85 lines
2.1 KiB
C
85 lines
2.1 KiB
C
/*
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* Copyright (c) 2014, Wind River Systems, Inc.
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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/**
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* @file
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* @brief Software-managed ISR table
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*
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* Data types for a software-managed ISR table, with a parameter per-ISR.
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*/
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#ifndef ZEPHYR_INCLUDE_SW_ISR_TABLE_H_
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#define ZEPHYR_INCLUDE_SW_ISR_TABLE_H_
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#ifdef __cplusplus
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extern "C" {
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#endif
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#if !defined(_ASMLANGUAGE)
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#include <zephyr/types.h>
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#include <toolchain.h>
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/*
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* Note the order: arg first, then ISR. This allows a table entry to be
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* loaded arg -> r0, isr -> r3 in _isr_wrapper with one ldmia instruction,
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* on ARM Cortex-M (Thumb2).
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*/
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struct _isr_table_entry {
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void *arg;
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void (*isr)(void *);
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};
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/* The software ISR table itself, an array of these structures indexed by the
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* irq line
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*/
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extern struct _isr_table_entry _sw_isr_table[];
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/*
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* Data structure created in a special binary .intlist section for each
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* configured interrupt. gen_irq_tables.py pulls this out of the binary and
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* uses it to create the IRQ vector table and the _sw_isr_table.
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*
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* More discussion in include/linker/intlist.ld
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*/
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struct _isr_list {
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/** IRQ line number */
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s32_t irq;
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/** Flags for this IRQ, see ISR_FLAG_* definitions */
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s32_t flags;
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/** ISR to call */
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void *func;
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/** Parameter for non-direct IRQs */
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void *param;
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};
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/** This interrupt gets put directly in the vector table */
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#define ISR_FLAG_DIRECT BIT(0)
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#define _MK_ISR_NAME(x, y) __isr_ ## x ## _irq_ ## y
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/* Create an instance of struct _isr_list which gets put in the .intList
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* section. This gets consumed by gen_isr_tables.py which creates the vector
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* and/or SW ISR tables.
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*/
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#define Z_ISR_DECLARE(irq, flags, func, param) \
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static struct _isr_list Z_GENERIC_SECTION(.intList) __used \
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_MK_ISR_NAME(func, __COUNTER__) = \
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{irq, flags, &func, (void *)param}
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#define IRQ_TABLE_SIZE (CONFIG_NUM_IRQS - CONFIG_GEN_IRQ_START_VECTOR)
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#ifdef CONFIG_DYNAMIC_INTERRUPTS
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void z_isr_install(unsigned int irq, void (*routine)(void *), void *param);
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#endif
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#endif /* _ASMLANGUAGE */
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#ifdef __cplusplus
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}
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#endif
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#endif /* ZEPHYR_INCLUDE_SW_ISR_TABLE_H_ */
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