X-Git-Url: http://deadsoftware.ru/gitweb?a=blobdiff_plain;f=src%2Fbackends%2Fjvm%2Fgenerator-jvm-abi.c;h=ddaf45f77cfe6e9e66b535adef6e1413ee5144fa;hb=3cd41dedaffe60018890cbe66baea63691fe62e8;hp=0db2cc88b29bf3454d99b390ea5ff4bc151e0804;hpb=1ef429eea9ba6825395446aac0b5980454ac0383;p=dsw-obn.git

diff --git a/src/backends/jvm/generator-jvm-abi.c b/src/backends/jvm/generator-jvm-abi.c
index 0db2cc8..ddaf45f 100644
--- a/src/backends/jvm/generator-jvm-abi.c
+++ b/src/backends/jvm/generator-jvm-abi.c
@@ -15,20 +15,6 @@
 #include "generator-jvm-asm.h"
 #include "generator-jvm-basic.h"
 
-/*
- *   --- Каждый модуль является объектом.
- *       Импортируемые модули представляются полями.
- *       Каждая глобальная переменная представляется не статическим полем.
- *       Каждая процедура представляется не статическим метеодом.
- *       Процедура инициализации модуля имеет название BEGIN.
- *       Процедура финализации модуля имеет название END.
- *         Это позволит сделать динамическую загрузку и выгрузку.
- *   +++ всем переменным и полям в дескриптор добавляется "["
- *         Это позволит делать ссылки на переменные в VAR-параметрах.
- *   --- Каждая процедура снабжается параметром-фреймом.
- *         Это позволит реализовать локальные процедуры и средства рефлекции над стеком.
- */ 
-
 void
 jvm_generate_ldst_prepare(gen_proc_t * p, gen_var_t * v)
 {
@@ -60,18 +46,18 @@ jvm_generate_ldst_prepare(gen_proc_t * p, gen_var_t * v)
 			break;
 		case JVM_STORAGE_FRAME:
 		case JVM_STORAGE_FRAME_PARAM:
-			jvm_generate_load(p, p -> frame_v);
+			jvm_generate(p, 0, 1, "aload %i", p -> reg_frame[v -> level]);
 			break;
 		case JVM_STORAGE_FRAME_VAR:
 		case JVM_STORAGE_FRAME_PARAM_VAR:
-			jvm_generate_load(p, p -> frame_v);
+			jvm_generate(p, 0, 1, "aload %i", p -> reg_frame[v -> level]);
 			jvm_generate(p, 1, 1, "getfield %s [%s", full_name, desc);
 			jvm_generate(p, 0, 1, "iconst_0");
 			break;
 		case JVM_STORAGE_FRAME_PARAM_VARPTR:
-			jvm_generate_load(p, p -> frame_v);
+			jvm_generate(p, 0, 1, "aload %i", p -> reg_frame[v -> level]);
 			jvm_generate(p, 1, 1, "getfield %s [%s", full_name, desc);
-			jvm_generate_load(p, p -> frame_v);
+			jvm_generate(p, 0, 1, "aload %i", p -> reg_frame[v -> level]);
 			jvm_generate(p, 1, 1, "getfield %s$offset I", full_name);
 			break;
 		default:
@@ -203,6 +189,7 @@ jvm_create_function_var(gen_proc_t * p, enum gen_storage storage, char * name, g
 	v -> name = new_string(name);
 	v -> type = t;
 	v -> p = p;
+	v -> level = p -> level;
 
 	switch(storage)
 	{
@@ -250,6 +237,7 @@ jvm_create_function_temp_var(gen_proc_t * p, gen_type_t * t)
 	v -> name = new_string("$TEMP_%i$", v -> reg);
 	v -> type = t;
 	v -> p = p;
+	v -> level = p -> level;
 	return v;
 }
 
@@ -357,11 +345,11 @@ jvm_generate_var_initialization(gen_proc_t * p, gen_var_t * v)
 	}
 	else if(v -> storage == JVM_STORAGE_FRAME_PARAM_VARPTR)
 	{
-		jvm_generate_load(p, p -> frame_v);
+		jvm_generate(p, 0, 1, "aload %i", p -> reg_frame[v -> level]);
 		jvm_generate(p, 0, 1, "aload %i", v -> reg);
 		jvm_generate(p, 1, 0, "putfield %s [%s", v -> full_name, v -> type -> desc);
 
-		jvm_generate_load(p, p -> frame_v);
+		jvm_generate(p, 0, 1, "aload %i", p -> reg_frame[v -> level]);
 		jvm_generate(p, 0, 1, "iload %i", v -> reg + 1);
 		jvm_generate(p, 1, 0, "putfield %s$offset I", v -> full_name);
 	}
@@ -425,15 +413,18 @@ jvm_generate_frame_class(oberon_object_t * proc)
 			if(v -> storage == JVM_STORAGE_FRAME
 				|| v -> storage == JVM_STORAGE_FRAME_PARAM)
 			{
+				fprintf(fp, "; LEVEL %i\n", v -> level);
 				fprintf(fp, ".field public %s %s\n\n", v -> name, v -> type -> desc);
 			}
 			else if(v -> storage == JVM_STORAGE_FRAME_VAR
 				|| v -> storage == JVM_STORAGE_FRAME_PARAM_VAR)
 			{
+				fprintf(fp, "; LEVEL %i\n", v -> level);
 				fprintf(fp, ".field public %s [%s\n\n", v -> name, v -> type -> desc);
 			}
 			else if(v -> storage == JVM_STORAGE_FRAME_PARAM_VARPTR)
 			{
+				fprintf(fp, "; LEVEL %i\n", v -> level);
 				fprintf(fp, ".field public %s [%s\n", v -> name, v -> type -> desc);
 				fprintf(fp, ".field public %s$offset I\n\n", v -> name);
 			}
@@ -497,9 +488,9 @@ jvm_generate_procedure_frame(oberon_object_t * proc)
 	t -> desc = new_string("L%s;", class -> full_name);
 
 	v = jvm_create_function_var(p, JVM_STORAGE_REGISTER, "$FP$", t);
-
 	p -> frame_v = v;
-	p -> frame_t = t;
+	printf("jvm_generate_procedure_frame: %p level %i\n", p -> reg_frame, p -> level);
+	p -> reg_frame[p -> level] = v -> reg;
 }
 
 void
@@ -507,8 +498,180 @@ jvm_generate_frame_initialization(gen_proc_t * p)
 {
 	jvm_generate_var(p -> frame_v);
 	jvm_generate_ldst_prepare(p, p -> frame_v);
-	jvm_generate(p, 0, 1, "new %s", p -> frame_t -> class -> full_name);
+	jvm_generate(p, 0, 1, "new %s", p -> frame_v -> type -> class -> full_name);
 	jvm_generate(p, 1, 2, "dup");
-	jvm_generate(p, 1, 0, "invokespecial %s/<init>()V", p -> frame_t -> class -> full_name);
+	jvm_generate(p, 1, 0, "invokespecial %s/<init>()V", p -> frame_v -> type -> class -> full_name);
 	jvm_generate_store(p, p -> frame_v);
 }
+
+char *
+jvm_get_procedure_signature(oberon_type_t * ps)
+{
+	char * signature;
+	char * desc;
+	int num;
+	oberon_object_t * arg;
+
+	signature = new_string("(");
+
+	num = ps -> num_decl;
+	arg = ps -> decl;
+	for(int i = 0; i < num; i++)
+	{
+		desc = jvm_get_descriptor(arg -> type);
+		if(arg -> class == OBERON_CLASS_VAR_PARAM)
+		{
+			signature = new_string("%s[%sI", signature, desc);
+		}
+		else
+		{
+			signature = new_string("%s%s", signature, desc);
+		}
+		arg = arg -> next;
+	}
+
+	desc = jvm_get_descriptor(ps -> base);
+	signature = new_string("%s)%s", signature, desc);
+
+	return signature;
+}
+
+static char *
+jvm_get_frame_descriptor(oberon_object_t * proc)
+{
+	char * full_name = jvm_get_field_full_name_safe(proc);
+	return new_string("L%s$FRAME;", full_name);
+}
+
+static char *
+jvm_get_oberon_signature_static_links(oberon_object_t * parent)
+{
+	if(parent == NULL)
+	{
+		return "";
+	}
+
+	char * up = jvm_get_oberon_signature_static_links(parent -> parent);
+	char * desc = jvm_get_frame_descriptor(parent);
+	return new_string("%s%s", up, desc);
+}
+
+char *
+jvm_get_local_procedure_signature(oberon_object_t * proc)
+{
+	char * stlinks;
+	char * signature;
+	char * desc;
+	int num;
+	oberon_object_t * arg;
+	oberon_type_t * ps;
+
+	ps = proc -> type;
+
+	signature = new_string("(");
+
+	if(proc -> local)
+	{
+		stlinks = jvm_get_oberon_signature_static_links(proc -> parent);
+		signature = new_string("%s%s", signature, stlinks);
+	}
+
+	num = ps -> num_decl;
+	arg = ps -> decl;
+	for(int i = 0; i < num; i++)
+	{
+		desc = jvm_get_descriptor(arg -> type);
+		if(arg -> class == OBERON_CLASS_VAR_PARAM)
+		{
+			signature = new_string("%s[%sI", signature, desc);
+		}
+		else
+		{
+			signature = new_string("%s%s", signature, desc);
+		}
+		arg = arg -> next;
+	}
+
+	desc = jvm_get_descriptor(ps -> base);
+	signature = new_string("%s)%s", signature, desc);
+
+	return signature;
+}
+
+
+static void
+jvm_generate_staticlinks_recursive(gen_proc_t * p, oberon_object_t * parent, int level)
+{
+	if(parent == NULL)
+	{
+		return;
+	}
+
+	jvm_generate_staticlinks_recursive(p, parent -> parent, level - 1);
+	int reg = p -> reg_frame[level];
+	char * desc = jvm_get_frame_descriptor(parent);
+	jvm_generate(p, 0, 0, ".var %i is SL$%i %s from start to end", reg, level, desc);
+}
+
+void
+jvm_generate_staticlinks(oberon_object_t * proc)
+{
+	gen_proc_t * p;
+
+	p = proc -> gen_proc;
+
+	jvm_generate_staticlinks_recursive(p, proc -> parent, p -> level);
+}
+
+static void
+jvm_create_staticlinks_recursive(gen_proc_t * p, oberon_object_t * parent, int level)
+{
+	if(parent == NULL)
+	{
+		return;
+	}
+
+	jvm_create_staticlinks_recursive(p, parent -> parent, level - 1);
+	p -> reg_frame[level] = jvm_alloc_register_untyped(p -> rf, false);
+}
+
+void
+jvm_create_static_links(oberon_object_t * proc)
+{
+	gen_proc_t * p;
+	p = proc -> gen_proc;
+
+	int max_frames = 0;
+	oberon_object_t * prc = proc;
+	while(prc)
+	{
+		max_frames += 1;
+		prc = prc -> parent;
+	}
+
+	p -> max_frames = max_frames;
+	p -> reg_frame = GC_MALLOC(sizeof *p -> reg_frame);
+	memset(p -> reg_frame, 0, max_frames * sizeof *p -> reg_frame);	
+
+	p -> level = max_frames - 1;
+	jvm_create_staticlinks_recursive(p, proc -> parent, p -> level);
+}
+
+static void
+jvm_generate_push_static_links_recursive(gen_proc_t * p, oberon_object_t * parent)
+{
+	if(parent == NULL)
+	{
+		return;
+	}
+
+	jvm_generate_push_static_links_recursive(p, parent -> parent);
+	int level = parent -> gen_proc -> level;
+	jvm_generate(p, 0, 1, "aload %i", p -> reg_frame[level]);
+}
+
+void
+jvm_generate_push_static_links(gen_proc_t * p, oberon_object_t * proc)
+{
+	jvm_generate_push_static_links_recursive(p, proc -> parent);
+}