Stanislav Shwartsman
52041f60d4
Support for X86_64 in debug CPU method
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Fixed debug messages printed from read_virtual_checks
2005-03-30 19:56:02 +00:00
Stanislav Shwartsman
e5c3e3c262
CPU mode enumeration changed
2005-03-29 22:18:13 +00:00
Stanislav Shwartsman
619942cf9a
Enable SYSENTER/SYSEXIT together with x86-64 support, these instructions used by gentoo amd64 LiveCD image (at least it WRMSR to SYSENTER MSRs).
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SYSENTER/SYSEXIT is not recognized in long mode but it could be used i any other mode without problem
2005-03-29 21:59:44 +00:00
Stanislav Shwartsman
da9091f04a
Fixed compatability mode execution bug, compatability mode and long mode should be treated as protected for all protected_mode() checks
2005-03-29 21:37:06 +00:00
Stanislav Shwartsman
0ed560ed3d
Enable info fpu command in debugger
2005-03-28 18:19:02 +00:00
Stanislav Shwartsman
22098eefa2
Removed unused instruction (function) methods which were generated as a result of the initial implementation of AMD64 support.
2005-03-28 06:29:22 +00:00
Kevin Lawton
831afe7c40
Removed unused instruction (function) prototypes which were generated as
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a result of the initial implementation of AMD64 support. These appear
to have been cut-n-paste vestiges.
2005-03-25 21:33:47 +00:00
Kevin Lawton
e6cb602231
Moved macros for duplicate SSE/SSE2 functions from fetchdecode.h to
...
cpu.h, and defined function prototypes for the case where bochs
is compiled with a new #define (called StandAloneDecoder) is set.
This allows for the decoder to be tested separately from bochs.
2005-03-23 01:45:16 +00:00
Kevin Lawton
4e03c4448c
Added some comment tags so that a script can pull out relevant parts
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of the decoder to test it in standalone mode. A few lines in cpu.h
were re-arranged to make this easy, but no real lines of code were
changed or generated.
Changed a few PANICs to INFOs after testing corresponding cases.
2005-03-22 18:19:55 +00:00
Stanislav Shwartsman
c3fd89eceb
More accurate fix for cpu_online_map ellimination
2005-03-20 18:33:02 +00:00
Stanislav Shwartsman
1e37312c14
Remove code duplication
2005-03-20 18:08:46 +00:00
Stanislav Shwartsman
3570f5f629
Reverting back RETF instruction changes made by Kevin Lawton
2005-03-20 18:01:01 +00:00
Stanislav Shwartsman
3074078297
Added CVS version header to all the files.
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One more small change in APIC
2005-03-19 20:44:01 +00:00
Stanislav Shwartsman
f77ddd9701
Remove cpu_onlline_map varaible, it wasn't initialized properly and might cause APIC problems
2005-03-19 18:43:00 +00:00
Stanislav Shwartsman
e6e9dd3825
Extend Bochs instrumentation
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Compatability fixes
2005-03-17 20:50:57 +00:00
Stanislav Shwartsman
6e53a54907
Extend cpu_mode for :
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#define BX_MODE_IA32_REAL 0x0 // CR0.PE=0
#define BX_MODE_IA32_PROTECTED 0x1 // CR0.PE=1, EFLAGS.VM=0
#define BX_MODE_IA32_V8086 0x2 // CR0.PE=1, EFLAGS.VM=1
#define BX_MODE_LONG_COMPAT 0x3 // EFER.LMA = 0, EFER.LME = 1
#define BX_MODE_LONG_64 0x4 // EFER.LMA = 1, EFER.LME = 1
2005-03-15 19:00:04 +00:00
Stanislav Shwartsman
189e55885d
put VME initial code in BX_SUPPORT_VME ifdefs
2005-03-13 20:18:37 +00:00
Stanislav Shwartsman
e3bd4e2b34
Update recent closed byg reports
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Remove redundant debug prints in VERR instruction emulation
2005-03-13 18:20:26 +00:00
Stanislav Shwartsman
fd13784231
Small cleanup in access.cc
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VME feature code should be valid only for CPU LEVEL >= 4
2005-03-12 19:34:18 +00:00
Stanislav Shwartsman
6a36385743
Add more comments for loading segment register in real mode
2005-03-12 18:38:56 +00:00
Stanislav Shwartsman
5a393d2399
Fix for PANIC
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1162042 Duke Nukem 3D: >>PANIC<< iret: VM set on stack, CPL!=0
according to Intel and AMD docs the behaviour wasn't correct
2005-03-12 18:09:32 +00:00
Stanislav Shwartsman
2a5a5c2de5
Fixed compilation error for 486 CPU
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small fixes for IRET instructionm
2005-03-12 16:40:14 +00:00
Stanislav Shwartsman
714b9c9d22
Added ICACHE statistics
2005-03-10 21:22:15 +00:00
Stanislav Shwartsman
24fa5935c1
Getting little bit closer to VME feature
2005-03-09 22:01:13 +00:00
Stanislav Shwartsman
031cd64827
More code review - changing BX_PANIC to BX_ERROR where implentation matches Intel docs. Also solved two cases when TS exception generated instead of GPF
2005-03-04 21:03:22 +00:00
Stanislav Shwartsman
c30e89289b
Fixed R/O pages access in CPL=3 (TLB accessBits bug)
2005-03-03 20:24:52 +00:00
Stanislav Shwartsman
709b218c10
Reduce metaInfo initialization in fetchDecode
2005-03-01 21:44:01 +00:00
Stanislav Shwartsman
23e2895f8e
Fixed interrupt function for
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286 int/trap gate, in vm8086 mode
2005-03-01 20:55:25 +00:00
Stanislav Shwartsman
dafc5fd193
Fix extdb.cc compilation error
2005-03-01 17:49:34 +00:00
Stanislav Shwartsman
b25088bf2f
Merge patch [1153327] ignore segment bases in x86-64 by Avi Kivity
2005-02-28 18:56:05 +00:00
Stanislav Shwartsman
aeec5a6c5a
just dos2unix
2005-02-27 18:14:29 +00:00
Stanislav Shwartsman
c583a6f9cf
move segments and descriptors definitions and macroses for new descriptor.h
2005-02-27 17:41:45 +00:00
Stanislav Shwartsman
6e773a652a
Fix SYSENTER/SYSEXIT instructions
2005-02-26 12:00:22 +00:00
Stanislav Shwartsman
f483bcfd70
Fixed possible memory corruption in case of wrong size APIC read (used by WinNT MP)
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Compiler compitability fixes (use 0 and 1 instead of true and false)
2005-02-25 20:53:14 +00:00
Stanislav Shwartsman
0e472af877
Merge patch:
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[1151012] allow null ss on x86-64 by Avi Kivity
2005-02-24 19:50:36 +00:00
Stanislav Shwartsman
ef197b2a56
Fixed compilation error in paging.cc
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Some fixed for APIC in P4 processor
APIC patch by mrieker cleaned even more
2005-02-23 21:18:24 +00:00
Stanislav Shwartsman
830ca51b91
Merge patches:
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1149720 critical - fix x86-64 SYSCALL RFLAGS masking
1149758 wrmsr efer fix
2005-02-23 18:00:07 +00:00
Stanislav Shwartsman
41578589c1
Merge two patches by Avi Kivity (avik)
2005-02-22 18:24:19 +00:00
Stanislav Shwartsman
76e0f2cc95
Fixed AMD cpuid
2005-02-20 20:02:54 +00:00
Stanislav Shwartsman
3351723e70
Fixed P4 extended CPUID
2005-02-17 06:07:58 +00:00
Stanislav Shwartsman
2bfc842c09
CPU fixes by Kevin Lawton
2005-02-16 21:27:21 +00:00
Stanislav Shwartsman
169769504e
Changes BX_PANIC to BX_INFO in some more cases (patch by Kavin Lawton)
2005-02-16 19:59:03 +00:00
Stanislav Shwartsman
91526a90b3
Merged patch
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[1123895] x86-64 gdb/debugger fixes by Avi Kivity
2005-02-16 18:58:48 +00:00
Stanislav Shwartsman
a01347f17d
Extended information for AMD and Intel processors (CPUID)
2005-02-14 21:17:20 +00:00
Stanislav Shwartsman
b69345225b
Correct model_id for Pentium MMX in CPUID
2005-02-13 21:20:48 +00:00
Stanislav Shwartsman
e7e149d21a
Changed PANIC message to ERROR message. This should fix an error message reported in Bug Tracker - PANIC after Reset button is pushed.
2005-02-13 18:36:52 +00:00
Stanislav Shwartsman
9492942ae6
In 64-bit mode, the CS, DS, ES, and SS segment overrides are ignored.
2005-02-12 19:25:33 +00:00
Stanislav Shwartsman
799403620e
Small speedup in boundaryFetch method
2005-02-12 14:00:13 +00:00
Stanislav Shwartsman
c1284af614
Removed already obsolete patch.smp-pge-pic-poll
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Small cleanup in apic.cc/apic.h
I would like to test patch.apic-mrieker so I need more clean apic code
2005-02-08 18:41:33 +00:00
Stanislav Shwartsman
e6efa3a451
- exceeding the instruction length limit of 15 bytes (this only can
...
occur when redundant prefixes are placed before an instruction)
generate #GP(0) (Stanislav)
2005-02-05 20:56:44 +00:00
Stanislav Shwartsman
153bec9d1a
Fixed compilation errors when CPU-LEVEL=3
2005-02-03 22:24:45 +00:00
Stanislav Shwartsman
9305305493
First (and may be last) step to implementation of
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Virtual Mode Extensions (VME)
and
Protected Mode Virtual Interrupts (PVI)
instructions STI and CLI have full support of these features, according to Intel docs. Need to check POPF and PUSHF instructions and afterwise VME and PVI extensions could be enabled in CR4
2005-02-03 22:08:34 +00:00
Stanislav Shwartsman
5701f62a42
Fix compiler warnings with -wall
2005-02-03 18:43:23 +00:00
Stanislav Shwartsman
d27e81bdac
-in case of --enable-ignore-bad-msr enabled read ignored MSRs as zeRo
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- enabled #DE and #TSD and #MCE bits in CR4 register, previosly setting
of one of these bits generated #GP(0) (Stanislav, Volker Ruppert)
2005-02-03 18:25:10 +00:00
Stanislav Shwartsman
3fdbf48a69
Fixed bug in interrupt function in real mode
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Style change
Update CHANGES
Remove patch.v8086-exception.lightcone because it already in CVS
2005-02-01 21:17:57 +00:00
Stanislav Shwartsman
68714924b0
Return local APIC id in CPUID 00000001h function in EBX register
2005-01-29 15:24:57 +00:00
Stanislav Shwartsman
bbcc5e0e3a
Split BOUND instruction to two different according to operand size
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Coding style change
2005-01-28 20:50:48 +00:00
Stanislav Shwartsman
42a5a899c2
Improvement in the speed of general memory access.
...
The idea was taken from patch written by
LightCone
2005-01-25 20:41:43 +00:00
Stanislav Shwartsman
7eb2f0aa3e
Enable TSD in CR4 (RDTSC instruction is already implemented so it has no problem to enable TSD for CPU LEVEL >=5)
2005-01-23 21:13:49 +00:00
Stanislav Shwartsman
57fcc89274
Non-Execution support impelemented and enabled in CPUID when in x86-64 configuration
2005-01-20 19:37:43 +00:00
Stanislav Shwartsman
2212b963ed
Added additional comment to code in paging.cc
2005-01-19 20:48:51 +00:00
Stanislav Shwartsman
8d5d5b1561
Reset local apic on CPU RESET
2005-01-13 19:18:27 +00:00
Stanislav Shwartsman
3cd646004f
Fixed bug "1101168 APIC base address change"
2005-01-13 19:03:40 +00:00
Volker Ruppert
48ebc288c6
- MCE is supported on Pentium or higher (exception 18 never appears in Bochs)
2005-01-09 08:14:15 +00:00
Stanislav Shwartsman
d142f23242
Fixed undocumented flags handling for SHLD instruction
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Added lazy flags for SHLD instruction
Bugfix and speedup in SHLD and SHRD instructions
2004-12-24 22:44:13 +00:00
Stanislav Shwartsman
8fe15b0ddc
Fixed compilation error
2004-12-17 10:50:49 +00:00
Stanislav Shwartsman
f5b64a3a59
more preparations to NXE feature
2004-12-16 22:21:35 +00:00
Stanislav Shwartsman
5955549a8d
Fixed bug report [ #879050 ]
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Bochs reports enabled APIC without support
2004-12-14 20:41:55 +00:00
Stanislav Shwartsman
da24883199
Extend page directory entries to 8 byte in PAE mode when X86_64 is enabled
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(prepartions to NX feature implementation)
2004-12-13 22:26:36 +00:00
Volker Ruppert
02ae558db8
- removed old unused code designed for a save/restore feature
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- fixed pcidev targets in iodev/Makefile.in
- updated all Makefile dependencies using a default setup (.conf.linux).
TODO: dependencies should be generated at compile time since they depend on
the config settings
2004-12-13 19:10:38 +00:00
Stanislav Shwartsman
f375203fdb
preparations for x86-64 support in disasm
2004-12-12 22:12:43 +00:00
Stanislav Shwartsman
46bb3d8853
remove duplicated data arrays from CPU
2004-12-11 20:51:13 +00:00
Stanislav Shwartsman
ce80380b29
fixed ENTER instruction, this implemntation looks correct but it still need to be confirmed by testing ...
2004-11-27 20:36:53 +00:00
Stanislav Shwartsman
5213e903bd
mov duplicate opcode groups from fectchdecode*.cc to .h
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use common register accessor macroses instead of direct register file structure access
2004-11-26 20:21:28 +00:00
Stanislav Shwartsman
0d09a8c8a8
fix code duplication
2004-11-26 19:53:04 +00:00
Stanislav Shwartsman
69c0b06955
fixes in disassembler
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split REPEAT instructions according to opsize to speedup execution
now each REPEATABLE instruction splitted to 3 different instructions, one for 16-bit operand size, one for 32-bit and one for 64-bit. Choosing of correct instruction occure in fetchdecode step.
2004-11-20 23:26:32 +00:00
Stanislav Shwartsman
bf0fc24cd5
Fixed icache uncompetability with physical addresses > mem.len
2004-11-19 09:39:30 +00:00
Stanislav Shwartsman
645e04860e
For now : disable fetching from physical address 0xFFFFFFF0 after #RESET
...
because ICACHE do not support physical address > mem.len.
This is the first part of the fix, the rest coming soon
2004-11-18 23:16:36 +00:00
Stanislav Shwartsman
02fc33a86b
Fix CS.base register after #RESET
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update changes
2004-11-16 19:19:13 +00:00
Stanislav Shwartsman
c482fbed43
Add additional debug info
2004-11-15 19:38:42 +00:00
Stanislav Shwartsman
a75280d757
Fix CS.BASE wrong value on reset
2004-11-14 21:47:58 +00:00
Stanislav Shwartsman
730b8c0243
Fix this pointers in the code
2004-11-14 21:25:42 +00:00
Stanislav Shwartsman
71c1275b21
dos2unix
2004-11-14 19:39:01 +00:00
Stanislav Shwartsman
7b62a6e206
Fix reset registers in CPU for #RESET signal
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Extract ICACHE from cpu.h to separate icache.h
2004-11-14 19:29:34 +00:00
Stanislav Shwartsman
08810d54c4
Fix fetchdecode for FPU instructions when FPU is not present
2004-11-12 16:47:35 +00:00
Volker Ruppert
3cad938b05
- gdbstub support turned into a runtime option (SF patch #1021740 by Charles Duffy)
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- gdb_* options moved to the new gdbstub option
2004-11-06 10:50:03 +00:00
Stanislav Shwartsman
41daacdf80
fixed BX_CPU_THIS pointers
2004-11-05 10:13:15 +00:00
Stanislav Shwartsman
1a6656ce91
Fixed compilation warnings (g++, -Wall)
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Improve speed and precision of FPATAN FPU instruction
2004-11-04 22:41:24 +00:00
Stanislav Shwartsman
2ce5495d38
Fixed compilation errors
2004-11-03 06:35:48 +00:00
Stanislav Shwartsman
8191201e17
If exception occured register should not be modified.
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Fix for x86-64
2004-11-02 20:39:45 +00:00
Stanislav Shwartsman
4e3bc367b6
Fixed all JUMP near, CALL near and RET near cases
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for problem EIP>CS.limit was not checked in real mode
2004-11-02 18:05:19 +00:00
Stanislav Shwartsman
2ed7e4eed5
EIP > CS.limit should be checked in real mode too.
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Enable for now for JUMP instructions, still todo - CALL and RET
2004-11-02 17:31:14 +00:00
Stanislav Shwartsman
f06c8b6b95
EIP > CS.limit should not be a problem
...
Manual says that GP(0) shouldd be generated in this case ALWAYS
Fixed instructions PANIC messages to ERROR for this case
And ... do not leave PANIC messages w/o taking care that user could push CONTINUE button and program should know to continue after the PANIC code line. Mainly in rerurn instructions were several problems ...
2004-11-02 16:10:02 +00:00
Stanislav Shwartsman
79bd13c46c
iret32_real implemented right for 386+, not only for Pentium CPU.
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Removed ifdef's
2004-10-30 16:04:58 +00:00
Stanislav Shwartsman
a9022ac5cb
Fixed compilation prroblem reported in bug
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[ bochs-Bugs-913418 ] compiler errors with --enable-external-debugger option
Remove code duplication
2004-10-29 21:15:48 +00:00
Stanislav Shwartsman
5e23909c7c
prepations for NX bit implementation
2004-10-21 18:20:40 +00:00
Stanislav Shwartsman
95c894d403
Removed unused code
2004-10-19 20:05:07 +00:00
Stanislav Shwartsman
75e0c5b421
Little speed optimizations in cpu_loop function
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change apic classes to more c++ friendly
2004-10-16 19:34:17 +00:00
Stanislav Shwartsman
4a9bd714d8
Fix init values for system registers
2004-10-16 10:18:01 +00:00
Stanislav Shwartsman
80ee150d83
Imlemented CR8 register for X86-64 mode
2004-10-13 20:58:16 +00:00
Stanislav Shwartsman
4f1f070c37
Fix comments for code
2004-10-08 19:29:04 +00:00
Stanislav Shwartsman
3adc5c8659
Fix lock prefix for XOR instruction in 64-bit mode
2004-10-08 19:07:18 +00:00
Stanislav Shwartsman
d1af05cbe2
Fix typo in stack64
2004-10-06 20:10:01 +00:00
Stanislav Shwartsman
6a9e8e6011
Drop unnecessary warning
2004-10-05 20:25:06 +00:00
Stanislav Shwartsman
4988a098f5
Small optimizations
2004-10-03 21:52:10 +00:00
Stanislav Shwartsman
a28a2c6ce1
Added comments
2004-10-03 20:25:19 +00:00
Stanislav Shwartsman
a21018e1db
Fixed bug
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[ 766020 ] info registers / dump_cpu get old eflags
2004-09-30 16:50:03 +00:00
Stanislav Shwartsman
c9bc4eaf02
1. add comments to CPUID instruction
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2. small cleanup
2004-09-26 20:29:04 +00:00
Stanislav Shwartsman
3f096fdb9f
Fix FISTTP instruction opcode table
2004-09-21 21:19:59 +00:00
Stanislav Shwartsman
040be015d8
1. Added required GP(0) exception when setting conficting flags in CR0
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2. APIC disabled compilation error fixed
2004-09-21 20:19:19 +00:00
Stanislav Shwartsman
b6657b1322
NX feature still not implemented in Bochs.
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The change forces CPUID do not report bit 20 (NX bit support)
May be some OS that really checks it will boot better now
2004-09-17 21:01:50 +00:00
Stanislav Shwartsman
760a195c9d
* Fix LOCK prefix handling for x86-64
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* Split BT*_EvGv functions to 3 different function according to exec mode
2004-09-17 20:47:19 +00:00
Stanislav Shwartsman
c780a15e6f
dos2unix for apic.h
2004-09-15 22:02:19 +00:00
Stanislav Shwartsman
bbd55fe16f
Merge and commit patch.apic-zwane from CVS patches directory.
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the patch release notes by Zwane:
o Define symbols for constants like
o APIC arbitration
o Processor priority
o Various interrupt delivery fixes
o Focus processor checking
o ExtINT delivery
I need to release this now so that i don't fall too far behind CVS, when
it was part of the bochs-smp patch it could boot 2.4.18 4way. Apologies
for the whitespace changes.
Also remove patch.apic-ppr-zwane patch because it already included in
patch.apic-zwane.
I hope it will help to boot x86-64 or cmp systems required missed APIC
features !
2004-09-15 21:48:57 +00:00
Stanislav Shwartsman
283f9ae5d2
Simplify cpu.h
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Speedup FYL2X and FYL2XP1 instructions
2004-09-14 20:19:54 +00:00
Stanislav Shwartsman
6cdb42d909
Little bit optimize memory access functions. Now values are calculated only if they actually needed.
2004-09-13 20:48:11 +00:00
Stanislav Shwartsman
fc631037ff
remove obsolete comments from fetchdecode
2004-09-06 20:22:39 +00:00
Stanislav Shwartsman
ce459276c3
Fixed problem in previous commit ...
2004-09-04 20:19:39 +00:00
Stanislav Shwartsman
3916754e30
speedup and cleanup
2004-09-04 19:37:37 +00:00
Stanislav Shwartsman
6dc8a1cafd
Very small code cleanup
2004-09-04 18:22:22 +00:00
Stanislav Shwartsman
193c7332aa
1. Small optimization for lazy_flags.cc
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2. Merge patch 1013516
Avoid invalidate_prefetch_q on enter, leave and cpuid
2004-09-04 10:21:28 +00:00
Stanislav Shwartsman
75006eed8a
Fix MUL/IMUL instructions flags handling
2004-08-31 19:43:58 +00:00
Stanislav Shwartsman
016207b222
Commented problematic check in misc_mem.cc
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Implemnted lazy-flags and undocumented flags handling for IMUL instructions
2004-08-30 21:47:24 +00:00
Stanislav Shwartsman
77b3886f8b
Cleanup and optimize
2004-08-28 08:41:46 +00:00
Stanislav Shwartsman
8953bfaffb
Fixed flags handling for SHLD and rotate instrructions
2004-08-27 20:13:32 +00:00
Stanislav Shwartsman
27897c925e
Fix undocumented flags handling for SHL instruction
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remove invalidate_prefetch_q from CPUID
2004-08-27 18:43:23 +00:00
Stanislav Shwartsman
f2294e7c29
LAZY-FLAGS for MUL instructions
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undocumented flags handling for MUL instructions
2004-08-26 20:37:50 +00:00
Stanislav Shwartsman
fcc54c7f82
Add missed flags modification
2004-08-18 21:38:50 +00:00
Stanislav Shwartsman
1f5aa2696f
Fix compilation errors ;)
2004-08-18 21:29:07 +00:00
Stanislav Shwartsman
8c618be951
Fix comments
2004-08-18 20:49:31 +00:00
Stanislav Shwartsman
b370a417a4
Optimize lazy-flags for ADC and SBB instructions
2004-08-18 20:47:35 +00:00
Stanislav Shwartsman
729e0abd2a
Fixed bug [ 912496 ] IDIV can cause simulator divide error
2004-08-18 19:27:52 +00:00
Stanislav Shwartsman
571617bcda
Optimize lazy flags for NEG instruction
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Removed duplicate flags modification in CMPXCHG instruction
2004-08-17 17:34:47 +00:00
Stanislav Shwartsman
231cd533c6
1. Update changes
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2. Fix lazy_flags duplicate instruction patterns
2004-08-16 20:18:01 +00:00
Stanislav Shwartsman
c2b7f183af
more correct implementation
2004-08-15 20:31:27 +00:00
Stanislav Shwartsman
eefdcece6f
Speed-up BTC instruction
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Speed-up SAR instruction with implementing lazy-flags for it
2004-08-15 20:12:05 +00:00
Stanislav Shwartsman
12b68ede54
XADD and ADD instructions have same flags modification rules - remove redundant switch case
2004-08-14 20:44:48 +00:00
Stanislav Shwartsman
88a19a8594
Speedup lazy-flags for NEG instruction
2004-08-14 20:09:22 +00:00
Stanislav Shwartsman
1b7b791493
Speedup lazy-flags for INC and DEC instructions
2004-08-14 20:00:24 +00:00
Stanislav Shwartsman
1732e54baa
Fixed undocumented flags handling for some instructions.
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Bugfix for CF flag handling for SHL64 instruction
2004-08-14 19:34:02 +00:00
Stanislav Shwartsman
a1f830d429
Implemented FAST lazy flags version for logic instructions.
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Small code cleanup/simplification for others.
2004-08-13 20:00:03 +00:00
Stanislav Shwartsman
5de51f67d9
Prepare lazy flags macroses for more efficient lazy flags handling
2004-08-11 21:26:23 +00:00
Stanislav Shwartsman
8f0cf91fff
This commit is the first commit in long series of changes the have several purposes:
...
1. Review and commit patch
[ 896733 ] Lazy flags, for more instructions, only 1 src op
May be partially, but I hope to get all ideas from patch in
2. Get Bochs speedup after lazy flags optimization
3. Most important for me: improve correctness of emulation by handling several
undocumented EFLAGS modifications. And finally pass
UFLAGS - Undefined Flags Test v 3.0
Copyright (C) Potemkin's Hackers Group (PHG) 1989,1995
The test still fails on > 50% of its checks.
2004-08-09 21:28:47 +00:00
Stanislav Shwartsman
789ed4da04
Removed debug print
2004-07-29 20:30:14 +00:00
Stanislav Shwartsman
f9bd2b74be
1. Fixed bug in FSUB instruction
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2. Fixed bug
[ 989478 ] I-Cache and undefined Instruktions
The L4 microkernel uses an undefined instruction to
trap for a special requests into the kernel (LOCK NOP).
The handler fixes this up and gives the user a special
code page with syscall stubs. If you're not using the
I-Cache optimization everthing works find on bochs. But
if you enable the I-Cache (--enable-icache), then the
undefined opcode exception is thrown only once for ever
virtual address it occurs. See the demodisk of the
L4KA::pistachio
(http://www.l4ka.org/projects/pistachio/download.php ).
In this case the pingpong benchmark of this demo is of
interest. Everything runs fine until the program tries
to spawn a new task for its measurements. This new task
shares the code of the creating program. But the new
task stops executing at the undefined instruction
explained above and no exception is thrown.
2004-07-29 20:15:19 +00:00
Stanislav Shwartsman
50aaf8ec6f
Implemented FFREEP 287+ compatability instruction
2004-07-15 19:45:33 +00:00
Stanislav Shwartsman
79b1cfdc1c
removed unused code
2004-07-12 19:20:55 +00:00
Stanislav Shwartsman
ddc6c33887
BX_PANIC replaced by BX_INFO
2004-07-08 20:15:23 +00:00
Stanislav Shwartsman
02dec84af9
Fix FXSAVE/FXRSTOR instructions exceptions handling
2004-07-03 11:02:43 +00:00
Stanislav Shwartsman
cc61e5d5d5
Leave aligment in floatx80 reg to compiler.
...
CPU code no longer assume that floatx80 register is 16-byte aligned
2004-07-02 20:24:47 +00:00