diff options
| -rw-r--r-- | os/ports/GCC/ARMCMx/chcore.h | 25 | ||||
| -rw-r--r-- | readme.txt | 4 |
2 files changed, 25 insertions, 4 deletions
diff --git a/os/ports/GCC/ARMCMx/chcore.h b/os/ports/GCC/ARMCMx/chcore.h index 7ccc59290..c0396c1d5 100644 --- a/os/ports/GCC/ARMCMx/chcore.h +++ b/os/ports/GCC/ARMCMx/chcore.h @@ -128,7 +128,7 @@ * to user in the ARMv6-M port.
*/
#ifndef CORTEX_PRIORITY_SVCALL
-#define CORTEX_PRIORITY_SVCALL (CORTEX_MAXIMUM_PRIORITY + 1)
+#define CORTEX_PRIORITY_SVCALL (CORTEX_MAXIMUM_PRIORITY + 1)
#else
/* If it is externally redefined then better perform a validity check on it.*/
#if !CORTEX_IS_VALID_PRIORITY(CORTEX_PRIORITY_SVCALL)
@@ -146,7 +146,7 @@ * the minimum priority level.
*/
#ifndef CORTEX_PRIORITY_PENDSV
-#define CORTEX_PRIORITY_PENDSV CORTEX_MINIMUM_PRIORITY
+#define CORTEX_PRIORITY_PENDSV CORTEX_MINIMUM_PRIORITY
#else
/* If it is externally redefined then better perform a validity check on it.*/
#if !CORTEX_IS_VALID_PRIORITY(CORTEX_PRIORITY_PENDSV)
@@ -164,6 +164,17 @@ #define CORTEX_BASEPRI_KERNEL CORTEX_PRIORITY_MASK(CORTEX_PRIORITY_SVCALL+1)
#endif
+/**
+ * @brief Stack alignment enforcement.
+ * @note The default value is 64 in order to comply with EABI, reducing
+ * the value to 32 can save some RAM space if you don't care about
+ * binary compatibility with EABI compiled libraries.
+ * @note Allowed values are 32 or 64. + */
+#ifndef CORTEX_STACK_ALIGNMENT
+#define CORTEX_STACK_ALIGNMENT 64
+#endif
+
/*===========================================================================*/
/* Port exported info. */
/*===========================================================================*/
@@ -211,9 +222,15 @@ /*===========================================================================*/
/**
- * @brief 32 bits stack and memory alignment enforcement.
+ * @brief Stack and memory alignment enforcement.
*/
-typedef uint32_t stkalign_t;
+#if (CORTEX_STACK_ALIGNMENT == 64) || defined(__DOXYGEN__)
+typedef uint64_t stkalign_t __attribute__ ((aligned (8)));
+#elif CORTEX_STACK_ALIGNMENT == 32
+typedef uint32_t stkalign_t __attribute__ ((aligned (4)));
+#else
+#error "invalid stack alignment selected"
+#endif
/**
* @brief Generic ARM register.
diff --git a/readme.txt b/readme.txt index 6aabf751e..9e87eba3a 100644 --- a/readme.txt +++ b/readme.txt @@ -58,6 +58,10 @@ *** Releases ***
*****************************************************************************
+*** 2.1.1 ***
+- FIX: Added option to enforce the stack alignment to 32 or 64 bits in the
+ Cortex-Mx port (bug 3025133)(backported to 2.0.2).
+
*** 2.1.0 ***
- FIX: Fixed notification order in input queues (bug 3020708)(backported in
2.0.1).
|