Diff: rtx/TARGET_ARM7/HAL_CM.c

Revision:

105:94371fac911d

Parent:

104:07314541bd12

diff -r 07314541bd12 -r 94371fac911d rtx/TARGET_ARM7/HAL_CM.c
--- a/rtx/TARGET_ARM7/HAL_CM.c	Thu Feb 18 10:00:31 2016 +0000
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,161 +0,0 @@
-/*----------------------------------------------------------------------------
- *      RL-ARM - RTX
- *----------------------------------------------------------------------------
- *      Name:    HAL_CM.C
- *      Purpose: Hardware Abstraction Layer for ARM7TDMI
- *      Rev.:    V1.0
- *----------------------------------------------------------------------------
- *
- * 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:
- *  - Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- *  - Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in the
- *    documentation and/or other materials provided with the distribution.
- *  - Neither the name of ARM  nor the names of its contributors may be used
- *    to endorse or promote products derived from this software without
- *    specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL COPYRIGHT HOLDERS AND CONTRIBUTORS BE
- * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
- * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
- * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
- * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
- * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
- * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
- * POSSIBILITY OF SUCH DAMAGE.
- *---------------------------------------------------------------------------*/
-
-#include "rt_TypeDef.h"
-#include "RTX_Conf.h"
-#include "rt_HAL_CM.h"
-
-
-/*----------------------------------------------------------------------------
- *      Global Variables
- *---------------------------------------------------------------------------*/
-
-#ifdef DBG_MSG
-BIT dbg_msg;
-#endif
-
-/*----------------------------------------------------------------------------
- *      Functions
- *---------------------------------------------------------------------------*/
-
-
-/*--------------------------- rt_init_stack ---------------------------------*/
-
-void rt_init_stack (P_TCB p_TCB, FUNCP task_body) {
-  /* Prepare TCB and saved context for a first time start of a task. */
-  U32 *stk,i,size;
-
-  /* Prepare a complete interrupt frame for first task start */
-  size = p_TCB->priv_stack >> 2;
-
-  /* Write to the top of stack. */
-  stk = &p_TCB->stack[size];
-
-  /* Auto correct to 8-byte ARM stack alignment. */
-  if ((U32)stk & 0x04) {
-    stk--;
-  }
-
-  stk -= 16;
-
-  /* Default xPSR and initial PC */
-  stk[15] = (U32)task_body + 4; /* add 4 byte offset because SUB PC, LR - 4 */
-  stk[0] = INITIAL_xPSR;
-
-  /* Clear R0-R13/LR registers. */
-  for (i = 1; i < 14; i++) {
-    stk[i] = 0;
-  }
-
-  /* Assign a void pointer to R0. */
-  stk[TCB_STACK_R0_OFFSET_DWORDS] = (U32)p_TCB->msg;
-
-  /* Initial Task stack pointer. */
-  p_TCB->tsk_stack = (U32)stk;
-
-  /* Task entry point. */
-  p_TCB->ptask = task_body;
-
-  /* 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
-   heap, therefore the last word of the stack is a moving target.
-   We want to do stack/heap collision detection instead.
-  */
-  if (p_TCB->task_id != 0x01)
-      p_TCB->stack[0] = MAGIC_WORD;
-}
-
-
-/*--------------------------- rt_ret_val ----------------------------------*/
-
-static __inline U32 *rt_ret_regs (P_TCB p_TCB) {
-  /* Get pointer to task return value registers (R0..R3) in Stack */
-
-  /* Stack Frame: CPSR,R0-R13,PC */
-  return (U32 *)(p_TCB->tsk_stack + TCB_STACK_R0_OFFSET_BYTES);
-}
-
-void rt_ret_val (P_TCB p_TCB, U32 v0) {
-  U32 *ret;
-
-  ret = rt_ret_regs(p_TCB);
-  ret[0] = v0;
-}
-
-void rt_ret_val2(P_TCB p_TCB, U32 v0, U32 v1) {
-  U32 *ret;
-
-  ret = rt_ret_regs(p_TCB);
-  ret[0] = v0;
-  ret[1] = v1;
-}
-
-
-/*--------------------------- dbg_init --------------------------------------*/
-
-#ifdef DBG_MSG
-void dbg_init (void) {
-  if ((DEMCR & DEMCR_TRCENA)     &&
-      (ITM_CONTROL & ITM_ITMENA) &&
-      (ITM_ENABLE & (1UL << 31))) {
-    dbg_msg = __TRUE;
-  }
-}
-#endif
-
-/*--------------------------- dbg_task_notify -------------------------------*/
-
-#ifdef DBG_MSG
-void dbg_task_notify (P_TCB p_tcb, BOOL create) {
-  while (ITM_PORT31_U32 == 0);
-  ITM_PORT31_U32 = (U32)p_tcb->ptask;
-  while (ITM_PORT31_U32 == 0);
-  ITM_PORT31_U16 = (create << 8) | p_tcb->task_id;
-}
-#endif
-
-/*--------------------------- dbg_task_switch -------------------------------*/
-
-#ifdef DBG_MSG
-void dbg_task_switch (U32 task_id) {
-  while (ITM_PORT31_U32 == 0);
-  ITM_PORT31_U8 = task_id;
-}
-#endif
-
-
-/*----------------------------------------------------------------------------
- * end of file
- *---------------------------------------------------------------------------*/
-