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#ifndef ___SYSTEM__H___
#define ___SYSTEM__H___
// The following ifdef block is the standard way of creating macros which make exporting
// from a DLL simpler. All files within this DLL are compiled with the SYSTEM_EXPORTS
// symbol defined on the command line. this symbol should not be defined on any project
// that uses this DLL. This way any other project whose source files include this file see
// SYSTEM_API functions as being imported from a DLL, whereas this DLL sees symbols
// defined with this macro as being exported.
#ifdef SYSTEM_EXPORTS
#define SYSTEM_API __declspec(dllexport)
#else
#define SYSTEM_API __declspec(dllimport)
#endif
#define NEW_STACK_SIZE 256*256
// Proc types:
#define PT_NOTHING 0
#define PT_PROC 1
#define PT_STRUCT 2
#define PT_VTABLEPROC 3
// Proc results:
#define PR_OK 0
#define PR_ERROR -1
#define PR_CALLBACK 1
// Real world argument types
#define PAT_VOID 0
#define PAT_INT 1
#define PAT_LONG 2
#define PAT_STRING 3
#define PAT_WSTRING 4
#define PAT_GUID 5
#define PAT_CALLBACK 6
// Input/Output Source/Destination
#define IOT_NONE 0
#define IOT_STACK -1
#define IOT_REG 1
#define IOT_INLINE (__INST_LAST+1) // should replace pointer to inline input
// #define INLINE_INPUT -> any other value, will contain pointer to input string
// Options
#define POPT_CDECL 0x1 // (Option & 0x1) == 0x1 -> cdecl, otherwise stdcall
#define POPT_PERMANENT 0x2 // Permanent proc, will not be destroyed after calling
#define POPT_ALWRETURN 0x4 // Always return
#define POPT_NEVERREDEF 0x8 // Never redefine
#define POPT_GENSTACK 0x10 // Use general stack (non temporary for callback)
#define POPT_ERROR 0x20 // Call GetLastError after proc and push it to stack
#define POPT_UNLOAD 0x40 // unload dll after call
#define POPT_CLONE 0x80 // This is clone callback
// Our single proc parameter
typedef struct
{
int Type;
int Option; // -1 -> Pointer, 1-... -> Special+1
// if you'll change ProcParameter or SystemProc structure - update this value
#define SYSTEM_ZERO_PARAM_VALUE_OFFSET 0x820
int Value; // it can hold any 4 byte value
int _value; // value buffer for structures > 4 bytes (I hope 8 bytes will be enough)
int Size; // Value real size (should be either 1 or 2 (the number of pushes))
int Input;
int Output;
HGLOBAL allocatedBlock; // block allocated for passing string, wstring or guid param
} ProcParameter;
// Our single proc (Since the user will free proc with GlobalFree,
// I've declared all variables as statics)
typedef struct tag_SystemProc SystemProc;
struct tag_SystemProc
{
int ProcType;
int ProcResult;
char DllName[1024];
char ProcName[1024];
HANDLE Dll;
HANDLE Proc;
int Options;
int ParamCount;
// if you'll change ProcParameter or SystemProc structure - update SYSTEM_ZERO_PARAM_VALUE_OFFSET value
ProcParameter Params[100]; // I hope nobody will use more than 100 params
// Callback specific
int CallbackIndex;
int ArgsSize;
// Clone of current element (used for multi-level callbacks)
SystemProc *Clone;
};
extern const int ParamSizeByType[]; // Size of every parameter type (*4 bytes)
extern HANDLE CreateCallback(SystemProc *cbproc);
extern SystemProc *PrepareProc(BOOL NeedForCall);
extern void ParamAllocate(SystemProc *proc);
extern void ParamsDeAllocate(SystemProc *proc);
extern void ParamsIn(SystemProc *proc);
extern void ParamsOut(SystemProc *proc);
extern SystemProc *CallProc(SystemProc *proc);
extern SystemProc *CallBack(SystemProc *proc);
extern SystemProc *RealCallBack();
extern void CallStruct(SystemProc *proc);
#endif
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