104 Commits

Author	SHA1	Message	Date
Kevin Kim	b5a5f364e1	began subarith configurability optimization in controller	2023-03-03 08:27:11 -08:00
Kevin Kim	f4b8968e12	bug fix, more elegant logic changes in controller	2023-03-02 16:00:56 -08:00
Kevin Kim	2a0c59d5a7	formatting	2023-03-02 15:28:43 -08:00
Kevin Kim	d0c486df54	removed main instruction decoder dependence on bmu controller	2023-03-02 15:28:33 -08:00
Kevin Kim	11a977ffe3	added bitmanip illegal instruction signal	2023-03-02 15:09:55 -08:00
Kevin Kim	b52208b539	zbc comments	2023-03-02 13:52:00 -08:00
Kevin Kim	2d7d143f6d	formatted bmu decoder	2023-03-02 13:45:15 -08:00
Kevin Kim	1b222f91be	moved ALUControlD into configurable block	2023-03-02 12:17:03 -08:00
Kevin Kim	1e1ecaafb1	moved SubArith and RegWriteE into configurable block	2023-03-02 12:15:57 -08:00
Kevin Kim	7dd4a2e975	added BRegWriteE signal	2023-03-02 12:15:22 -08:00
Kevin Kim	d40f3b2a1c	rename shifternew to shifter	2023-03-02 11:45:32 -08:00
Kevin Kim	905373d53b	zbc input select mux optimize	2023-03-02 11:43:05 -08:00
Kevin Kim	2bfbf051a5	zbc select mux optimization	2023-03-02 11:40:29 -08:00
Kevin Kim	44d40afca8	fixed controller lint, changed byte unit mux select name and input width	2023-03-02 11:36:12 -08:00
Kevin Kim	96995c5593	removed redundant zbs	2023-03-02 11:22:09 -08:00
Kip Macsai-Goren	9e52ede0cd	Merge remote-tracking branch 'upstream/main' into bit-manip	2023-02-28 14:41:51 -08:00
Kevin Kim	036cad71c6	bitmanip decoder spits out regwrite, w64, and aluop signals [NEEDS DEBUG]	2023-02-28 12:09:35 -08:00
Kevin Kim	6835a635cc	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	82059fba67	changed shifter source select signal name	2023-02-28 11:41:40 -08:00
Kevin Kim	30ef1ac9e3	rename result back to ALUResult in ALU	2023-02-28 07:27:34 -08:00
David Harris	5c8fee127b	Added support for ZMMUL	2023-02-27 07:29:53 -08:00
Kevin Kim	c7050ada78	removed old shifter	2023-02-24 17:33:47 -08:00
Kevin Kim	b3180d7307	removed now-redundant zero-extend mux in alu	2023-02-24 17:14:12 -08:00
Kevin Kim	0fe1d3b9f3	took sign extension out of shifter	2023-02-24 17:09:56 -08:00
Kevin Kim	a856c5de96	optimized mux to shifter, passes rv32/64i	2023-02-24 12:09:34 -08:00
Kevin Kim	f0cf7c2c6a	small optimization to condzext select	2023-02-23 21:57:28 -08:00
Kip Macsai-Goren	f8f89e692e	Fixed lint errors on zero and pop count. All of regression passes	2023-02-22 20:25:51 -08:00
Kip Macsai-Goren	82611ba889	Manual attempt to merge with upstream changes	2023-02-22 19:42:30 -08:00
Kip Macsai-Goren	66833f15f2	Merge remote-tracking branch 'upstream/main' into main	2023-02-21 14:48:41 -08:00
Kevin Kim	bb252acfbe	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	0b9fd8a4b3	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	2069d92f9e	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	888f4318bc	controlleres and zbb handle byte instructions	2023-02-18 21:06:55 -08:00
Kevin Kim	27581f8d28	alu and controllers handle andn, orn, xnor	2023-02-18 20:57:07 -08:00
Kevin Kim	ba968ed95e	added logic to handle sign/zero extend instructions	2023-02-18 20:32:40 -08:00
Kevin Kim	5c563bef43	fixed ctlzw bug in count unit	2023-02-18 20:12:30 -08:00
Kevin Kim	6d60268240	zbb handles count instructions	2023-02-18 20:12:17 -08:00
Kevin Kim	9760f0ccfd	fixed bmuctrl decode bug	2023-02-18 20:11:50 -08:00
Kevin Kim	84ddb6fb54	updated comments in bmuctrl	2023-02-18 19:57:10 -08:00
Kevin Kim	bec2905ee5	rotate instructions now handled in ZBB unit	2023-02-18 19:56:54 -08:00
Kevin Kim	e47cc222a6	removed redundant decode logic in bmuctrl	2023-02-18 19:50:36 -08:00
Kevin Kim	9203b0cc2f	began ZBB integration into ieu	2023-02-18 19:44:14 -08:00
Kevin Kim	7780cbd47a	bmuctrl handles roriw	2023-02-18 16:26:16 -08:00
Kevin Kim	92c0d3a4ed	configured shifter in alu	2023-02-17 21:58:49 -08:00
Kevin Kim	182b27dfc8	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	c353378da8	controller supports some rotates	2023-02-17 21:57:34 -08:00
Kevin Kim	4a52b57002	bmuctrl supports some rotates	2023-02-17 21:57:19 -08:00
Kevin Kim	50ec6baa07	added zero extend, pre-shift mux to ALU	2023-02-17 20:15:12 -08:00
Kevin Kim	e2d90a9422	more elegant ZBA logic in controller	2023-02-17 20:14:47 -08:00
Kevin Kim	cd92d6e5d1	bmuctrl handles .uw instructions	2023-02-17 20:14:13 -08:00