user: 这段汇编代码用C语言表示是什么样的:

```asm
<FillImage420_>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  sub    $0x30,%rsp
  mov    %rdi,-0x28(%rbp)
  mov    %esi,-0x2c(%rbp)
  mov    %edx,-0x30(%rbp)
  mov    -0x28(%rbp),%rax
  mov    %rax,-0x18(%rbp)
  mov    -0x2c(%rbp),%eax
  imul   -0x30(%rbp),%eax
  movslq %eax,%rdx
  mov    -0x28(%rbp),%rax
  add    %rdx,%rax
  mov    %rax,-0x10(%rbp)
  mov    -0x2c(%rbp),%eax
  imul   -0x30(%rbp),%eax
  mov    %eax,%edx
  mov    %edx,%eax
  shl    $0x2,%eax
  add    %edx,%eax
  lea    0x3(%rax),%edx
  test   %eax,%eax
  cmovs  %edx,%eax
  sar    $0x2,%eax
  movslq %eax,%rdx
  mov    -0x28(%rbp),%rax
  add    %rdx,%rax
  mov    %rax,-0x8(%rbp)
  movl   $0x0,-0x1c(%rbp)
  jmp    L30
L3:
  mov    -0x2c(%rbp),%eax
  lea    (%rax,%rax,1),%edx
  mov    -0x18(%rbp),%rax
  mov    $0x52,%esi
  mov    %rax,%rdi
  call   <memset@plt>
  mov    -0x2c(%rbp),%eax
  mov    %eax,%edx
  shr    $0x1f,%edx
  add    %edx,%eax
  sar    %eax
  mov    %eax,%edx
  mov    -0x10(%rbp),%rax
  mov    $0x5b,%esi
  mov    %rax,%rdi
  call   <memset@plt>
  mov    -0x2c(%rbp),%eax
  mov    %eax,%edx
  shr    $0x1f,%edx
  add    %edx,%eax
  sar    %eax
  mov    %eax,%edx
  mov    -0x8(%rbp),%rax
  mov    $0xf0,%esi
  mov    %rax,%rdi
  call   <memset@plt>
  mov    -0x2c(%rbp),%eax
  add    %eax,%eax
  cltq
  shl    $0x2,%rax
  add    %rax,-0x18(%rbp)
  mov    -0x2c(%rbp),%eax
  mov    %eax,%edx
  shr    $0x1f,%edx
  add    %edx,%eax
  sar    %eax
  cltq
  shl    $0x2,%rax
  add    %rax,-0x10(%rbp)
  mov    -0x2c(%rbp),%eax
  mov    %eax,%edx
  shr    $0x1f,%edx
  add    %edx,%eax
  sar    %eax
  cltq
  shl    $0x2,%rax
  add    %rax,-0x8(%rbp)
  addl   $0x1,-0x1c(%rbp)
L30:
  mov    -0x30(%rbp),%eax
  lea    0x7(%rax),%edx
  test   %eax,%eax
  cmovs  %edx,%eax
  sar    $0x3,%eax
  cmp    %eax,-0x1c(%rbp)
  jl     L3
  movl   $0x0,-0x1c(%rbp)
  jmp    L27
L45:
  mov    -0x2c(%rbp),%eax
  lea    (%rax,%rax,1),%edx
  mov    -0x18(%rbp),%rax
  mov    $0x91,%esi
  mov    %rax,%rdi
  call   <memset@plt>
  mov    -0x2c(%rbp),%eax
  mov    %eax,%edx
  shr    $0x1f,%edx
  add    %edx,%eax
  sar    %eax
  mov    %eax,%edx
  mov    -0x10(%rbp),%rax
  mov    $0x37,%esi
  mov    %rax,%rdi
  call   <memset@plt>
  mov    -0x2c(%rbp),%eax
  mov    %eax,%edx
  shr    $0x1f,%edx
  add    %edx,%eax
  sar    %eax
  mov    %eax,%edx
  mov    -0x8(%rbp),%rax
  mov    $0x23,%esi
  mov    %rax,%rdi
  call   <memset@plt>
  mov    -0x2c(%rbp),%eax
  add    %eax,%eax
  cltq
  shl    $0x2,%rax
  add    %rax,-0x18(%rbp)
  mov    -0x2c(%rbp),%eax
  mov    %eax,%edx
  shr    $0x1f,%edx
  add    %edx,%eax
  sar    %eax
  cltq
  shl    $0x2,%rax
  add    %rax,-0x10(%rbp)
  mov    -0x2c(%rbp),%eax
  mov    %eax,%edx
  shr    $0x1f,%edx
  add    %edx,%eax
  sar    %eax
  cltq
  shl    $0x2,%rax
  add    %rax,-0x8(%rbp)
  addl   $0x1,-0x1c(%rbp)
L27:
  mov    -0x30(%rbp),%eax
  lea    0x7(%rax),%edx
  test   %eax,%eax
  cmovs  %edx,%eax
  sar    $0x3,%eax
  cmp    %eax,-0x1c(%rbp)
  jl     L45
  movl   $0x0,-0x1c(%rbp)
  jmp    L51
L69:
  mov    -0x2c(%rbp),%eax
  lea    (%rax,%rax,1),%edx
  mov    -0x18(%rbp),%rax
  mov    $0x29,%esi
  mov    %rax,%rdi
  call   <memset@plt>
  mov    -0x2c(%rbp),%eax
  mov    %eax,%edx
  shr    $0x1f,%edx
  add    %edx,%eax
  sar    %eax
  mov    %eax,%edx
  mov    -0x10(%rbp),%rax
  mov    $0xf0,%esi
  mov    %rax,%rdi
  call   <memset@plt>
  mov    -0x2c(%rbp),%eax
  mov    %eax,%edx
  shr    $0x1f,%edx
  add    %edx,%eax
  sar    %eax
  mov    %eax,%edx
  mov    -0x8(%rbp),%rax
  mov    $0x6f,%esi
  mov    %rax,%rdi
  call   <memset@plt>
  mov    -0x2c(%rbp),%eax
  add    %eax,%eax
  cltq
  shl    $0x2,%rax
  add    %rax,-0x18(%rbp)
  mov    -0x2c(%rbp),%eax
  mov    %eax,%edx
  shr    $0x1f,%edx
  add    %edx,%eax
  sar    %eax
  cltq
  shl    $0x2,%rax
  add    %rax,-0x10(%rbp)
  mov    -0x2c(%rbp),%eax
  mov    %eax,%edx
  shr    $0x1f,%edx
  add    %edx,%eax
  sar    %eax
  cltq
  shl    $0x2,%rax
  add    %rax,-0x8(%rbp)
  addl   $0x1,-0x1c(%rbp)
L51:
  mov    -0x30(%rbp),%eax
  lea    0x7(%rax),%edx
  test   %eax,%eax
  cmovs  %edx,%eax
  sar    $0x3,%eax
  cmp    %eax,-0x1c(%rbp)
  jl     L69
  movl   $0x0,-0x1c(%rbp)
  jmp    L57
L49:
  mov    -0x2c(%rbp),%eax
  lea    (%rax,%rax,1),%edx
  mov    -0x18(%rbp),%rax
  mov    $0xeb,%esi
  mov    %rax,%rdi
  call   <memset@plt>
  mov    -0x2c(%rbp),%eax
  mov    %eax,%edx
  shr    $0x1f,%edx
  add    %edx,%eax
  sar    %eax
  mov    %eax,%edx
  mov    -0x10(%rbp),%rax
  mov    $0x80,%esi
  mov    %rax,%rdi
  call   <memset@plt>
  mov    -0x2c(%rbp),%eax
  mov    %eax,%edx
  shr    $0x1f,%edx
  add    %edx,%eax
  sar    %eax
  mov    %eax,%edx
  mov    -0x8(%rbp),%rax
  mov    $0x80,%esi
  mov    %rax,%rdi
  call   <memset@plt>
  mov    -0x2c(%rbp),%eax
  add    %eax,%eax
  cltq
  shl    $0x2,%rax
  add    %rax,-0x18(%rbp)
  mov    -0x2c(%rbp),%eax
  mov    %eax,%edx
  shr    $0x1f,%edx
  add    %edx,%eax
  sar    %eax
  cltq
  shl    $0x2,%rax
  add    %rax,-0x10(%rbp)
  mov    -0x2c(%rbp),%eax
  mov    %eax,%edx
  shr    $0x1f,%edx
  add    %edx,%eax
  sar    %eax
  cltq
  shl    $0x2,%rax
  add    %rax,-0x8(%rbp)
  addl   $0x1,-0x1c(%rbp)
L57:
  mov    -0x30(%rbp),%eax
  lea    0x7(%rax),%edx
  test   %eax,%eax
  cmovs  %edx,%eax
  sar    $0x3,%eax
  cmp    %eax,-0x1c(%rbp)
  jl     L49
  nop
  nop
  leave
  ret
```

assistant: ```c
void FillImage420_(unsigned char *image, int width, int height) {
  uint8_t *pY = (uint8_t *)(image);
  uint8_t *pU = (uint8_t *)(image + width * height);
  uint8_t *pV = (uint8_t *)(image + width * height * 5 / 4);
  int y, x;
  for (y = 0; y < height / 8; y++) {
    memset(pY, 0x52, width * 2);
    memset(pU, 0x5b, width / 2);
    memset(pV, 0xf0, width / 2);
    pY += width * 2;
    pU += width / 2;
    pV += width / 2;
  }
  for (y = 0; y < height / 8; y++) {
    memset(pY, 0x91, width * 2);
    memset(pU, 0x37, width / 2);
    memset(pV, 0x23, width / 2);
    pY += width * 2;
    pU += width / 2;
    pV += width / 2;
  }
  for (y = 0; y < height / 8; y++) {
    memset(pY, 0x29, width * 2);
    memset(pU, 0xf0, width / 2);
    memset(pV, 0x6f, width / 2);
    pY += width * 2;
    pU += width / 2;
    pV += width / 2;
  }
  for (y = 0; y < height / 8; y++) {
    memset(pY, 0xeb, width * 2);
    memset(pU, 0x80, width / 2);
    memset(pV, 0x80, width / 2);
    pY += width * 2;
    pU += width / 2;
    pV += width / 2;
  }
}
```