/* * Copyright (c) 2017 Intel Corporation * * SPDX-License-Identifier: Apache-2.0 */ /* This creates a special section which is not included by the final binary, * instead it is consumed by the gen_isr_tables.py script. * * What we create here is a data structure: * * struct { * uint32_t num_vectors; <- typically CONFIG_NUM_IRQS * struct _isr_list isrs[]; <- Usually of smaller size than num_vectors * } * * Which indicates the memory address of the number of isrs that were * defined, the total number of IRQ lines in the system, followed by * an appropriate number of instances of struct _isr_list. See * include/sw_isr_table.h * * You will need to declare a bogus memory region for IDT_LIST. It doesn't * matter where this region goes as it is stripped from the final ELF image. * The address doesn't even have to be valid on the target. However, it * shouldn't overlap any other regions. On most arches the following should be * fine: * * MEMORY { * .. other regions .. * IDT_LIST : ORIGIN = 0xfffff7ff, LENGTH = 2K * } */ #ifndef LINKER_ZEPHYR_FINAL SECTION_PROLOGUE(.intList,,) { KEEP(*(.irq_info*)) KEEP(*(.intList*)) } GROUP_ROM_LINK_IN(IDT_LIST, IDT_LIST) #else /DISCARD/ : { KEEP(*(.irq_info*)) KEEP(*(.intList*)) } #endif