user: 提供的汇编代码用C语言表示会是什么样子:

```asm
<transpose>:
  endbr64
  mov    %rdi,%rax
  mov    %rsi,%r8
  lea    0x4000(%rdi),%rdi
  xor    %r9d,%r9d
  jmp    L50
  nopl   0x0(%rax)
L58:
  movdqu (%rdx),%xmm0
  pshufd $0x55,%xmm0,%xmm1
  movd   %xmm0,(%rax)
  movd   %xmm1,0x100(%rax)
  movdqa %xmm0,%xmm1
  punpckhdq %xmm0,%xmm1
  pshufd $0xff,%xmm0,%xmm0
  movd   %xmm1,0x200(%rax)
  movd   %xmm0,0x300(%rax)
  movdqu 0x10(%rdx),%xmm0
  pshufd $0x55,%xmm0,%xmm1
  movd   %xmm0,0x400(%rax)
  movd   %xmm1,0x500(%rax)
  movdqa %xmm0,%xmm1
  punpckhdq %xmm0,%xmm1
  pshufd $0xff,%xmm0,%xmm0
  movd   %xmm1,0x600(%rax)
  movd   %xmm0,0x700(%rax)
  movdqu 0x20(%rdx),%xmm0
  pshufd $0x55,%xmm0,%xmm1
  movd   %xmm0,0x800(%rax)
  movd   %xmm1,0x900(%rax)
  movdqa %xmm0,%xmm1
  punpckhdq %xmm0,%xmm1
  pshufd $0xff,%xmm0,%xmm0
  movd   %xmm1,0xa00(%rax)
  movd   %xmm0,0xb00(%rax)
  movdqu 0x30(%rdx),%xmm0
  pshufd $0x55,%xmm0,%xmm1
  movd   %xmm0,0xc00(%rax)
  movd   %xmm1,0xd00(%rax)
  movdqa %xmm0,%xmm1
  punpckhdq %xmm0,%xmm1
  pshufd $0xff,%xmm0,%xmm0
  movd   %xmm1,0xe00(%rax)
  movd   %xmm0,0xf00(%rax)
  movdqu 0x40(%rdx),%xmm0
  pshufd $0x55,%xmm0,%xmm1
  movd   %xmm0,0x1000(%rax)
  movd   %xmm1,0x1100(%rax)
  movdqa %xmm0,%xmm1
  punpckhdq %xmm0,%xmm1
  pshufd $0xff,%xmm0,%xmm0
  movd   %xmm1,0x1200(%rax)
  movd   %xmm0,0x1300(%rax)
  movdqu 0x50(%rdx),%xmm0
  pshufd $0x55,%xmm0,%xmm1
  movd   %xmm0,0x1400(%rax)
  movd   %xmm1,0x1500(%rax)
  movdqa %xmm0,%xmm1
  punpckhdq %xmm0,%xmm1
  pshufd $0xff,%xmm0,%xmm0
  movd   %xmm1,0x1600(%rax)
  movd   %xmm0,0x1700(%rax)
  movdqu 0x60(%rdx),%xmm0
  pshufd $0x55,%xmm0,%xmm1
  movd   %xmm0,0x1800(%rax)
  movd   %xmm1,0x1900(%rax)
  movdqa %xmm0,%xmm1
  punpckhdq %xmm0,%xmm1
  pshufd $0xff,%xmm0,%xmm0
  movd   %xmm1,0x1a00(%rax)
  movd   %xmm0,0x1b00(%rax)
  movdqu 0x70(%rdx),%xmm0
  pshufd $0x55,%xmm0,%xmm1
  movd   %xmm0,0x1c00(%rax)
  movd   %xmm1,0x1d00(%rax)
  movdqa %xmm0,%xmm1
  punpckhdq %xmm0,%xmm1
  pshufd $0xff,%xmm0,%xmm0
  movd   %xmm1,0x1e00(%rax)
  movd   %xmm0,0x1f00(%rax)
  movdqu 0x80(%rdx),%xmm0
  pshufd $0x55,%xmm0,%xmm1
  movd   %xmm0,0x2000(%rax)
  movd   %xmm1,0x2100(%rax)
  movdqa %xmm0,%xmm1
  punpckhdq %xmm0,%xmm1
  pshufd $0xff,%xmm0,%xmm0
  movd   %xmm1,0x2200(%rax)
  movd   %xmm0,0x2300(%rax)
  movdqu 0x90(%rdx),%xmm0
  pshufd $0x55,%xmm0,%xmm1
  movd   %xmm0,0x2400(%rax)
  movd   %xmm1,0x2500(%rax)
  movdqa %xmm0,%xmm1
  punpckhdq %xmm0,%xmm1
  pshufd $0xff,%xmm0,%xmm0
  movd   %xmm1,0x2600(%rax)
  movd   %xmm0,0x2700(%rax)
  movdqu 0xa0(%rdx),%xmm0
  pshufd $0x55,%xmm0,%xmm1
  movd   %xmm0,0x2800(%rax)
  movd   %xmm1,0x2900(%rax)
  movdqa %xmm0,%xmm1
  punpckhdq %xmm0,%xmm1
  pshufd $0xff,%xmm0,%xmm0
  movd   %xmm1,0x2a00(%rax)
  movd   %xmm0,0x2b00(%rax)
  movdqu 0xb0(%rdx),%xmm0
  pshufd $0x55,%xmm0,%xmm1
  movd   %xmm0,0x2c00(%rax)
  movd   %xmm1,0x2d00(%rax)
  movdqa %xmm0,%xmm1
  punpckhdq %xmm0,%xmm1
  pshufd $0xff,%xmm0,%xmm0
  movd   %xmm1,0x2e00(%rax)
  movd   %xmm0,0x2f00(%rax)
  movdqu 0xc0(%rdx),%xmm0
  pshufd $0x55,%xmm0,%xmm1
  movd   %xmm0,0x3000(%rax)
  movd   %xmm1,0x3100(%rax)
  movdqa %xmm0,%xmm1
  punpckhdq %xmm0,%xmm1
  pshufd $0xff,%xmm0,%xmm0
  movd   %xmm1,0x3200(%rax)
  movd   %xmm0,0x3300(%rax)
  movdqu 0xd0(%rdx),%xmm0
  pshufd $0x55,%xmm0,%xmm1
  movd   %xmm0,0x3400(%rax)
  movd   %xmm1,0x3500(%rax)
  movdqa %xmm0,%xmm1
  punpckhdq %xmm0,%xmm1
  pshufd $0xff,%xmm0,%xmm0
  movd   %xmm1,0x3600(%rax)
  movd   %xmm0,0x3700(%rax)
  movdqu 0xe0(%rdx),%xmm0
  pshufd $0x55,%xmm0,%xmm1
  movd   %xmm0,0x3800(%rax)
  movd   %xmm1,0x3900(%rax)
  movdqa %xmm0,%xmm1
  punpckhdq %xmm0,%xmm1
  pshufd $0xff,%xmm0,%xmm0
  movd   %xmm1,0x3a00(%rax)
  movd   %xmm0,0x3b00(%rax)
  movdqu 0xf0(%rdx),%xmm0
  pshufd $0x55,%xmm0,%xmm1
  movd   %xmm0,0x3c00(%rax)
  movd   %xmm1,0x3d00(%rax)
  movdqa %xmm0,%xmm1
  punpckhdq %xmm0,%xmm1
  pshufd $0xff,%xmm0,%xmm0
  movd   %xmm1,0x3e00(%rax)
  movd   %xmm0,0x3f00(%rax)
L6:
  add    $0x1,%r9d
  add    $0x4,%rax
  add    $0x4,%rdi
  cmp    $0x40,%r9d
  je     L52
L50:
  mov    %r8,%rdx
  lea    -0xfc(%rdi),%rcx
  add    $0x100,%r8
  cmp    %rcx,%rdx
  jae    L58
  mov    %rax,%rcx
  cmp    %r8,%rax
  jae    L58
  nopl   0x0(%rax,%rax,1)
L11:
  mov    (%rdx),%esi
  add    $0x100,%rcx
  add    $0x4,%rdx
  mov    %esi,-0x100(%rcx)
  cmp    %rcx,%rdi
  jne    L11
  jmp    L6
L52:
  ret
```

assistant: ```c
void transpose(uint8_t *const dst, const uint8_t *const src) {
  for (int y = 0, y_off = 0; y < 64; y++, y_off += 64)
    for (int x = 0, x_off = 0; x < 64; x++, x_off += 64)
      dst[x_off + y] = src[y_off + x];
}
```