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{
Fake GDBInt unit
**********************************************************************}
unit GDBInt;
interface
type
CORE_ADDR = cardinal; { might be target dependent PM }
streamtype = (afile,astring);
C_FILE = longint; { at least under DJGPP }
P_C_FILE = ^C_FILE;
psyminfo=^tsyminfo;
tsyminfo=record
address : longint;
fname : pchar;
line : longint;
funcname : pchar;
end;
tframeentry = object
file_name : pchar;
function_name : pchar;
args : pchar;
line_number : longint;
address : longint;
constructor init;
destructor done;
procedure reset;
procedure clear;
end;
pframeentry=^tframeentry;
ppframeentry=^pframeentry;
tgdbbuffer=object
buf : pchar;
size,
idx : longint;
constructor Init;
destructor Done;
procedure Reset;
procedure Resize(nsize : longint);
procedure Append(p:pchar);
end;
PGDBInterface=^TGDBInterface;
TGDBInterface=object
gdberrorbuf,
gdboutputbuf : tgdbbuffer;
command_level,
got_error,
reset_command,
call_reset,
Debuggee_started : boolean;
{ frames and frame info while recording a frame }
frames : ppframeentry;
frame_size,
frame_count : longint;
record_frames,
frame_begin_seen : boolean;
stop_breakpoint_number,
current_address,
current_line_number,
signal_start,
signal_end,
error_start,
error_end,
function_start,
function_end,
args_start,
args_end,
file_start,
file_end,
line_start,
line_end : longint;
signal_name,
signal_string : pchar;
current_pc : CORE_ADDR;
{ breakpoint }
last_breakpoint_number,
last_breakpoint_address,
last_breakpoint_line : longint;
last_breakpoint_file : pchar;
invalid_breakpoint_line : boolean;
{ Highlevel }
user_screen_shown,
switch_to_user : boolean;
constructor Init;
destructor Done;
procedure clear_frames;
{ functions }
function error:boolean;
function error_num:longint;
function get_current_frame : longint;
function set_current_frame(level : longint) : boolean;
procedure DebuggerScreen;
procedure UserScreen;
{ Hooks }
procedure DoSelectSourceline(const fn:string;line:longint);virtual;
procedure DoStartSession;virtual;
procedure DoBreakSession;virtual;
procedure DoEndSession(code:longint);virtual;
procedure DoDebuggerScreen;virtual;
procedure DoUserScreen;virtual;
function AllowQuit : boolean;virtual;
end;
function GDBVersion : string;
var
curr_gdb : pgdbinterface;
const
use_gdb_file : boolean = false;
var
gdb_file : text;
inferior_pid : longint;
implementation
uses
strings;
constructor TGDBInterface.Init;
begin
end;
destructor TGDBInterface.Done;
begin
end;
function tgdbinterface.error:boolean;
begin
error:=false;
end;
function tgdbinterface.error_num:longint;
begin
error_num:=0;
end;
function TGDBInterface.get_current_frame : longint;
begin
get_current_frame:=0;
end;
function TGDBInterface.set_current_frame(level : longint) : boolean;
begin
set_current_frame:=true;
end;
procedure TGDBInterface.Clear_Frames;
begin
end;
procedure TGDBInterface.DebuggerScreen;
begin
end;
procedure TGDBInterface.UserScreen;
begin
end;
procedure TGDBInterface.DoSelectSourceline(const fn:string;line:longint);
begin
end;
procedure TGDBInterface.DoStartSession;
begin
end;
procedure TGDBInterface.DoBreakSession;
begin
end;
procedure TGDBInterface.DoEndSession(code:longint);
begin
end;
procedure TGDBInterface.DoDebuggerScreen;
begin
end;
procedure TGDBInterface.DoUserScreen;
begin
end;
function tgdbinterface.AllowQuit : boolean;
begin
AllowQuit:=true;
end;
function GDBVersion : string;
begin
GDBVersion:='Fake GDB';
end;
{*****************************************************************************
TFrameEntry
*****************************************************************************}
constructor tframeentry.init;
begin
Reset;
end;
destructor tframeentry.done;
begin
Clear;
end;
procedure tframeentry.reset;
begin
file_name:=nil;
function_name:=nil;
args:=nil;
line_number:=0;
address:=0;
end;
procedure tframeentry.clear;
begin
if assigned(file_name) then
strdispose(file_name);
if assigned(function_name) then
strdispose(function_name);
if assigned(args) then
strdispose(args);
reset;
end;
{*****************************************************************************
tgdbbuffer
*****************************************************************************}
const
blocksize=2048;
constructor tgdbbuffer.init;
begin
Buf:=nil;
Size:=0;
Resize(blocksize);
Reset;
end;
destructor tgdbbuffer.done;
begin
if assigned(buf) then
freemem(buf,size);
end;
procedure tgdbbuffer.reset;
begin
idx:=0;
Buf[0]:=#0;
end;
procedure tgdbbuffer.append(p:pchar);
var
len : longint;
begin
if not assigned(p) then
exit;
len:=Strlen(p);
if len+idx>size then
Resize(len+idx);
Move(p^,buf[idx],len);
inc(idx,len);
buf[idx]:=#0;
end;
procedure tgdbbuffer.resize(nsize : longint);
var
np : pchar;
begin
nsize:=((nsize+blocksize-1) div blocksize)*blocksize;
getmem(np,nsize);
move(buf^,np^,size);
freemem(buf,size);
buf:=np;
size:=nsize;
end;
end.
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