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(word)
  43 {
  44         PRIMITIVE_GETVM()->primitive_word();
  45 }
  46
  47 /* word-xt ( word -- start end ) */
  48 inline void factor_vm::primitive_word_xt()
  49 {
  50         word *w = untag_check<word>(dpop());
  51         code_block *code = (profiling_p ? w->profiling : w->code);
  52         dpush(allot_cell((cell)code->xt()));
  53         dpush(allot_cell((cell)code + code->size));
  54 }
  55
  56 PRIMITIVE(word_xt)
  57 {
  58         PRIMITIVE_GETVM()->primitive_word_xt();
  59 }
  60
  61 /* Allocates memory */
  62 void factor_vm::update_word_xt(cell w_)
  63 {
  64         gc_root<word> w(w_,this);
  65
  66         if(profiling_p)
  67         {
  68                 if(!w->profiling)
  69                 {
  70                         /* Note: can't do w->profiling = ... since if LHS
  71                         evaluates before RHS, since in that case if RHS does a
  72                         GC, we will have an invalid pointer on the LHS */
  73                         code_block *profiling = compile_profiling_stub(w.value());
  74                         w->profiling = profiling;
  75                 }
  76
  77                 w->xt = w->profiling->xt();
  78         }
  79         else
  80                 w->xt = w->code->xt();
  81 }
  82
  83 inline void factor_vm::primitive_optimized_p()
  84 {
  85         drepl(tag_boolean(word_optimized_p(untag_check<word>(dpeek()))));
  86 }
  87
  88 PRIMITIVE(optimized_p)
  89 {
  90         PRIMITIVE_GETVM()->primitive_optimized_p();
  91 }
  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(wrapper)
 101 {
 102         PRIMITIVE_GETVM()->primitive_wrapper();
 103 }
 104
 105 }