add missing params to generic_rv64, add MultiDecl to gen_adoc

Author: Derek Hower

cfgs/generic_rv64/params.yaml

@@ -514,3 +514,6 @@ params:
   MSTATUS_FS_WRITEABLE: true
   MSTATUS_TVM_IMPLEMENTED: true
   HW_MSTATUS_FS_DIRTY_UPDATE: precise
+  MSTATUS_VS_WRITEABLE: true
+  MSTATUS_VS_LEGAL_VALUES: [0,1,2,3]
+  HW_MSTATUS_VS_DIRTY_UPDATE: precise

lib/idl/passes/gen_adoc.rb

@@ -159,6 +159,12 @@ def gen_adoc(indent = 0, indent_spaces: 2)
     end
   end
 
+  class MultiVariableDeclarationAst
+    def gen_adoc(indent = 0, indent_spaces: 2)
+      "#{' ' * indent}#{type_name.gen_adoc(0, indent_spaces:)} #{var_name_names.map { |var| var.gen_adoc(0, indent_spaces:) }.join(', ')}"
+    end
+  end
+
   class TernaryOperatorExpressionAst
     def gen_adoc(indent = 0, indent_spaces: 2)
       "#{' ' * indent}#{condition.gen_adoc(0, indent_spaces:)} ? #{true_expression.gen_adoc(0, indent_spaces:)} : #{false_expression.gen_adoc(0, indent_spaces:)}"