Stanislav Shwartsman
002c86660a
reword all the CPU code in preparation for future CPU speedup implementation.
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Bochs emulation can be another 10-15% faster using technique described in paper
"Fast Microcode Interpretation with Transactional Commit/Abort"
http://amas-bt.cs.virginia.edu/2011proceedings/amasbt2011-p3.pdf
2011-07-06 20:01:18 +00:00
Stanislav Shwartsman
a02d8cfe67
cleanups, simplications, copyright updates
2011-04-23 20:39:27 +00:00
Stanislav Shwartsman
7d80a6ebe0
Adding Id and Rev property to all files
2011-02-24 21:54:04 +00:00
Stanislav Shwartsman
5915d92775
very small optimizations + indent
2011-01-25 20:59:26 +00:00
Stanislav Shwartsman
d60b7c0919
rename accessor for opcodeReg() in instruction
2010-12-06 21:45:56 +00:00
Stanislav Shwartsman
927c3594d6
enable compilation with CPU_LEVEL <= 6
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converted SEP to runtime option as well
2010-02-26 11:44:50 +00:00
Stanislav Shwartsman
bd60e0264c
change Copyright to Bochs Project
2009-12-04 16:53:12 +00:00
Stanislav Shwartsman
9929e6ed78
- updated FSF address
2009-01-16 18:18:59 +00:00
Stanislav Shwartsman
0d90ab0478
Completely new way to handle LD+OP cases - allows to significantly reduce number of BX_CPU_C methods
2008-08-09 21:05:07 +00:00
Stanislav Shwartsman
5dd02b26e3
Make even more efficient RmAddr calculation - good optimizing compiler could make more efficient code than it was before
2008-08-08 09:22:49 +00:00
Stanislav Shwartsman
709d74728d
Call #UD exception directly instead of UndefinedOpcode function - for future use
2008-07-13 15:35:10 +00:00
Stanislav Shwartsman
0127415ba6
Clear some duplicated arithmetic opcodes - difference only in operands order
2008-07-13 09:59:59 +00:00
Stanislav Shwartsman
2aaafa76a2
Reorganize fetchdecode tables with another level of redirection - a leap toward future improvements
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Currently no speedup and no slowdown - about the same results on my Bochs benchmarking
A lot of code reorganization in fetchdecode
2008-04-04 22:39:45 +00:00
Stanislav Shwartsman
167c7075fb
Use fastcall gcc attribute for all cpu execution functions - this pure "compiler helper" optimization brings additional 2% speedup to Bochs code
2008-03-22 21:29:41 +00:00
Stanislav Shwartsman
37fbb82baa
Cleanups. Move bxInstruction_c definition to separate file instr.h
2008-01-29 17:13:10 +00:00
Stanislav Shwartsman
7b80c5f481
I merged and succeded to remove some similar execution functions - less code, less chance for branch misprediction
2008-01-25 19:34:30 +00:00
Stanislav Shwartsman
d9984bb3a1
Eliminate BxResolve call from the heart of cpu loop and move into instructions that really require this calculation. Yes, it blows the code of EVERY CPU method but it has >15% speedup !
2008-01-10 19:37:56 +00:00
Stanislav Shwartsman
d891f0d8ec
Fixed more VC2008 warnings - hopefully last ones
2007-12-30 17:53:12 +00:00
Stanislav Shwartsman
838fb2a048
Fixing V2008 warnings - they found a bug in sse_pfp.cc !
2007-12-23 17:21:28 +00:00
Stanislav Shwartsman
5d4e32b8da
Avoid pointer params for every read_virtual_* except 16-byte SSE and 10-byte x87 reads
2007-12-20 20:58:38 +00:00
Stanislav Shwartsman
88899cf617
Changes for lazy flags handling -> 1st stap in transition to new lazy flags handling by Darek Mihocka (www.emulators.com)
2007-12-04 19:27:23 +00:00
Stanislav Shwartsman
7ca78b88e9
configure/compile changes + small optimizations
2007-12-01 16:45:17 +00:00
Stanislav Shwartsman
0a1063ad77
Split GvEv opcode groups
2007-11-21 22:36:02 +00:00
Stanislav Shwartsman
1af7010e50
Optimized memory access for 64-bit mode
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Starting convergence to new lazy flags scheme by Darek Mihocka (www.emulators.com). The new flags code is still being validated and perfected but I try to minimize the diff between 2 versionS
2007-11-20 17:15:33 +00:00
Stanislav Shwartsman
cdc9a09090
Split more opcodes
2007-11-18 18:24:46 +00:00
Stanislav Shwartsman
5ec15df46d
Split more opcodes EbIb opcodes
2007-11-17 18:08:46 +00:00
Stanislav Shwartsman
d5a58e1df2
Split more opcodes - G3 group
2007-11-17 16:20:37 +00:00
Stanislav Shwartsman
d9e58bd598
split11b on opcode tables level - split almost eevery splittable instruction
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will be continued
2007-11-17 12:44:10 +00:00
Stanislav Shwartsman
393018cdf8
More split11b
2007-11-16 17:45:58 +00:00
Stanislav Shwartsman
351244d1ea
Rename splitmod11b methods
2007-11-16 08:30:22 +00:00
Stanislav Shwartsman
dc5c25133f
Fixes in registers read/write -> fixed zero upper of register in POP_Ed
2007-11-13 21:07:08 +00:00
Stanislav Shwartsman
2653d54e96
split 32-bit modermdata variable in BxInstruction_c to 4 Bit8u variables
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this way it is possible to save shifts and masking when accessing modrm fields
2007-11-08 18:21:37 +00:00
Stanislav Shwartsman
494189e822
Small optimization for ADD lazy flags calculations.
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Because most likely flags are not needed after ADD instruction - it is better to store less data for lazy flags and reconstruct it if needed
2007-11-06 08:39:25 +00:00
Stanislav Shwartsman
5a172541e2
Small cleanup
2007-11-01 20:43:53 +00:00
Stanislav Shwartsman
42fdd8a3a1
During Bochs benchmarking I figured out that hostasm actually slow down the emulation ... so remove this ugly code which also doesn't help :)
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speedup flags update for some instructions - idea was taken from DT patch by h.johansson
2007-10-21 22:07:33 +00:00
Stanislav Shwartsman
8221fa6838
- Fixed zero upper 32-bit part of GPR in x86-64 mode
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- CMOV_GdEd should zero upper 32-bit part of GPR register even if the
'cmov' condition was false !
2007-01-26 22:12:05 +00:00
Stanislav Shwartsman
5c3fba4399
Support access to SMRAM in memory object
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Cleanup in CPU code
2006-03-26 18:58:01 +00:00
Stanislav Shwartsman
7b6c2587a9
Now devices could be compiled separatelly from CPU
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Averything that required cpu.h include now has it explicitly and there are a lot of files not dependant by CPU at all which will compile a lot faster now ...
2006-03-06 22:03:16 +00:00
Stanislav Shwartsman
51e03f071d
Fixed XLAT instruction for x86-64
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Small optimization for lazy flags for ADD/ADC/SUB/SBB instructions
Enable RETF64 for same privelege level return
2005-07-21 01:59:05 +00:00
Stanislav Shwartsman
c026a90779
Unify coding style in CPU methods
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NO AFFECT ON EMULATION RESULTS
2005-05-20 20:06:50 +00:00
Stanislav Shwartsman
6fd9f82c35
Fixed typo in apic.cc
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Small speedup for arith64.cc (redundant modC0() call ellimination)
Cleanup
2005-04-02 18:49:44 +00:00
Stanislav Shwartsman
1f5aa2696f
Fix compilation errors ;)
2004-08-18 21:29:07 +00:00
Stanislav Shwartsman
b370a417a4
Optimize lazy-flags for ADC and SBB instructions
2004-08-18 20:47:35 +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
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
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
8f0cf91fff
This commit is the first commit in long series of changes the have several purposes:
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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