895a5ae3e524c2ef30063d1de38a316b2e3d23b1
11 #include "../../../include/oberon.h"
12 #include "../../oberon-internals.h"
13 #include "generator-jvm.h"
14 #include "generator-jvm-basic.h"
16 // ==========================================
17 // ==========================================
18 // ==========================================
21 jvm_create_proc(struct gen_class
* class)
23 gen_proc_t
* p
= GC_MALLOC(sizeof *p
);
24 memset(p
, 0, sizeof *p
);
26 struct gen_register_file
* rf
= GC_MALLOC(sizeof *rf
);
27 memset(rf
, 0, sizeof *rf
);
29 struct gen_stack
* stack
= GC_MALLOC(sizeof *stack
);
30 memset(rf
, 0, sizeof *stack
);
41 jvm_generate_function_header(gen_proc_t
* p
, char * access
, char * name
, char * signature
)
43 struct gen_class
* class;
46 /* Делаем процедуру текущей в этом классе */
47 assert(class -> p
== NULL
);
50 fprintf(class -> fp
, ".method %s %s%s\n", access
, name
, signature
);
51 fprintf(class -> fp
, " start:\n");
55 jvm_generate_function_end(gen_proc_t
* p
)
57 struct gen_class
* class;
63 int pointer
= p
-> stack
-> pointer
;
64 int max_pointer
= p
-> stack
-> max_pointer
;
65 int locals
= p
-> rf
-> num_used
;
66 int max_locals
= p
-> rf
-> max_used
;
68 fprintf(class -> fp
, " .limit stack %i \t; current(%i)\n", max_pointer
, pointer
);
69 fprintf(class -> fp
, " .limit locals %i \t; current(%i)\n", max_locals
, locals
);
70 fprintf(class -> fp
, " end:\n");
71 fprintf(class -> fp
, ".end method\n\n");
75 jvm_create_class(char * full_name
)
77 struct gen_class
* class = GC_MALLOC(sizeof *class);
78 memset(class, 0, sizeof *class);
80 char * fname
= new_string("%s.j", full_name
);
81 class -> full_name
= new_string(full_name
);
82 class -> fp
= fopen(fname
, "w");
89 jvm_destroy_class(struct gen_class
* class)
91 assert(class -> p
== NULL
);
96 jvm_stack_push(gen_proc_t
* p
, unsigned size
)
98 p
-> stack
-> pointer
+= size
;
99 if(p
-> stack
-> pointer
> p
-> stack
-> max_pointer
)
101 p
-> stack
-> max_pointer
= p
-> stack
-> pointer
;
106 jvm_stack_pop(gen_proc_t
* p
, unsigned size
)
108 p
-> stack
-> pointer
-= size
;
110 if(p
-> stack
-> pointer
< 0)
112 printf("WARING: stack pointer %i\n", p
-> stack
-> pointer
);
117 jvm_generate(gen_proc_t
* p
, unsigned get
, unsigned push
, char * format
, ...)
120 va_start(ptr
, format
);
122 jvm_stack_pop(p
, get
);
123 fprintf(p
-> class -> fp
, " ");
124 vfprintf(p
-> class -> fp
, format
, ptr
);
125 jvm_stack_push(p
, push
);
126 fprintf(p
-> class -> fp
, " \t ;>>>> %i -- %i : current_stack(%i)\n", get
, push
, p
-> stack
-> pointer
);
132 jvm_generate_push_int(gen_proc_t
* p
, int64_t i
)
136 jvm_generate(p
, 0, 1, "iconst_m1");
138 else if(i
>= 0 && i
<= 5)
140 jvm_generate(p
, 0, 1, "iconst_%li", i
);
142 else if(i
>= -128 && i
<= 127)
144 jvm_generate(p
, 0, 1, "bipush %li", i
);
146 else if(i
>= -32768 && i
<= 32767)
148 jvm_generate(p
, 0, 1, "sipush %li", i
);
150 else if(i
>= -2147483648 && i
<= 2147483647)
152 jvm_generate(p
, 0, 1, "ldc %li", i
);
156 jvm_generate(p
, 0, 2, "ldc2 %li", i
);
161 jvm_generate_push_float(gen_proc_t
* p
, double f
, int size
)
167 jvm_generate(p
, 0, 1, "fconst_0");
171 jvm_generate(p
, 0, 1, "fconst_1");
175 jvm_generate(p
, 0, 1, "fconst_2");
179 jvm_generate(p
, 0, 1, "ldc %lf", f
);
186 jvm_generate(p
, 0, 2, "dconst_0");
190 jvm_generate(p
, 0, 2, "dconst_1");
194 jvm_generate(p
, 0, 2, "ldc2 %lf", f
);
200 oberon_generator_new_var()
202 gen_var_t
* v
= GC_MALLOC(sizeof *v
);
203 memset(v
, 0, sizeof *v
);
208 jvm_generate_and_init_global_var(gen_var_t
* v
, struct gen_class
* class, char * access
, char * name
, char * desc
)
210 assert(class -> p
== NULL
);
211 fprintf(class -> fp
, ".field %s static %s %s\n\n", access
, name
, desc
);
213 v
-> storage
= JVM_STORAGE_STATIC
;
214 v
-> full_name
= new_string("%s/%s", class -> full_name
, name
);
215 v
-> desc
= new_string(desc
);
219 jvm_generate_and_init_field(gen_var_t
* v
, struct gen_class
* class, char * access
, char * name
, char * desc
)
221 assert(class -> p
== NULL
);
222 fprintf(class -> fp
, ".field %s %s %s\n\n", access
, name
, desc
);
224 v
-> storage
= JVM_STORAGE_FIELD
;
225 v
-> full_name
= new_string("%s/%s", class -> full_name
, name
);
226 v
-> desc
= new_string(desc
);
230 jvm_generate_and_init_local_var(gen_var_t
* v
, gen_proc_t
* p
, bool wide
)
232 v
-> storage
= JVM_STORAGE_REGISTER
;
233 v
-> reg
= jvm_alloc_register_untyped(p
-> rf
, wide
);
237 jvm_generate_and_init_named_local_var(gen_var_t
* v
, gen_proc_t
* p
, bool wide
, char * name
, char * desc
)
239 jvm_generate_and_init_local_var(v
, p
, wide
);
240 v
-> desc
= new_string(desc
);
241 jvm_generate(p
, 0, 0, ".var %i is %s %s from start to end", v
-> reg
, name
, desc
);
245 jvm_new_label_id(gen_proc_t
* p
)
247 int label_id
= p
-> label_id
;
253 jvm_get_label_name(int label_id
)
255 return new_string("L%i", label_id
);
259 jvm_generate_label(gen_proc_t
* p
, int label_id
)
261 jvm_generate(p
, 0, 0, "L%i:", label_id
);
265 jvm_generate_load(gen_proc_t
* p
, oberon_type_t
* src_type
, gen_var_t
* src
)
270 cell_size
= jvm_cell_size_for_type(src_type
);
272 switch(src
-> storage
)
274 case JVM_STORAGE_REGISTER
:
275 prefix
= jvm_get_prefix(src_type
);
276 jvm_generate(p
, 0, cell_size
, "%cload %i", prefix
, src
-> reg
);
278 case JVM_STORAGE_STATIC
:
279 jvm_generate(p
, 0, cell_size
, "getstatic %s %s", src
-> full_name
, src
-> desc
);
281 case JVM_STORAGE_FIELD
:
282 jvm_generate(p
, 1, cell_size
, "getfield %s %s", src
-> full_name
, src
-> desc
);
285 gen_error("jvm_generate_load: unknow storage type %i", src
-> storage
);
291 jvm_generate_store(gen_proc_t
* p
, oberon_type_t
* src_type
, gen_var_t
* dst
)
296 cell_size
= jvm_cell_size_for_type(src_type
);
298 switch(dst
-> storage
)
300 case JVM_STORAGE_REGISTER
:
301 prefix
= jvm_get_prefix(src_type
);
302 jvm_generate(p
, cell_size
, 0, "%cstore %i", prefix
, dst
-> reg
);
304 case JVM_STORAGE_STATIC
:
305 jvm_generate(p
, cell_size
, 0, "putstatic %s %s", dst
-> full_name
, dst
-> desc
);
307 case JVM_STORAGE_FIELD
:
308 jvm_generate(p
, 1 + cell_size
, 0, "putfield %s %s", dst
-> full_name
, dst
-> desc
);
311 gen_error("jvm_generate_store: unknow storage type %i", dst
-> storage
);
317 jvm_generate_new(gen_proc_t
* p
, oberon_type_t
* type
, int num
);
320 * Генерирует код для инициализации массива со статическим базовым типом
325 jvm_generate_array_initialization(gen_proc_t
* p
, oberon_type_t
* arr
)
328 oberon_type_t
* base
= arr
;
329 while(base
-> class == OBERON_TYPE_ARRAY
)
335 if(base
-> class != OBERON_TYPE_RECORD
)
337 jvm_generate(p
, 1, 0, "pop");
348 gen_var_t
* dst
= oberon_generator_new_var();
349 jvm_generate_and_init_local_var(dst
, p
, false);
350 jvm_generate_store(p
, arr
, dst
);
352 /* Входящие параметры заграблены.
353 * Теперь генерируем эквивалентный код:
355 * int len = dst.length
360 * dst[i, ...] = new record;
365 * Где "..." такой же код (начало и конец) для следующей размерности.
368 for(int i
= 0; i
< dim
; i
++)
370 loop
[i
].index
= oberon_generator_new_var();
371 loop
[i
].length
= oberon_generator_new_var();
372 loop
[i
].start
= jvm_new_label_id(p
);
373 loop
[i
].end
= jvm_new_label_id(p
);
374 jvm_generate_and_init_local_var(loop
[i
].index
, p
, false);
375 jvm_generate_and_init_local_var(loop
[i
].length
, p
, false);
377 /* TODO преределать через jvm_generate_load{{store}} */
379 jvm_generate(p
, 0, 1, "iconst_0");
380 jvm_generate(p
, 1, 0, "istore %i", loop
[i
].index
-> reg
);
382 jvm_generate_load(p
, arr
, dst
);
383 jvm_generate(p
, 1, 1, "arraylength");
384 jvm_generate(p
, 1, 0, "istore %i", loop
[i
].length
-> reg
);
386 /* if(i >= len) goto end; */
387 jvm_generate_label(p
, loop
[i
].start
);
388 jvm_generate(p
, 0, 1, "iload %i", loop
[i
].index
-> reg
);
389 jvm_generate(p
, 0, 1, "iload %i", loop
[i
].length
-> reg
);
390 jvm_generate(p
, 2, 0, "if_icmpge L%i", loop
[i
].end
);
393 jvm_generate_load(p
, arr
, dst
);
394 jvm_generate(p
, 0, 1, "iload %i", loop
[0].index
-> reg
);
395 for(int i
= 1; i
< dim
; i
++)
397 jvm_generate(p
, 2, 1, "aaload");
398 jvm_generate(p
, 0, 1, "iload %i", loop
[i
].index
-> reg
);
400 jvm_generate_new(p
, base
, 0);
401 jvm_generate(p
, 3, 0, "aastore");
403 for(int i
= dim
- 1; i
>= 0; i
--)
405 jvm_generate(p
, 0, 0, "iinc %i 1", loop
[i
].index
-> reg
);
406 jvm_generate(p
, 0, 0, "goto L%i", loop
[i
].start
);
407 jvm_generate_label(p
, loop
[i
].end
);
412 jvm_generate_new(gen_proc_t
* p
, oberon_type_t
* type
, int num
)
417 oberon_type_t
* base
;
419 switch(type
-> class)
421 case OBERON_TYPE_INTEGER
:
422 case OBERON_TYPE_BOOLEAN
:
423 case OBERON_TYPE_PROCEDURE
:
424 case OBERON_TYPE_REAL
:
425 case OBERON_TYPE_POINTER
:
426 gen_error("jvm_generate_new_static: static alocation not allowed");
428 case OBERON_TYPE_RECORD
:
430 cname
= jvm_get_class_full_name(type
);
431 jvm_generate(p
, 0, 1, "new %s", cname
);
432 jvm_generate(p
, 1, 2, "dup");
433 jvm_generate(p
, 1, 0, "invokespecial %s/<init>()V", cname
);
435 case OBERON_TYPE_ARRAY
:
438 desc
= jvm_get_descriptor(type
);
439 while(base
-> class == OBERON_TYPE_ARRAY
)
443 assert(base
-> size
== 0);
448 assert(base
-> size
> 0);
449 jvm_generate_push_int(p
, base
-> size
);
456 jvm_generate(p
, dim
, 1, "multianewarray %s %i", desc
, dim
);
457 jvm_generate(p
, 1, 2, "dup");
458 jvm_generate_array_initialization(p
, type
);
461 gen_error("jvm_generate_new_static: unk type class %i", type
-> class);
467 * Генерирует код для копирования полей из первой записи во вторую.
468 * ( aref_dst aref_src -- )
473 jvm_generate_copy_record(gen_proc_t
* p
, oberon_type_t
* rec
)
475 assert(rec
-> class == OBERON_TYPE_RECORD
);
476 char * desc
= jvm_get_descriptor(rec
);
477 char * cname
= jvm_get_class_full_name(rec
);
478 jvm_generate(p
, 1 + 1, 0, "invokestatic %s/$COPY$(%s%s)V", cname
, desc
, desc
);
482 * Генерирует кода для копирования массивов.
483 * ( aref_dst aref_src -- )
488 jvm_generate_copy_array(gen_proc_t
* p
, oberon_type_t
* arr
)
491 oberon_type_t
* base
= arr
;
492 while(base
-> class == OBERON_TYPE_ARRAY
)
505 gen_var_t
* dst
= oberon_generator_new_var();
506 gen_var_t
* src
= oberon_generator_new_var();
507 jvm_generate_and_init_local_var(dst
, p
, false);
508 jvm_generate_and_init_local_var(src
, p
, false);
510 jvm_generate_store(p
, arr
, src
);
511 jvm_generate_store(p
, arr
, dst
);
513 /* Входящие параметры заграблены.
514 * Теперь генерируем эквивалентный код:
516 * int len = dst.length
521 * copy from src[i, ...] to dst[i, ...];
526 * Где "..." такой же код (начало и конец) для следующей размерности.
529 for(int i
= 0; i
< dim
; i
++)
531 loop
[i
].index
= oberon_generator_new_var();
532 loop
[i
].length
= oberon_generator_new_var();
533 loop
[i
].start
= jvm_new_label_id(p
);
534 loop
[i
].end
= jvm_new_label_id(p
);
535 jvm_generate_and_init_local_var(loop
[i
].index
, p
, false);
536 jvm_generate_and_init_local_var(loop
[i
].length
, p
, false);
538 /* TODO преределать через jvm_generate_load{{store}} */
540 jvm_generate(p
, 0, 1, "iconst_0");
541 jvm_generate(p
, 1, 0, "istore %i", loop
[i
].index
-> reg
);
543 jvm_generate_load(p
, arr
, dst
);
544 jvm_generate(p
, 1, 1, "arraylength");
545 jvm_generate(p
, 1, 0, "istore %i", loop
[i
].length
-> reg
);
547 /* if(i >= len) goto end; */
548 jvm_generate_label(p
, loop
[i
].start
);
549 jvm_generate(p
, 0, 1, "iload %i", loop
[i
].index
-> reg
);
550 jvm_generate(p
, 0, 1, "iload %i", loop
[i
].length
-> reg
);
551 jvm_generate(p
, 2, 0, "if_icmpge L%i", loop
[i
].end
);
554 if(base
-> class == OBERON_TYPE_ARRAY
)
556 // Вся эта шляпа уже должна знать о всех размерностях
557 gen_error("jvm_generate_copy_array: wat");
559 else if(base
-> class == OBERON_TYPE_RECORD
)
561 /* Получаем записи по индексам ( -- dst src ) */
563 jvm_generate_load(p
, arr
, dst
);
564 for(int i
= 0; i
< dim
; i
++)
566 jvm_generate(p
, 0, 1, "iload %i", loop
[i
].index
-> reg
);
567 jvm_generate(p
, 2, 1, "aaload");
570 jvm_generate_load(p
, arr
, src
);
571 for(int i
= 0; i
< dim
; i
++)
573 jvm_generate(p
, 0, 1, "iload %i", loop
[i
].index
-> reg
);
574 jvm_generate(p
, 2, 1, "aaload");
577 /* Копируем записи ( dst src -- ) */
578 jvm_generate_copy_record(p
, base
);
582 char postfix
= jvm_get_postfix(base
);
583 int cell_size
= jvm_cell_size_for_postfix(postfix
);
585 /* Получаем массивы и индексы ( -- dst i src i ) */
587 jvm_generate_load(p
, arr
, dst
);
588 jvm_generate(p
, 0, 1, "iload %i", loop
[0].index
-> reg
);
589 for(int i
= 1; i
< dim
; i
++)
591 jvm_generate(p
, 2, 1, "aaload");
592 jvm_generate(p
, 0, 1, "iload %i", loop
[i
].index
-> reg
);
595 jvm_generate_load(p
, arr
, src
);
596 jvm_generate(p
, 0, 1, "iload %i", loop
[0].index
-> reg
);
597 for(int i
= 1; i
< dim
; i
++)
599 jvm_generate(p
, 2, 1, "aaload");
600 jvm_generate(p
, 0, 1, "iload %i", loop
[i
].index
-> reg
);
603 /* Копируем значения ( dst i src i -- ) */
604 jvm_generate(p
, 2, cell_size
, "%caload", postfix
);
605 jvm_generate(p
, 2 + cell_size
, 0, "%castore", postfix
);
608 for(int i
= dim
- 1; i
>= 0; i
--)
610 jvm_generate(p
, 0, 0, "iinc %i 1", loop
[i
].index
-> reg
);
611 jvm_generate(p
, 0, 0, "goto L%i", loop
[i
].start
);
612 jvm_generate_label(p
, loop
[i
].end
);
616 // ==========================================
617 // ==========================================
618 // ==========================================
621 oberon_generator_init_context(oberon_context_t
* ctx
)
623 gen_context_t
* gen_context
= GC_MALLOC(sizeof *gen_context
);
624 memset(gen_context
, 0, sizeof *gen_context
);
626 ctx
-> gen_context
= gen_context
;
630 oberon_generator_destroy_context(oberon_context_t
* ctx
)
635 oberon_generate_procedure_class(oberon_type_t
* proc
)
640 struct gen_class
* class;
642 cname
= jvm_get_class_full_name(proc
);
643 class = jvm_create_class(cname
);
646 fprintf(fp
, ".source SYSTEM\n");
647 fprintf(fp
, ".class public abstract %s\n", cname
);
648 fprintf(fp
, ".super java/lang/Object\n\n");
650 fprintf(fp
, ".method public <init>()V\n");
651 fprintf(fp
, " aload_0\n");
652 fprintf(fp
, " invokespecial java/lang/Object/<init>()V\n");
653 fprintf(fp
, " return\n");
654 fprintf(fp
, ".end method\n\n");
656 signature
= jvm_get_procedure_signature(proc
);
658 fprintf(fp
, ".method public abstract invoke%s\n", signature
);
659 fprintf(fp
, ".end method\n\n");
661 jvm_destroy_class(class);
665 oberon_generate_record_class(gen_module_t
* m
, oberon_type_t
* rec
)
668 struct gen_class
* class;
670 /* Устанавливаем новоый id */
671 rec
-> gen_type
-> rec_id
= m
-> rec_id
;
674 cname
= jvm_get_class_full_name(rec
);
675 class = jvm_create_class(cname
);
677 fprintf(class -> fp
, ".source %s\n", rec
-> module
-> name
);
678 fprintf(class -> fp
, ".class public %s\n", cname
);
679 fprintf(class -> fp
, ".super java/lang/Object\n\n");
681 rec
-> gen_type
-> class = class;
685 oberon_generator_init_type(oberon_context_t
* ctx
, oberon_type_t
* type
)
687 gen_type_t
* t
= GC_MALLOC(sizeof *t
);
688 memset(t
, 0, sizeof *t
);
689 type
-> gen_type
= t
;
691 switch(type
-> class)
693 case OBERON_TYPE_VOID
:
694 case OBERON_TYPE_INTEGER
:
695 case OBERON_TYPE_BOOLEAN
:
696 case OBERON_TYPE_ARRAY
:
697 case OBERON_TYPE_REAL
:
699 case OBERON_TYPE_RECORD
:
702 m
= type
-> module
-> gen_mod
;
703 oberon_generate_record_class(m
, type
);
705 case OBERON_TYPE_PROCEDURE
:
706 oberon_generate_procedure_class(type
);
708 case OBERON_TYPE_POINTER
:
711 gen_error("oberon_generator_init_type: unk calss %i", type
-> class);
717 oberon_generator_init_record(oberon_context_t
* ctx
, oberon_type_t
* rec
)
719 struct gen_class
* class;
720 class = rec
-> gen_type
-> class;
722 int num
= rec
-> num_decl
;
723 oberon_object_t
* field
= rec
-> decl
;
724 for(int i
= 0; i
< num
; i
++)
726 gen_var_t
* v
= field
-> gen_var
;
727 char * name
= field
-> name
;
728 char * desc
= jvm_get_descriptor(field
-> type
);
729 jvm_generate_and_init_field(v
, class, "public", name
, desc
);
730 field
= field
-> next
;
733 /* Стандартный конструктор класса */
734 /* Инициализирует внутренние статические записи и массивы */
735 gen_proc_t
* p
= jvm_create_proc(class);
736 jvm_generate_function_header(p
, "public", "<init>", "()V");
737 jvm_alloc_register_untyped(p
-> rf
, false);
738 jvm_generate(p
, 0, 1, "aload_0");
739 jvm_generate(p
, 1, 0, "invokespecial java/lang/Object/<init>()V");
740 num
= rec
-> num_decl
;
742 for(int i
= 0; i
< num
; i
++)
744 if(field
-> type
-> class == OBERON_TYPE_RECORD
745 || field
-> type
-> class == OBERON_TYPE_ARRAY
)
747 jvm_generate(p
, 0, 1, "aload_0");
748 jvm_generate_new(p
, field
-> type
, 0);
749 jvm_generate_store(p
, field
-> type
, field
-> gen_var
);
751 field
= field
-> next
;
753 jvm_generate(p
, 0, 0, "return");
754 jvm_generate_function_end(p
);
756 /* Метод для копирования полей класса */
757 /* reg0 == src -> reg1 == dst */
758 p
= jvm_create_proc(class);
759 gen_var_t
* copy_dst
= oberon_generator_new_var();
760 gen_var_t
* copy_src
= oberon_generator_new_var();
761 char * desc
= jvm_get_descriptor(rec
);
762 char * signature
= new_string("(%s%s)V", desc
, desc
);
763 jvm_generate_function_header(p
, "public static", "$COPY$", signature
);
764 jvm_generate_and_init_named_local_var(copy_dst
, p
, false, "dst", desc
);
765 jvm_generate_and_init_named_local_var(copy_src
, p
, false, "src", desc
);
766 num
= rec
-> num_decl
;
768 for(int i
= 0; i
< num
; i
++)
770 if(field
-> type
-> class == OBERON_TYPE_RECORD
)
772 jvm_generate_load(p
, rec
, copy_dst
);
773 jvm_generate_load(p
, field
-> type
, field
-> gen_var
);
774 jvm_generate_load(p
, rec
, copy_src
);
775 jvm_generate_load(p
, field
-> type
, field
-> gen_var
);
776 jvm_generate_copy_record(p
, field
-> type
);
778 else if(field
-> type
-> class == OBERON_TYPE_ARRAY
)
780 jvm_generate_load(p
, rec
, copy_dst
);
781 jvm_generate_load(p
, field
-> type
, field
-> gen_var
);
782 jvm_generate_load(p
, rec
, copy_src
);
783 jvm_generate_load(p
, field
-> type
, field
-> gen_var
);
784 jvm_generate_copy_array(p
, field
-> type
);
788 jvm_generate_load(p
, rec
, copy_dst
);
789 jvm_generate_load(p
, rec
, copy_src
);
790 jvm_generate_load(p
, field
-> type
, field
-> gen_var
);
791 jvm_generate_store(p
, field
-> type
, field
-> gen_var
);
793 field
= field
-> next
;
795 jvm_generate(p
, 0, 0, "return");
796 jvm_generate_function_end(p
);
798 jvm_destroy_class(class);
802 oberon_generator_init_var(oberon_context_t
* ctx
, oberon_object_t
* var
)
804 gen_var_t
* v
= oberon_generator_new_var();
808 m
= ctx
-> mod
-> gen_mod
;
810 struct gen_class
* class;
816 case OBERON_CLASS_VAR_PARAM
:
817 gen_error("generator: VAR-parameters not implemented");
819 case OBERON_CLASS_PARAM
:
820 /* Заполняется при генерации функции */
821 /* смотри jvm_init_local_object() */
823 case OBERON_CLASS_FIELD
:
824 /* Заполняются при инициализации структуры */
825 /* смотри oberon_generator_init_record() */
827 case OBERON_CLASS_VAR
:
828 /* Локальные заполняются при генерации функции */
829 /* смотри jvm_init_local_object() */
830 if(var
-> local
== 0)
832 desc
= jvm_get_descriptor(var
-> type
);
833 jvm_generate_and_init_global_var(v
, class, "public", var
-> name
, desc
);
837 gen_error("oberon_generator_init_var: unk var class %i", var
-> class);
843 oberon_generator_init_proc(oberon_context_t
* ctx
, oberon_object_t
* proc
)
845 struct gen_class
* class = proc
-> module
-> gen_mod
-> class;
846 proc
-> gen_proc
= jvm_create_proc(class);
850 gen_error("generator: local procedures not implemented");
855 oberon_generator_init_module(oberon_context_t
* ctx
, oberon_module_t
* mod
)
857 gen_module_t
* m
= GC_MALLOC(sizeof *m
);
858 memset(m
, 0, sizeof *m
);
861 struct gen_class
* class;
862 class = jvm_create_class(mod
-> name
);
864 fprintf(class -> fp
, ".source %s\n", mod
-> name
);
865 fprintf(class -> fp
, ".class %s\n", mod
-> name
);
866 fprintf(class -> fp
, ".super java/lang/Object\n\n");
870 ctx
-> gen_context
-> current_m
= m
;
874 oberon_generator_fini_module(oberon_module_t
* mod
)
876 jvm_destroy_class(mod
-> gen_mod
-> class);
880 push_expr(gen_proc_t
* p
, oberon_expr_t
* expr
);
883 oberon_generate_begin_module(oberon_context_t
* ctx
)
885 struct gen_class
* class = ctx
-> mod
-> gen_mod
-> class;
886 gen_proc_t
* p
= jvm_create_proc(class);
888 jvm_generate_function_header(p
, "public", "<init>", "()V");
889 jvm_alloc_register_untyped(p
-> rf
, false);
890 jvm_generate(p
, 0, 1, "aload_0");
891 jvm_generate(p
, 1, 0, "invokespecial java/lang/Object/<init>()V");
893 /* Инициализация переменных объявленных в модуле */
894 oberon_object_t
* x
= ctx
-> mod
-> decl
-> list
-> next
;
897 if(x
-> class == OBERON_CLASS_VAR
)
899 if(x
-> type
-> class == OBERON_TYPE_ARRAY
900 || x
-> type
-> class == OBERON_TYPE_RECORD
)
902 jvm_generate_new(p
, x
-> type
, 0);
903 jvm_generate_store(p
, x
-> type
, x
-> gen_var
);
911 oberon_generate_end_module(oberon_context_t
* ctx
)
913 struct gen_class
* class = ctx
-> mod
-> gen_mod
-> class;
914 gen_proc_t
* p
= class -> p
;
916 jvm_generate(p
, 0, 0, "return");
917 jvm_generate_function_end(class -> p
);
921 jvm_init_local_object(gen_proc_t
* p
, oberon_object_t
* x
)
926 struct gen_class
* class;
930 wide
= jvm_is_wide_type(x
-> type
);
931 desc
= jvm_get_descriptor(x
-> type
);
933 // Убеждаемся что сейчас находимся в функции
939 case OBERON_CLASS_VAR
:
940 case OBERON_CLASS_PARAM
:
941 jvm_generate_and_init_named_local_var(v
, p
, wide
, x
-> name
, desc
);
944 gen_error("jvm_init_local_object: wat");
950 oberon_generate_begin_proc(oberon_context_t
* ctx
, oberon_object_t
* proc
)
955 p
= proc
-> gen_proc
;
957 signature
= jvm_get_procedure_signature(proc
-> type
);
959 jvm_generate_function_header(p
, "public static", proc
-> name
, signature
);
961 oberon_object_t
* var
= proc
-> type
-> decl
;
964 jvm_init_local_object(p
, var
);
970 oberon_generate_end_proc(oberon_context_t
* ctx
)
975 m
= ctx
-> mod
-> gen_mod
;
978 jvm_generate_function_end(p
);
982 jvm_generate_call_proc(gen_proc_t
* p
, oberon_expr_t
* desig
)
984 assert(desig
-> is_item
);
985 assert(desig
-> item
.mode
== MODE_CALL
);
987 oberon_object_t
* proc
;
991 proc
= desig
-> item
.var
;
992 fullname
= jvm_get_field_full_name(proc
);
993 signature
= jvm_get_procedure_signature(proc
-> type
);
996 int result_cells
= jvm_cell_size_for_type(proc
-> type
-> base
);
998 int num
= desig
-> item
.num_args
;
999 oberon_expr_t
* arg
= desig
-> item
.args
;
1000 for(int i
= 0; i
< num
; i
++)
1002 args_cells
+= jvm_cell_size_for_type(arg
-> result
);
1007 jvm_generate(p
, args_cells
, result_cells
, "invokestatic %s%s", fullname
, signature
);
1011 oberon_generate_call_proc(oberon_context_t
* ctx
, oberon_expr_t
* desig
)
1013 jvm_generate_call_proc(ctx
-> gen_context
-> current_m
-> class -> p
, desig
);
1017 oberon_generate_return(oberon_context_t
* ctx
, oberon_expr_t
* expr
)
1024 m
= ctx
-> mod
-> gen_mod
;
1025 p
= m
-> class -> p
;
1030 prefix
= jvm_get_prefix(expr
-> result
);
1031 cell_size
= jvm_cell_size_for_type(expr
-> result
);
1032 jvm_generate(p
, cell_size
, 0, "%creturn", prefix
);
1036 jvm_generate(p
, 0, 0, "return");
1041 jvm_generate_expr_new_pointer(gen_proc_t
* p
, oberon_type_t
* type
, int num
, oberon_expr_t
* arg
)
1043 assert(type
-> class == OBERON_TYPE_POINTER
);
1045 for(int i
= 0; i
< num
; i
++)
1051 jvm_generate_new(p
, type
-> base
, num
);
1055 push_item(gen_proc_t
* p
, oberon_item_t
* item
)
1057 switch(item
-> mode
)
1060 jvm_generate_load(p
, item
-> result
, item
-> var
-> gen_var
);
1063 jvm_generate_push_int(p
, item
-> integer
);
1066 jvm_generate_push_int(p
, item
-> boolean
);
1069 jvm_generate_call_proc(p
, (oberon_expr_t
*) item
);
1073 char postfix
= jvm_get_postfix(item
-> result
);
1074 int cell_size
= jvm_cell_size_for_postfix(postfix
);
1075 push_item(p
, item
-> parent
);
1076 push_expr(p
, item
-> args
);
1077 jvm_generate(p
, 1 + 1, cell_size
, "%caload", postfix
);
1080 push_item(p
, item
-> parent
);
1081 jvm_generate_load(p
, item
-> result
, item
-> var
-> gen_var
);
1084 /* Все объекты в jvm представляются как указатели */
1085 push_item(p
, item
-> parent
);
1088 jvm_generate(p
, 0, 1, "aconst_null");
1091 jvm_generate_expr_new_pointer(p
, item
-> result
, item
-> num_args
, item
-> args
);
1094 jvm_generate_push_float(p
, item
-> real
, item
-> result
-> size
);
1097 gen_error("push_item: unk mode %i", item
-> mode
);
1103 jvm_generate_logical_not(gen_proc_t
* p
)
1105 int label_done
= jvm_new_label_id(p
);
1106 int label_false
= jvm_new_label_id(p
);
1107 char * label_name_done
= jvm_get_label_name(label_done
);
1108 char * label_name_false
= jvm_get_label_name(label_false
);
1110 jvm_generate(p
, 1, 0, "ifne %s", label_name_false
);
1111 jvm_generate(p
, 0, 1, "iconst_1");
1112 jvm_generate(p
, 0, 0, "goto %s", label_name_done
);
1113 jvm_generate_label(p
, label_false
);
1114 jvm_generate(p
, 0, 1, "iconst_0");
1115 jvm_generate_label(p
, label_done
);
1119 jvm_generate_abs(gen_proc_t
* p
, char prefix
)
1121 char t
= jvm_get_type_of_prefix(prefix
);
1122 int cell_size
= jvm_cell_size_for_postfix(prefix
);
1123 jvm_generate(p
, cell_size
, cell_size
, "invokestatic java/lang/Math/abs(%c)%c", t
, t
);
1127 jvm_generate_compare_op(gen_proc_t
* p
, char prefix
, int op
)
1129 int label_true
= jvm_new_label_id(p
);
1130 int label_done
= jvm_new_label_id(p
);
1131 char * label_name_true
= jvm_get_label_name(label_true
);
1132 char * label_name_done
= jvm_get_label_name(label_done
);
1133 int cell_size
= 2 * jvm_cell_size_for_postfix(prefix
);
1135 assert(prefix
== 'i' || prefix
== 'a');
1137 const char * cmpop
= "";
1159 gen_error("jvm_generate_compare_op: wat");
1163 jvm_generate(p
, cell_size
, 0, "if_%ccmp%s %s", prefix
, cmpop
, label_name_true
);
1164 jvm_generate(p
, 0, 1, "iconst_0");
1165 jvm_generate(p
, 0, 0, "goto %s", label_name_done
);
1166 jvm_generate_label(p
, label_true
);
1167 jvm_generate(p
, 0, 1, "iconst_1");
1168 jvm_generate_label(p
, label_done
);
1172 jvm_generate_operator(gen_proc_t
* p
, char prefix
, int op
)
1174 int cell_size
= jvm_cell_size_for_postfix(prefix
);
1177 case OP_UNARY_MINUS
:
1178 jvm_generate(p
, cell_size
, cell_size
, "%cneg", prefix
);
1180 case OP_BITWISE_NOT
:
1181 jvm_generate_push_int(p
, -1);
1182 jvm_generate(p
, 2 * cell_size
, cell_size
, "%cxor", prefix
);
1185 jvm_generate_logical_not(p
);
1188 jvm_generate_abs(p
, prefix
);
1192 jvm_generate(p
, 2 * cell_size
, cell_size
, "%cadd", prefix
);
1195 jvm_generate(p
, 2 * cell_size
, cell_size
, "%csub", prefix
);
1198 jvm_generate(p
, 2 * cell_size
, cell_size
, "%cmul", prefix
);
1201 jvm_generate(p
, 2 * cell_size
, cell_size
, "%cdiv", prefix
);
1204 jvm_generate(p
, 2 * cell_size
, cell_size
, "%crem", prefix
);
1206 case OP_BITWISE_AND
:
1207 jvm_generate(p
, 2 * cell_size
, cell_size
, "%cand", prefix
);
1209 case OP_BITWISE_XOR
:
1210 jvm_generate(p
, 2 * cell_size
, cell_size
, "%cxor", prefix
);
1213 jvm_generate(p
, 2 * cell_size
, cell_size
, "%cor", prefix
);
1222 jvm_generate_compare_op(p
, prefix
, op
);
1225 gen_error("jvm_generate_operator: unk op %i", op
);
1231 jvm_generate_logical_or(gen_proc_t
* p
, oberon_expr_t
* a
, oberon_expr_t
* b
)
1233 int label_calc_b
= jvm_new_label_id(p
);
1234 int label_done
= jvm_new_label_id(p
);
1235 char * label_name_calc_b
= jvm_get_label_name(label_calc_b
);
1236 char * label_name_done
= jvm_get_label_name(label_done
);
1238 /* a OR b -- если a, то TRUE, иначе b */
1241 jvm_generate(p
, 1, 0, "ifne %s", label_name_calc_b
);
1242 jvm_generate(p
, 0, 1, "iconst_1");
1243 jvm_generate(p
, 0, 0, "goto %s", label_name_done
);
1244 jvm_generate_label(p
, label_calc_b
);
1246 jvm_generate_label(p
, label_done
);
1250 jvm_generate_logical_and(gen_proc_t
* p
, oberon_expr_t
* a
, oberon_expr_t
* b
)
1252 int label_false
= jvm_new_label_id(p
);
1253 int label_done
= jvm_new_label_id(p
);
1254 char * label_name_false
= jvm_get_label_name(label_false
);
1255 char * label_name_done
= jvm_get_label_name(label_done
);
1257 /* a AND b -- если a, то b, иначе FALSE */
1260 jvm_generate(p
, 1, 0, "ifne %s", label_name_false
);
1262 jvm_generate(p
, 0, 0, "goto %s", label_name_done
);
1263 jvm_generate_label(p
, label_false
);
1264 jvm_generate(p
, 0, 1, "iconst_0");
1265 jvm_generate_label(p
, label_done
);
1269 push_operator(gen_proc_t
* p
, oberon_oper_t
* oper
)
1271 char prefix
= jvm_get_prefix(oper
-> result
);
1272 int op
= oper
-> op
;
1275 case OP_UNARY_MINUS
:
1276 case OP_BITWISE_NOT
:
1279 push_expr(p
, oper
-> left
);
1280 jvm_generate_operator(p
, prefix
, op
);
1288 case OP_BITWISE_AND
:
1289 case OP_BITWISE_XOR
:
1298 push_expr(p
, oper
-> left
);
1299 push_expr(p
, oper
-> right
);
1300 jvm_generate_operator(p
, prefix
, op
);
1304 jvm_generate_logical_or(p
, oper
-> left
, oper
-> right
);
1307 jvm_generate_logical_and(p
, oper
-> left
, oper
-> right
);
1310 gen_error("push_oper: unk op %i", op
);
1316 push_expr(gen_proc_t
* p
, oberon_expr_t
* expr
)
1320 push_item(p
, (oberon_item_t
*) expr
);
1324 push_operator(p
, (oberon_oper_t
*) expr
);
1329 store_expr(gen_proc_t
* p
, oberon_expr_t
* dst
, oberon_expr_t
* src
)
1331 assert(dst
-> is_item
);
1332 oberon_item_t
* item
= (oberon_item_t
*) dst
;
1334 if(dst
-> result
-> class == OBERON_TYPE_ARRAY
1335 || src
-> result
-> class == OBERON_TYPE_ARRAY
)
1339 jvm_generate_copy_array(p
, dst
-> result
);
1341 else if(dst
-> result
-> class == OBERON_TYPE_RECORD
1342 || src
-> result
-> class == OBERON_TYPE_RECORD
)
1346 jvm_generate_copy_record(p
, dst
-> result
);
1348 else switch(item
-> mode
)
1352 jvm_generate_store(p
, src
-> result
, item
-> var
-> gen_var
);
1356 char postfix
= jvm_get_postfix(src
-> result
);
1357 int cell_size
= jvm_cell_size_for_postfix(postfix
);
1358 push_item(p
, item
-> parent
);
1359 push_expr(p
, item
-> args
);
1361 jvm_generate(p
, 1 + 1 + cell_size
, 0, "%castore", postfix
);
1364 push_item(p
, item
-> parent
);
1366 jvm_generate_store(p
, src
-> result
, item
-> var
-> gen_var
);
1369 gen_error("store_expr: unk mode %i", item
-> mode
);
1375 oberon_generate_assign(oberon_context_t
* ctx
, oberon_expr_t
* src
, oberon_expr_t
* dst
)
1380 m
= ctx
-> mod
-> gen_mod
;
1381 p
= m
-> class -> p
;
1383 store_expr(p
, dst
, src
);
1387 oberon_generate_code(oberon_context_t
* ctx
)
1389 printf("generate code\n");
1393 oberon_generator_dump(oberon_context_t
* ctx
, char * path
)
1395 printf("jit: dump code\n");
1399 oberon_generator_get_procedure(oberon_context_t
* ctx
, const char * name
)
1401 printf("jit: get pointer to procedure %s\n", name
);
1406 oberon_generator_get_var(oberon_context_t
* ctx
, const char * name
)
1408 printf("jit: get pointer to var %s\n", name
);