user: 请将以下的汇编代码转换成C语言代码：

```asm
<hexdump>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  sub    $0x50,%rsp
  mov    %rdi,-0x38(%rbp)
  mov    %rsi,-0x40(%rbp)
  mov    %rdx,-0x48(%rbp)
  mov    %fs:0x28,%rax
  mov    %rax,-0x8(%rbp)
  xor    %eax,%eax
  mov    -0x40(%rbp),%rax
  mov    %rax,-0x28(%rbp)
  cmpq   $0x0,-0x38(%rbp)
  je     L72
  mov    -0x38(%rbp),%rax
  mov    %rax,%rsi
  lea    D22(%rip),%rax
  mov    %rax,%rdi
  mov    $0x0,%eax
  call   <printf@plt>
L72:
  movq   $0x0,-0x30(%rbp)
  jmp    L1
L74:
  mov    -0x30(%rbp),%rax
  and    $0xf,%eax
  test   %rax,%rax
  jne    L82
  cmpq   $0x0,-0x30(%rbp)
  je     L41
  lea    -0x20(%rbp),%rax
  mov    %rax,%rsi
  lea    D26(%rip),%rax
  mov    %rax,%rdi
  mov    $0x0,%eax
  call   <printf@plt>
L41:
  mov    -0x30(%rbp),%rax
  mov    %rax,%rsi
  lea    D20(%rip),%rax
  mov    %rax,%rdi
  mov    $0x0,%eax
  call   <printf@plt>
L82:
  mov    -0x28(%rbp),%rdx
  mov    -0x30(%rbp),%rax
  add    %rdx,%rax
  movzbl (%rax),%eax
  movzbl %al,%eax
  mov    %eax,%esi
  lea    D11(%rip),%rax
  mov    %rax,%rdi
  mov    $0x0,%eax
  call   <printf@plt>
  mov    -0x28(%rbp),%rdx
  mov    -0x30(%rbp),%rax
  add    %rdx,%rax
  movzbl (%rax),%eax
  cmp    $0x1f,%al
  jbe    L61
  mov    -0x28(%rbp),%rdx
  mov    -0x30(%rbp),%rax
  add    %rdx,%rax
  movzbl (%rax),%eax
  cmp    $0x7e,%al
  jbe    L91
L61:
  mov    -0x30(%rbp),%rax
  and    $0xf,%eax
  movb   $0x2e,-0x20(%rbp,%rax,1)
  jmp    L27
L91:
  mov    -0x28(%rbp),%rdx
  mov    -0x30(%rbp),%rax
  add    %rdx,%rax
  mov    -0x30(%rbp),%rdx
  and    $0xf,%edx
  movzbl (%rax),%eax
  mov    %al,-0x20(%rbp,%rdx,1)
L27:
  mov    -0x30(%rbp),%rax
  and    $0xf,%eax
  add    $0x1,%rax
  movb   $0x0,-0x20(%rbp,%rax,1)
  addq   $0x1,-0x30(%rbp)
L1:
  mov    -0x30(%rbp),%rax
  cmp    -0x48(%rbp),%rax
  jb     L74
  jmp    L40
L102:
  lea    D50(%rip),%rax
  mov    %rax,%rdi
  mov    $0x0,%eax
  call   <printf@plt>
  addq   $0x1,-0x30(%rbp)
L40:
  mov    -0x30(%rbp),%rax
  and    $0xf,%eax
  test   %rax,%rax
  jne    L102
  lea    -0x20(%rbp),%rax
  mov    %rax,%rsi
  lea    D26(%rip),%rax
  mov    %rax,%rdi
  mov    $0x0,%eax
  call   <printf@plt>
  nop
  mov    -0x8(%rbp),%rax
  sub    %fs:0x28,%rax
  je     L89
  call   <__stack_chk_fail@plt>
L89:
  leave
  ret
```

tool_calls: name: extract_symbolic_data
arguments: label: D22
type_guessed: string
name: extract_symbolic_data
arguments: label: D26
type_guessed: string
name: extract_symbolic_data
arguments: label: D20
type_guessed: string
name: extract_symbolic_data
arguments: label: D11
type_guessed: string
name: extract_symbolic_data
arguments: label: D50
type_guessed: string

tool: D22: %s:


tool: D26:   %s


tool: D20:   %04zx 

tool: D11:  %02x

tool: D50:    

assistant: ```c
void hexdump(const char *desc, const void *addr, size_t len) {
  size_t i;
  unsigned char buff[17];
  const unsigned char *pc = addr;
  if (desc != NULL)
    printf("%s:\n", desc);
  for (i = 0; i < len; i++) {
    if ((i % 16) == 0) {
      if (i != 0)
        printf("  %s\n", buff);
      printf("  %04zx ", i);
    }
    printf(" %02x", pc[i]);
    if ((pc[i] < 0x20) || (pc[i] > 0x7e))
      buff[i % 16] = '.';
    else
      buff[i % 16] = pc[i];
    buff[(i % 16) + 1] = '\0';
  }
  while ((i % 16) != 0) {
    printf("   ");
    i++;
  }
  printf("  %s\n", buff);
}
```