user: 请从给定的汇编指令推导出C源代码：

```asm
<usage>:
  endbr64
  sub    $0x8,%rsp
  lea    D15(%rip),%rsi
  lea    D18(%rip),%rdi
  call   <printf@plt>
  mov    $0x0,%edi
  call   <exit@plt>
  add    $0x8,%rsp
  ret
```

tool_calls: name: read_data
arguments: data_label: D15
data_type: string
name: read_data
arguments: data_label: D18
data_type: string

tool: D15: lookbusy [ -h ] [ options ]
General options:
  -h, --help           Commandline help (you're reading it)
  -v, --verbose        Verbose output (may be repeated)
  -q, --quiet          Be quiet, produce output on errors only
CPU usage options:
  -c, --cpu-util=PCT,  Desired utilization of each CPU, in percent (default
      --cpu-util=RANGE   50%).  If 'curve' CPU usage mode is chosen, a range
                         of the form MIN-MAX should be given.
  -n, --ncpus=NUM      Number of CPUs to keep busy (default: autodetected)
  -r, --cpu-mode=MODE  Utilization mode ('fixed' or 'curve', see lookbusy(1))
  -p, --cpu-curve-peak=TIME
                       Offset of peak utilization within curve period, in
                         seconds (append 'm', 'h', 'd' for other units)
  -P, --cpu-curve-period=TIME
                       Duration of utilization curve period, in seconds (append
		       'm', 'h', 'd' for other units)
Memory usage options:
  -m, --mem-util=SIZE   Amount of memory to use (in bytes, followed by KB, MB,
                         or GB for other units; see lookbusy(1))
  -M, --mem-sleep=TIME Time to sleep between iterations, in usec (default 1000)
Disk usage options:
  -d, --disk-util=SIZE Size of files to use for disk churn (in bytes,
                         followed by KB, MB, GB or TB for other units)
  -b, --disk-block-size=SIZE
                       Size of blocks to use for I/O (in bytes, followed
                         by KB, MB or GB)
  -D, --disk-sleep=TIME
                       Time to sleep between iterations, in msec (default 100)
  -f, --disk-path=PATH Path to a file/directory to use as a buffer (default
                         /tmp); specify multiple times for additional paths


tool: D18: usage: %s

assistant: ```c
void usage() {
  static const char *msg = "lookbusy [ -h ] [ options ]\n"
                           "General options:\n"
                           "  -h, --help           Commandline help (you're reading it)\n"
                           "  -v, --verbose        Verbose output (may be repeated)\n"
                           "  -q, --quiet          Be quiet, produce output on errors only\n"
                           "CPU usage options:\n"
                           "  -c, --cpu-util=PCT,  Desired utilization of each CPU, in percent (default\n"
                           "      --cpu-util=RANGE   50%).  If 'curve' CPU usage mode is chosen, a range\n"
                           "                         of the form MIN-MAX should be given.\n"
                           "  -n, --ncpus=NUM      Number of CPUs to keep busy (default: autodetected)\n"
                           "  -r, --cpu-mode=MODE  Utilization mode ('fixed' or 'curve', see lookbusy(1))\n"
                           "  -p, --cpu-curve-peak=TIME\n"
                           "                       Offset of peak utilization within curve period, in\n"
                           "                         seconds (append 'm', 'h', 'd' for other units)\n"
                           "  -P, --cpu-curve-period=TIME\n"
                           "                       Duration of utilization curve period, in seconds (append\n"
                           "		       'm', 'h', 'd' for other units)\n"
                           "Memory usage options:\n"
                           "  -m, --mem-util=SIZE   Amount of memory to use (in bytes, followed by KB, MB,\n"
                           "                         or GB for other units; see lookbusy(1))\n"
                           "  -M, --mem-sleep=TIME Time to sleep between iterations, in usec (default 1000)\n"
                           "Disk usage options:\n"
                           "  -d, --disk-util=SIZE Size of files to use for disk churn (in bytes,\n"
                           "                         followed by KB, MB, GB or TB for other units)\n"
                           "  -b, --disk-block-size=SIZE\n"
                           "                       Size of blocks to use for I/O (in bytes, followed\n"
                           "                         by KB, MB or GB)\n"
                           "  -D, --disk-sleep=TIME\n"
                           "                       Time to sleep between iterations, in msec (default 100)\n"
                           "  -f, --disk-path=PATH Path to a file/directory to use as a buffer (default\n"
                           "                         /tmp); specify multiple times for additional paths\n"
                           "";
  printf("usage: %s", msg);
  exit(0);
}
```