mirror of https://github.com/acidanthera/audk.git
d7a09cb86a
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 |
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| .. | ||
| BaseCacheMaintenanceLib | ||
| BaseCpuLib | ||
| BaseDebugLibNull | ||
| BaseDebugLibSerialPort | ||
| BaseDebugPrintErrorLevelLib | ||
| BaseExtractGuidedSectionLib | ||
| BaseIoLibIntrinsic | ||
| BaseLib | ||
| BaseMemoryLib | ||
| BaseMemoryLibMmx | ||
| BaseMemoryLibOptDxe | ||
| BaseMemoryLibOptPei | ||
| BaseMemoryLibRepStr | ||
| BaseMemoryLibSse2 | ||
| BaseOrderedCollectionRedBlackTreeLib | ||
| BasePalLibNull | ||
| BasePcdLibNull | ||
| BasePciCf8Lib | ||
| BasePciExpressLib | ||
| BasePciLibCf8 | ||
| BasePciLibPciExpress | ||
| BasePciSegmentInfoLibNull | ||
| BasePciSegmentLibPci | ||
| BasePeCoffExtraActionLibNull | ||
| BasePeCoffGetEntryPointLib | ||
| BasePeCoffLib | ||
| BasePerformanceLibNull | ||
| BasePostCodeLibDebug | ||
| BasePostCodeLibPort80 | ||
| BasePrintLib | ||
| BaseReportStatusCodeLibNull | ||
| BaseRngLib | ||
| BaseS3BootScriptLibNull | ||
| BaseS3IoLib | ||
| BaseS3PciLib | ||
| BaseS3PciSegmentLib | ||
| BaseS3SmbusLib | ||
| BaseS3StallLib | ||
| BaseSafeIntLib | ||
| BaseSerialPortLibNull | ||
| BaseSmbusLibNull | ||
| BaseStackCheckLib | ||
| BaseSynchronizationLib | ||
| BaseTimerLibNullTemplate | ||
| BaseUefiDecompressLib | ||
| DxeCoreEntryPoint | ||
| DxeCoreHobLib | ||
| DxeExtendedSalLib | ||
| DxeExtractGuidedSectionLib | ||
| DxeHobLib | ||
| DxeHstiLib | ||
| DxeIoLibCpuIo2 | ||
| DxeIoLibEsal | ||
| DxePalLibEsal | ||
| DxePcdLib | ||
| DxePciLibEsal | ||
| DxePciSegmentLibEsal | ||
| DxeRuntimeExtendedSalLib | ||
| DxeRuntimePciExpressLib | ||
| DxeSalLibEsal | ||
| DxeServicesLib | ||
| DxeServicesTableLib | ||
| DxeSmbusLib | ||
| DxeTimerLibEsal | ||
| PciSegmentLibSegmentInfo | ||
| PeiCoreEntryPoint | ||
| PeiDxePostCodeLibReportStatusCode | ||
| PeiExtractGuidedSectionLib | ||
| PeiHobLib | ||
| PeiIoLibCpuIo | ||
| PeiMemoryAllocationLib | ||
| PeiMemoryLib | ||
| PeiPalLib | ||
| PeiPcdLib | ||
| PeiPciLibPciCfg2 | ||
| PeiPciSegmentLibPciCfg2 | ||
| PeiResourcePublicationLib | ||
| PeiServicesLib | ||
| PeiServicesTablePointerLib | ||
| PeiServicesTablePointerLibIdt | ||
| PeiServicesTablePointerLibKr7 | ||
| PeiSmbusLibSmbus2Ppi | ||
| PeimEntryPoint | ||
| SecPeiDxeTimerLibCpu | ||
| SmiHandlerProfileLibNull | ||
| SmmIoLib | ||
| SmmIoLibSmmCpuIo2 | ||
| SmmLibNull | ||
| SmmMemLib | ||
| SmmMemoryAllocationLib | ||
| SmmPciExpressLib | ||
| SmmPciLibPciRootBridgeIo | ||
| SmmPeriodicSmiLib | ||
| SmmServicesTableLib | ||
| UefiApplicationEntryPoint | ||
| UefiBootServicesTableLib | ||
| UefiDebugLibConOut | ||
| UefiDebugLibDebugPortProtocol | ||
| UefiDebugLibStdErr | ||
| UefiDevicePathLib | ||
| UefiDevicePathLibDevicePathProtocol | ||
| UefiDriverEntryPoint | ||
| UefiFileHandleLib | ||
| UefiLib | ||
| UefiMemoryAllocationLib | ||
| UefiMemoryLib | ||
| UefiPalLib | ||
| UefiPciLibPciRootBridgeIo | ||
| UefiPciSegmentLibPciRootBridgeIo | ||
| UefiRuntimeLib | ||
| UefiRuntimeServicesTableLib | ||
| UefiSalLib | ||
| UefiScsiLib | ||
| UefiUsbLib | ||