user: Translate the below assembly code into C programming language:

```asm
<xxtea_uint_decrypt>:
  endbr64
  lea    -0x1(%rsi),%r11d
  mov    %rdi,%r8
  test   %r11d,%r11d
  jle    L53
  mov    $0x34,%eax
  mov    %rdx,%rdi
  push   %r15
  cltd
  push   %r14
  idiv   %esi
  push   %r13
  push   %r12
  push   %rbp
  push   %rbx
  mov    %esi,%ebx
  add    $0x6,%eax
  imul   $0x9e3779b9,%eax,%ecx
  test   %ecx,%ecx
  je     L10
  movslq %r11d,%rdx
  mov    (%r8),%eax
  shl    $0x2,%rdx
  lea    0x4(%r8,%rdx,1),%rsi
  lea    (%r8,%rdx,1),%r12
  lea    -0x4(%rbx),%edx
  mov    %rsi,-0x10(%rsp)
  lea    -0x3(%rbx),%esi
  and    $0xfffffffe,%edx
  sub    %edx,%esi
  mov    %esi,-0x4(%rsp)
  nopl   0x0(%rax,%rax,1)
L48:
  mov    %ecx,%esi
  sar    $0x2,%esi
  cmp    $0x3,%ebx
  jle    L43
  mov    -0x10(%rsp),%rdx
  mov    %r12,%r9
  mov    -0x4(%rdx),%r10d
  mov    %r11d,%edx
L33:
  mov    %esi,%ebp
  mov    -0x4(%r9),%r13d
  lea    0x0(,%rax,4),%r15d
  sub    $0x8,%r9
  xor    %edx,%ebp
  and    $0x3,%ebp
  mov    (%rdi,%rbp,4),%r14d
  xor    %r13d,%r14d
  mov    %r14d,%ebp
  mov    %ecx,%r14d
  xor    %eax,%r14d
  sar    $0x3,%eax
  add    %r14d,%ebp
  mov    %r13d,%r14d
  sar    $0x5,%r14d
  xor    %r15d,%r14d
  mov    %r13d,%r15d
  shl    $0x4,%r15d
  xor    %r15d,%eax
  add    %r14d,%eax
  xor    %eax,%ebp
  mov    %r10d,%eax
  mov    (%r9),%r10d
  sub    %ebp,%eax
  lea    -0x1(%rdx),%ebp
  sub    $0x2,%edx
  xor    %esi,%ebp
  mov    %eax,0x8(%r9)
  mov    %eax,%r15d
  and    $0x3,%ebp
  sar    $0x3,%r15d
  mov    (%rdi,%rbp,4),%r14d
  xor    %r10d,%r14d
  mov    %r14d,%ebp
  mov    %eax,%r14d
  shl    $0x2,%eax
  xor    %ecx,%r14d
  add    %r14d,%ebp
  mov    %r10d,%r14d
  shl    $0x4,%r14d
  xor    %r15d,%r14d
  mov    %r10d,%r15d
  sar    $0x5,%r15d
  xor    %r15d,%eax
  add    %eax,%r14d
  mov    %r13d,%eax
  xor    %r14d,%ebp
  sub    %ebp,%eax
  mov    %eax,0x4(%r9)
  cmp    %edx,-0x4(%rsp)
  jne    L33
L24:
  movslq %edx,%rdx
  nop
L27:
  mov    %esi,%r9d
  mov    -0x4(%r8,%rdx,4),%r10d
  mov    %ecx,%r13d
  xor    %edx,%r9d
  xor    %eax,%r13d
  and    $0x3,%r9d
  mov    (%rdi,%r9,4),%r15d
  mov    %r10d,%r9d
  shl    $0x4,%r9d
  xor    %r10d,%r15d
  sar    $0x5,%r10d
  lea    (%r15,%r13,1),%ebp
  mov    %eax,%r13d
  shl    $0x2,%eax
  sar    $0x3,%r13d
  xor    %r10d,%eax
  xor    %r13d,%r9d
  add    %r9d,%eax
  mov    %ebp,%r9d
  xor    %eax,%r9d
  mov    (%r8,%rdx,4),%eax
  sub    %r9d,%eax
  mov    %eax,(%r8,%rdx,4)
  sub    $0x1,%rdx
  test   %edx,%edx
  jne    L27
  mov    (%r12),%edx
  lea    0x0(,%rax,4),%r10d
  and    $0x3,%esi
  mov    %edx,%r9d
  mov    %edx,%ebp
  xor    (%rdi,%rsi,4),%edx
  sar    $0x5,%r9d
  shl    $0x4,%ebp
  xor    %r10d,%r9d
  mov    %eax,%r10d
  xor    %ecx,%eax
  sar    $0x3,%r10d
  add    %edx,%eax
  xor    %ebp,%r10d
  add    %r10d,%r9d
  mov    %r9d,%edx
  xor    %eax,%edx
  mov    (%r8),%eax
  sub    %edx,%eax
  mov    %eax,(%r8)
  add    $0x61c88647,%ecx
  jne    L48
L10:
  pop    %rbx
  mov    %r8,%rax
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  ret
L43:
  mov    %r11d,%edx
  jmp    L24
L53:
  mov    %rdi,%rax
  ret
```

assistant: ```c
uint32_t *xxtea_uint_decrypt(uint32_t *data, size_t len, uint32_t *key) {
  uint32_t n = (uint32_t)len - 1;
  uint32_t z, y = data[0], p, q = 6 + 52 / (n + 1), sum = q * 0x9e3779b9, e;
  if (n < 1)
    return data;
  while (sum != 0) {
    e = sum >> 2 & 3;
    for (p = n; p > 0; p--) {
      z = data[p - 1];
      y = data[p] -= (((z >> 5) ^ (y << 2)) + ((y >> 3) ^ (z << 4))) ^ ((sum ^ y) + (key[(p & 3) ^ e] ^ z));
    }
    z = data[n];
    y = data[0] -= (((z >> 5) ^ (y << 2)) + ((y >> 3) ^ (z << 4))) ^ ((sum ^ y) + (key[(p & 3) ^ e] ^ z));
    sum -= 0x9e3779b9;
  }
  return data;
}
```