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/* $OpenBSD: locore.S,v 1.20 2017/12/31 08:42:04 kettenis Exp $ */
/*-
* Copyright (c) 2012-2014 Andrew Turner
* 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.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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.
*
* $FreeBSD: head/sys/arm64/arm64/locore.S 282867 2015-05-13 18:57:03Z zbb $
*/
#include "assym.h"
#include <sys/syscall.h>
#include <machine/asm.h>
#include <machine/param.h>
#define VECT_EMPTY \
.align 7; \
1: b 1b
.align 11
.globl hyp_vectors
hyp_vectors:
VECT_EMPTY /* Synchronous EL2t */
VECT_EMPTY /* IRQ EL2t */
VECT_EMPTY /* FIQ EL2t */
VECT_EMPTY /* Error EL2t */
VECT_EMPTY /* Synchronous EL2h */
VECT_EMPTY /* IRQ EL2h */
VECT_EMPTY /* FIQ EL2h */
VECT_EMPTY /* Error EL2h */
VECT_EMPTY /* Synchronous 64-bit EL1 */
VECT_EMPTY /* IRQ 64-bit EL1 */
VECT_EMPTY /* FIQ 64-bit EL1 */
VECT_EMPTY /* Error 64-bit EL1 */
VECT_EMPTY /* Synchronous 32-bit EL1 */
VECT_EMPTY /* IRQ 32-bit EL1 */
VECT_EMPTY /* FIQ 32-bit EL1 */
VECT_EMPTY /* Error 32-bit EL1 */
.align 3
.globl abort
abort:
b abort
.data
.global _C_LABEL(esym)
_C_LABEL(esym): .xword _C_LABEL(end)
data_align_pad:
.space 32
.align 12 /* 4KiB aligned */
/*
* 3 initial tables (in the following order):
* L2 for kernel (High addresses)
* L1 for kernel
* L1 for user (Low addresses)
*/
.globl pagetable
pagetable:
.space PAGE_SIZE * 2 // allocate 2 pages for pmapvp2
pagetable_l1_ttbr1:
.space PAGE_SIZE * 2 // allocate 2 pages for pmapvp1
.globl pagetable_l1_ttbr0
pagetable_l1_ttbr0:
.space PAGE_SIZE * 2 // allocate 2 pages, reused later in pmap
.globl pagetable_l0_ttbr0
pagetable_l0_ttbr0:
.space PAGE_SIZE
.globl pagetable_end
pagetable_end:
.bss
.align 4
.globl initstack
initstack:
.space USPACE
.globl initstack_end
initstack_end:
.text
ENTRY(sigcode)
sub sp, sp, #17 * 32
mov x3, sp
stp q0, q1, [x3], #32
stp q2, q3, [x3], #32
stp q4, q5, [x3], #32
stp q6, q7, [x3], #32
stp q8, q9, [x3], #32
stp q10, q11, [x3], #32
stp q12, q13, [x3], #32
stp q14, q15, [x3], #32
stp q16, q17, [x3], #32
stp q18, q19, [x3], #32
stp q20, q21, [x3], #32
stp q22, q23, [x3], #32
stp q24, q25, [x3], #32
stp q26, q27, [x3], #32
stp q28, q29, [x3], #32
stp q30, q31, [x3], #32
mrs x4, fpsr
mrs x5, fpcr
stp w4, w5, [x3]
blr lr
mov x3, sp
ldp q0, q1, [x3], #32
ldp q2, q3, [x3], #32
ldp q4, q5, [x3], #32
ldp q6, q7, [x3], #32
ldp q8, q9, [x3], #32
ldp q10, q11, [x3], #32
ldp q12, q13, [x3], #32
ldp q14, q15, [x3], #32
ldp q16, q17, [x3], #32
ldp q18, q19, [x3], #32
ldp q20, q21, [x3], #32
ldp q22, q23, [x3], #32
ldp q24, q25, [x3], #32
ldp q26, q27, [x3], #32
ldp q28, q29, [x3], #32
ldp q30, q31, [x3], #32
ldp w4, w5, [x3]
mrs x4, fpsr
mrs x5, fpcr
add sp, sp, #17 * 32
mov x0, sp
add x0, x0, #SF_SC
1:
mov x8, #SYS_sigreturn
svc 0
.globl _C_LABEL(sigcoderet)
_C_LABEL(sigcoderet):
/* sigreturn failed, exit */
mov x8, #SYS_exit
svc 0
b 1b
END(sigcode)
/* This may be copied to the stack, keep it 16-byte aligned */
.align 3
.global _C_LABEL(esigcode)
_C_LABEL(esigcode):
.globl sigfill
sigfill:
.word 0xa000f7f0 /* FIXME: illegal on all cpus? */
esigfill:
.data
.globl sigfillsiz
sigfillsiz:
.word esigfill - sigfill
.text
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