| /* |
| * Copyright (c) 2016 Cadence Design Systems, Inc. |
| * SPDX-License-Identifier: Apache-2.0 |
| */ |
| |
| /** |
| * @file |
| * @brief ISR table for static ISR declarations for XTENSA |
| * |
| * Software ISR table for XTENSA |
| */ |
| |
| #include <toolchain.h> |
| #include <sections.h> |
| #include <arch/cpu.h> |
| #include <xtensa/config/core.h> |
| |
| /* |
| * Xtensa assembly code uses xt_unhandled_interrupt for default IRQ handler. |
| */ |
| #define _irq_spurious xt_unhandled_interrupt |
| |
| /* |
| * enable preprocessor features, such |
| * as %expr - evaluate the expression and use it as a string |
| */ |
| .altmacro |
| |
| /* |
| * Define an ISR table entry |
| * Define symbol as weak and give the section .gnu.linkonce.d |
| * prefix. This allows linker overload the symbol and the |
| * whole section by the one defined by a device driver |
| */ |
| .macro _isr_table_entry_declare index |
| WDATA(_isr_irq\index) |
| .section .gnu.linkonce.d.isr_irq\index |
| _isr_irq\index: .word 0xABAD1DEA, _irq_spurious |
| .endm |
| |
| /* |
| * Declare the ISR table |
| */ |
| .macro _isr_table_declare from, to |
| counter = \from |
| .rept (\to - \from) |
| _isr_table_entry_declare %counter |
| counter = counter + 1 |
| .endr |
| .endm |
| |
| GTEXT(_irq_spurious) |
| GDATA(_sw_isr_table) |
| |
| .section .isr_irq0 |
| .align |
| _sw_isr_table: |
| |
| _isr_table_declare 0 XCHAL_NUM_INTERRUPTS |
