user: Converte this assembly snippet into its equivalent C code:

```asm
<usage>:
  endbr64
  push   %rbx
  lea    D56(%rip),%rdx
  lea    D81(%rip),%rbx
  mov    %rbx,%rsi
  lea    D32(%rip),%rdi
  mov    $0x0,%eax
  call   <printf@plt>
  mov    %rbx,%rsi
  lea    D117(%rip),%rdi
  mov    $0x0,%eax
  call   <printf@plt>
  lea    D126(%rip),%rdi
  call   <puts@plt>
  lea    D75(%rip),%rdi
  call   <puts@plt>
  lea    D130(%rip),%rdi
  call   <puts@plt>
  lea    D80(%rip),%rdi
  call   <puts@plt>
  lea    D59(%rip),%rdi
  call   <puts@plt>
  lea    D148(%rip),%rdi
  call   <puts@plt>
  lea    D128(%rip),%rdi
  call   <puts@plt>
  mov    $0xa,%edi
  call   <putchar@plt>
  lea    D28(%rip),%rdi
  call   <puts@plt>
  lea    D151(%rip),%rdi
  call   <puts@plt>
  lea    D120(%rip),%rdi
  call   <puts@plt>
  lea    D70(%rip),%rdi
  call   <puts@plt>
  lea    D0(%rip),%rdi
  call   <puts@plt>
  mov    $0x0,%eax
  call   <die@plt>
  pop    %rbx
  ret
```

tool_calls: name: disassemble_data
arguments: data_label: D56
data_type: string
name: disassemble_data
arguments: data_label: D81
data_type: string
name: disassemble_data
arguments: data_label: D32
data_type: string
name: disassemble_data
arguments: data_label: D117
data_type: string
name: disassemble_data
arguments: data_label: D126
data_type: string
name: disassemble_data
arguments: data_label: D75
data_type: string
name: disassemble_data
arguments: data_label: D130
data_type: string
name: disassemble_data
arguments: data_label: D80
data_type: string
name: disassemble_data
arguments: data_label: D59
data_type: string
name: disassemble_data
arguments: data_label: D148
data_type: string
name: disassemble_data
arguments: data_label: D128
data_type: string
name: disassemble_data
arguments: data_label: D28
data_type: string
name: disassemble_data
arguments: data_label: D151
data_type: string
name: disassemble_data
arguments: data_label: D120
data_type: string
name: disassemble_data
arguments: data_label: D70
data_type: string
name: disassemble_data
arguments: data_label: D0
data_type: string

tool: D56: 0.9

tool: D81: vlink

tool: D32: 
%s %s


tool: D117: Usage: %s <linktype> <cmd> [<args> ...]


tool: D126: Linktypes:

tool: D75:   ethernet

tool: D130: Commands:

tool: D80:   add <name> <rootdev> <port>

tool: D59:   rm <name>

tool: D148:   hook <rootdev>

tool: D128:   unhook <rootdev>

tool: D28: Please report bugs to <dborkma@tik.ee.ethz.ch>

tool: D151: Copyright (C) 2011 Daniel Borkmann

tool: D120: License: GNU GPL version 2

tool: D70: This is free software: you are free to change and redistribute it.

tool: D0: There is NO WARRANTY, to the extent permitted by law.


assistant: ```c
void usage(void) {
  printf("\n%s %s\n", "vlink", "0.9");
  printf("Usage: %s <linktype> <cmd> [<args> ...]\n", "vlink");
  printf("Linktypes:\n");
  printf("  ethernet\n");
  printf("Commands:\n");
  printf("  add <name> <rootdev> <port>\n");
  printf("  rm <name>\n");
  printf("  hook <rootdev>\n");
  printf("  unhook <rootdev>\n");
  printf("\n");
  printf("Please report bugs to <dborkma@tik.ee.ethz.ch>\n");
  printf("Copyright (C) 2011 Daniel Borkmann\n");
  printf("License: GNU GPL version 2\n");
  printf("This is free software: you are free to change and redistribute it.\n");
  printf("There is NO WARRANTY, to the extent permitted by law.\n\n");
  die();
}
```