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Commit Graph

879 Commits

Author SHA1 Message Date
Andrew Waterman
e3b12e0b85 Make BTB more complexity-effective
BTB entries reference a small number of unique pages, so we separate the
storage of pages from indices.  This makes much larger BTBs feasible.  It's
easy to exacerbate cycle time this way, so one-hot encoding is used as needed.
2014-03-25 05:22:04 -07:00
Andrew Waterman
804b09c8c5 Frontend QoR tweaks 2014-03-25 05:20:24 -07:00
Andrew Waterman
6465e2df14 Make Int -> Bool conversions explicit 2014-03-24 04:36:53 -07:00
Andrew Waterman
1b030777ce Remove vestigial control signal 2014-03-24 04:36:12 -07:00
Andrew Waterman
5996418021 Fix exception behavior of fmin/fmax 2014-03-18 18:36:51 -07:00
Andrew Waterman
54cbf0c4f1 Add (unused) RV32 CSRs 2014-03-15 17:33:17 -07:00
Andrew Waterman
943d7ac80a Use LinkedHashSet/Map for simpler determinism 2014-03-15 17:31:48 -07:00
Donggyu Kim
53d62cb69d remove nondeterminism 2014-03-15 16:45:58 -07:00
Andrew Waterman
a0389645b7 New FP encoding; improved FP implementation 2014-03-11 18:58:24 -07:00
Andrew Waterman
00bc1a2293 Add fclass.{s|d} instructions 2014-03-10 16:59:24 -07:00
Yunsup Lee
ac4b3f9f22 print out core id 2014-03-04 23:38:49 -08:00
Andrew Waterman
9f2e16c58a Fix D$ arbiter for >2 inputs 2014-03-04 16:32:17 -08:00
Andrew Waterman
fa75f6e81e Fix null pointer exception when HAS_FPU=false 2014-03-04 16:32:09 -08:00
Andrew Waterman
c7110c8389 Make FPU pipeline depths configurable 2014-02-28 13:39:59 -08:00
Yunsup Lee
98b830201a add wen signal to dasm printf 2014-02-25 03:31:06 -08:00
Yunsup Lee
97b1841fcf change dcache tag bits to 7 2014-02-22 22:53:04 -08:00
Andrew Waterman
8e3ca609f7 Renumber uarch CSRs into custom CSR space 2014-02-14 17:40:00 -08:00
Andrew Waterman
a09ff9fdc7 Revert to old AUIPC definition 2014-02-10 19:04:42 -08:00
Andrew Waterman
1456170c6d Always stall decode on RoCC -> FENCE; never stall on RoCC -> deferred AMO.RL fence 2014-02-06 12:01:49 -08:00
Andrew Waterman
eca8c99f44 Ignore rocc interrupt line when no rocc is present 2014-02-06 03:06:55 -08:00
Andrew Waterman
e7a726fbac Make uarch counters read-only 2014-02-06 01:48:56 -08:00
Quan Nguyen
f021213b1d Merge remote-tracking branch 'origin/master' into hwacha-port 2014-02-06 00:21:28 -08:00
Andrew Waterman
62e9313aef Add 16 microarchitectural counters 2014-02-06 00:13:02 -08:00
Yunsup Lee
ff7cae29f7 hookup rocc interrupt and s bit 2014-02-06 00:09:42 -08:00
Yunsup Lee
ab4a3e937b don't share fma pipes 2014-02-05 14:21:43 -08:00
Stephen Twigg
6a02d15c21 Merge branch 'master' into hwacha-port 2014-02-04 17:05:03 -08:00
Henry Cook
2c2b3a7678 cleanups supporting uncore hierarchy 2014-01-31 12:07:26 -08:00
Andrew Waterman
febd26f505 Correct CSR privilege logic 2014-01-31 01:03:17 -08:00
Stephen Twigg
3c3c469725 Add exception signal to rocc interface 2014-01-28 22:13:16 -08:00
Andrew Waterman
0266c1f76a Support retirement width > 1 in CSR file 2014-01-24 16:37:40 -08:00
Andrew Waterman
267394d3cc Fix CSR interlocks 2014-01-24 16:37:40 -08:00
Andrew Waterman
1f986d1c96 Branches don't care about the ALU input/function 2014-01-24 16:37:40 -08:00
Andrew Waterman
a1b7774f5d Simplify handling of CAUSE register 2014-01-24 16:37:39 -08:00
Christopher Celio
a2be21361e Allow ICacheConfig to toggle fetch-width. 2014-01-22 16:19:57 -08:00
Andrew Waterman
a7489920ce Support CSR atomics on all CSRs, not just STATUS 2014-01-21 16:17:39 -08:00
Andrew Waterman
6ba2c1abe5 Use auto-generated CAUSE constants 2014-01-21 15:01:54 -08:00
Andrew Waterman
95de358a96 More of the same FPU fix
some SP ops followed by DP stores were not working because they
were encoded as subnormals, not NaNs.
2014-01-17 14:09:30 -08:00
Andrew Waterman
cf38001e98 Fix fmv.s.x -> fsd 2014-01-17 03:52:35 -08:00
Yunsup Lee
30b894c2c4 Merge remote-tracking branch 'origin/master' into hwacha-port 2014-01-16 16:04:48 -08:00
Yunsup Lee
6bbbf36979 push accel/rocket dmem port back to rocket 2014-01-16 16:01:41 -08:00
Andrew Waterman
57f4d89c90 Generate D$ replay_next signals correctly 2014-01-16 00:16:09 -08:00
Andrew Waterman
6ebdc4d94e Simplify store conditional failure code generation 2014-01-16 00:15:48 -08:00
Andrew Waterman
31060ea8ae Fix fubar long-latency writeback control logic
Load miss writebacks happening at the same time as multiplication
wasn't working.  Hopefully this does it.
2014-01-14 04:02:43 -08:00
Andrew Waterman
e8486817e6 Clean up formatting (i.e. remove tabs, semicolons) 2014-01-13 21:43:56 -08:00
Andrew Waterman
a50a1f7d50 Clean up multiplier/divider stuff 2014-01-13 21:37:16 -08:00
Andrew Waterman
4d236979bd Fix very far forward JALs
We were sign-extending from the wrong bit, causing a backwards jump.
2014-01-13 00:55:48 -08:00
Andrew Waterman
c546f66404 Swap JAL/JALR encodings (again) 2014-01-13 00:54:49 -08:00
Quan Nguyen
ebec444ad2 Increase tag width for configurable precision in Hwacha 2013-12-13 03:33:02 -08:00
Andrew Waterman
07a91bb99a Miscellaneous cleanup 2013-12-09 19:53:14 -08:00
Andrew Waterman
da3135ac9b Begin integer unit clean-up
...to make it easier to generate the superscalar version of the core.
2013-12-09 15:06:13 -08:00