blob: 87a573cc46fad6ecdd81de4ae885bac95bddf09a (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
|
// Copyright 2019 The gVisor Authors.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// +build arm64
package ring0
// Useful bits.
const (
_PGD_PGT_BASE = 0x1000
_PGD_PGT_SIZE = 0x1000
_PUD_PGT_BASE = 0x2000
_PUD_PGT_SIZE = 0x1000
_PMD_PGT_BASE = 0x3000
_PMD_PGT_SIZE = 0x4000
_PTE_PGT_BASE = 0x7000
_PTE_PGT_SIZE = 0x1000
)
const (
// DAIF bits:debug, sError, IRQ, FIQ.
_PSR_D_BIT = 0x00000200
_PSR_A_BIT = 0x00000100
_PSR_I_BIT = 0x00000080
_PSR_F_BIT = 0x00000040
_PSR_DAIF_SHIFT = 6
_PSR_DAIF_MASK = 0xf << _PSR_DAIF_SHIFT
// PSR bits.
_PSR_MODE_EL0t = 0x00000000
_PSR_MODE_EL1t = 0x00000004
_PSR_MODE_EL1h = 0x00000005
_PSR_MODE_MASK = 0x0000000f
PsrFlagsClear = _PSR_MODE_MASK | _PSR_DAIF_MASK
PsrModeMask = _PSR_MODE_MASK
// KernelFlagsSet should always be set in the kernel.
KernelFlagsSet = _PSR_MODE_EL1h | _PSR_D_BIT | _PSR_A_BIT | _PSR_I_BIT | _PSR_F_BIT
// UserFlagsSet are always set in userspace.
UserFlagsSet = _PSR_MODE_EL0t
)
// Vector is an exception vector.
type Vector uintptr
// Exception vectors.
const (
El1SyncInvalid = iota
El1IrqInvalid
El1FiqInvalid
El1ErrorInvalid
El1Sync
El1Irq
El1Fiq
El1Error
El0Sync
El0Irq
El0Fiq
El0Error
El0Sync_invalid
El0Irq_invalid
El0Fiq_invalid
El0Error_invalid
El1Sync_da
El1Sync_ia
El1Sync_sp_pc
El1Sync_undef
El1Sync_dbg
El1Sync_inv
El0Sync_svc
El0Sync_da
El0Sync_ia
El0Sync_fpsimd_acc
El0Sync_sve_acc
El0Sync_sys
El0Sync_sp_pc
El0Sync_undef
El0Sync_dbg
El0Sync_inv
_NR_INTERRUPTS
)
// System call vectors.
const (
Syscall Vector = El0Sync_svc
PageFault Vector = El0Sync_da
VirtualizationException Vector = El0Error
)
// VirtualAddressBits returns the number bits available for virtual addresses.
func VirtualAddressBits() uint32 {
return 48
}
// PhysicalAddressBits returns the number of bits available for physical addresses.
func PhysicalAddressBits() uint32 {
return 40
}
|
