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Justine Tunney 2020-06-15 07:18:57 -07:00
commit c91b3c5006
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libc/nt/thunk/msabi.h Normal file
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#ifndef COSMOPOLITAN_LIBC_NT_THUNK_MSABI_H_
#define COSMOPOLITAN_LIBC_NT_THUNK_MSABI_H_
#if !(__ASSEMBLER__ + __LINKER__ + 0)
/**
* Defines function as using Microsoft x64 calling convention.
*
* This can be used to define prototypes that allow modern compilers to
* generate code that calls MS ABI functions directly, without needing
* to jump through the assembly thunks.
*/
#if __GNUC__ * 100 + __GNUC_MINOR_ >= 408 || \
(__has_attribute(__ms_abi__) || defined(__llvm__))
#define __msabi __attribute__((__ms_abi__))
#endif
/**
* Returns true if header should provide MS-ABI overrides.
*/
#ifndef ShouldUseMsabiAttribute
#if defined(__msabi) && defined(NDEBUG) && !defined(__STRICT_ANSI__)
#define ShouldUseMsabiAttribute() 1
#else
#define ShouldUseMsabiAttribute() 0
#endif
#endif
#endif /* !(__ASSEMBLER__ + __LINKER__ + 0) */
#endif /* COSMOPOLITAN_LIBC_NT_THUNK_MSABI_H_ */