Diff: rtx/TARGET_CORTEX_M/HAL_CM.c

Revision:

112:53ace74b190c

Parent:

49:77c8e4604045

Child:

118:6635230e06ba

--- a/rtx/TARGET_CORTEX_M/HAL_CM.c	Tue May 03 00:15:52 2016 +0100
+++ b/rtx/TARGET_CORTEX_M/HAL_CM.c	Thu May 05 20:45:13 2016 +0100
@@ -1,12 +1,12 @@
 /*----------------------------------------------------------------------------
- *      RL-ARM - RTX
+ *      CMSIS-RTOS  -  RTX
  *----------------------------------------------------------------------------
  *      Name:    HAL_CM.C
  *      Purpose: Hardware Abstraction Layer for Cortex-M
- *      Rev.:    V4.60
+ *      Rev.:    V4.79
  *----------------------------------------------------------------------------
  *
- * Copyright (c) 1999-2009 KEIL, 2009-2012 ARM Germany GmbH
+ * Copyright (c) 1999-2009 KEIL, 2009-2015 ARM Germany GmbH
  * All rights reserved.
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are met:
@@ -33,7 +33,7 @@
  *---------------------------------------------------------------------------*/
 
 #include "rt_TypeDef.h"
-#include "RTX_Conf.h"
+#include "RTX_Config.h"
 #include "rt_HAL_CM.h"
 
 
@@ -58,12 +58,15 @@
 
   /* Prepare a complete interrupt frame for first task start */
   size = p_TCB->priv_stack >> 2;
+  if (size == 0U) {
+    size = (U16)os_stackinfo >> 2;
+  }
 
   /* Write to the top of stack. */
   stk = &p_TCB->stack[size];
 
   /* Auto correct to 8-byte ARM stack alignment. */
-  if ((U32)stk & 0x04) {
+  if ((U32)stk & 0x04U) {
     stk--;
   }
 
@@ -74,8 +77,8 @@
   stk[14] = (U32)task_body;
 
   /* Clear R4-R11,R0-R3,R12,LR registers. */
-  for (i = 0; i < 14; i++) {
-    stk[i] = 0;
+  for (i = 0U; i < 14U; i++) {
+    stk[i] = 0U;
   }
 
   /* Assign a void pointer to R0. */
@@ -87,13 +90,49 @@
   /* Task entry point. */
   p_TCB->ptask = task_body;
 
+
+#ifdef __MBED_CMSIS_RTOS_CM
   /* Set a magic word for checking of stack overflow.
-   For the main thread (ID: 0x01) the stack is in a memory area shared with the
+   For the main thread (ID: 0x02) the stack is in a memory area shared with the
    heap, therefore the last word of the stack is a moving target.
    We want to do stack/heap collision detection instead.
+   Similar applies to stack filling for the magic pattern.
   */
-  if (p_TCB->task_id != 0x01)
-      p_TCB->stack[0] = MAGIC_WORD;
+  if (p_TCB->task_id != 0x02) {
+    p_TCB->stack[0] = MAGIC_WORD;
+
+    /* Initialize stack with magic pattern. */
+    if (os_stackinfo & 0x10000000U) {
+      if (size > (16U+1U)) {
+        for (i = ((size - 16U)/2U) - 1U; i; i--) {
+          stk -= 2U;
+          stk[1] = MAGIC_PATTERN;
+          stk[0] = MAGIC_PATTERN;
+        }
+        if (--stk > p_TCB->stack) {
+          *stk = MAGIC_PATTERN;
+        }
+      }
+    }
+  }
+#else
+  /* Initialize stack with magic pattern. */
+  if (os_stackinfo & 0x10000000U) {
+    if (size > (16U+1U)) {
+      for (i = ((size - 16U)/2U) - 1U; i; i--) {
+        stk -= 2U;
+        stk[1] = MAGIC_PATTERN;
+        stk[0] = MAGIC_PATTERN;
+      }
+      if (--stk > p_TCB->stack) {
+        *stk = MAGIC_PATTERN;
+      }
+    }
+  }
+
+  /* Set a magic word for checking of stack overflow. */
+  p_TCB->stack[0] = MAGIC_WORD;
+#endif
 }
 
 
@@ -101,17 +140,17 @@
 
 static __inline U32 *rt_ret_regs (P_TCB p_TCB) {
   /* Get pointer to task return value registers (R0..R3) in Stack */
-#if (__TARGET_FPU_VFP)
+#if defined(__TARGET_FPU_VFP)
   if (p_TCB->stack_frame) {
     /* Extended Stack Frame: R4-R11,S16-S31,R0-R3,R12,LR,PC,xPSR,S0-S15,FPSCR */
-    return (U32 *)(p_TCB->tsk_stack + 8*4 + 16*4);
+    return (U32 *)(p_TCB->tsk_stack + (8U*4U) + (16U*4U));
   } else {
     /* Basic Stack Frame: R4-R11,R0-R3,R12,LR,PC,xPSR */
-    return (U32 *)(p_TCB->tsk_stack + 8*4);
+    return (U32 *)(p_TCB->tsk_stack + (8U*4U));
   }
 #else
   /* Stack Frame: R4-R11,R0-R3,R12,LR,PC,xPSR */
-  return (U32 *)(p_TCB->tsk_stack + 8*4);
+  return (U32 *)(p_TCB->tsk_stack + (8U*4U));
 #endif
 }
 
@@ -135,9 +174,9 @@
 
 #ifdef DBG_MSG
 void dbg_init (void) {
-  if ((DEMCR & DEMCR_TRCENA)     &&
-      (ITM_CONTROL & ITM_ITMENA) &&
-      (ITM_ENABLE & (1UL << 31))) {
+  if (((DEMCR & DEMCR_TRCENA) != 0U)     && 
+      ((ITM_CONTROL & ITM_ITMENA) != 0U) &&
+      ((ITM_ENABLE & (1UL << 31)) != 0U)) {
     dbg_msg = __TRUE;
   }
 }
@@ -147,10 +186,10 @@
 
 #ifdef DBG_MSG
 void dbg_task_notify (P_TCB p_tcb, BOOL create) {
-  while (ITM_PORT31_U32 == 0);
+  while (ITM_PORT31_U32 == 0U);
   ITM_PORT31_U32 = (U32)p_tcb->ptask;
-  while (ITM_PORT31_U32 == 0);
-  ITM_PORT31_U16 = (create << 8) | p_tcb->task_id;
+  while (ITM_PORT31_U32 == 0U);
+  ITM_PORT31_U16 = (U16)((create << 8) | p_tcb->task_id);
 }
 #endif
 
@@ -158,13 +197,11 @@
 
 #ifdef DBG_MSG
 void dbg_task_switch (U32 task_id) {
-  while (ITM_PORT31_U32 == 0);
-  ITM_PORT31_U8 = task_id;
+  while (ITM_PORT31_U32 == 0U);
+  ITM_PORT31_U8 = (U8)task_id;
 }
 #endif
 
-
 /*----------------------------------------------------------------------------
  * end of file
  *---------------------------------------------------------------------------*/
-