105 lines
2.7 KiB
ArmAsm
105 lines
2.7 KiB
ArmAsm
/*
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ChibiOS - Copyright (C) 2006..2018 Giovanni Di Sirio
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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/**
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* @file ARM/compilers/GCC/vectors.s
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* @brief Interrupt vectors for ARM devices.
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*
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* @defgroup ARM_VECTORS ARM Exception Vectors
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* @{
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*/
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#if defined(__DOXYGEN__)
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/**
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* @brief Unhandled exceptions handler.
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* @details Any undefined exception vector points to this function by default.
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* This function simply stops the system into an infinite loop.
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* @note The default implementation is a weak symbol, the application
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* can override the default implementation.
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*
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* @notapi
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*/
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void _unhandled_exception(void) {}
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#endif
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#if !defined(__DOXYGEN__)
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.section .vectors, "ax"
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.code 32
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.balign 4
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/*
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* System entry points.
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*/
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.global _start
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_start:
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ldr pc, _reset
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ldr pc, _undefined
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ldr pc, _swi
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ldr pc, _prefetch
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ldr pc, _abort
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nop
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ldr pc, _irq
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ldr pc, _fiq
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_reset:
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.word Boot_Handler
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_undefined:
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.word Und_Handler
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_swi:
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.word Swi_Handler
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_prefetch:
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.word Prefetch_Handler
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_abort:
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.word Abort_Handler
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_fiq:
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.word Fiq_Handler
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_irq:
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.word Irq_Handler
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/*
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* Default exceptions handlers. The handlers are declared weak in order to be
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* replaced by the real handling code. Everything is defaulted to an infinite
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* loop.
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*/
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.weak Reset_Handler
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Reset_Handler:
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.weak Und_Handler
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Und_Handler:
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.weak Swi_Handler
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Swi_Handler:
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.weak Prefetch_Handler
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Prefetch_Handler:
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.weak Abort_Handler
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Abort_Handler:
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.weak Fiq_Handler
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Fiq_Handler:
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.weak Irq_Handler
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Irq_Handler:
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.weak _unhandled_exception
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_unhandled_exception:
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b _unhandled_exception
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/*
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* Default boot handler. Jump to Reset_Handler.
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*/
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.section .boot, "ax"
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.weak Boot_Handler
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Boot_Handler:
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b Reset_Handler
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#endif
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/** @} */
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