cpu.h File Reference

Motorola M68K CPU Dependent Source. More...

#include <rtems/score/basedefs.h>
#include <rtems/score/m68k.h>

Go to the source code of this file.

Data Structures
struct	Context_Control
	Thread register context. More...
struct	Context_Control_fp
	SPARC basic context. More...
struct	CPU_Interrupt_frame
	Interrupt stack frame (ISF). More...
struct	CPU_Exception_frame
	The set of registers that specifies the complete processor state. More...

Macros
#define	CPU_SIMPLE_VECTORED_INTERRUPTS   TRUE
#define	CPU_ISR_PASSES_FRAME_POINTER   FALSE
#define	CPU_HARDWARE_FP   FALSE
#define	CPU_SOFTWARE_FP   FALSE
#define	CPU_ALL_TASKS_ARE_FP   FALSE
#define	CPU_IDLE_TASK_IS_FP   FALSE
#define	CPU_USE_DEFERRED_FP_SWITCH   TRUE
#define	CPU_ENABLE_ROBUST_THREAD_DISPATCH   FALSE
#define	CPU_STACK_GROWS_UP   FALSE
#define	CPU_CACHE_LINE_BYTES   16
#define	CPU_STRUCTURE_ALIGNMENT   RTEMS_ALIGNED( CPU_CACHE_LINE_BYTES )
#define	CPU_MAXIMUM_PROCESSORS   32
#define	M68K_FP_STATE_SIZE   216
#define	_CPU_Context_Get_SP(_context)
#define	_CPU_Context_Initialize_fp(_fp_area)
#define	_CPU_Context_Initialize_fp(_fp_area)
#define	CPU_MODES_INTERRUPT_MASK   0x00000007
#define	CPU_CONTEXT_FP_SIZE   sizeof( Context_Control_fp )
#define	CPU_MPCI_RECEIVE_SERVER_EXTRA_STACK   1024
#define	CPU_INTERRUPT_NUMBER_OF_VECTORS   256
#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   M68K_CPU_STACK_MINIMUM_SIZE
#define	CPU_PRIORITY_MAXIMUM   M68K_CPU_PRIORITY_MAXIMUM
#define	CPU_SIZEOF_POINTER   4
#define	CPU_ALIGNMENT   4
#define	CPU_HEAP_ALIGNMENT   CPU_ALIGNMENT
#define	CPU_STACK_ALIGNMENT   CPU_ALIGNMENT
#define	CPU_INTERRUPT_STACK_ALIGNMENT   CPU_CACHE_LINE_BYTES
#define	_CPU_ISR_Disable(_level)
#define	_CPU_ISR_Enable(_level)
#define	_CPU_ISR_Flash(_level)
#define	_CPU_ISR_Set_level(_newlevel)
#define	CPU_USE_LIBC_INIT_FINI_ARRAY   FALSE
#define	CPU_USE_GENERIC_BITFIELD_CODE   FALSE
#define	_CPU_Bitfield_Find_first_bit(_value, _output)
#define	_CPU_Priority_Mask(_bit_number)
#define	_CPU_Priority_bits_index(_priority)

Functions
uint32_t	_CPU_ISR_Get_level (void)
void	_CPU_Context_Initialize (Context_Control *the_context, void *stack_area_begin, size_t stack_area_size, uint32_t new_level, void(*entry_point)(void), bool is_fp, void *tls_area)
RTEMS_NO_RETURN void *	_CPU_Thread_Idle_body (uintptr_t ignored)
void	_CPU_Initialize (void)
	CPU initialization.
void	_CPU_ISR_install_raw_handler (uint32_t vector, CPU_ISR_raw_handler new_handler, CPU_ISR_raw_handler *old_handler)
void	_CPU_ISR_install_vector (uint32_t vector, CPU_ISR_handler new_handler, CPU_ISR_handler *old_handler)
void	_CPU_Context_switch (Context_Control *run, Context_Control *heir)
	CPU switch context.
RTEMS_NO_RETURN void	_CPU_Context_Restart_self (Context_Control *the_context)
void	_CPU_Context_save_fp (Context_Control_fp **fp_context_ptr)
void	_CPU_Context_restore_fp (Context_Control_fp **fp_context_ptr)
void	_CPU_Exception_frame_print (const CPU_Exception_frame *frame)
uint32_t	_CPU_Counter_frequency (void)
CPU_Counter_ticks	_CPU_Counter_read (void)

Variables
void *	_VBR
const unsigned char	_CPU_m68k_BFFFO_table [256]

Detailed Description

Motorola M68K CPU Dependent Source.

Macro Definition Documentation

_CPU_Bitfield_Find_first_bit

#define _CPU_Bitfield_Find_first_bit	(		_value,
			_output )

Value:

{ \
  int dumby; \
  \
  __asm__ volatile ( "   move.w  %2,%1\n"        \
     "   lsr.w   #8,%1\n"        \
     "   beq.s   1f\n"           \
     "   move.b  (%3,%1.w),%0\n" \
     "   and.l   #0x000000ff,%0\n"\
     "   bra.s   0f\n"           \
     "1: moveq.l #8,%0\n"        \
     "   add.b   (%3,%2.w),%0\n" \
     "0:\n"                      \
     : "=&d" ((_output)), "=&d" ((dumby)) \
     : "d" ((_value)), "ao" ((_CPU_m68k_BFFFO_table)) \
     : "cc" ) ; \
}

_CPU_Context_Get_SP

#define _CPU_Context_Get_SP

(

_context

)

Value:

(_context)->a7_msp

_CPU_Context_Initialize_fp [1/2]

#define _CPU_Context_Initialize_fp

(

_fp_area

)

Value:

{ \
  uint32_t *_fp_context = (uint32_t *) \
    ( (uintptr_t) *( _fp_area ) + CPU_CONTEXT_FP_SIZE - 4 ); \
  *(--(_fp_context)) = 0; \
  *(_fp_area) = (void *)(_fp_context); \
}

_CPU_Context_Initialize_fp [2/2]

#define _CPU_Context_Initialize_fp

(

_fp_area

)

Value:

{ \
  Context_Control_fp *_fp; \
  _fp = *(Context_Control_fp **)_fp_area; \
  _fp->_exception_bits = 0; \
  _fp->_trap_enable_bits = 0; \
  _fp->_sticky_bits = 0; \
  _fp->_rounding_mode = 0;    \
  _fp->_format = 0;           \
  _fp->_last_operation = 0;   \
  _fp->_operand1.df = 0; \
  _fp->_operand2.df = 0; \
}

_CPU_ISR_Disable

#define _CPU_ISR_Disable

(

_level

)

Value:

m68k_disable_interrupts( _level )

_CPU_ISR_Enable

#define _CPU_ISR_Enable

(

_level

)

Value:

m68k_enable_interrupts( _level )

_CPU_ISR_Flash

#define _CPU_ISR_Flash

(

_level

)

Value:

m68k_flash_interrupts( _level )

_CPU_ISR_Set_level

#define _CPU_ISR_Set_level

(

_newlevel

)

Value:

m68k_set_interrupt_level( _newlevel )

_CPU_Priority_bits_index

#define _CPU_Priority_bits_index

(

_priority

)

Value:

(_priority)

_CPU_Priority_Mask

#define _CPU_Priority_Mask

(

_bit_number

)

Value:

( 0x8000 >> (_bit_number) )