MIPS错误 - 在数组中找到最大值

Question

我想编写一个在数组中找到最大值的程序。 当我尝试启动我的程序时，我收到错误“PC发生异常= 0x0040004c”。我不知道这意味着什么，我不知道我的代码有什么问题。

 .data
 liste: .word 1, 2 ,3 ,41, 5, 6, 7

.text
main:
    la $a0 liste        #adresse des ersten Elements in $a0 gespeichert
    la $a1 28($a0)      #adresse des letzten Elements in $a1 gespeichert
    li $v0 0            #speichere 0 in v0

tester:
    beq $a0 $a1 exit    #test, if we are at the end of the array
    j findmax

findmax:
    la $t0 ($a0)        #copy a0 in t0
speichermax:
    la $v0 ($t0)        #adress of t0 (Maximum) in v0
    lw $v1 ($v0)        #value of the max in v1 

loop:   
    la $t0 4($t0)       #go to the next field content
    beq $v0 $a1 exit    #end of field is reached
    lw $t1 ($t0)

    sub $t1 $t1 $v1         # t1 = t1 - v1
    bgtz $t1 speichermax        
    #bgt $t1 $v1 speichermax    #test if t1>v1 -> yes: save the new max  in v1 (über speichermax)
    j loop

exit:
    lw $a0 ($t0) #print the maximum
    li $v0 1
    syscall

    li $v0 10 #exit
    syscall

Answer 1

Skipping the rest of the program I believe that this: la $a1, 28($a0) is wrong. Try this: addi $s1, $a0, 28.