178 lines
6.2 KiB
C
178 lines
6.2 KiB
C
/*
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* Copyright (c) 2012-2013 The Linux Foundation. All rights reserved.
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*
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* Previously licensed under the ISC license by Qualcomm Atheros, Inc.
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*
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*
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* Permission to use, copy, modify, and/or distribute this software for
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* any purpose with or without fee is hereby granted, provided that the
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* above copyright notice and this permission notice appear in all
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* copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL
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* WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE
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* AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
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* DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
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* PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
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* TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
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* PERFORMANCE OF THIS SOFTWARE.
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*/
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/*
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* This file was originally distributed by Qualcomm Atheros, Inc.
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* under proprietary terms before Copyright ownership was assigned
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* to the Linux Foundation.
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*/
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/*==========================================================================
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*
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* @file: aniCompiler.h
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*
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* @brief: This file tries to abstract the differences among compilers.
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* Supported compilers are:
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* ARM RVCT compiler
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*
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* @author: Kumar Anand
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*
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*
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*=========================================================================*/
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#ifndef __ANI_COMPILER_ABSTRACT_H
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#define __ANI_COMPILER_ABSTRACT_H
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/*
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* 1. GNU C/C++ Compiler
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*
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* How to detect gcc : __GNUC__
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* How to detect gcc version :
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* major version : __GNUC__ (2 = 2.x, 3 = 3.x, 4 = 4.x)
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* minor version : __GNUC_MINOR__
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*
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* 2. Microsoft C/C++ Compiler
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*
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* How to detect msc : _MSC_VER
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* How to detect msc version :
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* _MSC_VER (1200 = MSVC 6.0, 1300 = MSVC 7.0, ...)
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*
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* 3. Intel C/C++ Compiler
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*
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* How to detect icc : __INTEL_COMPILER, __ICC (legacy), __ECC (legacy)
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* How to detect icc version :
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* __INTEL_COMPILER, __ICC, __ECC (700 = 7.0, 900 = 9.0, ...)
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*
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* 4. Other compilers (not supported)
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*
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* Borland : __BORLANDC__
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* Greenhills : __ghs
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* Metrowerks : __MWERKS__
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* SGI MIPSpro : __sgi
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*/
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/*
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* Packing directives : These are used to force compiler to pack bits and
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* bytes in the data structure. C standard does not regulate this strictly,
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* and many things are to compiler implementation. Many compilers support
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* compiler specific directives or options that allow different packing
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* and alignment.
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*
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* Alignment directives : Compiler may think packed data structures have
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* no specific alignment requirement. Then compiler may generate multiple
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* byte accesses to access two byte or four bytes data structures. This
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* affects on performance especially for RISC systems. If some data
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* structure is located on specific alignment always, alignment directives
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* help compiler generate more efficient codes.
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*/
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#undef __ANI_COMPILER_PRAGMA_PACK_STACK
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#undef __ANI_COMPILER_PRAGMA_PACK
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#if defined(_MSC_VER)
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#define __ANI_COMPILER_PRAGMA_PACK_STACK 1
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#define __ANI_COMPILER_PRAGMA_PACK 1
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#define __ani_attr_pre_packed
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#define __ani_attr_packed
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#define __ani_attr_aligned_2
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#define __ani_attr_aligned_4
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#define __ani_attr_aligned_8
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#define __ani_attr_aligned_16
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#define __ani_attr_aligned_32
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#define PACKED
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#define PACKED_POST
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#define ALIGN(__value)
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#elif defined(__INTEL_COMPILER) || defined(__ICC) || defined(__ECC)
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#define __ANI_COMPILER_PRAGMA_PACK 1
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#define __ani_attr_pre_packed
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#define __ani_attr_packed
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#define __ani_attr_aligned_2
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#define __ani_attr_aligned_4
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#define __ani_attr_aligned_8
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#define __ani_attr_aligned_16
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#define __ani_attr_aligned_32
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#define PACKED
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#define PACKED_POST
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#define ALIGN(__value)
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#elif defined(__GNUC__)
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#define __ani_attr_pre_packed
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#define __ani_attr_packed __attribute__((packed))
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#define __ani_attr_aligned_2 __attribute__((aligned(2)))
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#define __ani_attr_aligned_4 __attribute__((aligned(4)))
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#define __ani_attr_aligned_8 __attribute__((aligned(8)))
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#define __ani_attr_aligned_16 __attribute__((aligned(16)))
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#define __ani_attr_aligned_32 __attribute__((aligned(32)))
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#ifndef PACKED
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#define PACKED
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#endif
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#ifndef PACKED_POST
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#define PACKED_POST __attribute__((packed))
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#endif
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#ifndef ALIGN
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#define ALIGN(__value) __attribute__((aligned(__value)))
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#endif
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#elif defined(ANI_COMPILER_TYPE_RVCT)
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/* Nothing defined so far */
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/*
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* RIVA 1.2 and Pronto uses ARMCT5.1 compiler and it throws lot of warning when __align() is used in structure definitions.
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* __attribute__((aligned())) is GNU compiler attribute that is accepted by ARM compiler and resolves the warnings.
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*/
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#if (__ARMCC_VERSION > 400000)
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#define __ani_attr_packed
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#define __ani_attr_pre_packed __packed
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#define __ani_attr_aligned_2 __attribute__((aligned(2)))
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#define __ani_attr_aligned_4 __attribute__((aligned(4)))
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#define __ani_attr_aligned_8 __attribute__((aligned(8)))
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#define __ani_attr_aligned_16 __attribute__((aligned(16)))
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#define __ani_attr_aligned_32 __attribute__((aligned(32)))
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#define PACKED __packed
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#define PACKED_POST
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#define ALIGN(__value) __align(__value)
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#define PREPACK __packed
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#define POSTPACK
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#else
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#define __ani_attr_packed
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#define __ani_attr_pre_packed __packed
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#define __ani_attr_aligned_2 __align(2)
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#define __ani_attr_aligned_4 __align(4)
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#define __ani_attr_aligned_8 __align(8)
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#define __ani_attr_aligned_16 __align(16)
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#define __ani_attr_aligned_32 __align(32)
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#define PACKED __packed
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#define PACKED_POST
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#define ALIGN(__value) __align(__value)
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#endif
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#else
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#error "Unknown compiler"
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#endif
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#ifndef PACKED_PRE
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#define PACKED_PRE __ani_attr_pre_packed
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#endif
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#ifndef ALIGN_4
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#define ALIGN_4 __ani_attr_aligned_4
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#endif
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#endif //__ANI_COMPILER_ABSTRACT_H
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