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vector_riscv.S
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/**
* RISC-V bootup
* Copyright (C) 2021 wolfSSL Inc.
*
* This file is part of wolfBoot.
*
* wolfBoot is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
*
* wolfBoot is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1335, USA
*
*/
.macro trap_entry
addi sp, sp, -64
sw x1, 0(sp)
sw x5, 4(sp)
sw x6, 8(sp)
sw x7, 12(sp)
sw x10, 16(sp)
sw x11, 20(sp)
sw x12, 24(sp)
sw x13, 28(sp)
sw x14, 32(sp)
sw x15, 36(sp)
sw x16, 40(sp)
sw x17, 44(sp)
sw x28, 48(sp)
sw x29, 52(sp)
sw x30, 56(sp)
sw x31, 60(sp)
.endm
.macro trap_exit
lw x1, 0(sp)
lw x5, 4(sp)
lw x6, 8(sp)
lw x7, 12(sp)
lw x10, 16(sp)
lw x11, 20(sp)
lw x12, 24(sp)
lw x13, 28(sp)
lw x14, 32(sp)
lw x15, 36(sp)
lw x16, 40(sp)
lw x17, 44(sp)
lw x28, 48(sp)
lw x29, 52(sp)
lw x30, 56(sp)
lw x31, 60(sp)
addi sp, sp, 64
mret
.endm
.section .isr_vector
.align 8
.global IV
IV:
j _synctrap
.align 2
j trap_empty
.align 2
j trap_empty
.align 2
j trap_empty
.align 2
j trap_empty
.align 2
j trap_empty
.align 2
j trap_empty
.align 2
j trap_empty
.align 2
j trap_empty
.align 2
j trap_empty
.align 2
j trap_empty
.align 2
j trap_empty
.align 2
j trap_empty
.align 2
j trap_empty
.align 2
j trap_empty
.align 2
j trap_empty
.align 2
j trap_empty
.align 2
j trap_empty
.align 2
j trap_empty
.align 2
j trap_empty
.align 2
j trap_empty
.align 2
j trap_empty
.align 2
j trap_empty
.align 2
j trap_empty
.align 2
j trap_empty
.align 2
j trap_empty
.align 2
j trap_empty
.align 2
j trap_empty
.align 2
j trap_empty
.align 2
j trap_empty
.align 2
j trap_empty
.align 2
j trap_empty
.align 2
_synctrap:
trap_entry
jal isr_synctrap
trap_exit
trap_empty:
nop