60 lines
1.4 KiB
C
60 lines
1.4 KiB
C
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#define MERGE2(x,y,z) x##_##y##_##z
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#define MERGE(x,y,z) MERGE2(x,y,z)
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#define FAILMERGE2(x,y) x##y
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#define FAILMERGE(x,y) FAILMERGE2(x,y)
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#define MAKESTRING2(x,y) #x#y
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#define MAKESTRING(x,y) MAKESTRING2(x,y)
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#define MAKESTRING2x(x) #x
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#define MAKESTRINGx(x) MAKESTRING2x(x)
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#define DLLNAME_STR MAKESTRING(_DLLNAME_,_DLLEXT_)
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#define APINAME_STR MAKESTRINGx(_APINAME_)
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#define THUNKPTR MERGE(_DLLNAME_, _APINAME_, Ptr)
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#define THUNKNAME MERGE(_DLLNAME_, _APINAME_, Thunk)
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#define FAILPTR FAILMERGE(GodotFail, _APINAME_)
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#define DIRECTAPI FAILMERGE(DirectCall_, _APINAME_)
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void __stdcall ResolveThunk(char *,
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char *,
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void (__stdcall **)(void),
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void (__stdcall *)(void),
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void (__stdcall *)(void));
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#define API_OVERRIDE FAILMERGE(Unicows_, _APINAME_)
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void (__stdcall *API_OVERRIDE)(void);
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void (__stdcall *THUNKPTR)(void);
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__declspec(naked)
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void
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__stdcall
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THUNKNAME (void)
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{
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ResolveThunk(DLLNAME_STR,
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APINAME_STR,
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&THUNKPTR,
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(void (__stdcall *)(void))API_OVERRIDE,
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(void (__stdcall *)(void))FAILPTR);
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__asm jmp THUNKPTR;
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}
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__declspec(naked)
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void
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__stdcall
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DIRECTAPI (void)
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{
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__asm jmp THUNKPTR;
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}
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#pragma data_seg(MAKESTRINGx(MERGE(.data$,_DLLNAME_,_APINAME_)))
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void (__stdcall *THUNKPTR)(void) = THUNKNAME;
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#pragma data_seg()
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