user: 这段汇编代码用C语言表示是什么样的？

```asm
<rgb32to16_C>:
  endbr64
  mov    %edx,%edx
  mov    %rdi,%rcx
  mov    %rsi,%rdi
  shl    $0x2,%rdx
  lea    (%rcx,%rdx,1),%r8
  cmp    %r8,%rcx
  jae    L7
  sub    $0x1,%rdx
  mov    %rcx,%rax
  mov    %rdx,%rsi
  mov    %rdx,%r9
  and    $0xfffffffffffffff0,%rsi
  shr    $0x4,%r9
  lea    0x4(%rcx,%rsi,1),%rsi
  lea    0x4(%rdi,%r9,4),%r9
  cmp    %rsi,%rdi
  setae  %sil
  cmp    %r9,%rcx
  setae  %r9b
  or     %r9b,%sil
  je     L62
  cmp    $0x3f,%rdx
  jbe    L62
  mov    %rdx,%r9
  and    $0xffffffffffffffc0,%rdx
  mov    %rdi,%rsi
  movdqa D14(%rip),%xmm5
  movdqa D21(%rip),%xmm4
  movdqa D0(%rip),%xmm3
  shr    $0x6,%r9
  add    %rcx,%rdx
  cs nopw 0x0(%rax,%rax,1)
L56:
  movdqu (%rax),%xmm0
  movdqu 0x10(%rax),%xmm6
  add    $0x40,%rax
  add    $0x10,%rsi
  movdqu -0x20(%rax),%xmm1
  movdqu -0x10(%rax),%xmm7
  shufps $0x88,%xmm6,%xmm0
  shufps $0x88,%xmm7,%xmm1
  shufps $0x88,%xmm1,%xmm0
  movdqa %xmm0,%xmm1
  movdqa %xmm0,%xmm2
  psrad  $0x3,%xmm1
  psrad  $0x5,%xmm2
  pand   %xmm5,%xmm1
  psrad  $0x8,%xmm0
  pand   %xmm4,%xmm2
  por    %xmm2,%xmm1
  pand   %xmm3,%xmm0
  paddd  %xmm1,%xmm0
  movups %xmm0,-0x10(%rsi)
  cmp    %rdx,%rax
  jne    L56
  mov    %r9,%rdx
  shl    $0x4,%r9
  shl    $0x6,%rdx
  lea    (%rdi,%r9,1),%rax
  add    %rcx,%rdx
  mov    (%rdx),%esi
  mov    %esi,%ecx
  mov    %esi,%edi
  sar    $0x8,%esi
  sar    $0x5,%ecx
  sar    $0x3,%edi
  and    $0xf800,%esi
  and    $0x7e0,%ecx
  and    $0x1f,%edi
  or     %edi,%ecx
  add    %esi,%ecx
  mov    %ecx,(%rax)
  lea    0x10(%rdx),%rcx
  cmp    %rcx,%r8
  jbe    L7
  mov    0x10(%rdx),%esi
  mov    %esi,%ecx
  mov    %esi,%edi
  sar    $0x8,%esi
  sar    $0x3,%ecx
  sar    $0x5,%edi
  and    $0xf800,%esi
  and    $0x1f,%ecx
  and    $0x7e0,%edi
  or     %edi,%ecx
  add    %esi,%ecx
  mov    %ecx,0x4(%rax)
  lea    0x20(%rdx),%rcx
  cmp    %rcx,%r8
  jbe    L7
  mov    0x20(%rdx),%esi
  mov    %esi,%ecx
  mov    %esi,%edi
  sar    $0x8,%esi
  sar    $0x3,%ecx
  sar    $0x5,%edi
  and    $0xf800,%esi
  and    $0x1f,%ecx
  and    $0x7e0,%edi
  or     %edi,%ecx
  add    %esi,%ecx
  mov    %ecx,0x8(%rax)
  lea    0x30(%rdx),%rcx
  cmp    %rcx,%r8
  jbe    L7
  mov    0x30(%rdx),%ecx
  mov    %ecx,%edx
  mov    %ecx,%esi
  sar    $0x8,%ecx
  sar    $0x3,%edx
  sar    $0x5,%esi
  and    $0xf800,%ecx
  and    $0x1f,%edx
  and    $0x7e0,%esi
  or     %esi,%edx
  add    %ecx,%edx
  mov    %edx,0xc(%rax)
  ret
  nopw   0x0(%rax,%rax,1)
L62:
  mov    (%rcx),%edx
  add    $0x4,%rdi
  add    $0x10,%rcx
  mov    %edx,%eax
  mov    %edx,%esi
  sar    $0x8,%edx
  sar    $0x3,%eax
  sar    $0x5,%esi
  and    $0xf800,%edx
  and    $0x1f,%eax
  and    $0x7e0,%esi
  or     %esi,%eax
  add    %edx,%eax
  mov    %eax,-0x4(%rdi)
  cmp    %rcx,%r8
  ja     L62
L7:
  ret
```

tool_calls: name: disassemble_data
arguments: data_tag: D14
data_type: byte[16]
name: disassemble_data
arguments: data_tag: D21
data_type: byte[16]
name: disassemble_data
arguments: data_tag: D0
data_type: byte[16]

tool: {"D14": [0x1f,0x00,0x00,0x00,0x1f,0x00,0x00,0x00,0x1f,0x00,0x00,0x00,0x1f,0x00,0x00,0x00]}

tool: {"D21": [0xe0,0x07,0x00,0x00,0xe0,0x07,0x00,0x00,0xe0,0x07,0x00,0x00,0xe0,0x07,0x00,0x00]}

tool: {"D0": [0x00,0xf8,0x00,0x00,0x00,0xf8,0x00,0x00,0x00,0xf8,0x00,0x00,0x00,0xf8,0x00,0x00]}

assistant: ```c
void rgb32to16_C(const uint8_t *src, uint8_t *dst, unsigned src_size) {
  const uint8_t *s = src;
  const uint8_t *end;
  uint16_t *d = (uint16_t *)dst;
  end = s + src_size;
  while (s < end) {
    const int src = *s;
    s += 4;
    *d++ = ((src & 0xFF) >> 3) + ((src & 0xFC00) >> 5) + ((src & 0xF80000) >> 8);
  }
}
```