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/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (the "License").
* You may not use this file except in compliance with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 2007 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
/*
* Copyright 2019 Joyent, Inc.
* Copyright 2022 Oxide Computer Company
*/
#include <sys/asm_linkage.h>
#include <sys/asm_misc.h>
#include <sys/regset.h>
#include <sys/panic.h>
#include <sys/ontrap.h>
#include <sys/privregs.h>
#include <sys/segments.h>
#include <sys/trap.h>
#include "assym.h"
ENTRY_NP(rd_idtr)
sidt (%rdi)
ret
SET_SIZE(rd_idtr)
ENTRY_NP(wr_idtr)
lidt (%rdi)
ret
SET_SIZE(wr_idtr)
ENTRY_NP(rd_gdtr)
pushq %rbp
movq %rsp, %rbp
sgdt (%rdi)
leave
ret
SET_SIZE(rd_gdtr)
ENTRY_NP(wr_gdtr)
pushq %rbp
movq %rsp, %rbp
lgdt (%rdi)
leave
ret
SET_SIZE(wr_gdtr)
/*
* loads zero selector for ds and es.
*/
ENTRY_NP(load_segment_registers)
pushq %rbp
movq %rsp, %rbp
pushq %rdi
pushq $.newcs
lretq
.newcs:
/*
* zero %ds and %es - they're ignored anyway
*/
xorl %eax, %eax
movw %ax, %ds
movw %ax, %es
movl %esi, %eax
movw %ax, %fs
movl %edx, %eax
movw %ax, %gs
movl %ecx, %eax
movw %ax, %ss
leave
ret
SET_SIZE(load_segment_registers)
ENTRY_NP(get_cs_register)
movq %cs, %rax
ret
SET_SIZE(get_cs_register)
ENTRY_NP(wr_ldtr)
movq %rdi, %rax
lldt %ax
ret
SET_SIZE(wr_ldtr)
ENTRY_NP(rd_ldtr)
xorl %eax, %eax
sldt %ax
ret
SET_SIZE(rd_ldtr)
ENTRY_NP(wr_tsr)
movq %rdi, %rax
ltr %ax
ret
SET_SIZE(wr_tsr)
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