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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. * */ /** @file * * @defgroup sdk_nrf_svci Supervisor instructions with indirect number * @{ * @ingroup app_common * * @brief Macros to create Supervisor instructions using indirect number. */ #ifndef NRF_SVCI_H__ #define NRF_SVCI_H__ #include "stdint.h" #include "compiler_abstraction.h" #include "app_util.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. */ #ifdef __cplusplus #define GCC_CAST_CPP (uint16_t) #else #define GCC_CAST_CPP #endif #if (__LINT__ != 1) #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__); #define SVCI_DECL_0(svci_num, return_type, function_name) \ return_type __svc_indirect(NRF_SVCI_SVC_NUM) \ svci_ ## function_name(uint32_t _svci_num); #define SVCI_0(svci_num, return_type, function_name) \ SVCI_DECL_0(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); \ } #else #if defined (__GNUC__) #define SVCI_DECL_0(svci_num, return_type, function_name) \ _Pragma("GCC diagnostic push") \ _Pragma("GCC diagnostic ignored \"-Wreturn-type\"") \ __attribute__((naked, unused)) \ static return_type svci_ ## function_name(void) \ { \ /* Do the SuperVisor call by using svc instruction with \ R12 containing the SVCI number */ \ __ASM __volatile \ ( \ " ldr r12, =%0 \n" \ " svc %1 \n" \ " bx lr \n" \ " .ltorg" \ : /* output */ \ : /* input */ \ "X"(svci_num), \ "I"(GCC_CAST_CPP NRF_SVCI_SVC_NUM) \ : /* clobbers */ \ "r12" \ ); \ } \ _Pragma("GCC diagnostic pop") #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 svci_ ## function_name(__VA_ARGS__) \ { \ /* Do the SuperVisor call by using svc instruction with \ R12 containing the SVCI number */ \ __ASM __volatile \ ( \ " ldr.w r12, =%0 \n" \ " svc %1 \n" \ " bx lr \n" \ " .ltorg" \ : /* output */ \ : /* input */ \ "X"(svci_num), \ "I"(GCC_CAST_CPP NRF_SVCI_SVC_NUM) \ : /* clobbers */ \ "r12" \ ); \ } \ _Pragma("GCC diagnostic pop") #elif defined (__ICCARM__) #define SVCI_DECL_0(svci_num, return_type, function_name) \ /* Suppress return value warning. */ \ _Pragma("diag_suppress=Pe940") \ static __root return_type svci_ ## function_name(void) \ { \ /* Do the SuperVisor call by using svc instruction with \ R12 containing the SVCI number */ \ __ASM volatile \ ( \ " mov r12, %0 \n" \ " svc %1 \n" \ : /*no output*/ \ : "r" (svci_num), "I" (NRF_SVCI_SVC_NUM) \ : \ ); \ } #define SVCI_DECL(svci_num, return_type, function_name, ...) \ /* Suppress return value warning. */ \ _Pragma("diag_suppress=Pe940") \ static __root return_type svci_ ## function_name(__VA_ARGS__) \ { \ /* We stack r0-r3 as r0 is used to set high register (r12) \ This CODE MUST BE IN ITS OWN __ASM BLOCK! */ \ __ASM volatile ( "push {r0, r1, r2, r3}\n\t" ); \ /* Set R12 to the svc_number, this will use r0 as indirect \ * storage. Pop r0-r3 to reset value before SVCI. */ \ __ASM volatile \ ( \ " mov r12, %0 \n" \ " pop {r0, r1, r2, r3} \n" \ : /*no output */ \ : "r" (svci_num) \ : \ ); \ /* Do the SuperVisor call by using svc instruction with \ R12 containing the SVCI number */ \ __ASM volatile \ ( \ " svc %0 \n" \ " bx lr \n" \ : /*no output*/ \ : "I" (NRF_SVCI_SVC_NUM) \ : \ ); \ } #else // Not defined (__ICCARM__) or defined (__GNUC__) #error Unsupported compiler for SVCI interface #endif // Not defined (__ICCARM__) or defined (__GNUC__) #define SVCI_0(svci_num, return_type, function_name) \ SVCI_DECL_0(svci_num, return_type, function_name) \ static __INLINE return_type function_name(void) \ { \ return svci_ ## function_name(); \ } #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(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(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(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(p0n, p1n, p2n, p3n); \ } #endif // Not __CC_ARM #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 SVCALL_INDIRECT_AS_NORMAL_FUNCTION #define SVCI(svci_num, return_type, function_name, ...) \ return_type function_name(##__VA_ARGS__) #else #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__) #endif // SVCALL_INDIRECT_AS_NORMAL_FUNCTION #else // (__LINT__ == 1) #define SVCI(svci_num, return_type, function_name, ...) #endif #ifdef __cplusplus } #endif #endif // NRF_SVCI_H__ /** @} */