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Author SHA1 Message Date
Aleksandar Andrejevic
6bbc6fef9a [SOFT386] 
Allow the DS segment to overriden in LODS, MOVS and CMPS.


svn path=/branches/ntvdm/; revision=60689
 2013-10-16 03:44:06 +00:00
Aleksandar Andrejevic
40ed113494 [SOFT386] 
Implement the far absolute indirect JMP/CALL instructions in group 0xFF.


svn path=/branches/ntvdm/; revision=60688
 2013-10-16 03:14:12 +00:00
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
1df88c9d1d [SOFT386] 
Implement the near absolute indirect JMP/CALL in opcode group 0xFF.


svn path=/branches/ntvdm/; revision=60686
 2013-10-16 01:44:39 +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
2f4594cf30 [SOFT386] 
Implement the PUSH instruction in opcode group 0xFF.


svn path=/branches/ntvdm/; revision=60681
 2013-10-15 19:03:40 +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
c425bbc689 [SOFT386] 
Implement Soft386Interrupt.
[NTVDM]
Implement EmulatorInterrupt and EmulatorExternalInterrupt for NEW_EMULATOR.


svn path=/branches/ntvdm/; revision=60628
 2013-10-12 13:58:34 +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
8dff09c37a [SOFT386] 
Improve the performance of Soft386CalculateParity.


svn path=/branches/ntvdm/; revision=60621
 2013-10-11 20:54:46 +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
800969b126 [SOFT386] 
Fix a bug in Soft386ExceptionWithErrorCode. The instruction pointer exceptions can
return to should point to the instruction that caused the exception.


svn path=/branches/ntvdm/; revision=60603
 2013-10-11 12:24:05 +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
aef0bf1635 [SOFT386] 
Implement an API for external segment modification.
[NTVDM]
Implement EmulatorSetRegister for NEW_EMULATOR.


svn path=/branches/ntvdm/; revision=60591
 2013-10-09 21:48:52 +00:00
Aleksandar Andrejevic
e9829f1830 [SOFT386] 
Fix the carry flag in the SAR instruction.


svn path=/branches/ntvdm/; revision=60589
 2013-10-09 19:49:41 +00:00
Aleksandar Andrejevic
10523b910e [SOFT386] 
Don't single-step on a prefix. Single-step should execute one whole instruction.


svn path=/branches/ntvdm/; revision=60588
 2013-10-09 19:11:42 +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
f25d1a9f2a [SOFT386] 
Implement opcode group 0xF7.


svn path=/branches/ntvdm/; revision=60582
 2013-10-07 20:38:01 +00:00
Aleksandar Andrejevic
95b0bb7b60 [SOFT386] 
Implement opcode group 0xF6.


svn path=/branches/ntvdm/; revision=60568
 2013-10-06 23:57:41 +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
0043c2f377 [NTVDM] 
Properly handle the case when the console framebuffer could not be created.


svn path=/branches/ntvdm/; revision=60526
 2013-10-04 21:16:58 +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
49616f8975 [SOFT386] 
Halfplement group 0xFF (Only INC/DEC).


svn path=/branches/ntvdm/; revision=60487
 2013-10-01 01:31:36 +00:00
Aleksandar Andrejevic
5ef6274619 [SOFT386] 
Fix the header in soft386.h.


svn path=/branches/ntvdm/; revision=60486
 2013-09-30 22:13:51 +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
1294b156ea [SOFT386] 
Fix previous fix.


svn path=/branches/ntvdm/; revision=60468
 2013-09-30 03:10:38 +00:00
Aleksandar Andrejevic
d4d6e6eca9 [SOFT386] 
Fix limit check.


svn path=/branches/ntvdm/; revision=60467
 2013-09-30 03:05:08 +00:00
Aleksandar Andrejevic
6bde6a89b7 [SOFT386] 
Fix previous fix.


svn path=/branches/ntvdm/; revision=60466
 2013-09-30 02:28:17 +00:00
Aleksandar Andrejevic
462be21fd0 [SOFT386] 
Remove whitespace from empty line.
Fix addressing bug.


svn path=/branches/ntvdm/; revision=60465
 2013-09-30 02:06:55 +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
ed24b5ee8e [SOFT386] 
Fetching the immediate operand once is sufficient.


svn path=/branches/ntvdm/; revision=60462
 2013-09-29 23:45:06 +00:00
Aleksandar Andrejevic
747864f105 [SOFT386] 
Move the code for ADD/OR/ADC/SBB/AND/SUB/XOR/CMP to Soft386ArithmeticOperation,
and use that function to implement groups 0x80, 0x81, 0x82 and 0x83.


svn path=/branches/ntvdm/; revision=60461
 2013-09-29 23:38:31 +00:00
Aleksandar Andrejevic
fce8b3f276 [SOFT386] 
The immediate operand should be fetched before attempting to read the
MOD-REG-R/M byte operands.


svn path=/branches/ntvdm/; revision=60460
 2013-09-29 22:24:46 +00:00
Aleksandar Andrejevic
6605a6f215 [SOFT386] 
Implement opcode groups 0xC0 and 0xC1, also using Soft386RotateOperation.
Remove two unnecessary blank lines.


svn path=/branches/ntvdm/; revision=60459
 2013-09-29 22:23:01 +00:00
Aleksandar Andrejevic
e365b99113 [SOFT386] 
Move the ROL/ROR/RCL/RCR/SHL/SHR/SAL/SAR handling code to Soft386RotateOperation,
then use that to implement opcode groups 0xD0, 0xD1, 0xD2 and 0xD3.


svn path=/branches/ntvdm/; revision=60458
 2013-09-29 22:15:32 +00:00
Aleksandar Andrejevic
4490103840 [SOFT386] 
Implement opcode group 0xD0 (instructions ROL, ROR, RCL, RCR, SHL, SHR, SAL, SAR).


svn path=/branches/ntvdm/; revision=60455
 2013-09-29 18:39:59 +00:00