Control Register 4 (CR4) Extensions
3-17
18524C/0—Nov1996
AMD-K5 Processor Technical Reference Manual
Table 3-5B.
Instructions that Modify the IF or VIF Flags—Protected Mode
TYPE
PE
VM
VME
PVI
IOPL
Handler
CPL
GP(0)
IF
VIF
CLI
1
0
—
0
≥
CPL
—
No
IF
←
0
—
CLI
1
0
—
0
<
CPL
—
Yes
—
—
STI
1
0
—
0
≥
CPL
—
No
IF
←
1
—
STI
1
0
—
0
<
CPL
—
Yes
—
—
PUSHF
1
0
—
0
≥
CPL
—
No
Pushed
—
PUSHF
1
0
—
0
<
CPL
—
No
Pushed
—
PUSHFD
1
0
—
0
≥
CPL
—
No
Pushed
Pushed
PUSHFD
1
0
—
0
<
CPL
—
No
Pushed
Pushed
POPF
1
0
—
0
≥
CPL
—
No
Popped
—
POPF
1
0
—
0
<
CPL
—
No
Not Popped
—
POPFD
1
0
—
0
≥
CPL
—
No
Popped
Not Popped
POPFD
1
0
—
0
<
CPL
—
No
Not Popped Not Popped
IRET
1
0
—
0
—
=
0
No
Popped
—
IRET
1
0
—
0
≥
CPL
>
0
No
1
Popped
—
IRET
1
0
—
0
<
CPL
>
0
No
1
Not Popped
—
IRETD
1
0
—
0
—
=
0
No
Popped
Popped
IRETD
1
0
—
0
≥
CPL
>
0
No
1
Popped
Not Popped
IRETD
1
0
—
0
<
CPL
>
0
No
1
Not Popped Not Popped
Notes:
1. GP(0) if the CPL of the task executing IRETD is greater than the CPL of the task returned to.
— Not applicable.
Summary of Contents for AMD-K5
Page 1: ...AMD K5 Processor Technical Reference Manual TM...
Page 10: ...x AMD K5 Processor Technical Reference Manual 18524C 0 Nov1996...
Page 24: ...1 4 Overview AMD K5 Processor Technical Reference Manual 18524C 0 Nov1996...
Page 54: ...2 30 Internal Architecture AMD K5 Processor Technical Reference Manual 18524C 0 Nov1996...
Page 116: ...4 26 Performance AMD K5 Processor Technical Reference Manual 18524C 0 Nov1996...
Page 356: ...6 44 System Design AMD K5 Processor Technical Reference Manual 18524C 0 Nov1996...
Page 380: ...7 24 Test and Debug AMD K5 Processor Technical Reference Manual 18524C 0 Nov1996...
Page 396: ...A 16 AMD K5 Processor Technical Reference Manual 18524C 0 Nov1996...
Page 406: ...I 10 Index AMD K5 Processor Technical Reference Manual 18524C 0 Nov1996...