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https://github.com/meshtastic/firmware.git
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deb7c274c4
Note: This idea is originally from @caveman99 and should be credited as such. Submitting as a separate PR so the work in meshtastic/firmware#4148 can be a bit cleaner and Seeed boards can build while that work is ongoing. The nrf52 boards that depend on the v7 softdevice all use the same code and linker files. Rather than duplicate the code, keep it all together with the platform.
99 lines
4.7 KiB
C
99 lines
4.7 KiB
C
/*
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* Copyright (c) Nordic Semiconductor ASA
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without modification,
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* are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form, except as embedded into a Nordic
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* Semiconductor ASA integrated circuit in a product or a software update for
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* such product, must reproduce the above copyright notice, this list of
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* conditions and the following disclaimer in the documentation and/or other
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* materials provided with the distribution.
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*
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* 3. Neither the name of Nordic Semiconductor ASA nor the names of its
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* contributors may be used to endorse or promote products derived from this
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* software without specific prior written permission.
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*
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* 4. This software, with or without modification, must only be used with a
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* Nordic Semiconductor ASA integrated circuit.
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*
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* 5. Any software provided in binary form under this license must not be reverse
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* engineered, decompiled, modified and/or disassembled.
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*
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* THIS SOFTWARE IS PROVIDED BY NORDIC SEMICONDUCTOR ASA "AS IS" AND ANY EXPRESS
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* OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY, NONINFRINGEMENT, AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL NORDIC SEMICONDUCTOR ASA OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
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* GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
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* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef NRF_SVC__
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#define NRF_SVC__
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#include "stdint.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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/** @brief Supervisor call declaration.
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*
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* A call to a function marked with @ref SVCALL, will trigger a Supervisor Call (SVC) Exception.
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* The SVCs with SVC numbers 0x00-0x0F are forwared to the application. All other SVCs are handled by the SoftDevice.
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*
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* @param[in] number The SVC number to be used.
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* @param[in] return_type The return type of the SVC function.
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* @param[in] signature Function signature. The function can have at most four arguments.
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*/
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#ifdef SVCALL_AS_NORMAL_FUNCTION
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#define SVCALL(number, return_type, signature) return_type signature
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#else
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#ifndef SVCALL
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#if defined(__CC_ARM)
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#define SVCALL(number, return_type, signature) return_type __svc(number) signature
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#elif defined(__GNUC__)
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#ifdef __cplusplus
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#define GCC_CAST_CPP (uint16_t)
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#else
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#define GCC_CAST_CPP
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#endif
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#define SVCALL(number, return_type, signature) \
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_Pragma("GCC diagnostic push") _Pragma("GCC diagnostic ignored \"-Wreturn-type\"") __attribute__((naked)) \
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__attribute__((unused)) static return_type signature \
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{ \
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__asm("svc %0\n" \
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"bx r14" \
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: \
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: "I"(GCC_CAST_CPP number) \
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: "r0"); \
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} \
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_Pragma("GCC diagnostic pop")
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#elif defined(__ICCARM__)
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#define PRAGMA(x) _Pragma(#x)
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#define SVCALL(number, return_type, signature) \
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PRAGMA(swi_number = (number)) \
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__swi return_type signature;
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#else
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#define SVCALL(number, return_type, signature) return_type signature
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#endif
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#endif // SVCALL
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#endif // SVCALL_AS_NORMAL_FUNCTION
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#ifdef __cplusplus
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}
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#endif
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#endif // NRF_SVC__
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