user: 下面的汇编指令对应的C源代码是什么:

```asm
<l_str2subst>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  sub    $0x50,%rsp
  mov    %edi,%eax
  mov    %esi,-0x38(%rbp)
  mov    %rdx,-0x40(%rbp)
  mov    %rcx,-0x48(%rbp)
  mov    %r8,-0x50(%rbp)
  mov    %al,-0x34(%rbp)
  mov    %fs:0x28,%rax
  mov    %rax,-0x8(%rbp)
  xor    %eax,%eax
  movl   $0x0,-0x28(%rbp)
  mov    -0x38(%rbp),%eax
  add    $0x2,%eax
  mov    %eax,-0x24(%rbp)
  cmpl   $0x0,-0x38(%rbp)
  jg     L107
  mov    $0xffffffed,%eax
  jmp    L212
L107:
  mov    -0x24(%rbp),%eax
  mov    $0x1,%esi
  mov    %eax,%edi
  call   <calloc@plt>
  mov    %rax,-0x20(%rbp)
  cmpq   $0x0,-0x20(%rbp)
  jne    L36
  mov    $0xfffffffd,%eax
  jmp    L212
L36:
  addl   $0x1,-0x28(%rbp)
  mov    -0x28(%rbp),%eax
  cmp    -0x38(%rbp),%eax
  jg     L33
  movsbl -0x34(%rbp),%eax
  lea    -0x14(%rbp),%rdx
  mov    -0x40(%rbp),%rsi
  mov    $0xc,%ecx
  mov    %eax,%edi
  call   <l_nextToken@plt>
  mov    %rax,-0x40(%rbp)
  lea    -0x2c(%rbp),%rdx
  lea    -0x14(%rbp),%rax
  lea    D6(%rip),%rcx
  mov    %rcx,%rsi
  mov    %rax,%rdi
  call   <sscanf@plt>
  cmp    $0x1,%eax
  je     L163
  movl   $0xffffffff,-0x28(%rbp)
  jmp    L10
L163:
  mov    -0x2c(%rbp),%eax
  test   %eax,%eax
  jns    L210
  mov    -0x2c(%rbp),%eax
  neg    %eax
  mov    %eax,-0x2c(%rbp)
  cmpq   $0x0,-0x50(%rbp)
  je     L77
  mov    -0x28(%rbp),%eax
  movslq %eax,%rdx
  mov    -0x50(%rbp),%rax
  add    %rdx,%rax
  movb   $0xff,(%rax)
  jmp    L77
L210:
  cmpq   $0x0,-0x50(%rbp)
  je     L77
  mov    -0x28(%rbp),%eax
  movslq %eax,%rdx
  mov    -0x50(%rbp),%rax
  add    %rdx,%rax
  movb   $0x1,(%rax)
L77:
  mov    -0x2c(%rbp),%eax
  cmp    %eax,-0x38(%rbp)
  jl     L130
  mov    -0x2c(%rbp),%eax
  test   %eax,%eax
  jne    L7
L130:
  movl   $0xffffffff,-0x28(%rbp)
  jmp    L10
L7:
  mov    -0x2c(%rbp),%edx
  mov    -0x28(%rbp),%eax
  movslq %eax,%rcx
  mov    -0x48(%rbp),%rax
  add    %rcx,%rax
  mov    %dl,(%rax)
  movzbl (%rax),%eax
  movsbq %al,%rdx
  mov    -0x20(%rbp),%rax
  add    %rdx,%rax
  movzbl (%rax),%edx
  add    $0x1,%edx
  mov    %dl,(%rax)
  cmpq   $0x0,-0x40(%rbp)
  jne    L36
  jmp    L10
L33:
  nop
L10:
  mov    -0x28(%rbp),%eax
  cmp    -0x38(%rbp),%eax
  jne    L103
  movl   $0x1,-0x28(%rbp)
  jmp    L151
L213:
  mov    -0x28(%rbp),%eax
  movslq %eax,%rdx
  mov    -0x20(%rbp),%rax
  add    %rdx,%rax
  movzbl (%rax),%eax
  cmp    $0x1,%al
  je     L1
  mov    -0x38(%rbp),%eax
  add    $0x2,%eax
  mov    %eax,-0x28(%rbp)
L1:
  addl   $0x1,-0x28(%rbp)
L151:
  mov    -0x28(%rbp),%eax
  cmp    -0x38(%rbp),%eax
  jle    L213
  subl   $0x1,-0x28(%rbp)
L103:
  mov    -0x20(%rbp),%rax
  mov    %rax,%rdi
  call   <free@plt>
  mov    -0x28(%rbp),%eax
  cmp    -0x38(%rbp),%eax
  je     L8
  mov    $0xffffffed,%eax
  jmp    L212
L8:
  mov    $0x0,%eax
L212:
  mov    -0x8(%rbp),%rdx
  sub    %fs:0x28,%rdx
  je     L140
  call   <__stack_chk_fail@plt>
L140:
  leave
  ret
```

tool_calls: name: extract_symbolic_data
arguments: data_label: D6
type: string

tool: D6: %d

assistant: ```c
int l_str2subst(char sep, int max, char *str, char *subst, char *dir) {
  char buf[12];
  char *ch;
  int itmp, i = 0, mmax = max + 2;
  if (!(max > 0))
    return -19;
  if ((ch = calloc(mmax, sizeof(char))) == NULL)
    return -3;
  do {
    if (++i > max)
      break;
    str = l_nextToken(sep, str, buf, 12);
    if (sscanf(buf, "%d", &itmp) != 1) {
      i = -1;
      break;
    }
    if (itmp < 0) {
      itmp = -itmp;
      if (dir != NULL)
        dir[i] = -1;
    } else {
      if (dir != NULL)
        dir[i] = 1;
    }
    if ((itmp > max) || (itmp == 0)) {
      i = -1;
      break;
    }
    ch[subst[i] = itmp]++;
  } while (str != NULL);
  if (i == max) {
    for (i = 1; !(i > max); i++)
      if (ch[i] != 1)
        i = max + 2;
    i--;
  }
  free(ch);
  if (i != max)
    return -19;
  return 0;
}
```