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75 commits

Author SHA1 Message Date
Aleksandar Andrejevic
489dfb314e [SOFT386] 
Fix bugs in SF calculation.


svn path=/branches/ntvdm/; revision=60687
 2013-10-16 02:22:40 +00:00
Aleksandar Andrejevic
4b14d9a672 [SOFT386] 
Start implementing call gate support.
Implement the direct far call opcode (0x9A).


svn path=/branches/ntvdm/; revision=60685
 2013-10-16 00:41:24 +00:00
Aleksandar Andrejevic
151db5ddd0 [SOFT386] 
Implement far returns (both versions in Soft386OpcodeRetFar).


svn path=/branches/ntvdm/; revision=60680
 2013-10-15 18:54:11 +00:00
Aleksandar Andrejevic
8d2a19ae5d [SOFT386] 
Implement far jumps.


svn path=/branches/ntvdm/; revision=60679
 2013-10-15 17:27:23 +00:00
Aleksandar Andrejevic
642b52c4e1 [SOFT386] 
Halfplement REPZ/REPNZ for CMPS and SCAS.


svn path=/branches/ntvdm/; revision=60658
 2013-10-13 23:59:52 +00:00
Aleksandar Andrejevic
4ad8a401ef [SOFT386] 
Implement the REP prefix for MOVS.
Fix the REP prefix in INS, OUTS and STOS to simulate the DI
wrap-around even if DF is set.


svn path=/branches/ntvdm/; revision=60645
 2013-10-13 21:15:01 +00:00
Aleksandar Andrejevic
a2e0e03ee6 [SOFT386] 
- Fix calculation of the AF flag in opcode groups 0xFE and 0xFF (INC/DEC).
- Fix a bug in the REP prefix by simulating the wrap-around of DI which
  can occur when the current address size is 16-bit.
- Exception error codes are only pushed on the stack in protected mode.


svn path=/branches/ntvdm/; revision=60625
 2013-10-11 23:45:42 +00:00
Aleksandar Andrejevic
da5b8fc439 [SOFT386] 
Fix prefix handling.


svn path=/branches/ntvdm/; revision=60620
 2013-10-11 20:48:19 +00:00
Aleksandar Andrejevic
47390630ed [SOFT386] 
Fix a bad call to RtlFillMemory.


svn path=/branches/ntvdm/; revision=60618
 2013-10-11 19:24:58 +00:00
Aleksandar Andrejevic
37059f6dfc [SOFT386] 
Fix incorrect (reverse) handling of the DF flag.


svn path=/branches/ntvdm/; revision=60617
 2013-10-11 19:02:06 +00:00
Aleksandar Andrejevic
caf9a0a671 [SOFT386] 
Implement the REP prefix for OUTS, LODS and STOS.


svn path=/branches/ntvdm/; revision=60616
 2013-10-11 18:34:31 +00:00
Aleksandar Andrejevic
20486fd1b7 [SOFT386] 
Clear the memory block before it's used.


svn path=/branches/ntvdm/; revision=60612
 2013-10-11 16:31:35 +00:00
Aleksandar Andrejevic
b22da55f8f [SOFT386] 
Implement the REP prefix for the INS instruction.


svn path=/branches/ntvdm/; revision=60600
 2013-10-10 19:01:41 +00:00
Aleksandar Andrejevic
182d7c8725 [SOFT386] 
Fix more prefix handling code.
Implement the XLAT instruction.


svn path=/branches/ntvdm/; revision=60586
 2013-10-09 00:36:37 +00:00
Aleksandar Andrejevic
9339e12e69 [SOFT386] 
Fix prefix handling.


svn path=/branches/ntvdm/; revision=60585
 2013-10-08 23:03:56 +00:00
Aleksandar Andrejevic
7078f183fb [SOFT386] 
Fix a bug in the CMP instruction.
Implement the SBB instruction.


svn path=/branches/ntvdm/; revision=60584
 2013-10-08 22:27:48 +00:00
Aleksandar Andrejevic
f10f82d938 [SOFT386] 
Start implementing extended opcodes.


svn path=/branches/ntvdm/; revision=60562
 2013-10-06 15:22:52 +00:00
Aleksandar Andrejevic
15a8cc4515 [SOFT386] 
Set the opcode handler for the INS and OUTS instructions to be
Soft386OpcodeIns and Soft386OpcodeOuts, respectively.


svn path=/branches/ntvdm/; revision=60543
 2013-10-05 20:12:08 +00:00
Aleksandar Andrejevic
fbcc4ad158 [SOFT386] 
Halfplement INS and OUTS.


svn path=/branches/ntvdm/; revision=60540
 2013-10-05 20:06:19 +00:00
Aleksandar Andrejevic
3593b8c8ef [SOFT386] 
Fix bugs in STOS and LODS (only one register is incremented).
Implement CMPS and SCAS.


svn path=/branches/ntvdm/; revision=60525
 2013-10-04 19:51:11 +00:00
Aleksandar Andrejevic
c190ca817c [SOFT386] 
Halfplement MOVS, STOS and LODS.
Stubplement CMPS and SCAS.


svn path=/branches/ntvdm/; revision=60515
 2013-10-03 20:56:36 +00:00
Aleksandar Andrejevic
c2e98bca7f [SOFT386] 
Implement the (undocumented) opcode SALC.


svn path=/branches/ntvdm/; revision=60492
 2013-10-01 15:02:07 +00:00
Aleksandar Andrejevic
17a32f3b2a [SOFT386] 
Change the license of Soft386 to GPLv2. The previous license was also
GPLv2, but it had a runtime linking exception. The new license is the
original GPLv2 with no exceptions.


svn path=/branches/ntvdm/; revision=60485
 2013-09-30 22:01:38 +00:00
Aleksandar Andrejevic
79355ae971 [SOFT386] 
Fix prefix handling.


svn path=/branches/ntvdm/; revision=60464
 2013-09-30 00:27:56 +00:00
Aleksandar Andrejevic
b9a1962978 [SOFT386] 
Fix the LOOP instruction. LOOP should loop while ECX is not zero, not otherwise.


svn path=/branches/ntvdm/; revision=60463
 2013-09-30 00:02:53 +00:00
Aleksandar Andrejevic
9331ef28b9 [SOFT386] 
Implement opcode group 0x80. Group 0x82 is just an alias to group 0x80.


svn path=/branches/ntvdm/; revision=60450
 2013-09-29 15:04:43 +00:00
Aleksandar Andrejevic
abf9647dd9 [SOFT386] 
Stubplement opcode group handlers.


svn path=/branches/ntvdm/; revision=60441
 2013-09-28 18:56:58 +00:00
Aleksandar Andrejevic
2812f2f8a5 [SOFT386] 
Disallow direct writing to CS. Changing CS must be done with a far jump.


svn path=/branches/ntvdm/; revision=60399
 2013-09-28 03:15:48 +00:00
Aleksandar Andrejevic
6db4f4e558 [SOFT386] 
Implement MOV for segment registers.


svn path=/branches/ntvdm/; revision=60398
 2013-09-28 03:01:07 +00:00
Aleksandar Andrejevic
cad18120fa [SOFT386] 
Fix the BOP opcode. It's LES AX, SP not LES AX, BP.


svn path=/branches/ntvdm/; revision=60396
 2013-09-28 00:46:04 +00:00
Aleksandar Andrejevic
7e119cf40b [SOFT386] 
Implement the LES and LDS instructions.
Add optional support for BOPs (NTVDM-specific).
Fix prefix handling in some functions.
[NTVDM]
Enable BOPs for Soft386 (when NEW_EMULATOR is defined).
Fix the calling convention issue (softx86 uses cdecl, soft386 uses stdcall).


svn path=/branches/ntvdm/; revision=60395
 2013-09-28 00:29:16 +00:00
Aleksandar Andrejevic
dc29fa9ab1 [SOFT386] 
Fix the return to VM86 mode. The VM flag must be set before the call to Soft386LoadSegment.


svn path=/branches/ntvdm/; revision=60393
 2013-09-27 21:23:34 +00:00
Aleksandar Andrejevic
78e8653765 [SOFT386] 
Halfplement the IRET instruction (everything except task switching).


svn path=/branches/ntvdm/; revision=60392
 2013-09-27 21:18:09 +00:00
Aleksandar Andrejevic
e05e583e56 [SOFT386] 
Implement the ENTER instruction.


svn path=/branches/ntvdm/; revision=60350
 2013-09-25 18:34:57 +00:00
Aleksandar Andrejevic
597a77ed3c [SOFT386] 
Implement the IMUL instruction. Both versions have been implemented in Soft386OpcodeImulModrm.


svn path=/branches/ntvdm/; revision=60344
 2013-09-23 17:29:42 +00:00
Aleksandar Andrejevic
442b56b45b [SOFT386] 
Implement the AAM and AAD instructions.


svn path=/branches/ntvdm/; revision=60342
 2013-09-23 16:03:23 +00:00
Aleksandar Andrejevic
b5a9d7490a [SOFT386] 
Implement the POPF instruction.


svn path=/branches/ntvdm/; revision=60341
 2013-09-23 14:10:14 +00:00
Aleksandar Andrejevic
432372c3b6 [SOFT386] 
Implement the MOV AL/AX/EAX, off16/32 and MOV off16/32, AL/AX/EAX instructions.


svn path=/branches/ntvdm/; revision=60289
 2013-09-21 18:44:59 +00:00
Aleksandar Andrejevic
60a7ff2e92 [SOFT386] 
Implement the PUSHF instruction.


svn path=/branches/ntvdm/; revision=60261
 2013-09-21 02:33:01 +00:00
Aleksandar Andrejevic
6a2d76ab68 [SOFT386] 
Fix prefix handling.


svn path=/branches/ntvdm/; revision=60260
 2013-09-21 02:18:41 +00:00
Aleksandar Andrejevic
9d7137b757 [SOFT386] 
Fix the CALL instruction. The offset must be fetched before EIP is pushed.


svn path=/branches/ntvdm/; revision=60259
 2013-09-21 01:00:36 +00:00
Aleksandar Andrejevic
34157419d7 [SOFT386] 
Implement the INT, INT3 and INTO instructions (all 3 in Soft386OpcodeInt).


svn path=/branches/ntvdm/; revision=60256
 2013-09-21 00:18:59 +00:00
Aleksandar Andrejevic
1d3d2fc07a [SOFT386] 
Implement the RET instruction.


svn path=/branches/ntvdm/; revision=60229
 2013-09-19 23:24:05 +00:00
Aleksandar Andrejevic
d3a6556ea5 [SOFT386] 
Implement JECXZ, LOOP, LOOPZ and LOOPNZ.


svn path=/branches/ntvdm/; revision=60226
 2013-09-19 22:48:45 +00:00
Aleksandar Andrejevic
3dc329ae81 [SOFT386] 
Implement the LEAVE instruction.


svn path=/branches/ntvdm/; revision=60201
 2013-09-18 21:13:40 +00:00
Aleksandar Andrejevic
f9dd2776ab [SOFT386] 
Fix the ARPL instruction.
Use "inline" instead of FORCEINLINE for static functions.


svn path=/branches/ntvdm/; revision=60195
 2013-09-17 23:12:25 +00:00
Hermès Bélusca-Maïto
85f05060e4 [SOFT386] 
- Put inlined functions in a .inl file, which gets included by the corresponding header file (i.e. fix MSVC builds).
- Use enums types instead of "only" INTs...

svn path=/branches/ntvdm/; revision=60193
 2013-09-17 23:02:22 +00:00
Aleksandar Andrejevic
bbb37c9152 [SOFT386] 
Implement Soft386OpcodeTestAl and Soft386OpcodeTestEax.
These functions were declared and referenced, but never defined.
Why the compiler allowed that without even a warning remains a mystery.


svn path=/branches/ntvdm/; revision=60183
 2013-09-17 20:28:26 +00:00
Aleksandar Andrejevic
b78a6cb212 [SOFT386] 
Implement the direct relative near call (CALL rel16/32) instruction.


svn path=/branches/ntvdm/; revision=60147
 2013-09-15 18:26:25 +00:00
Aleksandar Andrejevic
429d182d64 [SOFT386] 
Implement JMP rel16/32


svn path=/branches/ntvdm/; revision=60146
 2013-09-15 18:18:58 +00:00