> On Aug 14, 2015, at 8:36 AM, David Woodhouse <dw...@infradead.org> wrote: > > On Fri, 2015-08-14 at 08:13 -0700, Andrew Fish wrote: >> >> https://github.com/tianocore/edk2/blob/master/MdeModulePkg/MdeModulePkg.dsc >> [LibraryClasses.ARM, LibraryClasses.AARCH64] >> # >> # It is not possible to prevent ARM compiler calls to generic intrinsic >> functions. >> # This library provides the instrinsic functions generated by a given >> compiler. >> # [LibraryClasses.ARM] and NULL mean link this library into all ARM images. >> # >> NULL|ArmPkg/Library/CompilerIntrinsicsLib/CompilerIntrinsicsLib.inf >> >> It is not a full set of intrinsics, just what is needed for the edk2 coding >> standard. > > Thanks. I note that the ARM implementation of __umoddi3 is there, but > the IA32 version of the same function is in StdLib/LibC/CRT. Is there a > reason for that? >
Well the ARM Intrinsic lib started out so we did not have to change the rules of how to do math. I seem to remember some folks tried to port some existing code, and ended up adding some extra functions to round out simple 64-bit math. I also seem to remember that LLVM has these math function coded in C with a BSD compatible license if you need to find a new one. Thanks, Andrew Fish > -- > dwmw2 ------------------------------------------------------------------------------ _______________________________________________ edk2-devel mailing list edk2-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/edk2-devel
