User's Manual

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15

,

PROTECTION

MEMORY

CPU

I'

LIT-

15

0

I

·

·

GOT LIMIT

I--

·

23

I

I

GOT BASE

1

GOTR

--

15

--

0

LOTR

I

LOT

LOT,

SELECTOR

-r

r -

-15

- - -

"0

-, I

·

I

·

I

I

·

J

r-;

I

I

LOT LIMIT

-I

23

I

l

~

..J

I

LOT BASE

I

I

LOT

n

I

PROGRAM INVISIBLE

I

I

I

CURRENl

LOT

L

________

....I

·

·

·

Figure

7-4.

Local

and

Global

Descriptor

Table

Definitions

3 2

o

T

I E

INDEX

I

0

X

T T

I

L

~

means

that

an event external

to

the program caused

the

exception

(i.e., external interrupt, single step,

processor extension error)

o

means

that

an

exception

occurred

while processing the instructloft

at

CS:IP saved

on

stack.

1 means use

lOT

and ignore

bit

2.

o means

bit

2 indicates table usage

o means use

GOT

:

1

means use LOT

'-------------_

Entry

in lOT, GOT,

or

LOT

Figure

7-5.

Error

Code

Format

(on

the

stack)

7-7

G30108

G30108