Ø I previously reported that GCC46 (namely 4.6) has a bug with this conventions and should be used with the follow definition
Ø DEFINE GCC46_X64_CC_FLAGS = DEF(GCC45_X64_CC_FLAGS) -Wno- unused-but-set-variable -mabi=ms I reported this too: http://sourceforge.net/apps/trac/edk2/ticket/590 From: Sergey Isakov [mailto:isakov...@bk.ru] Sent: Friday, March 22, 2013 8:06 AM To: edk2-devel@lists.sourceforge.net Subject: Re: [edk2] [edk2-buildtools] UEFI function is broken when compiled by GCC Hi, I previously reported that GCC46 (namely 4.6) has a bug with this conventions and should be used with the follow definition DEFINE GCC46_X64_CC_FLAGS = DEF(GCC45_X64_CC_FLAGS) -Wno-unused- but-set-variable -mabi=ms Hope it helps, Sergey 21.03.2013, в 20:23, Andrew Fish написал(а): Tomer, It is a bug in your code. You need to use the correct function prototypes, and you especially need to use EFIAPI correctly. This is bad: (EFI_AP_PROCEDURE)GetThread, You need to make GetThead() have the proper prototype. For GCC 4.6 the generic calling convention is the Unix ABI for X64. This means the 1st 6 args are passed in registers and the register sequence is different than the 4 register used in EFIABI (Microsoft X64 ABI subset). GCC only generates EFIABI if the function has the EFIABI qualifier in its definition. So any indirect function call needs to have EFIABI. Thus any protocol member function, pointer to function, EFI Event function, and function passed via an API needs to have the EFIABI qualifier. Also any assembly code C function prototype needs to have EFIABI so it gets called correctly. Andrew Fish On Mar 21, 2013, at 2:36 AM, "Shalev, Tomer" <tomer.sha...@intel.com> wrote: Hi There, Calls to StartupThisAP() does not work as expected when I build my UEFI application from GCC 4.6 under Linux. If I build it under Windows using Visual Studio 2010, it works… In GCC built application, The GetThread application receives a different value in its argument list than expected, according to what was passed to StartupThisAP(). I actually get 1, 4 and 5 for Ap's 1, 2 and 3, respectively, which might indicate that I get their APIC ID numbers. I suspect there are other functionality that doesn't work as expected in such situation, such as Int86(). I would be thankful if you can help me with this. Attached is a sample application that works when compiled in Windows but fails when compiled by GCC in Linux. Password is 12345678 Thanks, Tomer <MpTestPkg.zip> --------------------------------------------------------------------- Intel Israel (74) Limited This e-mail and any attachments may contain confidential material for the sole use of the intended recipient(s). Any review or distribution by others is strictly prohibited. If you are not the intended recipient, please contact the sender and delete all copies. ---------------------------------------------------------------------------- -- Everyone hates slow websites. So do we. Make your web apps faster with AppDynamics Download AppDynamics Lite for free today: <http://p.sf.net/sfu/appdyn_d2d_mar_________________________________________ ______> http://p.sf.net/sfu/appdyn_d2d_mar__________________________________________ _____ edk2-buildtools-devel mailing list <mailto:edk2-buildtools-de...@lists.sourceforge.net> edk2-buildtools- de...@lists.sourceforge.net <https://lists.sourceforge.net/lists/listinfo/edk2-buildtools-devel> https://lists.sourceforge.net/lists/listinfo/edk2-buildtools-devel ---------------------------------------------------------------------------- -- Everyone hates slow websites. So do we. Make your web apps faster with AppDynamics Download AppDynamics Lite for free today: http://p.sf.net/sfu/appdyn_d2d_mar__________________________________________ _____ edk2-devel mailing list edk2-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/edk2-devel
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