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Author SHA1 Message Date
Ard Biesheuvel 64a910f3da BaseTools: AArch64: use explicit linker scripts 
Instead of relying on the builtin linker script of GNU ld, which
may vary based on binutils version (which is not tightly coupled to
the GCC version) and linker command line options, introduce a linker
script for AArch64 to be used by all GCC/binutils versions.

The script is laid out such that two ELF sections .text and .data are
created that map onto the PE/COFF with the same names. By aligning
.data to the minimum alignment of .text, and by not adding any
additional padding -which is what LD's builtin linker script does- the
relative offset between .text and .data is retained after the PE/COFF
conversion. This should prevent problems with debuggers and other
tooling that are ELF based.

Also provided is an overlay linker script that increases the alignment
of .text and .data to 64 KB. This is intended for DXE_RUNTIME_DRIVER
modules, to make them compatible with the newly introduced
Properties Table feature.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Reviewed-by: Olivier Martin <Olivier.Martin@arm.com>

git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@17824 6f19259b-4bc3-4df7-8a09-765794883524
 2015-07-06 15:57:50 +00:00
Jordan Justen 288ed59079 Revert tree to r17801 
Revert r17802 "BaseTools: AArch64: use explicit linker scripts"
Revert r17803 "ArmVirtPkg: build runtime drivers with 64 KB section alignment"
Revert r17804 "IntelFrameworkModulePkg: AcpiS3SaveDxe: prepare for End-of-Dxe callback"
Revert r17805 "IntelFrameworkModulePkg: AcpiS3SaveDxe: call S3Ready() at End-of-Dxe"
Revert r17806 "OvmfPkg: AcpiS3SaveDxe: prepare for End-of-Dxe callback"

Requested-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Jordan Justen <jordan.l.justen@intel.com>

git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@17807 6f19259b-4bc3-4df7-8a09-765794883524
 2015-07-02 07:23:33 +00:00
Ard Biesheuvel f0dbe9fa0a BaseTools: AArch64: use explicit linker scripts 
Instead of relying on the builtin linker script of GNU ld, which
may vary based on binutils version (which is not tightly coupled to
the GCC version) and linker command line options, introduce a linker
script for AArch64 to be used by all GCC/binutils versions.

The script is laid out such that two ELF sections .text and .data are
created that map onto the PE/COFF with the same names. By aligning
.data to the minimum alignment of .text, and by not adding any
additional padding -which is what LD's builtin linker script does- the
relative offset between .text and .data is retained after the PE/COFF
conversion. This should prevent problems with debuggers and other
tooling that are ELF based.

Also provided is an overlay linker script that increases the alignment
of .text and .data to 64 KB. This is intended for DXE_RUNTIME_DRIVER
modules, to make them compatible with the newly introduced
Properties Table feature.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>

git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@17802 6f19259b-4bc3-4df7-8a09-765794883524
 2015-07-02 06:36:00 +00:00