《coredump问题原理探究》Linux x86版3.7节栈布局之返回值

int funcA()
{   
     return 1;
}   
 
int funcB()
{   
     return 2;
}   
 
int main()
{   
     return funcA() + funcB();
}   

(gdb) disassemble funcA
Dump of assembler code for function _Z5funcAv:
   0x08048470 <+0>:     push   %ebp
   0x08048471 <+1>:     mov    %esp,%ebp
   0x08048473 <+3>:     mov    $0x1,%eax
   0x08048478 <+8>:     pop    %ebp
   0x08048479 <+9>:     ret    
End of assembler dump.

(gdb) disassemble funcB
Dump of assembler code for function _Z5funcBv:
   0x0804847a <+0>:     push   %ebp
   0x0804847b <+1>:     mov    %esp,%ebp
   0x0804847d <+3>:     mov    $0x2,%eax
   0x08048482 <+8>:     pop    %ebp
   0x08048483 <+9>:     ret    
End of assembler dump.

   0x08048473 <+3>:     mov    $0x1,%eax

   0x0804847d <+3>:     mov    $0x2,%eax