X-Git-Url: http://deadsoftware.ru/gitweb?a=blobdiff_plain;f=src%2Fbackends%2Fjvm%2Fgenerator-jvm.c;h=5b45cc166bca184d32d0640a24f9f90a016617ef;hb=b09b4829b70cf34a470003286ea100663d7fe442;hp=da8b06b29f5142a7ea9b25cdd2e6c8ed18a00bb8;hpb=55d9ee92b95dd306ac80fb643ed21d3b733395d7;p=dsw-obn.git

diff --git a/src/backends/jvm/generator-jvm.c b/src/backends/jvm/generator-jvm.c
index da8b06b..5b45cc1 100644
--- a/src/backends/jvm/generator-jvm.c
+++ b/src/backends/jvm/generator-jvm.c
@@ -378,7 +378,7 @@ oberon_generate_procedure_pointer_class(oberon_object_t * proc)
 
 	fprintf(fp, ".field public static pointer %s\n\n", absdesc);
 
-	fprintf(fp, ".method <init>()V\n");
+	fprintf(fp, ".method private <init>()V\n");
 	fprintf(fp, "  aload_0\n");
 	fprintf(fp, "  invokespecial %s/<init>()V\n", abscname);
 	fprintf(fp, "  return\n");
@@ -404,28 +404,27 @@ oberon_generate_procedure_pointer_class(oberon_object_t * proc)
 	oberon_object_t * param = proc -> type -> decl;
 	for(int i = 0; i < num; i++)
 	{
-		gen_var_t * v = oberon_generator_new_var();
 		gen_type_t * t = param -> type -> gen_type;
-		use_size += t -> cell_size;
 		if(param -> class == OBERON_CLASS_VAR_PARAM)
 		{
-			jvm_generate_and_init_var_param(p, v, param -> name, t);
-			jvm_generate_ldst_prepare(p, v);
+			int reg = jvm_alloc_register_untyped(p -> rf, true);
+			jvm_generate(p, 0, 1, "aload %i", reg);
+			jvm_generate(p, 0, 1, "iload %i", reg + 1);
 		}
 		else
 		{
-			jvm_generate_and_init_named_local_var(p, v, param -> name, t);
-			jvm_generate_load(p, v);
+			int reg = jvm_alloc_register_untyped(p -> rf, t -> wide);
+			jvm_generate(p, 0, t -> cell_size, "%cload %i", t -> prefix, reg);
 		}
+		use_size += t -> cell_size;
 		param = param -> next;
 	}
-
 	
 	char * full_name = jvm_get_field_full_name(proc);
 	int cell_size = jvm_cell_size_for_type(proc -> type -> base);
 	jvm_generate(p, use_size, cell_size, "invokestatic %s%s", full_name, signature);
 
-	if(proc -> type -> base -> class == OBERON_TYPE_VOID)
+	if(proc -> type -> base -> class == OBERON_TYPE_NOTYPE)
 	{
 		jvm_generate(p, 0, 0, "return");
 	}
@@ -476,18 +475,10 @@ oberon_generator_init_type(oberon_context_t * ctx, oberon_type_t * type)
 	memset(t, 0, sizeof *t);
 	type -> gen_type = t;
 
-	if(type -> class != OBERON_TYPE_VOID)
-	{
-		t -> wide = jvm_is_wide_type(type);
-		t -> prefix = jvm_get_prefix(type);
-		t -> postfix = jvm_get_postfix(type);
-	}
-	t -> cell_size = jvm_cell_size_for_type(type);
-	t -> desc = jvm_get_descriptor(type);
-
+	gen_module_t * m;
 	switch(type -> class)
 	{
-		case OBERON_TYPE_VOID:
+		case OBERON_TYPE_NOTYPE:
 		case OBERON_TYPE_INTEGER:
 		case OBERON_TYPE_BOOLEAN:
 		case OBERON_TYPE_ARRAY:
@@ -496,10 +487,9 @@ oberon_generator_init_type(oberon_context_t * ctx, oberon_type_t * type)
 		case OBERON_TYPE_CHAR:
 		case OBERON_TYPE_STRING:
 		case OBERON_TYPE_SET:
+		case OBERON_TYPE_NIL:
 			break;
 		case OBERON_TYPE_RECORD:
-			;
-			gen_module_t * m;
 			m = type -> module -> gen_mod;
 			oberon_generate_record_class(m, type);
 			break;
@@ -510,6 +500,20 @@ oberon_generator_init_type(oberon_context_t * ctx, oberon_type_t * type)
 			gen_error("oberon_generator_init_type: unk calss %i", type -> class);
 			break;
 	}
+
+	if(type -> class != OBERON_TYPE_NOTYPE)
+	{
+		t -> wide = jvm_is_wide_type(type);
+		t -> prefix = jvm_get_prefix(type);
+		t -> postfix = jvm_get_postfix(type);
+	}
+
+	t -> cell_size = jvm_cell_size_for_type(type);
+
+	if(type -> class != OBERON_TYPE_NIL)
+	{
+		t -> desc = jvm_get_descriptor(type);
+	}
 }
 
 void
@@ -522,10 +526,7 @@ oberon_generator_init_record(oberon_context_t * ctx, oberon_type_t * rec)
 	oberon_object_t * field = rec -> decl;
 	for(int i = 0; i < num; i++)
 	{
-		char * name = field -> name;
-		gen_var_t * v = field -> gen_var;
-		gen_type_t * t = field -> type -> gen_type;
-		jvm_generate_and_init_field(class, v, name, t);
+		jvm_generate_var(field -> gen_var);
 		field = field -> next;
 	}
 
@@ -548,7 +549,7 @@ oberon_generator_init_record(oberon_context_t * ctx, oberon_type_t * rec)
 	for(int i = 0; i < num; i++)
 	{
 		jvm_generate(p, 0, 1, "aload_0");
-		jvm_generate_variable_initialization(p, field -> gen_var);
+		jvm_generate_var_initialization(p, field -> gen_var);
 
 		if(field -> type -> class == OBERON_TYPE_RECORD
 			|| field -> type -> class == OBERON_TYPE_ARRAY)
@@ -566,12 +567,16 @@ oberon_generator_init_record(oberon_context_t * ctx, oberon_type_t * rec)
 	/* Метод для копирования полей класса */
 	/* reg0 == src -> reg1 == dst */
 	p = jvm_create_proc(class);
-	gen_var_t * copy_dst = oberon_generator_new_var();
-	gen_var_t * copy_src = oberon_generator_new_var();
 	char * signature = new_string("(%s%s)V", rec -> gen_type -> desc, rec -> gen_type -> desc);
 	jvm_generate_function_header(p, "public static", "$COPY$", signature);
-	jvm_generate_and_init_named_local_var(p, copy_dst, "dst", rec -> gen_type);
-	jvm_generate_and_init_named_local_var(p, copy_src, "src", rec -> gen_type);
+
+	gen_var_t * copy_dst = jvm_create_function_var(p, JVM_STORAGE_REGISTER, "dst", rec -> gen_type);
+	gen_var_t * copy_src = jvm_create_function_var(p, JVM_STORAGE_REGISTER, "src", rec -> gen_type);
+	jvm_generate_var(copy_dst);
+	jvm_generate_var(copy_src);
+	jvm_generate_var_initialization(p, copy_dst);
+	jvm_generate_var_initialization(p, copy_src);
+
 	num = rec -> num_decl;
 	field = rec -> decl;
 	for(int i = 0; i < num; i++)
@@ -611,32 +616,40 @@ oberon_generator_init_record(oberon_context_t * ctx, oberon_type_t * rec)
 void
 oberon_generator_init_var(oberon_context_t * ctx, oberon_object_t * var)
 {
-	gen_var_t * v = oberon_generator_new_var();
-	var -> gen_var = v;
-
 	gen_module_t * m;
 	m = ctx -> mod -> gen_mod;
 
 	struct gen_class * class;
 	class = m -> class;
 
+	gen_proc_t * p;
+	struct gen_class * c;
+	char * name = var -> name;
+	gen_type_t * t = var -> type -> gen_type;
 	switch(var -> class)
 	{
 		case OBERON_CLASS_VAR_PARAM:
+			p = var -> parent -> gen_proc;
+			var -> gen_var = jvm_create_function_var(p, JVM_STORAGE_FRAME_PARAM_VARPTR, name, t);
+			break;
 		case OBERON_CLASS_PARAM:
-			/* Заполняется при генерации функции */
-			/* смотри jvm_init_local_object() */
+			p = var -> parent -> gen_proc;
+			var -> gen_var = jvm_create_function_var(p, JVM_STORAGE_FRAME_PARAM_VAR, name, t);
 			break;
 		case OBERON_CLASS_FIELD:
-			/* Заполняются при инициализации структуры */
-			/* смотри oberon_generator_init_record() */
+			c = var -> parent_type -> gen_type -> class;
+			var -> gen_var = jvm_create_class_var(c, JVM_STORAGE_FIELD_VAR, name, t);
 			break;
 		case OBERON_CLASS_VAR:
-			/* Локальные заполняются при генерации функции */
-			/* смотри jvm_init_local_object() */
-			if(var -> local == false)
+			if(var -> local)
+			{
+				p = var -> parent -> gen_proc;
+				var -> gen_var = jvm_create_function_var(p, JVM_STORAGE_FRAME_VAR, name, t);
+			}
+			else
 			{
-				jvm_generate_and_init_global_var(class, v, var -> name, var -> type -> gen_type);
+				var -> gen_var = jvm_create_class_var(class, JVM_STORAGE_STATIC_VAR, name, t);
+				jvm_generate_var(var -> gen_var);
 			}
 			break;
 		default:
@@ -650,16 +663,18 @@ oberon_generator_init_temp_var(oberon_context_t * ctx, oberon_object_t * var)
 {
 	assert(var -> class == OBERON_CLASS_VAR);
 
-	gen_var_t * v = oberon_generator_new_var();
-	var -> gen_var = v;
-
 	gen_module_t * m;
 	m = ctx -> mod -> gen_mod;
 
 	gen_proc_t * p;
 	p = m -> class -> p;
 
-	jvm_generate_and_init_local_var(p, v, var -> type -> gen_type);
+	gen_type_t * t;
+	t = var -> type -> gen_type;
+
+	var -> gen_var = jvm_create_function_temp_var(p, t);
+	jvm_generate_var(var -> gen_var);
+	jvm_generate_var_initialization(p, var -> gen_var);
 }
 
 void
@@ -667,15 +682,8 @@ oberon_generator_init_proc(oberon_context_t * ctx, oberon_object_t * proc)
 {
 	struct gen_class * class = proc -> module -> gen_mod -> class;
 	proc -> gen_proc = jvm_create_proc(class);
-
-	if(proc -> local)
-	{
-		gen_error("generator: local procedures not implemented");
-	}
-	else
-	{
-		oberon_generate_procedure_pointer_class(proc);
-	}
+	proc -> gen_proc -> full_name = jvm_get_field_full_name_safe(proc);
+	jvm_create_static_links(proc);
 }
 
 void
@@ -723,7 +731,7 @@ oberon_generate_begin_module(oberon_context_t * ctx)
 	{
 		if(x -> class == OBERON_CLASS_VAR)
 		{
-			jvm_generate_variable_initialization(p, x -> gen_var);
+			jvm_generate_var_initialization(p, x -> gen_var);
 			if(x -> type -> class == OBERON_TYPE_ARRAY
 				|| x -> type -> class == OBERON_TYPE_RECORD)
 			{
@@ -802,7 +810,7 @@ jvm_generate_record_duplicate_and_replace(gen_proc_t * p, gen_var_t * v, oberon_
 }
 
 static void
-jvm_init_local_object(gen_proc_t * p, oberon_object_t * x)
+jvm_generate_local_object(gen_proc_t * p, oberon_object_t * x)
 {
 	gen_var_t * v;
 	struct gen_class * class;
@@ -817,14 +825,14 @@ jvm_init_local_object(gen_proc_t * p, oberon_object_t * x)
 	switch(x -> class)
 	{
 		case OBERON_CLASS_VAR_PARAM:
-			jvm_generate_and_init_var_param(p, v, x -> name, x -> type -> gen_type);
-			break;
-		case OBERON_CLASS_VAR:
 		case OBERON_CLASS_PARAM:
-			jvm_generate_and_init_named_local_var(p, v, x -> name, x -> type -> gen_type);
+		case OBERON_CLASS_VAR:
+			jvm_generate_var(v);
+			break;
+		case OBERON_CLASS_PROC:
 			break;
 		default:
-			gen_error("jvm_init_local_object: wat");
+			gen_error("jvm_generate_local_initialization: wat");
 			break;
 	}
 }
@@ -845,63 +853,77 @@ jvm_generate_local_initialization(gen_proc_t * p, oberon_object_t * x)
 	switch(x -> class)
 	{
 		case OBERON_CLASS_VAR_PARAM:
-			break;
+		case OBERON_CLASS_PARAM:
 		case OBERON_CLASS_VAR:
-			jvm_generate_variable_initialization(p, v);
+			jvm_generate_var_initialization(p, v);
 			break;
-		case OBERON_CLASS_PARAM:
-			jvm_generate_param_initialization(p, v);
+		case OBERON_CLASS_PROC:
 			break;
 		default:
 			gen_error("jvm_generate_local_initialization: wat");
 			break;
 	}
+
+	if(x -> class == OBERON_CLASS_PARAM)
+	{
+		if(x -> type -> class == OBERON_TYPE_ARRAY)
+		{
+			jvm_generate_array_duplicate_and_replace(p, v, x -> type);
+		}
+		else if(x -> type -> class == OBERON_TYPE_RECORD)
+		{				
+			jvm_generate_record_duplicate_and_replace(p, v, x -> type);
+		}
+	}
 }
 
 void
 oberon_generate_begin_proc(oberon_context_t * ctx, oberon_object_t * proc)
 {
 	gen_proc_t * p;
+	char * name;
 	char * signature;
+	oberon_object_t * var;
 
 	p = proc -> gen_proc;
 
-	signature = jvm_get_procedure_signature(proc -> type);
-	jvm_generate_function_header(p, "public static", proc -> name, signature);
+	if(proc -> local)
+	{
+		signature = jvm_get_local_procedure_signature(proc);
+	}
+	else
+	{
+		oberon_generate_procedure_pointer_class(proc);
+		signature = jvm_get_procedure_signature(proc -> type);
+	}
 
-	/* Выделение регистров под параметры и переменные */
-	oberon_object_t * var = proc -> scope -> list -> next;
-	while(var)
+	name = jvm_get_name(proc);
+	jvm_generate_function_header(p, "public static", name, signature);
+
+	if(proc -> local)
 	{
-		jvm_init_local_object(p, var);
-		var = var -> next;
+		jvm_generate_staticlinks(proc);
 	}
 
-	/* Инициализация */
+	jvm_generate_procedure_frame(proc);
+
+	/* Создание парамеров и переменных */
 	var = proc -> scope -> list -> next;
 	while(var)
 	{
-		jvm_generate_local_initialization(p, var);
+		jvm_generate_local_object(p, var);
 		var = var -> next;
 	}
 
-	/* Копирование статических/открытых массивов и записей */
-	var = proc -> type -> decl;
+	jvm_generate_frame_initialization(p);
+
+	/* Инициализация парамеров и переменных */
+	var = proc -> scope -> list -> next;
 	while(var)
 	{
-		if(var -> class == OBERON_CLASS_PARAM || var -> class == OBERON_CLASS_VAR_PARAM)
-		{
-			if(var -> type -> class == OBERON_TYPE_ARRAY)
-			{
-				jvm_generate_array_duplicate_and_replace(p, var -> gen_var, var -> type);
-			}
-			else if(var -> type -> class == OBERON_TYPE_RECORD)
-			{				
-				jvm_generate_record_duplicate_and_replace(p, var -> gen_var, var -> type);
-			}
-		}
+		jvm_generate_local_initialization(p, var);
 		var = var -> next;
-	}	
+	}
 }
 
 void
@@ -1010,8 +1032,6 @@ jvm_generate_call_proc(gen_proc_t * p, oberon_item_t * desig)
 	assert(desig -> var == NULL);
 	assert(desig -> mode == MODE_CALL);
 
-	char * signature = NULL;
-
 	bool direct_call = false;
 	if(desig -> parent -> mode == MODE_VAR)
 	{
@@ -1021,11 +1041,8 @@ jvm_generate_call_proc(gen_proc_t * p, oberon_item_t * desig)
 		}
 	}
 
-	printf("direct_call == %i\n", direct_call);
-
 	oberon_type_t * procsig;
 	procsig = desig -> parent -> result;
-	signature = jvm_get_procedure_signature(procsig);
 
 	if(direct_call == false)
 	{
@@ -1033,6 +1050,11 @@ jvm_generate_call_proc(gen_proc_t * p, oberon_item_t * desig)
 		push_item(p, desig -> parent);
 	}
 
+	if(direct_call)
+	{
+		jvm_generate_push_static_links(p, desig -> parent -> var);
+	}
+
 	int args_cells = 0;
 	int result_cells = jvm_cell_size_for_type(procsig -> base);
 
@@ -1058,11 +1080,13 @@ jvm_generate_call_proc(gen_proc_t * p, oberon_item_t * desig)
 	if(direct_call)
 	{
 		char * full_name = jvm_get_field_full_name(desig -> parent -> var);
+		char * signature = jvm_get_local_procedure_signature(desig -> parent -> var);
 		jvm_generate(p, args_cells, result_cells, "invokestatic %s%s", full_name, signature);
 	}
 	else
 	{
 		char * cname = jvm_get_class_full_name(procsig);
+		char * signature = jvm_get_procedure_signature(procsig);
 		jvm_generate(p, 1 + args_cells, result_cells, "invokevirtual %s/invoke%s", cname, signature);
 	}
 }
@@ -1112,29 +1136,35 @@ jvm_generate_expr_new_pointer(gen_proc_t * p, oberon_type_t * type, int num, obe
 	jvm_generate_new(p, type -> base, num);
 }
 
+static void
+jvm_generate_cast_prefix(gen_proc_t * p, char prefix, char postfix)
+{
+	if(prefix == postfix)
+	{
+		return;
+	}
+
+	int from_cell_size = jvm_cell_size_for_postfix(prefix);
+	int to_cell_size = jvm_cell_size_for_postfix(postfix);
+	jvm_generate(p, from_cell_size, to_cell_size, "%c2%c", prefix, postfix);
+}
+
 static void
 jvm_generate_cast_type(gen_proc_t * p, oberon_type_t * from, oberon_type_t * to)
 {
 	if(to -> class == OBERON_TYPE_RECORD || to -> class == OBERON_TYPE_POINTER)
 	{
-		char * full_name = jvm_get_class_full_name(to);
-		jvm_generate(p, 1, 1, "checkcast %s", full_name);
+		if(to -> class == OBERON_TYPE_POINTER && to -> base -> class == OBERON_TYPE_RECORD)
+		{
+			char * full_name = jvm_get_class_full_name(to);
+			jvm_generate(p, 1, 1, "checkcast %s", full_name);
+		}
 	}
 	else
 	{
 		char prefix = jvm_get_prefix(from);
 		char postfix = jvm_get_postfix(to);
-		int from_cell_size = jvm_cell_size_for_type(from);
-		int to_cell_size = jvm_cell_size_for_type(to);
-
-		jvm_generate_comment(p, "cast type class from %i(%i) to %i(%i)", from -> class, from -> size, to -> class, to -> size);
-
-		if(prefix == postfix)
-		{
-			return;
-		}
-
-		jvm_generate(p, from_cell_size, to_cell_size, "%c2%c", prefix, postfix);
+		jvm_generate_cast_prefix(p, prefix, postfix);
 	}
 }
 
@@ -1154,13 +1184,11 @@ push_item(gen_proc_t * p, oberon_item_t * item)
 			}
 			break;
 		case MODE_INTEGER:
+		case MODE_BOOLEAN:
 		case MODE_CHAR:
 		case MODE_SET:
 			jvm_generate_push_int_size(p, item -> integer, item -> result -> size);
 			break;
-		case MODE_BOOLEAN:
-			jvm_generate_push_int_size(p, item -> boolean, item -> result -> size);
-			break;
 		case MODE_CALL:
 			jvm_generate_call_proc(p, item);
 			break;
@@ -1168,20 +1196,17 @@ push_item(gen_proc_t * p, oberon_item_t * item)
 			;
 			char postfix = jvm_get_postfix(item -> result);
 			int cell_size = jvm_cell_size_for_postfix(postfix);
-			assert(item -> parent -> is_item);
-			push_item(p, (oberon_item_t *) item -> parent);
+			push_item(p, item -> parent);
 			push_expr(p, item -> args);
 			jvm_generate(p, 1 + 1, cell_size, "%caload", postfix);
 			break;
 		case MODE_FIELD:
-			assert(item -> parent -> is_item);
-			push_item(p, (oberon_item_t *) item -> parent);
+			push_item(p, item -> parent);
 			jvm_generate_load(p, item -> var -> gen_var);
 			break;
 		case MODE_DEREF:
 			/* Все объекты в jvm представляются как указатели */
-			assert(item -> parent -> is_item);
-			push_item(p, (oberon_item_t *) item -> parent);
+			push_item(p, item -> parent);
 			break;
 		case MODE_NIL:
 			jvm_generate(p, 0, 1, "aconst_null");
@@ -1195,6 +1220,11 @@ push_item(gen_proc_t * p, oberon_item_t * item)
 		case MODE_STRING:
 			jvm_generate_push_string(p, item -> string, item -> result -> size);
 			break;
+		case MODE_LEN:
+			push_item(p, item -> parent);
+			jvm_generate_array_len(p, item -> integer);
+			jvm_generate_cast_prefix(p, 'i', jvm_get_postfix(item -> result));
+			break;
 		default:
 			gen_error("push_item: unk mode %i", item -> mode);
 			break;
@@ -1282,6 +1312,19 @@ jvm_generate_compare_op(gen_proc_t * p, oberon_type_t * t, int op)
 		jvm_generate(p, 2 * cell_size, 1, "%ccmp%c", prefix, fop);
 		jvm_generate(p, 1, 1, "if%s L%i", cmpop, label_true);
 	}
+	else if(prefix == 'a')
+	{
+		if(t -> class == OBERON_TYPE_STRING
+			|| (t -> class == OBERON_TYPE_POINTER && t -> base -> class == OBERON_TYPE_CHAR))
+		{
+			jvm_generate(p, 2, 1, "invokestatic SYSTEM/STRCMP([B[B)I");
+			jvm_generate(p, 1, 0, "if%s L%i", cmpop, label_true);
+		}
+		else
+		{
+			jvm_generate(p, 1, 0, "if_acmp%s L%i", cmpop, label_true);
+		}
+	}
 	else
 	{
 		jvm_generate(p, 2 * cell_size, 0, "if_%ccmp%s L%i", prefix, cmpop, label_true);
@@ -1314,6 +1357,9 @@ jvm_generate_operator(gen_proc_t * p, oberon_type_t * t, int op)
 		case OP_ABS:
 			jvm_generate_abs(p, prefix);
 			break;
+		case OP_CAP:
+			jvm_generate(p, cell_size, cell_size, "invokestatic java/lang/Character/toUpperCase(I)I");
+			break;
 
 		case OP_ADD:
 			jvm_generate(p, 2 * cell_size, cell_size, "%cadd", prefix);
@@ -1337,6 +1383,7 @@ jvm_generate_operator(gen_proc_t * p, oberon_type_t * t, int op)
 			jvm_generate(p, 2 * cell_size, cell_size, "%cand", prefix);
 			break;
 		case OP_DIFFERENCE:
+			/* (a - b) == a & ~b */
 			jvm_generate_push_int_size(p, -1, t -> size);
 			jvm_generate(p, 2 * cell_size, cell_size, "%cxor", prefix);
 			jvm_generate(p, 2 * cell_size, cell_size, "%cand", prefix);
@@ -1419,10 +1466,12 @@ jvm_generate_range(gen_proc_t * p, oberon_expr_t * a, oberon_expr_t * b)
 	}
 	else
 	{
-		ra = oberon_generator_new_var();
-		rb = oberon_generator_new_var();
-		jvm_generate_and_init_local_var(p, ra, type -> gen_type);
-		jvm_generate_and_init_local_var(p, rb, type -> gen_type);
+		ra = jvm_create_function_temp_var(p, type -> gen_type);
+		rb = jvm_create_function_temp_var(p, type -> gen_type);
+		jvm_generate_var(ra);
+		jvm_generate_var(rb);
+		jvm_generate_var_initialization(p, ra);
+		jvm_generate_var_initialization(p, rb);
 		label_else = jvm_new_label_id(p);
 		label_end = jvm_new_label_id(p);
 
@@ -1461,6 +1510,7 @@ jvm_generate_in(gen_proc_t * p, oberon_expr_t * a, oberon_expr_t * b)
 	int label_else = jvm_new_label_id(p);
 	int label_end = jvm_new_label_id(p);
 
+	/* (a IN b) == (1 << a) & b */
 	jvm_generate_push_int_size(p, 1, t -> size);
 	push_expr(p, a);
 	jvm_generate(p, 2 * cell_size, cell_size, "%cshl", prefix);
@@ -1480,6 +1530,51 @@ jvm_generate_in(gen_proc_t * p, oberon_expr_t * a, oberon_expr_t * b)
 	jvm_generate_label(p, label_end);
 }
 
+static void
+jvm_generate_ash(gen_proc_t * p, oberon_expr_t * a, oberon_expr_t * b)
+{
+	oberon_type_t * t = a -> result;
+	int cell_size = jvm_cell_size_for_type(t);
+	char prefix = jvm_get_prefix(t);
+	int label_else = jvm_new_label_id(p);
+	int label_end = jvm_new_label_id(p);
+
+	/* if b < 0 then a << b else a >> b end */
+
+	push_expr(p, a);
+	push_expr(p, b);
+	if(cell_size == 1)
+	{
+		jvm_generate(p, cell_size, 2 * cell_size, "dup");
+	}
+	else
+	{
+		jvm_generate(p, cell_size, 2 * cell_size, "dup2");
+	}
+	jvm_generate_push_int_size(p, 0, t -> size);
+	jvm_generate_compare_op(p, t, OP_LSS);
+
+	jvm_generate(p, cell_size, 0, "ifne L%i", label_else);
+	jvm_generate(p, 2 * cell_size, cell_size, "%cshl", prefix);
+	jvm_generate(p, 0, 0, "goto L%i", label_end);
+	jvm_generate_label(p, label_else);
+	jvm_generate_abs(p, prefix);	
+	jvm_generate(p, 2 * cell_size, cell_size, "%cshr", prefix);
+	jvm_generate_label(p, label_end);
+}
+
+static void
+jvm_generate_entier(gen_proc_t * p, oberon_expr_t * x, oberon_type_t * res)
+{
+	char prefix = jvm_get_prefix(x -> result);
+	char postfix = jvm_get_postfix(res);
+
+	push_expr(p, x);
+	jvm_generate_cast_prefix(p, prefix, 'd');
+	jvm_generate(p, 2, 2, "invokestatic java/lang/Math/floor(D)D");
+	jvm_generate_cast_prefix(p, 'd', postfix);
+}
+
 static void
 push_operator(gen_proc_t * p, oberon_oper_t * oper)
 {
@@ -1495,9 +1590,13 @@ push_operator(gen_proc_t * p, oberon_oper_t * oper)
 		case OP_UNARY_MINUS:
 		case OP_LOGIC_NOT:
 		case OP_ABS:
+		case OP_CAP:
 			push_expr(p, oper -> left);
 			jvm_generate_operator(p, preq, op);
 			break;
+		case OP_ENTIER:
+			jvm_generate_entier(p, oper -> left, oper -> result);
+			break;
 
 		case OP_ADD:
 		case OP_SUB:
@@ -1540,6 +1639,10 @@ push_operator(gen_proc_t * p, oberon_oper_t * oper)
 		case OP_IN:
 			jvm_generate_in(p, oper -> left, oper -> right);
 			break;
+
+		case OP_ASH:
+			jvm_generate_ash(p, oper -> left, oper -> right);
+			break;
 		default:
 			gen_error("push_oper: unk op %i", op);
 			break;
@@ -1622,27 +1725,73 @@ oberon_generate_assign(oberon_context_t * ctx, oberon_expr_t * src, oberon_expr_
 }
 
 void
-oberon_generate_code(oberon_context_t * ctx)
+oberon_generate_copy(oberon_context_t * ctx, oberon_expr_t * src, oberon_expr_t * dst)
+{
+	gen_module_t * m;
+	gen_proc_t * p;
+	char * desc;
+
+	m = ctx -> mod -> gen_mod;
+	p = m -> class -> p;
+
+	push_expr(p, src);
+	push_expr(p, dst);
+
+	desc = jvm_get_descriptor(dst -> result);
+
+	jvm_generate(p, 2, 0, "invokestatic SYSTEM/COPY(%s%s)V", desc, desc);
+}
+
+void
+oberon_generate_assert(oberon_context_t * ctx, oberon_expr_t * cond)
 {
-	printf("generate code\n");
+	gen_module_t * m;
+	gen_proc_t * p;
+
+	m = ctx -> mod -> gen_mod;
+	p = m -> class -> p;
+
+	push_expr(p, cond);
+	jvm_generate(p, 1, 0, "invokestatic SYSTEM/ASSERT(Z)V");
 }
 
 void
-oberon_generator_dump(oberon_context_t * ctx, char * path)
+oberon_generate_assert_n(oberon_context_t * ctx, oberon_expr_t * cond, int64_t n)
 {
-	printf("jit: dump code\n");
+	gen_module_t * m;
+	gen_proc_t * p;
+
+	m = ctx -> mod -> gen_mod;
+	p = m -> class -> p;
+
+	push_expr(p, cond);
+	jvm_generate_push_int_size(p, n, 8);
+	jvm_generate(p, 1 + 2, 0, "invokestatic SYSTEM/ASSERT(ZJ)V");
 }
 
-void *
-oberon_generator_get_procedure(oberon_context_t * ctx, const char * name)
+void
+oberon_generate_trap(oberon_context_t * ctx, int64_t n)
 {
-	printf("jit: get pointer to procedure %s\n", name);
-	return NULL;
+	gen_module_t * m;
+	gen_proc_t * p;
+
+	m = ctx -> mod -> gen_mod;
+	p = m -> class -> p;
+
+	jvm_generate_push_int_size(p, n, 8);
+	jvm_generate(p, 2, 0, "invokestatic SYSTEM/TRAP(J)V");
 }
 
-void *
-oberon_generator_get_var(oberon_context_t * ctx, const char * name)
+void
+oberon_generate_halt(oberon_context_t * ctx, int64_t n)
 {
-	printf("jit: get pointer to var %s\n", name);
-	return NULL;
+	gen_module_t * m;
+	gen_proc_t * p;
+
+	m = ctx -> mod -> gen_mod;
+	p = m -> class -> p;
+
+	jvm_generate_push_int_size(p, n, 8);
+	jvm_generate(p, 2, 0, "invokestatic SYSTEM/HALT(J)V");
 }
+