[Init] initialize repo

.gitignore

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+build/

CMakeLists.txt

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+cmake_minimum_required(VERSION 3.12)
+cmake_policy(SET CMP0074 NEW)
+project(lacpu)
+
+# set environment variables for verilator
+# remove if already install one
+set(verilator_DIR "/home/blur/gits/verilator")
+set(ENV{VERILATOR_ROOT} ${verilator_DIR})
+
+find_package(verilator)
+
+if (NOT verilator_FOUND)
+  message(FATAL_ERROR "Verilator was not found.")
+endif()
+
+# set default top module as top file
+set(VSRC ${CMAKE_SOURCE_DIR}/vsrc/top.v)
+
+# get all cxx source files from cxxsrc
+file(GLOB_RECURSE CXXSRC ${CMAKE_SOURCE_DIR}/cxxsrc/*.cc)
+
+add_executable(${CMAKE_PROJECT_NAME} ${CXXSRC})
+
+verilate(${CMAKE_PROJECT_NAME}
+  INCLUDE_DIRS ${CMAKE_SOURCE_DIR}/vsrc ${verilator_DIR}/include
+  SOURCES ${VSRC})

README.md

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 # neulacpu
+
 loongarch cpu development repo

cxxsrc/main.cc

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+int main() {
+    return 0;
+}

vsrc/top.v

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+module top (
+    input wire i_x,
+    output wire o_y
+);
+    assign o_y = i_x;
+endmodule