Re: [Tinycc-devel] ARM64 PE32+ and UEFI support

[Barath Aron]

On 08/23/2017 02:57 PM, grischka wrote:
> Andrei E. Warkentin wrote:
> > Dear tinycc-devel,
> >
> > A few more fixes for your review.
> >
> > - support for generating ARM64 PE32+ images
> > - support for generating X64, ARM64, IA32 (untested) and ARM (untested)
> > UEFI images.
>
> I don't think we want relocation entries by default in x86/x86-64
> executables.  Maybe you can support -Wl,-no-strip-base-relocs

I would suggest this from ld(1):

       -q
       --emit-relocs
           Leave relocation sections and contents in fully linked 
executables.
           Post link analysis and optimization tools may need this 
information
           in order to perform correct modifications of executables.  This
           results in larger executables.

I'm also interested in this feature.

Regard,
Áron



> Also pe32.h and the longish portions with IMAGE_SUBSYSTEM_*/IMAGE_FILE_*
> produce lots of visual clutter.  Maybe for something that changes once
> in 10 years, we can use just hex numbers as before.
>
> Other than that the patch seems to make sense.  On which system did
> you test this?
>
> -- gr
>
> > https://github.com/andreiw/tinycc/commit/5267c3c291841cb3c3ad1ec88b4ab91a16afc44b 
> >
> > (PE: clean up characteristcs/subsystem code)
> > https://github.com/andreiw/tinycc/commit/2df4e01b400211cce90b3d427bf06dbad35bb453 
> >
> > (PE: fix UEFI image generation)
> > https://github.com/andreiw/tinycc/commit/5cf413024d4a4a163cbf3a4f4329d75f3dd640f9 
> >
> > (PE: experimental ARM64 support)
> >
> >
> > The UEFI stuff was tested by building the following simple app (you need
> > Tiano edk2 for the headers).
> >
> > $ ./x86_64-win32-tcc -I ../edk2/MdePkg/Include/ -I
> > ../edk2/MdePkg/Include/X64/  ../efitest.c  -Wl,-subsystem=efiapp 
> > -nostdlib
> > -o ../efitest.x64.efi  -v
> >
> > $ ./arm64-win32-tcc -I ../edk2/MdePkg/Include/ -I
> > ../edk2/MdePkg/Include/AArch64/  ../efitest.c -Wl,-subsystem=efiapp
> > -nostdlib -o ../efitest.aa64.efi
> >
> > -->
> > #include <Uefi.h>
> >
> > CHAR16 *gHello = L"Hello from a TinyCC compiled UEFI binary!\r\n";
> >
> > EFI_STATUS EFIAPI
> > _start(EFI_HANDLE Handle,
> >        EFI_SYSTEM_TABLE *SystemTable)
> > {
> >   CHAR16 *StackString = L"String pointer on the stack\r\n";
> > SystemTable->ConOut->OutputString(SystemTable->ConOut, StackString);
> > SystemTable->ConOut->OutputString(SystemTable->ConOut, gHello);
> >   return EFI_SUCCESS;
> > }
> > -->
> >
> >
> > ------------------------------------------------------------------------
> >
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>
>
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