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/* This file is part of the ATMEL AVR-UC3-SoftwareFramework-1.7.0 Release */
/*This file is prepared for Doxygen automatic documentation generation.*/
/*! \file *********************************************************************
*
* \brief Exception and interrupt vectors.
*
* This file maps all events supported by an AVR32.
*
* - Compiler: GNU GCC for AVR32
* - Supported devices: All AVR32 devices with an INTC module can be used.
* - AppNote:
*
* \author Atmel Corporation: http://www.atmel.com \n
* Support and FAQ: http://support.atmel.no/
*
******************************************************************************/
/* Copyright (c) 2009 Atmel Corporation. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* 3. The name of Atmel may not be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* 4. This software may only be redistributed and used in connection with an Atmel
* AVR product.
*
* THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE
* EXPRESSLY AND SPECIFICALLY DISCLAIMED. IN NO EVENT SHALL ATMEL BE LIABLE FOR
* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE
*
*/
#if !__AVR32_UC__ && !__AVR32_AP__
#error Implementation of the AVR32 architecture not supported by the INTC driver.
#endif
#include <avr32/io.h>
//! @{
//! \verbatim
.section .exception, "ax", @progbits
// Start of Exception Vector Table.
// EVBA must be aligned with a power of two strictly greater than the EVBA-
// relative offset of the last vector.
.balign 0x200
// Export symbol.
.global _evba
.type _evba, @function
_evba:
.org 0x000
// Unrecoverable Exception.
_handle_Unrecoverable_Exception:
rjmp $
.org 0x004
// TLB Multiple Hit.
_handle_TLB_Multiple_Hit:
rjmp $
.org 0x008
// Bus Error Data Fetch.
_handle_Bus_Error_Data_Fetch:
rjmp $
.org 0x00C
// Bus Error Instruction Fetch.
_handle_Bus_Error_Instruction_Fetch:
rjmp $
.org 0x010
// NMI.
_handle_NMI:
rjmp $
.org 0x014
// Instruction Address.
_handle_Instruction_Address:
rjmp $
.org 0x018
// ITLB Protection.
_handle_ITLB_Protection:
rjmp $
.org 0x01C
// Breakpoint.
_handle_Breakpoint:
rjmp $
.org 0x020
// Illegal Opcode.
_handle_Illegal_Opcode:
rjmp $
.org 0x024
// Unimplemented Instruction.
_handle_Unimplemented_Instruction:
rjmp $
.org 0x028
// Privilege Violation.
_handle_Privilege_Violation:
rjmp $
.org 0x02C
// Floating-Point: UNUSED IN AVR32UC and AVR32AP.
_handle_Floating_Point:
rjmp $
.org 0x030
// Coprocessor Absent: UNUSED IN AVR32UC.
_handle_Coprocessor_Absent:
rjmp $
.org 0x034
// Data Address (Read).
_handle_Data_Address_Read:
rjmp $
.org 0x038
// Data Address (Write).
_handle_Data_Address_Write:
rjmp $
.org 0x03C
// DTLB Protection (Read).
_handle_DTLB_Protection_Read:
rjmp $
.org 0x040
// DTLB Protection (Write).
_handle_DTLB_Protection_Write:
rjmp $
.org 0x044
// DTLB Modified: UNUSED IN AVR32UC.
_handle_DTLB_Modified:
rjmp $
.org 0x050
// ITLB Miss.
_handle_ITLB_Miss:
rjmp $
.org 0x060
// DTLB Miss (Read).
_handle_DTLB_Miss_Read:
rjmp $
.org 0x070
// DTLB Miss (Write).
_handle_DTLB_Miss_Write:
rjmp $
.org 0x100
// Supervisor Call.
_handle_Supervisor_Call:
rjmp $
// Interrupt support.
// The interrupt controller must provide the offset address relative to EVBA.
// Important note:
// All interrupts call a C function named _get_interrupt_handler.
// This function will read group and interrupt line number to then return in
// R12 a pointer to a user-provided interrupt handler.
.balign 4
.irp priority, 0, 1, 2, 3
_int\priority:
#if __AVR32_UC__
// R8-R12, LR, PC and SR are automatically pushed onto the system stack by the
// CPU upon interrupt entry. No other register is saved by hardware.
#elif __AVR32_AP__
// PC and SR are automatically saved in respectively RAR_INTx and RSR_INTx by
// the CPU upon interrupt entry. No other register is saved by hardware.
pushm r8-r12, lr
#endif
mov r12, \priority // Pass the int_level parameter to the _get_interrupt_handler function.
call _get_interrupt_handler
cp.w r12, 0 // Get the pointer to the interrupt handler returned by the function.
#if __AVR32_UC__
movne pc, r12 // If this was not a spurious interrupt (R12 != NULL), jump to the handler.
#elif __AVR32_AP__
breq spint\priority // If this was a spurious interrupt (R12 == NULL), branch.
st.w --sp, r12 // Push the pointer to the interrupt handler onto the system stack since no register may be altered.
popm r8-r12, lr, pc // Restore registers and jump to the handler.
spint\priority:
popm r8-r12, lr
#endif
rete // If this was a spurious interrupt (R12 == NULL), return from event handler.
.endr
// Constant data area.
.balign 4
// Values to store in the interrupt priority registers for the various interrupt priority levels.
// The interrupt priority registers contain the interrupt priority level and
// the EVBA-relative interrupt vector offset.
.global ipr_val
.type ipr_val, @object
ipr_val:
.word (AVR32_INTC_INT0 << AVR32_INTC_IPR_INTLEVEL_OFFSET) | (_int0 - _evba),\
(AVR32_INTC_INT1 << AVR32_INTC_IPR_INTLEVEL_OFFSET) | (_int1 - _evba),\
(AVR32_INTC_INT2 << AVR32_INTC_IPR_INTLEVEL_OFFSET) | (_int2 - _evba),\
(AVR32_INTC_INT3 << AVR32_INTC_IPR_INTLEVEL_OFFSET) | (_int3 - _evba)
//! \endverbatim
//! @}
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