Tianocore/edk2.git/MdeModulePkg/Include/Library/CpuExceptionHandlerLib.h, branch trunk

Renormalized end-of-lines from master@27b044605cd5f6b33a3d231576003850b3fe305b

2024-06-04T03:43:08+00:00

MdeModulePkg: Move CPU_EXCEPTION_INIT_DATA to UefiCpuPkg

2022-08-09T04:12:28+00:00

Since the API InitializeSeparateExceptionStacks is simplified and does't use the struct CPU_EXCEPTION_INIT_DATA, CPU_EXCEPTION_INIT_DATA become a inner implementation of CpuExcetionHandlerLib. Cc: Eric Dong Reviewed-by: Ray Ni Cc: Rahul Kumar Cc: Leif Lindholm Cc: Dandan Bi Cc: Liming Gao Cc: Jian J Wang Signed-off-by: Zhiguang Liu

UefiCpuPkg: Simplify InitializeSeparateExceptionStacks

2022-08-09T04:12:28+00:00

Hide the Exception implementation details in CpuExcetionHandlerLib and caller only need to provide buffer Cc: Eric Dong Reviewed-by: Ray Ni Cc: Rahul Kumar Cc: Leif Lindholm Cc: Dandan Bi Cc: Liming Gao Cc: Jian J Wang Cc: Ard Biesheuvel Reviewed-by: Sami Mujawar Signed-off-by: Zhiguang Liu

CpuException: Add InitializeSeparateExceptionStacks

2022-06-10T07:54:48+00:00

Today InitializeCpuExceptionHandlersEx is called from three modules: 1. DxeCore (links to DxeCpuExceptionHandlerLib) DxeCore expects it initializes the IDT entries as well as assigning separate stacks for #DF and #PF. 2. CpuMpPei (links to PeiCpuExceptionHandlerLib) and CpuDxe (links to DxeCpuExceptionHandlerLib) It's called for each thread for only assigning separate stacks for #DF and #PF. The IDT entries initialization is skipped because caller sets InitData->X64.InitDefaultHandlers to FALSE. Additionally, SecPeiCpuExceptionHandlerLib, SmmCpuExceptionHandlerLib also implement such API and the behavior of the API is simply to initialize IDT entries only. Because it mixes the IDT entries initialization and separate stacks assignment for certain exception handlers together, in order to know whether the function call only initializes IDT entries, or assigns stacks, we need to check: 1. value of InitData->X64.InitDefaultHandlers 2. library instance This patch cleans up the code to separate the stack assignment to a new API: InitializeSeparateExceptionStacks(). Only when caller calls the new API, the separate stacks are assigned. With this change, the SecPei and Smm instance can return unsupported which gives caller a very clear status. The old API InitializeCpuExceptionHandlersEx() is removed in this patch. Because no platform module is consuming the old API, the impact is none. Signed-off-by: Ray Ni Cc: Eric Dong Cc: Jian J Wang

CpuException: Remove InitializeCpuInterruptHandlers

2022-06-10T07:54:48+00:00

InitializeCpuExceptionHandlers() expects caller allocates IDT while InitializeCpuInterruptHandlers() allocates 256 IDT entries itself. InitializeCpuExceptionHandlers() fills max 32 IDT entries allocated by caller. If caller allocates 10 entries, the API just fills 10 IDT entries. The inconsistency between the two APIs makes code hard to unerstand and hard to share. Because there is only one caller (CpuDxe) for InitializeCpuInterruptHandler(), this patch updates CpuDxe driver to allocates 256 IDT entries then call InitializeCpuExceptionHandlers(). This is also a backward compatible change. With this change, InitializeCpuInterruptHandlers() is removed completely. And InitializeCpuExceptionHandlers() fills max 32 entries for PEI and SMM instance, max 256 entries for DXE instance. Such behavior matches to the original one. Signed-off-by: Ray Ni Cc: Eric Dong

MdeModulePkg: Apply uncrustify changes

2021-12-07T17:24:28+00:00

REF: https://bugzilla.tianocore.org/show_bug.cgi?id=3737 Apply uncrustify changes to .c/.h files in the MdeModulePkg package Cc: Andrew Fish Cc: Leif Lindholm Cc: Michael D Kinney Signed-off-by: Michael Kubacki Reviewed-by: Liming Gao

MdeModulePkg: Replace BSD License with BSD+Patent License

2019-04-09T17:58:08+00:00

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 Reviewed-by: Hao Wu Reviewed-by: Jian J Wang

MdeModulePkg: Clean up source files

2018-06-28T03:19:45+00:00

1. Do not use tab characters 2. No trailing white space in one line 3. All files must end with CRLF Contributed-under: TianoCore Contribution Agreement 1.1 Signed-off-by: Liming Gao Reviewed-by: Star Zeng

MdeModulePkg/CpuExceptionHandlerLib.h: Add a new API InitializeCpuExceptionHandlersEx

2017-12-08T06:38:47+00:00

A new API InitializeCpuExceptionHandlersEx() is introduced to support initializing exception handlers with extra functionalities which need extra init data, such as stack switch for Stack Guard feature. EFI_STATUS EFIAPI InitializeCpuExceptionHandlersEx ( IN EFI_VECTOR_HANDOFF_INFO *VectorInfo OPTIONAL, IN CPU_EXCEPTION_INIT_DATA *InitData OPTIONAL ); By default, this method should include all functionalities implemented by InitializeCpuExceptionHandlers(), plus extra initialization works, if any. This is could be done by calling InitializeCpuExceptionHandlers() directly in this method besides the extra works. InitData is optional and its use and content are processor arch dependent. The typical usage of it is to convey resources which have to be reserved elsewhere and are necessary for the extra initialization of exception. Cc: Star Zeng Cc: Eric Dong Cc: Jiewen Yao Suggested-by: Ayellet Wolman Contributed-under: TianoCore Contribution Agreement 1.1 Signed-off-by: Jian J Wang Reviewed-by: Jeff Fan Reviewed-by: Jiewen.yao@intel.com

MdeModulePkg/CpuExceptionHandlerLib: Add DumpCpuContext()

2017-04-07T01:43:40+00:00

This API is used to display exception type and all processor context for debug purpose. Cc: Jiewen Yao Cc: Michael Kinney Cc: Feng Tian Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Jeff Fan Reviewed-by: Jiewen Yao