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/*
* Copyright (c) 2023-2025 Ian Marco Moffett and the Osmora Team.
* 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. Neither the name of Hyra nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS 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.
*/
#ifndef _MACHINE_FRAMEASM_H_
#define _MACHINE_FRAMEASM_H_
/* XXX: Must be 16-byte aligned!!! */
#define XFRAME_STACK_SIZE (38 * 8)
/* Trap numbers */
#define TRAPNO_UNKNOWN #0
#define TRAPNO_XSYNC #1 /* Synchronous */
#define TRAPNO_XIRQ #2 /* IRQ */
#define TRAPNO_XFIQ #3 /* FIQ */
#define TRAPNO_XSERR #4 /* System error */
#define PUSH_XFRAME(TRAPNO) \
sub sp, sp, #XFRAME_STACK_SIZE ; \
stp x30, x29, [sp, #(0 * 8)] ; \
stp x28, x27, [sp, #(2 * 8)] ; \
stp x26, x25, [sp, #(4 * 8)] ; \
stp x24, x23, [sp, #(6 * 8)] ; \
stp x22, x21, [sp, #(8 * 8)] ; \
stp x20, x19, [sp, #(10 * 8)] ; \
stp x18, x17, [sp, #(12 * 8)] ; \
stp x16, x15, [sp, #(14 * 8)] ; \
stp x14, x13, [sp, #(16 * 8)] ; \
stp x12, x11, [sp, #(18 * 8)] ; \
stp x10, x9, [sp, #(20 * 8)] ; \
stp x8, x7, [sp, #(22 * 8)] ; \
stp x6, x5, [sp, #(24 * 8)] ; \
stp x4, x3, [sp, #(26 * 8)] ; \
stp x2, x1, [sp, #(28 * 8)] ; \
str x0, [sp, #(30 * 8)] ; \
; \
mrs x0, elr_el1 ; \
str x0, [sp, #(31 * 8)] ; \
mrs x0, esr_el1 ; \
str x0, [sp, #(32 * 8)] ; \
mov x0, TRAPNO ; \
str x0, [sp, #(33 * 8)] ; \
mov x0, sp
#define POP_XFRAME() \
ldr x0, [sp, #(30 * 8)] ; \
ldp x2, x1, [sp, #(28 * 8)] ; \
ldp x4, x3, [sp, #(26 * 8)] ; \
ldp x6, x5, [sp, #(24 * 8)] ; \
ldp x8, x7, [sp, #(22 * 8)] ; \
ldp x10, x9, [sp, #(20 * 8)] ; \
ldp x12, x11, [sp, #(18 * 8)] ; \
ldp x14, x13, [sp, #(16 * 8)] ; \
ldp x16, x15, [sp, #(14 * 8)] ; \
ldp x18, x17, [sp, #(12 * 8)] ; \
ldp x20, x19, [sp, #(10 * 8)] ; \
ldp x22, x21, [sp, #(8 * 8)] ; \
ldp x24, x23, [sp, #(6 * 8)] ; \
ldp x26, x25, [sp, #(4 * 8)] ; \
ldp x28, x27, [sp, #(2 * 8)] ; \
ldp x30, x29, [sp, #(0 * 8)] ; \
add sp, sp, #XFRAME_STACK_SIZE
#endif /* !_MACHINE_FRAMEASM_H_ */
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