/** * Copyright (c) 2016 - 2017, Nordic Semiconductor ASA * * All rights reserved. * * Redistribution and use in source and binary forms, with or without modification, * are permitted provided that the following conditions are met: * * 1. Redistributions of source code must retain the above copyright notice, this * list of conditions and the following disclaimer. * * 2. Redistributions in binary form, except as embedded into a Nordic * Semiconductor ASA integrated circuit in a product or a software update for * such product, must reproduce the above copyright notice, this list of * conditions and the following disclaimer in the documentation and/or other * materials provided with the distribution. * * 3. Neither the name of Nordic Semiconductor ASA nor the names of its * contributors may be used to endorse or promote products derived from this * software without specific prior written permission. * * 4. This software, with or without modification, must only be used with a * Nordic Semiconductor ASA integrated circuit. * * 5. Any software provided in binary form under this license must not be reverse * engineered, decompiled, modified and/or disassembled. * * THIS SOFTWARE IS PROVIDED BY NORDIC SEMICONDUCTOR ASA "AS IS" AND ANY EXPRESS * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES * OF MERCHANTABILITY, NONINFRINGEMENT, AND FITNESS FOR A PARTICULAR PURPOSE ARE * DISCLAIMED. IN NO EVENT SHALL NORDIC SEMICONDUCTOR ASA OR CONTRIBUTORS BE * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. * */ #ifndef NRF_SVCI_H__ #define NRF_SVCI_H__ #include "stdint.h" #include "compiler_abstraction.h" #ifdef __cplusplus extern "C" { #endif #define NRF_SVCI_SVC_NUM 0 /**< SVC number used for all SVCI functions. */ #define NRF_SVCI_SVC_NUM_INVALID (0xFFFFFFFF) /**< Invalid SVCI number. */ #if defined (__CC_ARM) #define SVCI_DECL(svci_num, return_type, function_name, ...) \ return_type __svc_indirect(NRF_SVCI_SVC_NUM) svci_##function_name(uint32_t _svci_num, ##__VA_ARGS__); #elif defined (__GNUC__) #ifdef __cplusplus #define GCC_CAST_CPP (uint8_t) #else #define GCC_CAST_CPP #endif #define SVCI_DECL(svci_num, return_type, function_name, ...) \ _Pragma("GCC diagnostic push") \ _Pragma("GCC diagnostic ignored \"-Wreturn-type\"") \ __attribute__((naked, unused)) \ static return_type function_name(uint32_t svci_num, \ __VA_ARGS__) \ { \ __asm __volatile ( \ "mov r12, %1\n\t" \ "svc %0\n\t" \ "bx r14\n\t" \ : /* no output */ \ : "I" (GCC_CAST_CPP NRF_SVCI_SVC_NUM), "r" (svci_num) \ : "r12" /* do we need to clobber? */ \ ); \ } \ _Pragma("GCC diagnostic pop") #elif defined (__ICCARM__) #define SVCI_DECL(svci_num, return_type, function_name, ...) \ /* Suppress return value warming. */ \ _Pragma("diag_suppress=Pe940") \ static return_type function_name(uint32_t svci_num, \ __VA_ARGS__) \ { \ __asm volatile ( \ "mov r12, %1\n\t" \ "svc %0\n\t" \ "bx r14\n\t" \ : /* no output */ \ : "I" (NRF_SVCI_SVC_NUM), "r" (svci_num) \ : "r12" /* do we need to clobber? */ \ ); \ } #else #define SVCI_DECL(svci_number, return_type, function_name, ...) #endif #define VA_NARGS_IMPL(_0, _1, _2, _3, _4, _5, _6, _7, _8, N, ...) N #define VA_NARGS(...) VA_NARGS_IMPL(__VA_ARGS__, 4, 4, 3, 3, 2, 2, 1, 1, 0) #ifdef SVC_INTERFACE_CALL_AS_NORMAL_FUNCTION #define SVCI_0(svci_num, return_type, function_name) \ return_type function_name(void) #define SVCI_1(svci_num, return_type, function_name, p0t, p0n) \ return_type function_name(p0t p0n) #define SVCI_2(svci_num, return_type, function_name, p0t, p0n, p1t, p1n) \ return_type function_name(p0t p0n, p1t p1n) #define SVCI_3(svci_num, return_type, function_name, p0t, p0n, p1t, p1n, p2t, p2n) \ return_type function_name(p0t p0n, p1t p1n, p2t p2n) #define SVCI_4(svci_num, return_type, function_name, p0t, p0n, p1t, p1n, p2t, p2n, p3t, p3n) \ return_type function_name(p0t p0n, p1t p1n, p2t p2n, p3t p3n) #else #define SVCI_0(svci_num, return_type, function_name) \ SVCI_DECL(svci_num, return_type, function_name) \ static __INLINE return_type function_name(void) {return svci_##function_name(svci_num);} #define SVCI_1(svci_num, return_type, function_name, p0t, p0n) \ SVCI_DECL(svci_num, return_type, function_name, p0t p0n) \ static __INLINE return_type function_name(p0t p0n) {return svci_##function_name(svci_num, p0n);} #define SVCI_2(svci_num, return_type, function_name, p0t, p0n, p1t, p1n) \ SVCI_DECL(svci_num, return_type, function_name, p0t p0n, p1t p1n) \ static __INLINE return_type function_name(p0t p0n, p1t p1n) {return svci_##function_name(svci_num, p0n, p1n);} #define SVCI_3(svci_num, return_type, function_name, p0t, p0n, p1t, p1n, p2t, p2n) \ SVCI_DECL(svci_num, return_type, function_name, p0t p0n, p1t p1n, p2t p2n) \ static __INLINE return_type function_name(p0t p0n, p1t p1n, p2t p2n) {return svci_##function_name(svci_num, p0n, p1n, p2n);} #define SVCI_4(svci_num, return_type, function_name, p0t, p0n, p1t, p1n, p2t, p2n, p3t, p3n) \ SVCI_DECL(svci_num, return_type, function_name, p0t p0n, p1t p1n, p2t p2n, p3t p3n) \ static __INLINE return_type function_name(p0t p0n, p1t p1n, p2t p2n, p3t p3n) {return svci_##function_name(svci_num, p0n, p1n, p2n, p3n);} #endif // SVCALL_AS_NORMAL_FUNCTION #define SVCI_IMPLI(count, svci_num, return_type, function_name, ...) SVCI##_##count (svci_num, return_type, function_name, ##__VA_ARGS__) #define SVCI_IMPL(count, svci_num, return_type, function_name, ...) SVCI_IMPLI(count, svci_num, return_type, function_name, ##__VA_ARGS__) #define SVCI(svci_num, return_type, function_name, ...) SVCI_IMPL(VA_NARGS(__VA_ARGS__), svci_num, return_type, function_name, ##__VA_ARGS__) #ifdef __cplusplus } #endif #endif // NRF_SVCI_H__