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1 /* ARMv8-M Secure Extensions intrinsics include file.
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2
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3 Copyright (C) 2015-2018 Free Software Foundation, Inc.
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4 Contributed by ARM Ltd.
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5
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6 This file is part of GCC.
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7
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8 GCC is free software; you can redistribute it and/or modify it
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9 under the terms of the GNU General Public License as published
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10 by the Free Software Foundation; either version 3, or (at your
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11 option) any later version.
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12
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13 GCC is distributed in the hope that it will be useful, but WITHOUT
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14 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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15 or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
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16 License for more details.
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17
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18 Under Section 7 of GPL version 3, you are granted additional
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19 permissions described in the GCC Runtime Library Exception, version
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20 3.1, as published by the Free Software Foundation.
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21
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22 You should have received a copy of the GNU General Public License and
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23 a copy of the GCC Runtime Library Exception along with this program;
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24 see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
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25 <http://www.gnu.org/licenses/>. */
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26
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27
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28 #ifndef _GCC_ARM_CMSE_H
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29 #define _GCC_ARM_CMSE_H
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30
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31 #ifdef __cplusplus
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32 extern "C" {
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33 #endif
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34
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35 #if __ARM_FEATURE_CMSE & 1
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36
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37 #include <stddef.h>
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38
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39 #ifdef __ARM_BIG_ENDIAN
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40
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41 typedef union {
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42 struct cmse_address_info {
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43 #if __ARM_FEATURE_CMSE & 2
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44 unsigned idau_region:8;
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45 unsigned idau_region_valid:1;
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46 unsigned secure:1;
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47 unsigned nonsecure_readwrite_ok:1;
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48 unsigned nonsecure_read_ok:1;
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49 #else
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50 unsigned :12;
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51 #endif
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52 unsigned readwrite_ok:1;
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53 unsigned read_ok:1;
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54 #if __ARM_FEATURE_CMSE & 2
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55 unsigned sau_region_valid:1;
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56 #else
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57 unsigned :1;
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58 #endif
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59 unsigned mpu_region_valid:1;
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60 #if __ARM_FEATURE_CMSE & 2
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61 unsigned sau_region:8;
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62 #else
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63 unsigned :8;
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64 #endif
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65 unsigned mpu_region:8;
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66 } flags;
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67 unsigned value;
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68 } cmse_address_info_t;
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69
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70 #else
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71
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72 typedef union {
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73 struct cmse_address_info {
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74 unsigned mpu_region:8;
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75 #if __ARM_FEATURE_CMSE & 2
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76 unsigned sau_region:8;
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77 #else
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78 unsigned :8;
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79 #endif
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80 unsigned mpu_region_valid:1;
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81 #if __ARM_FEATURE_CMSE & 2
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82 unsigned sau_region_valid:1;
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83 #else
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84 unsigned :1;
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85 #endif
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86 unsigned read_ok:1;
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87 unsigned readwrite_ok:1;
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88 #if __ARM_FEATURE_CMSE & 2
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89 unsigned nonsecure_read_ok:1;
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90 unsigned nonsecure_readwrite_ok:1;
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91 unsigned secure:1;
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92 unsigned idau_region_valid:1;
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93 unsigned idau_region:8;
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94 #else
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95 unsigned :12;
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96 #endif
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97 } flags;
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98 unsigned value;
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99 } cmse_address_info_t;
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100
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101 #endif /* __ARM_BIG_ENDIAN */
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102
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103 #define cmse_TT_fptr(p) (__cmse_TT_fptr ((__cmse_fptr)(p)))
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104
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105 typedef void (*__cmse_fptr)(void);
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106
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107 #define __CMSE_TT_ASM(flags) \
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108 { \
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109 cmse_address_info_t __result; \
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110 __asm__ ("tt" # flags " %0,%1" \
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111 : "=r"(__result) \
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112 : "r"(__p) \
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113 : "memory"); \
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114 return __result; \
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115 }
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116
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117 __extension__ static __inline __attribute__ ((__always_inline__))
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118 cmse_address_info_t
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119 __cmse_TT_fptr (__cmse_fptr __p)
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120 __CMSE_TT_ASM ()
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121
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122 __extension__ static __inline __attribute__ ((__always_inline__))
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123 cmse_address_info_t
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124 cmse_TT (void *__p)
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125 __CMSE_TT_ASM ()
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126
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127 #define cmse_TTT_fptr(p) (__cmse_TTT_fptr ((__cmse_fptr)(p)))
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128
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129 __extension__ static __inline __attribute__ ((__always_inline__))
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130 cmse_address_info_t
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131 __cmse_TTT_fptr (__cmse_fptr __p)
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132 __CMSE_TT_ASM (t)
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133
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134 __extension__ static __inline __attribute__ ((__always_inline__))
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135 cmse_address_info_t
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136 cmse_TTT (void *__p)
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137 __CMSE_TT_ASM (t)
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138
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139 #if __ARM_FEATURE_CMSE & 2
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140
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141 #define cmse_TTA_fptr(p) (__cmse_TTA_fptr ((__cmse_fptr)(p)))
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142
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143 __extension__ static __inline __attribute__ ((__always_inline__))
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144 cmse_address_info_t
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145 __cmse_TTA_fptr (__cmse_fptr __p)
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146 __CMSE_TT_ASM (a)
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147
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148 __extension__ static __inline __attribute__ ((__always_inline__))
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149 cmse_address_info_t
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150 cmse_TTA (void *__p)
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151 __CMSE_TT_ASM (a)
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152
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153 #define cmse_TTAT_fptr(p) (__cmse_TTAT_fptr ((__cmse_fptr)(p)))
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154
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155 __extension__ static __inline cmse_address_info_t
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156 __attribute__ ((__always_inline__))
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157 __cmse_TTAT_fptr (__cmse_fptr __p)
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158 __CMSE_TT_ASM (at)
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159
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160 __extension__ static __inline cmse_address_info_t
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161 __attribute__ ((__always_inline__))
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162 cmse_TTAT (void *__p)
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163 __CMSE_TT_ASM (at)
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164
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165 /* FIXME: diagnose use outside cmse_nonsecure_entry functions. */
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166 __extension__ static __inline int __attribute__ ((__always_inline__))
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167 cmse_nonsecure_caller (void)
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168 {
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169 return __builtin_arm_cmse_nonsecure_caller ();
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170 }
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171
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172 #define CMSE_AU_NONSECURE 2
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173 #define CMSE_MPU_NONSECURE 16
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174 #define CMSE_NONSECURE 18
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175
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131
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176 #define cmse_nsfptr_create(p) ((__typeof__ ((p))) ((__INTPTR_TYPE__) (p) & ~1))
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111
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177
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131
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178 #define cmse_is_nsfptr(p) (!((__INTPTR_TYPE__) (p) & 1))
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111
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179
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180 #endif /* __ARM_FEATURE_CMSE & 2 */
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181
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182 #define CMSE_MPU_UNPRIV 4
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183 #define CMSE_MPU_READWRITE 1
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184 #define CMSE_MPU_READ 8
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185
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186 __extension__ void *
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187 cmse_check_address_range (void *, size_t, int);
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188
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189 #define cmse_check_pointed_object(p, f) \
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131
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190 ((__typeof__ ((p))) cmse_check_address_range ((p), sizeof (*(p)), (f)))
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111
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191
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192 #endif /* __ARM_FEATURE_CMSE & 1 */
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193
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194 #ifdef __cplusplus
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195 }
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196 #endif
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197
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198 #endif /* _GCC_ARM_CMSE_H */
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