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_field_full_name(oberon_object_t
* x
)
146 case OBERON_CLASS_VAR
:
147 return new_string("%s/%s", x
-> module
-> name
, x
-> name
);
148 case OBERON_CLASS_FIELD
:;
149 char * rec_name
= jvm_get_class_full_name(x
-> parent_type
);
150 return new_string("%s/%s", rec_name
, x
-> name
);
151 case OBERON_CLASS_MODULE
:
152 return new_string(x
-> module
-> name
);
154 gen_error("jvm_get_field_full_name: wat");
162 jvm_get_class_full_name(oberon_type_t
* type
)
167 switch(type
-> class)
169 case OBERON_TYPE_PROCEDURE
:
170 name
= new_string("SYSTEM$PROCEDURE");
173 desc
= jvm_get_descriptor(type
-> base
);
174 name
= new_string("%s$%s", name
, desc
);
176 int num
= type
-> num_decl
;
177 oberon_object_t
* arg
= type
-> decl
;
178 for(int i
= 0; i
< num
; i
++)
180 desc
= jvm_get_descriptor(arg
-> type
);
181 name
= new_string("%s%s", name
, desc
);
186 case OBERON_TYPE_RECORD
:
187 rec_id
= type
-> gen_type
-> rec_id
;
188 name
= new_string("%s$RECORD%i", type
-> module
-> name
, rec_id
);
191 gen_error("jvm_get_class_full_name: unk type class %i", type
-> class);
199 jvm_get_procedure_signature(oberon_type_t
* proc
)
204 signature
= new_string("(");
206 int num
= proc
-> num_decl
;
207 oberon_object_t
* arg
= proc
-> decl
;
208 for(int i
= 0; i
< num
; i
++)
210 desc
= jvm_get_descriptor(arg
-> type
);
211 signature
= new_string("%s%s", signature
, desc
);
215 desc
= jvm_get_descriptor(proc
-> base
);
216 signature
= new_string("%s)%s", signature
, desc
);
222 jvm_cell_size_for_type(oberon_type_t
* type
)
224 if(type
-> class == OBERON_TYPE_INTEGER
225 || type
-> class == OBERON_TYPE_REAL
)
237 jvm_cell_size_for_prefix(char prefix
)
252 gen_error("jvm_cell_size_for_prefix: unk prefix %c", prefix
);
259 jvm_is_wide_type(oberon_type_t
* type
)
262 cell
= jvm_cell_size_for_type(type
);
268 jvm_is_free_register(struct gen_register_file
* rf
, int i
, bool wide
)
272 assert(i
+ 1 < MAX_REGISTERS
);
273 return !(rf
-> reg
[i
].used
|| rf
-> reg
[i
+ 1].used
);
277 assert(i
< MAX_REGISTERS
);
278 return !(rf
-> reg
[i
].used
);
283 jvm_alloc_register_untyped(struct gen_register_file
* rf
, bool wide
)
286 while(i
< MAX_REGISTERS
&& !jvm_is_free_register(rf
, i
, wide
))
293 assert(i
+ 1 <= MAX_REGISTERS
);
295 rf
-> reg
[i
].used
= true;
296 rf
-> reg
[i
+ 1].used
= true;
297 rf
-> reg
[i
].used
= true;
298 rf
-> reg
[i
+ 1].wide
= false;
302 assert(i
<= MAX_REGISTERS
);
304 rf
-> reg
[i
].used
= true;
305 rf
-> reg
[i
].wide
= false;
308 if(rf
-> num_used
> rf
-> max_used
)
310 rf
-> max_used
= rf
-> num_used
;
317 jvm_alloc_register(struct gen_register_file
* rf
, oberon_type_t
* type
)
320 wide
= jvm_is_wide_type(type
);
321 return jvm_alloc_register_untyped(rf
, wide
);
325 jvm_get_type_of_prefix(char prefix
)