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135 Commits

Author SHA1 Message Date
Stanislav Shwartsman
eda28b95f4 unfortunately this change is rquired to make SMAP and SMEP features to work. 
I observed ~5% emulation slowdown ... thinking about possible mitigations

this fixes TLB issue with SMAP and SMEP features.
these features introduce a new behavior when page can be inaccessible by System (CPL=0).
Current behavior is accessBits was not supporting it but legacy (from Bochs 2.3.6) was.
The wrong behavior can be observed if user access a user page and system access the same page later.
user access is fine and pass SMEP/SMA checks and stores the translation in TLB.
the system access will hit the TLB and nobody could detect that system cannot access that page.
 2013-01-16 17:28:20 +00:00
Stanislav Shwartsman
b5a33e82ac fixed a lot of code duplication in debugging/instrumentation of mem access 2012-03-20 18:26:04 +00:00
Stanislav Shwartsman
a668ff9908 small code optimization 2012-03-13 19:41:10 +00:00
Stanislav Shwartsman
7ced718040 implemented AVX instructions support 
many changes - some cleanup will follow
please report ay found bugs !
 2011-03-19 20:09:34 +00:00
Stanislav Shwartsman
7d80a6ebe0 Adding Id and Rev property to all files 2011-02-24 21:54:04 +00:00
Stanislav Shwartsman
fe0685c7f9 fine granular SMC detection (128b granularity used) 
significant reduction (>80%) of false SMC flushes
 2011-01-04 16:17:20 +00:00
Stanislav Shwartsman
d60b7c0919 rename accessor for opcodeReg() in instruction 2010-12-06 21:45:56 +00:00
Stanislav Shwartsman
49c85b07f6 Fixed address size wrap 2010-10-18 22:19:45 +00:00
Stanislav Shwartsman
55cb12badf fixed missed canonical failure on system access 2010-07-22 20:12:25 +00:00
Stanislav Shwartsman
bd60e0264c change Copyright to Bochs Project 2009-12-04 16:53:12 +00:00
Stanislav Shwartsman
6d6bf4a65e code optimization for future 2009-10-08 18:07:50 +00:00
Stanislav Shwartsman
4470c6a1c8 make ICACHE always enabled option and deprecate it in the configure script 
Trace cache still can be turned off
 2009-03-13 18:48:08 +00:00
Stanislav Shwartsman
43fc81651d Removed redundant code 2009-03-05 17:48:12 +00:00
Stanislav Shwartsman
9929e6ed78 - updated FSF address 2009-01-16 18:18:59 +00:00
Stanislav Shwartsman
a2e07ff971 - Removed --enable-guest2hos-tlb configure option. The option will be 
always enabled for any Bochs configuration.
 2008-12-11 21:19:38 +00:00
Stanislav Shwartsman
23933d731c Remove 4G limit optimization that didn't work quite well 2008-09-08 20:47:33 +00:00
Stanislav Shwartsman
7145d240f4 Optimize system read using Guest2Host TLB 2008-09-06 17:44:02 +00:00
Stanislav Shwartsman
aea946b4a3 One more change to speedup memory access through HostPtr check 2008-08-14 22:26:15 +00:00
Stanislav Shwartsman
bbf02a8bc5 More clean rewrite of the TLB access bits 2008-08-07 22:14:38 +00:00
Stanislav Shwartsman
6398ebb1d4 First step of access bits cleanup and optimization - no perf gain yet 2008-08-03 19:53:09 +00:00
Stanislav Shwartsman
2e8bc558d1 Speedup SSE by introducing read/write_virtual_dqword_aligned methods 2008-08-02 10:16:47 +00:00
Stanislav Shwartsman
c388f48fff - Fixed memory bug in tripple fault detection 
- Implement 16-byte memory accessor for SSEx - speedup SSE code emulation by >20%
 2008-07-26 14:19:06 +00:00
Stanislav Shwartsman
85686db212 Removed unused methods 2008-07-13 14:22:43 +00:00
Stanislav Shwartsman
c1f308d80d Push error code if segment violation occurs when pushing arguments into a new stack 2008-06-25 02:28:31 +00:00
Stanislav Shwartsman
92568f7525 Faster 32-bit emulation wwith 64-bit enabled mode. 
~10% speedup byu optimization of 32-bit mem access
 2008-06-12 19:14:40 +00:00
Stanislav Shwartsman
46a9524e70 Fixed commnt 2008-05-30 21:14:49 +00:00
Stanislav Shwartsman
d295371450 - Correctly handle segment a byte in BIG real mode 2008-05-26 21:46:39 +00:00
Stanislav Shwartsman
c3f96973ba Added debug prints 2008-05-12 19:19:03 +00:00
Stanislav Shwartsman
d3528cccd6 Style fixes - name convention for push to new stack methods 2008-05-10 20:35:03 +00:00
Stanislav Shwartsman
ec1ff39a5f Splitted memory access methods for 32 and 64-bit code. 
The 64-bit code got >10% speedup, the 32-bit code also got about 2% because laddr cacluation optimization
 2008-05-10 18:10:53 +00:00
Stanislav Shwartsman
25ce5f7d48 Small functionality correctness fixes 2008-05-07 16:45:07 +00:00
Stanislav Shwartsman
a6b360c92f Removed duplicated ';' 2008-05-03 17:35:11 +00:00
Stanislav Shwartsman
50c9674d2e Small optimization in memory access functions 2008-05-03 17:33:30 +00:00
Stanislav Shwartsman
8e8fa363f1 Check for seg cache valid bit in real mode as well - fix for big real mode 2008-05-01 05:11:19 +00:00
Stanislav Shwartsman
67e534832b Remove from CPU reference to MEM object - it is only one and could be static 2008-04-27 19:49:02 +00:00
Stanislav Shwartsman
bbe7db9e88 Fixed bug with pushing into new stack in exception function 
Fixed bug with Expand down segment limits (can be critical)
 2008-04-25 21:21:46 +00:00
Stanislav Shwartsman
00ee869624 alignment check for write_new_stack 2008-04-25 12:44:16 +00:00
Stanislav Shwartsman
bdaef81603 Added debugger memory trace functionality. Enable by 'trace-mem on' command 2008-04-19 13:21:23 +00:00
Stanislav Shwartsman
8ff1b3c15e Update MEM_ACCESS instrumentation 2008-04-19 10:13:04 +00:00
Stanislav Shwartsman
fea49bb270 Fixed linear address wrap in legacy (not long64) mode 2008-04-07 18:39:17 +00:00
Stanislav Shwartsman
5826e2843a Inline pop/push functions 
Store only single byte of opcode in b1() - speedup shift instructions
Code cleanups
 2008-04-05 17:51:55 +00:00
Stanislav Shwartsman
f3a91710e4 Split access_linear to access_read_linear and access_write_linear 2008-03-29 18:18:08 +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
680a588575 Fixed compilation error when alignment check is disabled 2008-02-12 06:47:03 +00:00
Stanislav Shwartsman
8d7410a852 Canonical check have higher priority than #AC check 2008-02-11 20:52:10 +00:00
Stanislav Shwartsman
a2897933a3 white space cleanup 2008-02-02 21:46:54 +00:00
Stanislav Shwartsman
9ec2c87aaa cleanups and optimizations 2008-01-22 16:20:30 +00:00
Stanislav Shwartsman
31bab8e058 Fixed compilation error with instrumentation enabled 2008-01-16 22:20:21 +00:00
Stanislav Shwartsman
79fc57dec8 Fixed more VCPP2008 warnings 2007-12-26 23:07:44 +00:00
Stanislav Shwartsman
a93b0afdbe Merge page split detection method suggested by Darek Mihocka 2007-12-21 10:33:39 +00:00