Yasushi TAUCHI / Mbed 2 deprecated giken9_HTMLServer_Sample

ソースの整理中ですが、利用はできます。

Dependencies:   EthernetInterface HttpServer TextLCD mbed-rpc mbed-rtos mbed Socket lwip-eth lwip-sys lwip

mbed-rtos/rtx/HAL_CM.c@2:14b689a85306, 2014-03-12 (annotated)

Committer:
yueee_yt
Date:
Wed Mar 12 04:39:15 2014 +0000
Revision:
2:14b689a85306
Parent:
0:7766f6712673 
bug fix

Who changed what in which revision?

UserRevisionLine numberNew contents of line
yueee_yt 0:7766f6712673 1 /*----------------------------------------------------------------------------
yueee_yt 0:7766f6712673 2 * RL-ARM - RTX
yueee_yt 0:7766f6712673 3 *----------------------------------------------------------------------------
yueee_yt 0:7766f6712673 4 * Name: HAL_CM.C
yueee_yt 0:7766f6712673 5 * Purpose: Hardware Abstraction Layer for Cortex-M
yueee_yt 0:7766f6712673 6 * Rev.: V4.60
yueee_yt 0:7766f6712673 7 *----------------------------------------------------------------------------
yueee_yt 0:7766f6712673 8 *
yueee_yt 0:7766f6712673 9 * Copyright (c) 1999-2009 KEIL, 2009-2012 ARM Germany GmbH
yueee_yt 0:7766f6712673 10 * All rights reserved.
yueee_yt 0:7766f6712673 11 * Redistribution and use in source and binary forms, with or without
yueee_yt 0:7766f6712673 12 * modification, are permitted provided that the following conditions are met:
yueee_yt 0:7766f6712673 13 * - Redistributions of source code must retain the above copyright
yueee_yt 0:7766f6712673 14 * notice, this list of conditions and the following disclaimer.
yueee_yt 0:7766f6712673 15 * - Redistributions in binary form must reproduce the above copyright
yueee_yt 0:7766f6712673 16 * notice, this list of conditions and the following disclaimer in the
yueee_yt 0:7766f6712673 17 * documentation and/or other materials provided with the distribution.
yueee_yt 0:7766f6712673 18 * - Neither the name of ARM nor the names of its contributors may be used
yueee_yt 0:7766f6712673 19 * to endorse or promote products derived from this software without
yueee_yt 0:7766f6712673 20 * specific prior written permission.
yueee_yt 0:7766f6712673 21 *
yueee_yt 0:7766f6712673 22 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
yueee_yt 0:7766f6712673 23 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
yueee_yt 0:7766f6712673 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
yueee_yt 0:7766f6712673 25 * ARE DISCLAIMED. IN NO EVENT SHALL COPYRIGHT HOLDERS AND CONTRIBUTORS BE
yueee_yt 0:7766f6712673 26 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
yueee_yt 0:7766f6712673 27 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
yueee_yt 0:7766f6712673 28 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
yueee_yt 0:7766f6712673 29 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
yueee_yt 0:7766f6712673 30 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
yueee_yt 0:7766f6712673 31 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
yueee_yt 0:7766f6712673 32 * POSSIBILITY OF SUCH DAMAGE.
yueee_yt 0:7766f6712673 33 *---------------------------------------------------------------------------*/
yueee_yt 0:7766f6712673 34
yueee_yt 0:7766f6712673 35 #include "rt_TypeDef.h"
yueee_yt 0:7766f6712673 36 #include "RTX_Conf.h"
yueee_yt 0:7766f6712673 37 #include "rt_HAL_CM.h"
yueee_yt 0:7766f6712673 38
yueee_yt 0:7766f6712673 39
yueee_yt 0:7766f6712673 40 /*----------------------------------------------------------------------------
yueee_yt 0:7766f6712673 41 * Global Variables
yueee_yt 0:7766f6712673 42 *---------------------------------------------------------------------------*/
yueee_yt 0:7766f6712673 43
yueee_yt 0:7766f6712673 44 #ifdef DBG_MSG
yueee_yt 0:7766f6712673 45 BIT dbg_msg;
yueee_yt 0:7766f6712673 46 #endif
yueee_yt 0:7766f6712673 47
yueee_yt 0:7766f6712673 48 /*----------------------------------------------------------------------------
yueee_yt 0:7766f6712673 49 * Functions
yueee_yt 0:7766f6712673 50 *---------------------------------------------------------------------------*/
yueee_yt 0:7766f6712673 51
yueee_yt 0:7766f6712673 52
yueee_yt 0:7766f6712673 53 /*--------------------------- rt_init_stack ---------------------------------*/
yueee_yt 0:7766f6712673 54
yueee_yt 0:7766f6712673 55 void rt_init_stack (P_TCB p_TCB, FUNCP task_body) {
yueee_yt 0:7766f6712673 56 /* Prepare TCB and saved context for a first time start of a task. */
yueee_yt 0:7766f6712673 57 U32 *stk,i,size;
yueee_yt 0:7766f6712673 58
yueee_yt 0:7766f6712673 59 /* Prepare a complete interrupt frame for first task start */
yueee_yt 0:7766f6712673 60 size = p_TCB->priv_stack >> 2;
yueee_yt 0:7766f6712673 61
yueee_yt 0:7766f6712673 62 /* Write to the top of stack. */
yueee_yt 0:7766f6712673 63 stk = &p_TCB->stack[size];
yueee_yt 0:7766f6712673 64
yueee_yt 0:7766f6712673 65 /* Auto correct to 8-byte ARM stack alignment. */
yueee_yt 0:7766f6712673 66 if ((U32)stk & 0x04) {
yueee_yt 0:7766f6712673 67 stk--;
yueee_yt 0:7766f6712673 68 }
yueee_yt 0:7766f6712673 69
yueee_yt 0:7766f6712673 70 stk -= 16;
yueee_yt 0:7766f6712673 71
yueee_yt 0:7766f6712673 72 /* Default xPSR and initial PC */
yueee_yt 0:7766f6712673 73 stk[15] = INITIAL_xPSR;
yueee_yt 0:7766f6712673 74 stk[14] = (U32)task_body;
yueee_yt 0:7766f6712673 75
yueee_yt 0:7766f6712673 76 /* Clear R4-R11,R0-R3,R12,LR registers. */
yueee_yt 0:7766f6712673 77 for (i = 0; i < 14; i++) {
yueee_yt 0:7766f6712673 78 stk[i] = 0;
yueee_yt 0:7766f6712673 79 }
yueee_yt 0:7766f6712673 80
yueee_yt 0:7766f6712673 81 /* Assign a void pointer to R0. */
yueee_yt 0:7766f6712673 82 stk[8] = (U32)p_TCB->msg;
yueee_yt 0:7766f6712673 83
yueee_yt 0:7766f6712673 84 /* Initial Task stack pointer. */
yueee_yt 0:7766f6712673 85 p_TCB->tsk_stack = (U32)stk;
yueee_yt 0:7766f6712673 86
yueee_yt 0:7766f6712673 87 /* Task entry point. */
yueee_yt 0:7766f6712673 88 p_TCB->ptask = task_body;
yueee_yt 0:7766f6712673 89
yueee_yt 0:7766f6712673 90 /* Set a magic word for checking of stack overflow.
yueee_yt 0:7766f6712673 91 For the main thread (ID: 0x01) the stack is in a memory area shared with the
yueee_yt 0:7766f6712673 92 heap, therefore the last word of the stack is a moving target.
yueee_yt 0:7766f6712673 93 We want to do stack/heap collision detection instead.
yueee_yt 0:7766f6712673 94 */
yueee_yt 0:7766f6712673 95 if (p_TCB->task_id != 0x01)
yueee_yt 0:7766f6712673 96 p_TCB->stack[0] = MAGIC_WORD;
yueee_yt 0:7766f6712673 97 }
yueee_yt 0:7766f6712673 98
yueee_yt 0:7766f6712673 99
yueee_yt 0:7766f6712673 100 /*--------------------------- rt_ret_val ----------------------------------*/
yueee_yt 0:7766f6712673 101
yueee_yt 0:7766f6712673 102 static __inline U32 *rt_ret_regs (P_TCB p_TCB) {
yueee_yt 0:7766f6712673 103 /* Get pointer to task return value registers (R0..R3) in Stack */
yueee_yt 0:7766f6712673 104 #if (__TARGET_FPU_VFP)
yueee_yt 0:7766f6712673 105 if (p_TCB->stack_frame) {
yueee_yt 0:7766f6712673 106 /* Extended Stack Frame: R4-R11,S16-S31,R0-R3,R12,LR,PC,xPSR,S0-S15,FPSCR */
yueee_yt 0:7766f6712673 107 return (U32 *)(p_TCB->tsk_stack + 8*4 + 16*4);
yueee_yt 0:7766f6712673 108 } else {
yueee_yt 0:7766f6712673 109 /* Basic Stack Frame: R4-R11,R0-R3,R12,LR,PC,xPSR */
yueee_yt 0:7766f6712673 110 return (U32 *)(p_TCB->tsk_stack + 8*4);
yueee_yt 0:7766f6712673 111 }
yueee_yt 0:7766f6712673 112 #else
yueee_yt 0:7766f6712673 113 /* Stack Frame: R4-R11,R0-R3,R12,LR,PC,xPSR */
yueee_yt 0:7766f6712673 114 return (U32 *)(p_TCB->tsk_stack + 8*4);
yueee_yt 0:7766f6712673 115 #endif
yueee_yt 0:7766f6712673 116 }
yueee_yt 0:7766f6712673 117
yueee_yt 0:7766f6712673 118 void rt_ret_val (P_TCB p_TCB, U32 v0) {
yueee_yt 0:7766f6712673 119 U32 *ret;
yueee_yt 0:7766f6712673 120
yueee_yt 0:7766f6712673 121 ret = rt_ret_regs(p_TCB);
yueee_yt 0:7766f6712673 122 ret[0] = v0;
yueee_yt 0:7766f6712673 123 }
yueee_yt 0:7766f6712673 124
yueee_yt 0:7766f6712673 125 void rt_ret_val2(P_TCB p_TCB, U32 v0, U32 v1) {
yueee_yt 0:7766f6712673 126 U32 *ret;
yueee_yt 0:7766f6712673 127
yueee_yt 0:7766f6712673 128 ret = rt_ret_regs(p_TCB);
yueee_yt 0:7766f6712673 129 ret[0] = v0;
yueee_yt 0:7766f6712673 130 ret[1] = v1;
yueee_yt 0:7766f6712673 131 }
yueee_yt 0:7766f6712673 132
yueee_yt 0:7766f6712673 133
yueee_yt 0:7766f6712673 134 /*--------------------------- dbg_init --------------------------------------*/
yueee_yt 0:7766f6712673 135
yueee_yt 0:7766f6712673 136 #ifdef DBG_MSG
yueee_yt 0:7766f6712673 137 void dbg_init (void) {
yueee_yt 0:7766f6712673 138 if ((DEMCR & DEMCR_TRCENA) &&
yueee_yt 0:7766f6712673 139 (ITM_CONTROL & ITM_ITMENA) &&
yueee_yt 0:7766f6712673 140 (ITM_ENABLE & (1UL << 31))) {
yueee_yt 0:7766f6712673 141 dbg_msg = __TRUE;
yueee_yt 0:7766f6712673 142 }
yueee_yt 0:7766f6712673 143 }
yueee_yt 0:7766f6712673 144 #endif
yueee_yt 0:7766f6712673 145
yueee_yt 0:7766f6712673 146 /*--------------------------- dbg_task_notify -------------------------------*/
yueee_yt 0:7766f6712673 147
yueee_yt 0:7766f6712673 148 #ifdef DBG_MSG
yueee_yt 0:7766f6712673 149 void dbg_task_notify (P_TCB p_tcb, BOOL create) {
yueee_yt 0:7766f6712673 150 while (ITM_PORT31_U32 == 0);
yueee_yt 0:7766f6712673 151 ITM_PORT31_U32 = (U32)p_tcb->ptask;
yueee_yt 0:7766f6712673 152 while (ITM_PORT31_U32 == 0);
yueee_yt 0:7766f6712673 153 ITM_PORT31_U16 = (create << 8) | p_tcb->task_id;
yueee_yt 0:7766f6712673 154 }
yueee_yt 0:7766f6712673 155 #endif
yueee_yt 0:7766f6712673 156
yueee_yt 0:7766f6712673 157 /*--------------------------- dbg_task_switch -------------------------------*/
yueee_yt 0:7766f6712673 158
yueee_yt 0:7766f6712673 159 #ifdef DBG_MSG
yueee_yt 0:7766f6712673 160 void dbg_task_switch (U32 task_id) {
yueee_yt 0:7766f6712673 161 while (ITM_PORT31_U32 == 0);
yueee_yt 0:7766f6712673 162 ITM_PORT31_U8 = task_id;
yueee_yt 0:7766f6712673 163 }
yueee_yt 0:7766f6712673 164 #endif
yueee_yt 0:7766f6712673 165
yueee_yt 0:7766f6712673 166
yueee_yt 0:7766f6712673 167 /*----------------------------------------------------------------------------
yueee_yt 0:7766f6712673 168 * end of file
yueee_yt 0:7766f6712673 169 *---------------------------------------------------------------------------*/
yueee_yt 0:7766f6712673 170