95 Commits

Author	SHA1	Message	Date
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