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e2fb91925e825bf5ba9debdfbed75faaa8d0e331
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31 Commits
Author SHA1 Message Date
Aleksandar Andrejevic b456a8b355 [FAST486] 
Make the parameters to Fast486ReadModrm*Operands optional, so that
unnecessary extra reads aren't performed. This also eliminates the
need for dummy variables.


svn path=/branches/ntvdm/; revision=61055
 2013-11-20 08:01:10 +00:00
Aleksandar Andrejevic cdf876ead9 [FAST486] 
Fix the BSF and BSR instructions. Partially fix SHLD and SHRD.


svn path=/branches/ntvdm/; revision=60987
 2013-11-14 02:39:54 +00:00
Aleksandar Andrejevic cd496c8e21 [FAST486] 
XADD: Fix the order of operations.
POP <modrm>: The value must be popped from the stack before parsing the
Mod-Reg-R/M, because of the "POP DWORD [ESP]" case.


svn path=/branches/ntvdm/; revision=60984
 2013-11-13 22:33:37 +00:00
Aleksandar Andrejevic ace025dca9 [FAST486] 
The bit number should be normalized to [0, DataSize- 1], not [0, 2 ^ DataSize - 1].


svn path=/branches/ntvdm/; revision=60975
 2013-11-13 18:14:01 +00:00
Aleksandar Andrejevic 2da0e38fbc [FAST486] 
In rotate operations, the count is always masked with 0x1F, regardless
of the operand size.


svn path=/branches/ntvdm/; revision=60966
 2013-11-12 19:25:50 +00:00
Aleksandar Andrejevic ac9f8a81e3 [FAST486] 
Don't forget to check for the operand/address size prefix.


svn path=/branches/ntvdm/; revision=60964
 2013-11-12 18:40:13 +00:00
Aleksandar Andrejevic f3df799dc2 [FAST486] 
Implement the LSS instruction.
Fix a bug in LFS and LGS.


svn path=/branches/ntvdm/; revision=60935
 2013-11-11 03:14:18 +00:00
Aleksandar Andrejevic 153e815f93 [FAST486] 
We don't support in-circuit emulation opcodes such as USERMOV.
The 486 does not have the JMPE or POPCNT instructions.


svn path=/branches/ntvdm/; revision=60932
 2013-11-11 01:14:24 +00:00
Aleksandar Andrejevic 83b597be5a [FAST486] 
Implement SHLD and SHRD.


svn path=/branches/ntvdm/; revision=60930
 2013-11-11 00:57:59 +00:00
Aleksandar Andrejevic 43bbc0afb4 [FAST486] 
Implement the two operand version of IMUL.


svn path=/branches/ntvdm/; revision=60929
 2013-11-11 00:10:46 +00:00
Hermès Bélusca-Maïto a106a3b21e [FAST486]: Code formatting only (remove endlines spaces). 
svn path=/branches/ntvdm/; revision=60894
 2013-11-09 14:23:40 +00:00
Aleksandar Andrejevic 4f4d9fe5d2 [FAST486] 
Implement LFS, LGS and MOVZX.


svn path=/branches/ntvdm/; revision=60878
 2013-11-07 01:06:39 +00:00
Aleksandar Andrejevic 01c10ef5aa [FAST486] 
Implement BSF, BSR and MOVSX.


svn path=/branches/ntvdm/; revision=60877
 2013-11-07 00:57:08 +00:00
Hermès Bélusca-Maïto 92ce0174ac [FAST486]: Code formatting only. 
svn path=/branches/ntvdm/; revision=60857
 2013-11-03 23:13:53 +00:00
Hermès Bélusca-Maïto 3b6b1a7f37 [FAST486]: Replace (boolean_condition) ? TRUE : FALSE; by: (boolean_condition) . 
svn path=/branches/ntvdm/; revision=60856
 2013-11-03 22:44:55 +00:00
Aleksandar Andrejevic dcbdbb7d9f [FAST486] 
Implement opcode group 0x0F, 0x01 (SGDT, SIDT, LGDT, LIDT, SMSW and LMSW).
Only INVLPG is not implemented yet.


svn path=/branches/ntvdm/; revision=60824
 2013-11-01 22:39:43 +00:00
Aleksandar Andrejevic 20c0db9f08 [FAST486] 
Implement the XADD instruction.


svn path=/branches/ntvdm/; revision=60819
 2013-11-01 02:48:28 +00:00
Hermès Bélusca-Maïto 2c8e8ba5d3 [FAST486] 
- Remove an unneeded inclusion to the CRT header: limits.h (and use instead NDK definitions for max/min long values).
- Remove unneeded comments...
[NTVDM]
Remove an unneeded add_dependencies(...) command.

svn path=/branches/ntvdm/; revision=60767
 2013-10-27 11:42:44 +00:00
Aleksandar Andrejevic dfd1c031d6 [FAST486] 
Implement the CLTS instruction.


svn path=/branches/ntvdm/; revision=60752
 2013-10-26 17:33:10 +00:00
Aleksandar Andrejevic 1525a235a2 [FAST486] 
Implement the MOV instruction for control and debug registers.
Remove definitions for non-existant registers CR1, CR4, CR5, CR6 and CR7.
The standard 80486 doesn't have a CR4 register (although some implementations
of the 80486 had large page support and CR4, it was not reliable).
As for the debug registers, DR4 is the same as DR6, and DR5 is the same as DR7.


svn path=/branches/ntvdm/; revision=60747
 2013-10-26 00:56:11 +00:00
Aleksandar Andrejevic 87f5903d48 [FAST486] 
Implement extended opcode groups 0xB9 (UD2) and 0xBA (BT/BTS/BTR/BTC).


svn path=/branches/ntvdm/; revision=60745
 2013-10-25 18:15:24 +00:00
Aleksandar Andrejevic 67b093f38c [FAST486] 
Create a macro SWAP (swaps two variables) to shorten the code.
Implement the BSWAP instruction.


svn path=/branches/ntvdm/; revision=60717
 2013-10-20 00:55:31 +00:00
Aleksandar Andrejevic a93095e678 [FAST486] 
Implement BT, BTS, BTR and BTC.


svn path=/branches/ntvdm/; revision=60716
 2013-10-20 00:25:41 +00:00
Aleksandar Andrejevic 1a968e6f61 [FAST486] 
Fix more prefix handling.
Create the macros TOGGLE_ADSIZE and TOGGLE_OPSIZE to shorten the code.


svn path=/branches/ntvdm/; revision=60715
 2013-10-19 23:43:53 +00:00
Aleksandar Andrejevic 75a0ca07a1 [FAST486] 
Implement CMPXCHG.


svn path=/branches/ntvdm/; revision=60712
 2013-10-19 18:56:58 +00:00
Aleksandar Andrejevic a98544e517 [FAST486] 
Implement PUSH/POP FS/GS.


svn path=/branches/ntvdm/; revision=60711
 2013-10-19 18:36:04 +00:00
Aleksandar Andrejevic ca7d21eff4 [FAST486] 
The 80486 doesn't have any time stamp counter (TSC) at all.


svn path=/branches/ntvdm/; revision=60710
 2013-10-19 18:28:27 +00:00
Aleksandar Andrejevic d3bc33ee5d [FAST486] 
And add those newly implemented opcodes into the table...


svn path=/branches/ntvdm/; revision=60708
 2013-10-19 18:00:19 +00:00
Aleksandar Andrejevic 7105c52d86 [FAST486] 
Implement SETO, SETNO, SETC, SETNC, SETZ, SETNZ, SETBE, SETNBE, SETS, SETNS, SETP
SETNP, SETL, SETNL, SETLE and SETNLE.


svn path=/branches/ntvdm/; revision=60706
 2013-10-19 17:57:26 +00:00
Aleksandar Andrejevic 2583e4f51e [FAST486] 
Remove TODOs for instructions that don't exist on the 80486.


svn path=/branches/ntvdm/; revision=60704
 2013-10-19 17:29:44 +00:00
Hermès Bélusca-Maïto 51040fc61e Bye bye Soft386, welcome Fast486, courtesy Aleksandar Andrejevic. 
[NTVDM]: Define by default NEW_EMULATOR, i.e. use Fast486 instead of softx86.

svn path=/branches/ntvdm/; revision=60703
 2013-10-19 16:55:51 +00:00