1 | /* |
2 | * Copyright (c) 2017 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 | #ifndef _MACHDEP_INTERNAL_H_ |
29 | #define _MACHDEP_INTERNAL_H_ |
30 | |
31 | #include <machine/types.h> |
32 | |
33 | #include <pexpert/arm64/board_config.h> |
34 | |
35 | #ifdef MACH_KERNEL_PRIVATE |
36 | |
37 | /* We cache the following in EL0 registers |
38 | * TPIDRRO_EL0 |
39 | * - the current cthread pointer |
40 | * TPIDR_EL0 |
41 | * - the current CPU number (12 bits) |
42 | * - the current logical cluster id (8 bits) |
43 | * |
44 | * NOTE: Keep this in sync with libsyscall/os/tsd.h, |
45 | * specifically _os_cpu_number(), _os_cpu_cluster_number() |
46 | */ |
47 | #define MACHDEP_TPIDR_CPUNUM_SHIFT 0 |
48 | #define MACHDEP_TPIDR_CPUNUM_MASK 0x0000000000000fff |
49 | #define MACHDEP_TPIDR_CLUSTERID_SHIFT 12 |
50 | #define MACHDEP_TPIDR_CLUSTERID_MASK 0x00000000000ff000 |
51 | |
52 | #endif // MACH_KERNEL_PRIVATE |
53 | |
54 | /* |
55 | * Machine Thread Flags (machine_thread.flags) |
56 | */ |
57 | |
58 | /* Thread is entitled to use x18, don't smash it when switching to thread. */ |
59 | #if !__ARM_KERNEL_PROTECT__ |
60 | #define ARM_MACHINE_THREAD_PRESERVE_X18_SHIFT 0 |
61 | #define ARM_MACHINE_THREAD_PRESERVE_X18 (1 << ARM_MACHINE_THREAD_PRESERVE_X18_SHIFT) |
62 | #endif /* !__ARM_KERNEL_PROTECT__ */ |
63 | |
64 | #if defined(HAS_APPLE_PAC) |
65 | #define ARM_MACHINE_THREAD_DISABLE_USER_JOP_SHIFT 1 |
66 | #define ARM_MACHINE_THREAD_DISABLE_USER_JOP (1 << ARM_MACHINE_THREAD_DISABLE_USER_JOP_SHIFT) |
67 | #endif /* HAS_APPLE_PAC */ |
68 | |
69 | #endif /* _MACHDEP_INTERNAL_H_ */ |
70 | |