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

```asm
<topology_parsenet>:
  endbr64
  push   %r14
  push   %r13
  push   %r12
  push   %rbp
  push   %rbx
  mov    %rdi,%rcx
  mov    %rsi,%r10
  mov    %rdx,%r8
  mov    $0x1,%r11d
  mov    $0x0,%r9d
  mov    $0x0,%ebx
  cmpb   $0x2a,(%rdi)
  je     L26
L209:
  movzbl (%rcx),%eax
  lea    -0x30(%rax),%edx
  cmp    $0x9,%dl
  ja     L413
  mov    %ebx,%edx
L416:
  lea    (%rdx,%rdx,4),%edx
  movsbl %al,%eax
  lea    -0x30(%rax,%rdx,2),%edx
  mov    %rcx,%rsi
  add    $0x1,%rcx
  cmp    $0xff,%edx
  jg     L278
  movzbl (%rcx),%eax
  lea    -0x30(%rax),%edi
  cmp    $0x9,%dil
  jbe    L416
  lea    -0x1(%r11),%edi
  cmp    $0x2,%edi
  jg     L293
  cmp    $0x2e,%al
  jne    L316
  lea    0x2(%rsi),%rcx
  shl    $0x8,%r9d
  add    %edx,%r9d
L192:
  add    $0x1,%r11d
  jmp    L209
L26:
  mov    $0xffffffff,%eax
  cmpb   $0x0,0x1(%rdi)
  jne    L196
  movl   $0x0,(%rsi)
  movl   $0xffffffff,(%rdx)
  mov    $0x0,%eax
  jmp    L196
L293:
  shl    $0x8,%r9d
  add    %edx,%r9d
  cmp    $0x3,%r11d
  jle    L192
  movzbl (%rcx),%eax
  test   %al,%al
  je     L160
  cmp    $0x2f,%al
  je     L372
  cmp    $0x2d,%al
  jne    L432
  mov    %r9d,(%r10)
  add    $0x2,%rsi
  mov    $0x1,%r10d
  mov    $0x0,%r9d
  mov    $0x0,%r11d
L423:
  movzbl (%rsi),%eax
  lea    -0x30(%rax),%edx
  cmp    $0x9,%dl
  ja     L61
  mov    %r11d,%edx
L458:
  lea    (%rdx,%rdx,4),%edx
  movsbl %al,%eax
  lea    -0x30(%rax,%rdx,2),%edx
  mov    %rsi,%rdi
  add    $0x1,%rsi
  cmp    $0xff,%edx
  jg     L53
  movzbl (%rsi),%eax
  lea    -0x30(%rax),%ecx
  cmp    $0x9,%cl
  jbe    L458
  lea    -0x1(%r10),%ecx
  cmp    $0x2,%ecx
  jg     L364
  cmp    $0x2e,%al
  jne    L4
  lea    0x2(%rdi),%rsi
  shl    $0x8,%r9d
  add    %edx,%r9d
L114:
  add    $0x1,%r10d
  jmp    L423
L160:
  mov    %r9d,(%r10)
  mov    %r9d,(%r8)
  mov    $0x0,%eax
  jmp    L196
L372:
  mov    %r9d,(%r10)
  add    $0x2,%rsi
  mov    $0x1,%r12d
  mov    $0x0,%ebx
  mov    $0x0,%r11d
  mov    $0x0,%ebp
L394:
  movzbl (%rsi),%eax
  lea    -0x30(%rax),%edx
  cmp    $0x9,%dl
  ja     L115
  mov    %ebp,%edx
L401:
  lea    (%rdx,%rdx,4),%edx
  movsbl %al,%eax
  lea    -0x30(%rax,%rdx,2),%edx
  mov    %rsi,%rdi
  add    $0x1,%rsi
  cmp    $0xff,%edx
  jg     L456
  movzbl (%rsi),%eax
  lea    -0x30(%rax),%ecx
  cmp    $0x9,%cl
  jbe    L401
  mov    %ebx,%ecx
  test   %ebx,%ebx
  sete   %r14b
  cmp    $0x20,%edx
  setle  %r13b
  test   %r13b,%r14b
  je     L318
  test   %al,%al
  je     L19
L318:
  cmp    $0x2,%ecx
  jg     L317
  cmp    $0x2e,%al
  jne    L250
  lea    0x2(%rdi),%rsi
  shl    $0x8,%r11d
  add    %edx,%r11d
L210:
  add    $0x1,%ebx
  add    $0x1,%r12d
  jmp    L394
L19:
  mov    $0xffffffff,%r11d
  cmp    $0x1f,%edx
  jg     L63
  mov    $0x20,%ecx
  sub    %edx,%ecx
  shl    %cl,%r11d
  jmp    L63
L317:
  shl    $0x8,%r11d
  add    %edx,%r11d
  cmp    $0x3,%r12d
  jle    L210
  cmpb   $0x0,(%rsi)
  jne    L281
L63:
  and    %r11d,%r9d
  mov    %r9d,(%r10)
  not    %r11d
  or     %r9d,%r11d
  mov    %r11d,(%r8)
  mov    $0x0,%eax
  jmp    L196
L364:
  shl    $0x8,%r9d
  add    %edx,%r9d
  cmp    $0x3,%r10d
  jle    L114
  cmpb   $0x0,(%rsi)
  jne    L275
  mov    %r9d,(%r8)
  mov    $0x0,%eax
  jmp    L196
L413:
  mov    $0xffffffff,%eax
  jmp    L196
L278:
  mov    $0xffffffff,%eax
L196:
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  ret
L316:
  mov    $0xffffffff,%eax
  jmp    L196
L115:
  mov    $0xffffffff,%eax
  jmp    L196
L456:
  mov    $0xffffffff,%eax
  jmp    L196
L250:
  mov    $0xffffffff,%eax
  jmp    L196
L281:
  mov    $0xffffffff,%eax
  jmp    L196
L432:
  mov    $0xffffffff,%eax
  jmp    L196
L61:
  mov    $0xffffffff,%eax
  jmp    L196
L53:
  mov    $0xffffffff,%eax
  jmp    L196
L4:
  mov    $0xffffffff,%eax
  jmp    L196
L275:
  mov    $0xffffffff,%eax
  jmp    L196
```

assistant: ```c
int topology_parsenet(char *net, uint32_t *fromip, uint32_t *toip) {
  uint32_t ip, i, octet;
  if (net[0] == '*' && net[1] == 0) {
    *fromip = 0;
    *toip = 0xFFFFFFFFU;
    return 0;
  }
  ip = 0;
  for (i = 0; i < 4; i++) {
    if (*net >= '0' && *net <= '9') {
      octet = 0;
      while (*net >= '0' && *net <= '9') {
        octet *= 10;
        octet += (*net) - '0';
        net++;
        if (octet > 255) {
          return -1;
        }
      }
    } else {
      return -1;
    }
    if (i < 3) {
      if (*net != '.') {
        return -1;
      }
      net++;
    }
    ip *= 256;
    ip += octet;
  }
  if (*net == 0) {
    *fromip = ip;
    *toip = ip;
    return 0;
  }
  if (*net == '/') {
    *fromip = ip;
    ip = 0;
    net++;
    for (i = 0; i < 4; i++) {
      if (*net >= '0' && *net <= '9') {
        octet = 0;
        while (*net >= '0' && *net <= '9') {
          octet *= 10;
          octet += (*net) - '0';
          net++;
          if (octet > 255) {
            return -1;
          }
        }
      } else {
        return -1;
      }
      if (i == 0 && *net == 0 && octet <= 32) {
        ip = 0xFFFFFFFF;
        if (octet < 32) {
          ip <<= 32 - octet;
        }
        break;
      }
      if (i < 3) {
        if (*net != '.') {
          return -1;
        }
        net++;
      }
      ip *= 256;
      ip += octet;
    }
    if (*net != 0) {
      return -1;
    }
    *fromip &= ip;
    *toip = *fromip | (ip ^ 0xFFFFFFFFU);
    return 0;
  }
  if (*net == '-') {
    *fromip = ip;
    ip = 0;
    net++;
    for (i = 0; i < 4; i++) {
      if (*net >= '0' && *net <= '9') {
        octet = 0;
        while (*net >= '0' && *net <= '9') {
          octet *= 10;
          octet += *net - '0';
          net++;
          if (octet > 255) {
            return -1;
          }
        }
      } else {
        return -1;
      }
      if (i < 3) {
        if (*net != '.') {
          return -1;
        }
        net++;
      }
      ip *= 256;
      ip += octet;
    }
    if (*net != 0) {
      return -1;
    }
    *toip = ip;
    return 0;
  }
  return -1;
}
```