Volume 2, Part 1: Itanium
®
Architecture-based Operating System Interaction Model with IA-32 Applications
2:259
10.6
System Memory Model
Within the Itanium System Environment, a unified memory model is presented to the
programmer. Applications and the operating system see the same 64-bit virtual
memory space and virtual addressing mechanisms regardless of the referencing
instruction set. A virtual address points to the same physical storage location from both
IA-32 and Itanium instruction sets.
RET
near: no change
far: no change
less privilege: no change
same privilege: no change
+ additional taken branch trap If PSR.tb is 1, raise a taken branch trap.
RSM
Instruction Intercept
IA-32 privileged instruction
SAHF
unchanged
SAL, SAR, SHL, SHR
SBB
SCAS
SFENCE
SETcc
SGDT, SLDT
Instruction Intercept
IA-32 privileged instruction
SHLD, SHRD
unchanged
SHUFPS, SQRTPS,
SQRTSS
SIDT
Instruction Intercept
IA-32 privileged instructions
SMSW
STC, STD
unchanged
STI
Optional System Flag
Intercept
Intercept if EFLAG.if changes state and CFLG.ii is 1
STMXCSR
unchanged
STOS
STR
Instruction Intercept
IA-32 privileged instruction
SUB
unchanged
SUBPS, SUBSS
SYSENTER, SYSEXIT
Instruction Intercept
TEST
unchanged
UCOMISS
UNPCKHPS, UNPCKLPS
UD2
Instruction Intercept
Reserved undefined opcodes
VERR, VERW
unchanged
User level instruction
WAIT
WBINVD
Instruction Intercept
IA-32 privileged instructions
WRMSR
XADD
Optional Lock Intercept
If Locks are disabled (DCR.lc is 1) and a processor
external lock transaction is required than a Lock
Intercept.
XCHG
XLAT, XLATB
unchanged
XOR
XORPS
Table 10-5.
IA-32 Instruction Summary (Continued)
IA-32 Instruction
Intel
®
Itanium
®
System
Environment
Comments
Summary of Contents for ITANIUM ARCHITECTURE - SOFTWARE DEVELOPERS VOLUME 3 REV 2.3
Page 1: ......
Page 11: ...x Intel Itanium Architecture Software Developer s Manual Rev 2 3 ...
Page 13: ...1 2 Intel Itanium Architecture Software Developer s Manual Rev 2 3 ...
Page 33: ...1 22 Volume 1 Part 1 Introduction to the Intel Itanium Architecture ...
Page 57: ...1 46 Volume 1 Part 1 Execution Environment ...
Page 147: ...1 136 Intel Itanium Architecture Software Developer s Manual Rev 2 3 ...
Page 149: ...1 138 Volume 1 Part 2 About the Optimization Guide ...
Page 191: ...1 180 Volume 1 Part 2 Predication Control Flow and Instruction Stream ...
Page 230: ......
Page 248: ...236 Intel Itanium Architecture Software Developer s Manual Rev 2 3 ...
Page 250: ...2 2 Intel Itanium Architecture Software Developer s Manual Rev 2 3 ...
Page 264: ...2 16 Volume 2 Part 1 Intel Itanium System Environment ...
Page 380: ...2 132 Volume 2 Part 1 Interruptions ...
Page 398: ...2 150 Volume 2 Part 1 Register Stack Engine ...
Page 486: ...2 238 Volume 2 Part 1 IA 32 Interruption Vector Descriptions ...
Page 750: ...2 502 Intel Itanium Architecture Software Developer s Manual Rev 2 3 ...
Page 754: ...2 506 Volume 2 Part 2 About the System Programmer s Guide ...
Page 796: ...2 548 Volume 2 Part 2 Interruptions and Serialization ...
Page 808: ...2 560 Volume 2 Part 2 Context Management ...
Page 842: ...2 594 Volume 2 Part 2 Floating point System Software ...
Page 850: ...2 602 Volume 2 Part 2 IA 32 Application Support ...
Page 862: ...2 614 Volume 2 Part 2 External Interrupt Architecture ...
Page 870: ...2 622 Volume 2 Part 2 Performance Monitoring Support ...
Page 891: ......
Page 1099: ...3 200 Volume 3 Instruction Reference padd Interruptions Illegal Operation fault ...
Page 1295: ...3 396 Volume 3 Resource and Dependency Semantics ...
Page 1296: ......
Page 1302: ...402 Intel Itanium Architecture Software Developer s Manual Rev 2 3 ...
Page 1494: ...4 192 Volume 4 Base IA 32 Instruction Reference FWAIT Wait See entry for WAIT ...
Page 1647: ...Volume 4 Base IA 32 Instruction Reference 4 345 ROL ROR Rotate See entry for RCL RCR ROL ROR ...
Page 1884: ...4 582 Volume 4 IA 32 SSE Instruction Reference ...
Page 1885: ...Index Intel Itanium Architecture Software Developer s Manual Rev 2 3 Index ...
Page 1886: ...Index Intel Itanium Architecture Software Developer s Manual Rev 2 3 ...
Page 1898: ...INDEX Index 12 Index for Volumes 1 2 3 and 4 ...