user: 请从给定的汇编指令推导出C源代码：

```asm
<searchSolutions>:
  endbr64
  push   %r15
  push   %r14
  xor    %r14d,%r14d
  push   %r13
  mov    %rdi,%r13
  push   %r12
  xor    %r12d,%r12d
  push   %rbp
  mov    %rdi,%rbp
  push   %rbx
  sub    $0x58,%rsp
  mov    %fs:0x28,%rax
  mov    %rax,0x48(%rsp)
  xor    %eax,%eax
  mov    %rsi,0x18(%rsp)
  nopl   0x0(%rax,%rax,1)
L105:
  mov    %r12d,%eax
  mov    $0xaaaaaaab,%edx
  mov    0x18(%rsp),%r8
  xor    %ebx,%ebx
  imul   %rdx,%rax
  shr    $0x21,%rax
  lea    (%rax,%rax,2),%eax
  mov    %eax,0x14(%rsp)
  jmp    L96
  nopl   0x0(%rax,%rax,1)
L74:
  add    $0x1,%rbx
  add    $0x4,%r8
  cmp    $0x9,%rbx
  je     L56
L96:
  mov    0x0(%r13,%rbx,4),%eax
  test   %eax,%eax
  jg     L74
  lea    0x20(%rsp),%r15
  xor    %edx,%edx
  mov    $0x9,%esi
  mov    %ebx,0x10(%rsp)
  mov    %r15,%rdi
  mov    %r8,0x8(%rsp)
  call   <initArray@plt>
  mov    0x10(%rsp),%edx
  mov    %r15,%rdi
  mov    %rbp,%rsi
  call   <elementsInColumn@plt>
  mov    %r15,%rdi
  mov    %r12d,%edx
  mov    %rbp,%rsi
  call   <elementsInLine@plt>
  mov    $0xaaaaaaab,%ecx
  mov    %ebx,%eax
  mov    0x14(%rsp),%edx
  imul   %rcx,%rax
  mov    %r15,%rdi
  mov    %rbp,%rsi
  shr    $0x21,%rax
  lea    (%rax,%rax,2),%ecx
  call   <elementsInRegion@plt>
  mov    0x20(%rsp),%r15d
  mov    0x8(%rsp),%r8
  test   %r15d,%r15d
  jne    L141
  addl   $0x2,(%r8)
  add    $0x1,%r14d
L141:
  mov    0x24(%rsp),%r11d
  test   %r11d,%r11d
  jne    L54
  addl   $0x4,(%r8)
  add    $0x1,%r14d
L54:
  mov    0x28(%rsp),%r10d
  test   %r10d,%r10d
  jne    L31
  addl   $0x8,(%r8)
  add    $0x1,%r14d
L31:
  mov    0x2c(%rsp),%r9d
  test   %r9d,%r9d
  jne    L28
  addl   $0x10,(%r8)
  add    $0x1,%r14d
L28:
  mov    0x30(%rsp),%edi
  test   %edi,%edi
  jne    L80
  addl   $0x20,(%r8)
  add    $0x1,%r14d
L80:
  mov    0x34(%rsp),%esi
  test   %esi,%esi
  jne    L95
  addl   $0x40,(%r8)
  add    $0x1,%r14d
L95:
  mov    0x38(%rsp),%ecx
  test   %ecx,%ecx
  jne    L23
  subl   $0xffffff80,(%r8)
  add    $0x1,%r14d
L23:
  mov    0x3c(%rsp),%edx
  test   %edx,%edx
  jne    L10
  addl   $0x100,(%r8)
  add    $0x1,%r14d
L10:
  mov    0x40(%rsp),%eax
  test   %eax,%eax
  jne    L74
  add    $0x1,%rbx
  addl   $0x200,(%r8)
  add    $0x1,%r14d
  add    $0x4,%r8
  cmp    $0x9,%rbx
  jne    L96
  nop
L56:
  add    $0x1,%r12d
  addq   $0x24,0x18(%rsp)
  add    $0x24,%r13
  cmp    $0x9,%r12d
  jne    L105
  mov    0x48(%rsp),%rax
  sub    %fs:0x28,%rax
  jne    L1
  add    $0x58,%rsp
  mov    %r14d,%eax
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  ret
L1:
  call   <__stack_chk_fail@plt>
```

assistant: ```c
int searchSolutions(int sudoku[9][9], int solutions[9][9]) {
  int i, j;
  int solutionsCount = 0;
  for (i = 0; i < 9; i++) {
    for (j = 0; j < 9; j++) {
      if (sudoku[i][j] > 0)
        continue;
      int seen[9];
      initArray(seen, 9, 0);
      elementsInColumn(seen, sudoku, j);
      elementsInLine(seen, sudoku, i);
      elementsInRegion(seen, sudoku, i - (i % (9 / 3)), j - (j % (9 / 3)));
      int k = 0;
      for (k = 0; k < 9; k++) {
        if (seen[k] == 0) {
          solutions[i][j] += 1 << k + 1;
          solutionsCount++;
        }
      }
    }
  }
  return solutionsCount;
}
```