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|
-- Debugging during synthesis.
-- Copyright (C) 2019 Tristan Gingold
--
-- This file is part of GHDL.
--
-- This program is free software: you can redistribute it and/or modify
-- it under the terms of the GNU General Public License as published by
-- the Free Software Foundation, either version 2 of the License, or
-- (at your option) any later version.
--
-- This program is distributed in the hope that it will be useful,
-- but WITHOUT ANY WARRANTY; without even the implied warranty of
-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-- GNU General Public License for more details.
--
-- You should have received a copy of the GNU General Public License
-- along with this program. If not, see <gnu.org/licenses>.
with Files_Map;
with Tables;
with Simple_IO; use Simple_IO;
with Name_Table;
with Str_Table;
with Grt.Types; use Grt.Types;
with Grt.Readline;
with Vhdl.Errors;
with Vhdl.Nodes_Walk; use Vhdl.Nodes_Walk;
with Vhdl.Parse;
with Elab.Vhdl_Context.Debug; use Elab.Vhdl_Context.Debug;
with Elab.Vhdl_Debug; use Elab.Vhdl_Debug;
package body Elab.Debugger is
Current_Instance : Synth_Instance_Acc;
Current_Loc : Node;
type Debug_Reason is
(
Reason_Init,
Reason_Break,
Reason_Time,
Reason_Error
);
function Debug_Current_Instance return Synth_Instance_Acc is
begin
return Current_Instance;
end Debug_Current_Instance;
package Breakpoints is new Tables
(Table_Index_Type => Natural,
Table_Component_Type => Node,
Table_Low_Bound => 1,
Table_Initial => 16);
function Is_Breakpoint_Hit return Boolean is
begin
for I in Breakpoints.First .. Breakpoints.Last loop
if Breakpoints.Table (I) = Current_Loc then
return True;
end if;
end loop;
return False;
end Is_Breakpoint_Hit;
-- Current execution state, or reason to stop execution (set by the
-- last debugger command).
type Exec_State_Type is
(-- Execution should continue until a breakpoint is reached or assertion
-- failure.
Exec_Run,
-- Execution will stop at the next statement.
Exec_Single_Step,
-- Execution will stop at the next simple statement in the same frame.
Exec_Next,
-- Execution will stop at the next statement in the same frame. In
-- case of compound statement, stop after the compound statement.
Exec_Next_Stmt);
Exec_State : Exec_State_Type := Exec_Run;
-- Current frame for next.
Exec_Instance : Synth_Instance_Acc;
-- Current statement for next_stmt.
Exec_Statement : Node;
function Is_Within_Statement (Stmt : Node; Cur : Node) return Boolean
is
Parent : Node;
begin
Parent := Cur;
loop
if Parent = Stmt then
return True;
end if;
case Get_Kind (Parent) is
when Iir_Kinds_Sequential_Statement =>
Parent := Get_Parent (Parent);
when others =>
return False;
end case;
end loop;
end Is_Within_Statement;
Prompt_Debug : constant String := "debug> " & ASCII.NUL;
Prompt_Error : constant String := "error> " & ASCII.NUL;
Prompt_Init : constant String := "init> " & ASCII.NUL;
-- Prompt_Elab : constant String := "elab> " & ASCII.NUL;
procedure Disp_Iir_Location (N : Node) is
begin
if N = Null_Iir then
Put_Err ("??:??:??");
else
Put_Err (Vhdl.Errors.Disp_Location (N));
end if;
Put_Err (": ");
end Disp_Iir_Location;
-- For the list command: current file and current line.
List_Current_File : Source_File_Entry := No_Source_File_Entry;
List_Current_Line : Natural := 0;
List_Current_Line_Pos : Source_Ptr := 0;
-- Set List_Current_* from a location. To be called after program break
-- to indicate current location.
procedure Set_List_Current (Loc : Location_Type)
is
Offset : Natural;
begin
Files_Map.Location_To_Coord
(Loc, List_Current_File, List_Current_Line_Pos,
List_Current_Line, Offset);
end Set_List_Current;
procedure Disp_Current_Lines
is
use Files_Map;
-- Number of lines to display before and after the current line.
Radius : constant := 5;
Buf : File_Buffer_Acc;
Pos : Source_Ptr;
Line : Natural;
Len : Source_Ptr;
C : Character;
begin
if List_Current_Line > Radius then
Line := List_Current_Line - Radius;
else
Line := 1;
end if;
Pos := File_Line_To_Position (List_Current_File, Line);
Buf := Get_File_Source (List_Current_File);
while Line < List_Current_Line + Radius loop
-- Compute line length.
Len := 0;
loop
C := Buf (Pos + Len);
exit when C = ASCII.CR or C = ASCII.LF or C = ASCII.EOT;
Len := Len + 1;
end loop;
-- Disp line number.
declare
Str : constant String := Natural'Image (Line);
begin
if Line = List_Current_Line then
Put ('*');
else
Put (' ');
end if;
Put ((Str'Length .. 5 => ' '));
Put (Str (Str'First + 1 .. Str'Last));
Put (' ');
end;
-- Disp line.
Put_Line (String (Buf (Pos .. Pos + Len - 1)));
-- Skip EOL.
exit when C = ASCII.EOT;
Pos := Pos + Len + 1;
if C = ASCII.CR then
if Buf (Pos) = ASCII.LF then
Pos := Pos + 1;
end if;
else
pragma Assert (C = ASCII.LF);
if Buf (Pos) = ASCII.CR then
Pos := Pos + 1;
end if;
end if;
Line := Line + 1;
end loop;
end Disp_Current_Lines;
procedure Disp_Source_Line (Loc : Location_Type)
is
use Files_Map;
File : Source_File_Entry;
Line_Pos : Source_Ptr;
Line : Natural;
Offset : Natural;
Buf : File_Buffer_Acc;
Next_Line_Pos : Source_Ptr;
begin
Location_To_Coord (Loc, File, Line_Pos, Line, Offset);
Buf := Get_File_Source (File);
Next_Line_Pos := File_Line_To_Position (File, Line + 1);
Put (String (Buf (Line_Pos .. Next_Line_Pos - 1)));
end Disp_Source_Line;
-- The status of the debugger. This status can be modified by a command
-- as a side effect to resume or quit the debugger.
type Command_Status_Type is (Status_Default, Status_Quit);
Command_Status : Command_Status_Type;
-- This exception can be raised by a debugger command to directly return
-- to the prompt.
Command_Error : exception;
-- If set (by commands), call this procedure on empty line to repeat
-- last command.
Cmd_Repeat : Menu_Procedure;
type Menu_Kind is (Menu_Command, Menu_Submenu);
type Menu_Entry (Kind : Menu_Kind);
type Menu_Entry_Acc is access all Menu_Entry;
type Menu_Entry (Kind : Menu_Kind) is record
Name : Cst_String_Acc;
Help : Cst_String_Acc;
Next : Menu_Entry_Acc;
case Kind is
when Menu_Command =>
Proc : Menu_Procedure;
when Menu_Submenu =>
First : Menu_Entry_Acc := null;
end case;
end record;
function Is_Blank (C : Character) return Boolean is
begin
return C = ' ' or else C = ASCII.HT;
end Is_Blank;
function Skip_Blanks (S : String) return Positive
is
P : Positive := S'First;
begin
while P <= S'Last and then Is_Blank (S (P)) loop
P := P + 1;
end loop;
return P;
end Skip_Blanks;
function Skip_Blanks (S : String; F : Positive) return Positive is
begin
return Skip_Blanks (S (F .. S'Last));
end Skip_Blanks;
-- Return the position of the last character of the word (the last
-- non-blank character).
function Get_Word (S : String) return Positive
is
P : Positive := S'First;
begin
while P <= S'Last and then not Is_Blank (S (P)) loop
P := P + 1;
end loop;
return P - 1;
end Get_Word;
function Get_Word (S : String; F : Positive) return Positive is
begin
return Get_Word (S (F .. S'Last));
end Get_Word;
procedure To_Num (Str : String; Res : out Uns32; Valid : out Boolean) is
begin
Res := 0;
Valid := True;
for P in Str'Range loop
if Str (P) in '0' .. '9' then
Res := Res * 10 + Character'Pos (Str (P)) - Character'Pos ('0');
else
Valid := False;
return;
end if;
end loop;
end To_Num;
procedure Info_Params_Proc (Line : String)
is
pragma Unreferenced (Line);
Decl : Iir;
Params : Iir;
begin
Decl := Get_Source_Scope (Current_Instance);
loop
case Get_Kind (Decl) is
when Iir_Kind_Procedure_Body
| Iir_Kind_Function_Body =>
Decl := Get_Subprogram_Specification (Decl);
exit;
when Iir_Kind_Process_Statement
| Iir_Kind_Sensitized_Process_Statement =>
Put_Line ("processes have no parameters");
return;
when Iir_Kind_While_Loop_Statement
| Iir_Kind_If_Statement
| Iir_Kind_For_Loop_Statement
| Iir_Kind_Case_Statement =>
Decl := Get_Parent (Decl);
when others =>
Vhdl.Errors.Error_Kind ("info_params_proc", Decl);
end case;
end loop;
Params := Get_Interface_Declaration_Chain (Decl);
Disp_Declaration_Objects (Current_Instance, Params);
end Info_Params_Proc;
procedure Info_Locals_Proc (Line : String)
is
pragma Unreferenced (Line);
Decl : Iir;
Decls : Iir;
begin
-- From statement to declaration.
Decl := Get_Source_Scope (Current_Instance);
loop
case Get_Kind (Decl) is
when Iir_Kind_Procedure_Body
| Iir_Kind_Function_Body
| Iir_Kind_Process_Statement
| Iir_Kind_Sensitized_Process_Statement
| Iir_Kind_Generate_Statement_Body =>
Decls := Get_Declaration_Chain (Decl);
exit;
when Iir_Kind_While_Loop_Statement
| Iir_Kind_If_Statement
| Iir_Kind_For_Loop_Statement
| Iir_Kind_Case_Statement =>
Decl := Get_Parent (Decl);
when others =>
Vhdl.Errors.Error_Kind ("info_params_proc", Decl);
end case;
end loop;
Disp_Declaration_Objects (Current_Instance, Decls);
end Info_Locals_Proc;
procedure Info_Instance_Proc (Line : String)
is
pragma Unreferenced (Line);
begin
Debug_Synth_Instance (Current_Instance);
end Info_Instance_Proc;
-- Next statement in the same frame, but handle compound statements as
-- one statement.
procedure Next_Stmt_Proc (Line : String)
is
pragma Unreferenced (Line);
begin
Exec_State := Exec_Next_Stmt;
Exec_Instance := Current_Instance;
Exec_Statement := Current_Loc;
Flag_Need_Debug := True;
Command_Status := Status_Quit;
end Next_Stmt_Proc;
-- Finish parent statement.
procedure Finish_Stmt_Proc (Line : String)
is
pragma Unreferenced (Line);
begin
Exec_State := Exec_Next_Stmt;
Exec_Instance := Current_Instance;
Exec_Statement := Get_Parent (Current_Loc);
Flag_Need_Debug := True;
Command_Status := Status_Quit;
end Finish_Stmt_Proc;
procedure Next_Proc (Line : String)
is
pragma Unreferenced (Line);
begin
Exec_State := Exec_Next;
Exec_Instance := Current_Instance;
Flag_Need_Debug := True;
Command_Status := Status_Quit;
Cmd_Repeat := Next_Proc'Access;
end Next_Proc;
procedure Step_Proc (Line : String)
is
pragma Unreferenced (Line);
begin
Exec_State := Exec_Single_Step;
Flag_Need_Debug := True;
Command_Status := Status_Quit;
Cmd_Repeat := Step_Proc'Access;
end Step_Proc;
Break_Id : Name_Id;
procedure Set_Breakpoint (Stmt : Iir) is
begin
Put_Line ("set breakpoint at: " & Files_Map.Image (Get_Location (Stmt)));
Breakpoints.Append (Stmt);
Flag_Need_Debug := True;
end Set_Breakpoint;
function Cb_Set_Break (El : Iir) return Walk_Status is
begin
case Get_Kind (El) is
when Iir_Kind_Function_Declaration
| Iir_Kind_Procedure_Declaration =>
if Get_Identifier (El) = Break_Id
and then
Get_Implicit_Definition (El) not in Iir_Predefined_Implicit
then
Set_Breakpoint
(Get_Sequential_Statement_Chain (Get_Subprogram_Body (El)));
end if;
when others =>
null;
end case;
return Walk_Continue;
end Cb_Set_Break;
procedure Break_Proc (Line : String)
is
Status : Walk_Status;
P : Natural;
begin
P := Skip_Blanks (Line);
if Line (P) = '"' then
-- An operator name.
declare
use Str_Table;
Str : String8_Id;
Len : Nat32;
begin
Str := Create_String8;
Len := 0;
P := P + 1;
while Line (P) /= '"' loop
Append_String8_Char (Line (P));
Len := Len + 1;
P := P + 1;
end loop;
Break_Id := Vhdl.Parse.Str_To_Operator_Name
(Str, Len, No_Location);
-- FIXME: free string.
-- FIXME: catch error.
end;
else
Break_Id := Name_Table.Get_Identifier (Line (P .. Line'Last));
end if;
Status := Walk_Declarations (Cb_Set_Break'Access);
pragma Assert (Status = Walk_Continue);
end Break_Proc;
procedure Help_Proc (Line : String);
procedure Prepare_Continue is
begin
Command_Status := Status_Quit;
-- Set Flag_Need_Debug only if there is at least one enabled breakpoint.
Flag_Need_Debug := False;
for I in Breakpoints.First .. Breakpoints.Last loop
Flag_Need_Debug := True;
exit;
end loop;
end Prepare_Continue;
procedure Cont_Proc (Line : String) is
pragma Unreferenced (Line);
begin
Prepare_Continue;
end Cont_Proc;
procedure List_Proc (Line : String)
is
pragma Unreferenced (Line);
begin
Disp_Current_Lines;
end List_Proc;
procedure List_Hierarchy (Line : String)
is
With_Objs : Boolean;
Recurse : Boolean;
F, L : Natural;
begin
With_Objs := False;
Recurse := False;
F := Line'First;
loop
F := Skip_Blanks (Line, F);
exit when F > Line'Last;
L := Get_Word (Line, F);
if Line (F .. L) = "-v" then
With_Objs := True;
elsif Line (F .. L) = "-R" then
Recurse := True;
else
Put_Line ("unknown option: " & Line (F .. L));
return;
end if;
F := L + 1;
end loop;
Disp_Hierarchy (Current_Instance, Recurse, With_Objs);
end List_Hierarchy;
procedure Change_Hierarchy (Line : String)
is
F : Natural;
Res : Synth_Instance_Acc;
begin
F := Skip_Blanks (Line);
if Line (F .. Line'Last) = ".." then
Res := Get_Instance_Path_Parent (Current_Instance);
if Res = null then
Put_Line ("already at top");
return;
end if;
else
Res := Get_Sub_Instance_By_Name (Current_Instance,
Line (F .. Line'Last));
if Res = null then
Put_Line ("no such sub-instance");
return;
end if;
end if;
Current_Instance := Res;
end Change_Hierarchy;
procedure Print_Hierarchy_Path (Line : String)
is
pragma Unreferenced (Line);
begin
Disp_Instance_Path (Current_Instance);
New_Line;
end Print_Hierarchy_Path;
Menu_Info_Instance : aliased Menu_Entry :=
(Kind => Menu_Command,
Name => new String'("inst*ance"),
Help => new String'("display instance info"),
Next => null, -- Menu_Info_Tree'Access,
Proc => Info_Instance_Proc'Access);
Menu_Info_Locals : aliased Menu_Entry :=
(Kind => Menu_Command,
Name => new String'("locals"),
Help => new String'("display local objects"),
Next => Menu_Info_Instance'Access,
Proc => Info_Locals_Proc'Access);
Menu_Info_Params : aliased Menu_Entry :=
(Kind => Menu_Command,
Name => new String'("param*eters"),
Help => new String'("display parameters"),
Next => Menu_Info_Locals'Access, -- Menu_Info_Tree'Access,
Proc => Info_Params_Proc'Access);
Menu_Info : aliased Menu_Entry :=
(Kind => Menu_Submenu,
Name => new String'("i*nfo"),
Help => null,
Next => null, -- Menu_Ps'Access,
First => Menu_Info_Params'Access); -- Menu_Info_Proc'Access);
Menu_Pwh : aliased Menu_Entry :=
(Kind => Menu_Command,
Name => new String'("pwh"),
Help => new String'("display current hierarchy path"),
Next => Menu_Info'Access,
Proc => Print_Hierarchy_Path'Access);
Menu_Ch : aliased Menu_Entry :=
(Kind => Menu_Command,
Name => new String'("ch"),
Help => new String'("change hierarchy path"),
Next => Menu_Pwh'Access,
Proc => Change_Hierarchy'Access);
Menu_Lh : aliased Menu_Entry :=
(Kind => Menu_Command,
Name => new String'("lh"),
Help => new String'("list hierarchy"),
Next => Menu_Ch'Access,
Proc => List_Hierarchy'Access);
Menu_List : aliased Menu_Entry :=
(Kind => Menu_Command,
Name => new String'("l*list"),
Help => new String'("list source around current line"),
Next => Menu_Lh'Access,
Proc => List_Proc'Access);
Menu_Cont : aliased Menu_Entry :=
(Kind => Menu_Command,
Name => new String'("c*ont"),
Help => new String'("continue simulation"),
Next => Menu_List'Access, --Menu_Print'Access,
Proc => Cont_Proc'Access);
Menu_Nstmt : aliased Menu_Entry :=
(Kind => Menu_Command,
Name => new String'("ns*tmt"),
Help => new String'("execute statement (next statement)"),
Next => Menu_Cont'Access, -- Menu_Up'Access,
Proc => Next_Stmt_Proc'Access);
Menu_Fstmt : aliased Menu_Entry :=
(Kind => Menu_Command,
Name => new String'("fs*tmt"),
Help => new String'("execute until end of subprogram"),
Next => Menu_Nstmt'Access,
Proc => Finish_Stmt_Proc'Access);
Menu_Next : aliased Menu_Entry :=
(Kind => Menu_Command,
Name => new String'("n*ext"),
Help => new String'("execute to next statement"),
Next => Menu_Fstmt'Access,
Proc => Next_Proc'Access);
Menu_Step : aliased Menu_Entry :=
(Kind => Menu_Command,
Name => new String'("s*tep"),
Help => new String'("execute one statement"),
Next => Menu_Next'Access,
Proc => Step_Proc'Access);
Menu_Break : aliased Menu_Entry :=
(Kind => Menu_Command,
Name => new String'("b*reak"),
Help => new String'("set a breakpoint (or list then)"),
Next => Menu_Step'Access,
Proc => Break_Proc'Access);
Menu_Help2 : aliased Menu_Entry :=
(Kind => Menu_Command,
Name => new String'("?"),
Help => new String'("print help"),
Next => Menu_Break'Access,
Proc => Help_Proc'Access);
Menu_Top : aliased Menu_Entry :=
(Kind => Menu_Submenu,
Help => null,
Name => null,
Next => null,
First => Menu_Help2'Access);
-- Append command to MENU.
procedure Append_Menu (Menu : Menu_Entry;
Name : Cst_String_Acc;
Help : Cst_String_Acc;
Proc : Menu_Procedure)
is
M, L : Menu_Entry_Acc;
begin
M := new Menu_Entry'(Kind => Menu_Command,
Name => Name,
Help => Help,
Next => null,
Proc => Proc);
L := Menu.First;
while L.Next /= null loop
L := L.Next;
end loop;
L.Next := M;
end Append_Menu;
procedure Append_Menu_Command (Name : Cst_String_Acc;
Help : Cst_String_Acc;
Proc : Menu_Procedure) is
begin
Append_Menu (Menu_Top, Name, Help, Proc);
end Append_Menu_Command;
procedure Append_Info_Command (Name : Cst_String_Acc;
Help : Cst_String_Acc;
Proc : Menu_Procedure) is
begin
Append_Menu (Menu_Info, Name, Help, Proc);
end Append_Info_Command;
function Find_Menu (Menu : Menu_Entry_Acc; Cmd : String)
return Menu_Entry_Acc
is
function Is_Cmd (Cmd_Name : String; Str : String) return Boolean
is
-- Number of characters that were compared.
P : Natural;
begin
P := 0;
-- Prefix (before the '*').
loop
if P = Cmd_Name'Length then
-- Full match.
return P = Str'Length;
end if;
exit when Cmd_Name (Cmd_Name'First + P) = '*';
if P = Str'Length then
-- Command is too short
return False;
end if;
if Cmd_Name (Cmd_Name'First + P) /= Str (Str'First + P) then
return False;
end if;
P := P + 1;
end loop;
-- Suffix (after the '*')
loop
if P = Str'Length then
return True;
end if;
if P + 1 = Cmd_Name'Length then
-- String is too long
return False;
end if;
if Cmd_Name (Cmd_Name'First + P + 1) /= Str (Str'First + P) then
return False;
end if;
P := P + 1;
end loop;
end Is_Cmd;
Ent : Menu_Entry_Acc;
begin
Ent := Menu.First;
while Ent /= null loop
if Is_Cmd (Ent.Name.all, Cmd) then
return Ent;
end if;
Ent := Ent.Next;
end loop;
return null;
end Find_Menu;
procedure Parse_Command (Line : String;
P : in out Natural;
Menu : out Menu_Entry_Acc)
is
E : Natural;
begin
P := Skip_Blanks (Line (P .. Line'Last));
if P > Line'Last then
return;
end if;
E := Get_Word (Line (P .. Line'Last));
Menu := Find_Menu (Menu, Line (P .. E));
if Menu = null then
Put_Line ("command '" & Line (P .. E) & "' not found");
end if;
P := E + 1;
end Parse_Command;
procedure Help_Proc (Line : String)
is
P : Natural;
Root : Menu_Entry_Acc := Menu_Top'access;
begin
Put_Line ("This is the help command");
P := Line'First;
while P < Line'Last loop
Parse_Command (Line, P, Root);
if Root = null then
return;
elsif Root.Kind /= Menu_Submenu then
Put_Line ("Menu entry " & Root.Name.all & " is not a submenu");
return;
end if;
end loop;
Root := Root.First;
while Root /= null loop
Put (Root.Name.all);
if Root.Kind = Menu_Submenu then
Put (" (menu)");
end if;
New_Line;
Root := Root.Next;
end loop;
end Help_Proc;
procedure Debug (Reason: Debug_Reason)
is
use Grt.Readline;
Raw_Line : Ghdl_C_String;
Prompt : Ghdl_C_String;
begin
Prompt := To_Ghdl_C_String (Prompt_Debug'Address);
case Reason is
when Reason_Init =>
Prompt := To_Ghdl_C_String (Prompt_Init'Address);
when Reason_Error =>
Prompt := To_Ghdl_C_String (Prompt_Error'Address);
when Reason_Break =>
case Exec_State is
when Exec_Run =>
if not Is_Breakpoint_Hit then
return;
end if;
Put_Line ("breakpoint hit");
when Exec_Single_Step =>
null;
when Exec_Next =>
if Current_Instance /= Exec_Instance then
return;
end if;
when Exec_Next_Stmt =>
if Current_Instance /= Exec_Instance
or else Is_Within_Statement (Exec_Statement, Current_Loc)
then
return;
end if;
end case;
-- Default state.
Exec_State := Exec_Run;
when Reason_Time =>
Exec_State := Exec_Run;
end case;
case Reason is
when Reason_Error
| Reason_Break =>
Put ("stopped at: ");
Disp_Iir_Location (Current_Loc);
New_Line;
Disp_Source_Line (Get_Location (Current_Loc));
when others =>
null;
end case;
if Current_Loc /= Null_Node then
Set_List_Current (Get_Location (Current_Loc));
end if;
Command_Status := Status_Default;
loop
loop
Raw_Line := Readline (Prompt);
-- Skip empty lines
if Raw_Line = null or else Raw_Line (1) = ASCII.NUL then
if Cmd_Repeat /= null then
Cmd_Repeat.all ("");
case Command_Status is
when Status_Default =>
null;
when Status_Quit =>
return;
end case;
end if;
else
Cmd_Repeat := null;
exit;
end if;
end loop;
declare
Line_Last : constant Natural := strlen (Raw_Line);
Line : String renames Raw_Line (1 .. Line_Last);
P, E : Positive;
Cmd : Menu_Entry_Acc := Menu_Top'Access;
begin
-- Find command
P := 1;
loop
E := P;
Parse_Command (Line, E, Cmd);
exit when Cmd = null;
case Cmd.Kind is
when Menu_Submenu =>
if E > Line_Last then
Put_Line ("missing command for submenu "
& Line (P .. E - 1));
Cmd := null;
exit;
end if;
P := E;
when Menu_Command =>
exit;
end case;
end loop;
if Cmd /= null then
Cmd.Proc.all (Line (E .. Line_Last));
case Command_Status is
when Status_Default =>
null;
when Status_Quit =>
exit;
end case;
end if;
exception
when Command_Error =>
null;
end;
end loop;
-- Put ("resuming");
end Debug;
procedure Debug_Init (Top : Node) is
begin
Flag_Debug_Enable := True;
Current_Instance := null;
Current_Loc := Top;
-- To avoid warnings.
Exec_Statement := Null_Node;
Exec_Instance := null;
Debug (Reason_Init);
end Debug_Init;
procedure Debug_Elab (Top : Synth_Instance_Acc) is
begin
Current_Instance := Top;
Current_Loc := Get_Source_Scope (Top);
Flag_Debug_Enable := True;
-- To avoid warnings.
Exec_Statement := Null_Node;
Exec_Instance := null;
Debug (Reason_Init);
end Debug_Elab;
procedure Debug_Break (Inst : Synth_Instance_Acc; Stmt : Node) is
begin
Current_Instance := Inst;
Current_Loc := Stmt;
Debug (Reason_Break);
end Debug_Break;
procedure Debug_Time is
begin
Current_Instance := Root_Instance;
Current_Loc := Null_Node;
Debug (Reason_Time);
end Debug_Time;
procedure Debug_Leave (Inst : Synth_Instance_Acc) is
begin
if Exec_Instance = Inst then
-- Will be destroyed.
Exec_Instance := null;
case Exec_State is
when Exec_Run =>
null;
when Exec_Single_Step =>
null;
when Exec_Next
| Exec_Next_Stmt =>
-- Leave the frame, will stop just after.
Exec_State := Exec_Single_Step;
end case;
end if;
end Debug_Leave;
procedure Debug_Error (Inst : Synth_Instance_Acc; Expr : Node) is
begin
if Flag_Debug_Enable then
Current_Instance := Inst;
Current_Loc := Expr;
Debug (Reason_Error);
end if;
end Debug_Error;
procedure Disp_A_Frame (Inst: Synth_Instance_Acc) is
begin
if Inst = Root_Instance then
Put_Line ("root instance");
return;
end if;
Put (Vhdl.Errors.Disp_Node (Get_Source_Scope (Inst)));
-- if Inst.Stmt /= Null_Iir then
-- Put (" at ");
-- Put (Files_Map.Image (Get_Location (Inst.Stmt)));
-- end if;
New_Line;
end Disp_A_Frame;
procedure Debug_Bt (Instance : Synth_Instance_Acc)
is
Inst : Synth_Instance_Acc;
begin
Inst := Instance;
while Inst /= null loop
Disp_A_Frame (Inst);
Inst := Get_Caller_Instance (Inst);
end loop;
end Debug_Bt;
pragma Unreferenced (Debug_Bt);
end Elab.Debugger;
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