Implementation of the kernels irq interface. More...

Detailed Description

Implementation of the kernels irq interface.

Author: Gunar Schorcht gunar.nosp@m.@sch.nosp@m.orcht.nosp@m..net

Definition in file irq_arch_common.h.

#include "irq.h"
#include "sched.h"
#include "thread.h"

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Variables
volatile uint32_t	irq_interrupt_nesting
	Indicates the interrupt nesting depth.

Macros to enter and exit an ISR
Since all the stuff is done in `_frxt_int_enter` and `_frxt_int_exit`, these macros are doing nothing and are kept only for source code compatibility.
#define	irq_isr_enter()

#define	irq_isr_exit()

Macros to enter and exit a critical region
Note : since they use a local variable they can be used only in same function
#define	critical_enter() int _irq_state = irq_disable()

#define	critical_exit() irq_restore(_irq_state)

Macros to enter and exit a critical region with state variable
#define	critical_enter_var(m) m = irq_disable()

#define	critical_exit_var(m) irq_restore(m)

Macro Definition Documentation

◆ critical_enter

#define critical_enter ( ) int _irq_state = irq_disable()

Definition at line 58 of file irq_arch_common.h.

◆ critical_enter_var

#define critical_enter_var ( m ) m = irq_disable()

Definition at line 66 of file irq_arch_common.h.

◆ critical_exit

#define critical_exit ( ) irq_restore(_irq_state)

Definition at line 59 of file irq_arch_common.h.

◆ critical_exit_var

#define critical_exit_var ( m ) irq_restore(m)

Definition at line 67 of file irq_arch_common.h.

◆ irq_isr_enter

#define irq_isr_enter ( )

Definition at line 47 of file irq_arch_common.h.

◆ irq_isr_exit

#define irq_isr_exit ( )

Definition at line 48 of file irq_arch_common.h.

Variable Documentation

◆ irq_interrupt_nesting

volatile uint32_t irq_interrupt_nesting

extern

Indicates the interrupt nesting depth.

The variable is incremented on entry into and decremented on exit from an ISR.