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 * Генерирует код для инициализации массива со статическим базовым типом
30 jvm_generate_array_initialization(gen_proc_t
* p
, oberon_type_t
* arr
)
33 oberon_type_t
* base
= arr
;
34 while(base
-> class == OBERON_TYPE_ARRAY
)
40 if(base
-> class != OBERON_TYPE_RECORD
)
42 jvm_generate(p
, 1, 0, "pop");
54 reg_dst
= jvm_alloc_register_untyped(p
-> rf
, false);
55 jvm_generate(p
, 1, 0, "astore %i", reg_dst
);
58 * Входящие параметры заграблены.
59 * Теперь генерируем эквивалентный код:
61 * int len = dst.length
66 * dst[i, ...] = new record;
71 * Где "..." такой же код (начало и конец) для следующей размерности.
74 for(int i
= 0; i
< dim
; i
++)
76 loop
[i
].reg_index
= jvm_alloc_register_untyped(p
-> rf
, false);
77 loop
[i
].reg_length
= jvm_alloc_register_untyped(p
-> rf
, false);
78 loop
[i
].start
= jvm_new_label_id(p
);
79 loop
[i
].end
= jvm_new_label_id(p
);
81 jvm_generate(p
, 0, 1, "iconst_0");
82 jvm_generate(p
, 1, 0, "istore %i", loop
[i
].reg_index
);
84 jvm_generate(p
, 0, 1, "aload %i", reg_dst
);
85 jvm_generate(p
, 1, 1, "arraylength");
86 jvm_generate(p
, 1, 0, "istore %i", loop
[i
].reg_length
);
88 /* if(i >= len) goto end; */
89 jvm_generate_label(p
, loop
[i
].start
);
90 jvm_generate(p
, 0, 1, "iload %i", loop
[i
].reg_index
);
91 jvm_generate(p
, 0, 1, "iload %i", loop
[i
].reg_length
);
92 jvm_generate(p
, 2, 0, "if_icmpge L%i", loop
[i
].end
);
95 jvm_generate(p
, 0, 1, "aload %i", reg_dst
);
96 jvm_generate(p
, 0, 1, "iload %i", loop
[0].reg_index
);
97 for(int i
= 1; i
< dim
; i
++)
99 jvm_generate(p
, 2, 1, "aaload");
100 jvm_generate(p
, 0, 1, "iload %i", loop
[i
].reg_index
);
102 jvm_generate_new(p
, base
, 0);
103 jvm_generate(p
, 3, 0, "aastore");
105 for(int i
= dim
- 1; i
>= 0; i
--)
107 jvm_generate(p
, 0, 0, "iinc %i 1", loop
[i
].reg_index
);
108 jvm_generate(p
, 0, 0, "goto L%i", loop
[i
].start
);
109 jvm_generate_label(p
, loop
[i
].end
);
114 jvm_generate_new(gen_proc_t
* p
, oberon_type_t
* type
, int num
)
119 oberon_type_t
* base
;
121 switch(type
-> class)
123 case OBERON_TYPE_INTEGER
:
124 case OBERON_TYPE_BOOLEAN
:
125 case OBERON_TYPE_PROCEDURE
:
126 case OBERON_TYPE_REAL
:
127 case OBERON_TYPE_POINTER
:
128 gen_error("jvm_generate_new_static: static alocation not allowed");
130 case OBERON_TYPE_RECORD
:
132 cname
= jvm_get_class_full_name(type
);
133 jvm_generate(p
, 0, 1, "new %s", cname
);
134 jvm_generate(p
, 1, 2, "dup");
135 jvm_generate(p
, 1, 0, "invokespecial %s/<init>()V", cname
);
137 case OBERON_TYPE_ARRAY
:
140 desc
= jvm_get_descriptor(type
);
141 while(base
-> class == OBERON_TYPE_ARRAY
)
145 assert(base
-> size
== 0);
150 assert(base
-> size
> 0);
151 jvm_generate_push_int(p
, base
-> size
);
158 jvm_generate(p
, dim
, 1, "multianewarray %s %i", desc
, dim
);
159 jvm_generate(p
, 1, 2, "dup");
160 jvm_generate_array_initialization(p
, type
);
163 gen_error("jvm_generate_new_static: unk type class %i", type
-> class);
169 * Генерирует код для копирования полей из первой записи во вторую.
170 * ( aref_dst aref_src -- )
175 jvm_generate_copy_record(gen_proc_t
* p
, oberon_type_t
* rec
)
177 assert(rec
-> class == OBERON_TYPE_RECORD
);
178 char * desc
= jvm_get_descriptor(rec
);
179 char * cname
= jvm_get_class_full_name(rec
);
180 jvm_generate(p
, 1 + 1, 0, "invokestatic %s/$COPY$(%s%s)V", cname
, desc
, desc
);
184 * Генерирует кода для копирования массивов.
185 * ( aref_dst aref_src -- )
190 jvm_generate_copy_array(gen_proc_t
* p
, oberon_type_t
* arr
)
193 oberon_type_t
* base
= arr
;
194 while(base
-> class == OBERON_TYPE_ARRAY
)
207 int reg_dst
= jvm_alloc_register_untyped(p
-> rf
, false);
208 int reg_src
= jvm_alloc_register_untyped(p
-> rf
, false);
209 jvm_generate(p
, 1, 0, "astore %i", reg_src
);
210 jvm_generate(p
, 1, 0, "astore %i", reg_dst
);
213 * Входящие параметры заграблены.
214 * Теперь генерируем эквивалентный код:
216 * int len = src.length
221 * copy from src[i, ...] to dst[i, ...];
226 * Где "..." такой же код (начало и конец) для следующей размерности.
229 for(int i
= 0; i
< dim
; i
++)
231 loop
[i
].reg_index
= jvm_alloc_register_untyped(p
-> rf
, false);
232 loop
[i
].reg_length
= jvm_alloc_register_untyped(p
-> rf
, false);
233 loop
[i
].start
= jvm_new_label_id(p
);
234 loop
[i
].end
= jvm_new_label_id(p
);
236 jvm_generate(p
, 0, 1, "iconst_0");
237 jvm_generate(p
, 1, 0, "istore %i", loop
[i
].reg_index
);
239 jvm_generate(p
, 0, 1, "aload %i", reg_src
);
240 jvm_generate(p
, 1, 1, "arraylength");
241 jvm_generate(p
, 1, 0, "istore %i", loop
[i
].reg_length
);
243 /* if(i >= len) goto end; */
244 jvm_generate_label(p
, loop
[i
].start
);
245 jvm_generate(p
, 0, 1, "iload %i", loop
[i
].reg_index
);
246 jvm_generate(p
, 0, 1, "iload %i", loop
[i
].reg_length
);
247 jvm_generate(p
, 2, 0, "if_icmpge L%i", loop
[i
].end
);
250 if(base
-> class == OBERON_TYPE_RECORD
)
252 /* Получаем записи по индексам ( -- dst src ) */
254 jvm_generate(p
, 0, 1, "aload %i", reg_dst
);
255 for(int i
= 0; i
< dim
; i
++)
257 jvm_generate(p
, 0, 1, "iload %i", loop
[i
].reg_index
);
258 jvm_generate(p
, 2, 1, "aaload");
261 jvm_generate(p
, 0, 1, "aload %i", reg_src
);
262 for(int i
= 0; i
< dim
; i
++)
264 jvm_generate(p
, 0, 1, "iload %i", loop
[i
].reg_index
);
265 jvm_generate(p
, 2, 1, "aaload");
268 /* Копируем записи ( dst src -- ) */
269 jvm_generate_copy_record(p
, base
);
273 char postfix
= jvm_get_postfix(base
);
274 int cell_size
= jvm_cell_size_for_postfix(postfix
);
276 /* Получаем массивы и индексы ( -- dst i src i ) */
278 jvm_generate(p
, 0, 1, "aload %i", reg_dst
);
279 jvm_generate(p
, 0, 1, "iload %i", loop
[0].reg_index
);
280 for(int i
= 1; i
< dim
; i
++)
282 jvm_generate(p
, 2, 1, "aaload");
283 jvm_generate(p
, 0, 1, "iload %i", loop
[i
].reg_index
);
286 jvm_generate(p
, 0, 1, "aload %i", reg_src
);
287 jvm_generate(p
, 0, 1, "iload %i", loop
[0].reg_index
);
288 for(int i
= 1; i
< dim
; i
++)
290 jvm_generate(p
, 2, 1, "aaload");
291 jvm_generate(p
, 0, 1, "iload %i", loop
[i
].reg_index
);
294 /* Копируем значения ( dst i src i -- ) */
295 jvm_generate(p
, 2, cell_size
, "%caload", postfix
);
296 jvm_generate(p
, 2 + cell_size
, 0, "%castore", postfix
);
299 for(int i
= dim
- 1; i
>= 0; i
--)
301 jvm_generate(p
, 0, 0, "iinc %i 1", loop
[i
].reg_index
);
302 jvm_generate(p
, 0, 0, "goto L%i", loop
[i
].start
);
303 jvm_generate_label(p
, loop
[i
].end
);
308 jvm_generate_push_procedure_pointer(gen_proc_t
* p
, oberon_object_t
* proc
)
310 char * full_name
= jvm_get_field_full_name_safe(proc
);
311 char * desc
= jvm_get_descriptor(proc
-> type
);
312 jvm_generate(p
, 0, 1, "getstatic %s/pointer %s", full_name
, desc
);
316 oberon_generator_init_context(oberon_context_t
* ctx
)
318 gen_context_t
* gen_context
= GC_MALLOC(sizeof *gen_context
);
319 memset(gen_context
, 0, sizeof *gen_context
);
321 ctx
-> gen_context
= gen_context
;
322 gen_context
-> dir
= ".";
326 oberon_generator_destroy_context(oberon_context_t
* ctx
)
331 oberon_generate_procedure_class(const char * dir
, oberon_type_t
* proc
)
336 struct gen_class
* class;
338 cname
= jvm_get_class_full_name(proc
);
339 class = jvm_create_class(dir
, cname
);
342 fprintf(fp
, ".source SYSTEM\n");
343 fprintf(fp
, ".class public abstract %s\n", cname
);
344 fprintf(fp
, ".super java/lang/Object\n\n");
346 fprintf(fp
, ".method <init>()V\n");
347 fprintf(fp
, " aload_0\n");
348 fprintf(fp
, " invokespecial java/lang/Object/<init>()V\n");
349 fprintf(fp
, " return\n");
350 fprintf(fp
, ".end method\n\n");
352 signature
= jvm_get_procedure_signature(proc
);
354 fprintf(fp
, ".method public abstract invoke%s\n", signature
);
355 fprintf(fp
, ".end method\n\n");
357 jvm_destroy_class(class);
361 oberon_generate_procedure_pointer_class(const char * dir
, oberon_object_t
* proc
)
368 struct gen_class
* class;
370 cname
= jvm_get_field_full_name_safe(proc
);
371 class = jvm_create_class(dir
, cname
);
372 abscname
= jvm_get_class_full_name(proc
-> type
);
373 absdesc
= jvm_get_descriptor(proc
-> type
);
376 fprintf(fp
, ".source %s\n", proc
-> module
-> name
);
377 fprintf(fp
, ".class public %s\n", cname
);
378 fprintf(fp
, ".super %s\n\n", abscname
);
380 fprintf(fp
, ".field public static pointer %s\n\n", absdesc
);
382 fprintf(fp
, ".method private <init>()V\n");
383 fprintf(fp
, " aload_0\n");
384 fprintf(fp
, " invokespecial %s/<init>()V\n", abscname
);
385 fprintf(fp
, " return\n");
386 fprintf(fp
, ".end method\n\n");
388 fprintf(fp
, ".method static <clinit>()V\n");
389 fprintf(fp
, " .limit stack 2\n");
390 fprintf(fp
, " new %s\n", cname
);
391 fprintf(fp
, " dup\n");
392 fprintf(fp
, " invokespecial %s/<init>()V\n", cname
);
393 fprintf(fp
, " putstatic %s/pointer %s\n", cname
, absdesc
);
394 fprintf(fp
, " return\n");
395 fprintf(fp
, ".end method\n\n");
397 signature
= jvm_get_procedure_signature(proc
-> type
);
399 gen_proc_t
* p
= jvm_create_proc(class);
400 jvm_generate_function_header(p
, "public", "invoke", signature
);
401 jvm_alloc_register_untyped(p
-> rf
, false);
404 int num
= proc
-> type
-> num_decl
;
405 oberon_object_t
* param
= proc
-> type
-> decl
;
406 for(int i
= 0; i
< num
; i
++)
408 gen_type_t
* t
= param
-> type
-> gen_type
;
409 if(param
-> class == OBERON_CLASS_VAR_PARAM
)
411 int reg
= jvm_alloc_register_untyped(p
-> rf
, true);
412 jvm_generate(p
, 0, 1, "aload %i", reg
);
413 jvm_generate(p
, 0, 1, "iload %i", reg
+ 1);
417 int reg
= jvm_alloc_register_untyped(p
-> rf
, t
-> wide
);
418 jvm_generate(p
, 0, t
-> cell_size
, "%cload %i", t
-> prefix
, reg
);
420 use_size
+= t
-> cell_size
;
421 param
= param
-> next
;
424 char * full_name
= jvm_get_field_full_name(proc
);
425 int cell_size
= jvm_cell_size_for_type(proc
-> type
-> base
);
426 jvm_generate(p
, use_size
, cell_size
, "invokestatic %s%s", full_name
, signature
);
428 if(proc
-> type
-> base
-> class == OBERON_TYPE_NOTYPE
)
430 jvm_generate(p
, 0, 0, "return");
434 char prefix
= jvm_get_prefix(proc
-> type
-> base
);
435 jvm_generate(p
, cell_size
, 0, "%creturn", prefix
);
438 jvm_generate_function_end(p
);
440 jvm_destroy_class(class);
444 oberon_generate_record_class(const char * dir
, gen_module_t
* m
, oberon_type_t
* rec
)
447 struct gen_class
* class;
449 /* Устанавливаем новоый id */
450 rec
-> gen_type
-> rec_id
= m
-> rec_id
;
453 cname
= jvm_get_class_full_name(rec
);
454 class = jvm_create_class(dir
, cname
);
456 fprintf(class -> fp
, ".source %s\n", rec
-> module
-> name
);
457 fprintf(class -> fp
, ".class public %s\n", cname
);
459 if(rec
-> base
== NULL
)
461 fprintf(class -> fp
, ".super java/lang/Object\n\n");
465 class -> base
= rec
-> base
-> gen_type
-> class;
466 fprintf(class -> fp
, ".super %s\n\n", class -> base
-> full_name
);
469 rec
-> gen_type
-> class = class;
473 oberon_generator_init_type(oberon_context_t
* ctx
, oberon_type_t
* type
)
475 gen_type_t
* t
= GC_MALLOC(sizeof *t
);
476 memset(t
, 0, sizeof *t
);
477 type
-> gen_type
= t
;
480 c
= ctx
-> gen_context
;
483 switch(type
-> class)
485 case OBERON_TYPE_NOTYPE
:
486 case OBERON_TYPE_INTEGER
:
487 case OBERON_TYPE_BOOLEAN
:
488 case OBERON_TYPE_ARRAY
:
489 case OBERON_TYPE_POINTER
:
490 case OBERON_TYPE_REAL
:
491 case OBERON_TYPE_CHAR
:
492 case OBERON_TYPE_STRING
:
493 case OBERON_TYPE_SET
:
494 case OBERON_TYPE_NIL
:
495 case OBERON_TYPE_SYSTEM_BYTE
:
496 case OBERON_TYPE_SYSTEM_PTR
:
498 case OBERON_TYPE_RECORD
:
499 m
= type
-> module
-> gen_mod
;
500 oberon_generate_record_class(c
-> dir
, m
, type
);
502 case OBERON_TYPE_PROCEDURE
:
503 oberon_generate_procedure_class(c
-> dir
, type
);
506 gen_error("oberon_generator_init_type: unk calss %i", type
-> class);
510 if(type
-> class != OBERON_TYPE_NOTYPE
)
512 t
-> wide
= jvm_is_wide_type(type
);
513 t
-> prefix
= jvm_get_prefix(type
);
514 t
-> postfix
= jvm_get_postfix(type
);
517 t
-> cell_size
= jvm_cell_size_for_type(type
);
519 if(type
-> class != OBERON_TYPE_NIL
)
521 t
-> desc
= jvm_get_descriptor(type
);
526 oberon_generator_init_record(oberon_context_t
* ctx
, oberon_type_t
* rec
)
528 struct gen_class
* class;
529 class = rec
-> gen_type
-> class;
531 int num
= rec
-> num_decl
;
532 oberon_object_t
* field
= rec
-> decl
;
533 for(int i
= 0; i
< num
; i
++)
535 jvm_generate_var(field
-> gen_var
);
536 field
= field
-> next
;
539 /* Стандартный конструктор класса */
540 /* Инициализирует внутренние статические записи и массивы */
541 gen_proc_t
* p
= jvm_create_proc(class);
542 jvm_generate_function_header(p
, "public", "<init>", "()V");
543 jvm_alloc_register_untyped(p
-> rf
, false);
544 jvm_generate(p
, 0, 1, "aload_0");
547 jvm_generate(p
, 1, 0, "invokespecial %s/<init>()V", class -> base
-> full_name
);
551 jvm_generate(p
, 1, 0, "invokespecial java/lang/Object/<init>()V");
553 num
= rec
-> num_decl
;
555 for(int i
= 0; i
< num
; i
++)
557 jvm_generate(p
, 0, 1, "aload_0");
558 jvm_generate_var_initialization(p
, field
-> gen_var
);
560 if(field
-> type
-> class == OBERON_TYPE_RECORD
561 || field
-> type
-> class == OBERON_TYPE_ARRAY
)
563 jvm_generate(p
, 0, 1, "aload_0");
564 jvm_generate_ldst_prepare(p
, field
-> gen_var
);
565 jvm_generate_new(p
, field
-> type
, 0);
566 jvm_generate_store(p
, field
-> gen_var
);
568 field
= field
-> next
;
570 jvm_generate(p
, 0, 0, "return");
571 jvm_generate_function_end(p
);
573 /* Метод для копирования полей класса */
574 /* reg0 == src -> reg1 == dst */
575 p
= jvm_create_proc(class);
576 char * signature
= new_string("(%s%s)V", rec
-> gen_type
-> desc
, rec
-> gen_type
-> desc
);
577 jvm_generate_function_header(p
, "public static", "$COPY$", signature
);
579 gen_var_t
* copy_dst
= jvm_create_function_var(p
, JVM_STORAGE_REGISTER
, "dst", rec
-> gen_type
);
580 gen_var_t
* copy_src
= jvm_create_function_var(p
, JVM_STORAGE_REGISTER
, "src", rec
-> gen_type
);
581 jvm_generate_var(copy_dst
);
582 jvm_generate_var(copy_src
);
583 jvm_generate_var_initialization(p
, copy_dst
);
584 jvm_generate_var_initialization(p
, copy_src
);
588 jvm_generate_load(p
, copy_dst
);
589 jvm_generate_load(p
, copy_src
);
590 jvm_generate_copy_record(p
, rec
-> base
);
593 num
= rec
-> num_decl
;
595 for(int i
= 0; i
< num
; i
++)
597 if(field
-> type
-> class == OBERON_TYPE_RECORD
)
599 jvm_generate_load(p
, copy_dst
);
600 jvm_generate_load(p
, field
-> gen_var
);
601 jvm_generate_load(p
, copy_src
);
602 jvm_generate_load(p
, field
-> gen_var
);
603 jvm_generate_copy_record(p
, field
-> type
);
605 else if(field
-> type
-> class == OBERON_TYPE_ARRAY
)
607 jvm_generate_load(p
, copy_dst
);
608 jvm_generate_load(p
, field
-> gen_var
);
609 jvm_generate_load(p
, copy_src
);
610 jvm_generate_load(p
, field
-> gen_var
);
611 jvm_generate_copy_array(p
, field
-> type
);
615 jvm_generate_load(p
, copy_dst
);
616 jvm_generate_ldst_prepare(p
, field
-> gen_var
);
617 jvm_generate_load(p
, copy_src
);
618 jvm_generate_load(p
, field
-> gen_var
);
619 jvm_generate_store(p
, field
-> gen_var
);
621 field
= field
-> next
;
623 jvm_generate(p
, 0, 0, "return");
624 jvm_generate_function_end(p
);
626 jvm_destroy_class(class);
630 oberon_generator_init_var(oberon_context_t
* ctx
, oberon_object_t
* var
)
633 m
= ctx
-> mod
-> gen_mod
;
635 struct gen_class
* class;
639 struct gen_class
* c
;
640 char * name
= var
-> name
;
641 gen_type_t
* t
= var
-> type
-> gen_type
;
646 gen_error("uninitialized type class %i", var
-> type
-> class);
651 case OBERON_CLASS_VAR_PARAM
:
652 p
= var
-> parent
-> gen_proc
;
653 var
-> gen_var
= jvm_create_function_var(p
, JVM_STORAGE_FRAME_PARAM_VARPTR
, name
, t
);
655 case OBERON_CLASS_PARAM
:
656 p
= var
-> parent
-> gen_proc
;
657 var
-> gen_var
= jvm_create_function_var(p
, JVM_STORAGE_FRAME_PARAM_VAR
, name
, t
);
659 case OBERON_CLASS_FIELD
:
660 c
= var
-> parent_type
-> gen_type
-> class;
661 var
-> gen_var
= jvm_create_class_var(c
, JVM_STORAGE_FIELD_VAR
, name
, t
);
663 case OBERON_CLASS_VAR
:
666 p
= var
-> parent
-> gen_proc
;
667 var
-> gen_var
= jvm_create_function_var(p
, JVM_STORAGE_FRAME_VAR
, name
, t
);
671 var
-> gen_var
= jvm_create_class_var(class, JVM_STORAGE_STATIC_VAR
, name
, t
);
672 jvm_generate_var(var
-> gen_var
);
676 gen_error("oberon_generator_init_var: unk var class %i", var
-> class);
682 oberon_generator_init_temp_var(oberon_context_t
* ctx
, oberon_object_t
* var
)
684 assert(var
-> class == OBERON_CLASS_VAR
);
687 m
= ctx
-> mod
-> gen_mod
;
693 t
= var
-> type
-> gen_type
;
695 var
-> gen_var
= jvm_create_function_temp_var(p
, t
);
696 jvm_generate_var(var
-> gen_var
);
697 jvm_generate_var_initialization(p
, var
-> gen_var
);
701 oberon_generator_init_proc(oberon_context_t
* ctx
, oberon_object_t
* proc
)
703 struct gen_class
* class = proc
-> module
-> gen_mod
-> class;
704 proc
-> gen_proc
= jvm_create_proc(class);
705 proc
-> gen_proc
-> full_name
= jvm_get_field_full_name_safe(proc
);
706 jvm_create_static_links(proc
);
710 oberon_generator_init_module(oberon_context_t
* ctx
, oberon_module_t
* mod
)
712 gen_module_t
* m
= GC_MALLOC(sizeof *m
);
713 memset(m
, 0, sizeof *m
);
717 c
= ctx
-> gen_context
;
719 struct gen_class
* class;
720 class = jvm_create_class(c
-> dir
, mod
-> name
);
722 fprintf(class -> fp
, ".source %s\n", mod
-> name
);
723 fprintf(class -> fp
, ".class %s\n", mod
-> name
);
724 fprintf(class -> fp
, ".super java/lang/Object\n\n");
726 fprintf(class -> fp
, ".field private static $INITIALIZED$ Z\n\n");
734 oberon_generator_fini_module(oberon_module_t
* mod
)
736 jvm_destroy_class(mod
-> gen_mod
-> class);
740 push_expr(gen_proc_t
* p
, oberon_expr_t
* expr
);
743 oberon_generate_static_initialization(gen_proc_t
* p
, oberon_object_t
* x
)
745 if(x
-> type
-> class == OBERON_TYPE_ARRAY
746 || x
-> type
-> class == OBERON_TYPE_RECORD
)
748 jvm_generate_ldst_prepare(p
, x
-> gen_var
);
749 jvm_generate_new(p
, x
-> type
, 0);
750 jvm_generate_store(p
, x
-> gen_var
);
755 oberon_generate_begin_module(oberon_context_t
* ctx
)
759 struct gen_class
* class;
761 class = ctx
-> mod
-> gen_mod
-> class;
763 p
= jvm_create_proc(class);
764 jvm_generate_function_header(p
, "public static", "BEGIN", "()V");
766 label_cont
= jvm_new_label_id(p
);
767 jvm_generate(p
, 0, 1, "getstatic %s/$INITIALIZED$ Z", class -> full_name
);
768 jvm_generate(p
, 1, 0, "ifeq L%i", label_cont
);
769 jvm_generate(p
, 0, 0, "return");
770 jvm_generate_label(p
, label_cont
);
772 jvm_generate(p
, 0, 1, "iconst_1");
773 jvm_generate(p
, 1, 0, "putstatic %s/$INITIALIZED$ Z", class -> full_name
);
775 /* Инициализация переменных объявленных в модуле */
776 oberon_object_t
* x
= ctx
-> mod
-> decl
-> list
-> next
;
779 if(x
-> class == OBERON_CLASS_MODULE
)
781 if(!x
-> module
-> intrinsic
)
783 jvm_generate(p
, 0, 0, "invokestatic %s/BEGIN()V", x
-> module
-> gen_mod
-> class -> full_name
);
786 else if(x
-> class == OBERON_CLASS_VAR
)
788 jvm_generate_var_initialization(p
, x
-> gen_var
);
789 oberon_generate_static_initialization(p
, x
);
797 oberon_generate_end_module(oberon_context_t
* ctx
)
799 struct gen_class
* class = ctx
-> mod
-> gen_mod
-> class;
800 gen_proc_t
* p
= class -> p
;
802 jvm_generate(p
, 0, 0, "return");
803 jvm_generate_function_end(class -> p
);
805 p
= jvm_create_proc(class);
806 jvm_generate_function_header(p
, "private", "<init>", "()V");
807 jvm_alloc_register_untyped(p
-> rf
, false);
808 jvm_generate(p
, 0, 1, "aload_0");
809 jvm_generate(p
, 1, 0, "invokespecial java/lang/Object/<init>()V");
810 jvm_generate(p
, 0, 0, "return");
811 jvm_generate_function_end(class -> p
);
815 * Генерирует код для получения размера измерения массива
816 * Аналог Обероновского LEN(v, n); где n = 0 - первое измерение.
821 jvm_generate_array_len(gen_proc_t
* p
, int dim
)
825 jvm_generate(p
, 0, 1, "iconst_0");
826 jvm_generate(p
, 2, 1, "aaload");
829 jvm_generate(p
, 1, 1, "arraylength");
833 jvm_generate_array_duplicate_and_replace(gen_proc_t
* p
, gen_var_t
* v
, oberon_type_t
* arr
)
835 jvm_generate_ldst_prepare(p
, v
);
838 oberon_type_t
* base
= arr
;
839 while(base
-> class == OBERON_TYPE_ARRAY
)
841 if(base
-> size
== 0)
843 jvm_generate_load(p
, v
);
844 jvm_generate_array_len(p
, dim
);
850 jvm_generate_new(p
, arr
, dim
);
851 jvm_generate(p
, 1, 2, "dup");
852 jvm_generate_load(p
, v
);
853 jvm_generate_copy_array(p
, arr
);
854 jvm_generate_store(p
, v
);
858 jvm_generate_record_duplicate_and_replace(gen_proc_t
* p
, gen_var_t
* v
, oberon_type_t
* rec
)
860 jvm_generate_ldst_prepare(p
, v
);
861 jvm_generate_new(p
, rec
, 0);
862 jvm_generate(p
, 1, 2, "dup");
863 jvm_generate_load(p
, v
);
864 jvm_generate_copy_record(p
, rec
);
865 jvm_generate_store(p
, v
);
869 jvm_generate_local_object(gen_proc_t
* p
, oberon_object_t
* x
)
872 struct gen_class
* class;
877 // Убеждаемся что сейчас находимся в функции
883 case OBERON_CLASS_VAR_PARAM
:
884 case OBERON_CLASS_PARAM
:
885 case OBERON_CLASS_VAR
:
888 case OBERON_CLASS_CONST
:
889 case OBERON_CLASS_TYPE
:
890 case OBERON_CLASS_PROC
:
893 gen_error("jvm_generate_local_initialization: wat class %i", x
-> class);
899 jvm_generate_local_initialization(gen_proc_t
* p
, oberon_object_t
* x
)
902 struct gen_class
* class;
907 // Убеждаемся что сейчас находимся в функции
913 case OBERON_CLASS_VAR_PARAM
:
914 jvm_generate_var_initialization(p
, v
);
916 case OBERON_CLASS_PARAM
:
917 jvm_generate_var_initialization(p
, v
);
918 if(x
-> type
-> class == OBERON_TYPE_ARRAY
)
920 jvm_generate_array_duplicate_and_replace(p
, v
, x
-> type
);
922 else if(x
-> type
-> class == OBERON_TYPE_RECORD
)
924 jvm_generate_record_duplicate_and_replace(p
, v
, x
-> type
);
927 case OBERON_CLASS_VAR
:
928 jvm_generate_var_initialization(p
, v
);
929 oberon_generate_static_initialization(p
, x
);
931 case OBERON_CLASS_CONST
:
932 case OBERON_CLASS_TYPE
:
933 case OBERON_CLASS_PROC
:
936 gen_error("jvm_generate_local_initialization: wat class %i", x
-> class);
942 oberon_generate_begin_proc(oberon_context_t
* ctx
, oberon_object_t
* proc
)
947 oberon_object_t
* var
;
949 p
= proc
-> gen_proc
;
953 signature
= jvm_get_local_procedure_signature(proc
);
957 oberon_generate_procedure_pointer_class(p
-> class -> dir
, proc
);
958 signature
= jvm_get_procedure_signature(proc
-> type
);
961 name
= jvm_get_name(proc
);
962 jvm_generate_function_header(p
, "public static", name
, signature
);
966 jvm_generate_staticlinks(proc
);
969 jvm_generate_procedure_frame(proc
);
971 /* Создание параметров и переменных */
972 var
= proc
-> scope
-> list
-> next
;
975 jvm_generate_local_object(p
, var
);
979 jvm_generate_frame_initialization(p
);
981 /* Инициализация парамеров и переменных */
982 var
= proc
-> scope
-> list
-> next
;
985 jvm_generate_local_initialization(p
, var
);
991 oberon_generate_end_proc(oberon_context_t
* ctx
)
996 m
= ctx
-> mod
-> gen_mod
;
999 oberon_generate_trap(ctx
, -4);
1000 jvm_generate_function_end(p
);
1004 oberon_generator_reserve_label(oberon_context_t
* ctx
)
1010 m
= ctx
-> mod
-> gen_mod
;
1011 p
= m
-> class -> p
;
1013 l
= GC_MALLOC(sizeof *l
);
1014 memset(l
, 0, sizeof *l
);
1016 l
-> id
= jvm_new_label_id(p
);
1021 oberon_generate_label(oberon_context_t
* ctx
, gen_label_t
* l
)
1026 m
= ctx
-> mod
-> gen_mod
;
1027 p
= m
-> class -> p
;
1029 jvm_generate_label(p
, l
-> id
);
1033 oberon_generate_goto(oberon_context_t
* ctx
, gen_label_t
* l
)
1038 m
= ctx
-> mod
-> gen_mod
;
1039 p
= m
-> class -> p
;
1041 jvm_generate(p
, 0, 0, "goto L%i", l
-> id
);
1045 oberon_generate_branch(oberon_context_t
* ctx
, oberon_expr_t
* cond
, bool gotoif
, gen_label_t
* l
)
1050 m
= ctx
-> mod
-> gen_mod
;
1051 p
= m
-> class -> p
;
1057 /* переход если false */
1058 jvm_generate(p
, 1, 0, "ifeq L%i", l
-> id
);
1062 /* переход если true */
1063 jvm_generate(p
, 1, 0, "ifne L%i", l
-> id
);
1068 push_varptr(gen_proc_t
* p
, oberon_expr_t
* expr
)
1070 assert(expr
-> is_item
);
1072 switch(expr
-> item
.mode
)
1075 jvm_generate_ldst_prepare(p
, expr
-> item
.var
-> gen_var
);
1078 push_item(p
, expr
-> item
.parent
);
1079 push_expr(p
, expr
-> item
.args
);
1082 push_item(p
, expr
-> item
.parent
);
1083 jvm_generate_ldst_prepare(p
, expr
-> item
.var
-> gen_var
);
1086 push_varptr(p
, (oberon_expr_t
*) expr
-> item
.parent
);
1089 gen_error("push_varptr: wat %i", expr
-> item
.mode
);
1095 jvm_generate_call_proc(gen_proc_t
* p
, oberon_item_t
* desig
)
1097 assert(desig
-> var
== NULL
);
1098 assert(desig
-> mode
== MODE_CALL
);
1100 bool direct_call
= false;
1101 if(desig
-> parent
-> mode
== MODE_VAR
)
1103 if(desig
-> parent
-> var
-> class == OBERON_CLASS_PROC
)
1109 oberon_type_t
* procsig
;
1110 procsig
= desig
-> parent
-> result
;
1112 if(direct_call
== false)
1114 /* Загружаем указатель на процедуру */
1115 push_item(p
, desig
-> parent
);
1120 jvm_generate_push_static_links(p
, desig
-> parent
-> var
);
1124 int result_cells
= jvm_cell_size_for_type(procsig
-> base
);
1126 int num
= desig
-> num_args
;
1127 oberon_expr_t
* arg
= desig
-> args
;
1128 oberon_object_t
* param
= procsig
-> decl
;
1129 for(int i
= 0; i
< num
; i
++)
1131 if(param
-> class == OBERON_CLASS_VAR_PARAM
)
1134 push_varptr(p
, arg
);
1138 args_cells
+= jvm_cell_size_for_type(arg
-> result
);
1142 param
= param
-> next
;
1147 char * full_name
= jvm_get_field_full_name(desig
-> parent
-> var
);
1148 char * signature
= jvm_get_local_procedure_signature(desig
-> parent
-> var
);
1149 jvm_generate(p
, args_cells
, result_cells
, "invokestatic %s%s", full_name
, signature
);
1153 char * cname
= jvm_get_class_full_name(procsig
);
1154 char * signature
= jvm_get_procedure_signature(procsig
);
1155 jvm_generate(p
, 1 + args_cells
, result_cells
, "invokevirtual %s/invoke%s", cname
, signature
);
1160 oberon_generate_call_proc(oberon_context_t
* ctx
, oberon_expr_t
* desig
)
1162 assert(desig
-> is_item
);
1163 jvm_generate_call_proc(ctx
-> mod
-> gen_mod
-> class -> p
, (oberon_item_t
*) desig
);
1167 oberon_generate_return(oberon_context_t
* ctx
, oberon_expr_t
* expr
)
1174 m
= ctx
-> mod
-> gen_mod
;
1175 p
= m
-> class -> p
;
1180 prefix
= jvm_get_prefix(expr
-> result
);
1181 cell_size
= jvm_cell_size_for_type(expr
-> result
);
1182 jvm_generate(p
, cell_size
, 0, "%creturn", prefix
);
1186 jvm_generate(p
, 0, 0, "return");
1191 jvm_generate_expr_new_pointer(gen_proc_t
* p
, oberon_type_t
* type
, int num
, oberon_expr_t
* arg
)
1193 assert(type
-> class == OBERON_TYPE_POINTER
);
1195 for(int i
= 0; i
< num
; i
++)
1201 jvm_generate_new(p
, type
-> base
, num
);
1205 jvm_generate_cast_prefix(gen_proc_t
* p
, char prefix
, char postfix
)
1207 if((prefix
== 'b' || prefix
== 's') && (postfix
= 'l' || postfix
== 'd'))
1212 if(prefix
== postfix
)
1217 if((prefix
== 'l' || prefix
== 'd') && (postfix
== 'b' || postfix
== 's'))
1219 jvm_generate(p
, 2, 1, "%c2i", prefix
);
1223 int from_cell_size
= jvm_cell_size_for_postfix(prefix
);
1224 int to_cell_size
= jvm_cell_size_for_postfix(postfix
);
1225 jvm_generate(p
, from_cell_size
, to_cell_size
, "%c2%c", prefix
, postfix
);
1229 jvm_generate_cast_type(gen_proc_t
* p
, oberon_type_t
* from
, oberon_type_t
* to
)
1231 if(to
-> class == OBERON_TYPE_RECORD
|| to
-> class == OBERON_TYPE_POINTER
)
1233 if(to
-> class == OBERON_TYPE_POINTER
&& to
-> base
-> class == OBERON_TYPE_RECORD
)
1235 char * full_name
= jvm_get_class_full_name(to
);
1236 jvm_generate(p
, 1, 1, "checkcast %s", full_name
);
1241 char prefix
= jvm_get_prefix(from
);
1242 char postfix
= jvm_get_postfix(to
);
1243 jvm_generate_cast_prefix(p
, prefix
, postfix
);
1248 jvm_generate_hard_cast_type(gen_proc_t
* p
, oberon_type_t
* from
, oberon_type_t
* to
)
1250 if(from
-> class == OBERON_TYPE_REAL
1251 && (to
-> class == OBERON_TYPE_INTEGER
|| to
-> class == OBERON_TYPE_SYSTEM_BYTE
))
1253 char postfix
= jvm_get_postfix(to
);
1254 if(from
-> size
<= 4)
1256 jvm_generate(p
, 1, 1, "invokestatic java/lang/Float/floatToIntBits(F)I");
1257 jvm_generate_cast_prefix(p
, 'i', postfix
);
1261 jvm_generate(p
, 2, 2, "invokestatic java/lang/Double/doubleToIntBits(D)J");
1262 jvm_generate_cast_prefix(p
, 'l', postfix
);
1265 else if((from
-> class == OBERON_TYPE_INTEGER
|| from
-> class == OBERON_TYPE_SYSTEM_BYTE
)
1266 && to
-> class == OBERON_TYPE_REAL
)
1268 char prefix
= jvm_get_prefix(from
);
1271 jvm_generate_cast_prefix(p
, prefix
, 'i');
1272 jvm_generate(p
, 1, 1, "invokestatic java/lang/Float/intBitsToFloat(I)F");
1276 jvm_generate_cast_prefix(p
, prefix
, 'l');
1277 jvm_generate(p
, 2, 2, "invokestatic java/lang/Double/longBitsToDouble(J)D");
1282 jvm_generate_cast_type(p
, from
, to
);
1287 push_item(gen_proc_t
* p
, oberon_item_t
* item
)
1289 switch(item
-> mode
)
1292 if(item
-> var
-> class == OBERON_CLASS_PROC
)
1294 jvm_generate_push_procedure_pointer(p
, item
-> var
);
1298 jvm_generate_load(p
, item
-> var
-> gen_var
);
1305 jvm_generate_push_int_size(p
, item
-> integer
, item
-> result
-> size
);
1308 jvm_generate_call_proc(p
, item
);
1312 char postfix
= jvm_get_postfix(item
-> result
);
1313 int cell_size
= jvm_cell_size_for_postfix(postfix
);
1314 push_item(p
, item
-> parent
);
1315 push_expr(p
, item
-> args
);
1316 jvm_generate(p
, 1 + 1, cell_size
, "%caload", postfix
);
1319 push_item(p
, item
-> parent
);
1320 jvm_generate_load(p
, item
-> var
-> gen_var
);
1323 /* Все объекты в jvm представляются как указатели */
1324 push_item(p
, item
-> parent
);
1327 jvm_generate(p
, 0, 1, "aconst_null");
1330 jvm_generate_expr_new_pointer(p
, item
-> result
, item
-> num_args
, item
-> args
);
1333 jvm_generate_push_float(p
, item
-> real
, item
-> result
-> size
);
1336 jvm_generate_push_string(p
, item
-> string
, item
-> result
-> size
);
1339 push_item(p
, item
-> parent
);
1340 jvm_generate_array_len(p
, item
-> integer
);
1341 jvm_generate_cast_prefix(p
, 'i', jvm_get_postfix(item
-> result
));
1344 gen_error("push_item: unk mode %i", item
-> mode
);
1350 jvm_generate_logical_not(gen_proc_t
* p
)
1352 int label_done
= jvm_new_label_id(p
);
1353 int label_false
= jvm_new_label_id(p
);
1355 jvm_generate(p
, 1, 0, "ifne L%i", label_false
);
1356 jvm_generate(p
, 0, 1, "iconst_1");
1357 jvm_generate(p
, 0, 0, "goto L%i", label_done
);
1358 jvm_generate_label(p
, label_false
);
1359 jvm_generate(p
, 0, 1, "iconst_0");
1360 jvm_generate_label(p
, label_done
);
1364 jvm_generate_abs(gen_proc_t
* p
, char prefix
)
1366 char t
= jvm_get_type_of_prefix(prefix
);
1367 int cell_size
= jvm_cell_size_for_postfix(prefix
);
1368 jvm_generate(p
, cell_size
, cell_size
, "invokestatic java/lang/Math/abs(%c)%c", t
, t
);
1372 jvm_get_compare_postfix(int op
)
1396 gen_error("jvm_generate_compare_op: wat");
1403 jvm_generate_compare_op(gen_proc_t
* p
, oberon_type_t
* t
, int op
)
1405 char prefix
= jvm_get_prefix(t
);
1406 int label_true
= jvm_new_label_id(p
);
1407 int label_done
= jvm_new_label_id(p
);
1408 int cell_size
= jvm_cell_size_for_type(t
);
1409 char * cmpop
= jvm_get_compare_postfix(op
);
1413 jvm_generate(p
, 2 * cell_size
, 1, "lcmp");
1414 jvm_generate(p
, 1, 1, "if%s L%i", cmpop
, label_true
);
1416 else if(prefix
== 'f' || prefix
== 'd')
1419 if(op
== OP_EQ
|| op
== OP_NEQ
|| op
== OP_GRT
|| op
== OP_GEQ
)
1427 jvm_generate(p
, 2 * cell_size
, 1, "%ccmp%c", prefix
, fop
);
1428 jvm_generate(p
, 1, 1, "if%s L%i", cmpop
, label_true
);
1430 else if(prefix
== 'a')
1432 if(t
-> class == OBERON_TYPE_STRING
1433 || (t
-> class == OBERON_TYPE_POINTER
&& t
-> base
-> class == OBERON_TYPE_CHAR
))
1435 jvm_generate(p
, 2, 1, "invokestatic SYSTEM/STRCMP([B[B)I");
1436 jvm_generate(p
, 1, 0, "if%s L%i", cmpop
, label_true
);
1440 jvm_generate(p
, 1, 0, "if_acmp%s L%i", cmpop
, label_true
);
1445 jvm_generate(p
, 2 * cell_size
, 0, "if_%ccmp%s L%i", prefix
, cmpop
, label_true
);
1448 jvm_generate(p
, 0, 1, "iconst_0");
1449 jvm_generate(p
, 0, 0, "goto L%i", label_done
);
1450 jvm_generate_label(p
, label_true
);
1451 jvm_generate(p
, 0, 1, "iconst_1");
1452 jvm_generate_label(p
, label_done
);
1456 jvm_generate_operator(gen_proc_t
* p
, oberon_type_t
* t
, int op
)
1458 char prefix
= jvm_get_prefix(t
);
1459 int cell_size
= jvm_cell_size_for_type(t
);
1462 case OP_UNARY_MINUS
:
1463 jvm_generate(p
, cell_size
, cell_size
, "%cneg", prefix
);
1465 case OP_COMPLEMENTATION
:
1466 jvm_generate_push_int_size(p
, -1, t
-> size
);
1467 jvm_generate(p
, 2 * cell_size
, cell_size
, "%cxor", prefix
);
1470 jvm_generate_logical_not(p
);
1473 jvm_generate_abs(p
, prefix
);
1476 jvm_generate(p
, cell_size
, cell_size
, "invokestatic java/lang/Character/toUpperCase(I)I");
1480 jvm_generate(p
, 2 * cell_size
, cell_size
, "%cadd", prefix
);
1483 jvm_generate(p
, 2 * cell_size
, cell_size
, "%csub", prefix
);
1486 jvm_generate(p
, 2 * cell_size
, cell_size
, "%cmul", prefix
);
1489 jvm_generate(p
, 2 * cell_size
, cell_size
, "%cdiv", prefix
);
1492 jvm_generate(p
, 2 * cell_size
, cell_size
, "%crem", prefix
);
1495 jvm_generate(p
, 2 * cell_size
, cell_size
, "%cor", prefix
);
1497 case OP_INTERSECTION
:
1498 jvm_generate(p
, 2 * cell_size
, cell_size
, "%cand", prefix
);
1501 /* (a - b) == a & ~b */
1502 jvm_generate_push_int_size(p
, -1, t
-> size
);
1503 jvm_generate(p
, 2 * cell_size
, cell_size
, "%cxor", prefix
);
1504 jvm_generate(p
, 2 * cell_size
, cell_size
, "%cand", prefix
);
1506 case OP_SYM_DIFFERENCE
:
1507 jvm_generate(p
, 2 * cell_size
, cell_size
, "%cxor", prefix
);
1516 jvm_generate_compare_op(p
, t
, op
);
1519 gen_error("jvm_generate_operator: unk op %i", op
);
1525 jvm_generate_logical_or(gen_proc_t
* p
, oberon_expr_t
* a
, oberon_expr_t
* b
)
1527 int label_calc_b
= jvm_new_label_id(p
);
1528 int label_done
= jvm_new_label_id(p
);
1530 /* a OR b -- если a, то TRUE, иначе b */
1533 jvm_generate(p
, 1, 0, "ifeq L%i", label_calc_b
);
1534 jvm_generate(p
, 0, 1, "iconst_1");
1535 jvm_generate(p
, 0, 0, "goto L%i", label_done
);
1536 jvm_generate_label(p
, label_calc_b
);
1538 jvm_generate_label(p
, label_done
);
1542 jvm_generate_logical_and(gen_proc_t
* p
, oberon_expr_t
* a
, oberon_expr_t
* b
)
1544 int label_false
= jvm_new_label_id(p
);
1545 int label_done
= jvm_new_label_id(p
);
1547 /* a AND b -- если a, то b, иначе FALSE */
1550 jvm_generate(p
, 1, 0, "ifeq L%i", label_false
);
1552 jvm_generate(p
, 0, 0, "goto L%i", label_done
);
1553 jvm_generate_label(p
, label_false
);
1554 jvm_generate(p
, 0, 1, "iconst_0");
1555 jvm_generate_label(p
, label_done
);
1559 jvm_generate_range(gen_proc_t
* p
, oberon_expr_t
* a
, oberon_expr_t
* b
)
1561 /* { a } == 1 << a */
1562 /* { a..b } == (a <= b) ? ((2 << b) - (1 << a)) : (0); */
1566 oberon_type_t
* type
;
1573 cell_size
= jvm_cell_size_for_type(type
);
1574 prefix
= jvm_get_prefix(type
);
1578 jvm_generate_push_int_size(p
, 1, type
-> size
);
1580 jvm_generate(p
, 2 * cell_size
, cell_size
, "%cshl", prefix
);
1584 ra
= jvm_create_function_temp_var(p
, type
-> gen_type
);
1585 rb
= jvm_create_function_temp_var(p
, type
-> gen_type
);
1586 jvm_generate_var(ra
);
1587 jvm_generate_var(rb
);
1588 jvm_generate_var_initialization(p
, ra
);
1589 jvm_generate_var_initialization(p
, rb
);
1590 label_else
= jvm_new_label_id(p
);
1591 label_end
= jvm_new_label_id(p
);
1594 jvm_generate_store(p
, ra
);
1596 jvm_generate_store(p
, rb
);
1598 jvm_generate_load(p
, ra
);
1599 jvm_generate_load(p
, rb
);
1600 jvm_generate(p
, 2 * cell_size
, 0, "if_%ccmpgt L%i", prefix
, label_else
);
1602 jvm_generate_push_int_size(p
, 2, type
-> size
);
1603 jvm_generate_load(p
, rb
);
1604 jvm_generate(p
, 2 * cell_size
, cell_size
, "%cshl", prefix
);
1605 jvm_generate_push_int_size(p
, 2, type
-> size
);
1606 jvm_generate_load(p
, ra
);
1607 jvm_generate(p
, 2 * cell_size
, cell_size
, "%cshl", prefix
);
1608 jvm_generate(p
, 2 * cell_size
, cell_size
, "%csub", prefix
);
1609 jvm_generate(p
, 0, 0, "goto L%i", label_end
);
1611 jvm_generate_label(p
, label_else
);
1612 jvm_generate_push_int_size(p
, 0, type
-> size
);
1613 jvm_generate_label(p
, label_end
);
1616 /* TODO free registers */
1620 jvm_generate_in(gen_proc_t
* p
, oberon_expr_t
* a
, oberon_expr_t
* b
)
1622 oberon_type_t
* t
= a
-> result
;
1623 int cell_size
= jvm_cell_size_for_type(t
);
1624 char prefix
= jvm_get_prefix(t
);
1625 int label_else
= jvm_new_label_id(p
);
1626 int label_end
= jvm_new_label_id(p
);
1628 /* (a IN b) == (1 << a) & b */
1629 jvm_generate_push_int_size(p
, 1, t
-> size
);
1631 jvm_generate(p
, 2 * cell_size
, cell_size
, "%cshl", prefix
);
1633 jvm_generate(p
, 2 * cell_size
, cell_size
, "%cand", prefix
);
1637 jvm_generate(p
, cell_size
, 0, "lcmp");
1640 jvm_generate(p
, 1, 0, "ifeq L%i", label_else
);
1641 jvm_generate(p
, 0, 1, "iconst_1");
1642 jvm_generate(p
, 0, 0, "goto L%i", label_end
);
1643 jvm_generate_label(p
, label_else
);
1644 jvm_generate(p
, 0, 1, "iconst_0");
1645 jvm_generate_label(p
, label_end
);
1649 jvm_generate_shift(gen_proc_t
* p
, int op
, oberon_expr_t
* a
, oberon_expr_t
* b
)
1651 oberon_type_t
* t
= a
-> result
;
1652 int cell_size
= jvm_cell_size_for_type(t
);
1653 char prefix
= jvm_get_prefix(t
);
1654 char dt
= jvm_get_type_of_prefix(prefix
);
1657 jvm_generate_cast_type(p
, a
-> result
, t
);
1659 jvm_generate_cast_type(p
, b
-> result
, t
);
1674 gen_error("jvm_generate_shift: invalid op %i", op
);
1677 jvm_generate(p
, 2 * cell_size
, cell_size
, "invokestatic SYSTEM/%s(%c%c)%c", opname
, dt
, dt
, dt
);
1681 jvm_generate_entier(gen_proc_t
* p
, oberon_expr_t
* x
, oberon_type_t
* res
)
1683 char prefix
= jvm_get_prefix(x
-> result
);
1684 char postfix
= jvm_get_postfix(res
);
1687 jvm_generate_cast_prefix(p
, prefix
, 'd');
1688 jvm_generate(p
, 2, 2, "invokestatic java/lang/Math/floor(D)D");
1689 jvm_generate_cast_prefix(p
, 'd', postfix
);
1693 push_operator(gen_proc_t
* p
, oberon_oper_t
* oper
)
1695 oberon_type_t
* preq
= oper
-> left
-> result
;
1696 int op
= oper
-> op
;
1700 push_expr(p
, oper
-> left
);
1701 jvm_generate_cast_type(p
, oper
-> left
-> result
, oper
-> result
);
1704 push_expr(p
, oper
-> left
);
1705 jvm_generate_hard_cast_type(p
, oper
-> left
-> result
, oper
-> result
);
1707 case OP_COMPLEMENTATION
:
1708 case OP_UNARY_MINUS
:
1712 push_expr(p
, oper
-> left
);
1713 jvm_generate_operator(p
, preq
, op
);
1716 jvm_generate_entier(p
, oper
-> left
, oper
-> result
);
1726 case OP_INTERSECTION
:
1728 case OP_SYM_DIFFERENCE
:
1736 push_expr(p
, oper
-> left
);
1737 push_expr(p
, oper
-> right
);
1738 jvm_generate_operator(p
, preq
, op
);
1742 jvm_generate_logical_or(p
, oper
-> left
, oper
-> right
);
1745 jvm_generate_logical_and(p
, oper
-> left
, oper
-> right
);
1749 preq
= oper
-> right
-> result
;
1750 char * cname
= jvm_get_class_full_name(preq
);
1751 push_expr(p
, oper
-> left
);
1752 jvm_generate(p
, 1, 1, "instanceof %s", cname
);
1755 jvm_generate_range(p
, oper
-> left
, oper
-> right
);
1758 jvm_generate_in(p
, oper
-> left
, oper
-> right
);
1764 jvm_generate_shift(p
, op
, oper
-> left
, oper
-> right
);
1767 gen_error("push_oper: unk op %i", op
);
1773 push_expr(gen_proc_t
* p
, oberon_expr_t
* expr
)
1777 push_item(p
, (oberon_item_t
*) expr
);
1781 push_operator(p
, (oberon_oper_t
*) expr
);
1786 store_expr(gen_proc_t
* p
, oberon_expr_t
* dst
, oberon_expr_t
* src
)
1788 assert(dst
-> is_item
);
1789 oberon_item_t
* item
= (oberon_item_t
*) dst
;
1791 if(dst
-> result
-> class == OBERON_TYPE_ARRAY
1792 || src
-> result
-> class == OBERON_TYPE_ARRAY
)
1796 jvm_generate_copy_array(p
, dst
-> result
);
1798 else if(dst
-> result
-> class == OBERON_TYPE_RECORD
1799 || src
-> result
-> class == OBERON_TYPE_RECORD
)
1803 jvm_generate_copy_record(p
, dst
-> result
);
1805 else switch(item
-> mode
)
1808 jvm_generate_ldst_prepare(p
, item
-> var
-> gen_var
);
1810 jvm_generate_store(p
, item
-> var
-> gen_var
);
1814 char postfix
= jvm_get_postfix(src
-> result
);
1815 int cell_size
= jvm_cell_size_for_postfix(postfix
);
1816 assert(item
-> parent
-> is_item
);
1817 push_item(p
, (oberon_item_t
*) item
-> parent
);
1818 push_expr(p
, item
-> args
);
1820 jvm_generate(p
, 1 + 1 + cell_size
, 0, "%castore", postfix
);
1823 assert(item
-> parent
-> is_item
);
1824 push_item(p
, (oberon_item_t
*) item
-> parent
);
1825 jvm_generate_ldst_prepare(p
, item
-> var
-> gen_var
);
1827 jvm_generate_store(p
, item
-> var
-> gen_var
);
1830 gen_error("store_expr: unk mode %i", item
-> mode
);
1836 oberon_generate_assign(oberon_context_t
* ctx
, oberon_expr_t
* src
, oberon_expr_t
* dst
)
1841 m
= ctx
-> mod
-> gen_mod
;
1842 p
= m
-> class -> p
;
1844 store_expr(p
, dst
, src
);
1848 oberon_generate_copy(oberon_context_t
* ctx
, oberon_expr_t
* src
, oberon_expr_t
* dst
)
1854 m
= ctx
-> mod
-> gen_mod
;
1855 p
= m
-> class -> p
;
1860 desc
= jvm_get_descriptor(dst
-> result
);
1862 jvm_generate(p
, 2, 0, "invokestatic SYSTEM/COPY(%s%s)V", desc
, desc
);
1866 oberon_generate_assert(oberon_context_t
* ctx
, oberon_expr_t
* cond
)
1871 m
= ctx
-> mod
-> gen_mod
;
1872 p
= m
-> class -> p
;
1875 jvm_generate(p
, 1, 0, "invokestatic SYSTEM/ASSERT(Z)V");
1879 oberon_generate_assert_n(oberon_context_t
* ctx
, oberon_expr_t
* cond
, int64_t n
)
1884 m
= ctx
-> mod
-> gen_mod
;
1885 p
= m
-> class -> p
;
1888 jvm_generate_push_int_size(p
, n
, 8);
1889 jvm_generate(p
, 1 + 2, 0, "invokestatic SYSTEM/ASSERT(ZJ)V");
1893 oberon_generate_trap(oberon_context_t
* ctx
, int64_t n
)
1898 m
= ctx
-> mod
-> gen_mod
;
1899 p
= m
-> class -> p
;
1901 jvm_generate_push_int_size(p
, n
, 8);
1902 jvm_generate(p
, 2, 0, "invokestatic SYSTEM/TRAP(J)V");
1906 oberon_generate_halt(oberon_context_t
* ctx
, int64_t n
)
1911 m
= ctx
-> mod
-> gen_mod
;
1912 p
= m
-> class -> p
;
1914 jvm_generate_push_int_size(p
, n
, 8);
1915 jvm_generate(p
, 2, 0, "invokestatic SYSTEM/HALT(J)V");
1919 oberon_set_out_directory(oberon_context_t
* ctx
, const char * path
)
1923 c
= ctx
-> gen_context
;
1925 c
-> dir
= new_string(path
);