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eb40cb371d
This change implements a new approach to function call logging, that's based on the GCC flag: -fpatchable-function-entry. Read the commentary in build/config.mk to learn how it works.
37 lines
1.1 KiB
C
37 lines
1.1 KiB
C
#ifndef COSMOPOLITAN_LIBC_NT_THUNK_MSABI_H_
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#define COSMOPOLITAN_LIBC_NT_THUNK_MSABI_H_
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#if !(__ASSEMBLER__ + __LINKER__ + 0)
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#ifdef __x86_64__
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#if !defined(__STRICT_ANSI__) && \
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(__GNUC__ * 100 + __GNUC_MINOR__ >= 408 || \
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(__has_attribute(__ms_abi__) || defined(__llvm__)))
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/**
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* Defines function as using Microsoft x64 calling convention.
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*
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* This can be used to define prototypes that allow modern compilers to
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* generate code that calls MS ABI functions directly, without needing
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* to jump through the assembly thunks.
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*/
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#define __msabi __attribute__((__ms_abi__))
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#endif
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/*
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* Returns true if header should provide MS-ABI overrides.
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*/
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#ifndef ShouldUseMsabiAttribute
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#if defined(__msabi) && defined(NDEBUG) && !defined(__PG__) && !defined(FTRACE)
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#define ShouldUseMsabiAttribute() 1
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#else
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#define ShouldUseMsabiAttribute() 0
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#endif
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#endif
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#else
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#define __msabi
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#ifndef ShouldUseMsabiAttribute
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#define ShouldUseMsabiAttribute() 0
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#endif
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#endif /* __x86_64__ */
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#endif /* !(__ASSEMBLER__ + __LINKER__ + 0) */
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#endif /* COSMOPOLITAN_LIBC_NT_THUNK_MSABI_H_ */
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