user: 提供的汇编代码用C语言表示会是什么样子：

```asm
<parse_input>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  sub    $0x50,%rsp
  mov    %rdi,-0x38(%rbp)
  mov    %esi,-0x3c(%rbp)
  mov    %rdx,-0x48(%rbp)
  movl   $0x0,-0x24(%rbp)
  movl   $0x0,-0x20(%rbp)
  movl   $0x2,-0x1c(%rbp)
  mov    -0x48(%rbp),%rax
  movl   $0x0,(%rax)
  mov    -0x1c(%rbp),%eax
  cltq
  shl    $0x3,%eax
  mov    %eax,%edi
  call   <malloc@plt>
  mov    %rax,-0x18(%rbp)
  cmpq   $0x0,-0x18(%rbp)
  jne    L31
  mov    D0(%rip),%rax
  mov    (%rax),%eax
  mov    %eax,%edi
  call   <exit@plt>
L31:
  cmpq   $0x0,-0x38(%rbp)
  jne    L3
  mov    $0x0,%eax
  jmp    L53
L15:
  mov    -0x20(%rbp),%eax
  movslq %eax,%rdx
  mov    -0x38(%rbp),%rax
  add    %rdx,%rax
  movzbl (%rax),%eax
  cmp    $0x20,%al
  je     L109
  mov    -0x20(%rbp),%eax
  movslq %eax,%rdx
  mov    -0x38(%rbp),%rax
  add    %rdx,%rax
  movzbl (%rax),%eax
  cmp    $0xa,%al
  jne    L96
L109:
  mov    -0x20(%rbp),%eax
  movslq %eax,%rdx
  mov    -0x38(%rbp),%rax
  add    %rdx,%rax
  movb   $0x0,(%rax)
  mov    -0x24(%rbp),%eax
  movslq %eax,%rsi
  mov    -0x48(%rbp),%rax
  mov    (%rax),%eax
  lea    0x1(%rax),%ecx
  mov    -0x48(%rbp),%rdx
  mov    %ecx,(%rdx)
  cltq
  lea    0x0(,%rax,8),%rdx
  mov    -0x18(%rbp),%rax
  add    %rdx,%rax
  mov    -0x38(%rbp),%rdx
  add    %rsi,%rdx
  mov    %rdx,(%rax)
  mov    -0x20(%rbp),%eax
  add    $0x1,%eax
  mov    %eax,-0x24(%rbp)
  mov    -0x48(%rbp),%rax
  mov    (%rax),%eax
  cmp    %eax,-0x1c(%rbp)
  jne    L96
  shll   -0x1c(%rbp)
  mov    -0x1c(%rbp),%eax
  cltq
  shl    $0x3,%eax
  mov    %eax,%edx
  mov    -0x18(%rbp),%rax
  mov    %edx,%esi
  mov    %rax,%rdi
  call   <realloc@plt>
  mov    %rax,-0x8(%rbp)
  cmpq   $0x0,-0x8(%rbp)
  jne    L93
  mov    -0x18(%rbp),%rax
  mov    %rax,%rdi
  call   <free@plt>
  mov    $0x0,%eax
  jmp    L53
L93:
  mov    -0x8(%rbp),%rax
  mov    %rax,-0x18(%rbp)
L96:
  addl   $0x1,-0x20(%rbp)
L3:
  mov    -0x20(%rbp),%eax
  cmp    -0x3c(%rbp),%eax
  jl     L15
  mov    -0x48(%rbp),%rax
  mov    (%rax),%eax
  cmp    %eax,-0x1c(%rbp)
  jne    L5
  mov    -0x1c(%rbp),%eax
  add    $0x1,%eax
  cltq
  shl    $0x3,%eax
  mov    %eax,%edx
  mov    -0x18(%rbp),%rax
  mov    %edx,%esi
  mov    %rax,%rdi
  call   <realloc@plt>
  mov    %rax,-0x10(%rbp)
  cmpq   $0x0,-0x10(%rbp)
  jne    L33
  mov    $0x0,%eax
  jmp    L53
L33:
  mov    -0x10(%rbp),%rax
  mov    %rax,-0x18(%rbp)
L5:
  mov    -0x48(%rbp),%rax
  mov    (%rax),%eax
  cltq
  lea    0x0(,%rax,8),%rdx
  mov    -0x18(%rbp),%rax
  add    %rdx,%rax
  movq   $0x0,(%rax)
  mov    -0x18(%rbp),%rax
L53:
  leave
  ret
```

assistant: ```c
char **parse_input(char *input, ssize_t len, int *argc) {
  int arg_start = 0;
  int i = 0;
  int lim = 2;
  char **args;
  *argc = 0;
  args = malloc(lim * sizeof(char *));
  if (!args)
    exit(EXIT_FAILURE);
  if (!input)
    return NULL;
  for (; i < len; i++) {
    if (input[i] == ' ' || input[i] == '\n') {
      input[i] = '\0';
      *(args + (*argc)++) = input + arg_start;
      arg_start = i + 1;
      if (*argc == lim) {
        lim *= 2;
        char **new = realloc(args, lim * sizeof(char *));
        if (!new) {
          free(args);
          return NULL;
        }
        args = new;
      }
    }
  }
  if (*argc == lim) {
    char **new = realloc(args, (lim + 1) * sizeof(char *));
    if (!new) {
      return NULL;
    }
    args = new;
  }
  *(args + *argc) = NULL;
  return args;
}
```