1 /*
2 * Copyright (c) 2012-2013 Apple 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 _KERNEL_TELEMETRY_H_
30 #define _KERNEL_TELEMETRY_H_
31
32 #include <stdint.h>
33 #include <sys/cdefs.h>
34 #include <mach/mach_types.h>
35 #include <kern/thread.h>
36
37 __BEGIN_DECLS
38
39 /*
40 * No longer supported.
41 */
42 #define TELEMETRY_CMD_TIMER_EVENT 1
43 #define TELEMETRY_CMD_VOUCHER_NAME 2
44 #define TELEMETRY_CMD_VOUCHER_STAIN TELEMETRY_CMD_VOUCHER_NAME
45
46 enum telemetry_pmi {
47 TELEMETRY_PMI_NONE,
48 TELEMETRY_PMI_INSTRS,
49 TELEMETRY_PMI_CYCLES,
50 };
51 #define TELEMETRY_CMD_PMI_SETUP 3
52
53 #if XNU_KERNEL_PRIVATE
54
55 __options_decl(kernel_brk_options_t, uint32_t, {
56 /* Recoverability */
57 KERNEL_BRK_UNRECOVERABLE = 0x00,
58 KERNEL_BRK_RECOVERABLE = 0x01,
59
60 /* Telemetry collection mode */
61 KERNEL_BRK_CORE_ANALYTICS = 0x10,
62 KERNEL_BRK_SIMULATED_PANIC = 0x20, /* Future */
63 });
64
65 #define KERNEL_BRK_TELEMETRY_OPTIONS 0xf0
66
67 /* these show up in telemetry, do not renumber */
68 __enum_decl(kernel_brk_type_t, uint32_t, {
69 KERNEL_BRK_TYPE_KASAN = 0, /* <unrecoverable> KASan violation traps */
70 KERNEL_BRK_TYPE_PTRAUTH = 1, /* <unrecoverable> Pointer Auth failure traps */
71 KERNEL_BRK_TYPE_CLANG = 2, /* <unrecoverable> Clang sanitizer traps */
72 KERNEL_BRK_TYPE_LIBCXX = 3, /* <unrecoverable> Libc++ abort trap*/
73 KERNEL_BRK_TYPE_TELEMETRY = 4, /* < recoverable> Soft telemetry collection traps */
74 KERNEL_BRK_TYPE_XNU = 5, /* <??recoverable> XNU defined traps */
75
76 KERNEL_BRK_TYPE_TEST = ~0u, /* Development only */
77 });
78
79 enum kernel_brk_trap_comment {
80 /* CLANG (reserved) : [0x0000 ~ 0x00FF] <Intel only> */
81 CLANG_X86_TRAP_START = 0x0000,
82 CLANG_X86_TRAP_BOUND_CHK = 0x0019, /* bound check fatal trap */
83 CLANG_X86_TRAP_END = 0x00FF,
84
85 /* LIBCXX : [0x0800 ~ 0x0800] */
86 LIBCXX_TRAP_START = 0x0800,
87 LIBCXX_TRAP_ABORT = 0x0800, /* libcxx abort() in libcxx_support/stdlib.h */
88 LIBCXX_TRAP_END = 0x0800,
89
90 /* KASAN (kasan-tbi.h) : [0x0900 ~ 0x093F] <ARM only> */
91
92 /* CLANG (reserved) : [0x5500 ~ 0x55FF] <ARM only> */
93 CLANG_ARM_TRAP_START = 0x5500,
94 CLANG_ARM_TRAP_BOUND_CHK = 0x5519, /* bound check fatal trap */
95 CLANG_ARM_TRAP_END = 0x55FF,
96
97 /* Software defined : [0xB000 ~ 0xBFFF] */
98 XNU_HARD_TRAP_START = 0xB000,
99 XNU_HARD_TRAP_SAFE_UNLINK = 0xBFFD, /* queue safe unlinking traps */
100 XNU_HARD_TRAP_STRING_CHK = 0xBFFE, /* read traps in string.h */
101 XNU_HARD_TRAP_END = 0xBFFF,
102
103 /* PTRAUTH (sleh.c) : [0xC470 ~ 0xC473] <ARM only> */
104
105 /* TELEMETRY : [0xFF00 ~ 0xFFFE] */
106 XNU_SOFT_TRAP_START = 0xFF00,
107 UBSAN_SOFT_TRAP_SIGNED_OF = 0xFF00, /* ubsan minimal signed overflow*/
108 CLANG_SOFT_TRAP_BOUND_CHK = 0xFF19, /* ml_bound_chk_soft_trap */
109 XNU_SOFT_TRAP_STRING_CHK = 0xFFFE, /* read traps in string.h */
110 XNU_SOFT_TRAP_END = 0xFFFE,
111
112 /* TEST */
113 TEST_RECOVERABLE_SOFT_TRAP = 0xFFFF, /* development only */
114 };
115
116 typedef struct kernel_brk_descriptor {
117 kernel_brk_type_t type;
118 uint16_t base;
119 uint16_t max;
120 kernel_brk_options_t options;
121
122 void (*handle_breakpoint)(void *states, uint16_t comment);
123 } *kernel_brk_descriptor_t;
124
125 extern struct kernel_brk_descriptor brk_descriptors[]
126 __SECTION_START_SYM("__DATA_CONST", "__brk_desc");
127
128 extern struct kernel_brk_descriptor brk_descriptors_end[]
129 __SECTION_END_SYM("__DATA_CONST", "__brk_desc");
130
131 #define KERNEL_BRK_DESCRIPTOR_DEFINE(name, ...) \
132 __PLACE_IN_SECTION("__DATA_CONST,__brk_desc") \
133 static const struct kernel_brk_descriptor name = { __VA_ARGS__ };
134
135 const static inline struct kernel_brk_descriptor *
find_brk_descriptor_by_comment(uint16_t comment)136 find_brk_descriptor_by_comment(uint16_t comment)
137 {
138 for (kernel_brk_descriptor_t des = brk_descriptors; des < brk_descriptors_end; des++) {
139 if (comment >= des->base && comment <= des->max) {
140 return des;
141 }
142 }
143
144 return NULL;
145 }
146
147 extern void telemetry_kernel_brk(
148 kernel_brk_type_t type,
149 kernel_brk_options_t options,
150 void *state,
151 uint16_t comment);
152
153 /* implemented in OSKextLib.cpp */
154 extern void telemetry_backtrace_add_kexts(
155 char *buf,
156 size_t buflen,
157 uintptr_t *frames,
158 uint32_t framecnt);
159
160 extern void telemetry_backtrace_to_string(
161 char *buf,
162 size_t buflen,
163 uint32_t tot,
164 uintptr_t *frames);
165
166 /* boolean_t must be used since variable is loaded from assembly. */
167 extern volatile boolean_t telemetry_needs_record;
168
169 extern void telemetry_init(void);
170
171 extern void compute_telemetry(void *);
172
173 extern void telemetry_ast(thread_t thread, uint32_t reasons);
174
175 extern int telemetry_gather(user_addr_t buffer, uint32_t *length, bool mark);
176
177 /* boolean_t must be used since this function is called from assembly. */
178 extern void telemetry_mark_curthread(boolean_t interrupted_userspace,
179 boolean_t pmi);
180
181 extern int telemetry_pmi_setup(enum telemetry_pmi pmi_type, uint64_t interval);
182
183 #if CONFIG_MACF
184 extern int telemetry_macf_mark_curthread(void);
185 #endif
186
187 extern void bootprofile_init(void);
188 extern void bootprofile_wake_from_sleep(void);
189 extern void bootprofile_get(void **buffer, uint32_t *length);
190 extern int bootprofile_gather(user_addr_t buffer, uint32_t *length);
191
192 #endif /* XNU_KERNEL_PRIVATE */
193
194 __END_DECLS
195
196 #endif /* _KERNEL_TELEMETRY_H_ */
197