mirror of
https://github.com/FreeRTOS/FreeRTOS-Kernel.git
synced 2025-04-19 21:11:57 -04:00
Revert Portable/oWatcom formatting (#829)
Revert the formatting on oWatcom ports
This commit is contained in:
parent
0debe8c669
commit
bcf7bdaa13
|
@ -27,21 +27,21 @@
|
||||||
*/
|
*/
|
||||||
|
|
||||||
/*
|
/*
|
||||||
* 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+ Call to taskYIELD() from within tick ISR has been replaced by the more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+ Call to taskYIELD() from within tick ISR has been replaced by the more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.
|
||||||
*/
|
*/
|
||||||
|
|
||||||
/*-----------------------------------------------------------
|
/*-----------------------------------------------------------
|
||||||
|
@ -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
|
||||||
|
|
||||||
|
@ -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 )
|
||||||
|
@ -183,8 +181,8 @@ 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 );
|
||||||
}
|
}
|
||||||
/*-----------------------------------------------------------*/
|
/*-----------------------------------------------------------*/
|
||||||
|
@ -195,19 +193,18 @@ static void prvExitFunction( void )
|
||||||
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. */
|
||||||
|
|
|
@ -27,26 +27,26 @@
|
||||||
*/
|
*/
|
||||||
|
|
||||||
/*
|
/*
|
||||||
* 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>
|
||||||
|
@ -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. */
|
||||||
|
@ -126,7 +124,7 @@ 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 );
|
||||||
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
|
||||||
|
@ -244,8 +238,8 @@ 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 );
|
||||||
}
|
}
|
||||||
/*-----------------------------------------------------------*/
|
/*-----------------------------------------------------------*/
|
||||||
|
@ -255,9 +249,8 @@ 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. */
|
||||||
|
@ -266,13 +259,12 @@ 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();
|
||||||
}
|
}
|
||||||
/*-----------------------------------------------------------*/
|
/*-----------------------------------------------------------*/
|
||||||
|
|
|
@ -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";
|
||||||
|
|
|
@ -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
|
||||||
|
|
|
@ -27,19 +27,19 @@
|
||||||
*/
|
*/
|
||||||
|
|
||||||
/*
|
/*
|
||||||
* 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
|
||||||
|
|
||||||
|
|
Loading…
Reference in a new issue