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/***************************************************************
*
* Creation Date: <97/07/24 01:19:19 samuel>
* Time-stamp: <2001/03/30 21:51:15 samuel>
*
* <mac_asm.S>
*
* TESTING ARENA - emulation testing/debugging
*
* These assembly functions are run in emulator mode
* (appears at mac-physical addr 0).
*
* Copyright (C) 1997-2001 Samuel Rydh
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation;
*
**************************************************************/
#include "mol_config.h"
#include "asmdefs.h"
#include "processor.h"
//#define MOLASM_DEBUG
.text
GLOBL(_macprog_start):
/************************************************************************/
/* F U N C T I O N S */
/************************************************************************/
#ifdef MOLASM_DEBUG
#warning ********* MAC ASM ENABLED ***********
/***************************************************
* Timebase / DEC
**************************************************/
.org 0
LOADI r3,0x1000
LOADI r22,0
1: lwz r4,0(r3)
addi r22,r22,1
b 1b
b 0x700
.org 0x700
.long 0
timebase:
li r3,0x2000
li r4,0x1234
mttbu r3
mttbl r4
1: mftbu r5
mftb r6
2:
b 2b
li r5,0x1234 // upper
li r6,0x1000 // lower
1: li r7,0x22
subfc r6,r7,r6
addme r5,r5
b 1b
mftbu r3
mftb r4
b timebase
/***************************************************
* DOZE mode testing
**************************************************/
doze_test:
lis r0,0xffff
mtspr HID0, r0
mfmsr r1
LOADI r2,MSR_POW
lis r3,0xffff
1:
// mtdec r3
addi r8,r8,1
mtmsr r2
b 1b
2:
nop
b 2b
/***************************************************
* FPU testing
**************************************************/
fpu_testing:
li r3,MSR_FP | MSR_FE0 | MSR_FE1
mtmsr r3
bl fp_contents
mflr r3
LOAD_FPR_RANGE fr0,fr31,0,r3
// mtfsf 0xff,fr13
addi r3,r3,1
mffs fr5
mtfsf 0xff,fr5
LOADI r4, 0x2000
1:
// lfd fr0,2000(0)
// lfd fr1,2000(0)
fdiv fr0,fr0,fr1
b 1b
fp_contents:
blrl
.long 0x11111111,0x11111111
.long 0x22222222,0x22222222
.long 0x33333333,0x33333333
.long 0x44444444,0x44444444
.long 0x55555555,0x55555555
.long 0x66666666,0x66666666
.long 0x77777777,0x77777777
.long 0x88888888,0x88888888
.long 0x99999999,0x99999999
.long 0x11111111,0x11111111
.long 0x22222222,0x22222222
.long 0x33333333,0x33333333
.long 0x44444444,0x44444444
.long 0x55555555,0x55555555
.long 0x66666666,0x66666666
.long 0x77777777,0x77777777
.long 0x88888888,0x88888888
.long 0x99999999,0x99999999
.long 0x11111111,0x11111111
.long 0x22222222,0x22222222
.long 0x33333333,0x33333333
.long 0x44444444,0x44444444
.long 0x55555555,0x55555555
.long 0x66666666,0x66666666
.long 0x77777777,0x77777777
.long 0x88888888,0x88888888
.long 0x99999999,0x99999999
.long 0x11111111,0x11111111
.long 0x22222222,0x22222222
.long 0x33333333,0x33333333
.long 0x44444444,0x44444444
.long 0x55555555,0x55555555
/***************************************************
* Check Memory (used to test MMU consistency)
**************************************************/
check_memory:
bl setup
1: mfctr r2
stwu r2,4(r4)
bdnz 1b
bl setup
2: mfctr r6
lwzu r2,4(r4)
cmpw r6,r2
bne failure
bdnz 2b
b mem_ok
setup:
LOADI r3,0x100000*128 // 128 MB
subi r3,r3,0x1000
srwi r3,r3,2
mtctr r3
li r4,0x1000
subi r4,r4,4
blr
failure:
nop
b failure
addi r31,r31,1
b check_memory
mem_ok:
addi r30,r30,1
b check_memory
/***************************************************
* Various Stuff
**************************************************/
map_ram:
LOADI r3,0x00000006 // 601, 00000 -> 00000
LOADI r4,0x0000005F
mtibatu 1,r3
mtibatl 1,r4
li r5,MSR_DR
mtmsr r5
nop
nop
nop
b map_ram
setregs:
li r0,10
li r1,11
li r2,12
li r3,13
li r4,14
li r5,15
li r6,16
li r7,17
li r8,18
li r9,19
li r10,20
li r11,21
li r12,22
li r13,23
li r14,24
li r15,25
li r16,26
li r17,27
li r18,28
li r19,29
li r20,30
li r21,31
li r22,32
li r23,33
li r24,34
li r25,35
li r26,36
li r27,37
li r28,38
li r29,39
li r30,40
li r31,41
blr
#endif
GLOBL(_macprog_end ):
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