Ross Thompson
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611ea6882d
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Changed FDivBusyE to stall the whole pipeline. Any instruction in the Executation which depended on the output of an instruction in the writeback stage would be lost if the back end of the pipelined advanced. The solution is to stall the whole pipeline.
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2022-10-22 16:27:20 -05:00 |
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Ross Thompson
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a7ae593a68
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Possible fix for interrupt during a floating point divide.
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2022-10-18 15:04:21 -05:00 |
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Ross Thompson
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9a7c7e8398
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Added comments about planned changes.
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2022-08-29 09:48:00 -05:00 |
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David Harris
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2170203847
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Simplified FPU-LSU interface to skip IEU
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2022-08-22 13:28:51 -07:00 |
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Katherine Parry
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41c16be012
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srt divider merged into fpu
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2022-07-07 16:01:33 -07:00 |
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DTowersM
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6944996329
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added #1 delays to Stalls and Flushes in hazard unit
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2022-06-08 16:28:09 +00:00 |
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David Harris
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1d8bc2dc1b
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Added stalls for pending SFENCE.VMA and FENCE.I in hazard unit
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2022-06-02 09:37:59 -07:00 |
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David Harris
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faa15b1f8d
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Cleaned up comments in controller
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2022-06-02 15:48:33 +00:00 |
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David Harris
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c7ec9282fe
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Provided sfencevmaM to hazard unit and renamed TLBFlush signals to sfencevma going into LSU/IFU. Preparing for SFENCE.VMA to flush the pipeline, but that is not yet working.
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2022-06-02 14:18:55 +00:00 |
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David Harris
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4237bb7abd
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Added comments to some files, added a+b = 0 detector to comparator.sv
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2022-05-28 09:41:48 +00:00 |
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David Harris
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2ceed15bd5
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Moved TLB Flush logic into privdec
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2022-05-12 16:41:52 +00:00 |
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David Harris
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a516f89f22
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WFI terminates when an interrupt is pending even if interrupts are globally disabled
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2022-05-08 04:30:46 +00:00 |
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David Harris
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9b7aab122e
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wally32priv and wally64priv now passing WALLY-status-tw. Fixed privileged.sv to produce the correct EPC on timeouts
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2022-05-05 14:37:21 +00:00 |
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David Harris
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1a7599ce94
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Changed WFI to stall pipeline in memory stage
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2022-05-05 02:03:44 +00:00 |
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David Harris
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04b0579b89
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Extended sim time to fully boot Linux. Added comments to hazard unit
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2022-04-24 13:51:00 +00:00 |
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David Harris
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fd13272d4c
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Renamed LSUStall to LSUStallM
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2022-01-15 00:24:16 +00:00 |
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Ross Thompson
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f870b8b3d3
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Fixed interger divide so it can be interrupted.
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2022-01-13 11:16:50 -06:00 |
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David Harris
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120fb7863f
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Reformatted MIT license to 95 characters
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2022-01-07 12:58:40 +00:00 |
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David Harris
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1d8451c2cf
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Capitalized LSU and IFU, changed MulDiv to MDU
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2022-01-07 04:30:00 +00:00 |
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David Harris
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b36ace221e
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Renamed wally-pipelined to pipelined
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2022-01-04 19:47:41 +00:00 |
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