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Commit	Line	Data
	1	/*
	2	* Copyright (c) 2006 Apple Computer, Inc. All rights reserved.
	3	*
	4	* @APPLE_OSREFERENCE_LICENSE_HEADER_START@
	5	*
	6	* This file contains Original Code and/or Modifications of Original Code
	7	* as defined in and that are subject to the Apple Public Source License
	8	* Version 2.0 (the 'License'). You may not use this file except in
	9	* compliance with the License. The rights granted to you under the License
	10	* may not be used to create, or enable the creation or redistribution of,
	11	* unlawful or unlicensed copies of an Apple operating system, or to
	12	* circumvent, violate, or enable the circumvention or violation of, any
	13	* terms of an Apple operating system software license agreement.
	14	*
	15	* Please obtain a copy of the License at
	16	* http://www.opensource.apple.com/apsl/ and read it before using this file.
	17	*
	18	* The Original Code and all software distributed under the License are
	19	* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
	20	* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
	21	* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
	22	* FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
	23	* Please see the License for the specific language governing rights and
	24	* limitations under the License.
	25	*
	26	* @APPLE_OSREFERENCE_LICENSE_HEADER_END@
	27	*/
	28
	29	#include <platforms.h>
	30	#include <mach_kdb.h>
	31
	32	#include <i386/asm.h>
	33	#include <i386/asm64.h>
	34	#include <i386/proc_reg.h>
	35	#include <i386/postcode.h>
	36	#include <assym.s>
	37
	38	.data
	39	.align 3
	40	.globl EXT(gdtptr64)
	41	/* align below right */
	42	.word 0
	43	LEXT(gdtptr64)
	44	.word Times(8,GDTSZ)-1
	45	/* XXX really want .quad here */
	46	.long EXT(master_gdt)
	47	.long KERNEL_UBER_BASE_HI32 /* must be in uber-space */
	48
	49	.align 3
	50	.globl EXT(idtptr64)
	51	/* align below right */
	52	.word 0
	53	LEXT(idtptr64)
	54	.word Times(16,IDTSZ)-1
	55	/* XXX really want .quad here */
	56	.long EXT(master_idt64)
	57	.long KERNEL_UBER_BASE_HI32 /* must be in uber-space */
	58
	59	.text
	60
	61	Entry(ml_load_desc64)
	62
	63	ENTER_64BIT_MODE()
	64
	65	POSTCODE(ML_LOAD_DESC64_ENTRY)
	66
	67	lgdt EXT(gdtptr64) /* load GDT */
	68
	69	POSTCODE(ML_LOAD_DESC64_GDT)
	70
	71	lidt EXT(idtptr64) /* load IDT */
	72
	73	POSTCODE(ML_LOAD_DESC64_IDT)
	74
	75	movw $(KERNEL_LDT),%ax /* get LDT segment */
	76	lldt %ax /* load LDT */
	77
	78	POSTCODE(ML_LOAD_DESC64_LDT)
	79
	80	movw $(KERNEL_TSS),%ax
	81	ltr %ax /* set up KTSS */
	82
	83	POSTCODE(ML_LOAD_DESC64_EXIT)
	84
	85	ENTER_COMPAT_MODE()
	86
	87	ret
	88
	89
	90	Entry(ml_64bit_lldt)
	91	/* (int32_t selector) */
	92
	93	FRAME
	94
	95	ENTER_64BIT_MODE()
	96
	97	movl B_ARG0, %eax
	98	lldt %ax
	99
	100	ENTER_COMPAT_MODE()
	101
	102	EMARF
	103	ret
	104
	105	Entry(set_64bit_debug_regs)
	106	/* x86_debug_state64_t ds /
	107
	108	FRAME
	109
	110	ENTER_64BIT_MODE()
	111
	112	mov B_ARG0, %edx
	113	mov DS64_DR0(%edx), %rax
	114	mov %rax, %dr0
	115	mov DS64_DR1(%edx), %rax
	116	mov %rax, %dr1
	117	mov DS64_DR2(%edx), %rax
	118	mov %rax, %dr2
	119	mov DS64_DR3(%edx), %rax
	120	mov %rax, %dr3
	121
	122	ENTER_COMPAT_MODE()
	123
	124	EMARF
	125	ret
	126
	127	Entry(flush_tlb64)
	128
	129	FRAME
	130
	131	ENTER_64BIT_MODE()
	132
	133	mov %cr3, %rax
	134	mov %rax, %cr3
	135
	136	ENTER_COMPAT_MODE()
	137
	138	EMARF
	139	ret
	140
	141	Entry(set64_cr3)
	142
	143	FRAME
	144
	145	movl B_ARG0, %eax
	146	movl B_ARG1, %edx
	147
	148	ENTER_64BIT_MODE()
	149
	150	/* %rax = %edx:%eax */
	151	shl $32, %rax
	152	shrd $32, %rdx, %rax
	153
	154	mov %rax, %cr3
	155
	156	ENTER_COMPAT_MODE()
	157
	158	EMARF
	159	ret
	160
	161	Entry(get64_cr3)
	162
	163	FRAME
	164
	165	ENTER_64BIT_MODE()
	166
	167	mov %cr3, %rax
	168	mov %rax, %rdx
	169	shr $32, %rdx // %edx:%eax = %cr3
	170
	171	ENTER_COMPAT_MODE()
	172
	173	EMARF
	174	ret
	175
	176	Entry(cpuid64)
	177	ENTER_64BIT_MODE()
	178	cpuid
	179	ENTER_COMPAT_MODE()
	180	ret
	181
	182
	183	/* FXSAVE and FXRSTOR operate in a mode dependent fashion, hence these variants.
	184	* Must be called with interrupts disabled.
	185	*/
	186
	187	Entry(fxsave64)
	188	movl S_ARG0,%eax
	189	ENTER_64BIT_MODE()
	190	fxsave (%eax)
	191	ENTER_COMPAT_MODE()
	192	ret
	193
	194	Entry(fxrstor64)
	195	movl S_ARG0,%eax
	196	ENTER_64BIT_MODE()
	197	fxrstor (%rax)
	198	ENTER_COMPAT_MODE()
	199	ret
	200
	201	Entry(xsave64o)
	202	ENTER_64BIT_MODE()
	203	.short 0xAE0F
	204	/* MOD 0x4, ECX, 0x1 */
	205	.byte 0x21
	206	ENTER_COMPAT_MODE()
	207	ret
	208
	209	Entry(xrstor64o)
	210	ENTER_64BIT_MODE()
	211	.short 0xAE0F
	212	/* MOD 0x5, ECX 0x1 */
	213	.byte 0x29
	214	ENTER_COMPAT_MODE()
	215	ret