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
);
586 num
= rec
-> num_decl
;
588 for(int i
= 0; i
< num
; i
++)
590 if(field
-> type
-> class == OBERON_TYPE_RECORD
)
592 jvm_generate_load(p
, copy_dst
);
593 jvm_generate_load(p
, field
-> gen_var
);
594 jvm_generate_load(p
, copy_src
);
595 jvm_generate_load(p
, field
-> gen_var
);
596 jvm_generate_copy_record(p
, field
-> type
);
598 else if(field
-> type
-> class == OBERON_TYPE_ARRAY
)
600 jvm_generate_load(p
, copy_dst
);
601 jvm_generate_load(p
, field
-> gen_var
);
602 jvm_generate_load(p
, copy_src
);
603 jvm_generate_load(p
, field
-> gen_var
);
604 jvm_generate_copy_array(p
, field
-> type
);
608 jvm_generate_load(p
, copy_dst
);
609 jvm_generate_ldst_prepare(p
, field
-> gen_var
);
610 jvm_generate_load(p
, copy_src
);
611 jvm_generate_load(p
, field
-> gen_var
);
612 jvm_generate_store(p
, field
-> gen_var
);
614 field
= field
-> next
;
616 jvm_generate(p
, 0, 0, "return");
617 jvm_generate_function_end(p
);
619 jvm_destroy_class(class);
623 oberon_generator_init_var(oberon_context_t
* ctx
, oberon_object_t
* var
)
626 m
= ctx
-> mod
-> gen_mod
;
628 struct gen_class
* class;
632 struct gen_class
* c
;
633 char * name
= var
-> name
;
634 gen_type_t
* t
= var
-> type
-> gen_type
;
639 gen_error("uninitialized type class %i", var
-> type
-> class);
644 case OBERON_CLASS_VAR_PARAM
:
645 p
= var
-> parent
-> gen_proc
;
646 var
-> gen_var
= jvm_create_function_var(p
, JVM_STORAGE_FRAME_PARAM_VARPTR
, name
, t
);
648 case OBERON_CLASS_PARAM
:
649 p
= var
-> parent
-> gen_proc
;
650 var
-> gen_var
= jvm_create_function_var(p
, JVM_STORAGE_FRAME_PARAM_VAR
, name
, t
);
652 case OBERON_CLASS_FIELD
:
653 c
= var
-> parent_type
-> gen_type
-> class;
654 var
-> gen_var
= jvm_create_class_var(c
, JVM_STORAGE_FIELD_VAR
, name
, t
);
656 case OBERON_CLASS_VAR
:
659 p
= var
-> parent
-> gen_proc
;
660 var
-> gen_var
= jvm_create_function_var(p
, JVM_STORAGE_FRAME_VAR
, name
, t
);
664 var
-> gen_var
= jvm_create_class_var(class, JVM_STORAGE_STATIC_VAR
, name
, t
);
665 jvm_generate_var(var
-> gen_var
);
669 gen_error("oberon_generator_init_var: unk var class %i", var
-> class);
675 oberon_generator_init_temp_var(oberon_context_t
* ctx
, oberon_object_t
* var
)
677 assert(var
-> class == OBERON_CLASS_VAR
);
680 m
= ctx
-> mod
-> gen_mod
;
686 t
= var
-> type
-> gen_type
;
688 var
-> gen_var
= jvm_create_function_temp_var(p
, t
);
689 jvm_generate_var(var
-> gen_var
);
690 jvm_generate_var_initialization(p
, var
-> gen_var
);
694 oberon_generator_init_proc(oberon_context_t
* ctx
, oberon_object_t
* proc
)
696 struct gen_class
* class = proc
-> module
-> gen_mod
-> class;
697 proc
-> gen_proc
= jvm_create_proc(class);
698 proc
-> gen_proc
-> full_name
= jvm_get_field_full_name_safe(proc
);
699 jvm_create_static_links(proc
);
703 oberon_generator_init_module(oberon_context_t
* ctx
, oberon_module_t
* mod
)
705 gen_module_t
* m
= GC_MALLOC(sizeof *m
);
706 memset(m
, 0, sizeof *m
);
710 c
= ctx
-> gen_context
;
712 struct gen_class
* class;
713 class = jvm_create_class(c
-> dir
, mod
-> name
);
715 fprintf(class -> fp
, ".source %s\n", mod
-> name
);
716 fprintf(class -> fp
, ".class %s\n", mod
-> name
);
717 fprintf(class -> fp
, ".super java/lang/Object\n\n");
719 fprintf(class -> fp
, ".field private static $INITIALIZED$ Z\n\n");
727 oberon_generator_fini_module(oberon_module_t
* mod
)
729 jvm_destroy_class(mod
-> gen_mod
-> class);
733 push_expr(gen_proc_t
* p
, oberon_expr_t
* expr
);
736 oberon_generate_static_initialization(gen_proc_t
* p
, oberon_object_t
* x
)
738 if(x
-> type
-> class == OBERON_TYPE_ARRAY
739 || x
-> type
-> class == OBERON_TYPE_RECORD
)
741 jvm_generate_ldst_prepare(p
, x
-> gen_var
);
742 jvm_generate_new(p
, x
-> type
, 0);
743 jvm_generate_store(p
, x
-> gen_var
);
748 oberon_generate_begin_module(oberon_context_t
* ctx
)
752 struct gen_class
* class;
754 class = ctx
-> mod
-> gen_mod
-> class;
756 p
= jvm_create_proc(class);
757 jvm_generate_function_header(p
, "public static", "BEGIN", "()V");
759 label_cont
= jvm_new_label_id(p
);
760 jvm_generate(p
, 0, 1, "getstatic %s/$INITIALIZED$ Z", class -> full_name
);
761 jvm_generate(p
, 1, 0, "ifeq L%i", label_cont
);
762 jvm_generate(p
, 0, 0, "return");
763 jvm_generate_label(p
, label_cont
);
765 jvm_generate(p
, 0, 1, "iconst_1");
766 jvm_generate(p
, 1, 0, "putstatic %s/$INITIALIZED$ Z", class -> full_name
);
768 /* Инициализация переменных объявленных в модуле */
769 oberon_object_t
* x
= ctx
-> mod
-> decl
-> list
-> next
;
772 if(x
-> class == OBERON_CLASS_MODULE
)
774 if(!x
-> module
-> intrinsic
)
776 jvm_generate(p
, 0, 0, "invokestatic %s/BEGIN()V", x
-> module
-> gen_mod
-> class -> full_name
);
779 else if(x
-> class == OBERON_CLASS_VAR
)
781 jvm_generate_var_initialization(p
, x
-> gen_var
);
782 oberon_generate_static_initialization(p
, x
);
790 oberon_generate_end_module(oberon_context_t
* ctx
)
792 struct gen_class
* class = ctx
-> mod
-> gen_mod
-> class;
793 gen_proc_t
* p
= class -> p
;
795 jvm_generate(p
, 0, 0, "return");
796 jvm_generate_function_end(class -> p
);
798 p
= jvm_create_proc(class);
799 jvm_generate_function_header(p
, "private", "<init>", "()V");
800 jvm_alloc_register_untyped(p
-> rf
, false);
801 jvm_generate(p
, 0, 1, "aload_0");
802 jvm_generate(p
, 1, 0, "invokespecial java/lang/Object/<init>()V");
803 jvm_generate(p
, 0, 0, "return");
804 jvm_generate_function_end(class -> p
);
808 * Генерирует код для получения размера измерения массива
809 * Аналог Обероновского LEN(v, n); где n = 0 - первое измерение.
814 jvm_generate_array_len(gen_proc_t
* p
, int dim
)
818 jvm_generate(p
, 0, 1, "iconst_0");
819 jvm_generate(p
, 2, 1, "aaload");
822 jvm_generate(p
, 1, 1, "arraylength");
826 jvm_generate_array_duplicate_and_replace(gen_proc_t
* p
, gen_var_t
* v
, oberon_type_t
* arr
)
828 jvm_generate_ldst_prepare(p
, v
);
831 oberon_type_t
* base
= arr
;
832 while(base
-> class == OBERON_TYPE_ARRAY
)
834 if(base
-> size
== 0)
836 jvm_generate_load(p
, v
);
837 jvm_generate_array_len(p
, dim
);
843 jvm_generate_new(p
, arr
, dim
);
844 jvm_generate(p
, 1, 2, "dup");
845 jvm_generate_load(p
, v
);
846 jvm_generate_copy_array(p
, arr
);
847 jvm_generate_store(p
, v
);
851 jvm_generate_record_duplicate_and_replace(gen_proc_t
* p
, gen_var_t
* v
, oberon_type_t
* rec
)
853 jvm_generate_ldst_prepare(p
, v
);
854 jvm_generate_new(p
, rec
, 0);
855 jvm_generate(p
, 1, 2, "dup");
856 jvm_generate_load(p
, v
);
857 jvm_generate_copy_record(p
, rec
);
858 jvm_generate_store(p
, v
);
862 jvm_generate_local_object(gen_proc_t
* p
, oberon_object_t
* x
)
865 struct gen_class
* class;
870 // Убеждаемся что сейчас находимся в функции
876 case OBERON_CLASS_VAR_PARAM
:
877 case OBERON_CLASS_PARAM
:
878 case OBERON_CLASS_VAR
:
881 case OBERON_CLASS_CONST
:
882 case OBERON_CLASS_TYPE
:
883 case OBERON_CLASS_PROC
:
886 gen_error("jvm_generate_local_initialization: wat class %i", x
-> class);
892 jvm_generate_local_initialization(gen_proc_t
* p
, oberon_object_t
* x
)
895 struct gen_class
* class;
900 // Убеждаемся что сейчас находимся в функции
906 case OBERON_CLASS_VAR_PARAM
:
907 jvm_generate_var_initialization(p
, v
);
909 case OBERON_CLASS_PARAM
:
910 jvm_generate_var_initialization(p
, v
);
911 if(x
-> type
-> class == OBERON_TYPE_ARRAY
)
913 jvm_generate_array_duplicate_and_replace(p
, v
, x
-> type
);
915 else if(x
-> type
-> class == OBERON_TYPE_RECORD
)
917 jvm_generate_record_duplicate_and_replace(p
, v
, x
-> type
);
920 case OBERON_CLASS_VAR
:
921 jvm_generate_var_initialization(p
, v
);
922 oberon_generate_static_initialization(p
, x
);
924 case OBERON_CLASS_CONST
:
925 case OBERON_CLASS_TYPE
:
926 case OBERON_CLASS_PROC
:
929 gen_error("jvm_generate_local_initialization: wat class %i", x
-> class);
935 oberon_generate_begin_proc(oberon_context_t
* ctx
, oberon_object_t
* proc
)
940 oberon_object_t
* var
;
942 p
= proc
-> gen_proc
;
946 signature
= jvm_get_local_procedure_signature(proc
);
950 oberon_generate_procedure_pointer_class(p
-> class -> dir
, proc
);
951 signature
= jvm_get_procedure_signature(proc
-> type
);
954 name
= jvm_get_name(proc
);
955 jvm_generate_function_header(p
, "public static", name
, signature
);
959 jvm_generate_staticlinks(proc
);
962 jvm_generate_procedure_frame(proc
);
964 /* Создание параметров и переменных */
965 var
= proc
-> scope
-> list
-> next
;
968 jvm_generate_local_object(p
, var
);
972 jvm_generate_frame_initialization(p
);
974 /* Инициализация парамеров и переменных */
975 var
= proc
-> scope
-> list
-> next
;
978 jvm_generate_local_initialization(p
, var
);
984 oberon_generate_end_proc(oberon_context_t
* ctx
)
989 m
= ctx
-> mod
-> gen_mod
;
992 oberon_generate_trap(ctx
, -4);
993 jvm_generate_function_end(p
);
997 oberon_generator_reserve_label(oberon_context_t
* ctx
)
1003 m
= ctx
-> mod
-> gen_mod
;
1004 p
= m
-> class -> p
;
1006 l
= GC_MALLOC(sizeof *l
);
1007 memset(l
, 0, sizeof *l
);
1009 l
-> id
= jvm_new_label_id(p
);
1014 oberon_generate_label(oberon_context_t
* ctx
, gen_label_t
* l
)
1019 m
= ctx
-> mod
-> gen_mod
;
1020 p
= m
-> class -> p
;
1022 jvm_generate_label(p
, l
-> id
);
1026 oberon_generate_goto(oberon_context_t
* ctx
, gen_label_t
* l
)
1031 m
= ctx
-> mod
-> gen_mod
;
1032 p
= m
-> class -> p
;
1034 jvm_generate(p
, 0, 0, "goto L%i", l
-> id
);
1038 oberon_generate_branch(oberon_context_t
* ctx
, oberon_expr_t
* cond
, bool gotoif
, gen_label_t
* l
)
1043 m
= ctx
-> mod
-> gen_mod
;
1044 p
= m
-> class -> p
;
1050 /* переход если false */
1051 jvm_generate(p
, 1, 0, "ifeq L%i", l
-> id
);
1055 /* переход если true */
1056 jvm_generate(p
, 1, 0, "ifne L%i", l
-> id
);
1061 push_varptr(gen_proc_t
* p
, oberon_expr_t
* expr
)
1063 assert(expr
-> is_item
);
1065 switch(expr
-> item
.mode
)
1068 jvm_generate_ldst_prepare(p
, expr
-> item
.var
-> gen_var
);
1071 push_item(p
, expr
-> item
.parent
);
1072 push_expr(p
, expr
-> item
.args
);
1075 push_item(p
, expr
-> item
.parent
);
1076 jvm_generate_ldst_prepare(p
, expr
-> item
.var
-> gen_var
);
1079 push_varptr(p
, (oberon_expr_t
*) expr
-> item
.parent
);
1082 gen_error("push_varptr: wat %i", expr
-> item
.mode
);
1088 jvm_generate_call_proc(gen_proc_t
* p
, oberon_item_t
* desig
)
1090 assert(desig
-> var
== NULL
);
1091 assert(desig
-> mode
== MODE_CALL
);
1093 bool direct_call
= false;
1094 if(desig
-> parent
-> mode
== MODE_VAR
)
1096 if(desig
-> parent
-> var
-> class == OBERON_CLASS_PROC
)
1102 oberon_type_t
* procsig
;
1103 procsig
= desig
-> parent
-> result
;
1105 if(direct_call
== false)
1107 /* Загружаем указатель на процедуру */
1108 push_item(p
, desig
-> parent
);
1113 jvm_generate_push_static_links(p
, desig
-> parent
-> var
);
1117 int result_cells
= jvm_cell_size_for_type(procsig
-> base
);
1119 int num
= desig
-> num_args
;
1120 oberon_expr_t
* arg
= desig
-> args
;
1121 oberon_object_t
* param
= procsig
-> decl
;
1122 for(int i
= 0; i
< num
; i
++)
1124 if(param
-> class == OBERON_CLASS_VAR_PARAM
)
1127 push_varptr(p
, arg
);
1131 args_cells
+= jvm_cell_size_for_type(arg
-> result
);
1135 param
= param
-> next
;
1140 char * full_name
= jvm_get_field_full_name(desig
-> parent
-> var
);
1141 char * signature
= jvm_get_local_procedure_signature(desig
-> parent
-> var
);
1142 jvm_generate(p
, args_cells
, result_cells
, "invokestatic %s%s", full_name
, signature
);
1146 char * cname
= jvm_get_class_full_name(procsig
);
1147 char * signature
= jvm_get_procedure_signature(procsig
);
1148 jvm_generate(p
, 1 + args_cells
, result_cells
, "invokevirtual %s/invoke%s", cname
, signature
);
1153 oberon_generate_call_proc(oberon_context_t
* ctx
, oberon_expr_t
* desig
)
1155 assert(desig
-> is_item
);
1156 jvm_generate_call_proc(ctx
-> mod
-> gen_mod
-> class -> p
, (oberon_item_t
*) desig
);
1160 oberon_generate_return(oberon_context_t
* ctx
, oberon_expr_t
* expr
)
1167 m
= ctx
-> mod
-> gen_mod
;
1168 p
= m
-> class -> p
;
1173 prefix
= jvm_get_prefix(expr
-> result
);
1174 cell_size
= jvm_cell_size_for_type(expr
-> result
);
1175 jvm_generate(p
, cell_size
, 0, "%creturn", prefix
);
1179 jvm_generate(p
, 0, 0, "return");
1184 jvm_generate_expr_new_pointer(gen_proc_t
* p
, oberon_type_t
* type
, int num
, oberon_expr_t
* arg
)
1186 assert(type
-> class == OBERON_TYPE_POINTER
);
1188 for(int i
= 0; i
< num
; i
++)
1194 jvm_generate_new(p
, type
-> base
, num
);
1198 jvm_generate_cast_prefix(gen_proc_t
* p
, char prefix
, char postfix
)
1200 if(prefix
== postfix
)
1205 int from_cell_size
= jvm_cell_size_for_postfix(prefix
);
1206 int to_cell_size
= jvm_cell_size_for_postfix(postfix
);
1207 jvm_generate(p
, from_cell_size
, to_cell_size
, "%c2%c", prefix
, postfix
);
1211 jvm_generate_cast_type(gen_proc_t
* p
, oberon_type_t
* from
, oberon_type_t
* to
)
1213 if(to
-> class == OBERON_TYPE_RECORD
|| to
-> class == OBERON_TYPE_POINTER
)
1215 if(to
-> class == OBERON_TYPE_POINTER
&& to
-> base
-> class == OBERON_TYPE_RECORD
)
1217 char * full_name
= jvm_get_class_full_name(to
);
1218 jvm_generate(p
, 1, 1, "checkcast %s", full_name
);
1223 char prefix
= jvm_get_prefix(from
);
1224 char postfix
= jvm_get_postfix(to
);
1225 jvm_generate_cast_prefix(p
, prefix
, postfix
);
1230 jvm_generate_hard_cast_type(gen_proc_t
* p
, oberon_type_t
* from
, oberon_type_t
* to
)
1232 if(from
-> class == OBERON_TYPE_REAL
1233 && (to
-> class == OBERON_TYPE_INTEGER
|| to
-> class == OBERON_TYPE_SYSTEM_BYTE
))
1235 char postfix
= jvm_get_postfix(to
);
1236 if(from
-> size
<= 4)
1238 jvm_generate(p
, 1, 1, "invokestatic java/lang/Float/floatToIntBits(F)I");
1239 jvm_generate_cast_prefix(p
, 'i', postfix
);
1243 jvm_generate(p
, 2, 2, "invokestatic java/lang/Double/doubleToIntBits(D)J");
1244 jvm_generate_cast_prefix(p
, 'l', postfix
);
1247 else if((from
-> class == OBERON_TYPE_INTEGER
|| from
-> class == OBERON_TYPE_SYSTEM_BYTE
)
1248 && to
-> class == OBERON_TYPE_REAL
)
1250 char prefix
= jvm_get_prefix(from
);
1253 jvm_generate_cast_prefix(p
, prefix
, 'i');
1254 jvm_generate(p
, 1, 1, "invokestatic java/lang/Float/intBitsToFloat(I)F");
1258 jvm_generate_cast_prefix(p
, prefix
, 'l');
1259 jvm_generate(p
, 2, 2, "invokestatic java/lang/Double/longBitsToDouble(J)D");
1264 jvm_generate_cast_type(p
, from
, to
);
1269 push_item(gen_proc_t
* p
, oberon_item_t
* item
)
1271 switch(item
-> mode
)
1274 if(item
-> var
-> class == OBERON_CLASS_PROC
)
1276 jvm_generate_push_procedure_pointer(p
, item
-> var
);
1280 jvm_generate_load(p
, item
-> var
-> gen_var
);
1287 jvm_generate_push_int_size(p
, item
-> integer
, item
-> result
-> size
);
1290 jvm_generate_call_proc(p
, item
);
1294 char postfix
= jvm_get_postfix(item
-> result
);
1295 int cell_size
= jvm_cell_size_for_postfix(postfix
);
1296 push_item(p
, item
-> parent
);
1297 push_expr(p
, item
-> args
);
1298 jvm_generate(p
, 1 + 1, cell_size
, "%caload", postfix
);
1301 push_item(p
, item
-> parent
);
1302 jvm_generate_load(p
, item
-> var
-> gen_var
);
1305 /* Все объекты в jvm представляются как указатели */
1306 push_item(p
, item
-> parent
);
1309 jvm_generate(p
, 0, 1, "aconst_null");
1312 jvm_generate_expr_new_pointer(p
, item
-> result
, item
-> num_args
, item
-> args
);
1315 jvm_generate_push_float(p
, item
-> real
, item
-> result
-> size
);
1318 jvm_generate_push_string(p
, item
-> string
, item
-> result
-> size
);
1321 push_item(p
, item
-> parent
);
1322 jvm_generate_array_len(p
, item
-> integer
);
1323 jvm_generate_cast_prefix(p
, 'i', jvm_get_postfix(item
-> result
));
1326 gen_error("push_item: unk mode %i", item
-> mode
);
1332 jvm_generate_logical_not(gen_proc_t
* p
)
1334 int label_done
= jvm_new_label_id(p
);
1335 int label_false
= jvm_new_label_id(p
);
1337 jvm_generate(p
, 1, 0, "ifne L%i", label_false
);
1338 jvm_generate(p
, 0, 1, "iconst_1");
1339 jvm_generate(p
, 0, 0, "goto L%i", label_done
);
1340 jvm_generate_label(p
, label_false
);
1341 jvm_generate(p
, 0, 1, "iconst_0");
1342 jvm_generate_label(p
, label_done
);
1346 jvm_generate_abs(gen_proc_t
* p
, char prefix
)
1348 char t
= jvm_get_type_of_prefix(prefix
);
1349 int cell_size
= jvm_cell_size_for_postfix(prefix
);
1350 jvm_generate(p
, cell_size
, cell_size
, "invokestatic java/lang/Math/abs(%c)%c", t
, t
);
1354 jvm_get_compare_postfix(int op
)
1378 gen_error("jvm_generate_compare_op: wat");
1385 jvm_generate_compare_op(gen_proc_t
* p
, oberon_type_t
* t
, int op
)
1387 char prefix
= jvm_get_prefix(t
);
1388 int label_true
= jvm_new_label_id(p
);
1389 int label_done
= jvm_new_label_id(p
);
1390 int cell_size
= jvm_cell_size_for_type(t
);
1391 char * cmpop
= jvm_get_compare_postfix(op
);
1395 jvm_generate(p
, 2 * cell_size
, 1, "lcmp");
1396 jvm_generate(p
, 1, 1, "if%s L%i", cmpop
, label_true
);
1398 else if(prefix
== 'f' || prefix
== 'd')
1401 if(op
== OP_EQ
|| op
== OP_NEQ
|| op
== OP_GRT
|| op
== OP_GEQ
)
1409 jvm_generate(p
, 2 * cell_size
, 1, "%ccmp%c", prefix
, fop
);
1410 jvm_generate(p
, 1, 1, "if%s L%i", cmpop
, label_true
);
1412 else if(prefix
== 'a')
1414 if(t
-> class == OBERON_TYPE_STRING
1415 || (t
-> class == OBERON_TYPE_POINTER
&& t
-> base
-> class == OBERON_TYPE_CHAR
))
1417 jvm_generate(p
, 2, 1, "invokestatic SYSTEM/STRCMP([B[B)I");
1418 jvm_generate(p
, 1, 0, "if%s L%i", cmpop
, label_true
);
1422 jvm_generate(p
, 1, 0, "if_acmp%s L%i", cmpop
, label_true
);
1427 jvm_generate(p
, 2 * cell_size
, 0, "if_%ccmp%s L%i", prefix
, cmpop
, label_true
);
1430 jvm_generate(p
, 0, 1, "iconst_0");
1431 jvm_generate(p
, 0, 0, "goto L%i", label_done
);
1432 jvm_generate_label(p
, label_true
);
1433 jvm_generate(p
, 0, 1, "iconst_1");
1434 jvm_generate_label(p
, label_done
);
1438 jvm_generate_operator(gen_proc_t
* p
, oberon_type_t
* t
, int op
)
1440 char prefix
= jvm_get_prefix(t
);
1441 int cell_size
= jvm_cell_size_for_type(t
);
1444 case OP_UNARY_MINUS
:
1445 jvm_generate(p
, cell_size
, cell_size
, "%cneg", prefix
);
1447 case OP_COMPLEMENTATION
:
1448 jvm_generate_push_int_size(p
, -1, t
-> size
);
1449 jvm_generate(p
, 2 * cell_size
, cell_size
, "%cxor", prefix
);
1452 jvm_generate_logical_not(p
);
1455 jvm_generate_abs(p
, prefix
);
1458 jvm_generate(p
, cell_size
, cell_size
, "invokestatic java/lang/Character/toUpperCase(I)I");
1462 jvm_generate(p
, 2 * cell_size
, cell_size
, "%cadd", prefix
);
1465 jvm_generate(p
, 2 * cell_size
, cell_size
, "%csub", prefix
);
1468 jvm_generate(p
, 2 * cell_size
, cell_size
, "%cmul", prefix
);
1471 jvm_generate(p
, 2 * cell_size
, cell_size
, "%cdiv", prefix
);
1474 jvm_generate(p
, 2 * cell_size
, cell_size
, "%crem", prefix
);
1477 jvm_generate(p
, 2 * cell_size
, cell_size
, "%cor", prefix
);
1479 case OP_INTERSECTION
:
1480 jvm_generate(p
, 2 * cell_size
, cell_size
, "%cand", prefix
);
1483 /* (a - b) == a & ~b */
1484 jvm_generate_push_int_size(p
, -1, t
-> size
);
1485 jvm_generate(p
, 2 * cell_size
, cell_size
, "%cxor", prefix
);
1486 jvm_generate(p
, 2 * cell_size
, cell_size
, "%cand", prefix
);
1488 case OP_SYM_DIFFERENCE
:
1489 jvm_generate(p
, 2 * cell_size
, cell_size
, "%cxor", prefix
);
1498 jvm_generate_compare_op(p
, t
, op
);
1501 gen_error("jvm_generate_operator: unk op %i", op
);
1507 jvm_generate_logical_or(gen_proc_t
* p
, oberon_expr_t
* a
, oberon_expr_t
* b
)
1509 int label_calc_b
= jvm_new_label_id(p
);
1510 int label_done
= jvm_new_label_id(p
);
1512 /* a OR b -- если a, то TRUE, иначе b */
1515 jvm_generate(p
, 1, 0, "ifeq L%i", label_calc_b
);
1516 jvm_generate(p
, 0, 1, "iconst_1");
1517 jvm_generate(p
, 0, 0, "goto L%i", label_done
);
1518 jvm_generate_label(p
, label_calc_b
);
1520 jvm_generate_label(p
, label_done
);
1524 jvm_generate_logical_and(gen_proc_t
* p
, oberon_expr_t
* a
, oberon_expr_t
* b
)
1526 int label_false
= jvm_new_label_id(p
);
1527 int label_done
= jvm_new_label_id(p
);
1529 /* a AND b -- если a, то b, иначе FALSE */
1532 jvm_generate(p
, 1, 0, "ifeq L%i", label_false
);
1534 jvm_generate(p
, 0, 0, "goto L%i", label_done
);
1535 jvm_generate_label(p
, label_false
);
1536 jvm_generate(p
, 0, 1, "iconst_0");
1537 jvm_generate_label(p
, label_done
);
1541 jvm_generate_range(gen_proc_t
* p
, oberon_expr_t
* a
, oberon_expr_t
* b
)
1543 /* { a } == 1 << a */
1544 /* { a..b } == (a <= b) ? ((2 << b) - (1 << a)) : (0); */
1548 oberon_type_t
* type
;
1555 cell_size
= jvm_cell_size_for_type(type
);
1556 prefix
= jvm_get_prefix(type
);
1560 jvm_generate_push_int_size(p
, 1, type
-> size
);
1562 jvm_generate(p
, 2 * cell_size
, cell_size
, "%cshl", prefix
);
1566 ra
= jvm_create_function_temp_var(p
, type
-> gen_type
);
1567 rb
= jvm_create_function_temp_var(p
, type
-> gen_type
);
1568 jvm_generate_var(ra
);
1569 jvm_generate_var(rb
);
1570 jvm_generate_var_initialization(p
, ra
);
1571 jvm_generate_var_initialization(p
, rb
);
1572 label_else
= jvm_new_label_id(p
);
1573 label_end
= jvm_new_label_id(p
);
1576 jvm_generate_store(p
, ra
);
1578 jvm_generate_store(p
, rb
);
1580 jvm_generate_load(p
, ra
);
1581 jvm_generate_load(p
, rb
);
1582 jvm_generate(p
, 2 * cell_size
, 0, "if_%ccmpgt L%i", prefix
, label_else
);
1584 jvm_generate_push_int_size(p
, 2, type
-> size
);
1585 jvm_generate_load(p
, rb
);
1586 jvm_generate(p
, 2 * cell_size
, cell_size
, "%cshl", prefix
);
1587 jvm_generate_push_int_size(p
, 2, type
-> size
);
1588 jvm_generate_load(p
, ra
);
1589 jvm_generate(p
, 2 * cell_size
, cell_size
, "%cshl", prefix
);
1590 jvm_generate(p
, 2 * cell_size
, cell_size
, "%csub", prefix
);
1591 jvm_generate(p
, 0, 0, "goto L%i", label_end
);
1593 jvm_generate_label(p
, label_else
);
1594 jvm_generate_push_int_size(p
, 0, type
-> size
);
1595 jvm_generate_label(p
, label_end
);
1598 /* TODO free registers */
1602 jvm_generate_in(gen_proc_t
* p
, oberon_expr_t
* a
, oberon_expr_t
* b
)
1604 oberon_type_t
* t
= a
-> result
;
1605 int cell_size
= jvm_cell_size_for_type(t
);
1606 char prefix
= jvm_get_prefix(t
);
1607 int label_else
= jvm_new_label_id(p
);
1608 int label_end
= jvm_new_label_id(p
);
1610 /* (a IN b) == (1 << a) & b */
1611 jvm_generate_push_int_size(p
, 1, t
-> size
);
1613 jvm_generate(p
, 2 * cell_size
, cell_size
, "%cshl", prefix
);
1615 jvm_generate(p
, 2 * cell_size
, cell_size
, "%cand", prefix
);
1619 jvm_generate(p
, cell_size
, 0, "lcmp");
1622 jvm_generate(p
, 1, 0, "ifeq L%i", label_else
);
1623 jvm_generate(p
, 0, 1, "iconst_1");
1624 jvm_generate(p
, 0, 0, "goto L%i", label_end
);
1625 jvm_generate_label(p
, label_else
);
1626 jvm_generate(p
, 0, 1, "iconst_0");
1627 jvm_generate_label(p
, label_end
);
1631 jvm_generate_shift(gen_proc_t
* p
, int op
, 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 char dt
= jvm_get_type_of_prefix(prefix
);
1639 jvm_generate_cast_type(p
, a
-> result
, t
);
1641 jvm_generate_cast_type(p
, b
-> result
, t
);
1656 gen_error("jvm_generate_shift: invalid op %i", op
);
1659 jvm_generate(p
, 2 * cell_size
, cell_size
, "invokestatic SYSTEM/%s(%c%c)%c", opname
, dt
, dt
, dt
);
1663 jvm_generate_entier(gen_proc_t
* p
, oberon_expr_t
* x
, oberon_type_t
* res
)
1665 char prefix
= jvm_get_prefix(x
-> result
);
1666 char postfix
= jvm_get_postfix(res
);
1669 jvm_generate_cast_prefix(p
, prefix
, 'd');
1670 jvm_generate(p
, 2, 2, "invokestatic java/lang/Math/floor(D)D");
1671 jvm_generate_cast_prefix(p
, 'd', postfix
);
1675 push_operator(gen_proc_t
* p
, oberon_oper_t
* oper
)
1677 oberon_type_t
* preq
= oper
-> left
-> result
;
1678 int op
= oper
-> op
;
1682 push_expr(p
, oper
-> left
);
1683 jvm_generate_cast_type(p
, oper
-> left
-> result
, oper
-> result
);
1686 push_expr(p
, oper
-> left
);
1687 jvm_generate_hard_cast_type(p
, oper
-> left
-> result
, oper
-> result
);
1689 case OP_COMPLEMENTATION
:
1690 case OP_UNARY_MINUS
:
1694 push_expr(p
, oper
-> left
);
1695 jvm_generate_operator(p
, preq
, op
);
1698 jvm_generate_entier(p
, oper
-> left
, oper
-> result
);
1708 case OP_INTERSECTION
:
1710 case OP_SYM_DIFFERENCE
:
1718 push_expr(p
, oper
-> left
);
1719 push_expr(p
, oper
-> right
);
1720 jvm_generate_operator(p
, preq
, op
);
1724 jvm_generate_logical_or(p
, oper
-> left
, oper
-> right
);
1727 jvm_generate_logical_and(p
, oper
-> left
, oper
-> right
);
1731 preq
= oper
-> right
-> result
;
1732 char * cname
= jvm_get_class_full_name(preq
);
1733 push_expr(p
, oper
-> left
);
1734 jvm_generate(p
, 1, 1, "instanceof %s", cname
);
1737 jvm_generate_range(p
, oper
-> left
, oper
-> right
);
1740 jvm_generate_in(p
, oper
-> left
, oper
-> right
);
1746 jvm_generate_shift(p
, op
, oper
-> left
, oper
-> right
);
1749 gen_error("push_oper: unk op %i", op
);
1755 push_expr(gen_proc_t
* p
, oberon_expr_t
* expr
)
1759 push_item(p
, (oberon_item_t
*) expr
);
1763 push_operator(p
, (oberon_oper_t
*) expr
);
1768 store_expr(gen_proc_t
* p
, oberon_expr_t
* dst
, oberon_expr_t
* src
)
1770 assert(dst
-> is_item
);
1771 oberon_item_t
* item
= (oberon_item_t
*) dst
;
1773 if(dst
-> result
-> class == OBERON_TYPE_ARRAY
1774 || src
-> result
-> class == OBERON_TYPE_ARRAY
)
1778 jvm_generate_copy_array(p
, dst
-> result
);
1780 else if(dst
-> result
-> class == OBERON_TYPE_RECORD
1781 || src
-> result
-> class == OBERON_TYPE_RECORD
)
1785 jvm_generate_copy_record(p
, dst
-> result
);
1787 else switch(item
-> mode
)
1790 jvm_generate_ldst_prepare(p
, item
-> var
-> gen_var
);
1792 jvm_generate_store(p
, item
-> var
-> gen_var
);
1796 char postfix
= jvm_get_postfix(src
-> result
);
1797 int cell_size
= jvm_cell_size_for_postfix(postfix
);
1798 assert(item
-> parent
-> is_item
);
1799 push_item(p
, (oberon_item_t
*) item
-> parent
);
1800 push_expr(p
, item
-> args
);
1802 jvm_generate(p
, 1 + 1 + cell_size
, 0, "%castore", postfix
);
1805 assert(item
-> parent
-> is_item
);
1806 push_item(p
, (oberon_item_t
*) item
-> parent
);
1807 jvm_generate_ldst_prepare(p
, item
-> var
-> gen_var
);
1809 jvm_generate_store(p
, item
-> var
-> gen_var
);
1812 gen_error("store_expr: unk mode %i", item
-> mode
);
1818 oberon_generate_assign(oberon_context_t
* ctx
, oberon_expr_t
* src
, oberon_expr_t
* dst
)
1823 m
= ctx
-> mod
-> gen_mod
;
1824 p
= m
-> class -> p
;
1826 store_expr(p
, dst
, src
);
1830 oberon_generate_copy(oberon_context_t
* ctx
, oberon_expr_t
* src
, oberon_expr_t
* dst
)
1836 m
= ctx
-> mod
-> gen_mod
;
1837 p
= m
-> class -> p
;
1842 desc
= jvm_get_descriptor(dst
-> result
);
1844 jvm_generate(p
, 2, 0, "invokestatic SYSTEM/COPY(%s%s)V", desc
, desc
);
1848 oberon_generate_assert(oberon_context_t
* ctx
, oberon_expr_t
* cond
)
1853 m
= ctx
-> mod
-> gen_mod
;
1854 p
= m
-> class -> p
;
1857 jvm_generate(p
, 1, 0, "invokestatic SYSTEM/ASSERT(Z)V");
1861 oberon_generate_assert_n(oberon_context_t
* ctx
, oberon_expr_t
* cond
, int64_t n
)
1866 m
= ctx
-> mod
-> gen_mod
;
1867 p
= m
-> class -> p
;
1870 jvm_generate_push_int_size(p
, n
, 8);
1871 jvm_generate(p
, 1 + 2, 0, "invokestatic SYSTEM/ASSERT(ZJ)V");
1875 oberon_generate_trap(oberon_context_t
* ctx
, int64_t n
)
1880 m
= ctx
-> mod
-> gen_mod
;
1881 p
= m
-> class -> p
;
1883 jvm_generate_push_int_size(p
, n
, 8);
1884 jvm_generate(p
, 2, 0, "invokestatic SYSTEM/TRAP(J)V");
1888 oberon_generate_halt(oberon_context_t
* ctx
, int64_t n
)
1893 m
= ctx
-> mod
-> gen_mod
;
1894 p
= m
-> class -> p
;
1896 jvm_generate_push_int_size(p
, n
, 8);
1897 jvm_generate(p
, 2, 0, "invokestatic SYSTEM/HALT(J)V");
1901 oberon_set_out_directory(oberon_context_t
* ctx
, const char * path
)
1905 c
= ctx
-> gen_context
;
1907 c
-> dir
= new_string(path
);