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2026-02-24MdeModulePkg: Replace include guards with #pragma onceMichael Kubacki1-4/+1
Replace traditional `#ifndef`/`#define`/`#endif` include guards with `#pragma` once. `#pragma once` is a widely supported preprocessor directive that prevents header files from being included multiple times. It is supported by all toolchains used to build edk2: GCC, Clang/LLVM, and MSVC. Compared to macro-based include guards, `#pragma once`: - Eliminates the risk of macro name collisions or copy/paste errors where two headers inadvertently use the same guard macro. - Eliminate inconsistency in the way include guard macros are named (e.g., some files use `__FILE_H__`, others use `FILE_H_`, etc.). - Reduces boilerplate (three lines replaced by one). - Avoids polluting the macro namespace with guard symbols. - Can improve build times as the preprocessor can skip re-opening the file entirely, rather than re-reading it to find the matching `#endif` ("multiple-include optimization"). - Note that some compilers may already optimize traditional include guards, by recognzining the idiomatic pattern. This change is made acknowledging that overall portability of the code will technically be reduced, as `#pragma once` is not part of the C/C++ standards. However, this is considered acceptable given: 1. edk2 already defines a subset of supported compilers in BaseTools/Conf/tools_def.template, all of which have supported `#pragma once` for over two decades. 2. There have been concerns raised to the project about inconsistent include guard naming and potential macro collisions. Approximate compiler support dates: - MSVC: Supported since Visual C++ 4.2 (1996) - GCC: Supported since 3.4 (2004) (http://gnu.ist.utl.pt/software/gcc/gcc-3.4/changes.html) - Clang (LLVM based): Since initial release in 2007 Signed-off-by: Michael Kubacki <michael.kubacki@microsoft.com>
2024-02-10MdeModulePkg: Align RuntimeDxe function headers with UEFI return valuesSuqiang Ren1-1/+9
RuntimeDxe is used to back the runtime services time functions, so align the description of the function return values with the defined values for these services as described in UEFI Spec 2.10. REF: UEFI spec 2.10 section 8 Services ? Runtime Services Cc: Liming Gao <gaoliming@byosoft.com.cn> Cc: Michael D Kinney <michael.d.kinney@intel.com> Signed-off-by: Suqiang Ren <suqiangx.ren@intel.com> Reviewed-by: Liming Gao <gaoliming@byosoft.com.cn>
2021-12-07MdeModulePkg: Apply uncrustify changesMichael Kubacki1-3/+3
REF: https://bugzilla.tianocore.org/show_bug.cgi?id=3737 Apply uncrustify changes to .c/.h files in the MdeModulePkg package Cc: Andrew Fish <afish@apple.com> Cc: Leif Lindholm <leif@nuviainc.com> Cc: Michael D Kinney <michael.d.kinney@intel.com> Signed-off-by: Michael Kubacki <michael.kubacki@microsoft.com> Reviewed-by: Liming Gao <gaoliming@byosoft.com.cn>
2019-04-09MdeModulePkg: Replace BSD License with BSD+Patent LicenseMichael D Kinney1-7/+1
https://bugzilla.tianocore.org/show_bug.cgi?id=1373 Replace BSD 2-Clause License with BSD+Patent License. This change is based on the following emails: https://lists.01.org/pipermail/edk2-devel/2019-February/036260.html https://lists.01.org/pipermail/edk2-devel/2018-October/030385.html RFCs with detailed process for the license change: V3: https://lists.01.org/pipermail/edk2-devel/2019-March/038116.html V2: https://lists.01.org/pipermail/edk2-devel/2019-March/037669.html V1: https://lists.01.org/pipermail/edk2-devel/2019-March/037500.html Contributed-under: TianoCore Contribution Agreement 1.1 Signed-off-by: Michael D Kinney <michael.d.kinney@intel.com> Reviewed-by: Hao Wu <hao.a.wu@intel.com> Reviewed-by: Jian J Wang <jian.j.wang@intel.com>
2017-10-10MdeModulePkg: Update modules to consume CalculateCrc32()Liming Gao1-9/+0
Contributed-under: TianoCore Contribution Agreement 1.1 Signed-off-by: Liming Gao <liming.gao@intel.com> Reviewed-by: Star Zeng <star.zeng@intel.com>
2010-04-24Update the copyright notice formathhtian1-2/+2
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@10420 6f19259b-4bc3-4df7-8a09-765794883524
2010-01-27Remove reference to PCDs of status code value. Use macros introduced in ↵xli241-2/+1
PI1.2 instead. git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@9833 6f19259b-4bc3-4df7-8a09-765794883524
2009-07-12Correct #include statements. This is a DXE DRIVER, not a UEFI module.mdkinney1-1/+1
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@8898 6f19259b-4bc3-4df7-8a09-765794883524
2008-12-08Move NEXT_MEMORY_DESCRIPTOR() from UefiSpec.h to UEFI Librarymdkinney1-0/+1
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@6898 6f19259b-4bc3-4df7-8a09-765794883524
2008-11-05Remove over specific library classklu21-1/+0
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@6387 6f19259b-4bc3-4df7-8a09-765794883524
2008-09-04clean up the un-suitable ';' location when declaring the functions.vanjeff1-10/+5
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@5820 6f19259b-4bc3-4df7-8a09-765794883524
2008-08-30The driver and library in MdePkg, MdeModulePkg and Nt32Pkg that don't depend ↵lgao41-1/+1
on PI spec should include Uefi.h not PiDxe.h. git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@5758 6f19259b-4bc3-4df7-8a09-765794883524
2008-07-28modify coding style to pass ecc tooleric_tian1-26/+11
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@5575 6f19259b-4bc3-4df7-8a09-765794883524
2008-07-14Clean up Runtime for Doxygen comments requirement.qwang121-84/+56
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@5460 6f19259b-4bc3-4df7-8a09-765794883524
2008-04-10apply for doxgen format.vanjeff1-6/+6
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@5038 6f19259b-4bc3-4df7-8a09-765794883524
2007-11-20Revert R4300 change, Runtime driver doesn't need to covert the physical ↵lgao41-1/+0
address stored in the configure tables after SetVirtualAddressMap(). git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@4305 6f19259b-4bc3-4df7-8a09-765794883524
2007-11-16Convert the capsule image address installed in Configuration table to ↵lgao41-0/+1
virtual address. git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@4300 6f19259b-4bc3-4df7-8a09-765794883524
2007-10-17Merger trackers #7807 and #8372. vanjeff1-14/+13
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@4153 6f19259b-4bc3-4df7-8a09-765794883524
2007-07-19Move RuntimeDxe to /Core of MdeModulePkg.yshang11-0/+184
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@3363 6f19259b-4bc3-4df7-8a09-765794883524
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