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------------------------------------------------------------------------------
-- --
-- GNAT RUN-TIME COMPONENTS --
-- --
-- G N A T . M E M O R Y _ D U M P --
-- --
-- B o d y --
-- --
-- Copyright (C) 2003-2023, AdaCore --
-- --
-- GNAT is free software; you can redistribute it and/or modify it under --
-- terms of the GNU General Public License as published by the Free Soft- --
-- ware Foundation; either version 3, or (at your option) any later ver- --
-- sion. GNAT is distributed in the hope that it will be useful, but WITH- --
-- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY --
-- or FITNESS FOR A PARTICULAR PURPOSE. --
-- --
-- As a special exception under Section 7 of GPL version 3, you are granted --
-- additional permissions described in the GCC Runtime Library Exception, --
-- version 3.1, as published by the Free Software Foundation. --
-- --
-- You should have received a copy of the GNU General Public License and --
-- a copy of the GCC Runtime Library Exception along with this program; --
-- see the files COPYING3 and COPYING.RUNTIME respectively. If not, see --
-- <http://www.gnu.org/licenses/>. --
-- --
-- GNAT was originally developed by the GNAT team at New York University. --
-- Extensive contributions were provided by Ada Core Technologies Inc. --
-- --
------------------------------------------------------------------------------
with System; use System;
with System.Img_BIU; use System.Img_BIU;
with System.Storage_Elements; use System.Storage_Elements;
with GNAT.IO; use GNAT.IO;
with GNAT.Debug_Utilities; use GNAT.Debug_Utilities;
with Ada.Unchecked_Conversion;
package body GNAT.Memory_Dump is
----------
-- Dump --
----------
procedure Dump
(Addr : Address;
Count : Natural)
is
begin
Dump (Addr, Count, Prefix => Absolute_Address);
end Dump;
procedure Dump
(Addr : Address;
Count : Natural;
Prefix : Prefix_Type)
is
Ctr : Natural := Count;
-- Count of bytes left to output
Offset_Buf : String (1 .. Standard'Address_Size / 4 + 4);
Offset_Last : Natural;
-- Buffer for prefix in Offset mode
Adr : Address := Addr;
-- Current address
N : Natural := 0;
-- Number of bytes output on current line
C : Character;
-- Character at current storage address
AIL : Natural;
-- Number of chars in prefix (including colon and space)
Line_Len : Natural;
-- Line length for entire line
Hex : constant array (0 .. 15) of Character := "0123456789ABCDEF";
type Char_Ptr is access all Character;
function To_Char_Ptr is new Ada.Unchecked_Conversion (Address, Char_Ptr);
begin
case Prefix is
when Absolute_Address =>
AIL := Address_Image_Length - 4 + 2;
when Offset =>
Offset_Last := Offset_Buf'First - 1;
Set_Image_Based_Integer (Ctr, 16, 0, Offset_Buf, Offset_Last);
AIL := Offset_Last - 4 + 2;
when None =>
AIL := 0;
end case;
Line_Len := AIL + 3 * 16 + 2 + 16;
declare
Line_Buf : String (1 .. Line_Len);
begin
while Ctr /= 0 loop
-- Start of line processing
if N = 0 then
case Prefix is
when Absolute_Address =>
declare
S : constant String := Image (Adr);
begin
Line_Buf (1 .. AIL) := S (4 .. S'Length - 1) & ": ";
end;
when Offset =>
declare
Last : Natural := 0;
Len : Natural;
begin
Set_Image_Based_Integer
(Count - Ctr, 16, 0, Offset_Buf, Last);
Len := Last - 4;
Line_Buf (1 .. AIL - Len - 2) := [others => '0'];
Line_Buf (AIL - Len - 1 .. AIL - 2) :=
Offset_Buf (4 .. Last - 1);
Line_Buf (AIL - 1 .. AIL) := ": ";
end;
when None =>
null;
end case;
Line_Buf (AIL + 1 .. Line_Buf'Last) := [others => ' '];
Line_Buf (AIL + 3 * 16 + 1) := '"';
end if;
-- Add one character to current line
C := To_Char_Ptr (Adr).all;
Adr := Adr + 1;
Ctr := Ctr - 1;
Line_Buf (AIL + 3 * N + 1) := Hex (Character'Pos (C) / 16);
Line_Buf (AIL + 3 * N + 2) := Hex (Character'Pos (C) mod 16);
if C < ' ' or else C = Character'Val (16#7F#) then
C := '?';
end if;
Line_Buf (AIL + 3 * 16 + 2 + N) := C;
N := N + 1;
-- End of line processing
if N = 16 then
Line_Buf (Line_Buf'Last) := '"';
GNAT.IO.Put_Line (Line_Buf);
N := 0;
end if;
end loop;
-- Deal with possible last partial line
if N /= 0 then
Line_Buf (AIL + 3 * 16 + 2 + N) := '"';
GNAT.IO.Put_Line (Line_Buf (1 .. AIL + 3 * 16 + 2 + N));
end if;
end;
end Dump;
end GNAT.Memory_Dump;
|
