src/backends/jvm/generator-jvm.h

   1 #define MAX_REGISTERS 256
   2
   3 struct gen_register_file
   4 {
   5         struct
   6         {
   7                 bool used;
   8                 bool wide;
   9         } reg[MAX_REGISTERS];
  10         int num_used;
  11         int max_used;
  12 };
  13
  14 struct gen_stack
  15 {
  16         int pointer;
  17         int max_pointer;
  18 };
  19
  20 struct gen_class
  21 {
  22         char * full_name;
  23         FILE * fp;
  24         gen_proc_t * p;
  25         struct gen_class * base;
  26 };
  27
  28 enum gen_storage
  29 {
  30         JVM_STORAGE_UNKNOWN,
  31         /* Обыкновенные Java-переменные */
  32         JVM_STORAGE_REGISTER,
  33         JVM_STORAGE_STATIC,
  34         JVM_STORAGE_FIELD,
  35         JVM_STORAGE_PARAM,
  36         /* Переменные на которые можно делать указатели без кеширования */
  37         JVM_STORAGE_REGISTER_VAR,
  38         JVM_STORAGE_STATIC_VAR,
  39         JVM_STORAGE_FIELD_VAR,
  40         JVM_STORAGE_PARAM_VAR,
  41         JVM_STORAGE_PARAM_VARPTR,
  42         /* Локальные переменные доступные локальным функциям */
  43         JVM_STORAGE_FRAME,
  44         JVM_STORAGE_FRAME_VAR,
  45         JVM_STORAGE_FRAME_PARAM,
  46         JVM_STORAGE_FRAME_PARAM_VAR,
  47         JVM_STORAGE_FRAME_PARAM_VARPTR
  48 };
  49
  50
  51 struct gen_proc_t
  52 {
  53         char * full_name;
  54         int label_id;
  55         gen_var_t * frame_v;
  56         gen_type_t * frame_t;
  57         struct gen_register_file * rf;
  58         struct gen_stack * stack;
  59         struct gen_class * class;
  60 };
  61
  62 struct gen_type_t
  63 {
  64         int rec_id;
  65         struct gen_class * class;
  66
  67         bool wide;
  68         char prefix;
  69         char postfix;
  70         char * desc;
  71         int cell_size;
  72 };
  73
  74 struct gen_var_t
  75 {
  76         enum gen_storage storage;
  77         gen_type_t * type;
  78         int reg;
  79
  80         char * name;
  81         char * full_name;
  82         gen_proc_t * p;
  83         struct gen_class * class;
  84 };
  85
  86 struct gen_context_t
  87 {
  88         gen_module_t * current_m;
  89 };
  90
  91 struct gen_module_t
  92 {
  93         struct gen_class * class;
  94         int rec_id;
  95 };
  96
  97 struct gen_label_t
  98 {
  99         int id;
 100 };