movl编写linux汇编程序实现公式w=(x + y)²- z并输出w的值

.section .data

x:
.long 2

y:
.long 3

z:
.long 4

w:
.long 0

.section .text

.globl _start

_start:
movl x, %eax
movl y, %ebx
imull %eax, %eax
addl %eax, %ebx
movl z, %ecx
subl %ecx, %ebx
imull %ebx, %ebx
movl %ebx, w
movl $1, %eax
movl $0, %ebx
int $0x80

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movl编写linux汇编程序实现公式w=(x + y)²- z并输出w

.data
x: .long 2
y: .long 3
z: .long 4
w: .long 0

.text
.global main
main:
movl x, %eax #将x存储到eax中
movl y, %ebx #将y存储到ebx中
imull %eax, %eax #eax = x * x
imull %ebx, %ebx #ebx = y * y
addl %eax, %ebx #ebx = x * x + y * y
movl z, %eax #将z存储到eax中
subl %eax, %ebx #ebx = x * x + y * y - z
imull %ebx, %ebx #ebx = (x * x + y * y - z) ^ 2
movl %ebx, w #将结果存储到w中

#输出w的值
movl $1, %eax #1表示stdout
movl $w, %ebx #w的地址
movl $4, %ecx #4表示输出字符串
movl $w_len, %edx #w_len表示输出长度
int $0x80 #系统调用

movl $1, %eax #1表示退出程序
xorl %ebx, %ebx #返回值为0
int $0x80 #系统调用

.section .rodata
w_msg: .ascii "w = %d\n"
w_len: .long . - w_msg

movl编写linux汇编程序实现公式(x + y)²- z并输出结果

.data
x: .long 5
y: .long 3
z: .long 2
result: .long 0

.text
.globl _start
_start:
movl x, %eax # 将x存储到eax中
imull x, %eax # eax = x*x
addl y, %eax # eax = x*x + y
imull y, %eax # eax = (x*y + y)*y
subl z, %eax # eax = (x*y + y)*y - z
movl %eax, result # 存储结果到result中

# 输出结果
movl $1, %eax # sys_write
movl $1, %ebx # stdout
movl result, %ecx # 输出的内容
movl $4, %edx # 输出的长度
int $0x80 # 调用系统调用

# 退出程序
movl $1, %eax # sys_exit
xorl %ebx, %ebx # 返回值为0
int $0x80