user: 请从给定的汇编指令推导出C源代码：

```asm
<showHelp>:
  endbr64
  lea    D4(%rip),%rdi
  jmp    1050 <puts@plt>
```

tool_calls: name: extract_symbolic_data
arguments: tag: D4
type: string

tool: D4: Raw image data to PNG converter
There are two ways to specify a file the first is to simply specify a file
Using the -f argument you can specify a file that you want to convert
Another option that you have is to have files that start with a number and end in .RAW
This program will count from 0 and convert those images and keep going until fopen fails
You can also convert just one numbered image with the -n argument
-n x replace x with the image number you want to convert
-h or --help shows the message that you are viewing right now
-o x replace x with a real positive integer that is less than the filesize of the image in which you are opening
This skips x number of bytes
-a x replace x with the amount of frames that you wish to average
Don't use this if you don't want to average frames
-c picks which algorithm you would like to use.
You can specify either 'y', 'ya', 'd', 'dq', 'dn', 'dl' but without the quotes and commas
y means yuv422 conversion
r means rgb565
dq means to generate quarter resolution from bayer data but it does not do any interpolation instead it takes the 4 one color pixels and makes one. The two greens are averaged.
dn means use nearest neighbor demosaicing instead of bilinear
d (default) is a higher quality demosaicing algorithm based on
https://research.microsoft.com/en-us/um/people/lhe/papers/icassp04.demosaicing.pdf
dl is simple bilinear demosaicing
da is adaptive demoasicing based on method by Hamilton and Adams
-w specifies width (defaults to 640)
-H specifies height (defaults to 480)
-sq square root curves the image
(This makes the image brighter without too much clipping)
using this formula sqrt(255.0)*sqrt(x)-s sine curves the image using this formula
(int)floor((sin((double)x/(255.0/PI*2.075))*255.0)+0.5)
-sq and -s can be combined

assistant: ```c
void showHelp() {
  puts("Raw image data to PNG converter\n"
       "There are two ways to specify a file the first is to simply specify a file\n"
       "Using the -f argument you can specify a file that you want to convert\n"
       "Another option that you have is to have files that start with a number and end in .RAW\n"
       "This program will count from 0 and convert those images and keep going until fopen fails\n"
       "You can also convert just one numbered image with the -n argument\n"
       "-n x replace x with the image number you want to convert\n"
       "-h or --help shows the message that you are viewing right now\n"
       "-o x replace x with a real positive integer that is less than the filesize of the image in which you are opening\n"
       "This skips x number of bytes\n"
       "-a x replace x with the amount of frames that you wish to average\n"
       "Don't use this if you don't want to average frames\n"
       "-c picks which algorithm you would like to use.\n"
       "You can specify either 'y', 'ya', 'd', 'dq', 'dn', 'dl' but without the quotes and commas\n"
       "y means yuv422 conversion\n"
       "r means rgb565\n"
       "dq means to generate quarter resolution from bayer data but it does not do any interpolation instead it takes the 4 one color pixels and makes one. The two greens are averaged.\n"
       "dn means use nearest neighbor demosaicing instead of bilinear\n"
       "d (default) is a higher quality demosaicing algorithm based on\n"
       "https://research.microsoft.com/en-us/um/people/lhe/papers/icassp04.demosaicing.pdf\n"
       "dl is simple bilinear demosaicing\n"
       "da is adaptive demoasicing based on method by Hamilton and Adams\n"
       "-w specifies width (defaults to 640)\n"
       "-H specifies height (defaults to 480)\n"
       "-sq square root curves the image\n"
       "(This makes the image brighter without too much clipping)\n"
       "using this formula sqrt(255.0)*sqrt(x)"
       "-s sine curves the image using this formula\n"
       "(int)floor((sin((double)x/(255.0/PI*2.075))*255.0)+0.5)\n"
       "-sq and -s can be combined");
}
```