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Pascal/Delphi Source File
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1998-09-24
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21KB
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768 lines
{
$Id: aasm.pas,v 1.1.1.1 1998/03/25 11:18:16 root Exp $
Copyright (c) 1996-98 by Florian Klaempfl
This unit implements an abstract asmoutput class for all processor types
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, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
****************************************************************************
}
unit aasm;
interface
uses
cobjects,files,globals;
{$I version.inc}
type
{$ifdef klaempfl}
{$ifdef ver0_9_2}
extended = double;
{$endif ver0_9_2}
{$endif klaempfl}
tait = (
ait_string,
ait_label,
ait_direct,
ait_labeled_instruction,
ait_comment,
ait_instruction,
ait_datablock,
ait_symbol,
ait_const_32bit,
ait_const_symbol,
ait_const_16bit,
ait_const_8bit,
ait_real_64bit,
ait_real_32bit,
ait_real_extended,
ait_comp,
ait_external,
ait_align,
{ the following is only used by the win32 version of the compiler }
{ and only the GNU AS Win32 is able to write it }
ait_section,
ait_const_rva,
{ the following must is system depended }
{$ifdef GDB}
ait_stabn,
ait_stabs,
ait_stab_function_name,
{$endif GDB}
{$ifdef MAKELIB}
{ used to split unit into tiny assembler files }
ait_cut,
{$endif MAKELIB}
{ never used, makes insertation of new ait_ easier to type }
ait_dummy);
type
{ the short name makes typing easier }
pai = ^tai;
tai = object(tlinkedlist_item)
typ : tait;
line : longint;
infile : pinputfile;
constructor init;
end;
pai_string = ^tai_string;
tai_string = object(tai)
str : pchar;
{ extra len so the string can contain an \0 }
len : longint;
constructor init(const _str : string);
constructor init_pchar(_str : pchar);
destructor done;virtual;
end;
pai_symbol = ^tai_symbol;
{ generates a common label }
tai_symbol = object(tai)
name : pchar;
is_global : boolean;
constructor init(const _name : string);
constructor init_global(const _name : string);
destructor done;virtual;
end;
{ external types defined for TASM }
{ EXT_ANY for search purposes }
texternal_typ = (EXT_ANY,EXT_NEAR, EXT_FAR, EXT_PROC, EXT_BYTE,
EXT_WORD, EXT_DWORD, EXT_CODEPTR, EXT_DATAPTR,
EXT_FWORD, EXT_PWORD, EXT_QWORD, EXT_TBYTE, EXT_ABS);
pai_external = ^tai_external;
{ generates an symbol which is marked as external }
tai_external = object(tai)
name : pchar;
exttyp : texternal_typ;
constructor init(const _name : string;exttype : texternal_typ);
destructor done; virtual;
end;
{ simple temporary label }
pai_label = ^tai_label;
{ type for a temporary label }
{ test if used for dispose of unnecessary labels }
tlabel = record
nb : longint;
is_used : boolean;
is_set : boolean;
refcount : word;
end;
plabel = ^tlabel;
tai_label = object(tai)
l : plabel;
constructor init(_l : plabel);
destructor done; virtual;
end;
pai_direct = ^tai_direct;
tai_direct = object(tai)
str : pchar;
constructor init(_str : pchar);
destructor done; virtual;
end;
{ alignment for operator }
pai_align = ^tai_align;
tai_align = object(tai)
aligntype: byte; { 1 = no align, 2 = word align, 4 = dword align }
op: byte; { value to fill with - optional }
constructor init(b:byte);
constructor init_op(b: byte; use_op: byte);
destructor done;virtual;
end;
pai_section = ^tai_section;
tai_section = object(tai)
name : pstring;
constructor init(const s : string);
destructor done;virtual;
end;
pai_datablock = ^tai_datablock;
{ generates an uninitilizised data block }
tai_datablock = object(tai)
size : longint;
name : pchar;
is_global : boolean;
constructor init(const _name : string;_size : longint);
constructor init_global(const _name : string;_size : longint);
destructor done; virtual;
end;
pai_const = ^tai_const;
{ generates a long integer (32 bit) }
tai_const = object(tai)
value : longint;
constructor init_32bit(_value : longint);
constructor init_16bit(_value : word);
constructor init_8bit(_value : byte);
constructor init_symbol(p : pchar);
constructor init_rva(p : pchar);
destructor done;virtual;
end;
pai_double = ^tai_double;
{ generates a double (64 bit real) }
tai_double = object(tai)
value : double;
constructor init(_value : double);
end;
pai_single = ^tai_single;
{ generates a single (32 bit real) }
tai_single = object(tai)
value : single;
constructor init(_value : single);
end;
pai_extended = ^tai_extended;
{ generates an extended (80 bit real) }
{ for version above v0_9_8 }
{ creates a double otherwise }
tai_extended = object(tai)
value : bestreal;
constructor init(_value : bestreal);
end;
{$ifdef MAKELIB}
pai_cut = ^tai_cut;
tai_cut = object(tai)
constructor init;
end;
{$endif MAKELIB}
{ for each processor define the best precision }
{ bestreal is defined in globals }
{$ifdef i386}
{$ifdef ver_above0_9_8}
const
ait_bestreal = ait_real_extended;
type
pai_bestreal = pai_extended;
tai_bestreal = tai_extended;
{$else ver_above0_9_8}
const
ait_bestreal = ait_real_64bit;
type
pai_bestreal = pai_double;
tai_bestreal = tai_double;
{$endif ver_above0_9_8}
{$endif i386}
{$ifdef m68k}
const
ait_bestreal = ait_real_32bit;
type
pai_bestreal = pai_single;
tai_bestreal = tai_single;
{$endif m68k}
pai_comp = ^tai_comp;
{ generates an comp (integer over 64 bits) }
tai_comp = object(tai)
value : bestreal;
constructor init(_value : bestreal);
end;
paasmoutput = ^taasmoutput;
taasmoutput = tlinkedlist;
var
datasegment,codesegment,bsssegment,
internals,externals,debuglist,consts,importssection,
exportssection,resourcesection : paasmoutput;
{ external symbols without repetition }
function search_assembler_symbol(pl : paasmoutput;const _name : string;exttype : texternal_typ) : pai_external;
procedure concat_external(const _name : string;exttype : texternal_typ);
procedure concat_internal(const _name : string;exttype : texternal_typ);
implementation
uses strings,verbose;
{****************************************************************************
TAI
****************************************************************************}
constructor tai.init;
begin
{$ifdef GDB}
infile:=pointer(current_module^.current_inputfile);
if assigned(infile) then
line:=current_module^.current_inputfile^.line_no;
{$endif GDB}
end;
{****************************************************************************
TAI_SECTION
****************************************************************************}
constructor tai_section.init(const s : string);
begin
inherited init;
typ:=ait_section;
name:=stringdup(s);
end;
destructor tai_section.done;
begin
stringdispose(name);
inherited done;
end;
{****************************************************************************
TAI_DATABLOCK
****************************************************************************}
constructor tai_datablock.init(const _name : string;_size : longint);
begin
inherited init;
typ:=ait_datablock;
name:=strpnew(_name);
concat_internal(_name,EXT_ANY);
size:=_size;
is_global:=false;
end;
constructor tai_datablock.init_global(const _name : string;_size : longint);
begin
inherited init;
typ:=ait_datablock;
name:=strpnew(_name);
concat_internal(_name,EXT_ANY);
size:=_size;
is_global:=true;
end;
destructor tai_datablock.done;
begin
strdispose(name);
inherited done;
end;
{****************************************************************************
TAI_SYMBOL
****************************************************************************}
constructor tai_symbol.init(const _name : string);
begin
inherited init;
typ:=ait_symbol;
name:=strpnew(_name);
concat_internal(_name,EXT_ANY);
is_global:=false;
end;
constructor tai_symbol.init_global(const _name : string);
begin
inherited init;
typ:=ait_symbol;
name:=strpnew(_name);
concat_internal(_name,EXT_ANY);
is_global:=true;
end;
destructor tai_symbol.done;
begin
strdispose(name);
inherited done;
end;
{****************************************************************************
TAI_EXTERNAL
****************************************************************************}
constructor tai_external.init(const _name : string;exttype : texternal_typ);
begin
inherited init;
typ:=ait_external;
exttyp:=exttype;
name:=strpnew(_name);
end;
destructor tai_external.done;
begin
strdispose(name);
inherited done;
end;
function search_assembler_symbol(pl : paasmoutput;const _name : string;exttype : texternal_typ) : pai_external;
var
p : pai;
begin
search_assembler_symbol:=nil;
if pl=nil then
internalerror(2001)
else
begin
p:=pai(pl^.first);
while (p<>nil) and
(p<>pai(pl^.last)) do
{ if we get the same name with a different typ }
{ there is probably an error }
if (p^.typ=ait_external) and
((exttype=EXT_ANY) or (pai_external(p)^.exttyp=exttype)) and
(strpas(pai_external(p)^.name)=_name) then
begin
search_assembler_symbol:=pai_external(p);
exit;
end
else
p:=pai(p^.next);
if (p<>nil) and
(p^.typ=ait_external) and
(pai_external(p)^.exttyp=exttype) and
(strpas(pai_external(p)^.name)=_name) then
begin
search_assembler_symbol:=pai_external(p);
exit;
end;
end;
end;
{ insert each need external only once }
procedure concat_external(const _name : string;exttype : texternal_typ);
var
p : pai_external;
begin
p:=search_assembler_symbol(externals,_name,exttype);
if p=nil then
externals^.concat(new(pai_external,init(_name,exttype)));
end;
{ insert each need external only once }
procedure concat_internal(const _name : string;exttype : texternal_typ);
var
p : pai_external;
begin
p:=search_assembler_symbol(internals,_name,exttype);
if p=nil then
internals^.concat(new(pai_external,init(_name,exttype)));
end;
{****************************************************************************
TAI_CONST
****************************************************************************}
constructor tai_const.init_32bit(_value : longint);
begin
inherited init;
typ:=ait_const_32bit;
value:=_value;
end;
constructor tai_const.init_16bit(_value : word);
begin
inherited init;
typ:=ait_const_16bit;
value:=_value;
end;
constructor tai_const.init_8bit(_value : byte);
begin
inherited init;
typ:=ait_const_8bit;
value:=_value;
end;
constructor tai_const.init_symbol(p : pchar);
begin
inherited init;
typ:=ait_const_symbol;
value:=longint(p);
end;
constructor tai_const.init_rva(p : pchar);
begin
inherited init;
typ:=ait_const_rva;
value:=longint(p);
end;
destructor tai_const.done;
begin
if typ=ait_const_symbol then
strdispose(pchar(value));
inherited done;
end;
{****************************************************************************
TAI_DOUBLE
****************************************************************************}
constructor tai_double.init(_value : double);
begin
inherited init;
typ:=ait_real_64bit;
value:=_value;
end;
{****************************************************************************
TAI_SINGLE
****************************************************************************}
constructor tai_single.init(_value : single);
begin
inherited init;
typ:=ait_real_32bit;
value:=_value;
end;
{****************************************************************************
TAI_EXTENDED
****************************************************************************}
constructor tai_extended.init(_value : bestreal);
begin
inherited init;
typ:=ait_real_extended;
value:=_value;
end;
{****************************************************************************
TAI_COMP
****************************************************************************}
constructor tai_comp.init(_value : bestreal);
begin
inherited init;
typ:=ait_comp;
value:=_value;
end;
{****************************************************************************
TAI_STRING
****************************************************************************}
constructor tai_string.init(const _str : string);
begin
inherited init;
typ:=ait_string;
getmem(str,length(_str)+1);
strpcopy(str,_str);
len:=length(_str);
end;
constructor tai_string.init_pchar(_str : pchar);
begin
inherited init;
typ:=ait_string;
str:=_str;
len:=strlen(_str);
end;
destructor tai_string.done;
begin
{ you can have #0 inside the strings so }
if str<>nil then
freemem(str,len+1);
inherited done;
end;
{****************************************************************************
TAI_LABEL
****************************************************************************}
constructor tai_label.init(_l : plabel);
begin
inherited init;
typ:=ait_label;
l:=_l;
l^.is_set:=true;
{ suggestion of JM:
inc(l^.refcount); }
end;
destructor tai_label.done;
begin
{ suggestion of JM:
dec(l^.refcount); }
if (l^.is_used) then
l^.is_set:=false
else dispose(l);
inherited done;
end;
{****************************************************************************
TAI_DIRECT
****************************************************************************}
constructor tai_direct.init(_str : pchar);
begin
inherited init;
typ:=ait_direct;
str:=_str;
end;
destructor tai_direct.done;
begin
strdispose(str);
inherited done;
end;
{****************************************************************************
TAI_ALIGN
****************************************************************************}
constructor tai_align.init(b: byte);
begin
inherited init;
typ:=ait_align;
if b in [1,2,4,8,16] then
aligntype := b
else
aligntype := 1;
op:=0;
end;
constructor tai_align.init_op(b: byte; use_op: byte);
begin
inherited init;
typ:=ait_align;
if b in [1,2,4,8,16] then
aligntype := b
else
aligntype := 1;
op:=use_op;
end;
destructor tai_align.done;
begin
inherited done;
end;
{$ifdef MAKELIB}
{****************************************************************************
TAI_CUT
****************************************************************************}
constructor tai_cut.init;
begin
inherited init;
typ:=ait_cut;
end;
{$endif MAKELIB}
end.
{
$Log: aasm.pas,v $
Revision 1.1.1.1 1998/03/25 11:18:16 root
* Restored version
Revision 1.18 1998/03/10 16:27:36 pierre
* better line info in stabs debug
* symtabletype and lexlevel separated into two fields of tsymtable
+ ifdef MAKELIB for direct library output, not complete
+ ifdef CHAINPROCSYMS for overloaded seach across units, not fully
working
+ ifdef TESTFUNCRET for setting func result in underfunction, not
working
Revision 1.17 1998/03/10 01:17:13 peter
* all files have the same header
* messages are fully implemented, EXTDEBUG uses Comment()
+ AG... files for the Assembler generation
Revision 1.16 1998/03/02 01:47:56 peter
* renamed target_DOS to target_GO32V1
+ new verbose system, merged old errors and verbose units into one new
verbose.pas, so errors.pas is obsolete
Revision 1.15 1998/02/28 14:43:46 florian
* final implemenation of win32 imports
* extended tai_align to allow 8 and 16 byte aligns
Revision 1.14 1998/02/28 00:20:20 florian
* more changes to get import libs for Win32 working
Revision 1.13 1998/02/27 22:27:50 florian
+ win_targ unit
+ support of sections
+ new asmlists: sections, exports and resource
Revision 1.12 1998/02/24 00:19:08 peter
* makefile works again (btw. linux does like any char after a \ )
* removed circular unit with assemble and files
* fixed a sigsegv in pexpr
* pmodule init unit/program is the almost the same, merged them
Revision 1.11 1998/02/13 10:34:29 daniel
* Made Motorola version compilable.
* Fixed optimizer
Revision 1.10 1998/02/06 23:08:31 florian
+ endian to targetinfo and sourceinfo added
+ endian independed writing of ppu file (reading missed), a PPU file
is written with the target endian
Revision 1.9 1998/01/11 04:14:30 carl
+ correct floating point support for m68k
Revision 1.6 1997/12/09 13:18:34 carl
+ added pai_align abstract object (required for m68k)
+ renamed ait_real_s80bit --> ait_real_extended
Revision 1.5 1997/12/01 18:14:32 pierre
* fixes a bug in nasm output due to my previous changes
Revision 1.3 1997/11/28 18:14:17 pierre
working version with several bug fixes
Revision 1.2 1997/11/28 14:26:18 florian
Fixed some bugs
Revision 1.1.1.1 1997/11/27 08:32:50 michael
FPC Compiler CVS start
Pre-CVS log:
FK Florian Klaempfl
PM Pierre Muller
+ feature added
- removed
* bug fixed or changed
History:
30th september 1996:
+ unit started
13th november 1997:
+ added pai_single and pai_extended (PM)
14th november 1997:
+ added bestreal type and pai_bestreal
to store all real consts with best precision (PM)
has a drawback for GDB that does not know extended !! (PM)
}