
139			`str r10, [r11]`
140			`b testpass`
141
142
143			`/* Write 17 to this address to generate a Test Passed message */`
144			`AdrTestStatus: .word ADR_AMBER_TEST_STATUS`
145			`AdrData1: .word Data1`
146			`AdrData2: .word Data2`
147			`StoreBase: .word 0x800`
148			`Data1: .word 0x12345678`
149			`Data2: .word 0xffccbbaa`
150			`Data3: .word 0x78787800`
151			`Data4: .word 0x78563412`
152
153			`/* ========================================================================= */`
154			`/* ========================================================================= */`
155
156

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[/] [amber/] [trunk/] [hw/] [tests/] [strb.S] - Blame information for rev 20