user: 请从给定的汇编指令推导出C源代码:

```asm
<usage>:
  endbr64
  sub    $0x8,%rsp
  lea    D4(%rip),%rdi
  call   <printf@plt>
  mov    $0x0,%eax
  add    $0x8,%rsp
  ret
```

tool_calls: name: parse_data
arguments: tag: D4
data_type: string

tool: {"D4": "Usage: $0 [command] [options] \n\nScript to manipulate the XML-configuration data of GuF i.MX Boards\ninside the NAND Flash. \n\nxconfig expect one of the following commands to define its behavior: \n  list           show the current contents of the XML-configuration as\n                 obtained from NAND\n  import         import an external XML-configuration file into the NAND\n                 Flash\n  addnode        add a new (empty) XML node\n  delnode        delete XML node(s) and its/their children\n  addattribute   add a new or change an existing attribute\n  delattribute   delete an existing attribute\nIf no command and option given xconfig will display its version and exit.\n\nSyntax:\n  xconfig list [-v] [-f] [-p <path>] \n    -v           show whole (sub)tree instead of summary, the format is\n\t             suitable to be used as input to \"xconfig import\"\n\t-f           by default xconfig operates on the <variables>-subtree\n\t             only, this option switches to the <flash>-subtree\n\t\t\t\t defining the NAND partitions\n\t\t\t\t *strongly discouraged* - Use the \"fis\" commands instead\n\t-p <path>    path to subtree, e.g.:\n\t    -p /configurationFile/variables/setting[@key='enable_serialdiag]\n\t\t         if omitted, the whole tree is shown\n  xconfig import [-v] [-f] [-y] [-b <addr>]\n    -v           be verbose\n\t-f           same as above\n\t-y           assume yes - apply changes without user interaction\n\t-b <addr>    path to file to import\n  xconfig addnode [-f] [-y] -p <path> -n <name>\n\t-f           same as above\n\t-y           same as above\n\t-p <path>    path to parent node\n\t-n <name>    name of new node\n  xconfig delnode [-f] [-y] -p <path>\n\t-f           same as above\n\t-y           same as above\n\t-p <path>    path to node\n  xconfig addattribute [-f] [-y] -p <path> -n <attr-name> -v <value>\n\t-f           same as above\n\t-y           same as above\n\t-p <path>    path to parent node\n\t-n <attr-name>   name of the attribute\n\t-v <value>   new value of attribute\n  xconfig delattribute [-f] [-y] -p <path> -n <attr-name>\n\t-f           same as above\n\t-y           same as above\n\t-p <path>    path to parent node\n\t-n <attr-name>   name of the attribute\n"}

assistant: ```c
int usage() {
  printf("Usage: $0 [command] [options] \n"
         "\n"
         "Script to manipulate the XML-configuration data of GuF i.MX Boards\n"
         "inside the NAND Flash. \n"
         "\n"
         "xconfig expect one of the following commands to define its behavior: \n"
         "  list           show the current contents of the XML-configuration as\n"
         "                 obtained from NAND\n"
         "  import         import an external XML-configuration file into the NAND\n"
         "                 Flash\n"
         "  addnode        add a new (empty) XML node\n"
         "  delnode        delete XML node(s) and its/their children\n"
         "  addattribute   add a new or change an existing attribute\n"
         "  delattribute   delete an existing attribute\n"
         "If no command and option given xconfig will display its version and exit.\n"
         "\n"
         "Syntax:\n"
         "  xconfig list [-v] [-f] [-p <path>] \n"
         "    -v           show whole (sub)tree instead of summary, the format is\n"
         "	             suitable to be used as input to \"xconfig import\"\n"
         "	-f           by default xconfig operates on the <variables>-subtree\n"
         "	             only, this option switches to the <flash>-subtree\n"
         "				 defining the NAND partitions\n"
         "				 *strongly discouraged* - Use the \"fis\" commands instead\n"
         "	-p <path>    path to subtree, e.g.:\n"
         "	    -p /configurationFile/variables/setting[@key='enable_serialdiag]\n"
         "		         if omitted, the whole tree is shown\n"
         "  xconfig import [-v] [-f] [-y] [-b <addr>]\n"
         "    -v           be verbose\n"
         "	-f           same as above\n"
         "	-y           assume yes - apply changes without user interaction\n"
         "	-b <addr>    path to file to import\n"
         "  xconfig addnode [-f] [-y] -p <path> -n <name>\n"
         "	-f           same as above\n"
         "	-y           same as above\n"
         "	-p <path>    path to parent node\n"
         "	-n <name>    name of new node\n"
         "  xconfig delnode [-f] [-y] -p <path>\n"
         "	-f           same as above\n"
         "	-y           same as above\n"
         "	-p <path>    path to node\n"
         "  xconfig addattribute [-f] [-y] -p <path> -n <attr-name> -v <value>\n"
         "	-f           same as above\n"
         "	-y           same as above\n"
         "	-p <path>    path to parent node\n"
         "	-n <attr-name>   name of the attribute\n"
         "	-v <value>   new value of attribute\n"
         "  xconfig delattribute [-f] [-y] -p <path> -n <attr-name>\n"
         "	-f           same as above\n"
         "	-y           same as above\n"
         "	-p <path>    path to parent node\n"
         "	-n <attr-name>   name of the attribute\n");
  return 0;
}
```