回复: [edk2-devel] [PATCH] MdeModulePkg: Fix undefined reference to memcpy with XCODE5

["gaoliming" <gaoliming@byosoft.com.cn>]

I agree this fix. We should use the pointer to structure as the function parameter. 

Reviewed-by: Liming Gao <gaoliming@byosoft.com.cn>

Thanks
Liming
> -----邮件原件-----
> 发件人: bounce+27952+68148+4905953+8761045@groups.io
> <bounce+27952+68148+4905953+8761045@groups.io> 代表 Laszlo Ersek
> 发送时间: 2020年12月2日 4:39
> 收件人: devel@edk2.groups.io; cheptsov@ispras.ru
> 抄送: Jian J Wang <jian.j.wang@intel.com>; Hao A Wu
> <hao.a.wu@intel.com>; Jordan Justen <jordan.l.justen@intel.com>; Ard
> Biesheuvel <ard.biesheuvel@arm.com>
> 主题: Re: [edk2-devel] [PATCH] MdeModulePkg: Fix undefined reference to
> memcpy with XCODE5
> 
> On 12/01/20 19:26, Vitaly Cheptsov wrote:
> > REF: https://bugzilla.tianocore.org/show_bug.cgi?id=3098
> >
> > XCODE5 toolchain in NOOPT mode generates memcpy when trying
> > to copy PEI_CORE_FV_HANDLE structure. This breaks OVMF
> > compilation with XCODE5.
> >
> > CC: Jian J Wang <jian.j.wang@intel.com>
> > CC: Hao A Wu <hao.a.wu@intel.com>
> > CC: Jordan Justen <jordan.l.justen@intel.com>
> > CC: Laszlo Ersek <lersek@redhat.com>
> > CC: Ard Biesheuvel <ard.biesheuvel@arm.com>
> > Signed-off-by: Vitaly Cheptsov <cheptsov@ispras.ru>
> > ---
> >  MdeModulePkg/Core/Pei/Dispatcher/Dispatcher.c |  4 ++--
> >  MdeModulePkg/Core/Pei/PeiMain.h               |  2 +-
> >  MdeModulePkg/Core/Pei/Ppi/Ppi.c               | 10 +++++-----
> >  3 files changed, 8 insertions(+), 8 deletions(-)
> >
> > diff --git a/MdeModulePkg/Core/Pei/Dispatcher/Dispatcher.c
> b/MdeModulePkg/Core/Pei/Dispatcher/Dispatcher.c
> > index b9a279e..3369585 100644
> > --- a/MdeModulePkg/Core/Pei/Dispatcher/Dispatcher.c
> > +++ b/MdeModulePkg/Core/Pei/Dispatcher/Dispatcher.c
> > @@ -1256,13 +1256,13 @@ EvacuateTempRam (
> >    }
> >    for (FvIndex = 0; FvIndex < Private->FvCount; FvIndex++) {
> >      if (Private->Fv[FvIndex].FvHandle == PeiCoreFvHandle.FvHandle) {
> > -      PeiCoreFvHandle = Private->Fv[FvIndex];
> > +      CopyMem (&PeiCoreFvHandle, &Private->Fv[FvIndex], sizeof
> (PEI_CORE_FV_HANDLE));
> >        break;
> >      }
> >    }
> >    Status = EFI_SUCCESS;
> 
> I'm too tired to review this patch now (hello MdeModulePkg reviewers),
> but the idea is correct -- "PeiCoreFvHandle" has type
> PEI_CORE_FV_HANDLE, from "MdeModulePkg/Core/Pei/PeiMain.h", and it is
> a
> structure type. Structure assignment is indeed not allowed in edk2.
> 
> Thanks
> Laszlo
> 
> >
> > -  ConvertPeiCorePpiPointers (Private, PeiCoreFvHandle);
> > +  ConvertPeiCorePpiPointers (Private, &PeiCoreFvHandle);
> >
> >    for (FvIndex = 0; FvIndex < Private->FvCount; FvIndex++) {
> >      FvHeader = Private->Fv[FvIndex].FvHeader;
> > diff --git a/MdeModulePkg/Core/Pei/PeiMain.h
> b/MdeModulePkg/Core/Pei/PeiMain.h
> > index c27e8fc..daa48b4 100644
> > --- a/MdeModulePkg/Core/Pei/PeiMain.h
> > +++ b/MdeModulePkg/Core/Pei/PeiMain.h
> > @@ -542,7 +542,7 @@ ConvertPpiPointersFv (
> >  VOID
> >  ConvertPeiCorePpiPointers (
> >    IN  PEI_CORE_INSTANCE        *PrivateData,
> > -  PEI_CORE_FV_HANDLE           CoreFvHandle
> > +  IN  PEI_CORE_FV_HANDLE       *CoreFvHandle
> >    );
> >
> >  /**
> > diff --git a/MdeModulePkg/Core/Pei/Ppi/Ppi.c
> b/MdeModulePkg/Core/Pei/Ppi/Ppi.c
> > index 541047d..0ad71d1 100644
> > --- a/MdeModulePkg/Core/Pei/Ppi/Ppi.c
> > +++ b/MdeModulePkg/Core/Pei/Ppi/Ppi.c
> > @@ -1062,7 +1062,7 @@ ProcessPpiListFromSec (
> >  VOID
> >  ConvertPeiCorePpiPointers (
> >    IN  PEI_CORE_INSTANCE        *PrivateData,
> > -  PEI_CORE_FV_HANDLE           CoreFvHandle
> > +  IN  PEI_CORE_FV_HANDLE       *CoreFvHandle
> >    )
> >  {
> >    EFI_FV_FILE_INFO      FileInfo;
> > @@ -1079,16 +1079,16 @@ ConvertPeiCorePpiPointers (
> >    //
> >    // Find the PEI Core in the BFV in temporary memory.
> >    //
> > -  Status =  CoreFvHandle.FvPpi->FindFileByType (
> > -                                  CoreFvHandle.FvPpi,
> > +  Status =  CoreFvHandle->FvPpi->FindFileByType (
> > +                                  CoreFvHandle->FvPpi,
> >                                    EFI_FV_FILETYPE_PEI_CORE,
> > -                                  CoreFvHandle.FvHandle,
> > +                                  CoreFvHandle->FvHandle,
> >                                    &PeiCoreFileHandle
> >                                    );
> >    ASSERT_EFI_ERROR (Status);
> >
> >    if (!EFI_ERROR (Status)) {
> > -    Status = CoreFvHandle.FvPpi->GetFileInfo (CoreFvHandle.FvPpi,
> PeiCoreFileHandle, &FileInfo);
> > +    Status = CoreFvHandle->FvPpi->GetFileInfo (CoreFvHandle->FvPpi,
> PeiCoreFileHandle, &FileInfo);
> >      ASSERT_EFI_ERROR (Status);
> >
> >      Status = PeiGetPe32Data (PeiCoreFileHandle, &PeiCoreImageBase);
> >
> 
> 
> 
> 
>