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86 Commits

Author SHA1 Message Date
Volker Ruppert
2ea45c0e4d implemented volatile BIOS memory write support (controlled by PIIX/PIIX3 XBCS register) 2012-12-02 19:59:23 +00:00
Volker Ruppert
b560c72b52 - added check for overlapping memory regions using a Bit16u bitmap (each bit 
represents a 64k block in the 1M page)
- fixed some format warnings
 2012-09-23 19:09:20 +00:00
Volker Ruppert
ed669adfd1 - rewrite of the PCI memory management code for the expansion ROM and BIOS area 
- store memory type array in the memory object to avoid calling the pci plugin
    frequently. The pci code calls a memory method to change the memory type in
    case the PAM registers are modified.
  - removed now obsolete code and minor cleanups
 2012-01-19 18:32:11 +00:00
Stanislav Shwartsman
d3fe5c607e compilation fix 2011-12-02 20:11:57 +00:00
Stanislav Shwartsman
81f55b5be7 improved the fix for busmaster DMA transfers from device to memory done by Volker 2011-12-02 19:41:54 +00:00
Volker Ruppert
1f18f5831f - final fix for busmaster DMA transfers from device to memory: new memory method 
writePhysicalBlock() replaces the buggy code in iodev.h.
  Calling pageWriteStampTable.decWriteStamp(addr) is required here to make memcpy() work.
 2011-11-30 17:11:43 +00:00
Stanislav Shwartsman
d11114ac19 Patch for emulating target with larger memory than host has available by Gary Cameron. 
The patch was posted in mailing list at Thu 6/16/2011.

Desription for CHANGES:

- Memory
  - Added new configure option which enables RAM file backing for large guest
    memory with a smaller amount host memory, without causing a panic when
    host memory is exhausted (patch by Gary Cameron). To enable configure with
        --enable-large-ramfile option.
 2011-07-22 17:46:06 +00:00
Stanislav Shwartsman
f57b14d338 Extended the interface of the fetch handler to general direct memory access handler. 
Now the handler receives 'rw' (BX_READ, BX_WRTE, BX_EXECUTE) access type as parameter.
If returning a pointer to <addr> - itr is assumed that whole 4K page containing the <addr> could be accessed using the same pointer with offset.
You can return a pointer for READ/WRITE only and disallow execute, this is handled properly in the CPU code.
 2011-06-30 18:07:14 +00:00
Stanislav Shwartsman
84214f7119 added comment 2011-06-29 19:53:45 +00:00
Stanislav Shwartsman
03879cf90d added infrastructure for prefetch support in the memory handlers 2011-06-29 19:48:46 +00:00
Stanislav Shwartsman
00981cd7a6 Adding Id and Rev property to all files 2011-02-24 22:05:47 +00:00
Volker Ruppert
525e5a46f7 - moved array 'rom_present' to the memory class and initialize it at startup. 
This is required for the "second run" feature of the wx port. The simulation
  thread can be run multiple times without restarting the application.
 2011-02-11 15:33:08 +00:00
Stanislav Shwartsman
b5ebe5865e Fixes for incoming bug report, missed changes in CVS, repository fixups and etc 2011-02-11 09:56:23 +00:00
Volker Ruppert
2d57f0c3e9 - moved array 'rom_present' to the memory class and initialize it at startup 2011-02-10 23:00:16 +00:00
Stanislav Shwartsman
c7dba3525a Fixed warnings (patch from mailing list) 2010-08-15 19:57:50 +00:00
Stanislav Shwartsman
155c527e35 Enable 2M BIOS images 2010-05-18 09:01:08 +00:00
Stanislav Shwartsman
e3e797a2de ready to enlarge supported BIOS ROM to 2M 2010-05-18 08:54:01 +00:00
Stanislav Shwartsman
44885c4ef5 rom_present is not need to be BX_MEM_C member 2010-05-17 19:42:30 +00:00
Stanislav Shwartsman
11de02bd89 MONITOR/MWAIT: rewritten MONITOR/MWAIT implementation from scratch 2010-03-07 09:16:24 +00:00
Stanislav Shwartsman
bd60e0264c change Copyright to Bochs Project 2009-12-04 16:53:12 +00:00
Stanislav Shwartsman
d1a0303d43 Use 1M blocks to allocated memory - avoid crash with odd mem sizes 2009-10-24 14:37:44 +00:00
Stanislav Shwartsman
07222cc375 cleanup 2009-10-23 13:23:31 +00:00
Stanislav Shwartsman
da4722e257 optimize sr params 2009-10-16 18:29:45 +00:00
Stanislav Shwartsman
92aecadb18 allow to emulate more guest RAM that host could allocate, it is fine until guest tries to access all the allocated memory 2009-10-16 17:10:36 +00:00
Stanislav Shwartsman
140d2d1508 cleanups 2009-10-15 21:39:40 +00:00
Stanislav Shwartsman
a7680fe2ec remove unused function 2009-10-15 20:53:30 +00:00
Stanislav Shwartsman
3dbb1da68a remove "dirty" pages tracking - it is too memory consuming and can fit with >4G phy addr space 2009-10-15 20:50:33 +00:00
Stanislav Shwartsman
1b248b5212 fixes for future 2009-10-15 16:14:30 +00:00
Stanislav Shwartsman
5880d7f49c bugfix with phy addr long 2009-08-11 15:56:09 +00:00
Stanislav Shwartsman
f29b5a97d6 fixes with long phy addr 2009-08-10 08:08:25 +00:00
Stanislav Shwartsman
6fe0b40b44 move a20 handling into getHostAddr method of BX_MEM 2009-03-08 21:23:40 +00:00
Volker Ruppert
e5eac65b59 - removed wrong character from FSF address (converted invisible and useless 
2-byte character)
- updated FSF address in some files
- added license to some files
 2009-02-08 09:05:52 +00:00
Stanislav Shwartsman
9929e6ed78 - updated FSF address 2009-01-16 18:18:59 +00:00
Stanislav Shwartsman
d7fa44d270 optimize code access detection 2008-12-05 22:34:42 +00:00
Stanislav Shwartsman
f303d61cc1 Fixed 'dirty page' support in debugger 2008-07-26 14:44:26 +00:00
Stanislav Shwartsman
73d8bd3af4 Hide more memory variables 2008-05-01 20:28:36 +00:00
Stanislav Shwartsman
f5780a5f5c Hide some BX_MEM_C variables 
Optimize resolve16 methods - by reducing their amount again - reduce chance for misspredictin
 2008-05-01 20:08:37 +00:00
Stanislav Shwartsman
297087fea9 fixed memory handler params - use bx_phy_address data type 2008-04-29 22:14:23 +00:00
Stanislav Shwartsman
d8c77cc1ae Small cleanup for memory class 2008-04-17 20:20:43 +00:00
Stanislav Shwartsman
fda4d38959 32-bit systems have a problem to allocate large amount of physical memory for Bochs simulation which makes simulation with 4G address space virtually impossible. But in most of the cases when 4G physical address space defined - it is not touched by default on every run so it is possible to allocate only really accessed blocks. This commit made all necessary preparations for it. 2008-04-17 14:39:33 +00:00
Stanislav Shwartsman
fea49bb270 Fixed linear address wrap in legacy (not long64) mode 2008-04-07 18:39:17 +00:00
Stanislav Shwartsman
25a9b9fef1 whitespace cleanup again 2008-02-03 20:27:06 +00:00
Stanislav Shwartsman
92f7a3a805 Fixed several compilation errors under OSX 2007-12-10 19:05:07 +00:00
Stanislav Shwartsman
e137560b14 Complete MONITOR/MWAIT implemntation (including monitoring of memory range) 
Fixed PANIC in read/write Cr/Dr - should #UD with unkown register used
 2007-11-01 18:03:48 +00:00
Stanislav Shwartsman
071c5c1a26 A lot of changes but everything is really trivial. 
Make save/restore default feature, the configure option for save/restore removed from configure script and save/restore made available forever. All code now assume it is exists. Bochs save/restore tree previosly called "save_restore" renamed to "bochs" tree and it will be havily used everywhere, starting from save/restore and ending by various bochs debugger functions. I am going to rework debugger code to get rid of debug CPU access functions and use this "bochs" param tree instead
 2007-09-28 19:52:08 +00:00
Volker Ruppert
0c827dcbf1 - implemented debugger access to SMRAM area 2006-10-02 17:40:20 +00:00
Volker Ruppert
0a804aeb18 - memory cleanup code moved to a separate method (called from bx_atexit()) 
- fixed memory handler init and cleanup code (memory leaks)
 2006-09-15 17:02:52 +00:00
Volker Ruppert
a3908d6e86 - moved BX_USE_MEM_SMF to all the other SMF definitions in config.h.in (should 
be set to 1, since there is only one address space present)
- fixed memory object member to support the static case (SMF)
 2006-09-02 12:08:28 +00:00
Stanislav Shwartsman
594b8cce47 Fixed segfault with bochs debugger but reported today 2006-05-31 17:20:52 +00:00
Stanislav Shwartsman
4fd9bd53c3 Change Bit32u -> bx_phy_address in memory 2006-03-28 16:53:02 +00:00