user: 请从给定的汇编指令推导出C源代码:

```asm
<main>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  sub    $0x40,%rsp
  mov    %edi,-0x34(%rbp)
  mov    %rsi,-0x40(%rbp)
  mov    %fs:0x28,%rax
  mov    %rax,-0x8(%rbp)
  xor    %eax,%eax
  lea    D66(%rip),%rax
  mov    %rax,-0x20(%rbp)
  lea    D107(%rip),%rax
  mov    %rax,%rdi
  call   <getenv@plt>
  mov    %rax,-0x18(%rbp)
  cmpq   $0x0,-0x18(%rbp)
  jne    L18
  mov    -0x20(%rbp),%rax
  mov    %rax,%rsi
  lea    D11(%rip),%rax
  mov    %rax,%rdi
  mov    $0x0,%eax
  call   <printf@plt>
  mov    $0x1,%edi
  call   <exit@plt>
L18:
  mov    -0x18(%rbp),%rdx
  mov    -0x20(%rbp),%rax
  mov    %rax,%rsi
  lea    D39(%rip),%rax
  mov    %rax,%rdi
  mov    $0x0,%eax
  call   <printf@plt>
  mov    -0x18(%rbp),%rax
  mov    %rax,%rdi
  call   <XOpenDisplay@plt>
  mov    %rax,-0x10(%rbp)
  cmpq   $0x0,-0x10(%rbp)
  jne    L45
  mov    -0x20(%rbp),%rax
  mov    %rax,%rsi
  lea    D127(%rip),%rax
  mov    %rax,%rdi
  mov    $0x0,%eax
  call   <printf@plt>
  mov    $0x1,%edi
  call   <exit@plt>
L45:
  lea    D67(%rip),%rax
  mov    %rax,-0x20(%rbp)
  lea    -0x24(%rbp),%rsi
  lea    -0x24(%rbp),%rcx
  lea    -0x24(%rbp),%rdx
  mov    -0x10(%rbp),%rax
  mov    %rsi,%r8
  lea    D114(%rip),%rsi
  mov    %rax,%rdi
  call   <XQueryExtension@plt>
  test   %eax,%eax
  jne    L34
  mov    -0x20(%rbp),%rax
  mov    %rax,%rsi
  lea    D53(%rip),%rax
  mov    %rax,%rdi
  mov    $0x0,%eax
  call   <printf@plt>
  mov    $0x1,%edi
  call   <exit@plt>
L34:
  mov    -0x20(%rbp),%rax
  mov    %rax,%rsi
  lea    D4(%rip),%rax
  mov    %rax,%rdi
  mov    $0x0,%eax
  call   <printf@plt>
  lea    D57(%rip),%rax
  mov    %rax,-0x20(%rbp)
  lea    -0x24(%rbp),%rsi
  lea    -0x24(%rbp),%rcx
  lea    -0x24(%rbp),%rdx
  mov    -0x10(%rbp),%rax
  mov    %rsi,%r8
  lea    D93(%rip),%rsi
  mov    %rax,%rdi
  call   <XQueryExtension@plt>
  test   %eax,%eax
  jne    L41
  mov    -0x20(%rbp),%rax
  mov    %rax,%rsi
  lea    D60(%rip),%rax
  mov    %rax,%rdi
  mov    $0x0,%eax
  call   <printf@plt>
  jmp    L55
L41:
  mov    -0x20(%rbp),%rax
  mov    %rax,%rsi
  lea    D4(%rip),%rax
  mov    %rax,%rdi
  mov    $0x0,%eax
  call   <printf@plt>
L55:
  mov    $0x0,%eax
  mov    -0x8(%rbp),%rdx
  sub    %fs:0x28,%rdx
  je     L29
  call   <__stack_chk_fail@plt>
L29:
  leave
  ret
```

tool_calls: name: extract_symbolic_data
arguments: tag: D66
type_guessed: string
name: extract_symbolic_data
arguments: tag: D107
type_guessed: string
name: extract_symbolic_data
arguments: tag: D11
type_guessed: string
name: extract_symbolic_data
arguments: tag: D39
type_guessed: string
name: extract_symbolic_data
arguments: tag: D127
type_guessed: string
name: extract_symbolic_data
arguments: tag: D67
type_guessed: string
name: extract_symbolic_data
arguments: tag: D114
type_guessed: string
name: extract_symbolic_data
arguments: tag: D53
type_guessed: string
name: extract_symbolic_data
arguments: tag: D4
type_guessed: string
name: extract_symbolic_data
arguments: tag: D57
type_guessed: string
name: extract_symbolic_data
arguments: tag: D93
type_guessed: string
name: extract_symbolic_data
arguments: tag: D60
type_guessed: string

tool: D66: X display

tool: D107: DISPLAY

tool: D11: fatal: %s:	DISPLAY not set


tool: D39: info:  %s:	%s


tool: D127: fatal: %s:	failed to open connection


tool: D67: X Ext. "GLX"

tool: D114: GLX

tool: D53: fatal: %s:	not present; see the Xorg log for details


tool: D4: info:  %s:	present


tool: D57: X Ext. "NV-GLX"

tool: D93: NV-GLX

tool: D60: info:  %s:	not present; OK for non-nVidia drivers


assistant: ```c
int main(int argc, char *argv[]) {
  const char *msg1 = "X display";
  char *dpyname = getenv("DISPLAY");
  if (!dpyname)
    ({
      printf("fatal: %s:\t"
             "DISPLAY not set"
             "\n",
             msg1);
      exit(1);
    });
  printf("info:  %s:\t"
         "%s"
         "\n",
         msg1, dpyname);
  Display *dpy = XOpenDisplay(dpyname);
  if (!dpy)
    ({
      printf("fatal: %s:\t"
             "failed to open connection"
             "\n",
             msg1);
      exit(1);
    });
  msg1 = "X Ext. \"GLX\"";
  int dummy;
  if (!XQueryExtension(dpy, "GLX", &dummy, &dummy, &dummy))
    ({
      printf("fatal: %s:\t"
             "not present; see the Xorg log for details"
             "\n",
             msg1);
      exit(1);
    });
  printf("info:  %s:\t"
         "present"
         "\n",
         msg1);
  msg1 = "X Ext. \"NV-GLX\"";
  if (!XQueryExtension(dpy, "NV-GLX", &dummy, &dummy, &dummy))
    printf("info:  %s:\t"
           "not present; OK for non-nVidia drivers"
           "\n",
           msg1);
  else
    printf("info:  %s:\t"
           "present"
           "\n",
           msg1);
  return 0;
}
```