mirror of
https://github.com/FreeRTOS/FreeRTOS-Kernel.git
synced 2025-04-19 21:11:57 -04:00
Migrated RL78/IAR port to EWRL78v3+ (#461)
Co-authored-by: Cobus van Eeden <35851496+cobusve@users.noreply.github.com>
This commit is contained in:
Felipe Torrezan
GitHub
parent
840214dc29
commit
4539e1c574
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@ -1,84 +0,0 @@
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;/*
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; * FreeRTOS Kernel <DEVELOPMENT BRANCH>
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; * Copyright (C) 2021 Amazon.com, Inc. or its affiliates. All Rights Reserved.
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; *
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; * SPDX-License-Identifier: MIT
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; *
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; * Permission is hereby granted, free of charge, to any person obtaining a copy of
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; * this software and associated documentation files (the "Software"), to deal in
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; * the Software without restriction, including without limitation the rights to
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; * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
|
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||||||
; * the Software, and to permit persons to whom the Software is furnished to do so,
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||||||
; * subject to the following conditions:
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||||||
; *
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; * The above copyright notice and this permission notice shall be included in all
|
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||||||
; * copies or substantial portions of the Software.
|
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||||||
; *
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; * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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||||||
; * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
|
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||||||
; * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
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||||||
; * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
|
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||||||
; * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
|
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||||||
; * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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; *
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; * https://www.FreeRTOS.org
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; * https://github.com/FreeRTOS
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; *
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; */
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#include "FreeRTOSConfig.h"
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; Variables used by scheduler
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;------------------------------------------------------------------------------
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EXTERN pxCurrentTCB
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EXTERN usCriticalNesting
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;------------------------------------------------------------------------------
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; portSAVE_CONTEXT MACRO
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; Saves the context of the general purpose registers, CS and ES (only in far
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; memory mode) registers the usCriticalNesting Value and the Stack Pointer
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; of the active Task onto the task stack
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;------------------------------------------------------------------------------
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portSAVE_CONTEXT MACRO
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PUSH AX ; Save AX Register to stack.
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PUSH HL
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MOV A, CS ; Save CS register.
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XCH A, X
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MOV A, ES ; Save ES register.
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PUSH AX
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PUSH DE ; Save the remaining general purpose registers.
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PUSH BC
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MOVW AX, usCriticalNesting ; Save the usCriticalNesting value.
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PUSH AX
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MOVW AX, pxCurrentTCB ; Save the Stack pointer.
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MOVW HL, AX
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MOVW AX, SP
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MOVW [HL], AX
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ENDM
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;------------------------------------------------------------------------------
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;------------------------------------------------------------------------------
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; portRESTORE_CONTEXT MACRO
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; Restores the task Stack Pointer then use this to restore usCriticalNesting,
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; general purpose registers and the CS and ES (only in far memory mode)
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; of the selected task from the task stack
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;------------------------------------------------------------------------------
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portRESTORE_CONTEXT MACRO
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MOVW AX, pxCurrentTCB ; Restore the Stack pointer.
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MOVW HL, AX
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MOVW AX, [HL]
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MOVW SP, AX
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POP AX ; Restore usCriticalNesting value.
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MOVW usCriticalNesting, AX
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POP BC ; Restore the necessary general purpose registers.
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POP DE
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POP AX ; Restore the ES register.
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MOV ES, A
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XCH A, X ; Restore the CS register.
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MOV CS, A
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POP HL ; Restore general purpose register HL.
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POP AX ; Restore AX.
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ENDM
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;------------------------------------------------------------------------------
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@ -65,21 +65,13 @@ volatile uint16_t usCriticalNesting = portINITIAL_CRITICAL_NESTING;
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/*-----------------------------------------------------------*/
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/*-----------------------------------------------------------*/
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/*
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/*
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* Sets up the periodic ISR used for the RTOS tick using the interval timer.
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* Sets up the periodic ISR used for the RTOS tick.
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* The application writer can define configSETUP_TICK_INTERRUPT() (in
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* FreeRTOSConfig.h) such that their own tick interrupt configuration is used
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* in place of prvSetupTimerInterrupt().
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*/
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*/
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static void prvSetupTimerInterrupt( void );
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extern void vApplicationSetupTimerInterrupt( void );
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#ifndef configSETUP_TICK_INTERRUPT
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/* The user has not provided their own tick interrupt configuration so use
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the definition in this file (which uses the interval timer). */
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#define configSETUP_TICK_INTERRUPT() prvSetupTimerInterrupt()
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#endif /* configSETUP_TICK_INTERRUPT */
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/*
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/*
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* Defined in portasm.s87, this function starts the scheduler by loading the
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* Starts the scheduler by loading the context of the first Task to run.
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* context of the first task to run.
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* (implemented in portasm.s).
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*/
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*/
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extern void vPortStartFirstTask( void );
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extern void vPortStartFirstTask( void );
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@ -106,28 +98,26 @@ uint32_t *pulLocal;
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#if __DATA_MODEL__ == __DATA_MODEL_FAR__
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#if __DATA_MODEL__ == __DATA_MODEL_FAR__
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{
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{
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/* Parameters are passed in on the stack, and written using a 32-bit value
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/* Far pointer parameters are passed using the A:DE registers (24-bit).
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hence a space is left for the second two bytes. */
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Although they are stored in memory as a 32-bit value. Hence decrement
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the stack pointer, so 2 bytes are left for the contents of A, before
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storing the pvParameters value. */
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pxTopOfStack--;
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pxTopOfStack--;
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/* Write in the parameter value. */
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pulLocal = ( uint32_t * ) pxTopOfStack;
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pulLocal = ( uint32_t * ) pxTopOfStack;
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*pulLocal = ( uint32_t ) pvParameters;
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*pulLocal = ( uint32_t ) pvParameters;
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pxTopOfStack--;
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pxTopOfStack--;
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/* The return address, leaving space for the first two bytes of the
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/* The return address is a 32-bit value. So decrement the stack pointer
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32-bit value. See the comments above the prvTaskExitError() prototype
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in order to make extra room needed to store the correct value. See the
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at the top of this file. */
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comments above the prvTaskExitError() prototype at the top of this file. */
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pxTopOfStack--;
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pxTopOfStack--;
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pulLocal = ( uint32_t * ) pxTopOfStack;
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pulLocal = ( uint32_t * ) pxTopOfStack;
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*pulLocal = ( uint32_t ) prvTaskExitError;
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*pulLocal = ( uint32_t ) prvTaskExitError;
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pxTopOfStack--;
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pxTopOfStack--;
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/* The start address / PSW value is also written in as a 32-bit value,
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/* The task function start address combined with the PSW is also stored
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so leave a space for the second two bytes. */
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as a 32-bit value. So leave a space for the second two bytes. */
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pxTopOfStack--;
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pxTopOfStack--;
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/* Task function start address combined with the PSW. */
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pulLocal = ( uint32_t * ) pxTopOfStack;
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pulLocal = ( uint32_t * ) pxTopOfStack;
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*pulLocal = ( ( ( uint32_t ) pxCode ) | ( portPSW << 24UL ) );
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*pulLocal = ( ( ( uint32_t ) pxCode ) | ( portPSW << 24UL ) );
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pxTopOfStack--;
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pxTopOfStack--;
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@ -179,8 +169,8 @@ uint32_t *pulLocal;
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first starts. */
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first starts. */
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*pxTopOfStack = ( StackType_t ) portNO_CRITICAL_SECTION_NESTING;
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*pxTopOfStack = ( StackType_t ) portNO_CRITICAL_SECTION_NESTING;
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/* Return a pointer to the top of the stack that has been generated so it
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/* Return a pointer to the top of the stack that has been generated so
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can be stored in the task control block for the task. */
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it can be stored in the task control block for the task. */
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return pxTopOfStack;
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return pxTopOfStack;
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}
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}
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/*-----------------------------------------------------------*/
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/*-----------------------------------------------------------*/
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@ -203,18 +193,12 @@ BaseType_t xPortStartScheduler( void )
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{
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{
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/* Setup the hardware to generate the tick. Interrupts are disabled when
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/* Setup the hardware to generate the tick. Interrupts are disabled when
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this function is called. */
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this function is called. */
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configSETUP_TICK_INTERRUPT();
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vApplicationSetupTimerInterrupt();
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/* Restore the context of the first task that is going to run. */
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/* Restore the context of the first task that is going to run. */
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vPortStartFirstTask();
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vPortStartFirstTask();
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/* Execution should not reach here as the tasks are now running!
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/* Execution should not reach here as the tasks are now running! */
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prvSetupTimerInterrupt() is called here to prevent the compiler outputting
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a warning about a statically declared function not being referenced in the
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case that the application writer has provided their own tick interrupt
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configuration routine (and defined configSETUP_TICK_INTERRUPT() such that
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their own routine will be called in place of prvSetupTimerInterrupt()). */
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prvSetupTimerInterrupt();
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return pdTRUE;
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return pdTRUE;
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}
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}
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/*-----------------------------------------------------------*/
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/*-----------------------------------------------------------*/
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@ -224,58 +208,3 @@ void vPortEndScheduler( void )
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/* It is unlikely that the RL78 port will get stopped. */
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/* It is unlikely that the RL78 port will get stopped. */
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}
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}
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/*-----------------------------------------------------------*/
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/*-----------------------------------------------------------*/
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static void prvSetupTimerInterrupt( void )
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{
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const uint16_t usClockHz = 15000UL; /* Internal clock. */
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const uint16_t usCompareMatch = ( usClockHz / configTICK_RATE_HZ ) + 1UL;
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/* Use the internal 15K clock. */
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OSMC = ( uint8_t ) 0x16;
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#ifdef RTCEN
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{
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/* Supply the interval timer clock. */
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RTCEN = ( uint8_t ) 1U;
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/* Disable INTIT interrupt. */
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ITMK = ( uint8_t ) 1;
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/* Disable ITMC operation. */
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ITMC = ( uint8_t ) 0x0000;
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/* Clear INIT interrupt. */
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ITIF = ( uint8_t ) 0;
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/* Set interval and enable interrupt operation. */
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ITMC = usCompareMatch | 0x8000U;
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/* Enable INTIT interrupt. */
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ITMK = ( uint8_t ) 0;
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}
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#endif
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#ifdef TMKAEN
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{
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/* Supply the interval timer clock. */
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TMKAEN = ( uint8_t ) 1U;
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/* Disable INTIT interrupt. */
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TMKAMK = ( uint8_t ) 1;
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/* Disable ITMC operation. */
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ITMC = ( uint8_t ) 0x0000;
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/* Clear INIT interrupt. */
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TMKAIF = ( uint8_t ) 0;
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/* Set interval and enable interrupt operation. */
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ITMC = usCompareMatch | 0x8000U;
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/* Enable INTIT interrupt. */
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TMKAMK = ( uint8_t ) 0;
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}
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#endif
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}
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/*-----------------------------------------------------------*/
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84
portable/IAR/RL78/portasm.s
Normal file
84
portable/IAR/RL78/portasm.s
Normal file
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@ -0,0 +1,84 @@
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;/*
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; * FreeRTOS Kernel <DEVELOPMENT BRANCH>
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||||||
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; * Copyright (C) 2021 Amazon.com, Inc. or its affiliates. All Rights Reserved.
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||||||
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; *
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; * SPDX-License-Identifier: MIT
|
||||||
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; *
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; * Permission is hereby granted, free of charge, to any person obtaining a copy of
|
||||||
|
; * this software and associated documentation files (the "Software"), to deal in
|
||||||
|
; * the Software without restriction, including without limitation the rights to
|
||||||
|
; * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
|
||||||
|
; * the Software, and to permit persons to whom the Software is furnished to do so,
|
||||||
|
; * subject to the following conditions:
|
||||||
|
; *
|
||||||
|
; * The above copyright notice and this permission notice shall be included in all
|
||||||
|
; * copies or substantial portions of the Software.
|
||||||
|
; *
|
||||||
|
; * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
||||||
|
; * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
|
||||||
|
; * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
|
||||||
|
; * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
|
||||||
|
; * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
|
||||||
|
; * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
|
||||||
|
; *
|
||||||
|
; * https://www.FreeRTOS.org
|
||||||
|
; * https://github.com/FreeRTOS
|
||||||
|
; *
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||||||
|
; */
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#include "portmacro.h"
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EXTERN _vTaskSwitchContext
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EXTERN _xTaskIncrementTick
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EXTERN _interrupt_vector_table
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PUBLIC _vPortYield
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PUBLIC _vPortStartFirstTask
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PUBLIC _vPortTickISR
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|
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|
#if !defined(__IASMRL78__) || (__VER__ < 310)
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|
#error "This port requires the IAR Assembler for RL78 version 3.10 or later."
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|
#endif
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|
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|
;-------------------------------------------------------------------------------
|
||||||
|
; FreeRTOS yield handler. This is installed as the BRK software interrupt
|
||||||
|
; handler.
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||||||
|
;-------------------------------------------------------------------------------
|
||||||
|
SECTION `.text`:CODE:ROOT(1)
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|
_vPortYield:
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|
portSAVE_CONTEXT ; Save the context of the current task.
|
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|
RCALL (_vTaskSwitchContext) ; Call the scheduler to select the next task.
|
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|
portRESTORE_CONTEXT ; Restore the context of the next task to run.
|
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|
RETB
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|
;-------------------------------------------------------------------------------
|
||||||
|
|
||||||
|
|
||||||
|
;-------------------------------------------------------------------------------
|
||||||
|
; Starts the scheduler by restoring the context of the task that will execute
|
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|
; first.
|
||||||
|
;-------------------------------------------------------------------------------
|
||||||
|
SECTION `.text`:CODE:ROOT(1)
|
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|
_vPortStartFirstTask:
|
||||||
|
portRESTORE_CONTEXT ; Restore the context of whichever task the ...
|
||||||
|
RETI ; An interrupt stack frame is used so the
|
||||||
|
; task is started using a RETI instruction.
|
||||||
|
;-------------------------------------------------------------------------------
|
||||||
|
|
||||||
|
|
||||||
|
;-------------------------------------------------------------------------------
|
||||||
|
; FreeRTOS Timer Tick handler.
|
||||||
|
; This is installed as the interval timer interrupt handler.
|
||||||
|
;-------------------------------------------------------------------------------
|
||||||
|
SECTION `.text`:CODE:ROOT(1)
|
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|
_vPortTickISR:
|
||||||
|
portSAVE_CONTEXT ; Save the context of the current task.
|
||||||
|
RCALL (_xTaskIncrementTick) ; Call the timer tick function.
|
||||||
|
CMPW AX, #0x00
|
||||||
|
SKZ
|
||||||
|
RCALL (_vTaskSwitchContext) ; Call the scheduler to select the next task.
|
||||||
|
portRESTORE_CONTEXT ; Restore the context of the next task to run.
|
||||||
|
RETI
|
||||||
|
;-------------------------------------------------------------------------------
|
||||||
|
|
||||||
|
END
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||||||
|
|
@ -1,84 +0,0 @@
|
||||||
;/*
|
|
||||||
; * FreeRTOS Kernel <DEVELOPMENT BRANCH>
|
|
||||||
; * Copyright (C) 2021 Amazon.com, Inc. or its affiliates. All Rights Reserved.
|
|
||||||
; *
|
|
||||||
; * SPDX-License-Identifier: MIT
|
|
||||||
; *
|
|
||||||
; * Permission is hereby granted, free of charge, to any person obtaining a copy of
|
|
||||||
; * this software and associated documentation files (the "Software"), to deal in
|
|
||||||
; * the Software without restriction, including without limitation the rights to
|
|
||||||
; * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
|
|
||||||
; * the Software, and to permit persons to whom the Software is furnished to do so,
|
|
||||||
; * subject to the following conditions:
|
|
||||||
; *
|
|
||||||
; * The above copyright notice and this permission notice shall be included in all
|
|
||||||
; * copies or substantial portions of the Software.
|
|
||||||
; *
|
|
||||||
; * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
||||||
; * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
|
|
||||||
; * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
|
|
||||||
; * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
|
|
||||||
; * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
|
|
||||||
; * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
|
|
||||||
; *
|
|
||||||
; * https://www.FreeRTOS.org
|
|
||||||
; * https://github.com/FreeRTOS
|
|
||||||
; *
|
|
||||||
; */
|
|
||||||
|
|
||||||
#include "ISR_Support.h"
|
|
||||||
|
|
||||||
#define CS 0xFFFFC
|
|
||||||
#define ES 0xFFFFD
|
|
||||||
|
|
||||||
PUBLIC vPortYield
|
|
||||||
PUBLIC vPortStartFirstTask
|
|
||||||
PUBLIC vPortTickISR
|
|
||||||
|
|
||||||
EXTERN vTaskSwitchContext
|
|
||||||
EXTERN xTaskIncrementTick
|
|
||||||
|
|
||||||
; FreeRTOS yield handler. This is installed as the BRK software interrupt
|
|
||||||
; handler.
|
|
||||||
RSEG CODE:CODE
|
|
||||||
vPortYield:
|
|
||||||
portSAVE_CONTEXT ; Save the context of the current task.
|
|
||||||
call vTaskSwitchContext ; Call the scheduler to select the next task.
|
|
||||||
portRESTORE_CONTEXT ; Restore the context of the next task to run.
|
|
||||||
retb
|
|
||||||
|
|
||||||
|
|
||||||
; Starts the scheduler by restoring the context of the task that will execute
|
|
||||||
; first.
|
|
||||||
RSEG CODE:CODE
|
|
||||||
vPortStartFirstTask:
|
|
||||||
portRESTORE_CONTEXT ; Restore the context of whichever task the ...
|
|
||||||
reti ; An interrupt stack frame is used so the task
|
|
||||||
; is started using a RETI instruction.
|
|
||||||
|
|
||||||
; FreeRTOS tick handler. This is installed as the interval timer interrupt
|
|
||||||
; handler.
|
|
||||||
RSEG CODE:CODE
|
|
||||||
vPortTickISR:
|
|
||||||
|
|
||||||
portSAVE_CONTEXT ; Save the context of the current task.
|
|
||||||
call xTaskIncrementTick ; Call the timer tick function.
|
|
||||||
cmpw ax, #0x00
|
|
||||||
skz
|
|
||||||
call vTaskSwitchContext ; Call the scheduler to select the next task.
|
|
||||||
portRESTORE_CONTEXT ; Restore the context of the next task to run.
|
|
||||||
reti
|
|
||||||
|
|
||||||
|
|
||||||
; Install the interrupt handlers
|
|
||||||
|
|
||||||
COMMON INTVEC:CODE:ROOT(1)
|
|
||||||
ORG configTICK_VECTOR
|
|
||||||
DW vPortTickISR
|
|
||||||
|
|
||||||
COMMON INTVEC:CODE:ROOT(1)
|
|
||||||
ORG 126
|
|
||||||
DW vPortYield
|
|
||||||
|
|
||||||
|
|
||||||
END
|
|
||||||
|
|
@ -29,6 +29,8 @@
|
||||||
#ifndef PORTMACRO_H
|
#ifndef PORTMACRO_H
|
||||||
#define PORTMACRO_H
|
#define PORTMACRO_H
|
||||||
|
|
||||||
|
#ifdef __IAR_SYSTEMS_ICC__
|
||||||
|
|
||||||
#ifdef __cplusplus
|
#ifdef __cplusplus
|
||||||
extern "C" {
|
extern "C" {
|
||||||
#endif
|
#endif
|
||||||
|
|
@ -108,7 +110,7 @@ extern volatile uint16_t usCriticalNesting; \
|
||||||
\
|
\
|
||||||
if( usCriticalNesting > portNO_CRITICAL_SECTION_NESTING ) \
|
if( usCriticalNesting > portNO_CRITICAL_SECTION_NESTING ) \
|
||||||
{ \
|
{ \
|
||||||
/* Decrement the nesting count as we are leaving a critical section. */ \
|
/* Decrement the nesting count when leaving a critical section. */ \
|
||||||
usCriticalNesting--; \
|
usCriticalNesting--; \
|
||||||
\
|
\
|
||||||
/* If the nesting level has reached zero then interrupts should be */ \
|
/* If the nesting level has reached zero then interrupts should be */ \
|
||||||
|
|
@ -122,9 +124,9 @@ extern volatile uint16_t usCriticalNesting; \
|
||||||
/*-----------------------------------------------------------*/
|
/*-----------------------------------------------------------*/
|
||||||
|
|
||||||
/* Task utilities. */
|
/* Task utilities. */
|
||||||
|
#define portNOP() __asm( "NOP" )
|
||||||
#define portYIELD() __asm( "BRK" )
|
#define portYIELD() __asm( "BRK" )
|
||||||
#define portYIELD_FROM_ISR( xHigherPriorityTaskWoken ) do { if( xHigherPriorityTaskWoken ) vTaskSwitchContext(); } while( 0 )
|
#define portYIELD_FROM_ISR( xHigherPriorityTaskWoken ) do { if( xHigherPriorityTaskWoken ) vTaskSwitchContext(); } while( 0 )
|
||||||
#define portNOP() __asm( "NOP" )
|
|
||||||
/*-----------------------------------------------------------*/
|
/*-----------------------------------------------------------*/
|
||||||
|
|
||||||
/* Hardwware specifics. */
|
/* Hardwware specifics. */
|
||||||
|
|
@ -139,7 +141,88 @@ extern volatile uint16_t usCriticalNesting; \
|
||||||
|
|
||||||
#ifdef __cplusplus
|
#ifdef __cplusplus
|
||||||
}
|
}
|
||||||
|
#endif /* __cplusplus */
|
||||||
|
|
||||||
|
#endif /* __IAR_SYSTEMS_ICC__ */
|
||||||
|
|
||||||
|
;//-----------------------------------------------------------------------------
|
||||||
|
;// The macros below are processed for asm sources which include portmacro.h.
|
||||||
|
;//-----------------------------------------------------------------------------
|
||||||
|
#ifdef __IAR_SYSTEMS_ASM__
|
||||||
|
|
||||||
|
;/* Functions and variables used by this file. */
|
||||||
|
;//-----------------------------------------------------------------------------
|
||||||
|
EXTERN _pxCurrentTCB
|
||||||
|
EXTERN _usCriticalNesting
|
||||||
|
|
||||||
|
;/* Macro used to declutter calls, depends on the selected code model. */
|
||||||
|
;//-----------------------------------------------------------------------------
|
||||||
|
#if __CODE_MODEL__ == __CODE_MODEL_FAR__
|
||||||
|
#define RCALL(X) CALL F:X
|
||||||
|
#else
|
||||||
|
#define RCALL(X) CALL X
|
||||||
#endif
|
#endif
|
||||||
|
|
||||||
#endif /* PORTMACRO_H */
|
|
||||||
|
|
||||||
|
;/*-----------------------------------------------------------------------------
|
||||||
|
; * portSAVE_CONTEXT MACRO
|
||||||
|
; * Saves the context of the general purpose registers, CS and ES (only in __far
|
||||||
|
; * memory mode) registers the _usCriticalNesting value and the Stack Pointer
|
||||||
|
; * of the active Task onto the task stack.
|
||||||
|
; *---------------------------------------------------------------------------*/
|
||||||
|
portSAVE_CONTEXT MACRO
|
||||||
|
PUSH AX ; // Save AX Register to stack.
|
||||||
|
PUSH HL
|
||||||
|
#if __CODE_MODEL__ == __CODE_MODEL_FAR__
|
||||||
|
MOV A, CS ; // Save CS register.
|
||||||
|
XCH A, X
|
||||||
|
MOV A, ES ; // Save ES register.
|
||||||
|
PUSH AX
|
||||||
|
#else
|
||||||
|
MOV A, CS ; // Save CS register.
|
||||||
|
PUSH AX
|
||||||
|
#endif
|
||||||
|
PUSH DE ; // Save the remaining general purpose registers.
|
||||||
|
PUSH BC
|
||||||
|
MOVW AX, _usCriticalNesting ; // Save the _usCriticalNesting value.
|
||||||
|
PUSH AX
|
||||||
|
MOVW AX, _pxCurrentTCB ; // Save the Task stack pointer.
|
||||||
|
MOVW HL, AX
|
||||||
|
MOVW AX, SP
|
||||||
|
MOVW [HL], AX
|
||||||
|
ENDM
|
||||||
|
;//-----------------------------------------------------------------------------
|
||||||
|
|
||||||
|
|
||||||
|
;/*-----------------------------------------------------------------------------
|
||||||
|
; * portRESTORE_CONTEXT MACRO
|
||||||
|
; * Restores the task Stack Pointer then use this to restore _usCriticalNesting,
|
||||||
|
; * general purpose registers and the CS and ES (only in __far memory mode)
|
||||||
|
; * of the selected task from the task stack.
|
||||||
|
; *---------------------------------------------------------------------------*/
|
||||||
|
portRESTORE_CONTEXT MACRO
|
||||||
|
MOVW AX, _pxCurrentTCB ; // Restore the Task stack pointer.
|
||||||
|
MOVW HL, AX
|
||||||
|
MOVW AX, [HL]
|
||||||
|
MOVW SP, AX
|
||||||
|
POP AX ; // Restore _usCriticalNesting value.
|
||||||
|
MOVW _usCriticalNesting, AX
|
||||||
|
POP BC ; // Restore the necessary general purpose registers.
|
||||||
|
POP DE
|
||||||
|
#if __CODE_MODEL__ == __CODE_MODEL_FAR__
|
||||||
|
POP AX ; // Restore the ES register.
|
||||||
|
MOV ES, A
|
||||||
|
XCH A, X ; // Restore the CS register.
|
||||||
|
MOV CS, A
|
||||||
|
#else
|
||||||
|
POP AX
|
||||||
|
MOV CS, A ; // Restore CS register.
|
||||||
|
#endif
|
||||||
|
POP HL ; // Restore general purpose register HL.
|
||||||
|
POP AX ; // Restore AX.
|
||||||
|
ENDM
|
||||||
|
;//-----------------------------------------------------------------------------
|
||||||
|
|
||||||
|
#endif /* __IAR_SYSTEMS_ASM__ */
|
||||||
|
|
||||||
|
#endif /* PORTMACRO_H */
|
||||||
|
|
|
||||||
Loading…
Reference in a new issue