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Sean Brogan d7a09cb86a MdePkg/BaseSafeIntLib: Add SafeIntLib class and instance 
https://bugzilla.tianocore.org/show_bug.cgi?id=798

SafeIntLib provides helper functions to prevent integer overflow
during type conversion, addition, subtraction, and multiplication.

Conversion Functions
====================
* Converting from a signed type to an unsigned type of the same
  size, or vice-versa.
* Converting to a smaller type that could possibly overflow.
* Converting from a signed type to a larger unsigned type.

Unsigned Addition, Subtraction, Multiplication
===============================================
* Unsigned integer math functions protect from overflow and
  underflow (in case of subtraction).

Signed Addition, Subtraction, Multiplication
============================================
* Strongly consider using unsigned numbers.
* Signed numbers are often used where unsigned numbers should
  be used. For example file sizes and array indices should always
  be unsigned. Subtracting a larger positive signed number from a
  smaller positive signed number with SafeInt32Sub() will succeed,
  producing a negative number, that then must not be used as an
  array index (but can occasionally be used as a pointer index.)
  Similarly for adding a larger magnitude negative number to a
  smaller magnitude positive number.
* SafeIntLib does not protect you from such errors. It tells you
  if your integer operations overflowed, not if you are doing the
  right thing with your non-overflowed integers.
* Likewise you can overflow a buffer with a non-overflowed
  unsigned index.

Based on content from the following branch/commits:
https://github.com/Microsoft/MS_UEFI/tree/share/MsCapsuleSupport
21ef3a321c
ca516b1a61
33bab4031a

Cc: Sean Brogan <sean.brogan@microsoft.com>
Cc: Jiewen Yao <jiewen.yao@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: Sean Brogan <sean.brogan@microsoft.com>
Reviewed-by: Liming Gao <liming.gao@intel.com>
 		2018-01-25 09:42:20 -08:00
..
BaseCacheMaintenanceLib MdePkg: Convert all .uni files to utf-8 2015-12-15 04:53:50 +00:00
BaseCpuLib MdePkg BaseCpuLib: Convert X64/CpuSleep.asm to NASM 2016-06-28 09:51:45 +08:00
BaseDebugLibNull MdePkg: Convert all .uni files to utf-8 2015-12-15 04:53:50 +00:00
BaseDebugLibSerialPort MdePkg: Convert all .uni files to utf-8 2015-12-15 04:53:50 +00:00
BaseDebugPrintErrorLevelLib MdePkg: Convert all .uni files to utf-8 2015-12-15 04:53:50 +00:00
BaseExtractGuidedSectionLib MdePkg: Fix some typing errors 2016-10-07 18:05:37 -07:00
BaseIoLibIntrinsic MdePkg/BaseIoLibIntrinsic: fix SEV (=unrolled) variants of IoWriteFifoXX() 2017-09-11 22:28:05 +02:00
BaseLib MdePkg/BaseLib: add attribute 'RETURNS_TWICE' to SetJump 2018-01-10 11:42:17 +08:00
BaseMemoryLib MdePkg/MemoryLib: Refine InternalMemSetMem16|32|64 functions logic 2016-12-22 16:17:16 +08:00
BaseMemoryLibMmx MdePkg/BaseMemoryLib*: check for zero length in ZeroMem () 2016-11-04 09:53:01 +00:00
BaseMemoryLibOptDxe MdePkg/BaseMemoryLib*: check for zero length in ZeroMem () 2016-11-04 09:53:01 +00:00
BaseMemoryLibOptPei MdePkg/BaseMemoryLib*: check for zero length in ZeroMem () 2016-11-04 09:53:01 +00:00
BaseMemoryLibRepStr MdePkg/BaseMemoryLib*: check for zero length in ZeroMem () 2016-11-04 09:53:01 +00:00
BaseMemoryLibSse2 MdePkg/BaseMemoryLib*: check for zero length in ZeroMem () 2016-11-04 09:53:01 +00:00
BaseOrderedCollectionRedBlackTreeLib MdePkg: Convert all .uni files to utf-8 2015-12-15 04:53:50 +00:00
BasePalLibNull MdePkg: Convert all .uni files to utf-8 2015-12-15 04:53:50 +00:00
BasePcdLibNull MdePkg: Follow PI1.4a to fix artificial limitation of SkuId range 2016-05-23 10:48:53 +08:00
BasePciCf8Lib MdePkg: Convert all .uni files to utf-8 2015-12-15 04:53:50 +00:00
BasePciExpressLib MdePkg: Convert all .uni files to utf-8 2015-12-15 04:53:50 +00:00
BasePciLibCf8 MdePkg: Convert all .uni files to utf-8 2015-12-15 04:53:50 +00:00
BasePciLibPciExpress MdePkg: Convert all .uni files to utf-8 2015-12-15 04:53:50 +00:00
BasePciSegmentInfoLibNull MdePkg/PciSegmentInfoLib: Add PciSegmentInfoLib class and instance. 2017-08-28 16:47:04 +08:00
BasePciSegmentLibPci MdePkg/PciSegmentLib: Fix typo in function header comments 2017-08-28 16:47:03 +08:00
BasePeCoffExtraActionLibNull MdePkg: Convert all .uni files to utf-8 2015-12-15 04:53:50 +00:00
BasePeCoffGetEntryPointLib PeCoffGetEntryPointLib: Fix spelling issue 2017-04-26 08:58:18 +08:00
BasePeCoffLib MdePkg: Refine casting expression result to bigger size 2017-03-06 14:18:45 +08:00
BasePerformanceLibNull MdePkg: Convert all .uni files to utf-8 2015-12-15 04:53:50 +00:00
BasePostCodeLibDebug MdePkg: Convert all .uni files to utf-8 2015-12-15 04:53:50 +00:00
BasePostCodeLibPort80 MdePkg: Convert all .uni files to utf-8 2015-12-15 04:53:50 +00:00
BasePrintLib MdePkg/BasePrintLib: Fix incomplete print output 2018-01-02 16:31:19 +08:00
BaseReportStatusCodeLibNull MdePkg: Convert all .uni files to utf-8 2015-12-15 04:53:50 +00:00
BaseRngLib MdePkg: Convert all .uni files to utf-8 2015-12-15 04:53:50 +00:00
BaseS3BootScriptLibNull MdePkg, MdeModulePkg: S3BootScriptSaveMemPoll(): accept 64-bit LoopTimes 2017-01-03 12:22:47 +01:00
BaseS3IoLib MdePkg: Convert all .uni files to utf-8 2015-12-15 04:53:50 +00:00
BaseS3PciLib MdePkg: Refine casting expression result to bigger size 2017-03-06 14:18:45 +08:00
BaseS3PciSegmentLib MdePkg: Correct BaseS3PciSegmentLib module name to match its uni file 2017-10-10 18:10:17 +08:00
BaseS3SmbusLib MdePkg: Convert all .uni files to utf-8 2015-12-15 04:53:50 +00:00
BaseS3StallLib MdePkg: Convert all .uni files to utf-8 2015-12-15 04:53:50 +00:00
BaseSafeIntLib MdePkg/BaseSafeIntLib: Add SafeIntLib class and instance 2018-01-25 09:42:20 -08:00
BaseSerialPortLibNull MdePkg: Convert all .uni files to utf-8 2015-12-15 04:53:50 +00:00
BaseSmbusLibNull MdePkg: Convert all .uni files to utf-8 2015-12-15 04:53:50 +00:00
BaseStackCheckLib MdePkg: Convert all .uni files to utf-8 2015-12-15 04:53:50 +00:00
BaseSynchronizationLib MdePkg/BaseSynchronizationLib: Fix function names in function headers 2016-11-17 17:08:26 -08:00
BaseTimerLibNullTemplate MdePkg: Convert all .uni files to utf-8 2015-12-15 04:53:50 +00:00
BaseUefiDecompressLib MdePkg: Fix Xcode 9 Beta treating 32-bit left shift as undefined 2017-08-11 08:47:00 +08:00
DxeCoreEntryPoint MdePkg: Convert all .uni files to utf-8 2015-12-15 04:53:50 +00:00
DxeCoreHobLib MdePkg HobLib: Add BuildFv3Hob API 2017-10-10 20:54:32 +08:00
DxeExtendedSalLib MdePkg: Convert all .uni files to utf-8 2015-12-15 04:53:50 +00:00
DxeExtractGuidedSectionLib MdePkg: Fix MSFT C4255 warning 2017-11-14 18:18:48 +08:00
DxeHobLib MdePkg HobLib: Add BuildFv3Hob API 2017-10-10 20:54:32 +08:00
DxeHstiLib MdePkg DxeHstiLib: Fix memory leak issue 2017-07-18 10:35:36 +08:00
DxeIoLibCpuIo2 MdePkg: Avoid Non-Boolean type used as Boolean 2017-01-20 15:40:59 +08:00
DxeIoLibEsal MdePkg/DxeIoLibEsal: Add new Fifo routines in IoLib class 2017-01-17 10:11:20 +08:00
DxePalLibEsal MdePkg: Convert all .uni files to utf-8 2015-12-15 04:53:50 +00:00
DxePcdLib MdePkg: Follow PI1.4a to fix artificial limitation of SkuId range 2016-05-23 10:48:53 +08:00
DxePciLibEsal MdePkg: Fix typos in comments 2016-10-21 16:40:51 +08:00
DxePciSegmentLibEsal MdePkg: Fix typos in comments 2016-10-21 16:40:51 +08:00
DxeRuntimeExtendedSalLib MdePkg: Convert all .uni files to utf-8 2015-12-15 04:53:50 +00:00
DxeRuntimePciExpressLib MdePkg: Convert all .uni files to utf-8 2015-12-15 04:53:50 +00:00
DxeSalLibEsal MdePkg: Convert all .uni files to utf-8 2015-12-15 04:53:50 +00:00
DxeServicesLib MdePkg DxeServicesLib: Handle potential NULL FvHandle 2017-05-08 08:57:03 +08:00
DxeServicesTableLib MdePkg: Convert all .uni files to utf-8 2015-12-15 04:53:50 +00:00
DxeSmbusLib MdePkg: Convert all .uni files to utf-8 2015-12-15 04:53:50 +00:00
DxeTimerLibEsal MdePkg: Convert all .uni files to utf-8 2015-12-15 04:53:50 +00:00
PciSegmentLibSegmentInfo MdePkg/PciSegmentLibSegmentInfo: fix typo in PciSegmentBitFieldAnd*() 2017-09-06 10:43:53 +08:00
PeiCoreEntryPoint MdePkg: Convert all .uni files to utf-8 2015-12-15 04:53:50 +00:00
PeiDxePostCodeLibReportStatusCode MdePkg PeiDxePostCodeLibReportStatusCode: Correct files with CRLF line ending 2016-07-29 09:18:12 +08:00
PeiExtractGuidedSectionLib MdePkg: Fix typos in comments 2016-10-21 16:40:51 +08:00
PeiHobLib MdePkg HobLib: Add BuildFv3Hob API 2017-10-10 20:54:32 +08:00
PeiIoLibCpuIo MdePkg/PeiIoLibCpuIo: Add new Fifo routines in IoLib class 2017-01-17 10:11:14 +08:00
PeiMemoryAllocationLib MdePkg PeiMemoryAllocationLib: Update InternalAllocateAlignedPages 2017-09-04 13:45:47 +08:00
PeiMemoryLib MdePkg/MemoryLib: Refine InternalMemSetMem16|32|64 functions logic 2016-12-22 16:17:16 +08:00
PeiPalLib MdePkg: Convert all .uni files to utf-8 2015-12-15 04:53:50 +00:00
PeiPcdLib MdePkg: Follow PI1.4a to fix artificial limitation of SkuId range 2016-05-23 10:48:53 +08:00
PeiPciLibPciCfg2 MdePkg: Fix typos in comments 2016-10-21 16:40:51 +08:00
PeiPciSegmentLibPciCfg2 MdePkg/PciSegmentLib: Fix typo in function header comments 2017-08-28 16:47:03 +08:00
PeiResourcePublicationLib MdePkg: Convert all .uni files to utf-8 2015-12-15 04:53:50 +00:00
PeiServicesLib MdePkg PeiServicesLib: Add PeiServicesFreePages 2017-09-04 13:45:46 +08:00
PeiServicesTablePointerLib MdePkg: Convert all .uni files to utf-8 2015-12-15 04:53:50 +00:00
PeiServicesTablePointerLibIdt MdePkg: Convert all .uni files to utf-8 2015-12-15 04:53:50 +00:00
PeiServicesTablePointerLibKr7 MdePkg: Convert all .uni files to utf-8 2015-12-15 04:53:50 +00:00
PeiSmbusLibSmbus2Ppi MdePkg: Convert all .uni files to utf-8 2015-12-15 04:53:50 +00:00
PeimEntryPoint MdePkg: Convert all .uni files to utf-8 2015-12-15 04:53:50 +00:00
SecPeiDxeTimerLibCpu MdePkg: Convert all .uni files to utf-8 2015-12-15 04:53:50 +00:00
SmiHandlerProfileLibNull MdePkg/SmiHandlerProfile: Add Context support in Unregister 2017-03-13 16:04:11 +08:00
SmmIoLib MdePkg SmmIoLib: Use NULL pointer check instead of useless Status check 2017-06-06 09:07:10 +08:00
SmmIoLibSmmCpuIo2 MdePkg: Avoid Non-Boolean type used as Boolean 2017-01-20 15:40:59 +08:00
SmmLibNull MdePkg: Convert all .uni files to utf-8 2015-12-15 04:53:50 +00:00
SmmMemLib MdePkg SmmMemLib: Remove ASSERT in SmmIsBufferOutsideSmmValid 2017-06-06 09:07:09 +08:00
SmmMemoryAllocationLib MdePkg: Refine casting expression result to bigger size 2017-03-06 14:18:45 +08:00
SmmPciExpressLib MdePkg: Add SMM PciExpressLib Instance 2016-09-27 11:01:23 +08:00
SmmPciLibPciRootBridgeIo MdePkg: Fix typos in comments 2016-10-21 16:40:51 +08:00
SmmPeriodicSmiLib MdePkg: Fix typos in comments 2016-10-21 16:40:51 +08:00
SmmServicesTableLib MdePkg: Convert all .uni files to utf-8 2015-12-15 04:53:50 +00:00
UefiApplicationEntryPoint MdePkg: Convert all .uni files to utf-8 2015-12-15 04:53:50 +00:00
UefiBootServicesTableLib MdePkg: Convert all .uni files to utf-8 2015-12-15 04:53:50 +00:00
UefiDebugLibConOut MdePkg: Convert all .uni files to utf-8 2015-12-15 04:53:50 +00:00
UefiDebugLibDebugPortProtocol MdePkg: Convert all .uni files to utf-8 2015-12-15 04:53:50 +00:00
UefiDebugLibStdErr MdePkg: Convert all .uni files to utf-8 2015-12-15 04:53:50 +00:00
UefiDevicePathLib MdePkg/UefiDevicePathLib: Add DevPathFromTextDns and DevPathToTextDns libraries 2017-08-14 13:18:23 +08:00
UefiDevicePathLibDevicePathProtocol MdePkg DevicePathLib: Validate before touch input buffer. 2016-11-09 17:49:15 +08:00
UefiDriverEntryPoint MdePkg: Convert all .uni files to utf-8 2015-12-15 04:53:50 +00:00
UefiFileHandleLib MdePkg/UefiFileHandleLib: Refine the check for valid Ascii character 2017-01-12 21:26:26 +08:00
UefiLib MdePkg/UefiLib: Avoid mis-calculate of graphic console size 2017-04-14 13:16:05 +08:00
UefiMemoryAllocationLib MdePkg: Refine casting expression result to bigger size 2017-03-06 14:18:45 +08:00
UefiMemoryLib MdePkg/MemoryLib: Refine InternalMemSetMem16|32|64 functions logic 2016-12-22 16:17:16 +08:00
UefiPalLib MdePkg: Convert all .uni files to utf-8 2015-12-15 04:53:50 +00:00
UefiPciLibPciRootBridgeIo MdePkg: Fix typos in comments 2016-10-21 16:40:51 +08:00
UefiPciSegmentLibPciRootBridgeIo MdePkg/PciSegmentLib: Fix typo in function header comments 2017-08-28 16:47:03 +08:00
UefiRuntimeLib MdePkg: Deprecate EFI_VARIABLE_AUTHENTICATED_WRITE_ACCESS 2017-11-01 22:25:18 +08:00
UefiRuntimeServicesTableLib MdePkg: Convert all .uni files to utf-8 2015-12-15 04:53:50 +00:00
UefiSalLib MdePkg: Convert all .uni files to utf-8 2015-12-15 04:53:50 +00:00
UefiScsiLib MdePkg UefiScsiLib: Raise the Tpl of async IO callback to TPL_NOTIFY 2015-12-22 13:58:09 +00:00
UefiUsbLib MdePkg: Fix some typing errors 2016-10-07 18:05:37 -07:00