Add DPI-C support for XCelium and Verilator (not possible with MAIN a…

…rgument)

cmake/sim/cadence/xcelium.cmake

@@ -18,7 +18,7 @@
 include_guard(GLOBAL)
 
 function(xcelium IP_LIB)
-    cmake_parse_arguments(ARG "GUI" "" "" ${ARGN})
+    cmake_parse_arguments(ARG "GUI" "" "ARGS" ${ARGN})
     if(ARG_UNPARSED_ARGUMENTS)
         message(FATAL_ERROR "${CMAKE_CURRENT_FUNCTION} passed unrecognized argument " "${ARG_UNPARSED_ARGUMENTS}")
     endif()
@@ -28,12 +28,6 @@ function(xcelium IP_LIB)
     alias_dereference(IP_LIB ${IP_LIB})
     get_target_property(BINARY_DIR ${IP_LIB} BINARY_DIR)
 
-    if(ARG_GUI)
-        set(ARG_GUI -gui)
-    else()
-        unset(ARG_GUI)
-    endif()
-
     get_ip_sources(SOURCES ${IP_LIB} SYSTEMVERILOG VERILOG VHDL)
     get_ip_include_directories(INC_DIRS ${IP_LIB} SYSTEMVERILOG VERILOG VHDL)
 
@@ -46,6 +40,16 @@ function(xcelium IP_LIB)
         list(APPEND CMP_DEFS_ARG -define ${def})
     endforeach()
 
+    get_ip_links(IPS_LIST ${IP_LIB})
+
+    unset(__lib_args)
+    foreach(ip ${IPS_LIST})
+        get_target_property(ip_type ${ip} TYPE)
+        if(ip_type STREQUAL "SHARED_LIBRARY" OR ip_type STREQUAL "STATIC_LIBRARY")
+            list(APPEND __lib_args -sv_lib $<TARGET_FILE_DIR:${ip}>/lib$<TARGET_FILE_BASE_NAME:${ip}>)
+        endif()
+    endforeach()
+
     add_custom_target( run_${IP_LIB}_${CMAKE_CURRENT_FUNCTION}
         COMMAND xrun
         # Enable parameters without default value
@@ -54,13 +58,13 @@ function(xcelium IP_LIB)
         ${SOURCES}
         ${ARG_INCDIRS}
         ${CMP_DEFS_ARG}
-        ${ARG_GUI}
+        ${__lib_args}
+        $<$<BOOL:${ARG_GUI}>:-gui>
+        ${ARG_ARGS}
         COMMENT "Running ${CMAKE_CURRENT_FUNCTION} on ${IP_LIB}"
         DEPENDS ${SOURCES} ${IP_LIB}
         )
 
-    # add_dependencies(${IP_LIB}_${CMAKE_CURRENT_FUNCTION} ${IP_LIB})
-
 endfunction()
 
 

cmake/sim/verilator/verilator.cmake

@@ -194,6 +194,15 @@ function(verilator IP_LIB)
 
     target_link_libraries(${VERILATED_LIB} INTERFACE -pthread)
 
+    # Search for linked libraries that are Shared or Static libraries and link them to the verilated library
+    get_ip_links(IPS_LIST ${IP_LIB})
+    foreach(ip ${IPS_LIST})
+        get_target_property(ip_type ${ip} TYPE)
+        if(ip_type STREQUAL "SHARED_LIBRARY" OR ip_type STREQUAL "STATIC_LIBRARY")
+            target_link_libraries(${VERILATED_LIB} INTERFACE ${ip})
+        endif()
+    endforeach()
+
     string(REPLACE "__" "::" ALIAS_NAME "${VERILATED_LIB}")
     add_library(${ALIAS_NAME} ALIAS ${VERILATED_LIB})
 

examples/dpi-c/CMakeLists.txt

@@ -0,0 +1,33 @@
+cmake_minimum_required(VERSION 3.25)
+project(dpi_example NONE)
+
+include("../../SoCMakeConfig.cmake")
+
+option_enum(SIMULATOR "Which simulator to use" "questa;modelsim;xcelium;verilator" "modelsim")
+
+add_ip(tb
+    DESCRIPTION "Simple verilog testbench"
+    )
+
+ip_sources(${IP} SYSTEMVERILOG
+    ${PROJECT_SOURCE_DIR}/tb.sv
+    )
+
+add_subdirectory(hello)
+
+ip_link(${IP} hello_dpi)
+
+if(SIMULATOR STREQUAL "questa" OR SIMULATOR STREQUAL "modelsim")
+    modelsim(${IP})
+
+elseif(SIMULATOR STREQUAL "xcelium")
+    xcelium(${IP})
+
+elseif(SIMULATOR STREQUAL "verilator")
+    enable_language(CXX)
+    verilator(${IP})
+    add_executable(main Vtb__main.cpp)
+    target_link_libraries(main tb__vlt)
+endif()
+
+help()

examples/dpi-c/Vtb__main.cpp

@@ -0,0 +1,33 @@
+// Verilated -*- C++ -*-
+// DESCRIPTION: main() calling loop, created with Verilator --main
+
+#include "verilated.h"
+#include "Vtb.h"
+
+//======================
+
+int main(int argc, char** argv, char**) {
+    // Setup context, defaults, and parse command line
+    Verilated::debug(0);
+    const std::unique_ptr<VerilatedContext> contextp{new VerilatedContext};
+    contextp->commandArgs(argc, argv);
+
+    // Construct the Verilated model, from Vtop.h generated from Verilating
+    const std::unique_ptr<Vtb> topp{new Vtb{contextp.get()}};
+
+    // Simulate until $finish
+    while (!contextp->gotFinish()) {
+        // Evaluate model
+        topp->eval();
+        // Advance time
+        contextp->timeInc(1);
+    }
+
+    if (!contextp->gotFinish()) {
+        VL_DEBUG_IF(VL_PRINTF("+ Exiting without $finish; no events left\n"););
+    }
+
+    // Final model cleanup
+    topp->final();
+    return 0;
+}

examples/dpi-c/hello/CMakeLists.txt

@@ -0,0 +1,11 @@
+cmake_minimum_required(VERSION 3.25)
+project(hello_dpi CXX)
+
+add_library(hello_dpi SHARED
+    ./hello.cpp
+    )
+
+if(NOT SIMULATOR STREQUAL "verilator")
+    target_compile_options(hello_dpi PRIVATE -m32)
+    target_link_options(hello_dpi PRIVATE -m32)
+endif()