added ops for C codegen

test/tests.lisp

@@ -34,7 +34,7 @@
                         (collect (read-line str)))
                        (t (finish)))))))
 
-(defun run-test (path)
+(defun run-test (path &key (target :nasm))
   "File must begin with 2 comments: 
    First must be TEST
    Second must eval to the expected result"
@@ -49,8 +49,11 @@
         (return-from run-test 'not-test))
       (let ((expected-output (eval (read-form-comment str))))
         (generate-program (parse-tokens (lex-stream str))
-                          :path (change-file-type abs-path "asm")
-                          :compile t :silence t)
+                          :path (change-file-type abs-path (case target
+                                                             (:nasm "asm")
+                                                             (:c "c")))
+                          :compile t :silence t
+                          :target target)
         (let ((output (run (list (drop-file-type abs-path))
                            :output :string :silence t)))
           (format t "testing ~a... " (pathname-name path))