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ac43bbacde
Add Null libs for Stack Check and Stack Check Failure Hook Lib that allow a platform to opt out of stack checks and the stack check failure hook lib. StackCheckLib allows implementation (or in this case null implementation) of stack checks on binaries. There is a Host Application specific version of this null lib because MSVC host applications must not be linked against our lib (so the file here is a no-op but that doesn't cause the build system to fail the build for not building a file for MSVC) as it links against the MSVC C runtime lib that provides the stack cookie definitions. GCC host applications do not link against such a C runtime lib and must be linked against our version. StackCheckFailureHookLib lets a platform do custom functionality when a stack check failure occurs (such as log it to a platform defined mechanism). The null lib simply returns. Signed-off-by: Oliver Smith-Denny <osde@linux.microsoft.com>
42 lines
1.5 KiB
INI
42 lines
1.5 KiB
INI
## @file
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# Null library instance for StackCheckLib which can be included
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# when a build needs to include stack check functions but does
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# not want to generate stack check failures.
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#
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# Copyright (c) Microsoft Corporation.
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# SPDX-License-Identifier: BSD-2-Clause-Patent
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##
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[Defines]
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INF_VERSION = 1.29
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BASE_NAME = StackCheckLibNull
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FILE_GUID = f6ef2763-ca3b-4c6f-a931-2a48de3ce352
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MODULE_TYPE = BASE
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VERSION_STRING = 1.0
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LIBRARY_CLASS = StackCheckLib
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[Sources]
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StackCheckLibNullGcc.c | GCC
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StackCheckLibNullMsvc.c | MSFT
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[Sources.IA32]
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IA32/StackCheckFunctionsMsvc.nasm | MSFT
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[Sources.X64]
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X64/StackCheckFunctionsMsvc.nasm | MSFT
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[Packages]
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MdePkg/MdePkg.dec
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[BuildOptions]
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# We cannot build the MSVC version with /GL (whole program optimization) because we run into linker error
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# LNK1237, which is a failure to link against a symbol from a library compiled with /GL. The whole program
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# optimization tries to do away with references to this symbol. The solution is to not compile the stack
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# check libs with /GL
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MSFT:*_*_*_CC_FLAGS = /GL-
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# We cannot build the GCC version with LTO (link time optimization) because we run into linker errors where
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# the stack cookie variable has been optimized away, as it looks to GCC like the variable is not used, because
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# the compiler inserts the usage.
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GCC:*_*_*_CC_FLAGS = -fno-lto
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