Intel AVR CPU Department Source. More...

#include <rtems/score/types.h>
#include <rtems/score/avr.h>
#include <avr/common.h>

Include dependency graph for score/cpu/avr/rtems/score/cpu.h:

This graph shows which files directly or indirectly include this file:

Data Structures
struct	CPU_Per_CPU_control
	The CPU specific per-CPU control. More...

struct	Context_Control
	This defines the minimal set of integer and processor state registers that must be saved during a voluntary context switch from one thread to another. More...

struct	Context_Control_fp
	This defines the complete set of floating point registers that must be saved during any context switch from one thread to another. More...

struct	CPU_Interrupt_frame
	This defines the set of integer and processor state registers that must be saved during an interrupt. More...

Macros
#define	RTEMS_USE_16_BIT_OBJECT

#define	CPU_INLINE_ENABLE_DISPATCH FALSE

#define	CPU_HAS_SOFTWARE_INTERRUPT_STACK FALSE

#define	CPU_HAS_HARDWARE_INTERRUPT_STACK TRUE

#define	CPU_ALLOCATE_INTERRUPT_STACK TRUE

#define	CPU_ISR_PASSES_FRAME_POINTER 0

#define	CPU_SIMPLE_VECTORED_INTERRUPTS TRUE

#define	CPU_HARDWARE_FP FALSE

#define	CPU_SOFTWARE_FP FALSE

#define	CPU_ALL_TASKS_ARE_FP TRUE

#define	CPU_IDLE_TASK_IS_FP FALSE

#define	CPU_USE_DEFERRED_FP_SWITCH TRUE

#define	CPU_PROVIDES_IDLE_THREAD_BODY TRUE

#define	CPU_STACK_GROWS_UP FALSE

#define	CPU_STRUCTURE_ALIGNMENT

#define	CPU_TIMESTAMP_USE_STRUCT_TIMESPEC TRUE

#define	CPU_BIG_ENDIAN TRUE

#define	CPU_LITTLE_ENDIAN FALSE

#define	CPU_MODES_INTERRUPT_MASK 0x00000001

#define	CPU_PER_CPU_CONTROL_SIZE 0

#define	_CPU_Context_Get_SP(_context) (_context)->stack_pointer

#define	CPU_CONTEXT_FP_SIZE sizeof( Context_Control_fp )

#define	CPU_MPCI_RECEIVE_SERVER_EXTRA_STACK 0

#define	CPU_INTERRUPT_NUMBER_OF_VECTORS 32

#define	CPU_INTERRUPT_MAXIMUM_VECTOR_NUMBER (CPU_INTERRUPT_NUMBER_OF_VECTORS - 1)

#define	CPU_PROVIDES_ISR_IS_IN_PROGRESS FALSE

#define	CPU_STACK_MINIMUM_SIZE 512

#define	CPU_PRIORITY_MAXIMUM 15

#define	CPU_SIZEOF_POINTER 2

#define	CPU_ALIGNMENT 4

#define	CPU_HEAP_ALIGNMENT CPU_ALIGNMENT

#define	CPU_PARTITION_ALIGNMENT CPU_ALIGNMENT

#define	CPU_STACK_ALIGNMENT 0

#define	_CPU_Initialize_vectors()

#define	_CPU_ISR_Disable(_isr_cookie)

#define	_CPU_ISR_Enable(_isr_cookie)

#define	_CPU_ISR_Flash(_isr_cookie)

#define	_CPU_Context_Restart_self(_the_context) _CPU_Context_restore( _the_context );

#define	_CPU_Context_Fp_start(_base, _offset) ( (void *) _Addresses_Add_offset( (_base), (_offset) ) )

#define	_CPU_Context_Initialize_fp(_destination)

#define	_CPU_Fatal_halt(_source, _error)

#define	CPU_USE_GENERIC_BITFIELD_CODE TRUE

#define	CPU_USE_GENERIC_BITFIELD_DATA TRUE

#define	_CPU_Bitfield_Find_first_bit(_value, _output)

#define	_CPU_Priority_Mask(_bit_number) ( 1 << (_bit_number) )

#define	_CPU_Priority_bits_index(_priority) (_priority)

#define	CPU_swap_u16(value) (((value&0xff) << 8) \| ((value >> 8)&0xff))

Typedefs
typedef CPU_Interrupt_frame	CPU_Exception_frame

typedef uint32_t	CPU_Counter_ticks

Functions
uint32_t	_CPU_ISR_Get_level (void)
	Return the current interrupt disable level for this task in the format used by the interrupt level portion of the task mode. More...

void	context_initialize (unsigned short *context, unsigned short stack_add, unsigned short entry_point)

void	_CPU_Context_Initialize (Context_Control the_context, uint32_t stack_base, uint32_t size, uint32_t new_level, void entry_point, bool is_fp, void tls_area)
	Initialize the context to a state suitable for starting a task after a context restore operation. More...

void	_CPU_Push (uint16_t _SP_, uint16_t entry_point)

void	_CPU_Initialize (void)
	CPU initialization. More...

void	_CPU_ISR_install_raw_handler (uint32_t vector, proc_ptr new_handler, proc_ptr *old_handler)
	This routine installs a "raw" interrupt handler directly into the processor's vector table. More...

void	_CPU_ISR_install_vector (uint32_t vector, proc_ptr new_handler, proc_ptr *old_handler)
	This routine installs an interrupt vector. More...

void	_CPU_Install_interrupt_stack (void)
	This routine installs the hardware interrupt stack pointer. More...

void *	_CPU_Thread_Idle_body (uintptr_t ignored)

void	_CPU_Context_switch (Context_Control run, Context_Control heir)
	CPU switch context. More...

void	_CPU_Context_restore (Context_Control *new_context)
	This routine is generally used only to restart self in an efficient manner. More...

void	_CPU_Context_save_fp (Context_Control_fp **fp_context_ptr)
	This routine saves the floating point context passed to it. More...

void	_CPU_Context_restore_fp (Context_Control_fp **fp_context_ptr)
	This routine restores the floating point context passed to it. More...

void	_CPU_Exception_frame_print (const CPU_Exception_frame *frame)

CPU_Counter_ticks	_CPU_Counter_read (void)

Variables
SCORE_EXTERN Context_Control_fp	_CPU_Null_fp_context

Detailed Description

Intel AVR CPU Department Source.

This include file contains information pertaining to the AVR processor.

Macro Definition Documentation

◆ _CPU_Bitfield_Find_first_bit

#define _CPU_Bitfield_Find_first_bit	(	_value,
		_output
	)

Value:

{ \
    (_output) = 0;   /* do something to prevent warnings */ \
  }

◆ _CPU_Context_Initialize_fp

#define _CPU_Context_Initialize_fp ( _destination )

Value:

{ \
   *(*(_destination)) = _CPU_Null_fp_context; \
  }

◆ _CPU_Fatal_halt

#define _CPU_Fatal_halt	(	_source,
		_error
	)

Value:

{ \

}

◆ _CPU_ISR_Disable

#define _CPU_ISR_Disable ( _isr_cookie )

Value:

do { \
        (_isr_cookie) = SREG; \
        __asm__ volatile ("cli"::); \
  } while (0)

◆ _CPU_ISR_Enable

#define _CPU_ISR_Enable ( _isr_cookie )

Value:

do { \
        SREG  = _isr_cookie; \
        __asm__ volatile ("sei"::); \
  } while (0)

◆ _CPU_ISR_Flash

#define _CPU_ISR_Flash ( _isr_cookie )

Value:

do { \
        SREG=(_isr_cookie); \
        __asm__ volatile("sei"::); \
        (_isr_cookie) = SREG; \
        __asm__ volatile("cli"::); \
  } while (0)

Function Documentation

◆ _CPU_Context_Initialize()

void _CPU_Context_Initialize	(	Context_Control *	the_context,
		uint32_t *	stack_base,
		uint32_t	size,
		uint32_t	new_level,
		void *	entry_point,
		bool	is_fp,
		void *	tls_area
	)

Initialize the context to a state suitable for starting a task after a context restore operation.

Generally, this involves:

setting a starting address
preparing the stack
preparing the stack and frame pointers
setting the proper interrupt level in the context
initializing the floating point context

This routine generally does not set any unnecessary register in the context. The state of the "general data" registers is undefined at task start time.

Parameters

[in]	_the_context	is the context structure to be initialized
[in]	_stack_base	is the lowest physical address of this task's stack
[in]	_size	is the size of this task's stack
[in]	_isr	is the interrupt disable level
[in]	_entry_point	is the thread's entry point. This is always _Thread_Handler
[in]	_is_fp	is TRUE if the thread is to be a floating point thread. This is typically only used on CPUs where the FPU may be easily disabled by software such as on the SPARC where the PSR contains an enable FPU bit.
[in]	tls_area	is the thread-local storage (TLS) area

Port Specific Information:

This method is implemented in C on the v850.

◆ _CPU_Context_restore_fp()

void _CPU_Context_restore_fp ( Context_Control_fp ** fp_context_ptr )

This routine restores the floating point context passed to it.

Parameters

[in] fp_context_ptr is a pointer to a pointer to a floating point context area to restore

Returns: on output *fp_context_ptr will contain the address that should be used with _CPU_Context_save_fp to save this context.

Port Specific Information:

XXX document implementation including references if appropriate

◆ _CPU_Context_save_fp()

void _CPU_Context_save_fp ( Context_Control_fp ** fp_context_ptr )

This routine saves the floating point context passed to it.

Parameters

[in] fp_context_ptr is a pointer to a pointer to a floating point context area

Returns: on output *fp_context_ptr will contain the address that should be used with _CPU_Context_restore_fp to restore this context.

Port Specific Information:

XXX document implementation including references if appropriate

◆ _CPU_Install_interrupt_stack()

void _CPU_Install_interrupt_stack ( void )

This routine installs the hardware interrupt stack pointer.

NOTE: It need only be provided if CPU_HAS_HARDWARE_INTERRUPT_STACK is TRUE.

Port Specific Information:

XXX document implementation including references if appropriate

◆ _CPU_ISR_install_raw_handler()

void _CPU_ISR_install_raw_handler	(	uint32_t	vector,
		proc_ptr	new_handler,
		proc_ptr *	old_handler
	)

This routine installs a "raw" interrupt handler directly into the processor's vector table.

Parameters

[in]	vector	is the vector number
[in]	new_handler	is the raw ISR handler to install
[in]	old_handler	is the previously installed ISR Handler

Port Specific Information:

XXX document implementation including references if appropriate

Data Structures

Macros

Typedefs

Functions

Variables

Detailed Description

Macro Definition Documentation

◆ _CPU_Bitfield_Find_first_bit

◆ _CPU_Context_Initialize_fp

◆ _CPU_Fatal_halt

◆ _CPU_ISR_Disable

◆ _CPU_ISR_Enable

◆ _CPU_ISR_Flash

Function Documentation

◆ _CPU_Context_Initialize()

◆ _CPU_Context_restore_fp()

◆ _CPU_Context_save_fp()

◆ _CPU_Install_interrupt_stack()

◆ _CPU_ISR_install_raw_handler()