index 895a5ae3e524c2ef30063d1de38a316b2e3d23b1..581faf92c302bab84ce601e5087eeb39e480d4ef 100644 (file)
va_end(ptr);
}
+static void
+jvm_generate_comment(gen_proc_t * p, char * format, ...)
+{
+ va_list ptr;
+ va_start(ptr, format);
+
+ fprintf(p -> class -> fp, " ;;;; ");
+ vfprintf(p -> class -> fp, format, ptr);
+ fprintf(p -> class -> fp, "\n");
+
+ va_end(ptr);
+}
+
static void
jvm_generate_push_int(gen_proc_t * p, int64_t i)
{
}
}
+static void
+jvm_generate_push_int_size(gen_proc_t * p, int64_t i, int size)
+{
+ int pushed_cell = 1;
+
+ if(i == -1)
+ {
+ jvm_generate(p, 0, 1, "iconst_m1");
+ }
+ else if(i >= 0 && i <= 5)
+ {
+ jvm_generate(p, 0, 1, "iconst_%li", i);
+ }
+ else if(i >= -128 && i <= 127)
+ {
+ jvm_generate(p, 0, 1, "bipush %li", i);
+ }
+ else if(i >= -32768 && i <= 32767)
+ {
+ jvm_generate(p, 0, 1, "sipush %li", i);
+ }
+ else if(i >= -2147483648 && i <= 2147483647)
+ {
+ jvm_generate(p, 0, 1, "ldc %li", i);
+ }
+ else
+ {
+ pushed_cell = 2;
+ jvm_generate(p, 0, 2, "ldc2 %li", i);
+ }
+
+ assert(size <= 8);
+ if(size > 4 && pushed_cell == 1)
+ {
+ jvm_generate(p, pushed_cell, 2, "i2l");
+ }
+ else if(size <= 4)
+ {
+ if(pushed_cell > 1)
+ {
+ jvm_generate(p, 2, 1, "l2i");
+ }
+
+ if(size == 2)
+ {
+ jvm_generate(p, 1, 1, "i2s");
+ }
+ else if(size == 1)
+ {
+ jvm_generate(p, 1, 1, "i2b");
+ }
+ }
+}
+
static void
jvm_generate_push_float(gen_proc_t * p, double f, int size)
{
jvm_generate_and_init_local_var(dst, p, false);
jvm_generate_store(p, arr, dst);
- /* Входящие параметры заграблены.
+ /*
+ * Входящие параметры заграблены.
* Теперь генерируем эквивалентный код:
* int i = 0;
* int len = dst.length
jvm_generate_store(p, arr, src);
jvm_generate_store(p, arr, dst);
- /* Входящие параметры заграблены.
+ /*
+ * Входящие параметры заграблены.
* Теперь генерируем эквивалентный код:
* int i = 0;
* int len = dst.length
jvm_generate(p, 2, 0, "if_icmpge L%i", loop[i].end);
}
- if(base -> class == OBERON_TYPE_ARRAY)
- {
- // Вся эта шляпа уже должна знать о всех размерностях
- gen_error("jvm_generate_copy_array: wat");
- }
- else if(base -> class == OBERON_TYPE_RECORD)
+ if(base -> class == OBERON_TYPE_RECORD)
{
/* Получаем записи по индексам ( -- dst src ) */
}
}
+static void
+jvm_generate_push_procedure_pointer(gen_proc_t * p, oberon_object_t * proc)
+{
+ char * full_name = jvm_get_field_full_name_safe(proc);
+ char * desc = jvm_get_descriptor(proc -> type);
+ jvm_generate(p, 0, 1, "getstatic %s/pointer %s", full_name, desc);
+}
+
// ==========================================
// ==========================================
// ==========================================
fprintf(fp, ".class public abstract %s\n", cname);
fprintf(fp, ".super java/lang/Object\n\n");
- fprintf(fp, ".method public <init>()V\n");
+ fprintf(fp, ".method <init>()V\n");
fprintf(fp, " aload_0\n");
fprintf(fp, " invokespecial java/lang/Object/<init>()V\n");
fprintf(fp, " return\n");
jvm_destroy_class(class);
}
+static void
+oberon_generate_procedure_pointer_class(oberon_object_t * proc)
+{
+ FILE * fp;
+ char * cname;
+ char * abscname;
+ char * absdesc;
+ char * signature;
+ struct gen_class * class;
+
+ cname = jvm_get_field_full_name_safe(proc);
+ class = jvm_create_class(cname);
+ abscname = jvm_get_class_full_name(proc -> type);
+ absdesc = jvm_get_descriptor(proc -> type);
+ fp = class -> fp;
+
+ fprintf(fp, ".source %s\n", proc -> module -> name);
+ fprintf(fp, ".class public %s\n", cname);
+ fprintf(fp, ".super %s\n\n", abscname);
+
+ fprintf(fp, ".field public static pointer %s\n\n", absdesc);
+
+ fprintf(fp, ".method <init>()V\n");
+ fprintf(fp, " aload_0\n");
+ fprintf(fp, " invokespecial %s/<init>()V\n", abscname);
+ fprintf(fp, " aload_0\n");
+ fprintf(fp, " putstatic %s/pointer %s\n", cname, absdesc);
+ fprintf(fp, " return\n");
+ fprintf(fp, ".end method\n\n");
+
+ signature = jvm_get_procedure_signature(proc -> type);
+
+ gen_proc_t * p;
+ gen_var_t * this_v;
+
+ p = jvm_create_proc(class);
+ jvm_generate_function_header(p, "public", "invoke", signature);
+
+ this_v = oberon_generator_new_var();
+ jvm_generate_and_init_local_var(this_v, p, false);
+
+ gen_var_t * v;
+ int use_size = 0;
+ int num = proc -> type -> num_decl;
+ oberon_object_t * arg = proc -> type -> decl;
+ for(int i = 0; i < num; i++)
+ {
+ v = oberon_generator_new_var();
+ bool wide = jvm_is_wide_type(arg -> type);
+ char * desc = jvm_get_descriptor(arg -> type);
+ jvm_generate_and_init_named_local_var(v, p, wide, arg -> name, desc);
+
+ jvm_generate_load(p, arg -> type, v);
+
+ use_size += (wide) ? (2) : (1);
+
+ arg = arg -> 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)
+ {
+ jvm_generate(p, 0, 0, "return");
+ }
+ else
+ {
+ char prefix = jvm_get_prefix(proc -> type -> base);
+ jvm_generate(p, cell_size, 0, "%creturn", prefix);
+ }
+
+ jvm_generate_function_end(p);
+
+ jvm_destroy_class(class);
+}
+
static void
oberon_generate_record_class(gen_module_t * m, oberon_type_t * rec)
{
/* смотри oberon_generator_init_record() */
break;
case OBERON_CLASS_VAR:
- /* Локальные заполняются при генерации функции */
+ /* Локальные заполняются при генерации функции */
/* смотри jvm_init_local_object() */
if(var -> local == 0)
{
{
gen_error("generator: local procedures not implemented");
}
+
+ oberon_generate_procedure_pointer_class(proc);
}
void
jvm_generate_store(p, x -> type, x -> gen_var);
}
}
+ else if(x -> class == OBERON_CLASS_PROC)
+ {
+ char * cname = jvm_get_field_full_name_safe(x);
+ jvm_generate(p, 0, 1, "new %s", cname);
+ jvm_generate(p, 1, 0, "invokespecial %s/<init>()V", cname);
+ }
+
x = x -> next;
}
}
}
}
+/*
+ * Генерирует код для получения размера измерения массива
+ * Аналог Обероновского LEN(v, n); где n = 0 - первое измерение.
+ * ( aref -- int )
+ */
+
+static void
+jvm_generate_array_len(gen_proc_t * p, int dim)
+{
+ while(dim > 0)
+ {
+ jvm_generate(p, 0, 1, "iconst_0");
+ jvm_generate(p, 2, 1, "aaload");
+ dim -= 1;
+ }
+ jvm_generate(p, 1, 1, "arraylength");
+}
+
+static void
+jvm_generate_array_duplicate_and_replace(gen_proc_t * p, gen_var_t * v, oberon_type_t * arr)
+{
+ int dim = 0;
+ oberon_type_t * base = arr;
+ while(base -> class == OBERON_TYPE_ARRAY)
+ {
+ if(base -> size == 0)
+ {
+ jvm_generate_load(p, arr, v);
+ jvm_generate_array_len(p, dim);
+ dim += 1;
+ }
+ base = base -> base;
+ }
+
+ jvm_generate_new(p, arr, dim);
+ jvm_generate(p, 1, 2, "dup");
+ jvm_generate_load(p, arr, v);
+ jvm_generate_copy_array(p, arr);
+ jvm_generate_store(p, arr, v);
+}
+
+static void
+jvm_generate_record_duplicate_and_replace(gen_proc_t * p, gen_var_t * v, oberon_type_t * rec)
+{
+ jvm_generate_new(p, rec, 0);
+ jvm_generate(p, 1, 2, "dup");
+ jvm_generate_load(p, rec, v);
+ jvm_generate_copy_record(p, rec);
+ jvm_generate_store(p, rec, v);
+}
+
void
oberon_generate_begin_proc(oberon_context_t * ctx, oberon_object_t * proc)
{
p = proc -> gen_proc;
signature = jvm_get_procedure_signature(proc -> type);
-
jvm_generate_function_header(p, "public static", proc -> name, signature);
+ /* Выделение регистров под параметры и переменные */
oberon_object_t * var = proc -> type -> decl;
while(var)
{
jvm_init_local_object(p, var);
var = var -> next;
}
+
+ /* Копирование статических/открытых массивов и записей */
+ var = proc -> type -> decl;
+ 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);
+ }
+ }
+ var = var -> next;
+ }
}
void
fullname = jvm_get_field_full_name(proc);
signature = jvm_get_procedure_signature(proc -> type);
+ if(proc -> class != OBERON_CLASS_PROC)
+ {
+ /* Загружаем указатель на процедуру */
+ jvm_generate_load(p, proc -> type, proc -> gen_var);
+ }
+
int args_cells = 0;
int result_cells = jvm_cell_size_for_type(proc -> type -> base);
arg = arg -> next;
}
- jvm_generate(p, args_cells, result_cells, "invokestatic %s%s", fullname, signature);
+ if(proc -> class == OBERON_CLASS_PROC)
+ {
+ /* Обычная статическая процедура */
+ jvm_generate(p, args_cells, result_cells, "invokestatic %s%s", fullname, signature);
+ }
+ else
+ {
+ /* Процедура-переменная */
+ char * class = jvm_get_class_full_name(proc -> type);
+ jvm_generate(p, 1 + args_cells, result_cells, "invokevirtual %s/invoke%s", class, signature);
+ }
}
void
oberon_generate_call_proc(oberon_context_t * ctx, oberon_expr_t * desig)
{
- jvm_generate_call_proc(ctx -> gen_context -> current_m -> class -> p, desig);
+ jvm_generate_call_proc(ctx -> mod -> gen_mod -> class -> p, desig);
}
void
@@ -1051,19 +1296,44 @@ 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_type(gen_proc_t * p, oberon_type_t * from, oberon_type_t * to)
+{
+ 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);
+}
+
static void
push_item(gen_proc_t * p, oberon_item_t * item)
{
switch(item -> mode)
{
case MODE_VAR:
- jvm_generate_load(p, item -> result, item -> var -> gen_var);
+ if(item -> var -> class == OBERON_CLASS_PROC)
+ {
+ jvm_generate_push_procedure_pointer(p, item -> var);
+ }
+ else
+ {
+ jvm_generate_load(p, item -> result, item -> var -> gen_var);
+ }
break;
case MODE_INTEGER:
- jvm_generate_push_int(p, item -> integer);
+ jvm_generate_push_int_size(p, item -> integer, item -> result -> size);
break;
case MODE_BOOLEAN:
- jvm_generate_push_int(p, item -> boolean);
+ jvm_generate_push_int_size(p, item -> boolean, item -> result -> size);
break;
case MODE_CALL:
jvm_generate_call_proc(p, (oberon_expr_t *) item);
;
char postfix = jvm_get_postfix(item -> result);
int cell_size = jvm_cell_size_for_postfix(postfix);
- push_item(p, item -> parent);
+ assert(item -> parent -> is_item);
+ push_item(p, (oberon_item_t *) item -> parent);
push_expr(p, item -> args);
jvm_generate(p, 1 + 1, cell_size, "%caload", postfix);
break;
case MODE_FIELD:
- push_item(p, item -> parent);
+ assert(item -> parent -> is_item);
+ push_item(p, (oberon_item_t *) item -> parent);
jvm_generate_load(p, item -> result, item -> var -> gen_var);
break;
case MODE_DEREF:
/* Все объекты в jvm представляются как указатели */
- push_item(p, item -> parent);
+ assert(item -> parent -> is_item);
+ push_item(p, (oberon_item_t *) item -> parent);
break;
case MODE_NIL:
jvm_generate(p, 0, 1, "aconst_null");
case MODE_REAL:
jvm_generate_push_float(p, item -> real, item -> result -> size);
break;
+ case MODE_CAST:
+ push_expr(p, item -> parent);
+ jvm_generate_cast_type(p, item -> parent -> result, item -> result);
+ break;
default:
gen_error("push_item: unk mode %i", item -> mode);
break;
;
char postfix = jvm_get_postfix(src -> result);
int cell_size = jvm_cell_size_for_postfix(postfix);
- push_item(p, item -> parent);
+ assert(item -> parent -> is_item);
+ push_item(p, (oberon_item_t *) item -> parent);
push_expr(p, item -> args);
push_expr(p, src);
jvm_generate(p, 1 + 1 + cell_size, 0, "%castore", postfix);
break;
case MODE_FIELD:
- push_item(p, item -> parent);
+ assert(item -> parent -> is_item);
+ push_item(p, (oberon_item_t *) item -> parent);
push_expr(p, src);
jvm_generate_store(p, src -> result, item -> var -> gen_var);
break;