user: 请显示与下面列出的汇编代码相匹配的C语言实现：

```asm
<_start>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  sub    $0x40,%rsp
  mov    %fs:0x28,%rax
  mov    %rax,-0x8(%rbp)
  xor    %eax,%eax
  lea    D78(%rip),%rax
  mov    %rax,%rdi
  call   <print@plt>
  lea    D65(%rip),%rax
  mov    %rax,%rdi
  call   <print@plt>
  lea    -0x30(%rbp),%rax
  mov    %rax,%rdi
  call   <sysinfo@plt>
  mov    %eax,-0x3c(%rbp)
  cmpl   $0x0,-0x3c(%rbp)
  jns    L6
  lea    D76(%rip),%rax
  mov    %rax,%rdi
  call   <print@plt>
  lea    D52(%rip),%rax
  mov    %rax,%rdi
  call   <print@plt>
  mov    -0x3c(%rbp),%eax
  mov    %eax,%edi
  call   <_exit@plt>
L6:
  mov    -0x30(%rbp),%rax
  mov    -0x28(%rbp),%rdx
  sub    %rdx,%rax
  mov    -0x20(%rbp),%rdx
  sub    %rdx,%rax
  mov    %rax,-0x38(%rbp)
  mov    -0x18(%rbp),%edx
  mov    -0x38(%rbp),%rax
  mov    %rax,%rsi
  lea    D5(%rip),%rax
  mov    %rax,%rdi
  call   <print_k_value@plt>
  lea    D62(%rip),%rax
  mov    %rax,%rdi
  call   <print@plt>
  mov    -0x18(%rbp),%edx
  mov    -0x30(%rbp),%rax
  mov    %rax,%rsi
  lea    D14(%rip),%rax
  mov    %rax,%rdi
  call   <print_k_value@plt>
  mov    -0x18(%rbp),%edx
  mov    -0x28(%rbp),%rax
  mov    %rax,%rsi
  lea    D4(%rip),%rax
  mov    %rax,%rdi
  call   <print_k_value@plt>
  mov    -0x18(%rbp),%edx
  mov    -0x20(%rbp),%rax
  mov    %rax,%rsi
  lea    D71(%rip),%rax
  mov    %rax,%rdi
  call   <print_k_value@plt>
  mov    -0x18(%rbp),%edx
  mov    -0x38(%rbp),%rax
  mov    %rax,%rsi
  lea    D48(%rip),%rax
  mov    %rax,%rdi
  call   <print_k_value@plt>
  mov    $0x0,%edi
  call   <_exit@plt>
  nop
  mov    -0x8(%rbp),%rax
  sub    %fs:0x28,%rax
  je     L7
  call   <__stack_chk_fail@plt>
L7:
  leave
  ret
```

tool_calls: name: extract_symbolic_data
arguments: data_tag: D78
datatype: string
name: extract_symbolic_data
arguments: data_tag: D65
datatype: string
name: extract_symbolic_data
arguments: data_tag: D76
datatype: string
name: extract_symbolic_data
arguments: data_tag: D52
datatype: string
name: extract_symbolic_data
arguments: data_tag: D5
datatype: string
name: extract_symbolic_data
arguments: data_tag: D62
datatype: string
name: extract_symbolic_data
arguments: data_tag: D14
datatype: string
name: extract_symbolic_data
arguments: data_tag: D4
datatype: string
name: extract_symbolic_data
arguments: data_tag: D71
datatype: string
name: extract_symbolic_data
arguments: data_tag: D48
datatype: string

tool: D78: Testing system size.


tool: D65: 1..1


tool: D76: not ok 1 get runtime memory use


tool: D52: # could not get sysinfo


tool: D5: ok 1 get runtime memory use # size = 

tool: D62: # System runtime memory report (units in Kilobytes):


tool: D14: #   Total:  

tool: D4: #   Free:   

tool: D71: #   Buffer: 

tool: D48: #   In use: 

assistant: ```c
void _start(void) {
  int ccode;
  struct sysinfo info;
  unsigned long used;
  print("Testing system size.\n");
  print("1..1\n");
  ccode = sysinfo(&info);
  if (ccode < 0) {
    print("not ok 1 get runtime memory use\n");
    print("# could not get sysinfo\n");
    _exit(ccode);
  }
  used = info.totalram - info.freeram - info.bufferram;
  print_k_value("ok 1 get runtime memory use # size = ", used, info.mem_unit);
  print("# System runtime memory report (units in Kilobytes):\n");
  print_k_value("#   Total:  ", info.totalram, info.mem_unit);
  print_k_value("#   Free:   ", info.freeram, info.mem_unit);
  print_k_value("#   Buffer: ", info.bufferram, info.mem_unit);
  print_k_value("#   In use: ", used, info.mem_unit);
  _exit(0);
}
```