user: 下面的汇编指令对应的C源代码是什么：

```asm
<hcfg_parse>:
  endbr64
  push   %r13
  push   %r12
  mov    %rdx,%r12
  push   %rbp
  mov    %rdi,%rbp
  push   %rbx
  mov    %rsi,%rbx
  sub    $0x8,%rsp
  movq   $0x0,(%rsi)
  movq   $0x0,(%rdx)
  jmp    L104
  nopw   0x0(%rax,%rax,1)
L256:
  cmpb   $0xa,0x0(%rbp)
  je     L178
  add    $0x1,%rbp
L104:
  movsbl 0x0(%rbp),%edi
  call   <isspace@plt>
  test   %rax,%rax
  jne    L256
  movsbl 0x0(%rbp),%edi
  cmp    $0xa,%dil
  je     L178
  cmp    $0x23,%dil
  je     L178
  call   <isalnum@plt>
  test   %rax,%rax
  jne    L123
  cmpb   $0x5f,0x0(%rbp)
  jne    L82
L123:
  mov    %rbp,(%rbx)
  jmp    L36
  nopl   (%rax)
L288:
  call   <toupper@plt>
  add    $0x1,%rbp
  mov    %al,-0x1(%rbp)
L36:
  movsbl 0x0(%rbp),%edi
  call   <isalnum@plt>
  movsbl 0x0(%rbp),%edi
  test   %rax,%rax
  jne    L288
  cmp    $0x5f,%dil
  je     L288
  mov    %rbp,%r13
  jmp    L242
  nopl   0x0(%rax)
L349:
  cmpb   $0xa,0x0(%r13)
  je     L82
  movsbl 0x1(%r13),%edi
  add    $0x1,%r13
L242:
  call   <isspace@plt>
  test   %rax,%rax
  jne    L349
  cmpb   $0x3d,0x0(%r13)
  lea    0x1(%r13),%rbx
  je     L59
  jmp    L82
  xchg   %ax,%ax
L149:
  cmpb   $0xa,(%rbx)
  je     L340
  add    $0x1,%rbx
L59:
  movsbl (%rbx),%edi
  call   <isspace@plt>
  test   %rax,%rax
  jne    L149
L340:
  cmp    %rbx,%rbp
  jae    L51
  mov    %rbx,%rdx
  mov    %rbp,%rdi
  xor    %esi,%esi
  sub    %rbp,%rdx
  mov    %rbx,%rbp
  call   <memset@plt>
L51:
  movzbl (%rbx),%eax
  cmp    $0xa,%al
  je     L219
  test   %al,%al
  je     L219
  mov    %rbx,(%r12)
  movzbl (%rbx),%eax
  test   %al,%al
  je     L314
  cmp    $0xa,%al
  jne    L117
  jmp    L314
  nopl   0x0(%rax)
L62:
  cmp    $0x5c,%al
  sete   %al
  add    $0x1,%rbp
  movzbl %al,%eax
  add    %rbx,%rax
  movzbl (%rax),%edx
  lea    0x1(%rax),%rbx
  mov    %dl,-0x1(%rbp)
  movzbl 0x1(%rax),%eax
  test   %al,%al
  je     L137
  cmp    $0xa,%al
  je     L137
L117:
  cmp    $0x23,%al
  jne    L62
  lea    D20(%rip),%rsi
  mov    %rbx,%rdi
  call   <strcspn@plt>
  cltq
  lea    (%rbx,%rax,1),%r12
  cmpb   $0xa,(%r12)
  je     L283
L109:
  test   %rbp,%rbp
  je     L266
  cs nopw 0x0(%rax,%rax,1)
L76:
  movb   $0x0,0x0(%rbp)
  movsbl -0x1(%rbp),%edi
  sub    $0x1,%rbp
  call   <isspace@plt>
  test   %rax,%rax
  jne    L76
  jmp    L266
  nopl   0x0(%rax,%rax,1)
L178:
  lea    D20(%rip),%rsi
  mov    %rbp,%rdi
  call   <strcspn@plt>
  movslq %eax,%rbx
  xor    %eax,%eax
  lea    0x0(%rbp,%rbx,1),%r12
  cmpb   $0xa,(%r12)
  sete   %al
  add    %rax,%r12
L266:
  add    $0x8,%rsp
  mov    %r12,%rax
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  ret
  nopw   0x0(%rax,%rax,1)
L82:
  add    $0x8,%rsp
  xor    %r12d,%r12d
  pop    %rbx
  mov    %r12,%rax
  pop    %rbp
  pop    %r12
  pop    %r13
  ret
L137:
  mov    (%r12),%rdx
  movzbl (%rdx),%eax
L220:
  cmp    $0x5c,%al
  je     L155
L219:
  lea    D20(%rip),%rsi
  mov    %rbx,%rdi
  call   <strcspn@plt>
  cltq
  lea    (%rbx,%rax,1),%r12
  cmpb   $0xa,(%r12)
  jne    L76
L283:
  add    $0x1,%r12
  jmp    L109
L155:
  add    $0x1,%rdx
  mov    %rdx,(%r12)
  jmp    L219
L314:
  mov    %rbx,%rdx
  jmp    L220
```

tool_calls: name: extract_symbolic_data
arguments: data_label: D20
data_type: string

tool: D20: 


assistant: ```c
char *hcfg_parse(char *buf, char **key, char **val) {
  char *ptr = NULL;
  *key = NULL;
  *val = NULL;
  while (isspace(*buf) && *buf != '\n')
    ++buf;
  if (*buf == '\n' || *buf == '#')
    goto endline;
  if (!isalnum(*buf) && *buf != '_')
    return NULL;
  *key = buf;
  while (isalnum(*buf) || *buf == '_') {
    *buf = toupper(*buf);
    ++buf;
  }
  ptr = buf;
  while (isspace(*buf) && *buf != '\n')
    ++buf;
  if (*(buf++) != '=')
    return NULL;
  while (isspace(*buf) && *buf != '\n')
    ++buf;
  while (ptr < buf)
    *(ptr++) = '\0';
  if (*buf == '\n' || *buf == '\0')
    goto endline;
  *val = buf;
  while (*buf && *buf != '\n') {
    if (*buf == '#')
      goto endline;
    if (*buf == '\\')
      ++buf;
    *(ptr++) = *(buf++);
  }
  if (**val == '\\')
    ++(*val);
endline:
  buf += strcspn(buf, "\n");
  if (*buf == '\n')
    ++buf;
  if (ptr) {
    do
      *(ptr--) = '\0';
    while (isspace(*ptr));
  }
  return buf;
}
```