vm/entry_points.cpp

   1 #include "master.hpp"
   2
   3 namespace factor
   4 {
   5
   6 void factor_vm::c_to_factor(cell quot)
   7 {
   8         /* First time this is called, wrap the c-to-factor sub-primitive inside
   9         of a callback stub, which saves and restores non-volatile registers
  10         per platform ABI conventions, so that the Factor compiler can treat
  11         all registers as volatile */
  12         if(!c_to_factor_func)
  13         {
  14                 tagged<word> c_to_factor_word(special_objects[C_TO_FACTOR_WORD]);
  15                 code_block *c_to_factor_block = callbacks->add(c_to_factor_word.value(),0);
  16                 void* func = c_to_factor_block->entry_point();
  17                 CODE_TO_FUNCTION_POINTER_CALLBACK(this, func);
  18                 c_to_factor_func = (c_to_factor_func_type)func;
  19         }
  20         c_to_factor_func(quot);
  21 }
  22
  23 template<typename Func> Func factor_vm::get_entry_point(cell n)
  24 {
  25         tagged<word> entry_point_word(special_objects[n]);
  26         return (Func)entry_point_word->entry_point;
  27 }
  28
  29 void factor_vm::unwind_native_frames(cell quot, stack_frame *to)
  30 {
  31         tagged<word> entry_point_word(special_objects[UNWIND_NATIVE_FRAMES_WORD]);
  32         void *func = entry_point_word->entry_point;
  33         CODE_TO_FUNCTION_POINTER(func);
  34         ((unwind_native_frames_func_type)func)(quot,to);
  35 }
  36
  37 cell factor_vm::get_fpu_state()
  38 {
  39         tagged<word> entry_point_word(special_objects[GET_FPU_STATE_WORD]);
  40         void *func = entry_point_word->entry_point;
  41         CODE_TO_FUNCTION_POINTER(func);
  42         return ((get_fpu_state_func_type)func)();
  43 }
  44
  45 void factor_vm::set_fpu_state(cell state)
  46 {
  47         tagged<word> entry_point_word(special_objects[SET_FPU_STATE_WORD]);
  48         void *func = entry_point_word->entry_point;
  49         CODE_TO_FUNCTION_POINTER(func);
  50         ((set_fpu_state_func_type)func)(state);
  51 }
  52
  53 }