Andrew Waterman
65ff397122
improved instruction decoding
...
it now makes use of don't-cares by performing logic minimization
2012-05-01 20:16:36 -07:00
Huy Vo
c9c3bd02bc
kill mem stage if fpu nacks in mem stage
2012-04-01 17:02:32 -07:00
Andrew Waterman
7f254d9670
refine FP bugfixes
2012-04-01 14:52:33 -07:00
Huy Vo
c7c35322c2
two bug fixes to fpu
2012-03-31 22:23:51 -07:00
Andrew Waterman
452876af37
fence on vvcfg; implement fence.v.g correctly
2012-03-27 14:49:00 -07:00
Andrew Waterman
54fa6f660d
new supervisor mode
2012-03-24 13:03:31 -07:00
Yunsup Lee
aaed0241af
get rid of vxcptwait
2012-03-21 15:09:04 -07:00
Yunsup Lee
023734175d
now fence stalls in decode
2012-03-20 17:10:05 -07:00
Yunsup Lee
e450e3aa40
fix irt counter bug regarding vector stuff
2012-03-20 17:09:54 -07:00
Yunsup Lee
c036fff79c
fix id interrupt signal
2012-03-19 15:13:57 -07:00
Yunsup Lee
264732556f
fixes to match verilog X semantics
2012-03-19 03:10:00 -07:00
Andrew Waterman
bd27d0fab2
can now take interrupts on stalled instructions
2012-03-19 01:02:06 -07:00
Andrew Waterman
c4a91303fb
update vector fence names and encoding
2012-03-18 20:42:38 -07:00
Yunsup Lee
b793d63182
no vector interrupt masking
2012-03-17 23:01:06 -07:00
Yunsup Lee
b19d783fbd
add vector irq handler
2012-03-14 14:15:28 -07:00
Yunsup Lee
040d62f372
refactored vector exception handling interface
2012-03-13 23:45:34 -07:00
Yunsup Lee
5655dbd5da
add vvcfg and vtcfg instructions
2012-03-13 23:45:34 -07:00
Yunsup Lee
1ba5e7b865
changes to the vector exception interface
2012-03-11 21:38:47 -07:00
Yunsup Lee
e42a4c767e
don't stall on vector fences, keep replaying
2012-03-11 16:29:19 -07:00
Yunsup Lee
44ff22a26f
vector exception handler now handles prefetches correctly
2012-03-10 12:54:36 -08:00
Andrew Waterman
85504f0ddc
fix bug in fence.i and improve test
2012-03-09 03:26:05 -08:00
Yunsup Lee
8acbe98f53
change how fence.*.cv works, now control processor stalls on the fence instruction
2012-03-08 23:32:31 -08:00
Yunsup Lee
e28a551368
refactor code related to vector exceptions
...
- revisied interfaces
- new instructions
2012-03-03 15:15:00 -08:00
Yunsup Lee
8678b3d70c
clean up ioDecoupled/ioPipe interface
2012-03-01 20:48:46 -08:00
Yunsup Lee
c7b01230f4
fix mul/div when waddr=0, can't believe torture didn't find this one
2012-03-01 10:15:27 -08:00
Andrew Waterman
e12b9eae93
remove ext_mem interface
...
hindsight is 20/20
2012-02-26 18:53:39 -08:00
Yunsup Lee
94ba32bbd3
change package name and sbt project name to rocket
2012-02-25 17:09:26 -08:00
Yunsup Lee
a1600d95db
fix bug related to waddr and wdata in wb stage
...
for the instructions which don't use waddr/wdata for writeback, the contents were getting overwritten by the ll ops
it manifested itself after cp imul were sharing the alu with the vu
2012-02-25 12:21:10 -08:00
Yunsup Lee
137fd62007
refactor cpfences
2012-02-25 12:20:36 -08:00
Andrew Waterman
4121fb178c
clean up mul/div interface; use VU mul if HAVE_VEC
2012-02-24 19:22:35 -08:00
Andrew Waterman
b3a3289d34
fix (?) external memory request nack interface
2012-02-24 01:42:33 -08:00
Yunsup Lee
63939efd0c
fix ctrl vec iface hookup - final
2012-02-23 23:03:44 -08:00
Yunsup Lee
bf1e643913
fix ctrl vec iface hookup
2012-02-23 22:55:25 -08:00
Andrew Waterman
6ceaa0e80a
correct and simplify replay_next logic
2012-02-23 16:52:52 -08:00
Andrew Waterman
f939088be1
move datapath control signals into control unit
...
because that's where control signals go
2012-02-23 16:52:52 -08:00
Andrew Waterman
7c929afe2b
HTIF now controls CPU reset
2012-02-22 19:30:03 -08:00
Andrew Waterman
7034c9be65
new htif protocol and implementation
...
You must update your fesvr and isasim!
2012-02-19 23:15:45 -08:00
Andrew Waterman
8b3b3abd3d
fix external memory request nack logic
2012-02-15 18:57:40 -08:00
Andrew Waterman
fe2c1d1321
add vec->ctrl fences
2012-02-15 18:31:19 -08:00
Yunsup Lee
82cd3625c2
add in vackq interface
2012-02-15 17:53:24 -08:00
Andrew Waterman
c13524ad3a
fix vcmdq full replay logic
2012-02-15 17:49:12 -08:00
Yunsup Lee
258d050e1b
add stall logic for vector command queues
2012-02-15 14:48:41 -08:00
Yunsup Lee
32bdf5098a
refactor vector control logic & datapath in the rocket core
2012-02-15 13:30:22 -08:00
Yunsup Lee
7c11c1406c
vector-vector add working!
2012-02-15 02:28:07 -08:00
Andrew Waterman
0ec7767c13
declaring success on FPU for now
2012-02-14 19:11:57 -08:00
Andrew Waterman
297223a13c
squash subsequent external mem request after nack
2012-02-14 15:12:16 -08:00
Andrew Waterman
15dc2d8c40
add fp writeback arbitration logic
2012-02-14 00:32:25 -08:00
Andrew Waterman
0366465cb1
parameterize the scoreboards
2012-02-13 18:12:23 -08:00
Andrew Waterman
c78c738f60
minor cleanups
2012-02-13 03:13:49 -08:00
Andrew Waterman
a4a9d2312c
add fcvt.[w|l][u].[s|d], f[eq|lt|le].[s|d]
2012-02-13 01:30:01 -08:00
