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[/] [amber/] [trunk/] [hw/] [tests/] [ldr.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 lrd and ldrb                                          //
//                                                              //
//  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:
 
/* Load Byte 0 */
        ldr     r0, AdrData1
        ldrb    r1, [r0]
        ldr     r2, Data2
        cmp     r1, r2
        movne   r10, #10
        bne     testfail
 
/* Load Byte 1 */
        add     r0, r0, #1
        ldrb    r3, [r0]
        ldr     r4, Data3
        cmp     r3, r4
        movne   r10, #20
        bne     testfail
 
/* Load Byte 2 */
        add     r0, r0, #1
        ldrb    r5, [r0]
        ldr     r6, Data4
        cmp     r5, r6
        movne   r10, #30
        bne     testfail
 
/* Load Byte 3 */
        add     r0, r0, #1
        ldrb    r7, [r0]
        ldr     r8, Data5
        cmp     r7, r8
        movne   r10, #40
        bne     testfail
 
 
/* Immediate offset  */
        ldr     r0,  AdrData1
        ldr     r1, [r0, #4]
        ldr     r3, Data2
        cmp     r1, r3
        movne   r10, #50
        bne     testfail
 
        @ Check that r0 is not altered
        ldr     r8,  AdrData1
        cmp     r0, r8
        movne   r10, #60
        bne     testfail
 
        /* test negative offset */
        ldr     r0,  AdrData8
        ldr     r2, [r0, #-12]
        ldr     r3, Data5
        cmp     r2, r3
        movne   r10, #70
        bne     testfail
 
        @ Check that r0 is not altered
        ldr     r8, AdrData8
        cmp     r0, r8
        movne   r10, #80
        bne     testfail
 
 
/* Immediate pre-indexed  */
        ldr     r0,  AdrData1
        ldr     r1, [r0, #4]!
 
        @ check that r0 was incremented correctly
        ldr     r8,  AdrData1
        add     r8, r8, #4
        cmp     r0, r8
        movne   r10, #90
        bne     testfail
 
        @ check that correct value was loaded into r1
        ldr     r2, Data2
        cmp     r1, r2
        movne   r10, #100
        bne     testfail
 
 
/* Immediate post-indexed  */
        ldr     r0,  AdrData1
        ldr     r1, [r0], #4
        ldr     r2, [r0], #4
 
        ldr     r3, Data1
        cmp     r1, r3
        movne   r10, #110
        bne     testfail
 
        ldr     r4, Data2
        cmp     r2, r4
        movne   r10, #120
        bne     testfail
 
        ldr     r8,  AdrData1
        add     r8, r8, #8
        cmp     r0, r8
        movne   r10, #130
        bne     testfail
 
 
/* Register offset  */
        ldr     r0,  AdrData1
        mov     r1,  #1
        ldr     r2, [r0, r1]
        ldr     r3, Data7
        cmp     r2, r3
        movne   r10, #140
        bne     testfail
 
 
/* Register offset pre-indexed */
        ldr     r0,  AdrData1
        mov     r1,  #3
        ldr     r2, [r0, r1]!
 
        ldr     r3, Data8
        cmp     r2, r3
        movne   r10, #150
        bne     testfail
 
        ldr     r4,  AdrData1
        add     r4,  r4, #3
        cmp     r0, r4
 
 
/* Register offset post-indexed */
        ldr     r5,  AdrData1
        mov     r6,  #2
        ldr     r7, [r5], -r6
 
        ldr     r8, Data1
        cmp     r7, r8
        movne   r10, #160
        bne     testfail
 
        ldr     r9,  AdrData1
        sub     r9, r9, #2
        cmp     r5, r9
        bne     testfail
 
 
/* Scaled Register offset */
        ldr     r0,  AdrData1
        mov     r1, #2
        /* r2 <- contents of 'AdrData1 + 8' */
        ldr     r2, [r0, r1, lsl #2]
 
        ldr     r3, Data3
        cmp     r2, r3
        movne   r10, #170
        bne     testfail
 
 
/* Scaled Register offset pre-indexed */
        ldr     r4,  AdrData1
        mov     r5, #8
        /* r6 <- contents of 'AdrData1 + 4' */
        /* r4 <- AdrData1 + 4 */
        ldr     r6, [r4, r5, lsr #1]!
 
        ldr     r8,  Data2
        cmp     r6, r8
        movne   r10, #180
        bne     testfail
 
        ldr     r7,  AdrData1
        add     r7,  r7, #4
        cmp     r4, r7
        movne   r10, #190
        bne     testfail
 
 
/* Scaled Register offset post-indexed */
        ldr     r0,  AdrData8
        mov     r1, #1
        ldr     r2, [r0], -r1, ror #28
 
        ldr     r3, Data8
        cmp     r2, r3
        movne   r10, #200
        bne     testfail
 
        ldr     r4, AdrData8
        sub     r4, r4, #16
        cmp     r0, r4
        movne   r10, #210
        bne     testfail
 
 
/* Test unaligned word loads */
        ldr     r0, Data9
        mov     r1, #0x200
        str     r0, [r1]
 
        ldr     r2, [r1], #1
        ldr     r3, [r1], #1
        ldr     r4, [r1], #1
        ldr     r5, [r1], #1
 
        cmp     r2, r0
        movne   r10, #220
        bne     testfail
 
        mov     r6, r0, ror #8
        cmp     r6, r3
        movne   r10, #230
        bne     testfail
 
        mov     r7, r0, ror #16
        cmp     r7, r4
        movne   r10, #240
        bne     testfail
 
        mov     r8, r0, ror #24
        cmp     r8, r5
        movne   r10, #250
        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
AdrData8:       .word  Data8
Data1:          .word  0x12345678
Data2:          .word  0x00000078
Data3:          .word  0x00000056
Data4:          .word  0x00000034
Data5:          .word  0x00000012
Data6:          .word  0xfecba987
Data7:          .word  0x78123456
Data8:          .word  0x34567812
Data9:          .word  0x33221100
 
/* ========================================================================= */
/* ========================================================================= */
 
 

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

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 lrd and ldrb //`
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			`/* Load Byte 0 */`
48			`ldr r0, AdrData1`
49			`ldrb r1, [r0]`
50			`ldr r2, Data2`
51			`cmp r1, r2`
52			`movne r10, #10`
53			`bne testfail`
54
55			`/* Load Byte 1 */`
56			`add r0, r0, #1`
57			`ldrb r3, [r0]`
58			`ldr r4, Data3`
59			`cmp r3, r4`
60			`movne r10, #20`
61			`bne testfail`
62
63			`/* Load Byte 2 */`
64			`add r0, r0, #1`
65			`ldrb r5, [r0]`
66			`ldr r6, Data4`
67			`cmp r5, r6`
68			`movne r10, #30`
69			`bne testfail`
70
71			`/* Load Byte 3 */`
72			`add r0, r0, #1`
73			`ldrb r7, [r0]`
74			`ldr r8, Data5`
75			`cmp r7, r8`
76			`movne r10, #40`
77			`bne testfail`
78
79
80			`/* Immediate offset */`
81			`ldr r0, AdrData1`
82			`ldr r1, [r0, #4]`
83			`ldr r3, Data2`
84			`cmp r1, r3`
85			`movne r10, #50`
86			`bne testfail`
87
88			`@ Check that r0 is not altered`
89			`ldr r8, AdrData1`
90			`cmp r0, r8`
91			`movne r10, #60`
92			`bne testfail`
93
94			`/* test negative offset */`
95			`ldr r0, AdrData8`
96			`ldr r2, [r0, #-12]`
97			`ldr r3, Data5`
98			`cmp r2, r3`
99			`movne r10, #70`
100			`bne testfail`
101
102			`@ Check that r0 is not altered`
103			`ldr r8, AdrData8`
104			`cmp r0, r8`
105			`movne r10, #80`
106			`bne testfail`
107
108
109			`/* Immediate pre-indexed */`
110			`ldr r0, AdrData1`
111			`ldr r1, [r0, #4]!`
112
113			`@ check that r0 was incremented correctly`
114			`ldr r8, AdrData1`
115			`add r8, r8, #4`
116			`cmp r0, r8`
117			`movne r10, #90`
118			`bne testfail`
119
120			`@ check that correct value was loaded into r1`
121			`ldr r2, Data2`
122			`cmp r1, r2`
123			`movne r10, #100`
124			`bne testfail`
125
126
127			`/* Immediate post-indexed */`
128			`ldr r0, AdrData1`
129			`ldr r1, [r0], #4`
130			`ldr r2, [r0], #4`
131
132			`ldr r3, Data1`
133			`cmp r1, r3`
134			`movne r10, #110`
135			`bne testfail`
136
137			`ldr r4, Data2`
138			`cmp r2, r4`
139			`movne r10, #120`
140			`bne testfail`
141
142			`ldr r8, AdrData1`
143			`add r8, r8, #8`
144			`cmp r0, r8`
145			`movne r10, #130`
146			`bne testfail`
147
148
149			`/* Register offset */`
150			`ldr r0, AdrData1`
151			`mov r1, #1`
152			`ldr r2, [r0, r1]`
153			`ldr r3, Data7`
154			`cmp r2, r3`
155			`movne r10, #140`
156			`bne testfail`
157
158
159			`/* Register offset pre-indexed */`
160			`ldr r0, AdrData1`
161			`mov r1, #3`
162			`ldr r2, [r0, r1]!`
163
164			`ldr r3, Data8`
165			`cmp r2, r3`
166			`movne r10, #150`
167			`bne testfail`
168
169			`ldr r4, AdrData1`
170			`add r4, r4, #3`
171			`cmp r0, r4`
172
173
174			`/* Register offset post-indexed */`
175			`ldr r5, AdrData1`
176			`mov r6, #2`
177			`ldr r7, [r5], -r6`
178
179			`ldr r8, Data1`
180			`cmp r7, r8`
181			`movne r10, #160`
182			`bne testfail`
183
184			`ldr r9, AdrData1`
185			`sub r9, r9, #2`
186			`cmp r5, r9`
187			`bne testfail`
188
189
190			`/* Scaled Register offset */`
191			`ldr r0, AdrData1`
192			`mov r1, #2`
193			`/* r2 <- contents of 'AdrData1 + 8' */`
194			`ldr r2, [r0, r1, lsl #2]`
195
196			`ldr r3, Data3`
197			`cmp r2, r3`
198			`movne r10, #170`
199			`bne testfail`
200
201
202			`/* Scaled Register offset pre-indexed */`
203			`ldr r4, AdrData1`
204			`mov r5, #8`
205			`/* r6 <- contents of 'AdrData1 + 4' */`
206			`/* r4 <- AdrData1 + 4 */`
207			`ldr r6, [r4, r5, lsr #1]!`
208
209			`ldr r8, Data2`
210			`cmp r6, r8`
211			`movne r10, #180`
212			`bne testfail`
213
214			`ldr r7, AdrData1`
215			`add r7, r7, #4`
216			`cmp r4, r7`
217			`movne r10, #190`
218			`bne testfail`
219
220
221			`/* Scaled Register offset post-indexed */`
222			`ldr r0, AdrData8`
223			`mov r1, #1`
224			`ldr r2, [r0], -r1, ror #28`
225
226			`ldr r3, Data8`
227			`cmp r2, r3`
228			`movne r10, #200`
229			`bne testfail`
230
231			`ldr r4, AdrData8`
232			`sub r4, r4, #16`
233			`cmp r0, r4`
234			`movne r10, #210`
235			`bne testfail`
236
237
238			`/* Test unaligned word loads */`
239			`ldr r0, Data9`
240			`mov r1, #0x200`
241			`str r0, [r1]`
242
243			`ldr r2, [r1], #1`
244			`ldr r3, [r1], #1`
245			`ldr r4, [r1], #1`
246			`ldr r5, [r1], #1`
247
248			`cmp r2, r0`
249			`movne r10, #220`
250			`bne testfail`
251
252			`mov r6, r0, ror #8`
253			`cmp r6, r3`
254			`movne r10, #230`
255			`bne testfail`
256
257			`mov r7, r0, ror #16`
258			`cmp r7, r4`
259			`movne r10, #240`
260			`bne testfail`
261
262			`mov r8, r0, ror #24`
263			`cmp r8, r5`
264			`movne r10, #250`
265			`bne testfail`
266
267			`b testpass`
268
269
270			`testfail:`
271			`ldr r11, AdrTestStatus`
272			`str r10, [r11]`
273			`b testfail`
274
275			`testpass:`
276			`ldr r11, AdrTestStatus`
277			`mov r10, #17`
278			`str r10, [r11]`
279			`b testpass`
280
281
282			`/* Write 17 to this address to generate a Test Passed message */`
283			`AdrTestStatus: .word ADR_AMBER_TEST_STATUS`
284			`AdrData1: .word Data1`
285			`AdrData8: .word Data8`
286			`Data1: .word 0x12345678`
287			`Data2: .word 0x00000078`
288			`Data3: .word 0x00000056`
289			`Data4: .word 0x00000034`
290			`Data5: .word 0x00000012`
291			`Data6: .word 0xfecba987`
292			`Data7: .word 0x78123456`
293			`Data8: .word 0x34567812`
294			`Data9: .word 0x33221100`
295
296			`/* ========================================================================= */`
297			`/* ========================================================================= */`
298
299