user: 请显示与下面列出的汇编代码相匹配的C语言实现：

```asm
<hexdump>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  sub    $0x20,%rsp
  mov    %rdi,-0x18(%rbp)
  mov    %esi,-0x1c(%rbp)
  mov    %edx,-0x20(%rbp)
  movl   $0x0,-0x8(%rbp)
  jmp    L35
L43:
  cmpl   $0x0,-0x8(%rbp)
  je     L75
  mov    -0x8(%rbp),%eax
  and    $0xf,%eax
  test   %eax,%eax
  jne    L75
  cmpl   $0x0,-0x20(%rbp)
  je     L105
  mov    $0x20,%edi
  call   <putchar@plt>
  mov    -0x8(%rbp),%eax
  sub    $0x10,%eax
  mov    %eax,-0x4(%rbp)
  jmp    L72
L115:
  mov    -0x4(%rbp),%eax
  movslq %eax,%rdx
  mov    -0x18(%rbp),%rax
  add    %rdx,%rax
  movzbl (%rax),%eax
  movzbl %al,%eax
  mov    %eax,%edi
  call   <isprint@plt>
  test   %rax,%rax
  je     L30
  mov    -0x4(%rbp),%eax
  movslq %eax,%rdx
  mov    -0x18(%rbp),%rax
  add    %rdx,%rax
  movzbl (%rax),%eax
  movsbl %al,%eax
  mov    %eax,%edi
  call   <putchar@plt>
  jmp    L55
L30:
  mov    $0x2e,%edi
  call   <putchar@plt>
L55:
  addl   $0x1,-0x4(%rbp)
L72:
  mov    -0x4(%rbp),%eax
  cmp    -0x8(%rbp),%eax
  jl     L115
L105:
  mov    $0xa,%edi
  call   <putchar@plt>
L75:
  mov    -0x8(%rbp),%eax
  movslq %eax,%rdx
  mov    -0x18(%rbp),%rax
  add    %rdx,%rax
  movzbl (%rax),%eax
  movzbl %al,%eax
  mov    %eax,%esi
  lea    D17(%rip),%rax
  mov    %rax,%rdi
  mov    $0x0,%eax
  call   <printf@plt>
  addl   $0x1,-0x8(%rbp)
L35:
  mov    -0x8(%rbp),%eax
  cmp    -0x1c(%rbp),%eax
  jl     L43
  cmpl   $0x0,-0x20(%rbp)
  je     L126
  mov    -0x8(%rbp),%eax
  mov    %eax,-0x4(%rbp)
  jmp    L143
L58:
  lea    D3(%rip),%rax
  mov    %rax,%rdi
  mov    $0x0,%eax
  call   <printf@plt>
  addl   $0x1,-0x4(%rbp)
L143:
  mov    -0x4(%rbp),%eax
  and    $0xf,%eax
  test   %eax,%eax
  jne    L58
  mov    $0x20,%edi
  call   <putchar@plt>
  mov    -0x8(%rbp),%eax
  lea    0xf(%rax),%edx
  test   %eax,%eax
  cmovs  %edx,%eax
  sar    $0x4,%eax
  shl    $0x4,%eax
  mov    %eax,-0x4(%rbp)
  jmp    L152
L146:
  mov    -0x4(%rbp),%eax
  movslq %eax,%rdx
  mov    -0x18(%rbp),%rax
  add    %rdx,%rax
  movzbl (%rax),%eax
  movzbl %al,%eax
  mov    %eax,%edi
  call   <isprint@plt>
  test   %rax,%rax
  je     L81
  mov    -0x4(%rbp),%eax
  movslq %eax,%rdx
  mov    -0x18(%rbp),%rax
  add    %rdx,%rax
  movzbl (%rax),%eax
  movsbl %al,%eax
  mov    %eax,%edi
  call   <putchar@plt>
  jmp    L38
L81:
  mov    $0x2e,%edi
  call   <putchar@plt>
L38:
  addl   $0x1,-0x4(%rbp)
L152:
  mov    -0x4(%rbp),%eax
  cmp    -0x8(%rbp),%eax
  jl     L146
L126:
  mov    $0xa,%edi
  call   <putchar@plt>
  nop
  leave
  ret
```

tool_calls: name: extract_symbolic_data
arguments: label: D17
data_type: string
name: extract_symbolic_data
arguments: label: D3
data_type: string

tool: D17: %02x 

tool: D3:    

assistant: ```c
void hexdump(unsigned char *buf, int len, int ascii) {
  int r, i;
  for (r = 0; r < len; r++) {
    if ((r) && ((r % 16) == 0)) {
      if (ascii) {
        putchar(' ');
        for (i = r - 16; i < r; i++) {
          if (isprint(buf[i]))
            putchar(buf[i]);
          else
            putchar('.');
        }
      }
      putchar('\n');
    }
    printf("%02x ", buf[r]);
  };
  if (ascii) {
    for (i = r; i % 16; i++)
      printf("   ");
    putchar(' ');
    for (i = 16 * (r / 16); i < r; i++) {
      if (isprint(buf[i]))
        putchar(buf[i]);
      else
        putchar('.');
    }
  }
  putchar('\n');
}
```