mirror of
https://gitlab.com/freepascal.org/fpc/source.git
synced 2025-05-02 10:13:42 +02:00
541 lines
22 KiB
ObjectPascal
541 lines
22 KiB
ObjectPascal
{
|
|
$Id$
|
|
Copyright (c) 1998 by the FPC development team
|
|
|
|
This unit implements an asmoutput class for MOTOROLA syntax with
|
|
Motorola 68000 (recognized by the Amiga Assembler and Charlie Gibbs's
|
|
A68k)
|
|
|
|
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 ag68kmot;
|
|
|
|
interface
|
|
|
|
uses aasm,assemble;
|
|
|
|
type
|
|
pm68kmotasmlist=^tm68kmotasmlist;
|
|
tm68kmotasmlist = object(tasmlist)
|
|
procedure WriteTree(p:paasmoutput);virtual;
|
|
procedure WriteAsmList;virtual;
|
|
end;
|
|
|
|
implementation
|
|
|
|
uses
|
|
dos,globals,systems,cobjects,m68k,
|
|
strings,files,verbose
|
|
{$ifdef GDB}
|
|
,gdb
|
|
{$endif GDB}
|
|
;
|
|
|
|
const
|
|
line_length = 70;
|
|
|
|
function double2str(d : double) : string;
|
|
var
|
|
hs : string;
|
|
begin
|
|
str(d,hs);
|
|
double2str:=hs;
|
|
end;
|
|
|
|
|
|
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;
|
|
|
|
|
|
function getreferencestring(const ref : treference) : string;
|
|
var
|
|
s : string;
|
|
begin
|
|
s:='';
|
|
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^;
|
|
if offset<0 then
|
|
s:=s+tostr(offset)
|
|
else
|
|
if (offset>0) then
|
|
s:=s+'+'+tostr(offset);
|
|
end
|
|
else
|
|
begin
|
|
{ direct memory addressing }
|
|
s:=s+'('+tostr(offset)+').l';
|
|
end;
|
|
end
|
|
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;
|
|
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)^);
|
|
top_const : getopstr:='#'+tostr(longint(o));
|
|
top_symbol : begin
|
|
{ compare with i386 version, where this is a constant. }
|
|
hs[0]:=chr(strlen(pchar(pcsymbol(o)^.symbol)));
|
|
move(pchar(pcsymbol(o)^.symbol)^,hs[1],byte(hs[0]));
|
|
{ inc(byte(hs[0]));}
|
|
{ hs[1]:='#';}
|
|
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) : string;
|
|
var
|
|
hs : string;
|
|
begin
|
|
case t of
|
|
top_reg : getopstr_jmp:=mot_reg2str[tregister(o)];
|
|
top_ref : getopstr_jmp:=getreferencestring(preference(o)^);
|
|
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);
|
|
getopstr_jmp:=hs;
|
|
end;
|
|
else internalerror(10001);
|
|
end;
|
|
end;
|
|
|
|
{****************************************************************************
|
|
TM68KMOTASMLIST
|
|
****************************************************************************}
|
|
|
|
var
|
|
LastSec : tsection;
|
|
|
|
const
|
|
section2str : array[tsection] of string[6]=
|
|
('','CODE','DATA','BSS','');
|
|
|
|
procedure tm68kmotasmlist.WriteTree(p:paasmoutput);
|
|
var
|
|
hp : pai;
|
|
s : string;
|
|
counter,
|
|
i,j,lines : longint;
|
|
quoted : boolean;
|
|
begin
|
|
if not assigned(p) then
|
|
exit;
|
|
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;
|
|
AsmWriteLn('SECTION _'+section2str[pai_section(hp)^.sec]+','+section2str[pai_section(hp)^.sec]);
|
|
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'CNOP 0,'+tostr(pai_align(hp)^.aligntype));
|
|
ait_external : AsmWriteLn(#9'XREF'#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'CNOP 0,4')
|
|
else
|
|
AsmWriteLn(#9'CNOP 0,2');
|
|
end;
|
|
if pai_datablock(hp)^.is_global then
|
|
AsmWriteLn(#9'XDEF'#9+StrPas(pai_datablock(hp)^.name));
|
|
AsmWriteLn(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_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_symbol,
|
|
ait_real_64bit,ait_real_32bit,ait_string]) then
|
|
begin
|
|
if not(cs_littlesize in aktglobalswitches) then
|
|
AsmWriteLn(#9'CNOP 0,4')
|
|
else
|
|
AsmWriteLn(#9'CNOP 0,2');
|
|
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_real_64bit,ait_string]) then
|
|
AsmWriteLn(':');
|
|
end;
|
|
ait_direct : begin
|
|
AsmWritePChar(pai_direct(hp)^.str);
|
|
AsmLn;
|
|
end;
|
|
ait_labeled_instruction :
|
|
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+
|
|
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_symbol,
|
|
ait_real_64bit,ait_real_32bit,ait_string]) then
|
|
begin
|
|
if not(cs_littlesize in aktglobalswitches) then
|
|
AsmWriteLn(#9'CNOP 0,4')
|
|
else
|
|
AsmWriteLn(#9'CNOP 0,2');
|
|
end;
|
|
if pai_symbol(hp)^.is_global then
|
|
AsmWriteLn(#9'XDEF '+StrPas(pai_symbol(hp)^.name));
|
|
AsmWritePChar(pai_symbol(hp)^.name);
|
|
if assigned(hp^.next) and not(pai(hp^.next)^.typ in
|
|
[ait_const_32bit,ait_const_16bit,ait_const_8bit,ait_const_symbol,
|
|
ait_real_64bit,ait_string,ait_real_32bit]) then
|
|
AsmWriteLn(':');
|
|
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
|
|
s:=s+#9+getopstr_jmp(pai68k(hp)^.op1t,pai68k(hp)^.op1)
|
|
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);
|
|
end;
|
|
{$ifdef GDB}
|
|
ait_stabn,
|
|
ait_stabs,
|
|
ait_stab_function_name : ;
|
|
{$endif GDB}
|
|
else
|
|
internalerror(10000);
|
|
end;
|
|
hp:=pai(hp^.next);
|
|
end;
|
|
end;
|
|
|
|
procedure tm68kmotasmlist.WriteAsmList;
|
|
begin
|
|
{$ifdef EXTDEBUG}
|
|
if assigned(current_module^.mainsource) then
|
|
comment(v_info,'Start writing motorola-styled assembler output for '+current_module^.mainsource^);
|
|
{$endif}
|
|
|
|
WriteTree(externals);
|
|
{ WriteTree(debuglist);}
|
|
WriteTree(codesegment);
|
|
WriteTree(datasegment);
|
|
WriteTree(consts);
|
|
WriteTree(rttilist);
|
|
WriteTree(bsssegment);
|
|
Writetree(importssection);
|
|
Writetree(exportssection);
|
|
Writetree(resourcesection);
|
|
|
|
AsmLn;
|
|
AsmWriteLn(#9'END');
|
|
AsmLn;
|
|
|
|
{$ifdef EXTDEBUG}
|
|
if assigned(current_module^.mainsource) then
|
|
comment(v_info,'Done writing motorola-styled assembler output for '+current_module^.mainsource^);
|
|
{$endif}
|
|
end;
|
|
|
|
end.
|
|
{
|
|
$Log$
|
|
Revision 1.7 1998-08-10 14:49:38 peter
|
|
+ localswitches, moduleswitches, globalswitches splitting
|
|
|
|
Revision 1.6 1998/07/10 10:50:56 peter
|
|
* m68k updates
|
|
|
|
Revision 1.5 1998/06/05 17:46:06 peter
|
|
* tp doesn't like comp() typecast
|
|
|
|
Revision 1.4 1998/06/04 23:51:30 peter
|
|
* m68k compiles
|
|
+ .def file creation moved to gendef.pas so it could also be used
|
|
for win32
|
|
|
|
}
|