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/* 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 */
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