CPP hart function prototypes

Signed-off-by: Luke Quinn <[email protected]>

Author: lquinn2015

backends/cpp_hart_gen/tasks.rake

@@ -245,6 +245,7 @@ namespace :gen do
       Rake::Task["#{CPP_HART_GEN_DST}/#{build_name}/include/udb/cfgs/#{config}/csr_container.hxx"].invoke
       Rake::Task["#{CPP_HART_GEN_DST}/#{build_name}/include/udb/cfgs/#{config}/structs.hxx"].invoke
       Rake::Task["#{CPP_HART_GEN_DST}/#{build_name}/include/udb/cfgs/#{config}/func_prototypes.hxx"].invoke
+      Rake::Task["#{CPP_HART_GEN_DST}/#{build_name}/src/cfgs/#{config}/func_prototypes.cxx"].invoke
       Rake::Task["#{CPP_HART_GEN_DST}/#{build_name}/include/udb/cfgs/#{config}/builtin_funcs.hxx"].invoke
 
       Dir.glob("#{CPP_HART_GEN_SRC}/cpp/include/udb/*.hpp") do |f|

backends/cpp_hart_gen/templates/func_prototypes.cxx.erb

@@ -0,0 +1,31 @@
+
+// THIS FILE IS AUTOGENERATED
+// IT IS NOT STANDALONE. IT IS A FUNCTION LIST FOR THE Hart CLASS
+
+
+#define __UDB_CONSTEXPR_FUNC_CALL
+#define __UDB_CONST_GLOBAL(global_name) <%= name_of(:hart, cfg_arch) %>::global_name
+#define __UDB_MUTABLE_GLOBAL(global_name) global_name
+#define __UDB_STRUCT(struct_name) <%= cfg_arch.name.camelize %>_ ## struct_name ## _Struct
+
+<%# need to get symtab at function scope -%>
+<%- symtab = cfg_arch.symtab.global_clone.push(nil) -%>
+<%- cfg_arch.functions.each do |func| -%>
+<%- next if func.builtin? || func.generated? -%>
+//
+// <%= func.description.gsub("\n", "\n// ") %>
+<%= func.gen_cpp_prototype(symtab, 0, include_semi: false) %> {
+  <%- unless func.gen_return_type(symtab) == "void" -%>
+    static_assert(std::is_default_constructible_v<<%= func.gen_return_type(symtab) %>>, "Return type is not default constructible");
+    <%= func.gen_return_type(symtab) %> ret;
+    return ret;
+  <%- end -%>
+}
+<%- end -%>
+
+#undef __UDB_CONSTEXPR_FUNC_CALL
+#undef __UDB_CONST_GLOBAL
+#undef __UDB_MUTABLE_GLOBAL
+#undef __UDB_STRUCT
+
+<%- symtab.release -%>