blob: aa1388bdcbfdf0b2e1c5e6dab58741e02a1cd601 [file] [log] [blame]
/*
* Copyright (c) 2012-2013 The Linux Foundation. All rights reserved.
*
* Previously licensed under the ISC license by Qualcomm Atheros, Inc.
*
*
* Permission to use, copy, modify, and/or distribute this software for
* any purpose with or without fee is hereby granted, provided that the
* above copyright notice and this permission notice appear in all
* copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL
* WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE
* AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
* DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
* PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
* TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
* PERFORMANCE OF THIS SOFTWARE.
*/
/*
* This file was originally distributed by Qualcomm Atheros, Inc.
* under proprietary terms before Copyright ownership was assigned
* to the Linux Foundation.
*/
/*
* Compiler abstraction layer
*
*
*
* This file tries to abstract the differences among compilers.
* Supported compilers are :
*
* - GNU C/C++ compiler
* - Microsoft C/C++ compiler
* - Intel C/C++ compiler
*
* Written by Ho Lee
*/
#ifndef __ANI_COMPILER_ABSTRACT_H
#define __ANI_COMPILER_ABSTRACT_H
/*
* 1. GNU C/C++ Compiler
*
* How to detect gcc : __GNUC__
* How to detect gcc version :
* major version : __GNUC__ (2 = 2.x, 3 = 3.x, 4 = 4.x)
* minor version : __GNUC_MINOR__
*
* 2. Microsoft C/C++ Compiler
*
* How to detect msc : _MSC_VER
* How to detect msc version :
* _MSC_VER (1200 = MSVC 6.0, 1300 = MSVC 7.0, ...)
*
* 3. Intel C/C++ Compiler
*
* How to detect icc : __INTEL_COMPILER, __ICC (legacy), __ECC (legacy)
* How to detect icc version :
* __INTEL_COMPILER, __ICC, __ECC (700 = 7.0, 900 = 9.0, ...)
*
* 4. Other compilers (not supported)
*
* Borland : __BORLANDC__
* Greenhills : __ghs
* Metrowerks : __MWERKS__
* SGI MIPSpro : __sgi
*/
/*
* Packing directives : These are used to force compiler to pack bits and
* bytes in the data structure. C standard does not regulate this strictly,
* and many things are to compiler implementation. Many compilers support
* compiler specific directives or options that allow different packing
* and alignment.
*
* Alignment directives : Compiler may think packed data structures have
* no specific alignment requirement. Then compiler may generate multiple
* byte accesses to access two byte or four bytes data structures. This
* affects on performance especially for RISC systems. If some data
* structure is located on specific alignment always, alignment directives
* help compiler generate more efficient codes.
*/
#undef __ANI_COMPILER_PRAGMA_PACK_STACK
#undef __ANI_COMPILER_PRAGMA_PACK
#if defined(_MSC_VER)
#define __ANI_COMPILER_PRAGMA_PACK_STACK 1
#define __ANI_COMPILER_PRAGMA_PACK 1
#define __ani_attr_pre_packed
#define __ani_attr_packed
#define __ani_attr_aligned_2
#define __ani_attr_aligned_4
#define __ani_attr_aligned_8
#define __ani_attr_aligned_16
#define __ani_attr_aligned_32
#elif defined(__INTEL_COMPILER) || defined(__ICC) || defined(__ECC)
#define __ANI_COMPILER_PRAGMA_PACK 1
#define __ani_attr_pre_packed
#define __ani_attr_packed
#define __ani_attr_aligned_2
#define __ani_attr_aligned_4
#define __ani_attr_aligned_8
#define __ani_attr_aligned_16
#define __ani_attr_aligned_32
#elif defined(__GNUC__)
#define __ani_attr_pre_packed
#define __ani_attr_packed __packed
#define __ani_attr_aligned_2 __attribute__((aligned(2)))
#define __ani_attr_aligned_4 __attribute__((aligned(4)))
#define __ani_attr_aligned_8 __attribute__((aligned(8)))
#define __ani_attr_aligned_16 __attribute__((aligned(16)))
#define __ani_attr_aligned_32 __attribute__((aligned(32)))
#elif defined(ANI_COMPILER_TYPE_RVCT)
/* Nothing defined so far */
#define __ani_attr_packed
#define __ani_attr_pre_packed __packed
#define __ani_attr_aligned_2 __align(2)
#define __ani_attr_aligned_4 __align(4)
#define __ani_attr_aligned_8 __align(8)
#define __ani_attr_aligned_16 __align(16)
#define __ani_attr_aligned_32 __align(32)
#else
#error "Unknown compiler"
#endif
#if defined(ANI_DATAPATH_SECTION)
#define __DP_SRC_RX __attribute__((section(".dpsrcrx")))
#define __DP_SRC_TX __attribute__((section(".dpsrctx")))
#define __DP_SRC __attribute__((section(".dpsrc")))
#define __ANIHDD_MODULE __attribute__((section(".anihdd")))
#else
#define __DP_SRC_RX
#define __DP_SRC_TX
#define __DP_SRC
#define __ANIHDD_MODULE
#endif
#endif