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[/] [amber/] [trunk/] [hw/] [tests/] [ldm_stm_onetwo.S] - Rev 66
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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 ldm and stm of single registers with cache enabled. //
// Tests ldm and stm of 2 registers with cache enabled. //
// //
// 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:
@ Run through the test 4 times
@ 1 - cache off
@ 2 - cache on but empty
@ 3 - cache on and loaded
@ 4 - same as 3
mov r10, #400
@ stm 1 -------------------------------------
1: mov r0, #0x1000
mov r1, r0
ldr r2, Data2
stmia r1!, {r2}
ldr r3, [r0], #4
@ Check that the address pointers were both incremented correctly
cmp r0, r1
addne r10, r10, #1
bne testfail
@ Check that the correct value was saved to memory
cmp r2, r3
addne r10, r10, #2
bne testfail
@ ldm 1 -------------------------------------
mov r0, #0x1000
mov r1, r0
ldr r2, Data2
str r2, [r1], #4
ldmia r0!, {r3}
@ Check that the address pointers were both incremented correctly
cmp r0, r1
addne r10, r10, #3
bne testfail
@ Check that the correct value was saved to memory
cmp r2, r3
addne r10, r10, #4
bne testfail
@ ldm 1, pc -------------------------------------
mov r0, #0x1000
mov r1, r0
ldr r2, =jpc1
str r2, [r1], #4
ldmia r0!, {pc}
b testfail
b testfail
b testfail
b testfail
jpc1: b 2f
b testfail
b testfail
b testfail
b testfail
@ Check that the address pointers were both incremented correctly
2: cmp r0, r1
addne r10, r10, #5
bne testfail
@ stm 2 -------------------------------------
mov r0, #0x1000
mov r1, r0
mov r4, #0x33
mov r6, #0x44
stmia r1!, {r4, r6}
ldr r7, [r0], #4
ldr r8, [r0], #4
@ Check that the address pointers were both incremented correctly
cmp r0, r1
addne r10, r10, #6
bne testfail
@ Check that the correct value was saved to memory
cmp r4, r7
addne r10, r10, #7
bne testfail
cmp r6, r8
addne r10, r10, #8
bne testfail
@ ldm 2 -------------------------------------
mov r0, #0x1000
mov r1, r0
mov r4, #0x33
mov r5, #0x44
str r4, [r0], #4
str r5, [r0], #4
ldmia r1!, {r6, r7}
@ Check that the address pointers were both incremented correctly
cmp r0, r1
addne r10, r10, #9
bne testfail
@ Check that the correct value was saved to memory
cmp r4, r6
addne r10, r10, #10
bne testfail
cmp r5, r7
addne r10, r10, #11
bne testfail
@ ldm 2, pc -------------------------------------
mov r0, #0x1000
mov r1, r0
mov r4, #0x33
ldr r5, =jpc2
str r4, [r0], #4
str r5, [r0], #4
ldmia r1!, {r6, pc}
b testfail
b testfail
b testfail
b testfail
b testfail
jpc2: b 2f
b testfail
b testfail
b testfail
b testfail
b testfail
@ Check that the address pointers were both incremented correctly
2: cmp r0, r1
addne r10, r10, #12
bne testfail
@ ---------------------
@ Enable the cache
@ ---------------------
mvn r13, #0
mcr 15, 0, r13, cr3, cr13, 0 @ cacheable area
mov r13, #1
mcr 15, 0, r13, cr2, cr13, 0 @ cache enable
subs r10, r10, #100
bne 1b
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
AdrHiBootBase: .word ADR_HIBOOT_BASE
Data1: .word 0x3
.word 0x4
.word 0x5
.word 0x6
.word 0x7
Data2: .word 0x44332211
Data3: .word 0x12345678
/* ========================================================================= */
/* ========================================================================= */
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