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920 Commits

Author SHA1 Message Date
Thomas Harte
29a921f764 Remove TODO, add exposition. 2023-10-25 16:15:08 -04:00
Thomas Harte
a2826cdee5 Propagate address size. 2023-10-25 16:00:01 -04:00
Thomas Harte
3b62638b30 Remove dead DataPointerResolver and extra-conditional version of source(). 2023-10-25 14:43:58 -04:00
Thomas Harte
0c09c14baa Incorporate instruction length into offsets. 2023-10-25 13:02:43 -04:00
Thomas Harte
6dd5628dd6 Provide full pair for string conversion. 2023-10-25 11:21:11 -04:00
Thomas Harte
239ce75db6 Fix IN and OUT conversion. 2023-10-24 22:35:13 -04:00
Thomas Harte
cc9e8117ab Add note. 2023-10-24 16:43:22 -04:00
Thomas Harte
e36274e5c2 Add segment prefix for MOVS, LODS, etc. 2023-10-24 15:07:53 -04:00
Thomas Harte
0e027445d4 Don't offer repne for reps; print far CALLs and JMPs as h-suffix rather than 0x prefix. 2023-10-24 11:01:38 -04:00
Thomas Harte
20d7079006 Start adaptation to new test disassembly form. 2023-10-23 16:37:27 -04:00
Thomas Harte
7a4d74b8e4 Correct copy and paste error: 0x27 is DAA. 2023-10-23 10:07:57 -04:00
Thomas Harte
82c66e7433 Fix far jump with immediate operand. 
1655 failures remaining.
 2023-10-23 10:07:19 -04:00
Thomas Harte
817a30332c Take a swing at LEA r16, r16. 2023-10-22 22:15:27 -04:00
Thomas Harte
e3cdf113d1 Implement INS, OUTS. 2023-10-21 22:52:50 -04:00
Thomas Harte
aade91f043 Implement IN, OUT. 2023-10-21 22:37:25 -04:00
Thomas Harte
c2ebbe5ad9 Implement STOS with one failure. 2023-10-20 21:54:30 -04:00
Thomas Harte
4efc181f07 Fix memory handler, STOS. 2023-10-20 21:49:34 -04:00
Thomas Harte
93e90b09a0 Implement MOVS, STOS, revealing an issue in the memory handler. 2023-10-20 21:46:47 -04:00
Thomas Harte
dab3dcaafb Fix LODS: REP is not REPE. 2023-10-20 21:36:50 -04:00
Thomas Harte
8caad8b99d Document slightly. 2023-10-20 17:25:27 -04:00
Thomas Harte
bee094eba1 Add LODS; somehow manage to fail some of its tests. 2023-10-20 17:13:56 -04:00
Thomas Harte
bcebb2e520 Further reduce repetition overhead. 2023-10-20 17:08:11 -04:00
Thomas Harte
0f5e0e17a4 Fix address manipulation. 2023-10-20 17:03:23 -04:00
Thomas Harte
49ac2d8e0c Improve error reporting, remove some dead TODOs. 2023-10-20 17:00:32 -04:00
Thomas Harte
a71db54212 Simplify flow slightly; uncover issues in CMPSW. 2023-10-20 16:52:47 -04:00
Thomas Harte
efb854ddfa Fix repetition. Sufficient for tests. 2023-10-19 14:40:03 -04:00
Thomas Harte
387a952328 Reduce repetition. 2023-10-19 14:21:08 -04:00
Thomas Harte
f715cd89a9 Attempt CMPS, changing storage of direction; add flags check. 2023-10-19 14:07:59 -04:00
Thomas Harte
617be7cba7 Implement PUSHes and POPs. 2023-10-18 15:59:39 -04:00
Thomas Harte
02cea3047e Implement LOOP, LOOPE, LOOPNE. 2023-10-18 14:04:21 -04:00
Thomas Harte
a8c7871b0c Implement JCXZ. 2023-10-18 13:20:28 -04:00
Thomas Harte
90f49a6e73 Implement JMP. 2023-10-18 13:15:00 -04:00
Thomas Harte
440f3bdb10 Further improve error reporting. 2023-10-16 15:47:06 -04:00
Thomas Harte
89743f0ba0 Implement RET, IRET. 2023-10-16 15:40:24 -04:00
Thomas Harte
f1779e6067 Implement SHR. 2023-10-16 12:34:11 -04:00
Thomas Harte
e38fe7dffc Implement SAL, SAR. 2023-10-14 21:42:33 -04:00
Thomas Harte
f1cba4eb78 Implement remaining rolls. 2023-10-13 22:03:54 -04:00
Thomas Harte
f45d8bcbdb Implement RCR. 2023-10-13 21:44:48 -04:00
Thomas Harte
6f7991f54a Avoid loop. 2023-10-13 21:32:35 -04:00
Thomas Harte
6ec291d96f Move ownership of mask test. 2023-10-13 15:34:06 -04:00
Thomas Harte
1a0f848b21 Implement RCL. 2023-10-13 14:44:22 -04:00
Thomas Harte
bf832768e6 Implement XLAT. 2023-10-12 21:12:03 -04:00
Thomas Harte
d35377c776 Implement SALC, SETMO, SETMOC. 2023-10-12 15:52:05 -04:00
Thomas Harte
97d3a9fa78 Implement MOV. 2023-10-12 15:34:46 -04:00
Thomas Harte
da029ee344 Implement LEA. 2023-10-12 14:31:25 -04:00
Thomas Harte
cf846f501a Implement LDS, LES. 2023-10-12 14:24:28 -04:00
Thomas Harte
e948a67814 Implement SAHF, LAHF. 2023-10-12 13:54:51 -04:00
Thomas Harte
56e639e09a Add INT (including INT3), INTO. 2023-10-11 16:01:09 -04:00
Thomas Harte
e75ef70c96 Further generalise. 2023-10-11 15:08:04 -04:00
Thomas Harte
a768b101f8 Further clean up copy-and-paste mess. 2023-10-11 14:36:42 -04:00
Thomas Harte
7159366360 Collapse all flags accesses behind setters and getters. 2023-10-11 12:35:17 -04:00
Thomas Harte
033ba75376 Standardise repetitive sign/zero/parity sets. 2023-10-11 11:15:59 -04:00
Thomas Harte
fbd647080d Start factoring out useful ALU stuff. 2023-10-11 11:06:20 -04:00
Thomas Harte
4a803e2d43 Reduce ADD/ADC/SUB/SBB repetition. 2023-10-10 22:43:06 -04:00
Thomas Harte
7753497a93 Add header for std::swap. 2023-10-10 22:35:25 -04:00
Thomas Harte
a83b43a1ae Implement XCHG. 2023-10-10 22:34:42 -04:00
Thomas Harte
5125907048 Implement TEST. 2023-10-10 22:28:10 -04:00
Thomas Harte
08867f4970 Implement CMP. 2023-10-10 22:15:33 -04:00
Thomas Harte
d0a9b5cb81 Implement NEG, NOT. 2023-10-10 22:09:10 -04:00
Thomas Harte
0ecc319ee6 Add OR, XOR. 2023-10-10 17:12:06 -04:00
Thomas Harte
de95026076 Implement Jcc. 2023-10-10 16:27:06 -04:00
Thomas Harte
ec982444f7 Add getters to obscure internal flag storage. 2023-10-10 16:14:20 -04:00
Thomas Harte
f083eab011 Implement INC, DEC. 2023-10-10 15:57:33 -04:00
Thomas Harte
3d08953103 Add TODO. 2023-10-10 12:43:41 -04:00
Thomas Harte
dbf7d07609 Add DIV, faulty IDIV. 2023-10-10 10:34:18 -04:00
Thomas Harte
0412890923 Add STC, STD, STI. 2023-10-09 22:16:37 -04:00
Thomas Harte
5e830781cc Implement IMUL, improve test memory footprint. 2023-10-09 22:12:15 -04:00
Thomas Harte
ff6573dd02 Implement MUL. 2023-10-09 21:50:17 -04:00
Thomas Harte
e46e42d896 This is the same test either way around. 2023-10-09 16:47:02 -04:00
Thomas Harte
1cb26cb141 Pull add/sub distinction into templates. 2023-10-09 16:40:50 -04:00
Thomas Harte
f74ca8aee1 Fix SBB. 2023-10-09 16:32:01 -04:00
Thomas Harte
58aa1da649 Fix SUB. SBB still failing. 2023-10-09 16:30:47 -04:00
Thomas Harte
67d364cc89 Add faulty SUB, SBB. 2023-10-09 16:21:04 -04:00
Thomas Harte
d24fa381c7 'Implement' ESC, NOP. 2023-10-09 15:03:01 -04:00
Thomas Harte
fe6e2eb0a1 Generalise CBW. 2023-10-09 15:00:04 -04:00
Thomas Harte
08aed3bac5 Implement CWD. 2023-10-09 14:54:14 -04:00
Thomas Harte
6bbd896c34 Add DAS with a manageable number of failures. 2023-10-09 14:47:39 -04:00
Thomas Harte
0bf2099a70 Improve DAA. 2023-10-09 14:42:32 -04:00
Thomas Harte
1b9e6e8c8e Add DAA, which doesn't yet pass all tests. 2023-10-09 14:27:02 -04:00
Thomas Harte
59521f9d38 Implement CBW, CLC, CLD, CLI, CMC. 2023-10-09 11:59:38 -04:00
Thomas Harte
769aed10ea Reduce repetition. 2023-10-09 11:49:38 -04:00
Thomas Harte
5a77f0c93c Implement CALL. 2023-10-09 11:46:59 -04:00
Thomas Harte
4f14210ee0 Remove ideas discarded. 2023-10-08 22:27:01 -04:00
Thomas Harte
f618ca6046 Implement, test AND. 2023-10-08 22:18:40 -04:00
Thomas Harte
e3b18708c7 Handle segment-boundary word accesses. 
With all ADDs and ADCs enabled, no remaining failures.
 2023-10-08 22:11:05 -04:00
Thomas Harte
bd0b62232f Consider that displacements may always be signed. 
Down to 1 failure.
 2023-10-08 21:41:36 -04:00
Thomas Harte
dbfaef632a Fix DataPointer reference. 
Down from 4521 to 1248 failures within 00.json.gz
 2023-10-08 15:59:30 -04:00
Thomas Harte
0d2af80f7f Avoid access issues if there's no index. 2023-10-08 13:50:36 -04:00
Thomas Harte
6f768d9a3d Start climbing towards address resolution. 2023-10-08 13:47:43 -04:00
Thomas Harte
dd3cc1f510 Fix ADD and ADC sign flags. 2023-10-08 13:39:46 -04:00
Thomas Harte
a4b1d2b00a Float out data resolution. 2023-10-08 13:34:28 -04:00
Thomas Harte
5c62606154 Simplify parity logic. 2023-10-07 13:38:36 -04:00
Thomas Harte
16bf7c6f26 Fix include guard. 2023-10-07 13:31:35 -04:00
Thomas Harte
cf4603cb33 Attempt to check defined flags only. 2023-10-06 16:32:35 -04:00
Thomas Harte
b6d000ac5e Add enough wiring to consolidate failure on lazy handling of flags. 2023-10-06 13:22:35 -04:00
Thomas Harte
82f0cd790f Find first failing execution, note reason. 2023-10-06 11:43:18 -04:00
Thomas Harte
2d17d9d316 Execute some tests at some facile level. 2023-10-06 11:31:45 -04:00
Thomas Harte
a0ca0bb3c0 Mark non-templates as inline. 2023-10-06 11:11:29 -04:00
Thomas Harte
c6b311b84a Explain source of comments. 2023-10-06 11:10:54 -04:00
Thomas Harte
28c7d27cac Establish some proportion of state, ready to execute _something_. 2023-10-06 11:07:33 -04:00
Thomas Harte
90a8999b4b Fix typo. 2023-10-05 22:29:15 -04:00
Thomas Harte
6d392852d2 Hack on through to something that builds. 2023-10-05 22:27:52 -04:00
Thomas Harte
f411a961a3 Create a central location for avoiding segment conditionality. 2023-10-05 17:12:38 -04:00
Thomas Harte
ada411c0d8 It's differing mildly from DataPointResolver, but segue towards a world of real data. 2023-10-05 17:06:00 -04:00
Thomas Harte
eb100e3b29 Start reforming; data size plus register aren't independent in finding a source. 2023-10-05 16:49:02 -04:00
Thomas Harte
15acb1fc7c Add ADC and ADD. 2023-10-05 15:49:07 -04:00
Thomas Harte
09b2cfad8a Add AAM and AAS. 2023-10-05 14:52:24 -04:00
Thomas Harte
059f300500 Start fleshing out x86 performance. 2023-10-05 14:37:58 -04:00
Thomas Harte
524e4ae65c Tidy up just slightly more. 2023-10-05 11:26:52 -04:00
Thomas Harte
488fceb42b Clean up, add a TODO. 2023-10-05 11:23:58 -04:00
Thomas Harte
01851874ea I guess this is what a perform looks like. 2023-10-05 11:23:41 -04:00
Thomas Harte
7f6e3cf8b7 Define the available flags. 2023-10-05 10:51:55 -04:00
Thomas Harte
2d20175472 Explain absence. 2023-10-05 09:27:02 -04:00
Thomas Harte
6597283c34 Simplify roll/shift case. 2023-10-05 09:26:12 -04:00
Thomas Harte
f6fd49d950 Relocate all text wrangling; this isn't really test-specific. 2023-10-04 22:35:52 -04:00
Thomas Harte
40af162214 Be overt about what's here to aid with printing only. 2023-10-04 22:15:13 -04:00
Thomas Harte
92c46faf84 Add SETMO and SETMOC. 2023-09-29 22:28:23 -04:00
Thomas Harte
ff9237be9f Decode SALC. 2023-09-29 22:06:42 -04:00
Thomas Harte
6cbb434482 Deal with all dangling aliases. 
Leaves just five undocumented instructions.
 2023-09-29 15:36:34 -04:00
Thomas Harte
103f42f0b0 Introduce FF.7 alias. 2023-09-29 15:26:25 -04:00
Thomas Harte
f2732962d0 Add 6x 8086 aliases. 2023-09-29 15:22:05 -04:00
Thomas Harte
ef5ee8cf94 Include missing context on JMP/CALL far. 
Zero failing tests amongst official opcodes.
 2023-09-29 14:57:08 -04:00
Thomas Harte
1a6c8a2aed Add outputters for IN and OUT. 
2 failures remaining.
 2023-09-29 09:39:51 -04:00
Thomas Harte
b76899f2bc Undo broken extension-word DS assumption. 
8 failures.
 2023-09-28 22:17:14 -04:00
Thomas Harte
245919e67d Resolve REPNE and whitespace issues. 2023-09-28 22:01:12 -04:00
Thomas Harte
ae4a588de3 Adjust semantics to avoid culling end of relevant RETs. 2023-09-28 15:24:15 -04:00
Thomas Harte
960cca163e Make better guess at CALL/JMP size; apply same sizing-logic as offset for disassembly matching. 
13 failures.
 2023-09-28 14:52:42 -04:00
Thomas Harte
249da884a7 Trim trailing space. 2023-09-28 13:59:41 -04:00
Thomas Harte
035a1265f6 Map invalid reg numbers properly for the 8086. 
17 failures.
 2023-09-28 13:11:15 -04:00
Thomas Harte
ff4d79e77e Add test synonym, fix operand size. 
19 failures.
 2023-09-28 09:43:26 -04:00
Thomas Harte
78cb39ad67 Also fix AddrReg. 
24 failures.
 2023-09-27 22:47:14 -04:00
Thomas Harte
9207de4164 Fix RegAddr macro. 
26 failures.
 2023-09-27 22:44:10 -04:00
Thomas Harte
c20e7ed9b6 Fix TEST. 
28 failures.
 2023-09-27 22:30:40 -04:00
Thomas Harte
2d882d2153 Switch shift/roll semantics to reduce extension words and for sanity generally. 
37 failures.
 2023-09-27 16:40:46 -04:00
Thomas Harte
b59eae3676 Adopt normative ESC decoding. 
55 failures.
 2023-09-27 10:32:22 -04:00
Thomas Harte
5368f789f6 Shuffle list slightly. 2023-09-26 17:30:27 -04:00
Thomas Harte
b03b408984 Give the decoder responsibility for sanity-checking repetitions. 
This may avoid some spurious extension words.
 2023-09-26 17:29:20 -04:00
Thomas Harte
cd072e1b57 LEA implies a word. Otherwise add TODOs. 
So that's now 69 failures.
 2023-09-26 15:41:51 -04:00
Thomas Harte
f16ac603f2 Deal with printing segment:offset. 
70 failing files remaining.
 2023-09-26 15:28:51 -04:00
Thomas Harte
0a0051eb59 I've just been inconsistent with POP. Stop being so. 
71 failures from 288 tests.
 2023-09-26 15:16:41 -04:00
Thomas Harte
92c8e1ca93 Add missing #include. 2023-09-26 14:52:08 -04:00
Thomas Harte
87097c44b9 Curate list of known failures; apply easiest fixes. 
Now at 157 failures of 288 applicable tests.
 2023-09-25 11:39:12 -04:00
Thomas Harte
7fadf01e4e BP in isolation acts as a base. 2023-09-24 18:06:53 -04:00
Thomas Harte
d2b9c435e5 Allow for non-sign-extended offsets/displacements. 2023-09-24 15:00:16 -04:00
Thomas Harte
5fd98e9833 Add an ignore list. 
Leaves 180 failures amongst the valid 306 instructions.
 2023-09-22 22:56:33 -04:00
Thomas Harte
787e9e770e Retain baseless addresses correctly. 2023-09-22 17:27:27 -04:00
Thomas Harte
c8c0c3ca6d Default segment is ::DS if there was no base. 2023-09-22 17:03:40 -04:00
Thomas Harte
5a5f71e703 JMPs imply their size. 2023-09-22 17:00:10 -04:00
Thomas Harte
587ec81900 Improve string output, better to find actual errors. 
Still at 194/324 failures, but a lot of them seem reasonable.
 2023-09-22 11:24:33 -04:00
Thomas Harte
9f63db991c Capture default segments, fix base/index confusion. 2023-09-22 11:07:09 -04:00
Thomas Harte
7ebecd2f41 Add notes to self, finally figuring out segment issue. 2023-09-19 23:27:42 -04:00
Thomas Harte
6f5fcf23dc Add missing substitutions. 2023-09-19 14:00:27 -04:00
Thomas Harte
02fcaf0dbd JCXZ seems to be preferred over JPCX. 2023-09-19 13:56:48 -04:00
Thomas Harte
a7cf7d3183 Resolve LOOPNE, LOOPE, etc. 2023-09-19 13:55:19 -04:00
Thomas Harte
9b3199d97b Reduce failures to 205/324. 2023-09-19 13:45:19 -04:00
Thomas Harte
e5dfc882cb Agree that JZ/JNZ are clearer (for me) of the synonyms. 2023-09-19 13:38:08 -04:00
Thomas Harte
3582d2c9e3 Start to beef up operand count list. 2023-09-18 16:34:52 -04:00
Thomas Harte
da953fdf0d Complete 8086 operation list; standardise enum order. 2023-09-18 16:25:04 -04:00
Thomas Harte
710017ada2 Largely resolve the operation-name problem. 2023-09-18 15:57:26 -04:00
Thomas Harte
f8dc5b8ebc Attempt to get close on index + base addresses. 2023-09-17 17:05:19 -04:00
Thomas Harte
f039d44ee3 Fully handle rm = 6, mod = 0. 2023-09-15 22:08:20 -04:00
Thomas Harte
7ee5adc481 Forcing a displacement upon BP reduces to 29 failures. 
(At the current limited fidelity of testing)
 2023-09-15 16:09:04 -04:00
Thomas Harte
a5038259bc Add admission. 2023-08-21 19:30:34 -04:00
Thomas Harte
bb84a5a474 Enable various ADB-controller interrupts. 2023-08-21 15:35:13 -04:00
Thomas Harte
3e09afbb59
Remove errant square bracket. 2023-06-21 11:57:09 -04:00
Thomas Harte
8578dfbf22 Eliminate various other errant spaces. 2023-05-16 16:40:09 -04:00
Thomas Harte
50343dec43 Eliminate all whitespace-only lines. 2023-05-12 14:16:39 -04:00
Thomas Harte
28c79b2885 Eliminate redundant [space][tab] pairs. 2023-05-12 14:14:45 -04:00
Thomas Harte
60bec3d4c0 Eliminate trailing whitespace, fix tabs. 2023-05-12 14:03:38 -04:00
Thomas Harte
2b56b7be0d Simplify namespace syntax. 2023-05-10 16:02:18 -05:00
Thomas Harte
315e0b4545 Add experimental 6809 opcode decoder. 
Just a pleasant distraction, for now.
 2023-03-17 21:20:35 -04:00
Thomas Harte
8808014a85 Add AddressingMode::ExtensionWord to the executor. 2022-12-19 11:07:58 -05:00
Thomas Harte
6832cbeb31 Attempt fully to tie together 68020+ addressing. 2022-12-19 10:38:51 -05:00
Thomas Harte
08b3c42a5c Edge further towards supporting full extension words. 2022-12-10 16:22:16 -05:00
Thomas Harte
95c526d957 Start arrangements for full extension words. 2022-11-30 16:21:35 -05:00
Thomas Harte
5813e2b6c6 Round out the list of operand flags. 2022-11-14 15:58:58 -05:00
Thomas Harte
ccadf69630 Add test of operand_flags and operand_size; add entries for missing 68000 and 68010 instructions. 2022-10-31 15:15:05 -04:00
Thomas Harte
bbd2cd47ea Decode [MUL/DIV][U/S].l. 2022-10-30 11:32:36 -04:00
Thomas Harte
63ad2e8263 Decode EXTB.l. 2022-10-30 11:20:43 -04:00
Thomas Harte
255d2f3486 Attempt LINK.l and CHK.l. 2022-10-29 21:42:53 -04:00
Thomas Harte
6ad1d74ddd Parse and record duality of CHK2/CMP2. 2022-10-29 21:32:48 -04:00
Thomas Harte
12ca79e645 Decode CAS2. 2022-10-28 14:02:49 -04:00
Thomas Harte
85df54ee7d Decode CAS. 2022-10-28 13:57:00 -04:00
Thomas Harte
8a8c044976 Support up to 15 extension words on a Preinstruction; use that to describe PACK/UNPK. 
TODO: reconcile when to use that field versus the ExtensionWord operand. Probably only when operands are full?
 2022-10-28 13:36:40 -04:00
Thomas Harte
f6a72dc2b4 Switch BFEXTU and BFFFO. 2022-10-27 12:13:13 -04:00
Thomas Harte
7d82b2ad12 Fix PACK operation code. 2022-10-27 10:52:07 -04:00
Thomas Harte
c2b8cbfefc Add text conversions. 2022-10-27 10:12:52 -04:00
Thomas Harte
53140c016e Disable bitcodes for operations that aren't otherwise yet present. 2022-10-27 10:09:16 -04:00
Thomas Harte
3f80df1feb Additional TST modes become available on the 68020. 2022-10-27 09:49:20 -04:00
Thomas Harte
cabf1a052c Fill in operand sizes and flags for the 68010 extensions. 2022-10-27 09:39:00 -04:00
Thomas Harte
8ff9f27b91 Decode MOVES. 2022-10-26 13:34:01 -04:00
Thomas Harte
ae2419e283 Decode MOVEC. 2022-10-26 12:50:15 -04:00
Thomas Harte
c1f0eed0a3 Decode MOVE from CCR. 2022-10-26 12:39:40 -04:00
Thomas Harte
4e5a80e23a Fix model tests. 2022-10-25 22:36:00 -04:00
Thomas Harte
46fee9c53a Add BKPT and RTD. 2022-10-25 22:35:44 -04:00
Thomas Harte
7ba6c78d14 MOVE from CCR, MOVEC and MOVES are on the 68010. 2022-10-25 21:27:23 -04:00
Thomas Harte
83b9fc3318 Declare TRAPcc operand size. 2022-10-25 12:20:40 -04:00
Thomas Harte
1ceabb30b0 Fully decode TRAPcc. 2022-10-25 12:19:03 -04:00
Thomas Harte
f8cb3ca8b5 Resolve transient GCC warning. 2022-10-25 10:20:06 -04:00
Thomas Harte
d8a11eaba7 Avoid explicit specialisation in non-namespace scope. 2022-10-25 10:13:12 -04:00
Thomas Harte
ab37b00356 Add model constraint to DIVS.l. 2022-10-25 10:04:36 -04:00
Thomas Harte
b4fcf92a62 Output extension words as if immediates. 2022-10-25 09:58:01 -04:00
Thomas Harte
38c531fd5a Accept that a uint8_t isn't always going to be large enough; split decoding by minimum processor. 2022-10-25 09:50:19 -04:00
Thomas Harte
8c670d2105 Add decodes for TRAPcc and PACK, discovering it's three operand (sort of). 2022-10-23 11:46:47 -04:00
Thomas Harte
9a56d053f8 Introduce/extend 68k enums to cover 68020 instruction set. 2022-10-22 15:20:30 -04:00
Thomas Harte
cb0e259339 Start the process of decoding 68020 operations. 2022-10-21 15:28:29 -04:00
Thomas Harte
ec728ad573 Fix ADD/SUBX carry. 2022-10-19 22:17:51 -04:00
Thomas Harte
bc9ddacb8d Improve commentary. 2022-10-19 14:40:29 -04:00
Thomas Harte
979bf42541 Fix ASL overflow test. 2022-10-18 22:43:17 -04:00
Thomas Harte
d09473b66f Move common negative and zero logic into Status. 2022-10-18 14:51:51 -04:00
Thomas Harte
b31b4a5d10 Reformulate NOT in terms of EOR, and clean up elsewhere. 2022-10-18 12:17:55 -04:00
Thomas Harte
5560a0ed39 Fix overflow test for ASL. 2022-10-18 11:47:36 -04:00
Thomas Harte
a1ae7c28b2 Add various insurances against undefined behaviour. 2022-10-18 11:30:40 -04:00
Thomas Harte
fb2b7969a2 Add TODO to self on undefined behaviour. 2022-10-17 23:14:14 -04:00
Thomas Harte
abb19e6670 Populate carry whenever count != 0, regardless of modulo. 2022-10-17 22:57:21 -04:00
Thomas Harte
555250dbd9 Don't trample on X before use. 2022-10-17 22:19:35 -04:00
Thomas Harte
8148397f62 Fill in comments, eliminate u/s_extend16 macros. 2022-10-17 15:37:13 -04:00
Thomas Harte
f095bba1ca Eliminate bitwise macros. 2022-10-17 15:21:54 -04:00
Thomas Harte
ee3a3df0b5 Eliminate SBCD macro. 2022-10-17 15:12:38 -04:00
Thomas Harte
aff1caed15 Clean up formatting. 2022-10-17 15:05:23 -04:00
Thomas Harte
da03cd58c1 Add overt casting. 2022-10-17 15:04:28 -04:00
Thomas Harte
ce98ca4bdd Pull RO[L/R][X]m out of their macro stupor. 2022-10-17 11:27:04 -04:00
Thomas Harte
cc55f0586d Clean up ASL/ASR/LSL/LSRm. 2022-10-17 11:18:10 -04:00
Thomas Harte
47e8f3c0f1 Collapse [A/L]S[L/R].[bwl] into a template. 2022-10-16 22:21:20 -04:00
Thomas Harte
d5ceb934d2 Fix overflow flags, avoid bigger-word usage. 2022-10-16 21:52:00 -04:00
Thomas Harte
17c1e51231 Commute ROL/ROR to templates. 2022-10-16 12:19:09 -04:00
Thomas Harte
fee072b404 Commute ROXL and ROXR into a template. 2022-10-16 12:06:28 -04:00
Thomas Harte
0a9c392371 Remove unused bit_count. 2022-10-13 15:01:06 -04:00
Thomas Harte
06dbb7167b Unify TST. 2022-10-11 21:31:14 -04:00
Thomas Harte
eff9a09b9f Collapse MOVE and NEG[X] similarities. 2022-10-11 21:27:18 -04:00
Thomas Harte
1f19141746 Eliminate BiggerInt. 2022-10-11 16:19:47 -04:00
Thomas Harte
28093196b9 Convert DIVU/DIVS logic to a template. 2022-10-11 16:16:53 -04:00
Thomas Harte
eb206a08d9 Templatise MULU/MULS. 2022-10-11 16:02:20 -04:00
Thomas Harte
b2f005da1b Collapse SR/CCR bitwise operations into a template. 2022-10-11 15:53:11 -04:00
Thomas Harte
8305a3b46a Consolidate compare logic. 2022-10-11 12:57:02 -04:00
Thomas Harte
f3f23f90a3 Consolidate repetition in CLR. 2022-10-11 11:22:34 -04:00
Thomas Harte
77bc60bf86 Consolidate BCLR, BCHG and BSET into a macro. 2022-10-11 10:47:55 -04:00
Thomas Harte
ec5d57fefe Eliminate 64-bit work. 2022-10-11 10:33:28 -04:00
Thomas Harte
58396f0c52 Perform a prima facie conversion of ADD/SUB[/X] from macros to templates. 2022-10-10 22:21:13 -04:00
Thomas Harte
451b730c8e Avoid returning without value in release builds. 2022-09-09 16:48:12 -04:00
Thomas Harte
72b6ab4389 Provide a route to operation that factors in addressing mode. 2022-09-06 11:26:16 -04:00
Thomas Harte
effe8c102d Provide a direct to_string on Operation. 2022-09-05 21:52:20 -04:00
Thomas Harte
b6f45d9a90 Fix struct/class confusion. 2022-08-10 15:40:46 -04:00
Thomas Harte
8ada73b283 Use the outer switch for addressing mode dispatch, saving a lot of syntax. 2022-06-13 08:57:49 -04:00
Thomas Harte
71e38a6781 Fix decoding of RESET. 2022-06-03 11:15:50 -04:00
Thomas Harte
02b6ea6c46 Factor out would-accept-interrupt test, per uncertainty re: level 7. 2022-06-03 08:31:56 -04:00
Thomas Harte
c3b436fe96 Use int64_t as an intermediary to avoid x86 exception on INT_MIN/-1. 2022-06-02 21:39:52 -04:00
Thomas Harte
659e4f6987 Include fixed cost of rolls. Which includes providing slightly more information to did_shift. 2022-06-01 20:30:51 -04:00
Thomas Harte
75e85b80aa Factor out the common stuff of exception state. 2022-06-01 08:20:33 -04:00
Thomas Harte
73815ba1dd No need for this hoop jumping here. 2022-06-01 08:20:06 -04:00