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/* * Copyright (c) 2017 Intel Corporation. * * SPDX-License-Identifier: Apache-2.0 */ #include <toolchain.h> #include <linker/sections.h> #include <sw_isr_table.h> #include <arch/cpu.h> /* There is an additional member at the end populated by the linker script * which indicates the number of interrupts specified */ struct int_list_header { uint32_t table_size; uint32_t offset; }; /* These values are not included in the resulting binary, but instead form the * header of the initList section, which is used by gen_isr_tables.py to create * the vector and sw isr tables, */ Z_GENERIC_SECTION(.irq_info) struct int_list_header _iheader = { .table_size = IRQ_TABLE_SIZE, .offset = CONFIG_GEN_IRQ_START_VECTOR, }; /* These are placeholder tables. They will be replaced by the real tables * generated by gen_isr_tables.py. * * z_irq_spurious is used as a placeholder value to ensure that it is not * optimized out in the first linker pass. The first linker pass must contain * the same symbols as the second linker pass for the code generation to work. */ /* Some arches don't use a vector table, they have a common exception entry * point for all interrupts. Don't generate a table in this case. */ #ifdef CONFIG_GEN_IRQ_VECTOR_TABLE /* When both the IRQ vector table and the software ISR table are used, populate * the IRQ vector table with the common software ISR by default, such that all * indirect interrupt vectors are handled using the software ISR table; * otherwise, populate the IRQ vector table with z_irq_spurious so that all * un-connected IRQ vectors end up in the spurious IRQ handler. */ #ifdef CONFIG_GEN_SW_ISR_TABLE #define IRQ_VECTOR_TABLE_DEFAULT_ISR _isr_wrapper #else #define IRQ_VECTOR_TABLE_DEFAULT_ISR z_irq_spurious #endif /* CONFIG_GEN_SW_ISR_TABLE */ uintptr_t __irq_vector_table _irq_vector_table[IRQ_TABLE_SIZE] = { [0 ...(IRQ_TABLE_SIZE - 1)] = (uintptr_t)&IRQ_VECTOR_TABLE_DEFAULT_ISR, }; #endif /* CONFIG_GEN_IRQ_VECTOR_TABLE */ /* If there are no interrupts at all, or all interrupts are of the 'direct' * type and bypass the _sw_isr_table, then do not generate one. */ #ifdef CONFIG_GEN_SW_ISR_TABLE struct _isr_table_entry __sw_isr_table _sw_isr_table[IRQ_TABLE_SIZE] = { [0 ...(IRQ_TABLE_SIZE - 1)] = {(const void *)0x42, (void *)&z_irq_spurious}, }; #endif |