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         const char * dir;
  27 };
  28
  29 enum gen_storage
  30 {
  31         JVM_STORAGE_UNKNOWN,
  32         /* Обыкновенные Java-переменные */
  33         JVM_STORAGE_REGISTER,
  34         JVM_STORAGE_STATIC,
  35         JVM_STORAGE_FIELD,
  36         JVM_STORAGE_PARAM,
  37         /* Переменные на которые можно делать указатели без кеширования */
  38         JVM_STORAGE_REGISTER_VAR,
  39         JVM_STORAGE_STATIC_VAR,
  40         JVM_STORAGE_FIELD_VAR,
  41         JVM_STORAGE_PARAM_VAR,
  42         JVM_STORAGE_PARAM_VARPTR,
  43         /* Локальные переменные доступные локальным функциям */
  44         JVM_STORAGE_FRAME,
  45         JVM_STORAGE_FRAME_VAR,
  46         JVM_STORAGE_FRAME_PARAM,
  47         JVM_STORAGE_FRAME_PARAM_VAR,
  48         JVM_STORAGE_FRAME_PARAM_VARPTR
  49 };
  50
  51
  52 struct gen_proc_t
  53 {
  54         char * full_name;
  55         int label_id;
  56         struct gen_register_file * rf;
  57         struct gen_stack * stack;
  58         struct gen_class * class;
  59
  60         int level;
  61         int max_frames;
  62         int * reg_frame;
  63         gen_var_t * frame_v;
  64 };
  65
  66 struct gen_type_t
  67 {
  68         int rec_id;
  69         struct gen_class * class;
  70
  71         bool wide;
  72         char prefix;
  73         char postfix;
  74         char * full_name;
  75         char * desc;
  76         int cell_size;
  77 };
  78
  79 struct gen_var_t
  80 {
  81         enum gen_storage storage;
  82         gen_type_t * type;
  83         int reg;
  84         int level;
  85
  86         bool typecheck;
  87         gen_type_t * forcetype;
  88
  89         char * name;
  90         char * full_name;
  91         gen_proc_t * p;
  92         struct gen_class * class;
  93 };
  94
  95 struct gen_context_t
  96 {
  97         gen_module_t * current_m;
  98         const char * dir;
  99 };
 100
 101 struct gen_module_t
 102 {
 103         struct gen_class * class;
 104         int rec_id;
 105 };
 106
 107 struct gen_label_t
 108 {
 109         int id;
 110 };