user: 下面的汇编指令对应的C源代码是什么:

```asm
<parse_qrels_prefs_line>:
  endbr64
  push   %r15
  mov    %rcx,%r15
  push   %r14
  mov    %r8,%r14
  push   %r13
  mov    %rdi,%r13
  push   %r12
  mov    %rdx,%r12
  push   %rbp
  mov    %rsi,%rbp
  push   %rbx
  sub    $0x8,%rsp
  mov    (%rdi),%rbx
  movsbl (%rbx),%edi
  cmp    $0xa,%dil
  jne    L328
  jmp    L226
  nop
L57:
  movsbl 0x1(%rbx),%edi
  add    $0x1,%rbx
  cmp    $0xa,%dil
  je     L226
L328:
  call   <isspace@plt>
  test   %rax,%rax
  jne    L57
L226:
  mov    %rbx,0x0(%rbp)
  jmp    L244
  xchg   %ax,%ax
L312:
  add    $0x1,%rbx
L244:
  movsbl (%rbx),%edi
  call   <isspace@plt>
  test   %rax,%rax
  je     L312
  cmpb   $0xa,(%rbx)
  je     L197
  movsbl 0x1(%rbx),%edi
  movb   $0x0,(%rbx)
  lea    0x1(%rbx),%rbp
  cmp    $0xa,%dil
  jne    L37
  jmp    L149
  nopl   (%rax)
L85:
  movsbl 0x1(%rbp),%edi
  add    $0x1,%rbp
  cmp    $0xa,%dil
  je     L149
L37:
  call   <isspace@plt>
  test   %rax,%rax
  jne    L85
L149:
  mov    %rbp,(%r12)
  jmp    L219
  xchg   %ax,%ax
L18:
  add    $0x1,%rbp
L219:
  movsbl 0x0(%rbp),%edi
  call   <isspace@plt>
  test   %rax,%rax
  je     L18
  cmpb   $0xa,0x0(%rbp)
  je     L197
  movsbl 0x1(%rbp),%edi
  movb   $0x0,0x0(%rbp)
  lea    0x1(%rbp),%r12
  cmp    $0xa,%dil
  jne    L24
  jmp    L134
L144:
  movsbl 0x1(%r12),%edi
  add    $0x1,%r12
  cmp    $0xa,%dil
  je     L134
L24:
  call   <isspace@plt>
  test   %rax,%rax
  jne    L144
L134:
  mov    %r12,(%r15)
  jmp    L109
  nop
L82:
  add    $0x1,%r12
L109:
  movsbl (%r12),%edi
  call   <isspace@plt>
  test   %rax,%rax
  je     L82
  cmpb   $0xa,(%r12)
  je     L197
  movsbl 0x1(%r12),%edi
  movb   $0x0,(%r12)
  lea    0x1(%r12),%rbx
  cmp    $0xa,%dil
  jne    L2
  jmp    L197
  nopl   0x0(%rax)
L19:
  movsbl 0x1(%rbx),%edi
  add    $0x1,%rbx
  cmp    $0xa,%dil
  je     L197
L2:
  call   <isspace@plt>
  test   %rax,%rax
  jne    L19
  cmpb   $0xa,(%rbx)
  je     L197
  mov    %rbx,(%r14)
  nopl   0x0(%rax)
L302:
  movsbl (%rbx),%edi
  call   <isspace@plt>
  mov    %rbx,%rdx
  add    $0x1,%rbx
  test   %rax,%rax
  je     L302
  cmpb   $0xa,(%rdx)
  je     L271
  movsbl 0x1(%rdx),%edi
  movb   $0x0,(%rdx)
  cmp    $0xa,%dil
  jne    L338
  jmp    L1
L137:
  movsbl 0x1(%rbx),%edi
  add    $0x1,%rbx
  cmp    $0xa,%dil
  je     L1
L338:
  call   <isspace@plt>
  test   %rax,%rax
  jne    L137
  cmpb   $0xa,(%rbx)
  jne    L197
L1:
  mov    %rbx,%rdx
L271:
  movb   $0x0,(%rdx)
  add    $0x1,%rdx
  xor    %eax,%eax
  mov    %rdx,0x0(%r13)
L283:
  add    $0x8,%rsp
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  ret
  nopl   0x0(%rax)
L197:
  mov    $0xffffffff,%eax
  jmp    L283
```

assistant: ```c
int parse_qrels_prefs_line(char **start_ptr, char **qid_ptr, char **jg_ptr, char **docno_ptr, char **rel_ptr) {
  char *ptr = *start_ptr;
  while (*ptr != '\n' && isspace(*ptr))
    ptr++;
  *qid_ptr = ptr;
  while (!isspace(*ptr))
    ptr++;
  if (*ptr == '\n')
    return (-1);
  *ptr++ = '\0';
  while (*ptr != '\n' && isspace(*ptr))
    ptr++;
  *jg_ptr = ptr;
  while (!isspace(*ptr))
    ptr++;
  if (*ptr == '\n')
    return (-1);
  *ptr++ = '\0';
  while (*ptr != '\n' && isspace(*ptr))
    ptr++;
  *docno_ptr = ptr;
  while (!isspace(*ptr))
    ptr++;
  if (*ptr == '\n')
    return (-1);
  *ptr++ = '\0';
  while (*ptr != '\n' && isspace(*ptr))
    ptr++;
  if (*ptr == '\n')
    return (-1);
  *rel_ptr = ptr;
  while (!isspace(*ptr))
    ptr++;
  if (*ptr != '\n') {
    *ptr++ = '\0';
    while (*ptr != '\n' && isspace(*ptr))
      ptr++;
    if (*ptr != '\n')
      return (-1);
  }
  *ptr++ = '\0';
  *start_ptr = ptr;
  return (0);
}
```