user: What would the C source look like for the assembly code provided here?

```asm
<isValidSudoku0>:
  endbr64
  push   %r15
  push   %r14
  push   %r13
  push   %r12
  mov    %esi,%r12d
  push   %rbp
  push   %rbx
  movslq %edx,%rbx
  sub    $0x48,%rsp
  mov    %rdi,0x8(%rsp)
  mov    %fs:0x28,%rax
  mov    %rax,0x38(%rsp)
  xor    %eax,%eax
  test   %esi,%esi
  jle    L197
  mov    0x8(%rsp),%rcx
  lea    -0x1(%rsi),%eax
  lea    0x10(%rsp),%rbp
  movslq %ebx,%r13
  mov    %rcx,%r15
  lea    0x8(%rcx,%rax,8),%r14
L133:
  xor    %esi,%esi
  mov    $0x28,%edx
  mov    %rbp,%rdi
  call   <memset@plt>
  test   %ebx,%ebx
  jle    L29
  mov    (%r15),%rdx
  lea    0x0(%r13,%rdx,1),%r8
  nopl   0x0(%rax,%rax,1)
L195:
  movsbl (%rdx),%eax
  cmp    $0x2e,%al
  je     L134
  sub    $0x30,%eax
  cltq
  mov    0x10(%rsp,%rax,4),%esi
  lea    0x1(%rsi),%edi
  mov    %edi,0x10(%rsp,%rax,4)
  test   %esi,%esi
  jne    L127
L134:
  add    $0x1,%rdx
  cmp    %rdx,%r8
  jne    L195
L29:
  add    $0x8,%r15
  cmp    %r15,%r14
  jne    L133
L23:
  test   %ebx,%ebx
  jle    L122
  mov    0x8(%rsp),%rcx
  lea    -0x1(%r12),%eax
  xor    %r13d,%r13d
  lea    0x8(%rcx,%rax,8),%r14
L215:
  mov    $0x28,%edx
  xor    %esi,%esi
  mov    %rbp,%rdi
  call   <memset@plt>
  mov    0x8(%rsp),%rdx
  test   %r12d,%r12d
  jle    L26
L110:
  mov    (%rdx),%rax
  movsbl (%rax,%r13,1),%eax
  cmp    $0x2e,%al
  je     L206
  sub    $0x30,%eax
  cltq
  mov    0x10(%rsp,%rax,4),%esi
  lea    0x1(%rsi),%edi
  mov    %edi,0x10(%rsp,%rax,4)
  test   %esi,%esi
  jne    L127
L206:
  add    $0x8,%rdx
  cmp    %rdx,%r14
  jne    L110
L26:
  add    $0x1,%r13
  cmp    %r13,%rbx
  jne    L215
L122:
  mov    0x8(%rsp),%r13
  xor    %r12d,%r12d
L35:
  xor    %ebx,%ebx
L157:
  mov    $0x28,%edx
  xor    %esi,%esi
  mov    %rbp,%rdi
  call   <memset@plt>
  xor    %r8d,%r8d
  lea    0x3(%rbx),%r10
L30:
  mov    0x0(%r13,%r8,8),%rsi
  lea    (%rsi,%rbx,1),%rdx
  add    %r10,%rsi
L184:
  movsbl (%rdx),%eax
  cmp    $0x2e,%al
  je     L42
  sub    $0x30,%eax
  cltq
  mov    0x10(%rsp,%rax,4),%edi
  lea    0x1(%rdi),%r9d
  mov    %r9d,0x10(%rsp,%rax,4)
  test   %edi,%edi
  jne    L127
L42:
  add    $0x1,%rdx
  cmp    %rdx,%rsi
  jne    L184
  add    $0x1,%r8
  cmp    $0x3,%r8
  jne    L30
  cmp    $0x9,%r10
  je     L12
  mov    %r10,%rbx
  jmp    L157
  nopl   (%rax)
L127:
  xor    %eax,%eax
L111:
  mov    0x38(%rsp),%rdx
  sub    %fs:0x28,%rdx
  jne    L10
  add    $0x48,%rsp
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  ret
L197:
  lea    0x10(%rsp),%rbp
  jmp    L23
L12:
  add    $0x3,%r12d
  add    $0x18,%r13
  cmp    $0x9,%r12d
  jne    L35
  mov    $0x1,%eax
  jmp    L111
L10:
  call   <__stack_chk_fail@plt>
```

assistant: ```c
bool isValidSudoku0(char **board, int rSize, int cSize) {
  int a[10];
  int space = sizeof(int) * 10;
  for (int i = 0; i < rSize; i++) {
    memset(a, 0, space);
    for (int j = 0; j < cSize; j++) {
      if (board[i][j] != '.')
        if (a[board[i][j] - '0']++)
          return false;
    }
  }
  for (int i = 0; i < cSize; i++) {
    memset(a, 0, space);
    for (int j = 0; j < rSize; j++) {
      if (board[j][i] != '.')
        if (a[board[j][i] - '0']++)
          return false;
    }
  }
  for (int row = 0; row < 9; row += 3)
    for (int col = 0; col < 9; col += 3) {
      memset(a, 0, space);
      for (int i = 0; i < 3; i++)
        for (int j = 0; j < 3; j++) {
          if (board[row + i][col + j] != '.')
            if (a[board[row + i][col + j] - '0']++)
              return false;
        }
    }
  return true;
}
```