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/* * Copyright (c) 2014, Wind River Systems, Inc. * * SPDX-License-Identifier: Apache-2.0 */ /** * @file * @brief Software-managed ISR table * * Data types for a software-managed ISR table, with a parameter per-ISR. */ #ifndef ZEPHYR_INCLUDE_SW_ISR_TABLE_H_ #define ZEPHYR_INCLUDE_SW_ISR_TABLE_H_ #if !defined(_ASMLANGUAGE) #include <zephyr/types.h> #include <toolchain.h> #ifdef __cplusplus extern "C" { #endif /* * Note the order: arg first, then ISR. This allows a table entry to be * loaded arg -> r0, isr -> r3 in _isr_wrapper with one ldmia instruction, * on ARM Cortex-M (Thumb2). */ struct _isr_table_entry { const void *arg; void (*isr)(const void *); }; /* The software ISR table itself, an array of these structures indexed by the * irq line */ extern struct _isr_table_entry _sw_isr_table[]; /* * Data structure created in a special binary .intlist section for each * configured interrupt. gen_irq_tables.py pulls this out of the binary and * uses it to create the IRQ vector table and the _sw_isr_table. * * More discussion in include/linker/intlist.ld */ struct _isr_list { /** IRQ line number */ int32_t irq; /** Flags for this IRQ, see ISR_FLAG_* definitions */ int32_t flags; /** ISR to call */ void *func; /** Parameter for non-direct IRQs */ const void *param; }; /** This interrupt gets put directly in the vector table */ #define ISR_FLAG_DIRECT BIT(0) #define _MK_ISR_NAME(x, y) __MK_ISR_NAME(x, y) #define __MK_ISR_NAME(x, y) __isr_ ## x ## _irq_ ## y /* Create an instance of struct _isr_list which gets put in the .intList * section. This gets consumed by gen_isr_tables.py which creates the vector * and/or SW ISR tables. */ #define Z_ISR_DECLARE(irq, flags, func, param) \ static Z_DECL_ALIGN(struct _isr_list) Z_GENERIC_SECTION(.intList) \ __used _MK_ISR_NAME(func, __COUNTER__) = \ {irq, flags, (void *)&func, (const void *)param} #define IRQ_TABLE_SIZE (CONFIG_NUM_IRQS - CONFIG_GEN_IRQ_START_VECTOR) #ifdef CONFIG_DYNAMIC_INTERRUPTS void z_isr_install(unsigned int irq, void (*routine)(const void *), const void *param); #endif #ifdef __cplusplus } #endif #endif /* _ASMLANGUAGE */ #endif /* ZEPHYR_INCLUDE_SW_ISR_TABLE_H_ */ |