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1247 lines
39 KiB
ObjectPascal
1247 lines
39 KiB
ObjectPascal
{
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Copyright (c) 2002 by Florian Klaempfl
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This unit implements an asmoutput class for PowerPC with MPW syntax
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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****************************************************************************
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}
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{
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This unit implements an asmoutput class for PowerPC with MPW syntax
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}
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unit agppcmpw;
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{$i fpcdefs.inc}
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{ We know that use_PR is a const boolean
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but we don't care about this warning }
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{$WARN 6018 OFF}
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interface
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uses
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aasmtai,aasmdata,
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globals,aasmbase,aasmcpu,assemble,
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cpubase;
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type
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TPPCMPWAssembler = class(TExternalAssembler)
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procedure WriteTree(p:TAsmList);override;
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procedure WriteAsmList;override;
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Function DoAssemble:boolean;override;
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procedure WriteExternals;
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procedure WriteAsmFileHeader;
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private
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cur_CSECT_name: String;
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cur_CSECT_class: String;
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procedure WriteInstruction(hp : tai);
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procedure WriteProcedureHeader(var hp:tai);
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procedure WriteDataHeader(var s:string; isExported, isConst:boolean);
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end;
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implementation
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uses
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cutils,globtype,systems,cclasses,
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verbose,finput,fmodule,script,cpuinfo,
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cgbase,cgutils,
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itcpugas
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;
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const
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line_length = 70;
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{Whether internal procedure references should be xxx[PR]: }
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use_PR = false;
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const_storage_class = '';
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var_storage_class = '';
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secnames : array[TAsmSectiontype] of string[10] = (
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'', {none}
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'', {user}
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'csect', {code}
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'csect', {data}
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'csect', {read only data}
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'csect', {read only data - no relocations}
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'csect', {bss} 'csect', '',
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'csect','csect','csect','csect','csect',
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'csect','csect','csect',
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'','','','','','','','','','','','','','',
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'',
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'',
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'',
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'',
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'',
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'',
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'',
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'',
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'',
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'',
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'',
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'',
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'',
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'',
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'',
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'',
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'',
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'',
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'',
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'',
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'',
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'',
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'',
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'',
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'',
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'',
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'',
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'',
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'',
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'',
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'',
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'',
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'',
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'',
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'',
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'',
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'',
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''
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);
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type
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t64bitarray = array[0..7] of byte;
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t32bitarray = array[0..3] of byte;
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function ReplaceForbiddenChars(var s: string):Boolean;
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{Returns wheater a replacement has occurred.}
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var
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i:Integer;
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{The dollar sign is not allowed in MPW PPCAsm}
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begin
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ReplaceForbiddenChars:=false;
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for i:=1 to Length(s) do
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if s[i]='$' then
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begin
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s[i]:='s';
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ReplaceForbiddenChars:=true;
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end;
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end;
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{*** From here is copyed from agppcgas.pp, except where marked with CHANGED.
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Perhaps put in a third common file. ***}
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function getreferencestring(var ref : treference) : string;
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var
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s : string;
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begin
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with ref do
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begin
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if (refaddr <> addr_no) then
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InternalError(2002110301)
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else if ((offset < -32768) or (offset > 32767)) then
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InternalError(19991);
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if assigned(symbol) then
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begin
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s:= symbol.name;
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ReplaceForbiddenChars(s);
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{if symbol.typ = AT_FUNCTION then
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;}
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s:= s+'[TC]' {ref to TOC entry }
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end
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else
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s:= '';
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if offset<0 then
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s:=s+tostr(offset)
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else
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if (offset>0) then
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begin
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if assigned(symbol) then
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s:=s+'+'+tostr(offset)
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else
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s:=s+tostr(offset);
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end;
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if (index=NR_NO) and (base<>NR_NO) then
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begin
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if offset=0 then
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if not assigned(symbol) then
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s:=s+'0';
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s:=s+'('+gas_regname(base)+')';
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end
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else if (index<>NR_NO) and (base<>NR_NO) and (offset=0) then
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begin
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if (offset=0) then
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s:=s+gas_regname(base)+','+gas_regname(index)
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else
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internalerror(19992);
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end
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else if (base=NR_NO) and (offset=0) then
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begin
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{Temporary fix for inline asm, where a local var is referenced.}
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//if assigned(symbol) then
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// s:= s+'(rtoc)';
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end;
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end;
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getreferencestring:=s;
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end;
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function getopstr_jmp(const o:toper) : string;
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var
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hs : string;
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begin
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case o.typ of
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top_reg :
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getopstr_jmp:=gas_regname(o.reg);
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{ no top_ref jumping for powerpc }
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top_const :
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getopstr_jmp:=tostr(o.val);
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top_ref :
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begin
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if o.ref^.refaddr=addr_full then
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begin
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hs:=o.ref^.symbol.name;
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ReplaceForbiddenChars(hs);
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case o.ref^.symbol.typ of
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AT_FUNCTION:
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begin
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if hs[1] <> '@' then {if not local label}
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if use_PR then
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hs:= '.'+hs+'[PR]'
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else
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hs:= '.'+hs
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end
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else
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;
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end;
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if o.ref^.offset>0 then
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hs:=hs+'+'+tostr(o.ref^.offset)
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else
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if o.ref^.offset<0 then
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hs:=hs+tostr(o.ref^.offset);
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getopstr_jmp:=hs;
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end
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else
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internalerror(200402263);
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end;
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top_none:
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getopstr_jmp:='';
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else
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internalerror(2002070603);
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end;
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end;
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function getopstr(const o:toper) : string;
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var
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hs : string;
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begin
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case o.typ of
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top_reg:
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getopstr:=gas_regname(o.reg);
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top_const:
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getopstr:=tostr(longint(o.val));
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top_ref:
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if o.ref^.refaddr=addr_no then
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getopstr:=getreferencestring(o.ref^)
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else if o.ref^.refaddr=addr_pic_no_got then
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begin
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if (o.ref^.base<>NR_RTOC) or
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(o.ref^.index<>NR_NO) or
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(o.ref^.offset<>0) or
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not assigned(o.ref^.symbol) then
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internalerror(2011122701);
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hs:=o.ref^.symbol.name;
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ReplaceForbiddenChars(hs);
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if o.ref^.symbol.bind=AB_EXTERNAL then
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hs:=hs+'[TC]';
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hs:=hs+'(RTOC)';
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getopstr:=hs;
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end
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else
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begin
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hs:=o.ref^.symbol.name;
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ReplaceForbiddenChars(hs);
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if o.ref^.offset>0 then
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hs:=hs+'+'+tostr(o.ref^.offset)
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else
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if o.ref^.offset<0 then
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hs:=hs+tostr(o.ref^.offset);
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getopstr:=hs;
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end;
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else
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internalerror(2002070604);
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end;
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end;
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type
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topstr = string[4];
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function branchmode(o: tasmop): topstr;
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var tempstr: topstr;
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begin
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tempstr := '';
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case o of
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A_BCCTR,A_BCCTRL: tempstr := 'ctr';
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A_BCLR,A_BCLRL: tempstr := 'lr';
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end;
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case o of
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A_BL,A_BLA,A_BCL,A_BCLA,A_BCCTRL,A_BCLRL: tempstr := tempstr+'l';
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end;
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case o of
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A_BA,A_BLA,A_BCA,A_BCLA: tempstr:=tempstr+'a';
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end;
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branchmode := tempstr;
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end;
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function cond2str(op: tasmop; c: tasmcond): string;
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{ note: no checking is performed whether the given combination of }
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{ conditions is valid }
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var
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tempstr: string;
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begin
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tempstr:=#9;
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case c.simple of
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false:
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begin
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cond2str := tempstr+gas_op2str[op];
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case c.dirhint of
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DH_None:;
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DH_Minus:
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cond2str:=cond2str+'-';
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DH_Plus:
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cond2str:=cond2str+'+';
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else
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internalerror(2003112901);
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end;
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cond2str:=cond2str+#9+tostr(c.bo)+','+tostr(c.bi)+',';
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end;
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true:
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if (op >= A_B) and (op <= A_BCLRL) then
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case c.cond of
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{ unconditional branch }
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C_NONE:
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cond2str := tempstr+gas_op2str[op];
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{ bdnzt etc }
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else
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begin
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tempstr := tempstr+'b'+asmcondflag2str[c.cond]+
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branchmode(op);
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case c.dirhint of
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DH_None:
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tempstr:=tempstr+#9;
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DH_Minus:
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tempstr:=tempstr+('-'+#9);
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DH_Plus:
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tempstr:=tempstr+('+'+#9);
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else
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internalerror(2003112901);
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end;
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case c.cond of
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C_LT..C_NU:
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cond2str := tempstr+gas_regname(newreg(R_SPECIALREGISTER,c.cr,R_SUBWHOLE));
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C_T,C_F,C_DNZT,C_DNZF,C_DZT,C_DZF:
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cond2str := tempstr+tostr(c.crbit);
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else
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cond2str := tempstr;
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end;
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end;
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end
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{ we have a trap instruction }
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else
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begin
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internalerror(2002070601);
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{ not yet implemented !!!!!!!!!!!!!!!!!!!!! }
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{ case tempstr := 'tw';}
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end;
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end;
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end;
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procedure TPPCMPWAssembler.WriteInstruction(hp : tai);
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var op: TAsmOp;
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s: string;
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i: byte;
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sep: string[3];
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begin
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op:=taicpu(hp).opcode;
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if is_calljmp(op) then
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begin
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{ direct BO/BI in op[0] and op[1] not supported, put them in condition! }
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case op of
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A_B,A_BA:
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s:=#9+gas_op2str[op]+#9;
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A_BCTR,A_BCTRL,A_BLR,A_BLRL:
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s:=#9+gas_op2str[op];
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A_BL,A_BLA:
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s:=#9+gas_op2str[op]+#9;
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else
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begin
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s:=cond2str(op,taicpu(hp).condition);
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if (s[length(s)] <> #9) and
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(taicpu(hp).ops>0) then
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s := s + ',';
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end;
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end;
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if (taicpu(hp).ops>0) and (taicpu(hp).oper[0]^.typ<>top_none) then
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begin
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{ first write the current contents of s, because the symbol }
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{ may be 255 characters }
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writer.AsmWrite(s);
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s:=getopstr_jmp(taicpu(hp).oper[0]^);
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end;
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end
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else
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{ process operands }
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begin
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s:=#9+gas_op2str[op];
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if taicpu(hp).ops<>0 then
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begin
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sep:=#9;
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for i:=0 to taicpu(hp).ops-1 do
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begin
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s:=s+sep+getopstr(taicpu(hp).oper[i]^);
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sep:=',';
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end;
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end;
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end;
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writer.AsmWriteLn(s);
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end;
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{*** Until here is copyed from agppcgas.pp. ***}
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function single2str(d : single) : string;
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var
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hs : string;
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p : byte;
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begin
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str(d,hs);
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{ nasm expects a lowercase e }
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p:=pos('E',hs);
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if p>0 then
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hs[p]:='e';
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p:=pos('+',hs);
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if p>0 then
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delete(hs,p,1);
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single2str:=lower(hs);
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end;
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function double2str(d : double) : string;
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var
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hs : string;
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p : byte;
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begin
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str(d,hs);
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{ nasm expects a lowercase e }
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p:=pos('E',hs);
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if p>0 then
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hs[p]:='e';
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p:=pos('+',hs);
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if p>0 then
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delete(hs,p,1);
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double2str:=lower(hs);
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end;
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{ convert floating point values }
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{ to correct endian }
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procedure swap64bitarray(var t: t64bitarray);
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var
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b: byte;
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begin
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b:= t[7];
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t[7] := t[0];
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t[0] := b;
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b := t[6];
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t[6] := t[1];
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t[1] := b;
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b:= t[5];
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t[5] := t[2];
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t[2] := b;
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b:= t[4];
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t[4] := t[3];
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t[3] := b;
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end;
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procedure swap32bitarray(var t: t32bitarray);
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var
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b: byte;
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begin
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b:= t[1];
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t[1]:= t[2];
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t[2]:= b;
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b:= t[0];
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t[0]:= t[3];
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t[3]:= b;
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end;
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Function PadTabs(const p:string;addch:char):string;
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var
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s : string;
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i : longint;
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begin
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i:=length(p);
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if addch<>#0 then
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begin
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inc(i);
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s:=p+addch;
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end
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else
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s:=p;
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if i<8 then
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PadTabs:=s+#9#9
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else
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PadTabs:=s+#9;
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end;
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{****************************************************************************
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PowerPC MPW Assembler
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****************************************************************************}
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procedure TPPCMPWAssembler.WriteProcedureHeader(var hp:tai);
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{Returns the current hp where the caller should continue from}
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{For multiple entry procedures, only the last is exported as xxx[PR]
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(if use_PR is set) }
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procedure WriteExportHeader(hp:tai);
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|
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var
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s: string;
|
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replaced: boolean;
|
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|
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begin
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s:= tai_symbol(hp).sym.name;
|
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replaced:= ReplaceForbiddenChars(s);
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|
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if not use_PR then
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begin
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writer.AsmWrite(#9'export'#9'.');
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writer.AsmWrite(s);
|
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if replaced then
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begin
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writer.AsmWrite(' => ''.');
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writer.AsmWrite(tai_symbol(hp).sym.name);
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writer.AsmWrite('''');
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end;
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writer.AsmLn;
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end;
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|
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writer.AsmWrite(#9'export'#9);
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writer.AsmWrite(s);
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writer.AsmWrite('[DS]');
|
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if replaced then
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begin
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writer.AsmWrite(' => ''');
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writer.AsmWrite(tai_symbol(hp).sym.name);
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writer.AsmWrite('[DS]''');
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end;
|
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writer.AsmLn;
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{Entry in transition vector: }
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writer.AsmWrite(#9'csect'#9); writer.AsmWrite(s); writer.AsmWriteLn('[DS]');
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|
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writer.AsmWrite(#9'dc.l'#9'.'); writer.AsmWriteLn(s);
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|
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writer.AsmWriteln(#9'dc.l'#9'TOC[tc0]');
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{Entry in TOC: }
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writer.AsmWriteLn(#9'toc');
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|
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writer.AsmWrite(#9'tc'#9);
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writer.AsmWrite(s); writer.AsmWrite('[TC],');
|
|
writer.AsmWrite(s); writer.AsmWriteln('[DS]');
|
|
end;
|
|
|
|
function GetAdjacentTaiSymbol(var hp:tai):Boolean;
|
|
|
|
begin
|
|
GetAdjacentTaiSymbol:= false;
|
|
while assigned(hp.next) do
|
|
case tai(hp.next).typ of
|
|
ait_symbol:
|
|
begin
|
|
hp:=tai(hp.next);
|
|
GetAdjacentTaiSymbol:= true;
|
|
Break;
|
|
end;
|
|
ait_function_name:
|
|
hp:=tai(hp.next);
|
|
else
|
|
begin
|
|
//writer.AsmWriteln(' ;#*#*# ' + tostr(Ord(tai(hp.next).typ)));
|
|
Break;
|
|
end;
|
|
end;
|
|
end;
|
|
|
|
var
|
|
first,last: tai;
|
|
s: string;
|
|
replaced: boolean;
|
|
|
|
|
|
begin
|
|
s:= tai_symbol(hp).sym.name;
|
|
{Write all headers}
|
|
first:= hp;
|
|
repeat
|
|
WriteExportHeader(hp);
|
|
last:= hp;
|
|
until not GetAdjacentTaiSymbol(hp);
|
|
|
|
{Start the section of the body of the proc: }
|
|
s:= tai_symbol(last).sym.name;
|
|
replaced:= ReplaceForbiddenChars(s);
|
|
|
|
if use_PR then
|
|
begin
|
|
writer.AsmWrite(#9'export'#9'.'); writer.AsmWrite(s); writer.AsmWrite('[PR]');
|
|
if replaced then
|
|
begin
|
|
writer.AsmWrite(' => ''.');
|
|
writer.AsmWrite(tai_symbol(last).sym.name);
|
|
writer.AsmWrite('[PR]''');
|
|
end;
|
|
writer.AsmLn;
|
|
end;
|
|
|
|
{Starts the section: }
|
|
writer.AsmWrite(#9'csect'#9'.');
|
|
writer.AsmWrite(s);
|
|
writer.AsmWriteLn('[PR]');
|
|
|
|
{Info for the debugger: }
|
|
writer.AsmWrite(#9'function'#9'.');
|
|
writer.AsmWrite(s);
|
|
writer.AsmWriteLn('[PR]');
|
|
|
|
{Write all labels: }
|
|
hp:= first;
|
|
repeat
|
|
s:= tai_symbol(hp).sym.name;
|
|
ReplaceForbiddenChars(s);
|
|
writer.AsmWrite('.'); writer.AsmWrite(s); writer.AsmWriteLn(':');
|
|
until not GetAdjacentTaiSymbol(hp);
|
|
end;
|
|
|
|
procedure TPPCMPWAssembler.WriteDataHeader(var s:string; isExported, isConst:boolean);
|
|
// Returns in s the changed string
|
|
var
|
|
sym: string;
|
|
replaced: boolean;
|
|
|
|
begin
|
|
sym:= s;
|
|
replaced:= ReplaceForbiddenChars(s);
|
|
|
|
if isExported then
|
|
begin
|
|
writer.AsmWrite(#9'export'#9);
|
|
writer.AsmWrite(s);
|
|
if isConst then
|
|
writer.AsmWrite(const_storage_class)
|
|
else
|
|
writer.AsmWrite(var_storage_class);
|
|
if replaced then
|
|
begin
|
|
writer.AsmWrite(' => ''');
|
|
writer.AsmWrite(sym);
|
|
writer.AsmWrite('''');
|
|
end;
|
|
writer.AsmLn;
|
|
end;
|
|
|
|
if not macos_direct_globals then
|
|
begin
|
|
{The actual section is here interrupted, by inserting a "tc" entry}
|
|
writer.AsmWriteLn(#9'toc');
|
|
|
|
writer.AsmWrite(#9'tc'#9);
|
|
writer.AsmWrite(s);
|
|
writer.AsmWrite('[TC], ');
|
|
writer.AsmWrite(s);
|
|
if isConst then
|
|
writer.AsmWrite(const_storage_class)
|
|
else
|
|
writer.AsmWrite(var_storage_class);
|
|
writer.AsmLn;
|
|
|
|
{The interrupted section is here continued.}
|
|
writer.AsmWrite(#9'csect'#9);
|
|
writer.AsmWriteln(cur_CSECT_name+cur_CSECT_class);
|
|
writer.AsmWrite(PadTabs(s+':',#0));
|
|
end
|
|
else
|
|
begin
|
|
writer.AsmWrite(#9'csect'#9);
|
|
writer.AsmWrite(s);
|
|
writer.AsmWrite('[TC]');
|
|
end;
|
|
|
|
writer.AsmLn;
|
|
end;
|
|
|
|
const
|
|
ait_const2str:array[aitconst_32bit..aitconst_8bit] of string[8]=
|
|
(#9'dc.l'#9,#9'dc.w'#9,#9'dc.b'#9);
|
|
|
|
|
|
procedure TPPCMPWAssembler.WriteTree(p:TAsmList);
|
|
var
|
|
s : string;
|
|
hp : tai;
|
|
counter,
|
|
lines,
|
|
InlineLevel : longint;
|
|
i,j,l : longint;
|
|
consttype : taiconst_type;
|
|
do_line,DoNotSplitLine,
|
|
quoted : boolean;
|
|
sin : single;
|
|
d : double;
|
|
|
|
begin
|
|
if not assigned(p) then
|
|
exit;
|
|
InlineLevel:=0;
|
|
{ lineinfo is only needed for al_procedures (PFV) }
|
|
do_line:=((cs_asm_source in current_settings.globalswitches) or
|
|
(cs_lineinfo in current_settings.moduleswitches))
|
|
and (p=current_asmdata.asmlists[al_procedures]);
|
|
DoNotSplitLine:=false;
|
|
hp:=tai(p.first);
|
|
while assigned(hp) do
|
|
begin
|
|
prefetch(pointer(hp.next)^);
|
|
if not(hp.typ in SkipLineInfo) then
|
|
begin
|
|
current_filepos:=tailineinfo(hp).fileinfo;
|
|
{ no line info for inlined code }
|
|
if do_line and (inlinelevel=0) and not DoNotSplitLine then
|
|
WriteSourceLine(hp as tailineinfo);
|
|
end;
|
|
|
|
DoNotSplitLine:=false;
|
|
|
|
case hp.typ of
|
|
ait_comment:
|
|
begin
|
|
writer.AsmWrite(asminfo^.comment);
|
|
writer.AsmWritePChar(tai_comment(hp).str);
|
|
writer.AsmLn;
|
|
end;
|
|
ait_regalloc,
|
|
ait_tempalloc:
|
|
;
|
|
ait_section:
|
|
begin
|
|
{if LastSecType<>sec_none then
|
|
writer.AsmWriteLn('_'+asminfo^.secnames[LastSecType]+#9#9'ENDS');}
|
|
|
|
if tai_section(hp).sectype<>sec_none then
|
|
begin
|
|
if tai_section(hp).sectype in [sec_data,sec_rodata,sec_bss] then
|
|
cur_CSECT_class:= '[RW]'
|
|
else if tai_section(hp).sectype in [sec_code] then
|
|
cur_CSECT_class:= ''
|
|
else
|
|
cur_CSECT_class:= '[RO]';
|
|
|
|
s:= tai_section(hp).name^;
|
|
if s = '' then
|
|
InternalError(2004101001); {Nameless sections should not occur on MPW}
|
|
ReplaceForbiddenChars(s);
|
|
cur_CSECT_name:= s;
|
|
|
|
writer.AsmLn;
|
|
writer.AsmWriteLn(#9+secnames[tai_section(hp).sectype]+' '+cur_CSECT_name+cur_CSECT_class);
|
|
end;
|
|
LastSecType:=tai_section(hp).sectype;
|
|
end;
|
|
ait_align:
|
|
begin
|
|
case tai_align(hp).aligntype of
|
|
1:writer.AsmWriteLn(#9'align 0');
|
|
2:writer.AsmWriteLn(#9'align 1');
|
|
4:writer.AsmWriteLn(#9'align 2');
|
|
otherwise internalerror(2002110302);
|
|
end;
|
|
end;
|
|
ait_datablock: {Storage for global variables.}
|
|
begin
|
|
s:= tai_datablock(hp).sym.name;
|
|
|
|
WriteDataHeader(s, tai_datablock(hp).is_global, false);
|
|
if not macos_direct_globals then
|
|
begin
|
|
writer.AsmWriteLn(#9'ds.b '+tostr(tai_datablock(hp).size));
|
|
end
|
|
else
|
|
begin
|
|
writer.AsmWriteLn(PadTabs(s+':',#0)+'ds.b '+tostr(tai_datablock(hp).size));
|
|
{TODO: ? PadTabs(s,#0) }
|
|
end;
|
|
end;
|
|
|
|
ait_const:
|
|
begin
|
|
consttype:=tai_const(hp).consttype;
|
|
case consttype of
|
|
aitconst_128bit:
|
|
begin
|
|
internalerror(200404291);
|
|
end;
|
|
aitconst_64bit:
|
|
begin
|
|
if assigned(tai_const(hp).sym) then
|
|
internalerror(200404292);
|
|
writer.AsmWrite(ait_const2str[aitconst_32bit]);
|
|
if target_info.endian = endian_little then
|
|
begin
|
|
writer.AsmWrite(tostr(longint(lo(tai_const(hp).value))));
|
|
writer.AsmWrite(',');
|
|
writer.AsmWrite(tostr(longint(hi(tai_const(hp).value))));
|
|
end
|
|
else
|
|
begin
|
|
writer.AsmWrite(tostr(longint(hi(tai_const(hp).value))));
|
|
writer.AsmWrite(',');
|
|
writer.AsmWrite(tostr(longint(lo(tai_const(hp).value))));
|
|
end;
|
|
writer.AsmLn;
|
|
end;
|
|
|
|
aitconst_uleb128bit,
|
|
aitconst_sleb128bit,
|
|
aitconst_32bit,
|
|
aitconst_16bit,
|
|
aitconst_8bit,
|
|
aitconst_rva_symbol :
|
|
begin
|
|
writer.AsmWrite(ait_const2str[consttype]);
|
|
l:=0;
|
|
repeat
|
|
if assigned(tai_const(hp).sym) then
|
|
begin
|
|
if assigned(tai_const(hp).endsym) then
|
|
begin
|
|
if (tai_const(hp).endsym.typ = AT_FUNCTION) and use_PR then
|
|
writer.AsmWrite('.');
|
|
|
|
s:=tai_const(hp).endsym.name;
|
|
ReplaceForbiddenChars(s);
|
|
writer.AsmWrite(s);
|
|
inc(l,length(s));
|
|
|
|
if tai_const(hp).endsym.typ = AT_FUNCTION then
|
|
begin
|
|
if use_PR then
|
|
writer.AsmWrite('[PR]')
|
|
else
|
|
writer.AsmWrite('[DS]');
|
|
end;
|
|
|
|
writer.AsmWrite('-');
|
|
inc(l,5); {Approx 5 extra, no need to be exactly}
|
|
end;
|
|
|
|
if (tai_const(hp).sym.typ = AT_FUNCTION) and use_PR then
|
|
writer.AsmWrite('.');
|
|
|
|
s:= tai_const(hp).sym.name;
|
|
ReplaceForbiddenChars(s);
|
|
writer.AsmWrite(s);
|
|
inc(l,length(s));
|
|
|
|
if tai_const(hp).sym.typ = AT_FUNCTION then
|
|
begin
|
|
if use_PR then
|
|
writer.AsmWrite('[PR]')
|
|
else
|
|
writer.AsmWrite('[DS]');
|
|
end;
|
|
inc(l,5); {Approx 5 extra, no need to be exactly}
|
|
|
|
if tai_const(hp).value > 0 then
|
|
s:= '+'+tostr(tai_const(hp).value)
|
|
else if tai_const(hp).value < 0 then
|
|
s:= '-'+tostr(tai_const(hp).value)
|
|
else
|
|
s:= '';
|
|
if s<>'' then
|
|
begin
|
|
writer.AsmWrite(s);
|
|
inc(l,length(s));
|
|
end;
|
|
end
|
|
else
|
|
begin
|
|
s:= tostr(tai_const(hp).value);
|
|
writer.AsmWrite(s);
|
|
inc(l,length(s));
|
|
end;
|
|
|
|
if (l>line_length) or
|
|
(hp.next=nil) or
|
|
(tai(hp.next).typ<>ait_const) or
|
|
(tai_const(hp.next).consttype<>consttype) then
|
|
break;
|
|
hp:=tai(hp.next);
|
|
writer.AsmWrite(',');
|
|
until false;
|
|
writer.AsmLn;
|
|
end;
|
|
end;
|
|
end;
|
|
|
|
ait_realconst:
|
|
begin
|
|
WriteRealConstAsBytes(tai_realconst(hp),#9'dc.b'#9,do_line);
|
|
end;
|
|
|
|
ait_string:
|
|
begin
|
|
{NOTE When a single quote char is encountered, it is
|
|
replaced with a numeric ascii value. It could also
|
|
have been replaced with the escape seq of double quotes.
|
|
Backslash seems to be used as an escape char, although
|
|
this is not mentioned in the PPCAsm documentation.}
|
|
counter := 0;
|
|
lines := tai_string(hp).len div line_length;
|
|
{ separate lines in different parts }
|
|
if tai_string(hp).len > 0 then
|
|
begin
|
|
for j := 0 to lines-1 do
|
|
begin
|
|
writer.AsmWrite(#9'dc.b'#9);
|
|
quoted:=false;
|
|
for i:=counter to counter+line_length-1 do
|
|
begin
|
|
{ it is an ascii character. }
|
|
if (ord(tai_string(hp).str[i])>31) and
|
|
(ord(tai_string(hp).str[i])<128) and
|
|
(tai_string(hp).str[i]<>'''') and
|
|
(tai_string(hp).str[i]<>'\') then
|
|
begin
|
|
if not(quoted) then
|
|
begin
|
|
if i>counter then
|
|
writer.AsmWrite(',');
|
|
writer.AsmWrite('''');
|
|
end;
|
|
writer.AsmWrite(tai_string(hp).str[i]);
|
|
quoted:=true;
|
|
end { if > 31 and < 128 and ord('"') }
|
|
else
|
|
begin
|
|
if quoted then
|
|
writer.AsmWrite('''');
|
|
if i>counter then
|
|
writer.AsmWrite(',');
|
|
quoted:=false;
|
|
writer.AsmWrite(tostr(ord(tai_string(hp).str[i])));
|
|
end;
|
|
end; { end for i:=0 to... }
|
|
if quoted then writer.AsmWrite('''');
|
|
writer.AsmLn;
|
|
counter := counter+line_length;
|
|
end; { end for j:=0 ... }
|
|
|
|
{ do last line of lines }
|
|
if counter < tai_string(hp).len then
|
|
writer.AsmWrite(#9'dc.b'#9);
|
|
quoted:=false;
|
|
for i:=counter to tai_string(hp).len-1 do
|
|
begin
|
|
{ it is an ascii character. }
|
|
if (ord(tai_string(hp).str[i])>31) and
|
|
(ord(tai_string(hp).str[i])<128) and
|
|
(tai_string(hp).str[i]<>'''') and
|
|
(tai_string(hp).str[i]<>'\') then
|
|
begin
|
|
if not(quoted) then
|
|
begin
|
|
if i>counter then
|
|
writer.AsmWrite(',');
|
|
writer.AsmWrite('''');
|
|
end;
|
|
writer.AsmWrite(tai_string(hp).str[i]);
|
|
quoted:=true;
|
|
end { if > 31 and < 128 and " }
|
|
else
|
|
begin
|
|
if quoted then
|
|
writer.AsmWrite('''');
|
|
if i>counter then
|
|
writer.AsmWrite(',');
|
|
quoted:=false;
|
|
writer.AsmWrite(tostr(ord(tai_string(hp).str[i])));
|
|
end;
|
|
end; { end for i:=0 to... }
|
|
if quoted then
|
|
writer.AsmWrite('''');
|
|
end;
|
|
writer.AsmLn;
|
|
end;
|
|
ait_label:
|
|
begin
|
|
if tai_label(hp).labsym.is_used then
|
|
begin
|
|
s:= tai_label(hp).labsym.name;
|
|
if s[1] = '@' then
|
|
begin
|
|
ReplaceForbiddenChars(s);
|
|
//Local labels:
|
|
writer.AsmWriteLn(s+':')
|
|
end
|
|
else
|
|
begin
|
|
//Procedure entry points:
|
|
if not macos_direct_globals then
|
|
begin
|
|
WriteDataHeader(s, tai_label(hp).labsym.bind in [AB_GLOBAL,AB_PRIVATE_EXTERN], true);
|
|
end
|
|
else
|
|
begin
|
|
ReplaceForbiddenChars(s);
|
|
writer.AsmWrite(#9'csect'#9); writer.AsmWrite(s);
|
|
writer.AsmWriteLn('[TC]');
|
|
|
|
writer.AsmWriteLn(PadTabs(s+':',#0));
|
|
end;
|
|
end;
|
|
end;
|
|
end;
|
|
ait_symbol:
|
|
begin
|
|
if tai_symbol(hp).sym.typ=AT_FUNCTION then
|
|
WriteProcedureHeader(hp)
|
|
else if tai_symbol(hp).sym.typ=AT_DATA then
|
|
begin
|
|
s:= tai_symbol(hp).sym.name;
|
|
WriteDataHeader(s, tai_symbol(hp).is_global, true);
|
|
if macos_direct_globals then
|
|
begin
|
|
writer.AsmWrite(s);
|
|
writer.AsmWriteLn(':');
|
|
end;
|
|
end
|
|
else
|
|
InternalError(2003071301);
|
|
end;
|
|
ait_symbol_end:
|
|
;
|
|
ait_instruction:
|
|
WriteInstruction(hp);
|
|
ait_stab,
|
|
ait_force_line,
|
|
ait_function_name : ;
|
|
ait_cutobject :
|
|
begin
|
|
InternalError(2004101101); {Smart linking is done transparently by the MPW linker.}
|
|
end;
|
|
ait_marker :
|
|
begin
|
|
if tai_marker(hp).kind=mark_NoLineInfoStart then
|
|
inc(InlineLevel)
|
|
else if tai_marker(hp).kind=mark_NoLineInfoEnd then
|
|
dec(InlineLevel);
|
|
end;
|
|
ait_directive :
|
|
if tai_directive(hp).directive=asd_cpu then
|
|
begin
|
|
writer.AsmWrite(asminfo^.comment+' CPU ');
|
|
if tai_directive(hp).name<>'' then
|
|
writer.AsmWrite(tai_directive(hp).name);
|
|
writer.AsmLn;
|
|
end
|
|
else
|
|
internalerror(2016022601);
|
|
else
|
|
internalerror(2002110303);
|
|
end;
|
|
hp:=tai(hp.next);
|
|
end;
|
|
end;
|
|
|
|
var
|
|
currentasmlist : TExternalAssembler;
|
|
|
|
procedure writeexternal(p:tasmsymbol);
|
|
|
|
var
|
|
s:string;
|
|
replaced: boolean;
|
|
|
|
begin
|
|
if tasmsymbol(p).bind=AB_EXTERNAL then
|
|
begin
|
|
//Writeln('ZZZ ',p.name,' ',p.classname,' ',Ord(tasmsymbol(p).typ));
|
|
s:= p.name;
|
|
replaced:= ReplaceForbiddenChars(s);
|
|
|
|
with currentasmlist do
|
|
case tasmsymbol(p).typ of
|
|
AT_FUNCTION:
|
|
begin
|
|
writer.AsmWrite(#9'import'#9'.');
|
|
writer.AsmWrite(s);
|
|
if use_PR then
|
|
writer.AsmWrite('[PR]');
|
|
|
|
if replaced then
|
|
begin
|
|
writer.AsmWrite(' <= ''.');
|
|
writer.AsmWrite(p.name);
|
|
if use_PR then
|
|
writer.AsmWrite('[PR]''')
|
|
else
|
|
writer.AsmWrite('''');
|
|
end;
|
|
writer.AsmLn;
|
|
|
|
writer.AsmWrite(#9'import'#9);
|
|
writer.AsmWrite(s);
|
|
writer.AsmWrite('[DS]');
|
|
if replaced then
|
|
begin
|
|
writer.AsmWrite(' <= ''');
|
|
writer.AsmWrite(p.name);
|
|
writer.AsmWrite('[DS]''');
|
|
end;
|
|
writer.AsmLn;
|
|
|
|
writer.AsmWriteLn(#9'toc');
|
|
|
|
writer.AsmWrite(#9'tc'#9);
|
|
writer.AsmWrite(s);
|
|
writer.AsmWrite('[TC],');
|
|
writer.AsmWrite(s);
|
|
writer.AsmWriteLn('[DS]');
|
|
end;
|
|
AT_DATA:
|
|
begin
|
|
writer.AsmWrite(#9'import'#9);
|
|
writer.AsmWrite(s);
|
|
writer.AsmWrite(var_storage_class);
|
|
if replaced then
|
|
begin
|
|
writer.AsmWrite(' <= ''');
|
|
writer.AsmWrite(p.name);
|
|
writer.AsmWrite('''');
|
|
end;
|
|
writer.AsmLn;
|
|
|
|
writer.AsmWriteLn(#9'toc');
|
|
writer.AsmWrite(#9'tc'#9);
|
|
writer.AsmWrite(s);
|
|
writer.AsmWrite('[TC],');
|
|
writer.AsmWrite(s);
|
|
writer.AsmWriteLn(var_storage_class);
|
|
end
|
|
else
|
|
InternalError(2003090901);
|
|
end;
|
|
end;
|
|
end;
|
|
|
|
procedure TPPCMPWAssembler.WriteExternals;
|
|
var
|
|
i : longint;
|
|
begin
|
|
currentasmlist:=self;
|
|
// current_asmdata.asmsymboldict.foreach_static(@writeexternal,nil);
|
|
for i:=0 to current_asmdata.AsmSymbolDict.Count-1 do
|
|
begin
|
|
writeexternal(tasmsymbol(current_asmdata.AsmSymbolDict[i]));
|
|
end;
|
|
end;
|
|
|
|
|
|
function TPPCMPWAssembler.DoAssemble : boolean;
|
|
begin
|
|
DoAssemble:=Inherited DoAssemble;
|
|
end;
|
|
|
|
procedure TPPCMPWAssembler.WriteAsmFileHeader;
|
|
|
|
begin
|
|
writer.AsmWriteLn(#9'string asis'); {Interpret strings just to be the content between the quotes.}
|
|
writer.AsmWriteLn(#9'aligning off'); {We do our own aligning.}
|
|
writer.AsmLn;
|
|
end;
|
|
|
|
procedure TPPCMPWAssembler.WriteAsmList;
|
|
var
|
|
hal : tasmlisttype;
|
|
begin
|
|
{$ifdef EXTDEBUG}
|
|
if assigned(current_module.mainsource) then
|
|
comment(v_info,'Start writing MPW-styled assembler output for '+current_module.mainsource^);
|
|
{$endif}
|
|
|
|
WriteAsmFileHeader;
|
|
WriteExternals;
|
|
|
|
for hal:=low(TasmlistType) to high(TasmlistType) do
|
|
begin
|
|
writer.AsmWriteLn(asminfo^.comment+'Begin asmlist '+AsmListTypeStr[hal]);
|
|
writetree(current_asmdata.asmlists[hal]);
|
|
writer.AsmWriteLn(asminfo^.comment+'End asmlist '+AsmListTypeStr[hal]);
|
|
end;
|
|
|
|
writer.AsmWriteLn(#9'end');
|
|
writer.AsmLn;
|
|
|
|
{$ifdef EXTDEBUG}
|
|
if assigned(current_module.mainsource) then
|
|
comment(v_info,'Done writing MPW-styled assembler output for '+current_module.mainsource^);
|
|
{$endif EXTDEBUG}
|
|
end;
|
|
|
|
{*****************************************************************************
|
|
Initialize
|
|
*****************************************************************************}
|
|
|
|
const
|
|
as_powerpc_mpw_info : tasminfo =
|
|
(
|
|
id : as_powerpc_mpw;
|
|
idtxt : 'MPW';
|
|
asmbin : 'PPCAsm';
|
|
asmcmd : '-case on $ASM $EXTRAOPT -o $OBJ';
|
|
supported_targets : [system_powerpc_macos];
|
|
flags : [af_needar,af_smartlink_sections,af_labelprefix_only_inside_procedure];
|
|
labelprefix : '@';
|
|
comment : '; ';
|
|
dollarsign: 's';
|
|
);
|
|
|
|
initialization
|
|
RegisterAssembler(as_powerpc_mpw_info,TPPCMPWAssembler);
|
|
end.
|