Hi, Please help review this patch.
MdePkg: Add RETURN_ADDRESS macro into Base.h Based on compiler intrinsic function. MSVC: _ReturnAddress GCC: __builtin_return_address Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Zeng, Star <[email protected]<mailto:[email protected]>> Index: MdePkg/Include/Base.h =================================================================== --- MdePkg/Include/Base.h (revision 16230) +++ MdePkg/Include/Base.h (working copy) @@ -6,7 +6,7 @@ environment. There are a set of base libraries in the Mde Package that can be used to implement base modules. -Copyright (c) 2006 - 2013, Intel Corporation. All rights reserved.<BR> +Copyright (c) 2006 - 2014, Intel Corporation. All rights reserved.<BR> Portions copyright (c) 2008 - 2009, Apple Inc. All rights reserved.<BR> This program and the accompanying materials are licensed and made available under the terms and conditions of the BSD License @@ -1016,5 +1016,26 @@ #define SIGNATURE_64(A, B, C, D, E, F, G, H) \ (SIGNATURE_32 (A, B, C, D) | ((UINT64) (SIGNATURE_32 (E, F, G, H)) << 32)) +#if defined(_MSC_EXTENSIONS) + // + // Intrinsic function provides the address of the instruction in the calling + // function that will be executed after control returns to the caller. + // + #pragma intrinsic(_ReturnAddress) + #define RETURN_ADDRESS _ReturnAddress() +#elif defined(__GNUC__) + // + // Built-in Function returns the return address of the current function, + // or of one of its callers. + // + void * __builtin_return_address (unsigned int level); + #define RETURN_ADDRESS __builtin_return_address (0) +#else + // + // Compilers don't support this feature. + // + #define RETURN_ADDRESS ((VOID *) 0) #endif +#endif +
RETURN_ADDRESS.patch
Description: RETURN_ADDRESS.patch
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