scastest2.s

来自「汇编代码示例」· S 代码 · 共 29 行

# scastest2.s - An example of incorrectly using the SCAS instruction
.section .data
string1:
   .ascii "This is a test - a long text string to scan."
length:
   .int 11
string2:
   .ascii "test"
.section .text
.globl _start
_start:
   nop
   leal string1, %edi
   leal string2, %esi
   movl length, %ecx
   lodsl
   cld
   repne scasl
   jne notfound
   subw length, %cx
   neg %cx
   movl $1, %eax
   movl %ecx, %ebx
   int $0x80
notfound:
   movl $1, %eax
   movl $0, %ebx
   int $0x80