cbc834e58d5cf919926aae41423023dc4e259013
11 #include "../../../include/oberon.h"
12 #include "../../oberon-internals.h"
13 #include "generator-jvm.h"
14 #include "generator-jvm-basic.h"
16 // ==========================================
17 // ==========================================
18 // ==========================================
21 jvm_create_proc(struct gen_class
* class)
23 gen_proc_t
* p
= GC_MALLOC(sizeof *p
);
24 memset(p
, 0, sizeof *p
);
26 struct gen_register_file
* rf
= GC_MALLOC(sizeof *rf
);
27 memset(rf
, 0, sizeof *rf
);
29 struct gen_stack
* stack
= GC_MALLOC(sizeof *stack
);
30 memset(rf
, 0, sizeof *stack
);
41 jvm_generate_function_header(gen_proc_t
* p
, char * access
, char * name
, char * signature
)
43 struct gen_class
* class;
46 /* Делаем процедуру текущей в этом классе */
47 assert(class -> p
== NULL
);
50 fprintf(class -> fp
, ".method %s %s%s\n", access
, name
, signature
);
54 jvm_generate_function_end(gen_proc_t
* p
)
56 struct gen_class
* class;
62 int pointer
= p
-> stack
-> pointer
;
63 int max_pointer
= p
-> stack
-> max_pointer
;
64 int locals
= p
-> rf
-> num_used
;
65 int max_locals
= p
-> rf
-> max_used
;
67 fprintf(class -> fp
, " .limit stack %i \t; current(%i)\n", max_pointer
, pointer
);
68 fprintf(class -> fp
, " .limit locals %i \t; current(%i)\n", max_locals
, locals
);
69 fprintf(class -> fp
, ".end method\n\n");
73 jvm_create_class(char * full_name
)
75 struct gen_class
* class = GC_MALLOC(sizeof *class);
76 memset(class, 0, sizeof *class);
78 char * fname
= new_string("%s.j", full_name
);
79 class -> full_name
= new_string(full_name
);
80 class -> fp
= fopen(fname
, "w");
87 jvm_destroy_class(struct gen_class
* class)
89 assert(class -> p
== NULL
);
94 jvm_stack_push(gen_proc_t
* p
, unsigned size
)
96 p
-> stack
-> pointer
+= size
;
97 if(p
-> stack
-> pointer
> p
-> stack
-> max_pointer
)
99 p
-> stack
-> max_pointer
= p
-> stack
-> pointer
;
104 jvm_stack_pop(gen_proc_t
* p
, unsigned size
)
106 p
-> stack
-> pointer
-= size
;
107 assert(p
-> stack
-> pointer
>= 0);
111 jvm_generate(gen_proc_t
* p
, unsigned get
, unsigned push
, char * format
, ...)
114 va_start(ptr
, format
);
116 jvm_stack_pop(p
, get
);
117 fprintf(p
-> class -> fp
, " ");
118 vfprintf(p
-> class -> fp
, format
, ptr
);
119 jvm_stack_push(p
, push
);
120 fprintf(p
-> class -> fp
, " \t ;>>>> %i -- %i : current_stack(%i)\n", get
, push
, p
-> stack
-> pointer
);
126 jvm_generate_push_int(gen_proc_t
* p
, int64_t i
)
130 jvm_generate(p
, 0, 1, "iconst_m1");
132 else if(i
>= 0 && i
<= 5)
134 jvm_generate(p
, 0, 1, "iconst_%li", i
);
136 else if(i
>= -128 && i
<= 127)
138 jvm_generate(p
, 0, 1, "bipush %li", i
);
140 else if(i
>= -32768 && i
<= 32767)
142 jvm_generate(p
, 0, 1, "sipush %li", i
);
144 else if(i
>= -2147483648 && i
<= 2147483647)
146 jvm_generate(p
, 0, 1, "ldc %li", i
);
150 jvm_generate(p
, 0, 2, "ldc2 %li", i
);
155 jvm_generate_push_float(gen_proc_t
* p
, double f
, int size
)
161 jvm_generate(p
, 0, 1, "fconst_0");
165 jvm_generate(p
, 0, 1, "fconst_1");
169 jvm_generate(p
, 0, 1, "fconst_2");
173 jvm_generate(p
, 0, 1, "ldc %lf", f
);
180 jvm_generate(p
, 0, 2, "dconst_0");
184 jvm_generate(p
, 0, 2, "dconst_1");
188 jvm_generate(p
, 0, 2, "ldc2 %lf", f
);
194 oberon_generator_new_var()
196 gen_var_t
* v
= GC_MALLOC(sizeof *v
);
197 memset(v
, 0, sizeof *v
);
202 jvm_generate_and_init_global_var(gen_var_t
* v
, struct gen_class
* class, char * access
, char * name
, char * desc
)
204 assert(class -> p
== NULL
);
205 fprintf(class -> fp
, ".field %s static %s %s\n\n", access
, name
, desc
);
207 v
-> storage
= JVM_STORAGE_STATIC
;
208 v
-> full_name
= new_string("%s/%s", class -> full_name
, name
);
209 v
-> desc
= new_string(desc
);
213 jvm_generate_and_init_field(gen_var_t
* v
, struct gen_class
* class, char * access
, char * name
, char * desc
)
215 assert(class -> p
== NULL
);
216 fprintf(class -> fp
, ".field %s %s %s\n\n", access
, name
, desc
);
218 v
-> storage
= JVM_STORAGE_FIELD
;
219 v
-> full_name
= new_string("%s/%s", class -> full_name
, name
);
220 v
-> desc
= new_string(desc
);
224 jvm_generate_and_init_local_var(gen_var_t
* v
, gen_proc_t
* p
, bool wide
)
226 v
-> storage
= JVM_STORAGE_REGISTER
;
227 v
-> reg
= jvm_alloc_register_untyped(p
-> rf
, wide
);
231 jvm_generate_and_init_named_local_var(gen_var_t
* v
, gen_proc_t
* p
, bool wide
, char * name
, char * desc
)
233 jvm_generate_and_init_local_var(v
, p
, wide
);
234 v
-> desc
= new_string(desc
);
235 jvm_generate(p
, 0, 0, ".var %i is %s %s from start to end", v
-> reg
, name
, desc
);
239 jvm_new_label_id(gen_proc_t
* p
)
241 int label_id
= p
-> label_id
;
247 jvm_get_label_name(int label_id
)
249 return new_string("L%i", label_id
);
253 jvm_generate_label(gen_proc_t
* p
, int label_id
)
255 jvm_generate(p
, 0, 0, "L%i:", label_id
);
259 jvm_generate_new(gen_proc_t
* p
, oberon_type_t
* type
, int num
);
262 * Функция jvm_generate_static_array_initialization генерирует код для
263 * статической инициализации массива. На входе массив, на выходе тот же массив.
264 * arrayref -- arrayref
268 jvm_generate_static_array_initialization(gen_proc_t
* p
, oberon_type_t
* type
)
270 /* for(int i = 0; i < a.length; i++) */
271 /* a[i] := new(base); */
274 /* a := pop(array) */
275 gen_var_t
* va
= oberon_generator_new_var();
276 jvm_generate_and_init_local_var(va
, p
, false);
277 int reg_a
= va
-> reg
;
278 /* ссылка уже на стеке */
279 jvm_generate(p
, 1, 0, "astore %i", reg_a
);
282 gen_var_t
* vi
= oberon_generator_new_var();
283 jvm_generate_and_init_local_var(vi
, p
, false);
284 int reg_i
= vi
-> reg
;
285 jvm_generate(p
, 0, 1, "iconst_0");
286 jvm_generate(p
, 1, 0, "istore %i", reg_i
);
288 /* int l := a.length */
289 gen_var_t
* vl
= oberon_generator_new_var();
290 jvm_generate_and_init_local_var(vl
, p
, false);
291 int reg_l
= vl
-> reg
;
292 jvm_generate(p
, 0, 1, "aload %i", reg_a
);
293 jvm_generate(p
, 1, 1, "arraylength");
294 jvm_generate(p
, 1, 0, "istore %i", reg_l
);
296 int label_start
= jvm_new_label_id(p
);
297 int label_end
= jvm_new_label_id(p
);
300 /* if (i >= l) goto end; */
307 jvm_generate_label(p
, label_start
);
308 jvm_generate(p
, 0, 1, "iload %i", reg_i
);
309 jvm_generate(p
, 0, 1, "iload %i", reg_l
);
310 jvm_generate(p
, 2, 0, "if_icmpge L%i", label_end
);
312 if(type
-> base
-> class == OBERON_TYPE_ARRAY
)
314 /* Инициализируем следующую размерность */
315 jvm_generate(p
, 0, 1, "aload %i", reg_a
);
316 jvm_generate(p
, 0, 1, "iload %i", reg_i
);
317 jvm_generate(p
, 0, 1, "aaload");
318 jvm_generate_static_array_initialization(p
, type
-> base
);
319 jvm_generate(p
, 1, 0, "pop");
321 else if(type
-> base
-> class == OBERON_TYPE_RECORD
)
323 jvm_generate(p
, 0, 1, "aload %i", reg_a
);
324 jvm_generate(p
, 0, 1, "iload %i", reg_i
);
325 jvm_generate_new(p
, type
-> base
, 0);
326 jvm_generate(p
, 3, 0, "aastore");
336 jvm_generate(p
, 0, 0, "iinc %i %i", reg_i
, 1);
337 jvm_generate(p
, 0, 0, "goto L%i", label_start
);
338 jvm_generate_label(p
, label_end
);
341 jvm_generate(p
, 0, 1, "aload %i", reg_a
);
343 /* TODO освобождение регистров */
347 jvm_generate_new(gen_proc_t
* p
, oberon_type_t
* type
, int num
)
352 oberon_type_t
* base
;
354 switch(type
-> class)
356 case OBERON_TYPE_INTEGER
:
357 case OBERON_TYPE_BOOLEAN
:
358 case OBERON_TYPE_PROCEDURE
:
359 case OBERON_TYPE_REAL
:
360 case OBERON_TYPE_POINTER
:
361 gen_error("jvm_generate_new_static: static alocation not allowed");
363 case OBERON_TYPE_RECORD
:
364 cname
= jvm_get_class_full_name(type
);
365 jvm_generate(p
, 0, 1, "new %s", cname
);
366 jvm_generate(p
, 1, 2, "dup");
367 jvm_generate(p
, 1, 0, "invokespecial %s/<init>()V", cname
);
369 case OBERON_TYPE_ARRAY
:
372 desc
= jvm_get_descriptor(type
);
373 while(base
-> class == OBERON_TYPE_ARRAY
)
377 assert(base
-> size
== 0);
382 assert(base
-> size
> 0);
383 jvm_generate_push_int(p
, base
-> size
);
390 jvm_generate(p
, dim
, 1, "multianewarray %s %i", desc
, dim
);
392 if(base
-> class == OBERON_TYPE_RECORD
)
394 jvm_generate_static_array_initialization(p
, type
);
398 gen_error("jvm_generate_new_static: unk type class %i", type
-> class);
404 jvm_generate_store(gen_proc_t
* p
, oberon_type_t
* src_type
, gen_var_t
* dst
)
409 cell_size
= jvm_cell_size_for_type(src_type
);
411 switch(dst
-> storage
)
413 case JVM_STORAGE_REGISTER
:
414 prefix
= jvm_get_prefix(src_type
);
415 jvm_generate(p
, cell_size
, 0, "%cstore %i", prefix
, dst
-> reg
);
417 case JVM_STORAGE_STATIC
:
418 jvm_generate(p
, cell_size
, 0, "putstatic %s %s", dst
-> full_name
, dst
-> desc
);
420 case JVM_STORAGE_FIELD
:
421 jvm_generate(p
, 1 + cell_size
, 0, "putfield %s %s", dst
-> full_name
, dst
-> desc
);
424 gen_error("jvm_generate_store: unknow storage type %i", dst
-> storage
);
429 // ==========================================
430 // ==========================================
431 // ==========================================
434 oberon_generator_init_context(oberon_context_t
* ctx
)
436 gen_context_t
* gen_context
= GC_MALLOC(sizeof *gen_context
);
437 memset(gen_context
, 0, sizeof *gen_context
);
439 ctx
-> gen_context
= gen_context
;
443 oberon_generator_destroy_context(oberon_context_t
* ctx
)
448 oberon_generate_procedure_class(oberon_type_t
* proc
)
453 struct gen_class
* class;
455 cname
= jvm_get_class_full_name(proc
);
456 class = jvm_create_class(cname
);
459 fprintf(fp
, ".source SYSTEM\n");
460 fprintf(fp
, ".class public abstract %s\n", cname
);
461 fprintf(fp
, ".super java/lang/Object\n\n");
463 fprintf(fp
, ".method public <init>()V\n");
464 fprintf(fp
, " aload_0\n");
465 fprintf(fp
, " invokespecial java/lang/Object/<init>()V\n");
466 fprintf(fp
, " return\n");
467 fprintf(fp
, ".end method\n\n");
469 signature
= jvm_get_procedure_signature(proc
);
471 fprintf(fp
, ".method public abstract invoke%s\n", signature
);
472 fprintf(fp
, ".end method\n\n");
474 jvm_destroy_class(class);
478 oberon_generate_record_class(gen_module_t
* m
, oberon_type_t
* rec
)
481 struct gen_class
* class;
483 /* Устанавливаем новоый id */
484 rec
-> gen_type
-> rec_id
= m
-> rec_id
;
487 cname
= jvm_get_class_full_name(rec
);
488 class = jvm_create_class(cname
);
490 fprintf(class -> fp
, ".source %s\n", rec
-> module
-> name
);
491 fprintf(class -> fp
, ".class public %s\n", cname
);
492 fprintf(class -> fp
, ".super java/lang/Object\n\n");
494 rec
-> gen_type
-> class = class;
498 oberon_generator_init_type(oberon_context_t
* ctx
, oberon_type_t
* type
)
500 gen_type_t
* t
= GC_MALLOC(sizeof *t
);
501 memset(t
, 0, sizeof *t
);
502 type
-> gen_type
= t
;
504 switch(type
-> class)
506 case OBERON_TYPE_VOID
:
507 case OBERON_TYPE_INTEGER
:
508 case OBERON_TYPE_BOOLEAN
:
509 case OBERON_TYPE_ARRAY
:
510 case OBERON_TYPE_REAL
:
512 case OBERON_TYPE_RECORD
:
515 m
= type
-> module
-> gen_mod
;
516 oberon_generate_record_class(m
, type
);
518 case OBERON_TYPE_PROCEDURE
:
519 oberon_generate_procedure_class(type
);
521 case OBERON_TYPE_POINTER
:
524 gen_error("oberon_generator_init_type: unk calss %i", type
-> class);
530 oberon_generator_init_record(oberon_context_t
* ctx
, oberon_type_t
* rec
)
532 struct gen_class
* class;
533 class = rec
-> gen_type
-> class;
535 int num
= rec
-> num_decl
;
536 oberon_object_t
* field
= rec
-> decl
;
537 for(int i
= 0; i
< num
; i
++)
539 gen_var_t
* v
= field
-> gen_var
;
540 char * name
= field
-> name
;
541 char * desc
= jvm_get_descriptor(field
-> type
);
542 jvm_generate_and_init_field(v
, class, "public", name
, desc
);
543 field
= field
-> next
;
546 gen_proc_t
* p
= jvm_create_proc(class);
548 jvm_generate_function_header(p
, "public", "<init>", "()V");
549 jvm_alloc_register_untyped(p
-> rf
, false);
550 jvm_generate(p
, 0, 1, "aload_0");
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 if(field
-> type
-> class == OBERON_TYPE_RECORD
558 || field
-> type
-> class == OBERON_TYPE_ARRAY
)
560 jvm_generate(p
, 0, 1, "aload_0");
561 jvm_generate_new(p
, field
-> type
, 0);
562 jvm_generate_store(p
, field
-> type
, field
-> gen_var
);
564 field
= field
-> next
;
567 jvm_generate(p
, 0, 0, "return");
568 jvm_generate_function_end(p
);
570 jvm_destroy_class(class);
574 oberon_generator_init_var(oberon_context_t
* ctx
, oberon_object_t
* var
)
576 gen_var_t
* v
= oberon_generator_new_var();
580 m
= ctx
-> mod
-> gen_mod
;
582 struct gen_class
* class;
588 case OBERON_CLASS_VAR_PARAM
:
589 gen_error("generator: VAR-parameters not implemented");
591 case OBERON_CLASS_PARAM
:
592 /* Заполняется при генерации функции */
593 /* смотри jvm_init_local_object() */
595 case OBERON_CLASS_FIELD
:
596 /* Заполняются при инициализации структуры */
597 /* смотри oberon_generator_init_record() */
599 case OBERON_CLASS_VAR
:
600 /* Локальные заполняются при генерации функции */
601 /* смотри jvm_init_local_object() */
602 if(var
-> local
== 0)
604 desc
= jvm_get_descriptor(var
-> type
);
605 jvm_generate_and_init_global_var(v
, class, "public", var
-> name
, desc
);
609 gen_error("oberon_generator_init_var: unk var class %i", var
-> class);
615 oberon_generator_init_proc(oberon_context_t
* ctx
, oberon_object_t
* proc
)
617 struct gen_class
* class = proc
-> module
-> gen_mod
-> class;
618 proc
-> gen_proc
= jvm_create_proc(class);
622 gen_error("generator: local procedures not implemented");
627 oberon_generator_init_module(oberon_context_t
* ctx
, oberon_module_t
* mod
)
629 gen_module_t
* m
= GC_MALLOC(sizeof *m
);
630 memset(m
, 0, sizeof *m
);
633 struct gen_class
* class;
634 class = jvm_create_class(mod
-> name
);
636 fprintf(class -> fp
, ".source %s\n", mod
-> name
);
637 fprintf(class -> fp
, ".class %s\n", mod
-> name
);
638 fprintf(class -> fp
, ".super java/lang/Object\n\n");
642 ctx
-> gen_context
-> current_m
= m
;
646 oberon_generator_fini_module(oberon_module_t
* mod
)
648 jvm_destroy_class(mod
-> gen_mod
-> class);
652 push_expr(gen_proc_t
* p
, oberon_expr_t
* expr
);
655 oberon_generate_begin_module(oberon_context_t
* ctx
)
657 struct gen_class
* class = ctx
-> mod
-> gen_mod
-> class;
658 gen_proc_t
* p
= jvm_create_proc(class);
660 jvm_generate_function_header(p
, "public", "<init>", "()V");
661 jvm_alloc_register_untyped(p
-> rf
, false);
662 jvm_generate(p
, 0, 1, "aload_0");
663 jvm_generate(p
, 1, 0, "invokespecial java/lang/Object/<init>()V");
665 /* Инициализация переменных объявленных в модуле */
666 oberon_object_t
* x
= ctx
-> mod
-> decl
-> list
-> next
;
669 if(x
-> class == OBERON_CLASS_VAR
)
671 if(x
-> type
-> class == OBERON_TYPE_ARRAY
672 || x
-> type
-> class == OBERON_TYPE_RECORD
)
674 jvm_generate_new(p
, x
-> type
, 0);
675 jvm_generate_store(p
, x
-> type
, x
-> gen_var
);
683 oberon_generate_end_module(oberon_context_t
* ctx
)
685 struct gen_class
* class = ctx
-> mod
-> gen_mod
-> class;
686 gen_proc_t
* p
= class -> p
;
688 jvm_generate(p
, 0, 0, "return");
689 jvm_generate_function_end(class -> p
);
693 jvm_init_local_object(gen_proc_t
* p
, oberon_object_t
* x
)
698 struct gen_class
* class;
702 wide
= jvm_is_wide_type(x
-> type
);
703 desc
= jvm_get_descriptor(x
-> type
);
705 // Убеждаемся что сейчас находимся в функции
711 case OBERON_CLASS_VAR
:
712 case OBERON_CLASS_PARAM
:
713 jvm_generate_and_init_named_local_var(v
, p
, wide
, x
-> name
, desc
);
716 gen_error("jvm_init_local_object: wat");
722 oberon_generate_begin_proc(oberon_context_t
* ctx
, oberon_object_t
* proc
)
727 p
= proc
-> gen_proc
;
729 signature
= jvm_get_procedure_signature(proc
-> type
);
731 jvm_generate_function_header(p
, "public static", proc
-> name
, signature
);
733 oberon_object_t
* var
= proc
-> type
-> decl
;
736 jvm_init_local_object(p
, var
);
742 oberon_generate_end_proc(oberon_context_t
* ctx
)
747 m
= ctx
-> mod
-> gen_mod
;
750 jvm_generate_function_end(p
);
754 jvm_generate_call_proc(gen_proc_t
* p
, oberon_expr_t
* desig
)
756 assert(desig
-> is_item
);
757 assert(desig
-> item
.mode
== MODE_CALL
);
759 oberon_object_t
* proc
;
763 proc
= desig
-> item
.var
;
764 fullname
= jvm_get_field_full_name(proc
);
765 signature
= jvm_get_procedure_signature(proc
-> type
);
768 int result_cells
= jvm_cell_size_for_type(proc
-> type
-> base
);
770 int num
= desig
-> item
.num_args
;
771 oberon_expr_t
* arg
= desig
-> item
.args
;
772 for(int i
= 0; i
< num
; i
++)
774 args_cells
+= jvm_cell_size_for_type(arg
-> result
);
779 jvm_generate(p
, args_cells
, result_cells
, "invokestatic %s%s", fullname
, signature
);
783 oberon_generate_call_proc(oberon_context_t
* ctx
, oberon_expr_t
* desig
)
785 jvm_generate_call_proc(ctx
-> gen_context
-> current_m
-> class -> p
, desig
);
789 oberon_generate_return(oberon_context_t
* ctx
, oberon_expr_t
* expr
)
796 m
= ctx
-> mod
-> gen_mod
;
802 prefix
= jvm_get_prefix(expr
-> result
);
803 cell_size
= jvm_cell_size_for_type(expr
-> result
);
804 jvm_generate(p
, cell_size
, 0, "%creturn", prefix
);
808 jvm_generate(p
, 0, 0, "return");
813 jvm_push_var(gen_proc_t
* p
, oberon_object_t
* var
)
815 int cell_size
= jvm_cell_size_for_type(var
-> type
);
819 int reg
= var
-> gen_var
-> reg
;
820 char prefix
= jvm_get_prefix(var
-> type
);
821 jvm_generate(p
, 0, cell_size
, "%cload %i", prefix
, reg
);
825 char * fullname
= jvm_get_field_full_name(var
);
826 char * desc
= jvm_get_descriptor(var
-> type
);
827 jvm_generate(p
, 0, cell_size
, "getstatic %s %s", fullname
, desc
);
832 jvm_generate_expr_new_pointer(gen_proc_t
* p
, oberon_type_t
* type
, int num
, oberon_expr_t
* arg
)
834 assert(type
-> class == OBERON_TYPE_POINTER
);
836 for(int i
= 0; i
< num
; i
++)
842 jvm_generate_new(p
, type
-> base
, num
);
846 push_item(gen_proc_t
* p
, oberon_item_t
* item
)
851 jvm_push_var(p
, item
-> var
);
854 jvm_generate_push_int(p
, item
-> integer
);
857 jvm_generate_push_int(p
, item
-> boolean
);
860 jvm_generate_call_proc(p
, (oberon_expr_t
*) item
);
864 char postfix
= jvm_get_postfix(item
-> result
);
865 int cell_size
= jvm_cell_size_for_postfix(postfix
);
866 push_item(p
, item
-> parent
);
867 push_expr(p
, item
-> args
);
868 jvm_generate(p
, 1 + 1, cell_size
, "%caload", postfix
);
871 push_item(p
, item
-> parent
);
872 char * field
= jvm_get_field_full_name(item
-> var
);
873 char * desc
= jvm_get_descriptor(item
-> var
-> type
);
874 jvm_generate(p
, 1, 1, "getfield %s %s", field
, desc
);
877 /* Все объекты представляются как увказатели */
878 push_item(p
, item
-> parent
);
881 jvm_generate(p
, 0, 1, "aconst_null");
884 jvm_generate_expr_new_pointer(p
, item
-> result
, item
-> num_args
, item
-> args
);
887 jvm_generate_push_float(p
, item
-> real
, item
-> result
-> size
);
890 gen_error("push_item: unk mode %i", item
-> mode
);
896 jvm_generate_logical_not(gen_proc_t
* p
)
898 int label_done
= jvm_new_label_id(p
);
899 int label_false
= jvm_new_label_id(p
);
900 char * label_name_done
= jvm_get_label_name(label_done
);
901 char * label_name_false
= jvm_get_label_name(label_false
);
903 jvm_generate(p
, 1, 0, "ifne %s", label_name_false
);
904 jvm_generate(p
, 0, 1, "iconst_1");
905 jvm_generate(p
, 0, 0, "goto %s", label_name_done
);
906 jvm_generate_label(p
, label_false
);
907 jvm_generate(p
, 0, 1, "iconst_0");
908 jvm_generate_label(p
, label_done
);
912 jvm_generate_abs(gen_proc_t
* p
, char prefix
)
914 char t
= jvm_get_type_of_prefix(prefix
);
915 int cell_size
= jvm_cell_size_for_postfix(prefix
);
916 jvm_generate(p
, cell_size
, cell_size
, "invokestatic java/lang/Math/abs(%c)%c", t
, t
);
920 jvm_generate_compare_op(gen_proc_t
* p
, char prefix
, int op
)
922 int label_true
= jvm_new_label_id(p
);
923 int label_done
= jvm_new_label_id(p
);
924 char * label_name_true
= jvm_get_label_name(label_true
);
925 char * label_name_done
= jvm_get_label_name(label_done
);
926 int cell_size
= 2 * jvm_cell_size_for_postfix(prefix
);
928 assert(prefix
== 'i' || prefix
== 'a');
930 const char * cmpop
= "";
952 gen_error("jvm_generate_compare_op: wat");
956 jvm_generate(p
, cell_size
, 0, "if_%ccmp%s %s", prefix
, cmpop
, label_name_true
);
957 jvm_generate(p
, 0, 1, "iconst_0");
958 jvm_generate(p
, 0, 0, "goto %s", label_name_done
);
959 jvm_generate_label(p
, label_true
);
960 jvm_generate(p
, 0, 1, "iconst_1");
961 jvm_generate_label(p
, label_done
);
965 jvm_generate_operator(gen_proc_t
* p
, char prefix
, int op
)
967 int cell_size
= jvm_cell_size_for_postfix(prefix
);
971 jvm_generate(p
, cell_size
, cell_size
, "%cneg", prefix
);
974 jvm_generate_push_int(p
, -1);
975 jvm_generate(p
, 2 * cell_size
, cell_size
, "%cxor", prefix
);
978 jvm_generate_logical_not(p
);
981 jvm_generate_abs(p
, prefix
);
985 jvm_generate(p
, 2 * cell_size
, cell_size
, "%cadd", prefix
);
988 jvm_generate(p
, 2 * cell_size
, cell_size
, "%csub", prefix
);
991 jvm_generate(p
, 2 * cell_size
, cell_size
, "%cmul", prefix
);
994 jvm_generate(p
, 2 * cell_size
, cell_size
, "%cdiv", prefix
);
997 jvm_generate(p
, 2 * cell_size
, cell_size
, "%crem", prefix
);
1000 jvm_generate(p
, 2 * cell_size
, cell_size
, "%cand", prefix
);
1002 case OP_BITWISE_XOR
:
1003 jvm_generate(p
, 2 * cell_size
, cell_size
, "%cxor", prefix
);
1006 jvm_generate(p
, 2 * cell_size
, cell_size
, "%cor", prefix
);
1015 jvm_generate_compare_op(p
, prefix
, op
);
1018 gen_error("jvm_generate_operator: unk op %i", op
);
1024 jvm_generate_logical_or(gen_proc_t
* p
, oberon_expr_t
* a
, oberon_expr_t
* b
)
1026 int label_calc_b
= jvm_new_label_id(p
);
1027 int label_done
= jvm_new_label_id(p
);
1028 char * label_name_calc_b
= jvm_get_label_name(label_calc_b
);
1029 char * label_name_done
= jvm_get_label_name(label_done
);
1031 /* a OR b -- если a, то TRUE, иначе b */
1034 jvm_generate(p
, 1, 0, "ifne %s", label_name_calc_b
);
1035 jvm_generate(p
, 0, 1, "iconst_1");
1036 jvm_generate(p
, 0, 0, "goto %s", label_name_done
);
1037 jvm_generate_label(p
, label_calc_b
);
1039 jvm_generate_label(p
, label_done
);
1043 jvm_generate_logical_and(gen_proc_t
* p
, oberon_expr_t
* a
, oberon_expr_t
* b
)
1045 int label_false
= jvm_new_label_id(p
);
1046 int label_done
= jvm_new_label_id(p
);
1047 char * label_name_false
= jvm_get_label_name(label_false
);
1048 char * label_name_done
= jvm_get_label_name(label_done
);
1050 /* a AND b -- если a, то b, иначе FALSE */
1053 jvm_generate(p
, 1, 0, "ifne %s", label_name_false
);
1055 jvm_generate(p
, 0, 0, "goto %s", label_name_done
);
1056 jvm_generate_label(p
, label_false
);
1057 jvm_generate(p
, 0, 1, "iconst_0");
1058 jvm_generate_label(p
, label_done
);
1062 push_operator(gen_proc_t
* p
, oberon_oper_t
* oper
)
1064 char prefix
= jvm_get_prefix(oper
-> result
);
1065 int op
= oper
-> op
;
1068 case OP_UNARY_MINUS
:
1069 case OP_BITWISE_NOT
:
1072 push_expr(p
, oper
-> left
);
1073 jvm_generate_operator(p
, prefix
, op
);
1081 case OP_BITWISE_AND
:
1082 case OP_BITWISE_XOR
:
1091 push_expr(p
, oper
-> left
);
1092 push_expr(p
, oper
-> right
);
1093 jvm_generate_operator(p
, prefix
, op
);
1097 jvm_generate_logical_or(p
, oper
-> left
, oper
-> right
);
1100 jvm_generate_logical_and(p
, oper
-> left
, oper
-> right
);
1103 gen_error("push_oper: unk op %i", op
);
1109 push_expr(gen_proc_t
* p
, oberon_expr_t
* expr
)
1113 push_item(p
, (oberon_item_t
*) expr
);
1117 push_operator(p
, (oberon_oper_t
*) expr
);
1122 store_expr(gen_proc_t
* p
, oberon_expr_t
* dst
, oberon_expr_t
* src
)
1124 assert(dst
-> is_item
);
1125 oberon_item_t
* item
= (oberon_item_t
*) dst
;
1127 if(dst
-> result
-> class == OBERON_TYPE_ARRAY
1128 || src
-> result
-> class == OBERON_TYPE_ARRAY
)
1130 gen_error("array copy not implemented");
1132 else if(dst
-> result
-> class == OBERON_TYPE_RECORD
1133 || src
-> result
-> class == OBERON_TYPE_RECORD
)
1135 gen_error("record copy not implemented");
1138 switch(item
-> mode
)
1142 jvm_generate_store(p
, src
-> result
, item
-> var
-> gen_var
);
1146 char postfix
= jvm_get_postfix(src
-> result
);
1147 int cell_size
= jvm_cell_size_for_postfix(postfix
);
1148 push_item(p
, item
-> parent
);
1149 push_expr(p
, item
-> args
);
1151 jvm_generate(p
, 1 + 1 + cell_size
, 0, "%castore", postfix
);
1154 push_item(p
, item
-> parent
);
1156 jvm_generate_store(p
, src
-> result
, item
-> var
-> gen_var
);
1159 gen_error("store_expr: unk mode %i", item
-> mode
);
1165 oberon_generate_assign(oberon_context_t
* ctx
, oberon_expr_t
* src
, oberon_expr_t
* dst
)
1170 m
= ctx
-> mod
-> gen_mod
;
1171 p
= m
-> class -> p
;
1173 store_expr(p
, dst
, src
);
1177 oberon_generate_code(oberon_context_t
* ctx
)
1179 printf("generate code\n");
1183 oberon_generator_dump(oberon_context_t
* ctx
, char * path
)
1185 printf("jit: dump code\n");
1189 oberon_generator_get_procedure(oberon_context_t
* ctx
, const char * name
)
1191 printf("jit: get pointer to procedure %s\n", name
);
1196 oberon_generator_get_var(oberon_context_t
* ctx
, const char * name
)
1198 printf("jit: get pointer to var %s\n", name
);