user: What is the c source code of the assembly code below:

```asm
<usage>:
  endbr64
  sub    $0x8,%rsp
  lea    D44(%rip),%rdi
  call   <puts@plt>
  lea    D99(%rip),%rdi
  call   <puts@plt>
  lea    D102(%rip),%rdi
  call   <puts@plt>
  lea    D51(%rip),%rdi
  call   <puts@plt>
  lea    D59(%rip),%rdi
  call   <puts@plt>
  lea    D95(%rip),%rdi
  call   <puts@plt>
  lea    D15(%rip),%rdi
  call   <puts@plt>
  lea    D111(%rip),%rdi
  call   <puts@plt>
  lea    D33(%rip),%rdi
  call   <puts@plt>
  lea    D97(%rip),%rdi
  call   <puts@plt>
  lea    D17(%rip),%rdi
  call   <puts@plt>
  lea    D46(%rip),%rdi
  call   <puts@plt>
  mov    $0xffffffff,%edi
  add    $0x8,%rsp
  jmp    1070 <exit@plt>
```

tool_calls: name: extract_symbolic_data
arguments: label: D44
type_infered: string
name: extract_symbolic_data
arguments: label: D99
type_infered: string
name: extract_symbolic_data
arguments: label: D102
type_infered: string
name: extract_symbolic_data
arguments: label: D51
type_infered: string
name: extract_symbolic_data
arguments: label: D59
type_infered: string
name: extract_symbolic_data
arguments: label: D95
type_infered: string
name: extract_symbolic_data
arguments: label: D15
type_infered: string
name: extract_symbolic_data
arguments: label: D111
type_infered: string
name: extract_symbolic_data
arguments: label: D33
type_infered: string
name: extract_symbolic_data
arguments: label: D97
type_infered: string
name: extract_symbolic_data
arguments: label: D17
type_infered: string
name: extract_symbolic_data
arguments: label: D46
type_infered: string

tool: D44: usage: rdev [ -rv ] [ -o OFFSET ] [ IMAGE [ VALUE [ OFFSET ] ] ]

tool: D99:   rdev /dev/fd0  (or rdev /linux, etc.) displays the current ROOT device

tool: D102:   rdev /dev/fd0 /dev/hda2         sets ROOT to /dev/hda2

tool: D51:   rdev -R /dev/fd0 1              set the ROOTFLAGS (readonly status)

tool: D59:   rdev -r /dev/fd0 627            set the RAMDISK size

tool: D95:   rdev -v /dev/fd0 1              set the bootup VIDEOMODE

tool: D15:   rdev -o N ...                   use the byte offset N

tool: D111:   rootflags ...                   same as rdev -R

tool: D33:   ramsize ...                     same as rdev -r

tool: D97:   vidmode ...                     same as rdev -v

tool: D17: Note: video modes are: -3=Ask, -2=Extended, -1=NormalVga, 1=key1, 2=key2,...

tool: D46:       use -R 1 to mount root readonly, -R 0 for read/write.

assistant: ```c
void usage(void) {
  puts(("usage: rdev [ -rv ] [ -o OFFSET ] [ IMAGE [ VALUE [ OFFSET ] ] ]"));
  puts(("  rdev /dev/fd0  (or rdev /linux, etc.) displays the current ROOT device"));
  puts(("  rdev /dev/fd0 /dev/hda2         sets ROOT to /dev/hda2"));
  puts(("  rdev -R /dev/fd0 1              set the ROOTFLAGS (readonly status)"));
  puts(("  rdev -r /dev/fd0 627            set the RAMDISK size"));
  puts(("  rdev -v /dev/fd0 1              set the bootup VIDEOMODE"));
  puts(("  rdev -o N ...                   use the byte offset N"));
  puts(("  rootflags ...                   same as rdev -R"));
  puts(("  ramsize ...                     same as rdev -r"));
  puts(("  vidmode ...                     same as rdev -v"));
  puts(("Note: video modes are: -3=Ask, -2=Extended, -1=NormalVga, 1=key1, 2=key2,..."));
  puts(("      use -R 1 to mount root readonly, -R 0 for read/write."));
  exit(-1);
}
```