# SPIM S20 MIPS simulator.# A simple torture test for the bare SPIM simulator.# Copyright (C) 1990-2000 James Larus, larus@cs.wisc.edu.# ALL RIGHTS RESERVED.## SPIM is distributed under the following conditions:## You may make copies of SPIM for your own use and modify those copies.## All copies of SPIM must retain my name and copyright notice.## You may not sell SPIM or distributed SPIM in conjunction with a commerical# product or service without the expressed written consent of James Larus.## THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR# IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED# WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR# PURPOSE.## $Header: /u/faculty/larus/Software/larus/SPIM/Tests/RCS/tt.bare.s,v 1.12 1994/01/18 03:23:44 larus Exp $# Define the exception handling code.  This must go first!# Duplicate of standard trap handler.	.data	.globl __m1___m1_:	.asciiz "  Exception "	.globl __m2___m2_:	.asciiz " occurred\n"	.ktext 0x80000080	mfc0 $26 $13	# Cause	mfc0 $27 $14	# EPC	addiu $v0, $0, 4	# syscall 4 (print_str)#	la $a0 __m1_	lui $a0, 0x1000	syscall	addiu $v0, $0, 1	# syscall 1 (print_int)	addu $a0 $0 $26	syscall	addiu $v0, $0, 4	# syscall 4 (print_str)#	la $a0 __m2_	lui $a0, 0x1000	ori $a0, $a0, 0xd	syscall	mtc0 $0, $13		# Clear Cause register	rfe			# Return from exception handler	addiu $27 $27 4		# Return to next instruction	jr $27	add $0, $0, $0		# Nop# Standard startup code.  Invoke the routine main with no arguments.	.text	.globl __start__start: jal main	addu $0, $0, $0		# Nop	addiu $v0, $0, 10	syscall			# syscall 10 (exit)	.globl mainmain:	addu $20, $0, $31	# Save return PC# Test delayed branches:	addiu $2, $0, 0	beq $0 $0 l1	addiu $2, $0, 1		# Delayed instructionl1:	addiu $3, $0, 1	bne $2 $3 fail	addu $0, $0, $0		# Nop# Test delayed loads:	.data	.globl dd:	.word 101	.text	addiu $3, $0, 0	lui $4 0x1000	lw $3 0x18($4)		# address of d	addu $0, $0, $0		# Nop	addiu $2, $3, 0		# Delayed instruction	addiu $2, $0, 101	bne $2 $3 fail	addu $0, $0, $0		# Nop# Done !!!	.data	.globl smsm:	.asciiz "\nPassed all tests\n"	.text	addiu $v0, $0, 4	# syscall 4 (print_str)#	la $a0 sm	lui $a0, 0x1000	ori $a0, $a0, 0x01c	syscall	addu $31, $0 $20	# Return PC	jr $31			# Return from main	add $0, $0, $0		# Nop	.data	.globl fmfm:	.asciiz "Failed test\n"	.textfail:	addiu $v0, $0, 4	# syscall 4 (print_str)#	la $a0 fm	lui $a0, 0x1000	ori $a0, $a0, 0x2f	syscall	addiu $v0, $0, 10	# syscall 10 (exit)	syscall