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9441de4c38
This release is used in conjunction with the linux-sgx-driver Intial release: https://github.com/01org/linux-sgx-driver commit-id: 0e865ce5e6b297a787bcdc12d98bada8174be6d7 Intel-id: 33399 Signed-off-by: Angie Chinchilla <angie.v.chinchilla@intel.com>
133 lines
5.0 KiB
C
133 lines
5.0 KiB
C
/* $OpenBSD: cdefs.h,v 1.34 2012/08/14 20:11:37 matthew Exp $ */
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/* $NetBSD: cdefs.h,v 1.16 1996/04/03 20:46:39 christos Exp $ */
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/*
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* Copyright (c) 1991, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* Berkeley Software Design, Inc.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)cdefs.h 8.7 (Berkeley) 1/21/94
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*/
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#ifndef _SYS_CDEFS_H_
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#define _SYS_CDEFS_H_
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/* Declaration field in C/C++ headers */
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#if defined(__cplusplus)
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# define __BEGIN_DECLS extern "C" {
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# define __END_DECLS }
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#else
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# define __BEGIN_DECLS
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# define __END_DECLS
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#endif
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#if defined(__STDC__) || defined(__cplusplus)
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# define __CONCAT(x,y) x ## y
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# define __STRING(x) #x
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#else
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# define __CONCAT(x,y) x/**/y
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# define __STRING(x) "x"
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#endif
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/*
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* Macro to test if we're using a specific version of gcc or later.
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*/
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#if defined __GNUC__ && defined __GNUC_MINOR_
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# define __GNUC_PREREQ__(ma, mi) \
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((__GNUC__ > (ma)) || (__GNUC__ == (ma) && __GNUC_MINOR__ >= (mi)))
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#else
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# define __GNUC_PREREQ__(ma, mi) 0
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#endif
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/* Calling Convention: cdecl */
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#define _TLIBC_CDECL_
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/* Thread Directive */
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#define _TLIBC_THREAD_ /* __thread */
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/* Deprecated Warnings */
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#define _TLIBC_DEPRECATED_MSG(x) __STRING(x)" is deprecated in tlibc."
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#define _TLIBC_DEPRECATED_(x) __attribute__((deprecated(_TLIBC_DEPRECATED_MSG(x))))
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#ifndef _TLIBC_WARN_DEPRECATED_FUNCTIONS_
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# define _TLIBC_DEPRECATED_FUNCTION_(__ret, __func, ...)
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#else
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# define _TLIBC_DEPRECATED_FUNCTION_(__ret, __func, ...) \
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_TLIBC_DEPRECATED_(__func) \
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__ret __func(__VA_ARGS__)
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#endif
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/* Static analysis for printf format strings.
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* _MSC_PRINTF_FORMAT_: MSVC SAL annotation for specifying format strings.
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* _GCC_PRINTF_FORMAT_(x, y): GCC declaring attribute for checking format strings.
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* x - index of the format string. In C++ non-static method, index 1 is reseved for 'this'.
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* y - index of first variadic agrument in '...'.
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*/
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#define _GCC_PRINTF_FORMAT_(x, y) __attribute__((__format__ (printf, x, y)))
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/* Attribute - noreturn */
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#define _TLIBC_NORETURN_ __attribute__ ((__noreturn__))
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/*
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* GNU C version 2.96 adds explicit branch prediction so that
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* the CPU back-end can hint the processor and also so that
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* code blocks can be reordered such that the predicted path
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* sees a more linear flow, thus improving cache behavior, etc.
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*
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* The following two macros provide us with a way to utilize this
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* compiler feature. Use __predict_true() if you expect the expression
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* to evaluate to true, and __predict_false() if you expect the
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* expression to evaluate to false.
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*
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* A few notes about usage:
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*
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* * Generally, __predict_false() error condition checks (unless
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* you have some _strong_ reason to do otherwise, in which case
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* document it), and/or __predict_true() `no-error' condition
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* checks, assuming you want to optimize for the no-error case.
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*
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* * Other than that, if you don't know the likelihood of a test
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* succeeding from empirical or other `hard' evidence, don't
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* make predictions.
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*
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* * These are meant to be used in places that are run `a lot'.
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* It is wasteful to make predictions in code that is run
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* seldomly (e.g. at subsystem initialization time) as the
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* basic block reordering that this affects can often generate
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* larger code.
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*/
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#if defined(__GNUC__) && __GNUC_PREREQ__(2, 96)
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#define __predict_true(exp) __builtin_expect(((exp) != 0), 1)
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#define __predict_false(exp) __builtin_expect(((exp) != 0), 0)
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#else
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#define __predict_true(exp) ((exp) != 0)
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#define __predict_false(exp) ((exp) != 0)
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#endif
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#endif /* !_SYS_CDEFS_H_ */
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