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heap_test.s
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heap_test.s
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#include stdlib.s
.globl main
.data
msg_str: .asciiz "adder entered"
.text
main:
{
@addr = $s0
@end = $t1
@amt = $s1
@mem_id0 = $s2
@mem_id1 = $s3
@mem_id2 = $s4
@loc = $s5
@index = $t2
@val = $s6
@err = $t4
li $v0 9 # system call code for sbrk
addi $a0 $0 0x400 # amount
syscall # make the call
addu @addr $v0 $0
addu $a0 @addr $0
addu $a1 $0 0x100
call initialize_heap
println_hex addr_msg @addr
addu @amt $0 4
# sw @amt 16(@addr) #hack to check last word is moved
print_hcb @addr
addu $a0 @amt $0
addu $a1 @addr $0
call alloc
addu @mem_id0 $v0 $0
addu @addr $v1 $0
print_hcb @addr
addu @amt $0 17
# alloc(amt, addr) --> $v0 = mem_id, $v1 = hcb_addr
addu $a0 @amt $0
addu $a1 @addr $0
call alloc
addu @mem_id1 $v0 $0
addu @addr $v1 $0
print_hcb @addr
addu @amt $0 14
addu $a0 @amt $0
addu $a1 @addr $0
call alloc
addu @mem_id2 $v0 $0
addu @addr $v1 $0
print_hcb @addr
addu @val $0 0x14
addu @loc $0 $0
put @loc @mem_id0 @addr @val @err
get @loc @mem_id0 @addr @val @err
println_hex val_msg $s6
addu @val $0 0x15
addu @loc $0 0x1
put @loc @mem_id0 @addr @val @err
get @loc @mem_id0 @addr @val @err
println_hex val_msg @val
addu @loc $0 $0
get @loc @mem_id0 @addr @val @err
println_hex val_msg @val
addu @val $0 0x17
addu @loc $0 0x3
put @loc @mem_id1 @addr @val @err
get @loc @mem_id1 @addr @val @err
println_hex val_msg @val
{
addu $a0 @mem_id0 $0
addu $a1 @addr $0
call free
addu @addr $v0 $0
print_hcb @addr
}
addu @loc $0 $0
get @loc @mem_id0 @addr @val @err
println_hex val_msg @val
{
addu $a0 @mem_id2 $0
addu $a1 @addr $0
call free
addu @addr $v0 $0
print_hcb @addr
}
#
{
addu $a0 @mem_id1 $0
addu $a1 @addr $0
call free
addu @addr $v0 $0
print_hcb @addr
}
addu @amt $0 7
# sw @amt 16(@addr) #hack to check last word is moved
print_hcb @addr
addu $a0 @amt $0
addu $a1 @addr $0
call alloc
addu @mem_id0 $v0 $0
addu @addr $v1 $0
print_hcb @addr
addu @amt $0 19
# alloc(amt, addr) --> $v0 = mem_id, $v1 = hcb_addr
addu $a0 @amt $0
addu $a1 @addr $0
call alloc
addu @mem_id1 $v0 $0
addu @addr $v1 $0
print_hcb @addr
addu @amt $0 11
addu $a0 @amt $0
addu $a1 @addr $0
call alloc
addu @mem_id2 $v0 $0
addu @addr $v1 $0
print_hcb @addr
addu @val $0 0x14
addu @loc $0 $0
put @loc @mem_id1 @addr @val @err
get @loc @mem_id1 @addr @val @err
println_hex val_msg $s6
addu @val $0 0x1123
addu @loc $0 0x1
put @loc @mem_id2 @addr @val @err
get @loc @mem_id2 @addr @val @err
println_hex val_msg @val
addu @loc $0 $0
get @loc @mem_id1 @addr @val @err
println_hex val_msg @val
addu @val $0 0x17
addu @loc $0 0x3
put @loc @mem_id1 @addr @val @err
get @loc @mem_id1 @addr @val @err
println_hex val_msg @val
{
addu $a0 @mem_id0 $0
addu $a1 @addr $0
call free
addu @addr $v0 $0
print_hcb @addr
}
addu @loc $0 $0
get @loc @mem_id0 @addr @val @err
println_hex val_msg @val
{
addu $a0 @mem_id2 $0
addu $a1 @addr $0
call free
addu @addr $v0 $0
print_hcb @addr
}
addu @amt $0 11
addu $a0 @amt $0
addu $a1 @addr $0
call alloc
addu @mem_id2 $v0 $0
addu @addr $v1 $0
print_hcb @addr
#
{
addu $a0 @mem_id1 $0
addu $a1 @addr $0
call free
addu @addr $v0 $0
print_hcb @addr
}
addu @val $0 0x1123
addu @loc $0 0x1
put @loc @mem_id2 @addr @val @err
get @loc @mem_id2 @addr @val @err
println_hex val_msg @val
{
addu $a0 @mem_id2 $0
addu $a1 @addr $0
call free
addu @addr $v0 $0
print_hcb @addr
}
# print_hcb @addr
#
# addu @index $0 1
# {
# @item_addr = $t3
# @err = $t4
# addu $a0 @index $0
# addu $a1 @addr $0
# call get_hcb_item
# addu @item_addr $v0 $0
# addu @err $v1 $0
#
# bne @err $0 error
# addu $a0 @item_addr $0
# call print_hcb_item
# j endblock
# error:
# println error_msg
# endblock:
# }
#
#
# # del_hcb_item(index, addr) --> $v0 = error
# addu @index $0 2
# {
# @err = $t4
# addu $a0 @index $0
# addu $a1 @addr $0
# call del_hcb_item
# addu @err $v0 $0
# println_hex err_equal_msg @err
# }
#
# print_hcb @addr
exit
.data
addr_msg: .asciiz "addr = "
error_msg: .asciiz "error"
err_equal_msg: .asciiz " error = "
found_msg: .asciiz " found = "
index_msg: .asciiz " index = "
mem_id_msg: .asciiz " mem_id = "
val_msg: .asciiz " val = "
.text
}
# addu $s0 $0 4
# addu $a0 $s0 $0
# call alloc #$s0 $s1
# addu $s1 $v0 $0
# call print_hcb
# exit
# end of add2.asm.