xref: /freebsd/sys/x86/include/sysarch.h (revision a0b9e2e854027e6ff61fb075a1309dbc71c42b54)
1 /*-
2  * SPDX-License-Identifier: BSD-3-Clause
3  *
4  * Copyright (c) 1993 The Regents of the University of California.
5  * All rights reserved.
6  *
7  * Redistribution and use in source and binary forms, with or without
8  * modification, are permitted provided that the following conditions
9  * are met:
10  * 1. Redistributions of source code must retain the above copyright
11  *    notice, this list of conditions and the following disclaimer.
12  * 2. Redistributions in binary form must reproduce the above copyright
13  *    notice, this list of conditions and the following disclaimer in the
14  *    documentation and/or other materials provided with the distribution.
15  * 3. Neither the name of the University nor the names of its contributors
16  *    may be used to endorse or promote products derived from this software
17  *    without specific prior written permission.
18  *
19  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
20  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
23  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29  * SUCH DAMAGE.
30  *
31  * $FreeBSD$
32  */
33 
34 /*
35  * Architecture specific syscalls (X86)
36  */
37 #ifndef _MACHINE_SYSARCH_H_
38 #define _MACHINE_SYSARCH_H_
39 
40 #include <sys/cdefs.h>
41 
42 #define I386_GET_LDT	0
43 #define I386_SET_LDT	1
44 #define	LDT_AUTO_ALLOC	0xffffffff
45 				/* I386_IOPL */
46 #define I386_GET_IOPERM	3
47 #define I386_SET_IOPERM	4
48 				/* xxxxx */
49 #define	I386_VM86		6	/* XXX Not implementable on amd64 */
50 #define	I386_GET_FSBASE		7
51 #define	I386_SET_FSBASE		8
52 #define	I386_GET_GSBASE		9
53 #define	I386_SET_GSBASE		10
54 #define	I386_GET_XFPUSTATE	11
55 #define	I386_SET_PKRU		12
56 #define	I386_CLEAR_PKRU		13
57 
58 /* Leave space for 0-127 for to avoid translating syscalls */
59 #define	AMD64_GET_FSBASE	128
60 #define	AMD64_SET_FSBASE	129
61 #define	AMD64_GET_GSBASE	130
62 #define	AMD64_SET_GSBASE	131
63 #define	AMD64_GET_XFPUSTATE	132
64 #define	AMD64_SET_PKRU		133
65 #define	AMD64_CLEAR_PKRU	134
66 
67 /* Flags for AMD64_SET_PKRU */
68 #define	AMD64_PKRU_EXCL		0x0001
69 #define	AMD64_PKRU_PERSIST	0x0002
70 
71 struct i386_ioperm_args {
72 	unsigned int start;
73 	unsigned int length;
74 	int	enable;
75 };
76 
77 #ifdef __i386__
78 struct i386_ldt_args {
79 	unsigned int start;
80 	union descriptor *descs;
81 	unsigned int num;
82 };
83 
84 struct i386_vm86_args {
85 	int	sub_op;			/* sub-operation to perform */
86 	char	*sub_args;		/* args */
87 };
88 
89 struct i386_get_xfpustate {
90 	void *addr;
91 	int len;
92 };
93 #else
94 struct i386_ldt_args {
95 	unsigned int start;
96 	struct user_segment_descriptor *descs __packed;
97 	unsigned int num;
98 };
99 
100 struct i386_get_xfpustate {
101 	unsigned int addr;
102 	int len;
103 };
104 
105 struct i386_set_pkru {
106 	unsigned int addr;
107 	unsigned int len;
108 	unsigned int keyidx;
109 	int flags;
110 };
111 
112 struct amd64_get_xfpustate {
113 	void *addr;
114 	int len;
115 };
116 #endif
117 
118 struct amd64_set_pkru {
119 	void *addr;
120 	unsigned long len;
121 	unsigned int keyidx;
122 	int flags;
123 };
124 
125 #ifndef _KERNEL
126 union descriptor;
127 struct dbreg;
128 
129 __BEGIN_DECLS
130 int i386_get_ldt(int, union descriptor *, int);
131 int i386_set_ldt(int, union descriptor *, int);
132 int i386_get_ioperm(unsigned int, unsigned int *, int *);
133 int i386_set_ioperm(unsigned int, unsigned int, int);
134 int i386_vm86(int, void *);
135 int i386_get_fsbase(void **);
136 int i386_get_gsbase(void **);
137 int i386_set_fsbase(void *);
138 int i386_set_gsbase(void *);
139 int i386_set_watch(int, unsigned int, int, int, struct dbreg *);
140 int i386_clr_watch(int, struct dbreg *);
141 int amd64_get_fsbase(void **);
142 int amd64_get_gsbase(void **);
143 int amd64_set_fsbase(void *);
144 int amd64_set_gsbase(void *);
145 int x86_pkru_get_perm(unsigned int keyidx, int *access, int *modify);
146 int x86_pkru_set_perm(unsigned int keyidx, int access, int modify);
147 int x86_pkru_protect_range(void *addr, unsigned long len, unsigned int keyidx,
148     int flag);
149 int x86_pkru_unprotect_range(void *addr, unsigned long len);
150 int sysarch(int, void *);
151 __END_DECLS
152 #else
153 struct thread;
154 union descriptor;
155 
156 int i386_get_ldt(struct thread *, struct i386_ldt_args *);
157 int i386_set_ldt(struct thread *, struct i386_ldt_args *, union descriptor *);
158 int i386_get_ioperm(struct thread *, struct i386_ioperm_args *);
159 int i386_set_ioperm(struct thread *, struct i386_ioperm_args *);
160 int amd64_get_ldt(struct thread *, struct i386_ldt_args *);
161 int amd64_set_ldt(struct thread *, struct i386_ldt_args *,
162     struct user_segment_descriptor *);
163 int amd64_get_ioperm(struct thread *, struct i386_ioperm_args *);
164 int amd64_set_ioperm(struct thread *, struct i386_ioperm_args *);
165 #endif
166 
167 #endif /* !_MACHINE_SYSARCH_H_ */
168