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Tidy up and comment.

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This commit is contained in:
Richard Barry 2009-01-28 12:37:04 +00:00
parent 2fd4047164
commit 761540892b
3 changed files with 49 additions and 47 deletions
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34
Source/portable/IAR/V850ES_Fx3/ISR_Support.h
View file

@ -58,12 +58,12 @@
portSAVE_CONTEXT MACRO portSAVE_CONTEXT MACRO
add -0x0C,sp ; prepare stack to save necessary values add -0x0C,sp ; prepare stack to save necessary values
st.w lp,8[sp] ; store LP to stack st.w lp,8[sp] ; store LP to stack
stsr 0,r31 stsr 0,r31
st.w lp,4[sp] ; store EIPC to stack st.w lp,4[sp] ; store EIPC to stack
stsr 1,lp stsr 1,lp
st.w lp,0[sp] ; store EIPSW to stack st.w lp,0[sp] ; store EIPSW to stack
#if configDATA_MODE == 1 ; Using the Tiny data model #if configDATA_MODE == 1 ; Using the Tiny data model
prepare {r20,r21,r22,r23,r24,r25,r26,r27,r28,r29,r30},76,sp ; save general purpose registers prepare {r20,r21,r22,r23,r24,r25,r26,r27,r28,r29,r30},76,sp ; save general purpose registers
sst.w r19,72[ep] sst.w r19,72[ep]
@ -102,10 +102,10 @@ portSAVE_CONTEXT MACRO
#endif /* configDATA_MODE */ #endif /* configDATA_MODE */
sst.w r2,8[ep] sst.w r2,8[ep]
sst.w r1,4[ep] sst.w r1,4[ep]
MOVHI hi1(usCriticalNesting),r0,r1 ; save usCriticalNesting value to stack MOVHI hi1(usCriticalNesting),r0,r1 ; save usCriticalNesting value to stack
ld.w lw1(usCriticalNesting)[r1],r2 ld.w lw1(usCriticalNesting)[r1],r2
sst.w r2,0[ep] sst.w r2,0[ep]
MOVHI hi1(pxCurrentTCB),r0,r1 ; save SP to top of current TCB MOVHI hi1(pxCurrentTCB),r0,r1 ; save SP to top of current TCB
ld.w lw1(pxCurrentTCB)[r1],r2 ld.w lw1(pxCurrentTCB)[r1],r2
st.w sp,0[r2] st.w sp,0[r2]
ENDM ENDM
@ -113,17 +113,17 @@ portSAVE_CONTEXT MACRO
portRESTORE_CONTEXT MACRO portRESTORE_CONTEXT MACRO
MOVHI hi1(pxCurrentTCB),r0,r1 ; get Stackpointer address MOVHI hi1(pxCurrentTCB),r0,r1 ; get Stackpointer address
ld.w lw1(pxCurrentTCB)[r1],sp ld.w lw1(pxCurrentTCB)[r1],sp
MOV sp,r1 MOV sp,r1
ld.w 0[r1],sp ; load stackpointer ld.w 0[r1],sp ; load stackpointer
MOV sp,ep ; set stack pointer to element pointer MOV sp,ep ; set stack pointer to element pointer
sld.w 0[ep],r1 ; load usCriticalNesting value from stack sld.w 0[ep],r1 ; load usCriticalNesting value from stack
MOVHI hi1(usCriticalNesting),r0,r2 MOVHI hi1(usCriticalNesting),r0,r2
st.w r1,lw1(usCriticalNesting)[r2] st.w r1,lw1(usCriticalNesting)[r2]
sld.w 4[ep],r1 ; restore general purpose registers sld.w 4[ep],r1 ; restore general purpose registers
sld.w 8[ep],r2 sld.w 8[ep],r2
#if configDATA_MODE == 1 ; Using Tiny data model #if configDATA_MODE == 1 ; Using Tiny data model
sld.w 12[ep],r4 sld.w 12[ep],r4
sld.w 16[ep],r5 sld.w 16[ep],r5
sld.w 20[ep],r6 sld.w 20[ep],r6
@ -141,7 +141,7 @@ portRESTORE_CONTEXT MACRO
sld.w 68[ep],r18 sld.w 68[ep],r18
sld.w 72[ep],r19 sld.w 72[ep],r19
dispose 76,{r20,r21,r22,r23,r24,r25,r26,r27,r28,r29,r30} dispose 76,{r20,r21,r22,r23,r24,r25,r26,r27,r28,r29,r30}
#else ; Using Small/Large data model #else ; Using Small/Large data model
sld.w 12[ep],r5 sld.w 12[ep],r5
sld.w 16[ep],r6 sld.w 16[ep],r6
sld.w 20[ep],r7 sld.w 20[ep],r7
@ -159,12 +159,12 @@ portRESTORE_CONTEXT MACRO
sld.w 68[ep],r19 sld.w 68[ep],r19
dispose 72,{r20,r21,r22,r23,r24,r26,r27,r28,r29,r30} dispose 72,{r20,r21,r22,r23,r24,r26,r27,r28,r29,r30}
#endif /* configDATA_MODE */ #endif /* configDATA_MODE */
ld.w 0[sp],lp ; restore EIPSW from stack ld.w 0[sp],lp ; restore EIPSW from stack
ldsr lp,1 ldsr lp,1
ld.w 4[sp],lp ; restore EIPC from stack ld.w 4[sp],lp ; restore EIPC from stack
ldsr lp,0 ldsr lp,0
ld.w 8[sp],lp ; restore LP from stack ld.w 8[sp],lp ; restore LP from stack
add 0x0C,sp ; set SP to right position add 0x0C,sp ; set SP to right position
RETI RETI

6
Source/portable/IAR/V850ES_Fx3/port.c
View file

@ -54,8 +54,11 @@
#include "FreeRTOS.h" #include "FreeRTOS.h"
#include "task.h" #include "task.h"
/* Critical nesting should be initialised to a non zero value so interrupts don't
accidentally get enabled before the scheduler is started. */
#define portINITIAL_CRITICAL_NESTING (( portSTACK_TYPE ) 10) #define portINITIAL_CRITICAL_NESTING (( portSTACK_TYPE ) 10)
/* The PSW value assigned to tasks when they start to run for the first time. */
#define portPSW (( portSTACK_TYPE ) 0x00000000) #define portPSW (( portSTACK_TYPE ) 0x00000000)
/* We require the address of the pxCurrentTCB variable, but don't want to know /* We require the address of the pxCurrentTCB variable, but don't want to know
@ -63,11 +66,14 @@ any details of its type. */
typedef void tskTCB; typedef void tskTCB;
extern volatile tskTCB * volatile pxCurrentTCB; extern volatile tskTCB * volatile pxCurrentTCB;
/* Keeps track of the nesting level of critical sections. */
volatile portSTACK_TYPE usCriticalNesting = portINITIAL_CRITICAL_NESTING; volatile portSTACK_TYPE usCriticalNesting = portINITIAL_CRITICAL_NESTING;
/*-----------------------------------------------------------*/ /*-----------------------------------------------------------*/
/* Sets up the timer to generate the tick interrupt. */
static void prvSetupTimerInterrupt( void ); static void prvSetupTimerInterrupt( void );
/*-----------------------------------------------------------*/
portSTACK_TYPE *pxPortInitialiseStack( portSTACK_TYPE *pxTopOfStack, pdTASK_CODE pxCode, void *pvParameters ) portSTACK_TYPE *pxPortInitialiseStack( portSTACK_TYPE *pxTopOfStack, pdTASK_CODE pxCode, void *pvParameters )
{ {
*pxTopOfStack = ( portSTACK_TYPE ) pxCode; /* Task function start address */ *pxTopOfStack = ( portSTACK_TYPE ) pxCode; /* Task function start address */

56
Source/portable/IAR/V850ES_Fx3/portmacro.h
View file

@ -91,34 +91,34 @@ extern "C" {
/* Critical section control macros. */ /* Critical section control macros. */
#define portNO_CRITICAL_SECTION_NESTING ( ( unsigned portBASE_TYPE ) 0 ) #define portNO_CRITICAL_SECTION_NESTING ( ( unsigned portBASE_TYPE ) 0 )
#define portENTER_CRITICAL() \ #define portENTER_CRITICAL() \
{ \ { \
extern volatile /*unsigned portSHORT*/ portSTACK_TYPE usCriticalNesting; \ extern volatile /*unsigned portSHORT*/ portSTACK_TYPE usCriticalNesting; \
\ \
portDISABLE_INTERRUPTS(); \ portDISABLE_INTERRUPTS(); \
\ \
/* Now interrupts are disabled ulCriticalNesting can be accessed */ \ /* Now interrupts are disabled ulCriticalNesting can be accessed */ \
/* directly. Increment ulCriticalNesting to keep a count of how many */ \ /* directly. Increment ulCriticalNesting to keep a count of how many */ \
/* times portENTER_CRITICAL() has been called. */ \ /* times portENTER_CRITICAL() has been called. */ \
usCriticalNesting++; \ usCriticalNesting++; \
} }
#define portEXIT_CRITICAL() \ #define portEXIT_CRITICAL() \
{ \ { \
extern volatile /*unsigned portSHORT*/ portSTACK_TYPE usCriticalNesting; \ extern volatile /*unsigned portSHORT*/ portSTACK_TYPE usCriticalNesting; \
\ \
if( usCriticalNesting > portNO_CRITICAL_SECTION_NESTING ) \ if( usCriticalNesting > portNO_CRITICAL_SECTION_NESTING ) \
{ \ { \
/* Decrement the nesting count as we are leaving a critical section. */ \ /* Decrement the nesting count as we are leaving a critical section. */ \
usCriticalNesting--; \ usCriticalNesting--; \
\ \
/* If the nesting level has reached zero then interrupts should be */ \ /* If the nesting level has reached zero then interrupts should be */ \
/* re-enabled. */ \ /* re-enabled. */ \
if( usCriticalNesting == portNO_CRITICAL_SECTION_NESTING ) \ if( usCriticalNesting == portNO_CRITICAL_SECTION_NESTING ) \
{ \ { \
portENABLE_INTERRUPTS(); \ portENABLE_INTERRUPTS(); \
} \ } \
} \ } \
} }
/*-----------------------------------------------------------*/ /*-----------------------------------------------------------*/
@ -127,7 +127,6 @@ extern void vPortYield( void );
extern void vPortStart( void ); extern void vPortStart( void );
extern void portSAVE_CONTEXT( void ); extern void portSAVE_CONTEXT( void );
extern void portRESTORE_CONTEXT( void ); extern void portRESTORE_CONTEXT( void );
//#define portYIELD() vPortYield()
#define portYIELD() __asm ( "trap 0" ) #define portYIELD() __asm ( "trap 0" )
#define portNOP() __asm ( "NOP" ) #define portNOP() __asm ( "NOP" )
extern void vTaskSwitchContext( void ); extern void vTaskSwitchContext( void );
@ -146,9 +145,6 @@ extern void vTaskSwitchContext( void );
#define portTASK_FUNCTION( vFunction, pvParameters ) void vFunction( void *pvParameters ) #define portTASK_FUNCTION( vFunction, pvParameters ) void vFunction( void *pvParameters )
static __interrupt void MD_INTP0(void);
#ifdef __cplusplus #ifdef __cplusplus
} }
#endif #endif