118 Commits

Author	SHA1	Message	Date
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Kevin Kim	422b428cba	removed outdated b-signals in controller	2023-03-03 08:45:42 -08:00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