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This commit is contained in:
Richard Barry 2010-01-14 12:23:07 +00:00
parent c99f3c55cd
commit 68074c03d6
3 changed files with 224 additions and 11 deletions
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97
Source/portable/Renesas/SH2A_FPU/port.c
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@ -51,15 +51,15 @@
licensing and training services.
*/
/*-----------------------------------------------------------
* Implementation of functions defined in portable.h for the SH2A port.
*----------------------------------------------------------*/
/* Scheduler includes. */
#include "FreeRTOS.h"
#include "task.h"
/*-----------------------------------------------------------
* Implementation of functions defined in portable.h for the SH2A port.
*----------------------------------------------------------*/
#define portINITIAL_SR 0UL /* No interrupts masked. */
/*-----------------------------------------------------------*/
@ -74,6 +74,16 @@ static void prvSetupTimerInterrupt( void );
*/
void vPortYield( void );
/*
* Function to start the first task executing - defined in portasm.src.
*/
extern void vPortStartFirstTask( void );
/*
* Obtains the current GBR value - defined in portasm.src.
*/
extern unsigned long ulPortGetGBR( void );
/*-----------------------------------------------------------*/
/*
@ -81,16 +91,88 @@ void vPortYield( void );
*/
portSTACK_TYPE *pxPortInitialiseStack( portSTACK_TYPE *pxTopOfStack, pdTASK_CODE pxCode, void *pvParameters )
{
*pxTopOfStack = 0x11111111UL;
pxTopOfStack--;
*pxTopOfStack = 0x22222222UL;
pxTopOfStack--;
*pxTopOfStack = 0x33333333UL;
pxTopOfStack--;
/* SR. */
*pxTopOfStack = portINITIAL_SR;
pxTopOfStack--;
/* PC then MACL, MACH. */
// *pxTopOfStack = ( unsigned long ) pxCode;
// pxTopOfStack -= 3;
*pxTopOfStack = ( unsigned long ) pxCode;
pxTopOfStack--;
*pxTopOfStack = 0xffffUL;
pxTopOfStack--;
*pxTopOfStack = 0xeeeeUL;
pxTopOfStack--;
/* GBR then PR, R14-R5. */
// *pxTopOfStack = ulPortGetGBR();
// pxTopOfStack -= 12;
*pxTopOfStack = 0x00UL;
pxTopOfStack--;
*pxTopOfStack = 0x11UL;
pxTopOfStack--;
*pxTopOfStack = 0x22UL;
pxTopOfStack--;
*pxTopOfStack = 0x33UL;
pxTopOfStack--;
*pxTopOfStack = 0x44UL;
pxTopOfStack--;
*pxTopOfStack = 0x55UL;
pxTopOfStack--;
*pxTopOfStack = 0x66UL;
pxTopOfStack--;
*pxTopOfStack = 0x77UL;
pxTopOfStack--;
*pxTopOfStack = 0x88UL;
pxTopOfStack--;
*pxTopOfStack = 0x99UL;
pxTopOfStack--;
*pxTopOfStack = 0xaaUL;
pxTopOfStack--;
*pxTopOfStack = 0xbbUL;
pxTopOfStack--;
/* Parameters in R4 then R3-R0. */
// *pxTopOfStack = ( unsigned long ) pvParameters;
// pxTopOfStack -= 5;
*pxTopOfStack = 0x1UL;
pxTopOfStack--;
*pxTopOfStack = 0x2UL;
pxTopOfStack--;
*pxTopOfStack = 0x3UL;
pxTopOfStack--;
*pxTopOfStack = 0x4UL;
pxTopOfStack--;
*pxTopOfStack = 0x5UL;
//pxTopOfStack--;
/* GBR = global base register.
VBR = vector base register.
TBR = jump table base register.
R15 is the stack pointer. */
return pxTopOfStack;
}
/*-----------------------------------------------------------*/
portBASE_TYPE xPortStartScheduler( void )
{
/* Start the tick interrupt. */
prvSetupTimerInterrupt();
// prvSetupTimerInterrupt();
/* Start the first task. */
trapa( 32 );
/* Should not get here. */
return pdFAIL;
@ -103,11 +185,6 @@ void vPortEndScheduler( void )
}
/*-----------------------------------------------------------*/
void vPortYield( void )
{
}
/*-----------------------------------------------------------*/
void vPortTickInterrupt( void )
{
vTaskIncrementTick();