user: 这段汇编代码用C语言表示是什么样的？

```asm
<_hash_md5>:
  endbr64
  push   %r13
  push   %r12
  push   %rbp
  mov    %rdi,%rbp
  mov    $0x21,%edi
  sub    $0x30,%rsp
  mov    %fs:0x28,%rax
  mov    %rax,0x28(%rsp)
  xor    %eax,%eax
  call   <malloc@plt>
  mov    %rax,%r12
  test   %rax,%rax
  je     L8
  lea    0xc(%rsp),%r13
  mov    %r13,%rdi
  call   <MD5_Init@plt>
  mov    %rbp,%rdi
  call   <strlen@plt>
  mov    %rbp,%rsi
  mov    %r13,%rdi
  lea    0x10(%rsp),%rbp
  mov    %eax,%edx
  call   <MD5_Update@plt>
  mov    %r13,%rsi
  mov    %rbp,%rdi
  call   <MD5_Final@plt>
  lea    0x20(%r12),%rax
  cmp    %rax,%rbp
  jae    L28
  lea    0x20(%rsp),%rax
  cmp    %rax,%r12
  jb     L17
L28:
  movdqa 0x10(%rsp),%xmm0
  movdqa D35(%rip),%xmm5
  pxor   %xmm4,%xmm4
  movdqa D44(%rip),%xmm6
  movdqa D34(%rip),%xmm2
  psrlw  $0x4,%xmm0
  movdqa D32(%rip),%xmm3
  pand   %xmm5,%xmm0
  pand   0x10(%rsp),%xmm5
  movdqa %xmm0,%xmm1
  movdqa %xmm0,%xmm7
  psubusb %xmm6,%xmm0
  pcmpeqb %xmm4,%xmm0
  paddb  %xmm2,%xmm1
  paddb  %xmm3,%xmm7
  paddb  %xmm5,%xmm2
  paddb  %xmm5,%xmm3
  pand   %xmm0,%xmm1
  pandn  %xmm7,%xmm0
  por    %xmm1,%xmm0
  movdqa %xmm5,%xmm1
  psubusb %xmm6,%xmm1
  pcmpeqb %xmm4,%xmm1
  pand   %xmm1,%xmm2
  pandn  %xmm3,%xmm1
  por    %xmm2,%xmm1
  movdqa %xmm0,%xmm2
  punpcklbw %xmm1,%xmm2
  punpckhbw %xmm1,%xmm0
  movups %xmm2,(%r12)
  movups %xmm0,0x10(%r12)
L51:
  movb   $0x0,0x20(%r12)
L44:
  mov    0x28(%rsp),%rax
  sub    %fs:0x28,%rax
  jne    L22
  add    $0x30,%rsp
  mov    %r12,%rax
  pop    %rbp
  pop    %r12
  pop    %r13
  ret
  nopl   0x0(%rax,%rax,1)
L17:
  movzbl 0x10(%rsp),%eax
  shr    $0x4,%al
  lea    0x30(%rax),%ecx
  cmp    $0x9,%al
  lea    0x57(%rax),%edx
  mov    %ecx,%eax
  cmova  %edx,%eax
  mov    %al,(%r12)
  movzbl 0x10(%rsp),%eax
  and    $0xf,%eax
  lea    0x30(%rax),%ecx
  cmp    $0x9,%al
  lea    0x57(%rax),%edx
  mov    %ecx,%eax
  cmova  %edx,%eax
  mov    %al,0x1(%r12)
  movzbl 0x11(%rsp),%eax
  mov    %eax,%ecx
  shr    $0x4,%cl
  cmp    $0x9,%cl
  lea    0x30(%rcx),%esi
  lea    0x57(%rcx),%edx
  cmovbe %esi,%edx
  and    $0xf,%eax
  lea    0x30(%rax),%ecx
  cmp    $0x9,%al
  mov    %dl,0x2(%r12)
  lea    0x57(%rax),%edx
  mov    %ecx,%eax
  cmova  %edx,%eax
  mov    %al,0x3(%r12)
  movzbl 0x12(%rsp),%eax
  mov    %eax,%ecx
  shr    $0x4,%cl
  cmp    $0x9,%cl
  lea    0x30(%rcx),%esi
  lea    0x57(%rcx),%edx
  cmovbe %esi,%edx
  and    $0xf,%eax
  lea    0x30(%rax),%ecx
  cmp    $0x9,%al
  mov    %dl,0x4(%r12)
  lea    0x57(%rax),%edx
  mov    %ecx,%eax
  cmova  %edx,%eax
  mov    %al,0x5(%r12)
  movzbl 0x13(%rsp),%eax
  mov    %eax,%ecx
  shr    $0x4,%cl
  cmp    $0x9,%cl
  lea    0x30(%rcx),%esi
  lea    0x57(%rcx),%edx
  cmovbe %esi,%edx
  and    $0xf,%eax
  lea    0x30(%rax),%ecx
  cmp    $0x9,%al
  mov    %dl,0x6(%r12)
  lea    0x57(%rax),%edx
  mov    %ecx,%eax
  cmova  %edx,%eax
  mov    %al,0x7(%r12)
  movzbl 0x14(%rsp),%eax
  mov    %eax,%ecx
  shr    $0x4,%cl
  cmp    $0x9,%cl
  lea    0x30(%rcx),%esi
  lea    0x57(%rcx),%edx
  cmovbe %esi,%edx
  and    $0xf,%eax
  lea    0x30(%rax),%ecx
  cmp    $0x9,%al
  mov    %dl,0x8(%r12)
  lea    0x57(%rax),%edx
  mov    %ecx,%eax
  cmova  %edx,%eax
  mov    %al,0x9(%r12)
  movzbl 0x15(%rsp),%eax
  mov    %eax,%ecx
  shr    $0x4,%cl
  cmp    $0x9,%cl
  lea    0x30(%rcx),%esi
  lea    0x57(%rcx),%edx
  cmovbe %esi,%edx
  and    $0xf,%eax
  lea    0x30(%rax),%ecx
  cmp    $0x9,%al
  mov    %dl,0xa(%r12)
  lea    0x57(%rax),%edx
  mov    %ecx,%eax
  cmova  %edx,%eax
  mov    %al,0xb(%r12)
  movzbl 0x16(%rsp),%eax
  mov    %eax,%ecx
  shr    $0x4,%cl
  cmp    $0x9,%cl
  lea    0x30(%rcx),%esi
  lea    0x57(%rcx),%edx
  cmovbe %esi,%edx
  and    $0xf,%eax
  lea    0x30(%rax),%ecx
  cmp    $0x9,%al
  mov    %dl,0xc(%r12)
  lea    0x57(%rax),%edx
  mov    %ecx,%eax
  cmova  %edx,%eax
  mov    %al,0xd(%r12)
  movzbl 0x17(%rsp),%eax
  mov    %eax,%ecx
  shr    $0x4,%cl
  cmp    $0x9,%cl
  lea    0x30(%rcx),%esi
  lea    0x57(%rcx),%edx
  cmovbe %esi,%edx
  and    $0xf,%eax
  lea    0x30(%rax),%ecx
  cmp    $0x9,%al
  mov    %dl,0xe(%r12)
  lea    0x57(%rax),%edx
  mov    %ecx,%eax
  cmova  %edx,%eax
  mov    %al,0xf(%r12)
  movzbl 0x18(%rsp),%eax
  mov    %eax,%ecx
  shr    $0x4,%cl
  cmp    $0x9,%cl
  lea    0x30(%rcx),%esi
  lea    0x57(%rcx),%edx
  cmovbe %esi,%edx
  and    $0xf,%eax
  lea    0x30(%rax),%ecx
  cmp    $0x9,%al
  mov    %dl,0x10(%r12)
  lea    0x57(%rax),%edx
  mov    %ecx,%eax
  cmova  %edx,%eax
  mov    %al,0x11(%r12)
  movzbl 0x19(%rsp),%eax
  mov    %eax,%ecx
  shr    $0x4,%cl
  cmp    $0x9,%cl
  lea    0x30(%rcx),%esi
  lea    0x57(%rcx),%edx
  cmovbe %esi,%edx
  and    $0xf,%eax
  lea    0x30(%rax),%ecx
  cmp    $0x9,%al
  mov    %dl,0x12(%r12)
  lea    0x57(%rax),%edx
  mov    %ecx,%eax
  cmova  %edx,%eax
  mov    %al,0x13(%r12)
  movzbl 0x1a(%rsp),%eax
  mov    %eax,%ecx
  shr    $0x4,%cl
  cmp    $0x9,%cl
  lea    0x30(%rcx),%esi
  lea    0x57(%rcx),%edx
  cmovbe %esi,%edx
  and    $0xf,%eax
  lea    0x30(%rax),%ecx
  cmp    $0x9,%al
  mov    %dl,0x14(%r12)
  lea    0x57(%rax),%edx
  mov    %ecx,%eax
  cmova  %edx,%eax
  mov    %al,0x15(%r12)
  movzbl 0x1b(%rsp),%eax
  mov    %eax,%ecx
  shr    $0x4,%cl
  cmp    $0x9,%cl
  lea    0x30(%rcx),%esi
  lea    0x57(%rcx),%edx
  cmovbe %esi,%edx
  and    $0xf,%eax
  lea    0x30(%rax),%ecx
  cmp    $0x9,%al
  mov    %dl,0x16(%r12)
  lea    0x57(%rax),%edx
  mov    %ecx,%eax
  cmova  %edx,%eax
  mov    %al,0x17(%r12)
  movzbl 0x1c(%rsp),%eax
  mov    %eax,%ecx
  shr    $0x4,%cl
  cmp    $0x9,%cl
  lea    0x30(%rcx),%esi
  lea    0x57(%rcx),%edx
  cmovbe %esi,%edx
  and    $0xf,%eax
  lea    0x30(%rax),%ecx
  cmp    $0x9,%al
  mov    %dl,0x18(%r12)
  lea    0x57(%rax),%edx
  mov    %ecx,%eax
  cmova  %edx,%eax
  mov    %al,0x19(%r12)
  movzbl 0x1d(%rsp),%eax
  mov    %eax,%ecx
  shr    $0x4,%cl
  cmp    $0x9,%cl
  lea    0x30(%rcx),%esi
  lea    0x57(%rcx),%edx
  cmovbe %esi,%edx
  and    $0xf,%eax
  lea    0x30(%rax),%ecx
  cmp    $0x9,%al
  mov    %dl,0x1a(%r12)
  lea    0x57(%rax),%edx
  mov    %ecx,%eax
  cmova  %edx,%eax
  mov    %al,0x1b(%r12)
  movzbl 0x1e(%rsp),%eax
  mov    %eax,%ecx
  shr    $0x4,%cl
  cmp    $0x9,%cl
  lea    0x30(%rcx),%esi
  lea    0x57(%rcx),%edx
  cmovbe %esi,%edx
  and    $0xf,%eax
  lea    0x30(%rax),%ecx
  cmp    $0x9,%al
  mov    %dl,0x1c(%r12)
  lea    0x57(%rax),%edx
  mov    %ecx,%eax
  cmova  %edx,%eax
  mov    %al,0x1d(%r12)
  movzbl 0x1f(%rsp),%eax
  mov    %eax,%ecx
  shr    $0x4,%cl
  cmp    $0x9,%cl
  lea    0x30(%rcx),%esi
  lea    0x57(%rcx),%edx
  cmovbe %esi,%edx
  and    $0xf,%eax
  lea    0x30(%rax),%ecx
  cmp    $0x9,%al
  mov    %dl,0x1e(%r12)
  lea    0x57(%rax),%edx
  mov    %ecx,%eax
  cmova  %edx,%eax
  mov    %al,0x1f(%r12)
  jmp    L51
L8:
  mov    $0x1,%esi
  lea    D31(%rip),%rdi
  call   <_error@plt>
  jmp    L44
L22:
  call   <__stack_chk_fail@plt>
```

tool_calls: name: extract_symbolic_data
arguments: data_tag: D35
data_type: byte[16]
name: extract_symbolic_data
arguments: data_tag: D44
data_type: byte[16]
name: extract_symbolic_data
arguments: data_tag: D34
data_type: byte[16]
name: extract_symbolic_data
arguments: data_tag: D32
data_type: byte[16]
name: extract_symbolic_data
arguments: data_tag: D31
data_type: string

tool: {"D35": [0x0f,0x0f,0x0f,0x0f,0x0f,0x0f,0x0f,0x0f,0x0f,0x0f,0x0f,0x0f,0x0f,0x0f,0x0f,0x0f]}

tool: {"D44": [0x09,0x09,0x09,0x09,0x09,0x09,0x09,0x09,0x09,0x09,0x09,0x09,0x09,0x09,0x09,0x09]}

tool: {"D34": [0x30,0x30,0x30,0x30,0x30,0x30,0x30,0x30,0x30,0x30,0x30,0x30,0x30,0x30,0x30,0x30]}

tool: {"D32": [0x57,0x57,0x57,0x57,0x57,0x57,0x57,0x57,0x57,0x57,0x57,0x57,0x57,0x57,0x57,0x57]}

tool: D31: malloc

assistant: ```c
char *_hash_md5(char const *password) {
  char *ret;
  unsigned char digest[16];
  const int len = sizeof(digest);
  unsigned short i;
  unsigned char j;
  MD5_CTX c;
  if ((ret = malloc((len * 2) + 1)) == NULL) {
    _error("malloc", 1);
    return NULL;
  }
  MD5_Init(&c);
  MD5_Update(&c, password, strlen(password));
  MD5_Final(digest, &c);
  for (i = 0; i < len; i++) {
    j = (digest[i] >> 4) & 0xf;
    if (j <= 9)
      ret[i * 2] = (j + '0');
    else
      ret[i * 2] = (j + 'a' - 10);
    j = digest[i] & 0xf;
    if (j <= 9)
      ret[i * 2 + 1] = (j + '0');
    else
      ret[i * 2 + 1] = (j + 'a' - 10);
  }
  ret[len * 2] = '\0';
  return ret;
}
```