98 lines
3.6 KiB
C
98 lines
3.6 KiB
C
/****************************************************************************
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* arch/arm/src/armv6-m/up_vectors.c
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*
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* Copyright (C) 2013 Gregory Nutt. All rights reserved.
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* Author: Gregory Nutt <gnutt@nuttx.org>
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*
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* Cloned from the ARMv7-M version:
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*
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* Copyright (C) 2012 Michael Smith. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* 3. Neither the name NuttX nor the names of its contributors may be
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* used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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****************************************************************************/
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#include "chip.h"
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#include "up_internal.h"
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/************************************************************************************
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* Pre-processor Definitions
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************************************************************************************/
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#define IDLE_STACK ((unsigned)&_ebss+CONFIG_IDLETHREAD_STACKSIZE-4)
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#ifndef ARMV6M_PERIPHERAL_INTERRUPTS
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# error ARMV6M_PERIPHERAL_INTERRUPTS must be defined to the number of I/O interrupts to be supported
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#endif
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/* Chip-specific entrypoint */
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extern void __start(void);
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/* Common exception entrypoint */
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extern void exception_common(void);
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/************************************************************************************
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* Public data
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************************************************************************************/
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/* The v7m vector table consists of an array of function pointers, with the first
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* slot (vector zero) used to hold the initial stack pointer.
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*
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* As all exceptions (interrupts) are routed via exception_common, we just need to
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* fill this array with pointers to it.
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*
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* Note that the [ ... ] desginated initialiser is a GCC extension.
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*/
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unsigned _vectors[] __attribute__((section(".vectors"))) =
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{
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/* Initial stack */
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IDLE_STACK,
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/* Reset exception handler */
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(unsigned)&__start,
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/* Vectors 2 - n point directly at the generic handler */
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[2 ... (15 + ARMV6M_PERIPHERAL_INTERRUPTS)] = (unsigned)&exception_common
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};
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