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/*
* The MIT License (MIT)
*
* Copyright (c) 2019 Ha Thach (tinyusb.org)
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*
* This file is part of the TinyUSB stack.
*/
/** \ingroup Group_Common
* \defgroup Group_Compiler Compiler
* \brief Group_Compiler brief
* @{ */
#ifndef _TUSB_COMPILER_H_
#define _TUSB_COMPILER_H_
#define STRING_(x) #x ///< stringify without expand
#define XSTRING_(x) STRING_(x) ///< expand then stringify
#define STRING_CONCAT_(a, b) a##b ///< concat without expand
#define XSTRING_CONCAT_(a, b) STRING_CONCAT_(a, b) ///< expand then concat
#if defined __COUNTER__ && __COUNTER__ != __COUNTER__
#define _TU_COUNTER_ __COUNTER__
#else
#define _TU_COUNTER_ __LINE__
#endif
// Compile-time Assert
#if __STDC_VERSION__ >= 201112L
#define TU_VERIFY_STATIC _Static_assert
#else
#define TU_VERIFY_STATIC(const_expr, _mess) enum { XSTRING_CONCAT_(_verify_static_, _TU_COUNTER_) = 1/(!!(const_expr)) }
#endif
//--------------------------------------------------------------------+
// Compiler porting with Attribute and Endian
//--------------------------------------------------------------------+
#if defined(__GNUC__)
#define ATTR_ALIGNED(Bytes) __attribute__ ((aligned(Bytes)))
#define ATTR_SECTION(sec_name) __attribute__ ((section(#sec_name)))
#define ATTR_PACKED __attribute__ ((packed))
#define ATTR_PREPACKED
#define ATTR_WEAK __attribute__ ((weak))
#define ATTR_DEPRECATED(mess) __attribute__ ((deprecated(mess))) // warn if function with this attribute is used
#define ATTR_UNUSED __attribute__ ((unused)) // Function/Variable is meant to be possibly unused
// Endian conversion use well-known host to network (big endian) naming
#if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
#define tu_htonl(u32) __builtin_bswap32(u32)
#define tu_ntohl(u32) __builtin_bswap32(u32)
#define tu_htons(u16) __builtin_bswap16(u16)
#define tu_ntohs(u16) __builtin_bswap16(u16)
#else
#define tu_htonl(u32) (u32)
#define tu_ntohl(u32) (u32)
#define tu_htons(u16) (u16)
#define tu_ntohs(u16) (u16)
#endif
#else
#error "Compiler attribute porting are required"
#endif
#endif /* _TUSB_COMPILER_H_ */
/// @}
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