Re: [PATCH 0/3] Arm builds on Visual Studio

["Liming Gao" <liming.gao@intel.com>]

Leif:
  For this special case of the single patch to include the changes in cross packages, I include Laszlo, Fish and Mike for the discussion. 

Thanks
Liming
> -----Original Message-----
> From: Leif Lindholm [mailto:leif.lindholm@linaro.org]
> Sent: Thursday, September 19, 2019 5:45 PM
> To: Gao, Liming <liming.gao@intel.com>
> Cc: Baptiste Gerondeau <baptiste.gerondeau@linaro.org>; devel@edk2.groups.io; ard.biesheuvel@linaro.org; Kinney, Michael D
> <michael.d.kinney@intel.com>; Zhang, Shenglei <shenglei.zhang@intel.com>
> Subject: Re: [PATCH 0/3] Arm builds on Visual Studio
> 
> Hi Liming,
> 
> On Thu, Sep 19, 2019 at 06:19:42AM +0000, Gao, Liming wrote:
> > I add my comments.
> >
> > >-----Original Message-----
> > >From: Baptiste Gerondeau [mailto:baptiste.gerondeau@linaro.org]
> > >Sent: Thursday, September 19, 2019 12:05 AM
> > >To: devel@edk2.groups.io
> > >Cc: ard.biesheuvel@linaro.org; leif.lindholm@linaro.org; Kinney, Michael D
> > ><michael.d.kinney@intel.com>; Gao, Liming <liming.gao@intel.com>; Zhang,
> > >Shenglei <shenglei.zhang@intel.com>; Baptiste Gerondeau
> > ><baptiste.gerondeau@linaro.org>
> > >Subject: [PATCH 0/3] Arm builds on Visual Studio
> > >
> > >EDIT: Resending the series since I mistakenly used the wrong email,
> > >sorry !
> > >
> > >We are currently making an effort to make ARM (and AARCH64 eventually)
> > >builds using Microsoft's Visual Studio Compiler (aka MSVC/MSFT).
> > >
> > >These 3 patches correspond to an effort to make the assembler work with
> > >MSFT, which entails :
> > >- Feeding MSFT the RVCT .asm files, since they share syntax
> > >  requirements.
> >
> > Please separate the patch. Each patch is for each package, can't cross packages.
> > If so, the package maintainer can easy review the change.
> 
> I agree with this as a general rule, but for this (hopefully never to
> be repeated) operation, it makes sense to me to keep each change in
> this set as one patch.
> 
> For the simple reason that the alternative leaves several unusable
> commits in sequence in the repository. There is simply no way to
> bisect through this change on a per-package basis.
> 
> This is after all a horrible horrible hack that lets us keep using the
> .asm files provided for one toolchain family (RVCT) in a different
> toolchain family (MSFT), without having to delete and re-add, losing
> history in the process.
> 
> Would you be OK with an exception for this extremely unusual
> situation?
> 
> > >- Fixing some instructions syntax in those .asm files, in order to make
> > >  them palatable for MSFT.
> > >- Fixing some minor formatting issue in INF files, while we're at it.
> > >
> > >This set enables the assembler, meanwhile the C also require changes,
> > >which will come in a set later. This set makes the RVCT toolchain family
> > >and profiles obsolete, unblocking :
> > >BZ: https://bugzilla.tianocore.org/show_bug.cgi?id=1750
> >
> > With this change, can we continue to work on BZ 1750?
> 
> Yes.
> 
> /
>     Leif
> 
> > >As mentioned in the above bug, dropping RVCT would entail orphanating
> > >the .asm files that powered the RVCT build. Since Visual Studio uses the
> > >same file syntax, those can be reused to power the VS build.
> > >
> > >These patches have been tested on VS2019 (v15.9.11) and VS2017 (v16.0.1)
> >
> > Do you mean you verify this change with new VS2019 tool chain?
> >
> > Thanks
> > Liming
> > >
> > >Baptiste GERONDEAU (3):
> > >  ArmPkg/MdePkg : Unify INF files format
> > >  ARM/Assembler: Correct syntax from RVCT for MSFT
> > >  ARM/Assembler: Reuse RVCT assembler for MSFT build
> > >
> > > ArmPkg/Drivers/ArmGic/ArmGicLib.inf                                  |  2 +-
> > > ArmPkg/Library/ArmExceptionLib/Arm/ExceptionSupport.asm              | 30
> > >+++++++++++++++++-------------
> > > ArmPkg/Library/ArmExceptionLib/ArmExceptionLib.inf                   |  2 +-
> > > ArmPkg/Library/ArmExceptionLib/ArmRelocateExceptionLib.inf           |  2 +-
> > > ArmPkg/Library/ArmHvcLib/ArmHvcLib.inf                               |  2 +-
> > > ArmPkg/Library/ArmLib/Arm/ArmV7Support.asm                           |  6 ++++--
> > > ArmPkg/Library/ArmLib/ArmBaseLib.inf                                 |  8 ++++----
> > > ArmPkg/Library/ArmMmuLib/ArmMmuBaseLib.inf                           |  4 ++--
> > > ArmPkg/Library/ArmSmcLib/ArmSmcLib.inf                               |  2 +-
> > > ArmPkg/Library/ArmSmcPsciResetSystemLib/ArmSmcPsciResetSystemLib.inf
> > >|  2 +-
> > > ArmPkg/Library/ArmSvcLib/ArmSvcLib.inf                               |  2 +-
> > > ArmPlatformPkg/Library/ArmPlatformLibNull/ArmPlatformLibNull.inf     |  2 +-
> > > ArmPlatformPkg/Library/ArmPlatformStackLib/ArmPlatformStackLib.inf   |  2
> > >+-
> > > ArmPlatformPkg/PrePeiCore/PrePeiCoreMPCore.inf                       |  6 +++---
> > > ArmPlatformPkg/PrePeiCore/PrePeiCoreUniCore.inf                      |  6 +++---
> > > ArmPlatformPkg/PrePi/PeiMPCore.inf                                   |  2 +-
> > > ArmPlatformPkg/PrePi/PeiUniCore.inf                                  |  2 +-
> > > MdePkg/Library/BaseIoLibIntrinsic/Arm/ArmVirtMmio.asm                | 18
> > >+++++++++---------
> > > MdePkg/Library/BaseIoLibIntrinsic/BaseIoLibIntrinsicArmVirt.inf      |  2 +-
> > > MdePkg/Library/BaseMemoryLibOptDxe/BaseMemoryLibOptDxe.inf           |
> > >20 ++++++++++----------
> > > MdePkg/Library/BaseSynchronizationLib/BaseSynchronizationLib.inf     |  2 +-
> > > 21 files changed, 65 insertions(+), 59 deletions(-)
> > >
> > >--
> > >2.23.0
> >