/*    FreeRTOS V4.1.1 - Copyright (C) 2003-2006 Richard Barry.    MCF5235 Port - Copyright (C) 2006 Christian Walter.    This file is part of the FreeRTOS distribution.    FreeRTOS is free software; you can redistribute it and/or modify    it under the terms of the GNU General Public License as published by    the Free Software Foundation; either version 2 of the License, or    (at your option) any later version.    FreeRTOS is distributed in the hope that it will be useful,    but WITHOUT ANY WARRANTY; without even the implied warranty of    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the    GNU General Public License for more details.    You should have received a copy of the GNU General Public License    along with FreeRTOS; if not, write to the Free Software    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA    A special exception to the GPL can be applied should you wish to distribute    a combined work that includes FreeRTOS, without being obliged to provide    the source code for any proprietary components.  See the licensing section    of http://www.FreeRTOS.org for full details of how and when the exception    can be applied.    ***************************************************************************    See http://www.FreeRTOS.org for documentation, latest information, license    and contact details.  Please ensure to read the configuration and relevant    port sections of the online documentation.    ****************************************************************************/#ifndef PORTMACRO_H#define PORTMACRO_H/* ------------------------ Data types for Coldfire ----------------------- */#define portCHAR        char#define portFLOAT       float#define portDOUBLE      double#define portLONG        long#define portSHORT       short#define portSTACK_TYPE  unsigned int#define portBASE_TYPE   int#if( USE_16_BIT_TICKS == 1 )    typedef unsigned portSHORT portTickType;    #define portMAX_DELAY ( portTickType ) 0xffff#else    typedef unsigned portLONG portTickType;    #define portMAX_DELAY ( portTickType ) 0xffffffff#endif/* ------------------------ Architecture specifics ------------------------ */#define portSTACK_GROWTH                ( -1 )#define portTICK_RATE_MS                ( ( portTickType ) 1000 / configTICK_RATE_HZ )#define portBYTE_ALIGNMENT              4#define portTRAP_YIELD                  0   /* Trap 0 */#define portIPL_MAX                     7   /* Only NMI interrupt 7 allowed. *//* ------------------------ FreeRTOS macros for port ---------------------- *//* * This function must be called when the current state of the active task * should be stored. It must be called immediately after exception * processing from the CPU, i.e. there exists a Coldfire exception frame at * the current position in the stack. The function reserves space on * the stack for the CPU registers and other task dependent values (e.g * ulCriticalNesting) and updates the top of the stack in the TCB. */#define portSAVE_CONTEXT()                                                   \    asm volatile ( /* reserve space for task state. */                       \                   "lea.l   (-64, %sp), %sp\n\t"                             \                   /* push data register %d0-%d7/%a0-%a6 on stack. */        \                   "movem.l %d0-%d7/%a0-%a6, (%sp)\n\t"                      \                   /* push ulCriticalNesting counter on stack. */            \                   "lea.l  (60, %sp), %a0\n\t"                               \                   "move.l  ulCriticalNesting, (%a0)\n\t"                    \                   /* set the new top of the stack in the TCB. */            \                   "move.l  pxCurrentTCB, %a0\n\t"                           \                   "move.l  %sp, (%a0)");/*. * This function restores the current active and continues its execution. * It loads the current TCB and restores the processor registers, the * task dependent values (e.g ulCriticalNesting). Finally execution * is continued by executing an rte instruction. */#define portRESTORE_CONTEXT()                                                \    asm volatile ( "move.l  pxCurrentTCB, %sp\n\t"                           \                   "move.l  (%sp), %sp\n\t"                                  \                   /* stack pointer now points to the saved registers. */    \                   "movem.l (%sp), %d0-%d7/%a0-%a6\n\t"                      \                   /* restore ulCriticalNesting counter from stack. */       \                   "lea.l   (%sp, 60), %sp\n\t"                              \                   "move.l  (%sp)+, ulCriticalNesting\n\t"                   \                   /* stack pointer now points to exception frame. */        \                   "rte\n\t" );#define portENTER_CRITICAL()                                                 \    vPortEnterCritical();#define portEXIT_CRITICAL()                                                  \    vPortExitCritical();#define portSET_IPL( xIPL )                                                  \    asm_set_ipl( xIPL )#define portDISABLE_INTERRUPTS() \    do { ( void )portSET_IPL( portIPL_MAX ); } while( 0 )#define portENABLE_INTERRUPTS() \    do { ( void )portSET_IPL( 0 ); } while( 0 )#define portYIELD()                                                          \    asm volatile ( " trap   %0\n\t" : : "i"(portTRAP_YIELD) )#define portNOP()                                                            \    asm volatile ( "nop\n\t" )#define portENTER_SWITCHING_ISR()                                            \    asm volatile ( "move.w  #0x2700, %sr" );                                 \    /* Save the context of the interrupted task. */                          \    portSAVE_CONTEXT(  );                                                    \    {#define portEXIT_SWITCHING_ISR( SwitchRequired )                             \        /* If a switch is required we call vTaskSwitchContext(). */          \        if( SwitchRequired )                                                 \        {                                                                    \            vTaskSwitchContext(  );                                          \        }                                                                    \    }                                                                        \    portRESTORE_CONTEXT(  );/* ------------------------ Function prototypes --------------------------- */void vPortEnterCritical( void );void vPortExitCritical( void );int asm_set_ipl( unsigned long int uiNewIPL );/* ------------------------ Compiler specifics ---------------------------- */#define portTASK_FUNCTION_PROTO( vFunction, pvParameters )                   \    void vFunction( void *pvParameters )#define portTASK_FUNCTION( vFunction, pvParameters )                         \    void vFunction( void *pvParameters )#endif