diff options
Diffstat (limited to 'gcc/ada/s-stausa.adb')
| -rw-r--r-- | gcc/ada/s-stausa.adb | 112 |
1 files changed, 64 insertions, 48 deletions
diff --git a/gcc/ada/s-stausa.adb b/gcc/ada/s-stausa.adb index 6eb8a0ca6ef..07668da318e 100644 --- a/gcc/ada/s-stausa.adb +++ b/gcc/ada/s-stausa.adb @@ -205,10 +205,10 @@ package body System.Stack_Usage is Result_Array := new Result_Array_Type (1 .. Buffer_Size); Result_Array.all := (others => - (Task_Name => (others => ASCII.NUL), - Measure => 0, - Max_Size => 0, - Overflow_Guard => 0)); + (Task_Name => (others => ASCII.NUL), + Min_Measure => 0, + Max_Measure => 0, + Max_Size => 0)); -- Set the Is_Enabled flag to true, so that the task wrapper knows that -- it has to handle dynamic stack analysis @@ -233,7 +233,7 @@ package body System.Stack_Usage is (Environment_Task_Analyzer, "ENVIRONMENT TASK", Stack_Size, - 0, + Stack_Size, System.Storage_Elements.To_Integer (Bottom_Of_Stack'Address)); Fill_Stack (Environment_Task_Analyzer); @@ -253,32 +253,49 @@ package body System.Stack_Usage is ---------------- procedure Fill_Stack (Analyzer : in out Stack_Analyzer) is - -- Change the local variables and parameters of this function with -- super-extra care. The more the stack frame size of this function is -- big, the more an "instrumentation threshold at writing" error is -- likely to happen. - Stack : aliased Stack_Slots (1 .. Analyzer.Size / Bytes_Per_Pattern); + Current_Stack_Level : aliased Integer; begin - Stack := (others => Analyzer.Pattern); + -- Reajust the pattern size. When we arrive in this function, there is + -- already a given amount of stack used, that we won't analyze. + + Analyzer.Stack_Used_When_Filling := + Stack_Size + (Analyzer.Bottom_Of_Stack, + To_Stack_Address (Current_Stack_Level'Address)) + + Natural (Current_Stack_Level'Size); + + Analyzer.Pattern_Size := + Analyzer.Pattern_Size - Analyzer.Stack_Used_When_Filling; + + declare + Stack : aliased Stack_Slots + (1 .. Analyzer.Pattern_Size / Bytes_Per_Pattern); + + begin + Stack := (others => Analyzer.Pattern); - Analyzer.Stack_Overlay_Address := Stack'Address; + Analyzer.Stack_Overlay_Address := Stack'Address; - Analyzer.Bottom_Pattern_Mark := - To_Stack_Address (Stack (Bottom_Slot_Index_In (Stack))'Address); - Analyzer.Top_Pattern_Mark := - To_Stack_Address (Stack (Top_Slot_Index_In (Stack))'Address); + Analyzer.Bottom_Pattern_Mark := + To_Stack_Address (Stack (Bottom_Slot_Index_In (Stack))'Address); + Analyzer.Top_Pattern_Mark := + To_Stack_Address (Stack (Top_Slot_Index_In (Stack))'Address); - -- If Arr has been packed, the following assertion must be true (we add - -- the size of the element whose address is: - -- Min (Analyzer.Inner_Pattern_Mark, Analyzer.Outer_Pattern_Mark)): + -- If Arr has been packed, the following assertion must be true (we + -- add the size of the element whose address is: + -- Min (Analyzer.Inner_Pattern_Mark, Analyzer.Outer_Pattern_Mark)): - pragma Assert - (Analyzer.Size = - Stack_Size - (Analyzer.Top_Pattern_Mark, Analyzer.Bottom_Pattern_Mark)); + pragma Assert + (Analyzer.Pattern_Size = + Stack_Size + (Analyzer.Top_Pattern_Mark, Analyzer.Bottom_Pattern_Mark)); + end; end Fill_Stack; ------------------------- @@ -286,25 +303,25 @@ package body System.Stack_Usage is ------------------------- procedure Initialize_Analyzer - (Analyzer : in out Stack_Analyzer; - Task_Name : String; - Size : Natural; - Overflow_Guard : Natural; - Bottom : Stack_Address; - Pattern : Unsigned_32 := 16#DEAD_BEEF#) + (Analyzer : in out Stack_Analyzer; + Task_Name : String; + Stack_Size : Natural; + Max_Pattern_Size : Natural; + Bottom : Stack_Address; + Pattern : Unsigned_32 := 16#DEAD_BEEF#) is begin -- Initialize the analyzer fields Analyzer.Bottom_Of_Stack := Bottom; - Analyzer.Size := Size; + Analyzer.Stack_Size := Stack_Size; + Analyzer.Pattern_Size := Max_Pattern_Size; Analyzer.Pattern := Pattern; Analyzer.Result_Id := Next_Id; Analyzer.Task_Name := (others => ' '); - -- Compute the task name, and truncate it if it's bigger than - -- Task_Name_Length + -- Compute the task name, and truncate if bigger than Task_Name_Length if Task_Name'Length <= Task_Name_Length then Analyzer.Task_Name (1 .. Task_Name'Length) := Task_Name; @@ -314,8 +331,6 @@ package body System.Stack_Usage is Task_Name'First + Task_Name_Length - 1); end if; - Analyzer.Overflow_Guard := Overflow_Guard; - Next_Id := Next_Id + 1; end Initialize_Analyzer; @@ -346,7 +361,7 @@ package body System.Stack_Usage is -- is, the more an "instrumentation threshold at reading" error is -- likely to happen. - Stack : Stack_Slots (1 .. Analyzer.Size / Bytes_Per_Pattern); + Stack : Stack_Slots (1 .. Analyzer.Pattern_Size / Bytes_Per_Pattern); for Stack'Address use Analyzer.Stack_Overlay_Address; begin @@ -382,10 +397,8 @@ package body System.Stack_Usage is --------------------- function Get_Usage_Range (Result : Task_Result) return String is - Min_Used_Str : constant String := - Natural'Image (Result.Measure); - Max_Used_Str : constant String := - Natural'Image (Result.Measure + Result.Overflow_Guard); + Min_Used_Str : constant String := Natural'Image (Result.Min_Measure); + Max_Used_Str : constant String := Natural'Image (Result.Max_Measure); begin return "[" & Min_Used_Str (2 .. Min_Used_Str'Last) & " -" & Max_Used_Str & "]"; @@ -458,8 +471,8 @@ package body System.Stack_Usage is for J in Result_Array'Range loop exit when J >= Next_Id; - if Result_Array (J).Measure - > Result_Array (Max_Actual_Use_Result_Id).Measure + if Result_Array (J).Max_Measure + > Result_Array (Max_Actual_Use_Result_Id).Max_Measure then Max_Actual_Use_Result_Id := J; end if; @@ -526,15 +539,18 @@ package body System.Stack_Usage is ------------------- procedure Report_Result (Analyzer : Stack_Analyzer) is - Result : constant Task_Result := - (Task_Name => Analyzer.Task_Name, - Max_Size => Analyzer.Size + Analyzer.Overflow_Guard, - Measure => Stack_Size - (Analyzer.Topmost_Touched_Mark, - Analyzer.Bottom_Of_Stack), - Overflow_Guard => Analyzer.Overflow_Guard - - Natural (Analyzer.Bottom_Of_Stack - - Analyzer.Bottom_Pattern_Mark)); + Measure : constant Natural := + Stack_Size + (Analyzer.Topmost_Touched_Mark, + Analyzer.Bottom_Of_Stack) + + Analyzer.Stack_Used_When_Filling; + + Result : constant Task_Result := + (Task_Name => Analyzer.Task_Name, + Max_Size => Analyzer.Stack_Size, + Min_Measure => Measure, + Max_Measure => Measure + Analyzer.Stack_Size + - Analyzer.Pattern_Size); begin if Analyzer.Result_Id in Result_Array'Range then @@ -550,7 +566,7 @@ package body System.Stack_Usage is Result_Str_Len : constant Natural := Get_Usage_Range (Result)'Length; Size_Str_Len : constant Natural := - Natural'Image (Analyzer.Size)'Length; + Natural'Image (Analyzer.Stack_Size)'Length; Max_Stack_Size_Len : Natural; Max_Actual_Use_Len : Natural; |