一：c语言编写简单函数(function_example.c)

#include 
    
     int static add(int a, int b){    return a+b;}int main(){    int x = 5;    int y = 10;    int u = add(x, y);}
    

二：gcc编译

$ gcc -g -c function_example.c

三：objdump查看C语言和对应汇编

$ objdump -d -M intel -S function_example.ofunction_example.o:     file format elf64-x86-64Disassembly of section .text:0000000000000000 
    
     :#include 
     
      int static add(int a, int b){   0:   55                      push   rbp   1:   48 89 e5                mov    rbp,rsp   4:   89 7d fc                mov    DWORD PTR [rbp-0x4],edi   7:   89 75 f8                mov    DWORD PTR [rbp-0x8],esi    return a+b;   a:   8b 55 fc                mov    edx,DWORD PTR [rbp-0x4]   d:   8b 45 f8                mov    eax,DWORD PTR [rbp-0x8]  10:   01 d0                   add    eax,edx}  12:   5d                      pop    rbp  13:   c3                      ret    0000000000000014 
      
       :int main(){  14:   55                      push   rbp  15:   48 89 e5                mov    rbp,rsp  18:   48 83 ec 10             sub    rsp,0x10    int x = 5;  1c:   c7 45 fc 05 00 00 00    mov    DWORD PTR [rbp-0x4],0x5    int y = 10;  23:   c7 45 f8 0a 00 00 00    mov    DWORD PTR [rbp-0x8],0xa    int u = add(x, y);  2a:   8b 55 f8                mov    edx,DWORD PTR [rbp-0x8]  2d:   8b 45 fc                mov    eax,DWORD PTR [rbp-0x4]  30:   89 d6                   mov    esi,edx  32:   89 c7                   mov    edi,eax  34:   e8 c7 ff ff ff          call   0 
       
          39:   89 45 f4                mov    DWORD PTR [rbp-0xc],eax  3c:   b8 00 00 00 00          mov    eax,0x0}  41:   c9                      leave    42:   c3                      ret