cpu.h File Reference

PowerPC CPU Department Source. More...

#include <rtems/score/types.h>
#include <rtems/score/powerpc.h>
#include <rtems/powerpc/registers.h>
#include <string.h>

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Data Structures
struct	ppc_context
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...
struct	CPU_Exception_frame
	The set of registers that specifies the complete processor state. More...

Macros
#define	CPU_INLINE_ENABLE_DISPATCH   FALSE
#define	CPU_PROVIDES_IDLE_THREAD_BODY   FALSE
#define	CPU_STACK_GROWS_UP   FALSE
#define	CPU_STRUCTURE_ALIGNMENT   __attribute__ ((aligned (PPC_STRUCTURE_ALIGNMENT)))
#define	CPU_TIMESTAMP_USE_STRUCT_TIMESPEC   TRUE
#define	CPU_BIG_ENDIAN   FALSE
#define	CPU_LITTLE_ENDIAN   TRUE
#define	CPU_HARDWARE_FP   FALSE
#define	CPU_SOFTWARE_FP   FALSE
#define	CPU_ALL_TASKS_ARE_FP   CPU_HARDWARE_FP
#define	CPU_IDLE_TASK_IS_FP   FALSE
#define	CPU_PER_CPU_CONTROL_SIZE   0
#define	PPC_GPR_TYPE   uint32_t
#define	PPC_GPR_SIZE   4
#define	PPC_GPR_LOAD   lwz
#define	PPC_GPR_STORE   stw
#define	_CPU_Context_Get_SP(_context)   ppc_get_context(_context)->gpr1
#define	PPC_CONTEXT_OFFSET_GPR1   (PPC_DEFAULT_CACHE_LINE_SIZE + 0)
#define	PPC_CONTEXT_OFFSET_MSR   (PPC_DEFAULT_CACHE_LINE_SIZE + 4)
#define	PPC_CONTEXT_OFFSET_LR   (PPC_DEFAULT_CACHE_LINE_SIZE + 8)
#define	PPC_CONTEXT_OFFSET_CR   (PPC_DEFAULT_CACHE_LINE_SIZE + 12)
#define	PPC_CONTEXT_GPR_OFFSET(gpr)   (((gpr) - 14) * PPC_GPR_SIZE + PPC_DEFAULT_CACHE_LINE_SIZE + 16)
#define	PPC_CONTEXT_OFFSET_GPR14   PPC_CONTEXT_GPR_OFFSET( 14 )
#define	PPC_CONTEXT_OFFSET_GPR15   PPC_CONTEXT_GPR_OFFSET( 15 )
#define	PPC_CONTEXT_OFFSET_GPR16   PPC_CONTEXT_GPR_OFFSET( 16 )
#define	PPC_CONTEXT_OFFSET_GPR17   PPC_CONTEXT_GPR_OFFSET( 17 )
#define	PPC_CONTEXT_OFFSET_GPR18   PPC_CONTEXT_GPR_OFFSET( 18 )
#define	PPC_CONTEXT_OFFSET_GPR19   PPC_CONTEXT_GPR_OFFSET( 19 )
#define	PPC_CONTEXT_OFFSET_GPR20   PPC_CONTEXT_GPR_OFFSET( 20 )
#define	PPC_CONTEXT_OFFSET_GPR21   PPC_CONTEXT_GPR_OFFSET( 21 )
#define	PPC_CONTEXT_OFFSET_GPR22   PPC_CONTEXT_GPR_OFFSET( 22 )
#define	PPC_CONTEXT_OFFSET_GPR23   PPC_CONTEXT_GPR_OFFSET( 23 )
#define	PPC_CONTEXT_OFFSET_GPR24   PPC_CONTEXT_GPR_OFFSET( 24 )
#define	PPC_CONTEXT_OFFSET_GPR25   PPC_CONTEXT_GPR_OFFSET( 25 )
#define	PPC_CONTEXT_OFFSET_GPR26   PPC_CONTEXT_GPR_OFFSET( 26 )
#define	PPC_CONTEXT_OFFSET_GPR27   PPC_CONTEXT_GPR_OFFSET( 27 )
#define	PPC_CONTEXT_OFFSET_GPR28   PPC_CONTEXT_GPR_OFFSET( 28 )
#define	PPC_CONTEXT_OFFSET_GPR29   PPC_CONTEXT_GPR_OFFSET( 29 )
#define	PPC_CONTEXT_OFFSET_GPR30   PPC_CONTEXT_GPR_OFFSET( 30 )
#define	PPC_CONTEXT_OFFSET_GPR31   PPC_CONTEXT_GPR_OFFSET( 31 )
#define	PPC_CONTEXT_OFFSET_GPR2   PPC_CONTEXT_GPR_OFFSET( 32 )
#define	PPC_CONTEXT_OFFSET_F(f)   ( ( ( f ) - 14 ) * 8 + PPC_DEFAULT_CACHE_LINE_SIZE + 96 )
#define	PPC_CONTEXT_VOLATILE_SIZE   (PPC_CONTEXT_GPR_OFFSET( 32 ) + 4)
#define	CPU_SIMPLE_VECTORED_INTERRUPTS   FALSE
#define	CPU_HAS_SOFTWARE_INTERRUPT_STACK   TRUE
#define	CPU_HAS_HARDWARE_INTERRUPT_STACK   FALSE
#define	CPU_ALLOCATE_INTERRUPT_STACK   TRUE
#define	CPU_ISR_PASSES_FRAME_POINTER   0
#define	CPU_USE_DEFERRED_FP_SWITCH   FALSE
#define	CPU_MODES_INTERRUPT_LEVEL   0x00000001 /* interrupt level in mode */
#define	CPU_MODES_INTERRUPT_MASK   0x00000001 /* interrupt level in mode */
#define	CPU_CONTEXT_FP_SIZE   sizeof( Context_Control_fp )
#define	CPU_STACK_CHECK_SIZE   (128)
#define	CPU_MPCI_RECEIVE_SERVER_EXTRA_STACK   0
#define	CPU_PROVIDES_ISR_IS_IN_PROGRESS   FALSE
#define	_CPU_Fatal_halt(_source, _error)   _BSP_Fatal_error(_error)
#define	CPU_STACK_MINIMUM_SIZE   (1024*8)
#define	CPU_SIZEOF_POINTER   4
#define	CPU_ALIGNMENT   (PPC_ALIGNMENT)
#define	CPU_HEAP_ALIGNMENT   (PPC_ALIGNMENT)
#define	CPU_PARTITION_ALIGNMENT   (PPC_ALIGNMENT)
#define	CPU_STACK_ALIGNMENT   (PPC_STACK_ALIGNMENT)
#define	CPU_swap_u16(value)   (((value&0xff) << 8) | ((value >> 8)&0xff))
#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)   memset( *(_destination), 0, sizeof( **(_destination) ) )
#define	_CPU_Bitfield_Find_first_bit(_value, _output)
#define	_CPU_Priority_Mask(_bit_number)   ( 0x80000000 >> (_bit_number) )
#define	_CPU_Priority_bits_index(_priority)   (_priority)

Typedefs
typedef struct CPU_Interrupt_frame	CPU_Interrupt_frame
typedef uint32_t	CPU_Counter_ticks

Functions
void	BSP_panic (char *)
void	_BSP_Fatal_error (unsigned int)
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_Initialize (void)
	CPU initialization. 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_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_Context_volatile_clobber (uintptr_t pattern)
	Clobbers all volatile registers with values derived from the pattern parameter. More...
void	_CPU_Context_validate (uintptr_t pattern)
	Initializes and validates the CPU context with values derived from the pattern parameter. More...
void	_CPU_Exception_frame_print (const CPU_Exception_frame *frame)
	Prints the exception frame via printk(). More...
void	_CPU_Initialize_altivec (void)
void	_CPU_Context_switch_altivec (ppc_context *from, ppc_context *to)
void	_CPU_Context_restore_altivec (ppc_context *ctxt)
void	_CPU_Context_initialize_altivec (ppc_context *ctxt)
void	_CPU_Fatal_error (uint32_t _error)

Detailed Description

PowerPC CPU Department Source.

Macro Definition Documentation

_CPU_Bitfield_Find_first_bit

#define _CPU_Bitfield_Find_first_bit	(		_value,
			_output
	)

Value:

{ \
    __asm__ volatile ("cntlzw %0, %1" : "=r" ((_output)), "=r" ((_value)) : \
                  "1" ((_value))); \
  }