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Basic demo up and running.

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This commit is contained in:
Richard Barry 2008-08-08 12:50:22 +00:00
parent 5ff84b9869
commit 181889d6b1
3 changed files with 48 additions and 9 deletions
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18
Source/portable/GCC/ColdFire_V2/port.c
View file

@ -125,17 +125,12 @@ portSTACK_TYPE *pxPortInitialiseStack( portSTACK_TYPE * pxTopOfStack, pdTASK_COD
portBASE_TYPE xPortStartScheduler( void )
{
extern void vPortStartFirstTask( void );
ulCriticalNesting = 0UL;
vApplicationSetupInterrupts();
asm volatile(
"move.l pxCurrentTCB, %sp \n\t"\
"move.l (%sp), %sp \n\t"\
"movem.l (%sp), %d0-%fp \n\t"\
"lea.l %sp@(60), %sp \n\t"\
"rte "
);
vPortStartFirstTask();
return pdFALSE;
}
@ -173,6 +168,13 @@ void vPortClearInterruptMaskFromISR( unsigned portBASE_TYPE uxSavedInterruptMask
{
}
void vPortClearYield( void )
{
/* -32 as we are using the high word of the 64bit mask. */
MCF_INTC0_INTFRCH &= ~( 1UL << ( configYIELD_INTERRUPT_VECTOR - 32UL ) );
}

36
Source/portable/GCC/ColdFire_V2/portasm.S
View file

@ -9,9 +9,31 @@
*/
.global ulPortSetIPL
.global __cs3_isr_interrupt_127
.global __cs3_isr_interrupt_119
.global vPortStartFirstTask
.text
.macro portSAVE_CONTEXT
lea.l (-60, %sp), %sp
movem.l %d0-%fp, (%sp)
move.l pxCurrentTCB, %a0
move.l %sp, (%a0)
.endm
.macro portRESTORE_CONTEXT
move.l pxCurrentTCB, %sp
move.l (%sp), %sp
movem.l (%sp), %d0-%fp
lea.l %sp@(60), %sp
rte
.endm
/********************************************************************/
/*
* This routines changes the IPL to the value passed into the routine.
@ -47,6 +69,20 @@ ulPortSetIPL:
rts
/********************************************************************/
/* Yield interrupt. */
__cs3_isr_interrupt_127:
portSAVE_CONTEXT
jsr vPortClearYield
jsr vTaskSwitchContext
portRESTORE_CONTEXT
/********************************************************************/
vPortStartFirstTask:
portRESTORE_CONTEXT
.end

3
Source/portable/GCC/ColdFire_V2/portmacro.h
View file

@ -106,7 +106,8 @@ extern void vPortClearInterruptMaskFromISR( unsigned portBASE_TYPE );
/* Task utilities. */
#define portYIELD()
#define portYIELD() MCF_INTC0_INTFRCH |= ( 1UL << ( configYIELD_INTERRUPT_VECTOR - 32UL ) ); portNOP(); portNOP(); portNOP(); /* -32 as we are using the high word of the 64bit mask. */
#define portNOP() asm volatile ( "nop" )