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{
Copyright (c) 1998-2006 by Florian Klaempfl
This unit contains utility functions for assembler output
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 asmutils;
interface
{$i fpcdefs.inc}
uses
globtype,
aasmbase,
aasmdata;
function emit_ansistring_const(list:TAsmList;data:PChar;len:LongInt;encoding:tstringencoding;NewSection:Boolean=True):TAsmLabel;
function emit_unicodestring_const(list:TAsmList;data:Pointer;encoding:tstringencoding;Winlike:Boolean):TAsmLabel;
implementation
uses
globals,
systems,
verbose,
aasmtai,
widestr,
symdef;
function emit_ansistring_const(list:TAsmList;data:PChar;len:LongInt;encoding:tstringencoding;NewSection:Boolean): TAsmLabel;
var
referencelab: TAsmLabel;
s: PChar;
begin
current_asmdata.getdatalabel(result);
if NewSection then
new_section(list,sec_rodata,result.name,const_align(sizeof(pint)));
referencelab := nil;
if target_info.system in systems_darwin then
begin
current_asmdata.getdatalabel(referencelab);
list.concat(tai_label.create(referencelab));
end;
list.concat(tai_const.create_16bit(encoding));
list.concat(tai_const.create_16bit(1));
{$ifdef cpu64bitaddr}
{ dummy for alignment }
list.concat(tai_const.create_32bit(0));
{$endif cpu64bitaddr}
list.concat(tai_const.create_pint(-1));
list.concat(tai_const.create_pint(len));
{ make sure the string doesn't get dead stripped if the header is referenced }
if target_info.system in systems_darwin then
list.concat(tai_directive.create(asd_reference,result.name));
list.concat(tai_label.create(result));
{ and vice versa }
if target_info.system in systems_darwin then
list.concat(tai_directive.create(asd_reference,referencelab.name));
getmem(s,len+1);
move(data^,s^,len);
s[len]:=#0;
list.concat(tai_string.create_pchar(s,len+1)); { terminating zero included }
end;
function emit_unicodestring_const(list:TAsmList;data:Pointer;encoding:tstringencoding;Winlike:Boolean):TAsmLabel;
var
referencelab: TAsmLabel;
i, strlength: SizeInt;
begin
current_asmdata.getdatalabel(result);
new_section(list,sec_rodata,result.name,const_align(sizeof(pint)));
referencelab := nil;
if target_info.system in systems_darwin then
begin
current_asmdata.getdatalabel(referencelab);
list.concat(tai_label.create(referencelab));
end;
strlength := getlengthwidestring(pcompilerwidestring(data));
if Winlike then
list.concat(Tai_const.Create_32bit(strlength*cwidechartype.size))
else
begin
list.concat(tai_const.create_16bit(encoding));
list.concat(tai_const.create_16bit(2));
{$ifdef cpu64bitaddr}
{ dummy for alignment }
list.concat(Tai_const.Create_32bit(0));
{$endif cpu64bitaddr}
list.concat(Tai_const.Create_pint(-1));
list.concat(Tai_const.Create_pint(strlength));
end;
{ make sure the string doesn't get dead stripped if the header is referenced }
if (target_info.system in systems_darwin) then
list.concat(tai_directive.create(asd_reference,result.name));
list.concat(Tai_label.Create(result));
{ ... and vice versa }
if (target_info.system in systems_darwin) then
list.concat(tai_directive.create(asd_reference,referencelab.name));
if cwidechartype.size = 2 then
begin
for i:=0 to strlength-1 do
list.concat(Tai_const.Create_16bit(pcompilerwidestring(data)^.data[i]));
{ ending #0 }
list.concat(Tai_const.Create_16bit(0));
end
else
InternalError(200904271); { codegeneration for other sizes must be written }
end;
end.
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