index fa34f1dfd8190149b12569aca64b7bc29b767d64..2889ae3c718437b3220ae308ba0e446a9fec55bc 100644 (file)
#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)
{
- char * desc;
- char * full_name;
+ char * desc = v -> type -> desc;
+ char * full_name = v -> full_name;
switch(v -> storage)
{
case JVM_STORAGE_REGISTER:
- break;
case JVM_STORAGE_STATIC:
- full_name = v -> full_name;
- desc = v -> type -> desc;
+ case JVM_STORAGE_FIELD:
+ case JVM_STORAGE_PARAM:
+ break;
+ case JVM_STORAGE_REGISTER_VAR:
+ case JVM_STORAGE_PARAM_VAR:
+ jvm_generate(p, 0, 1, "aload %i", v -> reg);
+ jvm_generate(p, 0, 1, "iconst_0");
+ break;
+ case JVM_STORAGE_STATIC_VAR:
jvm_generate(p, 0, 1, "getstatic %s [%s", full_name, desc);
jvm_generate(p, 0, 1, "iconst_0");
break;
- case JVM_STORAGE_FIELD:
- full_name = v -> full_name;
- desc = v -> type -> desc;
+ case JVM_STORAGE_FIELD_VAR:
jvm_generate(p, 1, 1, "getfield %s [%s", full_name, desc);
jvm_generate(p, 0, 1, "iconst_0");
break;
- case JVM_STORAGE_LOCAL:
+ case JVM_STORAGE_PARAM_VARPTR:
jvm_generate(p, 0, 1, "aload %i", v -> reg);
+ jvm_generate(p, 0, 1, "iload %i", v -> reg + 1);
+ break;
+ case JVM_STORAGE_FRAME:
+ case JVM_STORAGE_FRAME_PARAM:
+ 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(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_VARPTR:
- jvm_generate(p, 0, 1, "aload %i", v -> reg);
- jvm_generate(p, 0, 1, "iload %i", v -> reg + 1);
+ case JVM_STORAGE_FRAME_PARAM_VARPTR:
+ 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, "aload %i", p -> reg_frame[v -> level]);
+ jvm_generate(p, 1, 1, "getfield %s$offset I", full_name);
break;
default:
gen_error("jvm_abi_obn_generate_ldst_prepare: wat %i", v -> storage);
jvm_generate_load(gen_proc_t * p, gen_var_t * src)
{
char prefix = src -> type -> prefix;
+ char postfix = src -> type -> postfix;
int cell_size = src -> type -> cell_size;
+ char * full_name = src -> full_name;
+ char * desc = src -> type -> desc;
switch(src -> storage)
{
case JVM_STORAGE_REGISTER:
+ case JVM_STORAGE_PARAM:
jvm_generate(p, 0, cell_size, "%cload %i", prefix, src -> reg);
break;
case JVM_STORAGE_STATIC:
+ jvm_generate(p, 0, cell_size, "getstatic %s %s", full_name, desc);
+ break;
case JVM_STORAGE_FIELD:
- case JVM_STORAGE_LOCAL:
- case JVM_STORAGE_VARPTR:
+ jvm_generate(p, 0, cell_size, "getfield %s %s", full_name, desc);
+ break;
+ case JVM_STORAGE_REGISTER_VAR:
+ case JVM_STORAGE_STATIC_VAR:
+ case JVM_STORAGE_FIELD_VAR:
+ case JVM_STORAGE_PARAM_VAR:
+ case JVM_STORAGE_PARAM_VARPTR:
+ case JVM_STORAGE_FRAME_VAR:
+ case JVM_STORAGE_FRAME_PARAM_VAR:
+ case JVM_STORAGE_FRAME_PARAM_VARPTR:
jvm_generate_ldst_prepare(p, src);
- jvm_generate(p, 1 + 1, cell_size, "%caload", prefix);
+ jvm_generate(p, 1 + 1, cell_size, "%caload", postfix);
+ break;
+ case JVM_STORAGE_FRAME:
+ case JVM_STORAGE_FRAME_PARAM:
+ jvm_generate_ldst_prepare(p, src);
+ jvm_generate(p, 1, cell_size, "getfield %s %s", full_name, desc);
break;
default:
gen_error("jvm_generate_load: unknow storage type %i", src -> storage);
jvm_generate_store(gen_proc_t * p, gen_var_t * dst)
{
char prefix = dst -> type -> prefix;
+ char postfix = dst -> type -> postfix;
int cell_size = dst -> type -> cell_size;
+ char * full_name = dst -> full_name;
+ char * desc = dst -> type -> desc;
switch(dst -> storage)
{
case JVM_STORAGE_REGISTER:
+ case JVM_STORAGE_PARAM:
jvm_generate(p, cell_size, 0, "%cstore %i", prefix, dst -> reg);
break;
case JVM_STORAGE_STATIC:
+ jvm_generate(p, 0, cell_size, "putstatic %s %s", full_name, desc);
+ break;
case JVM_STORAGE_FIELD:
- case JVM_STORAGE_LOCAL:
- case JVM_STORAGE_VARPTR:
- jvm_generate(p, 1 + 1 + cell_size, 0, "%castore", prefix);
+ jvm_generate(p, 0, cell_size, "putfield %s %s", full_name, desc);
+ break;
+ case JVM_STORAGE_REGISTER_VAR:
+ case JVM_STORAGE_STATIC_VAR:
+ case JVM_STORAGE_FIELD_VAR:
+ case JVM_STORAGE_PARAM_VAR:
+ case JVM_STORAGE_PARAM_VARPTR:
+ case JVM_STORAGE_FRAME_VAR:
+ case JVM_STORAGE_FRAME_PARAM_VAR:
+ case JVM_STORAGE_FRAME_PARAM_VARPTR:
+ jvm_generate(p, 1 + 1 + cell_size, 0, "%castore", postfix);
+ break;
+ case JVM_STORAGE_FRAME:
+ case JVM_STORAGE_FRAME_PARAM:
+ jvm_generate(p, 0, cell_size, "putfield %s %s", full_name, desc);
break;
default:
gen_error("jvm_generate_store: unknow storage type %i", dst -> storage);
}
}
-void
-jvm_generate_and_init_global_var(struct gen_class * class, gen_var_t * v, char * name, gen_type_t * t)
+static gen_var_t *
+jvm_new_var()
{
- assert(class -> p == NULL);
- fprintf(class -> fp, ".field public static %s [%s\n\n", name, t -> desc);
-
- v -> storage = JVM_STORAGE_STATIC;
- v -> full_name = new_string("%s/%s", class -> full_name, name);
- v -> type = t;
+ gen_var_t * v = GC_MALLOC(sizeof *v);
+ memset(v, 0, sizeof *v);
+ return v;
}
-void
-jvm_generate_and_init_field(struct gen_class * class, gen_var_t * v, char * name, gen_type_t * t)
+gen_var_t *
+jvm_create_class_var(struct gen_class * class, enum gen_storage storage, char * name, gen_type_t * t)
{
+ gen_var_t * v = jvm_new_var();
+ v -> storage = storage;
+ v -> name = new_string(name);
+ v -> type = t;
+ v -> class = class;
+
assert(class -> p == NULL);
- fprintf(class -> fp, ".field public %s [%s\n\n", name, t -> desc);
+ switch(storage)
+ {
+ case JVM_STORAGE_STATIC:
+ case JVM_STORAGE_FIELD:
+ case JVM_STORAGE_STATIC_VAR:
+ case JVM_STORAGE_FIELD_VAR:
+ v -> full_name = new_string("%s/%s", class -> full_name, name);
+ break;
+ default:
+ gen_error("jvm_create_class_var: invalid storage %i", storage);
+ break;
+ }
- v -> storage = JVM_STORAGE_FIELD;
- v -> full_name = new_string("%s/%s", class -> full_name, name);
- v -> type = t;
+ return v;
}
-void
-jvm_generate_and_init_local_var(gen_proc_t * p, gen_var_t * v, gen_type_t * t)
+gen_var_t *
+jvm_create_function_var(gen_proc_t * p, enum gen_storage storage, char * name, gen_type_t * t)
{
- v -> storage = JVM_STORAGE_REGISTER;
- v -> reg = jvm_alloc_register_untyped(p -> rf, t -> wide);
+ gen_var_t * v = jvm_new_var();
+ v -> storage = storage;
+ v -> name = new_string(name);
v -> type = t;
+ v -> p = p;
+ v -> level = p -> level;
+
+ switch(storage)
+ {
+ case JVM_STORAGE_REGISTER:
+ case JVM_STORAGE_PARAM:
+ case JVM_STORAGE_PARAM_VAR:
+ v -> reg = jvm_alloc_register_untyped(p -> rf, t -> wide);
+ break;
+ case JVM_STORAGE_PARAM_VARPTR:
+ /* Содержит пару массив+индекс */
+ v -> reg = jvm_alloc_register_untyped(p -> rf, true);
+ break;
+ case JVM_STORAGE_REGISTER_VAR:
+ /* Содержит массив */
+ v -> reg = jvm_alloc_register_untyped(p -> rf, false);
+ break;
+ case JVM_STORAGE_FRAME:
+ case JVM_STORAGE_FRAME_VAR:
+ v -> full_name = new_string("%s$FRAME/%s", p -> full_name, name);
+ break;
+ case JVM_STORAGE_FRAME_PARAM:
+ case JVM_STORAGE_FRAME_PARAM_VAR:
+ v -> reg = jvm_alloc_register_untyped(p -> rf, t -> wide);
+ v -> full_name = new_string("%s$FRAME/%s", p -> full_name, name);
+ break;
+ case JVM_STORAGE_FRAME_PARAM_VARPTR:
+ /* Содержит пару массив+индекс */
+ v -> reg = jvm_alloc_register_untyped(p -> rf, true);
+ v -> full_name = new_string("%s$FRAME/%s", p -> full_name, name);
+ break;
+ default:
+ gen_error("jvm_create_class_var: invalid storage %i", storage);
+ break;
+ }
+
+ return v;
}
-void
-jvm_init_named_local_var(gen_proc_t * p, gen_var_t * v, gen_type_t * t)
+gen_var_t *
+jvm_create_function_temp_var(gen_proc_t * p, gen_type_t * t)
{
+ gen_var_t * v = jvm_new_var();
v -> storage = JVM_STORAGE_REGISTER;
v -> reg = jvm_alloc_register_untyped(p -> rf, t -> wide);
+ v -> name = new_string("$TEMP_%i$", v -> reg);
v -> type = t;
+ v -> p = p;
+ v -> level = p -> level;
+ return v;
}
void
-jvm_init_param(gen_proc_t * p, gen_var_t * v, gen_type_t * t)
+jvm_generate_var(gen_var_t * v)
{
- v -> storage = JVM_STORAGE_LOCAL;
- v -> reg = jvm_alloc_register_untyped(p -> rf, t -> wide);
- v -> type = t;
+ enum gen_storage storage = v -> storage;
+ int reg = v -> reg;
+ char * name = v -> name;
+ char * desc = v -> type -> desc;
+ gen_proc_t * p = v -> p;
+
+ switch(v -> storage)
+ {
+ case JVM_STORAGE_REGISTER:
+ case JVM_STORAGE_PARAM:
+ case JVM_STORAGE_PARAM_VAR:
+ case JVM_STORAGE_FRAME:
+ case JVM_STORAGE_FRAME_VAR:
+ case JVM_STORAGE_FRAME_PARAM:
+ case JVM_STORAGE_FRAME_PARAM_VAR:
+ jvm_generate(p, 0, 0, ".var %i is '%s' %s from start to end", reg, name, desc);
+ break;
+ case JVM_STORAGE_REGISTER_VAR:
+ jvm_generate(p, 0, 0, ".var %i is '%s' [%s from start to end", reg, name, desc);
+ break;
+ case JVM_STORAGE_PARAM_VARPTR:
+ case JVM_STORAGE_FRAME_PARAM_VARPTR:
+ jvm_generate(p, 0, 0, ".var %i is '%s' [%s from start to end", reg, name, desc);
+ jvm_generate(p, 0, 0, ".var %i is '%s$offset' I from start to end", reg + 1, name);
+ break;
+ case JVM_STORAGE_STATIC:
+ fprintf(v -> class -> fp, ".field public static '%s' %s\n\n", name, desc);
+ break;
+ case JVM_STORAGE_STATIC_VAR:
+ fprintf(v -> class -> fp, ".field public static '%s' [%s\n\n", name, desc);
+ break;
+ case JVM_STORAGE_FIELD:
+ fprintf(v -> class -> fp, ".field public '%s' %s\n\n", name, desc);
+ break;
+ case JVM_STORAGE_FIELD_VAR:
+ fprintf(v -> class -> fp, ".field public '%s' [%s\n\n", name, desc);
+ break;
+ default:
+ gen_error("jvm_generate_var: invalid storage %i", storage);
+ break;
+ }
}
-void
-jvm_init_var_param(gen_proc_t * p, gen_var_t * v, gen_type_t * t)
+static void
+jvm_generate_param_initialization(gen_proc_t * p, gen_var_t * v)
{
- v -> storage = JVM_STORAGE_VARPTR;
- v -> reg = jvm_alloc_register_untyped(p -> rf, true);
- v -> type = t;
+ int old_reg = v -> reg;
+ int cell_size = v -> type -> cell_size;
+ char prefix = v -> type -> prefix;
+ char postfix = v -> type -> postfix;
+ char * name = v -> name;
+ char * desc = v -> type -> desc;
+
+ v -> reg = jvm_alloc_register_untyped(p -> rf, false);
+ jvm_generate(p, 0, 0, ".var %i is $%s [%s from start to end", v -> reg, name, desc);
+
+ jvm_generate(p, 0, 1, "iconst_1");
+ jvm_generate(p, 1, 1, "multianewarray [%s 1", desc);
+ jvm_generate(p, 1, 2, "dup");
+ jvm_generate(p, 1, 0, "astore %i", v -> reg);
+
+ jvm_generate(p, 0, 1, "iconst_0");
+ jvm_generate(p, 0, cell_size, "%cload %i", prefix, old_reg);
+ jvm_generate(p, 1 + 1 + cell_size, 0, "%castore", postfix);
}
void
-jvm_generate_variable_initialization(gen_proc_t * p, gen_var_t * v)
+jvm_generate_var_initialization(gen_proc_t * p, gen_var_t * v)
{
- if(v -> storage == JVM_STORAGE_STATIC)
+ if(v -> storage == JVM_STORAGE_REGISTER_VAR)
+ {
+ jvm_generate(p, 0, 1, "iconst_1");
+ jvm_generate(p, 1, 1, "multianewarray [%s 1", v -> type -> desc);
+ jvm_generate(p, 1, 0, "astore %i", v -> reg);
+ }
+ else if(v -> storage == JVM_STORAGE_STATIC_VAR)
{
jvm_generate(p, 0, 1, "iconst_1");
jvm_generate(p, 1, 1, "multianewarray [%s 1", v -> type -> desc);
jvm_generate(p, 1, 0, "putstatic %s [%s", v -> full_name, v -> type -> desc);
}
- else if(v -> storage == JVM_STORAGE_FIELD)
+ else if(v -> storage == JVM_STORAGE_FIELD_VAR)
{
jvm_generate(p, 0, 1, "iconst_1");
jvm_generate(p, 1, 1, "multianewarray [%s 1", v -> type -> desc);
jvm_generate(p, 1, 0, "putfield %s [%s", v -> full_name, v -> type -> desc);
}
+ else if(v -> storage == JVM_STORAGE_PARAM_VAR)
+ {
+ jvm_generate_param_initialization(p, v);
+ }
+ else if(v -> storage == JVM_STORAGE_FRAME_PARAM
+ || v -> storage == JVM_STORAGE_FRAME_PARAM_VAR)
+ {
+ jvm_generate_ldst_prepare(p, v);
+ jvm_generate(p, 0, v -> type -> cell_size, "%cload %i", v -> type -> prefix, v -> reg);
+ jvm_generate_store(p, v);
+ }
+ else if(v -> storage == JVM_STORAGE_FRAME_PARAM_VARPTR)
+ {
+ 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(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);
+ }
}
-void
-jvm_generate_named_local_var_initialization(gen_proc_t * p, gen_var_t * v, char * name)
+/*
+static void
+jvm_generate_abstract_frame_class()
{
- jvm_generate(p, 0, 0, ".var %i is %s %s from start to end", v -> reg, name, v -> type -> desc);
+ FILE * fp;
+ char * cname;
+ struct gen_class * class;
+
+ cname = "SYSTEM$FRAME";
+ class = jvm_create_class(cname);
+ fp = class -> fp;
+
+ fprintf(fp, ".source SYSTEM\n");
+ fprintf(fp, ".class public abstract %s\n", cname);
+ fprintf(fp, ".super java/lang/Object\n\n");
+
+ fprintf(fp, ".field public $UP L%s;\n\n", cname);
+
+ fprintf(fp, ".method <init>()V\n");
+ fprintf(fp, " aload_0\n");
+ fprintf(fp, " invokespecial java/lang/Object/<init>()V\n");
+ fprintf(fp, " return\n");
+ fprintf(fp, ".end method\n\n");
+
+ jvm_destroy_class(class);
+}
+*/
+
+static struct gen_class *
+jvm_generate_frame_class(oberon_object_t * proc)
+{
+ FILE * fp;
+ char * cname;
+ char * abscname;
+ struct gen_class * class;
+ oberon_object_t * var;
+
+ abscname = "SYSTEM$FRAME";
+ cname = jvm_get_field_full_name_safe(proc);
+ cname = new_string("%s$FRAME", cname);
+ class = jvm_create_class(proc -> gen_proc -> class -> dir, cname);
+ fp = class -> fp;
+
+ class -> full_name = cname;
+
+ fprintf(fp, ".source %s\n", proc -> module -> name);
+ fprintf(fp, ".class public %s\n", cname);
+ fprintf(fp, ".super %s\n\n", abscname);
+
+ var = proc -> scope -> list -> next;
+ while(var)
+ {
+ if(var -> class == OBERON_CLASS_VAR
+ || var -> class == OBERON_CLASS_PARAM
+ || var -> class == OBERON_CLASS_VAR_PARAM)
+ {
+ gen_var_t * v = var -> gen_var;
+ if(v -> storage == JVM_STORAGE_FRAME
+ || v -> storage == JVM_STORAGE_FRAME_PARAM)
+ {
+ fprintf(fp, "; LEVEL %i\n", v -> level);
+ fprintf(fp, ".field public '%s' %s\n\n", v -> name, v -> type -> desc);
+ }
+ else if(v -> storage == JVM_STORAGE_FRAME_VAR
+ || v -> storage == JVM_STORAGE_FRAME_PARAM_VAR)
+ {
+ fprintf(fp, "; LEVEL %i\n", v -> level);
+ fprintf(fp, ".field public '%s' [%s\n\n", v -> name, v -> type -> desc);
+ }
+ else if(v -> storage == JVM_STORAGE_FRAME_PARAM_VARPTR)
+ {
+ fprintf(fp, "; LEVEL %i\n", v -> level);
+ fprintf(fp, ".field public '%s' [%s\n", v -> name, v -> type -> desc);
+ fprintf(fp, ".field public '%s$offset' I\n\n", v -> name);
+ }
+ }
+ var = var -> next;
+ }
+
+ fprintf(fp, ".method <init>()V\n");
+ fprintf(fp, " .limit stack 2\n");
+ fprintf(fp, " aload_0\n");
+ fprintf(fp, " invokespecial %s/<init>()V\n", abscname);
+
+ var = proc -> scope -> list -> next;
+ while(var)
+ {
+ if(var -> class == OBERON_CLASS_VAR
+ || var -> class == OBERON_CLASS_PARAM
+ || var -> class == OBERON_CLASS_VAR_PARAM)
+ {
+ gen_var_t * v = var -> gen_var;
+ if(v -> storage == JVM_STORAGE_FRAME_VAR
+ || v -> storage == JVM_STORAGE_FRAME_PARAM_VAR)
+ {
+ fprintf(fp, " aload_0\n");
+ fprintf(fp, " iconst_1\n");
+ fprintf(fp, " multianewarray [%s 1\n", v -> type -> desc);
+ fprintf(fp, " putfield %s [%s\n", v -> full_name, v -> type -> desc);
+ }
+ }
+ var = var -> next;
+ }
+
+ fprintf(fp, " return\n");
+ fprintf(fp, ".end method\n\n");
+
+ jvm_destroy_class(class);
+
+ return class;
}
void
-jvm_generate_param_initialization(gen_proc_t * p, gen_var_t * v, char * name)
+jvm_generate_procedure_frame(oberon_object_t * proc)
{
- int old_reg = v -> reg;
- bool wide = v -> type -> wide;
- int cell_size = v -> type -> cell_size;
- char prefix = v -> type -> prefix;
- char * desc = v -> type -> desc;
+ gen_proc_t * p;
+ gen_type_t * t;
+ gen_var_t * v;
+ struct gen_class * class;
- jvm_generate(p, 0, 0, ".var %i is %s %s from start to end", old_reg, name, desc);
- v -> reg = jvm_alloc_register_untyped(p -> rf, wide);
+ p = proc -> gen_proc;
- jvm_generate(p, 0, 1, "iconst_1");
- jvm_generate(p, 1, 1, "multianewarray [%s 1", desc);
+// jvm_generate_abstract_frame_class();
+
+ class = jvm_generate_frame_class(proc);
+
+ t = GC_MALLOC(sizeof *t);
+ memset(t, 0, sizeof *t);
+ t -> class = class;
+ t -> wide = false;
+ t -> prefix = 'a';
+ t -> postfix = 'a';
+ t -> cell_size = 1;
+ 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 -> reg_frame[p -> level] = v -> reg;
+}
+
+void
+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_v -> type -> class -> full_name);
jvm_generate(p, 1, 2, "dup");
- jvm_generate(p, 1, 0, "astore %i", v -> reg);
+ jvm_generate(p, 1, 0, "invokespecial %s/<init>()V", p -> frame_v -> type -> class -> full_name);
+ jvm_generate_store(p, p -> frame_v);
+}
- jvm_generate(p, 0, 1, "iconst_0");
- jvm_generate(p, 0, cell_size, "%cload %i", prefix, old_reg);
- jvm_generate(p, 1 + 1 + cell_size, 0, "%castore", prefix);
+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;
+ }
+
+ size_t sz = sizeof(*p -> reg_frame) * max_frames;
+ p -> max_frames = max_frames;
+ p -> reg_frame = GC_MALLOC(sz);
+ memset(p -> reg_frame, 0, sz);
+
+ 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_var_param_initialization(gen_proc_t * p, gen_var_t * v, char * name)
+jvm_generate_push_static_links(gen_proc_t * p, oberon_object_t * proc)
{
- jvm_generate(p, 0, 0, ".var %i is %s [%s from start to end", v -> reg, name, v -> type -> desc);
- jvm_generate(p, 0, 0, ".var %i is __%s_offset I from start to end", v -> reg + 1, name);
+ jvm_generate_push_static_links_recursive(p, proc -> parent);
}