Hi, At April-08-11, 3:56 AM, Vlad Khorsun wrote:
>> And, I've just learned that the new >> Delphi 64-bit compiler(hopefully released later this year) will only >> use fastcall for DLL interfaces(even Microsoft has that same >> restriction for 64-bit). > Where can i read about it ? Because i doubt fastcall is *only* supported > calling convention in Win64. Moreover, in COM. According to MSDN __fastcall > is MS-specific while COM have more wide scope. So, there is no possibility to > use anything else then stdcall in IUnknown despite of 32\64 bitness. https://forums.codegear.com/thread.jspa?threadID=52117 http://msdn.microsoft.com/en-us/library/ms235286.aspx http://www.embarcadero.com/products/delphi/64-bit (Here it is mentioned in the video presentation that only one calling convention will be supported in 64-bit, but unfortunately doesn't specifically mention which one. Which is where the speculation of fastcall/register originates, as mentioned in the Delphi forum thread, most likely because of the MSDN documentation.) And, here's another document that I found: http://www.agner.org/optimize/calling_conventions.pdf Look on page 16, in the paragraph starting with "Calling convention", the last line refers to 64-bit mode. > Delphi used "fastcall" as default calling convention for class methods for > a very long time and this is not new and not related to the x64. It is named > "register" in Delphi Help. Probably new marketing department decided to > rename good old "register" by new cool "fastcall" in still not released Delphi > x64 compiler :) > Am i wrong ? You are correct, it is "register" in Delphi, which looks to be the same as "fastcall" in C++, after reading the documentation. -- Best regards, Daniel Rail Senior Software Developer ACCRA Solutions Inc. (www.accra.ca) ACCRA Med Software Inc. (www.filopto.com) ------------------------------------------------------------------------------ Xperia(TM) PLAY It's a major breakthrough. An authentic gaming smartphone on the nation's most reliable network. And it wants your games. http://p.sf.net/sfu/verizon-sfdev Firebird-Devel mailing list, web interface at https://lists.sourceforge.net/lists/listinfo/firebird-devel
