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

```asm
<odp_scan_until_marker>:
  endbr64
  push   %r13
  lea    D2(%rip),%r13
  push   %r12
  push   %rbp
  mov    %rsi,%rbp
  push   %rbx
  mov    %rdi,%rbx
  sub    $0x8,%rsp
  mov    (%rdi),%rax
  lea    (%rax,%rdx,1),%r12
  cmp    %r12,%rax
  jae    L66
  nopw   0x0(%rax,%rax,1)
L186:
  mov    0x0(%rbp),%rdx
  movzbl (%rax),%eax
  lea    0x1(%rdx),%rcx
  mov    %rcx,0x0(%rbp)
  mov    %al,(%rdx)
  cmp    $0x3f,%al
  jg     L11
  cmp    $0x21,%al
  jle    L87
  sub    $0x22,%eax
  cmp    $0x1d,%al
  ja     L87
  movzbl %al,%eax
  movslq 0x0(%r13,%rax,4),%rax
  add    %r13,%rax
  notrack jmp *%rax
  nopw   0x0(%rax,%rax,1)
L87:
  mov    (%rbx),%rax
  add    $0x1,%rax
  nop
L83:
  mov    %rax,(%rbx)
  cmp    %rax,%r12
  ja     L186
L66:
  xor    %eax,%eax
L49:
  add    $0x8,%rsp
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  ret
  nopl   (%rax)
  addq   $0x1,(%rbx)
  mov    $0x1,%eax
  subq   $0x1,0x0(%rbp)
  add    $0x8,%rsp
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  ret
  nopl   0x0(%rax)
  mov    (%rbx),%rdx
  lea    0x1(%rdx),%rax
  cmp    %r12,%rdx
  jae    L83
  cmpb   $0x2a,0x1(%rdx)
  jne    L83
  mov    %rax,(%rbx)
  mov    0x0(%rbp),%rax
  mov    %rbp,%rsi
  mov    %rbx,%rdi
  lea    0x1(%rax),%rcx
  mov    %rcx,0x0(%rbp)
  movzbl 0x1(%rdx),%edx
  mov    %dl,(%rax)
  mov    (%rbx),%rax
  mov    %r12d,%edx
  add    $0x1,%rax
  mov    %rax,(%rbx)
  sub    %eax,%edx
  call   <odp_scan_multi_line_comment@plt>
  mov    (%rbx),%rax
  add    $0x1,%rax
  jmp    L83
  nopl   (%rax)
  mov    (%rbx),%rdx
  lea    0x1(%rdx),%rax
  cmp    %r12,%rax
  jae    L120
  cmpb   $0x2d,0x1(%rdx)
  je     L47
L70:
  mov    %rax,(%rbx)
  jmp    L186
  nopw   0x0(%rax,%rax,1)
  mov    (%rbx),%rax
  mov    %r12d,%ecx
  mov    %rbp,%rdx
  mov    %rbx,%rsi
  mov    $0x27,%edi
  add    $0x1,%rax
  mov    %rax,(%rbx)
  sub    %eax,%ecx
  call   <odp_scan_until_char@plt>
  mov    (%rbx),%rax
  add    $0x1,%rax
  jmp    L83
  nopl   0x0(%rax,%rax,1)
  mov    (%rbx),%rax
  add    $0x1,%rax
L102:
  mov    %rax,(%rbx)
  mov    %r12d,%ecx
  mov    %rbp,%rdx
  mov    %rbx,%rsi
  sub    %eax,%ecx
  mov    $0xa,%edi
  call   <odp_scan_until_char@plt>
  mov    (%rbx),%rax
  add    $0x1,%rax
  jmp    L83
  nopl   0x0(%rax,%rax,1)
  mov    (%rbx),%rax
  mov    %r12d,%ecx
  mov    %rbp,%rdx
  mov    %rbx,%rsi
  mov    $0x22,%edi
  add    $0x1,%rax
  mov    %rax,(%rbx)
  sub    %eax,%ecx
  call   <odp_scan_until_char@plt>
  mov    (%rbx),%rax
  add    $0x1,%rax
  jmp    L83
  nopl   0x0(%rax,%rax,1)
L11:
  cmp    $0x5c,%al
  jne    L87
  mov    (%rbx),%rdx
  lea    0x1(%rdx),%rax
  cmp    %r12,%rdx
  jae    L83
  mov    %rax,(%rbx)
  mov    0x0(%rbp),%rax
  lea    0x1(%rax),%rcx
  mov    %rcx,0x0(%rbp)
  movzbl 0x1(%rdx),%edx
  mov    %dl,(%rax)
  mov    (%rbx),%rax
  add    $0x1,%rax
  jmp    L83
  nopl   0x0(%rax)
L120:
  mov    %rax,(%rbx)
  xor    %eax,%eax
  jmp    L49
  nopw   0x0(%rax,%rax,1)
L47:
  cmpb   $0x20,0x2(%rdx)
  jne    L70
  jmp    L102
```

assistant: ```c
int odp_scan_until_marker(char **sql_ptr, char **dest_ptr, long len) {
  char *end = *sql_ptr + len;
  char c;
  for (; *sql_ptr < end; ++(*sql_ptr)) {
    c = **sql_ptr;
    *((*dest_ptr)++) = c;
    switch (c) {
    case '\\':
      if (*sql_ptr < end) {
        *((*dest_ptr)++) = *(++(*sql_ptr));
      }
      break;
    case '\'':
      ++(*sql_ptr);
      odp_scan_until_char('\'', sql_ptr, dest_ptr, end - *sql_ptr);
      break;
    case '"':
      ++(*sql_ptr);
      odp_scan_until_char('"', sql_ptr, dest_ptr, end - *sql_ptr);
      break;
    case '/':
      if ((*sql_ptr < end) && *(*sql_ptr + 1) == '*') {
        *((*dest_ptr)++) = *(++(*sql_ptr));
        ++(*sql_ptr);
        odp_scan_multi_line_comment(sql_ptr, dest_ptr, end - *sql_ptr);
      }
      break;
    case '#':
      ++(*sql_ptr);
      odp_scan_until_char('\n', sql_ptr, dest_ptr, end - *sql_ptr);
      break;
    case '-':
      if (((*sql_ptr + 1) < end) && *(*sql_ptr + 1) == '-' && *(*sql_ptr + 2) == ' ') {
        ++(*sql_ptr);
        odp_scan_until_char('\n', sql_ptr, dest_ptr, end - *sql_ptr);
      }
      break;
    case '?':
      ++(*sql_ptr);
      --(*dest_ptr);
      return 1;
    }
  }
  return 0;
}
```