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

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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 swp and swpb                                          //
//                                                              //
//  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:
        @ ---------------------
        @ swp     r2, r2, [r0]
        @ ---------------------
        ldr     r0, AdrData1
        mov     r2, #2
        swp     r2, r2, [r0]
 
        @ check the value written to memory
        ldr     r3, Data1
        cmp     r3, #2
        movne   r10, #10
        bne     testfail
 
        @ check the value read from  memory
        ldr     r4, Data4
        cmp     r4, r2
        movne   r10, #20
        bne     testfail
 
 
        @ ---------------------
        @ swpb    r2, r2, [r0]
        @ ---------------------
        ldr     r0, AdrData2
        add     r0, r0, #1
        ldr     r2, Data3
        swpb    r2, r2, [r0]
 
        @ check the value written to memory
        ldr     r3, Data2
        ldr     r4, Data5
        cmp     r3, r4
        movne   r10, #30
        bne     testfail
 
        @ check the value read from to memory
        mov     r5, #0xbb
        cmp     r2, r5
        movne   r10, #40
        bne     testfail
 
        @ ---------------------
        @ Test flow control, skip
        @ ---------------------
        mov     r7, #2
        mov     r8, #3
        cmp     r7, r8
        swpeq   r2, r2, [r0]
        b       check4
 
        @ these should never be executed
        b       testfail
        b       testfail
 
check4:
        @ check that r2 did not change
        cmp     r2, r5
        movne   r10, #50
        bne     testfail
 
 
 
        @ ---------------------
        @ Test flow control, skip first, execute second
        @ ---------------------
        ldr     r9, AdrData6
        mov     r7, #2
        mov     r8, #3
        cmp     r7, r8
        swpeq   r2, r2, [r9]
        swpne   r3, r3, [r9]
        b       check5
 
        @ these should never be executed
        b       testfail
        b       testfail
 
check5:
        @ check that r2 did not change
        cmp     r2, r5
        movne   r10, #60
        bne     testfail
 
        @ check that r3 holds correct value
        ldr     r8, Data7
        cmp     r3, r8
        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
 
 
@ put this data section here so its reachable
@ by the 8-bit immediate offset in LDRH
Data1:          .word  0x12345678
Data2:          .word  0xffccbbaa
Data3:          .word  0x01020304
Data4:          .word  0x12345678
Data5:          .word  0xffcc04aa
Data6:          .word  0x33445566
Data7:          .word  0x33445566
 
/* Write 17 to this address to generate a Test Passed message */
AdrTestStatus:  .word  ADR_AMBER_TEST_STATUS
AdrData1:       .word  Data1
AdrData2:       .word  Data2
AdrData3:       .word  Data3
AdrData4:       .word  Data4
AdrData5:       .word  Data5
AdrData6:       .word  Data6
 
/* ========================================================================= */
/* ========================================================================= */
 
 

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 swp and swpb //`
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			`@ swp r2, r2, [r0]`
48			`@ ---------------------`
49			`ldr r0, AdrData1`
50			`mov r2, #2`
51			`swp r2, r2, [r0]`
52
53			`@ check the value written to memory`
54			`ldr r3, Data1`
55			`cmp r3, #2`
56			`movne r10, #10`
57			`bne testfail`
58
59			`@ check the value read from memory`
60			`ldr r4, Data4`
61			`cmp r4, r2`
62			`movne r10, #20`
63			`bne testfail`
64
65
66			`@ ---------------------`
67			`@ swpb r2, r2, [r0]`
68			`@ ---------------------`
69			`ldr r0, AdrData2`
70			`add r0, r0, #1`
71			`ldr r2, Data3`
72			`swpb r2, r2, [r0]`
73
74			`@ check the value written to memory`
75			`ldr r3, Data2`
76			`ldr r4, Data5`
77			`cmp r3, r4`
78			`movne r10, #30`
79			`bne testfail`
80
81			`@ check the value read from to memory`
82			`mov r5, #0xbb`
83			`cmp r2, r5`
84			`movne r10, #40`
85			`bne testfail`
86
87			`@ ---------------------`
88			`@ Test flow control, skip`
89			`@ ---------------------`
90			`mov r7, #2`
91			`mov r8, #3`
92			`cmp r7, r8`
93			`swpeq r2, r2, [r0]`
94			`b check4`
95
96			`@ these should never be executed`
97			`b testfail`
98			`b testfail`
99
100			`check4:`
101			`@ check that r2 did not change`
102			`cmp r2, r5`
103			`movne r10, #50`
104			`bne testfail`
105
106
107
108			`@ ---------------------`
109			`@ Test flow control, skip first, execute second`
110			`@ ---------------------`
111			`ldr r9, AdrData6`
112			`mov r7, #2`
113			`mov r8, #3`
114			`cmp r7, r8`
115			`swpeq r2, r2, [r9]`
116			`swpne r3, r3, [r9]`
117			`b check5`
118
119			`@ these should never be executed`
120			`b testfail`
121			`b testfail`
122
123			`check5:`
124			`@ check that r2 did not change`
125			`cmp r2, r5`
126			`movne r10, #60`
127			`bne testfail`
128
129			`@ check that r3 holds correct value`
130			`ldr r8, Data7`
131			`cmp r3, r8`
132			`movne r10, #70`
133			`bne testfail`
134
135			`@ ------------------------------------------`
136			`@ ------------------------------------------`
137
138			`b testpass`
139
140			`testfail:`
141			`ldr r11, AdrTestStatus`
142			`str r10, [r11]`
143			`b testfail`
144
145			`testpass:`
146			`ldr r11, AdrTestStatus`
147			`mov r10, #17`
148			`str r10, [r11]`
149			`b testpass`
150
151
152			`@ put this data section here so its reachable`
153			`@ by the 8-bit immediate offset in LDRH`
154			`Data1: .word 0x12345678`
155			`Data2: .word 0xffccbbaa`
156			`Data3: .word 0x01020304`
157			`Data4: .word 0x12345678`
158			`Data5: .word 0xffcc04aa`
159			`Data6: .word 0x33445566`
160			`Data7: .word 0x33445566`
161
162			`/* Write 17 to this address to generate a Test Passed message */`
163			`AdrTestStatus: .word ADR_AMBER_TEST_STATUS`
164			`AdrData1: .word Data1`
165			`AdrData2: .word Data2`
166			`AdrData3: .word Data3`
167			`AdrData4: .word Data4`
168			`AdrData5: .word Data5`
169			`AdrData6: .word Data6`
170
171			`/* ========================================================================= */`
172			`/* ========================================================================= */`
173
174

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