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