{
$Id: agppcmpw.pas,v 1.28 2003/11/12 16:05:40 florian Exp $
Copyright (c) 2002 by Florian Klaempfl
This unit implements an asmoutput class for PowerPC with MPW syntax
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
****************************************************************************
}
{
This unit implements an asmoutput class for PowerPC with MPW syntax
}
unit agppcmpw;
{$i fpcdefs.inc}
interface
uses
aasmtai,
globals,aasmbase,aasmcpu,assemble,
cpubase;
type
TPPCMPWAssembler = class(TExternalAssembler)
procedure WriteTree(p:TAAsmoutput);override;
procedure WriteAsmList;override;
Function DoAssemble:boolean;override;
procedure WriteExternals;
{$ifdef GDB}
procedure WriteFileLineInfo(var fileinfo : tfileposinfo);
procedure WriteFileEndInfo;
{$endif}
procedure WriteAsmFileHeader;
private
procedure GenProcedureHeader(var hp:tai);
procedure WriteDataExportHeader(var s:string; isGlobal, isConst:boolean);
end;
implementation
uses
{$ifdef delphi}
sysutils,
{$endif}
cutils,globtype,systems,cclasses,
verbose,finput,fmodule,script,cpuinfo,
cgbase,
itcpugas
;
const
line_length = 70;
{Whether internal procedure references should be xxx[PR]: }
use_PR = false;
const_storage_class = '[RW]';
{$ifdef GDB}
var
n_line : byte; { different types of source lines }
linecount,
includecount : longint;
funcname : pchar;
stabslastfileinfo : tfileposinfo;
isInFunction: Boolean;
firstLineInFunction: longint;
{$endif}
function ReplaceForbiddenChars(var s: string):Boolean;
{Returns wheater a replacement has occured.}
var
i:Integer;
{The dollar sign is not allowed in MPW PPCAsm}
begin
ReplaceForbiddenChars:=false;
for i:=1 to Length(s) do
if s[i]='$' then
begin
s[i]:='s';
ReplaceForbiddenChars:=true;
end;
end;
{*** From here is copyed from agppcgas.pp, except where marked with CHANGED.
Perhaps put in a third common file. ***}
function getreferencestring(var ref : treference) : string;
var
s : string;
begin
with ref do
begin
inc(offset,offsetfixup);
if (symaddr <> refs_full) then
InternalError(2002110301)
else if ((offset < -32768) or (offset > 32767)) then
InternalError(19991);
if assigned(symbol) then
begin
s:= symbol.name;
ReplaceForbiddenChars(s);
{if symbol.typ = AT_FUNCTION then
;}
s:= s+'[TC]' {ref to TOC entry }
end
else
s:= '';
if offset<0 then
s:=s+tostr(offset)
else
if (offset>0) then
begin
if assigned(symbol) then
s:=s+'+'+tostr(offset)
else
s:=s+tostr(offset);
end;
if (index=NR_NO) and (base<>NR_NO) then
begin
if offset=0 then
if not assigned(symbol) then
s:=s+'0';
s:=s+'('+gas_regname(base)+')';
end
else if (index<>NR_NO) and (base<>NR_NO) and (offset=0) then
begin
if (offset=0) then
s:=s+gas_regname(base)+','+gas_regname(index)
else
internalerror(19992); // *** ???
end;
end;
getreferencestring:=s;
end;
function getopstr_jmp(const o:toper) : string;
var
hs : string;
begin
case o.typ of
top_reg :
getopstr_jmp:=gas_regname(o.reg);
{ no top_ref jumping for powerpc }
top_const :
getopstr_jmp:=tostr(o.val);
top_symbol :
begin
hs:=o.sym.name;
ReplaceForbiddenChars(hs);
if o.symofs>0 then
hs:=hs+'+'+tostr(o.symofs)
else
if o.symofs<0 then
hs:=hs+tostr(o.symofs);
getopstr_jmp:=hs;
end;
top_none:
getopstr_jmp:='';
else
internalerror(2002070603);
end;
end;
function getopstr(const o:toper) : string;
var
hs : string;
begin
case o.typ of
top_reg:
getopstr:=gas_regname(o.reg);
top_const:
getopstr:=tostr(longint(o.val));
top_ref:
getopstr:=getreferencestring(o.ref^);
top_symbol:
begin
hs:=o.sym.name;
ReplaceForbiddenChars(hs);
if o.symofs>0 then
hs:=hs+'+'+tostr(o.symofs)
else
if o.symofs<0 then
hs:=hs+tostr(o.symofs);
getopstr:=hs;
end;
else
internalerror(2002070604);
end;
end;
function branchmode(o: tasmop): string[4];
var tempstr: string[4];
begin
tempstr := '';
case o of
A_BCCTR,A_BCCTRL: tempstr := 'ctr';
A_BCLR,A_BCLRL: tempstr := 'lr';
end;
case o of
A_BL,A_BLA,A_BCL,A_BCLA,A_BCCTRL,A_BCLRL: tempstr := tempstr+'l';
end;
case o of
A_BA,A_BLA,A_BCA,A_BCLA: tempstr:=tempstr+'a';
end;
branchmode := tempstr;
end;
function cond2str(op: tasmop; c: tasmcond): string;
{ note: no checking is performed whether the given combination of }
{ conditions is valid }
var tempstr: string;
begin
tempstr:=#9;
case c.simple of
false: cond2str := tempstr+gas_op2str[op]+#9+tostr(c.bo)+','+
tostr(c.bi);
true:
if (op >= A_B) and (op <= A_BCLRL) then
case c.cond of
{ unconditional branch }
C_NONE:
cond2str := tempstr+gas_op2str[op];
{ bdnzt etc }
else
begin
tempstr := tempstr+'b'+asmcondflag2str[c.cond]+
branchmode(op)+#9;
case c.cond of
C_LT..C_NU:
cond2str := tempstr+gas_regname(newreg(R_SPECIALREGISTER,c.cr,R_SUBNONE)); // *** R_SUBWHOLE ???
C_T..C_DZF:
cond2str := tempstr+tostr(c.crbit);
end;
end;
end
{ we have a trap instruction }
else
begin
internalerror(2002070601);
{ not yet implemented !!!!!!!!!!!!!!!!!!!!! }
{ case tempstr := 'tw';}
end;
end;
end;
Function GetInstruction(hp : tai):string; {CHANGED from method to proc}
var op: TAsmOp;
s: string;
i: byte;
sep: string[3];
begin
op:=taicpu(hp).opcode;
if is_calljmp(op) then
begin
{ direct BO/BI in op[0] and op[1] not supported, put them in condition! }
case op of
A_B,A_BA:
s:=#9+gas_op2str[op]+#9;
A_BCTR,A_BCTRL,A_BLR,A_BLRL:
s:=#9+gas_op2str[op];
A_BL,A_BLA:
s:=#9+gas_op2str[op]+#9'.';
else
s:=cond2str(op,taicpu(hp).condition)+',';
end;
if (taicpu(hp).oper[0]^.typ <> top_none) then
s:=s+getopstr_jmp(taicpu(hp).oper[0]^);
if use_PR then
if (op=A_BL) or (op=A_BLA) then
s:=s+'[PR]';
end
else
{ process operands }
begin
case op of
A_MFSPR:
case taicpu(hp).oper[1]^.reg of
NR_CR:
begin
op:=A_MFCR;
taicpu(hp).ops:=1;
end;
NR_LR:
begin
op:=A_MFLR;
taicpu(hp).ops:=1;
end;
else
internalerror(2002100701);
end;
A_MTSPR:
case taicpu(hp).oper[1]^.reg of
NR_CR:
begin
op:=A_MTCR;
taicpu(hp).ops:=1;
end;
NR_LR:
begin
op:=A_MTLR;
taicpu(hp).ops:=1;
end;
else
internalerror(2002100701);
end;
end;
s:=#9+gas_op2str[op];
if taicpu(hp).ops<>0 then
begin
sep:=#9;
for i:=0 to taicpu(hp).ops-1 do
begin
s:=s+sep+getopstr(taicpu(hp).oper[i]^);
sep:=',';
end;
end;
end;
GetInstruction:=s;
end;
{*** Until here is copyed from agppcgas.pp. ***}
function single2str(d : single) : string;
var
hs : string;
p : byte;
begin
str(d,hs);
{ nasm expects a lowercase e }
p:=pos('E',hs);
if p>0 then
hs[p]:='e';
p:=pos('+',hs);
if p>0 then
delete(hs,p,1);
single2str:=lower(hs);
end;
function double2str(d : double) : string;
var
hs : string;
p : byte;
begin
str(d,hs);
{ nasm expects a lowercase e }
p:=pos('E',hs);
if p>0 then
hs[p]:='e';
p:=pos('+',hs);
if p>0 then
delete(hs,p,1);
double2str:=lower(hs);
end;
function fixline(s:string):string;
{
return s with all leading and ending spaces and tabs removed
}
var
i,j,k : longint;
begin
i:=length(s);
while (i>0) and (s[i] in [#9,' ']) do
dec(i);
j:=1;
while (j<i) and (s[j] in [#9,' ']) do
inc(j);
for k:=j to i do
if s[k] in [#0..#31,#127..#255] then
s[k]:='.';
fixline:=Copy(s,j,i-j+1);
end;
{****************************************************************************
PowerPC MPW Assembler
****************************************************************************}
procedure TPPCMPWAssembler.GenProcedureHeader(var hp:tai);
{Returns the current hp where the caller should continue from}
{For multiple entry procedures, only the last is exported as xxx[PR]
(if use_PR is set) }
procedure WriteExportHeader(hp:tai);
var
s: string;
replaced: boolean;
begin
s:= tai_symbol(hp).sym.name;
replaced:= ReplaceForbiddenChars(s);
if not use_PR then
begin
AsmWrite(#9'export'#9'.');
AsmWrite(s);
if replaced then
begin
AsmWrite(' => ''.');
AsmWrite(tai_symbol(hp).sym.name);
AsmWrite('''');
end;
AsmLn;
end;
AsmWrite(#9'export'#9);
AsmWrite(s);
AsmWrite('[DS]');
if replaced then
begin
AsmWrite(' => ''');
AsmWrite(tai_symbol(hp).sym.name);
AsmWrite('[DS]''');
end;
AsmLn;
{Entry in transition vector: }
AsmWrite(#9'csect'#9); AsmWrite(s); AsmWriteLn('[DS]');
AsmWrite(#9'dc.l'#9'.'); AsmWriteLn(s);
AsmWriteln(#9'dc.l'#9'TOC[tc0]');
{Entry in TOC: }
AsmWriteLn(#9'toc');
AsmWrite(#9'tc'#9);
AsmWrite(s); AsmWrite('[TC],');
AsmWrite(s); 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_stab_function_name:
hp:=tai(hp.next);
else
begin
//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
AsmWrite(#9'export'#9'.'); AsmWrite(s); AsmWrite('[PR]');
if replaced then
begin
AsmWrite(' => ''.');
AsmWrite(tai_symbol(last).sym.name);
AsmWrite('[PR]''');
end;
AsmLn;
end;
{Starts the section: }
AsmWrite(#9'csect'#9'.');
AsmWrite(s);
AsmWriteLn('[PR]');
{Info for the debugger: }
AsmWrite(#9'function'#9'.');
AsmWrite(s);
AsmWriteLn('[PR]');
{$ifdef GDB}
if ((cs_debuginfo in aktmoduleswitches) or
(cs_gdb_lineinfo in aktglobalswitches)) then
begin
//info for debuggers:
firstLineInFunction:= stabslastfileinfo.line;
AsmWriteLn(#9'beginf ' + tostr(firstLineInFunction));
isInFunction:= true;
end;
{$endif}
{Write all labels: }
hp:= first;
repeat
s:= tai_symbol(hp).sym.name;
ReplaceForbiddenChars(s);
AsmWrite('.'); AsmWrite(s); AsmWriteLn(':');
until not GetAdjacentTaiSymbol(hp);
end;
procedure TPPCMPWAssembler.WriteDataExportHeader(var s:string; isGlobal, isConst:boolean);
// Returns in s the changed string
var
sym: string;
replaced: boolean;
begin
sym:= s;
replaced:= ReplaceForbiddenChars(s);
if isGlobal then
begin
AsmWrite(#9'export'#9);
AsmWrite(s);
if isConst then
AsmWrite(const_storage_class)
else
AsmWrite('[RW]');
if replaced then
begin
AsmWrite(' => ''');
AsmWrite(sym);
AsmWrite('''');
end;
AsmLn;
end;
if not macos_direct_globals then
begin
AsmWriteLn(#9'toc');
AsmWrite(#9'tc'#9);
AsmWrite(s);
AsmWrite('[TC], ');
AsmWrite(s);
if isConst then
AsmWrite(const_storage_class)
else
AsmWrite('[RW]');
AsmLn;
AsmWrite(#9'csect'#9);
AsmWrite(s);
if isConst then
AsmWrite(const_storage_class)
else
AsmWrite('[RW]');
end
else
begin
AsmWrite(#9'csect'#9);
AsmWrite(s);
AsmWrite('[TC]');
end;
AsmLn;
end;
var
LasTSec : TSection;
lastfileinfo : tfileposinfo;
infile,
lastinfile : tinputfile;
const
ait_const2str:array[ait_const_32bit..ait_const_8bit] of string[8]=
(#9'dc.l'#9,#9'dc.w'#9,#9'dc.b'#9);
Function PadTabs(const p:string;addch:char):string;
var
s : string;
i : longint;
begin
i:=length(p);
if addch<>#0 then
begin
inc(i);
s:=p+addch;
end
else
s:=p;
if i<8 then
PadTabs:=s+#9#9
else
PadTabs:=s+#9;
end;
{$ifdef GDB}
procedure TPPCMPWAssembler.WriteFileLineInfo(var fileinfo : tfileposinfo);
var
curr_n : byte;
begin
if not ((cs_debuginfo in aktmoduleswitches) or
(cs_gdb_lineinfo in aktglobalswitches)) then
exit;
{ file changed ? (must be before line info) }
if (fileinfo.fileindex<>0) and
(stabslastfileinfo.fileindex<>fileinfo.fileindex) then
begin
infile:=current_module.sourcefiles.get_file(fileinfo.fileindex);
if assigned(infile) then
begin
(*
if includecount=0 then
curr_n:=n_sourcefile
else
curr_n:=n_includefile;
if (infile.path^<>'') then
begin
AsmWriteLn(#9'.stabs "'+lower(BsToSlash(FixPath(infile.path^,false)))+'",'+
tostr(curr_n)+',0,0,'+target_asm.labelprefix+'text'+ToStr(IncludeCount));
end;
AsmWriteLn(#9'.stabs "'+lower(FixFileName(infile.name^))+'",'+
tostr(curr_n)+',0,0,'+target_asm.labelprefix+'text'+ToStr(IncludeCount));
*)
AsmWriteLn(#9'file '''+lower(FixFileName(infile.name^))+'''');
(*
AsmWriteLn(target_asm.labelprefix+'text'+ToStr(IncludeCount)+':');
*)
inc(includecount);
{ force new line info }
stabslastfileinfo.line:=-1;
end;
end;
{ line changed ? }
if (stabslastfileinfo.line<>fileinfo.line) and (fileinfo.line<>0) then
begin
(*
if (n_line=n_textline) and assigned(funcname) and
(target_info.use_function_relative_addresses) then
begin
AsmWriteLn(target_asm.labelprefix+'l'+tostr(linecount)+':');
AsmWrite(#9'.stabn '+tostr(n_line)+',0,'+tostr(fileinfo.line)+','+
target_asm.labelprefix+'l'+tostr(linecount)+' - ');
AsmWritePChar(FuncName);
AsmLn;
inc(linecount);
end
else
AsmWriteLn(#9'.stabd'#9+tostr(n_line)+',0,'+tostr(fileinfo.line));
*)
if isInFunction then
AsmWriteln(#9'line '+ tostr(fileinfo.line - firstLineInFunction - 1));
end;
stabslastfileinfo:=fileinfo;
end;
procedure TPPCMPWAssembler.WriteFileEndInfo;
begin
if not ((cs_debuginfo in aktmoduleswitches) or
(cs_gdb_lineinfo in aktglobalswitches)) then
exit;
AsmLn;
(*
AsmWriteLn(ait_section2str(sec_code));
AsmWriteLn(#9'.stabs "",'+tostr(n_sourcefile)+',0,0,'+target_asm.labelprefix+'etext');
AsmWriteLn(target_asm.labelprefix+'etext:');
*)
end;
{$endif}
procedure TPPCMPWAssembler.WriteTree(p:TAAsmoutput);
var
s,
prefix,
suffix : string;
hp : tai;
hp1 : tailineinfo;
counter,
lines,
InlineLevel : longint;
i,j,l : longint;
consttyp : taitype;
found,
do_line,DoNotSplitLine,
quoted : boolean;
sep : char;
replaced : boolean;
begin
if not assigned(p) then
exit;
InlineLevel:=0;
{ lineinfo is only needed for codesegment (PFV) }
do_line:=((cs_asm_source in aktglobalswitches) or
(cs_lineinfo in aktmoduleswitches))
and (p=codesegment);
DoNotSplitLine:=false;
hp:=tai(p.first);
while assigned(hp) do
begin
if not(hp.typ in SkipLineInfo) and
not DoNotSplitLine then
begin
hp1 := hp as tailineinfo;
{$ifdef GDB}
{ write debug info }
if (cs_debuginfo in aktmoduleswitches) or
(cs_gdb_lineinfo in aktglobalswitches) then
WriteFileLineInfo(hp1.fileinfo);
{$endif GDB}
if do_line then
begin
{ load infile }
if lastfileinfo.fileindex<>hp1.fileinfo.fileindex then
begin
infile:=current_module.sourcefiles.get_file(hp1.fileinfo.fileindex);
if assigned(infile) then
begin
{ open only if needed !! }
if (cs_asm_source in aktglobalswitches) then
infile.open;
end;
{ avoid unnecessary reopens of the same file !! }
lastfileinfo.fileindex:=hp1.fileinfo.fileindex;
{ be sure to change line !! }
lastfileinfo.line:=-1;
end;
{ write source }
if (cs_asm_source in aktglobalswitches) and
assigned(infile) then
begin
if (infile<>lastinfile) then
begin
AsmWriteLn(target_asm.comment+'['+infile.name^+']');
if assigned(lastinfile) then
lastinfile.close;
end;
if (hp1.fileinfo.line<>lastfileinfo.line) and
((hp1.fileinfo.line<infile.maxlinebuf) or (InlineLevel>0)) then
begin
if (hp1.fileinfo.line<>0) and
((infile.linebuf^[hp1.fileinfo.line]>=0) or (InlineLevel>0)) then
AsmWriteLn(target_asm.comment+'['+tostr(hp1.fileinfo.line)+'] '+
fixline(infile.GetLineStr(hp1.fileinfo.line)));
{ set it to a negative value !
to make that is has been read already !! PM }
if (infile.linebuf^[hp1.fileinfo.line]>=0) then
infile.linebuf^[hp1.fileinfo.line]:=-infile.linebuf^[hp1.fileinfo.line]-1;
end;
end;
lastfileinfo:=hp1.fileinfo;
lastinfile:=infile;
end;
end;
DoNotSplitLine:=false;
case hp.typ of
ait_comment:
begin
AsmWrite(target_asm.comment);
AsmWritePChar(tai_comment(hp).str);
AsmLn;
end;
ait_regalloc,
ait_tempalloc:
;
ait_section:
begin
{if LasTSec<>sec_none then
AsmWriteLn('_'+target_asm.secnames[LasTSec]+#9#9'ENDS');}
if tai_section(hp).sec<>sec_none then
begin
AsmLn;
AsmWriteLn(#9+target_asm.secnames[tai_section(hp).sec]);
{$ifdef GDB}
lastfileinfo.line:=-1;
{$endif GDB}
end;
LasTSec:=tai_section(hp).sec;
end;
ait_align:
begin
case tai_align(hp).aligntype of
1:AsmWriteLn(#9'align 0');
2:AsmWriteLn(#9'align 1');
4:AsmWriteLn(#9'align 2');
otherwise internalerror(2002110302);
end;
end;
ait_datablock:
begin
s:= tai_datablock(hp).sym.name;
WriteDataExportHeader(s, tai_datablock(hp).is_global, false);
if not macos_direct_globals then
begin
AsmWriteLn(#9'ds.b '+tostr(tai_datablock(hp).size));
end
else
begin
AsmWriteLn(PadTabs(s+':',#0)+'ds.b '+tostr(tai_datablock(hp).size));
{TODO: ? PadTabs(s,#0) }
end;
end;
ait_const_32bit,
ait_const_8bit,
ait_const_16bit :
begin
AsmWrite(ait_const2str[hp.typ]+tostr(tai_const(hp).value));
consttyp:=hp.typ;
l:=0;
repeat
found:=(not (tai(hp.next)=nil)) and (tai(hp.next).typ=consttyp);
if found then
begin
hp:=tai(hp.next);
s:=','+tostr(tai_const(hp).value);
AsmWrite(s);
inc(l,length(s));
end;
until (not found) or (l>line_length);
AsmLn;
end;
ait_const_symbol:
begin
s:= tai_const_symbol(hp).sym.name;
ReplaceForbiddenChars(s);
AsmWrite(#9'dc.l'#9);
if tai_const_symbol(hp).sym.typ = AT_FUNCTION then
begin
if use_PR then
AsmWrite('.');
AsmWrite(s);
if use_PR then
AsmWriteLn('[PR]')
else
AsmWriteLn('[DS]')
end
else
begin
AsmWrite(s);
if not macos_direct_globals then
AsmWriteLn(const_storage_class);
end;
(* TODO: the following might need to be included. Temporaily we
generate an error
if tai_const_symbol(hp).offset>0 then
AsmWrite('+'+tostr(tai_const_symbol(hp).offset))
else if tai_const_symbol(hp).offset<0 then
AsmWrite(tostr(tai_const_symbol(hp).offset));
*)
if tai_const_symbol(hp).offset <> 0 then
InternalError(2002110101);
AsmLn;
end;
ait_real_32bit:
AsmWriteLn(#9'dc.l'#9'"'+single2str(tai_real_32bit(hp).value)+'"');
ait_real_64bit:
AsmWriteLn(#9'dc.d'#9'"'+double2str(tai_real_64bit(hp).value)+'"');
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
AsmWrite(#9'dc.b'#9);
quoted:=false;
for i:=counter to counter+line_length 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
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);
counter := counter+line_length;
end; { end for j:=0 ... }
{ do last line of lines }
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
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).l.is_used then
begin
s:= tai_label(hp).l.name;
ReplaceForbiddenChars(s);
if s[1] = '@' then
//Local labels:
AsmWriteLn(s+':')
else
begin
//Procedure entry points:
if not macos_direct_globals then
begin
AsmWriteLn(#9'toc');
AsmWrite(#9'tc'#9); AsmWrite(s);
AsmWrite('[TC], '); AsmWrite(s);
AsmWriteLn(const_storage_class);
AsmWrite(#9'csect'#9); AsmWrite(s);
AsmWriteLn(const_storage_class);
end
else
begin
AsmWrite(#9'csect'#9); AsmWrite(s);
AsmWriteLn('[TC]');
AsmWriteLn(PadTabs(s+':',#0));
end;
end;
end;
end;
ait_direct:
begin
AsmWritePChar(tai_direct(hp).str);
AsmLn;
end;
ait_symbol:
begin
if tai_symbol(hp).sym.typ=AT_FUNCTION then
GenProcedureHeader(hp)
else if tai_symbol(hp).sym.typ=AT_DATA then
begin
s:= tai_symbol(hp).sym.name;
WriteDataExportHeader(s, tai_symbol(hp).is_global, true);
if macos_direct_globals then
begin
AsmWrite(s);
AsmWriteLn(':');
end;
end
else
InternalError(2003071301);
end;
ait_symbol_end:
{$ifdef GDB}
if isInFunction then
if ((cs_debuginfo in aktmoduleswitches) or
(cs_gdb_lineinfo in aktglobalswitches)) then
begin
//info for debuggers:
AsmWriteLn(#9'endf ' + tostr(stabslastfileinfo.line));
isInFunction:= false;
end
{$endif GDB}
;
ait_instruction:
AsmWriteLn(GetInstruction(hp));
{$ifdef GDB}
ait_stabn: ;
ait_stabs: ;
ait_force_line :
stabslastfileinfo.line:=0;
ait_stab_function_name: ;
{$endif GDB}
ait_cut :
begin
{ only reset buffer if nothing has changed }
if AsmSize=AsmStartSize then
AsmClear
else
begin
{
if LasTSec<>sec_none then
AsmWriteLn('_'+target_asm.secnames[LasTSec]+#9#9'ends');
AsmLn;
}
AsmWriteLn(#9'end');
AsmClose;
DoAssemble;
AsmCreate(tai_cut(hp).place);
end;
{ avoid empty files }
while assigned(hp.next) and (tai(hp.next).typ in [ait_cut,ait_section,ait_comment]) do
begin
if tai(hp.next).typ=ait_section then
begin
lasTSec:=tai_section(hp.next).sec;
end;
hp:=tai(hp.next);
end;
WriteAsmFileHeader;
if lasTSec<>sec_none then
AsmWriteLn(#9+target_asm.secnames[lasTSec]);
{ AsmWriteLn('_'+target_asm.secnames[lasTSec]+#9#9+
'SEGMENT'#9'PARA PUBLIC USE32 '''+
target_asm.secnames[lasTSec]+'''');
}
AsmStartSize:=AsmSize;
end;
ait_marker :
begin
if tai_marker(hp).kind=InlineStart then
inc(InlineLevel)
else if tai_marker(hp).kind=InlineEnd then
dec(InlineLevel);
end;
else
internalerror(2002110303);
end;
hp:=tai(hp.next);
end;
end;
var
currentasmlist : TExternalAssembler;
procedure writeexternal(p:tnamedindexitem;arg:pointer);
var
s:string;
replaced: boolean;
begin
if tasmsymbol(p).defbind=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
AsmWrite(#9'import'#9'.');
AsmWrite(s);
if use_PR then
AsmWrite('[PR]');
if replaced then
begin
AsmWrite(' <= ''.');
AsmWrite(p.name);
if use_PR then
AsmWrite('[PR]''')
else
AsmWrite('''');
end;
AsmLn;
AsmWrite(#9'import'#9);
AsmWrite(s);
AsmWrite('[DS]');
if replaced then
begin
AsmWrite(' <= ''');
AsmWrite(p.name);
AsmWrite('[DS]''');
end;
AsmLn;
AsmWriteLn(#9'toc');
AsmWrite(#9'tc'#9);
AsmWrite(s);
AsmWrite('[TC],');
AsmWrite(s);
AsmWriteLn('[DS]');
end;
AT_DATA:
begin
AsmWrite(#9'import'#9);
AsmWrite(s);
AsmWrite('[RW]');
if replaced then
begin
AsmWrite(' <= ''');
AsmWrite(p.name);
AsmWrite('''');
end;
AsmLn;
AsmWriteLn(#9'toc');
AsmWrite(#9'tc'#9);
AsmWrite(s);
AsmWrite('[TC],');
AsmWrite(s);
AsmWriteLn('[RW]');
end
else
InternalError(2003090901);
end;
end;
end;
procedure TPPCMPWAssembler.WriteExternals;
begin
currentasmlist:=self;
objectlibrary.symbolsearch.foreach_static({$ifdef fpcprocvar}@{$endif}writeexternal,nil);
end;
function TPPCMPWAssembler.DoAssemble : boolean;
var f : file;
begin
DoAssemble:=Inherited DoAssemble;
(*
{ masm does not seem to recognize specific extensions and uses .obj allways PM }
if (aktoutputformat = as_i386_masm) then
begin
if not(cs_asm_extern in aktglobalswitches) then
begin
if Not FileExists(objfile) and
FileExists(ForceExtension(objfile,'.obj')) then
begin
Assign(F,ForceExtension(objfile,'.obj'));
Rename(F,objfile);
end;
end
else
AsmRes.AddAsmCommand('mv',ForceExtension(objfile,'.obj')+' '+objfile,objfile);
end;
*)
end;
procedure TPPCMPWAssembler.WriteAsmFileHeader;
begin
(*
AsmWriteLn(#9'.386p');
{ masm 6.11 does not seem to like LOCALS PM }
if (aktoutputformat = as_i386_tasm) then
begin
AsmWriteLn(#9'LOCALS '+target_asm.labelprefix);
end;
AsmWriteLn('DGROUP'#9'GROUP'#9'_BSS,_DATA');
AsmWriteLn(#9'ASSUME'#9'CS:_CODE,ES:DGROUP,DS:DGROUP,SS:DGROUP');
AsmLn;
*)
AsmWriteLn(#9'string asis'); {Interpret strings just to be the content between the quotes.}
AsmWriteLn(#9'aligning off'); {We do our own aligning.}
AsmLn;
end;
procedure TPPCMPWAssembler.WriteAsmList;
{$ifdef GDB}
var
fileinfo : tfileposinfo;
{$endif GDB}
begin
{$ifdef EXTDEBUG}
if assigned(current_module.mainsource) then
comment(v_info,'Start writing MPW-styled assembler output for '+current_module.mainsource^);
{$endif}
LasTSec:=sec_none;
{$ifdef GDB}
FillChar(stabslastfileinfo,sizeof(stabslastfileinfo),0);
{$endif GDB}
{$ifdef GDB}
//n_line:=n_bssline;
funcname:=nil;
linecount:=1;
includecount:=0;
fileinfo.fileindex:=1;
fileinfo.line:=1;
isInFunction:= false;
firstLineInFunction:= 0;
{ Write main file }
WriteFileLineInfo(fileinfo);
{$endif GDB}
WriteAsmFileHeader;
WriteExternals;
{ PowerPC MPW ASM doesn't support stabs, as we know.
WriteTree(debuglist);}
WriteTree(codesegment);
WriteTree(datasegment);
WriteTree(consts);
WriteTree(rttilist);
WriteTree(resourcestringlist);
WriteTree(bsssegment);
{$ifdef GDB}
WriteFileEndInfo;
{$ENDIF}
AsmWriteLn(#9'end');
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 : '';
supported_target : system_any; { what should I write here ?? }
outputbinary: false;
allowdirect : true;
needar : true;
labelprefix_only_inside_procedure : true;
labelprefix : '@';
comment : '; ';
secnames : ('',
'csect','csect [TC]','csect [TC]', {TODO: Perhaps use other section types.}
'','','','','','',
'','','')
);
initialization
RegisterAssembler(as_powerpc_mpw_info,TPPCMPWAssembler);
end.
{
$Log: agppcmpw.pas,v $
Revision 1.28 2003/11/12 16:05:40 florian
* assembler readers OOPed
+ typed currency constants
+ typed 128 bit float constants if the CPU supports it
Revision 1.27 2003/10/25 10:37:26 florian
* fixed compilation of ppc compiler
Revision 1.26 2003/10/01 20:34:49 peter
* procinfo unit contains tprocinfo
* cginfo renamed to cgbase
* moved cgmessage to verbose
* fixed ppc and sparc compiles
Revision 1.25 2003/09/12 12:30:27 olle
* max lenght of symbols increased to 255
* emitted strings can now contain backslashes
Revision 1.24 2003/09/03 19:35:24 peter
* powerpc compiles again
Revision 1.23 2003/08/24 21:40:12 olle
* minor adjustment
Revision 1.21 2003/08/18 11:47:15 olle
+ added asm directive ALIGNING OFF to avoid unexpected aligning by the assembler
Revision 1.20 2002/10/01 05:17:27 olle
* minor fix
Revision 1.19 2003/04/06 21:01:40 olle
+ line numbers are now emitted in the assembler code
* bug in export and import directive fixed
* made code more in sync with aggas.pas
Revision 1.18 2003/01/13 17:17:50 olle
* changed global var access, TOC now contain pointers to globals
* fixed handling of function pointers
Revision 1.17 2003/01/08 18:43:57 daniel
* Tregister changed into a record
Revision 1.16 2002/11/28 10:56:07 olle
* changed proc ref from .xxx[PR] (refering to its section)
to .xxx (refering to its label) to allow for multiple ref to a proc.
Revision 1.15 2002/11/17 16:31:59 carl
* memory optimization (3-4%) : cleanup of tai fields,
cleanup of tdef and tsym fields.
* make it work for m68k
Revision 1.14 2002/11/07 15:50:23 jonas
* fixed bctr(l) problems
Revision 1.13 2002/11/04 18:24:53 olle
* globals are located in TOC and relative r2, instead of absolute
* symbols which only differs in case are treated as a single symbol
+ tai_const_symbol supported
* only refs_full accepted
Revision 1.12 2002/10/23 15:31:01 olle
* branch b does not jump to dotted symbol now
Revision 1.11 2002/10/19 23:52:40 olle
* import directive changed
Revision 1.10 2002/10/10 19:39:37 florian
* changes from Olle to get simple programs compiled and assembled
Revision 1.9 2002/10/07 21:19:53 florian
* more mpw fixes
Revision 1.8 2002/10/06 22:46:20 florian
* fixed function exporting
Revision 1.7 2002/10/02 22:14:15 florian
* improve function imports
Revision 1.6 2002/09/27 21:09:49 florian
+ readed because previous version was broken
Revision 1.2 2002/08/31 12:43:31 florian
* ppc compilation fixed
Revision 1.1 2002/08/20 21:40:44 florian
+ target macos for ppc added
+ frame work for mpw assembler output
}
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