X-Git-Url: https://deadsoftware.ru/gitweb?a=blobdiff_plain;f=src%2Fbackends%2Fjvm%2Fgenerator-jvm.c;h=ca0f88565536d1ae11ce2022c4713099fb9bcf0c;hb=99fa357db44a4c30957bd0810e14a20456c58347;hp=f111fd16eff755440676a4b6a6e433713cc43b4b;hpb=86c0ca1aafd465a3e0d4a9d6b1af661eba483ae1;p=dsw-obn.git

diff --git a/src/backends/jvm/generator-jvm.c b/src/backends/jvm/generator-jvm.c
index f111fd1..ca0f885 100644
--- a/src/backends/jvm/generator-jvm.c
+++ b/src/backends/jvm/generator-jvm.c
@@ -1036,6 +1036,26 @@ oberon_generator_init_var(oberon_context_t * ctx, oberon_object_t * var)
 	}
 }
 
+void
+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;
+
+	bool wide;
+	wide = jvm_is_wide_type(var -> type);
+
+	jvm_generate_and_init_local_var(v, p, wide);
+}
+
 void
 oberon_generator_init_proc(oberon_context_t * ctx, oberon_object_t * proc)
 {
@@ -1247,6 +1267,70 @@ oberon_generate_end_proc(oberon_context_t * ctx)
 	jvm_generate_function_end(p);
 }
 
+gen_label_t *
+oberon_generator_reserve_label(oberon_context_t * ctx)
+{
+	gen_module_t * m;
+	gen_proc_t * p;
+	gen_label_t * l;
+
+	m = ctx -> mod -> gen_mod;
+	p = m -> class -> p;
+
+	l = GC_MALLOC(sizeof *l);
+	memset(l, 0, sizeof *l);
+
+	l -> id = jvm_new_label_id(p);
+	return l;
+}
+
+void
+oberon_generate_label(oberon_context_t * ctx, gen_label_t * l)
+{
+	gen_module_t * m;
+	gen_proc_t * p;
+
+	m = ctx -> mod -> gen_mod;
+	p = m -> class -> p;
+
+	jvm_generate_label(p, l -> id);
+}
+
+void
+oberon_generate_goto(oberon_context_t * ctx, gen_label_t * l)
+{
+	gen_module_t * m;
+	gen_proc_t * p;
+
+	m = ctx -> mod -> gen_mod;
+	p = m -> class -> p;
+
+	jvm_generate(p, 0, 0, "goto L%i", l -> id);
+}
+
+void
+oberon_generate_branch(oberon_context_t * ctx, oberon_expr_t * cond, bool gotoif, gen_label_t * l)
+{
+	gen_module_t * m;
+	gen_proc_t * p;
+
+	m = ctx -> mod -> gen_mod;
+	p = m -> class -> p;
+
+	push_expr(p, cond);
+
+	if(gotoif == false)
+	{
+		/* переход если false */
+		jvm_generate(p, 1, 0, "ifeq L%i", l -> id);
+	}
+	else
+	{
+		/* переход если true */
+		jvm_generate(p, 1, 0, "ifne L%i", l -> id);
+	}
+}
+
 static void
 jvm_generate_call_proc(gen_proc_t * p, oberon_item_t * desig)
 {
@@ -1457,18 +1541,10 @@ jvm_generate_abs(gen_proc_t * p, char prefix)
 	jvm_generate(p, cell_size, cell_size, "invokestatic java/lang/Math/abs(%c)%c", t, t);
 }
 
-static void
-jvm_generate_compare_op(gen_proc_t * p, char prefix, int op)
+static char *
+jvm_get_compare_postfix(int op)
 {
-	int label_true = jvm_new_label_id(p);
-	int label_done = jvm_new_label_id(p);
-	char * label_name_true = jvm_get_label_name(label_true);
-	char * label_name_done = jvm_get_label_name(label_done);
-	int cell_size = 2 * jvm_cell_size_for_postfix(prefix);
-
-	assert(prefix == 'i' || prefix == 'a');
-
-	const char * cmpop = "";
+	char * cmpop = "";
 	switch(op)
 	{
 		case OP_EQ:
@@ -1493,17 +1569,51 @@ jvm_generate_compare_op(gen_proc_t * p, char prefix, int op)
 			gen_error("jvm_generate_compare_op: wat");
 			break;
 	}
+	return cmpop;
+}
+
+static void
+jvm_generate_compare_op(gen_proc_t * p, oberon_type_t * t, int op)
+{
+	char prefix = jvm_get_prefix(t);
+	int label_true = jvm_new_label_id(p);
+	int label_done = jvm_new_label_id(p);
+	int cell_size = jvm_cell_size_for_type(t);
+	char * cmpop = jvm_get_compare_postfix(op);
+
+	if(prefix == 'l')
+	{
+		jvm_generate(p, 2 * cell_size, 1, "lcmp");
+		jvm_generate(p, 1, 1, "if%s L%i", cmpop, label_true);
+	}
+	else if(prefix == 'f' || prefix == 'd')
+	{
+		char fop;
+		if(op == OP_EQ || op == OP_NEQ || op == OP_GRT || op == OP_GEQ)
+		{
+			fop = 'l';
+		}
+		else
+		{
+			fop = 'g';
+		}
+		jvm_generate(p, 2 * cell_size, 1, "%ccmp%c", prefix, fop);
+		jvm_generate(p, 1, 1, "if%s L%i", cmpop, label_true);
+	}
+	else
+	{
+		jvm_generate(p, 2 * cell_size, 0, "if_%ccmp%s L%i", prefix, cmpop, label_true);
+	}
 
-	jvm_generate(p, cell_size, 0, "if_%ccmp%s %s", prefix, cmpop, label_name_true);
 	jvm_generate(p, 0, 1, "iconst_0");
-	jvm_generate(p, 0, 0, "goto %s", label_name_done);
+	jvm_generate(p, 0, 0, "goto L%i", label_done);
 	jvm_generate_label(p, label_true);
 	jvm_generate(p, 0, 1, "iconst_1");
 	jvm_generate_label(p, label_done);
 }
 
 static void
-jvm_generate_operator(gen_proc_t * p, char prefix, int op)
+jvm_generate_operator(gen_proc_t * p, oberon_type_t * t, char prefix, int op)
 {
 	int cell_size = jvm_cell_size_for_postfix(prefix);
 	switch(op)
@@ -1553,7 +1663,7 @@ jvm_generate_operator(gen_proc_t * p, char prefix, int op)
 		case OP_LEQ:
 		case OP_GRT:
 		case OP_GEQ:
-			jvm_generate_compare_op(p, prefix, op);
+			jvm_generate_compare_op(p, t, op);
 			break;
 		default:
 			gen_error("jvm_generate_operator: unk op %i", op);
@@ -1602,6 +1712,7 @@ jvm_generate_logical_and(gen_proc_t * p, oberon_expr_t * a, oberon_expr_t * b)
 static void
 push_operator(gen_proc_t * p, oberon_oper_t * oper)
 {
+	oberon_type_t * preq = oper -> left -> result;
 	char prefix = jvm_get_prefix(oper -> result);
 	int op = oper -> op;
 	switch(op)
@@ -1615,7 +1726,7 @@ push_operator(gen_proc_t * p, oberon_oper_t * oper)
 		case OP_LOGIC_NOT:
 		case OP_ABS:
 			push_expr(p, oper -> left);
-			jvm_generate_operator(p, prefix, op);
+			jvm_generate_operator(p, preq, prefix, op);
 			break;
 
 		case OP_ADD:
@@ -1635,7 +1746,7 @@ push_operator(gen_proc_t * p, oberon_oper_t * oper)
 		case OP_GEQ:
 			push_expr(p, oper -> left);
 			push_expr(p, oper -> right);
-			jvm_generate_operator(p, prefix, op);
+			jvm_generate_operator(p, preq, prefix, op);
 			break;
 
 		case OP_LOGIC_OR: