Fixed bugs 3226671 and 3226657.

git-svn-id: svn://svn.code.sf.net/p/chibios/svn/trunk@2833 35acf78f-673a-0410-8e92-d51de3d6d3f4

1 files changed, 23 insertions, 2 deletions

diff --git a/os/ports/GCC/ARMCMx/chcore_v6m.h b/os/ports/GCC/ARMCMx/chcore_v6m.h
index 1d3198a7f..0212fe6b3 100644
--- a/os/ports/GCC/ARMCMx/chcore_v6m.h
+++ b/os/ports/GCC/ARMCMx/chcore_v6m.h
@@ -82,7 +82,7 @@ struct intctx {
  *          reduce this value to zero when compiling with optimizations.

  */

 #ifndef IDLE_THREAD_STACK_SIZE

-#define IDLE_THREAD_STACK_SIZE      8

+#define IDLE_THREAD_STACK_SIZE      16

 #endif

 

 /**

@@ -200,11 +200,32 @@ struct intctx {
 #define port_wait_for_interrupt()

 #endif

 

+/**

+ * @brief   Performs a context switch between two threads.

+ * @details This is the most critical code in any port, this function

+ *          is responsible for the context switch between 2 threads.

+ * @note    The implementation of this code affects <b>directly</b> the context

+ *          switch performance so optimize here as much as you can.

+ *

+ * @param[in] ntp       the thread to be switched in

+ * @param[in] otp       the thread to be switched out

+ */

+#if !defined(CH_DBG_ENABLE_STACK_CHECK) || defined(__DOXYGEN__)

+#define port_switch(ntp, otp) _port_switch(ntp, otp)

+#else

+#define port_switch(ntp, otp) {                                             \

+  register struct intctx *r13 asm ("r13");                                  \

+  if ((void *)(r13 - 1) < (void *)(otp + 1))                                \

+    chDbgPanic("stack overflow");                                           \

+  _port_switch(ntp, otp);                                                   \

+}

+#endif

+

 #ifdef __cplusplus

 extern "C" {

 #endif

   void port_halt(void);

-  void port_switch(Thread *ntp, Thread *otp);

+  void _port_switch(Thread *ntp, Thread *otp);

   void _port_irq_epilogue(regarm_t lr);

   void _port_switch_from_isr(void);

   void _port_thread_start(void);