55 lines
1.7 KiB
C
55 lines
1.7 KiB
C
/*
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* Copyright (c) 2017 Intel Corporation.
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#include <toolchain.h>
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#include <linker/sections.h>
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#include <sw_isr_table.h>
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#include <arch/cpu.h>
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/* There is an additional member at the end populated by the linker script
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* which indicates the number of interrupts specified
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*/
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struct int_list_header {
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u32_t table_size;
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u32_t offset;
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};
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/* These values are not included in the resulting binary, but instead form the
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* header of the initList section, which is used by gen_isr_tables.py to create
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* the vector and sw isr tables,
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*/
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_GENERIC_SECTION(.irq_info) struct int_list_header _iheader = {
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.table_size = IRQ_TABLE_SIZE,
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.offset = CONFIG_GEN_IRQ_START_VECTOR,
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};
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/* These are placeholder tables. They will be replaced by the real tables
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* generated by gen_isr_tables.py.
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*
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* _irq_spurious and _isr_wrapper are used as placeholder values to
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* ensure that they are not optimized out in the first link. The first
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* link must contain the same symbols as the second one for the code
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* generation to work.
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*/
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/* Some arches don't use a vector table, they have a common exception entry
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* point for all interrupts. Don't generate a table in this case.
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*/
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#ifdef CONFIG_GEN_IRQ_VECTOR_TABLE
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u32_t __irq_vector_table _irq_vector_table[IRQ_TABLE_SIZE] = {
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[0 ...(IRQ_TABLE_SIZE - 1)] = (u32_t)&_isr_wrapper,
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};
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#endif
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/* If there are no interrupts at all, or all interrupts are of the 'direct'
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* type and bypass the _sw_isr_table, then do not generate one.
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*/
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#ifdef CONFIG_GEN_SW_ISR_TABLE
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struct _isr_table_entry __sw_isr_table _sw_isr_table[IRQ_TABLE_SIZE] = {
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[0 ...(IRQ_TABLE_SIZE - 1)] = {(void *)0x42, (void *)&_irq_spurious},
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};
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#endif
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