206
Instruction Dispatch and Execution Resources
AMD Athlon™ Processor x86 Code Optimization
22007E/0—November 1999
SUB reg8, mreg8
2Ah
11-xxx-xxx
DirectPath
SUB reg8, mem8
2Ah
mm-xxx-xxx
DirectPath
SUB reg16/32, mreg16/32
2Bh
11-xxx-xxx
DirectPath
SUB reg16/32, mem16/32
2Bh
mm-xxx-xxx
DirectPath
SUB AL, imm8
2Ch
DirectPath
SUB EAX, imm16/32
2Dh
DirectPath
SUB mreg8, imm8
80h
11-101-xxx
DirectPath
SUB mem8, imm8
80h
mm-101-xxx DirectPath
SUB mreg16/32, imm16/32
81h
11-101-xxx
DirectPath
SUB mem16/32, imm16/32
81h
mm-101-xxx DirectPath
SUB mreg16/32, imm8 (sign extended)
83h
11-101-xxx
DirectPath
SUB mem16/32, imm8 (sign extended)
83h
mm-101-xxx DirectPath
SYSCALL
0Fh
05h
VectorPath
SYSENTER
0Fh
34h
VectorPath
SYSEXIT
0Fh
35h
VectorPath
SYSRET
0Fh
07h
VectorPath
TEST mreg8, reg8
84h
11-xxx-xxx
DirectPath
TEST mem8, reg8
84h
mm-xxx-xxx
DirectPath
TEST mreg16/32, reg16/32
85h
11-xxx-xxx
DirectPath
TEST mem16/32, reg16/32
85h
mm-xxx-xxx
DirectPath
TEST AL, imm8
A8h
DirectPath
TEST EAX, imm16/32
A9h
DirectPath
TEST mreg8, imm8
F6h
11-000-xxx
DirectPath
TEST mem8, imm8
F6h
mm-000-xxx DirectPath
TEST mreg8, imm16/32
F7h
11-000-xxx
DirectPath
TEST mem8, imm16/32
F7h
mm-000-xxx DirectPath
VERR mreg16
0Fh
00h
11-100-xxx
VectorPath
VERR mem16
0Fh
00h
mm-100-xxx VectorPath
VERW mreg16
0Fh
00h
11-101-xxx
VectorPath
VERW mem16
0Fh
00h
mm-101-xxx VectorPath
WAIT
9Bh
DirectPath
WBINVD
0Fh
09h
VectorPath
WRMSR
0Fh
30h
VectorPath
Table 19. Integer Instructions (Continued)
Instruction Mnemonic
First
Byte
Second
Byte
ModR/M
Byte
Decode
Type
Summary of Contents for Athlon Processor x86
Page 1: ...AMD Athlon Processor x86 Code Optimization Guide TM...
Page 12: ...xii List of Figures AMD Athlon Processor x86 Code Optimization 22007E 0 November 1999...
Page 16: ...xvi Revision History AMD Athlon Processor x86 Code Optimization 22007E 0 November 1999...
Page 202: ...186 Page Attribute Table PAT AMD Athlon Processor x86 Code Optimization 22007E 0 November 1999...
Page 252: ...236 VectorPath Instructions AMD Athlon Processor x86 Code Optimization 22007E 0 November 1999...
Page 256: ...240 Index AMD Athlon Processor x86 Code Optimization 22007E 0 November 1999...