user: Demonstrate the C code that generates the assembly output below:

```asm
<main>:
  endbr64
  push   %r13
  push   %r12
  push   %rbp
  sub    $0x410,%rsp
  mov    %fs:0x28,%rax
  mov    %rax,0x408(%rsp)
  xor    %eax,%eax
  cmp    $0x1,%edi
  jle    L28
  mov    0x8(%rsi),%rsi
  mov    %rsp,%r12
  mov    %r12,%rdi
  call   <strcpy@plt>
  lea    D28(%rip),%rsi
  mov    %r12,%rdi
  call   <fopen@plt>
  mov    %rax,%rbp
  test   %rax,%rax
  je     L43
  mov    $0x100000,%esi
  mov    $0x4,%edi
  call   <calloc@plt>
  mov    %rbp,%rcx
  mov    $0x400000,%edx
  mov    $0x1,%esi
  mov    %rax,%r12
  mov    %rax,%rdi
  call   <fread@plt>
  cmpb   $0x1,0x2c(%r12)
  mov    %rax,%r13
  je     L85
  movb   $0x1,0x2c(%r12)
  mov    %rbp,%rdi
  call   <rewind@plt>
  mov    %r12,%rdi
  mov    %rbp,%rcx
  mov    %r13,%rdx
  mov    $0x1,%esi
  call   <fwrite@plt>
  mov    %rbp,%rdi
  mov    %rax,%r12
  call   <fclose@plt>
  cmp    %r12,%r13
  je     L73
  lea    D50(%rip),%rdi
  mov    %r12,%rdx
  mov    %r13,%rsi
  xor    %eax,%eax
  call   <printf@plt>
  mov    $0xfffffffd,%edi
  jmp    L11
L28:
  lea    D12(%rip),%rdi
  call   <puts@plt>
  or     $0xffffffff,%edi
L11:
  call   <exit@plt>
  mov    0x408(%rsp),%rax
  sub    %fs:0x28,%rax
  jne    L67
  add    $0x410,%rsp
  xor    %eax,%eax
  pop    %rbp
  pop    %r12
  pop    %r13
  ret
L43:
  lea    D42(%rip),%rdi
  mov    %r12,%rsi
  xor    %eax,%eax
  call   <printf@plt>
  mov    $0xfffffffe,%edi
  jmp    L11
L73:
  lea    D8(%rip),%rdi
  mov    %r13,%rdx
  mov    %r13,%rsi
  xor    %eax,%eax
  call   <printf@plt>
  xor    %edi,%edi
  jmp    L11
L85:
  lea    D37(%rip),%rdi
  call   <puts@plt>
  mov    %rbp,%rdi
  call   <fclose@plt>
  xor    %edi,%edi
  jmp    L11
L67:
  call   <__stack_chk_fail@plt>
```

tool_calls: name: unpack_data
arguments: data_label: D28
type_infered: string
name: unpack_data
arguments: data_label: D50
type_infered: string
name: unpack_data
arguments: data_label: D12
type_infered: string
name: unpack_data
arguments: data_label: D42
type_infered: string
name: unpack_data
arguments: data_label: D8
type_infered: string
name: unpack_data
arguments: data_label: D37
type_infered: string

tool: D28: rb+

tool: D50: There was a problem writing the new kernel image! (bytes read=%ld, written=%ld)


tool: D12: What kernel image do you want me to patch?

tool: D42: Could not find kernel image: %s


tool: D8: Kernel image succesfully patched (%ld-%ld bytes read/write)


tool: D37: This kernel image is already patched

assistant: ```c
int main(int argc, char *argv[]) {
  unsigned char *patchme = NULL;
  unsigned long j = 0, k = 0;
  char chFilename[1024];
  signed int exit_code = -1;
  FILE *fp = NULL;
  if (argc < 2) {
    printf("What kernel image do you want me to patch?\n");
    exit_code = -1;
  } else {
    strcpy(chFilename, argv[1]);
    fp = fopen(chFilename, "rb+");
    if (!fp) {
      printf("Could not find kernel image: %s\n", chFilename);
      exit_code = -2;
    } else {
      patchme = (unsigned char *)calloc(4, (1024 * 1024));
      j = fread(patchme, sizeof(unsigned char), 4 * (1024 * 1024), fp);
      if (patchme[0x2c] == 0x01) {
        printf("This kernel image is already patched\n");
        fclose(fp);
        exit_code = 0;
      } else {
        patchme[0x2c] = 0x01;
        rewind(fp);
        k = fwrite(patchme, sizeof(unsigned char), j, fp);
        fclose(fp);
        if (k == j) {
          printf("Kernel image succesfully patched (%ld-%ld bytes read/write)\n", j, k);
          exit_code = 0;
        } else {
          printf("There was a problem writing the new kernel image! (bytes read=%ld, written=%ld)\n", j, k);
          exit_code = -3;
        }
      }
    }
  }
  exit(exit_code);
}
```