diff options
| -rw-r--r-- | src/vhdl/translate/trans-chap7.adb | 81 |
1 files changed, 70 insertions, 11 deletions
diff --git a/src/vhdl/translate/trans-chap7.adb b/src/vhdl/translate/trans-chap7.adb index 0f4200b29..f7ea2cdf7 100644 --- a/src/vhdl/translate/trans-chap7.adb +++ b/src/vhdl/translate/trans-chap7.adb @@ -5820,9 +5820,9 @@ package body Trans.Chap7 is Gen_Exit_When (Label, New_Compare_Op (ON_Eq, - New_Obj_Value (Var_It), - New_Obj_Value (Var_Max), - Ghdl_Bool_Type)); + New_Obj_Value (Var_It), + New_Obj_Value (Var_Max), + Ghdl_Bool_Type)); Translate_Rw (Chap3.Index_Base (Val, Val_Type, New_Obj_Value (Var_It)), Get_Element_Subtype (Val_Type), Proc); @@ -5945,22 +5945,81 @@ package body Trans.Chap7 is when Iir_Predefined_Read_Length => declare + El_Type : constant Iir := Get_Element_Subtype (Etype); + El_Tinfo : constant Type_Info_Acc := Get_Info (El_Type); Var_Len : O_Dnode; + Var_Max : O_Dnode; + Var_It : O_Dnode; + Label : O_Snode; + If_Blk : O_If_Block; + Targ : O_Dnode; + Dummy : Mnode; begin Open_Temp; + Var_Max := Create_Temp (Ghdl_Index_Type); + New_Assign_Stmt (New_Obj (Var_Max), + Chap3.Get_Array_Length (Var, Etype)); + -- TODO: complex element type. + pragma Assert (Is_Static_Type (El_Tinfo)); + Dummy := Create_Temp (El_Tinfo); + Targ := Create_Temp (El_Tinfo.Ortho_Ptr_Type (Mode_Value)); + + -- Read length. Var_Len := Create_Temp (Ghdl_Index_Type); Translate_Rw_Length (Var_Len, Ghdl_Read_Scalar); - Chap6.Check_Bound_Error - (New_Compare_Op (ON_Gt, + -- LRM08 5.5.2 File Operations + -- If the object associated with formal parameter VALUE is + -- shorter than this length, then only that portion of the + -- array value read by the operation that can be contained in + -- the object is returned by the READ operation, and the rest + -- of the value is lost. If the object associated with formal + -- parameter VALUE is longer than this length, then the entire + -- value is returned and remaining elements of the object are + -- unaffected. + + -- Iterate on length. + Var_It := Create_Temp (Ghdl_Index_Type); + Init_Var (Var_It); + Start_Loop_Stmt (Label); + Gen_Exit_When + (Label, + New_Compare_Op (ON_Eq, + New_Obj_Value (Var_It), New_Obj_Value (Var_Len), - Chap3.Get_Array_Length (Var, Etype), - Ghdl_Bool_Type), - Subprg); - Translate_Rw_Array (Chap3.Get_Composite_Base (Var), Etype, - Var_Len, Ghdl_Read_Scalar); - New_Return_Stmt (New_Convert_Ov (New_Obj_Value (Var_Len), + Ghdl_Bool_Type)); + Start_If_Stmt + (If_Blk, New_Compare_Op (ON_Gt, + New_Obj_Value (Var_It), + New_Obj_Value (Var_Max), + Ghdl_Bool_Type)); + New_Assign_Stmt (New_Obj (Targ), M2Addr (Dummy)); + New_Else_Stmt (If_Blk); + New_Assign_Stmt + (New_Obj (Targ), + M2Addr (Chap3.Index_Base (Chap3.Get_Composite_Base (Var), + Etype, + New_Obj_Value (Var_It)))); + Finish_If_Stmt (If_Blk); + + Translate_Rw (Dp2M (Targ, El_Tinfo, Mode_Value), + El_Type, Ghdl_Read_Scalar); + Inc_Var (Var_It); + Finish_Loop_Stmt (Label); + + -- Return the length (the minimum of len, max) + Start_If_Stmt + (If_Blk, New_Compare_Op (ON_Gt, + New_Obj_Value (Var_Len), + New_Obj_Value (Var_Max), + Ghdl_Bool_Type)); + New_Assign_Stmt (New_Obj (Var_It), New_Obj_Value (Var_Max)); + New_Else_Stmt (If_Blk); + New_Assign_Stmt (New_Obj (Var_It), New_Obj_Value (Var_Len)); + Finish_If_Stmt (If_Blk); + New_Return_Stmt (New_Convert_Ov (New_Obj_Value (Var_It), Std_Integer_Otype)); + Close_Temp; end; when others => |