On Sep 5, 2013, at 11:47 AM, "Hamel, Lee M" <[email protected]> wrote:
> If you get this build error "unresolved external _memset in aLibrary.lib
> (aSource.obj)"
>
> It takes a bit of time to solve because the build log doesn’t provide a
> detailed clue. One way the issue can show up is when you are looping over an
> array and setting the array item to 0. The compiler decides to use its
> intrinsic function _memset to set the array memory block to 0 instead of
> setting each item to 0.
>
> Offending code
> Corrected code
> MyMemSet((UINT8 *) &myarray, 0, sizeof(myarray));
Is there a reason you could not use the
https://svn.code.sf.net/p/edk2/code/trunk/edk2/MdePkg/Include/Library/BaseMemoryLib.h
ZeroMem()?
> for (x = 0; x < MAX_X; x++) {
> for (y = 0; y < MAX_Y; y++) {
> myarray[x][y] = 0;
> } // y loop
> } // x loop
>
> You can track down the issue if you modify the library INF and add /FAcs
> build flag, e.g.
>
> [BuildOptions.common]
> MSFT:*_*_*_CC_FLAGS = /FAcs
>
> You can find where the compiler used its intrinsic function _memset as
> disassembly mixed with source code. View the file
>
> Build\YourPkg\<target>_<toolchain>\aPkg\Library\aLibrary\aLibrary\aSource.cod
> and search for _memset. The .cod file lists source line numbers to enable
> you to find where _memset is being used.
>
> ------------------------------------------------------------------------------
> Learn the latest--Visual Studio 2012, SharePoint 2013, SQL 2012, more!
> Discover the easy way to master current and previous Microsoft technologies
> and advance your career. Get an incredible 1,500+ hours of step-by-step
> tutorial videos with LearnDevNow. Subscribe today and save!
> http://pubads.g.doubleclick.net/gampad/clk?id=58041391&iu=/4140/ostg.clktrk_______________________________________________
> edk2-devel mailing list
> [email protected]
> https://lists.sourceforge.net/lists/listinfo/edk2-devel
------------------------------------------------------------------------------
Learn the latest--Visual Studio 2012, SharePoint 2013, SQL 2012, more!
Discover the easy way to master current and previous Microsoft technologies
and advance your career. Get an incredible 1,500+ hours of step-by-step
tutorial videos with LearnDevNow. Subscribe today and save!
http://pubads.g.doubleclick.net/gampad/clk?id=58041391&iu=/4140/ostg.clktrk
_______________________________________________
edk2-devel mailing list
[email protected]
https://lists.sourceforge.net/lists/listinfo/edk2-devel
