11 #include "../../../include/oberon.h"
12 #include "../../oberon-internals.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
;
637 case OBERON_CLASS_VAR_PARAM
:
638 p
= var
-> parent
-> gen_proc
;
639 var
-> gen_var
= jvm_create_function_var(p
, JVM_STORAGE_FRAME_PARAM_VARPTR
, name
, t
);
641 case OBERON_CLASS_PARAM
:
642 p
= var
-> parent
-> gen_proc
;
643 var
-> gen_var
= jvm_create_function_var(p
, JVM_STORAGE_FRAME_PARAM_VAR
, name
, t
);
645 case OBERON_CLASS_FIELD
:
646 c
= var
-> parent_type
-> gen_type
-> class;
647 var
-> gen_var
= jvm_create_class_var(c
, JVM_STORAGE_FIELD_VAR
, name
, t
);
649 case OBERON_CLASS_VAR
:
652 p
= var
-> parent
-> gen_proc
;
653 var
-> gen_var
= jvm_create_function_var(p
, JVM_STORAGE_FRAME_VAR
, name
, t
);
657 var
-> gen_var
= jvm_create_class_var(class, JVM_STORAGE_STATIC_VAR
, name
, t
);
658 jvm_generate_var(var
-> gen_var
);
662 gen_error("oberon_generator_init_var: unk var class %i", var
-> class);
668 oberon_generator_init_temp_var(oberon_context_t
* ctx
, oberon_object_t
* var
)
670 assert(var
-> class == OBERON_CLASS_VAR
);
673 m
= ctx
-> mod
-> gen_mod
;
679 t
= var
-> type
-> gen_type
;
681 var
-> gen_var
= jvm_create_function_temp_var(p
, t
);
682 jvm_generate_var(var
-> gen_var
);
683 jvm_generate_var_initialization(p
, var
-> gen_var
);
687 oberon_generator_init_proc(oberon_context_t
* ctx
, oberon_object_t
* proc
)
689 struct gen_class
* class = proc
-> module
-> gen_mod
-> class;
690 proc
-> gen_proc
= jvm_create_proc(class);
691 proc
-> gen_proc
-> full_name
= jvm_get_field_full_name_safe(proc
);
692 jvm_create_static_links(proc
);
696 oberon_generator_init_module(oberon_context_t
* ctx
, oberon_module_t
* mod
)
698 gen_module_t
* m
= GC_MALLOC(sizeof *m
);
699 memset(m
, 0, sizeof *m
);
703 c
= ctx
-> gen_context
;
705 struct gen_class
* class;
706 class = jvm_create_class(c
-> dir
, mod
-> name
);
708 fprintf(class -> fp
, ".source %s\n", mod
-> name
);
709 fprintf(class -> fp
, ".class %s\n", mod
-> name
);
710 fprintf(class -> fp
, ".super java/lang/Object\n\n");
712 fprintf(class -> fp
, ".field private static $INITIALIZED$ Z\n\n");
720 oberon_generator_fini_module(oberon_module_t
* mod
)
722 jvm_destroy_class(mod
-> gen_mod
-> class);
726 push_expr(gen_proc_t
* p
, oberon_expr_t
* expr
);
729 oberon_generate_begin_module(oberon_context_t
* ctx
)
733 struct gen_class
* class;
735 class = ctx
-> mod
-> gen_mod
-> class;
737 p
= jvm_create_proc(class);
738 jvm_generate_function_header(p
, "public static", "BEGIN", "()V");
740 label_cont
= jvm_new_label_id(p
);
741 jvm_generate(p
, 0, 1, "getstatic %s/$INITIALIZED$ Z", class -> full_name
);
742 jvm_generate(p
, 1, 0, "ifeq L%i", label_cont
);
743 jvm_generate(p
, 0, 0, "return");
744 jvm_generate_label(p
, label_cont
);
746 jvm_generate(p
, 0, 1, "iconst_1");
747 jvm_generate(p
, 1, 0, "putstatic %s/$INITIALIZED$ Z", class -> full_name
);
749 /* Инициализация переменных объявленных в модуле */
750 oberon_object_t
* x
= ctx
-> mod
-> decl
-> list
-> next
;
753 if(x
-> class == OBERON_CLASS_MODULE
)
755 if(!x
-> module
-> intrinsic
)
757 jvm_generate(p
, 0, 0, "invokestatic %s/BEGIN()V", x
-> module
-> gen_mod
-> class -> full_name
);
760 else if(x
-> class == OBERON_CLASS_VAR
)
762 jvm_generate_var_initialization(p
, x
-> gen_var
);
763 if(x
-> type
-> class == OBERON_TYPE_ARRAY
764 || x
-> type
-> class == OBERON_TYPE_RECORD
)
766 jvm_generate_ldst_prepare(p
, x
-> gen_var
);
767 jvm_generate_new(p
, x
-> type
, 0);
768 jvm_generate_store(p
, x
-> gen_var
);
777 oberon_generate_end_module(oberon_context_t
* ctx
)
779 struct gen_class
* class = ctx
-> mod
-> gen_mod
-> class;
780 gen_proc_t
* p
= class -> p
;
782 jvm_generate(p
, 0, 0, "return");
783 jvm_generate_function_end(class -> p
);
785 p
= jvm_create_proc(class);
786 jvm_generate_function_header(p
, "private", "<init>", "()V");
787 jvm_alloc_register_untyped(p
-> rf
, false);
788 jvm_generate(p
, 0, 1, "aload_0");
789 jvm_generate(p
, 1, 0, "invokespecial java/lang/Object/<init>()V");
790 jvm_generate(p
, 0, 0, "return");
791 jvm_generate_function_end(class -> p
);
795 * Генерирует код для получения размера измерения массива
796 * Аналог Обероновского LEN(v, n); где n = 0 - первое измерение.
801 jvm_generate_array_len(gen_proc_t
* p
, int dim
)
805 jvm_generate(p
, 0, 1, "iconst_0");
806 jvm_generate(p
, 2, 1, "aaload");
809 jvm_generate(p
, 1, 1, "arraylength");
813 jvm_generate_array_duplicate_and_replace(gen_proc_t
* p
, gen_var_t
* v
, oberon_type_t
* arr
)
815 jvm_generate_ldst_prepare(p
, v
);
818 oberon_type_t
* base
= arr
;
819 while(base
-> class == OBERON_TYPE_ARRAY
)
821 if(base
-> size
== 0)
823 jvm_generate_load(p
, v
);
824 jvm_generate_array_len(p
, dim
);
830 jvm_generate_new(p
, arr
, dim
);
831 jvm_generate(p
, 1, 2, "dup");
832 jvm_generate_load(p
, v
);
833 jvm_generate_copy_array(p
, arr
);
834 jvm_generate_store(p
, v
);
838 jvm_generate_record_duplicate_and_replace(gen_proc_t
* p
, gen_var_t
* v
, oberon_type_t
* rec
)
840 jvm_generate_ldst_prepare(p
, v
);
841 jvm_generate_new(p
, rec
, 0);
842 jvm_generate(p
, 1, 2, "dup");
843 jvm_generate_load(p
, v
);
844 jvm_generate_copy_record(p
, rec
);
845 jvm_generate_store(p
, v
);
849 jvm_generate_local_object(gen_proc_t
* p
, oberon_object_t
* x
)
852 struct gen_class
* class;
857 // Убеждаемся что сейчас находимся в функции
863 case OBERON_CLASS_VAR_PARAM
:
864 case OBERON_CLASS_PARAM
:
865 case OBERON_CLASS_VAR
:
868 case OBERON_CLASS_PROC
:
871 gen_error("jvm_generate_local_initialization: wat");
877 jvm_generate_local_initialization(gen_proc_t
* p
, oberon_object_t
* x
)
880 struct gen_class
* class;
885 // Убеждаемся что сейчас находимся в функции
891 case OBERON_CLASS_VAR_PARAM
:
892 case OBERON_CLASS_PARAM
:
893 case OBERON_CLASS_VAR
:
894 jvm_generate_var_initialization(p
, v
);
896 case OBERON_CLASS_PROC
:
899 gen_error("jvm_generate_local_initialization: wat");
903 if(x
-> class == OBERON_CLASS_PARAM
)
905 if(x
-> type
-> class == OBERON_TYPE_ARRAY
)
907 jvm_generate_array_duplicate_and_replace(p
, v
, x
-> type
);
909 else if(x
-> type
-> class == OBERON_TYPE_RECORD
)
911 jvm_generate_record_duplicate_and_replace(p
, v
, x
-> type
);
917 oberon_generate_begin_proc(oberon_context_t
* ctx
, oberon_object_t
* proc
)
922 oberon_object_t
* var
;
924 p
= proc
-> gen_proc
;
928 signature
= jvm_get_local_procedure_signature(proc
);
932 oberon_generate_procedure_pointer_class(p
-> class -> dir
, proc
);
933 signature
= jvm_get_procedure_signature(proc
-> type
);
936 name
= jvm_get_name(proc
);
937 jvm_generate_function_header(p
, "public static", name
, signature
);
941 jvm_generate_staticlinks(proc
);
944 jvm_generate_procedure_frame(proc
);
946 /* Создание параметров и переменных */
947 var
= proc
-> scope
-> list
-> next
;
950 jvm_generate_local_object(p
, var
);
954 jvm_generate_frame_initialization(p
);
956 /* Инициализация парамеров и переменных */
957 var
= proc
-> scope
-> list
-> next
;
960 jvm_generate_local_initialization(p
, var
);
966 oberon_generate_end_proc(oberon_context_t
* ctx
)
971 m
= ctx
-> mod
-> gen_mod
;
974 jvm_generate_function_end(p
);
978 oberon_generator_reserve_label(oberon_context_t
* ctx
)
984 m
= ctx
-> mod
-> gen_mod
;
987 l
= GC_MALLOC(sizeof *l
);
988 memset(l
, 0, sizeof *l
);
990 l
-> id
= jvm_new_label_id(p
);
995 oberon_generate_label(oberon_context_t
* ctx
, gen_label_t
* l
)
1000 m
= ctx
-> mod
-> gen_mod
;
1001 p
= m
-> class -> p
;
1003 jvm_generate_label(p
, l
-> id
);
1007 oberon_generate_goto(oberon_context_t
* ctx
, gen_label_t
* l
)
1012 m
= ctx
-> mod
-> gen_mod
;
1013 p
= m
-> class -> p
;
1015 jvm_generate(p
, 0, 0, "goto L%i", l
-> id
);
1019 oberon_generate_branch(oberon_context_t
* ctx
, oberon_expr_t
* cond
, bool gotoif
, gen_label_t
* l
)
1024 m
= ctx
-> mod
-> gen_mod
;
1025 p
= m
-> class -> p
;
1031 /* переход если false */
1032 jvm_generate(p
, 1, 0, "ifeq L%i", l
-> id
);
1036 /* переход если true */
1037 jvm_generate(p
, 1, 0, "ifne L%i", l
-> id
);
1042 push_varptr(gen_proc_t
* p
, oberon_expr_t
* expr
)
1044 assert(expr
-> is_item
);
1046 switch(expr
-> item
.mode
)
1049 jvm_generate_ldst_prepare(p
, expr
-> item
.var
-> gen_var
);
1052 push_item(p
, expr
-> item
.parent
);
1053 push_expr(p
, expr
-> item
.args
);
1056 push_item(p
, expr
-> item
.parent
);
1057 jvm_generate_ldst_prepare(p
, expr
-> item
.var
-> gen_var
);
1060 push_varptr(p
, (oberon_expr_t
*) expr
-> item
.parent
);
1063 gen_error("push_varptr: wat %i", expr
-> item
.mode
);
1069 jvm_generate_call_proc(gen_proc_t
* p
, oberon_item_t
* desig
)
1071 assert(desig
-> var
== NULL
);
1072 assert(desig
-> mode
== MODE_CALL
);
1074 bool direct_call
= false;
1075 if(desig
-> parent
-> mode
== MODE_VAR
)
1077 if(desig
-> parent
-> var
-> class == OBERON_CLASS_PROC
)
1083 oberon_type_t
* procsig
;
1084 procsig
= desig
-> parent
-> result
;
1086 if(direct_call
== false)
1088 /* Загружаем указатель на процедуру */
1089 push_item(p
, desig
-> parent
);
1094 jvm_generate_push_static_links(p
, desig
-> parent
-> var
);
1098 int result_cells
= jvm_cell_size_for_type(procsig
-> base
);
1100 int num
= desig
-> num_args
;
1101 oberon_expr_t
* arg
= desig
-> args
;
1102 oberon_object_t
* param
= procsig
-> decl
;
1103 for(int i
= 0; i
< num
; i
++)
1105 if(param
-> class == OBERON_CLASS_VAR_PARAM
)
1108 push_varptr(p
, arg
);
1112 args_cells
+= jvm_cell_size_for_type(arg
-> result
);
1116 param
= param
-> next
;
1121 char * full_name
= jvm_get_field_full_name(desig
-> parent
-> var
);
1122 char * signature
= jvm_get_local_procedure_signature(desig
-> parent
-> var
);
1123 jvm_generate(p
, args_cells
, result_cells
, "invokestatic %s%s", full_name
, signature
);
1127 char * cname
= jvm_get_class_full_name(procsig
);
1128 char * signature
= jvm_get_procedure_signature(procsig
);
1129 jvm_generate(p
, 1 + args_cells
, result_cells
, "invokevirtual %s/invoke%s", cname
, signature
);
1134 oberon_generate_call_proc(oberon_context_t
* ctx
, oberon_expr_t
* desig
)
1136 assert(desig
-> is_item
);
1137 jvm_generate_call_proc(ctx
-> mod
-> gen_mod
-> class -> p
, (oberon_item_t
*) desig
);
1141 oberon_generate_return(oberon_context_t
* ctx
, oberon_expr_t
* expr
)
1148 m
= ctx
-> mod
-> gen_mod
;
1149 p
= m
-> class -> p
;
1154 prefix
= jvm_get_prefix(expr
-> result
);
1155 cell_size
= jvm_cell_size_for_type(expr
-> result
);
1156 jvm_generate(p
, cell_size
, 0, "%creturn", prefix
);
1160 jvm_generate(p
, 0, 0, "return");
1165 jvm_generate_expr_new_pointer(gen_proc_t
* p
, oberon_type_t
* type
, int num
, oberon_expr_t
* arg
)
1167 assert(type
-> class == OBERON_TYPE_POINTER
);
1169 for(int i
= 0; i
< num
; i
++)
1175 jvm_generate_new(p
, type
-> base
, num
);
1179 jvm_generate_cast_prefix(gen_proc_t
* p
, char prefix
, char postfix
)
1181 if(prefix
== postfix
)
1186 int from_cell_size
= jvm_cell_size_for_postfix(prefix
);
1187 int to_cell_size
= jvm_cell_size_for_postfix(postfix
);
1188 jvm_generate(p
, from_cell_size
, to_cell_size
, "%c2%c", prefix
, postfix
);
1192 jvm_generate_cast_type(gen_proc_t
* p
, oberon_type_t
* from
, oberon_type_t
* to
)
1194 if(to
-> class == OBERON_TYPE_RECORD
|| to
-> class == OBERON_TYPE_POINTER
)
1196 if(to
-> class == OBERON_TYPE_POINTER
&& to
-> base
-> class == OBERON_TYPE_RECORD
)
1198 char * full_name
= jvm_get_class_full_name(to
);
1199 jvm_generate(p
, 1, 1, "checkcast %s", full_name
);
1204 char prefix
= jvm_get_prefix(from
);
1205 char postfix
= jvm_get_postfix(to
);
1206 jvm_generate_cast_prefix(p
, prefix
, postfix
);
1211 jvm_generate_hard_cast_type(gen_proc_t
* p
, oberon_type_t
* from
, oberon_type_t
* to
)
1213 if(from
-> class == OBERON_TYPE_REAL
1214 && (to
-> class == OBERON_TYPE_INTEGER
|| to
-> class == OBERON_TYPE_SYSTEM_BYTE
))
1216 char postfix
= jvm_get_postfix(to
);
1217 if(from
-> size
<= 4)
1219 jvm_generate(p
, 1, 1, "invokestatic java/lang/Float/floatToIntBits(F)I");
1220 jvm_generate_cast_prefix(p
, 'i', postfix
);
1224 jvm_generate(p
, 2, 2, "invokestatic java/lang/Double/doubleToIntBits(D)J");
1225 jvm_generate_cast_prefix(p
, 'l', postfix
);
1228 else if((from
-> class == OBERON_TYPE_INTEGER
|| from
-> class == OBERON_TYPE_SYSTEM_BYTE
)
1229 && to
-> class == OBERON_TYPE_REAL
)
1231 char prefix
= jvm_get_prefix(from
);
1234 jvm_generate_cast_prefix(p
, prefix
, 'i');
1235 jvm_generate(p
, 1, 1, "invokestatic java/lang/Float/intBitsToFloat(I)F");
1239 jvm_generate_cast_prefix(p
, prefix
, 'l');
1240 jvm_generate(p
, 2, 2, "invokestatic java/lang/Double/longBitsToDouble(J)D");
1245 jvm_generate_cast_type(p
, from
, to
);
1250 push_item(gen_proc_t
* p
, oberon_item_t
* item
)
1252 switch(item
-> mode
)
1255 if(item
-> var
-> class == OBERON_CLASS_PROC
)
1257 jvm_generate_push_procedure_pointer(p
, item
-> var
);
1261 jvm_generate_load(p
, item
-> var
-> gen_var
);
1268 jvm_generate_push_int_size(p
, item
-> integer
, item
-> result
-> size
);
1271 jvm_generate_call_proc(p
, item
);
1275 char postfix
= jvm_get_postfix(item
-> result
);
1276 int cell_size
= jvm_cell_size_for_postfix(postfix
);
1277 push_item(p
, item
-> parent
);
1278 push_expr(p
, item
-> args
);
1279 jvm_generate(p
, 1 + 1, cell_size
, "%caload", postfix
);
1282 push_item(p
, item
-> parent
);
1283 jvm_generate_load(p
, item
-> var
-> gen_var
);
1286 /* Все объекты в jvm представляются как указатели */
1287 push_item(p
, item
-> parent
);
1290 jvm_generate(p
, 0, 1, "aconst_null");
1293 jvm_generate_expr_new_pointer(p
, item
-> result
, item
-> num_args
, item
-> args
);
1296 jvm_generate_push_float(p
, item
-> real
, item
-> result
-> size
);
1299 jvm_generate_push_string(p
, item
-> string
, item
-> result
-> size
);
1302 push_item(p
, item
-> parent
);
1303 jvm_generate_array_len(p
, item
-> integer
);
1304 jvm_generate_cast_prefix(p
, 'i', jvm_get_postfix(item
-> result
));
1307 gen_error("push_item: unk mode %i", item
-> mode
);
1313 jvm_generate_logical_not(gen_proc_t
* p
)
1315 int label_done
= jvm_new_label_id(p
);
1316 int label_false
= jvm_new_label_id(p
);
1318 jvm_generate(p
, 1, 0, "ifne L%i", label_false
);
1319 jvm_generate(p
, 0, 1, "iconst_1");
1320 jvm_generate(p
, 0, 0, "goto L%i", label_done
);
1321 jvm_generate_label(p
, label_false
);
1322 jvm_generate(p
, 0, 1, "iconst_0");
1323 jvm_generate_label(p
, label_done
);
1327 jvm_generate_abs(gen_proc_t
* p
, char prefix
)
1329 char t
= jvm_get_type_of_prefix(prefix
);
1330 int cell_size
= jvm_cell_size_for_postfix(prefix
);
1331 jvm_generate(p
, cell_size
, cell_size
, "invokestatic java/lang/Math/abs(%c)%c", t
, t
);
1335 jvm_get_compare_postfix(int op
)
1359 gen_error("jvm_generate_compare_op: wat");
1366 jvm_generate_compare_op(gen_proc_t
* p
, oberon_type_t
* t
, int op
)
1368 char prefix
= jvm_get_prefix(t
);
1369 int label_true
= jvm_new_label_id(p
);
1370 int label_done
= jvm_new_label_id(p
);
1371 int cell_size
= jvm_cell_size_for_type(t
);
1372 char * cmpop
= jvm_get_compare_postfix(op
);
1376 jvm_generate(p
, 2 * cell_size
, 1, "lcmp");
1377 jvm_generate(p
, 1, 1, "if%s L%i", cmpop
, label_true
);
1379 else if(prefix
== 'f' || prefix
== 'd')
1382 if(op
== OP_EQ
|| op
== OP_NEQ
|| op
== OP_GRT
|| op
== OP_GEQ
)
1390 jvm_generate(p
, 2 * cell_size
, 1, "%ccmp%c", prefix
, fop
);
1391 jvm_generate(p
, 1, 1, "if%s L%i", cmpop
, label_true
);
1393 else if(prefix
== 'a')
1395 if(t
-> class == OBERON_TYPE_STRING
1396 || (t
-> class == OBERON_TYPE_POINTER
&& t
-> base
-> class == OBERON_TYPE_CHAR
))
1398 jvm_generate(p
, 2, 1, "invokestatic SYSTEM/STRCMP([B[B)I");
1399 jvm_generate(p
, 1, 0, "if%s L%i", cmpop
, label_true
);
1403 jvm_generate(p
, 1, 0, "if_acmp%s L%i", cmpop
, label_true
);
1408 jvm_generate(p
, 2 * cell_size
, 0, "if_%ccmp%s L%i", prefix
, cmpop
, label_true
);
1411 jvm_generate(p
, 0, 1, "iconst_0");
1412 jvm_generate(p
, 0, 0, "goto L%i", label_done
);
1413 jvm_generate_label(p
, label_true
);
1414 jvm_generate(p
, 0, 1, "iconst_1");
1415 jvm_generate_label(p
, label_done
);
1419 jvm_generate_operator(gen_proc_t
* p
, oberon_type_t
* t
, int op
)
1421 char prefix
= jvm_get_prefix(t
);
1422 int cell_size
= jvm_cell_size_for_type(t
);
1425 case OP_UNARY_MINUS
:
1426 jvm_generate(p
, cell_size
, cell_size
, "%cneg", prefix
);
1428 case OP_COMPLEMENTATION
:
1429 jvm_generate_push_int_size(p
, -1, t
-> size
);
1430 jvm_generate(p
, 2 * cell_size
, cell_size
, "%cxor", prefix
);
1433 jvm_generate_logical_not(p
);
1436 jvm_generate_abs(p
, prefix
);
1439 jvm_generate(p
, cell_size
, cell_size
, "invokestatic java/lang/Character/toUpperCase(I)I");
1443 jvm_generate(p
, 2 * cell_size
, cell_size
, "%cadd", prefix
);
1446 jvm_generate(p
, 2 * cell_size
, cell_size
, "%csub", prefix
);
1449 jvm_generate(p
, 2 * cell_size
, cell_size
, "%cmul", prefix
);
1452 jvm_generate(p
, 2 * cell_size
, cell_size
, "%cdiv", prefix
);
1455 jvm_generate(p
, 2 * cell_size
, cell_size
, "%crem", prefix
);
1458 jvm_generate(p
, 2 * cell_size
, cell_size
, "%cor", prefix
);
1460 case OP_INTERSECTION
:
1461 jvm_generate(p
, 2 * cell_size
, cell_size
, "%cand", prefix
);
1464 /* (a - b) == a & ~b */
1465 jvm_generate_push_int_size(p
, -1, t
-> size
);
1466 jvm_generate(p
, 2 * cell_size
, cell_size
, "%cxor", prefix
);
1467 jvm_generate(p
, 2 * cell_size
, cell_size
, "%cand", prefix
);
1469 case OP_SYM_DIFFERENCE
:
1470 jvm_generate(p
, 2 * cell_size
, cell_size
, "%cxor", prefix
);
1479 jvm_generate_compare_op(p
, t
, op
);
1482 gen_error("jvm_generate_operator: unk op %i", op
);
1488 jvm_generate_logical_or(gen_proc_t
* p
, oberon_expr_t
* a
, oberon_expr_t
* b
)
1490 int label_calc_b
= jvm_new_label_id(p
);
1491 int label_done
= jvm_new_label_id(p
);
1493 /* a OR b -- если a, то TRUE, иначе b */
1496 jvm_generate(p
, 1, 0, "ifeq L%i", label_calc_b
);
1497 jvm_generate(p
, 0, 1, "iconst_1");
1498 jvm_generate(p
, 0, 0, "goto L%i", label_done
);
1499 jvm_generate_label(p
, label_calc_b
);
1501 jvm_generate_label(p
, label_done
);
1505 jvm_generate_logical_and(gen_proc_t
* p
, oberon_expr_t
* a
, oberon_expr_t
* b
)
1507 int label_false
= jvm_new_label_id(p
);
1508 int label_done
= jvm_new_label_id(p
);
1510 /* a AND b -- если a, то b, иначе FALSE */
1513 jvm_generate(p
, 1, 0, "ifeq L%i", label_false
);
1515 jvm_generate(p
, 0, 0, "goto L%i", label_done
);
1516 jvm_generate_label(p
, label_false
);
1517 jvm_generate(p
, 0, 1, "iconst_0");
1518 jvm_generate_label(p
, label_done
);
1522 jvm_generate_range(gen_proc_t
* p
, oberon_expr_t
* a
, oberon_expr_t
* b
)
1524 /* { a } == 1 << a */
1525 /* { a..b } == (a <= b) ? ((2 << b) - (1 << a)) : (0); */
1529 oberon_type_t
* type
;
1536 cell_size
= jvm_cell_size_for_type(type
);
1537 prefix
= jvm_get_prefix(type
);
1541 jvm_generate_push_int_size(p
, 1, type
-> size
);
1543 jvm_generate(p
, 2 * cell_size
, cell_size
, "%cshl", prefix
);
1547 ra
= jvm_create_function_temp_var(p
, type
-> gen_type
);
1548 rb
= jvm_create_function_temp_var(p
, type
-> gen_type
);
1549 jvm_generate_var(ra
);
1550 jvm_generate_var(rb
);
1551 jvm_generate_var_initialization(p
, ra
);
1552 jvm_generate_var_initialization(p
, rb
);
1553 label_else
= jvm_new_label_id(p
);
1554 label_end
= jvm_new_label_id(p
);
1557 jvm_generate_store(p
, ra
);
1559 jvm_generate_store(p
, rb
);
1561 jvm_generate_load(p
, ra
);
1562 jvm_generate_load(p
, rb
);
1563 jvm_generate(p
, 2 * cell_size
, 0, "if_%ccmpgt L%i", prefix
, label_else
);
1565 jvm_generate_push_int_size(p
, 2, type
-> size
);
1566 jvm_generate_load(p
, rb
);
1567 jvm_generate(p
, 2 * cell_size
, cell_size
, "%cshl", prefix
);
1568 jvm_generate_push_int_size(p
, 2, type
-> size
);
1569 jvm_generate_load(p
, ra
);
1570 jvm_generate(p
, 2 * cell_size
, cell_size
, "%cshl", prefix
);
1571 jvm_generate(p
, 2 * cell_size
, cell_size
, "%csub", prefix
);
1572 jvm_generate(p
, 0, 0, "goto L%i", label_end
);
1574 jvm_generate_label(p
, label_else
);
1575 jvm_generate_push_int_size(p
, 0, type
-> size
);
1576 jvm_generate_label(p
, label_end
);
1579 /* TODO free registers */
1583 jvm_generate_in(gen_proc_t
* p
, oberon_expr_t
* a
, oberon_expr_t
* b
)
1585 oberon_type_t
* t
= a
-> result
;
1586 int cell_size
= jvm_cell_size_for_type(t
);
1587 char prefix
= jvm_get_prefix(t
);
1588 int label_else
= jvm_new_label_id(p
);
1589 int label_end
= jvm_new_label_id(p
);
1591 /* (a IN b) == (1 << a) & b */
1592 jvm_generate_push_int_size(p
, 1, t
-> size
);
1594 jvm_generate(p
, 2 * cell_size
, cell_size
, "%cshl", prefix
);
1596 jvm_generate(p
, 2 * cell_size
, cell_size
, "%cand", prefix
);
1600 jvm_generate(p
, cell_size
, 0, "lcmp");
1603 jvm_generate(p
, 1, 0, "ifeq L%i", label_else
);
1604 jvm_generate(p
, 0, 1, "iconst_1");
1605 jvm_generate(p
, 0, 0, "goto L%i", label_end
);
1606 jvm_generate_label(p
, label_else
);
1607 jvm_generate(p
, 0, 1, "iconst_0");
1608 jvm_generate_label(p
, label_end
);
1612 jvm_generate_shift(gen_proc_t
* p
, int op
, oberon_expr_t
* a
, oberon_expr_t
* b
)
1614 oberon_type_t
* t
= a
-> result
;
1615 int cell_size
= jvm_cell_size_for_type(t
);
1616 char prefix
= jvm_get_prefix(t
);
1617 char dt
= jvm_get_type_of_prefix(prefix
);
1620 jvm_generate_cast_type(p
, a
-> result
, t
);
1622 jvm_generate_cast_type(p
, b
-> result
, t
);
1637 gen_error("jvm_generate_shift: invalid op %i", op
);
1640 jvm_generate(p
, 2 * cell_size
, cell_size
, "invokestatic SYSTEM/%s(%c%c)%c", opname
, dt
, dt
, dt
);
1644 jvm_generate_entier(gen_proc_t
* p
, oberon_expr_t
* x
, oberon_type_t
* res
)
1646 char prefix
= jvm_get_prefix(x
-> result
);
1647 char postfix
= jvm_get_postfix(res
);
1650 jvm_generate_cast_prefix(p
, prefix
, 'd');
1651 jvm_generate(p
, 2, 2, "invokestatic java/lang/Math/floor(D)D");
1652 jvm_generate_cast_prefix(p
, 'd', postfix
);
1656 push_operator(gen_proc_t
* p
, oberon_oper_t
* oper
)
1658 oberon_type_t
* preq
= oper
-> left
-> result
;
1659 int op
= oper
-> op
;
1663 push_expr(p
, oper
-> left
);
1664 jvm_generate_cast_type(p
, oper
-> left
-> result
, oper
-> result
);
1667 push_expr(p
, oper
-> left
);
1668 jvm_generate_hard_cast_type(p
, oper
-> left
-> result
, oper
-> result
);
1670 case OP_COMPLEMENTATION
:
1671 case OP_UNARY_MINUS
:
1675 push_expr(p
, oper
-> left
);
1676 jvm_generate_operator(p
, preq
, op
);
1679 jvm_generate_entier(p
, oper
-> left
, oper
-> result
);
1689 case OP_INTERSECTION
:
1691 case OP_SYM_DIFFERENCE
:
1699 push_expr(p
, oper
-> left
);
1700 push_expr(p
, oper
-> right
);
1701 jvm_generate_operator(p
, preq
, op
);
1705 jvm_generate_logical_or(p
, oper
-> left
, oper
-> right
);
1708 jvm_generate_logical_and(p
, oper
-> left
, oper
-> right
);
1712 preq
= oper
-> right
-> result
;
1713 char * cname
= jvm_get_class_full_name(preq
);
1714 push_expr(p
, oper
-> left
);
1715 jvm_generate(p
, 1, 1, "instanceof %s", cname
);
1718 jvm_generate_range(p
, oper
-> left
, oper
-> right
);
1721 jvm_generate_in(p
, oper
-> left
, oper
-> right
);
1727 jvm_generate_shift(p
, op
, oper
-> left
, oper
-> right
);
1730 gen_error("push_oper: unk op %i", op
);
1736 push_expr(gen_proc_t
* p
, oberon_expr_t
* expr
)
1740 push_item(p
, (oberon_item_t
*) expr
);
1744 push_operator(p
, (oberon_oper_t
*) expr
);
1749 store_expr(gen_proc_t
* p
, oberon_expr_t
* dst
, oberon_expr_t
* src
)
1751 assert(dst
-> is_item
);
1752 oberon_item_t
* item
= (oberon_item_t
*) dst
;
1754 if(dst
-> result
-> class == OBERON_TYPE_ARRAY
1755 || src
-> result
-> class == OBERON_TYPE_ARRAY
)
1759 jvm_generate_copy_array(p
, dst
-> result
);
1761 else if(dst
-> result
-> class == OBERON_TYPE_RECORD
1762 || src
-> result
-> class == OBERON_TYPE_RECORD
)
1766 jvm_generate_copy_record(p
, dst
-> result
);
1768 else switch(item
-> mode
)
1771 jvm_generate_ldst_prepare(p
, item
-> var
-> gen_var
);
1773 jvm_generate_store(p
, item
-> var
-> gen_var
);
1777 char postfix
= jvm_get_postfix(src
-> result
);
1778 int cell_size
= jvm_cell_size_for_postfix(postfix
);
1779 assert(item
-> parent
-> is_item
);
1780 push_item(p
, (oberon_item_t
*) item
-> parent
);
1781 push_expr(p
, item
-> args
);
1783 jvm_generate(p
, 1 + 1 + cell_size
, 0, "%castore", postfix
);
1786 assert(item
-> parent
-> is_item
);
1787 push_item(p
, (oberon_item_t
*) item
-> parent
);
1788 jvm_generate_ldst_prepare(p
, item
-> var
-> gen_var
);
1790 jvm_generate_store(p
, item
-> var
-> gen_var
);
1793 gen_error("store_expr: unk mode %i", item
-> mode
);
1799 oberon_generate_assign(oberon_context_t
* ctx
, oberon_expr_t
* src
, oberon_expr_t
* dst
)
1804 m
= ctx
-> mod
-> gen_mod
;
1805 p
= m
-> class -> p
;
1807 store_expr(p
, dst
, src
);
1811 oberon_generate_copy(oberon_context_t
* ctx
, oberon_expr_t
* src
, oberon_expr_t
* dst
)
1817 m
= ctx
-> mod
-> gen_mod
;
1818 p
= m
-> class -> p
;
1823 desc
= jvm_get_descriptor(dst
-> result
);
1825 jvm_generate(p
, 2, 0, "invokestatic SYSTEM/COPY(%s%s)V", desc
, desc
);
1829 oberon_generate_assert(oberon_context_t
* ctx
, oberon_expr_t
* cond
)
1834 m
= ctx
-> mod
-> gen_mod
;
1835 p
= m
-> class -> p
;
1838 jvm_generate(p
, 1, 0, "invokestatic SYSTEM/ASSERT(Z)V");
1842 oberon_generate_assert_n(oberon_context_t
* ctx
, oberon_expr_t
* cond
, int64_t n
)
1847 m
= ctx
-> mod
-> gen_mod
;
1848 p
= m
-> class -> p
;
1851 jvm_generate_push_int_size(p
, n
, 8);
1852 jvm_generate(p
, 1 + 2, 0, "invokestatic SYSTEM/ASSERT(ZJ)V");
1856 oberon_generate_trap(oberon_context_t
* ctx
, int64_t n
)
1861 m
= ctx
-> mod
-> gen_mod
;
1862 p
= m
-> class -> p
;
1864 jvm_generate_push_int_size(p
, n
, 8);
1865 jvm_generate(p
, 2, 0, "invokestatic SYSTEM/TRAP(J)V");
1869 oberon_generate_halt(oberon_context_t
* ctx
, int64_t n
)
1874 m
= ctx
-> mod
-> gen_mod
;
1875 p
= m
-> class -> p
;
1877 jvm_generate_push_int_size(p
, n
, 8);
1878 jvm_generate(p
, 2, 0, "invokestatic SYSTEM/HALT(J)V");
1882 oberon_set_out_directory(oberon_context_t
* ctx
, const char * path
)
1886 c
= ctx
-> gen_context
;
1888 c
-> dir
= new_string(path
);