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2021-12-07MdePkg: Apply uncrustify changesMichael Kubacki2-3/+1
REF: https://bugzilla.tianocore.org/show_bug.cgi?id=3737 Apply uncrustify changes to .c/.h files in the MdePkg 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>
2021-12-07MdePkg: Change OPTIONAL keyword usage styleMichael D Kinney1-2/+2
REF: https://bugzilla.tianocore.org/show_bug.cgi?id=3760 Update all use of ', OPTIONAL' to ' OPTIONAL,' for function params. Cc: Andrew Fish <afish@apple.com> Cc: Leif Lindholm <leif@nuviainc.com> Cc: Michael Kubacki <michael.kubacki@microsoft.com> Signed-off-by: Michael D Kinney <michael.d.kinney@intel.com> Reviewed-by: Liming Gao <gaoliming@byosoft.com.cn>
2019-04-09MdePkg: Replace BSD License with BSD+Patent LicenseMichael D Kinney4-28/+4
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: Liming Gao <liming.gao@intel.com>
2018-12-25MdePkg/BaseLib: Introduce new SpeculationBarrier APIHao Wu1-0/+30
REF:https://bugzilla.tianocore.org/show_bug.cgi?id=1417 X86 specific BaseLib API AsmLfence() was introduced to address the Spectre Variant 1 (CVE-2017-5753) issue. The purpose of this API is to insert barriers to stop speculative execution. However, the API is highly architecture (X86) specific, and thus should be avoided using across generic code. To address this issue, this patch will add a new BaseLib API called SpeculationBarrier(). Different architectures will have different implementations for this API. For IA32 and x64, the implementation of SpeculationBarrier() will directly call AsmLfence(). For ARM and AARCH64, this patch will add a temporary empty implementation as a placeholder. We hope experts in ARM can help to contribute the actual implementation. For EBC, similar to the ARM and AARCH64 cases, a temporary empty implementation is added. Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org> Cc: Leif Lindholm <leif.lindholm@linaro.org> Cc: Michael D Kinney <michael.d.kinney@intel.com> Cc: Jiewen Yao <jiewen.yao@intel.com> Cc: Laszlo Ersek <lersek@redhat.com> Contributed-under: TianoCore Contribution Agreement 1.1 Signed-off-by: Hao Wu <hao.a.wu@intel.com> Reviewed-by: Liming Gao <liming.gao@intel.com>
2018-01-10MdePkg/BaseLib: add attribute 'RETURNS_TWICE' to SetJumpM1cha1-0/+1
When compiling with any ARM toolchain and Os, registers can get trashed when returning for the second time from SetJump because GCC only handles this correctly when using standard names like 'setjmp' or 'getcontext'. When different names are used you have to use the attribute 'returns_twice' to tell gcc to be extra careful. example: extern int FN_NAME(void*); void jmp_buf_set(void *jmpb, void (*f)(void)) { if (!FN_NAME(jmpb)) f(); } this code produces this wrong code with Os: 00000000 <jmp_buf_set>: 0: e92d4010 push {r4, lr} 4: e1a04001 mov r4, r1 8: ebfffffe bl 0 <nonstandard_setjmp> c: e3500000 cmp r0, #0 10: 01a03004 moveq r3, r4 14: 08bd4010 popeq {r4, lr} 18: 012fff13 bxeq r3 1c: e8bd4010 pop {r4, lr} 20: e12fff1e bx lr The generated code pushes backups of r4 and lr to the stack and then saves all registers using nonstandard_setjmp. Then it pops the stack and jumps to the function in r3 which is the main problem because now the function can overwrite our register backups on the stack. When we return a second time from the call to nonstandard_setjmp, the stack pointer has it's original(pushed) position and when the code pops r4 and lr from the stack the values are not guaranteed to be the same. When using a standard name like setjmp or getcontext or adding '__attribute__((returns_twice))' to nonstandard_setjmp's declaration the code looks different: 00000000 <jmp_buf_set>: 0: e92d4007 push {r0, r1, r2, lr} 4: e58d1004 str r1, [sp, #4] 8: ebfffffe bl 0 <setjmp> c: e3500000 cmp r0, #0 10: 059d3004 ldreq r3, [sp, #4] 14: 01a0e00f moveq lr, pc 18: 012fff13 bxeq r3 1c: e28dd00c add sp, sp, #12 20: e49de004 pop {lr} ; (ldr lr, [sp], #4) 24: e12fff1e bx lr Here the problem is being solved by restoring r3 from the stack without popping it. Contributed-under: TianoCore Contribution Agreement 1.1 Signed-off-by: Michael Zimmermann <sigmaepsilon92@gmail.com> Reviewed-by: Liming Gao <liming.gao@intel.com>
2010-06-11Minor grammatical work--mostly adding periods. Sending separately a list ↵myronporter3-7/+7
of files missing Doxygen @param and @return information. git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@10572 6f19259b-4bc3-4df7-8a09-765794883524
2010-04-23Update the copyright notice formathhtian3-6/+6
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@10405 6f19259b-4bc3-4df7-8a09-765794883524
2009-08-24Fix file headersmdkinney1-6/+0
Move stack alignment check from CPU specific files into common SwitchStack() function and add VA_END() to SwitchStack(). Fix incorrect syntax for ASM_FUNCTION_REMOVE_IF_UNREFERENCED git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@9193 6f19259b-4bc3-4df7-8a09-765794883524
2009-01-30Split out Synchronization Library from Base Librarymdkinney1-116/+0
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@7378 6f19259b-4bc3-4df7-8a09-765794883524
2009-01-08Update function header.vanjeff1-2/+4
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@7210 6f19259b-4bc3-4df7-8a09-765794883524
2008-12-29Update copyright for files modified in this yearqhuang82-2/+2
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@7148 6f19259b-4bc3-4df7-8a09-765794883524
2008-11-25Synchronize function comment in MdePkg\Library\BaseLib.h with the instance ↵gikidy1-2/+2
of this functions. git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@6718 6f19259b-4bc3-4df7-8a09-765794883524
2008-10-31Use #include "XXX.h" for module internal header files.qhuang83-3/+3
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@6330 6f19259b-4bc3-4df7-8a09-765794883524
2008-10-23Update EBC sub-dir of BaseLib according to code review comments.xli242-28/+7
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@6198 6f19259b-4bc3-4df7-8a09-765794883524
2008-09-17remove unnecessary comments introduced by tools from MdePkg. The regular ↵vanjeff3-9/+3
express is "//^p//[ ]Include[ ]common[ ]header[ ]file[ ]for[ ]this[ ]module[.]^p//" git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@5911 6f19259b-4bc3-4df7-8a09-765794883524
2008-07-08Code scrub:yshang12-0/+20
MdePkg/Library/BaseCacheMaintenanceLib MdePkg/Library/BaseDebugLibNull MdePkg/Library/BaseIoLibIntrinsic MdePkg/Library/BaseLib MdePkg/Library/BaseMemoryLib MdePkg/Library/BaseMemoryLibMmx MdePkg/Library/BaseMemoryLibOptDxe MdePkg/Library/BaseMemoryLibOptPei MdePkg/Library/BaseMemoryLibRepStr MdePkg/Library/BaseMemoryLibSse2 MdePkg/Library/BasePeCoffGetEntryPointLib git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@5426 6f19259b-4bc3-4df7-8a09-765794883524
2007-10-05moved CpuSleep and CpuFlushTlb to the CpuLib to use PalCall in those ↵vprabhal1-30/+0
functions, it is creating circular dependency if those functions are in BaseLib and the PalCallStatic is replaced with PalCall git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@4023 6f19259b-4bc3-4df7-8a09-765794883524
2007-07-12Removed MdePkg usage of ModuleName: in file headersAJFISH3-6/+0
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@3217 6f19259b-4bc3-4df7-8a09-765794883524
2007-07-02add internal command header referencevanjeff3-4/+16
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@2959 6f19259b-4bc3-4df7-8a09-765794883524
2007-07-021. Port X64, IPF and EBC arch for BaseLibvanjeff4-0/+405
2. Port X64 arch codes for BaseMemoryLibRepStr and BaseMemoryLibSee2 git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@2955 6f19259b-4bc3-4df7-8a09-765794883524
2007-06-01Moved the MdePkg to OldMdePkg so that new code in MdePkg does not break ↵lhauch4-405/+0
existing builds. Also updated the SPD and FPD files UiNames git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@2616 6f19259b-4bc3-4df7-8a09-765794883524
2007-03-221. Removed AsmSwitchStackAndBackingStore from BaseLib.hvanjeff1-8/+20
2. Modified SwitchStack definition update to MWG 0.60e. 3. Added BaseLib/Ipf/InternalSwitchStack.c and removed BaseLib/Ipf/Non-existing.c 4. Updated any references of AsmSwitchStackAndBackingStore to SwichStack on IPF. git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@2499 6f19259b-4bc3-4df7-8a09-765794883524
2006-07-201.Added EFIAPI for some assembly functions declarevanjeff1-0/+1
2.Modified some functions header git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@1052 6f19259b-4bc3-4df7-8a09-765794883524
2006-07-191. added functions header for BaseUefiDecompressLivanjeff3-2/+80
2. added some internal functions header for BaseLib 3. added EFIAPI for some internal assembly files declare git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@1050 6f19259b-4bc3-4df7-8a09-765794883524
2006-06-101. Updated SetJump() and LongJump() for IPFbxing2-11/+12
2. Added assertion for SetJump() for all architectures 3. Added CpuSleep() for IPF git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@464 6f19259b-4bc3-4df7-8a09-765794883524
2006-05-31Created as one wrappervanjeff2-0/+92
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@352 6f19259b-4bc3-4df7-8a09-765794883524
2006-05-15Updated BaseLib for THUNK functions and some CPU functionsbxing2-0/+121
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@158 6f19259b-4bc3-4df7-8a09-765794883524
2006-04-21Initial import.bbahnsen1-0/+100
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@3 6f19259b-4bc3-4df7-8a09-765794883524