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Author SHA1 Message Date
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
Aleksandar Andrejevic 9328c2226b [SOFT386] 
Implement opcode group 0xFE.


svn path=/branches/ntvdm/; revision=60453
 2013-09-29 16:07:06 +00:00
Aleksandar Andrejevic f7a2f36dd0 [SOFT386] 
Implement opcode groups 0xC6 and 0xC7.


svn path=/branches/ntvdm/; revision=60452
 2013-09-29 16:01:10 +00:00
Aleksandar Andrejevic 87a7896249 [SOFT386] 
Implement opcode group 0x8F.


svn path=/branches/ntvdm/; revision=60451
 2013-09-29 15:52:20 +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 0c91026f75 [NTVDM] 
Change the instruction in the interrupt handlers to "INC SP" twice
instead of one "ADD SP, 2". It's shorter and supported by soft386 already.


svn path=/branches/ntvdm/; revision=60397
 2013-09-28 00:55:28 +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