MIPS装配中的矩阵乘法错误
我一直在盯着这一段时间，虽然从我得到的错误（无效结果，内存地址不在边界）中可以清楚地看到，我的算法出现了问题，但并不明显。 任何援助将不胜感激。
矩阵元素在数组中以半个字存储。 请原谅凹痕和任何其他样式错误。 我只是想让它现在正确地工作。
# matrixMult
#
# Description: This function multiplies
# the two input matrices and places the
# result in matrixC.
#
# register use:
# a0: address of matrixA
# a1: address of matrixB
# a2: address of matrixC
# t0: counter for row number of matrix C
# t1: counter for column number of matrix C
# t2: counter for addend number
# t3: running total for each element of matrix C
# t4: number of rows of matrixC
# t5: number of columns of matrixC
# t6: number of columns of matrixA/rows of matrixB
# t7: incrementer for matrix addresses
# t8: temporary storage
#########################################
matrixMult:
lw $t4, 0($s1) #rows of C
lw $t5, 4($s2) #columns of C
lw $t6, 4($s1) #columns of A/rows of B
move $s4, $ra
la $a0, matrixA #loads address of matrixA into a0
la $a1, matrixB #loads address of matrixB into a1
la $a2, matrixC #loads address of matrixC into a2
addi $t0, $zero, 0 #initializes t0 to be 0
forrowsA:
addi $t1, $zero, 0 #initializes t1 to be 0
forcolsB:
addi $t2, $zero, 0 #initializes t2 to be 0
addi $t3, $zero, 0 #sets the total for this element to 0
forcolsA:
#for matrix A pointer
mul $t7, $t5, $t0 # t7 = number of columns * row number
add $t7, $t7, $t1 # t7 += column number
add $t7, $t7, $t2 # t7 += addend number
sll $t7, $t7, 1 # t7 *= 2
add $a0, $a0, $t7 # a0 += 2(number of columns * row number + column number)
lh $a3, 0($a0) # integer at memory address a0 saved as a3
sub $a0, $a0, $t7 # returns pointer address to the base address
#for matrix B pointer
add $t7, $t2, $t0 # t7 = addend number + row number
mul $t7, $t7, $t5 # t7 *= number of columns
add $t7, $t7, $t0 # t7 += column number
sll $t7, $t7, 1 # t7 *= 2
add $a1, $a1, $t7 # a0 += 2(number of columns * row number + column number)
lh $t8, 0($a1) # integer at memory address a0 saved as a3
sub $a1, $a1, $t7 # returns pointer address to the base address
add $t3, $a3, $t8 #adds A(m,n+x) * B(n+x,m) to the total for C(m,n)
addi $t2, $t2, 1 #increments t2
beq $t2, $t6, nextel #moves on to next element once one is finished
jal forcolsA #repeats totaling loop for an individual element
nextel:
sh $t3, 0($a2) #saves the matrix element at the pointer's address
addi $a2, $a2, 2 #moves pointer to next element address in matrixC
addi $t1, $t1, 1 #increments t1
beq $t1, $t5, finrow #moves on to next row once one is finished
jal forcolsB #repeats loop for new element
finrow:
addi $t0, $t0, 1 #increments t0
beq $t0, $t4, finmult #ends loop if finished multiplying all elements
jal forrowsA
finmult:
jr $s4 # return to the caller