Github_Repos/cvw
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241 Commits

Author SHA1 Message Date
Kevin Kim
6d146a7e20 formatting 2023-03-07 10:57:52 -08:00
Kevin Kim
833e7bd2af shifter sign generation logic optimize 2023-03-07 10:57:06 -08:00
Kevin Kim
81198ce6f6 reverted backing to working version 2023-03-07 00:29:58 -08:00
Kevin Kim
5637897dce reverted to working version 2023-03-07 00:28:07 -08:00
David Harris
7ecf4cdea8 Fixed bug about rv64 shifts only using 6 bits of funct7 2023-03-06 13:10:51 -08:00
David Harris
7e0c96cdcc Simplified decoder default to illegal instruction 2023-03-06 11:21:11 -08:00
David Harris
c2efdbdbbb More detailed decoding of load/store/branch/jump 2023-03-06 11:15:48 -08:00
David Harris
a56557d847 Improved decoding illegal instructions in controller 2023-03-06 11:02:42 -08:00
Kevin Kim
c7d1e35d4a structural changes in cnt.sv 2023-03-06 06:44:15 -08:00
Kevin Kim
e67b02136c formatting 2023-03-06 06:20:25 -08:00
Kevin Kim
ee66b5fb4a formatting 
- reverted back to ALUResult signal in alu.sv
 2023-03-06 06:19:01 -08:00
Kevin Kim
8f3acedec8 formatted files 2023-03-06 05:52:08 -08:00
Kevin Kim
fb529e1640 updated license header 2023-03-06 05:41:53 -08:00
Kevin Kim
e80c1248a2 bug fix 2023-03-05 15:20:48 -08:00
Kevin Kim
3dbdf3d579 extend unit structural mux 2023-03-05 15:09:02 -08:00
Kevin Kim
696cfb6949 zbb result select mux structural 2023-03-05 14:57:30 -08:00
Kevin Kim
2ae32f75b5 zbc input mux structural 2023-03-05 14:26:31 -08:00
Kevin Kim
77d8f10574 revA signals to cnt, zbb 2023-03-05 14:26:24 -08:00
Kevin Kim
7836bc1e37 ALU changes 
- added PreShiftAmt signal for shadd
- condinvB now muxes from B instead of mask
 2023-03-05 14:06:24 -08:00
Kevin Kim
0f2360f0d7 bug in bctrl 
- deleted the min/minu decoding for some reason.
 2023-03-04 23:56:33 -08:00
Kevin Kim
6b25c64a1f BSelect from OH encoding to Binary 2023-03-04 23:19:31 -08:00
Kevin Kim
a293c350ba alu pre-shift 
-changed ALU pre shift logic to use a 2 bit shifter instead of mux
 2023-03-04 23:07:06 -08:00
Kevin Kim
7512e55699 added python script 
-I've been using this python script to make quick changes to the bitmanip controller
 2023-03-04 22:54:32 -08:00
Kevin Kim
9494cf9340 removed rotate signal in datapath and instead packed into the new BALUControl Signal 
- BALUControl contains Rotate, Mask, PreShift signals to select from the respective generation muxes in the ALU
 2023-03-04 22:44:03 -08:00
Kevin Kim
f5dca0bf4f zbc result mux is now structural 2023-03-04 09:22:21 -08:00
Kevin Kim
72de867e65 Rotate signal now gets generated in bmu ctrl 2023-03-03 22:57:49 -08:00
Kevin Kim
b315066b03 license comments 2023-03-03 21:52:34 -08:00
Kevin Kim
0403cfd41a removed redundant signals in controller 2023-03-03 21:52:25 -08:00
Kevin Kim
8dd39fbcfb b controller generates comparison signed flag and controller branch signed logic updated accordingly 2023-03-03 17:12:29 -08:00
Kevin Kim
5e01f86bc5 sltD signal debug. Passes regression 2023-03-03 12:44:33 -08:00
Kevin Kim
c836eea17c sltD logic optimize 2023-03-03 12:35:40 -08:00
Kevin Kim
d6f8c1dd29 Merge branch 'bctrlmigrate' of https://github.com/kipmacsaigoren/cvw into bctrlmigrate 2023-03-03 09:54:08 -08:00
Kevin Kim
1c55d4a8d5 Merge branch 'openhwgroup:main' into bctrlmigrate 2023-03-03 09:53:59 -08:00
Kevin Kim
422b428cba removed outdated b-signals in controller 2023-03-03 08:45:42 -08:00
Kevin Kim
9cad890c1a comments to bctrl 2023-03-03 08:41:47 -08:00
Kevin Kim
19410b4196 migrated B-subarith logic into b controller 2023-03-03 08:40:29 -08:00
Kevin Kim
2c3271dd62 began subarith configurability optimization in controller 2023-03-03 08:27:11 -08:00
Ross Thompson
cfca77172e Added fence counter. 2023-03-02 23:29:20 -06:00
Kevin Kim
b21ca2fba0 bug fix, more elegant logic changes in controller 2023-03-02 16:00:56 -08:00
Kevin Kim
c9bd37c92b formatting 2023-03-02 15:28:43 -08:00
Kevin Kim
910eeea3ff removed main instruction decoder dependence on bmu controller 2023-03-02 15:28:33 -08:00
Kevin Kim
05b329dd6a added bitmanip illegal instruction signal 2023-03-02 15:09:55 -08:00
Kevin Kim
3e8e633a56 zbc comments 2023-03-02 13:52:00 -08:00
Kevin Kim
b0307f5082 formatted bmu decoder 2023-03-02 13:45:15 -08:00
Kevin Kim
24b0b83d52 moved ALUControlD into configurable block 2023-03-02 12:17:03 -08:00
Kevin Kim
0f60505179 moved SubArith and RegWriteE into configurable block 2023-03-02 12:15:57 -08:00
Kevin Kim
b81a5e4452 added BRegWriteE signal 2023-03-02 12:15:22 -08:00
Kevin Kim
5e10720bed rename shifternew to shifter 2023-03-02 11:45:32 -08:00
Kevin Kim
cf324510f3 zbc input select mux optimize 2023-03-02 11:43:05 -08:00
Kevin Kim
657719220a zbc select mux optimization 2023-03-02 11:40:29 -08:00
Kevin Kim
e62a752522 fixed controller lint, changed byte unit mux select name and input width 2023-03-02 11:36:12 -08:00
Kevin Kim
a5e2e24320 removed redundant zbs 2023-03-02 11:22:09 -08:00
Kip Macsai-Goren
58ab6ec805 Merge remote-tracking branch 'upstream/main' into bit-manip 2023-02-28 14:41:51 -08:00
Kevin Kim
df0d75034b bitmanip decoder spits out regwrite, w64, and aluop signals [NEEDS DEBUG] 2023-02-28 12:09:35 -08:00
Kevin Kim
b61d881c1b added BRegWrite, BW64, BALUOp signals to bctrl and controller 
-TODO: Main decode in bmuctrl must assert these 3 signals
 2023-02-28 11:54:10 -08:00
Kevin Kim
692e406976 changed shifter source select signal name 2023-02-28 11:41:40 -08:00
Kevin Kim
1506d50c63 rename result back to ALUResult in ALU 2023-02-28 07:27:34 -08:00
David Harris
cf8b5f0783 Added support for ZMMUL 2023-02-27 07:29:53 -08:00
Kevin Kim
f5d3e0e8a0 removed old shifter 2023-02-24 17:33:47 -08:00
Kevin Kim
601c6fcdc4 removed now-redundant zero-extend mux in alu 2023-02-24 17:14:12 -08:00
Kevin Kim
1d4200e3a3 took sign extension out of shifter 2023-02-24 17:09:56 -08:00
Kevin Kim
00a0170b30 optimized mux to shifter, passes rv32/64i 2023-02-24 12:09:34 -08:00
Kevin Kim
8b6d699857 small optimization to condzext select 2023-02-23 21:57:28 -08:00
Kip Macsai-Goren
67f83cda7f Fixed lint errors on zero and pop count. All of regression passes 2023-02-22 20:25:51 -08:00
Kip Macsai-Goren
ba3bfdf68b Manual attempt to merge with upstream changes 2023-02-22 19:42:30 -08:00
Kip Macsai-Goren
d668c563f4 Merge remote-tracking branch 'upstream/main' into main 2023-02-21 14:48:41 -08:00
Kevin Kim
35bd4f7219 added individual zb tests in tests.vh and testbench 
- also minor alu/controller configurability changes
 2023-02-21 11:52:05 -08:00
David Harris
a445e53e8d Fixed Issue #106: fld rasies load access fault instead of illegal instruction. The IEU controller had considered all fp loads and stores to be legal regardless of whether the FPU is enabled or the type is supported. Merged illegal instruction detection from both units into the Decode stage, saving two bits of pipeline register as well. 2023-02-21 09:32:17 -08:00
Kevin Kim
0f876c3111 B DONE (for now) 
- datapath passes along comparator flag to alu
-  controllers and zbb handle min/max instructions
 2023-02-18 22:12:55 -08:00
Kevin Kim
2319661b10 controlleres and zbb handle byte instructions 2023-02-18 21:06:55 -08:00
Kevin Kim
e7339902ae alu and controllers handle andn, orn, xnor 2023-02-18 20:57:07 -08:00
Kevin Kim
59e9c7c747 added logic to handle sign/zero extend instructions 2023-02-18 20:32:40 -08:00
Kevin Kim
ad63699aac fixed ctlzw bug in count unit 2023-02-18 20:12:30 -08:00
Kevin Kim
ecfcad20a0 zbb handles count instructions 2023-02-18 20:12:17 -08:00
Kevin Kim
543dc1e36a fixed bmuctrl decode bug 2023-02-18 20:11:50 -08:00
Kevin Kim
446327215d updated comments in bmuctrl 2023-02-18 19:57:10 -08:00
Kevin Kim
baff2c9362 rotate instructions now handled in ZBB unit 2023-02-18 19:56:54 -08:00
Kevin Kim
e4085764e7 removed redundant decode logic in bmuctrl 2023-02-18 19:50:36 -08:00
Kevin Kim
f18cd53dee began ZBB integration into ieu 2023-02-18 19:44:14 -08:00
Kevin Kim
5f56f72bb1 bmuctrl handles roriw 2023-02-18 16:26:16 -08:00
Kevin Kim
2ccbde9d09 configured shifter in alu 2023-02-17 21:58:49 -08:00
Kevin Kim
f85c1058ff shifter bug fix 
- roli not passing unless I keep the MSB (instead of inverting) of truncated offset
 2023-02-17 21:58:26 -08:00
Kevin Kim
77fc40149f controller supports some rotates 2023-02-17 21:57:34 -08:00
Kevin Kim
5e7ed8804f bmuctrl supports some rotates 2023-02-17 21:57:19 -08:00
Kevin Kim
9af0ffe3a9 added zero extend, pre-shift mux to ALU 2023-02-17 20:15:12 -08:00
Kevin Kim
cad0973b6b more elegant ZBA logic in controller 2023-02-17 20:14:47 -08:00
Kevin Kim
88d7c3b1f2 bmuctrl handles .uw instructions 2023-02-17 20:14:13 -08:00
Kevin Kim
01f3cc2838 controller supports ZBA instructions 2023-02-17 16:44:16 -08:00
Kevin Kim
b09d942d60 removed Funct7 in Execute Stage 2023-02-17 16:12:09 -08:00
Kevin Kim
a1570a88c9 bmuctrl checks for illegal zbs-style instructions 2023-02-17 12:54:08 -08:00
Kevin Kim
370ff54875 bctrl bug fix 
- bctrl decodes shift immediate instructions properly
 2023-02-17 11:16:29 -08:00
Kevin Kim
aba4eb80d4 alu bug fix 
- condmaskb piped in correctly instead of b
 2023-02-17 11:02:07 -08:00
Kevin Kim
07eaf146c2 alu looks at BSelect, added BSelect one hot signal 2023-02-17 09:51:49 -08:00
Kevin Kim
323d14f9d9 added alu changes to previous commit 2023-02-17 08:22:13 -08:00
Kevin Kim
44c9612a5c added BSelect Signal 
- BSelect [3:0] is a one hot encoding of if it's a ZBA_ZBB_ZBC_ZBS instruction
 2023-02-17 08:21:55 -08:00
Kevin Kim
ada6023a41 comments 2023-02-17 07:53:14 -08:00
Kevin Kim
ab542a5bc3 comments 2023-02-17 07:52:54 -08:00
Kevin Kim
290fcd1789 comment formatting 2023-02-17 07:51:28 -08:00
Kevin Kim
5b341ac3a7 alu handles ALU select instead of funct3 2023-02-17 07:51:10 -08:00
Kevin Kim
ff365de54a added BMU controll 2023-02-17 07:50:59 -08:00
Kevin Kim
f0c81247e4 Added ALUSelect signal into datapath, ieu, controller 2023-02-17 07:50:45 -08:00
David Harris
0d2baed943 Reverted lab3 changes in dev branch 2023-02-16 18:10:05 -08:00
David Harris
33eb5423cb Update datapath.sv 2023-02-16 17:53:31 -08:00
David Harris
113b124721 Update controller.sv 2023-02-16 17:52:44 -08:00
David Harris
43afa34338 Update alu.sv 2023-02-16 17:52:25 -08:00
Kevin Kim
921a32faf9 added comments to zbc units 2023-02-15 17:42:32 -08:00
Kevin Kim
50f0262498 zbc configurability and select mux 2023-02-15 17:39:37 -08:00
Kevin Kim
cd13913f07 controller forwards funct7 
- started the bmu controll register
 2023-02-15 17:38:12 -08:00
Kevin Kim
8feeaa5e94 zbc and carry-less multiply work properly 2023-02-15 17:37:09 -08:00
Kevin Kim
2eb8721843 continued ZBC integration into ALU 2023-02-15 09:35:07 -08:00
Kevin Kim
2a58a86371 added ALUResult Signal 2023-02-15 09:13:10 -08:00
Kevin Kim
27817c5b1d controller passes funct7 from decode to execute 2023-02-14 16:06:10 -08:00
Kevin Kim
857097282c git 2023-02-14 16:03:26 -08:00
Kevin Kim
420a0209dd Merge branch 'tmp' into main 2023-02-14 13:12:57 -08:00
Kevin Kim
7b7957594e removed unncessary stuff 2023-02-14 13:07:03 -08:00
Kevin Kim
1a209aac21 reverted back to I tests working 2023-02-14 13:06:31 -08:00
Kevin Kim
bcea347370 added ALU result select mux for B instructions 2023-02-13 17:38:00 -08:00
Kevin Kim
1364ac2a14 controller handles bclr 2023-02-13 16:57:05 -08:00
Kevin Kim
2679f06a00 Shadd instructions pass tests 2023-02-13 16:36:17 -08:00
Kevin Kim
02a7dc45f0 ALU lint fixes 2023-02-13 14:01:51 -08:00
Kevin Kim
ed6a0466ad ALU configurability changes 
-stuff that was ZBA supported was in ZBB so I changed that
 2023-02-13 14:00:06 -08:00
Kevin Kim
c9e6b9aeef edited controller so that add.uw passes tests 2023-02-13 13:49:46 -08:00
Kevin Kim
cf09bbff5f alu add.uw needs w64 to be false 2023-02-13 13:49:35 -08:00
Kevin Kim
19c8fa75f5 simulation runs-- clmul doesn't pass lint with xor tree 2023-02-11 21:22:33 -08:00
Kevin Kim
67db085b24 lint fixes 2023-02-11 21:13:10 -08:00
Kevin Kim
c7dbb49208 zbb, zbs, cnt lint fixes 2023-02-11 20:41:52 -08:00
Kevin Kim
016634d842 fixed byte unit lints 2023-02-11 20:25:34 -08:00
Kevin Kim
3653ea61b5 fixed lints in cnt 2023-02-11 20:22:42 -08:00
Kevin Kim
52ca8fa691 popcnt passes lint 2023-02-11 19:19:38 -08:00
Kevin Kim
2fefc3019e clmul passes lint 2023-02-11 19:16:13 -08:00
Ross Thompson
6fbca64eb7 Experimental branch prediction optimization. 2023-02-10 15:45:56 -06:00
Kip Macsai-Goren
f95038551f fixed small errors to get regression to run with bit manip supported. 2023-02-10 10:37:06 -08:00
Kip Macsai-Goren
137dd890a0 Merge remote-tracking branch 'upstream/main' into main 2023-02-10 10:01:14 -08:00
Ross Thompson
ca0eb5a591 Modified branch predictor to use InstrValidE and InstrValidD rather than the more complex InstrClassE | WrongClassE logic. 2023-02-10 10:33:10 -06:00
Kevin Kim
f58a2b70a0 Include Funct7 in execute 
- Modifed datapath to support funct7 in execute
- Modified controller to pass on Funct7
- all lints pass
 2023-02-09 19:18:54 +00:00
Kevin Kim
76a8f2d3d3 added W64 zbb input signal in alu 2023-02-09 19:07:22 +00:00
Kevin Kim
17bd001057 modified zbb to account for cnt module change 2023-02-09 16:45:37 +00:00
Kevin Kim
5b5f9a2784 modified cnt for zbb to mux inputs 2023-02-09 16:45:22 +00:00
Kevin Kim
4bf0886129 moved files into bmu folder 2023-02-08 13:57:09 +00:00
Kip Macsai-Goren
41a91cc1e7 fixed merge conflicts with removal of pipelined folder 2023-02-06 18:04:28 -08:00
David Harris
78eb90715c Removed pipelined level of hierarchy 2023-02-02 14:14:11 -08:00