dc79ea11cd0cbb656036a37d67d9a512c46517ae
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
);
353 * Входящие параметры заграблены.
354 * Теперь генерируем эквивалентный код:
356 * int len = dst.length
361 * dst[i, ...] = new record;
366 * Где "..." такой же код (начало и конец) для следующей размерности.
369 for(int i
= 0; i
< dim
; i
++)
371 loop
[i
].index
= oberon_generator_new_var();
372 loop
[i
].length
= oberon_generator_new_var();
373 loop
[i
].start
= jvm_new_label_id(p
);
374 loop
[i
].end
= jvm_new_label_id(p
);
375 jvm_generate_and_init_local_var(loop
[i
].index
, p
, false);
376 jvm_generate_and_init_local_var(loop
[i
].length
, p
, false);
378 /* TODO преределать через jvm_generate_load{{store}} */
380 jvm_generate(p
, 0, 1, "iconst_0");
381 jvm_generate(p
, 1, 0, "istore %i", loop
[i
].index
-> reg
);
383 jvm_generate_load(p
, arr
, dst
);
384 jvm_generate(p
, 1, 1, "arraylength");
385 jvm_generate(p
, 1, 0, "istore %i", loop
[i
].length
-> reg
);
387 /* if(i >= len) goto end; */
388 jvm_generate_label(p
, loop
[i
].start
);
389 jvm_generate(p
, 0, 1, "iload %i", loop
[i
].index
-> reg
);
390 jvm_generate(p
, 0, 1, "iload %i", loop
[i
].length
-> reg
);
391 jvm_generate(p
, 2, 0, "if_icmpge L%i", loop
[i
].end
);
394 jvm_generate_load(p
, arr
, dst
);
395 jvm_generate(p
, 0, 1, "iload %i", loop
[0].index
-> reg
);
396 for(int i
= 1; i
< dim
; i
++)
398 jvm_generate(p
, 2, 1, "aaload");
399 jvm_generate(p
, 0, 1, "iload %i", loop
[i
].index
-> reg
);
401 jvm_generate_new(p
, base
, 0);
402 jvm_generate(p
, 3, 0, "aastore");
404 for(int i
= dim
- 1; i
>= 0; i
--)
406 jvm_generate(p
, 0, 0, "iinc %i 1", loop
[i
].index
-> reg
);
407 jvm_generate(p
, 0, 0, "goto L%i", loop
[i
].start
);
408 jvm_generate_label(p
, loop
[i
].end
);
413 jvm_generate_new(gen_proc_t
* p
, oberon_type_t
* type
, int num
)
418 oberon_type_t
* base
;
420 switch(type
-> class)
422 case OBERON_TYPE_INTEGER
:
423 case OBERON_TYPE_BOOLEAN
:
424 case OBERON_TYPE_PROCEDURE
:
425 case OBERON_TYPE_REAL
:
426 case OBERON_TYPE_POINTER
:
427 gen_error("jvm_generate_new_static: static alocation not allowed");
429 case OBERON_TYPE_RECORD
:
431 cname
= jvm_get_class_full_name(type
);
432 jvm_generate(p
, 0, 1, "new %s", cname
);
433 jvm_generate(p
, 1, 2, "dup");
434 jvm_generate(p
, 1, 0, "invokespecial %s/<init>()V", cname
);
436 case OBERON_TYPE_ARRAY
:
439 desc
= jvm_get_descriptor(type
);
440 while(base
-> class == OBERON_TYPE_ARRAY
)
444 assert(base
-> size
== 0);
449 assert(base
-> size
> 0);
450 jvm_generate_push_int(p
, base
-> size
);
457 jvm_generate(p
, dim
, 1, "multianewarray %s %i", desc
, dim
);
458 jvm_generate(p
, 1, 2, "dup");
459 jvm_generate_array_initialization(p
, type
);
462 gen_error("jvm_generate_new_static: unk type class %i", type
-> class);
468 * Генерирует код для копирования полей из первой записи во вторую.
469 * ( aref_dst aref_src -- )
474 jvm_generate_copy_record(gen_proc_t
* p
, oberon_type_t
* rec
)
476 assert(rec
-> class == OBERON_TYPE_RECORD
);
477 char * desc
= jvm_get_descriptor(rec
);
478 char * cname
= jvm_get_class_full_name(rec
);
479 jvm_generate(p
, 1 + 1, 0, "invokestatic %s/$COPY$(%s%s)V", cname
, desc
, desc
);
483 * Генерирует кода для копирования массивов.
484 * ( aref_dst aref_src -- )
489 jvm_generate_copy_array(gen_proc_t
* p
, oberon_type_t
* arr
)
492 oberon_type_t
* base
= arr
;
493 while(base
-> class == OBERON_TYPE_ARRAY
)
506 gen_var_t
* dst
= oberon_generator_new_var();
507 gen_var_t
* src
= oberon_generator_new_var();
508 jvm_generate_and_init_local_var(dst
, p
, false);
509 jvm_generate_and_init_local_var(src
, p
, false);
511 jvm_generate_store(p
, arr
, src
);
512 jvm_generate_store(p
, arr
, dst
);
515 * Входящие параметры заграблены.
516 * Теперь генерируем эквивалентный код:
518 * int len = dst.length
523 * copy from src[i, ...] to dst[i, ...];
528 * Где "..." такой же код (начало и конец) для следующей размерности.
531 for(int i
= 0; i
< dim
; i
++)
533 loop
[i
].index
= oberon_generator_new_var();
534 loop
[i
].length
= oberon_generator_new_var();
535 loop
[i
].start
= jvm_new_label_id(p
);
536 loop
[i
].end
= jvm_new_label_id(p
);
537 jvm_generate_and_init_local_var(loop
[i
].index
, p
, false);
538 jvm_generate_and_init_local_var(loop
[i
].length
, p
, false);
540 /* TODO преределать через jvm_generate_load{{store}} */
542 jvm_generate(p
, 0, 1, "iconst_0");
543 jvm_generate(p
, 1, 0, "istore %i", loop
[i
].index
-> reg
);
545 jvm_generate_load(p
, arr
, dst
);
546 jvm_generate(p
, 1, 1, "arraylength");
547 jvm_generate(p
, 1, 0, "istore %i", loop
[i
].length
-> reg
);
549 /* if(i >= len) goto end; */
550 jvm_generate_label(p
, loop
[i
].start
);
551 jvm_generate(p
, 0, 1, "iload %i", loop
[i
].index
-> reg
);
552 jvm_generate(p
, 0, 1, "iload %i", loop
[i
].length
-> reg
);
553 jvm_generate(p
, 2, 0, "if_icmpge L%i", loop
[i
].end
);
556 if(base
-> class == OBERON_TYPE_RECORD
)
558 /* Получаем записи по индексам ( -- dst src ) */
560 jvm_generate_load(p
, arr
, dst
);
561 for(int i
= 0; i
< dim
; i
++)
563 jvm_generate(p
, 0, 1, "iload %i", loop
[i
].index
-> reg
);
564 jvm_generate(p
, 2, 1, "aaload");
567 jvm_generate_load(p
, arr
, src
);
568 for(int i
= 0; i
< dim
; i
++)
570 jvm_generate(p
, 0, 1, "iload %i", loop
[i
].index
-> reg
);
571 jvm_generate(p
, 2, 1, "aaload");
574 /* Копируем записи ( dst src -- ) */
575 jvm_generate_copy_record(p
, base
);
579 char postfix
= jvm_get_postfix(base
);
580 int cell_size
= jvm_cell_size_for_postfix(postfix
);
582 /* Получаем массивы и индексы ( -- dst i src i ) */
584 jvm_generate_load(p
, arr
, dst
);
585 jvm_generate(p
, 0, 1, "iload %i", loop
[0].index
-> reg
);
586 for(int i
= 1; i
< dim
; i
++)
588 jvm_generate(p
, 2, 1, "aaload");
589 jvm_generate(p
, 0, 1, "iload %i", loop
[i
].index
-> reg
);
592 jvm_generate_load(p
, arr
, src
);
593 jvm_generate(p
, 0, 1, "iload %i", loop
[0].index
-> reg
);
594 for(int i
= 1; i
< dim
; i
++)
596 jvm_generate(p
, 2, 1, "aaload");
597 jvm_generate(p
, 0, 1, "iload %i", loop
[i
].index
-> reg
);
600 /* Копируем значения ( dst i src i -- ) */
601 jvm_generate(p
, 2, cell_size
, "%caload", postfix
);
602 jvm_generate(p
, 2 + cell_size
, 0, "%castore", postfix
);
605 for(int i
= dim
- 1; i
>= 0; i
--)
607 jvm_generate(p
, 0, 0, "iinc %i 1", loop
[i
].index
-> reg
);
608 jvm_generate(p
, 0, 0, "goto L%i", loop
[i
].start
);
609 jvm_generate_label(p
, loop
[i
].end
);
613 // ==========================================
614 // ==========================================
615 // ==========================================
618 oberon_generator_init_context(oberon_context_t
* ctx
)
620 gen_context_t
* gen_context
= GC_MALLOC(sizeof *gen_context
);
621 memset(gen_context
, 0, sizeof *gen_context
);
623 ctx
-> gen_context
= gen_context
;
627 oberon_generator_destroy_context(oberon_context_t
* ctx
)
632 oberon_generate_procedure_class(oberon_type_t
* proc
)
637 struct gen_class
* class;
639 cname
= jvm_get_class_full_name(proc
);
640 class = jvm_create_class(cname
);
643 fprintf(fp
, ".source SYSTEM\n");
644 fprintf(fp
, ".class public abstract %s\n", cname
);
645 fprintf(fp
, ".super java/lang/Object\n\n");
647 fprintf(fp
, ".method public <init>()V\n");
648 fprintf(fp
, " aload_0\n");
649 fprintf(fp
, " invokespecial java/lang/Object/<init>()V\n");
650 fprintf(fp
, " return\n");
651 fprintf(fp
, ".end method\n\n");
653 signature
= jvm_get_procedure_signature(proc
);
655 fprintf(fp
, ".method public abstract invoke%s\n", signature
);
656 fprintf(fp
, ".end method\n\n");
658 jvm_destroy_class(class);
662 oberon_generate_record_class(gen_module_t
* m
, oberon_type_t
* rec
)
665 struct gen_class
* class;
667 /* Устанавливаем новоый id */
668 rec
-> gen_type
-> rec_id
= m
-> rec_id
;
671 cname
= jvm_get_class_full_name(rec
);
672 class = jvm_create_class(cname
);
674 fprintf(class -> fp
, ".source %s\n", rec
-> module
-> name
);
675 fprintf(class -> fp
, ".class public %s\n", cname
);
676 fprintf(class -> fp
, ".super java/lang/Object\n\n");
678 rec
-> gen_type
-> class = class;
682 oberon_generator_init_type(oberon_context_t
* ctx
, oberon_type_t
* type
)
684 gen_type_t
* t
= GC_MALLOC(sizeof *t
);
685 memset(t
, 0, sizeof *t
);
686 type
-> gen_type
= t
;
688 switch(type
-> class)
690 case OBERON_TYPE_VOID
:
691 case OBERON_TYPE_INTEGER
:
692 case OBERON_TYPE_BOOLEAN
:
693 case OBERON_TYPE_ARRAY
:
694 case OBERON_TYPE_REAL
:
696 case OBERON_TYPE_RECORD
:
699 m
= type
-> module
-> gen_mod
;
700 oberon_generate_record_class(m
, type
);
702 case OBERON_TYPE_PROCEDURE
:
703 oberon_generate_procedure_class(type
);
705 case OBERON_TYPE_POINTER
:
708 gen_error("oberon_generator_init_type: unk calss %i", type
-> class);
714 oberon_generator_init_record(oberon_context_t
* ctx
, oberon_type_t
* rec
)
716 struct gen_class
* class;
717 class = rec
-> gen_type
-> class;
719 int num
= rec
-> num_decl
;
720 oberon_object_t
* field
= rec
-> decl
;
721 for(int i
= 0; i
< num
; i
++)
723 gen_var_t
* v
= field
-> gen_var
;
724 char * name
= field
-> name
;
725 char * desc
= jvm_get_descriptor(field
-> type
);
726 jvm_generate_and_init_field(v
, class, "public", name
, desc
);
727 field
= field
-> next
;
730 /* Стандартный конструктор класса */
731 /* Инициализирует внутренние статические записи и массивы */
732 gen_proc_t
* p
= jvm_create_proc(class);
733 jvm_generate_function_header(p
, "public", "<init>", "()V");
734 jvm_alloc_register_untyped(p
-> rf
, false);
735 jvm_generate(p
, 0, 1, "aload_0");
736 jvm_generate(p
, 1, 0, "invokespecial java/lang/Object/<init>()V");
737 num
= rec
-> num_decl
;
739 for(int i
= 0; i
< num
; i
++)
741 if(field
-> type
-> class == OBERON_TYPE_RECORD
742 || field
-> type
-> class == OBERON_TYPE_ARRAY
)
744 jvm_generate(p
, 0, 1, "aload_0");
745 jvm_generate_new(p
, field
-> type
, 0);
746 jvm_generate_store(p
, field
-> type
, field
-> gen_var
);
748 field
= field
-> next
;
750 jvm_generate(p
, 0, 0, "return");
751 jvm_generate_function_end(p
);
753 /* Метод для копирования полей класса */
754 /* reg0 == src -> reg1 == dst */
755 p
= jvm_create_proc(class);
756 gen_var_t
* copy_dst
= oberon_generator_new_var();
757 gen_var_t
* copy_src
= oberon_generator_new_var();
758 char * desc
= jvm_get_descriptor(rec
);
759 char * signature
= new_string("(%s%s)V", desc
, desc
);
760 jvm_generate_function_header(p
, "public static", "$COPY$", signature
);
761 jvm_generate_and_init_named_local_var(copy_dst
, p
, false, "dst", desc
);
762 jvm_generate_and_init_named_local_var(copy_src
, p
, false, "src", desc
);
763 num
= rec
-> num_decl
;
765 for(int i
= 0; i
< num
; i
++)
767 if(field
-> type
-> class == OBERON_TYPE_RECORD
)
769 jvm_generate_load(p
, rec
, copy_dst
);
770 jvm_generate_load(p
, field
-> type
, field
-> gen_var
);
771 jvm_generate_load(p
, rec
, copy_src
);
772 jvm_generate_load(p
, field
-> type
, field
-> gen_var
);
773 jvm_generate_copy_record(p
, field
-> type
);
775 else if(field
-> type
-> class == OBERON_TYPE_ARRAY
)
777 jvm_generate_load(p
, rec
, copy_dst
);
778 jvm_generate_load(p
, field
-> type
, field
-> gen_var
);
779 jvm_generate_load(p
, rec
, copy_src
);
780 jvm_generate_load(p
, field
-> type
, field
-> gen_var
);
781 jvm_generate_copy_array(p
, field
-> type
);
785 jvm_generate_load(p
, rec
, copy_dst
);
786 jvm_generate_load(p
, rec
, copy_src
);
787 jvm_generate_load(p
, field
-> type
, field
-> gen_var
);
788 jvm_generate_store(p
, field
-> type
, field
-> gen_var
);
790 field
= field
-> next
;
792 jvm_generate(p
, 0, 0, "return");
793 jvm_generate_function_end(p
);
795 jvm_destroy_class(class);
799 oberon_generator_init_var(oberon_context_t
* ctx
, oberon_object_t
* var
)
801 gen_var_t
* v
= oberon_generator_new_var();
805 m
= ctx
-> mod
-> gen_mod
;
807 struct gen_class
* class;
813 case OBERON_CLASS_VAR_PARAM
:
814 gen_error("generator: VAR-parameters not implemented");
816 case OBERON_CLASS_PARAM
:
817 /* Заполняется при генерации функции */
818 /* смотри jvm_init_local_object() */
820 case OBERON_CLASS_FIELD
:
821 /* Заполняются при инициализации структуры */
822 /* смотри oberon_generator_init_record() */
824 case OBERON_CLASS_VAR
:
825 /* Локальные заполняются при генерации функции */
826 /* смотри jvm_init_local_object() */
827 if(var
-> local
== 0)
829 desc
= jvm_get_descriptor(var
-> type
);
830 jvm_generate_and_init_global_var(v
, class, "public", var
-> name
, desc
);
834 gen_error("oberon_generator_init_var: unk var class %i", var
-> class);
840 oberon_generator_init_proc(oberon_context_t
* ctx
, oberon_object_t
* proc
)
842 struct gen_class
* class = proc
-> module
-> gen_mod
-> class;
843 proc
-> gen_proc
= jvm_create_proc(class);
847 gen_error("generator: local procedures not implemented");
852 oberon_generator_init_module(oberon_context_t
* ctx
, oberon_module_t
* mod
)
854 gen_module_t
* m
= GC_MALLOC(sizeof *m
);
855 memset(m
, 0, sizeof *m
);
858 struct gen_class
* class;
859 class = jvm_create_class(mod
-> name
);
861 fprintf(class -> fp
, ".source %s\n", mod
-> name
);
862 fprintf(class -> fp
, ".class %s\n", mod
-> name
);
863 fprintf(class -> fp
, ".super java/lang/Object\n\n");
867 ctx
-> gen_context
-> current_m
= m
;
871 oberon_generator_fini_module(oberon_module_t
* mod
)
873 jvm_destroy_class(mod
-> gen_mod
-> class);
877 push_expr(gen_proc_t
* p
, oberon_expr_t
* expr
);
880 oberon_generate_begin_module(oberon_context_t
* ctx
)
882 struct gen_class
* class = ctx
-> mod
-> gen_mod
-> class;
883 gen_proc_t
* p
= jvm_create_proc(class);
885 jvm_generate_function_header(p
, "public", "<init>", "()V");
886 jvm_alloc_register_untyped(p
-> rf
, false);
887 jvm_generate(p
, 0, 1, "aload_0");
888 jvm_generate(p
, 1, 0, "invokespecial java/lang/Object/<init>()V");
890 /* Инициализация переменных объявленных в модуле */
891 oberon_object_t
* x
= ctx
-> mod
-> decl
-> list
-> next
;
894 if(x
-> class == OBERON_CLASS_VAR
)
896 if(x
-> type
-> class == OBERON_TYPE_ARRAY
897 || x
-> type
-> class == OBERON_TYPE_RECORD
)
899 jvm_generate_new(p
, x
-> type
, 0);
900 jvm_generate_store(p
, x
-> type
, x
-> gen_var
);
908 oberon_generate_end_module(oberon_context_t
* ctx
)
910 struct gen_class
* class = ctx
-> mod
-> gen_mod
-> class;
911 gen_proc_t
* p
= class -> p
;
913 jvm_generate(p
, 0, 0, "return");
914 jvm_generate_function_end(class -> p
);
918 jvm_init_local_object(gen_proc_t
* p
, oberon_object_t
* x
)
923 struct gen_class
* class;
927 wide
= jvm_is_wide_type(x
-> type
);
928 desc
= jvm_get_descriptor(x
-> type
);
930 // Убеждаемся что сейчас находимся в функции
936 case OBERON_CLASS_VAR
:
937 case OBERON_CLASS_PARAM
:
938 jvm_generate_and_init_named_local_var(v
, p
, wide
, x
-> name
, desc
);
941 gen_error("jvm_init_local_object: wat");
947 * Генерирует код для получения размера измерения массива
948 * Аналог Обероновского LEN(v, n); где n = 0 - первое измерение.
953 jvm_generate_array_len(gen_proc_t
* p
, int dim
)
957 jvm_generate(p
, 0, 1, "iconst_0");
958 jvm_generate(p
, 2, 1, "aaload");
961 jvm_generate(p
, 1, 1, "arraylength");
965 jvm_generate_array_duplicate_and_replace(gen_proc_t
* p
, gen_var_t
* v
, oberon_type_t
* arr
)
968 oberon_type_t
* base
= arr
;
969 while(base
-> class == OBERON_TYPE_ARRAY
)
971 if(base
-> size
== 0)
973 jvm_generate_load(p
, arr
, v
);
974 jvm_generate_array_len(p
, dim
);
980 jvm_generate_new(p
, arr
, dim
);
981 jvm_generate(p
, 1, 2, "dup");
982 jvm_generate_load(p
, arr
, v
);
983 jvm_generate_copy_array(p
, arr
);
984 jvm_generate_store(p
, arr
, v
);
988 jvm_generate_record_duplicate_and_replace(gen_proc_t
* p
, gen_var_t
* v
, oberon_type_t
* rec
)
990 jvm_generate_new(p
, rec
, 0);
991 jvm_generate(p
, 1, 2, "dup");
992 jvm_generate_load(p
, rec
, v
);
993 jvm_generate_copy_record(p
, rec
);
994 jvm_generate_store(p
, rec
, v
);
998 oberon_generate_begin_proc(oberon_context_t
* ctx
, oberon_object_t
* proc
)
1003 p
= proc
-> gen_proc
;
1005 signature
= jvm_get_procedure_signature(proc
-> type
);
1006 jvm_generate_function_header(p
, "public static", proc
-> name
, signature
);
1008 /* Выделение регистров под параметры и переменные */
1009 oberon_object_t
* var
= proc
-> type
-> decl
;
1012 jvm_init_local_object(p
, var
);
1016 /* Копирование статических/открытых массивов и записей */
1017 var
= proc
-> type
-> decl
;
1020 if(var
-> class == OBERON_CLASS_PARAM
|| var
-> class == OBERON_CLASS_VAR_PARAM
)
1022 if(var
-> type
-> class == OBERON_TYPE_ARRAY
)
1024 jvm_generate_array_duplicate_and_replace(p
, var
-> gen_var
, var
-> type
);
1026 else if(var
-> type
-> class == OBERON_TYPE_RECORD
)
1028 jvm_generate_record_duplicate_and_replace(p
, var
-> gen_var
, var
-> type
);
1036 oberon_generate_end_proc(oberon_context_t
* ctx
)
1041 m
= ctx
-> mod
-> gen_mod
;
1042 p
= m
-> class -> p
;
1044 jvm_generate_function_end(p
);
1048 jvm_generate_call_proc(gen_proc_t
* p
, oberon_expr_t
* desig
)
1050 assert(desig
-> is_item
);
1051 assert(desig
-> item
.mode
== MODE_CALL
);
1053 oberon_object_t
* proc
;
1057 proc
= desig
-> item
.var
;
1058 fullname
= jvm_get_field_full_name(proc
);
1059 signature
= jvm_get_procedure_signature(proc
-> type
);
1062 int result_cells
= jvm_cell_size_for_type(proc
-> type
-> base
);
1064 int num
= desig
-> item
.num_args
;
1065 oberon_expr_t
* arg
= desig
-> item
.args
;
1066 for(int i
= 0; i
< num
; i
++)
1068 args_cells
+= jvm_cell_size_for_type(arg
-> result
);
1073 jvm_generate(p
, args_cells
, result_cells
, "invokestatic %s%s", fullname
, signature
);
1077 oberon_generate_call_proc(oberon_context_t
* ctx
, oberon_expr_t
* desig
)
1079 jvm_generate_call_proc(ctx
-> gen_context
-> current_m
-> class -> p
, desig
);
1083 oberon_generate_return(oberon_context_t
* ctx
, oberon_expr_t
* expr
)
1090 m
= ctx
-> mod
-> gen_mod
;
1091 p
= m
-> class -> p
;
1096 prefix
= jvm_get_prefix(expr
-> result
);
1097 cell_size
= jvm_cell_size_for_type(expr
-> result
);
1098 jvm_generate(p
, cell_size
, 0, "%creturn", prefix
);
1102 jvm_generate(p
, 0, 0, "return");
1107 jvm_generate_expr_new_pointer(gen_proc_t
* p
, oberon_type_t
* type
, int num
, oberon_expr_t
* arg
)
1109 assert(type
-> class == OBERON_TYPE_POINTER
);
1111 for(int i
= 0; i
< num
; i
++)
1117 jvm_generate_new(p
, type
-> base
, num
);
1121 push_item(gen_proc_t
* p
, oberon_item_t
* item
)
1123 switch(item
-> mode
)
1126 jvm_generate_load(p
, item
-> result
, item
-> var
-> gen_var
);
1129 jvm_generate_push_int(p
, item
-> integer
);
1132 jvm_generate_push_int(p
, item
-> boolean
);
1135 jvm_generate_call_proc(p
, (oberon_expr_t
*) item
);
1139 char postfix
= jvm_get_postfix(item
-> result
);
1140 int cell_size
= jvm_cell_size_for_postfix(postfix
);
1141 push_item(p
, item
-> parent
);
1142 push_expr(p
, item
-> args
);
1143 jvm_generate(p
, 1 + 1, cell_size
, "%caload", postfix
);
1146 push_item(p
, item
-> parent
);
1147 jvm_generate_load(p
, item
-> result
, item
-> var
-> gen_var
);
1150 /* Все объекты в jvm представляются как указатели */
1151 push_item(p
, item
-> parent
);
1154 jvm_generate(p
, 0, 1, "aconst_null");
1157 jvm_generate_expr_new_pointer(p
, item
-> result
, item
-> num_args
, item
-> args
);
1160 jvm_generate_push_float(p
, item
-> real
, item
-> result
-> size
);
1163 gen_error("push_item: unk mode %i", item
-> mode
);
1169 jvm_generate_logical_not(gen_proc_t
* p
)
1171 int label_done
= jvm_new_label_id(p
);
1172 int label_false
= jvm_new_label_id(p
);
1173 char * label_name_done
= jvm_get_label_name(label_done
);
1174 char * label_name_false
= jvm_get_label_name(label_false
);
1176 jvm_generate(p
, 1, 0, "ifne %s", label_name_false
);
1177 jvm_generate(p
, 0, 1, "iconst_1");
1178 jvm_generate(p
, 0, 0, "goto %s", label_name_done
);
1179 jvm_generate_label(p
, label_false
);
1180 jvm_generate(p
, 0, 1, "iconst_0");
1181 jvm_generate_label(p
, label_done
);
1185 jvm_generate_abs(gen_proc_t
* p
, char prefix
)
1187 char t
= jvm_get_type_of_prefix(prefix
);
1188 int cell_size
= jvm_cell_size_for_postfix(prefix
);
1189 jvm_generate(p
, cell_size
, cell_size
, "invokestatic java/lang/Math/abs(%c)%c", t
, t
);
1193 jvm_generate_compare_op(gen_proc_t
* p
, char prefix
, int op
)
1195 int label_true
= jvm_new_label_id(p
);
1196 int label_done
= jvm_new_label_id(p
);
1197 char * label_name_true
= jvm_get_label_name(label_true
);
1198 char * label_name_done
= jvm_get_label_name(label_done
);
1199 int cell_size
= 2 * jvm_cell_size_for_postfix(prefix
);
1201 assert(prefix
== 'i' || prefix
== 'a');
1203 const char * cmpop
= "";
1225 gen_error("jvm_generate_compare_op: wat");
1229 jvm_generate(p
, cell_size
, 0, "if_%ccmp%s %s", prefix
, cmpop
, label_name_true
);
1230 jvm_generate(p
, 0, 1, "iconst_0");
1231 jvm_generate(p
, 0, 0, "goto %s", label_name_done
);
1232 jvm_generate_label(p
, label_true
);
1233 jvm_generate(p
, 0, 1, "iconst_1");
1234 jvm_generate_label(p
, label_done
);
1238 jvm_generate_operator(gen_proc_t
* p
, char prefix
, int op
)
1240 int cell_size
= jvm_cell_size_for_postfix(prefix
);
1243 case OP_UNARY_MINUS
:
1244 jvm_generate(p
, cell_size
, cell_size
, "%cneg", prefix
);
1246 case OP_BITWISE_NOT
:
1247 jvm_generate_push_int(p
, -1);
1248 jvm_generate(p
, 2 * cell_size
, cell_size
, "%cxor", prefix
);
1251 jvm_generate_logical_not(p
);
1254 jvm_generate_abs(p
, prefix
);
1258 jvm_generate(p
, 2 * cell_size
, cell_size
, "%cadd", prefix
);
1261 jvm_generate(p
, 2 * cell_size
, cell_size
, "%csub", prefix
);
1264 jvm_generate(p
, 2 * cell_size
, cell_size
, "%cmul", prefix
);
1267 jvm_generate(p
, 2 * cell_size
, cell_size
, "%cdiv", prefix
);
1270 jvm_generate(p
, 2 * cell_size
, cell_size
, "%crem", prefix
);
1272 case OP_BITWISE_AND
:
1273 jvm_generate(p
, 2 * cell_size
, cell_size
, "%cand", prefix
);
1275 case OP_BITWISE_XOR
:
1276 jvm_generate(p
, 2 * cell_size
, cell_size
, "%cxor", prefix
);
1279 jvm_generate(p
, 2 * cell_size
, cell_size
, "%cor", prefix
);
1288 jvm_generate_compare_op(p
, prefix
, op
);
1291 gen_error("jvm_generate_operator: unk op %i", op
);
1297 jvm_generate_logical_or(gen_proc_t
* p
, oberon_expr_t
* a
, oberon_expr_t
* b
)
1299 int label_calc_b
= jvm_new_label_id(p
);
1300 int label_done
= jvm_new_label_id(p
);
1301 char * label_name_calc_b
= jvm_get_label_name(label_calc_b
);
1302 char * label_name_done
= jvm_get_label_name(label_done
);
1304 /* a OR b -- если a, то TRUE, иначе b */
1307 jvm_generate(p
, 1, 0, "ifne %s", label_name_calc_b
);
1308 jvm_generate(p
, 0, 1, "iconst_1");
1309 jvm_generate(p
, 0, 0, "goto %s", label_name_done
);
1310 jvm_generate_label(p
, label_calc_b
);
1312 jvm_generate_label(p
, label_done
);
1316 jvm_generate_logical_and(gen_proc_t
* p
, oberon_expr_t
* a
, oberon_expr_t
* b
)
1318 int label_false
= jvm_new_label_id(p
);
1319 int label_done
= jvm_new_label_id(p
);
1320 char * label_name_false
= jvm_get_label_name(label_false
);
1321 char * label_name_done
= jvm_get_label_name(label_done
);
1323 /* a AND b -- если a, то b, иначе FALSE */
1326 jvm_generate(p
, 1, 0, "ifne %s", label_name_false
);
1328 jvm_generate(p
, 0, 0, "goto %s", label_name_done
);
1329 jvm_generate_label(p
, label_false
);
1330 jvm_generate(p
, 0, 1, "iconst_0");
1331 jvm_generate_label(p
, label_done
);
1335 push_operator(gen_proc_t
* p
, oberon_oper_t
* oper
)
1337 char prefix
= jvm_get_prefix(oper
-> result
);
1338 int op
= oper
-> op
;
1341 case OP_UNARY_MINUS
:
1342 case OP_BITWISE_NOT
:
1345 push_expr(p
, oper
-> left
);
1346 jvm_generate_operator(p
, prefix
, op
);
1354 case OP_BITWISE_AND
:
1355 case OP_BITWISE_XOR
:
1364 push_expr(p
, oper
-> left
);
1365 push_expr(p
, oper
-> right
);
1366 jvm_generate_operator(p
, prefix
, op
);
1370 jvm_generate_logical_or(p
, oper
-> left
, oper
-> right
);
1373 jvm_generate_logical_and(p
, oper
-> left
, oper
-> right
);
1376 gen_error("push_oper: unk op %i", op
);
1382 push_expr(gen_proc_t
* p
, oberon_expr_t
* expr
)
1386 push_item(p
, (oberon_item_t
*) expr
);
1390 push_operator(p
, (oberon_oper_t
*) expr
);
1395 store_expr(gen_proc_t
* p
, oberon_expr_t
* dst
, oberon_expr_t
* src
)
1397 assert(dst
-> is_item
);
1398 oberon_item_t
* item
= (oberon_item_t
*) dst
;
1400 if(dst
-> result
-> class == OBERON_TYPE_ARRAY
1401 || src
-> result
-> class == OBERON_TYPE_ARRAY
)
1405 jvm_generate_copy_array(p
, dst
-> result
);
1407 else if(dst
-> result
-> class == OBERON_TYPE_RECORD
1408 || src
-> result
-> class == OBERON_TYPE_RECORD
)
1412 jvm_generate_copy_record(p
, dst
-> result
);
1414 else switch(item
-> mode
)
1418 jvm_generate_store(p
, src
-> result
, item
-> var
-> gen_var
);
1422 char postfix
= jvm_get_postfix(src
-> result
);
1423 int cell_size
= jvm_cell_size_for_postfix(postfix
);
1424 push_item(p
, item
-> parent
);
1425 push_expr(p
, item
-> args
);
1427 jvm_generate(p
, 1 + 1 + cell_size
, 0, "%castore", postfix
);
1430 push_item(p
, item
-> parent
);
1432 jvm_generate_store(p
, src
-> result
, item
-> var
-> gen_var
);
1435 gen_error("store_expr: unk mode %i", item
-> mode
);
1441 oberon_generate_assign(oberon_context_t
* ctx
, oberon_expr_t
* src
, oberon_expr_t
* dst
)
1446 m
= ctx
-> mod
-> gen_mod
;
1447 p
= m
-> class -> p
;
1449 store_expr(p
, dst
, src
);
1453 oberon_generate_code(oberon_context_t
* ctx
)
1455 printf("generate code\n");
1459 oberon_generator_dump(oberon_context_t
* ctx
, char * path
)
1461 printf("jit: dump code\n");
1465 oberon_generator_get_procedure(oberon_context_t
* ctx
, const char * name
)
1467 printf("jit: get pointer to procedure %s\n", name
);
1472 oberon_generator_get_var(oberon_context_t
* ctx
, const char * name
)
1474 printf("jit: get pointer to var %s\n", name
);