From: richardbarry Date: Thu, 23 Oct 2008 11:06:20 +0000 (+0000) Subject: Remove files that use the now defunct Keil compiler. X-Git-Tag: V5.1.2~183 X-Git-Url: https://git.sur5r.net/?a=commitdiff_plain;h=15206e2a57f7855763d045df2e44dec3db93ea27;p=freertos Remove files that use the now defunct Keil compiler. git-svn-id: https://svn.code.sf.net/p/freertos/code/trunk@513 1d2547de-c912-0410-9cb9-b8ca96c0e9e2 --- diff --git a/Source/portable/Keil/ARM7/port.c b/Source/portable/Keil/ARM7/port.c deleted file mode 100644 index 93a246d32..000000000 --- a/Source/portable/Keil/ARM7/port.c +++ /dev/null @@ -1,259 +0,0 @@ -/* - FreeRTOS.org V5.0.4 - Copyright (C) 2003-2008 Richard Barry. - - This file is part of the FreeRTOS.org distribution. - - FreeRTOS.org 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.org 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.org; 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.org, 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. - - *************************************************************************** - *************************************************************************** - * * - * SAVE TIME AND MONEY! We can port FreeRTOS.org to your own hardware, * - * and even write all or part of your application on your behalf. * - * See http://www.OpenRTOS.com for details of the services we provide to * - * expedite your project. * - * * - *************************************************************************** - *************************************************************************** - - Please ensure to read the configuration and relevant port sections of the - online documentation. - - http://www.FreeRTOS.org - Documentation, latest information, license and - contact details. - - http://www.SafeRTOS.com - A version that is certified for use in safety - critical systems. - - http://www.OpenRTOS.com - Commercial support, development, porting, - licensing and training services. -*/ - - -/*----------------------------------------------------------- - * Implementation of functions defined in portable.h for the ARM7 port - * using the Keil compiler. - * - * Components that can be compiled to either ARM or THUMB mode are - * contained in this file. The ISR routines, which can only be compiled - * to ARM mode are contained in portISR.c. - *----------------------------------------------------------*/ - -/* - Changes from V3.2.2 - - + Bug fix - The prescale value for the timer setup is now written to T0PR - instead of T0PC. This bug would have had no effect unless a prescale - value was actually used. -*/ - -/* Standard includes. */ -#include - -/* Scheduler includes. */ -#include "FreeRTOS.h" -#include "task.h" - -/* Constants required to setup the initial task context. */ -#define portINITIAL_SPSR ( ( portSTACK_TYPE ) 0x1f ) /* System mode, ARM mode, interrupts enabled. */ -#define portTHUMB_MODE_BIT ( ( portSTACK_TYPE ) 0x20 ) -#define portINSTRUCTION_SIZE ( ( portSTACK_TYPE ) 4 ) -#define portNO_CRITICAL_SECTION_NESTING ( ( portSTACK_TYPE ) 0 ) - -/* Constants required to setup the tick ISR. */ -#define portENABLE_TIMER ( ( unsigned portCHAR ) 0x01 ) -#define portPRESCALE_VALUE 0x00 -#define portINTERRUPT_ON_MATCH ( ( unsigned portLONG ) 0x01 ) -#define portRESET_COUNT_ON_MATCH ( ( unsigned portLONG ) 0x02 ) - -/* Constants required to setup the VIC for the tick ISR. */ -#define portTIMER_VIC_CHANNEL ( ( unsigned portLONG ) 0x0004 ) -#define portTIMER_VIC_CHANNEL_BIT ( ( unsigned portLONG ) 0x0010 ) -#define portTIMER_VIC_ENABLE ( ( unsigned portLONG ) 0x0020 ) - -/*-----------------------------------------------------------*/ - -/* Setup the timer to generate the tick interrupts. */ -static void prvSetupTimerInterrupt( void ); - -/* - * The scheduler can only be started from ARM mode, so - * vPortISRStartFirstSTask() is defined in portISR.c. - */ -extern void vPortISRStartFirstTask( void ); - -/*-----------------------------------------------------------*/ - -/* - * See header file for description. - */ -portSTACK_TYPE *pxPortInitialiseStack( portSTACK_TYPE *pxTopOfStack, pdTASK_CODE pxCode, void *pvParameters ) -{ -portSTACK_TYPE *pxOriginalTOS; - - /* Setup the initial stack of the task. The stack is set exactly as - expected by the portRESTORE_CONTEXT() macro. - - Remember where the top of the (simulated) stack is before we place - anything on it. */ - pxOriginalTOS = pxTopOfStack; - - /* First on the stack is the return address - which in this case is the - start of the task. The offset is added to make the return address appear - as it would within an IRQ ISR. */ - *pxTopOfStack = ( portSTACK_TYPE ) pxCode + portINSTRUCTION_SIZE; - pxTopOfStack--; - - *pxTopOfStack = ( portSTACK_TYPE ) 0xaaaaaaaa; /* R14 */ - pxTopOfStack--; - *pxTopOfStack = ( portSTACK_TYPE ) pxOriginalTOS; /* Stack used when task starts goes in R13. */ - pxTopOfStack--; - *pxTopOfStack = ( portSTACK_TYPE ) 0x12121212; /* R12 */ - pxTopOfStack--; - *pxTopOfStack = ( portSTACK_TYPE ) 0x11111111; /* R11 */ - pxTopOfStack--; - *pxTopOfStack = ( portSTACK_TYPE ) 0x10101010; /* R10 */ - pxTopOfStack--; - *pxTopOfStack = ( portSTACK_TYPE ) 0x09090909; /* R9 */ - pxTopOfStack--; - *pxTopOfStack = ( portSTACK_TYPE ) 0x08080808; /* R8 */ - pxTopOfStack--; - *pxTopOfStack = ( portSTACK_TYPE ) 0x07070707; /* R7 */ - pxTopOfStack--; - *pxTopOfStack = ( portSTACK_TYPE ) 0x06060606; /* R6 */ - pxTopOfStack--; - *pxTopOfStack = ( portSTACK_TYPE ) 0x05050505; /* R5 */ - pxTopOfStack--; - *pxTopOfStack = ( portSTACK_TYPE ) 0x04040404; /* R4 */ - pxTopOfStack--; - *pxTopOfStack = ( portSTACK_TYPE ) 0x03030303; /* R3 */ - pxTopOfStack--; - *pxTopOfStack = ( portSTACK_TYPE ) 0x02020202; /* R2 */ - pxTopOfStack--; - *pxTopOfStack = ( portSTACK_TYPE ) 0x01010101; /* R1 */ - pxTopOfStack--; - *pxTopOfStack = ( portSTACK_TYPE ) pvParameters; /* R0 */ - pxTopOfStack--; - - /* The last thing onto the stack is the status register, which is set for - system mode, with interrupts enabled. */ - *pxTopOfStack = ( portSTACK_TYPE ) portINITIAL_SPSR; - - #ifdef KEIL_THUMB_INTERWORK - { - /* We want the task to start in thumb mode. */ - *pxTopOfStack |= portTHUMB_MODE_BIT; - } - #endif - - pxTopOfStack--; - - /* The code generated by the Keil compiler does not maintain separate - stack and frame pointers. The portENTER_CRITICAL macro cannot therefore - use the stack as per other ports. Instead a variable is used to keep - track of the critical section nesting. This variable has to be stored - as part of the task context and is initially set to zero. */ - *pxTopOfStack = portNO_CRITICAL_SECTION_NESTING; - - return pxTopOfStack; -} -/*-----------------------------------------------------------*/ - -portBASE_TYPE xPortStartScheduler( void ) -{ - /* Start the timer that generates the tick ISR. */ - prvSetupTimerInterrupt(); - - /* Start the first task. This is done from portISR.c as ARM mode must be - used. */ - vPortISRStartFirstTask(); - - /* Should not get here! */ - return 0; -} -/*-----------------------------------------------------------*/ - -void vPortEndScheduler( void ) -{ - /* It is unlikely that the ARM port will require this function as there - is nothing to return to. If this is required - stop the tick ISR then - return back to main. */ -} -/*-----------------------------------------------------------*/ - -static void prvSetupTimerInterrupt( void ) -{ -unsigned portLONG ulCompareMatch; - - /* A 1ms tick does not require the use of the timer prescale. This is - defaulted to zero but can be used if necessary. */ - T0PR = portPRESCALE_VALUE; - - /* Calculate the match value required for our wanted tick rate. */ - ulCompareMatch = configCPU_CLOCK_HZ / configTICK_RATE_HZ; - - /* Protect against divide by zero. Using an if() statement still results - in a warning - hence the #if. */ - #if portPRESCALE_VALUE != 0 - { - ulCompareMatch /= ( portPRESCALE_VALUE + 1 ); - } - #endif - - T0MR0 = ulCompareMatch; - - /* Generate tick with timer 0 compare match. */ - T0MCR = portRESET_COUNT_ON_MATCH | portINTERRUPT_ON_MATCH; - - /* Setup the VIC for the timer. */ - VICIntSelect &= ~( portTIMER_VIC_CHANNEL_BIT ); - VICIntEnable |= portTIMER_VIC_CHANNEL_BIT; - - /* The ISR installed depends on whether the preemptive or cooperative - scheduler is being used. */ - #if configUSE_PREEMPTION == 1 - { - #ifdef KEIL_THUMB_INTERWORK - extern void ( vPreemptiveTick )( void ) __arm __task; - #else - extern void ( vPreemptiveTick )( void ) __task; - #endif - - VICVectAddr0 = ( unsigned portLONG ) vPreemptiveTick; - } - #else - { - extern void ( vNonPreemptiveTick )( void ) __irq; - - VICVectAddr0 = ( portLONG ) vNonPreemptiveTick; - } - #endif - - VICVectCntl0 = portTIMER_VIC_CHANNEL | portTIMER_VIC_ENABLE; - - /* Start the timer - interrupts are disabled when this function is called - so it is okay to do this here. */ - T0TCR = portENABLE_TIMER; -} -/*-----------------------------------------------------------*/ - - - diff --git a/Source/portable/Keil/ARM7/portISR.c b/Source/portable/Keil/ARM7/portISR.c deleted file mode 100644 index 50020960a..000000000 --- a/Source/portable/Keil/ARM7/portISR.c +++ /dev/null @@ -1,261 +0,0 @@ -/* - FreeRTOS.org V5.0.4 - Copyright (C) 2003-2008 Richard Barry. - - This file is part of the FreeRTOS.org distribution. - - FreeRTOS.org 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.org 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.org; 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.org, 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. - - *************************************************************************** - *************************************************************************** - * * - * SAVE TIME AND MONEY! We can port FreeRTOS.org to your own hardware, * - * and even write all or part of your application on your behalf. * - * See http://www.OpenRTOS.com for details of the services we provide to * - * expedite your project. * - * * - *************************************************************************** - *************************************************************************** - - Please ensure to read the configuration and relevant port sections of the - online documentation. - - http://www.FreeRTOS.org - Documentation, latest information, license and - contact details. - - http://www.SafeRTOS.com - A version that is certified for use in safety - critical systems. - - http://www.OpenRTOS.com - Commercial support, development, porting, - licensing and training services. -*/ - - -/*----------------------------------------------------------- - * Components that can be compiled to either ARM or THUMB mode are - * contained in port.c The ISR routines, which can only be compiled - * to ARM mode, are contained in this file. - *----------------------------------------------------------*/ - -/* This file must always be compiled to ARM mode as it contains ISR -definitions. */ -#pragma ARM - -/* Scheduler includes. */ -#include "FreeRTOS.h" -#include "task.h" - -/* Constants required to handle interrupts. */ -#define portTIMER_MATCH_ISR_BIT ( ( unsigned portCHAR ) 0x01 ) -#define portCLEAR_VIC_INTERRUPT ( ( unsigned portLONG ) 0 ) - -/*-----------------------------------------------------------*/ - -/* The code generated by the Keil compiler does not maintain separate -stack and frame pointers. The portENTER_CRITICAL macro cannot therefore -use the stack as per other ports. Instead a variable is used to keep -track of the critical section nesting. This variable has to be stored -as part of the task context and must be initialised to a non zero value. */ - -#define portNO_CRITICAL_NESTING ( ( unsigned portLONG ) 0 ) -volatile unsigned portLONG ulCriticalNesting = 9999UL; - -/*-----------------------------------------------------------*/ - -/* ISR to handle manual context switches (from a call to taskYIELD()). */ -void vPortYieldProcessor( void ); - -/* - * The scheduler can only be started from ARM mode, hence the inclusion of this - * function here. - */ -void vPortISRStartFirstTask( void ); - -/*-----------------------------------------------------------*/ - -void vPortISRStartFirstTask( void ) -{ - /* Simply start the scheduler. This is included here as it can only be - called from ARM mode. */ - portRESTORE_CONTEXT(); -} -/*-----------------------------------------------------------*/ - -/* - * Interrupt service routine for the SWI interrupt. The vector table is - * configured within startup.s. - * - * vPortYieldProcessor() is used to manually force a context switch. The - * SWI interrupt is generated by a call to taskYIELD() or portYIELD(). - */ -void vPortYieldProcessor( void ) __task -{ - /* Within an IRQ ISR the link register has an offset from the true return - address, but an SWI ISR does not. Add the offset manually so the same - ISR return code can be used in both cases. */ - __asm{ ADD LR, LR, #4 }; - - /* Perform the context switch. */ - portSAVE_CONTEXT(); - vTaskSwitchContext(); - portRESTORE_CONTEXT(); -} -/*-----------------------------------------------------------*/ - -/* - * The ISR used for the scheduler tick depends on whether the cooperative or - * the preemptive scheduler is being used. - */ - -#if configUSE_PREEMPTION == 0 - - /* - * The cooperative scheduler requires a normal IRQ service routine to - * simply increment the system tick. - */ - void vNonPreemptiveTick( void ); - void vNonPreemptiveTick( void ) __irq - { - /* Increment the tick count - this may make a delaying task ready - to run - but a context switch is not performed. */ - vTaskIncrementTick(); - - /* Ready for the next interrupt. */ - T0IR = portTIMER_MATCH_ISR_BIT; - VICVectAddr = portCLEAR_VIC_INTERRUPT; - } - -#else - - /* - * The preemptive scheduler ISR is defined as "naked" as the full context - * is saved on entry as part of the context switch. - */ - void vPreemptiveTick( void ); - void vPreemptiveTick( void ) __task - { - /* Save the context of the current task. */ - portSAVE_CONTEXT(); - - /* Increment the tick count - this may make a delayed task ready to - run. */ - vTaskIncrementTick(); - - /* Find the highest priority task that is ready to run. */ - vTaskSwitchContext(); - - /* Ready for the next interrupt. */ - T0IR = portTIMER_MATCH_ISR_BIT; - VICVectAddr = portCLEAR_VIC_INTERRUPT; - - /* Restore the context of the highest priority task that is ready to - run. */ - portRESTORE_CONTEXT(); - } -#endif -/*-----------------------------------------------------------*/ - -/* - * The interrupt management utilities can only be called from ARM mode. When - * KEIL_THUMB_INTERWORK is defined the utilities are defined as functions here - * to ensure a switch to ARM mode. When KEIL_THUMB_INTERWORK is not defined - * then the utilities are defined as macros in portmacro.h - as per other - * ports. - */ -#ifdef KEIL_THUMB_INTERWORK - - void vPortDisableInterruptsFromThumb( void ) __task; - void vPortEnableInterruptsFromThumb( void ) __task; - - void vPortDisableInterruptsFromThumb( void ) __task - { - __asm{ STMDB SP!, {R0} }; /* Push R0. */ - __asm{ MRS R0, CPSR }; /* Get CPSR. */ - __asm{ ORR R0, R0, #0xC0 }; /* Disable IRQ, FIQ. */ - __asm{ MSR CPSR_CXSF, R0 }; /* Write back modified value. */ - __asm{ LDMIA SP!, {R0} }; /* Pop R0. */ - __asm{ BX R14 }; /* Return back to thumb. */ - } - - void vPortEnableInterruptsFromThumb( void ) __task - { - __asm{ STMDB SP!, {R0} }; /* Push R0. */ - __asm{ MRS R0, CPSR }; /* Get CPSR. */ - __asm{ BIC R0, R0, #0xC0 }; /* Enable IRQ, FIQ. */ - __asm{ MSR CPSR_CXSF, R0 }; /* Write back modified value. */ - __asm{ LDMIA SP!, {R0} }; /* Pop R0. */ - __asm{ BX R14 }; /* Return back to thumb. */ - } - -#endif /* KEIL_THUMB_INTERWORK */ - - - -/* The code generated by the Keil compiler does not maintain separate -stack and frame pointers. The portENTER_CRITICAL macro cannot therefore -use the stack as per other ports. Instead a variable is used to keep -track of the critical section nesting. This necessitates the use of a -function in place of the macro. */ - -void vPortEnterCritical( void ) -{ - /* Disable interrupts as per portDISABLE_INTERRUPTS(); */ - __asm{ STMDB SP!, {R0} }; /* Push R0. */ - __asm{ MRS R0, CPSR }; /* Get CPSR. */ - __asm{ ORR R0, R0, #0xC0 }; /* Disable IRQ, FIQ. */ - __asm{ MSR CPSR_CXSF, R0 }; /* Write back modified value. */ - __asm{ LDMIA SP!, {R0} }; /* Pop R0. */ - - /* Now interrupts are disabled ulCriticalNesting can be accessed - directly. Increment ulCriticalNesting to keep a count of how many times - portENTER_CRITICAL() has been called. */ - ulCriticalNesting++; -} - -void vPortExitCritical( void ) -{ - if( ulCriticalNesting > portNO_CRITICAL_NESTING ) - { - /* Decrement the nesting count as we are leaving a critical section. */ - ulCriticalNesting--; - - /* If the nesting level has reached zero then interrupts should be - re-enabled. */ - if( ulCriticalNesting == portNO_CRITICAL_NESTING ) - { - /* Enable interrupts as per portEXIT_CRITICAL(). */ - __asm{ STMDB SP!, {R0} }; /* Push R0. */ - __asm{ MRS R0, CPSR }; /* Get CPSR. */ - __asm{ BIC R0, R0, #0xC0 }; /* Enable IRQ, FIQ. */ - __asm{ MSR CPSR_CXSF, R0 }; /* Write back modified value. */ - __asm{ LDMIA SP!, {R0} }; /* Pop R0. */ - } - } -} - - - - - - - - - - diff --git a/Source/portable/Keil/ARM7/portmacro.h b/Source/portable/Keil/ARM7/portmacro.h deleted file mode 100644 index 4a97b5e4c..000000000 --- a/Source/portable/Keil/ARM7/portmacro.h +++ /dev/null @@ -1,247 +0,0 @@ -/* - FreeRTOS.org V5.0.4 - Copyright (C) 2003-2008 Richard Barry. - - This file is part of the FreeRTOS.org distribution. - - FreeRTOS.org 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.org 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.org; 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.org, 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. - - *************************************************************************** - *************************************************************************** - * * - * SAVE TIME AND MONEY! We can port FreeRTOS.org to your own hardware, * - * and even write all or part of your application on your behalf. * - * See http://www.OpenRTOS.com for details of the services we provide to * - * expedite your project. * - * * - *************************************************************************** - *************************************************************************** - - Please ensure to read the configuration and relevant port sections of the - online documentation. - - http://www.FreeRTOS.org - Documentation, latest information, license and - contact details. - - http://www.SafeRTOS.com - A version that is certified for use in safety - critical systems. - - http://www.OpenRTOS.com - Commercial support, development, porting, - licensing and training services. -*/ - - -#ifndef PORTMACRO_H -#define PORTMACRO_H - -#ifdef __cplusplus -extern "C" { -#endif - -/*----------------------------------------------------------- - * Port specific definitions. - * - * The settings in this file configure FreeRTOS correctly for the - * given hardware and compiler. - * - * These settings should not be altered. - *----------------------------------------------------------- - */ - -/* Type definitions. */ -#define portCHAR char -#define portFLOAT float -#define portDOUBLE double -#define portLONG long -#define portSHORT short -#define portSTACK_TYPE unsigned portLONG -#define portBASE_TYPE portLONG - -#if( configUSE_16_BIT_TICKS == 1 ) - typedef unsigned portSHORT portTickType; - #define portMAX_DELAY ( portTickType ) 0xffff -#else - typedef unsigned portLONG portTickType; - #define portMAX_DELAY ( portTickType ) 0xffffffff -#endif -/*-----------------------------------------------------------*/ - -/* Hardware specifics. */ -#define portSTACK_GROWTH ( -1 ) -#define portTICK_RATE_MS ( ( portTickType ) 1000 / configTICK_RATE_HZ ) -#define portBYTE_ALIGNMENT 4 -/*-----------------------------------------------------------*/ - -/* Task utilities. */ -#define portRESTORE_CONTEXT() \ -{ \ -extern volatile unsigned portLONG ulCriticalNesting; \ -extern volatile void * volatile pxCurrentTCB; \ - \ - __asm{ LDR R1, =pxCurrentTCB };/* Set the LR to the task stack. The location was ... */ \ - __asm{ LDR R0, [R1] }; /* ... stored in pxCurrentTCB. */ \ - __asm{ LDR LR, [R0] }; \ - \ - __asm{ LDR R0, =ulCriticalNesting }; /* The critical nesting depth is the first item on ... */ \ - __asm{ LDMFD LR!, {R1 } } /* ... the stack. Load it into the ulCriticalNesting var. */ \ - __asm{ STR R1, [R0] } \ - \ - __asm{ LDMFD LR!, {R0} }; /* Get the SPSR from the stack. */ \ - __asm{ MSR SPSR_CXSF, R0 }; \ - \ - __asm{ LDMFD LR, {R0-R14}^ }; /* Restore all system mode registers for the task. */ \ - __asm{ NOP }; \ - \ - __asm{ LDR LR, [LR, #+60] }; /* Restore the return address. */ \ - \ - /* And return - correcting the offset in the LR to obtain ... */ \ - __asm{ SUBS PC, LR, #4 }; /* ... the correct address. */ \ -} -/*----------------------------------------------------------*/ - -#define portSAVE_CONTEXT() \ -{ \ -extern volatile unsigned portLONG ulCriticalNesting; \ -extern volatile void * volatile pxCurrentTCB; \ - \ - __asm{ STMDB SP!, {R0} }; /* Store R0 first as we need to use it. */ \ - \ - __asm{ STMDB SP,{SP}^ }; /* Set R0 to point to the task stack pointer. */ \ - __asm{ NOP }; \ - __asm{ SUB SP, SP, #4 }; \ - __asm{ LDMIA SP!,{R0} }; \ - \ - __asm{ STMDB R0!, {LR} }; /* Push the return address onto the stack. */ \ - __asm{ MOV LR, R0 }; /* Now we have saved LR we can use it instead of R0. */ \ - __asm{ LDMIA SP!, {R0} }; /* Pop R0 so we can save it onto the system mode stack. */ \ - \ - __asm{ STMDB LR,{R0-LR}^ }; /* Push all the system mode registers onto the task stack. */ \ - __asm{ NOP }; \ - __asm{ SUB LR, LR, #60 }; \ - \ - __asm{ MRS R0, SPSR }; /* Push the SPSR onto the task stack. */ \ - __asm{ STMDB LR!, {R0} }; \ - \ - __asm{ LDR R0, =ulCriticalNesting }; \ - __asm{ LDR R0, [R0] }; \ - __asm{ STMDB LR!, {R0} }; \ - \ - __asm{ LDR R0, =pxCurrentTCB };/* Store the new top of stack for the task. */ \ - __asm{ LDR R1, [R0] }; \ - __asm{ STR LR, [R1] }; \ -} - -/*----------------------------------------------------------- - * ISR entry and exit macros. These are only required if a task switch - * is required from an ISR. - *----------------------------------------------------------*/ - -#define portENTER_SWITCHING_ISR() \ - portSAVE_CONTEXT(); \ - { - -#define portEXIT_SWITCHING_ISR( SwitchRequired ) \ - /* If a switch is required then we just need to call */ \ - /* vTaskSwitchContext() as the context has already been */ \ - /* saved. */ \ - if( SwitchRequired ) \ - { \ - vTaskSwitchContext(); \ - } \ - } \ - /* Restore the context of which ever task is now the highest */ \ - /* priority that is ready to run. */ \ - portRESTORE_CONTEXT(); - - -/* Yield the processor - force a context switch. */ -#define portYIELD() __asm{ SWI 0 }; -/*-----------------------------------------------------------*/ - -/* Critical section management. */ - -/*----------------------------------------------------------- - * Interrupt control macros. - * - * The interrupt management utilities can only be called from ARM mode. When - * KEIL_THUMB_INTERWORK is defined the utilities are defined as functions in - * portISR.c to ensure a switch to ARM mode. When KEIL_THUMB_INTERWORK is not - * defined then the utilities are defined as macros here - as per other ports. - *----------------------------------------------------------*/ - -#ifdef KEIL_THUMB_INTERWORK - - extern void vPortDisableInterruptsFromThumb( void ) __task; - extern void vPortEnableInterruptsFromThumb( void ) __task; - - #define portDISABLE_INTERRUPTS() vPortDisableInterruptsFromThumb() - #define portENABLE_INTERRUPTS() vPortEnableInterruptsFromThumb() - -#else - - /*-----------------------------------------------------------*/ - - #define portDISABLE_INTERRUPTS() \ - __asm{ STMDB SP!, {R0} }; /* Push R0. */ \ - __asm{ MRS R0, CPSR }; /* Get CPSR. */ \ - __asm{ ORR R0, R0, #0xC0 }; /* Disable IRQ, FIQ. */ \ - __asm{ MSR CPSR_CXSF, R0 }; /* Write back modified value. */ \ - __asm{ LDMIA SP!, {R0} } /* Pop R0. */ - - #define portENABLE_INTERRUPTS() \ - __asm{ STMDB SP!, {R0} }; /* Push R0. */ \ - __asm{ MRS R0, CPSR }; /* Get CPSR. */ \ - __asm{ BIC R0, R0, #0xC0 }; /* Enable IRQ, FIQ. */ \ - __asm{ MSR CPSR_CXSF, R0 }; /* Write back modified value. */ \ - __asm{ LDMIA SP!, {R0} } /* Pop R0. */ - -#endif /* KEIL_THUMB_INTERWORK */ - -/*----------------------------------------------------------- - * Critical section control - * - * The code generated by the Keil compiler does not maintain separate - * stack and frame pointers. The portENTER_CRITICAL macro cannot therefore - * use the stack as per other ports. Instead a variable is used to keep - * track of the critical section nesting. This necessitates the use of a - * function in place of the macro. - *----------------------------------------------------------*/ - -extern void vPortEnterCritical( void ); -extern void vPortExitCritical( void ); - -#define portENTER_CRITICAL() vPortEnterCritical(); -#define portEXIT_CRITICAL() vPortExitCritical(); -/*-----------------------------------------------------------*/ - -#define register -#define portNOP() __asm{ NOP } -/*-----------------------------------------------------------*/ - -/* Task function macros as described on the FreeRTOS.org WEB site. */ -#define portTASK_FUNCTION_PROTO( vFunction, pvParameters ) void vFunction( void *pvParameters ) __task -#define portTASK_FUNCTION( vFunction, pvParameters ) void vFunction( void *pvParameters ) - -#ifdef __cplusplus -} -#endif - -#endif /* PORTMACRO_H */ -