2b9b5483efa3b7b76050a4c105d3cb4b20dc655c
10 #include "../../../include/oberon.h"
11 #include "../../oberon-internals.h"
12 #include "generator-jvm.h"
13 #include "generator-jvm-basic.h"
16 new_string(const char * format
, ...)
19 va_start(ptr
, format
);
22 vsnprintf(buf
, 1024, format
, ptr
);
30 result
= GC_MALLOC(size
+ 1);
31 memset(result
, 0, size
);
32 strncpy(result
, buf
, size
);
38 gen_error(const char * fmt
, ...)
42 fprintf(stderr
, "generator: ");
43 vfprintf(stderr
, fmt
, ptr
);
44 fprintf(stderr
, "\n");
50 jvm_get_descriptor(oberon_type_t
* type
)
56 case OBERON_TYPE_VOID
:
57 return new_string("V");
59 case OBERON_TYPE_INTEGER
:
63 return new_string("B");
66 return new_string("S");
69 return new_string("I");
72 return new_string("J");
75 gen_error("jvm_get_descriptor: unsupported int size %i", type
-> size
);
79 case OBERON_TYPE_REAL
:
83 return new_string("F");
86 return new_string("D");
89 gen_error("jvm_get_descriptor: unsupported float size %i", type
-> size
);
93 case OBERON_TYPE_BOOLEAN
:
94 return new_string("Z");
96 case OBERON_TYPE_POINTER
:
97 return jvm_get_descriptor(type
-> base
);
99 case OBERON_TYPE_PROCEDURE
:
100 case OBERON_TYPE_RECORD
:
101 desc
= jvm_get_class_full_name(type
);
102 return new_string("L%s;", desc
);
104 case OBERON_TYPE_ARRAY
:
105 desc
= jvm_get_descriptor(type
-> base
);
106 return new_string("[%s", desc
);
109 gen_error("jvm_get_descriptor: unsupported type class %i", type
-> class);
117 jvm_get_prefix(oberon_type_t
* type
)
119 int size
= type
-> size
;
120 switch(type
-> class)
122 case OBERON_TYPE_BOOLEAN
:
123 case OBERON_TYPE_INTEGER
:
124 return (size
<= 4) ? ('i') : ('l');
126 case OBERON_TYPE_PROCEDURE
:
127 case OBERON_TYPE_ARRAY
:
128 case OBERON_TYPE_RECORD
:
129 case OBERON_TYPE_POINTER
:
132 case OBERON_TYPE_REAL
:
133 return (size
<= 4) ? ('f') : ('d');
137 gen_error("jvm_get_prefix: wat");
142 jvm_get_postfix(oberon_type_t
* type
)
144 int size
= type
-> size
;
145 switch(type
-> class)
147 case OBERON_TYPE_BOOLEAN
:
150 case OBERON_TYPE_INTEGER
:
166 gen_error("jvm_get_postfix: int wat");
170 case OBERON_TYPE_PROCEDURE
:
171 case OBERON_TYPE_ARRAY
:
172 case OBERON_TYPE_RECORD
:
173 case OBERON_TYPE_POINTER
:
176 case OBERON_TYPE_REAL
:
177 return (size
<= 4) ? ('f') : ('d');
180 gen_error("jvm_get_postfix: wat");
188 jvm_get_field_full_name(oberon_object_t
* x
)
192 case OBERON_CLASS_VAR
:
193 case OBERON_CLASS_PROC
:
194 return new_string("%s/%s", x
-> module
-> name
, x
-> name
);
195 case OBERON_CLASS_FIELD
:;
196 char * rec_name
= jvm_get_class_full_name(x
-> parent_type
);
197 return new_string("%s/%s", rec_name
, x
-> name
);
198 case OBERON_CLASS_MODULE
:
199 return new_string(x
-> module
-> name
);
201 gen_error("jvm_get_field_full_name: wat");
209 jvm_get_field_full_name_safe(oberon_object_t
* x
)
213 case OBERON_CLASS_VAR
:
214 case OBERON_CLASS_PROC
:
215 return new_string("%s$%s", x
-> module
-> name
, x
-> name
);
216 case OBERON_CLASS_FIELD
:;
217 char * rec_name
= jvm_get_class_full_name(x
-> parent_type
);
218 return new_string("%s$%s", rec_name
, x
-> name
);
219 case OBERON_CLASS_MODULE
:
220 return new_string(x
-> module
-> name
);
222 gen_error("jvm_get_field_full_name: wat");
230 jvm_get_class_full_name(oberon_type_t
* type
)
235 switch(type
-> class)
237 case OBERON_TYPE_POINTER
:
238 name
= jvm_get_class_full_name(type
-> base
);
240 case OBERON_TYPE_PROCEDURE
:
241 name
= new_string("SYSTEM$PROCEDURE");
244 desc
= jvm_get_descriptor(type
-> base
);
245 name
= new_string("%s$%s", name
, desc
);
247 int num
= type
-> num_decl
;
248 oberon_object_t
* arg
= type
-> decl
;
249 for(int i
= 0; i
< num
; i
++)
251 desc
= jvm_get_descriptor(arg
-> type
);
252 name
= new_string("%s%s", name
, desc
);
257 case OBERON_TYPE_RECORD
:
258 rec_id
= type
-> gen_type
-> rec_id
;
259 name
= new_string("%s$RECORD%i", type
-> module
-> name
, rec_id
);
262 gen_error("jvm_get_class_full_name: unk type class %i", type
-> class);
270 jvm_get_procedure_signature(oberon_type_t
* proc
)
275 signature
= new_string("(");
277 int num
= proc
-> num_decl
;
278 oberon_object_t
* arg
= proc
-> decl
;
279 for(int i
= 0; i
< num
; i
++)
281 desc
= jvm_get_descriptor(arg
-> type
);
282 signature
= new_string("%s%s", signature
, desc
);
286 desc
= jvm_get_descriptor(proc
-> base
);
287 signature
= new_string("%s)%s", signature
, desc
);
293 jvm_cell_size_for_type(oberon_type_t
* type
)
295 if(type
-> class == OBERON_TYPE_INTEGER
296 || type
-> class == OBERON_TYPE_REAL
)
308 jvm_cell_size_for_postfix(char postfix
)
322 gen_error("jvm_cell_size_for_postfix: unk postfix %c", postfix
);
329 jvm_is_wide_type(oberon_type_t
* type
)
332 cell
= jvm_cell_size_for_type(type
);
338 jvm_is_free_register(struct gen_register_file
* rf
, int i
, bool wide
)
342 assert(i
+ 1 < MAX_REGISTERS
);
343 return !(rf
-> reg
[i
].used
|| rf
-> reg
[i
+ 1].used
);
347 assert(i
< MAX_REGISTERS
);
348 return !(rf
-> reg
[i
].used
);
353 jvm_alloc_register_untyped(struct gen_register_file
* rf
, bool wide
)
356 while(i
< MAX_REGISTERS
&& !jvm_is_free_register(rf
, i
, wide
))
363 assert(i
+ 1 <= MAX_REGISTERS
);
365 rf
-> reg
[i
].used
= true;
366 rf
-> reg
[i
+ 1].used
= true;
367 rf
-> reg
[i
].used
= true;
368 rf
-> reg
[i
+ 1].wide
= false;
372 assert(i
<= MAX_REGISTERS
);
374 rf
-> reg
[i
].used
= true;
375 rf
-> reg
[i
].wide
= false;
378 if(rf
-> num_used
> rf
-> max_used
)
380 rf
-> max_used
= rf
-> num_used
;
387 jvm_alloc_register(struct gen_register_file
* rf
, oberon_type_t
* type
)
390 wide
= jvm_is_wide_type(type
);
391 return jvm_alloc_register_untyped(rf
, wide
);
395 jvm_get_type_of_prefix(char prefix
)