| /* |
| * Copyright (c) 2018 Lexmark International, Inc. |
| * |
| * SPDX-License-Identifier: Apache-2.0 |
| */ |
| |
| /** |
| * @file |
| * @brief Exception/interrupt context helpers for Cortex-A and Cortex-R CPUs |
| * |
| * Exception/interrupt context helpers. |
| */ |
| |
| #ifndef ZEPHYR_ARCH_ARM_INCLUDE_CORTEX_A_R_EXCEPTION_H_ |
| #define ZEPHYR_ARCH_ARM_INCLUDE_CORTEX_A_R_EXCEPTION_H_ |
| |
| #include <zephyr/arch/cpu.h> |
| |
| #ifdef _ASMLANGUAGE |
| |
| /* nothing */ |
| |
| #else |
| |
| #include <zephyr/irq_offload.h> |
| |
| #ifdef __cplusplus |
| extern "C" { |
| #endif |
| |
| #ifdef CONFIG_IRQ_OFFLOAD |
| extern volatile irq_offload_routine_t offload_routine; |
| #endif |
| |
| /* Check the CPSR mode bits to see if we are in IRQ or FIQ mode */ |
| static ALWAYS_INLINE bool arch_is_in_isr(void) |
| { |
| return (arch_curr_cpu()->nested != 0U); |
| } |
| |
| static ALWAYS_INLINE bool arch_is_in_nested_exception(const z_arch_esf_t *esf) |
| { |
| return (arch_curr_cpu()->arch.exc_depth > 1U) ? (true) : (false); |
| } |
| |
| #if defined(CONFIG_USERSPACE) |
| /* |
| * This function is used by privileged code to determine if the thread |
| * associated with the stack frame is in user mode. |
| */ |
| static ALWAYS_INLINE bool z_arm_preempted_thread_in_user_mode(const z_arch_esf_t *esf) |
| { |
| return ((esf->basic.xpsr & CPSR_M_Msk) == CPSR_M_USR); |
| } |
| #endif |
| |
| #ifndef CONFIG_USE_SWITCH |
| extern void z_arm_cortex_r_svc(void); |
| #endif |
| |
| #ifdef __cplusplus |
| } |
| #endif |
| |
| #endif /* _ASMLANGUAGE */ |
| |
| #endif /* ZEPHYR_ARCH_ARM_INCLUDE_CORTEX_A_R_EXCEPTION_H_ */ |