79da2b9f68fac681b5624a512508c7228702eeb1
11 #include "../../oberon-internals.h"
12 #include "../../generator.h"
13 #include "generator-jvm.h"
14 #include "generator-jvm-abi.h"
15 #include "generator-jvm-asm.h"
16 #include "generator-jvm-basic.h"
19 push_item(gen_proc_t
* p
, oberon_item_t
* item
);
22 jvm_generate_new(gen_proc_t
* p
, oberon_type_t
* type
, int num
);
25 jvm_generate_cast_prefix(gen_proc_t
* p
, char prefix
, char postfix
)
27 if((prefix
== 'b' || prefix
== 's') && (postfix
= 'l' || postfix
== 'd'))
37 if((prefix
== 'l' || prefix
== 'd') && (postfix
== 'b' || postfix
== 's'))
39 jvm_generate(p
, 2, 1, "%c2i", prefix
);
43 int from_cell_size
= jvm_cell_size_for_postfix(prefix
);
44 int to_cell_size
= jvm_cell_size_for_postfix(postfix
);
45 jvm_generate(p
, from_cell_size
, to_cell_size
, "%c2%c", prefix
, postfix
);
49 jvm_generate_cast_type(gen_proc_t
* p
, oberon_type_t
* from
, oberon_type_t
* to
)
51 if(to
-> class == OBERON_TYPE_RECORD
|| to
-> class == OBERON_TYPE_POINTER
)
53 if(to
-> class == OBERON_TYPE_POINTER
&& to
-> base
-> class == OBERON_TYPE_RECORD
)
55 char * full_name
= jvm_get_class_full_name(to
);
56 jvm_generate(p
, 1, 1, "checkcast %s", full_name
);
61 char prefix
= jvm_get_prefix(from
);
62 char postfix
= jvm_get_postfix(to
);
63 jvm_generate_cast_prefix(p
, prefix
, postfix
);
68 jvm_generate_hard_cast_type(gen_proc_t
* p
, oberon_type_t
* from
, oberon_type_t
* to
)
70 if(from
-> class == OBERON_TYPE_REAL
71 && (to
-> class == OBERON_TYPE_INTEGER
|| to
-> class == OBERON_TYPE_SYSTEM_BYTE
))
73 char postfix
= jvm_get_postfix(to
);
76 jvm_generate(p
, 1, 1, "invokestatic java/lang/Float/floatToRawIntBits(F)I");
77 jvm_generate_cast_prefix(p
, 'i', postfix
);
81 jvm_generate(p
, 2, 2, "invokestatic java/lang/Double/doubleToRawIntBits(D)J");
82 jvm_generate_cast_prefix(p
, 'l', postfix
);
85 else if((from
-> class == OBERON_TYPE_INTEGER
|| from
-> class == OBERON_TYPE_SYSTEM_BYTE
)
86 && to
-> class == OBERON_TYPE_REAL
)
88 char prefix
= jvm_get_prefix(from
);
91 jvm_generate_cast_prefix(p
, prefix
, 'i');
92 jvm_generate(p
, 1, 1, "invokestatic java/lang/Float/intBitsToFloat(I)F");
96 jvm_generate_cast_prefix(p
, prefix
, 'l');
97 jvm_generate(p
, 2, 2, "invokestatic java/lang/Double/longBitsToDouble(J)D");
102 jvm_generate_cast_type(p
, from
, to
);
107 check_index(gen_proc_t
* p
, oberon_type_t
* index_type
)
109 // TODO проверка валидности границ
110 char prefix
= jvm_get_prefix(index_type
);
111 jvm_generate_cast_prefix(p
, prefix
, 'i');
115 * Генерирует код для инициализации массива со статическим базовым типом
120 jvm_generate_array_initialization(gen_proc_t
* p
, oberon_type_t
* arr
)
123 oberon_type_t
* base
= arr
;
124 while(base
-> class == OBERON_TYPE_ARRAY
)
130 if(base
-> class != OBERON_TYPE_RECORD
)
132 jvm_generate(p
, 1, 0, "pop");
144 reg_dst
= jvm_alloc_register_untyped(p
-> rf
, false);
145 jvm_generate(p
, 1, 0, "astore %i", reg_dst
);
148 * Входящие параметры заграблены.
149 * Теперь генерируем эквивалентный код:
151 * int len = dst.length
156 * dst[i, ...] = new record;
161 * Где "..." такой же код (начало и конец) для следующей размерности.
164 for(int i
= 0; i
< dim
; i
++)
166 loop
[i
].reg_index
= jvm_alloc_register_untyped(p
-> rf
, false);
167 loop
[i
].reg_length
= jvm_alloc_register_untyped(p
-> rf
, false);
168 loop
[i
].start
= jvm_new_label_id(p
);
169 loop
[i
].end
= jvm_new_label_id(p
);
171 jvm_generate(p
, 0, 1, "iconst_0");
172 jvm_generate(p
, 1, 0, "istore %i", loop
[i
].reg_index
);
174 jvm_generate(p
, 0, 1, "aload %i", reg_dst
);
175 jvm_generate(p
, 1, 1, "arraylength");
176 jvm_generate(p
, 1, 0, "istore %i", loop
[i
].reg_length
);
178 /* if(i >= len) goto end; */
179 jvm_generate_label(p
, loop
[i
].start
);
180 jvm_generate(p
, 0, 1, "iload %i", loop
[i
].reg_index
);
181 jvm_generate(p
, 0, 1, "iload %i", loop
[i
].reg_length
);
182 jvm_generate(p
, 2, 0, "if_icmpge L%i", loop
[i
].end
);
185 jvm_generate(p
, 0, 1, "aload %i", reg_dst
);
186 jvm_generate(p
, 0, 1, "iload %i", loop
[0].reg_index
);
187 for(int i
= 1; i
< dim
; i
++)
189 jvm_generate(p
, 2, 1, "aaload");
190 jvm_generate(p
, 0, 1, "iload %i", loop
[i
].reg_index
);
192 jvm_generate_new(p
, base
, 0);
193 jvm_generate(p
, 3, 0, "aastore");
195 for(int i
= dim
- 1; i
>= 0; i
--)
197 jvm_generate(p
, 0, 0, "iinc %i 1", loop
[i
].reg_index
);
198 jvm_generate(p
, 0, 0, "goto L%i", loop
[i
].start
);
199 jvm_generate_label(p
, loop
[i
].end
);
204 jvm_generate_new(gen_proc_t
* p
, oberon_type_t
* type
, int num
)
209 oberon_type_t
* base
;
211 switch(type
-> class)
213 case OBERON_TYPE_INTEGER
:
214 case OBERON_TYPE_BOOLEAN
:
215 case OBERON_TYPE_PROCEDURE
:
216 case OBERON_TYPE_REAL
:
217 case OBERON_TYPE_POINTER
:
218 gen_error("jvm_generate_new_static: static alocation not allowed");
220 case OBERON_TYPE_RECORD
:
222 cname
= jvm_get_class_full_name(type
);
223 jvm_generate(p
, 0, 1, "new %s", cname
);
224 jvm_generate(p
, 1, 2, "dup");
225 jvm_generate(p
, 1, 0, "invokespecial %s/<init>()V", cname
);
227 case OBERON_TYPE_ARRAY
:
230 desc
= jvm_get_descriptor(type
);
231 while(base
-> class == OBERON_TYPE_ARRAY
)
235 assert(base
-> size
== 0);
240 assert(base
-> size
> 0);
241 jvm_generate_push_int(p
, base
-> size
);
248 jvm_generate(p
, dim
, 1, "multianewarray %s %i", desc
, dim
);
249 jvm_generate(p
, 1, 2, "dup");
250 jvm_generate_array_initialization(p
, type
);
253 gen_error("jvm_generate_new_static: unk type class %i", type
-> class);
259 * Генерирует код для копирования полей из первой записи во вторую.
260 * ( aref_dst aref_src -- )
265 jvm_generate_copy_record(gen_proc_t
* p
, oberon_type_t
* rec
)
267 assert(rec
-> class == OBERON_TYPE_RECORD
);
268 char * desc
= jvm_get_descriptor(rec
);
269 char * cname
= jvm_get_class_full_name(rec
);
270 jvm_generate(p
, 1 + 1, 0, "invokestatic %s/$COPY$(%s%s)V", cname
, desc
, desc
);
274 * Генерирует кода для копирования массивов.
275 * ( aref_dst aref_src -- )
280 jvm_generate_copy_array(gen_proc_t
* p
, oberon_type_t
* arr
)
283 oberon_type_t
* base
= arr
;
284 while(base
-> class == OBERON_TYPE_ARRAY
)
297 int reg_dst
= jvm_alloc_register_untyped(p
-> rf
, false);
298 int reg_src
= jvm_alloc_register_untyped(p
-> rf
, false);
299 jvm_generate(p
, 1, 0, "astore %i", reg_src
);
300 jvm_generate(p
, 1, 0, "astore %i", reg_dst
);
303 * Входящие параметры заграблены.
304 * Теперь генерируем эквивалентный код:
306 * int len = src.length
311 * copy from src[i, ...] to dst[i, ...];
316 * Где "..." такой же код (начало и конец) для следующей размерности.
319 for(int i
= 0; i
< dim
; i
++)
321 loop
[i
].reg_index
= jvm_alloc_register_untyped(p
-> rf
, false);
322 loop
[i
].reg_length
= jvm_alloc_register_untyped(p
-> rf
, false);
323 loop
[i
].start
= jvm_new_label_id(p
);
324 loop
[i
].end
= jvm_new_label_id(p
);
326 jvm_generate(p
, 0, 1, "iconst_0");
327 jvm_generate(p
, 1, 0, "istore %i", loop
[i
].reg_index
);
329 jvm_generate(p
, 0, 1, "aload %i", reg_src
);
330 jvm_generate(p
, 1, 1, "arraylength");
331 jvm_generate(p
, 1, 0, "istore %i", loop
[i
].reg_length
);
333 /* if(i >= len) goto end; */
334 jvm_generate_label(p
, loop
[i
].start
);
335 jvm_generate(p
, 0, 1, "iload %i", loop
[i
].reg_index
);
336 jvm_generate(p
, 0, 1, "iload %i", loop
[i
].reg_length
);
337 jvm_generate(p
, 2, 0, "if_icmpge L%i", loop
[i
].end
);
340 if(base
-> class == OBERON_TYPE_RECORD
)
342 /* Получаем записи по индексам ( -- dst src ) */
344 jvm_generate(p
, 0, 1, "aload %i", reg_dst
);
345 for(int i
= 0; i
< dim
; i
++)
347 jvm_generate(p
, 0, 1, "iload %i", loop
[i
].reg_index
);
348 jvm_generate(p
, 2, 1, "aaload");
351 jvm_generate(p
, 0, 1, "aload %i", reg_src
);
352 for(int i
= 0; i
< dim
; i
++)
354 jvm_generate(p
, 0, 1, "iload %i", loop
[i
].reg_index
);
355 jvm_generate(p
, 2, 1, "aaload");
358 /* Копируем записи ( dst src -- ) */
359 jvm_generate_copy_record(p
, base
);
363 char postfix
= jvm_get_postfix(base
);
364 int cell_size
= jvm_cell_size_for_postfix(postfix
);
366 /* Получаем массивы и индексы ( -- dst i src i ) */
368 jvm_generate(p
, 0, 1, "aload %i", reg_dst
);
369 jvm_generate(p
, 0, 1, "iload %i", loop
[0].reg_index
);
370 for(int i
= 1; i
< dim
; i
++)
372 jvm_generate(p
, 2, 1, "aaload");
373 jvm_generate(p
, 0, 1, "iload %i", loop
[i
].reg_index
);
376 jvm_generate(p
, 0, 1, "aload %i", reg_src
);
377 jvm_generate(p
, 0, 1, "iload %i", loop
[0].reg_index
);
378 for(int i
= 1; i
< dim
; i
++)
380 jvm_generate(p
, 2, 1, "aaload");
381 jvm_generate(p
, 0, 1, "iload %i", loop
[i
].reg_index
);
384 /* Копируем значения ( dst i src i -- ) */
385 jvm_generate(p
, 2, cell_size
, "%caload", postfix
);
386 jvm_generate(p
, 2 + cell_size
, 0, "%castore", postfix
);
389 for(int i
= dim
- 1; i
>= 0; i
--)
391 jvm_generate(p
, 0, 0, "iinc %i 1", loop
[i
].reg_index
);
392 jvm_generate(p
, 0, 0, "goto L%i", loop
[i
].start
);
393 jvm_generate_label(p
, loop
[i
].end
);
398 jvm_generate_push_procedure_pointer(gen_proc_t
* p
, oberon_object_t
* proc
)
400 char * full_name
= jvm_get_field_full_name_safe(proc
);
401 char * desc
= jvm_get_descriptor(proc
-> type
);
402 jvm_generate(p
, 0, 1, "getstatic %s/pointer %s", full_name
, desc
);
406 oberon_generator_init_context(oberon_context_t
* ctx
)
408 gen_context_t
* gen_context
= GC_MALLOC(sizeof *gen_context
);
409 memset(gen_context
, 0, sizeof *gen_context
);
411 ctx
-> gen_context
= gen_context
;
412 gen_context
-> dir
= ".";
416 oberon_generator_destroy_context(oberon_context_t
* ctx
)
421 oberon_generate_procedure_class(const char * dir
, oberon_type_t
* proc
)
426 struct gen_class
* class;
428 cname
= jvm_get_class_full_name(proc
);
429 class = jvm_create_class(dir
, cname
);
432 fprintf(fp
, ".source SYSTEM\n");
433 fprintf(fp
, ".class public abstract %s\n", cname
);
434 fprintf(fp
, ".super java/lang/Object\n\n");
436 fprintf(fp
, ".method <init>()V\n");
437 fprintf(fp
, " aload_0\n");
438 fprintf(fp
, " invokespecial java/lang/Object/<init>()V\n");
439 fprintf(fp
, " return\n");
440 fprintf(fp
, ".end method\n\n");
442 signature
= jvm_get_procedure_signature(proc
);
444 fprintf(fp
, ".method public abstract invoke%s\n", signature
);
445 fprintf(fp
, ".end method\n\n");
447 jvm_destroy_class(class);
451 oberon_generate_procedure_pointer_class(const char * dir
, oberon_object_t
* proc
)
458 struct gen_class
* class;
460 cname
= jvm_get_field_full_name_safe(proc
);
461 class = jvm_create_class(dir
, cname
);
462 abscname
= jvm_get_class_full_name(proc
-> type
);
463 absdesc
= jvm_get_descriptor(proc
-> type
);
466 fprintf(fp
, ".source %s\n", proc
-> module
-> name
);
467 fprintf(fp
, ".class public %s\n", cname
);
468 fprintf(fp
, ".super %s\n\n", abscname
);
470 fprintf(fp
, ".field public static pointer %s\n\n", absdesc
);
472 fprintf(fp
, ".method private <init>()V\n");
473 fprintf(fp
, " aload_0\n");
474 fprintf(fp
, " invokespecial %s/<init>()V\n", abscname
);
475 fprintf(fp
, " return\n");
476 fprintf(fp
, ".end method\n\n");
478 fprintf(fp
, ".method static <clinit>()V\n");
479 fprintf(fp
, " .limit stack 2\n");
480 fprintf(fp
, " new %s\n", cname
);
481 fprintf(fp
, " dup\n");
482 fprintf(fp
, " invokespecial %s/<init>()V\n", cname
);
483 fprintf(fp
, " putstatic %s/pointer %s\n", cname
, absdesc
);
484 fprintf(fp
, " return\n");
485 fprintf(fp
, ".end method\n\n");
487 signature
= jvm_get_procedure_signature(proc
-> type
);
489 gen_proc_t
* p
= jvm_create_proc(class);
490 jvm_generate_function_header(p
, "public", "invoke", signature
);
491 jvm_alloc_register_untyped(p
-> rf
, false);
494 int num
= proc
-> type
-> num_decl
;
495 oberon_object_t
* param
= proc
-> type
-> decl
;
496 for(int i
= 0; i
< num
; i
++)
498 gen_type_t
* t
= param
-> type
-> gen_type
;
499 if(param
-> class == OBERON_CLASS_VAR_PARAM
)
501 int reg
= jvm_alloc_register_untyped(p
-> rf
, true);
502 jvm_generate(p
, 0, 1, "aload %i", reg
);
503 jvm_generate(p
, 0, 1, "iload %i", reg
+ 1);
507 int reg
= jvm_alloc_register_untyped(p
-> rf
, t
-> wide
);
508 jvm_generate(p
, 0, t
-> cell_size
, "%cload %i", t
-> prefix
, reg
);
510 use_size
+= t
-> cell_size
;
511 param
= param
-> next
;
514 char * full_name
= jvm_get_field_full_name(proc
);
515 int cell_size
= jvm_cell_size_for_type(proc
-> type
-> base
);
516 jvm_generate(p
, use_size
, cell_size
, "invokestatic %s%s", full_name
, signature
);
518 if(proc
-> type
-> base
-> class == OBERON_TYPE_NOTYPE
)
520 jvm_generate(p
, 0, 0, "return");
524 char prefix
= jvm_get_prefix(proc
-> type
-> base
);
525 jvm_generate(p
, cell_size
, 0, "%creturn", prefix
);
528 jvm_generate_function_end(p
);
530 jvm_destroy_class(class);
534 oberon_generate_record_class(const char * dir
, gen_module_t
* m
, oberon_type_t
* rec
)
537 struct gen_class
* class;
539 /* Устанавливаем новоый id */
540 rec
-> gen_type
-> rec_id
= m
-> rec_id
;
543 cname
= jvm_get_class_full_name(rec
);
544 class = jvm_create_class(dir
, cname
);
546 fprintf(class -> fp
, ".source %s\n", rec
-> module
-> name
);
547 fprintf(class -> fp
, ".class public %s\n", cname
);
549 if(rec
-> base
== NULL
)
551 fprintf(class -> fp
, ".super java/lang/Object\n\n");
555 class -> base
= rec
-> base
-> gen_type
-> class;
556 fprintf(class -> fp
, ".super %s\n\n", class -> base
-> full_name
);
559 rec
-> gen_type
-> class = class;
563 oberon_generator_init_type(oberon_context_t
* ctx
, oberon_type_t
* type
)
565 gen_type_t
* t
= GC_MALLOC(sizeof *t
);
566 memset(t
, 0, sizeof *t
);
567 type
-> gen_type
= t
;
570 c
= ctx
-> gen_context
;
573 switch(type
-> class)
575 case OBERON_TYPE_NOTYPE
:
576 case OBERON_TYPE_INTEGER
:
577 case OBERON_TYPE_BOOLEAN
:
578 case OBERON_TYPE_ARRAY
:
579 case OBERON_TYPE_POINTER
:
580 case OBERON_TYPE_REAL
:
581 case OBERON_TYPE_CHAR
:
582 case OBERON_TYPE_STRING
:
583 case OBERON_TYPE_SET
:
584 case OBERON_TYPE_NIL
:
585 case OBERON_TYPE_SYSTEM_BYTE
:
586 case OBERON_TYPE_SYSTEM_PTR
:
588 case OBERON_TYPE_RECORD
:
589 m
= type
-> module
-> gen_mod
;
590 oberon_generate_record_class(c
-> dir
, m
, type
);
592 case OBERON_TYPE_PROCEDURE
:
593 oberon_generate_procedure_class(c
-> dir
, type
);
596 gen_error("oberon_generator_init_type: unk calss %i", type
-> class);
600 if(type
-> class != OBERON_TYPE_NOTYPE
)
602 t
-> wide
= jvm_is_wide_type(type
);
603 t
-> prefix
= jvm_get_prefix(type
);
604 t
-> postfix
= jvm_get_postfix(type
);
607 t
-> cell_size
= jvm_cell_size_for_type(type
);
609 if(type
-> class != OBERON_TYPE_NIL
)
611 t
-> desc
= jvm_get_descriptor(type
);
616 oberon_generator_init_record(oberon_context_t
* ctx
, oberon_type_t
* rec
)
618 struct gen_class
* class;
619 class = rec
-> gen_type
-> class;
621 int num
= rec
-> num_decl
;
622 oberon_object_t
* field
= rec
-> decl
;
623 for(int i
= 0; i
< num
; i
++)
625 jvm_generate_var(field
-> gen_var
);
626 field
= field
-> next
;
629 /* Стандартный конструктор класса */
630 /* Инициализирует внутренние статические записи и массивы */
631 gen_proc_t
* p
= jvm_create_proc(class);
632 jvm_generate_function_header(p
, "public", "<init>", "()V");
633 jvm_alloc_register_untyped(p
-> rf
, false);
634 jvm_generate(p
, 0, 1, "aload_0");
637 jvm_generate(p
, 1, 0, "invokespecial %s/<init>()V", class -> base
-> full_name
);
641 jvm_generate(p
, 1, 0, "invokespecial java/lang/Object/<init>()V");
643 num
= rec
-> num_decl
;
645 for(int i
= 0; i
< num
; i
++)
647 jvm_generate(p
, 0, 1, "aload_0");
648 jvm_generate_var_initialization(p
, field
-> gen_var
);
650 if(field
-> type
-> class == OBERON_TYPE_RECORD
651 || field
-> type
-> class == OBERON_TYPE_ARRAY
)
653 jvm_generate(p
, 0, 1, "aload_0");
654 jvm_generate_ldst_prepare(p
, field
-> gen_var
);
655 jvm_generate_new(p
, field
-> type
, 0);
656 jvm_generate_store(p
, field
-> gen_var
);
658 field
= field
-> next
;
660 jvm_generate(p
, 0, 0, "return");
661 jvm_generate_function_end(p
);
663 /* Метод для копирования полей класса */
664 /* reg0 == src -> reg1 == dst */
665 p
= jvm_create_proc(class);
666 char * signature
= new_string("(%s%s)V", rec
-> gen_type
-> desc
, rec
-> gen_type
-> desc
);
667 jvm_generate_function_header(p
, "public static", "$COPY$", signature
);
669 gen_var_t
* copy_dst
= jvm_create_function_var(p
, JVM_STORAGE_REGISTER
, "dst", rec
-> gen_type
);
670 gen_var_t
* copy_src
= jvm_create_function_var(p
, JVM_STORAGE_REGISTER
, "src", rec
-> gen_type
);
671 jvm_generate_var(copy_dst
);
672 jvm_generate_var(copy_src
);
673 jvm_generate_var_initialization(p
, copy_dst
);
674 jvm_generate_var_initialization(p
, copy_src
);
678 jvm_generate_load(p
, copy_dst
);
679 jvm_generate_load(p
, copy_src
);
680 jvm_generate_copy_record(p
, rec
-> base
);
683 num
= rec
-> num_decl
;
685 for(int i
= 0; i
< num
; i
++)
687 if(field
-> type
-> class == OBERON_TYPE_RECORD
)
689 jvm_generate_load(p
, copy_dst
);
690 jvm_generate_load(p
, field
-> gen_var
);
691 jvm_generate_load(p
, copy_src
);
692 jvm_generate_load(p
, field
-> gen_var
);
693 jvm_generate_copy_record(p
, field
-> type
);
695 else if(field
-> type
-> class == OBERON_TYPE_ARRAY
)
697 jvm_generate_load(p
, copy_dst
);
698 jvm_generate_load(p
, field
-> gen_var
);
699 jvm_generate_load(p
, copy_src
);
700 jvm_generate_load(p
, field
-> gen_var
);
701 jvm_generate_copy_array(p
, field
-> type
);
705 jvm_generate_load(p
, copy_dst
);
706 jvm_generate_ldst_prepare(p
, field
-> gen_var
);
707 jvm_generate_load(p
, copy_src
);
708 jvm_generate_load(p
, field
-> gen_var
);
709 jvm_generate_store(p
, field
-> gen_var
);
711 field
= field
-> next
;
713 jvm_generate(p
, 0, 0, "return");
714 jvm_generate_function_end(p
);
716 jvm_destroy_class(class);
720 oberon_generator_init_var(oberon_context_t
* ctx
, oberon_object_t
* var
)
723 m
= ctx
-> mod
-> gen_mod
;
725 struct gen_class
* class;
729 struct gen_class
* c
;
730 char * name
= var
-> name
;
731 gen_type_t
* t
= var
-> type
-> gen_type
;
736 gen_error("uninitialized type class %i", var
-> type
-> class);
741 case OBERON_CLASS_VAR_PARAM
:
742 p
= var
-> parent
-> gen_proc
;
743 var
-> gen_var
= jvm_create_function_var(p
, JVM_STORAGE_FRAME_PARAM_VARPTR
, name
, t
);
745 case OBERON_CLASS_PARAM
:
746 p
= var
-> parent
-> gen_proc
;
747 var
-> gen_var
= jvm_create_function_var(p
, JVM_STORAGE_FRAME_PARAM_VAR
, name
, t
);
749 case OBERON_CLASS_FIELD
:
750 c
= var
-> parent_type
-> gen_type
-> class;
751 var
-> gen_var
= jvm_create_class_var(c
, JVM_STORAGE_FIELD_VAR
, name
, t
);
753 case OBERON_CLASS_VAR
:
756 p
= var
-> parent
-> gen_proc
;
757 var
-> gen_var
= jvm_create_function_var(p
, JVM_STORAGE_FRAME_VAR
, name
, t
);
761 var
-> gen_var
= jvm_create_class_var(class, JVM_STORAGE_STATIC_VAR
, name
, t
);
762 jvm_generate_var(var
-> gen_var
);
766 gen_error("oberon_generator_init_var: unk var class %i", var
-> class);
772 oberon_generator_init_temp_var(oberon_context_t
* ctx
, oberon_object_t
* var
)
774 assert(var
-> class == OBERON_CLASS_VAR
);
777 m
= ctx
-> mod
-> gen_mod
;
783 t
= var
-> type
-> gen_type
;
785 var
-> gen_var
= jvm_create_function_temp_var(p
, t
);
786 jvm_generate_var(var
-> gen_var
);
787 jvm_generate_var_initialization(p
, var
-> gen_var
);
791 oberon_generator_init_proc(oberon_context_t
* ctx
, oberon_object_t
* proc
)
793 struct gen_class
* class = proc
-> module
-> gen_mod
-> class;
794 proc
-> gen_proc
= jvm_create_proc(class);
795 proc
-> gen_proc
-> full_name
= jvm_get_field_full_name_safe(proc
);
796 jvm_create_static_links(proc
);
800 oberon_generator_init_module(oberon_context_t
* ctx
, oberon_module_t
* mod
)
802 gen_module_t
* m
= GC_MALLOC(sizeof *m
);
803 memset(m
, 0, sizeof *m
);
807 c
= ctx
-> gen_context
;
809 struct gen_class
* class;
810 class = jvm_create_class(c
-> dir
, mod
-> name
);
812 fprintf(class -> fp
, ".source %s\n", mod
-> name
);
813 fprintf(class -> fp
, ".class %s\n", mod
-> name
);
814 fprintf(class -> fp
, ".super java/lang/Object\n\n");
816 fprintf(class -> fp
, ".field private static $INITIALIZED$ Z\n\n");
824 oberon_generator_fini_module(oberon_module_t
* mod
)
826 jvm_destroy_class(mod
-> gen_mod
-> class);
830 push_expr(gen_proc_t
* p
, oberon_expr_t
* expr
);
833 oberon_generate_static_initialization(gen_proc_t
* p
, oberon_object_t
* x
)
835 if(x
-> type
-> class == OBERON_TYPE_ARRAY
836 || x
-> type
-> class == OBERON_TYPE_RECORD
)
838 jvm_generate_ldst_prepare(p
, x
-> gen_var
);
839 jvm_generate_new(p
, x
-> type
, 0);
840 jvm_generate_store(p
, x
-> gen_var
);
845 oberon_generate_begin_module(oberon_context_t
* ctx
)
849 struct gen_class
* class;
851 class = ctx
-> mod
-> gen_mod
-> class;
853 p
= jvm_create_proc(class);
854 jvm_generate_function_header(p
, "public static", "BEGIN", "()V");
856 label_cont
= jvm_new_label_id(p
);
857 jvm_generate(p
, 0, 1, "getstatic %s/$INITIALIZED$ Z", class -> full_name
);
858 jvm_generate(p
, 1, 0, "ifeq L%i", label_cont
);
859 jvm_generate(p
, 0, 0, "return");
860 jvm_generate_label(p
, label_cont
);
862 jvm_generate(p
, 0, 1, "iconst_1");
863 jvm_generate(p
, 1, 0, "putstatic %s/$INITIALIZED$ Z", class -> full_name
);
865 /* Инициализация переменных объявленных в модуле */
866 oberon_object_t
* x
= ctx
-> mod
-> decl
-> list
-> next
;
869 if(x
-> class == OBERON_CLASS_MODULE
)
871 if(!x
-> module
-> intrinsic
)
873 jvm_generate(p
, 0, 0, "invokestatic %s/BEGIN()V", x
-> module
-> gen_mod
-> class -> full_name
);
876 else if(x
-> class == OBERON_CLASS_VAR
)
878 jvm_generate_var_initialization(p
, x
-> gen_var
);
879 oberon_generate_static_initialization(p
, x
);
887 oberon_generate_end_module(oberon_context_t
* ctx
)
889 struct gen_class
* class = ctx
-> mod
-> gen_mod
-> class;
890 gen_proc_t
* p
= class -> p
;
892 jvm_generate(p
, 0, 0, "return");
893 jvm_generate_function_end(class -> p
);
895 p
= jvm_create_proc(class);
896 jvm_generate_function_header(p
, "private", "<init>", "()V");
897 jvm_alloc_register_untyped(p
-> rf
, false);
898 jvm_generate(p
, 0, 1, "aload_0");
899 jvm_generate(p
, 1, 0, "invokespecial java/lang/Object/<init>()V");
900 jvm_generate(p
, 0, 0, "return");
901 jvm_generate_function_end(class -> p
);
905 * Генерирует код для получения размера измерения массива
906 * Аналог Обероновского LEN(v, n); где n = 0 - первое измерение.
911 jvm_generate_array_len(gen_proc_t
* p
, int dim
)
915 jvm_generate(p
, 0, 1, "iconst_0");
916 jvm_generate(p
, 2, 1, "aaload");
919 jvm_generate(p
, 1, 1, "arraylength");
923 jvm_generate_array_duplicate_and_replace(gen_proc_t
* p
, gen_var_t
* v
, oberon_type_t
* arr
)
925 jvm_generate_ldst_prepare(p
, v
);
928 oberon_type_t
* base
= arr
;
929 while(base
-> class == OBERON_TYPE_ARRAY
)
931 if(base
-> size
== 0)
933 jvm_generate_load(p
, v
);
934 jvm_generate_array_len(p
, dim
);
940 jvm_generate_new(p
, arr
, dim
);
941 jvm_generate(p
, 1, 2, "dup");
942 jvm_generate_load(p
, v
);
943 jvm_generate_copy_array(p
, arr
);
944 jvm_generate_store(p
, v
);
948 jvm_generate_record_duplicate_and_replace(gen_proc_t
* p
, gen_var_t
* v
, oberon_type_t
* rec
)
950 jvm_generate_ldst_prepare(p
, v
);
951 jvm_generate_new(p
, rec
, 0);
952 jvm_generate(p
, 1, 2, "dup");
953 jvm_generate_load(p
, v
);
954 jvm_generate_copy_record(p
, rec
);
955 jvm_generate_store(p
, v
);
959 jvm_generate_local_object(gen_proc_t
* p
, oberon_object_t
* x
)
962 struct gen_class
* class;
967 // Убеждаемся что сейчас находимся в функции
973 case OBERON_CLASS_VAR_PARAM
:
974 case OBERON_CLASS_PARAM
:
975 case OBERON_CLASS_VAR
:
978 case OBERON_CLASS_CONST
:
979 case OBERON_CLASS_TYPE
:
980 case OBERON_CLASS_PROC
:
983 gen_error("jvm_generate_local_initialization: wat class %i", x
-> class);
989 jvm_generate_local_initialization(gen_proc_t
* p
, oberon_object_t
* x
)
992 struct gen_class
* class;
997 // Убеждаемся что сейчас находимся в функции
1003 case OBERON_CLASS_VAR_PARAM
:
1004 jvm_generate_var_initialization(p
, v
);
1006 case OBERON_CLASS_PARAM
:
1007 jvm_generate_var_initialization(p
, v
);
1008 if(x
-> type
-> class == OBERON_TYPE_ARRAY
)
1010 jvm_generate_array_duplicate_and_replace(p
, v
, x
-> type
);
1012 else if(x
-> type
-> class == OBERON_TYPE_RECORD
)
1014 jvm_generate_record_duplicate_and_replace(p
, v
, x
-> type
);
1017 case OBERON_CLASS_VAR
:
1018 jvm_generate_var_initialization(p
, v
);
1019 oberon_generate_static_initialization(p
, x
);
1021 case OBERON_CLASS_CONST
:
1022 case OBERON_CLASS_TYPE
:
1023 case OBERON_CLASS_PROC
:
1026 gen_error("jvm_generate_local_initialization: wat class %i", x
-> class);
1032 oberon_generate_begin_proc(oberon_context_t
* ctx
, oberon_object_t
* proc
)
1037 oberon_object_t
* var
;
1039 p
= proc
-> gen_proc
;
1043 signature
= jvm_get_local_procedure_signature(proc
);
1047 oberon_generate_procedure_pointer_class(p
-> class -> dir
, proc
);
1048 signature
= jvm_get_procedure_signature(proc
-> type
);
1051 name
= jvm_get_name(proc
);
1052 jvm_generate_function_header(p
, "public static", name
, signature
);
1056 jvm_generate_staticlinks(proc
);
1059 jvm_generate_procedure_frame(proc
);
1061 /* Создание параметров и переменных */
1062 var
= proc
-> scope
-> list
-> next
;
1065 jvm_generate_local_object(p
, var
);
1069 jvm_generate_frame_initialization(p
);
1071 /* Инициализация парамеров и переменных */
1072 var
= proc
-> scope
-> list
-> next
;
1075 jvm_generate_local_initialization(p
, var
);
1081 oberon_generate_end_proc(oberon_context_t
* ctx
)
1086 m
= ctx
-> mod
-> gen_mod
;
1087 p
= m
-> class -> p
;
1089 oberon_generate_trap(ctx
, -4);
1090 jvm_generate_function_end(p
);
1094 oberon_generator_reserve_label(oberon_context_t
* ctx
)
1100 m
= ctx
-> mod
-> gen_mod
;
1101 p
= m
-> class -> p
;
1103 l
= GC_MALLOC(sizeof *l
);
1104 memset(l
, 0, sizeof *l
);
1106 l
-> id
= jvm_new_label_id(p
);
1111 oberon_generate_label(oberon_context_t
* ctx
, gen_label_t
* l
)
1116 m
= ctx
-> mod
-> gen_mod
;
1117 p
= m
-> class -> p
;
1119 jvm_generate_label(p
, l
-> id
);
1123 oberon_generate_goto(oberon_context_t
* ctx
, gen_label_t
* l
)
1128 m
= ctx
-> mod
-> gen_mod
;
1129 p
= m
-> class -> p
;
1131 jvm_generate(p
, 0, 0, "goto L%i", l
-> id
);
1135 oberon_generate_branch(oberon_context_t
* ctx
, oberon_expr_t
* cond
, bool gotoif
, gen_label_t
* l
)
1140 m
= ctx
-> mod
-> gen_mod
;
1141 p
= m
-> class -> p
;
1147 /* переход если false */
1148 jvm_generate(p
, 1, 0, "ifeq L%i", l
-> id
);
1152 /* переход если true */
1153 jvm_generate(p
, 1, 0, "ifne L%i", l
-> id
);
1158 push_varptr(gen_proc_t
* p
, oberon_expr_t
* expr
)
1160 assert(expr
-> is_item
);
1162 switch(expr
-> item
.mode
)
1165 jvm_generate_ldst_prepare(p
, expr
-> item
.var
-> gen_var
);
1168 push_item(p
, expr
-> item
.parent
);
1169 push_expr(p
, expr
-> item
.args
);
1170 check_index(p
, expr
-> item
.args
-> result
);
1173 push_item(p
, expr
-> item
.parent
);
1174 jvm_generate_ldst_prepare(p
, expr
-> item
.var
-> gen_var
);
1177 push_varptr(p
, (oberon_expr_t
*) expr
-> item
.parent
);
1180 gen_error("push_varptr: wat %i", expr
-> item
.mode
);
1186 jvm_generate_call_proc(gen_proc_t
* p
, oberon_item_t
* desig
)
1188 assert(desig
-> var
== NULL
);
1189 assert(desig
-> mode
== MODE_CALL
);
1191 bool direct_call
= false;
1192 if(desig
-> parent
-> mode
== MODE_VAR
)
1194 if(desig
-> parent
-> var
-> class == OBERON_CLASS_PROC
)
1200 oberon_type_t
* procsig
;
1201 procsig
= desig
-> parent
-> result
;
1203 if(direct_call
== false)
1205 /* Загружаем указатель на процедуру */
1206 push_item(p
, desig
-> parent
);
1211 jvm_generate_push_static_links(p
, desig
-> parent
-> var
);
1215 int result_cells
= jvm_cell_size_for_type(procsig
-> base
);
1217 int num
= desig
-> num_args
;
1218 oberon_expr_t
* arg
= desig
-> args
;
1219 oberon_object_t
* param
= procsig
-> decl
;
1220 for(int i
= 0; i
< num
; i
++)
1222 if(param
-> class == OBERON_CLASS_VAR_PARAM
)
1225 push_varptr(p
, arg
);
1229 args_cells
+= jvm_cell_size_for_type(arg
-> result
);
1233 param
= param
-> next
;
1238 char * full_name
= jvm_get_field_full_name(desig
-> parent
-> var
);
1239 char * signature
= jvm_get_local_procedure_signature(desig
-> parent
-> var
);
1240 jvm_generate(p
, args_cells
, result_cells
, "invokestatic %s%s", full_name
, signature
);
1244 char * cname
= jvm_get_class_full_name(procsig
);
1245 char * signature
= jvm_get_procedure_signature(procsig
);
1246 jvm_generate(p
, 1 + args_cells
, result_cells
, "invokevirtual %s/invoke%s", cname
, signature
);
1251 oberon_generate_call_proc(oberon_context_t
* ctx
, oberon_expr_t
* desig
)
1253 assert(desig
-> is_item
);
1254 jvm_generate_call_proc(ctx
-> mod
-> gen_mod
-> class -> p
, (oberon_item_t
*) desig
);
1258 oberon_generate_return(oberon_context_t
* ctx
, oberon_expr_t
* expr
)
1265 m
= ctx
-> mod
-> gen_mod
;
1266 p
= m
-> class -> p
;
1271 prefix
= jvm_get_prefix(expr
-> result
);
1272 cell_size
= jvm_cell_size_for_type(expr
-> result
);
1273 jvm_generate(p
, cell_size
, 0, "%creturn", prefix
);
1277 jvm_generate(p
, 0, 0, "return");
1282 jvm_generate_expr_new_pointer(gen_proc_t
* p
, oberon_type_t
* type
, int num
, oberon_expr_t
* arg
)
1284 assert(type
-> class == OBERON_TYPE_POINTER
);
1286 for(int i
= 0; i
< num
; i
++)
1289 check_index(p
, arg
-> result
);
1293 jvm_generate_new(p
, type
-> base
, num
);
1297 push_item(gen_proc_t
* p
, oberon_item_t
* item
)
1299 switch(item
-> mode
)
1302 if(item
-> var
-> class == OBERON_CLASS_PROC
)
1304 jvm_generate_push_procedure_pointer(p
, item
-> var
);
1308 jvm_generate_load(p
, item
-> var
-> gen_var
);
1315 jvm_generate_push_int_size(p
, item
-> integer
, item
-> result
-> size
);
1318 jvm_generate_call_proc(p
, item
);
1322 char postfix
= jvm_get_postfix(item
-> result
);
1323 int cell_size
= jvm_cell_size_for_postfix(postfix
);
1324 push_item(p
, item
-> parent
);
1325 push_expr(p
, item
-> args
);
1326 check_index(p
, item
-> args
-> result
);
1327 jvm_generate(p
, 1 + 1, cell_size
, "%caload", postfix
);
1330 push_item(p
, item
-> parent
);
1331 jvm_generate_load(p
, item
-> var
-> gen_var
);
1334 /* Все объекты в jvm представляются как указатели */
1335 push_item(p
, item
-> parent
);
1338 jvm_generate(p
, 0, 1, "aconst_null");
1341 jvm_generate_expr_new_pointer(p
, item
-> result
, item
-> num_args
, item
-> args
);
1344 jvm_generate_push_float(p
, item
-> real
, item
-> result
-> size
);
1347 jvm_generate_push_string(p
, item
-> string
, item
-> result
-> size
);
1350 push_item(p
, item
-> parent
);
1351 jvm_generate_array_len(p
, item
-> integer
);
1352 jvm_generate_cast_prefix(p
, 'i', jvm_get_postfix(item
-> result
));
1355 gen_error("push_item: unk mode %i", item
-> mode
);
1361 jvm_generate_logical_not(gen_proc_t
* p
)
1363 int label_done
= jvm_new_label_id(p
);
1364 int label_false
= jvm_new_label_id(p
);
1366 jvm_generate(p
, 1, 0, "ifne L%i", label_false
);
1367 jvm_generate(p
, 0, 1, "iconst_1");
1368 jvm_generate(p
, 0, 0, "goto L%i", label_done
);
1369 jvm_generate_label(p
, label_false
);
1370 jvm_generate(p
, 0, 1, "iconst_0");
1371 jvm_generate_label(p
, label_done
);
1375 jvm_generate_abs(gen_proc_t
* p
, char prefix
)
1377 char t
= jvm_get_type_of_prefix(prefix
);
1378 int cell_size
= jvm_cell_size_for_postfix(prefix
);
1379 jvm_generate(p
, cell_size
, cell_size
, "invokestatic java/lang/Math/abs(%c)%c", t
, t
);
1383 jvm_get_compare_postfix(int op
)
1407 gen_error("jvm_generate_compare_op: wat");
1414 jvm_generate_compare_op(gen_proc_t
* p
, oberon_type_t
* t
, int op
)
1416 char prefix
= jvm_get_prefix(t
);
1417 int label_true
= jvm_new_label_id(p
);
1418 int label_done
= jvm_new_label_id(p
);
1419 int cell_size
= jvm_cell_size_for_type(t
);
1420 char * cmpop
= jvm_get_compare_postfix(op
);
1424 jvm_generate(p
, 2 * cell_size
, 1, "lcmp");
1425 jvm_generate(p
, 1, 1, "if%s L%i", cmpop
, label_true
);
1427 else if(prefix
== 'f' || prefix
== 'd')
1430 if(op
== OP_EQ
|| op
== OP_NEQ
|| op
== OP_GRT
|| op
== OP_GEQ
)
1438 jvm_generate(p
, 2 * cell_size
, 1, "%ccmp%c", prefix
, fop
);
1439 jvm_generate(p
, 1, 1, "if%s L%i", cmpop
, label_true
);
1441 else if(prefix
== 'a')
1443 if(t
-> class == OBERON_TYPE_STRING
1444 || (t
-> class == OBERON_TYPE_POINTER
&& t
-> base
-> class == OBERON_TYPE_CHAR
))
1446 jvm_generate(p
, 2, 1, "invokestatic SYSTEM/STRCMP([B[B)I");
1447 jvm_generate(p
, 1, 0, "if%s L%i", cmpop
, label_true
);
1451 jvm_generate(p
, 1, 0, "if_acmp%s L%i", cmpop
, label_true
);
1456 jvm_generate(p
, 2 * cell_size
, 0, "if_%ccmp%s L%i", prefix
, cmpop
, label_true
);
1459 jvm_generate(p
, 0, 1, "iconst_0");
1460 jvm_generate(p
, 0, 0, "goto L%i", label_done
);
1461 jvm_generate_label(p
, label_true
);
1462 jvm_generate(p
, 0, 1, "iconst_1");
1463 jvm_generate_label(p
, label_done
);
1467 jvm_generate_operator(gen_proc_t
* p
, oberon_type_t
* t
, int op
)
1469 char prefix
= jvm_get_prefix(t
);
1470 int cell_size
= jvm_cell_size_for_type(t
);
1473 case OP_UNARY_MINUS
:
1474 jvm_generate(p
, cell_size
, cell_size
, "%cneg", prefix
);
1476 case OP_COMPLEMENTATION
:
1477 jvm_generate_push_int_size(p
, -1, t
-> size
);
1478 jvm_generate(p
, 2 * cell_size
, cell_size
, "%cxor", prefix
);
1481 jvm_generate_logical_not(p
);
1484 jvm_generate_abs(p
, prefix
);
1487 jvm_generate(p
, cell_size
, cell_size
, "invokestatic java/lang/Character/toUpperCase(I)I");
1491 jvm_generate(p
, 2 * cell_size
, cell_size
, "%cadd", prefix
);
1494 jvm_generate(p
, 2 * cell_size
, cell_size
, "%csub", prefix
);
1497 jvm_generate(p
, 2 * cell_size
, cell_size
, "%cmul", prefix
);
1500 jvm_generate(p
, 2 * cell_size
, cell_size
, "%cdiv", prefix
);
1503 jvm_generate(p
, 2 * cell_size
, cell_size
, "%crem", prefix
);
1506 jvm_generate(p
, 2 * cell_size
, cell_size
, "%cor", prefix
);
1508 case OP_INTERSECTION
:
1509 jvm_generate(p
, 2 * cell_size
, cell_size
, "%cand", prefix
);
1512 /* (a - b) == a & ~b */
1513 jvm_generate_push_int_size(p
, -1, t
-> size
);
1514 jvm_generate(p
, 2 * cell_size
, cell_size
, "%cxor", prefix
);
1515 jvm_generate(p
, 2 * cell_size
, cell_size
, "%cand", prefix
);
1517 case OP_SYM_DIFFERENCE
:
1518 jvm_generate(p
, 2 * cell_size
, cell_size
, "%cxor", prefix
);
1527 jvm_generate_compare_op(p
, t
, op
);
1530 gen_error("jvm_generate_operator: unk op %i", op
);
1536 jvm_generate_logical_or(gen_proc_t
* p
, oberon_expr_t
* a
, oberon_expr_t
* b
)
1538 int label_calc_b
= jvm_new_label_id(p
);
1539 int label_done
= jvm_new_label_id(p
);
1541 /* a OR b -- если a, то TRUE, иначе b */
1544 jvm_generate(p
, 1, 0, "ifeq L%i", label_calc_b
);
1545 jvm_generate(p
, 0, 1, "iconst_1");
1546 jvm_generate(p
, 0, 0, "goto L%i", label_done
);
1547 jvm_generate_label(p
, label_calc_b
);
1549 jvm_generate_label(p
, label_done
);
1553 jvm_generate_logical_and(gen_proc_t
* p
, oberon_expr_t
* a
, oberon_expr_t
* b
)
1555 int label_false
= jvm_new_label_id(p
);
1556 int label_done
= jvm_new_label_id(p
);
1558 /* a AND b -- если a, то b, иначе FALSE */
1561 jvm_generate(p
, 1, 0, "ifeq L%i", label_false
);
1563 jvm_generate(p
, 0, 0, "goto L%i", label_done
);
1564 jvm_generate_label(p
, label_false
);
1565 jvm_generate(p
, 0, 1, "iconst_0");
1566 jvm_generate_label(p
, label_done
);
1570 jvm_generate_range(gen_proc_t
* p
, oberon_expr_t
* a
, oberon_expr_t
* b
)
1572 /* { a } == 1 << a */
1573 /* { a..b } == (a <= b) ? ((2 << b) - (1 << a)) : (0); */
1577 oberon_type_t
* type
;
1584 cell_size
= jvm_cell_size_for_type(type
);
1585 prefix
= jvm_get_prefix(type
);
1589 jvm_generate_push_int_size(p
, 1, type
-> size
);
1591 jvm_generate(p
, 2 * cell_size
, cell_size
, "%cshl", prefix
);
1595 ra
= jvm_create_function_temp_var(p
, type
-> gen_type
);
1596 rb
= jvm_create_function_temp_var(p
, type
-> gen_type
);
1597 jvm_generate_var(ra
);
1598 jvm_generate_var(rb
);
1599 jvm_generate_var_initialization(p
, ra
);
1600 jvm_generate_var_initialization(p
, rb
);
1601 label_else
= jvm_new_label_id(p
);
1602 label_end
= jvm_new_label_id(p
);
1605 jvm_generate_store(p
, ra
);
1607 jvm_generate_store(p
, rb
);
1609 jvm_generate_load(p
, ra
);
1610 jvm_generate_load(p
, rb
);
1611 jvm_generate(p
, 2 * cell_size
, 0, "if_%ccmpgt L%i", prefix
, label_else
);
1613 jvm_generate_push_int_size(p
, 2, type
-> size
);
1614 jvm_generate_load(p
, rb
);
1615 jvm_generate(p
, 2 * cell_size
, cell_size
, "%cshl", prefix
);
1616 jvm_generate_push_int_size(p
, 2, type
-> size
);
1617 jvm_generate_load(p
, ra
);
1618 jvm_generate(p
, 2 * cell_size
, cell_size
, "%cshl", prefix
);
1619 jvm_generate(p
, 2 * cell_size
, cell_size
, "%csub", prefix
);
1620 jvm_generate(p
, 0, 0, "goto L%i", label_end
);
1622 jvm_generate_label(p
, label_else
);
1623 jvm_generate_push_int_size(p
, 0, type
-> size
);
1624 jvm_generate_label(p
, label_end
);
1627 /* TODO free registers */
1631 jvm_generate_in(gen_proc_t
* p
, oberon_expr_t
* a
, oberon_expr_t
* b
)
1633 oberon_type_t
* t
= a
-> result
;
1634 int cell_size
= jvm_cell_size_for_type(t
);
1635 char prefix
= jvm_get_prefix(t
);
1636 int label_else
= jvm_new_label_id(p
);
1637 int label_end
= jvm_new_label_id(p
);
1639 /* (a IN b) == (1 << a) & b */
1640 jvm_generate_push_int_size(p
, 1, t
-> size
);
1642 jvm_generate(p
, 2 * cell_size
, cell_size
, "%cshl", prefix
);
1644 jvm_generate(p
, 2 * cell_size
, cell_size
, "%cand", prefix
);
1648 jvm_generate(p
, cell_size
, 0, "lcmp");
1651 jvm_generate(p
, 1, 0, "ifeq L%i", label_else
);
1652 jvm_generate(p
, 0, 1, "iconst_1");
1653 jvm_generate(p
, 0, 0, "goto L%i", label_end
);
1654 jvm_generate_label(p
, label_else
);
1655 jvm_generate(p
, 0, 1, "iconst_0");
1656 jvm_generate_label(p
, label_end
);
1660 jvm_generate_shift(gen_proc_t
* p
, int op
, oberon_expr_t
* a
, oberon_expr_t
* b
)
1662 oberon_type_t
* t
= a
-> result
;
1663 int cell_size
= jvm_cell_size_for_type(t
);
1664 char prefix
= jvm_get_prefix(t
);
1665 char dt
= jvm_get_type_of_prefix(prefix
);
1668 jvm_generate_cast_type(p
, a
-> result
, t
);
1670 jvm_generate_cast_type(p
, b
-> result
, t
);
1685 gen_error("jvm_generate_shift: invalid op %i", op
);
1688 jvm_generate(p
, 2 * cell_size
, cell_size
, "invokestatic SYSTEM/%s(%c%c)%c", opname
, dt
, dt
, dt
);
1692 jvm_generate_entier(gen_proc_t
* p
, oberon_expr_t
* x
, oberon_type_t
* res
)
1694 char prefix
= jvm_get_prefix(x
-> result
);
1695 char postfix
= jvm_get_postfix(res
);
1698 jvm_generate_cast_prefix(p
, prefix
, 'd');
1699 jvm_generate(p
, 2, 2, "invokestatic java/lang/Math/floor(D)D");
1700 jvm_generate_cast_prefix(p
, 'd', postfix
);
1704 push_operator(gen_proc_t
* p
, oberon_oper_t
* oper
)
1706 oberon_type_t
* preq
= oper
-> left
-> result
;
1707 int op
= oper
-> op
;
1711 push_expr(p
, oper
-> left
);
1712 jvm_generate_cast_type(p
, oper
-> left
-> result
, oper
-> result
);
1715 push_expr(p
, oper
-> left
);
1716 jvm_generate_hard_cast_type(p
, oper
-> left
-> result
, oper
-> result
);
1718 case OP_COMPLEMENTATION
:
1719 case OP_UNARY_MINUS
:
1723 push_expr(p
, oper
-> left
);
1724 jvm_generate_operator(p
, preq
, op
);
1727 jvm_generate_entier(p
, oper
-> left
, oper
-> result
);
1737 case OP_INTERSECTION
:
1739 case OP_SYM_DIFFERENCE
:
1747 push_expr(p
, oper
-> left
);
1748 push_expr(p
, oper
-> right
);
1749 jvm_generate_operator(p
, preq
, op
);
1753 jvm_generate_logical_or(p
, oper
-> left
, oper
-> right
);
1756 jvm_generate_logical_and(p
, oper
-> left
, oper
-> right
);
1760 preq
= oper
-> right
-> result
;
1761 char * cname
= jvm_get_class_full_name(preq
);
1762 push_expr(p
, oper
-> left
);
1763 jvm_generate(p
, 1, 1, "instanceof %s", cname
);
1766 jvm_generate_range(p
, oper
-> left
, oper
-> right
);
1769 jvm_generate_in(p
, oper
-> left
, oper
-> right
);
1775 jvm_generate_shift(p
, op
, oper
-> left
, oper
-> right
);
1778 gen_error("push_oper: unk op %i", op
);
1784 push_expr(gen_proc_t
* p
, oberon_expr_t
* expr
)
1788 push_item(p
, (oberon_item_t
*) expr
);
1792 push_operator(p
, (oberon_oper_t
*) expr
);
1797 store_expr(gen_proc_t
* p
, oberon_expr_t
* dst
, oberon_expr_t
* src
)
1799 assert(dst
-> is_item
);
1800 oberon_item_t
* item
= (oberon_item_t
*) dst
;
1802 if(dst
-> result
-> class == OBERON_TYPE_ARRAY
1803 || src
-> result
-> class == OBERON_TYPE_ARRAY
)
1807 jvm_generate_copy_array(p
, dst
-> result
);
1809 else if(dst
-> result
-> class == OBERON_TYPE_RECORD
1810 || src
-> result
-> class == OBERON_TYPE_RECORD
)
1814 jvm_generate_copy_record(p
, dst
-> result
);
1816 else switch(item
-> mode
)
1819 jvm_generate_ldst_prepare(p
, item
-> var
-> gen_var
);
1821 jvm_generate_store(p
, item
-> var
-> gen_var
);
1825 char postfix
= jvm_get_postfix(src
-> result
);
1826 int cell_size
= jvm_cell_size_for_postfix(postfix
);
1827 assert(item
-> parent
-> is_item
);
1828 push_item(p
, (oberon_item_t
*) item
-> parent
);
1829 push_expr(p
, item
-> args
);
1830 check_index(p
, item
-> args
-> result
);
1832 jvm_generate(p
, 1 + 1 + cell_size
, 0, "%castore", postfix
);
1835 assert(item
-> parent
-> is_item
);
1836 push_item(p
, (oberon_item_t
*) item
-> parent
);
1837 jvm_generate_ldst_prepare(p
, item
-> var
-> gen_var
);
1839 jvm_generate_store(p
, item
-> var
-> gen_var
);
1842 gen_error("store_expr: unk mode %i", item
-> mode
);
1848 oberon_generate_assign(oberon_context_t
* ctx
, oberon_expr_t
* src
, oberon_expr_t
* dst
)
1853 m
= ctx
-> mod
-> gen_mod
;
1854 p
= m
-> class -> p
;
1856 store_expr(p
, dst
, src
);
1860 oberon_generate_copy(oberon_context_t
* ctx
, oberon_expr_t
* src
, oberon_expr_t
* dst
)
1866 m
= ctx
-> mod
-> gen_mod
;
1867 p
= m
-> class -> p
;
1872 desc
= jvm_get_descriptor(dst
-> result
);
1874 jvm_generate(p
, 2, 0, "invokestatic SYSTEM/COPY(%s%s)V", desc
, desc
);
1878 oberon_generate_assert(oberon_context_t
* ctx
, oberon_expr_t
* cond
)
1883 m
= ctx
-> mod
-> gen_mod
;
1884 p
= m
-> class -> p
;
1887 jvm_generate(p
, 1, 0, "invokestatic SYSTEM/ASSERT(Z)V");
1891 oberon_generate_assert_n(oberon_context_t
* ctx
, oberon_expr_t
* cond
, int64_t n
)
1896 m
= ctx
-> mod
-> gen_mod
;
1897 p
= m
-> class -> p
;
1900 jvm_generate_push_int_size(p
, n
, 8);
1901 jvm_generate(p
, 1 + 2, 0, "invokestatic SYSTEM/ASSERT(ZJ)V");
1905 oberon_generate_trap(oberon_context_t
* ctx
, int64_t n
)
1910 m
= ctx
-> mod
-> gen_mod
;
1911 p
= m
-> class -> p
;
1913 jvm_generate_push_int_size(p
, n
, 8);
1914 jvm_generate(p
, 2, 0, "invokestatic SYSTEM/TRAP(J)V");
1918 oberon_generate_halt(oberon_context_t
* ctx
, int64_t n
)
1923 m
= ctx
-> mod
-> gen_mod
;
1924 p
= m
-> class -> p
;
1926 jvm_generate_push_int_size(p
, n
, 8);
1927 jvm_generate(p
, 2, 0, "invokestatic SYSTEM/HALT(J)V");
1931 oberon_set_out_directory(oberon_context_t
* ctx
, const char * path
)
1935 c
= ctx
-> gen_context
;
1937 c
-> dir
= new_string(path
);