user: Demonstrate the C code that generates the assembly output below:

```asm
<mygetopt>:
  endbr64
  push   %r15
  push   %r14
  push   %r13
  push   %r12
  push   %rbp
  push   %rbx
  sub    $0x28,%rsp
  mov    %edi,0x14(%rsp)
  mov    %rsi,%rbp
  mov    %rdx,(%rsp)
  mov    %rcx,%rbx
  mov    %r8,0x8(%rsp)
  cmpl   $0x1,D42(%rip)
  jne    L116
  mov    (%rcx),%eax
  cmp    %edi,%eax
  jge    L107
  cltq
  mov    (%rsi,%rax,8),%rax
  cmpb   $0x2d,(%rax)
  jne    L4
  cmpb   $0x0,0x1(%rax)
  je     L91
L59:
  mov    (%rbx),%eax
  mov    %eax,0x10(%rsp)
  cltq
  lea    0x0(,%rax,8),%rcx
  mov    %rcx,0x18(%rsp)
  mov    0x0(%rbp,%rax,8),%r14
  mov    D42(%rip),%r12d
  movslq %r12d,%r15
  movsbl (%r14,%r15,1),%r13d
  cmp    $0x3a,%r13d
  je     L57
  mov    %r13d,%esi
  mov    (%rsp),%rdi
  call   <strchr@plt>
  test   %rax,%rax
  je     L57
  cmpb   $0x3a,0x1(%rax)
  je     L132
  add    $0x1,%r12d
  mov    %r12d,D117(%rip)
  movslq %r12d,%r12
  cmpb   $0x0,(%r14,%r12,1)
  jne    L68
  movl   $0x1,D117(%rip)
  mov    0x10(%rsp),%eax
  add    $0x1,%eax
  mov    %eax,(%rbx)
L68:
  mov    0x8(%rsp),%rax
  movq   $0x0,(%rax)
L30:
  mov    %r13d,%eax
  add    $0x28,%rsp
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  ret
L116:
  movslq (%rcx),%rax
  mov    (%rsi,%rax,8),%rdi
  lea    D117(%rip),%rsi
  call   <strcmp@plt>
  test   %rax,%rax
  jne    L59
  addl   $0x1,(%rbx)
  mov    $0xffffffff,%r13d
  jmp    L30
L57:
  mov    %r13d,%esi
  lea    D67(%rip),%rdi
  call   <printf@plt>
  mov    (%rbx),%edx
  movslq %edx,%rax
  mov    0x0(%rbp,%rax,8),%rcx
  mov    D117(%rip),%eax
  add    $0x1,%eax
  mov    %eax,D69(%rip)
  cltq
  mov    $0x3f,%r13d
  cmpb   $0x0,(%rcx,%rax,1)
  jne    L30
  add    $0x1,%edx
  mov    %edx,(%rbx)
  movl   $0x1,D69(%rip)
  jmp    L30
L132:
  lea    0x1(%r14,%r15,1),%rax
  cmpb   $0x0,(%rax)
  je     L180
  mov    0x8(%rsp),%rdx
  mov    %rax,(%rdx)
  mov    (%rbx),%eax
  add    $0x1,%eax
L46:
  mov    %eax,(%rbx)
  movl   $0x1,D69(%rip)
  jmp    L30
L180:
  mov    0x10(%rsp),%eax
  add    $0x1,%eax
  mov    %eax,(%rbx)
  cmp    0x14(%rsp),%eax
  jge    L169
  mov    0x18(%rsp),%rax
  mov    0x8(%rbp,%rax,1),%rax
  mov    0x8(%rsp),%rdx
  mov    %rax,(%rdx)
  mov    (%rbx),%eax
  add    $0x1,%eax
  jmp    L46
L169:
  mov    %r13d,%esi
  lea    D69(%rip),%rdi
  call   <printf@plt>
  movl   $0x1,D69(%rip)
  mov    $0x3f,%r13d
  jmp    L30
L107:
  mov    $0xffffffff,%r13d
  jmp    L30
L4:
  mov    $0xffffffff,%r13d
  jmp    L30
L91:
  mov    $0xffffffff,%r13d
  jmp    L30
```

tool_calls: name: disassemble_data
arguments: data_tag: D117
type_guessed: string
name: disassemble_data
arguments: data_tag: D67
type_guessed: string
name: disassemble_data
arguments: data_tag: D69
type_guessed: string

tool: D117: --

tool: D67: : illegal option -- %c 


tool: D69: : option requires an argument -- %c


assistant: ```c
int mygetopt(int argc, char **argv, char *opts, int *optind, char **optarg) {
  static int sp = 1;
  register int c;
  register char *cp;
  if (sp == 1) {
    if (*optind >= argc || argv[*optind][0] != '-' || argv[*optind][1] == '\0')
      return -1;
  } else {
    if (strcmp(argv[*optind], "--") == 0) {
      *optind = *optind + 1;
      return -1;
    }
  }
  c = argv[*optind][sp];
  if (c == ':' || (cp = strchr(opts, c)) == 0) {
    printf(": illegal option -- %c \n", c);
    if (argv[*optind][++sp] == '\0') {
      *optind = *optind + 1;
      sp = 1;
    }
    return ('?');
  }
  if (*++cp == ':') {
    if (argv[*optind][sp + 1] != '\0') {
      *optarg = &argv[*optind][sp + 1];
      *optind = *optind + 1;
    } else {
      *optind = *optind + 1;
      if (*optind >= argc) {
        printf(": option requires an argument -- %c\n", c);
        sp = 1;
        return ('?');
      } else {
        *optarg = argv[*optind];
        *optind = *optind + 1;
      }
    }
    sp = 1;
  } else {
    if (argv[*optind][++sp] == '\0') {
      sp = 1;
      *optind = *optind + 1;
    }
    *optarg = 0;
  }
  return (c);
}
```