回复: [edk2-devel] [PATCH 1/1] BaseTools/tools_def: drop -mgeneral-regs-only for AArch64 CLANGDWARF

["gaoliming via groups.io" <gaoliming=byosoft.com.cn@groups.io>]

Leif:
  Sure. This patch can be merged for this stable tag. 

Thanks
Liming
> -----邮件原件-----
> 发件人: devel@edk2.groups.io <devel@edk2.groups.io> 代表 Leif Lindholm
> 发送时间: 2023年11月7日 21:13
> 收件人: Yeping Song (QUIC) <quic_yepings@quicinc.com>;
> devel@edk2.groups.io; Liming Gao <gaoliming@byosoft.com.cn>
> 抄送: Rebecca Cran <rebecca@bsdio.com>; Bob Feng
> <bob.c.feng@intel.com>; Yuwei Chen <yuwei.chen@intel.com>; Ard
> Biesheuvel <ardb+tianocore@kernel.org>; Sami Mujawar
> <sami.mujawar@arm.com>; Kinney, Michael D <michael.d.kinney@intel.com>
> 主题: Re: [edk2-devel] [PATCH 1/1] BaseTools/tools_def: drop
> -mgeneral-regs-only for AArch64 CLANGDWARF
> 
> Liming,
> 
> You reviewed this patch before the stable tag. Am I OK to stage a github
> PR for this change?
> 
> Reviewed-by: Leif Lindholm <quic_llindhol@quicinc.com>
> 
> Regards,
> 
> Leif
> 
> On 2023-11-07 13:11, Yeping Song (QUIC) wrote:
> > Hi all,
> > I would like for this to be include in stable tag. Please help to review and
> merge this patch into stable release.
> > Thanks
> > Yepings
> >
> >
> > -----Original Message-----
> > From: devel@edk2.groups.io <devel@edk2.groups.io> On Behalf Of Yeping
> Song
> > Sent: Saturday, November 4, 2023 12:38 AM
> > To: devel@edk2.groups.io
> > Cc: Yeping Song (QUIC) <quic_yepings@quicinc.com>; Rebecca Cran
> <rebecca@bsdio.com>; Liming Gao <gaoliming@byosoft.com.cn>; Bob Feng
> <bob.c.feng@intel.com>; Yuwei Chen <yuwei.chen@intel.com>; Ard
> Biesheuvel <ardb+tianocore@kernel.org>; Leif Lindholm (QUIC)
> <quic_llindhol@quicinc.com>; Sami Mujawar <sami.mujawar@arm.com>
> > Subject: [edk2-devel] [PATCH 1/1] BaseTools/tools_def: drop
> -mgeneral-regs-only for AArch64 CLANGDWARF
> >
> > WARNING: This email originated from outside of Qualcomm. Please be wary
> of any links or attachments, and do not enable macros.
> >
> > Commit 0df6c8c157af9 ("BaseTools/tools_def AARCH64:
> > avoid SIMD registers in XIP code")
> > adds -mgeneral-regs-only to GCC_AARCH64_CC_XIPFLAGS, in order to avoid
> a bug present in certain versions of GCC.
> > This was never a problem for clang.
> > That's given the history of what the problem is.
> > Then we can describe how we fix it:
> > Change *_CLANGDWARF_AARCH64_CC_XIPFLAGS to set the required
> -mstrict-align option instead of importing the whole GCC variable.
> >
> > Signed-off-by: Yeping Song <quic_yepings@quicinc.com>
> > Cc: Rebecca Cran <rebecca@bsdio.com>
> > Cc: Liming Gao <gaoliming@byosoft.com.cn>
> > Cc: Bob Feng <bob.c.feng@intel.com>
> > Cc: Yuwei Chen <yuwei.chen@intel.com>
> > Cc: Ard Biesheuvel <ardb+tianocore@kernel.org>
> > Cc: Leif Lindholm <quic_llindhol@quicinc.com>
> > Cc: Sami Mujawar <sami.mujawar@arm.com>
> > ---
> >   BaseTools/Conf/tools_def.template | 2 +-
> >   1 file changed, 1 insertion(+), 1 deletion(-)
> >
> > diff --git a/BaseTools/Conf/tools_def.template
> b/BaseTools/Conf/tools_def.template
> > index 5bd5283655ea..c34ecfd557c5 100755
> > --- a/BaseTools/Conf/tools_def.template
> > +++ b/BaseTools/Conf/tools_def.template
> > @@ -2015,7 +2015,7 @@ DEFINE CLANGDWARF_AARCH64_DLINK_FLAGS
> = DEF(CLANGDWARF_AARCH64_TARGET) DEF(GCC_
> >   *_CLANGDWARF_AARCH64_RC_FLAGS       =
> DEF(GCC_AARCH64_RC_FLAGS) DEF(GCC_AARCH64_RC_BTI_FLAGS)
> >   *_CLANGDWARF_AARCH64_VFRPP_FLAGS    =
> DEF(GCC_VFRPP_FLAGS) DEF(CLANGDWARF_AARCH64_TARGET)
> $(PLATFORM_FLAGS)
> >   *_CLANGDWARF_AARCH64_ASLPP_FLAGS    =
> DEF(GCC_ASLPP_FLAGS) DEF(CLANGDWARF_AARCH64_TARGET)
> > -*_CLANGDWARF_AARCH64_CC_XIPFLAGS    =
> DEF(GCC_AARCH64_CC_XIPFLAGS)
> > +*_CLANGDWARF_AARCH64_CC_XIPFLAGS    = -mstrict-align
> >
> >     DEBUG_CLANGDWARF_AARCH64_CC_FLAGS    =
> DEF(CLANGDWARF_AARCH64_CC_FLAGS) $(PLATFORM_FLAGS) -flto -O1
> >     DEBUG_CLANGDWARF_AARCH64_DLINK_FLAGS =
> DEF(CLANGDWARF_AARCH64_DLINK_FLAGS) -flto -Wl,-O1 -fuse-ld=lld
> -L$(WORKSPACE)/ArmPkg/Library/GccLto -llto-aarch64
> -Wl,-plugin-opt=-pass-through=-llto-aarch64 -Wl,--no-pie,--no-relax
> > --
> > 2.25.1
> >
> >
> >
> >
> >
> >
> 
> 
> 
> 
> 





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