mirror of
https://gitlab.com/freepascal.org/fpc/source.git
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2d45ea43af
'db 09bh' (on the previous line) for the fwait prefixed 8087 instructions in the nasm assembly output, because it looks prettier this way :) git-svn-id: trunk@26185 -
1305 lines
42 KiB
ObjectPascal
1305 lines
42 KiB
ObjectPascal
{
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Copyright (c) 1998-2002 by Florian Klaempfl
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This unit implements an asmoutput class for the Nasm assembler with
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Intel syntax for the i386+
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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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unit agx86nsm;
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{$i fpcdefs.inc}
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interface
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uses
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cpubase,
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aasmbase,aasmtai,aasmdata,aasmcpu,assemble,cgutils;
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type
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{ T386NasmAssembler }
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T386NasmAssembler = class(texternalassembler)
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private
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function CodeSectionName: string;
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procedure WriteReference(var ref : treference);
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procedure WriteOper(const o:toper;s : topsize; opcode: tasmop;ops:longint;dest : boolean);
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procedure WriteOper_jmp(const o:toper; op : tasmop);
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procedure WriteSection(atype:TAsmSectiontype;const aname:string);
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public
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procedure WriteTree(p:TAsmList);override;
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procedure WriteAsmList;override;
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procedure WriteExternals;
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procedure WriteSmartExternals;
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procedure WriteHeader;
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end;
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implementation
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uses
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cutils,globtype,globals,systems,cclasses,
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fmodule,finput,verbose,cpuinfo,cgbase
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;
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type
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{$ifdef cpuextended}
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t80bitarray = array[0..9] of byte;
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{$endif cpuextended}
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t64bitarray = array[0..7] of byte;
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t32bitarray = array[0..3] of byte;
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const
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line_length = 64;
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nasm_regname_table : array[tregisterindex] of string[7] = (
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{r386nasm.inc contains the Nasm name of each register.}
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{$if defined(x86_64)}
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{$fatal nasm support not yet implemented for x86_64 }
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{$elseif defined(i386)}
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{$i r386nasm.inc}
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{$elseif defined(i8086)}
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{$i r8086nasm.inc}
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{$endif}
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);
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function nasm_regname(r:Tregister):string;
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var
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p : tregisterindex;
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begin
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p:=findreg_by_number(r);
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if p<>0 then
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result:=nasm_regname_table[p]
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else
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result:=generic_regname(r);
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end;
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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 : longint;
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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 : longint;
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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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function extended2str(e : extended) : string;
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var
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hs : string;
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p : longint;
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begin
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str(e,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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extended2str:=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 comp2str(d : bestreal) : string;
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type
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pdouble = ^double;
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var
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c : comp;
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dd : pdouble;
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begin
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c:=comp(d);
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dd:=pdouble(@c); { this makes a bitwise copy of c into a double }
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comp2str:=double2str(dd^);
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end;
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function sizestr(s:topsize;dest:boolean):string;
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begin
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case s of
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S_B : sizestr:='byte ';
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S_W : sizestr:='word ';
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S_L : sizestr:='dword ';
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S_Q : sizestr:='qword ';
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S_IS : sizestr:='word ';
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S_IL : sizestr:='dword ';
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S_IQ : sizestr:='qword ';
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S_FS : sizestr:='dword ';
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S_FL : sizestr:='qword ';
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S_FX : sizestr:='tword ';
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S_BW : if dest then
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sizestr:='word '
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else
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sizestr:='byte ';
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S_BL : if dest then
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sizestr:='dword '
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else
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sizestr:='byte ';
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S_WL : if dest then
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sizestr:='dword '
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else
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sizestr:='word ';
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else { S_NO }
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sizestr:='';
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end;
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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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type
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PExternChain = ^TExternChain;
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TExternChain = Record
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psym : pshortstring;
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is_defined : boolean;
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next : PExternChain;
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end;
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const
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FEC : PExternChain = nil;
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procedure AddSymbol(symname : string; defined : boolean);
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var
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EC : PExternChain;
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begin
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EC:=FEC;
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while assigned(EC) do
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begin
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if EC^.psym^=symname then
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begin
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if defined then
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EC^.is_defined:=true;
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exit;
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end;
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EC:=EC^.next;
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end;
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New(EC);
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EC^.next:=FEC;
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FEC:=EC;
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FEC^.psym:=stringdup(symname);
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FEC^.is_defined := defined;
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end;
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procedure FreeExternChainList;
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var
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EC : PExternChain;
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begin
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EC:=FEC;
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while assigned(EC) do
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begin
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FEC:=EC^.next;
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stringdispose(EC^.psym);
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Dispose(EC);
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EC:=FEC;
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end;
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end;
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{****************************************************************************
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T386NasmAssembler
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****************************************************************************}
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function T386NasmAssembler.CodeSectionName: string;
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begin
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{$ifdef i8086}
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if current_settings.x86memorymodel in x86_far_code_models then
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result:=current_module.modulename^ + '_TEXT'
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else
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{$endif}
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result:='.text';
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end;
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procedure T386NasmAssembler.WriteReference(var ref : treference);
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var
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first : boolean;
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begin
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with ref do
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begin
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AsmWrite('[');
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first:=true;
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if (segment<>NR_NO) then
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AsmWrite(nasm_regname(segment)+':');
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if assigned(symbol) then
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begin
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AsmWrite(symbol.name);
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if SmartAsm then
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AddSymbol(symbol.name,false);
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first:=false;
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end;
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if (base<>NR_NO) then
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begin
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if not(first) then
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AsmWrite('+')
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else
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first:=false;
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AsmWrite(nasm_regname(base))
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end;
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if (index<>NR_NO) then
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begin
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if not(first) then
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AsmWrite('+')
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else
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first:=false;
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AsmWrite(nasm_regname(index));
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if scalefactor<>0 then
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AsmWrite('*'+tostr(scalefactor));
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end;
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if offset<0 then
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begin
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AsmWrite(tostr(offset));
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first:=false;
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end
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else if (offset>0) then
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begin
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AsmWrite('+'+tostr(offset));
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first:=false;
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end;
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if first then
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AsmWrite('0');
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AsmWrite(']');
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end;
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end;
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procedure T386NasmAssembler.WriteOper(const o:toper;s : topsize; opcode: tasmop;ops:longint;dest : boolean);
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begin
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case o.typ of
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top_reg :
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AsmWrite(nasm_regname(o.reg));
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top_const :
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begin
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if (ops=1) and (opcode<>A_RET) then
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AsmWrite(sizestr(s,dest));
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AsmWrite(tostr(longint(o.val)));
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end;
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top_ref :
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begin
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if o.ref^.refaddr=addr_no then
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begin
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if not ((opcode = A_LEA) or (opcode = A_LGS) or
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(opcode = A_LSS) or (opcode = A_LFS) or
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(opcode = A_LES) or (opcode = A_LDS) or
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// (opcode = A_SHR) or (opcode = A_SHL) or
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// (opcode = A_SAR) or (opcode = A_SAL) or
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(opcode = A_OUT) or (opcode = A_IN)) then
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AsmWrite(sizestr(s,dest));
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WriteReference(o.ref^);
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end
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{$ifdef i8086}
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else if o.ref^.refaddr=addr_dgroup then
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begin
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AsmWrite('dgroup');
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end
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{$endif i8086}
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else
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begin
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{$ifdef x86_64}
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asmwrite('qword ');
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{$endif}
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{$ifdef i386}
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asmwrite('dword ');
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{$endif i386}
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{$ifdef i8086}
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if o.ref^.refaddr=addr_far then
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asmwrite('far ')
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else if o.ref^.refaddr=addr_seg then
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asmwrite('SEG ')
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else
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asmwrite('word ');
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{$endif i8086}
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if assigned(o.ref^.symbol) then
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begin
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if SmartAsm then
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AddSymbol(o.ref^.symbol.name,false);
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asmwrite(o.ref^.symbol.name);
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if o.ref^.offset=0 then
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exit;
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end;
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if o.ref^.offset>0 then
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asmwrite('+');
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asmwrite(tostr(o.ref^.offset));
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end;
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end;
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else
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internalerror(10001);
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end;
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end;
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procedure T386NasmAssembler.WriteOper_jmp(const o:toper; op : tasmop);
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begin
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case o.typ of
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top_reg :
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AsmWrite(nasm_regname(o.reg));
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top_ref :
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if o.ref^.refaddr in [addr_no{$ifdef i8086},addr_far_ref{$endif}] then
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begin
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{$ifdef i8086}
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if o.ref^.refaddr=addr_far_ref then
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AsmWrite('far ');
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{$endif i8086}
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WriteReference(o.ref^);
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end
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else
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begin
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{ NEAR forces NASM to emit near jumps, which are 386+ }
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{$ifndef i8086}
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if not(
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(op=A_JCXZ) or (op=A_JECXZ) or
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{$ifdef x86_64}
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(op=A_JRCXZ) or
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{$endif x86_64}
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(op=A_LOOP) or (op=A_LOOPE) or
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(op=A_LOOPNE) or (op=A_LOOPNZ) or
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(op=A_LOOPZ)
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) then
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AsmWrite('NEAR ');
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{$endif i8086}
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{$ifdef i8086}
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if o.ref^.refaddr=addr_far then
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AsmWrite('far ');
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{$endif i8086}
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AsmWrite(o.ref^.symbol.name);
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if SmartAsm then
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AddSymbol(o.ref^.symbol.name,false);
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if o.ref^.offset>0 then
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AsmWrite('+'+tostr(o.ref^.offset))
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else
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if o.ref^.offset<0 then
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AsmWrite(tostr(o.ref^.offset));
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end;
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top_const :
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AsmWrite(tostr(aint(o.val)));
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else
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internalerror(10001);
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end;
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end;
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const
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ait_const2str : array[aitconst_128bit..aitconst_64bit_unaligned] of string[30]=(
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#9'FIXME_128BIT'#9,#9'FIXME_64BIT'#9,#9'DD'#9,#9'DW'#9,#9'DB'#9,
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#9'FIXME_SLEB128BIT'#9,#9'FIXME_ULEB128BIT'#9,
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#9'RVA'#9,#9'SECREL32'#9,#9'FIXME_darwin_dwarf_delta64'#9,
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#9'FIXME_darwin_dwarf_delta32'#9,#9'FIXME_half16bit'#9,
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#9'DW'#9,#9'DD'#9,#9'FIXME_64BIT_UNALIGNED'#9
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);
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procedure T386NasmAssembler.WriteSection(atype:TAsmSectiontype;const aname:string);
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const
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secnames : array[TAsmSectiontype] of string[length('__DATA, __datacoal_nt,coalesced')] = ('','',
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'.text',
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'.data',
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'.data',
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'.rodata',
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'.bss',
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'.tbss',
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'.pdata',
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'.text','.data','.data','.data','.data',
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'.stab',
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'.stabstr',
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'.idata2','.idata4','.idata5','.idata6','.idata7','.edata',
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'.eh_frame',
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'.debug_frame','.debug_info','.debug_line','.debug_abbrev',
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'.fpc',
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'',
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'.init',
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'.fini',
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'.objc_class',
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'.objc_meta_class',
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'.objc_cat_cls_meth',
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'.objc_cat_inst_meth',
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'.objc_protocol',
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'.objc_string_object',
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'.objc_cls_meth',
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'.objc_inst_meth',
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'.objc_cls_refs',
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'.objc_message_refs',
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'.objc_symbols',
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'.objc_category',
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|
'.objc_class_vars',
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|
'.objc_instance_vars',
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|
'.objc_module_info',
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|
'.objc_class_names',
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'.objc_meth_var_types',
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'.objc_meth_var_names',
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'.objc_selector_strs',
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'.objc_protocol_ext',
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'.objc_class_ext',
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'.objc_property',
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'.objc_image_info',
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'.objc_cstring_object',
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'.objc_sel_fixup',
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'__DATA,__objc_data',
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'__DATA,__objc_const',
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'.objc_superrefs',
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'__DATA, __datacoal_nt,coalesced',
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'.objc_classlist',
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'.objc_nlclasslist',
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'.objc_catlist',
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'.obcj_nlcatlist',
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'.objc_protolist'
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);
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begin
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AsmLn;
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AsmWrite('SECTION ');
|
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{ go32v2 stub only loads .text and .data sections, and allocates space for .bss.
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|
Thus, data which normally goes into .rodata and .rodata_norel sections must
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end up in .data section }
|
|
if (atype in [sec_rodata,sec_rodata_norel]) and
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(target_info.system=system_i386_go32v2) then
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AsmWrite('.data')
|
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else if secnames[atype]='.text' then
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AsmWrite(CodeSectionName)
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else
|
|
AsmWrite(secnames[atype]);
|
|
if create_smartlink_sections and
|
|
(atype<>sec_bss) and
|
|
(aname<>'') then
|
|
begin
|
|
AsmWrite('.');
|
|
AsmWrite(aname);
|
|
end;
|
|
AsmLn;
|
|
LasTSecType:=atype;
|
|
end;
|
|
|
|
procedure T386NasmAssembler.WriteTree(p:TAsmList);
|
|
{$ifdef cpuextended}
|
|
type
|
|
t80bitarray = array[0..9] of byte;
|
|
{$endif cpuextended}
|
|
var
|
|
s : string;
|
|
hp : tai;
|
|
counter,
|
|
lines,
|
|
i,j,l : longint;
|
|
InlineLevel : longint;
|
|
consttype : taiconst_type;
|
|
do_line,
|
|
quoted : boolean;
|
|
co : comp;
|
|
sin : single;
|
|
d : double;
|
|
{$ifdef cpuextended}
|
|
e : extended;
|
|
{$endif cpuextended}
|
|
fixed_opcode: TAsmOp;
|
|
prefix : string;
|
|
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]));
|
|
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) then
|
|
WriteSourceLine(hp as tailineinfo);
|
|
end;
|
|
|
|
case hp.typ of
|
|
ait_comment :
|
|
Begin
|
|
AsmWrite(target_asm.comment);
|
|
AsmWritePChar(tai_comment(hp).str);
|
|
AsmLn;
|
|
End;
|
|
|
|
ait_regalloc :
|
|
begin
|
|
if (cs_asm_regalloc in current_settings.globalswitches) then
|
|
AsmWriteLn(#9#9+target_asm.comment+'Register '+nasm_regname(tai_regalloc(hp).reg)+' '+
|
|
regallocstr[tai_regalloc(hp).ratype]);
|
|
end;
|
|
|
|
ait_tempalloc :
|
|
begin
|
|
if (cs_asm_tempalloc in current_settings.globalswitches) then
|
|
WriteTempalloc(tai_tempalloc(hp));
|
|
end;
|
|
|
|
ait_section :
|
|
begin
|
|
if tai_section(hp).sectype<>sec_none then
|
|
WriteSection(tai_section(hp).sectype,tai_section(hp).name^);
|
|
LasTSecType:=tai_section(hp).sectype;
|
|
end;
|
|
|
|
ait_align :
|
|
begin
|
|
{ nasm gives warnings when it finds align in bss as it
|
|
wants to store data }
|
|
if (lastsectype<>sec_bss) and
|
|
(tai_align(hp).aligntype>1) then
|
|
AsmWriteLn(#9'ALIGN '+tostr(tai_align(hp).aligntype));
|
|
end;
|
|
|
|
ait_datablock :
|
|
begin
|
|
if tai_datablock(hp).is_global or SmartAsm then
|
|
begin
|
|
AsmWrite(#9'GLOBAL ');
|
|
AsmWriteLn(tai_datablock(hp).sym.name);
|
|
end;
|
|
AsmWrite(PadTabs(tai_datablock(hp).sym.name,':'));
|
|
if SmartAsm then
|
|
AddSymbol(tai_datablock(hp).sym.name,true);
|
|
AsmWriteLn('RESB'#9+tostr(tai_datablock(hp).size));
|
|
end;
|
|
|
|
ait_const:
|
|
begin
|
|
consttype:=tai_const(hp).consttype;
|
|
case consttype of
|
|
aitconst_64bit,
|
|
aitconst_64bit_unaligned:
|
|
begin
|
|
if assigned(tai_const(hp).sym) then
|
|
internalerror(200404292);
|
|
AsmWrite(ait_const2str[aitconst_32bit]);
|
|
AsmWrite(tostr(longint(lo(tai_const(hp).value))));
|
|
AsmWrite(',');
|
|
AsmWrite(tostr(longint(hi(tai_const(hp).value))));
|
|
AsmLn;
|
|
end;
|
|
aitconst_uleb128bit,
|
|
aitconst_sleb128bit,
|
|
aitconst_128bit:
|
|
begin
|
|
end;
|
|
{$ifdef i8086}
|
|
aitconst_farptr:
|
|
begin
|
|
AsmWrite(ait_const2str[aitconst_16bit]);
|
|
if assigned(tai_const(hp).sym) then
|
|
begin
|
|
if SmartAsm then
|
|
AddSymbol(tai_const(hp).sym.name,false);
|
|
AsmWrite(tai_const(hp).sym.name);
|
|
if tai_const(hp).value<>0 then
|
|
AsmWrite(tostr_with_plus(tai_const(hp).value));
|
|
AsmLn;
|
|
AsmWrite(ait_const2str[aitconst_16bit]);
|
|
AsmWrite('SEG ');
|
|
AsmWrite(tai_const(hp).sym.name);
|
|
end
|
|
else
|
|
AsmWrite(tostr(lo(longint(tai_const(hp).value)))+','+
|
|
tostr(hi(longint(tai_const(hp).value))));
|
|
AsmLn;
|
|
end;
|
|
{$endif i8086}
|
|
aitconst_32bit,
|
|
aitconst_16bit,
|
|
aitconst_8bit,
|
|
aitconst_rva_symbol,
|
|
aitconst_secrel32_symbol,
|
|
aitconst_16bit_unaligned,
|
|
aitconst_32bit_unaligned:
|
|
begin
|
|
AsmWrite(ait_const2str[tai_const(hp).consttype]);
|
|
l:=0;
|
|
repeat
|
|
if assigned(tai_const(hp).sym) then
|
|
begin
|
|
if SmartAsm then
|
|
begin
|
|
AddSymbol(tai_const(hp).sym.name,false);
|
|
if assigned(tai_const(hp).endsym) then
|
|
AddSymbol(tai_const(hp).endsym.name,false);
|
|
end;
|
|
if assigned(tai_const(hp).endsym) then
|
|
s:=tai_const(hp).endsym.name+'-'+tai_const(hp).sym.name
|
|
else
|
|
s:=tai_const(hp).sym.name;
|
|
if tai_const(hp).value<>0 then
|
|
s:=s+tostr_with_plus(tai_const(hp).value);
|
|
end
|
|
else
|
|
s:=tostr(tai_const(hp).value);
|
|
AsmWrite(s);
|
|
inc(l,length(s));
|
|
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);
|
|
AsmWrite(',');
|
|
until false;
|
|
AsmLn;
|
|
end;
|
|
else
|
|
internalerror(200704252);
|
|
end;
|
|
end;
|
|
|
|
{$if defined(cpuextended) and defined(FPC_HAS_TYPE_EXTENDED)}
|
|
ait_real_80bit :
|
|
begin
|
|
if do_line then
|
|
AsmWriteLn(target_asm.comment+'value: '+extended2str(tai_real_80bit(hp).value));
|
|
{ Make sure e is a extended type, bestreal could be
|
|
a different type (bestreal) !! (PFV) }
|
|
e:=tai_real_80bit(hp).value;
|
|
AsmWrite(#9#9'DB'#9);
|
|
for i:=0 to 9 do
|
|
begin
|
|
if i<>0 then
|
|
AsmWrite(',');
|
|
AsmWrite(tostr(t80bitarray(e)[i]));
|
|
end;
|
|
for i:=11 to tai_real_80bit(hp).savesize do
|
|
AsmWrite(',0');
|
|
AsmLn;
|
|
end;
|
|
{$else cpuextended}
|
|
ait_real_80bit :
|
|
AsmWriteLn(#9#9'DT'#9+extended2str(tai_real_80bit(hp).value));
|
|
{$endif cpuextended}
|
|
|
|
// ait_real_64bit :
|
|
// AsmWriteLn(#9#9'DQ'#9+double2str(tai_real_64bit(hp).value));
|
|
ait_real_64bit :
|
|
begin
|
|
if do_line then
|
|
AsmWriteLn(target_asm.comment+'value: '+double2str(tai_real_64bit(hp).value));
|
|
d:=tai_real_64bit(hp).value;
|
|
{ swap the values to correct endian if required }
|
|
if source_info.endian <> target_info.endian then
|
|
swap64bitarray(t64bitarray(d));
|
|
AsmWrite(#9#9'DB'#9);
|
|
{$ifdef arm}
|
|
if tai_real_64bit(hp).formatoptions=fo_hiloswapped then
|
|
begin
|
|
for i:=4 to 7 do
|
|
begin
|
|
if i<>4 then
|
|
AsmWrite(',');
|
|
AsmWrite(tostr(t64bitarray(d)[i]));
|
|
end;
|
|
for i:=0 to 3 do
|
|
begin
|
|
AsmWrite(',');
|
|
AsmWrite(tostr(t64bitarray(d)[i]));
|
|
end;
|
|
end
|
|
else
|
|
{$endif arm}
|
|
begin
|
|
for i:=0 to 7 do
|
|
begin
|
|
if i<>0 then
|
|
AsmWrite(',');
|
|
AsmWrite(tostr(t64bitarray(d)[i]));
|
|
end;
|
|
end;
|
|
AsmLn;
|
|
end;
|
|
// ait_real_32bit :
|
|
// AsmWriteLn(#9#9'DD'#9+single2str(tai_real_32bit(hp).value));
|
|
ait_real_32bit :
|
|
begin
|
|
if do_line then
|
|
AsmWriteLn(target_asm.comment+'value: '+single2str(tai_real_32bit(hp).value));
|
|
sin:=tai_real_32bit(hp).value;
|
|
{ swap the values to correct endian if required }
|
|
if source_info.endian <> target_info.endian then
|
|
swap32bitarray(t32bitarray(sin));
|
|
AsmWrite(#9#9'DB'#9);
|
|
for i:=0 to 3 do
|
|
begin
|
|
if i<>0 then
|
|
AsmWrite(',');
|
|
AsmWrite(tostr(t32bitarray(sin)[i]));
|
|
end;
|
|
AsmLn;
|
|
end;
|
|
// ait_comp_64bit :
|
|
// AsmWriteLn(#9#9'DQ'#9+comp2str(tai_real_80bit(hp).value));
|
|
ait_comp_64bit :
|
|
begin
|
|
if do_line then
|
|
AsmWriteLn(target_asm.comment+'value: '+extended2str(tai_comp_64bit(hp).value));
|
|
AsmWrite(#9#9'DB'#9);
|
|
co:=comp(tai_comp_64bit(hp).value);
|
|
{ swap the values to correct endian if required }
|
|
if source_info.endian <> target_info.endian then
|
|
swap64bitarray(t64bitarray(co));
|
|
for i:=0 to 7 do
|
|
begin
|
|
if i<>0 then
|
|
AsmWrite(',');
|
|
AsmWrite(tostr(t64bitarray(co)[i]));
|
|
end;
|
|
AsmLn;
|
|
end;
|
|
|
|
ait_string :
|
|
begin
|
|
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
|
|
AsmWrite(#9#9'DB'#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]<>'"') then
|
|
begin
|
|
if not(quoted) then
|
|
begin
|
|
if i>counter then
|
|
AsmWrite(',');
|
|
AsmWrite('"');
|
|
end;
|
|
AsmWrite(tai_string(hp).str[i]);
|
|
quoted:=true;
|
|
end { if > 31 and < 128 and ord('"') }
|
|
else
|
|
begin
|
|
if quoted then
|
|
AsmWrite('"');
|
|
if i>counter then
|
|
AsmWrite(',');
|
|
quoted:=false;
|
|
AsmWrite(tostr(ord(tai_string(hp).str[i])));
|
|
end;
|
|
end; { end for i:=0 to... }
|
|
if quoted then AsmWrite('"');
|
|
AsmWrite(target_info.newline);
|
|
inc(counter,line_length);
|
|
end; { end for j:=0 ... }
|
|
{ do last line of lines }
|
|
if counter<tai_string(hp).len then
|
|
AsmWrite(#9#9'DB'#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]<>'"') then
|
|
begin
|
|
if not(quoted) then
|
|
begin
|
|
if i>counter then
|
|
AsmWrite(',');
|
|
AsmWrite('"');
|
|
end;
|
|
AsmWrite(tai_string(hp).str[i]);
|
|
quoted:=true;
|
|
end { if > 31 and < 128 and " }
|
|
else
|
|
begin
|
|
if quoted then
|
|
AsmWrite('"');
|
|
if i>counter then
|
|
AsmWrite(',');
|
|
quoted:=false;
|
|
AsmWrite(tostr(ord(tai_string(hp).str[i])));
|
|
end;
|
|
end; { end for i:=0 to... }
|
|
if quoted then
|
|
AsmWrite('"');
|
|
end;
|
|
AsmLn;
|
|
end;
|
|
|
|
ait_label :
|
|
begin
|
|
if tai_label(hp).labsym.is_used then
|
|
begin
|
|
if SmartAsm and (tai_label(hp).labsym.bind=AB_GLOBAL) then
|
|
begin
|
|
AsmWrite(#9'GLOBAL ');
|
|
AsmWriteLn(tai_label(hp).labsym.name);
|
|
end;
|
|
AsmWriteLn(tai_label(hp).labsym.name+':');
|
|
end;
|
|
if SmartAsm then
|
|
AddSymbol(tai_label(hp).labsym.name,true);
|
|
end;
|
|
|
|
ait_symbol :
|
|
begin
|
|
if tai_symbol(hp).has_value then
|
|
internalerror(2009090803);
|
|
if tai_symbol(hp).is_global or SmartAsm then
|
|
begin
|
|
AsmWrite(#9'GLOBAL ');
|
|
AsmWriteLn(tai_symbol(hp).sym.name);
|
|
end;
|
|
AsmWrite(tai_symbol(hp).sym.name);
|
|
if SmartAsm then
|
|
AddSymbol(tai_symbol(hp).sym.name,true);
|
|
if assigned(hp.next) and not(tai(hp.next).typ in
|
|
[ait_const,
|
|
ait_real_32bit,ait_real_64bit,ait_real_80bit,ait_comp_64bit,ait_string]) then
|
|
AsmWriteLn(':')
|
|
end;
|
|
|
|
ait_symbol_end : ;
|
|
|
|
ait_instruction :
|
|
begin
|
|
fixed_opcode:=taicpu(hp).FixNonCommutativeOpcodes;
|
|
{ We need intel order, no At&t }
|
|
taicpu(hp).SetOperandOrder(op_intel);
|
|
s:='';
|
|
if ((fixed_opcode=A_FADDP) or
|
|
(fixed_opcode=A_FMULP))
|
|
and (taicpu(hp).ops=0) then
|
|
begin
|
|
taicpu(hp).allocate_oper(2);
|
|
taicpu(hp).oper[0]^.typ:=top_reg;
|
|
taicpu(hp).oper[0]^.reg:=NR_ST1;
|
|
taicpu(hp).oper[1]^.typ:=top_reg;
|
|
taicpu(hp).oper[1]^.reg:=NR_ST;
|
|
end;
|
|
if fixed_opcode=A_FWAIT then
|
|
AsmWriteln(#9#9'DB'#9'09bh')
|
|
else
|
|
begin
|
|
prefix:='';
|
|
{$ifdef i8086}
|
|
{ nickysn note: I don't know if the 187 requires FWAIT before
|
|
every instruction like the 8087, so I'm including it just in case }
|
|
if (current_settings.cputype<=cpu_186) and
|
|
requires_fwait_on_8087(fixed_opcode) then
|
|
prefix:='wait '+prefix;
|
|
{$endif i8086}
|
|
{$ifndef i8086}
|
|
{ We need to explicitely set
|
|
word prefix to get selectors
|
|
to be pushed in 2 bytes PM }
|
|
if (taicpu(hp).opsize=S_W) and
|
|
((fixed_opcode=A_PUSH) or
|
|
(fixed_opcode=A_POP)) and
|
|
(taicpu(hp).oper[0]^.typ=top_reg) and
|
|
(is_segment_reg(taicpu(hp).oper[0]^.reg)) then
|
|
AsmWriteln(#9#9'DB'#9'066h');
|
|
{$endif not i8086}
|
|
AsmWrite(#9#9+prefix+std_op2str[fixed_opcode]+cond2str[taicpu(hp).condition]);
|
|
if taicpu(hp).ops<>0 then
|
|
begin
|
|
if is_calljmp(fixed_opcode) then
|
|
begin
|
|
AsmWrite(#9);
|
|
WriteOper_jmp(taicpu(hp).oper[0]^,fixed_opcode);
|
|
end
|
|
else
|
|
begin
|
|
for i:=0 to taicpu(hp).ops-1 do
|
|
begin
|
|
if i=0 then
|
|
AsmWrite(#9)
|
|
else
|
|
AsmWrite(',');
|
|
WriteOper(taicpu(hp).oper[i]^,taicpu(hp).opsize,fixed_opcode,taicpu(hp).ops,(i=2));
|
|
end;
|
|
end;
|
|
end;
|
|
AsmLn;
|
|
end;
|
|
end;
|
|
|
|
ait_stab,
|
|
ait_force_line,
|
|
ait_function_name : ;
|
|
|
|
ait_cutobject :
|
|
begin
|
|
if SmartAsm then
|
|
begin
|
|
{ only reset buffer if nothing has changed }
|
|
if AsmSize=AsmStartSize then
|
|
AsmClear
|
|
else
|
|
begin
|
|
if SmartAsm then
|
|
begin
|
|
WriteSmartExternals;
|
|
FreeExternChainList;
|
|
end;
|
|
AsmClose;
|
|
DoAssemble;
|
|
AsmCreate(tai_cutobject(hp).place);
|
|
WriteHeader;
|
|
end;
|
|
{ avoid empty files }
|
|
while assigned(hp.next) and (tai(hp.next).typ in [ait_cutobject,ait_section,ait_comment]) do
|
|
begin
|
|
if tai(hp.next).typ=ait_section then
|
|
lasTSectype:=tai_section(hp.next).sectype;
|
|
hp:=tai(hp.next);
|
|
end;
|
|
if lasTSectype<>sec_none then
|
|
WriteSection(lasTSectype,'');
|
|
AsmStartSize:=AsmSize;
|
|
end;
|
|
end;
|
|
|
|
ait_marker :
|
|
if tai_marker(hp).kind=mark_NoLineInfoStart then
|
|
inc(InlineLevel)
|
|
else if tai_marker(hp).kind=mark_NoLineInfoEnd then
|
|
dec(InlineLevel);
|
|
|
|
ait_directive :
|
|
begin
|
|
case tai_directive(hp).directive of
|
|
asd_nasm_import :
|
|
AsmWrite('import ');
|
|
asd_extern :
|
|
AsmWrite('EXTERN ');
|
|
else
|
|
internalerror(200509191);
|
|
end;
|
|
if tai_directive(hp).name<>'' then
|
|
begin
|
|
|
|
if SmartAsm then
|
|
AddSymbol(tai_directive(hp).name,false);
|
|
|
|
AsmWrite(tai_directive(hp).name);
|
|
end;
|
|
AsmLn;
|
|
end;
|
|
ait_seh_directive :
|
|
{ Ignore for now };
|
|
else
|
|
internalerror(10000);
|
|
end;
|
|
hp:=tai(hp.next);
|
|
end;
|
|
end;
|
|
|
|
|
|
procedure T386NasmAssembler.WriteExternals;
|
|
var
|
|
sym : TAsmSymbol;
|
|
i : longint;
|
|
begin
|
|
for i:=0 to current_asmdata.AsmSymbolDict.Count-1 do
|
|
begin
|
|
sym:=TAsmSymbol(current_asmdata.AsmSymbolDict[i]);
|
|
if sym.bind=AB_EXTERNAL then
|
|
AsmWriteln('EXTERN'#9+sym.name);
|
|
end;
|
|
end;
|
|
|
|
procedure T386NasmAssembler.WriteSmartExternals;
|
|
var
|
|
EC : PExternChain;
|
|
begin
|
|
EC:=FEC;
|
|
while assigned(EC) do
|
|
begin
|
|
if not EC^.is_defined then
|
|
AsmWriteln('EXTERN'#9+EC^.psym^);
|
|
EC:=EC^.next;
|
|
end;
|
|
end;
|
|
|
|
procedure T386NasmAssembler.WriteHeader;
|
|
begin
|
|
{$ifdef i8086}
|
|
AsmWriteLn('BITS 16');
|
|
case current_settings.cputype of
|
|
cpu_8086: AsmWriteLn('CPU 8086');
|
|
cpu_186: AsmWriteLn('CPU 186');
|
|
cpu_286: AsmWriteLn('CPU 286');
|
|
cpu_386: AsmWriteLn('CPU 386');
|
|
cpu_Pentium: AsmWriteLn('CPU PENTIUM');
|
|
cpu_Pentium2: AsmWriteLn('CPU P2');
|
|
cpu_Pentium3: AsmWriteLn('CPU P3');
|
|
cpu_Pentium4: AsmWriteLn('CPU P4');
|
|
cpu_PentiumM: AsmWriteLn('CPU P4');
|
|
else
|
|
internalerror(2013050101);
|
|
end;
|
|
|
|
AsmWriteLn('SECTION ' + CodeSectionName + ' use16 class=code');
|
|
if current_settings.x86memorymodel in x86_near_data_models then
|
|
begin
|
|
{ NASM complains if you put a missing section in the GROUP directive, so }
|
|
{ we add empty declarations to make sure they exist, even if empty }
|
|
AsmWriteLn('SECTION .rodata');
|
|
AsmWriteLn('SECTION .data');
|
|
AsmWriteLn('SECTION .fpc');
|
|
{ WLINK requires class=bss in order to leave the BSS section out of the executable }
|
|
AsmWriteLn('SECTION .bss class=bss');
|
|
{ group these sections in the same segment }
|
|
if current_settings.x86memorymodel=mm_tiny then
|
|
AsmWriteLn('GROUP dgroup text rodata data fpc bss')
|
|
else
|
|
AsmWriteLn('GROUP dgroup rodata data fpc bss');
|
|
end;
|
|
if paratargetdbg in [dbg_dwarf2,dbg_dwarf3,dbg_dwarf4] then
|
|
begin
|
|
AsmWriteLn('SECTION .debug_frame use32 class=DWARF');
|
|
AsmWriteLn('SECTION .debug_info use32 class=DWARF');
|
|
AsmWriteLn('SECTION .debug_line use32 class=DWARF');
|
|
AsmWriteLn('SECTION .debug_abbrev use32 class=DWARF');
|
|
end;
|
|
AsmWriteLn('SECTION ' + CodeSectionName);
|
|
{$else i8086}
|
|
AsmWriteLn('BITS 32');
|
|
{$endif i8086}
|
|
end;
|
|
|
|
|
|
procedure T386NasmAssembler.WriteAsmList;
|
|
var
|
|
hal : tasmlisttype;
|
|
begin
|
|
{$ifdef EXTDEBUG}
|
|
if current_module.mainsource<>'' then
|
|
comment(v_info,'Start writing nasm-styled assembler output for '+current_module.mainsource);
|
|
{$endif}
|
|
WriteHeader;
|
|
AsmLn;
|
|
|
|
WriteExternals;
|
|
|
|
for hal:=low(TasmlistType) to high(TasmlistType) do
|
|
begin
|
|
AsmWriteLn(target_asm.comment+'Begin asmlist '+AsmListTypeStr[hal]);
|
|
writetree(current_asmdata.asmlists[hal]);
|
|
AsmWriteLn(target_asm.comment+'End asmlist '+AsmListTypeStr[hal]);
|
|
end;
|
|
|
|
AsmLn;
|
|
if SmartAsm then
|
|
begin
|
|
WriteSmartExternals;
|
|
FreeExternChainList;
|
|
end;
|
|
{$ifdef EXTDEBUG}
|
|
if current_module.mainsource<>'' then
|
|
comment(v_info,'Done writing nasm-styled assembler output for '+current_module.mainsource);
|
|
{$endif EXTDEBUG}
|
|
end;
|
|
|
|
|
|
{*****************************************************************************
|
|
Initialize
|
|
*****************************************************************************}
|
|
|
|
const
|
|
as_i386_nasmcoff_info : tasminfo =
|
|
(
|
|
id : as_i386_nasmcoff;
|
|
idtxt : 'NASMCOFF';
|
|
asmbin : 'nasm';
|
|
asmcmd : '-f coff -o $OBJ -w-orphan-labels $ASM';
|
|
supported_targets : [system_i386_go32v2];
|
|
flags : [af_needar,af_no_debug];
|
|
labelprefix : '..@';
|
|
comment : '; ';
|
|
dollarsign: '$';
|
|
);
|
|
|
|
as_i386_nasmwin32_info : tasminfo =
|
|
(
|
|
id : as_i386_nasmwin32;
|
|
idtxt : 'NASMWIN32';
|
|
asmbin : 'nasm';
|
|
asmcmd : '-f win32 -o $OBJ -w-orphan-labels $ASM';
|
|
supported_targets : [system_i386_win32];
|
|
flags : [af_needar,af_no_debug];
|
|
labelprefix : '..@';
|
|
comment : '; ';
|
|
dollarsign: '$';
|
|
);
|
|
|
|
as_i386_nasmobj_info : tasminfo =
|
|
(
|
|
id : as_i386_nasmobj;
|
|
idtxt : 'NASMOBJ';
|
|
asmbin : 'nasm';
|
|
asmcmd : '-f obj -o $OBJ -w-orphan-labels $ASM';
|
|
supported_targets : [system_i386_embedded, system_i8086_msdos];
|
|
flags : [af_needar,af_no_debug];
|
|
labelprefix : '..@';
|
|
comment : '; ';
|
|
dollarsign: '$';
|
|
);
|
|
|
|
as_i386_nasmwdosx_info : tasminfo =
|
|
(
|
|
id : as_i386_nasmwdosx;
|
|
idtxt : 'NASMWDOSX';
|
|
asmbin : 'nasm';
|
|
asmcmd : '-f win32 -o $OBJ -w-orphan-labels $ASM';
|
|
supported_targets : [system_i386_wdosx];
|
|
flags : [af_needar,af_no_debug];
|
|
labelprefix : '..@';
|
|
comment : '; ';
|
|
dollarsign: '$';
|
|
);
|
|
|
|
|
|
as_i386_nasmelf_info : tasminfo =
|
|
(
|
|
id : as_i386_nasmelf;
|
|
idtxt : 'NASMELF';
|
|
asmbin : 'nasm';
|
|
asmcmd : '-f elf -o $OBJ -w-orphan-labels $ASM';
|
|
supported_targets : [system_i386_linux];
|
|
flags : [af_needar,af_no_debug];
|
|
labelprefix : '..@';
|
|
comment : '; ';
|
|
dollarsign: '$';
|
|
);
|
|
|
|
as_i386_nasmbeos_info : tasminfo =
|
|
(
|
|
id : as_i386_nasmbeos;
|
|
idtxt : 'NASMELF';
|
|
asmbin : 'nasm';
|
|
asmcmd : '-f elf -o $OBJ -w-orphan-labels $ASM';
|
|
supported_targets : [system_i386_beos];
|
|
flags : [af_needar,af_no_debug];
|
|
labelprefix : '..@';
|
|
comment : '; ';
|
|
dollarsign: '$';
|
|
);
|
|
|
|
as_i386_nasmhaiku_info : tasminfo =
|
|
(
|
|
id : as_i386_nasmhaiku;
|
|
idtxt : 'NASMELF';
|
|
asmbin : 'nasm';
|
|
asmcmd : '-f elf -o $OBJ -w-orphan-labels $ASM';
|
|
supported_targets : [system_i386_haiku];
|
|
flags : [af_needar,af_no_debug];
|
|
labelprefix : '..@';
|
|
comment : '; ';
|
|
dollarsign: '$';
|
|
);
|
|
|
|
|
|
initialization
|
|
RegisterAssembler(as_i386_nasmcoff_info,T386NasmAssembler);
|
|
RegisterAssembler(as_i386_nasmwin32_info,T386NasmAssembler);
|
|
RegisterAssembler(as_i386_nasmwdosx_info,T386NasmAssembler);
|
|
RegisterAssembler(as_i386_nasmobj_info,T386NasmAssembler);
|
|
RegisterAssembler(as_i386_nasmbeos_info,T386NasmAssembler);
|
|
RegisterAssembler(as_i386_nasmhaiku_info,T386NasmAssembler);
|
|
RegisterAssembler(as_i386_nasmelf_info,T386NasmAssembler);
|
|
end.
|