mirror of
https://gitlab.com/freepascal.org/fpc/source.git
synced 2025-04-26 23:43:41 +02:00
409 lines
12 KiB
ObjectPascal
409 lines
12 KiB
ObjectPascal
{
|
|
Copyright (c) 1998-2002 by Florian Klaempfl
|
|
|
|
This unit is the VASM writer for PowerPC
|
|
|
|
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.
|
|
|
|
****************************************************************************
|
|
}
|
|
|
|
{****************************************************************************}
|
|
{ Helper routines for Instruction Writer }
|
|
{****************************************************************************}
|
|
|
|
unit agppcvasm;
|
|
|
|
{$i fpcdefs.inc}
|
|
|
|
interface
|
|
|
|
uses
|
|
aasmbase,systems,
|
|
aasmtai,aasmdata,
|
|
aggas,
|
|
cpubase,cgutils,
|
|
globtype;
|
|
|
|
type
|
|
TPPCInstrWriter=class(TCPUInstrWriter)
|
|
procedure WriteInstruction(hp : tai);override;
|
|
end;
|
|
|
|
TPPCVASM=class(TGNUassembler)
|
|
constructor create(info: pasminfo; smart: boolean); override;
|
|
function MakeCmdLine: TCmdStr; override;
|
|
end;
|
|
|
|
topstr = string[4];
|
|
|
|
function getreferencestring(var ref : treference) : string;
|
|
function getopstr_jmp(const o:toper) : string;
|
|
function getopstr(const o:toper) : string;
|
|
function branchmode(o: tasmop): topstr;
|
|
function cond2str(op: tasmop; c: tasmcond): string;
|
|
|
|
implementation
|
|
|
|
uses
|
|
cutils,cfileutl,globals,verbose,
|
|
cgbase,
|
|
assemble,script,
|
|
itcpugas,cpuinfo,
|
|
aasmcpu;
|
|
|
|
{$ifdef cpu64bitaddr}
|
|
const
|
|
refaddr2str: array[trefaddr] of string[9] = ('', '', '', '', '@l', '@h', '@higher', '@highest', '@ha', '@highera', '@highesta');
|
|
verbose_refaddrs = [addr_low, addr_high, addr_higher, addr_highest, addr_higha, addr_highera, addr_highesta];
|
|
refaddr2str_darwin: array[trefaddr] of string[4] = ('','','','','lo16', 'hi16', '@err', '@err', 'ha16', '@err', '@err');
|
|
{$else cpu64bitaddr}
|
|
const
|
|
refaddr2str: array[trefaddr] of string[3] = ('','','','','@l','@h','@ha');
|
|
refaddr2str_darwin: array[trefaddr] of string[4] = ('','','','','lo16','hi16','ha16');
|
|
verbose_refaddrs = [addr_low,addr_high,addr_higha];
|
|
{$endif cpu64bitaddr}
|
|
|
|
|
|
function getreferencestring(var ref : treference) : string;
|
|
var
|
|
s : string;
|
|
begin
|
|
with ref do
|
|
begin
|
|
if ((offset < -32768) or (offset > 32767)) and
|
|
(refaddr = addr_no) then
|
|
internalerror(2006052501);
|
|
if (refaddr = addr_no) then
|
|
s := ''
|
|
else
|
|
begin
|
|
if target_info.system in [system_powerpc_darwin,system_powerpc64_darwin] then
|
|
s := refaddr2str_darwin[refaddr]
|
|
else
|
|
s :='';
|
|
s := s+'(';
|
|
if assigned(symbol) then
|
|
begin
|
|
s:=s+symbol.name;
|
|
if assigned(relsymbol) then
|
|
s:=s+'-'+relsymbol.name;
|
|
end;
|
|
end;
|
|
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 (refaddr in verbose_refaddrs) then
|
|
begin
|
|
s := s+')';
|
|
if not(target_info.system in [system_powerpc_darwin,system_powerpc64_darwin]) then
|
|
s := s+refaddr2str[refaddr];
|
|
end;
|
|
{$ifdef cpu64bitaddr}
|
|
if (refaddr = addr_pic) then
|
|
if (target_info.system <> system_powerpc64_linux) then
|
|
s := s + ')'
|
|
else
|
|
s := s + ')@got';
|
|
{$endif cpu64bitaddr}
|
|
|
|
if (index=NR_NO) then
|
|
begin
|
|
if offset=0 then
|
|
begin
|
|
if not (assigned(symbol)) then
|
|
s:=s+'0';
|
|
end;
|
|
if (base<>NR_NO) then
|
|
s:=s+'('+gas_regname(base)+')'
|
|
else if not assigned(symbol) and
|
|
not(refaddr in verbose_refaddrs) then
|
|
s:=s+'(0)';
|
|
end
|
|
else if (index<>NR_NO) and (base<>NR_NO) then
|
|
begin
|
|
if (offset=0) then
|
|
s:=s+gas_regname(base)+','+gas_regname(index)
|
|
else
|
|
internalerror(2006052502);
|
|
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_ref :
|
|
begin
|
|
if o.ref^.refaddr<>addr_full then
|
|
internalerror(200402264);
|
|
hs:=o.ref^.symbol.name;
|
|
if o.ref^.offset>0 then
|
|
hs:=hs+'+'+tostr(o.ref^.offset)
|
|
else
|
|
if o.ref^.offset<0 then
|
|
hs:=hs+tostr(o.ref^.offset);
|
|
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:
|
|
if o.ref^.refaddr=addr_full then
|
|
begin
|
|
hs:=o.ref^.symbol.name;
|
|
if o.ref^.offset>0 then
|
|
hs:=hs+'+'+tostr(o.ref^.offset)
|
|
else
|
|
if o.ref^.offset<0 then
|
|
hs:=hs+tostr(o.ref^.offset);
|
|
getopstr:=hs;
|
|
end
|
|
else
|
|
getopstr:=getreferencestring(o.ref^);
|
|
else
|
|
internalerror(2002070604);
|
|
end;
|
|
end;
|
|
|
|
|
|
function branchmode(o: tasmop): topstr;
|
|
var tempstr: topstr;
|
|
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:
|
|
begin
|
|
cond2str := tempstr+gas_op2str[op];
|
|
case c.dirhint of
|
|
DH_None:;
|
|
DH_Minus:
|
|
cond2str:=cond2str+'-';
|
|
DH_Plus:
|
|
cond2str:=cond2str+'+';
|
|
else
|
|
internalerror(2003112901);
|
|
end;
|
|
cond2str:=cond2str+#9+tostr(c.bo)+','+tostr(c.bi);
|
|
end;
|
|
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);
|
|
case c.dirhint of
|
|
DH_None:
|
|
tempstr:=tempstr+#9;
|
|
DH_Minus:
|
|
tempstr:=tempstr+('-'+#9);
|
|
DH_Plus:
|
|
tempstr:=tempstr+('+'+#9);
|
|
else
|
|
internalerror(2003112901);
|
|
end;
|
|
case c.cond of
|
|
C_LT..C_NU:
|
|
cond2str := tempstr+gas_regname(newreg(R_SPECIALREGISTER,c.cr,R_SUBWHOLE));
|
|
C_T,C_F,C_DNZT,C_DNZF,C_DZT,C_DZF:
|
|
cond2str := tempstr+tostr(c.crbit);
|
|
else
|
|
cond2str := tempstr;
|
|
end;
|
|
end;
|
|
end
|
|
{ we have a trap instruction }
|
|
else
|
|
begin
|
|
internalerror(2002070601);
|
|
{ not yet implemented !!!!!!!!!!!!!!!!!!!!! }
|
|
{ case tempstr := 'tw';}
|
|
end;
|
|
end;
|
|
end;
|
|
|
|
|
|
{****************************************************************************}
|
|
{ PowerPC Instruction Writer }
|
|
{****************************************************************************}
|
|
|
|
Procedure TPPCInstrWriter.WriteInstruction(hp : tai);
|
|
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,A_BL,A_BLA:
|
|
s:=#9+gas_op2str[op]+#9;
|
|
A_BCTR,A_BCTRL,A_BLR,A_BLRL:
|
|
s:=#9+gas_op2str[op]
|
|
else
|
|
begin
|
|
s:=cond2str(op,taicpu(hp).condition);
|
|
if (s[length(s)] <> #9) and
|
|
(taicpu(hp).ops>0) then
|
|
s := s + ',';
|
|
end;
|
|
end;
|
|
|
|
if (taicpu(hp).ops>0) and (taicpu(hp).oper[0]^.typ<>top_none) then
|
|
begin
|
|
{ first write the current contents of s, because the symbol }
|
|
{ may be 255 characters }
|
|
owner.writer.AsmWrite(s);
|
|
s:=getopstr_jmp(taicpu(hp).oper[0]^);
|
|
end;
|
|
end
|
|
else
|
|
{ process operands }
|
|
begin
|
|
s:=#9+gas_op2str[op];
|
|
if taicpu(hp).ops<>0 then
|
|
begin
|
|
{
|
|
if not is_calljmp(op) then
|
|
sep:=','
|
|
else
|
|
}
|
|
sep:=#9;
|
|
for i:=0 to taicpu(hp).ops-1 do
|
|
begin
|
|
// debug code
|
|
// writeln(s);
|
|
// writeln(taicpu(hp).fileinfo.line);
|
|
s:=s+sep+getopstr(taicpu(hp).oper[i]^);
|
|
sep:=',';
|
|
end;
|
|
end;
|
|
end;
|
|
owner.writer.AsmWriteLn(s);
|
|
end;
|
|
|
|
|
|
{****************************************************************************}
|
|
{ GNU PPC Assembler writer }
|
|
{****************************************************************************}
|
|
|
|
|
|
constructor TPPCVASM.create(info: pasminfo; smart: boolean);
|
|
begin
|
|
inherited;
|
|
InstrWriter := TPPCInstrWriter.create(self);
|
|
end;
|
|
|
|
function TPPCVASM.MakeCmdLine: TCmdStr;
|
|
begin
|
|
result:=asminfo^.asmcmd;
|
|
|
|
if (cs_link_on_target in current_settings.globalswitches) then
|
|
begin
|
|
Replace(result,'$ASM',maybequoted(ScriptFixFileName(AsmFileName)));
|
|
Replace(result,'$OBJ',maybequoted(ScriptFixFileName(ObjFileName)));
|
|
end
|
|
else
|
|
begin
|
|
Replace(result,'$ASM',maybequoted(Unix2AmigaPath(AsmFileName)));
|
|
Replace(result,'$OBJ',maybequoted(Unix2AmigaPath(ObjFileName)));
|
|
end;
|
|
Replace(result,'$EXTRAOPT',asmextraopt);
|
|
end;
|
|
|
|
|
|
|
|
{*****************************************************************************
|
|
Initialize
|
|
*****************************************************************************}
|
|
|
|
const
|
|
as_powerpc_vasm_info : tasminfo =
|
|
(
|
|
id : as_powerpc_vasm;
|
|
|
|
idtxt : 'VASM';
|
|
asmbin : 'fpcvasm';
|
|
asmcmd: '-quiet -Felf -o $OBJ $EXTRAOPT $ASM';
|
|
supported_targets : [system_powerpc_morphos];
|
|
flags : [af_needar,af_smartlink_sections];
|
|
labelprefix : '.L';
|
|
comment : '# ';
|
|
dollarsign: '$';
|
|
);
|
|
|
|
begin
|
|
RegisterAssembler(as_powerpc_vasm_info,TPPCVASM);
|
|
end.
|