lib: Updated existing cmsis-core for stm32h7 support

Signed-off-by: Konstantin Vogel <konstantin.vogel@gmx.net>
Signed-off-by: Kevin O'Connor <kevin@koconnor.net>

1 files changed, 76 insertions, 12 deletions

diff --git a/lib/cmsis-core/core_cm0.h b/lib/cmsis-core/core_cm0.h
index a3f1b9ac..6441ff34 100644
--- a/lib/cmsis-core/core_cm0.h
+++ b/lib/cmsis-core/core_cm0.h
@@ -1,11 +1,11 @@
 /**************************************************************************//**
  * @file     core_cm0.h
  * @brief    CMSIS Cortex-M0 Core Peripheral Access Layer Header File
- * @version  V5.0.3
- * @date     10. January 2018
+ * @version  V5.0.8
+ * @date     21. August 2019
  ******************************************************************************/
 /*
- * Copyright (c) 2009-2018 Arm Limited. All rights reserved.
+ * Copyright (c) 2009-2019 Arm Limited. All rights reserved.
  *
  * SPDX-License-Identifier: Apache-2.0
  *
@@ -81,7 +81,7 @@
   #endif
 
 #elif defined (__ARMCC_VERSION) && (__ARMCC_VERSION >= 6010050)
-  #if defined __ARM_PCS_VFP
+  #if defined __ARM_FP
     #error "Compiler generates FPU instructions for a device without an FPU (check __FPU_PRESENT)"
   #endif
 
@@ -316,7 +316,7 @@ typedef struct
   __IOM uint32_t ISER[1U];               /*!< Offset: 0x000 (R/W)  Interrupt Set Enable Register */
         uint32_t RESERVED0[31U];
   __IOM uint32_t ICER[1U];               /*!< Offset: 0x080 (R/W)  Interrupt Clear Enable Register */
-        uint32_t RSERVED1[31U];
+        uint32_t RESERVED1[31U];
   __IOM uint32_t ISPR[1U];               /*!< Offset: 0x100 (R/W)  Interrupt Set Pending Register */
         uint32_t RESERVED2[31U];
   __IOM uint32_t ICPR[1U];               /*!< Offset: 0x180 (R/W)  Interrupt Clear Pending Register */
@@ -572,8 +572,8 @@ typedef struct
   #endif
   #include CMSIS_NVIC_VIRTUAL_HEADER_FILE
 #else
-/*#define NVIC_SetPriorityGrouping    __NVIC_SetPriorityGrouping   not available for Cortex-M0 */
-/*#define NVIC_GetPriorityGrouping    __NVIC_GetPriorityGrouping   not available for Cortex-M0 */
+  #define NVIC_SetPriorityGrouping    __NVIC_SetPriorityGrouping
+  #define NVIC_GetPriorityGrouping    __NVIC_GetPriorityGrouping
   #define NVIC_EnableIRQ              __NVIC_EnableIRQ
   #define NVIC_GetEnableIRQ           __NVIC_GetEnableIRQ
   #define NVIC_DisableIRQ             __NVIC_DisableIRQ
@@ -599,12 +599,20 @@ typedef struct
 #define NVIC_USER_IRQ_OFFSET          16
 
 
+/* The following EXC_RETURN values are saved the LR on exception entry */
+#define EXC_RETURN_HANDLER         (0xFFFFFFF1UL)     /* return to Handler mode, uses MSP after return                               */
+#define EXC_RETURN_THREAD_MSP      (0xFFFFFFF9UL)     /* return to Thread mode, uses MSP after return                                */
+#define EXC_RETURN_THREAD_PSP      (0xFFFFFFFDUL)     /* return to Thread mode, uses PSP after return                                */
+
+
 /* Interrupt Priorities are WORD accessible only under Armv6-M                  */
 /* The following MACROS handle generation of the register offset and byte masks */
 #define _BIT_SHIFT(IRQn)         (  ((((uint32_t)(int32_t)(IRQn))         )      &  0x03UL) * 8UL)
 #define _SHP_IDX(IRQn)           ( (((((uint32_t)(int32_t)(IRQn)) & 0x0FUL)-8UL) >>    2UL)      )
 #define _IP_IDX(IRQn)            (   (((uint32_t)(int32_t)(IRQn))                >>    2UL)      )
 
+#define __NVIC_SetPriorityGrouping(X) (void)(X)
+#define __NVIC_GetPriorityGrouping()  (0U)
 
 /**
   \brief   Enable Interrupt
@@ -616,7 +624,9 @@ __STATIC_INLINE void __NVIC_EnableIRQ(IRQn_Type IRQn)
 {
   if ((int32_t)(IRQn) >= 0)
   {
+    __COMPILER_BARRIER();
     NVIC->ISER[0U] = (uint32_t)(1UL << (((uint32_t)IRQn) & 0x1FUL));
+    __COMPILER_BARRIER();
   }
 }
 
@@ -758,6 +768,59 @@ __STATIC_INLINE uint32_t __NVIC_GetPriority(IRQn_Type IRQn)
 
 
 /**
+  \brief   Encode Priority
+  \details Encodes the priority for an interrupt with the given priority group,
+           preemptive priority value, and subpriority value.
+           In case of a conflict between priority grouping and available
+           priority bits (__NVIC_PRIO_BITS), the smallest possible priority group is set.
+  \param [in]     PriorityGroup  Used priority group.
+  \param [in]   PreemptPriority  Preemptive priority value (starting from 0).
+  \param [in]       SubPriority  Subpriority value (starting from 0).
+  \return                        Encoded priority. Value can be used in the function \ref NVIC_SetPriority().
+ */
+__STATIC_INLINE uint32_t NVIC_EncodePriority (uint32_t PriorityGroup, uint32_t PreemptPriority, uint32_t SubPriority)
+{
+  uint32_t PriorityGroupTmp = (PriorityGroup & (uint32_t)0x07UL);   /* only values 0..7 are used          */
+  uint32_t PreemptPriorityBits;
+  uint32_t SubPriorityBits;
+
+  PreemptPriorityBits = ((7UL - PriorityGroupTmp) > (uint32_t)(__NVIC_PRIO_BITS)) ? (uint32_t)(__NVIC_PRIO_BITS) : (uint32_t)(7UL - PriorityGroupTmp);
+  SubPriorityBits     = ((PriorityGroupTmp + (uint32_t)(__NVIC_PRIO_BITS)) < (uint32_t)7UL) ? (uint32_t)0UL : (uint32_t)((PriorityGroupTmp - 7UL) + (uint32_t)(__NVIC_PRIO_BITS));
+
+  return (
+           ((PreemptPriority & (uint32_t)((1UL << (PreemptPriorityBits)) - 1UL)) << SubPriorityBits) |
+           ((SubPriority     & (uint32_t)((1UL << (SubPriorityBits    )) - 1UL)))
+         );
+}
+
+
+/**
+  \brief   Decode Priority
+  \details Decodes an interrupt priority value with a given priority group to
+           preemptive priority value and subpriority value.
+           In case of a conflict between priority grouping and available
+           priority bits (__NVIC_PRIO_BITS) the smallest possible priority group is set.
+  \param [in]         Priority   Priority value, which can be retrieved with the function \ref NVIC_GetPriority().
+  \param [in]     PriorityGroup  Used priority group.
+  \param [out] pPreemptPriority  Preemptive priority value (starting from 0).
+  \param [out]     pSubPriority  Subpriority value (starting from 0).
+ */
+__STATIC_INLINE void NVIC_DecodePriority (uint32_t Priority, uint32_t PriorityGroup, uint32_t* const pPreemptPriority, uint32_t* const pSubPriority)
+{
+  uint32_t PriorityGroupTmp = (PriorityGroup & (uint32_t)0x07UL);   /* only values 0..7 are used          */
+  uint32_t PreemptPriorityBits;
+  uint32_t SubPriorityBits;
+
+  PreemptPriorityBits = ((7UL - PriorityGroupTmp) > (uint32_t)(__NVIC_PRIO_BITS)) ? (uint32_t)(__NVIC_PRIO_BITS) : (uint32_t)(7UL - PriorityGroupTmp);
+  SubPriorityBits     = ((PriorityGroupTmp + (uint32_t)(__NVIC_PRIO_BITS)) < (uint32_t)7UL) ? (uint32_t)0UL : (uint32_t)((PriorityGroupTmp - 7UL) + (uint32_t)(__NVIC_PRIO_BITS));
+
+  *pPreemptPriority = (Priority >> SubPriorityBits) & (uint32_t)((1UL << (PreemptPriorityBits)) - 1UL);
+  *pSubPriority     = (Priority                   ) & (uint32_t)((1UL << (SubPriorityBits    )) - 1UL);
+}
+
+
+
+/**
   \brief   Set Interrupt Vector
   \details Sets an interrupt vector in SRAM based interrupt vector table.
            The interrupt number can be positive to specify a device specific interrupt,
@@ -768,8 +831,9 @@ __STATIC_INLINE uint32_t __NVIC_GetPriority(IRQn_Type IRQn)
  */
 __STATIC_INLINE void __NVIC_SetVector(IRQn_Type IRQn, uint32_t vector)
 {
-  uint32_t *vectors = (uint32_t *)0x0U;
-  vectors[(int32_t)IRQn + NVIC_USER_IRQ_OFFSET] = vector;
+  uint32_t *vectors = (uint32_t *)(NVIC_USER_IRQ_OFFSET << 2);      /* point to 1st user interrupt */
+  *(vectors + (int32_t)IRQn) = vector;                              /* use pointer arithmetic to access vector */
+  /* ARM Application Note 321 states that the M0 does not require the architectural barrier */
 }
 
 
@@ -783,8 +847,8 @@ __STATIC_INLINE void __NVIC_SetVector(IRQn_Type IRQn, uint32_t vector)
  */
 __STATIC_INLINE uint32_t __NVIC_GetVector(IRQn_Type IRQn)
 {
-  uint32_t *vectors = (uint32_t *)0x0U;
-  return vectors[(int32_t)IRQn + NVIC_USER_IRQ_OFFSET];
+  uint32_t *vectors = (uint32_t *)(NVIC_USER_IRQ_OFFSET << 2);      /* point to 1st user interrupt */
+  return *(vectors + (int32_t)IRQn);                                /* use pointer arithmetic to access vector */
 }
 
 
@@ -792,7 +856,7 @@ __STATIC_INLINE uint32_t __NVIC_GetVector(IRQn_Type IRQn)
   \brief   System Reset
   \details Initiates a system reset request to reset the MCU.
  */
-__STATIC_INLINE void __NVIC_SystemReset(void)
+__NO_RETURN __STATIC_INLINE void __NVIC_SystemReset(void)
 {
   __DSB();                                                          /* Ensure all outstanding memory accesses included
                                                                        buffered write are completed before reset */