Revision a3f5054b tcg/README

b/tcg/README
75 75 
* Helpers:
76 76 

  		





  77
  77
  
    
Using the tcg_gen_helper_x_y it is possible to call any function


  		





  78
  
  
    
taking i32, i64 or pointer types. Before calling an helper, all


  		





  79
  
  
    
globals are stored at their canonical location and it is assumed that


  		





  80
  
  
    
the function can modify them. In the future, function modifiers will


  		





  81
  
  
    
be allowed to tell that the helper does not read or write some globals.


  		





  
  78
  
    
taking i32, i64 or pointer types. By default, before calling an helper,


  		





  
  79
  
    
all globals are stored at their canonical location and it is assumed


  		





  
  80
  
    
that the function can modify them. This can be overriden by the


  		





  
  81
  
    
TCG_CALL_CONST function modifier. By default, the helper is allowed to


  		





  
  82
  
    
modify the CPU state or raise an exception. This can be overriden by


  		





  
  83
  
    
the TCG_CALL_PURE function modifier, in which case the call to the


  		





  
  84
  
    
function is removed if the return value is not used.


  		





  82
  85
  
    

  		





  83
  86
  
    
On some TCG targets (e.g. x86), several calling conventions are


  		





  84
  87
  
    
supported.


  		












Also available in:
  Unified diff