Topic created on: July 26, 2008 20:51 CDT by yinwenjiansusie .

In the IDA SDK,there is a header file----typeinfo.hpp.I find that a lot of functions and structures has mentioned the structure "til_t". In this file it is explained as type information library.
there are two structure in the file "typeinfo.hpp":
struct funcarg_info_t
{
  argloc_t argloc;      // argument location (stack offset or register if ARGLOC_REG)
  qstring name;         // argument name (might be empty)
  qtype type;           // argument type
  qtype fields;         // argument field names (used for local structure types)
};

struct func_type_info_t : public qvector<funcarg_info_t>
{
  int flags;
#define FTI_SPOILED 0x0001 // __spoils information is present
  qtype rettype;        // return type
  qtype retfields;      // return type field names (if structure)
  argloc_t retloc;      // return location
  uval_t stkargs;       // size of stack arguments
  reginfovec_t spoiled; // spoiled register information
                        // if spoiled register info is present, it overrides
                        // the standard spoil info (eax, edx, ecx for x86)
  cm_t cc;              // calling convention
  type_t basetype;      // function base type (the first byte of the type)
};

as we see,maybe it can get all the function type infomation. But the problem is some functions gained from the file such as build_funcarg_info(...),get_func_rettype(...), has the parameter " til_t *til". How can I related the " til_t *til" with the function type?
thanks for any hint!