| /* ARMv8-M Secure Extensions intrinsics include file. |
| |
| Copyright (C) 2015-2022 Free Software Foundation, Inc. |
| Contributed by ARM Ltd. |
| |
| This file is part of GCC. |
| |
| GCC is free software; you can redistribute it and/or modify it |
| under the terms of the GNU General Public License as published |
| by the Free Software Foundation; either version 3, or (at your |
| option) any later version. |
| |
| GCC is distributed in the hope that it will be useful, but WITHOUT |
| ANY WARRANTY; without even the implied warranty of MERCHANTABILITY |
| or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public |
| License for more details. |
| |
| Under Section 7 of GPL version 3, you are granted additional |
| permissions described in the GCC Runtime Library Exception, version |
| 3.1, as published by the Free Software Foundation. |
| |
| You should have received a copy of the GNU General Public License and |
| a copy of the GCC Runtime Library Exception along with this program; |
| see the files COPYING3 and COPYING.RUNTIME respectively. If not, see |
| <http://www.gnu.org/licenses/>. */ |
| |
| |
| #ifndef _GCC_ARM_CMSE_H |
| #define _GCC_ARM_CMSE_H |
| |
| #ifdef __cplusplus |
| extern "C" { |
| #endif |
| |
| #if __ARM_FEATURE_CMSE & 1 |
| |
| #include <stddef.h> |
| |
| #ifdef __ARM_BIG_ENDIAN |
| |
| typedef union { |
| struct cmse_address_info { |
| #if __ARM_FEATURE_CMSE & 2 |
| unsigned idau_region:8; |
| unsigned idau_region_valid:1; |
| unsigned secure:1; |
| unsigned nonsecure_readwrite_ok:1; |
| unsigned nonsecure_read_ok:1; |
| #else |
| unsigned :12; |
| #endif |
| unsigned readwrite_ok:1; |
| unsigned read_ok:1; |
| #if __ARM_FEATURE_CMSE & 2 |
| unsigned sau_region_valid:1; |
| #else |
| unsigned :1; |
| #endif |
| unsigned mpu_region_valid:1; |
| #if __ARM_FEATURE_CMSE & 2 |
| unsigned sau_region:8; |
| #else |
| unsigned :8; |
| #endif |
| unsigned mpu_region:8; |
| } flags; |
| unsigned value; |
| } cmse_address_info_t; |
| |
| #else |
| |
| typedef union { |
| struct cmse_address_info { |
| unsigned mpu_region:8; |
| #if __ARM_FEATURE_CMSE & 2 |
| unsigned sau_region:8; |
| #else |
| unsigned :8; |
| #endif |
| unsigned mpu_region_valid:1; |
| #if __ARM_FEATURE_CMSE & 2 |
| unsigned sau_region_valid:1; |
| #else |
| unsigned :1; |
| #endif |
| unsigned read_ok:1; |
| unsigned readwrite_ok:1; |
| #if __ARM_FEATURE_CMSE & 2 |
| unsigned nonsecure_read_ok:1; |
| unsigned nonsecure_readwrite_ok:1; |
| unsigned secure:1; |
| unsigned idau_region_valid:1; |
| unsigned idau_region:8; |
| #else |
| unsigned :12; |
| #endif |
| } flags; |
| unsigned value; |
| } cmse_address_info_t; |
| |
| #endif /* __ARM_BIG_ENDIAN */ |
| |
| #define cmse_TT_fptr(p) (__cmse_TT_fptr ((__cmse_fptr)(p))) |
| |
| typedef void (*__cmse_fptr)(void); |
| |
| #define __CMSE_TT_ASM(flags) \ |
| { \ |
| cmse_address_info_t __result; \ |
| __asm__ ("tt" # flags " %0,%1" \ |
| : "=r"(__result) \ |
| : "r"(__p) \ |
| : "memory"); \ |
| return __result; \ |
| } |
| |
| __extension__ static __inline __attribute__ ((__always_inline__)) |
| cmse_address_info_t |
| __cmse_TT_fptr (__cmse_fptr __p) |
| __CMSE_TT_ASM () |
| |
| __extension__ static __inline __attribute__ ((__always_inline__)) |
| cmse_address_info_t |
| cmse_TT (void *__p) |
| __CMSE_TT_ASM () |
| |
| #define cmse_TTT_fptr(p) (__cmse_TTT_fptr ((__cmse_fptr)(p))) |
| |
| __extension__ static __inline __attribute__ ((__always_inline__)) |
| cmse_address_info_t |
| __cmse_TTT_fptr (__cmse_fptr __p) |
| __CMSE_TT_ASM (t) |
| |
| __extension__ static __inline __attribute__ ((__always_inline__)) |
| cmse_address_info_t |
| cmse_TTT (void *__p) |
| __CMSE_TT_ASM (t) |
| |
| #if __ARM_FEATURE_CMSE & 2 |
| |
| #define cmse_TTA_fptr(p) (__cmse_TTA_fptr ((__cmse_fptr)(p))) |
| |
| __extension__ static __inline __attribute__ ((__always_inline__)) |
| cmse_address_info_t |
| __cmse_TTA_fptr (__cmse_fptr __p) |
| __CMSE_TT_ASM (a) |
| |
| __extension__ static __inline __attribute__ ((__always_inline__)) |
| cmse_address_info_t |
| cmse_TTA (void *__p) |
| __CMSE_TT_ASM (a) |
| |
| #define cmse_TTAT_fptr(p) (__cmse_TTAT_fptr ((__cmse_fptr)(p))) |
| |
| __extension__ static __inline cmse_address_info_t |
| __attribute__ ((__always_inline__)) |
| __cmse_TTAT_fptr (__cmse_fptr __p) |
| __CMSE_TT_ASM (at) |
| |
| __extension__ static __inline cmse_address_info_t |
| __attribute__ ((__always_inline__)) |
| cmse_TTAT (void *__p) |
| __CMSE_TT_ASM (at) |
| |
| /* FIXME: diagnose use outside cmse_nonsecure_entry functions. */ |
| __extension__ static __inline int __attribute__ ((__always_inline__)) |
| __attribute__ ((warn_unused_result)) |
| cmse_nonsecure_caller (void) |
| { |
| return __builtin_arm_cmse_nonsecure_caller (); |
| } |
| |
| #define CMSE_AU_NONSECURE 2 |
| #define CMSE_MPU_NONSECURE 16 |
| #define CMSE_NONSECURE 18 |
| |
| #define cmse_nsfptr_create(p) ((__typeof__ ((p))) ((__INTPTR_TYPE__) (p) & ~1)) |
| |
| #define cmse_is_nsfptr(p) (!((__INTPTR_TYPE__) (p) & 1)) |
| |
| #endif /* __ARM_FEATURE_CMSE & 2 */ |
| |
| #define CMSE_MPU_UNPRIV 4 |
| #define CMSE_MPU_READWRITE 1 |
| #define CMSE_MPU_READ 8 |
| |
| __extension__ void * |
| __attribute__ ((warn_unused_result)) |
| cmse_check_address_range (void *, size_t, int); |
| |
| #define cmse_check_pointed_object(p, f) \ |
| ((__typeof__ ((p))) cmse_check_address_range ((p), sizeof (*(p)), (f))) |
| |
| #endif /* __ARM_FEATURE_CMSE & 1 */ |
| |
| #ifdef __cplusplus |
| } |
| #endif |
| |
| #endif /* _GCC_ARM_CMSE_H */ |