//***************************************************************************** // // am_reg_macros_asm.h //! @file //! //! @brief Inline assembly macros. Initially for critical section handling in //! protecting hardware registers. // //***************************************************************************** //***************************************************************************** // // Copyright (c) 2020, Ambiq Micro // 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 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 the copyright holder nor the names of its // contributors may be used to endorse or promote products derived from this // software without specific prior written permission. // // Third party software included in this distribution is subject to the // additional license terms as defined in the /docs/licenses directory. // // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" // AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE // IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE // ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER 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. // // This is part of revision 2.4.2 of the AmbiqSuite Development Package. // //***************************************************************************** #ifndef AM_REG_MACROS_ASM_H #define AM_REG_MACROS_ASM_H #ifdef __cplusplus extern "C" { #endif //***************************************************************************** // // Critical section assembly macros // // These macros implement critical section protection using inline assembly // for various compilers. They are intended to be used in other register // macros or directly in sections of code. // // Important usage note: These macros create a local scope and therefore MUST // be used in pairs. // //***************************************************************************** #define AM_CRITICAL_BEGIN \ if ( 1 ) \ { \ volatile uint32_t ui32Primask_04172010; \ ui32Primask_04172010 = am_hal_interrupt_master_disable(); #define AM_CRITICAL_END \ am_hal_interrupt_master_set(ui32Primask_04172010); \ } //***************************************************************************** // // A collection of some common inline assembly instructions / intrinsics. // //***************************************************************************** // // AM_ASM_BKPT(n) // #if (defined (__ARMCC_VERSION)) && (__ARMCC_VERSION < 6000000) #define AM_ASM_BKPT(n) __breakpoint(n) #elif (defined (__ARMCC_VERSION)) && (__ARMCC_VERSION >= 6000000) #define AM_ASM_BKPT(n) __asm(" bkpt "#n); #elif defined(__GNUC_STDC_INLINE__) #define AM_ASM_BKPT(n) __asm(" bkpt "#n); #elif defined(__IAR_SYSTEMS_ICC__) #define AM_ASM_BKPT(n) asm(" bkpt "#n); #else #error Compiler is unknown, please contact Ambiq support team #endif // // AM_ASM_WFI // #if (defined (__ARMCC_VERSION)) && (__ARMCC_VERSION < 6000000) #define AM_ASM_WFI __wfi(); #elif (defined (__ARMCC_VERSION)) && (__ARMCC_VERSION >= 6000000) #define AM_ASM_WFI __asm(" wfi"); #elif defined(__GNUC_STDC_INLINE__) #define AM_ASM_WFI __asm(" wfi"); #elif defined(__IAR_SYSTEMS_ICC__) #define AM_ASM_WFI asm(" wfi"); #else #error Compiler is unknown, please contact Ambiq support team #endif // // AM_ASM_WFE // #if (defined (__ARMCC_VERSION)) && (__ARMCC_VERSION < 6000000) #define AM_ASM_WFE __wfe(); #elif (defined (__ARMCC_VERSION)) && (__ARMCC_VERSION >= 6000000) #define AM_ASM_WFE __asm(" wfe"); #elif defined(__GNUC_STDC_INLINE__) #define AM_ASM_WFE __asm(" wfe"); #elif defined(__IAR_SYSTEMS_ICC__) #define AM_ASM_WFE asm(" wfe"); #else #error Compiler is unknown, please contact Ambiq support team #endif // // AM_ASM_SEV // #if (defined (__ARMCC_VERSION)) && (__ARMCC_VERSION < 6000000) #define AM_ASM_SEV __sev(); #elif (defined (__ARMCC_VERSION)) && (__ARMCC_VERSION >= 6000000) #define AM_ASM_SEV __asm(" sev"); #elif defined(__GNUC_STDC_INLINE__) #define AM_ASM_SEV __asm(" sev"); #elif defined(__IAR_SYSTEMS_ICC__) #define AM_ASM_SEV asm(" sev"); #else #error Compiler is unknown, please contact Ambiq support team #endif // // AM_ASM_NOP // #if (defined (__ARMCC_VERSION)) && (__ARMCC_VERSION < 6000000) #define AM_ASM_NOP __nop(); #elif (defined (__ARMCC_VERSION)) && (__ARMCC_VERSION >= 6000000) #define AM_ASM_NOP __asm(" nop"); #elif defined(__GNUC_STDC_INLINE__) #define AM_ASM_NOP __asm(" nop"); #elif defined(__IAR_SYSTEMS_ICC__) #define AM_ASM_NOP asm(" nop"); #else #error Compiler is unknown, please contact Ambiq support team #endif // // AM_ASM_DSB // In cmsis_armcc.h, __DSB() is defined as __dsb(0xF). // #if (defined (__ARMCC_VERSION)) && (__ARMCC_VERSION < 6000000) #define AM_ASM_DSB __dsb(15); #elif (defined (__ARMCC_VERSION)) && (__ARMCC_VERSION >= 6000000) #define AM_ASM_DSB __asm(" dsb #15"); #elif defined(__GNUC_STDC_INLINE__) #define AM_ASM_DSB __asm(" dsb #15"); #elif defined(__IAR_SYSTEMS_ICC__) #define AM_ASM_DSB asm(" dsb #15"); #else #error Compiler is unknown, please contact Ambiq support team #endif // // AM_ASM_ISB // In cmsis_armcc.h, __ISB() is defined as __isb(0xF). // #if (defined (__ARMCC_VERSION)) && (__ARMCC_VERSION < 6000000) #define AM_ASM_ISB __isb(15); #elif (defined (__ARMCC_VERSION)) && (__ARMCC_VERSION >= 6000000) #define AM_ASM_ISB __asm(" isb #15"); #elif defined(__GNUC_STDC_INLINE__) #define AM_ASM_ISB __asm(" isb #15"); #elif defined(__IAR_SYSTEMS_ICC__) #define AM_ASM_ISB asm(" isb #15"); #else #error Compiler is unknown, please contact Ambiq support team #endif #ifdef __cplusplus } #endif #endif // AM_REG_MACROS_ASM_H