mirror of https://github.com/acidanthera/audk.git
7b8f69d7e1
Rebecca reports that builds of AArch64 DSCs that involve PIE linking when using ELF based toolchains are failing in some cases, resulting in an error message like bad definition for symbol '_GLOBAL_OFFSET_TABLE_'@0x72d8 or unsupported symbol type. For example, absolute and undefined symbols are not supported. The reason turns out to be that, while GenFw does carry some logic to convert GOT based symbol references into direct ones (which is always possible given that our ELF to PE/COFF conversion only supports fully linked executables), it does not support all possible combinations of relocations that the linker may emit to load symbol addresses from the GOT. In particular, when performing a non-LTO link on object code built with GCC using -fpie, we may end up with GOT based references such as the one below, where the address of the GOT itself is taken, and the offset of the symbol in the GOT is reflected in the immediate offset of the subsequent LDR instruction. 838: adrp x0, 16000 838: R_AARCH64_ADR_PREL_PG_HI21 _GLOBAL_OFFSET_TABLE_ 83c: ldr x0, [x0, #2536] 83c: R_AARCH64_LD64_GOTPAGE_LO15 _gPcd_BinaryPatch_PcdFdBaseAddress The reason that we omit GOT based symbol references when performing ELF to PE/COFF conversion is that the GOT is not described by static ELF relocations, which means that the ELF file lacks the metadata to generate the PE/COFF relocations covering the GOT table in the PE/COFF executable. Given that none of the usual motivations for using a GOT (copy on write footprint, shared libraries) apply to EFI executables in the first place, the easiest way around this is to convert all GOT based symbol address loads to PC relative ADR/ADRP instructions. So implement this handling for R_AARCH64_LD64_GOTPAGE_LO15 and R_AARCH64_LD64_GOTOFF_LO15 relocations as well, and turn the LDR instructions in question into ADR instructions that generate the address immediately. This leaves the reference to _GLOBAL_OFFSET_TABLE_ itself, which is what generated the error to begin with. Considering that this symbol is never referenced (i.e., it doesn't appear anywhere in the code) and is only meaningful in combination with R_*_GOT_* based relocations that follow it, we can just disregard any references to it entirely, given that we convert all of those followup relocations into direct references. Signed-off-by: Ard Biesheuvel <ardb@kernel.org> Tested-by: Rebecca Cran <rebecca@bsdio.com> Acked-by: Leif Lindholm <quic_llindhol@quicinc.com> Acked-by: Bob Feng <bob.c.feng@intel.com> |
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| .azurepipelines | ||
| .mergify | ||
| .pytool | ||
| ArmPkg | ||
| ArmPlatformPkg | ||
| ArmVirtPkg | ||
| BaseTools | ||
| Conf | ||
| CryptoPkg | ||
| DynamicTablesPkg | ||
| EmbeddedPkg | ||
| EmulatorPkg | ||
| FatPkg | ||
| FmpDevicePkg | ||
| IntelFsp2Pkg | ||
| IntelFsp2WrapperPkg | ||
| MdeModulePkg | ||
| MdePkg | ||
| NetworkPkg | ||
| OvmfPkg | ||
| PcAtChipsetPkg | ||
| PrmPkg | ||
| RedfishPkg | ||
| SecurityPkg | ||
| ShellPkg | ||
| SignedCapsulePkg | ||
| SourceLevelDebugPkg | ||
| StandaloneMmPkg | ||
| UefiCpuPkg | ||
| UefiPayloadPkg | ||
| UnitTestFrameworkPkg | ||
| .gitignore | ||
| .gitmodules | ||
| .mailmap | ||
| CONTRIBUTING.md | ||
| License-History.txt | ||
| License.txt | ||
| Maintainers.txt | ||
| ReadMe.rst | ||
| edksetup.bat | ||
| edksetup.sh | ||
| pip-requirements.txt | ||
ReadMe.rst
============== EDK II Project ============== A modern, feature-rich, cross-platform firmware development environment for the UEFI and PI specifications from www.uefi.org. Core CI Build Status -------------------- ============================= ================= =============== =================== Host Type & Toolchain Build Status Test Status Code Coverage ============================= ================= =============== =================== Windows_VS2019_ |WindowsCiBuild| |WindowsCiTest| |WindowsCiCoverage| Ubuntu_GCC5_ |UbuntuCiBuild| |UbuntuCiTest| |UbuntuCiCoverage| ============================= ================= =============== =================== `More CI Build information <.pytool/Readme.md>`__ Platform CI Build Status ------------------------ Microsoft Windows VS2019 ```````````````````````` ============================= ================= ============= ============= ============== Toolchain CONFIG DEBUG RELEASE NOOPT ============================= ================= ============= ============= ============== EmulatorPkg_Win_VS2019_ | IA32 |em32d| |em32r| |em32n| | | X64 |em64d| |em64r| |em64n| | | IA32 FULL |em32fd| |em32fr| |em32fn| | | X64 FULL |em64fd| |em64fr| |em64fn| OvmfPkg_Win_VS2019_ | IA32 |op32d| |op32r| |op32n| | | X64 |op64d| |op64r| |op64n| | | IA32 X64 |op3264d| |op3264r| |op3264n| | | IA32 X64 FULL |op3264fd| |op3264fr| |op3264fn| ============================= ================= ============= ============= ============== Ubuntu 18.04 GCC5 ````````````````` ============================= ================= ============= ============= ============== Toolchain CONFIG DEBUG RELEASE NOOPT ============================= ================= ============= ============= ============== ArmVirtPkg_Ubuntu_GCC5_ | AARCH64 |avAArch64du| |avAArch64ru| |avAArch64nu| | | ARM |avArmdu| |avArmru| |avArmnu| EmulatorPkg_Ubuntu_GCC5_ | IA32 |em32du| |em32ru| |em32nu| | | X64 |em64du| |em64ru| |em64nu| | | IA32 FULL |em32fdu| |em32fru| |em32fnu| | | X64 FULL |em64fdu| |em64fru| |em64fnu| OvmfPkg_Ubuntu_GCC5_ | IA32 |op32du| |op32ru| |op32nu| | | X64 |op64du| |op64ru| |op64nu| | | IA32 X64 |op3264du| |op3264ru| |op3264nu| | | IA32 X64 FULL |op3264fdu| |op3264fru| |op3264fru| ============================= ================= ============= ============= ============== |TCBZ_2668|_ - EmulatorPkg Ubuntu GCC5 Segfaults during execution. |TCBZ_2639|_ - EmulatorPkg Ubuntu GCC5 Segfaults during execution. `More ArmVirtPkg CI Build Information <ArmVirtPkg/PlatformCI/ReadMe.md>`__ `More EmulatorPkg CI Build Information <EmulatorPkg/PlatformCI/ReadMe.md>`__ `More OvmfPkg CI Build Information <OvmfPkg/PlatformCI/ReadMe.md>`__ License Details --------------- The majority of the content in the EDK II open source project uses a `BSD-2-Clause Plus Patent License <License.txt>`__. The EDK II open source project contains the following components that are covered by additional licenses: - `BaseTools/Source/C/LzmaCompress <BaseTools/Source/C/LzmaCompress/LZMA-SDK-README.txt>`__ - `BaseTools/Source/C/VfrCompile/Pccts <BaseTools/Source/C/VfrCompile/Pccts/RIGHTS>`__ - `CryptoPkg\Library\BaseCryptLib\SysCall\inet_pton.c <CryptoPkg\Library\BaseCryptLib\SysCall\inet_pton.c>`__ - `CryptoPkg\Library\Include\crypto\dso_conf.h <https://github.com/openssl/openssl/blob/e2e09d9fba1187f8d6aafaa34d4172f56f1ffb72/LICENSE>`__ - `CryptoPkg\Library\Include\openssl\opensslconf.h <https://github.com/openssl/openssl/blob/e2e09d9fba1187f8d6aafaa34d4172f56f1ffb72/LICENSE>`__ - `EmbeddedPkg/Library/FdtLib <EmbeddedPkg/Library/FdtLib/fdt.c>`__. (EDK II uses BSD License) - `EmbeddedPkg/Include/fdt.h <EmbeddedPkg/Include/fdt.h>`__. (EDK II uses BSD Licence) - `EmbeddedPkg/Include/libfdt.h <EmbeddedPkg/Include/libfdt.h>`__. (EDK II uses BSD License) - `MdeModulePkg/Library/LzmaCustomDecompressLib <MdeModulePkg/Library/LzmaCustomDecompressLib/LZMA-SDK-README.txt>`__ - `OvmfPkg <OvmfPkg/License.txt>`__ The EDK II open source project uses content from upstream projects as git submodules that are covered by additional licenses. - `ArmPkg/Library/ArmSoftFloatLib/berkeley-softfloat-3 <https://github.com/ucb-bar/berkeley-softfloat-3/blob/b64af41c3276f97f0e181920400ee056b9c88037/COPYING.txt>`__ - `BaseTools/Source/C/BrotliCompress/brotli <https://github.com/google/brotli/blob/666c3280cc11dc433c303d79a83d4ffbdd12cc8d/LICENSE>`__ - `CryptoPkg/Library/OpensslLib/openssl <https://github.com/openssl/openssl/blob/e2e09d9fba1187f8d6aafaa34d4172f56f1ffb72/LICENSE>`__ - `MdeModulePkg/Library/BrotliCustomDecompressLib/brotli <https://github.com/google/brotli/blob/666c3280cc11dc433c303d79a83d4ffbdd12cc8d/LICENSE>`__ - `MdeModulePkg/Universal/RegularExpressionDxe/oniguruma <https://github.com/kkos/oniguruma/blob/abfc8ff81df4067f309032467785e06975678f0d/COPYING>`__ - `UnitTestFrameworkPkg/Library/CmockaLib/cmocka <https://github.com/tianocore/edk2-cmocka/blob/f5e2cd77c88d9f792562888d2b70c5a396bfbf7a/COPYING>`__ - `RedfishPkg/Library/JsonLib/jansson <https://github.com/akheron/jansson/blob/2882ead5bb90cf12a01b07b2c2361e24960fae02/LICENSE>`__ The EDK II Project is composed of packages. The maintainers for each package are listed in `Maintainers.txt <Maintainers.txt>`__. Resources --------- - `TianoCore <http://www.tianocore.org>`__ - `EDK II <https://github.com/tianocore/tianocore.github.io/wiki/EDK-II>`__ - `Getting Started with EDK II <https://github.com/tianocore/tianocore.github.io/wiki/Getting-Started-with-EDK-II>`__ - `Mailing Lists <https://github.com/tianocore/tianocore.github.io/wiki/Mailing-Lists>`__ - `TianoCore Bugzilla <https://bugzilla.tianocore.org>`__ - `How To Contribute <https://github.com/tianocore/tianocore.github.io/wiki/How-To-Contribute>`__ - `Release Planning <https://github.com/tianocore/tianocore.github.io/wiki/EDK-II-Release-Planning>`__ Code Contributions ------------------ To make a contribution to a TianoCore project, follow these steps. #. Create a change description in the format specified below to use in the source control commit log. #. Your commit message must include your ``Signed-off-by`` signature #. Submit your code to the TianoCore project using the process that the project documents on its web page. If the process is not documented, then submit the code on development email list for the project. #. It is preferred that contributions are submitted using the same copyright license as the base project. When that is not possible, then contributions using the following licenses can be accepted: - BSD (2-clause): http://opensource.org/licenses/BSD-2-Clause - BSD (3-clause): http://opensource.org/licenses/BSD-3-Clause - MIT: http://opensource.org/licenses/MIT - Python-2.0: http://opensource.org/licenses/Python-2.0 - Zlib: http://opensource.org/licenses/Zlib For documentation: - FreeBSD Documentation License https://www.freebsd.org/copyright/freebsd-doc-license.html Contributions of code put into the public domain can also be accepted. Contributions using other licenses might be accepted, but further review will be required. Developer Certificate of Origin ------------------------------- Your change description should use the standard format for a commit message, and must include your ``Signed-off-by`` signature. In order to keep track of who did what, all patches contributed must include a statement that to the best of the contributor's knowledge they have the right to contribute it under the specified license. The test for this is as specified in the `Developer's Certificate of Origin (DCO) 1.1 <https://developercertificate.org/>`__. The contributor certifies compliance by adding a line saying Signed-off-by: Developer Name developer@example.org where ``Developer Name`` is the contributor's real name, and the email address is one the developer is reachable through at the time of contributing. :: Developer's Certificate of Origin 1.1 By making a contribution to this project, I certify that: (a) The contribution was created in whole or in part by me and I have the right to submit it under the open source license indicated in the file; or (b) The contribution is based upon previous work that, to the best of my knowledge, is covered under an appropriate open source license and I have the right under that license to submit that work with modifications, whether created in whole or in part by me, under the same open source license (unless I am permitted to submit under a different license), as indicated in the file; or (c) The contribution was provided directly to me by some other person who certified (a), (b) or (c) and I have not modified it. (d) I understand and agree that this project and the contribution are public and that a record of the contribution (including all personal information I submit with it, including my sign-off) is maintained indefinitely and may be redistributed consistent with this project or the open source license(s) involved. Sample Change Description / Commit Message ------------------------------------------ :: From: Contributor Name <contributor@example.com> Subject: [Repository/Branch PATCH] Pkg-Module: Brief-single-line-summary Full-commit-message Signed-off-by: Contributor Name <contributor@example.com> Notes for sample patch email ```````````````````````````` - The first line of commit message is taken from the email's subject line following ``[Repository/Branch PATCH]``. The remaining portion of the commit message is the email's content. - ``git format-patch`` is one way to create this format Definitions for sample patch email `````````````````````````````````` - ``Repository`` is the identifier of the repository the patch applies. This identifier should only be provided for repositories other than ``edk2``. For example ``edk2-BuildSpecification`` or ``staging``. - ``Branch`` is the identifier of the branch the patch applies. This identifier should only be provided for branches other than ``edk2/master``. For example ``edk2/UDK2015``, ``edk2-BuildSpecification/release/1.27``, or ``staging/edk2-test``. - ``Module`` is a short identifier for the affected code or documentation. For example ``MdePkg``, ``MdeModulePkg/UsbBusDxe``, ``Introduction``, or ``EDK II INF File Format``. - ``Brief-single-line-summary`` is a short summary of the change. - The entire first line should be less than ~70 characters. - ``Full-commit-message`` a verbose multiple line comment describing the change. Each line should be less than ~70 characters. - ``Signed-off-by`` is the contributor's signature identifying them by their real/legal name and their email address. Submodules ---------- Submodule in EDK II is allowed but submodule chain should be avoided as possible as we can. Currently EDK II contains the following submodules - CryptoPkg/Library/OpensslLib/openssl - ArmPkg/Library/ArmSoftFloatLib/berkeley-softfloat-3 - MdeModulePkg/Universal/RegularExpressionDxe/oniguruma - MdeModulePkg/Library/BrotliCustomDecompressLib/brotli - BaseTools/Source/C/BrotliCompress/brotli ArmSoftFloatLib is actually required by OpensslLib. It's inevitable in openssl-1.1.1 (since stable201905) for floating point parameter conversion, but should be dropped once there's no such need in future release of openssl. To get a full, buildable EDK II repository, use following steps of git command .. code-block:: bash git clone https://github.com/tianocore/edk2.git cd edk2 git submodule update --init cd .. If there's update for submodules, use following git commands to get the latest submodules code. .. code-block:: bash cd edk2 git pull git submodule update Note: When cloning submodule repos, '--recursive' option is not recommended. EDK II itself will not use any code/feature from submodules in above submodules. So using '--recursive' adds a dependency on being able to reach servers we do not actually want any code from, as well as needlessly downloading code we will not use. .. =================================================================== .. This is a bunch of directives to make the README file more readable .. =================================================================== .. CoreCI .. _Windows_VS2019: https://dev.azure.com/tianocore/edk2-ci/_build/latest?definitionId=32&branchName=master .. |WindowsCiBuild| image:: https://dev.azure.com/tianocore/edk2-ci/_apis/build/status/Windows%20VS2019%20CI?branchName=master .. |WindowsCiTest| image:: https://img.shields.io/azure-devops/tests/tianocore/edk2-ci/32.svg .. |WindowsCiCoverage| image:: https://img.shields.io/badge/coverage-coming_soon-blue .. _Ubuntu_GCC5: https://dev.azure.com/tianocore/edk2-ci/_build/latest?definitionId=31&branchName=master .. |UbuntuCiBuild| image:: https://dev.azure.com/tianocore/edk2-ci/_apis/build/status/Ubuntu%20GCC5%20CI?branchName=master .. |UbuntuCiTest| image:: https://img.shields.io/azure-devops/tests/tianocore/edk2-ci/31.svg .. |UbuntuCiCoverage| image:: https://img.shields.io/badge/coverage-coming_soon-blue .. ArmVirtPkg .. _ArmVirtPkg_Ubuntu_GCC5: https://dev.azure.com/tianocore/edk2-ci/_build/latest?definitionId=46&branchName=master .. |avAArch64du| image:: https://dev.azure.com/tianocore/edk2-ci/_apis/build/status/PlatformCI_ArmVirtPkg_Ubuntu_GCC5_CI?branchName=master&jobName=Platform_CI&configuration=Platform_CI%20QEMU_AARCH64_DEBUG .. |avAArch64ru| image:: https://dev.azure.com/tianocore/edk2-ci/_apis/build/status/PlatformCI_ArmVirtPkg_Ubuntu_GCC5_CI?branchName=master&jobName=Platform_CI&configuration=Platform_CI%20QEMU_AARCH64_RELEASE .. |avAArch64nu| image:: https://dev.azure.com/tianocore/edk2-ci/_apis/build/status/PlatformCI_ArmVirtPkg_Ubuntu_GCC5_CI?branchName=master&jobName=Platform_CI&configuration=Platform_CI%20QEMU_AARCH64_NOOPT .. |avArmdu| image:: https://dev.azure.com/tianocore/edk2-ci/_apis/build/status/PlatformCI_ArmVirtPkg_Ubuntu_GCC5_CI?branchName=master&jobName=Platform_CI&configuration=Platform_CI%20QEMU_ARM_DEBUG .. |avArmru| image:: https://dev.azure.com/tianocore/edk2-ci/_apis/build/status/PlatformCI_ArmVirtPkg_Ubuntu_GCC5_CI?branchName=master&jobName=Platform_CI&configuration=Platform_CI%20QEMU_ARM_RELEASE .. |avArmnu| image:: https://dev.azure.com/tianocore/edk2-ci/_apis/build/status/PlatformCI_ArmVirtPkg_Ubuntu_GCC5_CI?branchName=master&jobName=Platform_CI&configuration=Platform_CI%20QEMU_ARM_NOOPT .. EmulatorPkg .. |TCBZ_2668| image:: https://img.shields.io/bugzilla/2668?baseUrl=https%3A%2F%2Fbugzilla.tianocore.org .. _TCBZ_2668: https://bugzilla.tianocore.org/show_bug.cgi?id=2668 .. |TCBZ_2639| image:: https://img.shields.io/bugzilla/2639?baseUrl=https%3A%2F%2Fbugzilla.tianocore.org .. _TCBZ_2639: https://bugzilla.tianocore.org/show_bug.cgi?id=2639 .. _EmulatorPkg_Win_VS2019: https://dev.azure.com/tianocore/edk2-ci/_build/latest?definitionId=44&branchName=master .. _EmulatorPkg_Ubuntu_GCC5: https://dev.azure.com/tianocore/edk2-ci/_build/latest?definitionId=43&branchName=master .. |em32d| image:: https://dev.azure.com/tianocore/edk2-ci/_apis/build/status/PlatformCI_EmulatorPkg_Windows_VS2019_CI?branchName=master&jobName=Platform_CI&configuration=Platform_CI%20EmulatorPkg_IA32_DEBUG .. |em32du| image:: 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https://dev.azure.com/tianocore/edk2-ci/_apis/build/status/PlatformCI_EmulatorPkg_Ubuntu_GCC5_CI?branchName=master&jobName=Platform_CI&configuration=Platform_CI%20EmulatorPkg_X64_DEBUG .. |em64r| image:: https://dev.azure.com/tianocore/edk2-ci/_apis/build/status/PlatformCI_EmulatorPkg_Windows_VS2019_CI?branchName=master&jobName=Platform_CI&configuration=Platform_CI%20EmulatorPkg_X64_RELEASE .. |em64ru| image:: https://dev.azure.com/tianocore/edk2-ci/_apis/build/status/PlatformCI_EmulatorPkg_Ubuntu_GCC5_CI?branchName=master&jobName=Platform_CI&configuration=Platform_CI%20EmulatorPkg_X64_RELEASE .. |em64n| image:: https://dev.azure.com/tianocore/edk2-ci/_apis/build/status/PlatformCI_EmulatorPkg_Windows_VS2019_CI?branchName=master&jobName=Platform_CI&configuration=Platform_CI%20EmulatorPkg_X64_NOOPT .. |em64nu| image:: 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https://dev.azure.com/tianocore/edk2-ci/_apis/build/status/PlatformCI_EmulatorPkg_Ubuntu_GCC5_CI?branchName=master&jobName=Platform_CI&configuration=Platform_CI%20EmulatorPkg_X64_FULL_RELEASE .. |em64fn| image:: https://dev.azure.com/tianocore/edk2-ci/_apis/build/status/PlatformCI_EmulatorPkg_Windows_VS2019_CI?branchName=master&jobName=Platform_CI&configuration=Platform_CI%20EmulatorPkg_X64_FULL_NOOPT .. |em64fnu| image:: https://dev.azure.com/tianocore/edk2-ci/_apis/build/status/PlatformCI_EmulatorPkg_Ubuntu_GCC5_CI?branchName=master&jobName=Platform_CI&configuration=Platform_CI%20EmulatorPkg_X64_FULL_NOOPT .. OvmfPkg .. |TCBZ_2661| image:: https://img.shields.io/bugzilla/2661?baseUrl=https%3A%2F%2Fbugzilla.tianocore.org .. _TCBZ_2661: https://bugzilla.tianocore.org/show_bug.cgi?id=2661 .. _OvmfPkg_Win_VS2019: https://dev.azure.com/tianocore/edk2-ci/_build/latest?definitionId=50&branchName=master .. _OvmfPkg_Ubuntu_GCC5: https://dev.azure.com/tianocore/edk2-ci/_build/latest?definitionId=48&branchName=master .. |op32d| image:: https://dev.azure.com/tianocore/edk2-ci/_apis/build/status/PlatformCI_OvmfPkg_Windows_VS2019_CI?branchName=master&jobName=Platform_CI&configuration=Platform_CI%20OVMF_IA32_DEBUG .. |op32du| image:: https://dev.azure.com/tianocore/edk2-ci/_apis/build/status/PlatformCI_OvmfPkg_Ubuntu_GCC5_CI?branchName=master&jobName=Platform_CI&configuration=Platform_CI%20OVMF_IA32_DEBUG .. |op32r| image:: https://dev.azure.com/tianocore/edk2-ci/_apis/build/status/PlatformCI_OvmfPkg_Windows_VS2019_CI?branchName=master&jobName=Platform_CI&configuration=Platform_CI%20OVMF_IA32_RELEASE .. 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image:: https://dev.azure.com/tianocore/edk2-ci/_apis/build/status/PlatformCI_OvmfPkg_Windows_VS2019_CI?branchName=master&jobName=Platform_CI&configuration=Platform_CI%20OVMF_IA32X64_FULL_DEBUG .. |op3264fdu| image:: https://dev.azure.com/tianocore/edk2-ci/_apis/build/status/PlatformCI_OvmfPkg_Ubuntu_GCC5_CI?branchName=master&jobName=Platform_CI&configuration=Platform_CI%20OVMF_IA32X64_FULL_DEBUG .. |op3264fr| image:: https://dev.azure.com/tianocore/edk2-ci/_apis/build/status/PlatformCI_OvmfPkg_Windows_VS2019_CI?branchName=master&jobName=Platform_CI&configuration=Platform_CI%20OVMF_IA32X64_FULL_RELEASE .. |op3264fru| image:: https://dev.azure.com/tianocore/edk2-ci/_apis/build/status/PlatformCI_OvmfPkg_Ubuntu_GCC5_CI?branchName=master&jobName=Platform_CI&configuration=Platform_CI%20OVMF_IA32X64_FULL_RELEASE .. |op3264fn| replace:: |TCBZ_2661|_ .. |op3264fnu| image:: 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