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Revert Portable/oWatcom formatting (#829)

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Revert the formatting on oWatcom ports
This commit is contained in:
Soren Ptak 2023-12-07 11:40:50 -05:00 committed by GitHub
parent 0debe8c669
commit bcf7bdaa13
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6 changed files with 264 additions and 280 deletions
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87
portable/oWatcom/16BitDOS/Flsh186/port.c
View file

@ -27,27 +27,27 @@
*/ */
/* /*
* Changes from V1.00: Changes from V1.00:
*
+ Call to taskYIELD() from within tick ISR has been replaced by the more + Call to taskYIELD() from within tick ISR has been replaced by the more
+ efficient portSWITCH_CONTEXT(). efficient portSWITCH_CONTEXT().
+ ISR function definitions renamed to include the prv prefix. + ISR function definitions renamed to include the prv prefix.
+
+ Changes from V1.2.0: Changes from V1.2.0:
+
+ portRESET_PIC() is now called last thing before the end of the preemptive + portRESET_PIC() is now called last thing before the end of the preemptive
+ tick routine. tick routine.
+
+ Changes from V2.6.1 Changes from V2.6.1
+
+ Replaced the sUsingPreemption variable with the configUSE_PREEMPTION + Replaced the sUsingPreemption variable with the configUSE_PREEMPTION
+ macro to be consistent with the later ports. macro to be consistent with the later ports.
*/ */
/*----------------------------------------------------------- /*-----------------------------------------------------------
* Implementation of functions defined in portable.h for the Flashlite 186 * Implementation of functions defined in portable.h for the Flashlite 186
* port. * port.
*----------------------------------------------------------*/ *----------------------------------------------------------*/
#include <stdlib.h> #include <stdlib.h>
#include <i86.h> #include <i86.h>
@ -75,14 +75,12 @@ static void prvSetTickFrequency( uint32_t ulTickRateHz );
static void prvExitFunction( void ); static void prvExitFunction( void );
#if configUSE_PREEMPTION == 1 #if configUSE_PREEMPTION == 1
/* Tick service routine used by the scheduler when preemptive scheduling is
/* Tick service routine used by the scheduler when preemptive scheduling is being used. */
* being used. */
static void __interrupt __far prvPreemptiveTick( void ); static void __interrupt __far prvPreemptiveTick( void );
#else #else
/* Tick service routine used by the scheduler when cooperative scheduling is
/* Tick service routine used by the scheduler when cooperative scheduling is being used. */
* being used. */
static void __interrupt __far prvNonPreemptiveTick( void ); static void __interrupt __far prvNonPreemptiveTick( void );
#endif #endif
@ -95,7 +93,7 @@ static void __interrupt __far prvYieldProcessor( void );
static int16_t sSchedulerRunning = pdFALSE; static int16_t sSchedulerRunning = pdFALSE;
/* Points to the original routine installed on the vector we use for manual context switches. This is then used to restore the original routine during prvExitFunction(). */ /* Points to the original routine installed on the vector we use for manual context switches. This is then used to restore the original routine during prvExitFunction(). */
static void( __interrupt __far * pxOldSwitchISR )(); static void ( __interrupt __far *pxOldSwitchISR )();
/* Used to restore the original DOS context when the scheduler is ended. */ /* Used to restore the original DOS context when the scheduler is ended. */
static jmp_buf xJumpBuf; static jmp_buf xJumpBuf;
@ -108,11 +106,11 @@ BaseType_t xPortStartScheduler( void )
/* This is called with interrupts already disabled. */ /* This is called with interrupts already disabled. */
/* Remember what was on the interrupts we are going to use /* Remember what was on the interrupts we are going to use
* so we can put them back later if required. */ so we can put them back later if required. */
pxOldSwitchISR = _dos_getvect( portSWITCH_INT_NUMBER ); pxOldSwitchISR = _dos_getvect( portSWITCH_INT_NUMBER );
/* Put our manual switch (yield) function on a known /* Put our manual switch (yield) function on a known
* vector. */ vector. */
_dos_setvect( portSWITCH_INT_NUMBER, prvYieldProcessor ); _dos_setvect( portSWITCH_INT_NUMBER, prvYieldProcessor );
#if configUSE_PREEMPTION == 1 #if configUSE_PREEMPTION == 1
@ -148,7 +146,7 @@ BaseType_t xPortStartScheduler( void )
/*-----------------------------------------------------------*/ /*-----------------------------------------------------------*/
/* The tick ISR used depend on whether or not the preemptive or cooperative /* The tick ISR used depend on whether or not the preemptive or cooperative
* kernel is being used. */ kernel is being used. */
#if configUSE_PREEMPTION == 1 #if configUSE_PREEMPTION == 1
static void __interrupt __far prvPreemptiveTick( void ) static void __interrupt __far prvPreemptiveTick( void )
{ {
@ -162,15 +160,15 @@ BaseType_t xPortStartScheduler( void )
/* Reset the PIC ready for the next time. */ /* Reset the PIC ready for the next time. */
portRESET_PIC(); portRESET_PIC();
} }
#else /* if configUSE_PREEMPTION == 1 */ #else
static void __interrupt __far prvNonPreemptiveTick( void ) static void __interrupt __far prvNonPreemptiveTick( void )
{ {
/* Same as preemptive tick, but the cooperative scheduler is being used /* Same as preemptive tick, but the cooperative scheduler is being used
* so we don't have to switch in the context of the next task. */ so we don't have to switch in the context of the next task. */
xTaskIncrementTick(); xTaskIncrementTick();
portRESET_PIC(); portRESET_PIC();
} }
#endif /* if configUSE_PREEMPTION == 1 */ #endif
/*-----------------------------------------------------------*/ /*-----------------------------------------------------------*/
static void __interrupt __far prvYieldProcessor( void ) static void __interrupt __far prvYieldProcessor( void )
@ -183,31 +181,30 @@ static void __interrupt __far prvYieldProcessor( void )
void vPortEndScheduler( void ) void vPortEndScheduler( void )
{ {
/* Jump back to the processor state prior to starting the /* Jump back to the processor state prior to starting the
* scheduler. This means we are not going to be using a scheduler. This means we are not going to be using a
* task stack frame so the task can be deleted. */ task stack frame so the task can be deleted. */
longjmp( xJumpBuf, 1 ); longjmp( xJumpBuf, 1 );
} }
/*-----------------------------------------------------------*/ /*-----------------------------------------------------------*/
static void prvExitFunction( void ) static void prvExitFunction( void )
{ {
const uint16_t usTimerDisable = 0x0000; const uint16_t usTimerDisable = 0x0000;
uint16_t usTimer0Control; uint16_t usTimer0Control;
/* Interrupts should be disabled here anyway - but no /* Interrupts should be disabled here anyway - but no
* harm in making sure. */ harm in making sure. */
portDISABLE_INTERRUPTS(); portDISABLE_INTERRUPTS();
if( sSchedulerRunning == pdTRUE ) if( sSchedulerRunning == pdTRUE )
{ {
/* Put back the switch interrupt routines that was in place /* Put back the switch interrupt routines that was in place
* before the scheduler started. */ before the scheduler started. */
_dos_setvect( portSWITCH_INT_NUMBER, pxOldSwitchISR ); _dos_setvect( portSWITCH_INT_NUMBER, pxOldSwitchISR );
} }
/* Disable the timer used for the tick to ensure the scheduler is /* Disable the timer used for the tick to ensure the scheduler is
* not called before restoring interrupts. There was previously nothing not called before restoring interrupts. There was previously nothing
* on this timer so there is no old ISR to restore. */ on this timer so there is no old ISR to restore. */
portOUTPUT_WORD( portTIMER_1_CONTROL_REGISTER, usTimerDisable ); portOUTPUT_WORD( portTIMER_1_CONTROL_REGISTER, usTimerDisable );
/* Restart the DOS tick. */ /* Restart the DOS tick. */
@ -222,18 +219,18 @@ static void prvExitFunction( void )
static void prvSetTickFrequency( uint32_t ulTickRateHz ) static void prvSetTickFrequency( uint32_t ulTickRateHz )
{ {
const uint16_t usMaxCountRegister = 0xff5a; const uint16_t usMaxCountRegister = 0xff5a;
const uint16_t usTimerPriorityRegister = 0xff32; const uint16_t usTimerPriorityRegister = 0xff32;
const uint16_t usTimerEnable = 0xC000; const uint16_t usTimerEnable = 0xC000;
const uint16_t usRetrigger = 0x0001; const uint16_t usRetrigger = 0x0001;
const uint16_t usTimerHighPriority = 0x0000; const uint16_t usTimerHighPriority = 0x0000;
uint16_t usTimer0Control; uint16_t usTimer0Control;
/* ( CPU frequency / 4 ) / clock 2 max count [inpw( 0xff62 ) = 7] */ /* ( CPU frequency / 4 ) / clock 2 max count [inpw( 0xff62 ) = 7] */
const uint32_t ulClockFrequency = 0x7f31a0; const uint32_t ulClockFrequency = 0x7f31a0;
uint32_t ulTimerCount = ulClockFrequency / ulTickRateHz; uint32_t ulTimerCount = ulClockFrequency / ulTickRateHz;
portOUTPUT_WORD( portTIMER_1_CONTROL_REGISTER, usTimerEnable | portTIMER_INTERRUPT_ENABLE | usRetrigger ); portOUTPUT_WORD( portTIMER_1_CONTROL_REGISTER, usTimerEnable | portTIMER_INTERRUPT_ENABLE | usRetrigger );
portOUTPUT_WORD( usMaxCountRegister, ( uint16_t ) ulTimerCount ); portOUTPUT_WORD( usMaxCountRegister, ( uint16_t ) ulTimerCount );

10
portable/oWatcom/16BitDOS/Flsh186/portmacro.h
View file

@ -60,7 +60,7 @@ typedef short BaseType_t;
typedef unsigned short UBaseType_t; typedef unsigned short UBaseType_t;
#if ( configTICK_TYPE_WIDTH_IN_BITS == TICK_TYPE_WIDTH_16_BITS ) #if( configTICK_TYPE_WIDTH_IN_BITS == TICK_TYPE_WIDTH_16_BITS )
typedef uint16_t TickType_t; typedef uint16_t TickType_t;
#define portMAX_DELAY ( TickType_t ) 0xffff #define portMAX_DELAY ( TickType_t ) 0xffff
#elif ( configTICK_TYPE_WIDTH_IN_BITS == TICK_TYPE_WIDTH_32_BITS ) #elif ( configTICK_TYPE_WIDTH_IN_BITS == TICK_TYPE_WIDTH_32_BITS )
@ -89,11 +89,11 @@ void portENABLE_INTERRUPTS( void );
/* Architecture specifics. */ /* Architecture specifics. */
#define portSTACK_GROWTH ( -1 ) #define portSTACK_GROWTH ( -1 )
#define portSWITCH_INT_NUMBER 0x80 #define portSWITCH_INT_NUMBER 0x80
#define portYIELD() __asm { int portSWITCH_INT_NUMBER } #define portYIELD() __asm{ int portSWITCH_INT_NUMBER }
#define portTICK_PERIOD_MS ( ( TickType_t ) 1000 / configTICK_RATE_HZ ) #define portTICK_PERIOD_MS ( ( TickType_t ) 1000 / configTICK_RATE_HZ )
#define portBYTE_ALIGNMENT 2 #define portBYTE_ALIGNMENT 2
#define portINITIAL_SW ( ( portSTACK_TYPE ) 0x0202 ) /* Start the tasks with interrupts enabled. */ #define portINITIAL_SW ( ( portSTACK_TYPE ) 0x0202 ) /* Start the tasks with interrupts enabled. */
#define portNOP() __asm { nop } #define portNOP() __asm{ nop }
/*-----------------------------------------------------------*/ /*-----------------------------------------------------------*/
/* Compiler specifics. */ /* Compiler specifics. */
@ -104,8 +104,8 @@ void portENABLE_INTERRUPTS( void );
/*-----------------------------------------------------------*/ /*-----------------------------------------------------------*/
/* Task function macros as described on the FreeRTOS.org WEB site. */ /* Task function macros as described on the FreeRTOS.org WEB site. */
#define portTASK_FUNCTION_PROTO( vFunction, pvParameters ) void vFunction( void * pvParameters ) #define portTASK_FUNCTION_PROTO( vFunction, pvParameters ) void vFunction( void *pvParameters )
#define portTASK_FUNCTION( vFunction, pvParameters ) void vFunction( void * pvParameters ) #define portTASK_FUNCTION( vFunction, pvParameters ) void vFunction( void *pvParameters )
/* *INDENT-OFF* */ /* *INDENT-OFF* */
#ifdef __cplusplus #ifdef __cplusplus

130
portable/oWatcom/16BitDOS/PC/port.c
View file

@ -27,27 +27,27 @@
*/ */
/* /*
* Changes from V1.00: Changes from V1.00:
*
+ Call to taskYIELD() from within tick ISR has been replaced by the more + Call to taskYIELD() from within tick ISR has been replaced by the more
+ efficient portSWITCH_CONTEXT(). efficient portSWITCH_CONTEXT().
+ ISR function definitions renamed to include the prv prefix. + ISR function definitions renamed to include the prv prefix.
+
+ Changes from V1.2.0: Changes from V1.2.0:
+
+ prvPortResetPIC() is now called last thing before the end of the + prvPortResetPIC() is now called last thing before the end of the
+ preemptive tick routine. preemptive tick routine.
+
+ Changes from V2.6.1 Changes from V2.6.1
+
+ Replaced the sUsingPreemption variable with the configUSE_PREEMPTION + Replaced the sUsingPreemption variable with the configUSE_PREEMPTION
+ macro to be consistent with the later ports. macro to be consistent with the later ports.
+
+ Changes from V4.0.1 Changes from V4.0.1
+
+ Add function prvSetTickFrequencyDefault() to set the DOS tick back to + Add function prvSetTickFrequencyDefault() to set the DOS tick back to
+ its proper value when the scheduler exits. its proper value when the scheduler exits.
*/ */
#include <stdlib.h> #include <stdlib.h>
#include <stdio.h> #include <stdio.h>
@ -60,9 +60,9 @@
#include "portasm.h" #include "portasm.h"
/*----------------------------------------------------------- /*-----------------------------------------------------------
* Implementation of functions defined in portable.h for the industrial * Implementation of functions defined in portable.h for the industrial
* PC port. * PC port.
*----------------------------------------------------------*/ *----------------------------------------------------------*/
/*lint -e950 Non ANSI reserved words okay in this file only. */ /*lint -e950 Non ANSI reserved words okay in this file only. */
@ -75,28 +75,26 @@ static void prvSetTickFrequency( uint32_t ulTickRateHz );
static void prvExitFunction( void ); static void prvExitFunction( void );
/* Either chain to the DOS tick (which itself clears the PIC) or clear the PIC /* Either chain to the DOS tick (which itself clears the PIC) or clear the PIC
* directly. We chain to the DOS tick as close as possible to the standard DOS directly. We chain to the DOS tick as close as possible to the standard DOS
* tick rate. */ tick rate. */
static void prvPortResetPIC( void ); static void prvPortResetPIC( void );
/* The tick ISR used depends on whether the preemptive or cooperative scheduler /* The tick ISR used depends on whether the preemptive or cooperative scheduler
* is being used. */ is being used. */
#if configUSE_PREEMPTION == 1 #if configUSE_PREEMPTION == 1
/* Tick service routine used by the scheduler when preemptive scheduling is
/* Tick service routine used by the scheduler when preemptive scheduling is being used. */
* being used. */
static void __interrupt __far prvPreemptiveTick( void ); static void __interrupt __far prvPreemptiveTick( void );
#else #else
/* Tick service routine used by the scheduler when cooperative scheduling is
/* Tick service routine used by the scheduler when cooperative scheduling is being used. */
* being used. */
static void __interrupt __far prvNonPreemptiveTick( void ); static void __interrupt __far prvNonPreemptiveTick( void );
#endif #endif
/* Trap routine used by taskYIELD() to manually cause a context switch. */ /* Trap routine used by taskYIELD() to manually cause a context switch. */
static void __interrupt __far prvYieldProcessor( void ); static void __interrupt __far prvYieldProcessor( void );
/* Set the tick frequency back so the floppy drive works correctly when the /* Set the tick frequency back so the floppy drive works correctly when the
* scheduler exits. */ scheduler exits. */
static void prvSetTickFrequencyDefault( void ); static void prvSetTickFrequencyDefault( void );
/*lint -e956 File scopes necessary here. */ /*lint -e956 File scopes necessary here. */
@ -108,10 +106,10 @@ static int16_t sDOSTickCounter;
static int16_t sSchedulerRunning = pdFALSE; static int16_t sSchedulerRunning = pdFALSE;
/* Points to the original routine installed on the vector we use for manual context switches. This is then used to restore the original routine during prvExitFunction(). */ /* Points to the original routine installed on the vector we use for manual context switches. This is then used to restore the original routine during prvExitFunction(). */
static void( __interrupt __far * pxOldSwitchISR )(); static void ( __interrupt __far *pxOldSwitchISR )();
/* Points to the original routine installed on the vector we use to chain to the DOS tick. This is then used to restore the original routine during prvExitFunction(). */ /* Points to the original routine installed on the vector we use to chain to the DOS tick. This is then used to restore the original routine during prvExitFunction(). */
static void( __interrupt __far * pxOldSwitchISRPlus1 )(); static void ( __interrupt __far *pxOldSwitchISRPlus1 )();
/* Used to restore the original DOS context when the scheduler is ended. */ /* Used to restore the original DOS context when the scheduler is ended. */
static jmp_buf xJumpBuf; static jmp_buf xJumpBuf;
@ -121,12 +119,12 @@ static jmp_buf xJumpBuf;
/*-----------------------------------------------------------*/ /*-----------------------------------------------------------*/
BaseType_t xPortStartScheduler( void ) BaseType_t xPortStartScheduler( void )
{ {
pxISR pxOriginalTickISR; pxISR pxOriginalTickISR;
/* This is called with interrupts already disabled. */ /* This is called with interrupts already disabled. */
/* Remember what was on the interrupts we are going to use /* Remember what was on the interrupts we are going to use
* so we can put them back later if required. */ so we can put them back later if required. */
pxOldSwitchISR = _dos_getvect( portSWITCH_INT_NUMBER ); pxOldSwitchISR = _dos_getvect( portSWITCH_INT_NUMBER );
pxOriginalTickISR = _dos_getvect( portTIMER_INT_NUMBER ); pxOriginalTickISR = _dos_getvect( portTIMER_INT_NUMBER );
pxOldSwitchISRPlus1 = _dos_getvect( portSWITCH_INT_NUMBER + 1 ); pxOldSwitchISRPlus1 = _dos_getvect( portSWITCH_INT_NUMBER + 1 );
@ -134,11 +132,11 @@ BaseType_t xPortStartScheduler( void )
prvSetTickFrequency( configTICK_RATE_HZ ); prvSetTickFrequency( configTICK_RATE_HZ );
/* Put our manual switch (yield) function on a known /* Put our manual switch (yield) function on a known
* vector. */ vector. */
_dos_setvect( portSWITCH_INT_NUMBER, prvYieldProcessor ); _dos_setvect( portSWITCH_INT_NUMBER, prvYieldProcessor );
/* Put the old tick on a different interrupt number so we can /* Put the old tick on a different interrupt number so we can
* call it when we want. */ call it when we want. */
_dos_setvect( portSWITCH_INT_NUMBER + 1, pxOriginalTickISR ); _dos_setvect( portSWITCH_INT_NUMBER + 1, pxOriginalTickISR );
#if configUSE_PREEMPTION == 1 #if configUSE_PREEMPTION == 1
@ -154,8 +152,8 @@ BaseType_t xPortStartScheduler( void )
#endif #endif
/* Setup a counter that is used to call the DOS interrupt as close /* Setup a counter that is used to call the DOS interrupt as close
* to it's original frequency as can be achieved given our chosen tick to it's original frequency as can be achieved given our chosen tick
* frequency. */ frequency. */
sDOSTickCounter = portTICKS_PER_DOS_TICK; sDOSTickCounter = portTICKS_PER_DOS_TICK;
/* Clean up function if we want to return to DOS. */ /* Clean up function if we want to return to DOS. */
@ -177,11 +175,10 @@ BaseType_t xPortStartScheduler( void )
/*-----------------------------------------------------------*/ /*-----------------------------------------------------------*/
/* The tick ISR used depends on whether the preemptive or cooperative scheduler /* The tick ISR used depends on whether the preemptive or cooperative scheduler
* is being used. */ is being used. */
#if configUSE_PREEMPTION == 1 #if configUSE_PREEMPTION == 1
/* Tick service routine used by the scheduler when preemptive scheduling is
/* Tick service routine used by the scheduler when preemptive scheduling is being used. */
* being used. */
static void __interrupt __far prvPreemptiveTick( void ) static void __interrupt __far prvPreemptiveTick( void )
{ {
/* Get the scheduler to update the task states following the tick. */ /* Get the scheduler to update the task states following the tick. */
@ -194,15 +191,15 @@ BaseType_t xPortStartScheduler( void )
/* Reset the PIC ready for the next time. */ /* Reset the PIC ready for the next time. */
prvPortResetPIC(); prvPortResetPIC();
} }
#else /* if configUSE_PREEMPTION == 1 */ #else
static void __interrupt __far prvNonPreemptiveTick( void ) static void __interrupt __far prvNonPreemptiveTick( void )
{ {
/* Same as preemptive tick, but the cooperative scheduler is being used /* Same as preemptive tick, but the cooperative scheduler is being used
* so we don't have to switch in the context of the next task. */ so we don't have to switch in the context of the next task. */
xTaskIncrementTick(); xTaskIncrementTick();
prvPortResetPIC(); prvPortResetPIC();
} }
#endif /* if configUSE_PREEMPTION == 1 */ #endif
/*-----------------------------------------------------------*/ /*-----------------------------------------------------------*/
@ -216,22 +213,19 @@ static void __interrupt __far prvYieldProcessor( void )
static void prvPortResetPIC( void ) static void prvPortResetPIC( void )
{ {
/* We are going to call the DOS tick interrupt at as close a /* We are going to call the DOS tick interrupt at as close a
* frequency to the normal DOS tick as possible. */ frequency to the normal DOS tick as possible. */
/* WE SHOULD NOT DO THIS IF YIELD WAS CALLED. */ /* WE SHOULD NOT DO THIS IF YIELD WAS CALLED. */
--sDOSTickCounter; --sDOSTickCounter;
if( sDOSTickCounter <= 0 ) if( sDOSTickCounter <= 0 )
{ {
sDOSTickCounter = ( int16_t ) portTICKS_PER_DOS_TICK; sDOSTickCounter = ( int16_t ) portTICKS_PER_DOS_TICK;
__asm { __asm{ int portSWITCH_INT_NUMBER + 1 };
int portSWITCH_INT_NUMBER + 1
};
} }
else else
{ {
/* Reset the PIC as the DOS tick is not being called to /* Reset the PIC as the DOS tick is not being called to
* do it. */ do it. */
__asm __asm
{ {
mov al, 20H mov al, 20H
@ -244,20 +238,19 @@ static void prvPortResetPIC( void )
void vPortEndScheduler( void ) void vPortEndScheduler( void )
{ {
/* Jump back to the processor state prior to starting the /* Jump back to the processor state prior to starting the
* scheduler. This means we are not going to be using a scheduler. This means we are not going to be using a
* task stack frame so the task can be deleted. */ task stack frame so the task can be deleted. */
longjmp( xJumpBuf, 1 ); longjmp( xJumpBuf, 1 );
} }
/*-----------------------------------------------------------*/ /*-----------------------------------------------------------*/
static void prvExitFunction( void ) static void prvExitFunction( void )
{ {
void( __interrupt __far * pxOriginalTickISR )(); void ( __interrupt __far *pxOriginalTickISR )();
/* Interrupts should be disabled here anyway - but no /* Interrupts should be disabled here anyway - but no
* harm in making sure. */ harm in making sure. */
portDISABLE_INTERRUPTS(); portDISABLE_INTERRUPTS();
if( sSchedulerRunning == pdTRUE ) if( sSchedulerRunning == pdTRUE )
{ {
/* Set the DOS tick back onto the timer ticker. */ /* Set the DOS tick back onto the timer ticker. */
@ -266,30 +259,29 @@ static void prvExitFunction( void )
prvSetTickFrequencyDefault(); prvSetTickFrequencyDefault();
/* Put back the switch interrupt routines that was in place /* Put back the switch interrupt routines that was in place
* before the scheduler started. */ before the scheduler started. */
_dos_setvect( portSWITCH_INT_NUMBER, pxOldSwitchISR ); _dos_setvect( portSWITCH_INT_NUMBER, pxOldSwitchISR );
_dos_setvect( portSWITCH_INT_NUMBER + 1, pxOldSwitchISRPlus1 ); _dos_setvect( portSWITCH_INT_NUMBER + 1, pxOldSwitchISRPlus1 );
} }
/* The tick timer is back how DOS wants it. We can re-enable /* The tick timer is back how DOS wants it. We can re-enable
* interrupts without the scheduler being called. */ interrupts without the scheduler being called. */
portENABLE_INTERRUPTS(); portENABLE_INTERRUPTS();
} }
/*-----------------------------------------------------------*/ /*-----------------------------------------------------------*/
static void prvSetTickFrequency( uint32_t ulTickRateHz ) static void prvSetTickFrequency( uint32_t ulTickRateHz )
{ {
const uint16_t usPIT_MODE = ( uint16_t ) 0x43; const uint16_t usPIT_MODE = ( uint16_t ) 0x43;
const uint16_t usPIT0 = ( uint16_t ) 0x40; const uint16_t usPIT0 = ( uint16_t ) 0x40;
const uint32_t ulPIT_CONST = ( uint32_t ) 1193180; const uint32_t ulPIT_CONST = ( uint32_t ) 1193180;
const uint16_t us8254_CTR0_MODE3 = ( uint16_t ) 0x36; const uint16_t us8254_CTR0_MODE3 = ( uint16_t ) 0x36;
uint32_t ulOutput; uint32_t ulOutput;
/* Setup the 8245 to tick at the wanted frequency. */ /* Setup the 8245 to tick at the wanted frequency. */
portOUTPUT_BYTE( usPIT_MODE, us8254_CTR0_MODE3 ); portOUTPUT_BYTE( usPIT_MODE, us8254_CTR0_MODE3 );
ulOutput = ulPIT_CONST / ulTickRateHz; ulOutput = ulPIT_CONST / ulTickRateHz;
portOUTPUT_BYTE( usPIT0, ( uint16_t ) ( ulOutput & ( uint32_t ) 0xff ) ); portOUTPUT_BYTE( usPIT0, ( uint16_t )( ulOutput & ( uint32_t ) 0xff ) );
ulOutput >>= 8; ulOutput >>= 8;
portOUTPUT_BYTE( usPIT0, ( uint16_t ) ( ulOutput & ( uint32_t ) 0xff ) ); portOUTPUT_BYTE( usPIT0, ( uint16_t ) ( ulOutput & ( uint32_t ) 0xff ) );
} }
@ -297,13 +289,13 @@ static void prvSetTickFrequency( uint32_t ulTickRateHz )
static void prvSetTickFrequencyDefault( void ) static void prvSetTickFrequencyDefault( void )
{ {
const uint16_t usPIT_MODE = ( uint16_t ) 0x43; const uint16_t usPIT_MODE = ( uint16_t ) 0x43;
const uint16_t usPIT0 = ( uint16_t ) 0x40; const uint16_t usPIT0 = ( uint16_t ) 0x40;
const uint16_t us8254_CTR0_MODE3 = ( uint16_t ) 0x36; const uint16_t us8254_CTR0_MODE3 = ( uint16_t ) 0x36;
portOUTPUT_BYTE( usPIT_MODE, us8254_CTR0_MODE3 ); portOUTPUT_BYTE( usPIT_MODE, us8254_CTR0_MODE3 );
portOUTPUT_BYTE( usPIT0, 0 ); portOUTPUT_BYTE( usPIT0,0 );
portOUTPUT_BYTE( usPIT0, 0 ); portOUTPUT_BYTE( usPIT0,0 );
} }

12
portable/oWatcom/16BitDOS/PC/portmacro.h
View file

@ -59,7 +59,7 @@ typedef short BaseType_t;
typedef unsigned short UBaseType_t; typedef unsigned short UBaseType_t;
#if ( configTICK_TYPE_WIDTH_IN_BITS == TICK_TYPE_WIDTH_16_BITS ) #if( configTICK_TYPE_WIDTH_IN_BITS == TICK_TYPE_WIDTH_16_BITS )
typedef uint16_t TickType_t; typedef uint16_t TickType_t;
#define portMAX_DELAY ( TickType_t ) 0xffff #define portMAX_DELAY ( TickType_t ) 0xffff
#elif ( configTICK_TYPE_WIDTH_IN_BITS == TICK_TYPE_WIDTH_32_BITS ) #elif ( configTICK_TYPE_WIDTH_IN_BITS == TICK_TYPE_WIDTH_32_BITS )
@ -71,7 +71,7 @@ typedef unsigned short UBaseType_t;
/*-----------------------------------------------------------*/ /*-----------------------------------------------------------*/
/* Critical section definitions. portENTER_CRITICAL() must be defined as a /* Critical section definitions. portENTER_CRITICAL() must be defined as a
* macro for portable.h to work properly. */ macro for portable.h to work properly. */
void portLOCAL_ENTER_CRITICAL( void ); void portLOCAL_ENTER_CRITICAL( void );
#pragma aux portLOCAL_ENTER_CRITICAL = "pushf" \ #pragma aux portLOCAL_ENTER_CRITICAL = "pushf" \
"cli"; "cli";
@ -90,7 +90,7 @@ void portENABLE_INTERRUPTS( void );
/* Architecture specifics. */ /* Architecture specifics. */
#define portSTACK_GROWTH ( -1 ) #define portSTACK_GROWTH ( -1 )
#define portSWITCH_INT_NUMBER 0x80 #define portSWITCH_INT_NUMBER 0x80
#define portYIELD() __asm { int portSWITCH_INT_NUMBER } #define portYIELD() __asm{ int portSWITCH_INT_NUMBER }
#define portDOS_TICK_RATE ( 18.20648 ) #define portDOS_TICK_RATE ( 18.20648 )
#define portTICK_PERIOD_MS ( ( TickType_t ) 1000 / configTICK_RATE_HZ ) #define portTICK_PERIOD_MS ( ( TickType_t ) 1000 / configTICK_RATE_HZ )
#define portTICKS_PER_DOS_TICK ( ( uint16_t ) ( ( ( portDOUBLE ) configTICK_RATE_HZ / portDOS_TICK_RATE ) + 0.5 ) ) #define portTICKS_PER_DOS_TICK ( ( uint16_t ) ( ( ( portDOUBLE ) configTICK_RATE_HZ / portDOS_TICK_RATE ) + 0.5 ) )
@ -101,12 +101,12 @@ void portENABLE_INTERRUPTS( void );
/* Compiler specifics. */ /* Compiler specifics. */
#define portINPUT_BYTE( xAddr ) inp( xAddr ) #define portINPUT_BYTE( xAddr ) inp( xAddr )
#define portOUTPUT_BYTE( xAddr, ucValue ) outp( xAddr, ucValue ) #define portOUTPUT_BYTE( xAddr, ucValue ) outp( xAddr, ucValue )
#define portNOP() __asm { nop } #define portNOP() __asm{ nop }
/*-----------------------------------------------------------*/ /*-----------------------------------------------------------*/
/* Task function macros as described on the FreeRTOS.org WEB site. */ /* Task function macros as described on the FreeRTOS.org WEB site. */
#define portTASK_FUNCTION_PROTO( vTaskFunction, pvParameters ) void vTaskFunction( void * pvParameters ) #define portTASK_FUNCTION_PROTO( vTaskFunction, pvParameters ) void vTaskFunction( void *pvParameters )
#define portTASK_FUNCTION( vTaskFunction, pvParameters ) void vTaskFunction( void * pvParameters ) #define portTASK_FUNCTION( vTaskFunction, pvParameters ) void vTaskFunction( void *pvParameters )
/* *INDENT-OFF* */ /* *INDENT-OFF* */
#ifdef __cplusplus #ifdef __cplusplus

12
portable/oWatcom/16BitDOS/common/portasm.h
View file

@ -45,10 +45,10 @@ void portSWITCH_CONTEXT( void );
void portFIRST_CONTEXT( void ); void portFIRST_CONTEXT( void );
/* There are slightly different versions depending on whether you are building /* There are slightly different versions depending on whether you are building
* to include debugger information. If debugger information is used then there to include debugger information. If debugger information is used then there
* are a couple of extra bytes left of the ISR stack (presumably for use by the are a couple of extra bytes left of the ISR stack (presumably for use by the
* debugger). The true stack pointer is then stored in the bp register. We add debugger). The true stack pointer is then stored in the bp register. We add
* 2 to the stack pointer to remove the extra bytes before we restore our context. */ 2 to the stack pointer to remove the extra bytes before we restore our context. */
#ifdef DEBUG_BUILD #ifdef DEBUG_BUILD
@ -80,7 +80,7 @@ void portFIRST_CONTEXT( void );
"pop ds" \ "pop ds" \
"popa" \ "popa" \
"iret" "iret"
#else /* ifdef DEBUG_BUILD */ #else
#pragma aux portSWITCH_CONTEXT = "mov ax, seg pxCurrentTCB" \ #pragma aux portSWITCH_CONTEXT = "mov ax, seg pxCurrentTCB" \
"mov ds, ax" \ "mov ds, ax" \
@ -106,4 +106,4 @@ void portFIRST_CONTEXT( void );
"pop ds" \ "pop ds" \
"popa" \ "popa" \
"iret" "iret"
#endif /* ifdef DEBUG_BUILD */ #endif

63
portable/oWatcom/16BitDOS/common/portcomn.c
View file

@ -27,21 +27,21 @@
*/ */
/* /*
* Changes from V1.00: Changes from V1.00:
*
+ pxPortInitialiseStack() now initialises the stack of new tasks to the + pxPortInitialiseStack() now initialises the stack of new tasks to the
+ same format used by the compiler. This allows the compiler generated same format used by the compiler. This allows the compiler generated
+ interrupt mechanism to be used for context switches. interrupt mechanism to be used for context switches.
+
+ Changes from V2.4.2: Changes from V2.4.2:
+
+ pvPortMalloc and vPortFree have been removed. The projects now use + pvPortMalloc and vPortFree have been removed. The projects now use
+ the definitions from the source/portable/MemMang directory. the definitions from the source/portable/MemMang directory.
+
+ Changes from V2.6.1: Changes from V2.6.1:
+
+ usPortCheckFreeStackSpace() has been moved to tasks.c. + usPortCheckFreeStackSpace() has been moved to tasks.c.
*/ */
@ -51,15 +51,13 @@
/*-----------------------------------------------------------*/ /*-----------------------------------------------------------*/
/* See header file for description. */ /* See header file for description. */
StackType_t * pxPortInitialiseStack( StackType_t * pxTopOfStack, StackType_t *pxPortInitialiseStack( StackType_t *pxTopOfStack, TaskFunction_t pxCode, void *pvParameters )
TaskFunction_t pxCode,
void * pvParameters )
{ {
StackType_t DS_Reg = 0; StackType_t DS_Reg = 0;
StackType_t * pxOriginalSP; StackType_t * pxOriginalSP;
/* Place a few bytes of known values on the bottom of the stack. /* Place a few bytes of known values on the bottom of the stack.
* This is just useful for debugging. */ This is just useful for debugging. */
*pxTopOfStack = 0x1111; *pxTopOfStack = 0x1111;
pxTopOfStack--; pxTopOfStack--;
@ -76,9 +74,9 @@ StackType_t * pxPortInitialiseStack( StackType_t * pxTopOfStack,
/*lint -e950 -e611 -e923 Lint doesn't like this much - but nothing I can do about it. */ /*lint -e950 -e611 -e923 Lint doesn't like this much - but nothing I can do about it. */
/* We are going to start the scheduler using a return from interrupt /* We are going to start the scheduler using a return from interrupt
* instruction to load the program counter, so first there would be the instruction to load the program counter, so first there would be the
* status register and interrupt return address. We make this the start status register and interrupt return address. We make this the start
* of the task. */ of the task. */
*pxTopOfStack = portINITIAL_SW; *pxTopOfStack = portINITIAL_SW;
pxTopOfStack--; pxTopOfStack--;
*pxTopOfStack = FP_SEG( pxCode ); *pxTopOfStack = FP_SEG( pxCode );
@ -87,15 +85,15 @@ StackType_t * pxPortInitialiseStack( StackType_t * pxTopOfStack,
pxTopOfStack--; pxTopOfStack--;
/* We are going to setup the stack for the new task to look like /* We are going to setup the stack for the new task to look like
* the stack frame was setup by a compiler generated ISR. We need to know the stack frame was setup by a compiler generated ISR. We need to know
* the address of the existing stack top to place in the SP register within the address of the existing stack top to place in the SP register within
* the stack frame. pxOriginalSP holds SP before (simulated) pusha was the stack frame. pxOriginalSP holds SP before (simulated) pusha was
* called. */ called. */
pxOriginalSP = pxTopOfStack; pxOriginalSP = pxTopOfStack;
/* The remaining registers would be pushed on the stack by our context /* The remaining registers would be pushed on the stack by our context
* switch function. These are loaded with values simply to make debugging switch function. These are loaded with values simply to make debugging
* easier. */ easier. */
*pxTopOfStack = FP_OFF( pvParameters ); /* AX */ *pxTopOfStack = FP_OFF( pvParameters ); /* AX */
pxTopOfStack--; pxTopOfStack--;
*pxTopOfStack = ( StackType_t ) 0xCCCC; /* CX */ *pxTopOfStack = ( StackType_t ) 0xCCCC; /* CX */
@ -113,9 +111,7 @@ StackType_t * pxPortInitialiseStack( StackType_t * pxTopOfStack,
*pxTopOfStack = ( StackType_t ) 0xDDDD; /* DI */ *pxTopOfStack = ( StackType_t ) 0xDDDD; /* DI */
/* We need the true data segment. */ /* We need the true data segment. */
__asm { __asm{ MOV DS_Reg, DS };
MOV DS_Reg, DS
};
pxTopOfStack--; pxTopOfStack--;
*pxTopOfStack = DS_Reg; /* DS */ *pxTopOfStack = DS_Reg; /* DS */
@ -131,11 +127,10 @@ StackType_t * pxPortInitialiseStack( StackType_t * pxTopOfStack,
#ifdef DEBUG_BUILD #ifdef DEBUG_BUILD
/* The compiler adds space to each ISR stack if building to /* The compiler adds space to each ISR stack if building to
* include debug information. Presumably this is used by the include debug information. Presumably this is used by the
* debugger - we don't need to initialise it to anything just debugger - we don't need to initialise it to anything just
* make sure it is there. */ make sure it is there. */
pxTopOfStack--; pxTopOfStack--;
#endif #endif