[apple/xnu.git] / osfmk / i386 / vmx / vmx_asm.h

/*
 * Copyright (c) 2006 Apple Computer, Inc. All rights reserved.
 *
 * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
 * 
 * This file contains Original Code and/or Modifications of Original Code
 * as defined in and that are subject to the Apple Public Source License
 * Version 2.0 (the 'License'). You may not use this file except in
 * compliance with the License. The rights granted to you under the License
 * may not be used to create, or enable the creation or redistribution of,
 * unlawful or unlicensed copies of an Apple operating system, or to
 * circumvent, violate, or enable the circumvention or violation of, any
 * terms of an Apple operating system software license agreement.
 * 
 * Please obtain a copy of the License at
 * http://www.opensource.apple.com/apsl/ and read it before using this file.
 * 
 * The Original Code and all software distributed under the License are
 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
 * Please see the License for the specific language governing rights and
 * limitations under the License.
 * 
 * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
 */
 
#ifndef _I386_VMX_ASM_H_
#define _I386_VMX_ASM_H_
 
#include <mach/machine/vm_types.h>
#include <mach/boolean.h>
#include <kern/assert.h>
#include <i386/eflags.h>
#include <i386/seg.h>

#define VMX_FAIL_INVALID	-1
#define VMX_FAIL_VALID		-2
#define VMX_SUCCEED			0

static inline void enter_64bit_mode(void) {
	__asm__ __volatile__ (
		".byte   0xea    /* far jump longmode */	\n\t"
		".long   1f					\n\t"
		".word   %P0					\n\t"
		".code64					\n\t"
		"1:"
		:: "i" (KERNEL64_CS)
	);
}
static inline void enter_compat_mode(void) {
	asm(
		"ljmp    *4f					\n\t"
	"4:							\n\t"
		".long   5f					\n\t"
		".word   %P0					\n\t"
		".code32					\n\t"
	"5:"
		:: "i" (KERNEL32_CS)
	);
}

#define __VMXOFF(res)						\
	__asm__ __volatile__ (					\
		"vmxoff		\n\t"				\
		"cmovcl %2, %0	\n\t"	/* CF = 1, ZF = 0 */	\
		"cmovzl %3, %0"		/* CF = 0, ZF = 1 */	\
		: "=&r" (res)				\
		: "0" (VMX_SUCCEED),				\
		  "r" (VMX_FAIL_INVALID),			\
		  "r" (VMX_FAIL_VALID)				\
		: "memory", "cc"				\
	)

#define __VMXON(addr, res)					\
	__asm__ __volatile__ (					\
		"vmxon %4	\n\t"				\
		"cmovcl %2, %0	\n\t"	/* CF = 1, ZF = 0 */	\
		"cmovzl %3, %0"		/* CF = 0, ZF = 1 */	\
		: "=&r" (res)					\
		: "0" (VMX_SUCCEED),				\
		  "r" (VMX_FAIL_INVALID),			\
		  "r" (VMX_FAIL_VALID),				\
		  "m" (*addr)					\
		: "memory", "cc"				\
	);


/*
 *	__vmxoff -- Leave VMX Operation
 *
 */
static inline int
__vmxoff(void)
{
	int result;
#if defined (__x86_64__)
	__VMXOFF(result);
#else
	if (ml_is64bit()) {
		/* don't put anything between these lines! */
		enter_64bit_mode();
		__VMXOFF(result);
		enter_compat_mode();
	} else {
		__VMXOFF(result);
	}
#endif
	return result;
}

/*
 *	__vmxon -- Enter VMX Operation
 *
 */
 static inline int
__vmxon(addr64_t *v)
 {
	int result;
#if defined (__x86_64__)
	__VMXON(v, result);
#else
	if (ml_is64bit()) {
		/* don't put anything between these lines! */
		enter_64bit_mode();
		__VMXON(v, result);
		enter_compat_mode();
	} else {
		__VMXON(v, result);
	}
#endif
	return result;
}

/*
 * VMX Capability Registers (VCR)
 *
 */
#define VMX_VCR_VMCS_MEM_TYPE_BIT	50
#define VMX_VCR_VMCS_MEM_TYPE_MASK	0xF

#define VMX_VCR_VMCS_SIZE_BIT		32
#define VMX_VCR_VMCS_SIZE_MASK		0x01FFF
#define VMX_VCR_VMCS_REV_ID		0x00000000FFFFFFFFLL

#define VMX_VCR_ACT_HLT_BIT		6
#define VMX_VCR_ACT_HLT_MASK		0x1
#define VMX_VCR_ACT_SHUTDOWN_BIT	7
#define VMX_VCR_ACT_SHUTDOWN_MASK	0x1
#define VMX_VCR_ACT_SIPI_BIT		8
#define VMX_VCR_ACT_SIPI_MASK		0x1
#define VMX_VCR_ACT_CSTATE_BIT		9
#define VMX_VCR_ACT_CSTATE_MASK		0x1
#define VMX_VCR_CR3_TARGS_BIT		16
#define VMX_VCR_CR3_TARGS_MASK		0xFF
#define VMX_VCR_MAX_MSRS_BIT		25
#define VMX_VCR_MAX_MSRS_MASK		0x7
#define VMX_VCR_MSEG_ID_BIT		32
#define VMX_VCR_MSEG_ID_MASK		0xFFFFFFFF

#endif	/* _I386_VMX_H_ */
Commit	Line	Data
2d21ac55 A	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	#ifndef _I386_VMX_ASM_H_
	30	#define _I386_VMX_ASM_H_
	31
	32	#include <mach/machine/vm_types.h>
	33	#include <mach/boolean.h>
	34	#include <kern/assert.h>
	35	#include <i386/eflags.h>
	36	#include <i386/seg.h>
	37
2d21ac55 A	38	#define VMX_FAIL_INVALID -1
	39	#define VMX_FAIL_VALID -2
	40	#define VMX_SUCCEED 0
	41
	42	static inline void enter_64bit_mode(void) {
	43	__asm__ __volatile__ (
	44	".byte 0xea /* far jump longmode */ \n\t"
	45	".long 1f \n\t"
	46	".word %P0 \n\t"
	47	".code64 \n\t"
	48	"1:"
	49	:: "i" (KERNEL64_CS)
	50	);
	51	}
	52	static inline void enter_compat_mode(void) {
	53	asm(
	54	"ljmp *4f \n\t"
	55	"4: \n\t"
	56	".long 5f \n\t"
	57	".word %P0 \n\t"
	58	".code32 \n\t"
	59	"5:"
b0d623f7	60	:: "i" (KERNEL32_CS)
2d21ac55 A	61	);
	62	}
	63
	64	#define __VMXOFF(res) \
	65	__asm__ __volatile__ ( \
	66	"vmxoff \n\t" \
	67	"cmovcl %2, %0 \n\t" /* CF = 1, ZF = 0 */ \
	68	"cmovzl %3, %0" /* CF = 0, ZF = 1 */ \
	69	: "=&r" (res) \
	70	: "0" (VMX_SUCCEED), \
	71	"r" (VMX_FAIL_INVALID), \
	72	"r" (VMX_FAIL_VALID) \
	73	: "memory", "cc" \
	74	)
	75
	76	#define __VMXON(addr, res) \
	77	__asm__ __volatile__ ( \
	78	"vmxon %4 \n\t" \
	79	"cmovcl %2, %0 \n\t" /* CF = 1, ZF = 0 */ \
	80	"cmovzl %3, %0" /* CF = 0, ZF = 1 */ \
	81	: "=&r" (res) \
	82	: "0" (VMX_SUCCEED), \
	83	"r" (VMX_FAIL_INVALID), \
	84	"r" (VMX_FAIL_VALID), \
	85	"m" (*addr) \
	86	: "memory", "cc" \
	87	);
	88
	89
	90	/*
	91	* __vmxoff -- Leave VMX Operation
	92	*
	93	*/
	94	static inline int
	95	__vmxoff(void)
	96	{
	97	int result;
b0d623f7 A	98	#if defined (__x86_64__)
	99	__VMXOFF(result);
	100	#else
2d21ac55 A	101	if (ml_is64bit()) {
	102	/* don't put anything between these lines! */
	103	enter_64bit_mode();
	104	__VMXOFF(result);
	105	enter_compat_mode();
	106	} else {
	107	__VMXOFF(result);
	108	}
b0d623f7	109	#endif
2d21ac55 A	110	return result;
	111	}
	112
	113	/*
	114	* __vmxon -- Enter VMX Operation
	115	*
	116	*/
	117	static inline int
	118	__vmxon(addr64_t *v)
	119	{
	120	int result;
b0d623f7 A	121	#if defined (__x86_64__)
	122	__VMXON(v, result);
	123	#else
2d21ac55 A	124	if (ml_is64bit()) {
	125	/* don't put anything between these lines! */
	126	enter_64bit_mode();
	127	__VMXON(v, result);
	128	enter_compat_mode();
	129	} else {
	130	__VMXON(v, result);
	131	}
b0d623f7	132	#endif
2d21ac55 A	133	return result;
	134	}
	135
	136	/*
	137	* VMX Capability Registers (VCR)
	138	*
	139	*/
	140	#define VMX_VCR_VMCS_MEM_TYPE_BIT 50
	141	#define VMX_VCR_VMCS_MEM_TYPE_MASK 0xF
	142
	143	#define VMX_VCR_VMCS_SIZE_BIT 32
	144	#define VMX_VCR_VMCS_SIZE_MASK 0x01FFF
	145	#define VMX_VCR_VMCS_REV_ID 0x00000000FFFFFFFFLL
	146
	147	#define VMX_VCR_ACT_HLT_BIT 6
	148	#define VMX_VCR_ACT_HLT_MASK 0x1
	149	#define VMX_VCR_ACT_SHUTDOWN_BIT 7
	150	#define VMX_VCR_ACT_SHUTDOWN_MASK 0x1
	151	#define VMX_VCR_ACT_SIPI_BIT 8
	152	#define VMX_VCR_ACT_SIPI_MASK 0x1
	153	#define VMX_VCR_ACT_CSTATE_BIT 9
	154	#define VMX_VCR_ACT_CSTATE_MASK 0x1
	155	#define VMX_VCR_CR3_TARGS_BIT 16
	156	#define VMX_VCR_CR3_TARGS_MASK 0xFF
	157	#define VMX_VCR_MAX_MSRS_BIT 25
	158	#define VMX_VCR_MAX_MSRS_MASK 0x7
	159	#define VMX_VCR_MSEG_ID_BIT 32
	160	#define VMX_VCR_MSEG_ID_MASK 0xFFFFFFFF
	161
	162	#endif /* _I386_VMX_H_ */