new generated file + genscript + skeleton of interpreter

src/libcoreint/interpreter.c

@@ -0,0 +1,87 @@
+/* Copyright 2014 Samsung Electronics Co., Ltd.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "error.h"
+#include "lexer.h"
+#include "parser.h"
+#include "pretty-printer.h"
+#include "interpreter.h"
+#include "opcode.h"
+
+
+void
+safe_opcode (FILE *file, opcode_ptr ptr, int arg1, int arg2)
+{
+  curr_opcode.func = ptr;
+  curr_opcode.arg1 = arg1;
+  curr_opcode.arg2 = arg2;
+
+  if (file != NULL)
+  {
+    fwrite (&curr_opcode, sizeof (struct opcode_packed), 1, file);
+  }
+}
+
+void
+gen_bytecode (FILE *src_file)
+{
+  statement *st;
+  lexer_set_file (src_file);
+  parser_init ();
+  st = parser_parse_statement ();
+  assert (st);
+  while (st->type != STMT_EOF)
+  {
+    pp_statement (st);
+    st = parser_parse_statement ();
+    assert (st);
+  }
+  pp_finish ();
+
+  FILE *file = fopen (FILE_NAME, "w+b");
+  int i;
+
+  for (i = 0; i <= 10; i++)
+  {
+    safe_opcode (file, control_op, i, i);
+    safe_opcode (file, decl_op, i, i);
+    safe_opcode (file, call_op, i, i);
+  }
+
+  fclose (file);
+}
+
+void
+run_int ()
+{
+  FILE *file = fopen (FILE_NAME, "rb");
+
+  if (file == NULL)
+  {
+    fputs ("File error", stderr);
+    exit (1);
+  }
+
+  while (!feof (file))
+  {
+    fread (&curr_opcode, sizeof (struct opcode_packed), 1, file);
+
+    //printf ("read %d, %d, %p\n", curr_opcode.arg1, curr_opcode.arg2, curr_opcode.func);
+    curr_opcode.func (curr_opcode.arg1, curr_opcode.arg2);
+  }
+
+  fclose (file);
+}
+

src/libcoreint/interpreter.h

@@ -0,0 +1,39 @@
+/* Copyright 2014 Samsung Electronics Co., Ltd.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/* 
+ * File:   interpreter.h
+ * Author: egavrin
+ *
+ * Created on July 2, 2014, 3:10 PM
+ */
+
+#ifndef INTERPRETER_H
+#define	INTERPRETER_H
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "opcode.h"
+
+#define FILE_NAME "application.bin"
+
+void safe_opcode(FILE *, opcode_ptr, int, int);
+void gen_bytecode(FILE*);
+void run_int();
+
+#endif	/* INTERPRETER_H */
+

src/libcoreint/opcode.c

@@ -0,0 +1,33 @@
+/* Copyright 2014 Samsung Electronics Co., Ltd.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "opcode.h"
+
+#include <stdio.h>
+
+OP_DEFINITION (control_op)
+{
+  printf ("control_op %d, %d\n", arg1, arg2);
+}
+
+OP_DEFINITION (decl_op)
+{
+  printf ("decl_op %d, %d\n", arg1, arg2);
+}
+
+OP_DEFINITION (call_op)
+{
+  printf ("call_op %d, %d\n", arg1, arg2);
+}

src/libcoreint/opcode.h

@@ -0,0 +1,55 @@
+/* Copyright 2014 Samsung Electronics Co., Ltd.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/* 
+ * File:   opcode.h
+ * Author: egavrin
+ *
+ * Created on July 2, 2014, 3:12 PM
+ */
+
+#ifndef OPCODE_H
+#define	OPCODE_H
+
+#define OP_RET_TYPE void
+#define OP_ARG_TYPE int
+
+#define OP_ATTR_DECL OP_ARG_TYPE, OP_ARG_TYPE
+#define OP_ATTR_DEF OP_ARG_TYPE arg1, OP_ARG_TYPE arg2
+
+#define OP_DECLARATION(opname) OP_RET_TYPE opname (OP_ATTR_DECL)
+#define OP_DEFINITION(opname) OP_RET_TYPE opname (OP_ATTR_DEF)
+
+// opcode ptr
+typedef OP_RET_TYPE (*opcode_ptr)(OP_ATTR_DECL);
+
+struct
+__attribute__ ((__packed__))
+opcode_packed
+{
+  opcode_ptr func;
+  OP_ARG_TYPE arg1;
+  OP_ARG_TYPE arg2;
+}
+curr_opcode;
+
+#define INIT_OPCODE_PTR(func) opcode_ptr func_ptr = ptr;
+
+OP_DECLARATION (decl_op);
+OP_DECLARATION (call_op);
+OP_DECLARATION (control_op);
+
+#endif	/* OPCODE_H */
+