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--- old/usr/src/uts/intel/sys/ucontext.h
+++ new/usr/src/uts/intel/sys/ucontext.h
1 1 /*
2 2 * CDDL HEADER START
3 3 *
4 4 * The contents of this file are subject to the terms of the
5 5 * Common Development and Distribution License (the "License").
6 6 * You may not use this file except in compliance with the License.
7 7 *
8 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 9 * or http://www.opensolaris.org/os/licensing.
10 10 * See the License for the specific language governing permissions
11 11 * and limitations under the License.
12 12 *
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13 13 * When distributing Covered Code, include this CDDL HEADER in each
14 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 15 * If applicable, add the following below this CDDL HEADER, with the
16 16 * fields enclosed by brackets "[]" replaced with your own identifying
17 17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 18 *
19 19 * CDDL HEADER END
20 20 */
21 21
22 22 /*
23 + * Copyright 2015 Joyent, Inc.
23 24 * Copyright 2015 Nexenta Systems, Inc. All rights reserved.
24 25 * Copyright 2023 Oxide Computer Company
25 26 *
26 27 * Copyright 2010 Sun Microsystems, Inc. All rights reserved.
27 28 * Use is subject to license terms.
28 29 */
29 30
30 31 /* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
31 32 /* All Rights Reserved */
32 33
33 34 #ifndef _SYS_UCONTEXT_H
34 35 #define _SYS_UCONTEXT_H
35 36
36 37 #include <sys/feature_tests.h>
37 38
38 39 #include <sys/types.h>
39 40 #include <sys/mcontext.h>
40 41 #if !defined(_XPG4_2) || defined(__EXTENSIONS__)
41 42 #include <sys/signal.h>
42 43 #endif
43 44
44 45 #ifdef __cplusplus
45 46 extern "C" {
46 47 #endif
47 48
48 49 /*
49 50 * Inclusion of <sys/signal.h> for sigset_t and stack_t definitions
50 51 * breaks XPG4v2 namespace. Therefore we must duplicate the defines
51 52 * for these types here when _XPG4_2 is defined.
52 53 */
53 54
54 55 #if defined(_XPG4_2) && !defined(__EXTENSIONS__)
55 56 #ifndef _SIGSET_T
56 57 #define _SIGSET_T
57 58 typedef struct { /* signal set type */
58 59 unsigned long __sigbits[4];
59 60 } sigset_t;
60 61 #endif /* _SIGSET_T */
61 62
62 63 #ifndef _STACK_T
63 64 #define _STACK_T
64 65 typedef struct {
65 66 void *ss_sp;
66 67 size_t ss_size;
67 68 int ss_flags;
68 69 } stack_t;
69 70 #endif /* _STACK_T */
70 71 #endif /* defined(_XPG4_2) && !defined(__EXTENSIONS__) */
71 72
72 73 #if !defined(_XPG4_2) || defined(__EXTENSIONS__)
73 74 typedef struct ucontext ucontext_t;
74 75 #else
75 76 typedef struct __ucontext ucontext_t;
76 77 #endif /* !defined(_XPG4_2) || defined(__EXTENSIONS__) */
77 78
78 79 #if !defined(_XPG4_2) || defined(__EXTENSIONS__)
79 80 struct ucontext {
80 81 #else
81 82 struct __ucontext {
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82 83 #endif
83 84 unsigned long uc_flags;
84 85 ucontext_t *uc_link;
85 86 sigset_t uc_sigmask;
86 87 stack_t uc_stack;
87 88 mcontext_t uc_mcontext;
88 89 /*
89 90 * The first three entries have been borrowed by the lx brand right now.
90 91 * That should be consolidated into a single uc_brand entry with a
91 92 * UC_BRAND flag. Until such time, we leave them as is.
93 + *
94 + * We rename those first three entries here for SmartOS.
92 95 */
93 - long uc_filler[3];
96 + void *uc_brand_data[3];
94 97 long uc_xsave;
95 98 long uc_filler1;
96 99 };
97 -
98 100 #if defined(_SYSCALL32)
99 101
100 102 /* Kernel view of user ILP32 ucontext structure */
101 103
102 104 typedef struct ucontext32 {
103 105 uint32_t uc_flags;
104 106 caddr32_t uc_link;
105 107 sigset_t uc_sigmask;
106 108 stack32_t uc_stack;
107 109 mcontext32_t uc_mcontext;
108 - int32_t uc_filler[3];
110 + caddr32_t uc_brand_data[3];
109 111 int32_t uc_xsave;
110 112 int32_t uc_filler1;
111 113 } ucontext32_t;
112 114
113 115 #if defined(_KERNEL)
114 116 extern void ucontext_nto32(const ucontext_t *src, ucontext32_t *dest);
115 117 extern void ucontext_32ton(const ucontext32_t *src, ucontext_t *dest);
116 118 #endif
117 119
118 120 #endif /* _SYSCALL32 */
119 121
120 122 #if !defined(_XPG4_2) || defined(__EXTENSIONS__)
121 123 #define GETCONTEXT 0
122 124 #define SETCONTEXT 1
123 125 #define GETUSTACK 2
124 126 #define SETUSTACK 3
125 127 #define GETCONTEXT_EXTD 4
126 128
127 129 /*
128 130 * values for uc_flags
129 131 * these are implementation dependent flags, that should be hidden
130 132 * from the user interface, defining which elements of ucontext
131 133 * are valid, and should be restored on call to setcontext
132 134 */
133 135
134 136 #define UC_SIGMASK 0x01
135 137 #define UC_STACK 0x02
136 138 #define UC_CPU 0x04
137 139 #define UC_MAU 0x08
138 140 #define UC_FPU UC_MAU
139 141 #define UC_XSAVE 0x10
140 142
141 143 #define UC_MCONTEXT (UC_CPU|UC_FPU)
142 144
143 145 /*
144 146 * UC_ALL specifies the default context
145 147 */
146 148
147 149 #define UC_ALL (UC_SIGMASK|UC_STACK|UC_MCONTEXT)
148 150 #endif /* !defined(_XPG4_2) || defined(__EXTENSIONS__) */
149 151
150 152 #ifdef _KERNEL
151 153 /*
152 154 * This structure is the private header for the xsave data that we end up
153 155 * sending to the stack. This is basically our own compressed form. See,
154 156 * uts/intel/os/fpu.c for more information.
155 157 */
156 158 #define UC_XSAVE_VERS (('u' << 24) | ('c' << 16) | 0x01)
157 159 typedef struct uc_xsave {
158 160 uint32_t ucx_vers;
159 161 uint32_t ucx_len;
160 162 uint64_t ucx_bv;
161 163 } uc_xsave_t;
162 164
163 165 typedef enum {
164 166 /*
165 167 * Do a boring old savecontext() where we assume that only the data
166 168 * structure that we're given must be filled in.
167 169 */
168 170 SAVECTXT_F_NONE = 0,
169 171 /*
170 172 * Indicate that we should treat the ucontext_t as having valid user
171 173 * pointers for copying out extended state. Currently this means that we
172 174 * treat the uc_xsave member as something that points to a user address.
173 175 */
174 176 SAVECTXT_F_EXTD = 1 << 0,
175 177 /*
176 178 * This indicates that we shouldn't do normal copyout handling and need
177 179 * to actually avoid potentially triggering a watchpoint because we're
178 180 * probably in signal handling context.
179 181 */
180 182 SAVECTXT_F_ONFAULT = 1 << 1
181 183 } savecontext_flags_t;
182 184
183 185 int savecontext(ucontext_t *, const k_sigset_t *, savecontext_flags_t);
184 186 void restorecontext(ucontext_t *);
185 187
186 188 #ifdef _SYSCALL32
187 189 extern int savecontext32(ucontext32_t *, const k_sigset_t *,
188 190 savecontext_flags_t);
189 191 #endif
190 192 #endif
191 193
192 194 #ifdef __cplusplus
193 195 }
194 196 #endif
195 197
196 198 #endif /* _SYS_UCONTEXT_H */
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