user: 请从给定的汇编指令推导出C源代码：

```asm
<hexdump>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  sub    $0x50,%rsp
  mov    %rdi,-0x38(%rbp)
  mov    %rsi,-0x40(%rbp)
  mov    %edx,-0x44(%rbp)
  mov    %fs:0x28,%rax
  mov    %rax,-0x8(%rbp)
  xor    %eax,%eax
  mov    -0x40(%rbp),%rax
  mov    %rax,-0x28(%rbp)
  movq   $0x0,-0x20(%rbp)
  movq   $0x0,-0x18(%rbp)
  movb   $0x0,-0x10(%rbp)
  movl   $0x0,-0x2c(%rbp)
  jmp    L93
L62:
  mov    -0x2c(%rbp),%eax
  and    $0xf,%eax
  test   %eax,%eax
  jne    L21
  cmpl   $0x0,-0x2c(%rbp)
  jle    L80
  lea    -0x20(%rbp),%rdx
  mov    -0x38(%rbp),%rax
  lea    D13(%rip),%rcx
  mov    %rcx,%rsi
  mov    %rax,%rdi
  mov    $0x0,%eax
  call   <fprintf@plt>
L80:
  lea    -0x20(%rbp),%rax
  mov    $0x10,%edx
  mov    $0x20,%esi
  mov    %rax,%rdi
  call   <memset@plt>
  mov    -0x2c(%rbp),%edx
  mov    -0x38(%rbp),%rax
  lea    D14(%rip),%rcx
  mov    %rcx,%rsi
  mov    %rax,%rdi
  mov    $0x0,%eax
  call   <fprintf@plt>
L21:
  mov    -0x2c(%rbp),%eax
  movslq %eax,%rdx
  mov    -0x28(%rbp),%rax
  add    %rdx,%rax
  movzbl (%rax),%eax
  movzbl %al,%edx
  mov    -0x38(%rbp),%rax
  lea    D47(%rip),%rcx
  mov    %rcx,%rsi
  mov    %rax,%rdi
  mov    $0x0,%eax
  call   <fprintf@plt>
  mov    -0x2c(%rbp),%eax
  movslq %eax,%rdx
  mov    -0x28(%rbp),%rax
  add    %rdx,%rax
  movzbl (%rax),%eax
  cmp    $0x1f,%al
  jbe    L2
  mov    -0x2c(%rbp),%eax
  movslq %eax,%rdx
  mov    -0x28(%rbp),%rax
  add    %rdx,%rax
  movzbl (%rax),%eax
  test   %al,%al
  js     L2
  mov    -0x2c(%rbp),%eax
  movslq %eax,%rdx
  mov    -0x28(%rbp),%rax
  add    %rdx,%rax
  movzbl (%rax),%edx
  jmp    L32
L2:
  mov    $0x2e,%edx
L32:
  mov    -0x2c(%rbp),%eax
  mov    %eax,%ecx
  sar    $0x1f,%ecx
  shr    $0x1c,%ecx
  add    %ecx,%eax
  and    $0xf,%eax
  sub    %ecx,%eax
  cltq
  mov    %dl,-0x20(%rbp,%rax,1)
  addl   $0x1,-0x2c(%rbp)
L93:
  mov    -0x2c(%rbp),%eax
  cmp    -0x44(%rbp),%eax
  jl     L62
  jmp    L82
L35:
  mov    -0x38(%rbp),%rax
  mov    %rax,%rcx
  mov    $0x3,%edx
  mov    $0x1,%esi
  lea    D10(%rip),%rax
  mov    %rax,%rdi
  call   <fwrite@plt>
L82:
  mov    -0x2c(%rbp),%eax
  lea    0x1(%rax),%edx
  mov    %edx,-0x2c(%rbp)
  and    $0xf,%eax
  test   %eax,%eax
  jne    L35
  lea    -0x20(%rbp),%rdx
  mov    -0x38(%rbp),%rax
  lea    D13(%rip),%rcx
  mov    %rcx,%rsi
  mov    %rax,%rdi
  mov    $0x0,%eax
  call   <fprintf@plt>
  nop
  mov    -0x8(%rbp),%rax
  sub    %fs:0x28,%rax
  je     L19
  call   <__stack_chk_fail@plt>
L19:
  leave
  ret
```

tool_calls: name: unpack_data
arguments: data_tag: D13
type_infered: string
name: unpack_data
arguments: data_tag: D14
type_infered: string
name: unpack_data
arguments: data_tag: D47
type_infered: string
name: unpack_data
arguments: data_tag: D10
type_infered: string

tool: D13:  %s


tool: D14: %08x  

tool: D47: %02x 

tool: D10:    

assistant: ```c
void hexdump(FILE *fl, void *buffer, int size) {
  unsigned char *c = buffer;
  unsigned char ascii[17] = {
      0,
  };
  int i;
  for (i = 0; i < size; i++) {
    if ((i % 16) == 0) {
      if (i > 0)
        fprintf(fl, " %s\n", ascii);
      memset(ascii, ' ', 16);
      fprintf(fl, "%08x  ", i);
    }
    fprintf(fl, "%02x ", c[i]);
    ascii[i % 16] = (c[i] >= 32 && c[i] <= 127) ? c[i] : '.';
  }
  while ((i++ % 16) != 0)
    fprintf(fl, "   ");
  fprintf(fl, " %s\n", ascii);
}
```