【译】x86程序员手册36-9.9异常汇总

9.9 Exception Summary 异常汇总

 

Table 9-6 summarizes the exceptions recognized by the 386.

 

Table 9-6. Exception Summary

 

Description               Interrupt   Return Address  Exception     Function That Can Generate

Number      Points to       Type          the Exception

Faulting

Instruction

 

Divide error               0          YES             FAULT         DIV, IDIV

Debug exceptions           1

Some debug exceptions are traps and some are faults.  The exception

handler can determine which has occurred by examining DR6.  (Refer to Chapter 12.)

Some debug exceptions are traps and some are faults.  The exception

handler can determine which has occurred by examining DR6.  (Refer to Chapter 12.) Any instruction

Breakpoint                 3          NO              TRAP          One-byte INT 3

Overflow                   4          NO              TRAP          INTO

Bounds check               5          YES             FAULT         BOUND

Invalid opcode             6          YES             FAULT         Any illegal instruction

Coprocessor not available  7          YES             FAULT         ESC, WAIT

Double fault               8          YES             ABORT         Any instruction that can

generate an exception

Coprocessor Segment

Overrun                    9          NO              ABORT         Any operand of an ESC

instruction that wraps around

the end of a segment.

Invalid TSS               10          YES             FAULT

An invalid-TSS fault is not restartable if it occurs during the

processing of an external interrupt.        JMP, CALL, IRET, any interrupt

Segment not present       11          YES             FAULT         Any segment-register modifier

Stack exception           12          YES             FAULT         Any memory reference thru SS

General Protection        13          YES             FAULT/ABORT

All GP faults are restartable. If the fault occurs while attempting to

vector to the handler for an external interrupt, the interrupted program is

restartable, but the interrupt may be lost.  Any memory reference or code

fetch

Page fault                14          YES             FAULT         Any memory reference or code

fetch

Coprocessor error         16          YES             FAULT

Coprocessor errors are reported as a fault on the first ESC or WAIT

instruction executed after the ESC instruction that caused the error.        ESC, WAIT

Two-byte SW Interrupt     0-255       NO              TRAP          INT n

 

9.10 Error Code Summary 错误代码汇总

 

Table 9-7 summarizes the error information that is available with each exception.

Table 9-7. Error-Code Summary

 

Description                       Interrupt     Error Code

Number

 

Divide error                       0            No

Debug exceptions                   1            No

Breakpoint                         3            No

Overflow                           4            No

Bounds check                       5            No

Invalid opcode                     6            No

Coprocessor not available          7            No

System error                       8            Yes (always 0)

Coprocessor Segment Overrun        9            No

Invalid TSS                       10            Yes

Segment not present               11            Yes

Stack exception                   12            Yes

General protection fault          13            Yes

Page fault                        14            Yes

Coprocessor error                 16            No

Two-byte SW interrupt             0-255         No