When a hardware exception occurs, the INtime kernel sends a message to the data mailbox called HW_FAULT_MBX in the format listed in this structure.

Syntax

typedef struct tagHWExceptionMsg { 
    RTHANDLE hThread; 
    RTHANDLE hProcess; 
    WORD wExceptionCode; 
    DWORD pFaultingEIP; 
    WORD wFaultingCS; 
} HWEXCEPTIONMSG, *LPHWEXCEPTIONMSG; 

Fields

hThread

Identifies the offending thread.

hProcess

Identifies the offending process.

wExceptionCode

Specifies the exception code.

pFaultingEIP

Identifies the faulting instruction's address.

wFaultingCS

Identifies the selector for the faulting instruction's code segment.

Exception Codes

Possible values of the wExceptionCode field include the following:

EH_ZERO_DIVIDE (0x8100)

Divide by 0 error

EH_SINGLE_STEP (0x8101)

Single Step Interrupt

EH_NMI (0x8102)

Non-Maskable Interrupt

EH_DEBUG_TRAP (0x8103)

Breakpoint exception

EH_OVERFLOW (0x8104)

Overflow error

EH_ARRAY_BOUNDS (0x8105)

Array bounds error

EH_INVALID_OPCODE (0x8106)

Invalid Opcode error

EH_DEVICE_NOT_PRESENT (0x8107)

NPX device not present

EH_DOUBLE_FAULT (0x8108)

Double Fault error

EH_DEVICE_ERROR (0x8109)

Unknown device error

EH_INVALID_TSS (0x810a)

Invalid TSS error

EH_SEGMENT_NOT_PRESENT (0x810b)

Segment Not Present error

EH_STACK_FAULT (0x810c)

Stack Fault error

EH_GENERAL_PROTECTION (0x810d)

General Protection error

EH_PAGE_FAULT (0x810e)

Page Fault error

EH_ALIGNMENT_CHECK (0x8111)

Alignment check error

EH_SIMD_EXCEPTION (0x8113)

SIMD (SSE/SSE2/SSE3) exception