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de7b5723 AV |
1 | /* ARMv8-M Secure Extensions intrinsics include file. |
2 | ||
7adcbafe | 3 | Copyright (C) 2015-2022 Free Software Foundation, Inc. |
de7b5723 AV |
4 | Contributed by ARM Ltd. |
5 | ||
6 | This file is part of GCC. | |
7 | ||
8 | GCC is free software; you can redistribute it and/or modify it | |
9 | under the terms of the GNU General Public License as published | |
10 | by the Free Software Foundation; either version 3, or (at your | |
11 | option) any later version. | |
12 | ||
13 | GCC is distributed in the hope that it will be useful, but WITHOUT | |
14 | ANY WARRANTY; without even the implied warranty of MERCHANTABILITY | |
15 | or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public | |
16 | License for more details. | |
17 | ||
18 | Under Section 7 of GPL version 3, you are granted additional | |
19 | permissions described in the GCC Runtime Library Exception, version | |
20 | 3.1, as published by the Free Software Foundation. | |
21 | ||
22 | You should have received a copy of the GNU General Public License and | |
23 | a copy of the GCC Runtime Library Exception along with this program; | |
24 | see the files COPYING3 and COPYING.RUNTIME respectively. If not, see | |
25 | <http://www.gnu.org/licenses/>. */ | |
26 | ||
27 | ||
28 | #ifndef _GCC_ARM_CMSE_H | |
29 | #define _GCC_ARM_CMSE_H | |
30 | ||
31 | #ifdef __cplusplus | |
32 | extern "C" { | |
33 | #endif | |
34 | ||
35 | #if __ARM_FEATURE_CMSE & 1 | |
36 | ||
37 | #include <stddef.h> | |
de7b5723 AV |
38 | |
39 | #ifdef __ARM_BIG_ENDIAN | |
40 | ||
41 | typedef union { | |
42 | struct cmse_address_info { | |
43 | #if __ARM_FEATURE_CMSE & 2 | |
44 | unsigned idau_region:8; | |
45 | unsigned idau_region_valid:1; | |
46 | unsigned secure:1; | |
47 | unsigned nonsecure_readwrite_ok:1; | |
48 | unsigned nonsecure_read_ok:1; | |
49 | #else | |
50 | unsigned :12; | |
51 | #endif | |
52 | unsigned readwrite_ok:1; | |
53 | unsigned read_ok:1; | |
54 | #if __ARM_FEATURE_CMSE & 2 | |
55 | unsigned sau_region_valid:1; | |
56 | #else | |
57 | unsigned :1; | |
58 | #endif | |
59 | unsigned mpu_region_valid:1; | |
60 | #if __ARM_FEATURE_CMSE & 2 | |
61 | unsigned sau_region:8; | |
62 | #else | |
63 | unsigned :8; | |
64 | #endif | |
65 | unsigned mpu_region:8; | |
66 | } flags; | |
67 | unsigned value; | |
68 | } cmse_address_info_t; | |
69 | ||
70 | #else | |
71 | ||
72 | typedef union { | |
73 | struct cmse_address_info { | |
74 | unsigned mpu_region:8; | |
75 | #if __ARM_FEATURE_CMSE & 2 | |
76 | unsigned sau_region:8; | |
77 | #else | |
78 | unsigned :8; | |
79 | #endif | |
80 | unsigned mpu_region_valid:1; | |
81 | #if __ARM_FEATURE_CMSE & 2 | |
82 | unsigned sau_region_valid:1; | |
83 | #else | |
84 | unsigned :1; | |
85 | #endif | |
86 | unsigned read_ok:1; | |
87 | unsigned readwrite_ok:1; | |
88 | #if __ARM_FEATURE_CMSE & 2 | |
89 | unsigned nonsecure_read_ok:1; | |
90 | unsigned nonsecure_readwrite_ok:1; | |
91 | unsigned secure:1; | |
92 | unsigned idau_region_valid:1; | |
93 | unsigned idau_region:8; | |
94 | #else | |
95 | unsigned :12; | |
96 | #endif | |
97 | } flags; | |
98 | unsigned value; | |
99 | } cmse_address_info_t; | |
100 | ||
101 | #endif /* __ARM_BIG_ENDIAN */ | |
102 | ||
103 | #define cmse_TT_fptr(p) (__cmse_TT_fptr ((__cmse_fptr)(p))) | |
104 | ||
105 | typedef void (*__cmse_fptr)(void); | |
106 | ||
107 | #define __CMSE_TT_ASM(flags) \ | |
108 | { \ | |
109 | cmse_address_info_t __result; \ | |
110 | __asm__ ("tt" # flags " %0,%1" \ | |
111 | : "=r"(__result) \ | |
112 | : "r"(__p) \ | |
113 | : "memory"); \ | |
114 | return __result; \ | |
115 | } | |
116 | ||
117 | __extension__ static __inline __attribute__ ((__always_inline__)) | |
118 | cmse_address_info_t | |
119 | __cmse_TT_fptr (__cmse_fptr __p) | |
120 | __CMSE_TT_ASM () | |
121 | ||
122 | __extension__ static __inline __attribute__ ((__always_inline__)) | |
123 | cmse_address_info_t | |
124 | cmse_TT (void *__p) | |
125 | __CMSE_TT_ASM () | |
126 | ||
127 | #define cmse_TTT_fptr(p) (__cmse_TTT_fptr ((__cmse_fptr)(p))) | |
128 | ||
129 | __extension__ static __inline __attribute__ ((__always_inline__)) | |
130 | cmse_address_info_t | |
131 | __cmse_TTT_fptr (__cmse_fptr __p) | |
132 | __CMSE_TT_ASM (t) | |
133 | ||
134 | __extension__ static __inline __attribute__ ((__always_inline__)) | |
135 | cmse_address_info_t | |
136 | cmse_TTT (void *__p) | |
137 | __CMSE_TT_ASM (t) | |
138 | ||
139 | #if __ARM_FEATURE_CMSE & 2 | |
140 | ||
141 | #define cmse_TTA_fptr(p) (__cmse_TTA_fptr ((__cmse_fptr)(p))) | |
142 | ||
143 | __extension__ static __inline __attribute__ ((__always_inline__)) | |
144 | cmse_address_info_t | |
145 | __cmse_TTA_fptr (__cmse_fptr __p) | |
146 | __CMSE_TT_ASM (a) | |
147 | ||
148 | __extension__ static __inline __attribute__ ((__always_inline__)) | |
149 | cmse_address_info_t | |
150 | cmse_TTA (void *__p) | |
151 | __CMSE_TT_ASM (a) | |
152 | ||
153 | #define cmse_TTAT_fptr(p) (__cmse_TTAT_fptr ((__cmse_fptr)(p))) | |
154 | ||
155 | __extension__ static __inline cmse_address_info_t | |
156 | __attribute__ ((__always_inline__)) | |
157 | __cmse_TTAT_fptr (__cmse_fptr __p) | |
158 | __CMSE_TT_ASM (at) | |
159 | ||
160 | __extension__ static __inline cmse_address_info_t | |
161 | __attribute__ ((__always_inline__)) | |
162 | cmse_TTAT (void *__p) | |
163 | __CMSE_TT_ASM (at) | |
164 | ||
8261e476 AV |
165 | /* FIXME: diagnose use outside cmse_nonsecure_entry functions. */ |
166 | __extension__ static __inline int __attribute__ ((__always_inline__)) | |
f0efd925 | 167 | __attribute__ ((warn_unused_result)) |
8261e476 AV |
168 | cmse_nonsecure_caller (void) |
169 | { | |
170 | return __builtin_arm_cmse_nonsecure_caller (); | |
171 | } | |
172 | ||
de7b5723 AV |
173 | #define CMSE_AU_NONSECURE 2 |
174 | #define CMSE_MPU_NONSECURE 16 | |
175 | #define CMSE_NONSECURE 18 | |
176 | ||
9063f9ed | 177 | #define cmse_nsfptr_create(p) ((__typeof__ ((p))) ((__INTPTR_TYPE__) (p) & ~1)) |
de7b5723 | 178 | |
fcf4f831 | 179 | #define cmse_is_nsfptr(p) (!((__INTPTR_TYPE__) (p) & 1)) |
de7b5723 AV |
180 | |
181 | #endif /* __ARM_FEATURE_CMSE & 2 */ | |
182 | ||
183 | #define CMSE_MPU_UNPRIV 4 | |
184 | #define CMSE_MPU_READWRITE 1 | |
185 | #define CMSE_MPU_READ 8 | |
186 | ||
187 | __extension__ void * | |
f0efd925 | 188 | __attribute__ ((warn_unused_result)) |
de7b5723 AV |
189 | cmse_check_address_range (void *, size_t, int); |
190 | ||
191 | #define cmse_check_pointed_object(p, f) \ | |
9063f9ed | 192 | ((__typeof__ ((p))) cmse_check_address_range ((p), sizeof (*(p)), (f))) |
de7b5723 AV |
193 | |
194 | #endif /* __ARM_FEATURE_CMSE & 1 */ | |
195 | ||
196 | #ifdef __cplusplus | |
197 | } | |
198 | #endif | |
199 | ||
200 | #endif /* _GCC_ARM_CMSE_H */ |