(gdb) disassemble main
Dump of assembler code for function main:
   0x0000000000000682 <+0>:     push   %rbp //Push rbp onto the stack
   0x0000000000000683 <+1>:     mov    %rsp,%rbp //Move the value of rsp to the address of rbp
   0x0000000000000686 <+4>:     sub    $0x10,%rsp //Subtract rsp value from 16
   0x000000000000068a <+8>:     mov    %edi,-0x4(%rbp) //Move the value in the address of rbp minus 4 to edi
   0x000000000000068d <+11>:    mov    %rsi,-0x10(%rbp) //Move the value in the address of rbp minus 10 to rsi
   0x0000000000000691 <+15>:    lea    0xae(%rip),%rdi //Load effective address of rdi to 0xae(rip)
   0x0000000000000698 <+22>:    callq  0x64a <foo> //Store the 0x64a location on the stack and then jump to foo and return back to location
   0x000000000000069d <+27>:    mov    $0x0,%eax //Move value of eax to 0x0
   0x00000000000006a2 <+32>:    leaveq	//Set %rsp to %rbp and pop top of the stack into %rbp
   0x00000000000006a3 <+33>:    retq //Pop return address from stack and jump to it
End of assembler dump.


Dump of assembler code for function foo:
   0x000000000000064a <+0>:     push   %rbp // push rbp onto the stack
   0x000000000000064b <+1>:     mov    %rsp,%rbp //Move the value of rbp to thea ddress of rsp
   0x000000000000064e <+4>:     sub    $0x10,%rsp //Subtract the value of rsp from the value of 16
   0x0000000000000652 <+8>:     mov    %rdi,-0x8(%rbp) //Move the value in address of rbp minus 8 to rdi
   0x0000000000000656 <+12>:    lea    0xd7(%rip),%rdi //Load effective address of rdi to 0xd7
   0x000000000000065d <+19>:    mov    $0x0,%eax //Move the value of eax to 0x0
   0x0000000000000662 <+24>:    callq  0x520 <printf@plt> //Store the location on the stack and then jump to printf and return back to location
   0x0000000000000667 <+29>:    nop
   0x0000000000000668 <+30>:    leaveq //Set %rsp to %rbp and pop top of the stack into %rbp
   0x0000000000000669 <+31>:    retq //Pop return address from stack and jump to it
End of assembler dump.

#include <stdio.h>
#include <string.h>

void foo(const char* input)
{
  char buf[8] = "hello123";
  strcpy(buf, input);
}


void bar(void)
{
  printf("In bar()");
}


int main(int argc, char* argv[])
{
  foo("12345678901234567890");

  return 0;
}