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Author SHA1 Message Date
Michel Heily 3cc84b1b03 Model many things 
Former-commit-id: b87fa2b16b395f497cf217ea043e68404ab2f65e
 2019-07-06 15:54:07 +03:00
Michel Heily d1ef35646f Impl Thumb LdrStrImmOffset 
Former-commit-id: 17d6f4ae1cb5f68b9fccf35536a6346e88326e77
 2019-07-06 15:51:58 +03:00
Michel Heily 600bebc9d2 Partially Impl Arm LDM_STM (give me a break) 
Manually testing seems to work, too lazy to write any tests now,
Will do it after all instructions are complete, buggy or not.


Former-commit-id: 0f36c81d6451c706408dd3c4815bfb3abea1ff44
 2019-07-05 18:39:10 +03:00
Michel Heily 4da863da9b Fix carry flag on barrel shifter ops 
Former-commit-id: 31cf2166d97fcdcca0dd9c59591f5e28b5b5f6cc
 2019-07-05 18:31:08 +03:00
Michel Heily 638e449421 Impl Thumb 18 (Branch) 
Former-commit-id: 152dab739a1fa1b9d324084fc810b8540af9c3d7
 2019-07-05 16:21:24 +03:00
Michel Heily 74329c2a0b Never leave unfinished work.. 
Former-commit-id: 91acecdaf3ec7f9de892bd9f712e3cf521e08beb
 2019-07-05 16:10:21 +03:00
Michel Heily 0c50209735 Fix wrong calculation of conditional branch offset in Thumb mode 
Former-commit-id: 4cc28b13b19b2bf45e2b0e34d9a9dc0f83f82b01
 2019-07-05 16:01:16 +03:00
Michel Heily 37117257a6 Impl Thumb 10 (load store halfword) 
Former-commit-id: 0d5e88f200613b6df2b999ecbb855ce480e73322
 2019-07-05 15:50:14 +03:00
Michel Heily d4b6952411 Impl Thumb 19, fix warnings and rustfmt 
Former-commit-id: 8690aa25b1aa343b344776716b6213596bd1459a
 2019-07-05 15:34:52 +03:00
Michel Heily fb0d3acb14 Impl Thumb Format 1 untested 
Former-commit-id: e80617fd415ba951310a42c79b6ca37251d0e250
 2019-07-05 14:09:04 +03:00
Michel Heily 058760d7e4 Impl thumb Format4 
Former-commit-id: 7b8705ee7b76bbeb5b2a21e830d16db06ce8d63c
 2019-07-05 13:58:26 +03:00
Michel Heily 01290f6a28 Impl Thumb LdrStrSp 
Untested.


Former-commit-id: 8fa842d4969e30247fc1706dfe053c7dfbb37843
 2019-07-05 13:20:37 +03:00
Michel Heily be9499c76d Move cycle counting to CPU Core 
This isn't accurate, I'm probably missing something but at least it'll
make the instruction implementation more clean for now..


Former-commit-id: de24b15e1a51e1998207e5ea96fc8543f2553a26
 2019-07-05 13:08:07 +03:00
Michel Heily f8ebe26e5e Implement thumb format 13 
(NOT TESTED)


Former-commit-id: 160ee3a6c09a12cab53f69c94b385ea17666bd5f
 2019-07-05 03:46:04 +03:00
Michel Heily 5df9b6f317 Add thumb push-pop. 
Not tested, cycle modeling is crap


Former-commit-id: a5092dab79a1a660fc6c96a71f0908cc2054be27
 2019-07-05 03:28:02 +03:00
Michel Heily e66a8a9a3b Fix LR again :( 
Former-commit-id: 820315154ae58dcc29c4a8921094598f149b0255
 2019-07-05 03:27:23 +03:00
Michel Heily 2293300260 Add test for the bug fixed on e2a1303 
Former-commit-id: 98d0789aaf92a549cbe1b387461fd9acd4d773c0
 2019-07-04 02:06:41 +03:00
Michel Heily 702a08e30c Add many thumb instructions.. 
TODO add more tests for all the instructions I've got implemented so
far.
Also, I need to rewrite the whole "sysbus" module again because it's
crap and I keep refactoring it as I go.
I've added the "Dummy" because the bios for some reason tries to memzero
an unmapped region on the work ram (the thumb loop that ends at 0x126)


Former-commit-id: 67befd0935ee10df9ac8ceeaebd14f69767a7f16
 2019-07-04 01:56:50 +03:00
Michel Heily 984b17fa39 Fix arm mode STR insn 
Former-commit-id: 80903a9054e9b0dac07a5e2bb3cff7b0e722d438
 2019-07-04 01:56:11 +03:00
Michel Heily 923032f8cf REPL UI changes 
Former-commit-id: 6852b86541f967785dbffb6833fc2c11fa5dbef3
 2019-07-04 01:37:47 +03:00
Michel Heily 3541779fbf Fix LR when changing cpu modes 
Former-commit-id: 0ac911ee90758b9bffaafd459f1d9bca86d5064d
 2019-07-04 01:37:05 +03:00
Michel Heily 6a3d4358da Update .launch.json 
Former-commit-id: c922a1358c2a048d69c38e60734fc00ffa78a4a0
 2019-07-04 01:36:41 +03:00
= 28743702a1 Update waitstates for 256k work ram 
Former-commit-id: f5680c90e4ab4a9b29899cd5e0fe316d8227fc24
 2019-07-03 11:30:00 +03:00
MishMish c9df623d36 Update README.md 
Former-commit-id: 03b224b7de9735a1ed43dd7460fe5fa9ece147b4
 2019-07-03 02:23:36 +03:00
Michel Heily eaf972de93 Implement thumb format 6 (PC-Relative Load) and test it. 
Former-commit-id: ae161edb0c8968913d2ef72a14053c118c6f7692
 2019-07-03 02:15:16 +03:00
Michel Heily 58e1230e7a Model the cartidge. 
Former-commit-id: b51d2928631bfc438b9f1b15fafcaa9d90008179
 2019-07-03 01:40:08 +03:00
Michel Heily b82874809f Implement thumb format3 instruction and add a test for it. 
Former-commit-id: 8cf6664027dc3d5dbeb6d2ca3d089820baac2709
 2019-07-03 01:26:48 +03:00
Michel Heily 4011911cca Pass around "Bus" instead of "SysBus" 
Former-commit-id: c20dae7dd3ddcb3bd8f671a16fd67a241bd6c459
 2019-07-03 01:22:36 +03:00
Michel Heily 6f81c236a6 Mega Commit #2 - Add some thumb decoding and disassembly 
Former-commit-id: e3a89ac681a8d6f6f0bee85b32f64d181e11242f
 2019-07-03 00:03:35 +03:00
Michel Heily cbddeffd91 arm: Implement MSR_REG and fix some prefetching errors 
Former-commit-id: 177b8966159ed86472b0d4d031363df72d46807a
 2019-07-02 16:53:29 +03:00
Michel Heily 05fb40c17c debugger: Add Deref expression. 
i.e:
r5 = *r6
r5 = *(u8*)r6
r5 = *(u16*)0x08000000


Former-commit-id: 962dade8e3c0b9f291115285137cf51b0abde266
 2019-07-02 13:36:52 +03:00
Michel Heily 645e71ac40 Remove garbage file 
Former-commit-id: 906b8bc6f6b95ddc3565043ff4406a403e7ba08a
 2019-07-01 19:26:52 +03:00
Michel Heily 70179984d0 cpu: arm: Fix alu_add_update_carry function 
Woopsie


Former-commit-id: 2da74e4bfd4b59a2885519a99f4b2c3d83031ee2
 2019-07-01 19:25:42 +03:00
Michel Heily 2081b70ee2 cpu: arm: Fix R14 for branch with link instruction 
Former-commit-id: bc927d86e5a170b0e4568b4ceeb7832d23ad309c
 2019-07-01 19:24:52 +03:00
Michel Heily ea8c4f2a60 Refactor ArmInstructionFormat => ArmFormat 
Former-commit-id: 0ba6e1e6efedad55b2716b3f2ab5a2a629dd18a5
 2019-07-01 17:51:07 +03:00
Michel Heily 6b225d776d Implement all memory mappings. Reformat many files. 
Former-commit-id: c0a62b610e62d2db2a4daf4aeef40068820daa52
 2019-07-01 17:45:29 +03:00
Michel Heily 22c175d9cc Reorganize package structure 
Former-commit-id: d7ad26c07fc7063522fae061577f7ceece797ae5
 2019-07-01 16:15:42 +03:00
Michel Heily bd053354cb Implement LDR/STR (not tested) and add cycle counting 
Former-commit-id: ec9e6bfc2a94291e47d41ff7d839007879d3d694
 2019-06-30 16:59:37 +03:00
Michel Heily 98eee121fc Correct F flag behaviour when entrying an exception. 
Former-commit-id: b0ef6352d9f0c027657c6e5eeb615a131e9523d2
 2019-06-29 23:01:23 +03:00
Michel Heily 967ccca8dd Mega commit - model CPU pipelining. 
I except many bugs to arise..


Former-commit-id: bcc6ea57af803f783b0dd548b50956b3ccda2b1a
 2019-06-29 22:23:12 +03:00
Michel Heily 4c75970512 debugger: Detect error 
Former-commit-id: 1ea605eeab1a7b8e6645fe11d7b32c4c7dff0750
 2019-06-29 01:48:29 +03:00
Michel Heily 2238c7a72f Add demo gif to README.md 
Former-commit-id: 05ec55725c04cd4d4ca08471ea88b1b6b1b11e08
 2019-06-28 15:32:21 +03:00
Michel Heily c90448075f debugger: Fix breakpoint hit message 2019-06-28 15:07:29 +03:00
Michel Heily 64e0a02754 Add .vscode configuration for easy debugging 2019-06-28 15:05:18 +03:00
Michel Heily 3429b67c41 Fix test_decode_branch_backwards failing 2019-06-28 13:09:30 +03:00
Michel Heily 5245f0780c Update README.md 2019-06-28 13:05:48 +03:00
Michel Heily bd7fd472cf arm: Add tests for ldr/str 
And also test disassembling while at it..
 2019-06-28 12:36:19 +03:00
Michel Heily 7898bf61f3 arm: Fix bug when calculating 24bit branch offsets, and add a test for 
it.
 2019-06-28 12:01:49 +03:00
Michel Heily d11620e65b cpu: Add SWI instruction 
Also cleanup code, and add a test for swi decoding
 2019-06-28 11:46:36 +03:00
Michel Heily 1a0725f1a3 cpu: Model exceptions 2019-06-27 15:13:38 +03:00