160 lines
6.2 KiB
C
160 lines
6.2 KiB
C
/*
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* The MIT License (MIT)
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*
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* Copyright (c) 2019 Ha Thach (tinyusb.org)
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*
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* This file is part of the TinyUSB stack.
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*/
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/** \ingroup Group_Common
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* \defgroup Group_Compiler Compiler
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* \brief Group_Compiler brief
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* @{ */
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#ifndef _TUSB_COMPILER_H_
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#define _TUSB_COMPILER_H_
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#define TU_STRING(x) #x ///< stringify without expand
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#define TU_XSTRING(x) TU_STRING(x) ///< expand then stringify
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#define TU_STRCAT(a, b) a##b ///< concat without expand
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#define TU_XSTRCAT(a, b) TU_STRCAT(a, b) ///< expand then concat
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#if defined __COUNTER__ && __COUNTER__ != __COUNTER__
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#define _TU_COUNTER_ __COUNTER__
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#else
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#define _TU_COUNTER_ __LINE__
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#endif
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// Compile-time Assert
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#if __STDC_VERSION__ >= 201112L
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#define TU_VERIFY_STATIC _Static_assert
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#else
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#define TU_VERIFY_STATIC(const_expr, _mess) enum { TU_XSTRCAT(_verify_static_, _TU_COUNTER_) = 1/(!!(const_expr)) }
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#endif
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// for declaration of reserved field, make use of _TU_COUNTER_
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#define TU_RESERVED TU_XSTRCAT(reserved, _TU_COUNTER_)
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#define TU_LITTLE_ENDIAN (0x12u)
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#define TU_BIG_ENDIAN (0x21u)
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//--------------------------------------------------------------------+
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// Compiler porting with Attribute and Endian
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//--------------------------------------------------------------------+
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#if defined(__GNUC__)
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#define TU_ATTR_ALIGNED(Bytes) __attribute__ ((aligned(Bytes)))
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#define TU_ATTR_SECTION(sec_name) __attribute__ ((section(#sec_name)))
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#define TU_ATTR_PACKED __attribute__ ((packed))
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#define TU_ATTR_PREPACKED
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#define TU_ATTR_WEAK __attribute__ ((weak))
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#define TU_ATTR_DEPRECATED(mess) __attribute__ ((deprecated(mess))) // warn if function with this attribute is used
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#define TU_ATTR_UNUSED __attribute__ ((unused)) // Function/Variable is meant to be possibly unused
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#define TU_ATTR_USED __attribute__ ((used)) // Function/Variable is meant to be used
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// Endian conversion use well-known host to network (big endian) naming
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#if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
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#define TU_BYTE_ORDER TU_LITTLE_ENDIAN
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#else
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#define TU_BYTE_ORDER TU_BIG_ENDIAN
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#endif
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#define TU_BSWAP16(u16) (__builtin_bswap16(u16))
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#define TU_BSWAP32(u32) (__builtin_bswap32(u32))
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#elif defined(__TI_COMPILER_VERSION__)
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#define TU_ATTR_ALIGNED(Bytes) __attribute__ ((aligned(Bytes)))
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#define TU_ATTR_SECTION(sec_name) __attribute__ ((section(#sec_name)))
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#define TU_ATTR_PACKED __attribute__ ((packed))
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#define TU_ATTR_PREPACKED
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#define TU_ATTR_WEAK __attribute__ ((weak))
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#define TU_ATTR_DEPRECATED(mess) __attribute__ ((deprecated(mess))) // warn if function with this attribute is used
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#define TU_ATTR_UNUSED __attribute__ ((unused)) // Function/Variable is meant to be possibly unused
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#define TU_ATTR_USED __attribute__ ((used))
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// __BYTE_ORDER is defined in the TI ARM compiler, but not MSP430 (which is little endian)
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#if ((__BYTE_ORDER__) == (__ORDER_LITTLE_ENDIAN__)) || defined(__MSP430__)
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#define TU_BYTE_ORDER TU_LITTLE_ENDIAN
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#else
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#define TU_BYTE_ORDER TU_BIG_ENDIAN
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#endif
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#define TU_BSWAP16(u16) (__builtin_bswap16(u16))
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#define TU_BSWAP32(u32) (__builtin_bswap32(u32))
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#elif defined(__ICCARM__)
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#define TU_ATTR_ALIGNED(Bytes) __attribute__ ((aligned(Bytes)))
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#define TU_ATTR_SECTION(sec_name) __attribute__ ((section(#sec_name)))
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#define TU_ATTR_PACKED __attribute__ ((packed))
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#define TU_ATTR_PREPACKED
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#define TU_ATTR_WEAK __attribute__ ((weak))
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#define TU_ATTR_DEPRECATED(mess) __attribute__ ((deprecated(mess))) // warn if function with this attribute is used
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#define TU_ATTR_UNUSED __attribute__ ((unused)) // Function/Variable is meant to be possibly unused
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#define TU_ATTR_USED __attribute__ ((used)) // Function/Variable is meant to be used
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// Endian conversion use well-known host to network (big endian) naming
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#if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
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#define TU_BYTE_ORDER TU_LITTLE_ENDIAN
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#else
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#define TU_BYTE_ORDER TU_BIG_ENDIAN
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#endif
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#define TU_BSWAP16(u16) (__iar_builtin_REV16(u16))
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#define TU_BSWAP32(u32) (__iar_builtin_REV(u32))
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#else
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#error "Compiler attribute porting is required"
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#endif
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#if (TU_BYTE_ORDER == TU_LITTLE_ENDIAN)
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#define tu_htons(u16) (TU_BSWAP16(u16))
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#define tu_ntohs(u16) (TU_BSWAP16(u16))
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#define tu_htonl(u32) (TU_BSWAP32(u32))
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#define tu_ntohl(u32) (TU_BSWAP32(u32))
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#define tu_htole16(u16) (u16)
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#define tu_le16toh(u16) (u16)
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#define tu_htole32(u32) (u32)
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#define tu_le32toh(u32) (u32)
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#elif (TU_BYTE_ORDER == TU_BIG_ENDIAN)
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#define tu_htons(u16) (u16)
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#define tu_ntohs(u16) (u16)
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#define tu_htonl(u32) (u32)
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#define tu_ntohl(u32) (u32)
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#define tu_htole16(u16) (tu_bswap16(u16))
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#define tu_le16toh(u16) (tu_bswap16(u16))
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#define tu_htole32(u32) (tu_bswap32(u32))
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#define tu_le32toh(u32) (tu_bswap32(u32))
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#else
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#error Byte order is undefined
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#endif
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#endif /* _TUSB_COMPILER_H_ */
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/// @}
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