user: What is the c source code of the assembly code below?

```asm
<_rp>:
  endbr64
  push   %r15
  mov    %rdx,%r15
  push   %r14
  mov    %esi,%r14d
  push   %r13
  push   %r12
  push   %rbp
  push   %rbx
  sub    $0xb8,%rsp
  mov    %rdi,0x38(%rsp)
  cmp    %ecx,%esi
  je     L12
  mov    %ecx,%r12d
  mov    %rdi,%rcx
  movslq %r12d,%rax
  shl    $0x2,%rax
  lea    (%rdx,%rax,1),%rdx
  lea    (%rdi,%rax,1),%rsi
  movl   $0x1,(%rdx)
  mov    (%rsi),%r11d
  mov    %rdx,0x98(%rsp)
  mov    %rsi,0xa8(%rsp)
  test   %r11d,%r11d
  jle    L3
  lea    0x1(%r12),%esi
  add    $0x4,%rax
  mov    %esi,0x6c(%rsp)
  lea    (%r15,%rax,1),%rsi
  add    %rdi,%rax
  mov    %rax,0x90(%rsp)
  lea    0x2(%r12),%eax
  mov    %eax,0xa0(%rsp)
  cltq
  shl    $0x2,%rax
  mov    %rsi,0x70(%rsp)
  lea    (%r15,%rax,1),%rsi
  add    %rdi,%rax
  mov    %rax,0x88(%rsp)
  lea    0x3(%r12),%eax
  mov    %eax,0xa4(%rsp)
  cltq
  shl    $0x2,%rax
  mov    %rsi,0x78(%rsp)
  lea    (%r15,%rax,1),%rsi
  add    %rdi,%rax
  mov    %rax,0x58(%rsp)
  lea    0x4(%r12),%eax
  mov    %eax,0x80(%rsp)
  cltq
  shl    $0x2,%rax
  mov    %rsi,0x40(%rsp)
  lea    (%r15,%rax,1),%rdi
  add    %rcx,%rax
  mov    %rax,0x20(%rsp)
  lea    0x5(%r12),%eax
  mov    %eax,0x60(%rsp)
  cltq
  shl    $0x2,%rax
  lea    (%r15,%rax,1),%rbx
  add    %rcx,%rax
  mov    %rax,0x8(%rsp)
  lea    0x6(%r12),%eax
  mov    %eax,0x18(%rsp)
  cltq
  shl    $0x2,%rax
  lea    (%r15,%rax,1),%rbp
  add    %rcx,%rax
  mov    %rax,(%rsp)
  lea    0x7(%r12),%eax
  mov    %eax,0x1c(%rsp)
  cltq
  shl    $0x2,%rax
  lea    (%r15,%rax,1),%rdx
  add    %rcx,%rax
  mov    %rax,0x50(%rsp)
  lea    0x8(%r12),%eax
  add    $0x9,%r12d
  mov    %eax,0x84(%rsp)
  cltq
  shl    $0x2,%rax
  mov    %rdx,0x48(%rsp)
  lea    (%r15,%rax,1),%r13
  add    %rcx,%rax
  mov    %r12d,0x68(%rsp)
  mov    %rdi,%r12
  mov    %rax,0x10(%rsp)
L235:
  cmp    %r14d,0x6c(%rsp)
  je     L122
  mov    0x70(%rsp),%rax
  movl   $0x1,(%rax)
  mov    0x90(%rsp),%rax
  mov    (%rax),%r10d
  test   %r10d,%r10d
  jle    L194
L177:
  cmp    0xa0(%rsp),%r14d
  je     L274
  mov    0x78(%rsp),%rax
  movl   $0x1,(%rax)
  mov    0x88(%rsp),%rax
  mov    (%rax),%r9d
  test   %r9d,%r9d
  jle    L229
L92:
  cmp    0xa4(%rsp),%r14d
  je     L269
  mov    0x40(%rsp),%rax
  movl   $0x1,(%rax)
  mov    0x58(%rsp),%rax
  mov    (%rax),%r8d
  test   %r8d,%r8d
  jle    L157
L266:
  cmp    0x80(%rsp),%r14d
  je     L341
  mov    0x20(%rsp),%rax
  movl   $0x1,(%r12)
  mov    (%rax),%edi
  test   %edi,%edi
  jle    L313
L2:
  cmp    0x60(%rsp),%r14d
  je     L327
  mov    0x8(%rsp),%rax
  movl   $0x1,(%rbx)
  mov    (%rax),%esi
  test   %esi,%esi
  jle    L217
  mov    %r15,%rax
  mov    %r12,%r15
  mov    %r14d,%r12d
  mov    %rax,%r14
L95:
  cmp    0x18(%rsp),%r12d
  je     L338
  mov    (%rsp),%rax
  movl   $0x1,0x0(%rbp)
  mov    (%rax),%ecx
  test   %ecx,%ecx
  jle    L258
  mov    %r15,0x28(%rsp)
  mov    0x38(%rsp),%r15
  mov    %rbx,0x30(%rsp)
  mov    0x68(%rsp),%ebx
L62:
  cmp    0x1c(%rsp),%r12d
  je     L196
  mov    0x48(%rsp),%rax
  movl   $0x1,(%rax)
  mov    0x50(%rsp),%rax
  mov    (%rax),%edx
  test   %edx,%edx
  jle    L303
L4:
  cmp    0x84(%rsp),%r12d
  je     L55
  mov    0x10(%rsp),%rax
  movl   $0x1,0x0(%r13)
  mov    (%rax),%eax
  test   %eax,%eax
  jle    L200
L298:
  mov    %r14,%rdx
  mov    %ebx,%ecx
  mov    %r12d,%esi
  mov    %r15,%rdi
  call   <_rp>
  mov    0x0(%r13),%eax
  mov    0x10(%rsp),%rdx
  add    $0x1,%eax
  mov    %eax,0x0(%r13)
  cmp    (%rdx),%eax
  jle    L298
L200:
  mov    0x48(%rsp),%rdx
  mov    (%rdx),%eax
  mov    %eax,0x64(%rsp)
  add    $0x1,%eax
  mov    %eax,(%rdx)
  mov    0x50(%rsp),%rdx
  cmp    (%rdx),%eax
  jle    L4
L303:
  mov    0x0(%rbp),%eax
  mov    (%rsp),%rsi
  add    $0x1,%eax
  mov    %eax,0x0(%rbp)
  cmp    (%rsi),%eax
  jle    L62
  mov    0x28(%rsp),%r15
  mov    0x30(%rsp),%rbx
L258:
  mov    (%rbx),%eax
  mov    0x8(%rsp),%rcx
  add    $0x1,%eax
  mov    %eax,(%rbx)
  cmp    (%rcx),%eax
  jle    L95
  mov    %r14,%rax
  mov    %r12d,%r14d
  mov    %r15,%r12
  mov    %rax,%r15
L217:
  mov    (%r12),%eax
  mov    0x20(%rsp),%rdi
  add    $0x1,%eax
  mov    %eax,(%r12)
  cmp    (%rdi),%eax
  jle    L2
L313:
  mov    0x40(%rsp),%rdi
  mov    0x58(%rsp),%rsi
  mov    (%rdi),%eax
  mov    %eax,0x28(%rsp)
  add    $0x1,%eax
  mov    %eax,(%rdi)
  cmp    (%rsi),%eax
  jle    L266
L157:
  mov    0x78(%rsp),%rcx
  mov    (%rcx),%eax
  mov    %eax,0x28(%rsp)
  add    $0x1,%eax
  mov    %eax,(%rcx)
  mov    0x88(%rsp),%rcx
  cmp    (%rcx),%eax
  jle    L92
L229:
  mov    0x70(%rsp),%rdi
  mov    0x90(%rsp),%rcx
  mov    (%rdi),%eax
  mov    %eax,0x28(%rsp)
  add    $0x1,%eax
  mov    %eax,(%rdi)
  cmp    (%rcx),%eax
  jle    L177
L194:
  mov    0x98(%rsp),%rdx
  mov    0xa8(%rsp),%rsi
  mov    (%rdx),%eax
  mov    %eax,0x28(%rsp)
  add    $0x1,%eax
  mov    %eax,(%rdx)
  cmp    (%rsi),%eax
  jle    L235
L3:
  add    $0xb8,%rsp
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  ret
L196:
  mov    %r12d,%esi
  mov    %r14,%rdi
  call   <parr@plt>
  jmp    L303
L338:
  mov    %r12d,%esi
  mov    %r14,%rdi
  call   <parr@plt>
  jmp    L258
  nopl   0x0(%rax,%rax,1)
L55:
  mov    %r12d,%esi
  mov    %r14,%rdi
  call   <parr@plt>
  jmp    L200
L327:
  mov    %r14d,%esi
  mov    %r15,%rdi
  call   <parr@plt>
  jmp    L217
L341:
  mov    %r14d,%esi
  mov    %r15,%rdi
  call   <parr@plt>
  jmp    L313
L269:
  mov    %r14d,%esi
  mov    %r15,%rdi
  call   <parr@plt>
  jmp    L157
L274:
  mov    %r14d,%esi
  mov    %r15,%rdi
  call   <parr@plt>
  jmp    L229
L122:
  mov    0x6c(%rsp),%esi
  mov    %r15,%rdi
  call   <parr@plt>
  jmp    L194
L12:
  add    $0xb8,%rsp
  mov    %rdx,%rdi
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  jmp    1050 <parr@plt>
```

assistant: ```c
void _rp(int *arr, int len, int *cache, int level) {
  if (len == level) {
    parr(cache, len);
    return;
  }
  for (cache[level] = 1; cache[level] <= arr[level]; ++cache[level])
    _rp(arr, len, cache, level + 1);
}
```