1 /*
2 * Copyright (c) 2007 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 #ifdef PRIVATE
29
30 #ifndef _ARM_CPU_CAPABILITIES_H
31 #define _ARM_CPU_CAPABILITIES_H
32
33 #if defined (__arm__) || defined (__arm64__)
34
35 #ifndef __ASSEMBLER__
36 #include <stdint.h>
37 #include <mach/vm_types.h>
38 #endif
39
40
41 #define USER_TIMEBASE_NONE 0
42 #define USER_TIMEBASE_SPEC 1
43 #define USER_TIMEBASE_NOSPEC 2
44 #define USER_TIMEBASE_NOSPEC_APPLE 3
45
46 /*
47 * This is the authoritative way to determine from user mode what
48 * implementation-specific processor features are available.
49 * This API only supported for Apple internal use.
50 *
51 */
52
53 /*
54 * Bit definitions for _cpu_capabilities:
55 */
56 #define kHasFeatFP16 0x00000008 // ARM v8.2 NEON FP16 supported
57 #define kCache32 0x00000010 // cache line size is 32 bytes
58 #define kCache64 0x00000020 // cache line size is 64 bytes
59 #define kCache128 0x00000040 // cache line size is 128 bytes
60 #define kFastThreadLocalStorage 0x00000080 // TLS ptr is kept in a user-mode-readable register
61 #define kHasAdvSIMD 0x00000100 // Advanced SIMD is supported
62 #define kHasAdvSIMD_HPFPCvt 0x00000200 // Advanced SIMD half-precision
63 #define kHasVfp 0x00000400 // VFP is supported
64 #define kHasUCNormalMemory 0x00000800 // Uncacheable normal memory type supported
65 #define kHasEvent 0x00001000 // WFE/SVE and period event wakeup
66 #define kHasFMA 0x00002000 // Fused multiply add is supported
67 #define kHasFeatFHM 0x00004000 // Optional ARMv8.2 FMLAL/FMLSL instructions (required in ARMv8.4)
68 #define kUP 0x00008000 // set if (kNumCPUs == 1)
69 #define kNumCPUs 0x00FF0000 // number of CPUs (see _NumCPUs() below)
70 #define kHasARMv8Crypto 0x01000000 // Optional ARMv8 Crypto extensions
71 #define kHasFeatLSE 0x02000000 // ARMv8.1 Atomic instructions supported
72 #define kHasARMv8Crc32 0x04000000 // Optional ARMv8 crc32 instructions (required in ARMv8.1)
73 #define kHasFeatSHA512 0x80000000 // Optional ARMv8.2 SHA512 instructions
74 /* Extending into 64-bits from here: */
75 #define kHasFeatSHA3 0x0000000100000000 // Optional ARMv8.2 SHA3 instructions
76 #define kHasFeatFCMA 0x0000000200000000 // ARMv8.3 complex number instructions
77 #define kHasFeatAFP 0x0000000400000000 // ARMv8.7 alternate floating point mode
78 #define kHasFEATFlagM 0x0000010000000000
79 #define kHasFEATFlagM2 0x0000020000000000
80 #define kHasFeatDotProd 0x0000040000000000
81 #define kHasFeatRDM 0x0000080000000000
82 #define kHasFeatSPECRES 0x0000100000000000
83 #define kHasFeatSB 0x0000200000000000
84 #define kHasFeatFRINTTS 0x0000400000000000
85 #define kHasArmv8GPI 0x0000800000000000
86 #define kHasFeatLRCPC 0x0001000000000000
87 #define kHasFeatLRCPC2 0x0002000000000000
88 #define kHasFeatJSCVT 0x0004000000000000
89 #define kHasFeatPAuth 0x0008000000000000
90 #define kHasFeatDPB 0x0010000000000000
91 #define kHasFeatDPB2 0x0020000000000000
92 #define kHasFeatLSE2 0x0040000000000000
93 #define kHasFeatCSV2 0x0080000000000000
94 #define kHasFeatCSV3 0x0100000000000000
95 #define kHasFeatDIT 0x0200000000000000
96 #define kHasFP_SyncExceptions 0x0400000000000000
97 #define kHasFeatSME 0x0800000000000000
98 #define kHasFeatSME2 0x1000000000000000
99 #define kHasFeatSME2p1 0x2000000000000000
100
101 /* Individual features coalesced to save bits */
102 #define kHasFeatSHA256 kHasARMv8Crypto
103 #define kHasFeatSHA1 kHasARMv8Crypto
104 #define kHasFeatAES kHasARMv8Crypto
105 #define kHasFeatPMULL kHasARMv8Crypto
106
107 /* Deprecated names */
108 #define kHasNeonFP16 kHasFeatFP16
109 #define kHasNeon kHasAdvSIMD
110 #define kHasNeonHPFP kHasAdvSIMD_HPFPCvt
111 #define kHasARMv82FHM kHasFeatFHM
112 #define kHasARMv81Atomics kHasFeatLSE
113 #define kHasARMv82SHA512 kHasFeatSHA512
114 #define kHasARMv82SHA3 kHasFeatSHA3
115 #define kHasARMv83CompNum kHasFeatFCMA
116
117 #define kNumCPUsShift 16 // see _NumCPUs() below
118 /*
119 * Bit definitions for multiuser_config:
120 */
121 #define kIsMultiUserDevice 0x80000000 // this device is in multiuser mode
122 #define kHasSecondaryUsers 0x40000000 // this device has Secondary Users
123 #define kMultiUserCurrentUserMask 0x3fffffff // the current user UID of the multiuser device
124
125 #ifndef __ASSEMBLER__
126 #include <sys/commpage.h>
127
128 __BEGIN_DECLS
129 extern uint64_t _get_cpu_capabilities( void );
130 __END_DECLS
131
132 __inline static
133 int
_NumCPUs(void)134 _NumCPUs( void )
135 {
136 return (_get_cpu_capabilities() & kNumCPUs) >> kNumCPUsShift;
137 }
138
139
140 typedef struct {
141 volatile uint64_t TimeBase;
142 volatile uint32_t TimeStamp_sec;
143 volatile uint32_t TimeStamp_usec;
144 volatile uint32_t TimeBaseTicks_per_sec;
145 volatile uint32_t TimeBaseTicks_per_usec;
146 volatile uint64_t TimeBase_magic;
147 volatile uint32_t TimeBase_add;
148 volatile uint32_t TimeBase_shift;
149 } commpage_timeofday_data_t;
150
151 __BEGIN_DECLS
152 extern vm_address_t _get_commpage_priv_address(void);
153 extern vm_address_t _get_commpage_ro_address(void);
154 extern vm_address_t _get_commpage_text_priv_address(void);
155 __END_DECLS
156
157 #endif /* __ASSEMBLER__ */
158
159
160 /*
161 * The shared kernel/user "comm page(s)":
162 */
163
164 #if defined(__LP64__)
165
166 #define _COMM_PAGE64_BASE_ADDRESS (0x0000000FFFFFC000ULL) /* In TTBR0 */
167 #define _COMM_PAGE64_RO_ADDRESS (0x0000000FFFFF4000ULL) /* In TTBR0 */
168 #define _COMM_PAGE64_AREA_LENGTH (_COMM_PAGE32_AREA_LENGTH)
169 #define _COMM_PAGE64_AREA_USED (-1)
170
171 #define _COMM_PAGE_PRIV(_addr_) ((_addr_) - (_COMM_PAGE_START_ADDRESS) + _get_commpage_priv_address())
172
173 #ifdef KERNEL_PRIVATE
174 #define _COMM_PAGE_RW_OFFSET (0)
175 #define _COMM_PAGE_RO_OFFSET (0)
176 #define _COMM_PAGE_AREA_LENGTH (PAGE_SIZE)
177
178 #define _COMM_PAGE_BASE_ADDRESS (_get_commpage_priv_address())
179 #define _COMM_PAGE_START_ADDRESS (_get_commpage_priv_address())
180 #define _COMM_PAGE_RO_ADDRESS (_get_commpage_ro_address())
181
182 /**
183 * This represents the size of the memory region that the commpage is nested in.
184 * On 4K page systems, this is 1GB, and on 16KB page systems this is technically
185 * only 32MB, but to keep consistency across address spaces we always reserve
186 * 1GB for the commpage on ARM devices.
187 *
188 * The commpage itself only takes up a single page, but its page tables are
189 * being shared across every user process. Entries should not be allowed to
190 * be created in those shared tables, which is why the VM uses these values to
191 * reserve the entire nesting region in every user process address space.
192 *
193 * If the commpage base address changes, these values might also need to be
194 * updated.
195 */
196 #define _COMM_PAGE64_NESTING_START (0x0000000FC0000000ULL)
197 #define _COMM_PAGE64_NESTING_SIZE (0x40000000ULL) /* 1GiB */
198 _Static_assert((_COMM_PAGE64_BASE_ADDRESS >= _COMM_PAGE64_NESTING_START) &&
199 (_COMM_PAGE64_BASE_ADDRESS < (_COMM_PAGE64_NESTING_START + _COMM_PAGE64_NESTING_SIZE)),
200 "_COMM_PAGE64_BASE_ADDRESS is not within the nesting region. Commpage nesting "
201 "region probably needs to be updated.");
202
203 #else /* KERNEL_PRIVATE */
204 /*
205 * <sys/commpage.h> defines a couple of convenience macros
206 * to help read data from the commpage.
207 */
208 #define _COMM_PAGE_AREA_LENGTH (4096)
209
210 #define _COMM_PAGE_BASE_ADDRESS _COMM_PAGE64_BASE_ADDRESS
211 #define _COMM_PAGE_START_ADDRESS _COMM_PAGE64_BASE_ADDRESS
212 #define _COMM_PAGE_RO_ADDRESS _COMM_PAGE64_RO_ADDRESS
213 #endif /* KERNEL_PRIVATE */
214
215 #else /* __LP64__ */
216
217 #define _COMM_PAGE64_BASE_ADDRESS (-1)
218 #define _COMM_PAGE64_AREA_LENGTH (-1)
219 #define _COMM_PAGE64_AREA_USED (-1)
220
221 // macro to change a user comm page address to one that is accessible from privileged mode
222 // this macro is stubbed as PAN is not available on AARCH32,
223 // but this may still be required for compatibility
224 #define _COMM_PAGE_PRIV(_addr_) (_addr_)
225
226 #ifdef KERNEL_PRIVATE
227 #define _COMM_PAGE_RW_OFFSET (_get_commpage_priv_address()-_COMM_PAGE_BASE_ADDRESS)
228 #define _COMM_PAGE_RO_OFFSET (_get_commpage_ro_address()-_COMM_PAGE_RO_ADDRESS)
229 #define _COMM_PAGE_AREA_LENGTH (PAGE_SIZE)
230 #else /* KERNEL_PRIVATE */
231 #define _COMM_PAGE_AREA_LENGTH (4096)
232 #endif /* KERNEL_PRIVATE */
233
234 #define _COMM_PAGE_BASE_ADDRESS _COMM_PAGE32_BASE_ADDRESS
235 #define _COMM_PAGE_START_ADDRESS _COMM_PAGE32_BASE_ADDRESS
236 #define _COMM_PAGE_RO_ADDRESS _COMM_PAGE32_RO_ADDRESS
237
238 #endif /* __LP64__ */
239
240 #define _COMM_PAGE32_BASE_ADDRESS (0xFFFF4000) /* Must be outside of normal map bounds */
241 #define _COMM_PAGE32_RO_ADDRESS (0xFFFFC000) /* Must be outside of normal map bounds */
242 #define _COMM_PAGE32_AREA_LENGTH (_COMM_PAGE_AREA_LENGTH)
243 #define _COMM_PAGE32_TEXT_START (-1)
244
245 #define _COMM_PAGE32_OBJC_SIZE 0ULL
246 #define _COMM_PAGE32_OBJC_BASE 0ULL
247 #define _COMM_PAGE64_OBJC_SIZE 0ULL
248 #define _COMM_PAGE64_OBJC_BASE 0ULL
249
250 /*
251 * Comm page layout versions
252 *
253 * If you need to create an RO variant of an existing commpage field (see "Comm page data fields"
254 * description below), bump the maximum value of _COMM_PAGE_LAYOUT_VERSION. The kernel should
255 * always use the latest version. Individual build targets may default to lower versions as
256 * needed. For layout versions lower than the version in which an RO variant was added, the
257 * field should be defined to use the "legacy" RW offset. In general, we expect these comm page
258 * fields to only be used by platform-level binaries, which are typically coupled to the SDK.
259 * A notable exception are simulator targets, which must run the latest platform binaries against
260 * older host kernels. Individual builds can also override _COMM_PAGE_LAYOUT_VERSION if they
261 * should need to for some reason.
262 * Note that we don't use the _COMM_PAGE_VERSION field to provide conditional runtime access
263 * to these RO fields, as the version resides in the legacy kernel-writable page and could be
264 * spoofed by an attacker.
265 */
266
267 #ifndef _COMM_PAGE_LAYOUT_VERSION
268
269 #if KERNEL
270 #define _COMM_PAGE_LAYOUT_VERSION 1
271 #elif TARGET_OS_SIMULATOR
272 // Simulators require running platform libraries built against new SDKs on older hosts
273 #define _COMM_PAGE_LAYOUT_VERSION 0
274 #else
275 #define _COMM_PAGE_LAYOUT_VERSION 1
276 #endif
277
278 #endif // #ifndef _COMM_PAGE_LAYOUT_VERSION
279
280 /*
281 * Comm page data fields
282 *
283 * There is always at least one comm page, backed by a physical page with a kernel RW mapping.
284 * Apply the _COMM_PAGE_PRIV macro to use this mapping in kernel mode.
285 * Depending on device configuration, there may be an additional comm page, backed by a physical
286 * page with a kernel RO mapping. This is an additional security measure for certain high-value
287 * comm page fields which only need to be accessed from the kernel during early boot.
288 * Fields that wish to use this page when available should be defined here as an offset from
289 * _COMM_PAGE_RO_ADDRESS instead of _COMM_PAGE_START_ADDRESS, and should be placed at an offset
290 * that does not overlap with any other RO or RW field. If an existing field is migrated from
291 * the RW to the RO page, the RW definition should be preserved with a _LEGACY suffix in order
292 * to maintain binary compatibility.
293 */
294 #define _COMM_PAGE_SIGNATURE (_COMM_PAGE_START_ADDRESS+0x000) // first few bytes are a signature
295 #define _COMM_PAGE_SIGNATURELEN (0x10)
296 #define _COMM_PAGE_CPU_CAPABILITIES64 (_COMM_PAGE_START_ADDRESS+0x010) /* uint64_t _cpu_capabilities */
297 #define _COMM_PAGE_UNUSED (_COMM_PAGE_START_ADDRESS+0x018) /* 6 unused bytes */
298 #define _COMM_PAGE_VERSION (_COMM_PAGE_START_ADDRESS+0x01E) // 16-bit version#
299 #define _COMM_PAGE_THIS_VERSION 3 // version of the commarea format
300
301 #define _COMM_PAGE_CPU_CAPABILITIES (_COMM_PAGE_START_ADDRESS+0x020) // uint32_t _cpu_capabilities
302 #define _COMM_PAGE_NCPUS (_COMM_PAGE_START_ADDRESS+0x022) // uint8_t number of configured CPUs
303
304 #define _COMM_PAGE_USER_PAGE_SHIFT_32_LEGACY (_COMM_PAGE_START_ADDRESS+0x024) // VM page shift for 32-bit processes
305 #if _COMM_PAGE_LAYOUT_VERSION >= 1
306 #define _COMM_PAGE_USER_PAGE_SHIFT_32 (_COMM_PAGE_RO_ADDRESS+0x024) // VM page shift for 32-bit processes
307 #else
308 #define _COMM_PAGE_USER_PAGE_SHIFT_32 _COMM_PAGE_USER_PAGE_SHIFT_32_LEGACY
309 #endif
310
311 #define _COMM_PAGE_USER_PAGE_SHIFT_64_LEGACY (_COMM_PAGE_START_ADDRESS+0x025) // VM page shift for 64-bit processes
312 #if _COMM_PAGE_LAYOUT_VERSION >= 1
313 #define _COMM_PAGE_USER_PAGE_SHIFT_64 (_COMM_PAGE_RO_ADDRESS+0x025) // VM page shift for 64-bit processes
314 #else
315 #define _COMM_PAGE_USER_PAGE_SHIFT_64 _COMM_PAGE_USER_PAGE_SHIFT_64_LEGACY
316 #endif
317
318 #define _COMM_PAGE_CACHE_LINESIZE (_COMM_PAGE_START_ADDRESS+0x026) // uint16_t cache line size
319 #define _COMM_PAGE_UNUSED4 (_COMM_PAGE_START_ADDRESS+0x028) // used to be _COMM_PAGE_SCHED_GEN: uint32_t scheduler generation number (count of pre-emptions)
320 #define _COMM_PAGE_UNUSED3 (_COMM_PAGE_START_ADDRESS+0x02C) // used to be _COMM_PAGE_SPIN_COUNT: uint32_t max spin count for mutex's (3 bytes unused)
321 #define _COMM_PAGE_CPU_CLUSTERS (_COMM_PAGE_START_ADDRESS+0x02F) // uint8_t number of CPU clusters
322 #define _COMM_PAGE_MEMORY_PRESSURE (_COMM_PAGE_START_ADDRESS+0x030) // uint32_t copy of vm_memory_pressure
323 #define _COMM_PAGE_ACTIVE_CPUS (_COMM_PAGE_START_ADDRESS+0x034) // uint8_t number of active CPUs (hw.activecpu)
324 #define _COMM_PAGE_PHYSICAL_CPUS (_COMM_PAGE_START_ADDRESS+0x035) // uint8_t number of physical CPUs (hw.physicalcpu_max)
325 #define _COMM_PAGE_LOGICAL_CPUS (_COMM_PAGE_START_ADDRESS+0x036) // uint8_t number of logical CPUs (hw.logicalcpu_max)
326
327 #define _COMM_PAGE_KERNEL_PAGE_SHIFT_LEGACY (_COMM_PAGE_START_ADDRESS+0x037) // uint8_t kernel vm page shift */
328 #if _COMM_PAGE_LAYOUT_VERSION >= 1
329 #define _COMM_PAGE_KERNEL_PAGE_SHIFT (_COMM_PAGE_RO_ADDRESS+0x037) // uint8_t kernel vm page shift */
330 #else
331 #define _COMM_PAGE_KERNEL_PAGE_SHIFT _COMM_PAGE_KERNEL_PAGE_SHIFT_LEGACY
332 #endif
333
334 #define _COMM_PAGE_MEMORY_SIZE (_COMM_PAGE_START_ADDRESS+0x038) // uint64_t max memory size */
335 #define _COMM_PAGE_TIMEOFDAY_DATA (_COMM_PAGE_START_ADDRESS+0x040) // used by gettimeofday(). Currently, sizeof(commpage_timeofday_data_t) = 40. A new struct is used on gettimeofday but space is reserved on the commpage for compatibility
336 #define _COMM_PAGE_CPUFAMILY (_COMM_PAGE_START_ADDRESS+0x080) // used by memcpy() resolver
337
338 #define _COMM_PAGE_DEV_FIRM_LEGACY (_COMM_PAGE_START_ADDRESS+0x084) // uint32_t handle on PE_i_can_has_debugger
339 #if _COMM_PAGE_LAYOUT_VERSION >= 1
340 #define _COMM_PAGE_DEV_FIRM (_COMM_PAGE_RO_ADDRESS+0x084) // uint32_t handle on PE_i_can_has_debugger
341 #else
342 #define _COMM_PAGE_DEV_FIRM _COMM_PAGE_DEV_FIRM_LEGACY
343 #endif
344
345 #define _COMM_PAGE_TIMEBASE_OFFSET (_COMM_PAGE_START_ADDRESS+0x088) // uint64_t timebase offset for constructing mach_absolute_time()
346 #define _COMM_PAGE_USER_TIMEBASE (_COMM_PAGE_START_ADDRESS+0x090) // uint8_t is userspace mach_absolute_time supported (can read the timebase)
347 #define _COMM_PAGE_CONT_HWCLOCK (_COMM_PAGE_START_ADDRESS+0x091) // uint8_t is always-on hardware clock present for mach_continuous_time()
348 #define _COMM_PAGE_DTRACE_DOF_ENABLED (_COMM_PAGE_START_ADDRESS+0x092) // uint8_t 0 if userspace DOF disable, 1 if enabled
349 #define _COMM_PAGE_UNUSED0 (_COMM_PAGE_START_ADDRESS+0x093) // 5 unused bytes
350 #define _COMM_PAGE_CONT_TIMEBASE (_COMM_PAGE_START_ADDRESS+0x098) // uint64_t base for mach_continuous_time() relative to mach_absolute_time()
351 #define _COMM_PAGE_BOOTTIME_USEC (_COMM_PAGE_START_ADDRESS+0x0A0) // uint64_t boottime in microseconds
352 #define _COMM_PAGE_CONT_HW_TIMEBASE (_COMM_PAGE_START_ADDRESS+0x0A8) // uint64_t base for mach_continuous_time() relative to CNT[PV]CT
353
354 // aligning to 64byte for cacheline size
355 #define _COMM_PAGE_APPROX_TIME (_COMM_PAGE_START_ADDRESS+0x0C0) // uint64_t last known mach_absolute_time()
356 #define _COMM_PAGE_APPROX_TIME_SUPPORTED (_COMM_PAGE_START_ADDRESS+0x0C8) // uint8_t is mach_approximate_time supported
357
358
359 #define _COMM_PAGE_UNUSED1 (_COMM_PAGE_START_ADDRESS+0x0D9) // 39 unused bytes, align next mutable value to a separate cache line
360
361 #define _COMM_PAGE_KDEBUG_ENABLE (_COMM_PAGE_START_ADDRESS+0x100) // uint32_t export kdebug status bits to userspace
362 #define _COMM_PAGE_ATM_DIAGNOSTIC_CONFIG (_COMM_PAGE_START_ADDRESS+0x104) // uint32_t export "atm_diagnostic_config" to userspace
363 #define _COMM_PAGE_MULTIUSER_CONFIG (_COMM_PAGE_START_ADDRESS+0x108) // uint32_t export "multiuser_config" to userspace
364
365
366 #define _COMM_PAGE_NEWTIMEOFDAY_DATA (_COMM_PAGE_START_ADDRESS+0x120) // used by gettimeofday(). Currently, sizeof(new_commpage_timeofday_data_t) = 40.
367 #define _COMM_PAGE_REMOTETIME_PARAMS (_COMM_PAGE_START_ADDRESS+0x148) // used by mach_bridge_remote_time(). Currently, sizeof(struct bt_params) = 24
368 #define _COMM_PAGE_DYLD_FLAGS (_COMM_PAGE_START_ADDRESS+0x160) // uint64_t export kern.dyld_system_flags to userspace
369
370 // aligning to 128 bytes for cacheline/fabric size
371 #define _COMM_PAGE_CPU_QUIESCENT_COUNTER (_COMM_PAGE_START_ADDRESS+0x180) // uint64_t, but reserve the whole 128 (0x80) bytes
372
373 #define _COMM_PAGE_CPU_TO_CLUSTER (_COMM_PAGE_START_ADDRESS+0x200) // 256 bytes reserved for (logical) CPU_ID -> CLUSTER_ID mappings
374
375 // Apple Security Bounty random values
376 #define _COMM_PAGE_ASB_TARGET_VALUE (_COMM_PAGE_START_ADDRESS+0x320) // uint64_t for random value
377 #define _COMM_PAGE_ASB_TARGET_ADDRESS (_COMM_PAGE_START_ADDRESS+0x328) // uint64_t for random target address
378 #define _COMM_PAGE_ASB_TARGET_KERN_VALUE (_COMM_PAGE_START_ADDRESS+0x330) // uint64_t for random kernel value
379 #define _COMM_PAGE_ASB_TARGET_KERN_ADDRESS (_COMM_PAGE_START_ADDRESS+0x338) // uint64_t for random kernel target address
380
381 #define _COMM_PAGE_APT_MSG_POLICY (_COMM_PAGE_START_ADDRESS+0x340) // uint8_t for APT_MSG policy
382
383 #define _COMM_PAGE_APT_ACTIVE (_COMM_PAGE_START_ADDRESS+0x341) // uint8_t for APT active status (infrequently mutated)
384
385 #if defined(PRIVATE)
386 #define _COMM_PAGE_SECURITY_RESEARCH_DEVICE_ERM_ACTIVE (_COMM_PAGE_START_ADDRESS+0x342) // uint8_t for ERM active status (set at boot time)
387 #else
388 #define _COMM_PAGE_RESERVED_0 (_COMM_PAGE_START_ADDRESS+0x342)
389 #endif
390
391 #define _COMM_PAGE_END (_COMM_PAGE_START_ADDRESS+0xfff) // end of common page
392
393 #if defined(__LP64__)
394 #if KERNEL_PRIVATE
395 #define _COMM_PAGE64_TEXT_START_ADDRESS (_get_commpage_text_priv_address()) // Address through physical aperture
396 #endif
397 /* Offset in bytes from start of text comm page to get to these functions. Start
398 * address to text comm page is from apple array */
399 #define _COMM_PAGE_TEXT_ATOMIC_ENQUEUE (0x0)
400 #define _COMM_PAGE_TEXT_ATOMIC_DEQUEUE (0x4)
401
402 #else /* __LP64__ */
403 /* No 32 bit text region */
404 #endif /* __LP64__ */
405
406 #endif /* defined (__arm__) || defined (__arm64__) */
407 #endif /* _ARM_CPU_CAPABILITIES_H */
408 #endif /* PRIVATE */
409