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Associate secure context with task handle

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The secure side context management code now checks that the secure
context being saved or restored belongs to the task being switched-out
or switched-in respectively.

Signed-off-by: Gaurav Aggarwal <aggarg@amazon.com>
This commit is contained in:
Gaurav Aggarwal 2021-08-04 14:57:45 -07:00 • committed by Gaurav-Aggarwal-AWS
parent ccaa0f4d6e
commit 61f7560243
53 changed files with 1796 additions and 1353 deletions
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20
portable/ARMv8M/secure/context/secure_context.h
View file

@ -38,7 +38,12 @@
/**
* @brief PSP value when no secure context is loaded.
*/
#define securecontextNO_STACK 0x0
#define securecontextNO_STACK 0x0
/**
* @brief Invalid context ID.
*/
#define securecontextINVALID_CONTEXT_ID 0UL
/*-----------------------------------------------------------*/
/**
@ -52,6 +57,7 @@ typedef struct SecureContext
uint8_t * pucCurrentStackPointer; /**< Current value of stack pointer (PSP). */
uint8_t * pucStackLimit; /**< Last location of the stack memory (PSPLIM). */
uint8_t * pucStackStart; /**< First location of the stack memory. */
void * pvTaskHandle; /**< Task handle of the task this context is associated with. */
} SecureContext_t;
/*-----------------------------------------------------------*/
@ -86,9 +92,11 @@ void SecureContext_Init( void );
*/
#if ( configENABLE_MPU == 1 )
SecureContextHandle_t SecureContext_AllocateContext( uint32_t ulSecureStackSize,
uint32_t ulIsTaskPrivileged );
uint32_t ulIsTaskPrivileged,
void * pvTaskHandle );
#else /* configENABLE_MPU */
SecureContextHandle_t SecureContext_AllocateContext( uint32_t ulSecureStackSize );
SecureContextHandle_t SecureContext_AllocateContext( uint32_t ulSecureStackSize,
void * pvTaskHandle );
#endif /* configENABLE_MPU */
/**
@ -100,7 +108,7 @@ void SecureContext_Init( void );
* @param[in] xSecureContextHandle Context handle corresponding to the
* context to be freed.
*/
void SecureContext_FreeContext( SecureContextHandle_t xSecureContextHandle );
void SecureContext_FreeContext( SecureContextHandle_t xSecureContextHandle, void * pvTaskHandle );
/**
* @brief Loads the given context.
@ -111,7 +119,7 @@ void SecureContext_FreeContext( SecureContextHandle_t xSecureContextHandle );
* @param[in] xSecureContextHandle Context handle corresponding to the context
* to be loaded.
*/
void SecureContext_LoadContext( SecureContextHandle_t xSecureContextHandle );
void SecureContext_LoadContext( SecureContextHandle_t xSecureContextHandle, void * pvTaskHandle );
/**
* @brief Saves the given context.
@ -122,6 +130,6 @@ void SecureContext_LoadContext( SecureContextHandle_t xSecureContextHandle );
* @param[in] xSecureContextHandle Context handle corresponding to the context
* to be saved.
*/
void SecureContext_SaveContext( SecureContextHandle_t xSecureContextHandle );
void SecureContext_SaveContext( SecureContextHandle_t xSecureContextHandle, void * pvTaskHandle );
#endif /* __SECURE_CONTEXT_H__ */