这是我必须描述子程序的代码块。打开文件时QtSpim崩溃了。我没有机会去运行它。
###########################################################
# Read Structure
# # #
# 1. Iterate through the array and read each element from user input
# 2. Each element should be a [double, integer] pair
# - Double: “price”
# - Integer: “count”
###########################################################
如果它有帮助，这是我未完成的程序的其余部分。在使用print语句隔离部分并删除块然后重新运行/崩溃QtSpim后，我才发现出了什么问题。
###########################################################
# Program 5 - Data Structure
# # #
# 1. Dynamically Allocate and fill Array of Data Structures
# 2. Print Out Array
# 4. Iterate Array and calculate sum and average
# - Value of each element = (price x count)
# - Array Average = (total value / total count)
# 6. Iterate again to find the min and max values
# 7. Print sum, average, min and max value.
# # Main's Order # #
# Allocate Structure #
# Read Structure #
# Print Structure #
# Sum Average #
# Get Min/Max #
# # # # # # # # # # #
###########################################################
# Register Usage
# $t0
# $t1
# $t2
# $t3
# $t4
# $t5
# $t6
# $t7
# $t8
# $t9 Temp
###########################################################
.data
# "sv" - Static Variable
ArrayAddress_sv: .word 0
ArraySize_sv: .word 0
###########################################################
.text
main:
addi $sp, $sp, -4 # Allocate space for $ra
sw $ra, 0($sp) # Store $ra onto stack
addi $sp, $sp, -8 # Allocate space for |2-Arg's OUT(Array Base Address/Array Length)|
jal allocate_structure
lw $t0, 0($sp) # Loading Array Address($sp+0) to $t0
lw $t1, 4($sp) # Loading Array Size($sp+4) to $t1
addi $sp, $sp, 8 # De-Allocating 2 Arguments
lw $ra, 0($sp) # load $ra from stack
addi $sp, $sp, 4 # deallocate word for $ra
la $t9, ArrayAddress_sv # Loading Address of Static Variable
sw $t0, 0($t9) # Storing Array Address($t0) into Static Variable(ArrayAddress_sv)
la $t9, ArraySize_sv # Loading Address of Static Variable
sw $t1, 0($t9) # Storing Array Size($t1) into Static Variable(ArraySize_sv)
# # # # # # # # # # # # # #
# Allocate Structure Done #
# # # # # # # # # # # # # #
la $t9, ArrayAddress_sv # Loading Address of Static Variable
lw $t0, 0($t9) # Storing Variable(Array Address) into $t0
# # # RESTORING VARIABLES # # #
la $t9, ArraySize_sv # Loading Address of Static Variable
lw $t1, 0($t9) # Storing Variable(Array Length) into $t1
addi $sp, $sp, -4 # Allocate space for $ra
sw $ra, 0($sp) # Store $ra onto stack
addi $sp, $sp, -8 # Allocate space for |2-Arg's IN(Array Base Address/Array Length)|
sw $t0, 0($sp) # Storing Array Address into $sp+0
sw $t1, 4($sp) # Storing Array Length into $sp+4
jal read_structure
addi $sp, $sp, 8 # De-Allocate space for |2-Arg's IN(Array Base Address/Array Length)|
lw $ra, 0($sp) # load $ra from stack
addi $sp, $sp, 4 # deallocate word for $ra
# # # # # # # # # # # #
# Read Structure Done #
# # # # # # # # # # # #
la $t9, ArrayAddress_sv # Loading Address of Static Variable
lw $t0, 0($t9) # Storing Variable(Array Address) into $t0
# # # RESTORING VARIABLES # # #
la $t9, ArraySize_sv # Loading Address of Static Variable
lw $t1, 0($t9) # Storing Variable(Array Length) into $t1
addi $sp, $sp, -4 # allocate one word for $ra
sw $ra, 0($sp) # store $ra on stack
addi $sp, $sp, -8 # Allocate space for |2-Arg's IN(Array Base Address/Array Length)|
sw $t0, 0($sp) # Storing Array Address into $sp+0
sw $t1, 4($sp) # Storing Array Length into $sp+4
jal print_structure
addi $sp, $sp, 8 # De-Allocate space for |2-Arg's IN(Array Base Address/Array Length)|
lw $ra, 0($sp) # load $ra from stack
addi $sp, $sp, 4 # deallocate word for $ra
# # # # # # # # # # # #
# Print Structure Done #
# # # # # # # # # # # #
addi $sp, $sp, 4 # De-Allocating $ra
li $v0, 10 #End Program
syscall
###########################################################
# # # # # # # # # # # # # # # # # # # # # # # # # # # # # #
###########################################################
# Allocate Structure
# # #
# 1. Prompt user for an array size
# 2. Dynamically allocate an array of data structures
# 3. Return array base address and array size to main
###########################################################
# Arguments In and Out of subprogram
# $sp+0 Array Base Address(OUT)
# $sp+4 Array Size(OUT)
###########################################################
# Register Usage
# $t0 Array Size
# $t1 12
###########################################################
.data
InvalidSize_p: .asciiz "\nThe size you entered was invalid."
ArraySize_p: .asciiz "\nEnter size of the array: "
###########################################################
.text
allocate_structure:
li $v0, 4 # # #
la $a0, ArraySize_p # Print "Enter an array length: "
syscall # # #
li $v0, 5
syscall
blez $v0, invalid_size # If entered length <= 0 display error
move $t0, $v0
li $t1, 12
li $v0, 9
mul $a0, $t0, $t1
syscall
sw $v0, 0($sp) # Saving $v0(Array Address) on stack
sw $t0, 4($sp) # Saving $t0(Array Size) on stack
jr $ra #return to main
invalid_size:
li $v0, 4 # # #
la $a0, InvalidSize_p # Print "\nThe size you entered was invalid."
syscall # # #
b allocate_structure
###########################################################
# # # # # # # # # # # # # # # # # # # # # # # # # # # # # #
###########################################################
# Read Structure
# # #
# 1. Iterate through the array and read each element from user input
# 2. Each element should be a [double, integer] pair
# - Double: “price”
# - Integer: “count”
###########################################################
# Arguments In and Out of subprogram
# $sp+0 Array Base Address(IN)
# $sp+4 Array Size(IN)
###########################################################
# Register Usage
# $t0 Array Address
# $t1 Array Size
# $t2 Counter
###########################################################
.data
Price_p: .asciiz "\n Enter Price(Double) for Item "
Count_p: .asciiz "\n Enter Count(Integer) for Item "
Input_p: .asciiz " : "
InvalidRead_p: .asciiz "\n The number you entered is invalid"
###########################################################
.text
read_structure:
lw $t0, 0($sp) # Loading Array Address($sp+0) to $t0
lw $t1, 4($sp) # Loading Array Size($sp+4) to $t1
li $t2, 1
read_structure_loop:
li $v0, 4 # # #
la $a0, Price_p # Print "\n Enter Price(Double) for Item "
syscall # # #
li $v0, 1 # # #
move $a0, $t2 # Print Counter Integer
syscall # # #
li $v0, 4 # # #
la $a0, Input_p # Print " : "
syscall # # #
li $v0, 7 # Read Double
syscall
#c.le.d $f0, $zero # Double is <= Zero
#bc1t invalid_read # # #
li $v0, 4 # # #
la $a0, Price_p # Print "\n Enter Count(Integer) for Item "
syscall # # #
li $v0, 1 # # #
move $a0, $t2 # Print Counter Integer
syscall # # #
li $v0, 4 # # #
la $a0, Input_p # Print " : "
syscall # # #
li $v0, 5 # Read Int
syscall
blez $v0, invalid_read # Int is <= zero
s.d $f0, 0($t0) # Store Double into array
sw $v0, 8($t0) # Store Int into Array
addi $t0, $t0, 12 # Move Pointer
addi $t2, $t2, 1 # Increment Counter
blt $t2, $t1, read_structure_loop # If counter < array size, then loop again
jr $ra # Return to main
invalid_read:
li $v0, 4 # # #
la $a0, InvalidRead_p # Print "\n The number you entered is invalid"
syscall # # #
b read_structure_loop
###########################################################
# # # # # # # # # # # # # # # # # # # # # # # # # # # # # #
###########################################################
# Print Structure
# # #
# 1. Iterate the array and print the content of each element "[double, integer]
###########################################################
# Arguments In and Out of subprogram
# $sp+0 Array Base Address(IN)
# $sp+4 Array Size(IN)
###########################################################
# Register Usage
###########################################################
.data
###########################################################
.text
print_structure:
jr $ra #return to
###########################################################
# # # # # # # # # # # # # # # # # # # # # # # # # # # # # #
###########################################################
# Sum Average
# # #
# 1. Iterate the array and calculate the sum and average
# 2. Value is (price x count)
# 3. Average is (total value / total count)
###########################################################
# Arguments In and Out of subprogram
# $sp+0 Array Base Address(IN)
# $sp+4 Array Size(IN)
# $sp+8 Sum Calculated Sums in data structure array(OUT)
# $sp+16 Average of calculated sums in data structure array(OUT)
###########################################################
# Register Usage
###########################################################
.data
###########################################################
.text
sum_average:
jr $ra #return to main
###########################################################
# # # # # # # # # # # # # # # # # # # # # # # # # # # # # #
###########################################################
# Get Min/Max
# # #
# 1. Iterate the array and find minimum value and maximum value
# - Total Value = (price x count)
###########################################################
# Arguments In and Out of subprogram
# $sp+0 Array Base Address(IN)
# $sp+4 Array Size(IN)
# $sp+8 Min Value(OUT)
# $sp+16 Max Value(OUT)
###########################################################
# Register Usage
###########################################################
.data
###########################################################
.text
get_min_max:
jr $ra #return to main
###########################################################
# # # # # # # # # # # # # # # # # # # # # # # # # # # # # #
###########################################################