user: 请显示与下面列出的汇编代码相匹配的C语言实现：

```asm
<parse_relax>:
  endbr64
  push   %r15
  push   %r14
  push   %r13
  push   %r12
  push   %rbp
  push   %rbx
  lea    D82(%rip),%rbx
  sub    $0x8,%rsp
  call   <xstrdup@plt>
  mov    %rax,%r13
  mov    %rax,%rdi
  call   <assert@plt>
  mov    %rbx,%rsi
  mov    %r13,%rdi
  call   <strtok@plt>
  test   %rax,%rax
  je     L128
  mov    %rax,%r15
  xor    %r12d,%r12d
  lea    D83(%rip),%rbp
  lea    D21(%rip),%r14
  jmp    L70
  nop
L69:
  or     $0x1,%r12d
L43:
  mov    %rbx,%rsi
  xor    %edi,%edi
  call   <strtok@plt>
  mov    %rax,%r15
  test   %rax,%rax
  je     L139
L70:
  mov    %rbp,%rsi
  mov    %r15,%rdi
  call   <strcmp@plt>
  test   %rax,%rax
  je     L69
  mov    %r14,%rsi
  mov    %r15,%rdi
  call   <strcmp@plt>
  test   %rax,%rax
  jne    L87
L120:
  or     $0x2,%r12d
  jmp    L43
  nopl   0x0(%rax)
L128:
  xor    %r12d,%r12d
L139:
  mov    %r13,%rdi
  call   <free@plt>
  add    $0x8,%rsp
  mov    %r12d,%eax
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  ret
  nopl   (%rax)
L87:
  lea    D81(%rip),%rsi
  mov    %r15,%rdi
  call   <strcmp@plt>
  test   %rax,%rax
  je     L20
  lea    D72(%rip),%rsi
  mov    %r15,%rdi
  call   <strcmp@plt>
  test   %rax,%rax
  jne    L9
  or     $0x4,%r12d
  jmp    L43
  nopl   0x0(%rax)
L20:
  lea    D24(%rip),%rdi
  call   <warnf@plt>
  jmp    L120
  cs nopw 0x0(%rax,%rax,1)
L9:
  lea    D10(%rip),%rsi
  mov    %r15,%rdi
  call   <strcmp@plt>
  test   %rax,%rax
  jne    L64
  or     $0x8,%r12d
  jmp    L43
L64:
  lea    D27(%rip),%rsi
  mov    %r15,%rdi
  call   <strcmp@plt>
  test   %rax,%rax
  jne    L85
  or     $0x10,%r12d
  jmp    L43
L85:
  mov    %r15,%rsi
  lea    D30(%rip),%rdi
  call   <fatal@plt>
  jmp    L43
```

tool_calls: name: read_data
arguments: tag: D82
data_type: string
name: read_data
arguments: tag: D83
data_type: string
name: read_data
arguments: tag: D21
data_type: string
name: read_data
arguments: tag: D81
data_type: string
name: read_data
arguments: tag: D72
data_type: string
name: read_data
arguments: tag: D24
data_type: string
name: read_data
arguments: tag: D10
data_type: string
name: read_data
arguments: tag: D27
data_type: string
name: read_data
arguments: tag: D30
data_type: string

tool: D82: ,

tool: D83: prefer-explicit

tool: D21: locally-static

tool: D81: generic-static

tool: D72: universal-bound

tool: D24: relax option 'generic-static' is deprecated: use 'locally-static' instead

tool: D10: pure-files

tool: D27: impure

tool: D30: invalid relax option '%s'

assistant: ```c
unsigned parse_relax(const char *str) {
  char *copy = xstrdup(str);
  assert(copy);
  unsigned mask = 0;
  char *token = strtok(copy, ",");
  while (token != NULL) {
    if (strcmp(token, "prefer-explicit") == 0)
      mask |= (1 << 0);
    else if (strcmp(token, "locally-static") == 0)
      mask |= (1 << 1);
    else if (strcmp(token, "generic-static") == 0) {
      warnf("relax option 'generic-static' is deprecated: use "
            "'locally-static' instead");
      mask |= (1 << 1);
    } else if (strcmp(token, "universal-bound") == 0)
      mask |= (1 << 2);
    else if (strcmp(token, "pure-files") == 0)
      mask |= (1 << 3);
    else if (strcmp(token, "impure") == 0)
      mask |= (1 << 4);
    else
      fatal("invalid relax option '%s'", token);
    token = strtok(NULL, ",");
  }
  free(copy);
  return mask;
}
```