user: Demonstrate the C code that generates the assembly output below:

```asm
<eeprom_send_start>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  sub    $0x20,%rsp
  mov    %rdi,-0x18(%rbp)
  mov    %esi,-0x1c(%rbp)
  mov    %fs:0x28,%rax
  mov    %rax,-0x8(%rbp)
  xor    %eax,%eax
  cmpl   $0x5,-0x1c(%rbp)
  jg     L116
  cmpl   $0x4,-0x1c(%rbp)
  jge    L98
  cmpl   $0x3,-0x1c(%rbp)
  je     L66
  cmpl   $0x3,-0x1c(%rbp)
  jg     L116
  cmpl   $0x1,-0x1c(%rbp)
  je     L86
  cmpl   $0x2,-0x1c(%rbp)
  je     L51
  jmp    L116
L86:
  movl   $0x0,-0x10(%rbp)
  movl   $0x1,-0xc(%rbp)
  jmp    L30
L51:
  movl   $0x1,-0x10(%rbp)
  movl   $0x0,-0xc(%rbp)
  jmp    L30
L66:
  movl   $0x1,-0x10(%rbp)
  movl   $0x1,-0xc(%rbp)
  jmp    L30
L98:
  movl   $0x0,-0x10(%rbp)
  movl   $0x0,-0xc(%rbp)
  jmp    L30
L116:
  mov    $0x4,%eax
  jmp    L90
L30:
  mov    -0x18(%rbp),%rax
  mov    $0x0,%esi
  mov    %rax,%rdi
  call   <set_scl_line@plt>
  mov    -0x18(%rbp),%rax
  mov    $0x1,%esi
  mov    %rax,%rdi
  call   <set_sda_line@plt>
  mov    $0x64,%edi
  call   <eeprom_delay@plt>
  mov    -0x18(%rbp),%rax
  mov    $0x1,%esi
  mov    %rax,%rdi
  call   <set_scl_line@plt>
  mov    $0x1f4,%edi
  call   <eeprom_delay@plt>
  mov    -0x18(%rbp),%rax
  mov    $0x0,%esi
  mov    %rax,%rdi
  call   <set_scl_line@plt>
  mov    $0x1f4,%edi
  call   <eeprom_delay@plt>
  mov    -0x10(%rbp),%edx
  mov    -0x18(%rbp),%rax
  mov    %edx,%esi
  mov    %rax,%rdi
  call   <set_sda_line@plt>
  mov    $0x64,%edi
  call   <eeprom_delay@plt>
  mov    -0x18(%rbp),%rax
  mov    $0x1,%esi
  mov    %rax,%rdi
  call   <set_scl_line@plt>
  mov    $0x1f4,%edi
  call   <eeprom_delay@plt>
  mov    -0x18(%rbp),%rax
  mov    $0x0,%esi
  mov    %rax,%rdi
  call   <set_scl_line@plt>
  mov    $0x1f4,%edi
  call   <eeprom_delay@plt>
  mov    -0xc(%rbp),%edx
  mov    -0x18(%rbp),%rax
  mov    %edx,%esi
  mov    %rax,%rdi
  call   <set_sda_line@plt>
  mov    $0x64,%edi
  call   <eeprom_delay@plt>
  mov    -0x18(%rbp),%rax
  mov    $0x1,%esi
  mov    %rax,%rdi
  call   <set_scl_line@plt>
  mov    $0x1f4,%edi
  call   <eeprom_delay@plt>
  mov    -0x18(%rbp),%rax
  mov    $0x0,%esi
  mov    %rax,%rdi
  call   <set_scl_line@plt>
  mov    $0x1f4,%edi
  call   <eeprom_delay@plt>
  mov    $0x0,%eax
L90:
  mov    -0x8(%rbp),%rdx
  sub    %fs:0x28,%rdx
  je     L62
  call   <__stack_chk_fail@plt>
L62:
  leave
  ret
```

assistant: ```c
int eeprom_send_start(unsigned long pci_base, int command) {
  int op_code[2];
  switch (command) {
  case 1:
    op_code[0] = 0;
    op_code[1] = 1;
    break;
  case 2:
    op_code[0] = 1;
    op_code[1] = 0;
    break;
  case 3:
    op_code[0] = 1;
    op_code[1] = 1;
    break;
  case 4:
  case 5:
    op_code[0] = 0;
    op_code[1] = 0;
    break;
  default:
    return (4);
  }
  set_scl_line(pci_base, 0);
  set_sda_line(pci_base, 1);
  eeprom_delay(100);
  set_scl_line(pci_base, 1);
  eeprom_delay(500);
  set_scl_line(pci_base, 0);
  eeprom_delay(500);
  set_sda_line(pci_base, op_code[0]);
  eeprom_delay(100);
  set_scl_line(pci_base, 1);
  eeprom_delay(500);
  set_scl_line(pci_base, 0);
  eeprom_delay(500);
  set_sda_line(pci_base, op_code[1]);
  eeprom_delay(100);
  set_scl_line(pci_base, 1);
  eeprom_delay(500);
  set_scl_line(pci_base, 0);
  eeprom_delay(500);
  return (0);
}
```