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Ard Biesheuvel b12ef6b964 BaseTools RVCT: use scatter file to enforce minimum section alignment 
Up until SVN r18540, GenFw created invalid PE/COFF binaries for the ARM
architecture, by allowing PE/COFF .data sections to appear at offsets
that were not aligned to the global PE/COFF section alignment. The
reason for this was that the relocation metadata emitted by RVCT's
armlink only contains dynamic absolute relocations, so it is impossible
to recalculate relative relocations between .text and .data, and so the
relative offset between the two needs to be preserved.

Since r18540, we do align .data to the PE/COFF section alignment,
resulting in potentially corrupt PE/COFF binaries unless .data happens
to appear at a 32-byte aligned offset. So let's introduce a RVCT scatter
file that sets this alignment for the ELF .data section (and subsequent
.bss section).

At the same time, set the start offset to 0x220 bytes (which is the size
of our 32-bit PE/COFF header) so that the memory layouts are identical
between ELF and PE/COFF. Also add a 4 KB aligned version that can be
used to build DXE_RUNTIME_DRIVER modules with runtime memory protection
enabled.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Reviewed-by: Eugene Cohen <eugene@hp.com>
Reviewed-by: Liming Gao <liming.gao@intel.com>

git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@19235 6f19259b-4bc3-4df7-8a09-765794883524
 		2015-12-14 07:55:46 +00:00
..
XMLSchema Sync BaseTool trunk (version r2649) into EDKII BaseTools. 2014-01-27 05:23:15 +00:00
Empty_Package_Information_Data_File.ini Sync BaseTools Branch (version r2271) to EDKII main trunk. 2011-08-26 07:46:26 +00:00
FrameworkDatabase.template Sync EDKII BaseTools to BaseTools project r1971 2010-05-18 05:04:32 +00:00
ReadMe.txt
…
build_rule.template BaseTools: remove ARMGCC and ARMLINUXGCC toolchains 2015-08-12 05:25:48 +00:00
target.template Sync BaseTool trunk (version r2599) into EDKII BaseTools. 2013-08-23 02:18:16 +00:00
tools_def.template BaseTools RVCT: use scatter file to enforce minimum section alignment 2015-12-14 07:55:46 +00:00

ReadMe.txt

This file contains invisible Unicode characters

This file contains invisible Unicode characters that are indistinguishable to humans but may be processed differently by a computer. If you think that this is intentional, you can safely ignore this warning. Use the Escape button to reveal them.

This directory contains the template files for the next generation of the
EDK II Build infrastructure.  These files will be copied into the WORKSPACE's
Conf directory if and only if the target files do not exist.

These files may be updated frequently.

The XMLSchema directory contains the EDK II Packaging XML definitions.  The
schema may change in the future.  It differs somewhat from the early versions
of the XML Schema.