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/*
* Copyright (c) 2016 Jean-Paul Etienne <fractalclone@gmail.com>
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#define _ASMLANGUAGE
#include <toolchain.h>
/* imports */
GTEXT(__reset)
GTEXT(__irq_wrapper)
/*
* following pulpino datasheet, addr 0x00000000 - 0x00000058 are not used
* in IVT. Hence, set them to nop.
*
* Call __irq_wrapper to handle all interrupts/exceptions/faults/ECALL
*
* ECALL is used to handle context switching of threads, as well as
* IRQ offloading (when enabled).
*
* Interrupt Line 23: I2C IRQ 0x0000005C
* Interrupt Line 24: UART IRQ 0x00000060
* Interrupt Line 25: GPIO IRQ 0x00000064
* Interrupt Line 26: SPI Master 0 0x00000068
* Interrupt Line 27: SPI Master 1 0x0000006C
* Interrupt Line 28: Timer A Overflow 0x00000070
* Interrupt Line 29: Timer A Output Cmp 0x00000074
* Interrupt Line 30: Timer B Overflow 0x00000078
* Interrupt Line 31: Timer B Output Cmp 0x0000007C
*
* RESET 0x00000080 - call __reset
* Illegal Instruction Exception 0x00000084
* ECALL Instruction 0x00000088
* Invalid Memory Access 0x0000008C
*/
SECTION_FUNC(vectors, vinit)
.option norvc;
/* nop addr 0x00000000 - 0x00000058 */
.org 0x00
.rept 23
nop
.endr
/* Call __irq_wrapper for all interrupts */
.org 0x5C
.rept 9
jal x0, __irq_wrapper
.endr
/* Call __reset for reset vector */
.org 0x80
jal x0, __reset
/* Illegal instruction */
jal x0, __irq_wrapper
/* ECALL (system call) */
jal x0, __irq_wrapper
/* Invalid memory access */
jal x0, __irq_wrapper
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