user: 这段汇编代码用C语言表示是什么样的：

```asm
<decode_ip_n_hash>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  push   %r13
  push   %r12
  push   %rbx
  sub    $0x38,%rsp
  mov    %rdi,-0x48(%rbp)
  mov    %esi,-0x4c(%rbp)
  mov    %edx,-0x50(%rbp)
  movl   $0x0,-0x34(%rbp)
  cmpl   $0x2,-0x4c(%rbp)
  jne    L5
  mov    $0xfffe,%edi
  call   <ntohs@plt>
  mov    -0x50(%rbp),%edx
  lea    (%rax,%rdx,1),%r12d
  mov    $0xfffd,%edi
  call   <ntohs@plt>
  mov    -0x50(%rbp),%edx
  lea    (%rax,%rdx,1),%ebx
  mov    -0x48(%rbp),%rax
  mov    0x8(%rax),%eax
  mov    %eax,%edi
  call   <ntohl@plt>
  mov    %eax,%r13d
  mov    -0x48(%rbp),%rax
  mov    0xc(%rax),%eax
  mov    %eax,%edi
  call   <ntohl@plt>
  mov    %r12d,%ecx
  mov    %ebx,%edx
  mov    %r13d,%esi
  mov    %eax,%edi
  call   <sym_hash_fn@plt>
  mov    %eax,-0x34(%rbp)
  jmp    L73
L5:
  movq   $0x0,-0x30(%rbp)
  movq   $0x0,-0x28(%rbp)
  mov    -0x48(%rbp),%rax
  mov    (%rax),%eax
  cmp    $0x82,%eax
  je     L57
  cmp    $0x82,%eax
  jg     L10
  cmp    $0x80,%eax
  je     L19
  cmp    $0x81,%eax
  jne    L10
  mov    -0x48(%rbp),%rax
  mov    0x4(%rax),%eax
  shl    $0x2,%eax
  cltq
  lea    0x0(,%rax,4),%rdx
  mov    -0x48(%rbp),%rax
  add    %rdx,%rax
  mov    %rax,-0x30(%rbp)
  mov    -0x30(%rbp),%rax
  mov    0x4(%rax),%eax
  mov    %eax,%edi
  call   <ntohs@plt>
  mov    -0x50(%rbp),%edx
  lea    (%rax,%rdx,1),%r12d
  mov    -0x30(%rbp),%rax
  mov    (%rax),%eax
  mov    %eax,%edi
  call   <ntohs@plt>
  mov    -0x50(%rbp),%edx
  lea    (%rax,%rdx,1),%ebx
  mov    -0x48(%rbp),%rax
  mov    0x8(%rax),%eax
  mov    %eax,%edi
  call   <ntohl@plt>
  mov    %eax,%r13d
  mov    -0x48(%rbp),%rax
  mov    0xc(%rax),%eax
  mov    %eax,%edi
  call   <ntohl@plt>
  mov    %r12d,%ecx
  mov    %ebx,%edx
  mov    %r13d,%esi
  mov    %eax,%edi
  call   <sym_hash_fn@plt>
  mov    %eax,-0x34(%rbp)
  jmp    L73
L19:
  mov    -0x48(%rbp),%rax
  mov    0x4(%rax),%eax
  shl    $0x2,%eax
  cltq
  lea    0x0(,%rax,4),%rdx
  mov    -0x48(%rbp),%rax
  add    %rdx,%rax
  mov    %rax,-0x28(%rbp)
  mov    -0x28(%rbp),%rax
  mov    0x4(%rax),%eax
  mov    %eax,%edi
  call   <ntohs@plt>
  mov    -0x50(%rbp),%edx
  lea    (%rax,%rdx,1),%r12d
  mov    -0x28(%rbp),%rax
  mov    (%rax),%eax
  mov    %eax,%edi
  call   <ntohs@plt>
  mov    -0x50(%rbp),%edx
  lea    (%rax,%rdx,1),%ebx
  mov    -0x48(%rbp),%rax
  mov    0x8(%rax),%eax
  mov    %eax,%edi
  call   <ntohl@plt>
  mov    %eax,%r13d
  mov    -0x48(%rbp),%rax
  mov    0xc(%rax),%eax
  mov    %eax,%edi
  call   <ntohl@plt>
  mov    %r12d,%ecx
  mov    %ebx,%edx
  mov    %r13d,%esi
  mov    %eax,%edi
  call   <sym_hash_fn@plt>
  mov    %eax,-0x34(%rbp)
  jmp    L73
L57:
  mov    -0x48(%rbp),%rax
  mov    0x4(%rax),%eax
  shl    $0x2,%eax
  cltq
  lea    0x0(,%rax,4),%rdx
  mov    -0x48(%rbp),%rax
  lea    (%rdx,%rax,1),%rcx
  mov    -0x50(%rbp),%edx
  mov    -0x4c(%rbp),%eax
  mov    %eax,%esi
  mov    %rcx,%rdi
  call   <decode_ip_n_hash>
  mov    %eax,-0x34(%rbp)
  jmp    L73
L10:
  mov    $0x0,%eax
  jmp    L44
L73:
  mov    -0x34(%rbp),%eax
L44:
  add    $0x38,%rsp
  pop    %rbx
  pop    %r12
  pop    %r13
  pop    %rbp
  ret
```

assistant: ```c
uint32_t decode_ip_n_hash(struct ip *iph, uint8_t hash_split, uint8_t seed) {
  uint32_t rc = 0;
  if (hash_split == 2) {
    rc = sym_hash_fn(ntohl(iph->ip_src.s_addr), ntohl(iph->ip_dst.s_addr), ntohs(0xFFFD) + seed, ntohs(0xFFFE) + seed);
  } else {
    struct tcphdr *tcph = NULL;
    struct udphdr *udph = NULL;
    switch (iph->ip_p) {
    case IPPROTO_TCP:
      tcph = (struct tcphdr *)((uint8_t *)iph + (iph->ip_hl << 2));
      rc = sym_hash_fn(ntohl(iph->ip_src.s_addr), ntohl(iph->ip_dst.s_addr), ntohs(tcph->th_sport) + seed, ntohs(tcph->th_dport) + seed);
      break;
    case IPPROTO_UDP:
      udph = (struct udphdr *)((uint8_t *)iph + (iph->ip_hl << 2));
      rc = sym_hash_fn(ntohl(iph->ip_src.s_addr), ntohl(iph->ip_dst.s_addr), ntohs(udph->uh_sport) + seed, ntohs(udph->uh_dport) + seed);
      break;
    case IPPROTO_IPIP:
      rc = decode_ip_n_hash((struct ip *)((uint8_t *)iph + (iph->ip_hl << 2)), hash_split, seed);
      break;
    default:
      return 0;
      break;
    }
  }
  return rc;
}
```