在堆栈中存储浮点

Question

我正在尝试使用堆栈指针将浮点数存储到寄存器$ f1的堆栈中。我总是得到地址超出范围的错误。在我这样做之后，我想从堆栈中弹出单词并将它们打印到屏幕上。我正在使用火星。这是一些示例代码。

示例代码

    li, $t3, 0      # set counter register
l.s $f1, zero       # load floating point 0.00 into $f1
li $sp, 252     # start the stack size
swc1 $f1, ($sp)     # store the floating point as a word in the stack
loop:
addi $sp, $sp, -4   # decrement the stack pointer
swc1 $f1, ($sp)     # store the floating point as a word in the stack   
bgt $sp, $t3, loop  # continue loop until all stack is populated

print to screen after this line

li $t2, 7
li $sp, 252     # start the stack size
lwc1 $f12, ($sp)    # pop from stack
li $v0, 2
syscall
printloop:
addi $sp, $sp, -4   # decrement the stack pointer
lwc1 $f12, ($sp)    # pop from stack
li $v0, 2       
syscall
addi $t2, $t2, -1
bnez $t2, printloop
lw $a0, newline
li $v0, 4
syscall
li $t2, 7
printloop2:
addi $sp, $sp, -4   
lwc1 $f12, ($sp)
li $v0, 2
syscall
addi $t2, $t2, -1
bnez $t2, printloop2
lw $a0, newline
li $v0, 4
syscall
li $t2, 7
printloop3:
addi $sp, $sp, -4   
lwc1 $f12, ($sp)
li $v0, 2
syscall
addi $t2, $t2, -1
bnez $t2, printloop3
lw $a0, newline
li $v0, 4
syscall
li $t2, 7
printloop4:
addi $sp, $sp, -4   
lwc1 $f12, ($sp)
li $v0, 2
syscall
addi $t2, $t2, -1
bnez $t2, printloop4
lw $a0, newline
li $v0, 4
syscall
li $t2, 7
printloop5:
addi $sp, $sp, -4   
lwc1 $f12, ($sp)
li $v0, 2
syscall
addi $t2, $t2, -1
bnez $t2, printloop5
lw $a0, newline
li $v0, 4
syscall
li $t2, 7
printloop6:
addi $sp, $sp, -4   
lwc1 $f12, ($sp)
li $v0, 2
syscall
addi $t2, $t2, -1
bnez $t2, printloop6
lw $a0, newline
li $v0, 4
syscall
li $t2, 7
printloop7:
addi $sp, $sp, -4   
lwc1 $f12, ($sp)
li $v0, 2
syscall
addi $t2, $t2, -1
bnez $t2, printloop7
lw $a0, newline
li $v0, 4
syscall
li $t2, 7   
printloop8:
addi $sp, $sp, -4   
lwc1 $f12, ($sp)
li $v0, 2
syscall
addi $t2, $t2, -1
bnez $t2, printloop8
li $v0, 10
syscall

Answer 1

我认为您的问题是您在text段中设置了堆栈。 我会删除这一行

li $sp, 252     # start the stack size

并更改

li, $t3, 0 

到

subu $t3, $sp, 252

这样你就可以循环直到堆栈中有64个项目