user: 请将以下的汇编代码转换成C语言代码:

```asm
<dist2>:
  endbr64
  mov    %ecx,%r11d
  or     %r8d,%r11d
  jne    L176
  mov    %r11d,%ecx
  movslq %edx,%r10
  test   %r9d,%r9d
  jle    L145
L41:
  mov    $0x0,%edx
L168:
  movzbl (%rdi,%rdx,1),%eax
  movzbl (%rsi,%rdx,1),%r8d
  sub    %r8d,%eax
  imul   %eax,%eax
  add    %eax,%ecx
  add    $0x1,%rdx
  cmp    $0x10,%rdx
  jne    L168
  add    %r10,%rdi
  add    %r10,%rsi
  add    $0x1,%r11d
  cmp    %r11d,%r9d
  jne    L41
L145:
  mov    %ecx,%eax
  ret
L176:
  test   %ecx,%ecx
  je     L142
  test   %r8d,%r8d
  jne    L142
  mov    $0x0,%ecx
  mov    $0x0,%r11d
  movslq %edx,%r10
  test   %r9d,%r9d
  jle    L145
L144:
  mov    $0x0,%edx
L6:
  movzbl (%rdi,%rdx,1),%r8d
  movzbl 0x1(%rdi,%rdx,1),%eax
  lea    0x1(%r8,%rax,1),%eax
  shr    %eax
  movzbl (%rsi,%rdx,1),%r8d
  sub    %r8d,%eax
  imul   %eax,%eax
  add    %eax,%ecx
  add    $0x1,%rdx
  cmp    $0x10,%rdx
  jne    L6
  add    %r10,%rdi
  add    %r10,%rsi
  add    $0x1,%r11d
  cmp    %r11d,%r9d
  jne    L144
  jmp    L145
L142:
  push   %rbp
  push   %rbx
  test   %ecx,%ecx
  jne    L171
  test   %r8d,%r8d
  je     L171
  movslq %edx,%r10
  lea    (%rdi,%r10,1),%r11
  test   %r9d,%r9d
  jle    L109
  mov    $0x0,%ebp
L202:
  mov    %rdi,%rbx
  mov    $0x0,%edx
L201:
  movzbl (%rbx,%rdx,1),%r8d
  movzbl (%r11,%rdx,1),%eax
  lea    0x1(%r8,%rax,1),%eax
  shr    %eax
  movzbl (%rsi,%rdx,1),%r8d
  sub    %r8d,%eax
  imul   %eax,%eax
  add    %eax,%ecx
  add    $0x1,%rdx
  cmp    $0x10,%rdx
  jne    L201
  add    %r10,%r11
  add    %r10,%rsi
  add    $0x1,%ebp
  add    %r10,%rdi
  cmp    %ebp,%r9d
  jne    L202
L140:
  mov    %ecx,%eax
  pop    %rbx
  pop    %rbp
  ret
L171:
  movslq %edx,%r11
  lea    (%rdi,%r11,1),%r8
  test   %r9d,%r9d
  jle    L206
  mov    %rdi,%rbx
  mov    $0x0,%ecx
  mov    $0x0,%edi
L25:
  mov    %rbx,%r10
  mov    $0x0,%edx
L21:
  movzbl (%r10,%rdx,1),%eax
  movzbl 0x1(%r10,%rdx,1),%ebp
  add    %ebp,%eax
  movzbl (%r8,%rdx,1),%ebp
  add    %ebp,%eax
  movzbl 0x1(%r8,%rdx,1),%ebp
  lea    0x2(%rax,%rbp,1),%eax
  shr    $0x2,%eax
  movzbl (%rsi,%rdx,1),%ebp
  sub    %ebp,%eax
  imul   %eax,%eax
  add    %eax,%ecx
  add    $0x1,%rdx
  cmp    $0x10,%rdx
  jne    L21
  add    %r11,%r8
  add    %r11,%rsi
  add    $0x1,%edi
  add    %r11,%rbx
  cmp    %edi,%r9d
  jne    L25
  jmp    L140
L109:
  mov    $0x0,%ecx
  jmp    L140
L206:
  mov    $0x0,%ecx
  jmp    L140
```

assistant: ```c
int dist2(blk1, blk2, lx, hx, hy, h)
unsigned char *blk1, *blk2;
int lx, hx, hy, h;
{
  unsigned char *p1, *p1a, *p2;
  int i, j;
  int s, v;
  s = 0;
  p1 = blk1;
  p2 = blk2;
  if (!hx && !hy)
    for (j = 0; j < h; j++) {
      for (i = 0; i < 16; i++) {
        v = p1[i] - p2[i];
        s += v * v;
      }
      p1 += lx;
      p2 += lx;
    }
  else if (hx && !hy)
    for (j = 0; j < h; j++) {
      for (i = 0; i < 16; i++) {
        v = ((unsigned int)(p1[i] + p1[i + 1] + 1) >> 1) - p2[i];
        s += v * v;
      }
      p1 += lx;
      p2 += lx;
    }
  else if (!hx && hy) {
    p1a = p1 + lx;
    for (j = 0; j < h; j++) {
      for (i = 0; i < 16; i++) {
        v = ((unsigned int)(p1[i] + p1a[i] + 1) >> 1) - p2[i];
        s += v * v;
      }
      p1 = p1a;
      p1a += lx;
      p2 += lx;
    }
  } else {
    p1a = p1 + lx;
    for (j = 0; j < h; j++) {
      for (i = 0; i < 16; i++) {
        v = ((unsigned int)(p1[i] + p1[i + 1] + p1a[i] + p1a[i + 1] + 2) >> 2) - p2[i];
        s += v * v;
      }
      p1 = p1a;
      p1a += lx;
      p2 += lx;
    }
  }
  return s;
}
```