build: purge chisel 3 and add deprecation check (#3250)

chore: bump chisel 6.0.0 (#2654)

BREAKING CHANGE: `SimTop.v` / `XSTop.v` now generated in `build/rtl`

Bump rocket-chip (#2353)

chore: remove deprecated brackets, APIs, etc. (#2321)

Separate Utility submodule from XiangShan (#1861)

* misc: add utility submodule

* misc: adjust to new utility framework

* bump utility: revert resetgen

* bump huancun

core: use redirect ports for flush (#1121)

This commit removes flush IO for every module. Flush now re-uses
redirect ports to flush the instructions.

Srt16div Bug Fix (#1089)

* Fix a div 1 bug
* Fix a typo

misc: code clean up (#1073)

* rename Roq to Rob

* remove trailing whitespaces

* remove unused parameters

Integer SRT16 Divider (#1019)

* New SRT4 divider that may improve timing

See "Digital reurrence dividers with reduced logical depth"

* SRT16 Int Divider that is working properly

* Fix bug r

Integer SRT16 Divider (#1019)

* New SRT4 divider that may improve timing

See "Digital reurrence dividers with reduced logical depth"

* SRT16 Int Divider that is working properly

* Fix bug related to div 1

* Timing improved version of SRT16 int divider

* Add copyright and made some minor changes

* Fix bugs related to div 0

* Fix another div 0 bug

* Fix another special case bug

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misc: update PCL information (#899)

XiangShan is jointly released by ICT and PCL.

Optimize timing of SRT4Divider (#875)

Add MulanPSL-2.0 License (#824)

In this commit, we add License for XiangShan project.

bundle: use Vec for src in ExuInput (#805)

This commit replaces src1, src2, src3 in Bundle ExuInput with Vec(3, UInt).
Should be easier for RS.

Refactor parameters, SimTop and difftest (#753)

* difftest: use DPI-C to refactor difftest

In this commit, difftest is refactored with DPI-C calls.
There're a few reasons:
(1) From Verilator's

Refactor parameters, SimTop and difftest (#753)

* difftest: use DPI-C to refactor difftest

In this commit, difftest is refactored with DPI-C calls.
There're a few reasons:
(1) From Verilator's manual, DPI-C calls should be more efficient than accessing from dut_ptr.
(2) DPI-C is cross-platform (Verilator, VCS, ...)
(3) difftest APIs are splited from emu.cpp to possibly support more backend platforms
(NEMU, Spike, ...)

The performance at this commit is quite slower than the original emu.
Performance issues will be fixed later.

* [WIP] SimTop: try to use 'XSTop' as soc

* CircularQueuePtr: ues F-bounded polymorphis instead implict helper

* Refactor parameters & Clean up code

* difftest: support basic difftest

* Support diffetst in new sim top

* Difftest; convert recode fmt to ieee754 when comparing fp regs

* Difftest: pass sign-ext pc to dpic functions && fix exception pc

* Debug: add int/exc inst wb to debug queue

* Difftest: pass sign-ext pc to dpic functions && fix exception pc

* Difftest: fix naive commit num limit

Co-authored-by: Yinan Xu <[email protected]>
Co-authored-by: William Wang <[email protected]>

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Divider: opt state encoding (#672)

SRT4Divider: wrap data part in a data module

SRT4Divider: opt timing

fu: fix needFlush arguments

Merge remote-tracking branch 'origin/master' into opt-exception

redirect: split conditional redirect and unconditional redirect

div: don't accept new request when it's cancelled

exu,div: set io.in.valid though the instruction is flushed

[WIP] use berkeley-hardfloat in float units

Divider: invalidate output when flush]

Divider: add a SRT-4 divider