vm/words.cpp

   1 #include "master.hpp"
   2
   3 namespace factor
   4 {
   5
   6 word *factor_vm::allot_word(cell vocab_, cell name_)
   7 {
   8         gc_root<object> vocab(vocab_,this);
   9         gc_root<object> name(name_,this);
  10
  11         gc_root<word> new_word(allot<word>(sizeof(word)),this);
  12
  13         new_word->hashcode = tag_fixnum((rand() << 16) ^ rand());
  14         new_word->vocabulary = vocab.value();
  15         new_word->name = name.value();
  16         new_word->def = userenv[UNDEFINED_ENV];
  17         new_word->props = F;
  18         new_word->counter = tag_fixnum(0);
  19         new_word->pic_def = F;
  20         new_word->pic_tail_def = F;
  21         new_word->subprimitive = F;
  22         new_word->profiling = NULL;
  23         new_word->code = NULL;
  24
  25         jit_compile_word(new_word.value(),new_word->def,true);
  26         update_word_xt(new_word.value());
  27
  28         if(profiling_p)
  29                 relocate_code_block(new_word->profiling);
  30
  31         return new_word.untagged();
  32 }
  33
  34 /* <word> ( name vocabulary -- word ) */
  35 inline void factor_vm::primitive_word()
  36 {
  37         cell vocab = dpop();
  38         cell name = dpop();
  39         dpush(tag<word>(allot_word(vocab,name)));
  40 }
  41
  42 PRIMITIVE_FORWARD(word)
  43
  44 /* word-xt ( word -- start end ) */
  45 inline void factor_vm::primitive_word_xt()
  46 {
  47         gc_root<word> w(dpop(),this);
  48         w.untag_check(this);
  49
  50         if(profiling_p)
  51         {
  52                 dpush(allot_cell((cell)w->profiling->xt()));
  53                 dpush(allot_cell((cell)w->profiling + w->profiling->size));
  54         }
  55         else
  56         {
  57                 dpush(allot_cell((cell)w->code->xt()));
  58                 dpush(allot_cell((cell)w->code + w->code->size));
  59         }
  60 }
  61
  62 PRIMITIVE_FORWARD(word_xt)
  63
  64 /* Allocates memory */
  65 void factor_vm::update_word_xt(cell w_)
  66 {
  67         gc_root<word> w(w_,this);
  68
  69         if(profiling_p)
  70         {
  71                 if(!w->profiling)
  72                 {
  73                         /* Note: can't do w->profiling = ... since if LHS
  74                         evaluates before RHS, since in that case if RHS does a
  75                         GC, we will have an invalid pointer on the LHS */
  76                         code_block *profiling = compile_profiling_stub(w.value());
  77                         w->profiling = profiling;
  78                 }
  79
  80                 w->xt = w->profiling->xt();
  81         }
  82         else
  83                 w->xt = w->code->xt();
  84 }
  85
  86 inline void factor_vm::primitive_optimized_p()
  87 {
  88         drepl(tag_boolean(word_optimized_p(untag_check<word>(dpeek()))));
  89 }
  90
  91 PRIMITIVE_FORWARD(optimized_p)
  92
  93 inline void factor_vm::primitive_wrapper()
  94 {
  95         wrapper *new_wrapper = allot<wrapper>(sizeof(wrapper));
  96         new_wrapper->object = dpeek();
  97         drepl(tag<wrapper>(new_wrapper));
  98 }
  99
 100 PRIMITIVE_FORWARD(wrapper)
 101
 102 }