| /* |
| * Copyright (c) 2016 Jean-Paul Etienne <fractalclone@gmail.com> |
| * |
| * SPDX-License-Identifier: Apache-2.0 |
| */ |
| |
| #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 |
