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364 Commits

Author SHA1 Message Date
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
Katherine Parry
3c1bea1104 removed warnings and took a mux out of the critical path 2022-07-12 18:32:17 -07:00
Katherine Parry
18d7fee541 Merge branch 'main' of https://github.com/davidharrishmc/riscv-wally 2022-07-12 22:37:20 +00:00
Katherine Parry
1267d33d3c forgot a file 2022-07-11 18:31:51 -07:00
Katherine Parry
bea4ec078d variable interations implemented in radix-4 divider 2022-07-11 18:30:21 -07:00
Katherine Parry
62205ebb3b renamed FLoad2 to FStore2 2022-07-09 00:26:45 +00:00
Katherine Parry
88b4f9b40a renamed signals in cvt and prostproc 2022-07-08 12:30:43 -07:00
Katherine Parry
b67792086c moved unsused division code again 2022-07-07 16:41:26 -07:00
Katherine Parry
b1e2a1e5a1 Revert "moved old divsqrt to unusedsrc" 
This reverts commit 5dd07c76bd.
 2022-07-07 16:29:17 -07:00
Katherine Parry
5dd07c76bd moved old divsqrt to unusedsrc 2022-07-07 16:09:56 -07:00
Katherine Parry
75a8cea4e4 srt divider merged into fpu 2022-07-07 16:01:33 -07:00
David Harris
ca95b46de5 Added reference to Schmookler01 for LOA 2022-07-05 05:01:12 +00:00
Katherine Parry
2fc795ca70 added missing files 2022-07-03 21:40:47 -07:00
Katherine Parry
8ac722f693 Renaming signals to match chapter 2022-07-03 12:26:22 -07:00
David Harris
0fa35acbc5 Merge branch 'main' of https://github.com/davidharrishmc/riscv-wally 2022-07-02 19:37:14 +00:00
David Harris
89b319aa1b FMA ZAligned name 2022-07-02 19:35:13 +00:00
Katherine Parry
8930cdcfbb some prostprocessing cleanup 2022-07-01 14:55:46 -07:00
Katherine Parry
8f98f3bfab added rv32 double precision stores - untested 2022-06-28 21:33:31 +00:00
Katherine Parry
0417a6a45b very basic early termination passes testfloat 64-bit tests 2022-06-28 00:16:22 +00:00
Katherine Parry
a5fb60eb1a radix-4 early termination working for special cases - not working completely 2022-06-27 20:43:55 +00:00
Katherine Parry
adaee899bb radix-4 divider passing all double precision testfloat tests 2022-06-27 17:04:51 +00:00
Katherine Parry
70a1bb8377 fixed commented out error and removed killprod from result selection 2022-06-25 01:42:23 +00:00
Katherine Parry
fa1623551c passing regression again 2022-06-25 00:31:32 +00:00
Katherine Parry
6d6cc7bb48 commented out error - also some divider bugs fixed 2022-06-25 00:04:53 +00:00
Katherine Parry
43882d5878 modified result select to account for x/inf 2022-06-24 21:23:15 +00:00
Katherine Parry
a85a868b56 radix 4 division denormal result handeling 2022-06-24 21:02:50 +00:00
Katherine Parry
9eefba5b58 added denormal input handeling - radix 4 2022-06-24 19:41:40 +00:00
Katherine Parry
ff1fae74d8 division by zero added 2022-06-24 01:09:44 +00:00
Katherine Parry
ec2c446c7e forgot a file 2022-06-23 23:01:30 +00:00
Katherine Parry
b16e55906a div debug - accounted for 1 bit normalization in exponent calculation 2022-06-23 22:59:43 +00:00
Katherine Parry
749d405da8 lint warning fix 2022-06-23 22:37:44 +00:00
Katherine Parry
de71773d69 added radix-4 0/d handling 2022-06-23 22:36:19 +00:00
Katherine Parry
d7a363aaa7 fixt lint error 2022-06-23 16:11:50 +00:00
Katherine Parry
1612daa294 Testfloat running division - not passing 2022-06-23 00:07:34 +00:00
Katherine Parry
03d823f5d7 added fld in rv32 - needs testing 2022-06-20 22:53:13 +00:00
Katherine Parry
0ffaec850b postprocess out of fpu critical path 2022-06-15 22:58:33 +00:00
Katherine Parry
08b2481917 some synth fpu optimizations 2022-06-14 23:58:39 +00:00
Katherine Parry
8e19331ad5 removed false critical path from fpu 2022-06-14 16:50:46 +00:00
Katherine Parry
674c31ce59 fixed acciedental critical path in FPU 2022-06-14 00:02:38 +00:00
Katherine Parry
5f7072bd96 postprocessing unit created and passing all tests 2022-06-13 22:47:51 +00:00
Katherine Parry
eb93bd46d7 fma synth warnings and errors removed 2022-06-06 16:06:04 +00:00
Katherine Parry
5ae63f913a fixed compilation errors 2022-06-03 15:34:17 +00:00
Katherine Parry
c5bde75e30 added createallvectors 2022-06-02 21:56:05 +00:00
Katherine Parry
ccda4c771e fpu paramaterized - except fdivsqrt 2022-06-02 19:50:28 +00:00
Katherine Parry
74b549ddc8 paramerterized some small fma units 2022-06-01 23:34:29 +00:00
Katherine Parry
707067548f unpacker optimizations 2022-06-01 16:52:21 +00:00
David Harris
efe4b3e8fe Unpackinput cleanup 2022-05-31 22:31:21 +00:00
David Harris
99da6537cc Removed normalized output from unpack and simplified interface 2022-05-31 21:32:31 +00:00
Katherine Parry
cd7fe9af61 reorginized unpackinput signals 2022-05-31 17:40:34 +00:00
Katherine Parry
559c0c278e added unpackinput.sv 2022-05-31 16:18:50 +00:00
David Harris
d1ef3b8981 Removed unused fp add and convert modules 2022-05-29 23:07:56 +00:00
Katherine Parry
835a4e4606 fixed lint error 2022-05-28 10:20:13 -07:00
David Harris
80315fedff fixed merge conflicts 2022-05-28 09:44:55 +00:00
David Harris
4335895b21 Added comments to some files, added a+b = 0 detector to comparator.sv 2022-05-28 09:41:48 +00:00
Katherine Parry
822866fd0a removed unused signal from FMA 2022-05-27 16:47:56 -07:00
Katherine Parry
d5c249bf71 unpacker adds 1 to denorm expoents 2022-05-27 14:37:10 -07:00
Katherine Parry
3c63db9554 some optimizations in unpacker 2022-05-27 11:36:04 -07:00
Katherine Parry
b288f812ab moved lzc to generic and small optimizations on fcvt 2022-05-27 09:04:02 -07:00
Katherine Parry
efb972c6d3 Removed guard bit from fma rounding 2022-05-27 08:23:46 -07:00
Katherine Parry
550c4d380c fcvt.sv paramaterized 2022-05-26 20:48:22 +00:00
Katherine Parry
f4b9ade942 added fcvt.sv 2022-05-26 00:10:51 +00:00
Katherine Parry
c264585fe8 single and double conversions pass all tests 2022-05-25 23:02:02 +00:00
Katherine Parry
6bc31f2e78 Fixed unpacker bug LT EQ LE pass testfloat 2022-05-20 17:19:50 +00:00
Katherine Parry
bc4804d90a fixed lint warning 2022-05-19 20:34:06 +00:00
Katherine Parry
b0881495a9 Bug fixed in unpacker and sub/add/mul tests pass TestFloat 2022-05-19 20:31:23 +00:00
Katherine Parry
cc0ab94ebc Added fp tests - doesnpass yet 2022-05-19 16:32:30 +00:00
David Harris
61199ccd13 More signal cleanup 2022-05-12 15:39:44 +00:00
David Harris
7e764fbda1 More unused signal cleanup 2022-05-12 15:15:30 +00:00
David Harris
e2dea3bb89 Removed more unused signals, simplified csri state 2022-05-12 15:10:10 +00:00
David Harris
8372bc86a7 Removing unused signals 2022-05-12 14:36:15 +00:00
David Harris
554c2b3550 Illegal instruction fault when running FPU instruction with STATUS_FS = 0 2022-05-03 18:32:01 +00:00
David Harris
9c4de0e9c1 FPU generates illegal instruction if MSTATUS.FS = 00 2022-05-03 11:56:31 +00:00
David Harris
83d283354c Added comments in fcvt 2022-04-17 16:53:10 +00:00
Katherine Parry
c307cff503 fixed errors and warnings in rv32e 2022-04-07 17:21:20 +00:00
Katherine Parry
20885f4dea generating all testfloat vectors 2022-04-04 17:17:12 +00:00
David Harris
049c55769a fpu compare simplification, minor cleanup 2022-03-29 17:11:28 +00:00
Katherine Parry
abdbc31d14 fixed typo in unpack.sv 2022-03-23 18:26:59 +00:00
Katherine Parry
ead88fba55 fixed lint error in fpudivsqrtrecur.sv 2022-03-23 03:24:41 +00:00
Katherine Parry
c3c764a171 unpack.sv cleanup 2022-03-23 01:53:37 +00:00
Katherine Parry
2042374102 FMA parameterized and FMA testbench reworked 2022-03-19 19:39:03 +00:00