mirrors/Bochs
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity
7,890 Commits 11 Branches 185 Tags 48 MiB
1fab3d734a
Commit Graph

223 Commits

Author SHA1 Message Date
Stanislav Shwartsman
dbb6c1c5ae i- Partially fixed x87 Underflow/Overflow (#P) unmasked responce 2008-09-02 19:46:30 +00:00
Stanislav Shwartsman
4682a38248 - Fixed x87 Inexact Result (#P) unmasked responce 2008-09-02 05:36:15 +00:00
Stanislav Shwartsman
9e9bc9aeeb Do not touch fdp/fds fields in x87 if not memory instruction 2008-08-23 10:48:38 +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
3223d7c004 Added missed prepare_FPU 2008-07-14 18:54:10 +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
5abee4819e Indent and style changes 2008-07-13 11:22:55 +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
f331919d63 indent + FPU debug print fixes 2008-05-19 20:00:42 +00:00
Stanislav Shwartsman
307d75f632 Optimizations in FPU tag word handling - compress FPU tag word internally and expose only when calling for tag word read operations (only 4 instructions) 2008-05-10 13:34:01 +00:00
Stanislav Shwartsman
177b4831a8 Another fix for C1 bit clear/set 2008-05-10 10:15:01 +00:00
Stanislav Shwartsman
15e772964d Fixes with C1 bit clear/set 2008-05-10 09:17:24 +00:00
Stanislav Shwartsman
f182f11a8e - significantly improve FPU debug print 
- update FPU TW before saving FPU state by FNSAVE or FNSTENV
 2008-05-05 21:23:33 +00:00
Stanislav Shwartsman
46f93681e7 Fixed FBSTP instruction signed zero corner case, indent changes 2008-05-04 21:22:42 +00:00
Stanislav Shwartsman
7fe502bae8 Better format for FPU state dump 2008-04-30 20:41:15 +00:00
Stanislav Shwartsman
66282a2078 Fixed FRSTOR instruction 2008-04-27 20:43:38 +00:00
Stanislav Shwartsman
4ecadb915b Fixed FPU tags after FLDENV instruction 2008-04-26 20:24:20 +00:00
Stanislav Shwartsman
f17928ead0 Remove debug prints 2008-04-26 19:56:48 +00:00
Stanislav Shwartsman
ee88a125e7 for FPU instruction which load data from memory we should access memory first and only then check if it FPU stack overflow 
memory access might fault before
 2008-04-26 19:38:53 +00:00
Stanislav Shwartsman
40bceb55fa Fixed floating point opcode masking 2008-04-26 12:14:58 +00:00
Stanislav Shwartsman
0609d7e7ce Handle undocumented FPU opcodes 2008-04-21 14:17:48 +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
c26d9d563c Missed include file 2008-04-04 21:10:30 +00:00
Stanislav Shwartsman
3f5263a142 Compilation fixes that allow to disable FPU by just setting BX_SUPPORT_FPU=0 2008-04-04 21:05:37 +00:00
Stanislav Shwartsman
bb1195f1e6 move denormals_are_zeros to fpu_specialize.h 2008-04-04 20:02:36 +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
eebd96e2d7 another whitespace cleanup by Sebastien 2008-02-05 22:33:35 +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
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
917a040cc4 Fixed more VCPP2008 warnings 2007-12-26 18:39:15 +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
b516589e4e Changes in write_virtual_* and pop_* functions -> avoid moving parameteres by pointer 2007-12-20 18:29:42 +00:00
Stanislav Shwartsman
e51184c8cf Eliminate saving of RSP from heart of cpu_loop 
Now save RSP only where it is really required
 2007-11-24 14:22:34 +00:00
Stanislav Shwartsman
754e43baed FOO is 11 bit only field 2007-10-30 18:52:25 +00:00
Stanislav Shwartsman
d30a0d3699 warning fixes 2007-10-24 23:29:40 +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 :) 
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
efbcc99e9a get rid of ugly do/while(0) construction 2007-09-14 19:39:11 +00:00
Stanislav Shwartsman
9612691aad Debug print changed to look a bit better 2007-09-11 13:11:03 +00:00
Stanislav Shwartsman
412eeeeb7c Get crregs definition to separate file from cpu.h 2007-09-10 16:00:15 +00:00
Stanislav Shwartsman
38d1f39c77 Converted CR0 bits to one register similar to CR4 - a bit slower but helps with other features implemntation 2007-07-09 15:16:14 +00:00
Stanislav Shwartsman
5189cfbf10 SSE4 support 2007-04-19 16:12:21 +00:00
Stanislav Shwartsman
b6c8275cfd remove old PIT model and always use Greg Alexander's new one 2007-04-08 21:57:06 +00:00
Stanislav Shwartsman
1ab3297115 FCOMI are P6 instructions 2007-04-02 10:46:57 +00:00
Stanislav Shwartsman
26f08fdb2c Change my e-mail to #SF one 2007-03-23 21:27:13 +00:00
Stanislav Shwartsman
c7e732fc8c Merged patch from #SF site tracker 2006-09-08 11:26:04 +00:00
Stanislav Shwartsman
ea1127f235 Correctly detect inexact result in FPU (patch by No Name) 2006-08-28 18:48:51 +00:00
Stanislav Shwartsman
f8c3968d42 Changes list made after CVS service crash: 
- Fixed critical bug in CPU code added with one of the prev commits
  - Disasm support for SSE4
  - Rename PNI->SSE3 everywhere in the code
  - Correctly decode, disassemble and execute 'XCHG R8, rAX' x86-64 instruction
  - Correctly decode, disassemble and execute multi-byte NOP 0F F1 opcode
  - Fixed ENTER and LEAVE instructions in x86-64 mode
  - Added ability to turn ON instruction trace, only GUI support is missed.
    Instruction trace could be enabled if Bochs was compiled with disasm
  - More changes Bit32u -> bx_phy_address
  - Complete preliminary implementation of SMM in Bochs, SMI is still PANICs but if you press 'continue' everything should work OK
  - Small code cleanup
  - Update CHANGES and user docs
 2006-04-05 17:31:35 +00:00
Stanislav Shwartsman
7b6c2587a9 Now devices could be compiled separatelly from CPU 
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
7cfa31492c Removed --enable-pni configure option, to compile with PNI use 
--enable-sse=3 instead (Stanislav Shwartsman)
 2006-02-20 19:28:57 +00:00
Stanislav Shwartsman
765951b1a5 Fix problem in FLDENV/FSTENV instructions 2006-01-29 17:37:23 +00:00
Stanislav Shwartsman
356cb066d4 Reverting back last commit from Kevin. 
Both Intel and AMD docs say that fldenv should fault on pending exceptions.
(#MF If an unmasked x87 floating-point exception was pending)
 2006-01-28 21:31:20 +00:00
Kevin Lawton
2b45a94893 fldenv does not fault on pending exceptions. Reversed the order of 
the checks.
 2006-01-28 20:52:08 +00:00
Kevin Lawton
88183335e9 Patch "info fpu": 
o uses FPRi instead of ST(i)" (which was not quite right, as ST(0) was not the FPR at the TOP but alwasy fpr0).
  o shows the TOP, and the tag as {s,d,e,?}.
 2006-01-21 00:05:30 +00:00
Stanislav Shwartsman
ab4367604c Fixed compilation error when fpu-enabled and cpu-level=3 2005-08-13 17:40:41 +00:00
Stanislav Shwartsman
afe3ff691d Another fix for FPU tag word restore in FXRESTOR instruction (the tags were assigned to incorrect registers) 
Fixed FPU print state status word printing (printed partial status instead of normal status word)
 2005-06-18 20:46:08 +00:00
Stanislav Shwartsman
d10731f162 Update my e-mail in source files 
Update committed SF patches in changes
 2005-05-12 18:07:48 +00:00
Stanislav Shwartsman
e01789b276 Add CVS header for FPU files 2005-03-20 21:19:38 +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
f45316a2b1 Change possibly broken BX_MIN_BIT16S to its real value 2005-02-16 21:36:16 +00:00
Stanislav Shwartsman
acd1d8f14f Merged patch 
[1104695] msvc6 compatibility update (Royce Mitchell III)
 2005-01-19 18:21:40 +00:00
Volker Ruppert
02ae558db8 - removed old unused code designed for a save/restore feature 
- 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
1a6656ce91 Fixed compilation warnings (g++, -Wall) 
Improve speed and precision of FPATAN FPU instruction
 2004-11-04 22:41:24 +00:00
Stanislav Shwartsman
283f9ae5d2 Simplify cpu.h 
Speedup FYL2X and FYL2XP1 instructions
 2004-09-14 20:19:54 +00:00
Stanislav Shwartsman
a7eef1d526 Significanly improve accuracy of FYL2X and FYL2XP1 
Optimize FMUL instructions
 2004-07-31 20:19:38 +00:00
Stanislav Shwartsman
f9bd2b74be 1. Fixed bug in FSUB instruction 
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
8d1989fb25 Fix exceptions mismatch in FXTRACT instruction 2004-07-24 19:26:50 +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
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
Stanislav Shwartsman
26664e8044 optimize 2004-06-26 12:35:48 +00:00
Stanislav Shwartsman
becac7f01d Fixed denirmal arguments for FADD/FSUB instructions 2004-06-25 20:02:41 +00:00
Stanislav Shwartsman
2a0a361298 Implemented precision lost up indication in floating point status word 2004-06-25 18:51:28 +00:00
Stanislav Shwartsman
1a1e237599 return back copyright info 2004-06-22 19:10:06 +00:00
Stanislav Shwartsman
afecedcb1b improve occuracy of FYL2XP1 instruction 2004-06-22 18:58:33 +00:00
Stanislav Shwartsman
5873b26a82 Speed up compilation process. 
bochs.h already not include iodev.h which reduces compilation dependences for almost all cpu and fpu files, now cpu files will not be recompiled if iodev includes was changed
 2004-06-19 15:20:15 +00:00
Stanislav Shwartsman
17e28e0f66 Fix merge error 
Update CHANGES
 2004-06-18 15:14:50 +00:00
Stanislav Shwartsman
cfa2da1ba7 Delete unused files 2004-06-18 14:21:25 +00:00
Stanislav Shwartsman
5c5b556f24 Merge softfloat-fpu-implementation_ver4_branch branch 2004-06-18 14:11:11 +00:00
Volker Ruppert
25582ed29d - fixed cpu/Makefile.in after renaming file 
- reg_ld_str.c: fixed regparm argument (bugfix found in SuSE 9.1 sources of Bochs 2.1.1)
 2004-05-17 19:50:43 +00:00
Stanislav Shwartsman
3274e0dd12 Commit patch 
[ 950905 ] Do not PANIC on rare, bad input from user-mode
by h.johansson
with little changes and fixes
 2004-05-10 21:05:51 +00:00
Stanislav Shwartsman
cf6d1b8bd9 port some changes from spftfloat-fpu branch to the MT 2004-04-09 15:34:59 +00:00
Stanislav Shwartsman
a8b57836a2 all these files should be in branch only for now 2004-04-09 12:52:49 +00:00
Stanislav Shwartsman
04124133c0 freeze softfloat-fpu-ver3 branhc and open it for free testing 
I will continue the development in new softfloat-fpu-ver4 branch
Current version already implements ALL FPU instructions except
   FSIN, FCOS, FSINCOS, FPTAN, FPATAN, FYL2XP1, F2XM1, FYL2X
I think it solved all currently reported bugs and feature requests
related to FPU code.
Please write your own test programms and test the implemntation in all ways you can.
Thanks,
Stanislav
 2004-04-09 12:29:50 +00:00
Stanislav Shwartsman
78a2976b49 backport some softfloat changes to CVS 2004-03-19 18:11:10 +00:00
Stanislav Shwartsman
1f77d0c844 clean fpu code 2004-03-06 13:33:49 +00:00
Stanislav Shwartsman
f5316dad70 fixed bug in HADDPD/HSUBPD instructions 2004-03-05 09:19:58 +00:00
Stanislav Shwartsman
ab4915925c update dependencies in fpu makefile 2004-02-21 13:02:43 +00:00
Daniel Gimpelevich
b19967ca22 Allow compiling with gcc 2.95.2 2004-02-20 01:41:59 +00:00
Daniel Gimpelevich
d5a0677b06 Allow compiling with gcc 2.95.2 2004-02-20 01:30:52 +00:00
Daniel Gimpelevich
1c295d9654 Allow compiling with gcc 2.95.2 2004-02-20 00:54:22 +00:00
Stanislav Shwartsman
196aee98d7 Fix for FWAIT instruction 2004-02-12 21:34:28 +00:00
Stanislav Shwartsman
8e88595465 removed fpu reentrant checking (we are know that FPU is not reentrant) 
fixed code duplication in fpu_tags.c
 2004-02-11 19:40:25 +00:00
Daniel Gimpelevich
72f787b555 Made to compile on MacOS9 2004-02-10 00:23:12 +00:00
Daniel Gimpelevich
126971af49 Made to compile on MacOS9 2004-02-06 22:28:00 +00:00
Daniel Gimpelevich
fff74a6f83 Fixed incompatibility with gcc3.3, I think. 2003-11-28 15:07:29 +00:00
Stanislav Shwartsman
902f655bb7 Fixed compilation error 2003-11-25 19:34:34 +00:00
Stanislav Shwartsman
e8961bb65d dos2unix fpu_compare 
update changes file
 2003-11-01 18:45:16 +00:00
Stanislav Shwartsman
66549cc16b Implemented FCMOVcc instructions. 
Removed undocumented FPU opcodes, they are not supported by real CPUs
 2003-11-01 18:36:19 +00:00
Stanislav Shwartsman
885dd35d19 clear unused code 2003-10-31 11:06:23 +00:00