fpc/compiler/ag68kmpw.pas

647 lines
27 KiB
ObjectPascal

{
$Id$
Copyright (c) 1998 by the FPC development team
This unit implements an asmoutput class for Macintosh 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.
****************************************************************************
}
unit ag68kmpw;
interface
uses aasm,assemble;
type
pm68kmpwasmlist=^tm68kmpwasmlist;
tm68kmpwasmlist = object(tasmlist)
procedure WriteTree(p:paasmoutput);virtual;
procedure WriteAsmList;virtual;
end;
implementation
uses
globtype,systems,
dos,globals,cobjects,cpubase,
strings,files,verbose
{$ifdef GDB}
,gdb
{$endif GDB}
;
function double2str(d : double) : string;
var
hs : string;
begin
str(d,hs);
double2str:=hs;
end;
(* TO SUPPORT SOONER OR LATER!!!
function comp2str(d : bestreal) : string;
type
pdouble = ^double;
var
c : comp;
dd : pdouble;
begin
{$ifdef TP}
c:=d;
{$else}
c:=comp(d);
{$endif}
dd:=pdouble(@c); { this makes a bitwise copy of c into a double }
comp2str:=double2str(dd^);
end; *)
const
line_length = 70;
function getreferencestring(const ref : treference; var importstring: string) : string;
var
s : string;
begin
s:='';
importstring:='';
if ref.isintvalue then
s:='#'+tostr(ref.offset)
else
with ref do
begin
if (index=R_NO) and (base=R_NO) and (direction=dir_none) then
begin
if assigned(symbol) then
begin
s:=s+symbol^;
importstring:=symbol^;
if offset<0 then
s:=s+tostr(offset)
else
if (offset>0) then
s:=s+'+'+tostr(offset);
s:='('+s+').L';
end
else
begin
{ direct memory addressing }
s:=s+'('+tostr(offset)+').L';
end;
end
{ index<>R_NO or base<>R_NO }
else
begin
if assigned(symbol) then
s:=s+symbol^;
if offset<0 then
s:=s+tostr(offset)
else
if (offset>0) then
begin
if (symbol=nil) then s:=tostr(offset)
else s:=s+'+'+tostr(offset);
end;
if (index<>R_NO) and (base=R_NO) and (direction=dir_none) then
begin
if (scalefactor = 1) or (scalefactor = 0) then
begin
if offset = 0 then
s:=s+'0(,'+mot_reg2str[index]+'.l)'
else
s:=s+'(,'+mot_reg2str[index]+'.l)';
end
else
begin
if offset = 0 then
s:=s+'0(,'+mot_reg2str[index]+'.l*'+tostr(scalefactor)+')'
else
s:=s+'(,'+mot_reg2str[index]+'.l*'+tostr(scalefactor)+')';
end
end
else
if (index=R_NO) and (base<>R_NO) and (direction=dir_inc) then
begin
if (scalefactor = 1) or (scalefactor = 0) then
s:=s+'('+mot_reg2str[base]+')+'
else
InternalError(10002);
end
else
if (index=R_NO) and (base<>R_NO) and (direction=dir_dec) then
begin
if (scalefactor = 1) or (scalefactor = 0) then
s:=s+'-('+mot_reg2str[base]+')'
else
InternalError(10003);
end
else
if (index=R_NO) and (base<>R_NO) and (direction=dir_none) then
begin
s:=s+'('+mot_reg2str[base]+')';
end
else
if (index<>R_NO) and (base<>R_NO) and (direction=dir_none) then
begin
if (scalefactor = 1) or (scalefactor = 0) then
begin
if offset = 0 then
s:=s+'0('+mot_reg2str[base]+','+mot_reg2str[index]+'.l)'
else
s:=s+'('+mot_reg2str[base]+','+mot_reg2str[index]+'.l)';
end
else
begin
if offset = 0 then
s:=s+'0('+mot_reg2str[base]+','+mot_reg2str[index]+'.l*'+tostr(scalefactor)+')'
else
s:=s+'('+mot_reg2str[base]+','+mot_reg2str[index]+'.l*'+tostr(scalefactor)+')';
end
end
{ if this is not a symbol, and is not in the above, then there is an error }
else
if NOT assigned(symbol) then
InternalError(10004);
end; { endif }
end; { end with }
getreferencestring:=s;
end;
function getopstr(t : byte;o : pointer) : string;
var
hs : string;
i: tregister;
importstring: string;
begin
case t of
top_reg : getopstr:=mot_reg2str[tregister(o)];
top_reglist: begin
hs:='';
for i:=R_NO to R_FPSR do
begin
if i in tregisterlist(o^) then
hs:=hs+mot_reg2str[i]+'/';
end;
delete(hs,length(hs),1);
getopstr := hs;
end;
top_ref : getopstr:=getreferencestring(preference(o)^,importstring);
top_const : getopstr:='#'+tostr(longint(o));
top_symbol : begin
hs[0]:=chr(strlen(pchar(pcsymbol(o)^.symbol)));
move(pchar(pcsymbol(o)^.symbol)^,hs[1],byte(hs[0]));
if pcsymbol(o)^.offset>0 then
hs:=hs+'+'+tostr(pcsymbol(o)^.offset)
else if pcsymbol(o)^.offset<0 then
hs:=hs+tostr(pcsymbol(o)^.offset);
getopstr:=hs;
end;
else internalerror(10001);
end;
end;
function getopstr_jmp(t : byte;o : pointer; var importname: string) : string;
var
hs : string;
begin
importname:='';
case t of
top_reg : getopstr_jmp:=mot_reg2str[tregister(o)];
top_ref : getopstr_jmp:=getreferencestring(preference(o)^,importname);
top_const : getopstr_jmp:=tostr(longint(o));
top_symbol : begin
hs[0]:=chr(strlen(pchar(pcsymbol(o)^.symbol)));
move(pchar(pcsymbol(o)^.symbol)^,hs[1],byte(hs[0]));
if pcsymbol(o)^.offset>0 then
hs:=hs+'+'+tostr(pcsymbol(o)^.offset)
else if pcsymbol(o)^.offset<0 then
hs:=hs+tostr(pcsymbol(o)^.offset);
importname:=hs;
hs:='('+hs+').L';
getopstr_jmp:=hs;
end;
else internalerror(10001);
end;
end;
{****************************************************************************
TM68KMOTASMLIST
****************************************************************************}
var
LastSec : tsection;
procedure tm68kmpwasmlist.WriteTree(p:paasmoutput);
var
hp : pai;
s : string;
counter,
i,j,lines : longint;
quoted : boolean;
importname: string;
begin
hp:=pai(p^.first);
while assigned(hp) do
begin
case hp^.typ of
ait_comment : Begin
AsmWrite(target_asm.comment);
AsmWritePChar(pai_asm_comment(hp)^.str);
AsmLn;
End;
ait_section : begin
if pai_section(hp)^.sec<>sec_none then
begin
AsmLn;
end;
LastSec:=pai_section(hp)^.sec;
end;
{$ifdef DREGALLOC}
ait_regalloc : AsmWriteLn(target_asm.comment+'Register '+att_reg2str[pairegalloc(hp)^.reg]+' allocated');
ait_regdealloc : AsmWriteLn(target_asm.comment+'Register '+att_reg2str[pairegalloc(hp)^.reg]+' released');
{$endif DREGALLOC}
ait_align : AsmWriteLn(#9'ALIGN '+tostr(pai_align(hp)^.aligntype));
ait_external : AsmWriteLn(#9'IMPORT'#9+StrPas(pai_external(hp)^.name));
ait_real_extended : Message(assem_e_extended_not_supported);
ait_comp : Message(assem_e_comp_not_supported);
ait_datablock : begin
{ ------------------------------------------------------- }
{ ----------- ALIGNMENT FOR ANY NON-BYTE VALUE ---------- }
{ ------------- REQUIREMENT FOR 680x0 ------------------- }
{ ------------------------------------------------------- }
if pai_datablock(hp)^.size <> 1 then
begin
if not(cs_littlesize in aktglobalswitches) then
AsmWriteLn(#9'ALIGN 4')
else
AsmWriteLn(#9'ALIGN 2');
end;
if pai_datablock(hp)^.is_global then
AsmWriteLn(#9'EXPORT'#9+StrPas(pai_datablock(hp)^.name));
AsmWriteLn(#9#9+StrPas(pai_datablock(hp)^.name)+#9#9'DS.B '+tostr(pai_datablock(hp)^.size));
end;
ait_const_32bit : Begin
AsmWriteLn(#9#9'DC.L'#9+tostr(pai_const(hp)^.value));
end;
ait_const_16bit : Begin
AsmWriteLn(#9#9'DC.W'#9+tostr(pai_const(hp)^.value));
end;
ait_const_8bit : AsmWriteLn(#9#9'DC.B'#9+tostr(pai_const(hp)^.value));
ait_const_symbol : Begin
AsmWriteLn(#9#9+'DC.L '#9+StrPas(pchar(pai_const(hp)^.value)));
end;
ait_const_symbol_offset :
Begin
AsmWrite(#9#9+'DC.L '#9);
AsmWritePChar(pai_const_symbol_offset(hp)^.name);
if pai_const_symbol_offset(hp)^.offset>0 then
AsmWrite('+'+tostr(pai_const_symbol_offset(hp)^.offset))
else if pai_const_symbol_offset(hp)^.offset<0 then
AsmWrite(tostr(pai_const_symbol_offset(hp)^.offset));
AsmLn;
end;
ait_real_64bit : Begin
AsmWriteLn(#9#9'DC.D'#9+double2str(pai_double(hp)^.value));
end;
ait_real_32bit : Begin
AsmWriteLn(#9#9'DC.S'#9+double2str(pai_single(hp)^.value));
end;
{ TO SUPPORT SOONER OR LATER!!!
ait_comp : AsmWriteLn(#9#9'DC.D'#9+comp2str(pai_extended(hp)^.value));}
ait_string : begin
counter := 0;
lines := pai_string(hp)^.len div line_length;
{ separate lines in different parts }
if pai_string(hp)^.len > 0 then
Begin
for j := 0 to lines-1 do
begin
AsmWrite(#9#9'DC.B'#9);
quoted:=false;
for i:=counter to counter+line_length do
begin
{ it is an ascii character. }
if (ord(pai_string(hp)^.str[i])>31) and
(ord(pai_string(hp)^.str[i])<128) and
(pai_string(hp)^.str[i]<>'''') then
begin
if not(quoted) then
begin
if i>counter then
AsmWrite(',');
AsmWrite('''');
end;
AsmWrite(pai_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(pai_string(hp)^.str[i])));
end;
end; { end for i:=0 to... }
if quoted then AsmWrite('''');
AsmLn;
counter := counter+line_length;
end; { end for j:=0 ... }
{ do last line of lines }
AsmWrite(#9#9'DC.B'#9);
quoted:=false;
for i:=counter to pai_string(hp)^.len-1 do
begin
{ it is an ascii character. }
if (ord(pai_string(hp)^.str[i])>31) and
(ord(pai_string(hp)^.str[i])<128) and
(pai_string(hp)^.str[i]<>'''') then
begin
if not(quoted) then
begin
if i>counter then
AsmWrite(',');
AsmWrite('''');
end;
AsmWrite(pai_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(pai_string(hp)^.str[i])));
end;
end; { end for i:=0 to... }
if quoted then AsmWrite('''');
end; { endif }
AsmLn;
end;
ait_label : begin
if assigned(hp^.next) and (pai(hp^.next)^.typ in
[ait_const_32bit,ait_const_16bit,ait_const_8bit,
ait_const_symbol,ait_const_symbol_offset,
ait_real_64bit,ait_real_32bit,ait_string]) then
begin
if not(cs_littlesize in aktglobalswitches) then
AsmWriteLn(#9'ALIGN 4')
else
AsmWriteLn(#9'ALIGN 2');
end;
AsmWrite(lab2str(pai_label(hp)^.l));
if assigned(hp^.next) and not(pai(hp^.next)^.typ in
[ait_const_32bit,ait_const_16bit,ait_const_8bit,
ait_const_symbol,ait_const_symbol_offset,
ait_real_64bit,ait_string]) then
AsmWriteLn(':');
end;
ait_direct : begin
AsmWritePChar(pai_direct(hp)^.str);
AsmLn;
end;
ait_labeled_instruction :
{ Labeled instructions are those which don't require an }
{ intersegment jump -- jmp/bra/bcc to local labels. }
Begin
{ labeled operand }
if pai_labeled(hp)^._op1 = R_NO then
AsmWriteLn(#9+mot_op2str[pai_labeled(hp)^._operator]+#9+lab2str(pai_labeled(hp)^.lab))
else
{ labeled operand with register }
AsmWriteLn(#9+mot_op2str[pai_labeled(hp)^._operator]+#9+
mot_reg2str[pai_labeled(hp)^._op1]+','+lab2str(pai_labeled(hp)^.lab))
end;
ait_symbol : begin
{ ------------------------------------------------------- }
{ ----------- ALIGNMENT FOR ANY NON-BYTE VALUE ---------- }
{ ------------- REQUIREMENT FOR 680x0 ------------------- }
{ ------------------------------------------------------- }
if assigned(hp^.next) and (pai(hp^.next)^.typ in
[ait_const_32bit,ait_const_16bit,ait_const_8bit,
ait_const_symbol,ait_const_symbol_offset,
ait_real_64bit,ait_real_32bit,ait_string]) then
begin
if not(cs_littlesize in aktglobalswitches) then
AsmWriteLn(#9'ALIGN 4')
else
AsmWriteLn(#9'ALIGN 2');
end;
if assigned(hp^.next) and not(pai(hp^.next)^.typ in
[ait_const_32bit,ait_const_16bit,ait_const_8bit,
ait_const_symbol,ait_const_symbol_offset,
ait_real_64bit,ait_string,ait_real_32bit]) then
{ this is a subroutine }
Begin
if pai_symbol(hp)^.is_global then
AsmWriteLn(#9+StrPas(pai_symbol(hp)^.name)+' PROC EXPORT')
else
AsmWriteLn(#9+StrPas(pai_symbol(hp)^.name)+' PROC');
AsmWriteLn(#9'WITH _DATA');
end
else
Begin
if pai_symbol(hp)^.is_global then
AsmWriteLn(#9'EXPORT'#9+StrPas(pai_symbol(hp)^.name))
else
AsmWriteLn(#9'ENTRY'#9+StrPas(pai_symbol(hp)^.name));
AsmWritePChar(pai_symbol(hp)^.name);
end;
end;
ait_instruction : begin
s:=#9+mot_op2str[pai68k(hp)^._operator]+mot_opsize2str[pai68k(hp)^.size];
if pai68k(hp)^.op1t<>top_none then
begin
{ call and jmp need an extra handling }
{ this code is only called if jmp isn't a labeled instruction }
if pai68k(hp)^._operator in [A_JSR,A_JMP] then
begin
s:=s+#9+getopstr_jmp(pai68k(hp)^.op1t,pai68k(hp)^.op1,importname);
if importname <> '' then
AsmWriteLn(#9+'IMPORT '+importname);
end
else
begin
if pai68k(hp)^.op1t = top_reglist then
s:=s+#9+getopstr(pai68k(hp)^.op1t,@(pai68k(hp)^.reglist))
else
s:=s+#9+getopstr(pai68k(hp)^.op1t,pai68k(hp)^.op1);
if pai68k(hp)^.op2t<>top_none then
begin
if pai68k(hp)^.op2t = top_reglist then
s:=s+','+getopstr(pai68k(hp)^.op2t,@pai68k(hp)^.reglist)
else
s:=s+','+getopstr(pai68k(hp)^.op2t,pai68k(hp)^.op2);
{ three operands }
if pai68k(hp)^.op3t<>top_none then
begin
if (pai68k(hp)^._operator = A_DIVSL) or
(pai68k(hp)^._operator = A_DIVUL) or
(pai68k(hp)^._operator = A_MULU) or
(pai68k(hp)^._operator = A_MULS) or
(pai68k(hp)^._operator = A_DIVS) or
(pai68k(hp)^._operator = A_DIVU) then
s:=s+':'+getopstr(pai68k(hp)^.op3t,pai68k(hp)^.op3)
else
s:=s+','+getopstr(pai68k(hp)^.op3t,pai68k(hp)^.op3);
end;
end;
end;
end;
AsmWriteLn(s);
{ if this instruction is the last before }
{ returning it MIGHT be the end of a }
{ pascal subroutine, if this is so, then }
if (pai68k(hp)^._operator = A_RTS) or
(pai68k(hp)^._operator = A_RTD) then
Begin
{ if next is not an instruction nor a label }
{ this is the end of a procedure probably }
{ and not an inline assembler instruction }
if assigned(hp^.next) and (
(pai(hp^.next)^.typ = ait_label) or
(pai(hp^.next)^.typ = ait_instruction) or
(pai(hp^.next)^.typ = ait_labeled_instruction)) then
begin
end
else
begin
AsmWriteLn(#9'ENDWITH');
AsmWriteLn(#9'ENDPROC');
AsmLn;
end;
end;
end;
{$ifdef GDB}
ait_stabn,
ait_stabs,
ait_force_line,
ait_stab_function_name : ;
{$endif GDB}
ait_marker : ;
else
internalerror(10000);
end;
hp:=pai(hp^.next);
end;
end;
procedure tm68kmpwasmlist.WriteAsmList;
begin
{$ifdef EXTDEBUG}
if assigned(current_module^.mainsource) then
comment(v_info,'Start writing MPW-styled assembler output for '+current_module^.mainsource^);
{$endif}
WriteTree(externals);
AsmLn;
AsmWriteLn(#9'_DATA'#9'RECORD');
{ write a signature to the file }
AsmWriteLn(#9'ALIGN 4');
(* now in pmodules
{$ifdef EXTDEBUG}
AsmWriteLn(#9'DC.B'#9'''compiled by FPC '+version_string+'\0''');
AsmWriteLn(#9'DC.B'#9'''target: '+target_info.short_name+'\0''');
{$endif EXTDEBUG} *)
WriteTree(datasegment);
WriteTree(consts);
WriteTree(bsssegment);
AsmWriteLn(#9'ENDR');
AsmLn;
WriteTree(codesegment);
AsmLn;
AsmWriteLn(#9'END');
{$ifdef EXTDEBUG}
if assigned(current_module^.mainsource) then
comment(v_info,'Done writing MPW-styled assembler output for '+current_module^.mainsource^);
{$endif}
end;
end.
{
$Log$
Revision 1.9 1999-09-16 23:05:51 florian
* m68k compiler is again compilable (only gas writer, no assembler reader)
Revision 1.8 1998/12/11 00:02:42 peter
+ globtype,tokens,version unit splitted from globals
Revision 1.7 1998/11/12 11:19:39 pierre
* fix for first line of function break
Revision 1.6 1998/10/29 11:35:39 florian
* some dll support for win32
* fixed assembler writing for PalmOS
Revision 1.5 1998/10/20 08:06:37 pierre
* several memory corruptions due to double freemem solved
=> never use p^.loc.location:=p^.left^.loc.location;
+ finally I added now by default
that ra386dir translates global and unit symbols
+ added a first field in tsymtable and
a nextsym field in tsym
(this allows to obtain ordered type info for
records and objects in gdb !)
Revision 1.4 1998/10/14 15:56:42 pierre
* all references to comp suppressed for m68k
Revision 1.3 1998/10/12 12:20:47 pierre
+ added tai_const_symbol_offset
for r : pointer = @var.field;
* better message for different arg names on implementation
of function
Revision 1.2 1998/10/07 04:26:31 carl
+ initial rev of MPW asm writer
Revision 1.1.2.1 1998/10/07 01:48:59 carl
* initial revision of MPW asm writer
Revision 1.1.1.1.2.3 1998/09/14 18:56:26 carl
* alignment bugfix for bytes
Revision 1.1.1.1.2.2 1998/07/01 13:58:25 carl
?
Revision 1.1.1.1 1998/03/25 11:18:16 root
* Restored version
Revision 1.3 1998/03/22 12:45:37 florian
* changes of Carl-Eric to m68k target commit:
- wrong nodes because of the new string cg in intel, I had to create
this under m68k also ... had to work it out to fix potential alignment
problems --> this removes the crash of the m68k compiler.
- added absolute addressing in m68k assembler (required for Amiga startup)
- fixed alignment problems (because of byte return values, alignment
would not be always valid) -- is this ok if i change the offset if odd in
setfirsttemp ?? -- it seems ok...
Revision 1.2 1998/03/10 04:23:33 carl
- removed in because can cause range check errors under BP
Revision 1.1 1998/03/10 01:26:10 peter
+ new uniform names
}