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343 Commits

Author SHA1 Message Date
David Harris
2ebdfa3f68 Comments about division hazards 2022-11-13 04:17:37 -08:00
cturek
4a8661649c Added integer step counter to fsm 2022-11-11 00:23:25 +00:00
cturek
b723e16893 Fixed asign and bsign 2022-11-09 18:41:26 +00:00
cturek
d571b5f9a5 propagated otfc swap to Rad2 and 4 qslc 2022-11-06 23:32:38 +00:00
cturek
54f09f3616 Added conditional OTFC swap for simplified int postprocessing 2022-11-06 23:09:09 +00:00
cturek
c3e635c788 Finished Int Preprocessinggit add ../src/fpu/fdivsqrt/fdivsqrtpreproc.sv 2022-11-06 22:40:21 +00:00
cturek
a49ea2a16d Added n and rightshiftx 2022-11-06 22:31:48 +00:00
cturek
350d4d254f p calculation 2022-11-06 22:24:21 +00:00
cturek
83051a5351 Changed lzc names, started int/fp size merge in preproc 2022-11-06 22:21:35 +00:00
cturek
2cbe2fd70b Added n, p, and m signals between fdivsqrt submodules. Added w64 and mdue to divsqrt testbench. 2022-11-06 22:08:18 +00:00
cturek
6bc4c1318e Added new macros for int div preprocessing, added p, n, and rightshiftx logic 2022-11-06 21:53:48 +00:00
cturek
06a9305766 renamed remOp to RemOp 2022-11-03 22:37:25 +00:00
cturek
e37f564e84 Added rem/div operation to postprocessor 2022-11-02 17:49:40 +00:00
cturek
e8d7607e87 Added buffered signals for int/fp 2022-10-28 21:47:24 +00:00
cturek
9f41e57f03 Config Cleanup 2022-10-27 22:38:56 +00:00
cturek
7301fc7f18 small signal cleanup 2022-10-26 18:42:49 +00:00
cturek
6caf7bb7e2 abs for int inputs 2022-10-26 16:18:05 +00:00
cturek
ec4646b412 Added signed division to fdivsqrt 2022-10-26 16:13:41 +00:00
cturek
ff7d6b2932 Started Integer Preprocessing 2022-10-25 17:48:43 +00:00
amaiuolo
56455bb9ad Merge branch 'main' of https://github.com/davidharrishmc/riscv-wally 2022-10-13 22:36:57 +00:00
amaiuolo
1ae48e0edc added amaiuolo@hmc.edu 2022-10-13 22:36:52 +00:00
David Harris
04dc0ac02c New fdivsqrtqsel4cmp module based on comparators rather than table lookup 2022-10-09 04:47:44 -07:00
David Harris
4f312ea2e7 Moved shift into divsqrt stage and cleaned up comments 2022-10-09 04:45:45 -07:00
David Harris
2aa43848f5 fdivsqrt code cleanup 2022-10-09 03:37:27 -07:00
David Harris
657f16dfd1 Adding start signals for integer divider to fdivsqrt 2022-09-29 16:30:25 -07:00
cturek
e8a869e0e7 Added integer inputs and flags to divsqrt 2022-09-29 23:08:27 +00:00
David Harris
d6297a2f2e For radix 4 division, fixed initial C and then could remove unexplained shift from divshiftcalc 2022-09-21 13:30:35 -07:00
David Harris
46680b80a7 Eliminated store after store stall when no cache; simplified divshiftcalc logic. 2022-09-21 13:02:34 -07:00
David Harris
cb4c3ff1ce Simplified shipping in divshiftcalc; enhanced testbench-fp to be able to run all 32-bit tests generated by sqrttest 2022-09-21 10:35:08 -07:00
David Harris
129b9343fe commented SpecialCase 2022-09-21 05:02:08 -07:00
David Harris
5e1932c649 Added SpecialCaseReg to hold SpecialCase for fdivsqrtpostproc 2022-09-21 04:55:43 -07:00
David Harris
f7d272c315 Gated sticky bit in fdiv with SpecialCase 2022-09-20 20:05:00 -07:00
David Harris
3b98881c4e renamed u to udigit to avoid conflict with U 2022-09-20 19:29:23 -07:00
cturek
6e300a667e Fixed R4 Sqrt overshifting 2022-09-21 00:05:36 +00:00
cturek
c3c764f0ba Fixed fgen4 2022-09-20 20:00:01 +00:00
David Harris
00c15ec472 renamed q to u for unified digit selection 2022-09-20 04:35:14 -07:00
David Harris
d01588d693 Removed D2 and D2b from radix2 stage 2022-09-20 04:20:38 -07:00
David Harris
2ea7df1b6d Simplified UM initialization 2022-09-20 04:18:12 -07:00
David Harris
0d5e80a4f0 fdivsqrtfgen4 comments 2022-09-20 04:13:21 -07:00
David Harris
653c458241 Moved fpu modules into subdirectories 2022-09-20 04:12:05 -07:00
David Harris
0ec1886b89 Partitioned fdivsqrt into one module per file and added file names to opening comments 2022-09-20 03:57:57 -07:00
David Harris
a05b6486b1 Simplified fdivsqrtpostproc QmM logic 2022-09-20 03:30:18 -07:00
David Harris
87cde2c427 make QmM size b+1 indpenedent of radix 2022-09-20 03:25:09 -07:00
David Harris
e455f41b97 clean up divshiftcalc 2022-09-20 03:19:50 -07:00
David Harris
211705eca2 clean up divshiftcalc 2022-09-20 03:17:29 -07:00
David Harris
d3b2a192eb clean up divshiftcalc 2022-09-20 03:13:11 -07:00
David Harris
f5083803c2 clean up divshiftcalc 2022-09-20 03:08:25 -07:00
David Harris
2faa0d14be Cleaning up divshiftcalc LOGNORMSHIFTSZ 2022-09-20 02:35:01 -07:00
cturek
019a6eb9f5 Radix 4 sqrt passing first two tests 2022-09-19 21:26:32 +00:00
David Harris
8e90862dad Removed EarlyTermShift from fdiv 2022-09-19 08:44:23 -07:00
David Harris
73ceb4590c Finished unified divsqrt otfc and fgen name changes 2022-09-19 08:30:59 -07:00
David Harris
3cf6becaf4 fdivsqrtiter simplification 2022-09-19 01:08:01 -07:00
David Harris
e840edc4e6 Reduced number of cycles needed for division 2022-09-19 01:02:04 -07:00
David Harris
d6f1453275 Cleaned up otfc4 2022-09-19 00:58:20 -07:00
David Harris
309995a6e9 OTFC simplification 2022-09-19 00:51:56 -07:00
David Harris
59b6346a28 Removed unused otfc for Q 2022-09-19 00:43:27 -07:00
David Harris
e764d4322c fdiv cleanup 2022-09-19 00:32:34 -07:00
David Harris
cf0c20d489 Division working again for radix 2 with unified OTFC 2022-09-19 00:30:30 -07:00
David Harris
b636072914 Unified on-the-fly conversion working for radix 2; broke radix-4 division 2022-09-19 00:04:00 -07:00
David Harris
4dbe1035cb Added 2 bits to C to initialize properly 2022-09-18 22:44:22 -07:00
David Harris
f202eb0f6f Added 2 bits to C to initialize properly 2022-09-18 22:42:35 -07:00
David Harris
b74a68ff0f Reduced number of cycles required for lower-precision sqrt 2022-09-17 09:55:34 -07:00
David Harris
ac78823f6c Starting to adust number of cycles for division/sqrt 2022-09-17 05:58:59 -07:00
cturek
79addec27a Fixed j1 to align with new C reg 2022-09-16 02:15:48 +00:00
David Harris
29d9ded25c FDIVSQRT cleanup 2022-09-15 09:10:57 -07:00
cturek
da67e02392 Added shift for radix 4 sqrt 2022-09-14 17:34:24 +00:00
cturek
47d02db2eb Moved X-1 to preproc 2022-09-14 17:26:56 +00:00
cturek
4f3baea0fc removed unnecessary XZero from wsmux 2022-09-14 16:59:52 +00:00
David Harris
1495305045 Removed unused signals 2022-09-12 11:35:35 -07:00
David Harris
7639c05e51 Moved C to shift before rather than after using in an iteration 2022-09-08 16:05:53 -07:00
David Harris
7ba9b0b349 divsqrt comment cleanup 2022-09-08 15:40:42 -07:00
David Harris
5ea82cff33 CSA-based completion detection 2022-09-08 14:58:08 -07:00
David Harris
2d5e7827df Factored out aplusbeq0 unit 2022-09-07 11:36:35 -07:00
David Harris
838d98cf4b Preprocessing cleanup 2022-09-07 10:21:27 -07:00
David Harris
c8e0ea067e Continued simplifying fdivsqrt postprocessing 2022-09-07 07:02:22 -07:00
David Harris
b0ff3a0952 Continued simplifying fdivsqrt postprocessing 2022-09-07 07:00:13 -07:00
David Harris
9e7926e8d7 Moving postprocessing into postproc block 2022-09-07 06:42:37 -07:00
David Harris
c39e71f168 fdivsqrtfsm cleanup 2022-09-07 06:32:07 -07:00
David Harris
027b303b20 fdivsqrtfsm cleanup 2022-09-07 06:27:01 -07:00
David Harris
19e449b83d Fixed regression for divsqrt radix2 2022-09-07 06:12:23 -07:00
David Harris
41448663b9 Initial radix 4 square root debuggin 2022-09-01 16:57:57 -07:00
David Harris
5e26bcced1 Fixed lint errors in square root and improved waveforms in testfloat 2022-09-01 15:49:13 -07:00
David Harris
199296dd03 fdiv debug 2022-08-31 14:26:31 -07:00
David Harris
09456db445 Checking in radix 4 square root with qsel, fgen, softc, but not working 2022-08-31 10:54:50 -07:00
David Harris
e1760dde55 Fixed checking termination in testfloat testbench 2022-08-30 10:55:21 -07:00
David Harris
28db4fdc70 commented out lines to have divider work again 2022-08-29 13:01:32 -07:00
David Harris
a6efbb3fda Initial FDIVSQRT simplification working 2022-08-29 12:01:09 -07:00
David Harris
a82cf3d0ba Simplify FSM 2022-08-29 04:32:27 -07:00
David Harris
7856f08e1d Renamed special case 2022-08-29 04:29:58 -07:00
David Harris
7d4e85bf21 Separated out radix 2 and radix 4 stages into different modules 2022-08-29 04:26:14 -07:00
David Harris
2788022c22 renamed srt to fdivsqrt 2022-08-29 04:04:05 -07:00
David Harris
d72068d582 Only stall FPU to IEU on convert instructions with dependencies 2022-08-23 12:57:18 -07:00
David Harris
05aa18fe14 Cleaned up fcvt selection control to IEU and FPUIllegalInst signals 2022-08-23 12:17:19 -07:00
David Harris
f72d07adce Improved illegal instruction checking in FPU 2022-08-23 11:08:02 -07:00
David Harris
2a1bd53663 Merge branch 'main' of github.com:davidharrishmc/riscv-wally into main 2022-08-23 10:14:59 -07:00
David Harris
029aecabf7 typo in srtfsm 2022-08-23 10:14:54 -07:00
Katherine Parry
fe0c6afe58 Merge branch 'main' of https://github.com/davidharrishmc/riscv-wally 2022-08-23 16:36:32 +00:00
Katherine Parry
4e33ead413 renamed rounding bits to L,G,R,S and fixed lint warning 2022-08-23 16:36:20 +00:00
Ross Thompson
5efec3b1f3 Replaced FPU data replicaiton on WriteData bus with 0 extention. 2022-08-23 10:46:03 -05:00
David Harris
0e489443f2 Finished FPU-LSU interface cleanup 2022-08-22 13:43:04 -07:00
David Harris
774cddf33c Merge branch 'main' of github.com:davidharrishmc/riscv-wally into main 2022-08-22 13:28:54 -07:00
David Harris
d556adde16 Simplified FPU-LSU interface to skip IEU 2022-08-22 13:28:51 -07:00
Katherine Parry
a9be193a35 Merge branch 'main' of https://github.com/davidharrishmc/riscv-wally 2022-08-22 17:16:25 +00:00
Katherine Parry
36be692c0b sqrt passes - lint warnings remain 2022-08-22 17:16:12 +00:00
David Harris
bdfc49f847 moved CSA to generic 2022-08-22 08:41:23 +00:00
Katherine Parry
a191603a1a fixed -1 issue in division 2022-08-20 00:53:45 +00:00
Katherine Parry
9549c23f45 sqrt tests in regression uncommented and pass 2022-08-07 23:38:10 +00:00
Katherine Parry
cb0c1b7488 radix-2 1 copy passes testfloat 2022-08-06 22:54:05 +00:00
Katherine Parry
de6ae471bc fixed fsw problem and removed 2 bit shift from shift correction 2022-08-03 22:16:51 +00:00
David Harris
e70b28f7f6 FMA cleanup 2022-08-02 07:42:32 -07:00
David Harris
887e4c73fb Moved InvA to sign block; simplified fmaexpadd coding 2022-08-02 07:34:09 -07:00
David Harris
06c4f18cd1 merged lza back into main 2022-08-01 19:45:21 -07:00
David Harris
8147f75399 Fixed fmaadd to work with new LZA 2022-08-01 19:40:55 -07:00
David Harris
7e4b04ff64 Parameterized fmalza 2022-08-01 16:18:02 -07:00
David Harris
94fa7a00e7 Completed LZA simplificaiton 2022-08-01 16:13:16 -07:00
David Harris
3b937b73fd lza cleanup 2022-08-01 16:01:02 -07:00
David Harris
b614f165fb Merge branch 'main' of github.com:davidharrishmc/riscv-wally into main 2022-08-01 15:47:58 -07:00
David Harris
91597bba87 lza cleanup 2022-08-01 15:47:03 -07:00
David Harris
f56b26ec40 lza cleanup 2022-08-01 15:43:48 -07:00
David Harris
c3e9719c99 lza cleanup 2022-08-01 15:40:12 -07:00
David Harris
d6b5e7a6ef lza cleanup 2022-08-01 15:37:09 -07:00
Katherine Parry
8ff3a693af regression passes fpu tests 2022-08-01 19:56:25 +00:00
David Harris
2869d67e50 more lza cleanup 2022-08-01 12:34:00 -07:00
David Harris
b34d2065c3 LZA cleanup 2022-08-01 12:30:42 -07:00
David Harris
99462049e7 LZA refactoring switched to Pp1, Gm1, Km1 2022-08-01 12:20:23 -07:00
David Harris
3c08aabcd3 LZA refactoring 2022-08-01 11:36:21 -07:00
David Harris
7f9b601467 fmalza edits to match textbook 2022-08-01 18:23:39 +00:00
David Harris
257107f908 Partitioned fma into separate files 2022-08-01 18:07:38 +00:00
Katherine Parry
655e2d3810 merged radix-2 sqrt into divider - doesnt work yet 2022-07-23 00:41:18 +00:00
Katherine Parry
b3d932cd61 divider sizes reworked to match book 2022-07-22 22:02:04 +00:00
Katherine Parry
fbe8bb2298 radix-4 division integrated into srt - not tested 2022-07-21 19:38:06 +00:00
Katherine Parry
7950a675ea added input enables and improved forwarding 2022-07-21 01:20:06 +00:00
Katherine Parry
a30d9c6bd8 turn off 2 word store durring non-fp instructions 2022-07-20 21:57:23 +00:00
Katherine Parry
b26297e874 moved ctrl signal registers into fctrl, also a lot of code cleaning 2022-07-20 02:27:39 +00:00
cturek
0f94177765 small changes 2022-07-20 01:36:25 +00:00
Katherine Parry
d61f84e751 oprimized zeros and replaced complex ?: with always_comb 2022-07-19 23:44:37 +00:00
Katherine Parry
514674417e moved Se into execute stage 2022-07-19 01:10:10 +00:00
Katherine Parry
64b3e4117b reworked fmashiftcalc to match book 2022-07-19 00:04:24 +00:00
David Harris
9fd772ce83 Merge branch 'main' of https://github.com/davidharrishmc/riscv-wally 2022-07-18 23:11:12 +00:00
Katherine Parry
cce5fb8dfd moved Ss to execute stage 2022-07-18 20:48:56 +00:00
Katherine Parry
7268b4b334 removed underflow from inexactct calculation 2022-07-18 17:51:18 +00:00
Katherine Parry
0210718f19 renamed signals in ocde to match book 2022-07-18 17:31:17 +00:00
David Harris
03f573351a Rewrote convert shift calculation with always for ease of reading 2022-07-17 16:40:58 +00:00
Katherine Parry
e3ed40620c forgot some files 2022-07-15 21:42:45 +00:00
Katherine Parry
5cb9c9f319 merged floating-point radix-2 divider with radix-4 2022-07-15 20:16:59 +00:00
Katherine Parry
2fe8b6e34c fixed error in divsqrt 2022-07-14 18:16:00 +00:00
Katherine Parry
66bef379cb renamed a file to fit diagram 2022-07-13 23:44:54 +00:00
Katherine Parry
3dcddf8453 some code cleanup 2022-07-13 15:28:22 -07:00
Katherine Parry
b874c5c05d removed minus 1 case in rounding 2022-07-13 15:01:38 -07:00
Katherine Parry
b45b3baec2 removed the +1 in the cvt 2022-07-13 09:41:35 -07:00