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

```asm
<__getopt_long>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  sub    $0x50,%rsp
  mov    %edi,-0x24(%rbp)
  mov    %rsi,-0x30(%rbp)
  mov    %rdx,-0x38(%rbp)
  mov    %rcx,-0x40(%rbp)
  mov    %r8,-0x48(%rbp)
  mov    %r9d,-0x28(%rbp)
  mov    D82(%rip),%rax
  mov    (%rax),%eax
  cmp    %eax,-0x24(%rbp)
  jle    L285
  mov    D82(%rip),%rax
  mov    (%rax),%eax
  cltq
  lea    0x0(,%rax,8),%rdx
  mov    -0x30(%rbp),%rax
  add    %rdx,%rax
  mov    (%rax),%rax
  test   %rax,%rax
  je     L285
  mov    D82(%rip),%rax
  mov    (%rax),%eax
  cltq
  lea    0x0(,%rax,8),%rdx
  mov    -0x30(%rbp),%rax
  add    %rdx,%rax
  mov    (%rax),%rax
  movzbl (%rax),%eax
  cmp    $0x2d,%al
  je     L12
L285:
  mov    $0xffffffff,%eax
  jmp    L101
L12:
  cmpl   $0x0,-0x28(%rbp)
  je     L175
  mov    D82(%rip),%rax
  mov    (%rax),%eax
  cltq
  lea    0x0(,%rax,8),%rdx
  mov    -0x30(%rbp),%rax
  add    %rdx,%rax
  mov    (%rax),%rax
  add    $0x1,%rax
  movzbl (%rax),%eax
  test   %al,%al
  jne    L88
L175:
  mov    D82(%rip),%rax
  mov    (%rax),%eax
  cltq
  lea    0x0(,%rax,8),%rdx
  mov    -0x30(%rbp),%rax
  add    %rdx,%rax
  mov    (%rax),%rax
  add    $0x1,%rax
  movzbl (%rax),%eax
  cmp    $0x2d,%al
  jne    L9
  mov    D82(%rip),%rax
  mov    (%rax),%eax
  cltq
  lea    0x0(,%rax,8),%rdx
  mov    -0x30(%rbp),%rax
  add    %rdx,%rax
  mov    (%rax),%rax
  add    $0x2,%rax
  movzbl (%rax),%eax
  test   %al,%al
  je     L9
L88:
  movl   $0x0,-0x14(%rbp)
  jmp    L16
L57:
  mov    -0x14(%rbp),%eax
  cltq
  shl    $0x5,%rax
  mov    %rax,%rdx
  mov    -0x40(%rbp),%rax
  add    %rdx,%rax
  mov    (%rax),%rax
  mov    %rax,-0x10(%rbp)
  mov    D82(%rip),%rax
  mov    (%rax),%eax
  cltq
  lea    0x0(,%rax,8),%rdx
  mov    -0x30(%rbp),%rax
  add    %rdx,%rax
  mov    (%rax),%rax
  add    $0x1,%rax
  mov    %rax,-0x8(%rbp)
  mov    -0x8(%rbp),%rax
  movzbl (%rax),%eax
  cmp    $0x2d,%al
  jne    L185
  addq   $0x1,-0x8(%rbp)
  jmp    L185
L74:
  addq   $0x1,-0x10(%rbp)
  addq   $0x1,-0x8(%rbp)
L185:
  mov    -0x10(%rbp),%rax
  movzbl (%rax),%eax
  test   %al,%al
  je     L247
  mov    -0x10(%rbp),%rax
  movzbl (%rax),%edx
  mov    -0x8(%rbp),%rax
  movzbl (%rax),%eax
  cmp    %al,%dl
  je     L74
L247:
  mov    -0x10(%rbp),%rax
  movzbl (%rax),%eax
  test   %al,%al
  jne    L115
  mov    -0x8(%rbp),%rax
  movzbl (%rax),%eax
  test   %al,%al
  je     L144
  mov    -0x8(%rbp),%rax
  movzbl (%rax),%eax
  cmp    $0x3d,%al
  jne    L115
L144:
  mov    -0x8(%rbp),%rax
  movzbl (%rax),%eax
  cmp    $0x3d,%al
  jne    L254
  mov    -0x14(%rbp),%eax
  cltq
  shl    $0x5,%rax
  mov    %rax,%rdx
  mov    -0x40(%rbp),%rax
  add    %rdx,%rax
  mov    0x8(%rax),%rax
  test   %rax,%rax
  je     L103
  mov    -0x8(%rbp),%rax
  lea    0x1(%rax),%rdx
  mov    D122(%rip),%rax
  mov    %rdx,(%rax)
  jmp    L45
L254:
  mov    -0x14(%rbp),%eax
  cltq
  shl    $0x5,%rax
  mov    %rax,%rdx
  mov    -0x40(%rbp),%rax
  add    %rdx,%rax
  mov    0x8(%rax),%rdx
  mov    D5(%rip),%rax
  mov    (%rax),%rax
  cmp    %rax,%rdx
  jne    L166
  mov    D82(%rip),%rax
  mov    (%rax),%eax
  lea    0x1(%rax),%edx
  mov    D82(%rip),%rax
  mov    %edx,(%rax)
  mov    D82(%rip),%rax
  mov    (%rax),%eax
  cltq
  lea    0x0(,%rax,8),%rdx
  mov    -0x30(%rbp),%rax
  add    %rdx,%rax
  mov    (%rax),%rdx
  mov    D122(%rip),%rax
  mov    %rdx,(%rax)
  mov    D122(%rip),%rax
  mov    (%rax),%rax
  test   %rax,%rax
  jne    L45
  mov    $0x3a,%eax
  jmp    L101
L166:
  mov    D122(%rip),%rax
  movq   $0x0,(%rax)
L45:
  mov    D82(%rip),%rax
  mov    (%rax),%eax
  lea    0x1(%rax),%edx
  mov    D82(%rip),%rax
  mov    %edx,(%rax)
  cmpq   $0x0,-0x48(%rbp)
  je     L96
  mov    -0x48(%rbp),%rax
  mov    -0x14(%rbp),%edx
  mov    %edx,(%rax)
L96:
  mov    -0x14(%rbp),%eax
  cltq
  shl    $0x5,%rax
  mov    %rax,%rdx
  mov    -0x40(%rbp),%rax
  add    %rdx,%rax
  mov    0x10(%rax),%rax
  test   %rax,%rax
  je     L196
  mov    -0x14(%rbp),%eax
  cltq
  shl    $0x5,%rax
  mov    %rax,%rdx
  mov    -0x40(%rbp),%rax
  add    %rax,%rdx
  mov    -0x14(%rbp),%eax
  cltq
  shl    $0x5,%rax
  mov    %rax,%rcx
  mov    -0x40(%rbp),%rax
  add    %rcx,%rax
  mov    0x10(%rax),%rax
  mov    0x18(%rdx),%edx
  mov    %edx,(%rax)
  mov    $0x0,%eax
  jmp    L101
L196:
  mov    -0x14(%rbp),%eax
  cltq
  shl    $0x5,%rax
  mov    %rax,%rdx
  mov    -0x40(%rbp),%rax
  add    %rdx,%rax
  mov    0x18(%rax),%eax
  jmp    L101
L115:
  nop
  jmp    L110
L103:
  nop
L110:
  addl   $0x1,-0x14(%rbp)
L16:
  mov    -0x14(%rbp),%eax
  cltq
  shl    $0x5,%rax
  mov    %rax,%rdx
  mov    -0x40(%rbp),%rax
  add    %rdx,%rax
  mov    (%rax),%rax
  test   %rax,%rax
  jne    L57
  mov    D82(%rip),%rax
  mov    (%rax),%eax
  cltq
  lea    0x0(,%rax,8),%rdx
  mov    -0x30(%rbp),%rax
  add    %rdx,%rax
  mov    (%rax),%rax
  add    $0x1,%rax
  movzbl (%rax),%eax
  cmp    $0x2d,%al
  jne    L9
  mov    D82(%rip),%rax
  mov    (%rax),%eax
  lea    0x1(%rax),%edx
  mov    D82(%rip),%rax
  mov    %edx,(%rax)
  mov    $0x3f,%eax
  jmp    L101
L9:
  mov    -0x38(%rbp),%rdx
  mov    -0x30(%rbp),%rcx
  mov    -0x24(%rbp),%eax
  mov    %rcx,%rsi
  mov    %eax,%edi
  call   <getopt@plt>
L101:
  leave
  ret
```

assistant: ```c
int __getopt_long(int argc, char *const *argv, const char *optstring, const struct option *longopts, int *idx, int longonly) {
  if (optind >= argc || !argv[optind] || argv[optind][0] != '-')
    return -1;
  if ((longonly && argv[optind][1]) || (argv[optind][1] == '-' && argv[optind][2])) {
    int i;
    for (i = 0; longopts[i].name; i++) {
      const char *name = longopts[i].name;
      char *opt = argv[optind] + 1;
      if (*opt == '-')
        opt++;
      for (; *name && *name == *opt; name++, opt++)
        ;
      if (*name || (*opt && *opt != '='))
        continue;
      if (*opt == '=') {
        if (!longopts[i].has_arg)
          continue;
        optarg = opt + 1;
      } else {
        if (longopts[i].has_arg == required_argument) {
          if (!(optarg = argv[++optind]))
            return ':';
        } else
          optarg = NULL;
      }
      optind++;
      if (idx)
        *idx = i;
      if (longopts[i].flag) {
        *longopts[i].flag = longopts[i].val;
        return 0;
      }
      return longopts[i].val;
    }
    if (argv[optind][1] == '-') {
      optind++;
      return '?';
    }
  }
  return getopt(argc, argv, optstring);
}
```