user: 请显示与下面列出的汇编代码相匹配的C语言实现：

```asm
<flip80>:
  endbr64
  mov    %rdi,%rax
  mov    %rdi,%r8
  sub    %rsi,%rax
  sub    $0x2,%rax
  cmp    $0x1c,%rax
  jbe    L18
  movdqu (%rsi),%xmm1
  movdqu 0x10(%rsi),%xmm4
  movdqa %xmm1,%xmm0
  movdqa %xmm1,%xmm2
  punpcklwd %xmm4,%xmm0
  punpckhwd %xmm4,%xmm2
  movdqa %xmm0,%xmm3
  punpcklwd %xmm2,%xmm0
  punpckhwd %xmm2,%xmm3
  movdqa D9(%rip),%xmm2
  punpcklwd %xmm3,%xmm0
  movdqa %xmm0,%xmm3
  psllw  $0x8,%xmm0
  psrlw  $0x8,%xmm3
  por    %xmm0,%xmm3
  movdqa %xmm1,%xmm0
  psrad  $0x10,%xmm0
  psrad  $0x18,%xmm1
  movdqa %xmm3,%xmm5
  pslld  $0x8,%xmm0
  pand   %xmm2,%xmm0
  por    %xmm1,%xmm0
  pxor   %xmm1,%xmm1
  punpcklwd %xmm1,%xmm5
  punpckhwd %xmm1,%xmm3
  pslld  $0x10,%xmm5
  pslld  $0x10,%xmm3
  por    %xmm5,%xmm0
  movups %xmm0,(%rdi)
  movdqa %xmm4,%xmm0
  psrad  $0x18,%xmm4
  psrad  $0x10,%xmm0
  pslld  $0x8,%xmm0
  pand   %xmm2,%xmm0
  por    %xmm4,%xmm0
  por    %xmm3,%xmm0
  movups %xmm0,0x10(%rdi)
  movdqu 0x20(%rsi),%xmm4
  movdqu 0x30(%rsi),%xmm5
  movdqa %xmm4,%xmm0
  movdqa %xmm4,%xmm3
  punpcklwd %xmm5,%xmm0
  punpckhwd %xmm5,%xmm3
  movdqa %xmm0,%xmm6
  punpcklwd %xmm3,%xmm0
  punpckhwd %xmm3,%xmm6
  punpcklwd %xmm6,%xmm0
  movdqa %xmm0,%xmm3
  psllw  $0x8,%xmm0
  psrlw  $0x8,%xmm3
  por    %xmm0,%xmm3
  movdqa %xmm4,%xmm0
  psrad  $0x10,%xmm0
  psrad  $0x18,%xmm4
  pslld  $0x8,%xmm0
  pand   %xmm2,%xmm0
  por    %xmm4,%xmm0
  movdqa %xmm3,%xmm4
  punpckhwd %xmm1,%xmm3
  punpcklwd %xmm1,%xmm4
  pslld  $0x10,%xmm3
  pslld  $0x10,%xmm4
  por    %xmm4,%xmm0
  movups %xmm0,0x20(%rdi)
  movdqa %xmm5,%xmm0
  psrad  $0x10,%xmm0
  pslld  $0x8,%xmm0
  pand   %xmm2,%xmm0
  movdqa %xmm5,%xmm2
  psrad  $0x18,%xmm2
  por    %xmm2,%xmm0
  por    %xmm3,%xmm0
  movups %xmm0,0x30(%rdi)
  mov    0x40(%rsi),%edx
  movzwl 0x40(%rsi),%eax
  mov    %edx,%ecx
  rol    $0x8,%ax
  shr    $0x8,%ecx
  shl    $0x10,%eax
  and    $0xff00,%ecx
  sar    $0x18,%edx
  or     %ecx,%eax
  or     %edx,%eax
  mov    %eax,0x40(%rdi)
  mov    0x44(%rsi),%edx
  movzwl 0x44(%rsi),%eax
  mov    %edx,%ecx
  sar    $0x18,%edx
  rol    $0x8,%ax
  shr    $0x8,%ecx
  and    $0xff00,%ecx
  shl    $0x10,%eax
  or     %ecx,%eax
  or     %edx,%eax
  mov    %eax,0x44(%rdi)
  mov    0x48(%rsi),%edx
  movzwl 0x48(%rsi),%eax
  mov    %edx,%ecx
  sar    $0x18,%edx
  rol    $0x8,%ax
  shr    $0x8,%ecx
  and    $0xff00,%ecx
  shl    $0x10,%eax
  or     %ecx,%eax
  or     %edx,%eax
  mov    %eax,0x48(%rdi)
  mov    0x4c(%rsi),%edx
  movzwl 0x4c(%rsi),%eax
  mov    %edx,%ecx
  sar    $0x18,%edx
  rol    $0x8,%ax
  shr    $0x8,%ecx
  shl    $0x10,%eax
  and    $0xff00,%ecx
  or     %ecx,%eax
  or     %edx,%eax
  mov    %eax,0x4c(%rdi)
  ret
L18:
  xor    %edx,%edx
  nopl   0x0(%rax,%rax,1)
L3:
  mov    (%rsi,%rdx,1),%edi
  movzwl (%rsi,%rdx,1),%ecx
  mov    %edi,%eax
  rol    $0x8,%cx
  shr    $0x8,%eax
  shl    $0x10,%ecx
  and    $0xff00,%eax
  sar    $0x18,%edi
  or     %ecx,%eax
  or     %edi,%eax
  mov    %eax,(%r8,%rdx,1)
  add    $0x4,%rdx
  cmp    $0x50,%rdx
  jne    L3
  ret
```

tool_calls: name: retrieve_data
arguments: tag: D9
data_type: byte[16]

tool: {"D9": [0xff,0xff,0x00,0x00,0xff,0xff,0x00,0x00,0xff,0xff,0x00,0x00,0xff,0xff,0x00,0x00]}

assistant: ```c
void flip80(void *dest_p, const void *src_p) {
  uint32_t *dest = dest_p;
  const uint32_t *src = src_p;
  int i;
  for (i = 0; i < 20; i++)
    dest[i] = (((uint32_t)(((((uint16_t)((src[i]) & 0xffff)) & 0xff) << 8) | (((uint16_t)((src[i]) & 0xffff)) >> 8)) << 16) | (uint32_t)(((((uint16_t)((src[i]) >> 16)) & 0xff) << 8) | (((uint16_t)((src[i]) >> 16)) >> 8)));
}
```