Commit Graph

66 Commits

Author SHA1 Message Date
Kinney, Michael D 0c805f4f8f BaseTools/BinToPcd: Follow PEP-8 indent of 4 spaces
https://www.python.org/dev/peps/pep-0008/

Cc: Yanyan Sun <yanyan.sun@intel.com>
Cc: Yonghong Zhu <yonghong.zhu@intel.com>
Cc: Liming Gao <liming.gao@intel.com>
Signed-off-by: Michael D Kinney <michael.d.kinney@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.1
Reviewed-by: Yonghong Zhu <yonghong.zhu@intel.com>
2018-06-14 15:43:40 -07:00
Kinney, Michael D d0f946f30d BaseTools/BinToPcd: Update for Python 3 compatibility
Update to be compatible with both Python 2.x and Python 3.x.
Also return error code 1 when an error is detected to support
use of this tool in scripts.

Cc: Yanyan Sun <yanyan.sun@intel.com>
Cc: Yonghong Zhu <yonghong.zhu@intel.com>
Cc: Liming Gao <liming.gao@intel.com>
Signed-off-by: Michael D Kinney <michael.d.kinney@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.1
Reviewed-by: Yonghong Zhu <yonghong.zhu@intel.com>
2018-06-14 15:43:30 -07:00
Kinney, Michael D 8e96580999 BaseTools/BinToPcd: --offset must be 8-byte aligned
https://bugzilla.tianocore.org/show_bug.cgi?id=974
https://bugzilla.tianocore.org/show_bug.cgi?id=965

Update help to state that --offset must be 8-byte aligned.
Verify that --offset is 8-byte aligned and print an error
message if it is not 8-byte aligned.

Cc: Yanyan Sun <yanyan.sun@intel.com>
Cc: Yonghong Zhu <yonghong.zhu@intel.com>
Cc: Liming Gao <liming.gao@intel.com>
Signed-off-by: Michael D Kinney <michael.d.kinney@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.1
Reviewed-by: Yonghong Zhu <yonghong.zhu@intel.com>
2018-06-14 15:43:22 -07:00
Kinney, Michael D b2e043b689 BaseTools/BinToPcd: Clarify error message for --type HII
https://bugzilla.tianocore.org/show_bug.cgi?id=963

Update error message for --type HII.  If either --variable-guid
or --variable-name is missing, then print an error message that
states that both --variable-guid and --variable-name are required.

Cc: Yanyan Sun <yanyan.sun@intel.com>
Cc: Yonghong Zhu <yonghong.zhu@intel.com>
Cc: Liming Gao <liming.gao@intel.com>
Signed-off-by: Michael D Kinney <michael.d.kinney@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.1
Reviewed-by: Yonghong Zhu <yonghong.zhu@intel.com>
2018-06-14 15:43:15 -07:00
Kinney, Michael D 1d79b72ee6 BaseTools/BinToPcd: Fix typo in error messages
https://bugzilla.tianocore.org/show_bug.cgi?id=962

Change "PcdToBin" to "BinToPcd"

Cc: Yanyan Sun <yanyan.sun@intel.com>
Cc: Yonghong Zhu <yonghong.zhu@intel.com>
Cc: Liming Gao <liming.gao@intel.com>
Signed-off-by: Michael D Kinney <michael.d.kinney@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.1
Reviewed-by: Yonghong Zhu <yonghong.zhu@intel.com>
2018-06-14 15:43:06 -07:00
Liming Gao c30084fbac BaseTools Script: Formalize source files to follow DOS format
V3:
support exclude dir and file by name while traversing the directory.
remove close in with statement.

V2:
add version,description,copyright.
add flag -v,-q,--append-extensions,--override-extensions,--debug.
-q will omit default output,-v and --debug are not implemented.
add default file extensions.
support input of file path.
support muliple input path.
simplify comment.
change 'pattern'.encode() to b'pattern',I think this will be better.
change naming of variable and function to keep the same with BinToPcd.py

V1:
FormatDosFiles.py is added to clean up dos source files. It bases on
the rules defined in EDKII C Coding Standards Specification.
5.1.2 Do not use tab characters
5.1.6 Only use CRLF (Carriage Return Line Feed) line endings.
5.1.7 All files must end with CRLF
No trailing white space in one line. (To be added in spec)

The source files in edk2 project with the below postfix are dos format.
.h .c .nasm .nasmb .asm .S .inf .dec .dsc .fdf .uni .asl .aslc .vfr .idf
.txt .bat .py

The package maintainer can use this script to clean up all files in his
package. The prefer way is to create one patch per one package.

Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Liming Gao <liming.gao@intel.com>
Signed-off-by: Dongao Guo <dongao.guo@intel.com>
2018-06-13 13:03:16 +08:00
Carsey, Jaben 98120f5fe2 BaseTools: refactor and remove out of date use of .keys()
this is no longer required to make dictionary objects iterable.

Cc: Liming Gao <liming.gao@intel.com>
Cc: Yonghong Zhu <yonghong.zhu@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Jaben Carsey <jaben.carsey@intel.com>
Reviewed-by: Yonghong Zhu <yonghong.zhu@intel.com>
2018-04-10 10:05:16 +08:00
Carsey, Jaben 4231a8193e BaseTools: Remove equality operator with None
replace "== None" with "is None" and "!= None" with "is not None"

Cc: Yonghong Zhu <yonghong.zhu@intel.com>
Cc: Liming Gao <liming.gao@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Jaben Carsey <jaben.carsey@intel.com>
Reviewed-by: Yonghong Zhu <yonghong.zhu@intel.com>
2018-03-30 08:25:13 +08:00
Kinney, Michael D aedd1559cc BaseTools/BinToPcd: Add support for multiple binary input files
https://bugzilla.tianocore.org/show_bug.cgi?id=890

There are use cases where a VOID * PCD needs to be generated from multiple
binary input files.  This can be in the form of an array of fixed size
elements or a set of variable sized elements.

Update BinToPcd to support multiple one or more -i INPUTFILE arguments.
By default, the contents of each binary input file are concatenated in
the order provided.  This supports generating a PCD that is an array of
fixed size elements

Add -x, --xdr flags to BinToPcd  to encodes the PCD using the
Variable-Length Opaque Data of RFC 4506 External Data Representation
Standard (XDR).

    https://tools.ietf.org/html/rfc4506
    https://tools.ietf.org/html/rfc4506#section-4.10

The data format from RFC 4506 meets the requirements for a PCD that is a
set of variable sized elements in the Variable-Length Opaque Data format.
The overhead of this format is a 32-bit length and 0 to 3 bytes of padding
to align the next element at a 32-bit boundary.

Cc: Sean Brogan <sean.brogan@microsoft.com>
Cc: Yonghong Zhu <yonghong.zhu@intel.com>
Cc: Liming Gao <liming.gao@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Michael D Kinney <michael.d.kinney@intel.com>
Reviewed-by: Yonghong Zhu <yonghong.zhu@intel.com>
2018-03-28 08:51:15 -07:00
Yonghong Zhu 7ccc9c954c BaseTools: Add PackageDocumentTools into Scripts folder
This tool is used to generate the document for edk2 packages. The
generated document will be in UDK release. For example, UDK2017
document can be found in:
https://github.com/tianocore/tianocore.github.io/wiki/UDK2017#documentation

Cc: Star Zeng <star.zeng@intel.com>
Cc: Liming Gao <liming.gao@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Yonghong Zhu <yonghong.zhu@intel.com>
Reviewed-by: Star Zeng <star.zeng@intel.com>
2018-03-19 09:19:36 +08:00
Michael D Kinney ef190542b4 BaseTools/Scripts: Add sample makefile for use with RunMakefile.py
https://bugzilla.tianocore.org/show_bug.cgi?id=670

Add sample makefile that can be used to test RunMakefile.py
script and can also be used as a template to start a new
PREBUILD/POSTBUILD makefile.

This makefile contains TAB characters instead of spaces on
purpose to maximize compatibility with make utilities.

Cc: Liming Gao <liming.gao@intel.com>
Cc: Yonghong Zhu <yonghong.zhu@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Michael Kinney <michael.d.kinney@intel.com>
Reviewed-by: Yonghong Zhu <yonghong.zhu@intel.com>
2017-08-11 11:28:35 -07:00
Michael D Kinney c8d385265f BaseTools/Scripts: Add python script to run a makefile
https://bugzilla.tianocore.org/show_bug.cgi?id=670

Add the python script RunMakefile.py that can be used
in a PREBUILD/POSTBUIILD action to invoke a makefile
passing in context as makefile defines.  The command
line arguments passed into RunMakefile.py are converted
to the following set of defines.

* ACTIVE_PLATFORM
* TARGET_ARCH
* TOOL_CHAIN_TAG
* CONF_DIRECTORY
* TARGET
* EXTRA_FLAGS

In addition, a makefile can access the system environment
variables including WORKSPACE and PACKAGES_PATH.

The makefile target from the following set is also passed
into the makefile.  If no target is passed into build, then
the 'all' target is used.

[all|fds|genc|genmake|clean|cleanall|cleanlib|modules|libraries|run]

A platform DSC file can use a statements in the [Defines]
section of the following form to use this script.  MAKEFILE
is a WORKSPACE or PACKAGES_PATH relative path to the makefile
to run.

[Defines]
  PREBUILD  = python BaseTools/Script/RunMakefile.py --makefile MAKEFILE
  POSTBUILD = python BaseTools/Script/RunMakefile.py --makefile MAKEFILE

Cc: Liming Gao <liming.gao@intel.com>
Cc: Yonghong Zhu <yonghong.zhu@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Michael Kinney <michael.d.kinney@intel.com>
Reviewed-by: Yonghong Zhu <yonghong.zhu@intel.com>
2017-08-11 11:21:04 -07:00
Michael D Kinney f2d1b866df BaseTools/PatchCheck: Support Contribution Agreement 1.1
https://bugzilla.tianocore.org/show_bug.cgi?id=628

Update PatchCheck.py to support either
"Contributed-under: TianoCore Contribution Agreement 1.0"
or "Contributed-under: TianoCore Contribution Agreement 1.1"
in the commit message.

Temporarily continue to allow the TianoCore Contribution
Agreement 1.0 agreement.

Cc: Leif Lindholm <leif.lindholm@linaro.org>
Cc: Andrew Fish <afish@apple.com>
Cc: Jordan Justen <jordan.l.justen@intel.com>
Cc: Liming Gao <liming.gao@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Michael D Kinney <michael.d.kinney@intel.com>
Reviewed-by: Jordan Justen <jordan.l.justen@intel.com>
Reviewed-by: Leif Lindholm <leif.lindholm@linaro.org>
2017-08-03 11:01:46 -07:00
Hao Wu 6a69dd4937 BaseTools/PatchCheck.py: Add warning info for new binary files
The commit adds the detection of adding new binary files in a patch file
or in a commit.

The following warning messages will be appended at the end of the script
output:

WARNING - The following binary files will be added into the repository:
  <BinaryFile1>
  <BinaryFile2>
  ...

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Hao Wu <hao.a.wu@intel.com>
Reviewed-by: Liming Gao <liming.gao@intel.com>
2017-06-26 09:34:11 +08:00
Hao Wu aab57eff5a BaseTools/PatchCheck.py: Fix misreport for binary changes in patch
For a patch file that:
1. Contains a binary change
2. Contains any other changes after the binary change

PatchCheck.py will complains with the following error:
* Patch format error: diff found after end of patch
   Line: literal XXXX

This commit resolves this misreport.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Hao Wu <hao.a.wu@intel.com>
Reviewed-by: Liming Gao <liming.gao@intel.com>
2017-06-26 09:26:56 +08:00
Ard Biesheuvel f4d3ba87bb BaseTools/Scripts: fix GccBase.lds line endings
Replace a <LF> line ending that was introduced inadvertently by a
recent commit with the correct <CR><LF>

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
2017-05-28 12:07:02 +00:00
Ard Biesheuvel 00b00cc57b BaseTools/Scripts: discard .gnu.hash section in GCC builds
Some builds of GCC/binutils will default to using the GNU flavor of
the symbol hash table, and will emit it into a section called .gnu.hash
rather than .hash. We have no use for its contents, and GenFw ignores
it anyway, so it shouldn't really matter what we do with it.

However, due to a workaround for AARCH64 we have in GenFw to deal with
older GCCs that corrupt section-based relocations when merging sections
during the final link, we need the ELF and PE/COFF views of the binary
to be identical. Since we don't place the .gnu.hash section explicitly,
it may end up at the beginning of the ELF binary, causing other sections
to be shifted in the ELF view but not in the PE/COFF view.

So let's add .gnu.hash to the GCC linker script. We don't care about its
contents so add it to the /DISCARD/ section.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Tested-by: Leif Lindholm <leif.lindholm@linaro.org>
Reviewed-by: Liming Gao <liming.gao@intel.com>
2017-05-24 06:09:39 -07:00
Ard Biesheuvel 3cf41b8728 BaseTools: GCC: move most AutoGen.obj contents back to .data section
The generated AutoGen.c files mostly contain read-only data, but due to
lacking annotations, all of it is emitted into the .data section by the
compiler.

Given that GUIDs are UEFI's gaffer tape, having writable GUIDs is a
security hazard, and this was the main rationale for putting AutoGen.obj
in the .text section. However, as it turns out, patchable PCDs are emitted
there as well, which can legally be modified at runtime.

So update the wildcard pattern to only match g...Guid sections, and move
everything else back to .data (Note that this relies on -fdata-sections,
without that option, everything is emitted into .data)

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Tested-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Liming Gao <liming.gao@intel.com>
Fixes: 233bd25b00
[lersek@redhat.com: add reference to previous commit being fixed up]
Signed-off-by: Laszlo Ersek <lersek@redhat.com>
2017-02-24 11:27:56 +01:00
Jiewen Yao 88dab294d2 BaseTool/Script: Add SmiHandleProfile OS tool to get symbol.
This tool accepts the input XML file generated by SmiHandlerProfile
application and convert the RVA address to be a user readable
symbol.
It also converts the GUID to be a user readable string.

Cc: Yonghong Zhu <yonghong.zhu@intel.com>
Cc: Liming Gao <liming.gao@intel.com>
Cc: Michael D Kinney <michael.d.kinney@intel.com>
Cc: Laszlo Ersek <lersek@redhat.com>
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Jiewen Yao <jiewen.yao@intel.com>
Reviewed-by: Liming Gao <liming.gao@intel.com>
2017-02-22 15:28:22 +08:00
Michael Kinney fd0597aa9c BaseTools/Scripts: Add BinToPcd utility
https://bugzilla.tianocore.org/show_bug.cgi?id=228

Add a utility that converts a binary file into a VOID* PCD value
or a full DSC file VOID* PCD statement with support for all the
DSC supported PCD sections.

usage: BinToPcd [-h] [--version] -i INPUTFILE [-o OUTPUTFILE] [-p PCDNAME]
                [-t {VPD,HII}] [-m MAXSIZE] [-f OFFSET] [-n VARIABLENAME]
                [-g VARIABLEGUID] [-v] [-q] [--debug [0-9]]

Convert a binary file to a VOID* PCD value or DSC file VOID* PCD statement.
Copyright (c) 2016, Intel Corporation. All rights reserved.

optional arguments:
  -h, --help        show this help message and exit
  --version         show program's version number and exit
  -i INPUTFILE, --input INPUTFILE
                    Input binary filename
  -o OUTPUTFILE, --output OUTPUTFILE
                    Output filename for PCD value or PCD statement
  -p PCDNAME, --pcd PCDNAME
                    Name of the PCD in the form
                    <PcdTokenSpaceGuidCName>.<PcdCName>
  -t {VPD,HII}, --type {VPD,HII}
                    PCD statement type (HII or VPD). Default is standard.
  -m MAXSIZE, --max-size MAXSIZE
                    Maximum size of the PCD. Ignored with --type HII.
  -f OFFSET, --offset OFFSET
                    VPD offset if --type is VPD. UEFI Variable offset if
                    --type is HII.
  -n VARIABLENAME, --variable-name VARIABLENAME
                    UEFI variable name. Only used with --type HII.
  -g VARIABLEGUID, --variable-guid VARIABLEGUID
                    UEFI variable GUID C name. Only used with --type HII.
  -v, --verbose     Increase output messages
  -q, --quiet       Reduce output messages
  --debug [0-9]     Set debug level

This utility can be used in PCD value mode to convert a binary
file into a string that can then be copied into the PCD value field
of a VOID* PCD.  The following is an example of PCD value mode on
an 8 byte test.bin file.

  BinToPcd.py -i test.bin

  {0x48, 0x65, 0x6c, 0x6c, 0x6f, 0x20, 0x0d, 0x0a}

The DSC file VOID* PCD statement mode can be used to generate a
complete PCD statement for the PCD section types that a DSC file
supports:

  [PcdsFixedAtBuild]
  [PcdsPatchableInModule]
  [PcdsDynamicDefault]
  [PcdsDynamicExDefault]
  [PcdsDynamicVpd]
  [PcdsDynamicExVpd]
  [PcdsDynamicHii]
  [PcdsDynamicExHii]

The PCD statement mode is useful when combined with a !include
statement in a DSC file.  BinToPcd.py can be used to convert a
binary file to a PCD statement in an output file, and that output
file can be included into a DSC file in the matching PCD section
to set the value of the PCD to the value from the binary file
without having to copy the value into the DSC file.  Updates can be
made to the included file without editing the DSC file.  Some
example use cases are the setting the public key PCDs such as:

  gEfiSecurityPkgTokenSpaceGuid.PcdRsa2048Sha256PublicKeyBuffer
  gEfiSecurityPkgTokenSpaceGuid.PcdPkcs7CertBuffer

The following example converts a public key binary file to a
[PcdsFixedAtBuild] compatible PCD statement:

  BinToPcd.py -i PublicKey.bin -o PublicKey.pcd
    --pcd gEfiSecurityPkgTokenSpaceGuid.PcdPkcs7CertBufferkenSpaceGuid

The PublicKey.pcd output file contains a single line:

  gEfiSecurityPkgTokenSpaceGuid.PcdPkcs7CertBuffer|{0x48, ...}

A DSC file can be updated to include the PublicKey.pcd file:

  [PcdsFixedAtBuild]
  !include PublicKey.pcd

Value examples
===============
  BinToPcd.py -i test.bin
    {0x68, 0x65, 0x6c, 0x6c, 0x6f, 0x20, 0x0d, 0x0a}

Normal examples:
=================
  BinToPcd.py -i test.bin -p Guid.Token
    Guid.Token|{0x68, 0x65, 0x6c, 0x6c, 0x6f, 0x20, 0x0d, 0x0a}

  BinToPcd.py -i test.bin -p Guid.Token -m 20
    Guid.Token|{0x68, 0x65, 0x6c, 0x6c, 0x6f, 0x20, 0x0d, 0x0a}|VOID*|20

VPD examples:
=============
  BinToPcd.py -i test.bin -p Guid.Token -t VPD
    Guid.Name|*|8|{0x48, 0x65, 0x6c, 0x6c, 0x6f, 0x20, 0x0d, 0x0a}

  BinToPcd.py -i test.bin -p Guid.Token -t VPD -f 20
    Guid.Name|20|8|{0x48, 0x65, 0x6c, 0x6c, 0x6f, 0x20, 0x0d, 0x0a}

  BinToPcd.py -i test.bin -p Guid.Token -t VPD -m 10
    Guid.Name|*|10|{0x48, 0x65, 0x6c, 0x6c, 0x6f, 0x20, 0x0d, 0x0a}

  BinToPcd.py -i test.bin -p Guid.Token -t VPD -f 20 -m 10
    Guid.Name|20|10|{0x48, 0x65, 0x6c, 0x6c, 0x6f, 0x20, 0x0d, 0x0a}

HII examples:
=============
  BinToPcd.py -i test.bin -p Guid.Token -t HII -g VarGuid -n VarName
    Guid.Name|L"VarName"|VarGuid|0|{0x48, 0x65, 0x6c, 0x6c}

  BinToPcd.py -i test.bin -p Guid.Token -t HII -g VarGuid -n VarName -f 8
    Guid.Name|L"VarName"|VarGuid|8|{0x48, 0x65, 0x6c, 0x6c}

Cc: Yonghong Zhu <yonghong.zhu@intel.com>
Cc: Liming Gao <liming.gao@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Michael Kinney <michael.d.kinney@intel.com>
Reviewed-by: Liming Gao <liming.gao@intel.com>
Reviewed-by: Yonghong Zhu <yonghong.zhu@intel.com>
2016-11-14 08:40:41 -08:00
Yonghong Zhu c3926cdbbd BaseTools/PatchCheck.py: Update to report error for EFI_D_*
In EDK2, DEBUG_* is recommended to be used instead of EFI_D_*. For new
code, they should use DEBUG_* macro.

Fixes:https://bugzilla.tianocore.org/show_bug.cgi?id=143
Cc: Liming Gao <liming.gao@intel.com>
Cc: Jordan Justen <jordan.l.justen@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Yonghong Zhu <yonghong.zhu@intel.com>
Reviewed-by: Jordan Justen <jordan.l.justen@intel.com>
2016-10-21 07:28:01 +08:00
Yonghong Zhu e709bbb1ce BaseTools/PatchCheck.py: Update to handle the two [] as prefix
The bug is that only remove the first [] when it does the char count,
however sometimes we use [edk2][patch] as prefix, this patch fix this bug.

Fixes: https://bugzilla.tianocore.org/show_bug.cgi?id=113
Cc: Liming Gao <liming.gao@intel.com>
Cc: Jordan Justen <jordan.l.justen@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Yonghong Zhu <yonghong.zhu@intel.com>
Reviewed-by: Jordan Justen <jordan.l.justen@intel.com>
2016-10-21 07:25:22 +08:00
Yonghong Zhu e61406708c BaseTools/PatchCheck.py: Update for max length of subject and message line
This patch update PatchCheck.py:
1. The subject line of the commit message should be < 72 characters.
2. The other lines of the commit message should be < 76 characters.

Fixes: https://bugzilla.tianocore.org/show_bug.cgi?id=113
Cc: Liming Gao <liming.gao@intel.com>
Cc: Jordan Justen <jordan.l.justen@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Yonghong Zhu <yonghong.zhu@intel.com>
Reviewed-by: Jordan Justen <jordan.l.justen@intel.com>
2016-10-21 07:23:57 +08:00
Ard Biesheuvel 669a7562cb BaseTools/GccBase.lds: don't copy RELA section to PE/COFF
The CLANG38 toolchain creates a PIE binary at link time. This is
necessary since the LTO code generation may otherwise result in
code that cannot execute correctly when loaded above 2 GB.

PIE executables contain a RELA section consisting of dynamic
relocation entries that are intended for consumption by the loader
at runtime. For this reason, it has the SHF_ALLOC attribute set by
default, and will be identified by GenFw as a section that needs to
be copied into the PE/COFF binary, resulting in waste of space since
the PE/COFF loader does not use this data at all.

So mark the RELA section as informational: this will prevent the
linker from setting the SHF_ALLOC attribute, causing GenFw to
ignore it.

DxeCore.efi before:

    Detected 'X64' type PE/COFF image consisting of 3 sections
    Section alignment:      0x40
    File alignment:         0x40
    Section '.text' @ 0x00000240
    File offset:            0x240
    Virtual size:           0x21000
    Raw size:               0x21000
    Section '.data' @ 0x00021240
    File offset:            0x21240
    Virtual size:           0x3640
    Raw size:               0x3640
    Section '.reloc' @ 0x00024880
    File offset:            0x24880
    Virtual size:           0x280
    Raw size:               0x280

DxeCore.efi after:

    Detected 'X64' type PE/COFF image consisting of 3 sections
    Section alignment:      0x40
    File alignment:         0x40
    Section '.text' @ 0x00000240
    File offset:            0x240
    Virtual size:           0x1f440
    Raw size:               0x1f440
    Section '.data' @ 0x0001f680
    File offset:            0x1f680
    Virtual size:           0x3640
    Raw size:               0x3640
    Section '.reloc' @ 0x00022cc0
    File offset:            0x22cc0
    Virtual size:           0x280
    Raw size:               0x280

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Reviewed-by: Liming Gao <liming.gao@intel.com>
2016-08-22 12:26:42 +02:00
Ard Biesheuvel 7fd5d61980 BaseTools GCC: drop GNU notes section from EFI image
Recent versions of GNU ld automatically emit a .notes section into
the ELF binary containing a build id. Since this is an allocatable
section by default, it will be identified by GenFw as a section
that requires PE/COFF conversion, which may cause sections to be
moved around unexpectedly.

So retain the section, but tag it as INFO, which tells the linker
that it should not be accounted for in the binary's memory layout.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Acked-by: Jordan Justen <jordan.l.justen@intel.com>
Reviewed-by: Liming Gao <liming.gao@intel.com>
2016-08-02 10:54:11 +02:00
Thomas Palmer 03630a8148 Preserve hii section in GCC binaries
According to UEFI spec:
Once an image is loaded, LoadImage() installs
EFI_HII_PACKAGE_LIST_PROTOCOL on the handle if the image contains a
custom PE/COFF resource with the type 'HII'. The protocol's
interface pointer points to the HII package list which is contained
in the resource's data.

This is controlled by the UEFI_HII_RESOURCE_SECTION define in the INF
file.  When present the HII resource is linked with the module
binary.

Unfortunately GCC-built binaries have been stripping the .hii section
entirely.  See  "[edk2] HII gEfiHiiPackageListProtocolGuid problem
with  GCC48(VS2012x86 works)"
http://thread.gmane.org/gmane.comp.bios.tianocore.devel/13438
http://thread.gmane.org/gmane.comp.bios.tianocore.devel/14899

This patch tells the linker to preserve the .hii sections

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Thomas Palmer <thomas.palmer@hpe.com>
Acked-by: Laszlo Ersek <lersek@redhat.com>
Tested-by: Bruce Cran <bruce.cran@gmail.com>
Reviewed-by: Bruce Cran <bruce.cran@gmail.com>
Reviewed-by: Yonghong Zhu <yonghong.zhu@intel.com>
Reviewed-by: Liming Gao <liming.gao@intel.com>
2016-07-26 10:21:45 +08:00
Star Zeng d84577e573 BaseTools MemoryProfileSymbolGen.py: Handle 64bits rva from "nm -l xxx.dll"
Current MemoryProfileSymbolGen.py assumes the rva is 32bits,
the patch is to remove the restriction to match any lengths
of rva.

Cc: Jiewen Yao <jiewen.yao@intel.com>
Cc: Liming Gao <liming.gao@intel.com>
Cc: Yonghong Zhu <yonghong.zhu@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Star Zeng <star.zeng@intel.com>
Reviewed-by: Jiewen Yao <jiewen.yao@intel.com>
2016-07-05 17:25:38 +08:00
Star Zeng 1d9869f9e9 BaseTools Scripts: Add MemoryProfileSymbolGen.py
This tool depends on DIA2Dump.exe (VS) or nm (gcc) to parse debug entry.

Usage: MemoryProfileSymbolGen.py [--version] [-h] [--help] [-i inputfile
[-o outputfile]]

Copyright (c) 2016, Intel Corporation. All rights reserved.

Options:
  --version             show program's version number and exit
  -h, --help            show this help message and exit
  -i INPUTFILENAME, --inputfile=INPUTFILENAME
                        The input memory profile info file output from
                        MemoryProfileInfo application in MdeModulePkg
  -o OUTPUTFILENAME, --outputfile=OUTPUTFILENAME
                        The output memory profile info file with symbol,
                        MemoryProfileInfoSymbol.txt will be used if it is not

Cc: Jiewen Yao <jiewen.yao@intel.com>
Cc: Liming Gao <liming.gao@intel.com>
Cc: Yonghong Zhu <yonghong.zhu@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Star Zeng <star.zeng@intel.com>
Reviewed-by: Jiewen Yao <jiewen.yao@intel.com>
2016-07-01 09:39:59 +08:00
Jordan Justen ad00b0452e BaseTools ConvertMasmToNasm: Don't try to reconvert .nasm files
We now check to see if the destination .nasm file already exists. If
it does, then we don't try to convert the .asm to .nasm.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Jordan Justen <jordan.l.justen@intel.com>
Reviewed-by: Liming Gao <liming.gao@intel.com>
2016-06-28 13:16:53 -07:00
Jordan Justen 5de927b54b BaseTools ConvertMasmToNasm: Support preserving assembly files
In the first stage of conversion, we need to preserve the AT&T style
.s assembly files for use with OS X toolchains.

This change allows '--keep=s' to be used with the script to preserve
these files.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Jordan Justen <jordan.l.justen@intel.com>
Reviewed-by: Liming Gao <liming.gao@intel.com>
2016-06-28 13:16:46 -07:00
Jordan Justen 90694f1218 BaseTools ConvertMasmToNasm: put filter/map result in tuple for python3
Python 3's filter and map functions returns an iterator which you
can't call len() on. Since we'll want to use len() later, we put the
filter results into a tuple.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Jordan Justen <jordan.l.justen@intel.com>
Reviewed-by: Liming Gao <liming.gao@intel.com>
2016-06-28 13:16:39 -07:00
Jordan Justen c8102434ba BaseTools ConvertMasmToNasm: Support ASM_PFX in .asm files
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Jordan Justen <jordan.l.justen@intel.com>
Reviewed-by: Liming Gao <liming.gao@intel.com>
2016-06-28 13:16:19 -07:00
Jordan Justen 7e869eeb15 BaseTools ConvertMasmToNasm: Support Python 3
The script is updated to support both python 2.7 and python 3.

v2:
 * Use io.open() rather than open() (Jaben)

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Jordan Justen <jordan.l.justen@intel.com>
Cc: Yonghong Zhu <yonghong.zhu@intel.com>
Cc: Liming Gao <liming.gao@intel.com>
Cc: Erik Bjorge <erik.c.bjorge@intel.com>
Reviewed-by: Liming Gao <liming.gao@intel.com>
Reviewed-by: Erik Bjorge <erik.c.bjorge@intel.com>
2016-03-10 10:01:40 -08:00
Jordan Justen bc6a342535 BaseTools ConvertMasmToNasm: Fix exception when no arguments are given
Convert to use the argparse library rather than optparse.

As part of the conversion, the script will now give an error message
if no arguments are given. Previously the script would give an
exception when no arguments were given.

Fixes: https://github.com/tianocore/edk2/issues/65
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Jordan Justen <jordan.l.justen@intel.com>
Cc: Yonghong Zhu <yonghong.zhu@intel.com>
Cc: Liming Gao <liming.gao@intel.com>
Reviewed-by: Liming Gao <liming.gao@intel.com>
2016-03-10 10:01:39 -08:00
Jordan Justen 5369c2bb73 BaseTools ConvertMasmToNasm: Fix running script outside of a git tree
The script previously would hit an exception if it was run outside of
a git tree.

The exception looked like:

edk2/BaseTools/Scripts/ConvertMasmToNasm.py Version 0.01
Traceback (most recent call last):
  File "edk2/BaseTools/Scripts/ConvertMasmToNasm.py", line 986, in <module>
    ConvertAsmApp()
  File "edk2/BaseTools/Scripts/ConvertMasmToNasm.py", line 984, in __init__
    ConvertAsmFile(src, dst, self)
  File "edk2/BaseTools/Scripts/ConvertMasmToNasm.py", line 209, in __init__
    CommonUtils.__init__(self, clone)
  File "edk2/BaseTools/Scripts/ConvertMasmToNasm.py", line 69, in __init__
    self.gitemail = clone.gitemail
AttributeError: ConvertAsmApp instance has no attribute 'gitemail'

Fixes: https://github.com/tianocore/edk2/issues/63
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Jordan Justen <jordan.l.justen@intel.com>
Cc: Yonghong Zhu <yonghong.zhu@intel.com>
Cc: Liming Gao <liming.gao@intel.com>
Cc: Michael Kinney <michael.d.kinney@intel.com>
Reviewed-by: Liming Gao <liming.gao@intel.com>
2016-03-10 09:59:11 -08:00
Liming Gao 4e06673dbc BaseTools: Update Scripts to support VS2015 env
edk2 Edk2Setup.bat depends on those scripts to configure VS env.
Update them to support VS2015.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Liming Gao <liming.gao@intel.com>
Reviewed-by: Yonghong Zhu <yonghong.zhu@intel.com>

git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@19431 6f19259b-4bc3-4df7-8a09-765794883524
2015-12-22 01:01:54 +00:00
Jordan Justen 3f45c1375d BaseTools/Scripts: Add ConvertUni.py script
This script uses python codecs to convert .uni string files between
the utf-16 and utf-8 formats.

The advantages of utf-8 data:
 * Generally smaller files
 * More commonly supported by editors
 * Not treated as binary data in patch files

The script was tested on MdePkg with both python 2.7 and python 3.4.
It was able to convert all MdePkg .uni files between utf-8 and utf-16
multiple times always producing the same files for each format.

v2:
 * Rename ConvertUtf16ToUtf8.py to ConvertUni.py
 * Also support utf-8 to utf-16 conversion (with --utf-16)

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Jordan Justen <jordan.l.justen@intel.com>
Reviewed-by: Jaben Carsey <jaben.carsey@intel.com>
Reviewed-by: Michael Kinney <michael.d.kinney@intel.com>
Reviewed-by: Yonghong Zhu <yonghong.zhu@intel.com>

git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@19247 6f19259b-4bc3-4df7-8a09-765794883524
2015-12-15 04:50:50 +00:00
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
Ard Biesheuvel 214a3b7941 BaseTools GCC: avoid the use of COMMON symbols
The default behavior of the GCC compiler is to emit uninitialized globals
with external linkage into a COMMON section, where duplicate definitions
are merged. This may result in unexpected behavior, since global variables
defined under the same name in different C files may not refer to the same
logical data item.

For instance, the definitions of EFI_EVENT mVirtualAddressChangeEvent that
[used to] appear in the following files:

  CryptoPkg/Library/BaseCryptLib/SysCall/RuntimeMemAllocation.c
  MdeModulePkg/Universal/Variable/RuntimeDxe/VariableDxe.c

will be folded into a single instance of the variable when the latter
module includes the former library, which can lead to unexpected results.

Even if some may argue that there are legal uses for COMMON allocation, the
high modularity of EDK2 combined with the low level of awareness of the
intracicies surrounding common allocation and the generally poor EDK2
developer discipline regarding the use of the STATIC keyword* make a strong
case for disabling it by default, and re-enabling it explicitly for packages
that depend on it.

So prevent GCC from emitting variables into the COMMON section, by passing
-fno-common to the compiler, and discarding the section in the GNU ld linker
script.

* Any function or variable that is only referenced from the translation unit
  that defines it could be made STATIC. This does not only prevent issues
  like the above, it also allows the compiler to generate better code, e.g.,
  drop out of line function definitions after inlining all invocations or
  perform constant propagation on variables.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Reviewed-by: Liming Gao <liming.gao@intel.com>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
Tested-by: Laszlo Ersek <lersek@redhat.com>

git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@19164 6f19259b-4bc3-4df7-8a09-765794883524
2015-12-08 07:40:12 +00:00
Jordan Justen 103733f8e6 BaseTools PatchCheck.py: Support binary diff
This allows a patch with binary data that is generated with --binary
to be parsed by the PatchCheck.py script.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Jordan Justen <jordan.l.justen@intel.com>
Reviewed-by: Liming Gao <liming.gao@intel.com>

git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@19104 6f19259b-4bc3-4df7-8a09-765794883524
2015-12-03 08:18:00 +00:00
Jordan Justen a7e173b07a BaseTools/Scripts: Add PatchCheck.py script
This script can be used to check some expected rules for EDK II
patches. It only works on git formatted patches.

It checks both the commit message and the lines that are added in the
patch diff.

In the commit message it verifies line lengths, signature formats, and
the Contributed-under tag.

In the patch, it checks that line endings are CRLF for all files that
don't have a .sh extension. It verifies that no trailing whitespace is
present and that tab characters are not used.

Patch contributors should use this script prior to submitting their
patches. Package maintainers can also use it to verify incoming
patches.

It can also be run by specifying a git revision list, so actual patch
files are not always required.

For example, to checkout this last 5 patches in your git branch you
can run:

  python PatchCheck.py HEAD~5..

Or, a shortcut (like git log):

  python PatchCheck.py -5

The --oneline option works similar to git log --oneline.

The --silent option enables silent operation.

The script supports python 2.7 and python 3.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Jordan Justen <jordan.l.justen@intel.com>
Cc: Erik Bjorge <erik.c.bjorge@intel.com>
Cc: Yonghong Zhu <yonghong.zhu@intel.com>
Cc: Liming Gao <liming.gao@intel.com>
Reviewed-by: Leif Lindholm <leif.lindholm@linaro.org>
Reviewed-by: Erik Bjorge <erik.c.bjorge@intel.com>
Reviewed-by: Liming Gao <liming.gao@intel.com>

git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@18652 6f19259b-4bc3-4df7-8a09-765794883524
2015-10-22 06:01:02 +00:00
Liming Gao 485eb3a252 BaseTools: Update Edk2Setup.bat to support multiple workspaces
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Liming Gao <liming.gao@intel.com>
Reviewed-by: Wu Hao A <hao.a.wu@intel.com>

git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@18583 6f19259b-4bc3-4df7-8a09-765794883524
2015-10-08 09:29:36 +00:00
Ard Biesheuvel c4a59af8c1 BaseTools IA32/X64: Use GccBase.lds instead of gcc*-ld-script
These scripts all now have the same contents, so we only need to use
GccBase.lds. Therefore we can delete gcc-4K-align-ld-script,
gcc4.4-ld-script and gcc4.9-ld-script.

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

git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@18142 6f19259b-4bc3-4df7-8a09-765794883524
2015-08-03 08:23:59 +00:00
Ard Biesheuvel a7ab160209 BaseTools AARCH64: remove incremental linker script for 64K alignment
Now that we moved all users to the unified GCC linker script, remove
the old 64 KB incremental linker script for AARCH64 since it is now
unused.

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

git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@18141 6f19259b-4bc3-4df7-8a09-765794883524
2015-08-03 08:23:36 +00:00
Ard Biesheuvel 6b3720e438 BaseTools AARCH64: move to unified GCC linker script
Drop the GCC AARCH64 specific linker script and use the new
unified one instead.

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

git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@18138 6f19259b-4bc3-4df7-8a09-765794883524
2015-08-03 08:23:05 +00:00
Ard Biesheuvel 233bd25b00 BaseTools GCC: move AutoGen.obj contents to .text section
All AutoGen.obj files consist of global GUID definitions, fixed
and patchable PCDs and other data that is essentially read-only at
runtime but has not been declared as such for various reasons.

By moving these contents to .text we achieve two things:
- global GUIDs and other data items which must be constant for correct
  program operation can no longer be modified, for instance, when
  running a DXE_RUNTIME_MODULE binary under the OS with the Properties
  Table feature for memory protection enabled;
- the .data section becomes smaller, and may be dropped completely for
  many XIP modules, which reduces wasted FV space if the PE/COFF section
  alignment is large.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Reviewed-by: Jordan Justen <jordan.l.justen@intel.com>
Tested-by: Liming Gao <liming.gao@intel.com>
Tested-by: Leif Lindholm <leif.lindholm@linaro.org>

git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@18137 6f19259b-4bc3-4df7-8a09-765794883524
2015-08-03 08:22:50 +00:00
Ard Biesheuvel 56948ba190 BaseTools GCC: align start of .data to .text alignment
Now that GenFw honors the ELF section alignment when placing the
PE/COFF sections in the output, the start of the PE/COFF version of
.data will be aligned to the alignment of .text if its alignment is
higher than the default. So duplicate this behavior in the ELF output,
this will make the memory layout of the PE/COFF binary match the
layout of the ELF version more closely.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Reviewed-by: Jordan Justen <jordan.l.justen@intel.com>
Tested-by: Liming Gao <liming.gao@intel.com>
Tested-by: Leif Lindholm <leif.lindholm@linaro.org>

git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@18136 6f19259b-4bc3-4df7-8a09-765794883524
2015-08-03 08:22:39 +00:00
Ard Biesheuvel efe690cab3 BaseTools GCC: add unified GCC linker script for all archs and versions
This unifies all GCC linker scripts into a single parametrised GCC
linker script that can be used for all GCC versions and architectures.

The two parameters that can be set on the linker command line are:
- PECOFF_HEADER_SIZE, this is a build time property of GenFw, but
  its value is different between 32-bit and 64-bit;
- common-page-size, this can be set using -z on the ld command line,
  and controls the value of the COMMONPAGESIZE constant when used in
  a linker script. This value is used for the minimum section alignment.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Reviewed-by: Jordan Justen <jordan.l.justen@intel.com>
Tested-by: Liming Gao <liming.gao@intel.com>
Tested-by: Leif Lindholm <leif.lindholm@linaro.org>

git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@18135 6f19259b-4bc3-4df7-8a09-765794883524
2015-08-03 08:22:28 +00:00
Ard Biesheuvel c28a4ab663 BaseTools IA32/X64: get header size and alignment from ld commandline
Instead of hardcoding the values for the PE/COFF header size and the
section alignment, set them on the linker command line. This factors
out these values from the various linker scripts, which will allow us
to unify them in a subsequent patch.

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

git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@18134 6f19259b-4bc3-4df7-8a09-765794883524
2015-08-03 08:22:16 +00:00
Ard Biesheuvel 25e63063e3 BaseTools IA32/X64: move .got contents to the PE/COFF .text section
Move the .got contents to the PE/COFF .text section. This should be
a no-op, since we typically don't generate position independent code
(i.e., using -fPIC). But since the GOT contains variable addresses that
are updated at relocation time only, its contents are best kept in .text
to prevent them from being overwritten inadvertently.

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

git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@18133 6f19259b-4bc3-4df7-8a09-765794883524
2015-08-03 08:22:00 +00:00