1 files changed, 180 insertions, 0 deletions
diff --git a/tmp/STM32F10x_StdPeriph_Lib_V3.5.0/Project/STM32F10x_StdPeriph_Examples/CortexM3/Mode_Privilege/main.c b/tmp/STM32F10x_StdPeriph_Lib_V3.5.0/Project/STM32F10x_StdPeriph_Examples/CortexM3/Mode_Privilege/main.c
new file mode 100644
index 0000000..9b97506
--- /dev/null
+++ b/tmp/STM32F10x_StdPeriph_Lib_V3.5.0/Project/STM32F10x_StdPeriph_Examples/CortexM3/Mode_Privilege/main.c
@@ -0,0 +1,180 @@
+/**
+  ******************************************************************************
+  * @file    CortexM3/Mode_Privilege/main.c 
+  * @author  MCD Application Team
+  * @version V3.5.0
+  * @date    08-April-2011
+  * @brief   Main program body.
+  ******************************************************************************
+  * @attention
+  *
+  * THE PRESENT FIRMWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS
+  * WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE
+  * TIME. AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY
+  * DIRECT, INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING
+  * FROM THE CONTENT OF SUCH FIRMWARE AND/OR THE USE MADE BY CUSTOMERS OF THE
+  * CODING INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS.
+  *
+  * <h2><center>&copy; COPYRIGHT 2011 STMicroelectronics</center></h2>
+  ******************************************************************************
+  */ 
+
+/* Includes ------------------------------------------------------------------*/
+#include "stm32f10x.h"
+
+/** @addtogroup STM32F10x_StdPeriph_Examples
+  * @{
+  */
+
+/** @addtogroup CortexM3_Mode_Privilege
+  * @{
+  */ 
+
+/* Private typedef -----------------------------------------------------------*/
+/* Private define ------------------------------------------------------------*/
+#define SP_PROCESS_SIZE             0x200  /* Process stack size */
+#define SP_PROCESS                  0x02   /* Process stack */
+#define SP_MAIN                     0x00   /* Main stack */
+#define THREAD_MODE_PRIVILEGED      0x00   /* Thread mode has privileged access */
+#define THREAD_MODE_UNPRIVILEGED    0x01   /* Thread mode has unprivileged access */
+
+/* Private macro -------------------------------------------------------------*/ 
+#if defined ( __CC_ARM   )
+__ASM void __SVC(void) 
+{ 
+  SVC 0x01 
+  BX R14
+}
+#elif defined ( __ICCARM__ )
+static __INLINE  void __SVC()                     { __ASM ("svc 0x01");}
+#elif defined   (  __GNUC__  )
+static __INLINE void __SVC()                      { __ASM volatile ("svc 0x01");}
+
+#endif
+
+/* Private variables ---------------------------------------------------------*/
+__IO uint8_t PSPMemAlloc[SP_PROCESS_SIZE];
+__IO uint32_t Index = 0, PSPValue = 0, CurrentStack = 0, ThreadMode = 0;
+
+/* Private function prototypes -----------------------------------------------*/
+/* Private functions ---------------------------------------------------------*/
+
+/**
+  * @brief   Main program.
+  * @param  None
+  * @retval None
+  */
+int main(void)
+{
+  /*!< At this stage the microcontroller clock setting is already configured, 
+       this is done through SystemInit() function which is called from startup
+       file (startup_stm32f10x_xx.s) before to branch to application main.
+       To reconfigure the default setting of SystemInit() function, refer to
+       system_stm32f10x.c file
+     */     
+       
+/* Switch Thread mode Stack from Main to Process -----------------------------*/
+  /* Initialize memory reserved for Process Stack */
+  for(Index = 0; Index < SP_PROCESS_SIZE; Index++)
+  {
+    PSPMemAlloc[Index] = 0x00;
+  }
+
+  /* Set Process stack value */ 
+  __set_PSP((uint32_t)PSPMemAlloc + SP_PROCESS_SIZE);
+  
+  /* Select Process Stack as Thread mode Stack */
+  __set_CONTROL(SP_PROCESS);
+
+  /* Get the Thread mode stack used */
+  if((__get_CONTROL() & 0x02) == SP_MAIN)
+  {
+    /* Main stack is used as the current stack */
+    CurrentStack = SP_MAIN;
+  }
+  else
+  {
+    /* Process stack is used as the current stack */
+    CurrentStack = SP_PROCESS;
+
+    /* Get process stack pointer value */
+    PSPValue = __get_PSP();	
+  }
+  
+/* Switch Thread mode from privileged to unprivileged ------------------------*/
+  /* Thread mode has unprivileged access */
+  __set_CONTROL(THREAD_MODE_UNPRIVILEGED | SP_PROCESS);
+
+  /* Unprivileged access mainly affect ability to:
+      - Use or not use certain instructions such as MSR fields
+      - Access System Control Space (SCS) registers such as NVIC and SysTick */
+
+  /* Check Thread mode privilege status */
+  if((__get_CONTROL() & 0x01) == THREAD_MODE_PRIVILEGED)
+  {
+    /* Thread mode has privileged access  */
+    ThreadMode = THREAD_MODE_PRIVILEGED;
+  }
+  else
+  {
+    /* Thread mode has unprivileged access*/
+    ThreadMode = THREAD_MODE_UNPRIVILEGED;
+  }
+
+/* Switch back Thread mode from unprivileged to privileged -------------------*/  
+  /* Try to switch back Thread mode to privileged (Not possible, this can be
+     done only in Handler mode) */
+  __set_CONTROL(THREAD_MODE_PRIVILEGED | SP_PROCESS);
+
+  /* Generate a system call exception, and in the ISR switch back Thread mode
+    to privileged */
+  __SVC();
+
+  /* Check Thread mode privilege status */
+  if((__get_CONTROL() & 0x01) == THREAD_MODE_PRIVILEGED)
+  {
+    /* Thread mode has privileged access  */
+    ThreadMode = THREAD_MODE_PRIVILEGED;
+  }
+  else
+  {
+    /* Thread mode has unprivileged access*/
+    ThreadMode = THREAD_MODE_UNPRIVILEGED;
+  }
+
+  while (1)
+  {
+  }
+}
+
+#ifdef  USE_FULL_ASSERT
+
+/**
+  * @brief  Reports the name of the source file and the source line number
+  *         where the assert_param error has occurred.
+  * @param  file: pointer to the source file name
+  * @param  line: assert_param error line source number
+  * @retval None
+  */
+void assert_failed(uint8_t* file, uint32_t line)
+{ 
+  /* User can add his own implementation to report the file name and line number,
+     ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */
+
+  /* Infinite loop */
+  while (1)
+  {
+  }
+}
+
+#endif
+
+/**
+  * @}
+  */ 
+
+/**
+  * @}
+  */ 
+
+/******************* (C) COPYRIGHT 2011 STMicroelectronics *****END OF FILE****/