mirror of
https://gitlab.com/freepascal.org/fpc/source.git
synced 2025-04-27 08:33:43 +02:00
1027 lines
32 KiB
ObjectPascal
1027 lines
32 KiB
ObjectPascal
{
|
|
Copyright (c) 1998-2002 by Carl Eric Codere and Peter Vreman
|
|
|
|
Does the parsing for the Xtensa GNU AS styled inline assembler.
|
|
|
|
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 racpugas;
|
|
|
|
{$i fpcdefs.inc}
|
|
|
|
Interface
|
|
|
|
uses
|
|
raatt,raxtensa,
|
|
cpubase;
|
|
|
|
type
|
|
|
|
txtensaattreader = class(tattreader)
|
|
function is_asmopcode(const s: string):boolean;override;
|
|
function is_register(const s:string):boolean;override;
|
|
// function is_targetdirective(const s: string): boolean; override;
|
|
procedure handleopcode;override;
|
|
procedure BuildReference(oper : TXtensaOperand);
|
|
procedure BuildOperand(oper : TXtensaOperand);
|
|
procedure BuildSpecialreg(oper : TXtensaOperand);
|
|
procedure BuildOpCode(instr : TXtensaInstruction);
|
|
procedure ReadSym(oper : TXtensaOperand);
|
|
procedure ConvertCalljmp(instr : TXtensaInstruction);
|
|
procedure HandleTargetDirective; override;
|
|
end;
|
|
|
|
Implementation
|
|
|
|
uses
|
|
{ helpers }
|
|
cutils,
|
|
{ global }
|
|
globtype,globals,verbose,
|
|
systems,aasmbase,aasmtai,aasmdata,aasmcpu,
|
|
{ symtable }
|
|
symconst,symsym,symdef,
|
|
procinfo,
|
|
rabase,rautils,
|
|
cgbase,cgutils,paramgr;
|
|
|
|
|
|
function txtensaattreader.is_register(const s:string):boolean;
|
|
type
|
|
treg2str = record
|
|
name : string[3];
|
|
reg : tregister;
|
|
end;
|
|
|
|
const
|
|
extraregs : array[0..0] of treg2str = (
|
|
(name: 'A1'; reg : NR_A0)
|
|
);
|
|
|
|
var
|
|
i : longint;
|
|
|
|
begin
|
|
result:=inherited is_register(s);
|
|
{ reg found?
|
|
possible aliases are always 2 char
|
|
}
|
|
if result or (not (length(s) in [2,3])) then
|
|
exit;
|
|
for i:=low(extraregs) to high(extraregs) do
|
|
begin
|
|
if s=extraregs[i].name then
|
|
begin
|
|
actasmregister:=extraregs[i].reg;
|
|
result:=true;
|
|
actasmtoken:=AS_REGISTER;
|
|
exit;
|
|
end;
|
|
end;
|
|
end;
|
|
|
|
|
|
procedure txtensaattreader.ReadSym(oper : TXtensaOperand);
|
|
var
|
|
tempstr, mangledname : string;
|
|
typesize,l,k : tcgint;
|
|
begin
|
|
tempstr:=actasmpattern;
|
|
Consume(AS_ID);
|
|
{ typecasting? }
|
|
if (actasmtoken=AS_LPAREN) and
|
|
SearchType(tempstr,typesize) then
|
|
begin
|
|
oper.hastype:=true;
|
|
Consume(AS_LPAREN);
|
|
BuildOperand(oper);
|
|
Consume(AS_RPAREN);
|
|
if oper.opr.typ in [OPR_REFERENCE,OPR_LOCAL] then
|
|
oper.SetSize(typesize,true);
|
|
end
|
|
else
|
|
if not oper.SetupVar(tempstr,false) then
|
|
Message1(sym_e_unknown_id,tempstr);
|
|
{ record.field ? }
|
|
if actasmtoken=AS_DOT then
|
|
begin
|
|
BuildRecordOffsetSize(tempstr,l,k,mangledname,false);
|
|
if (mangledname<>'') then
|
|
Message(asmr_e_invalid_reference_syntax);
|
|
inc(oper.opr.ref.offset,l);
|
|
end;
|
|
end;
|
|
|
|
|
|
Procedure txtensaattreader.BuildReference(oper : TXtensaOperand);
|
|
|
|
procedure do_error;
|
|
begin
|
|
Message(asmr_e_invalid_reference_syntax);
|
|
RecoverConsume(false);
|
|
end;
|
|
|
|
|
|
procedure test_end(require_rbracket : boolean);
|
|
begin
|
|
if require_rbracket then begin
|
|
if not(actasmtoken=AS_RBRACKET) then
|
|
begin
|
|
do_error;
|
|
exit;
|
|
end
|
|
else
|
|
Consume(AS_RBRACKET);
|
|
end;
|
|
if not(actasmtoken in [AS_SEPARATOR,AS_end]) then
|
|
do_error
|
|
else
|
|
begin
|
|
{$IFDEF debugasmreader}
|
|
writeln('TEST_end_FINAL_OK. Created the following ref:');
|
|
writeln('oper.opr.ref.shiftimm=',oper.opr.ref.shiftimm);
|
|
writeln('oper.opr.ref.shiftmode=',ord(oper.opr.ref.shiftmode));
|
|
writeln('oper.opr.ref.index=',ord(oper.opr.ref.index));
|
|
writeln('oper.opr.ref.base=',ord(oper.opr.ref.base));
|
|
writeln('oper.opr.ref.signindex=',ord(oper.opr.ref.signindex));
|
|
writeln('oper.opr.ref.addressmode=',ord(oper.opr.ref.addressmode));
|
|
writeln;
|
|
{$endIF debugasmreader}
|
|
end;
|
|
end;
|
|
|
|
|
|
procedure read_index_shift(require_rbracket : boolean);
|
|
var
|
|
shift : aint;
|
|
begin
|
|
case actasmtoken of
|
|
AS_COMMA :
|
|
begin
|
|
Consume(AS_COMMA);
|
|
if not(actasmtoken=AS_ID) then
|
|
do_error;
|
|
end;
|
|
AS_RBRACKET :
|
|
if require_rbracket then
|
|
test_end(require_rbracket)
|
|
else
|
|
begin
|
|
do_error;
|
|
exit;
|
|
end;
|
|
AS_SEPARATOR,AS_END :
|
|
if not require_rbracket then
|
|
test_end(false)
|
|
else
|
|
do_error;
|
|
else
|
|
begin
|
|
do_error;
|
|
exit;
|
|
end;
|
|
end;
|
|
end;
|
|
|
|
|
|
procedure read_index(require_rbracket : boolean);
|
|
var
|
|
recname : string;
|
|
o_int,s_int : tcgint;
|
|
begin
|
|
case actasmtoken of
|
|
AS_REGISTER :
|
|
begin
|
|
oper.opr.ref.index:=actasmregister;
|
|
Consume(AS_REGISTER);
|
|
read_index_shift(require_rbracket);
|
|
exit;
|
|
end;
|
|
AS_PLUS,AS_MINUS :
|
|
begin
|
|
if actasmtoken=AS_PLUS then
|
|
begin
|
|
Consume(AS_PLUS);
|
|
end;
|
|
if actasmtoken=AS_REGISTER then
|
|
begin
|
|
oper.opr.ref.index:=actasmregister;
|
|
Consume(AS_REGISTER);
|
|
read_index_shift(require_rbracket);
|
|
exit;
|
|
end
|
|
else
|
|
begin
|
|
do_error;
|
|
exit;
|
|
end;
|
|
test_end(require_rbracket);
|
|
exit;
|
|
end;
|
|
AS_HASH : // constant
|
|
begin
|
|
Consume(AS_HASH);
|
|
o_int := BuildConstExpression(false,true);
|
|
if (o_int>4095) or (o_int<-4095) then
|
|
begin
|
|
Message(asmr_e_constant_out_of_bounds);
|
|
RecoverConsume(false);
|
|
exit;
|
|
end
|
|
else
|
|
begin
|
|
inc(oper.opr.ref.offset,o_int);
|
|
test_end(require_rbracket);
|
|
exit;
|
|
end;
|
|
end;
|
|
AS_ID :
|
|
begin
|
|
recname := actasmpattern;
|
|
Consume(AS_ID);
|
|
BuildRecordOffsetSize(recname,o_int,s_int,recname,false);
|
|
if (o_int>4095)or(o_int<-4095) then
|
|
begin
|
|
Message(asmr_e_constant_out_of_bounds);
|
|
RecoverConsume(false);
|
|
exit;
|
|
end
|
|
else
|
|
begin
|
|
inc(oper.opr.ref.offset,o_int);
|
|
test_end(require_rbracket);
|
|
exit;
|
|
end;
|
|
end;
|
|
AS_AT:
|
|
begin
|
|
do_error;
|
|
exit;
|
|
end;
|
|
AS_DOT : // local label
|
|
begin
|
|
BuildConstExpression(true,false);
|
|
test_end(require_rbracket);
|
|
exit;
|
|
end;
|
|
AS_RBRACKET :
|
|
begin
|
|
if require_rbracket then
|
|
begin
|
|
test_end(require_rbracket);
|
|
exit;
|
|
end
|
|
else
|
|
begin
|
|
do_error; // unexpected rbracket
|
|
exit;
|
|
end;
|
|
end;
|
|
AS_SEPARATOR,AS_end :
|
|
begin
|
|
if not require_rbracket then
|
|
begin
|
|
test_end(false);
|
|
exit;
|
|
end
|
|
else
|
|
begin
|
|
do_error;
|
|
exit;
|
|
end;
|
|
end;
|
|
else
|
|
begin
|
|
// unexpected token
|
|
do_error;
|
|
exit;
|
|
end;
|
|
end; // case
|
|
end;
|
|
|
|
|
|
procedure try_prepostindexed;
|
|
begin
|
|
Consume(AS_RBRACKET);
|
|
case actasmtoken of
|
|
AS_COMMA :
|
|
begin // post-indexed
|
|
Consume(AS_COMMA);
|
|
read_index(false);
|
|
exit;
|
|
end;
|
|
AS_NOT :
|
|
begin // pre-indexed
|
|
Consume(AS_NOT);
|
|
test_end(false);
|
|
exit;
|
|
end;
|
|
else
|
|
begin
|
|
test_end(false);
|
|
exit;
|
|
end;
|
|
end; // case
|
|
end;
|
|
|
|
var
|
|
lab : TASMLABEL;
|
|
begin
|
|
Consume(AS_LBRACKET);
|
|
if actasmtoken=AS_REGISTER then
|
|
begin
|
|
oper.opr.ref.base:=actasmregister;
|
|
Consume(AS_REGISTER);
|
|
case actasmtoken of
|
|
AS_RBRACKET :
|
|
begin
|
|
try_prepostindexed;
|
|
exit;
|
|
end;
|
|
AS_COMMA :
|
|
begin
|
|
Consume(AS_COMMA);
|
|
read_index(true);
|
|
exit;
|
|
end;
|
|
else
|
|
begin
|
|
Message(asmr_e_invalid_reference_syntax);
|
|
RecoverConsume(false);
|
|
end;
|
|
end;
|
|
end
|
|
else
|
|
{
|
|
if base isn't a register, r15=PC is implied base, so it must be a local label.
|
|
pascal constants don't make sense, because implied r15
|
|
record offsets probably don't make sense, too (a record offset of code?)
|
|
|
|
TODO: However, we could make the Stackpointer implied.
|
|
|
|
}
|
|
|
|
Begin
|
|
case actasmtoken of
|
|
AS_ID :
|
|
begin
|
|
// TODO: Stackpointer implied,
|
|
Message(asmr_e_invalid_reference_syntax);
|
|
RecoverConsume(false);
|
|
exit;
|
|
end;
|
|
else
|
|
begin
|
|
Message(asmr_e_invalid_reference_syntax);
|
|
RecoverConsume(false);
|
|
exit;
|
|
end;
|
|
end;
|
|
end;
|
|
end;
|
|
|
|
|
|
Procedure txtensaattreader.BuildOperand(oper : TXtensaOperand);
|
|
var
|
|
expr : string;
|
|
typesize,l : tcgint;
|
|
|
|
|
|
procedure AddLabelOperand(hl:tasmlabel);
|
|
begin
|
|
oper.opr.typ:=OPR_SYMBOL;
|
|
oper.opr.symbol:=hl;
|
|
end;
|
|
|
|
|
|
procedure MaybeRecordOffset;
|
|
var
|
|
mangledname: string;
|
|
hasdot : boolean;
|
|
l,
|
|
toffset,
|
|
tsize : tcgint;
|
|
begin
|
|
if not(actasmtoken in [AS_DOT,AS_PLUS,AS_MINUS]) then
|
|
exit;
|
|
l:=0;
|
|
mangledname:='';
|
|
hasdot:=(actasmtoken=AS_DOT);
|
|
if hasdot then
|
|
begin
|
|
if expr<>'' then
|
|
begin
|
|
BuildRecordOffsetSize(expr,toffset,tsize,mangledname,false);
|
|
if (oper.opr.typ<>OPR_CONSTANT) and
|
|
(mangledname<>'') then
|
|
Message(asmr_e_wrong_sym_type);
|
|
inc(l,toffset);
|
|
oper.SetSize(tsize,true);
|
|
end;
|
|
end;
|
|
if actasmtoken in [AS_PLUS,AS_MINUS] then
|
|
inc(l,BuildConstExpression(true,false));
|
|
case oper.opr.typ of
|
|
OPR_LOCAL :
|
|
begin
|
|
{ don't allow direct access to fields of parameters, because that
|
|
will generate buggy code. Allow it only for explicit typecasting }
|
|
if hasdot and
|
|
(not oper.hastype) then
|
|
checklocalsubscript(oper.opr.localsym);
|
|
inc(oper.opr.localsymofs,l)
|
|
end;
|
|
OPR_CONSTANT :
|
|
inc(oper.opr.val,l);
|
|
OPR_REFERENCE :
|
|
if (mangledname<>'') then
|
|
begin
|
|
if (oper.opr.val<>0) then
|
|
Message(asmr_e_wrong_sym_type);
|
|
oper.opr.typ:=OPR_SYMBOL;
|
|
oper.opr.symbol:=current_asmdata.RefAsmSymbol(mangledname,AT_FUNCTION);
|
|
end
|
|
else
|
|
inc(oper.opr.val,l);
|
|
OPR_SYMBOL:
|
|
Message(asmr_e_invalid_symbol_ref);
|
|
else
|
|
internalerror(200309221);
|
|
end;
|
|
end;
|
|
|
|
|
|
function MaybeBuildReference:boolean;
|
|
{ Try to create a reference, if not a reference is found then false
|
|
is returned }
|
|
begin
|
|
MaybeBuildReference:=true;
|
|
case actasmtoken of
|
|
AS_INTNUM,
|
|
AS_MINUS,
|
|
AS_PLUS:
|
|
Begin
|
|
oper.opr.ref.offset:=BuildConstExpression(True,False);
|
|
if actasmtoken<>AS_LPAREN then
|
|
Message(asmr_e_invalid_reference_syntax)
|
|
else
|
|
BuildReference(oper);
|
|
end;
|
|
AS_LPAREN:
|
|
BuildReference(oper);
|
|
AS_ID: { only a variable is allowed ... }
|
|
Begin
|
|
ReadSym(oper);
|
|
case actasmtoken of
|
|
AS_end,
|
|
AS_SEPARATOR,
|
|
AS_COMMA: ;
|
|
AS_LPAREN:
|
|
BuildReference(oper);
|
|
else
|
|
Begin
|
|
Message(asmr_e_invalid_reference_syntax);
|
|
Consume(actasmtoken);
|
|
end;
|
|
end; {end case }
|
|
end;
|
|
else
|
|
MaybeBuildReference:=false;
|
|
end; { end case }
|
|
end;
|
|
|
|
|
|
procedure BuildDirectRef;
|
|
|
|
function GetConstLabel(const symname: string; ofs: aint): TAsmLabel;
|
|
var
|
|
hp: tai;
|
|
newconst: tai_const;
|
|
lab: TAsmLabel;
|
|
begin
|
|
if symname<>'' then
|
|
newconst:=tai_const.Createname(symname,ofs)
|
|
else
|
|
newconst:=tai_const.Create_32bit(ofs);
|
|
|
|
hp:=tai(current_procinfo.aktlocaldata.First);
|
|
while assigned(hp) do
|
|
begin
|
|
if hp.typ=ait_const then
|
|
begin
|
|
if (tai_const(hp).sym=newconst.sym) and
|
|
(tai_const(hp).value=newconst.value) and
|
|
assigned(hp.Previous) and
|
|
(tai(hp.previous).typ=ait_label) then
|
|
begin
|
|
newconst.Free;
|
|
result:=tai_label(hp.Previous).labsym;
|
|
exit;
|
|
end;
|
|
end;
|
|
|
|
hp:=tai(hp.Next);
|
|
end;
|
|
|
|
current_asmdata.getjumplabel(lab);
|
|
current_procinfo.aktlocaldata.concat(tai_align.create(4));
|
|
current_procinfo.aktlocaldata.concat(tai_label.create(lab));
|
|
current_procinfo.aktlocaldata.concat(newconst);
|
|
result:=lab;
|
|
end;
|
|
|
|
var
|
|
symtype: TAsmsymtype;
|
|
sym: string;
|
|
val: tcgint;
|
|
begin
|
|
case actasmtoken of
|
|
AS_INTNUM,
|
|
AS_ID:
|
|
begin
|
|
BuildConstSymbolExpression(true,false,false,val,sym,symtype);
|
|
|
|
if symtype=AT_NONE then
|
|
sym:='';
|
|
|
|
reference_reset(oper.opr.ref,4,[]);
|
|
oper.opr.ref.symbol:=GetConstLabel(sym,val);
|
|
end;
|
|
else
|
|
;
|
|
end;
|
|
end;
|
|
|
|
|
|
function getregsetindex(reg: tregister): integer;
|
|
begin
|
|
if getsubreg(reg)=R_SUBFS then
|
|
begin
|
|
result:=getsupreg(reg)*2;
|
|
if result>32 then
|
|
result:=result-63;
|
|
end
|
|
else
|
|
result:=getsupreg(reg);
|
|
end;
|
|
|
|
var
|
|
tempreg : tregister;
|
|
ireg : tsuperregister;
|
|
regtype: tregistertype;
|
|
subreg: tsubregister;
|
|
hl : tasmlabel;
|
|
{ofs : longint;}
|
|
registerset : tcpuregisterset;
|
|
Begin
|
|
expr:='';
|
|
case actasmtoken of
|
|
AS_LBRACKET: { Memory reference or constant expression }
|
|
Begin
|
|
oper.InitRef;
|
|
BuildReference(oper);
|
|
end;
|
|
|
|
AS_HASH: { Constant expression }
|
|
Begin
|
|
Consume(AS_HASH);
|
|
BuildConstantOperand(oper);
|
|
end;
|
|
AS_ID: { A constant expression, or a Variable ref. }
|
|
Begin
|
|
if is_locallabel(actasmpattern) then
|
|
begin
|
|
CreateLocalLabel(actasmpattern,hl,false);
|
|
Consume(AS_ID);
|
|
AddLabelOperand(hl);
|
|
end
|
|
else
|
|
{ Check for label }
|
|
if SearchLabel(actasmpattern,hl,false) then
|
|
begin
|
|
Consume(AS_ID);
|
|
AddLabelOperand(hl);
|
|
end
|
|
else
|
|
{ probably a variable or normal expression }
|
|
{ or a procedure (such as in CALL ID) }
|
|
Begin
|
|
{ is it a constant ? }
|
|
if SearchIConstant(actasmpattern,l) then
|
|
Begin
|
|
if not (oper.opr.typ in [OPR_NONE,OPR_CONSTANT]) then
|
|
Message(asmr_e_invalid_operand_type);
|
|
BuildConstantOperand(oper);
|
|
end
|
|
else
|
|
begin
|
|
expr:=actasmpattern;
|
|
Consume(AS_ID);
|
|
{ typecasting? }
|
|
if (actasmtoken=AS_LPAREN) and
|
|
SearchType(expr,typesize) then
|
|
begin
|
|
oper.hastype:=true;
|
|
Consume(AS_LPAREN);
|
|
BuildOperand(oper);
|
|
Consume(AS_RPAREN);
|
|
if oper.opr.typ in [OPR_REFERENCE,OPR_LOCAL] then
|
|
oper.SetSize(typesize,true);
|
|
end
|
|
else
|
|
begin
|
|
if not(oper.SetupVar(expr,false)) then
|
|
Begin
|
|
{ look for special symbols ... }
|
|
if expr= '__HIGH' then
|
|
begin
|
|
consume(AS_LPAREN);
|
|
if not oper.setupvar('high'+actasmpattern,false) then
|
|
Message1(sym_e_unknown_id,'high'+actasmpattern);
|
|
consume(AS_ID);
|
|
consume(AS_RPAREN);
|
|
end
|
|
else
|
|
if expr = '__RESULT' then
|
|
oper.SetUpResult
|
|
else
|
|
if expr = '__SELF' then
|
|
oper.SetupSelf
|
|
else
|
|
if expr = '__OLDEBP' then
|
|
oper.SetupOldEBP
|
|
else
|
|
Message1(sym_e_unknown_id,expr);
|
|
end;
|
|
end;
|
|
end;
|
|
if actasmtoken=AS_DOT then
|
|
MaybeRecordOffset;
|
|
{ add a constant expression? }
|
|
if (actasmtoken=AS_PLUS) then
|
|
begin
|
|
l:=BuildConstExpression(true,false);
|
|
case oper.opr.typ of
|
|
OPR_CONSTANT :
|
|
inc(oper.opr.val,l);
|
|
OPR_LOCAL :
|
|
inc(oper.opr.localsymofs,l);
|
|
OPR_REFERENCE :
|
|
inc(oper.opr.ref.offset,l);
|
|
else
|
|
internalerror(200309202);
|
|
end;
|
|
end
|
|
end;
|
|
{ Do we have a indexing reference, then parse it also }
|
|
if actasmtoken=AS_LPAREN then
|
|
BuildReference(oper);
|
|
end;
|
|
|
|
{ Register, a variable reference or a constant reference }
|
|
AS_REGISTER:
|
|
Begin
|
|
{ save the type of register used. }
|
|
tempreg:=actasmregister;
|
|
Consume(AS_REGISTER);
|
|
if (actasmtoken in [AS_end,AS_SEPARATOR,AS_COMMA]) then
|
|
Begin
|
|
if not (oper.opr.typ in [OPR_NONE,OPR_REGISTER]) then
|
|
Message(asmr_e_invalid_operand_type);
|
|
oper.opr.typ:=OPR_REGISTER;
|
|
oper.opr.reg:=tempreg;
|
|
end
|
|
else
|
|
Message(asmr_e_syn_operand);
|
|
end;
|
|
|
|
AS_end,
|
|
AS_SEPARATOR,
|
|
AS_COMMA: ;
|
|
else
|
|
Begin
|
|
Message(asmr_e_syn_operand);
|
|
Consume(actasmtoken);
|
|
end;
|
|
end; { end case }
|
|
end;
|
|
|
|
procedure txtensaattreader.BuildSpecialreg(oper: TXtensaOperand);
|
|
var
|
|
hs, reg : String;
|
|
ch : char;
|
|
i, t : longint;
|
|
hreg : tregister;
|
|
flags : tspecialregflags;
|
|
begin
|
|
hreg:=NR_NO;
|
|
case actasmtoken of
|
|
AS_REGISTER:
|
|
begin
|
|
oper.opr.typ:=OPR_REGISTER;
|
|
oper.opr.reg:=actasmregister;
|
|
Consume(AS_REGISTER);
|
|
end;
|
|
else
|
|
Message(asmr_e_invalid_operand_type);
|
|
end;
|
|
end;
|
|
|
|
|
|
{*****************************************************************************
|
|
tarmattreader
|
|
*****************************************************************************}
|
|
|
|
procedure txtensaattreader.BuildOpCode(instr : TXtensaInstruction);
|
|
var
|
|
operandnum : longint;
|
|
Begin
|
|
{ opcode }
|
|
if (actasmtoken<>AS_OPCODE) then
|
|
Begin
|
|
Message(asmr_e_invalid_or_missing_opcode);
|
|
RecoverConsume(true);
|
|
exit;
|
|
end;
|
|
{ Fill the instr object with the current state }
|
|
with instr do
|
|
begin
|
|
Opcode:=ActOpcode;
|
|
condition:=ActCondition;
|
|
end;
|
|
|
|
{ We are reading operands, so opcode will be an AS_ID }
|
|
operandnum:=1;
|
|
Consume(AS_OPCODE);
|
|
{ Zero operand opcode ? }
|
|
if actasmtoken in [AS_SEPARATOR,AS_end] then
|
|
begin
|
|
operandnum:=0;
|
|
exit;
|
|
end;
|
|
{ Read the operands }
|
|
repeat
|
|
case actasmtoken of
|
|
AS_COMMA: { Operand delimiter }
|
|
Begin
|
|
if operandnum>Max_Operands then
|
|
Message(asmr_e_too_many_operands)
|
|
else
|
|
Inc(operandnum);
|
|
Consume(AS_COMMA);
|
|
end;
|
|
AS_SEPARATOR,
|
|
AS_end : { End of asm operands for this opcode }
|
|
begin
|
|
break;
|
|
end;
|
|
else
|
|
BuildOperand(instr.Operands[operandnum] as TXtensaOperand);
|
|
end; { end case }
|
|
until false;
|
|
instr.Ops:=operandnum;
|
|
end;
|
|
|
|
|
|
function txtensaattreader.is_asmopcode(const s: string):boolean;
|
|
|
|
//const
|
|
// { sorted by length so longer postfixes will match first }
|
|
// postfix2strsorted : array[1..70] of string[9] = (
|
|
// '.F32.S32','.F32.U32','.S32.F32','.U32.F32','.F64.S32','.F64.U32','.S32.F64','.U32.F64',
|
|
// '.F32.S16','.F32.U16','.S16.F32','.U16.F32','.F64.S16','.F64.U16','.S16.F64','.U16.F64',
|
|
// '.F32.F64','.F64.F32',
|
|
// '.I16','.I32','.I64','.S16','.S32','.S64','.U16','.U32','.U64','.F32','.F64',
|
|
// 'IAD','DBD','FDD','EAD','IAS','DBS','FDS','EAS','IAX','DBX','FDX','EAX',
|
|
// '.16','.32','.64','.I8','.S8','.U8','.P8',
|
|
// 'EP','SB','BT','SH','IA','IB','DA','DB','FD','FA','ED','EA',
|
|
// '.8','S','D','E','P','X','R','B','H','T');
|
|
//
|
|
// postfixsorted : array[1..70] of TOpPostfix = (
|
|
// PF_F32S32,PF_F32U32,PF_S32F32,PF_U32F32,PF_F64S32,PF_F64U32,PF_S32F64,PF_U32F64,
|
|
// PF_F32S16,PF_F32U16,PF_S16F32,PF_U16F32,PF_F64S16,PF_F64U16,PF_S16F64,PF_U16F64,
|
|
// PF_F32F64,PF_F64F32,
|
|
// PF_I16,PF_I32,
|
|
// PF_I64,PF_S16,PF_S32,PF_S64,PF_U16,PF_U32,PF_U64,PF_F32,
|
|
// PF_F64,PF_IAD,PF_DBD,PF_FDD,PF_EAD,
|
|
// PF_IAS,PF_DBS,PF_FDS,PF_EAS,PF_IAX,
|
|
// PF_DBX,PF_FDX,PF_EAX,PF_16,PF_32,
|
|
// PF_64,PF_I8,PF_S8,PF_U8,PF_P8,
|
|
// PF_EP,PF_SB,PF_BT,PF_SH,PF_IA,
|
|
// PF_IB,PF_DA,PF_DB,PF_FD,PF_FA,
|
|
// PF_ED,PF_EA,PF_8,PF_S,PF_D,PF_E,
|
|
// PF_P,PF_X,PF_R,PF_B,PF_H,PF_T);
|
|
|
|
var
|
|
j, j2 : longint;
|
|
hs,hs2 : string;
|
|
maxlen : longint;
|
|
icond : tasmcond;
|
|
Begin
|
|
{ making s a value parameter would break other assembler readers }
|
|
hs:=s;
|
|
is_asmopcode:=false;
|
|
|
|
{ clear op code }
|
|
actopcode:=A_None;
|
|
|
|
actcondition:=C_None;
|
|
|
|
{ first, handle B else BLS is read wrong }
|
|
if ((hs[1]='J') and (length(hs)=3)) then
|
|
begin
|
|
for icond:=low(tasmcond) to high(tasmcond) do
|
|
begin
|
|
if copy(hs,2,3)=uppercond2str[icond] then
|
|
begin
|
|
actopcode:=A_J;
|
|
actasmtoken:=AS_OPCODE;
|
|
actcondition:=icond;
|
|
is_asmopcode:=true;
|
|
exit;
|
|
end;
|
|
end;
|
|
end;
|
|
maxlen:=min(length(hs),6);
|
|
actopcode:=A_NONE;
|
|
j2:=maxlen;
|
|
hs2:=hs;
|
|
while j2>=1 do
|
|
begin
|
|
hs:=hs2;
|
|
while j2>=1 do
|
|
begin
|
|
actopcode:=tasmop(PtrUInt(iasmops.Find(copy(hs,1,j2))));
|
|
if actopcode<>A_NONE then
|
|
begin
|
|
actasmtoken:=AS_OPCODE;
|
|
{ strip op code }
|
|
delete(hs,1,j2);
|
|
dec(j2);
|
|
break;
|
|
end;
|
|
dec(j2);
|
|
end;
|
|
|
|
if actopcode=A_NONE then
|
|
exit;
|
|
|
|
begin
|
|
{ search for condition, conditions are always 2 chars }
|
|
if length(hs)>1 then
|
|
begin
|
|
for icond:=low(tasmcond) to high(tasmcond) do
|
|
begin
|
|
if copy(hs,1,2)=uppercond2str[icond] then
|
|
begin
|
|
actcondition:=icond;
|
|
{ strip condition }
|
|
delete(hs,1,2);
|
|
break;
|
|
end;
|
|
end;
|
|
end;
|
|
{ check for postfix }
|
|
//if (length(hs)>0) and (actoppostfix=PF_None) then
|
|
// begin
|
|
// for j:=low(postfixsorted) to high(postfixsorted) do
|
|
// begin
|
|
// if copy(hs,1,length(postfix2strsorted[j]))=postfix2strsorted[j] then
|
|
// begin
|
|
// actoppostfix:=postfixsorted[j];
|
|
// { strip postfix }
|
|
// delete(hs,1,length(postfix2strsorted[j]));
|
|
// break;
|
|
// end;
|
|
// end;
|
|
// end;
|
|
end;
|
|
{ check for format postfix }
|
|
//if length(hs)>0 then
|
|
// begin
|
|
// if copy(hs,1,2) = '.W' then
|
|
// begin
|
|
// actwideformat:=true;
|
|
// delete(hs,1,2);
|
|
// end;
|
|
// end;
|
|
{ if we stripped all postfixes, it's a valid opcode }
|
|
is_asmopcode:=length(hs)=0;
|
|
if is_asmopcode = true then
|
|
break;
|
|
end;
|
|
end;
|
|
|
|
|
|
procedure txtensaattreader.ConvertCalljmp(instr : TXtensaInstruction);
|
|
var
|
|
newopr : toprrec;
|
|
begin
|
|
if instr.Operands[1].opr.typ=OPR_REFERENCE then
|
|
begin
|
|
newopr.typ:=OPR_SYMBOL;
|
|
newopr.symbol:=instr.Operands[1].opr.ref.symbol;
|
|
newopr.symofs:=instr.Operands[1].opr.ref.offset;
|
|
if (instr.Operands[1].opr.ref.base<>NR_NO) or
|
|
(instr.Operands[1].opr.ref.index<>NR_NO) then
|
|
Message(asmr_e_syn_operand);
|
|
instr.Operands[1].opr:=newopr;
|
|
end;
|
|
end;
|
|
|
|
|
|
procedure txtensaattreader.HandleTargetDirective;
|
|
var
|
|
symname,
|
|
symval : String;
|
|
val : tcgint;
|
|
symtyp : TAsmsymtype;
|
|
begin
|
|
case actasmpattern of
|
|
'.thumb_set':
|
|
begin
|
|
consume(AS_TARGET_DIRECTIVE);
|
|
BuildConstSymbolExpression(true,false,false, val,symname,symtyp);
|
|
Consume(AS_COMMA);
|
|
BuildConstSymbolExpression(true,false,false, val,symval,symtyp);
|
|
|
|
curList.concat(tai_symbolpair.create(spk_thumb_set,symname,symval));
|
|
end;
|
|
'.code':
|
|
begin
|
|
consume(AS_TARGET_DIRECTIVE);
|
|
val:=BuildConstExpression(false,false);
|
|
if not(val in [16,32]) then
|
|
Message(asmr_e_invalid_code_value);
|
|
curList.concat(tai_directive.create(asd_code,tostr(val)));
|
|
end;
|
|
'.thumb_func':
|
|
begin
|
|
consume(AS_TARGET_DIRECTIVE);
|
|
curList.concat(tai_directive.create(asd_thumb_func,''));
|
|
end
|
|
else
|
|
inherited HandleTargetDirective;
|
|
end;
|
|
end;
|
|
|
|
|
|
procedure txtensaattreader.handleopcode;
|
|
var
|
|
instr : TXtensaInstruction;
|
|
begin
|
|
instr:=TXtensaInstruction.Create(TXtensaOperand);
|
|
BuildOpcode(instr);
|
|
if is_calljmp(instr.opcode) then
|
|
ConvertCalljmp(instr);
|
|
{
|
|
instr.AddReferenceSizes;
|
|
instr.SetInstructionOpsize;
|
|
instr.CheckOperandSizes;
|
|
}
|
|
instr.ConcatInstruction(curlist);
|
|
instr.Free;
|
|
// actoppostfix:=PF_None;
|
|
// actwideformat:=false;
|
|
end;
|
|
|
|
|
|
{*****************************************************************************
|
|
Initialize
|
|
*****************************************************************************}
|
|
|
|
const
|
|
asmmode_xtensa_att_info : tasmmodeinfo =
|
|
(
|
|
id : asmmode_xtensa_gas;
|
|
idtxt : 'DIVIDED';
|
|
casmreader : txtensaattreader;
|
|
);
|
|
|
|
asmmode_xtensa_standard_info : tasmmodeinfo =
|
|
(
|
|
id : asmmode_standard;
|
|
idtxt : 'STANDARD';
|
|
casmreader : txtensaattreader;
|
|
);
|
|
|
|
initialization
|
|
RegisterAsmMode(asmmode_xtensa_att_info);
|
|
RegisterAsmMode(asmmode_xtensa_standard_info);
|
|
end.
|
|
|