Tianocore/edk2.git/MdePkg/Library, branch dependabot/github_actions/actions/setup-python-7

MdePkg: BaseMemoryLib: Add memory barrier to SetMem

2026-07-18T15:04:29+00:00

The implementation adds a toolchain-specific compiler barriers to discourage reordering under aggressive optimization around memory setting operations. Signed-off-by: Kun Qin

MdePkg/UefiDevicePathLib: Check allocated buffer before use

2026-07-17T09:45:38+00:00

The allocated buffer NewStr should be checked if it's NULL to avoid null pointer dereference. Signed-off-by: Qihang Gao

MdePkg/UefiDevicePathLib: Fix the potential memory leak issue

2026-07-17T09:45:38+00:00

The function DevPathToTextUsbWWID() allocates NewStr when the input SerialNumber lacks a null terminator. However, this allocated memory is never freed after use, resulting in a memory leak. This patch adds the missing FreePool() for NewStr before the function returns, ensuring that the allocated buffer is properly freed and eliminating the potential leak. Signed-off-by: Qihang Gao

MdePkg/DynamicStackCookieEntryPointLib: Add LoongArch64 support

2026-07-07T08:49:21+00:00

Added LoongArch64 support. Currently, LoongArch64 doesn't supports TRNG, it uses the `RDTIME` instruction and a xorshif64 alorithms to compose a PRNG(RngLib). It may supports the SE TRNG in the future, and will change to the TRNG when SE support becomes available. Signed-off-by: Chao Li Cc: Michael D Kinney Cc: Liming Gao

MdePkg: Add LoongArch64 support for StackCheckLib

2026-07-07T08:49:21+00:00

Added LoongArch64 stack cookie interrupt instance, calling `CpuBreakpoint` to stop the CPU. Signed-off-by: Chao Li Cc: Michael D Kinney Cc: Liming Gao

MdePkg: DxeRiscvMpxyLib: Fix uninitialized variable warning

2026-06-24T14:49:50+00:00

In SbiMpxyGetShmemSize(), ShmemSize is not assigned in the failure path, but the caller may still access it. Initialize ShmemSize to zero to fix the uninitialized variable warning. Signed-off-by: Tuan Phan

MdePkg: Remove contructor from Mpxy Library

2026-06-09T10:10:44+00:00

Cases when MPXY extension is not present or it fails, the system boot fails. This is easily reproducible with Qemu master branch. Remove the constructor and let RAS agent client initialize the MPXY library and fail graceully in case of errors but the boot process continue. Signed-off-by: Himanshu Chauhan

MdePkg: Replace manual alignment checks with helper macros

2026-06-09T07:20:10+00:00

Replace manual alignment checks with IS_ALIGNED() and ADDRESS_IS_ALIGNED(). Convert the following bitmask and modulo forms: - ((E & ((PowOf2Expr) - ONE)) == ZERO) - ((E & ((PowOf2Expr) - ONE)) != ZERO) - ((E % (PowOf2Expr)) == ZERO) - ((E % (PowOf2Expr)) != ZERO) to the corresponding helper macro forms: + IS_ALIGNED (E, PowOf2Expr) + !IS_ALIGNED (E, PowOf2Expr) PowOf2Expr is limited to known power-of-two expressions, including SIZE_* and BASE_* macros, EFI_PAGE_SIZE, CPU_STACK_ALIGNMENT, RUNTIME_PAGE_ALLOCATION_GRANULARITY, sizeof() of UEFI integer types (e.g. BOOLEAN, CHAR16, UINT32, UINTN) and pointer types, and 1 << E1 expressions. Address checks that cast the checked value to UINTN are written with ADDRESS_IS_ALIGNED(). The change was generated with the Coccinelle semantic patch below. ```smpl @power_of_2_expr@ expression PowOf2Expr; expression E1; typedef BOOLEAN, CHAR8, CHAR16, INT8, UINT8, INT16, UINT16, INT32, UINT32, INT64, UINT64, INTN, UINTN; type ScalarType = { BOOLEAN, CHAR8, CHAR16, INT8, UINT8, INT16, UINT16, INT32, UINT32, INT64, UINT64, INTN, UINTN }; type AnyType; type PointerType = AnyType *; idexpression ScalarType ScalarValue; idexpression PointerType PointerValue; constant SizeBase =~ "^(SIZE|BASE)_(1|2|4|8|16|32|64|128|256|512)[KMGTPE]B$"; constant NamedPowerOf2 =~ "^(EFI_PAGE_SIZE|CPU_STACK_ALIGNMENT|RUNTIME_PAGE_ALLOCATION_GRANULARITY)$"; constant ONE = {1, 1U, 1u}; @@ ( ( SizeBase | NamedPowerOf2 | ONE << E1 | sizeof (ScalarType) | sizeof (PointerType) | sizeof (ScalarValue) | sizeof (PointerValue) ) & PowOf2Expr ) @aligned depends on power_of_2_expr disable is_zero,isnt_zero@ expression E; expression power_of_2_expr.PowOf2Expr; constant ONE = {1, 1U, 1u}; constant ZERO = {0, 0U, 0u}; @@ ( ((E & (E - ONE)) == ZERO) | - ((E & ((PowOf2Expr) - ONE)) == ZERO) + IS_ALIGNED (E, PowOf2Expr) | ((E & (E - ONE)) != ZERO) | - ((E & ((PowOf2Expr) - ONE)) != ZERO) + !IS_ALIGNED (E, PowOf2Expr) | - ((E % (PowOf2Expr)) == ZERO) + IS_ALIGNED (E, PowOf2Expr) | - ((E % (PowOf2Expr)) != ZERO) + !IS_ALIGNED (E, PowOf2Expr) ) @address_is_aligned@ typedef UINTN; expression *Address; expression Alignment; @@ - IS_ALIGNED ((UINTN) Address, Alignment) + ADDRESS_IS_ALIGNED (Address, Alignment) @normalize_aligned disable paren expression@ expression E, SZ; @@ ( - (IS_ALIGNED (E, SZ)) + IS_ALIGNED (E, SZ) | - (!IS_ALIGNED (E, SZ)) + !IS_ALIGNED (E, SZ) ) @normalize_macro_args disable paren expression@ expression E, SZ; @@ ( - IS_ALIGNED ((E), SZ) + IS_ALIGNED (E, SZ) | - IS_ALIGNED (E, (SZ)) + IS_ALIGNED (E, SZ) ) ``` Signed-off-by: Mingjie Shen

MdePkg/CompilerIntrinsicsLib: Add LoongArch64 __ashlti3

2026-06-08T08:40:19+00:00

GCC may emit a call to __ashlti3 for 128-bit left shifts when compiling code that uses unsigned __int128, such as OpenSSL Curve448 code in CryptoPkg. The LoongArch64 firmware build does not link against libgcc, so provide the helper from CompilerIntrinsicsLib. Implement __ashlti3 using the LoongArch64 ABI: the low and high 64-bit halves are passed in $a0 and $a1, the shift count is passed in $a2, and the result is returned in $a0 and $a1. Cc: Michael D Kinney Cc: Liming Gao Cc: Chao Li Signed-off-by: zhubo

MdePkg/BaseFdtLib: Add FdtStringListCount and FdtStringListSearch wrappers

2026-06-04T06:55:42+00:00

Add UEFI-native wrappers for libfdt string list count and search APIs. Signed-off-by: Thamballi Sreelalitha