user: 提供的汇编代码用C语言表示会是什么样子:

```asm
<inet_aton>:
  endbr64
  push   %r15
  push   %r14
  push   %r13
  push   %r12
  push   %rbp
  push   %rbx
  sub    $0x48,%rsp
  mov    %rdi,%rbp
  mov    %rsi,0x18(%rsp)
  mov    %fs:0x28,%rax
  mov    %rax,0x38(%rsp)
  xor    %eax,%eax
  movzbl (%rdi),%r13d
  lea    0x20(%rsp),%rax
  mov    %rax,0x10(%rsp)
  jmp    L389
L195:
  movzbl 0x1(%rbp),%r13d
  mov    %r13d,%eax
  and    $0xffffffdf,%eax
  cmp    $0x58,%al
  je     L161
  add    $0x1,%rbp
  mov    $0x8,%r15d
  jmp    L111
L161:
  movzbl 0x2(%rbp),%r13d
  lea    0x2(%rbp),%rbp
  mov    $0x10,%r15d
  jmp    L111
L164:
  cmp    $0x10,%r15d
  jne    L87
  mov    %ebx,%edi
  call   <isascii@plt>
  test   %rax,%rax
  je     L87
  mov    %ebx,%edi
  call   <isxdigit@plt>
  test   %rax,%rax
  je     L87
  shl    $0x4,%r12
  lea    0xa(%rbx),%r13d
  mov    %ebx,%edi
  call   <islower@plt>
  cmp    $0x1,%rax
  sbb    %eax,%eax
  and    $0xffffffe0,%eax
  add    $0x61,%eax
  sub    %eax,%r13d
  movslq %r13d,%r13
  or     %r13,%r12
  movzbl 0x0(%rbp),%r13d
L288:
  add    $0x1,%rbp
L369:
  lea    -0x1(%rbp),%r14
  movsbl %r13b,%ebx
  mov    %ebx,%edi
  call   <isascii@plt>
  test   %rax,%rax
  je     L164
  mov    %ebx,%edi
  call   <isdigit@plt>
  test   %rax,%rax
  je     L164
  imul   0x8(%rsp),%r12
  sub    $0x30,%ebx
  movslq %ebx,%rbx
  add    %rbx,%r12
  movzbl 0x0(%rbp),%r13d
  jmp    L288
L87:
  cmp    $0x2e,%r13b
  jne    L244
  lea    0x2c(%rsp),%rax
  mov    0x10(%rsp),%rcx
  cmp    %rax,%rcx
  je     L172
  add    $0x4,%rcx
  mov    %rcx,0x10(%rsp)
  mov    %r12d,-0x4(%rcx)
  lea    0x1(%r14),%rbp
  movzbl 0x1(%r14),%r13d
L389:
  movsbl %r13b,%edi
  call   <isdigit@plt>
  test   %rax,%rax
  je     L53
  mov    $0xa,%r15d
  cmp    $0x30,%r13b
  je     L195
L111:
  add    $0x1,%rbp
  mov    $0x0,%r12d
  movslq %r15d,%rax
  mov    %rax,0x8(%rsp)
  jmp    L369
L244:
  test   %r13b,%r13b
  jne    L318
L368:
  lea    0x20(%rsp),%rdx
  mov    0x10(%rsp),%rax
  sub    %rdx,%rax
  sar    $0x2,%rax
  lea    0x1(%rax),%edx
  cmp    $0x2,%eax
  je     L153
  cmp    $0x3,%edx
  ja     L250
  mov    $0x0,%eax
  test   %edx,%edx
  je     L115
  cmp    $0x2,%edx
  jne    L281
  mov    $0x0,%eax
  cmp    $0xffffff,%r12
  ja     L115
  mov    0x20(%rsp),%edx
  cmp    $0xff,%edx
  ja     L115
  mov    %edx,%eax
  shl    $0x18,%eax
  mov    %eax,%eax
  or     %rax,%r12
L281:
  mov    $0x1,%eax
  mov    0x18(%rsp),%rbx
  test   %rbx,%rbx
  je     L115
  mov    %r12,%rdi
  call   <htonl@plt>
  mov    %eax,(%rbx)
  mov    $0x1,%eax
  jmp    L115
L318:
  mov    %ebx,%edi
  call   <isascii@plt>
  mov    %rax,%rdx
  mov    $0x0,%eax
  test   %rdx,%rdx
  je     L115
  mov    %ebx,%edi
  call   <isspace@plt>
  test   %eax,%eax
  jne    L368
  jmp    L115
L250:
  cmp    $0x4,%edx
  jne    L281
  mov    $0x0,%eax
  cmp    $0xff,%r12
  ja     L115
  mov    0x20(%rsp),%edx
  cmp    $0xff,%edx
  ja     L115
  mov    0x24(%rsp),%esi
  cmp    $0xff,%esi
  ja     L115
  mov    0x28(%rsp),%ecx
  cmp    $0xff,%ecx
  ja     L115
  mov    %edx,%eax
  shl    $0x18,%eax
  shl    $0x10,%esi
  or     %esi,%eax
  shl    $0x8,%ecx
  or     %ecx,%eax
  mov    %eax,%eax
  or     %rax,%r12
  jmp    L281
L153:
  mov    $0x0,%eax
  cmp    $0xffff,%r12
  ja     L115
  mov    0x20(%rsp),%edx
  cmp    $0xff,%edx
  ja     L115
  mov    0x24(%rsp),%ecx
  cmp    $0xff,%ecx
  ja     L115
  mov    %edx,%eax
  shl    $0x18,%eax
  shl    $0x10,%ecx
  or     %ecx,%eax
  mov    %eax,%eax
  or     %rax,%r12
  jmp    L281
L53:
  mov    $0x0,%eax
  jmp    L115
L172:
  mov    $0x0,%eax
L115:
  mov    0x38(%rsp),%rdx
  sub    %fs:0x28,%rdx
  jne    L254
  add    $0x48,%rsp
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  ret
L254:
  call   <__stack_chk_fail@plt>
```

assistant: ```c
int inet_aton(const char *cp, struct in_addr *addr) {
  register unsigned long val;
  register int base, n;
  register char c;
  unsigned int parts[4];
  register unsigned int *pp = parts;
  c = *cp;
  for (;;) {
    if (!isdigit(c))
      return (0);
    val = 0;
    base = 10;
    if (c == '0') {
      c = *++cp;
      if (c == 'x' || c == 'X')
        base = 16, c = *++cp;
      else
        base = 8;
    }
    for (;;) {
      if (isascii(c) && isdigit(c)) {
        val = (val * base) + (c - '0');
        c = *++cp;
      } else if (base == 16 && isascii(c) && isxdigit(c)) {
        val = (val << 4) | (c + 10 - (islower(c) ? 'a' : 'A'));
        c = *++cp;
      } else
        break;
    }
    if (c == '.') {
      if (pp >= parts + 3)
        return (0);
      *pp++ = val;
      c = *++cp;
    } else
      break;
  }
  if (c != '\0' && (!isascii(c) || !isspace(c)))
    return (0);
  n = pp - parts + 1;
  switch (n) {
  case 0:
    return (0);
  case 1:
    break;
  case 2:
    if ((val > 0xffffff) || (parts[0] > 0xff))
      return (0);
    val |= parts[0] << 24;
    break;
  case 3:
    if ((val > 0xffff) || (parts[0] > 0xff) || (parts[1] > 0xff))
      return (0);
    val |= (parts[0] << 24) | (parts[1] << 16);
    break;
  case 4:
    if ((val > 0xff) || (parts[0] > 0xff) || (parts[1] > 0xff) || (parts[2] > 0xff))
      return (0);
    val |= (parts[0] << 24) | (parts[1] << 16) | (parts[2] << 8);
    break;
  }
  if (addr)
    addr->s_addr = htonl(val);
  return (1);
}
```