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strlen.c文件中的内联汇编代码如下：

#include 
   
    size_tstrlen (const char *str){  int cnt;  asm("cld\n"			/* Search forward.  */      /* Some old versions of gas need `repne' instead of `repnz'.  */      "repnz\n"			/* Look for a zero byte.  */      "scasb" /* %0, %1, %3 */ :      "=c" (cnt) : "D" (str), "0" (-1), "a" (0));  return -2 - cnt;}
   

Disassembly of section .text:00000000 
   
    :   0:   57                      push   %edi   1:   b9 ff ff ff ff          mov    $0xffffffff,%ecx   6:   b8 00 00 00 00          mov    $0x0,%eax   b:   8b 7c 24 08             mov    0x8(%esp),%edi   f:   fc                      cld  10:   f2 ae                   repnz scas %es:(%edi),%al  12:   b8 fe ff ff ff          mov    $0xfffffffe,%eax  17:   29 c8                   sub    %ecx,%eax  19:   5f                      pop    %edi  1a:   c3                      ret
   

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