user: Demonstrate the C code that generates the assembly output below:

```asm
<swap_endian>:
  endbr64
  mov    %rdi,%rax
  mov    %rdx,%rcx
  cmp    $0x2,%rsi
  je     L243
  cmp    $0x4,%rsi
  je     L145
L43:
  ret
  nopl   0x0(%rax,%rax,1)
L145:
  test   %rdx,%rdx
  je     L43
  lea    -0x1(%rdx),%rdx
  cmp    $0xe,%rdx
  jbe    L312
  mov    %rcx,%rdi
  movdqa D16(%rip),%xmm2
  mov    %rax,%rdx
  xor    %esi,%esi
  shr    $0x4,%rdi
  nopw   0x0(%rax,%rax,1)
L103:
  movdqu (%rdx),%xmm1
  movdqu 0x10(%rdx),%xmm0
  movdqa %xmm2,%xmm6
  add    $0x1,%rsi
  movdqu 0x10(%rdx),%xmm3
  movdqu 0x20(%rdx),%xmm4
  add    $0x40,%rdx
  pand   %xmm2,%xmm0
  pand   %xmm2,%xmm1
  movdqu -0x10(%rdx),%xmm5
  packuswb %xmm0,%xmm1
  movdqu -0x40(%rdx),%xmm0
  psrlw  $0x8,%xmm3
  pand   %xmm2,%xmm4
  psrlw  $0x8,%xmm5
  psrlw  $0x8,%xmm0
  packuswb %xmm3,%xmm0
  movdqu -0x10(%rdx),%xmm3
  pand   %xmm2,%xmm3
  packuswb %xmm3,%xmm4
  movdqu -0x20(%rdx),%xmm3
  pand   %xmm4,%xmm6
  psrlw  $0x8,%xmm4
  psrlw  $0x8,%xmm3
  packuswb %xmm5,%xmm3
  movdqa %xmm2,%xmm5
  pand   %xmm1,%xmm5
  psrlw  $0x8,%xmm1
  packuswb %xmm6,%xmm5
  packuswb %xmm4,%xmm1
  movdqa %xmm2,%xmm6
  movdqa %xmm2,%xmm4
  pand   %xmm3,%xmm6
  pand   %xmm0,%xmm4
  psrlw  $0x8,%xmm3
  psrlw  $0x8,%xmm0
  packuswb %xmm6,%xmm4
  packuswb %xmm3,%xmm0
  movdqa %xmm0,%xmm3
  punpckhbw %xmm4,%xmm0
  punpcklbw %xmm4,%xmm3
  movdqa %xmm1,%xmm4
  punpckhbw %xmm5,%xmm1
  punpcklbw %xmm5,%xmm4
  movdqa %xmm3,%xmm5
  punpckhbw %xmm4,%xmm3
  punpcklbw %xmm4,%xmm5
  movups %xmm3,-0x30(%rdx)
  movdqa %xmm0,%xmm3
  punpckhbw %xmm1,%xmm0
  punpcklbw %xmm1,%xmm3
  movups %xmm5,-0x40(%rdx)
  movups %xmm3,-0x20(%rdx)
  movups %xmm0,-0x10(%rdx)
  cmp    %rsi,%rdi
  jne    L103
  mov    %rcx,%rdx
  and    $0xfffffffffffffff0,%rdx
  lea    (%rax,%rdx,4),%rax
  cmp    %rdx,%rcx
  je     L240
L340:
  movzbl (%rax),%esi
  movzbl 0x3(%rax),%edi
  rolw   $0x8,0x1(%rax)
  mov    %sil,0x3(%rax)
  lea    0x1(%rdx),%rsi
  mov    %dil,(%rax)
  cmp    %rsi,%rcx
  jbe    L43
  movzbl 0x4(%rax),%esi
  movzbl 0x7(%rax),%edi
  rolw   $0x8,0x5(%rax)
  mov    %sil,0x7(%rax)
  lea    0x2(%rdx),%rsi
  mov    %dil,0x4(%rax)
  cmp    %rsi,%rcx
  jbe    L43
  movzbl 0x8(%rax),%esi
  movzbl 0xb(%rax),%edi
  rolw   $0x8,0x9(%rax)
  mov    %sil,0xb(%rax)
  lea    0x3(%rdx),%rsi
  mov    %dil,0x8(%rax)
  cmp    %rsi,%rcx
  jbe    L43
  movzbl 0xc(%rax),%esi
  movzbl 0xf(%rax),%edi
  rolw   $0x8,0xd(%rax)
  mov    %sil,0xf(%rax)
  lea    0x4(%rdx),%rsi
  mov    %dil,0xc(%rax)
  cmp    %rsi,%rcx
  jbe    L43
  movzbl 0x10(%rax),%esi
  movzbl 0x13(%rax),%edi
  rolw   $0x8,0x11(%rax)
  mov    %sil,0x13(%rax)
  lea    0x5(%rdx),%rsi
  mov    %dil,0x10(%rax)
  cmp    %rsi,%rcx
  jbe    L43
  movzbl 0x14(%rax),%esi
  movzbl 0x17(%rax),%edi
  rolw   $0x8,0x15(%rax)
  mov    %sil,0x17(%rax)
  lea    0x6(%rdx),%rsi
  mov    %dil,0x14(%rax)
  cmp    %rsi,%rcx
  jbe    L43
  movzbl 0x18(%rax),%esi
  movzbl 0x1b(%rax),%edi
  rolw   $0x8,0x19(%rax)
  mov    %sil,0x1b(%rax)
  lea    0x7(%rdx),%rsi
  mov    %dil,0x18(%rax)
  cmp    %rsi,%rcx
  jbe    L43
  movzbl 0x1c(%rax),%esi
  movzbl 0x1f(%rax),%edi
  rolw   $0x8,0x1d(%rax)
  mov    %sil,0x1f(%rax)
  lea    0x8(%rdx),%rsi
  mov    %dil,0x1c(%rax)
  cmp    %rsi,%rcx
  jbe    L43
  movzbl 0x20(%rax),%esi
  movzbl 0x23(%rax),%edi
  rolw   $0x8,0x21(%rax)
  mov    %sil,0x23(%rax)
  lea    0x9(%rdx),%rsi
  mov    %dil,0x20(%rax)
  cmp    %rsi,%rcx
  jbe    L43
  movzbl 0x24(%rax),%esi
  movzbl 0x27(%rax),%edi
  rolw   $0x8,0x25(%rax)
  mov    %sil,0x27(%rax)
  lea    0xa(%rdx),%rsi
  mov    %dil,0x24(%rax)
  cmp    %rsi,%rcx
  jbe    L43
  movzbl 0x28(%rax),%esi
  movzbl 0x2b(%rax),%edi
  rolw   $0x8,0x29(%rax)
  mov    %sil,0x2b(%rax)
  lea    0xb(%rdx),%rsi
  mov    %dil,0x28(%rax)
  cmp    %rsi,%rcx
  jbe    L43
  movzbl 0x2c(%rax),%esi
  movzbl 0x2f(%rax),%edi
  rolw   $0x8,0x2d(%rax)
  mov    %sil,0x2f(%rax)
  lea    0xc(%rdx),%rsi
  mov    %dil,0x2c(%rax)
  cmp    %rsi,%rcx
  jbe    L43
  movzbl 0x30(%rax),%esi
  movzbl 0x33(%rax),%edi
  rolw   $0x8,0x31(%rax)
  mov    %sil,0x33(%rax)
  lea    0xd(%rdx),%rsi
  mov    %dil,0x30(%rax)
  cmp    %rsi,%rcx
  jbe    L43
  movzbl 0x34(%rax),%esi
  movzbl 0x37(%rax),%edi
  add    $0xe,%rdx
  rolw   $0x8,0x35(%rax)
  mov    %dil,0x34(%rax)
  mov    %sil,0x37(%rax)
  cmp    %rdx,%rcx
  jbe    L43
  movzbl 0x38(%rax),%edx
  movzbl 0x3b(%rax),%ecx
  rolw   $0x8,0x39(%rax)
  mov    %cl,0x38(%rax)
  mov    %dl,0x3b(%rax)
  ret
  nopw   0x0(%rax,%rax,1)
L243:
  test   %rdx,%rdx
  je     L43
  lea    -0x1(%rdx),%rdx
  cmp    $0xe,%rdx
  jbe    L144
  mov    %rcx,%rdi
  movdqa D16(%rip),%xmm2
  mov    %rax,%rdx
  xor    %esi,%esi
  shr    $0x4,%rdi
  nopl   0x0(%rax,%rax,1)
L374:
  movdqu (%rdx),%xmm1
  movdqu 0x10(%rdx),%xmm0
  add    $0x1,%rsi
  add    $0x20,%rdx
  movdqu -0x10(%rdx),%xmm3
  pand   %xmm2,%xmm0
  pand   %xmm2,%xmm1
  packuswb %xmm0,%xmm1
  movdqu -0x20(%rdx),%xmm0
  psrlw  $0x8,%xmm3
  psrlw  $0x8,%xmm0
  packuswb %xmm3,%xmm0
  movdqa %xmm0,%xmm3
  punpckhbw %xmm1,%xmm0
  punpcklbw %xmm1,%xmm3
  movups %xmm0,-0x10(%rdx)
  movups %xmm3,-0x20(%rdx)
  cmp    %rsi,%rdi
  jne    L374
  mov    %rcx,%rdx
  and    $0xfffffffffffffff0,%rdx
  lea    (%rax,%rdx,2),%rax
  cmp    %rdx,%rcx
  je     L193
L156:
  lea    0x1(%rdx),%rsi
  rolw   $0x8,(%rax)
  cmp    %rsi,%rcx
  jbe    L43
  lea    0x2(%rdx),%rsi
  rolw   $0x8,0x2(%rax)
  cmp    %rcx,%rsi
  jae    L43
  lea    0x3(%rdx),%rsi
  rolw   $0x8,0x4(%rax)
  cmp    %rsi,%rcx
  jbe    L43
  lea    0x4(%rdx),%rsi
  rolw   $0x8,0x6(%rax)
  cmp    %rsi,%rcx
  jbe    L43
  lea    0x5(%rdx),%rsi
  rolw   $0x8,0x8(%rax)
  cmp    %rsi,%rcx
  jbe    L43
  lea    0x6(%rdx),%rsi
  rolw   $0x8,0xa(%rax)
  cmp    %rsi,%rcx
  jbe    L43
  lea    0x7(%rdx),%rsi
  rolw   $0x8,0xc(%rax)
  cmp    %rsi,%rcx
  jbe    L43
  lea    0x8(%rdx),%rsi
  rolw   $0x8,0xe(%rax)
  cmp    %rsi,%rcx
  jbe    L43
  lea    0x9(%rdx),%rsi
  rolw   $0x8,0x10(%rax)
  cmp    %rsi,%rcx
  jbe    L43
  lea    0xa(%rdx),%rsi
  rolw   $0x8,0x12(%rax)
  cmp    %rsi,%rcx
  jbe    L43
  lea    0xb(%rdx),%rsi
  rolw   $0x8,0x14(%rax)
  cmp    %rsi,%rcx
  jbe    L43
  lea    0xc(%rdx),%rsi
  rolw   $0x8,0x16(%rax)
  cmp    %rsi,%rcx
  jbe    L43
  lea    0xd(%rdx),%rsi
  rolw   $0x8,0x18(%rax)
  cmp    %rsi,%rcx
  jbe    L43
  add    $0xe,%rdx
  rolw   $0x8,0x1a(%rax)
  cmp    %rdx,%rcx
  jbe    L43
  rolw   $0x8,0x1c(%rax)
  ret
L144:
  xor    %edx,%edx
  jmp    L156
L312:
  xor    %edx,%edx
  jmp    L340
L193:
  ret
L240:
  ret
```

tool_calls: name: disassemble_data
arguments: data_tag: D16
data_type: byte[16]

tool: {"D16": [0xff,0x00,0xff,0x00,0xff,0x00,0xff,0x00,0xff,0x00,0xff,0x00,0xff,0x00,0xff,0x00]}

assistant: ```c
void swap_endian(void *buffer, size_t size, size_t count) {
  unsigned char *byte_buffer = (unsigned char *)buffer;
  size_t i;
  unsigned char temp;
  {
    if (size == 2) {
      for (i = 0; i < count; i++) {
        temp = byte_buffer[0];
        byte_buffer[0] = byte_buffer[1];
        byte_buffer[1] = temp;
        byte_buffer += size;
      }
    } else if (size == 4) {
      for (i = 0; i < count; i++) {
        temp = byte_buffer[0];
        byte_buffer[0] = byte_buffer[3];
        byte_buffer[3] = temp;
        temp = byte_buffer[1];
        byte_buffer[1] = byte_buffer[2];
        byte_buffer[2] = temp;
        byte_buffer += size;
      }
    }
  }
}
```