mirror of
https://github.com/Atmosphere-NX/Atmosphere.git
synced 2024-12-27 04:36:04 +00:00
164 lines
4.1 KiB
ArmAsm
164 lines
4.1 KiB
ArmAsm
/*
|
|
* Copyright (c) 2018-2020 Atmosphère-NX
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify it
|
|
* under the terms and conditions of the GNU General Public License,
|
|
* version 2, as published by the Free Software Foundation.
|
|
*
|
|
* This program is distributed in the hope 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, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
/* Some macros taken from https://github.com/ARM-software/arm-trusted-firmware/blob/master/include/common/aarch64/asm_macros.S */
|
|
/*
|
|
* Copyright (c) 2013-2017, ARM Limited and Contributors. All rights reserved.
|
|
*
|
|
* SPDX-License-Identifier: BSD-3-Clause
|
|
*/
|
|
|
|
/*
|
|
* Declare the exception vector table, enforcing it is aligned on a
|
|
* 2KB boundary, as required by the ARMv8 architecture.
|
|
* Use zero bytes as the fill value to be stored in the padding bytes
|
|
* so that it inserts illegal AArch64 instructions. This increases
|
|
* security, robustness and potentially facilitates debugging.
|
|
*/
|
|
.macro vector_base label, section_name=.vectors
|
|
.section \section_name, "ax"
|
|
.align 11, 0
|
|
\label:
|
|
.endm
|
|
|
|
/*
|
|
* Create an entry in the exception vector table, enforcing it is
|
|
* aligned on a 128-byte boundary, as required by the ARMv8 architecture.
|
|
* Use zero bytes as the fill value to be stored in the padding bytes
|
|
* so that it inserts illegal AArch64 instructions. This increases
|
|
* security, robustness and potentially facilitates debugging.
|
|
*/
|
|
.macro vector_entry label, section_name=.vectors
|
|
.cfi_sections .debug_frame
|
|
.section \section_name, "ax"
|
|
.align 7, 0
|
|
.type \label, %function
|
|
.func \label
|
|
.cfi_startproc
|
|
\label:
|
|
.endm
|
|
|
|
/*
|
|
* This macro verifies that the given vector doesnt exceed the
|
|
* architectural limit of 32 instructions. This is meant to be placed
|
|
* immediately after the last instruction in the vector. It takes the
|
|
* vector entry as the parameter
|
|
*/
|
|
.macro check_vector_size since
|
|
.endfunc
|
|
.cfi_endproc
|
|
.if (. - \since) > (32 * 4)
|
|
.error "Vector exceeds 32 instructions"
|
|
.endif
|
|
.endm
|
|
|
|
/* Actual Vectors for Kernel. */
|
|
.global _ZN3ams4kern16ExceptionVectorsEv
|
|
vector_base _ZN3ams4kern16ExceptionVectorsEv
|
|
|
|
/* Current EL, SP0 */
|
|
vector_entry synch_sp0
|
|
/* Just infinite loop. */
|
|
clrex
|
|
nop
|
|
b synch_sp0
|
|
check_vector_size synch_sp0
|
|
|
|
vector_entry irq_sp0
|
|
clrex
|
|
nop
|
|
b irq_sp0
|
|
check_vector_size irq_sp0
|
|
|
|
vector_entry fiq_sp0
|
|
clrex
|
|
nop
|
|
b fiq_sp0
|
|
check_vector_size fiq_sp0
|
|
|
|
vector_entry serror_sp0
|
|
clrex
|
|
nop
|
|
b serror_sp0
|
|
check_vector_size serror_sp0
|
|
|
|
/* Current EL, SPx */
|
|
vector_entry synch_spx
|
|
clrex
|
|
b _ZN3ams4kern4arch5arm6430EL1SynchronousExceptionHandlerEv
|
|
check_vector_size synch_spx
|
|
|
|
vector_entry irq_spx
|
|
b _ZN3ams4kern4arch5arm6422EL1IrqExceptionHandlerEv
|
|
check_vector_size irq_spx
|
|
|
|
vector_entry fiq_spx
|
|
clrex
|
|
nop
|
|
b fiq_spx
|
|
check_vector_size fiq_spx
|
|
|
|
vector_entry serror_spx
|
|
clrex
|
|
nop
|
|
b _ZN3ams4kern4arch5arm6421EL1SystemErrorHandlerEv
|
|
check_vector_size serror_spx
|
|
|
|
/* Lower EL, A64 */
|
|
vector_entry synch_a64
|
|
clrex
|
|
b _ZN3ams4kern4arch5arm6430EL0SynchronousExceptionHandlerEv
|
|
check_vector_size synch_a64
|
|
|
|
vector_entry irq_a64
|
|
clrex
|
|
b _ZN3ams4kern4arch5arm6422EL0IrqExceptionHandlerEv
|
|
check_vector_size irq_a64
|
|
|
|
vector_entry fiq_a64
|
|
clrex
|
|
nop
|
|
b fiq_a64
|
|
check_vector_size fiq_a64
|
|
|
|
vector_entry serror_a64
|
|
clrex
|
|
nop
|
|
b _ZN3ams4kern4arch5arm6421EL0SystemErrorHandlerEv
|
|
check_vector_size serror_a64
|
|
|
|
/* Lower EL, A32 */
|
|
vector_entry synch_a32
|
|
clrex
|
|
b _ZN3ams4kern4arch5arm6430EL0SynchronousExceptionHandlerEv
|
|
check_vector_size synch_a32
|
|
|
|
vector_entry irq_a32
|
|
clrex
|
|
b _ZN3ams4kern4arch5arm6422EL0IrqExceptionHandlerEv
|
|
check_vector_size irq_a32
|
|
|
|
vector_entry fiq_a32
|
|
clrex
|
|
nop
|
|
b fiq_a32
|
|
check_vector_size fiq_a32
|
|
|
|
vector_entry serror_a32
|
|
clrex
|
|
nop
|
|
b _ZN3ams4kern4arch5arm6421EL0SystemErrorHandlerEv
|
|
check_vector_size serror_a32
|