user: 下面的汇编指令对应的C源代码是什么:

```asm
<get_best_register_a_value_for_crazy>:
  endbr64
  push   %r15
  push   %r14
  push   %r13
  push   %r12
  push   %rbp
  mov    %edx,%ebp
  push   %rbx
  sub    $0x38,%rsp
  mov    D0(%rip),%rax
  mov    %edi,0x24(%rsp)
  mov    %esi,0x28(%rsp)
  mov    (%rax),%r14d
  mov    %rcx,0x18(%rsp)
  mov    %r8,0x8(%rsp)
  call   <get_register_a_value_for_crazy@plt>
  mov    %eax,%r15d
  cmp    $0xffff,%eax
  je     L148
  test   %eax,%eax
  je     L121
  cmp    $0x7354,%eax
  je     L121
  lea    -0xe6a6(%rax),%eax
  mov    $0xa,%r13d
  mov    $0x7353,%r12d
  cmp    $0x2,%eax
  jbe    L121
  mov    %r15d,0x2c(%rsp)
  jmp    L52
  nopl   0x0(%rax,%rax,1)
L71:
  movl   $0x0,(%rcx)
  mov    %eax,%r14d
  mov    %ebx,0x2c(%rsp)
L99:
  cmp    %edi,%r14d
  jle    L142
  cmpq   $0x0,0x8(%rsp)
  je     L142
  mov    0x18(%rsp),%rax
  test   %rax,%rax
  je     L137
  mov    %r15d,(%rax)
L137:
  mov    0x8(%rsp),%rax
  mov    %ebx,0x2c(%rsp)
  mov    %edi,%r14d
  movl   $0x1,(%rax)
L142:
  mov    %ebp,%edi
  call   <rotate_right@plt>
  mov    %eax,%ebp
  test   %r12d,%r12d
  jle    L102
  mov    %r12d,%edi
  call   <rotate_right@plt>
  lea    -0x1(%rax),%r12d
L102:
  add    $0x1,%r13d
  cmp    $0x14,%r13d
  je     L115
L52:
  mov    0x28(%rsp),%esi
  mov    0x24(%rsp),%edi
  mov    %ebp,%edx
  lea    -0xa(%r13),%r15d
  call   <get_register_a_value_for_crazy@plt>
  mov    $0x7354,%edx
  mov    %ebp,%esi
  mov    %eax,%edi
  mov    %eax,%ebx
  call   <count_different_trits@plt>
  mov    %ebp,%esi
  mov    $0xe6a8,%edi
  mov    %eax,0x20(%rsp)
  call   <crazy@plt>
  mov    $0x7354,%edx
  mov    %ebx,%edi
  mov    %eax,%esi
  call   <count_different_trits@plt>
  mov    %r12d,%edx
  mov    %ebp,%esi
  mov    %ebx,%edi
  mov    %eax,0x14(%rsp)
  call   <count_different_trits@plt>
  mov    %ebp,%esi
  mov    $0xe6a8,%edi
  mov    %eax,0x10(%rsp)
  call   <crazy@plt>
  mov    %r12d,%edx
  mov    %ebx,%edi
  mov    %eax,%esi
  call   <count_different_trits@plt>
  mov    0x10(%rsp),%r11d
  mov    %r13d,%edx
  mov    0x20(%rsp),%r10d
  mov    %eax,%r8d
  mov    0x14(%rsp),%r9d
  mov    $0x6,%ecx
  test   %r11d,%r11d
  lea    (%r10,%r10,8),%eax
  cmove  %r15d,%edx
  test   %r8d,%r8d
  lea    (%r9,%r9,8),%r9d
  cmovne %r13d,%r15d
  lea    (%rdx,%rdx,2),%esi
  add    %esi,%eax
  lea    (%r15,%r15,2),%edi
  cmove  %ecx,%eax
  lea    0x2(%r9,%rdi,1),%edi
  cmp    %r14d,%eax
  jge    L99
  mov    0x18(%rsp),%rcx
  test   %rcx,%rcx
  je     L62
  mov    %edx,(%rcx)
L62:
  mov    0x8(%rsp),%rcx
  test   %rcx,%rcx
  jne    L71
  mov    %ebx,0x2c(%rsp)
  mov    %eax,%r14d
  jmp    L142
  xchg   %ax,%ax
L121:
  mov    0x18(%rsp),%rax
  test   %rax,%rax
  je     L31
  movl   $0xa,(%rax)
L31:
  mov    0x8(%rsp),%rax
  test   %rax,%rax
  je     L148
  movl   $0x0,(%rax)
L148:
  add    $0x38,%rsp
  mov    %r15d,%eax
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  ret
  nopw   0x0(%rax,%rax,1)
L115:
  mov    0x2c(%rsp),%r15d
  jmp    L148
```

assistant: ```c
unsigned int get_best_register_a_value_for_crazy(unsigned int source, unsigned int destination, unsigned int current_register_a_value, int *rotations, int *crazy_C2_first) {
  unsigned int value;
  int i;
  int not_modifiable_mask = 29524 - 1;
  int min_costs = INT_MAX;
  if ((value = get_register_a_value_for_crazy(source, destination, current_register_a_value)) == 0xFFFF) {
    return 0xFFFF;
  }
  if (value == 0 || value == 29524 || value == 59048 || value == 59048 - 1 || value == 59048 - 2) {
    if (rotations != 0)
      *rotations = 10;
    if (crazy_C2_first != 0)
      *crazy_C2_first = 0;
    return value;
  }
  for (i = 0; i < 10; i++) {
    unsigned int constant = get_register_a_value_for_crazy(source, destination, current_register_a_value);
    int diff = count_different_trits(constant, current_register_a_value, 29524);
    int diff2 = count_different_trits(constant, crazy(59048, current_register_a_value), 29524);
    int diff_needs_wrap = count_different_trits(constant, current_register_a_value, not_modifiable_mask);
    int diff2_needs_wrap = count_different_trits(constant, crazy(59048, current_register_a_value), not_modifiable_mask);
    int rots_diff = i + (diff_needs_wrap == 0 ? 0 : 10);
    int costs_diff = diff * 9 + rots_diff * 3;
    int rots_diff2 = i + (diff2_needs_wrap == 0 ? 0 : 10);
    int costs_diff2 = diff2 * 9 + rots_diff2 * 3 + 2;
    if (costs_diff == 0) {
      costs_diff = 6;
    }
    if (costs_diff < min_costs) {
      min_costs = costs_diff;
      if (rotations != 0)
        *rotations = rots_diff;
      value = constant;
      if (crazy_C2_first != 0)
        *crazy_C2_first = 0;
    }
    if (costs_diff2 < min_costs && crazy_C2_first != 0) {
      min_costs = costs_diff2;
      if (rotations != 0)
        *rotations = rots_diff2;
      value = constant;
      *crazy_C2_first = 1;
    }
    current_register_a_value = rotate_right(current_register_a_value);
    if (not_modifiable_mask > 0)
      not_modifiable_mask = rotate_right(not_modifiable_mask) - 1;
  }
  return value;
}
```