/*
 * SPDX-FileCopyrightText: 2015-2019 Cadence Design Systems, Inc.
 *
 * SPDX-License-Identifier: MIT
 *
 * SPDX-FileContributor: 2016-2026 Espressif Systems (Shanghai) CO LTD
 */
/*
 * Copyright (c) 2015-2019 Cadence Design Systems, Inc.
 *
 * Permission is hereby granted, free of charge, to any person obtaining
 * a copy of this software and associated documentation files (the
 * "Software"), to deal in the Software without restriction, including
 * without limitation the rights to use, copy, modify, merge, publish,
 * distribute, sublicense, and/or sell copies of the Software, and to
 * permit persons to whom the Software is furnished to do so, subject to
 * the following conditions:
 *
 * The above copyright notice and this permission notice shall be included
 * in all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
 * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
 * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 */
/* Window overflow/underflow handlers from the ESP-IDF Xtensa vectors. Every
 * other exception, and any interrupt, is fatal: this firmware uses none. */
.section .vectors,"ax"
.global exception_vectors
exception_vectors:
    .org 0x0
_WindowOverflow4:

    s32e    a0, a5, -16     /* save a0 to call[j+1]'s stack frame */
    s32e    a1, a5, -12     /* save a1 to call[j+1]'s stack frame */
    s32e    a2, a5,  -8     /* save a2 to call[j+1]'s stack frame */
    s32e    a3, a5,  -4     /* save a3 to call[j+1]'s stack frame */
    rfwo                    /* rotates back to call[i] position */

    .org 0x40
_WindowUnderflow4:

    l32e    a0, a5, -16     /* restore a0 from call[i+1]'s stack frame */
    l32e    a1, a5, -12     /* restore a1 from call[i+1]'s stack frame */
    l32e    a2, a5,  -8     /* restore a2 from call[i+1]'s stack frame */
    l32e    a3, a5,  -4     /* restore a3 from call[i+1]'s stack frame */
    rfwu

    .org 0x80
_WindowOverflow8:

    s32e    a0, a9, -16     /* save a0 to call[j+1]'s stack frame */
    l32e    a0, a1, -12     /* a0 <- call[j-1]'s sp
                               (used to find end of call[j]'s frame) */
    s32e    a1, a9, -12     /* save a1 to call[j+1]'s stack frame */
    s32e    a2, a9,  -8     /* save a2 to call[j+1]'s stack frame */
    s32e    a3, a9,  -4     /* save a3 to call[j+1]'s stack frame */
    s32e    a4, a0, -32     /* save a4 to call[j]'s stack frame */
    s32e    a5, a0, -28     /* save a5 to call[j]'s stack frame */
    s32e    a6, a0, -24     /* save a6 to call[j]'s stack frame */
    s32e    a7, a0, -20     /* save a7 to call[j]'s stack frame */
    rfwo                    /* rotates back to call[i] position */

    .org 0xc0
_WindowUnderflow8:

    l32e    a0, a9, -16     /* restore a0 from call[i+1]'s stack frame */
    l32e    a1, a9, -12     /* restore a1 from call[i+1]'s stack frame */
    l32e    a2, a9,  -8     /* restore a2 from call[i+1]'s stack frame */
    l32e    a7, a1, -12     /* a7 <- call[i-1]'s sp
                               (used to find end of call[i]'s frame) */
    l32e    a3, a9,  -4     /* restore a3 from call[i+1]'s stack frame */
    l32e    a4, a7, -32     /* restore a4 from call[i]'s stack frame */
    l32e    a5, a7, -28     /* restore a5 from call[i]'s stack frame */
    l32e    a6, a7, -24     /* restore a6 from call[i]'s stack frame */
    l32e    a7, a7, -20     /* restore a7 from call[i]'s stack frame */
    rfwu

    .org 0x100
_WindowOverflow12:

    s32e    a0,  a13, -16   /* save a0 to call[j+1]'s stack frame */
    l32e    a0,  a1,  -12   /* a0 <- call[j-1]'s sp
                               (used to find end of call[j]'s frame) */
    s32e    a1,  a13, -12   /* save a1 to call[j+1]'s stack frame */
    s32e    a2,  a13,  -8   /* save a2 to call[j+1]'s stack frame */
    s32e    a3,  a13,  -4   /* save a3 to call[j+1]'s stack frame */
    s32e    a4,  a0,  -48   /* save a4 to end of call[j]'s stack frame */
    s32e    a5,  a0,  -44   /* save a5 to end of call[j]'s stack frame */
    s32e    a6,  a0,  -40   /* save a6 to end of call[j]'s stack frame */
    s32e    a7,  a0,  -36   /* save a7 to end of call[j]'s stack frame */
    s32e    a8,  a0,  -32   /* save a8 to end of call[j]'s stack frame */
    s32e    a9,  a0,  -28   /* save a9 to end of call[j]'s stack frame */
    s32e    a10, a0,  -24   /* save a10 to end of call[j]'s stack frame */
    s32e    a11, a0,  -20   /* save a11 to end of call[j]'s stack frame */
    rfwo                    /* rotates back to call[i] position */

    .org 0x140
_WindowUnderflow12:

    l32e    a0,  a13, -16   /* restore a0 from call[i+1]'s stack frame */
    l32e    a1,  a13, -12   /* restore a1 from call[i+1]'s stack frame */
    l32e    a2,  a13,  -8   /* restore a2 from call[i+1]'s stack frame */
    l32e    a11, a1,  -12   /* a11 <- call[i-1]'s sp
                               (used to find end of call[i]'s frame) */
    l32e    a3,  a13,  -4   /* restore a3 from call[i+1]'s stack frame */
    l32e    a4,  a11, -48   /* restore a4 from end of call[i]'s stack frame */
    l32e    a5,  a11, -44   /* restore a5 from end of call[i]'s stack frame */
    l32e    a6,  a11, -40   /* restore a6 from end of call[i]'s stack frame */
    l32e    a7,  a11, -36   /* restore a7 from end of call[i]'s stack frame */
    l32e    a8,  a11, -32   /* restore a8 from end of call[i]'s stack frame */
    l32e    a9,  a11, -28   /* restore a9 from end of call[i]'s stack frame */
    l32e    a10, a11, -24   /* restore a10 from end of call[i]'s stack frame */
    l32e    a11, a11, -20   /* restore a11 from end of call[i]'s stack frame */
    rfwu


.org 0x180
.rept 22
    j fatal_error
    .space 29
.endr