user: 请将以下的汇编代码转换成C语言代码:

```asm
<usage>:
  endbr64
  push   %rbx
  mov    %edi,%ebx
  lea    D3(%rip),%rdi
  call   <printf@plt>
  mov    %ebx,%edi
  call   <exit@plt>
  pop    %rbx
  ret
```

tool_calls: name: unpack_data
arguments: data_label: D3
type_infered: string

tool: D3: Usage: smd_pkt_loopback_test [OPTIONS] [PARAMS] [TEST_TYPE]...
Runs the loopback test with parameters specified
over a SMD PKT device.  /dev/smd_pkt_loopback will beused if a device is not specified

OPTIONS can be:
  -v, --verbose         run with debug messages on (NOTE:
                           currently has no effect).
  -h, --help            print this help message and exit
  -c, --nocheck         donot check the integrity of data
  -w, --blocking_write use blocking writes

PARAMS can be:
  -b, --bytes           write/read buffer size (default 2 bytes)
  -i, --iterations      number of test iterations (default 1)
  -p, --pattern         pattern to be written (default 0xfa)
  -d, --delay TIME      delay after iterations/2 by TIME seconds
  -f, --file            The character device to use (default
                           /dev/smd_pkt_loopback)

TEST_TYPE can be:
  -n, --nominal         run standard functionality tests
  -a, --adversarial     run tests that try to break the
                          driver, not supported currently
  -s, --stress          run tests that try to maximize the
                          capacity of the driver,
                          not supported currently
  -r, --repeatability   run 10 iterations of both the
                          nominal and adversarial tests,
                          not supported currently


assistant: ```c
void usage(int ret) {
  printf("Usage: smd_pkt_loopback_test [OPTIONS] [PARAMS] [TEST_TYPE]...\n"
         "Runs the loopback test with parameters specified\n"
         "over a SMD PKT device.  /dev/smd_pkt_loopback will be"
         "used if a device is not specified\n"
         "\n"
         "OPTIONS can be:\n"
         "  -v, --verbose         run with debug messages on (NOTE:\n"
         "                           currently has no effect).\n"
         "  -h, --help            print this help message and exit\n"
         "  -c, --nocheck         donot check the integrity of data\n"
         "  -w, --blocking_write use blocking writes\n"
         "\nPARAMS can be:\n"
         "  -b, --bytes           write/read buffer size (default 2 bytes)\n"
         "  -i, --iterations      number of test iterations (default 1)\n"
         "  -p, --pattern         pattern to be written (default 0xfa)\n"
         "  -d, --delay TIME      delay after iterations/2 by TIME seconds\n"
         "  -f, --file            The character device to use (default\n"
         "                           /dev/smd_pkt_loopback)\n"
         "\n"
         "TEST_TYPE can be:\n"
         "  -n, --nominal         run standard functionality tests\n"
         "  -a, --adversarial     run tests that try to break the\n"
         "                          driver, not supported currently\n"
         "  -s, --stress          run tests that try to maximize the\n"
         "                          capacity of the driver,\n"
         "                          not supported currently\n"
         "  -r, --repeatability   run 10 iterations of both the\n"
         "                          nominal and adversarial tests,\n"
         "                          not supported currently\n");
  exit(ret);
}
```