cpu.c File Reference

Blackfin CPU Dependent Source. More...

#include <rtems/score/isr.h>
#include <rtems/score/wkspace.h>
#include <rtems/score/bfin.h>
#include <rtems/bfin/bfin.h>

Functions
void	_ISR15_Handler (void)
void	_CPU_Emulation_handler (void)
void	_CPU_Reset_handler (void)
void	_CPU_NMI_handler (void)
void	_CPU_Exception_handler (void)
void	_CPU_Unhandled_Interrupt_handler (void)
void	_CPU_Initialize (void)
	CPU initialization. More...
uint32_t	_CPU_ISR_Get_level (void)
	Returns the interrupt level of the executing thread. More...
void	_CPU_ISR_install_raw_handler (uint32_t vector, CPU_ISR_raw_handler new_handler, CPU_ISR_raw_handler *old_handler)
	SPARC specific raw ISR installer. More...
void	_CPU_ISR_install_vector (uint32_t vector, CPU_ISR_handler new_handler, CPU_ISR_handler *old_handler)
	SPARC specific RTEMS ISR installer. More...
void *	_CPU_Thread_Idle_body (uintptr_t ignored)
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)

Detailed Description

Blackfin CPU Dependent Source.

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

Parameters

[in]	the_context	points to the context area
[in]	stack_base	is the low address of the allocated stack area
[in]	size	is the size of the stack area in bytes
[in]	new_level	is the interrupt level for the task
[in]	entry_point	is the task's entry point
[in]	is_fp	is set to TRUE if the task is a floating point task
[in]	tls_area	is the thread-local storage (TLS) area

NOTE: Implemented as a subroutine for the SPARC port.

_CPU_ISR_install_raw_handler()

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

SPARC specific raw ISR installer.

This routine installs new_handler to be directly called from the trap table.

Parameters

[in]	vector	is the vector number
[in]	new_handler	is the new ISR handler
[in]	old_handler	will contain the old ISR handler