nrf_svc.h

00001 /* 
00002  * Copyright (c) Nordic Semiconductor ASA
00003  * All rights reserved.
00004  * 
00005  * Redistribution and use in source and binary forms, with or without modification,
00006  * are permitted provided that the following conditions are met:
00007  * 
00008  *   1. Redistributions of source code must retain the above copyright notice, this
00009  *   list of conditions and the following disclaimer.
00010  * 
00011  *   2. Redistributions in binary form must reproduce the above copyright notice, this
00012  *   list of conditions and the following disclaimer in the documentation and/or
00013  *   other materials provided with the distribution.
00014  * 
00015  *   3. Neither the name of Nordic Semiconductor ASA nor the names of other
00016  *   contributors to this software may be used to endorse or promote products
00017  *   derived from this software without specific prior written permission.
00018  * 
00019  *   4. This software must only be used in a processor manufactured by Nordic
00020  *   Semiconductor ASA, or in a processor manufactured by a third party that
00021  *   is used in combination with a processor manufactured by Nordic Semiconductor.
00022  * 
00023  * 
00024  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
00025  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
00026  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
00027  * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
00028  * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
00029  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
00030  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
00031  * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
00032  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
00033  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
00034  * 
00035  */
00036  
00037 #ifndef NRF_SVC__
00038 #define NRF_SVC__
00039 
00040 #ifdef SVCALL_AS_NORMAL_FUNCTION
00041 #define SVCALL(number, return_type, signature) return_type signature
00042 #else
00043 
00044 #ifndef SVCALL
00045 #if defined (__CC_ARM)
00046 #define SVCALL(number, return_type, signature) return_type __svc(number) signature
00047 #elif defined (__GNUC__)
00048 #define SVCALL(number, return_type, signature) \
00049   _Pragma("GCC diagnostic ignored \"-Wunused-function\"") \
00050   _Pragma("GCC diagnostic push") \
00051   _Pragma("GCC diagnostic ignored \"-Wreturn-type\"") \
00052   __attribute__((naked)) static return_type signature \
00053   { \
00054     __asm( \
00055         "svc %0\n" \
00056         "bx r14" : : "I" ((uint32_t)number) : "r0" \
00057     ); \
00058   }    \
00059   _Pragma("GCC diagnostic pop")
00060 #elif defined (__ICCARM__)
00061 #define PRAGMA(x) _Pragma(#x)
00062 #define SVCALL(number, return_type, signature) \
00063 PRAGMA(swi_number = number) \
00064  __swi return_type signature;
00065 #else
00066 #define SVCALL(number, return_type, signature) return_type signature  
00067 #endif
00068 #endif  // SVCALL
00069 
00070 #endif  // SVCALL_AS_NORMAL_FUNCTION
00071 #endif  // NRF_SVC__