77 Commits

Author	SHA1	Message	Date
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