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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 _SW_ISR_TABLE__H_
#define _SW_ISR_TABLE__H_
#include <arch/cpu.h>
#ifdef __cplusplus
extern "C" {
#endif
#if !defined(_ASMLANGUAGE)
#include <zephyr/types.h>
#include <toolchain.h>
/*
* 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 {
void *arg;
void (*isr)(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 */
s32_t irq;
/** Flags for this IRQ, see ISR_FLAG_* definitions */
s32_t flags;
/** ISR to call */
void *func;
/** Parameter for non-direct IRQs */
void *param;
};
/** This interrupt gets put directly in the vector table */
#define ISR_FLAG_DIRECT (1 << 0)
#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 _ISR_DECLARE(irq, flags, func, param) \
static struct _isr_list _GENERIC_SECTION(.intList) __used \
_MK_ISR_NAME(func, __COUNTER__) = \
{irq, flags, &func, (void *)param}
#define IRQ_TABLE_SIZE (CONFIG_NUM_IRQS - CONFIG_GEN_IRQ_START_VECTOR)
#endif /* _ASMLANGUAGE */
#ifdef __cplusplus
}
#endif
#endif /* _SW_ISR_TABLE__H_ */
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