feat(XSLog): move all XSLog outside WhenContext for collection

As data in WhenContext is not acessible in another module. To support
XSLog collection, we move all XSLog and related signal outside
Wh

feat(XSLog): move all XSLog outside WhenContext for collection

As data in WhenContext is not acessible in another module. To support
XSLog collection, we move all XSLog and related signal outside
WhenContext. For example, when(cond1){XSDebug(cond2, pable)} to
XSDebug(cond1 && cond2, pable)

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perf: use perfUtils in `Utility` (#3190)

Currently, log and perf utilities such as `XSPerfAccumulate` are
implemented in many repositories like XiangShan, CoupledL2 and HuanCun.
This PR unifies th

perf: use perfUtils in `Utility` (#3190)

Currently, log and perf utilities such as `XSPerfAccumulate` are
implemented in many repositories like XiangShan, CoupledL2 and HuanCun.
This PR unifies them and put them in Utility repository.

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Bump rocket-chip (#2353)

misc: update PCL information (#899)

XiangShan is jointly released by ICT and PCL.

Add MulanPSL-2.0 License (#824)

In this commit, we add License for XiangShan project.

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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LogUtils: remove trait 'HasXSLog' (#732)

TLTimer: set default freq for FPGAPlatform to 1000000 (#716)

Previously in commit 298aa395a6ec116ee255d90b2c1188c32a53ef35,
we incorrectly set simulation freq to 1,000,000.

TLTimer: change default freq to 1000000 (#708)

clint: support dual-core clint

src: remove unused import BoringUtils

roq: remove isWFI

Backend: decode WFI

TLTimer: set inc to 1

TLTimer: impl msip, fix mtip's connection bug

XSSim: Insert a buffer at mmio pass to avoid dead lock

Add debug info

add debug info into TLTimer

Impl TLTimer