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78
portable/GCC/RX600/port.c
View file

@ -27,8 +27,8 @@
*/
/*-----------------------------------------------------------
* Implementation of functions defined in portable.h for the SH2A port.
*----------------------------------------------------------*/
* Implementation of functions defined in portable.h for the SH2A port.
*----------------------------------------------------------*/
/* Scheduler includes. */
#include "FreeRTOS.h"
@ -52,17 +52,17 @@
/*-----------------------------------------------------------*/
/* Tasks should start with interrupts enabled and in Supervisor mode, therefore
PSW is set with U and I set, and PM and IPL clear. */
* PSW is set with U and I set, and PM and IPL clear. */
#define portINITIAL_PSW ( ( StackType_t ) 0x00030000 )
#define portINITIAL_FPSW ( ( StackType_t ) 0x00000100 )
/* These macros allow a critical section to be added around the call to
xTaskIncrementTick(), which is only ever called from interrupts at the kernel
priority - ie a known priority. Therefore these local macros are a slight
optimisation compared to calling the global SET/CLEAR_INTERRUPT_MASK macros,
which would require the old IPL to be read first and stored in a local variable. */
#define portDISABLE_INTERRUPTS_FROM_KERNEL_ISR() __asm volatile ( "MVTIPL %0" ::"i"(configMAX_SYSCALL_INTERRUPT_PRIORITY) )
#define portENABLE_INTERRUPTS_FROM_KERNEL_ISR() __asm volatile ( "MVTIPL %0" ::"i"(configKERNEL_INTERRUPT_PRIORITY) )
* xTaskIncrementTick(), which is only ever called from interrupts at the kernel
* priority - ie a known priority. Therefore these local macros are a slight
* optimisation compared to calling the global SET/CLEAR_INTERRUPT_MASK macros,
* which would require the old IPL to be read first and stored in a local variable. */
#define portDISABLE_INTERRUPTS_FROM_KERNEL_ISR() __asm volatile ( "MVTIPL %0" ::"i" ( configMAX_SYSCALL_INTERRUPT_PRIORITY ) )
#define portENABLE_INTERRUPTS_FROM_KERNEL_ISR() __asm volatile ( "MVTIPL %0" ::"i" ( configKERNEL_INTERRUPT_PRIORITY ) )
/*-----------------------------------------------------------*/
@ -70,7 +70,8 @@ which would require the old IPL to be read first and stored in a local variable.
* Function to start the first task executing - written in asm code as direct
* access to registers is required.
*/
static void prvStartFirstTask( void ) __attribute__((naked));
static void prvStartFirstTask( void ) __attribute__( ( naked ) );
/*
* Software interrupt handler. Performs the actual context switch (saving and
* restoring of registers). Written in asm code as direct register access is
@ -104,14 +105,16 @@ static void prvStartFirstTask( void ) __attribute__((naked));
/*-----------------------------------------------------------*/
extern void *pxCurrentTCB;
extern void * pxCurrentTCB;
/*-----------------------------------------------------------*/
/*
* See header file for description.
*/
StackType_t *pxPortInitialiseStack( StackType_t *pxTopOfStack, TaskFunction_t pxCode, void *pvParameters )
StackType_t * pxPortInitialiseStack( StackType_t * pxTopOfStack,
TaskFunction_t pxCode,
void * pvParameters )
{
/* R0 is not included as it is the stack pointer. */
@ -122,8 +125,8 @@ StackType_t *pxPortInitialiseStack( StackType_t *pxTopOfStack, TaskFunction_t px
*pxTopOfStack = ( StackType_t ) pxCode;
/* When debugging it can be useful if every register is set to a known
value. Otherwise code space can be saved by just setting the registers
that need to be set. */
* value. Otherwise code space can be saved by just setting the registers
* that need to be set. */
#ifdef USE_FULL_REGISTER_INITIALISATION
{
pxTopOfStack--;
@ -156,11 +159,11 @@ StackType_t *pxPortInitialiseStack( StackType_t *pxTopOfStack, TaskFunction_t px
*pxTopOfStack = 0x22222222;
pxTopOfStack--;
}
#else
#else /* ifdef USE_FULL_REGISTER_INITIALISATION */
{
pxTopOfStack -= 15;
}
#endif
#endif /* ifdef USE_FULL_REGISTER_INITIALISATION */
*pxTopOfStack = ( StackType_t ) pvParameters; /* R1 */
pxTopOfStack--;
@ -176,14 +179,14 @@ StackType_t *pxPortInitialiseStack( StackType_t *pxTopOfStack, TaskFunction_t px
BaseType_t xPortStartScheduler( void )
{
extern void vApplicationSetupTimerInterrupt( void );
extern void vApplicationSetupTimerInterrupt( void );
/* Use pxCurrentTCB just so it does not get optimised away. */
if( pxCurrentTCB != NULL )
{
/* Call an application function to set up the timer that will generate the
tick interrupt. This way the application can decide which peripheral to
use. A demo application is provided to show a suitable example. */
* tick interrupt. This way the application can decide which peripheral to
* use. A demo application is provided to show a suitable example. */
vApplicationSetupTimerInterrupt();
/* Enable the software interrupt. */
@ -207,7 +210,7 @@ extern void vApplicationSetupTimerInterrupt( void );
void vPortEndScheduler( void )
{
/* Not implemented in ports where there is nothing to return to.
Artificially force an assert. */
* Artificially force an assert. */
configASSERT( pxCurrentTCB == NULL );
}
/*-----------------------------------------------------------*/
@ -216,19 +219,22 @@ static void prvStartFirstTask( void )
{
__asm volatile
(
/* When starting the scheduler there is nothing that needs moving to the
interrupt stack because the function is not called from an interrupt.
Just ensure the current stack is the user stack. */
* interrupt stack because the function is not called from an interrupt.
* Just ensure the current stack is the user stack. */
"SETPSW U \n" \
/* Obtain the location of the stack associated with which ever task
pxCurrentTCB is currently pointing to. */
* pxCurrentTCB is currently pointing to. */
"MOV.L #_pxCurrentTCB, R15 \n" \
"MOV.L [R15], R15 \n" \
"MOV.L [R15], R0 \n" \
/* Restore the registers from the stack of the task pointed to by
pxCurrentTCB. */
* pxCurrentTCB. */
"POP R15 \n" \
/* Accumulator low 32 bits. */
@ -260,10 +266,11 @@ void vSoftwareInterruptISR( void )
/* Re-enable interrupts. */
"SETPSW I \n" \
/* Move the data that was automatically pushed onto the interrupt stack when
the interrupt occurred from the interrupt stack to the user stack.
R15 is saved before it is clobbered. */
/* Move the data that was automatically pushed onto the interrupt stack when
* the interrupt occurred from the interrupt stack to the user stack.
*
* R15 is saved before it is clobbered. */
"PUSH.L R15 \n" \
/* Read the user stack pointer. */
@ -305,8 +312,9 @@ void vSoftwareInterruptISR( void )
"MOV.L [ R15 ], R15 \n" \
"MOV.L R0, [ R15 ] \n" \
/* Ensure the interrupt mask is set to the syscall priority while the kernel
structures are being accessed. */
* structures are being accessed. */
"MVTIPL %0 \n" \
/* Select the next task to run. */
@ -315,14 +323,16 @@ void vSoftwareInterruptISR( void )
/* Reset the interrupt mask as no more data structure access is required. */
"MVTIPL %1 \n" \
/* Load the stack pointer of the task that is now selected as the Running
state task from its TCB. */
* state task from its TCB. */
"MOV.L #_pxCurrentTCB,R15 \n" \
"MOV.L [ R15 ], R15 \n" \
"MOV.L [ R15 ], R0 \n" \
/* Restore the context of the new task. The PSW (Program Status Word) and
PC will be popped by the RTE instruction. */
* PC will be popped by the RTE instruction. */
"POP R15 \n" \
"MVTACLO R15 \n" \
"POP R15 \n" \
@ -333,7 +343,7 @@ void vSoftwareInterruptISR( void )
"RTE \n" \
"NOP \n" \
"NOP "
:: "i"(configMAX_SYSCALL_INTERRUPT_PRIORITY), "i"(configKERNEL_INTERRUPT_PRIORITY)
::"i" ( configMAX_SYSCALL_INTERRUPT_PRIORITY ), "i" ( configKERNEL_INTERRUPT_PRIORITY )
);
}
/*-----------------------------------------------------------*/
@ -341,10 +351,10 @@ void vSoftwareInterruptISR( void )
void vTickISR( void )
{
/* Re-enabled interrupts. */
__asm volatile( "SETPSW I" );
__asm volatile ( "SETPSW I" );
/* Increment the tick, and perform any processing the new tick value
necessitates. Ensure IPL is at the max syscall value first. */
* necessitates. Ensure IPL is at the max syscall value first. */
portDISABLE_INTERRUPTS_FROM_KERNEL_ISR();
{
if( xTaskIncrementTick() != pdFALSE )
@ -385,5 +395,5 @@ void vPortSetIPL( uint32_t ulNewIPL )
"MVTC R5, PSW \n" \
"POP R5 \n" \
"RTS "
);
);
}

110
portable/GCC/RX600/portmacro.h
View file

@ -49,79 +49,79 @@
/* When the FIT configurator or the Smart Configurator is used, platform.h has to be
* used. */
#ifndef configINCLUDE_PLATFORM_H_INSTEAD_OF_IODEFINE_H
#define configINCLUDE_PLATFORM_H_INSTEAD_OF_IODEFINE_H 0
#define configINCLUDE_PLATFORM_H_INSTEAD_OF_IODEFINE_H 0
#endif
/* Type definitions - these are a bit legacy and not really used now, other than
portSTACK_TYPE and portBASE_TYPE. */
#define portCHAR char
#define portFLOAT float
#define portDOUBLE double
#define portLONG long
#define portSHORT short
#define portSTACK_TYPE uint32_t
#define portBASE_TYPE long
* portSTACK_TYPE and portBASE_TYPE. */
#define portCHAR char
#define portFLOAT float
#define portDOUBLE double
#define portLONG long
#define portSHORT short
#define portSTACK_TYPE uint32_t
#define portBASE_TYPE long
typedef portSTACK_TYPE StackType_t;
typedef long BaseType_t;
typedef unsigned long UBaseType_t;
typedef portSTACK_TYPE StackType_t;
typedef long BaseType_t;
typedef unsigned long UBaseType_t;
#if( configTICK_TYPE_WIDTH_IN_BITS == TICK_TYPE_WIDTH_16_BITS )
typedef uint16_t TickType_t;
#define portMAX_DELAY ( TickType_t ) 0xffff
#if ( configTICK_TYPE_WIDTH_IN_BITS == TICK_TYPE_WIDTH_16_BITS )
typedef uint16_t TickType_t;
#define portMAX_DELAY ( TickType_t ) 0xffff
#elif ( configTICK_TYPE_WIDTH_IN_BITS == TICK_TYPE_WIDTH_32_BITS )
typedef uint32_t TickType_t;
#define portMAX_DELAY ( TickType_t ) 0xffffffffUL
typedef uint32_t TickType_t;
#define portMAX_DELAY ( TickType_t ) 0xffffffffUL
/* 32-bit tick type on a 32-bit architecture, so reads of the tick count do
not need to be guarded with a critical section. */
#define portTICK_TYPE_IS_ATOMIC 1
/* 32-bit tick type on a 32-bit architecture, so reads of the tick count do
* not need to be guarded with a critical section. */
#define portTICK_TYPE_IS_ATOMIC 1
#else
#error configTICK_TYPE_WIDTH_IN_BITS set to unsupported tick type width.
#endif
/*-----------------------------------------------------------*/
/* Hardware specifics. */
#define portBYTE_ALIGNMENT 8 /* Could make four, according to manual. */
#define portSTACK_GROWTH -1
#define portTICK_PERIOD_MS ( ( TickType_t ) 1000 / configTICK_RATE_HZ )
#define portNOP() __asm volatile( "NOP" )
#define portBYTE_ALIGNMENT 8 /* Could make four, according to manual. */
#define portSTACK_GROWTH -1
#define portTICK_PERIOD_MS ( ( TickType_t ) 1000 / configTICK_RATE_HZ )
#define portNOP() __asm volatile ( "NOP" )
/* Yield equivalent to "*portITU_SWINTR = 0x01; ( void ) *portITU_SWINTR;"
where portITU_SWINTR is the location of the software interrupt register
(0x000872E0). Don't rely on the assembler to select a register, so instead
save and restore clobbered registers manually. */
#define portYIELD() \
__asm volatile \
( \
"PUSH.L R10 \n" \
"MOV.L #0x872E0, R10 \n" \
"MOV.B #0x1, [R10] \n" \
"MOV.L [R10], R10 \n" \
"POP R10 \n" \
* where portITU_SWINTR is the location of the software interrupt register
* (0x000872E0). Don't rely on the assembler to select a register, so instead
* save and restore clobbered registers manually. */
#define portYIELD() \
__asm volatile \
( \
"PUSH.L R10 \n" \
"MOV.L #0x872E0, R10 \n" \
"MOV.B #0x1, [R10] \n" \
"MOV.L [R10], R10 \n" \
"POP R10 \n" \
)
#define portYIELD_FROM_ISR( x ) do { if( x != pdFALSE ) portYIELD(); } while( 0 )
#define portYIELD_FROM_ISR( x ) do { if( x != pdFALSE ) portYIELD( ); } while( 0 )
/* These macros should not be called directly, but through the
taskENTER_CRITICAL() and taskEXIT_CRITICAL() macros. An extra check is
performed if configASSERT() is defined to ensure an assertion handler does not
inadvertently attempt to lower the IPL when the call to assert was triggered
because the IPL value was found to be above configMAX_SYSCALL_INTERRUPT_PRIORITY
when an ISR safe FreeRTOS API function was executed. ISR safe FreeRTOS API
functions are those that end in FromISR. FreeRTOS maintains a separate
interrupt API to ensure API function and interrupt entry is as fast and as
simple as possible. */
#define portENABLE_INTERRUPTS() __asm volatile ( "MVTIPL #0" )
* taskENTER_CRITICAL() and taskEXIT_CRITICAL() macros. An extra check is
* performed if configASSERT() is defined to ensure an assertion handler does not
* inadvertently attempt to lower the IPL when the call to assert was triggered
* because the IPL value was found to be above configMAX_SYSCALL_INTERRUPT_PRIORITY
* when an ISR safe FreeRTOS API function was executed. ISR safe FreeRTOS API
* functions are those that end in FromISR. FreeRTOS maintains a separate
* interrupt API to ensure API function and interrupt entry is as fast and as
* simple as possible. */
#define portENABLE_INTERRUPTS() __asm volatile ( "MVTIPL #0" )
#ifdef configASSERT
#define portASSERT_IF_INTERRUPT_PRIORITY_INVALID() configASSERT( ( ulPortGetIPL() <= configMAX_SYSCALL_INTERRUPT_PRIORITY ) )
#define portDISABLE_INTERRUPTS() if( ulPortGetIPL() < configMAX_SYSCALL_INTERRUPT_PRIORITY ) __asm volatile ( "MVTIPL %0" ::"i"(configMAX_SYSCALL_INTERRUPT_PRIORITY) )
#define portASSERT_IF_INTERRUPT_PRIORITY_INVALID() configASSERT( ( ulPortGetIPL() <= configMAX_SYSCALL_INTERRUPT_PRIORITY ) )
#define portDISABLE_INTERRUPTS() if( ulPortGetIPL() < configMAX_SYSCALL_INTERRUPT_PRIORITY ) __asm volatile( "MVTIPL %0" ::"i" ( configMAX_SYSCALL_INTERRUPT_PRIORITY ) )
#else
#define portDISABLE_INTERRUPTS() __asm volatile ( "MVTIPL %0" ::"i"(configMAX_SYSCALL_INTERRUPT_PRIORITY) )
#define portDISABLE_INTERRUPTS() __asm volatile ( "MVTIPL %0" ::"i" ( configMAX_SYSCALL_INTERRUPT_PRIORITY ) )
#endif
/* Critical nesting counts are stored in the TCB. */
#define portCRITICAL_NESTING_IN_TCB ( 1 )
#define portCRITICAL_NESTING_IN_TCB ( 1 )
/* The critical nesting functions defined within tasks.c. */
extern void vTaskEnterCritical( void );
@ -130,16 +130,16 @@ extern void vTaskExitCritical( void );
#define portEXIT_CRITICAL() vTaskExitCritical()
/* As this port allows interrupt nesting... */
uint32_t ulPortGetIPL( void ) __attribute__((naked));
void vPortSetIPL( uint32_t ulNewIPL ) __attribute__((naked));
#define portSET_INTERRUPT_MASK_FROM_ISR() ulPortGetIPL(); portDISABLE_INTERRUPTS()
#define portCLEAR_INTERRUPT_MASK_FROM_ISR( uxSavedInterruptStatus ) vPortSetIPL( uxSavedInterruptStatus )
uint32_t ulPortGetIPL( void ) __attribute__( ( naked ) );
void vPortSetIPL( uint32_t ulNewIPL ) __attribute__( ( naked ) );
#define portSET_INTERRUPT_MASK_FROM_ISR() ulPortGetIPL(); portDISABLE_INTERRUPTS()
#define portCLEAR_INTERRUPT_MASK_FROM_ISR( uxSavedInterruptStatus ) vPortSetIPL( uxSavedInterruptStatus )
/*-----------------------------------------------------------*/
/* Task function macros as described on the FreeRTOS.org WEB site. */
#define portTASK_FUNCTION_PROTO( vFunction, pvParameters ) void vFunction( void *pvParameters )
#define portTASK_FUNCTION( 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 )
/* *INDENT-OFF* */
#ifdef __cplusplus