INTRP Namespace Reference

interrupt namespace More...

Classes
union	DescriptorEntry
	Exception and interrupt gate descriptor entry. More...
class	Mask
	Disables interrupt on construction, restores previous interrupt mask on scope exit. More...

Enumerations
enum	IVT : uint8_t {   RESERVED_START = 0x0, DIV_0_FAULT = RESERVED_START, DEBUG_TRAP = 0x1, NMI_INTERRUPT = 0x2,   BREAKPOINT_TRAP = 0x3, OVERFLOW_TRAP = 0x4, OUT_OF_BOUNDS_FAULT = 0x5, INVALID_OPCODE_FAULT = 0x6,   NO_MATH_COP_FAULT = 0x7, DOUBLE_FAULT = 0x8, COP_SEG_OVERRUN_FAULT = 0x9, INVALID_TSS_FAULT = 0x0A,   SEG_NOT_PRESENT_FAULT = 0x0B, STACK_SEG_FAULT = 0x0C, GEN_PROTECTION_FAULT = 0x0D, PAGE_FAULT = 0x0E,   RESERVED = 0x0F, MATH_FAULT = 0x10, ALIGNMENT_CHECK_FAULT = 0x11, MACHINE_CHECK_ABORT = 0x12,   SIMD_FP_XF_FAULT = 0x13, RESERVED_END = 0x1F, PIC1_OFFSET = 0x20, USER_DEFINED_START = PIC1_OFFSET,   TIMER = 0x20, KEYBOARD = 0x21, PIC2_CASCADE = 0x22, SERIAL2 = 0x23,   SERIAL1 = 0x24, PARALLEL2 = 0x25, DISKETTE = 0x26, PARALLEL1 = 0x27,   PIC2_OFFSET = 0x28, CMOS = 0x28, CGA = 0x29, RESERVED1 = 0x2A,   RESERVED2 = 0x2B, PS2 = 0x2C, FPU = 0x2D, HARDDISK = 0x2E,   RESERVED3 = 0x2F, USER_DEFINED_END = 0xFF }

Functions
void	RegisterHandler (DescriptorEntry IdtTable[], size_t Idx, func_ptr Handler)
	Creates interrupt descriptor entries in idt_table, and loads into CPU. More...
void	UnhandledException ()
	default unhandled exception handler More...
void	TimerInterruptHandler ()
	Timer interrupt handler. More...
void	PageFaultHandler ()
	Page fault handler. More...
void	UnhandledInterrupt ()
	default unhandled interrupt handler More...
void	SetExceptionHandler (DescriptorEntry IdtTable[])
	Installs default exception handler to all exceptions. More...
void	SetInterruptHandler (DescriptorEntry IdtTable[])
	Installs default interrupt handler to all interrupts. More...
void	Load_lidt (void *lidtAddress, uint16_t LimitUse)
	assembly instruction to load idt table to CPU More...
void	Install_idt ()
	Assigns exception and interrupt handler to idt_table, and load to CPU. More...

Variables
const uint16_t	IDT_ENTRIES = 256
DescriptorEntry	idt_table [IDT_ENTRIES]

Detailed Description

interrupt namespace

Enumeration Type Documentation

IVT

enum INTRP::IVT : uint8_t

Enumerator
RESERVED_START	0x0
DIV_0_FAULT	0x0
DEBUG_TRAP	0x1
NMI_INTERRUPT	0x2
BREAKPOINT_TRAP	0x3
OVERFLOW_TRAP	0x4
OUT_OF_BOUNDS_FAULT	0x5
INVALID_OPCODE_FAULT	0x6
NO_MATH_COP_FAULT	0x7
DOUBLE_FAULT	0x8
COP_SEG_OVERRUN_FAULT	0x9
INVALID_TSS_FAULT	0x0A
SEG_NOT_PRESENT_FAULT	0x0B
STACK_SEG_FAULT	0x0C
GEN_PROTECTION_FAULT	0x0D
PAGE_FAULT	0x0E
RESERVED	0x0F
MATH_FAULT	0x10
ALIGNMENT_CHECK_FAULT	0x11
MACHINE_CHECK_ABORT	0x12
SIMD_FP_XF_FAULT	0x13
RESERVED_END	0x1F
PIC1_OFFSET	0x20
USER_DEFINED_START
TIMER
KEYBOARD
PIC2_CASCADE
SERIAL2
SERIAL1
PARALLEL2
DISKETTE
PARALLEL1
PIC2_OFFSET	0x28
CMOS
CGA
RESERVED1
RESERVED2
PS2
FPU
HARDDISK
RESERVED3
USER_DEFINED_END	0xFF

Definition at line 18 of file interrupt.h.

Function Documentation

Install_idt()

void INTRP::Install_idt

(

)

Assigns exception and interrupt handler to idt_table, and load to CPU.

Definition at line 116 of file interrupt.cpp.

Load_lidt()

void INTRP::Load_lidt ( void *  lidtAddress, uint16_t  LimitUse  )

inline

assembly instruction to load idt table to CPU

Parameters

lidtAddress
LimitUse

Definition at line 98 of file interrupt.cpp.

PageFaultHandler()

void INTRP::PageFaultHandler

(

)

Page fault handler.

Definition at line 58 of file interrupt.cpp.

RegisterHandler()

void INTRP::RegisterHandler	(	DescriptorEntry	IdtTable[],
		size_t	Idx,
		func_ptr	Handler
	)

Creates interrupt descriptor entries in idt_table, and loads into CPU.

Installing exception or interrupt handler by mapping handler address to idt_table

Parameters

[out]	IdtTable	to be loaded into CPU later
[in]	Idx	into IdtTable for corresponding exception/interrupt number
[in]	Handler	address of exception/interrupt handler

Definition at line 29 of file interrupt.cpp.

SetExceptionHandler()

void INTRP::SetExceptionHandler

(

DescriptorEntry

IdtTable[]

)

Installs default exception handler to all exceptions.

Parameters

IdtTable

Definition at line 75 of file interrupt.cpp.

SetInterruptHandler()

void INTRP::SetInterruptHandler

(

DescriptorEntry

IdtTable[]

)

Installs default interrupt handler to all interrupts.

Parameters

IdtTable

Definition at line 86 of file interrupt.cpp.

TimerInterruptHandler()

void INTRP::TimerInterruptHandler

(

)

Timer interrupt handler.

Definition at line 48 of file interrupt.cpp.

UnhandledException()

void INTRP::UnhandledException

(

)

default unhandled exception handler

Definition at line 40 of file interrupt.cpp.

UnhandledInterrupt()

void INTRP::UnhandledInterrupt

(

)

default unhandled interrupt handler

Definition at line 66 of file interrupt.cpp.

Variable Documentation

IDT_ENTRIES

const uint16_t INTRP::IDT_ENTRIES = 256

Definition at line 71 of file interrupt.h.

idt_table

DescriptorEntry INTRP::idt_table

Definition at line 20 of file interrupt.cpp.