Question
In: Computer Science
Convert C code to MIPS assembly language 1) sum = 0; for(i=0; I < 1000; i++)...
Convert C code to MIPS assembly language
1)
sum = 0;
for(i=0; I < 1000; i++)
sum = sum + I;
printf(“sum=%d”, sum);
2)
int i, v[10];
int min, k;
for(i=0; i < 10; i++)
scanf(“%d”, &v[i]);
min = v[0]
for(i=1; I < 10; i++)
if(min > v[i]){
min = v[i]
k = I;
}
printf(“%d=>%d”, k, min);
Solutions
Expert Solution
1. MIPS assembly language for the first code
.file 1 ""
.section .mdebug.abi32
.previous
.nan legacy
.module fp=32
.module nooddspreg
.abicalls
.rdata
.align 2
$LC0:
.ascii "sum=%d\000"
.text
.align 2
.globl main
.set nomips16
.set nomicromips
.ent main
.type main, @function
main:
.frame $fp,40,$31 # vars= 8, regs= 2/0, args= 16, gp= 8
.mask 0xc0000000,-4
.fmask 0x00000000,0
.set noreorder
.cpload $25
.set nomacro
addiu $sp,$sp,-40
sw $31,36($sp)
sw $fp,32($sp)
move $fp,$sp
.cprestore 16
movz $31,$31,$0
sw $0,24($fp)
sw $0,28($fp)
b $L2
nop
$L3:
lw $3,24($fp)
lw $2,28($fp)
nop
addu $2,$3,$2
sw $2,24($fp)
lw $2,28($fp)
nop
addiu $2,$2,1
sw $2,28($fp)
$L2:
lw $2,28($fp)
nop
slt $2,$2,1000
bne $2,$0,$L3
nop
lw $5,24($fp)
lw $2,%got($LC0)($28)
nop
addiu $4,$2,%lo($LC0)
lw $2,%call16(printf)($28)
nop
move $25,$2
.reloc 1f,R_MIPS_JALR,printf
1: jalr $25
nop
lw $28,16($fp)
move $2,$0
move $sp,$fp
lw $31,36($sp)
lw $fp,32($sp)
addiu $sp,$sp,40
j $31
nop
.set macro
.set reorder
.end main
.size main, .-main
.ident "GCC: (Ubuntu 5.4.0-6ubuntu1~16.04.9) 5.4.0 20160609"
2. MIPS assembly language for the second code
.file 1 ""
.section .mdebug.abi32
.previous
.nan legacy
.module fp=32
.module nooddspreg
.abicalls
.rdata
.align 2
$LC0:
.ascii "%d\000"
.align 2
$LC1:
.ascii "%d=>%d\000"
.text
.align 2
.globl main
.set nomips16
.set nomicromips
.ent main
.type main, @function
main:
.frame $fp,88,$31 # vars= 56, regs= 2/0, args= 16, gp= 8
.mask 0xc0000000,-4
.fmask 0x00000000,0
.set noreorder
.cpload $25
.set nomacro
addiu $sp,$sp,-88
sw $31,84($sp)
sw $fp,80($sp)
move $fp,$sp
.cprestore 16
movz $31,$31,$0
sw $0,24($fp)
b $L2
nop
$L3:
addiu $3,$fp,36
lw $2,24($fp)
nop
sll $2,$2,2
addu $2,$3,$2
move $5,$2
lw $2,%got($LC0)($28)
nop
addiu $4,$2,%lo($LC0)
lw $2,%call16(__isoc99_scanf)($28)
nop
move $25,$2
.reloc 1f,R_MIPS_JALR,__isoc99_scanf
1: jalr $25
nop
lw $28,16($fp)
lw $2,24($fp)
nop
addiu $2,$2,1
sw $2,24($fp)
$L2:
lw $2,24($fp)
nop
slt $2,$2,10
bne $2,$0,$L3
nop
lw $2,36($fp)
nop
sw $2,28($fp)
li $2,1 # 0x1
sw $2,24($fp)
b $L4
nop
$L6:
lw $2,24($fp)
nop
sll $2,$2,2
addiu $3,$fp,24
addu $2,$3,$2
lw $3,12($2)
lw $2,28($fp)
nop
slt $2,$3,$2
beq $2,$0,$L5
nop
lw $2,24($fp)
nop
sll $2,$2,2
addiu $3,$fp,24
addu $2,$3,$2
lw $2,12($2)
nop
sw $2,28($fp)
lw $2,24($fp)
nop
sw $2,32($fp)
$L5:
lw $2,24($fp)
nop
addiu $2,$2,1
sw $2,24($fp)
$L4:
lw $2,24($fp)
nop
slt $2,$2,10
bne $2,$0,$L6
nop
lw $6,28($fp)
lw $5,32($fp)
lw $2,%got($LC1)($28)
nop
addiu $4,$2,%lo($LC1)
lw $2,%call16(printf)($28)
nop
move $25,$2
.reloc 1f,R_MIPS_JALR,printf
1: jalr $25
nop
lw $28,16($fp)
move $2,$0
move $sp,$fp
lw $31,84($sp)
lw $fp,80($sp)
addiu $sp,$sp,88
j $31
nop
.set macro
.set reorder
.end main
.size main, .-main
.ident "GCC: (Ubuntu 5.4.0-6ubuntu1~16.04.9) 5.4.0 20160609"
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