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         struct gen_register_file * rf;
  56         struct gen_stack * stack;
  57         struct gen_class * class;
  58
  59         int level;
  60         int max_frames;
  61         int * reg_frame;
  62         gen_var_t * frame_v;
  63 };
  64
  65 struct gen_type_t
  66 {
  67         int rec_id;
  68         struct gen_class * class;
  69
  70         bool wide;
  71         char prefix;
  72         char postfix;
  73         char * desc;
  74         int cell_size;
  75 };
  76
  77 struct gen_var_t
  78 {
  79         enum gen_storage storage;
  80         gen_type_t * type;
  81         int reg;
  82         int level;
  83
  84         char * name;
  85         char * full_name;
  86         gen_proc_t * p;
  87         struct gen_class * class;
  88 };
  89
  90 struct gen_context_t
  91 {
  92         gen_module_t * current_m;
  93 };
  94
  95 struct gen_module_t
  96 {
  97         struct gen_class * class;
  98         int rec_id;
  99 };
 100
 101 struct gen_label_t
 102 {
 103         int id;
 104 };