C fastcall convention in FPC ?
lazarus / 67-Windows

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440bx · 2021-08-19 22:21

Hello,

I think I know the answer to the question I'm about to ask but,
figured I'd ask in case I missed something.

I would like to use this API: Code: C  [Select][+][-]window.onload =
function(){var x1 = document.getElementById("main_content_section");
if (x1) { var x = document.getElementsByClassName("geshi");for (var i
= 0; i PSLIST_ENTRY  FASTCALL InterlockedPushListSList(  _Inout_
PSLIST_HEADER ListHead,  _Inout_ PSLIST_ENTRY  List,  _Inout_
PSLIST_ENTRY  ListEnd,  _In_    ULONG         Count);The problem is,
it uses MS C's fastcall convention and I don't know if there is a way
to tell FPC to use that convention.

That's my question: is there a way to tell FPC to use MS C's fastcall
convention when calling a function ?

Thank you for your help.

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skalogryz · 2021-08-20 00:03

i guess you'll need to create an asm wrapper to make the call.
but if you target 64-bit you don't need to do anything.

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440bx · 2021-08-20 00:34

Quote from: skalogryz on August 20, 2021, 02:03:05 ami guess you'll
need to create an asm wrapper to make the call.
but if you target 64-bit you don't need to do anything.
That's what I thought.  Thank you Skalogryz

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PascalDragon · 2021-08-26 13:42

Quote from: 440bx on August 20, 2021, 12:21:39 amThat's my question:
is there a way to tell FPC to use MS C's fastcall convention when
calling a function ?

FPC does not support Microsoft's fastcall calling convention. Patches
welcome.