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3:36
Volume 3: Instruction Reference
chk
Operation:
if (PR[
qp
]) {
if (control_form) {
if (fr_form && (tmp_isrcode = fp_reg_disabled(
f
2
, 0, 0, 0)))
disabled_fp_register_fault(tmp_isrcode, 0);
check_type = gr_form ? CHKS_GENERAL : CHKS_FLOAT;
fail = (gr_form && GR[
r
2
].nat) || (fr_form && FR[
f
2
] == NATVAL);
} else {
// data_form
if (gr_form) {
reg_type = GENERAL;
check_type = CHKA_GENERAL;
alat_index =
r
1
;
always_fail = (alat_index == 0);
} else {
// fr_form
reg_type = FLOAT;
check_type = CHKA_FLOAT;
alat_index =
f
1
;
always_fail = ((alat_index == 0) || (alat_index == 1));
}
fail = (always_fail || (!alat_cmp(reg_type, alat_index)));
}
if (fail) {
if (check_branch_implemented(check_type)) {
taken_branch = 1;
IP = IP + sign_ext((
imm
21
<< 4), 25);
if (!impl_uia_fault_supported() &&
((PSR.it && unimplemented_virtual_address(IP, PSR.vm))
|| (!PSR.it && unimplemented_physical_address(IP))))
unimplemented_instruction_address_trap(0, IP);
if (PSR.tb)
taken_branch_trap();
} else
speculation_fault(check_type, zero_ext(
imm
21
, 21));
} else if (data_form && (
aclr
== ‘clr’))
alat_inval_single_entry(reg_type, alat_index);
}
Interruptions:
Disabled Floating-point Register fault
Unimplemented Instruction Address trap
Speculative Operation fault
Taken Branch trap
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 ...