尝试将此c代码转换为MIPS并在SPIM中运行它。C到MIPS翻译
int A[100], B[100];
for(i=1; i<100; 1++){
A[i] = A[i-1] + B[i];
}
到目前为止,这是我的。
# comments are delimted by has marks
.data
A: .word 0:100 # array of 12 integers
B: .word 0:100 # array of 12 integers
.text
main:
li $v0, 1 # load the value "1" into register $v0
li $t0, 1 # load the value "1" into register $t0
li $t1, 100 # load the value "100" into register $t1
blt $t0, $t1, loop # branches to Loop if $t0 < 100
la $t9, B
la $t8, A
loop:
sll $t0, $t0, 2
add $t2, $t9, $t0
lw $s4, 0($t9)
add $t3, $t0, -1
add $t4, $t8, $t3
lw $s5, 0($t4)
add $t5, $t2, $s5
add $t6, $s0, $t0
sw $t7, 0($t5)
addi $t0, $t0, 1
li $v0, 1 # system call for print_int
move $a0, $t0 # the sum to print
syscall # print the sum
当SPIM运行出现以下错误:
Exception occurred at PC=0x00400040 Bad address in data/stack read: 0x00000004 Exception occurred at PC=0x0040004c Unaligned address in inst/data fetch: 0x00000003 Exception occurred at PC=0x00400058 Bad address in data/stack read: 0x00000000 Attempt to execute non-instruction at 0x0040006c
一些方向将是很好。谢谢
为什么不先编译并优化结果? – Potatoswatter 2010-02-28 05:31:43
什么是MIPS?在wikipdia找不到 – 2010-02-28 08:37:54
Alon:http://en.wikipedia.org/wiki/MIPS_architecture – Gabe 2010-02-28 11:11:31