回复: [edk2-devel] [PATCH] MdeModulePkg: Fix undefined reference to memcpy with XCODE5
gaoliming
gaoliming at byosoft.com.cn
Wed Dec 2 00:52:39 UTC 2020
I agree this fix. We should use the pointer to structure as the function parameter.
Reviewed-by: Liming Gao <gaoliming at byosoft.com.cn>
Thanks
Liming
> -----邮件原件-----
> 发件人: bounce+27952+68148+4905953+8761045 at groups.io
> <bounce+27952+68148+4905953+8761045 at groups.io> 代表 Laszlo Ersek
> 发送时间: 2020年12月2日 4:39
> 收件人: devel at edk2.groups.io; cheptsov at ispras.ru
> 抄送: Jian J Wang <jian.j.wang at intel.com>; Hao A Wu
> <hao.a.wu at intel.com>; Jordan Justen <jordan.l.justen at intel.com>; Ard
> Biesheuvel <ard.biesheuvel at 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 at intel.com>
> > CC: Hao A Wu <hao.a.wu at intel.com>
> > CC: Jordan Justen <jordan.l.justen at intel.com>
> > CC: Laszlo Ersek <lersek at redhat.com>
> > CC: Ard Biesheuvel <ard.biesheuvel at arm.com>
> > Signed-off-by: Vitaly Cheptsov <cheptsov at 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);
> >
>
>
>
>
>
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