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1537 lines
50 KiB
ObjectPascal
1537 lines
50 KiB
ObjectPascal
{
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Copyright (c) 1998-2002 by Carl Eric Codere and Peter Vreman
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Does the parsing for the ARM GNU AS styled inline assembler.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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****************************************************************************
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}
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Unit raarmgas;
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{$i fpcdefs.inc}
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Interface
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uses
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raatt,raarm,
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cpubase;
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type
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tarmattreader = class(tattreader)
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actoppostfix : TOpPostfix;
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actwideformat : boolean;
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function is_asmopcode(const s: string):boolean;override;
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function is_register(const s:string):boolean;override;
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function is_targetdirective(const s: string): boolean; override;
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procedure handleopcode;override;
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procedure BuildReference(oper : tarmoperand);
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procedure BuildOperand(oper : tarmoperand);
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procedure BuildSpecialreg(oper : tarmoperand);
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function TryBuildShifterOp(oper : tarmoperand) : boolean;
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procedure BuildOpCode(instr : tarminstruction);
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procedure ReadSym(oper : tarmoperand);
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procedure ConvertCalljmp(instr : tarminstruction);
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procedure HandleTargetDirective; override;
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protected
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function is_unified: boolean; virtual;
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end;
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tarmunifiedattreader = class(tarmattreader)
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protected
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function is_unified: boolean; override;
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end;
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Implementation
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uses
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{ helpers }
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cutils,
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{ global }
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globtype,globals,verbose,
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systems,aasmbase,aasmtai,aasmdata,aasmcpu,
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{ symtable }
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symconst,symsym,symdef,
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procinfo,
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rabase,rautils,
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cgbase,cgutils,paramgr;
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function tarmunifiedattreader.is_unified: boolean;
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begin
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result:=true;
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end;
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function tarmattreader.is_register(const s:string):boolean;
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type
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treg2str = record
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name : string[3];
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reg : tregister;
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end;
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const
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extraregs : array[0..19+16] of treg2str = (
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(name: 'A1'; reg : NR_R0),
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(name: 'A2'; reg : NR_R1),
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(name: 'A3'; reg : NR_R2),
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(name: 'A4'; reg : NR_R3),
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(name: 'V1'; reg : NR_R4),
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(name: 'V2'; reg : NR_R5),
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(name: 'V3'; reg : NR_R6),
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(name: 'V4'; reg : NR_R7),
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(name: 'V5'; reg : NR_R8),
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(name: 'V6'; reg : NR_R9),
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(name: 'V7'; reg : NR_R10),
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(name: 'V8'; reg : NR_R11),
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(name: 'WR'; reg : NR_R7),
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(name: 'SB'; reg : NR_R9),
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(name: 'SL'; reg : NR_R10),
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(name: 'FP'; reg : NR_R11),
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(name: 'IP'; reg : NR_R12),
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(name: 'SP'; reg : NR_R13),
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(name: 'LR'; reg : NR_R14),
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(name: 'PC'; reg : NR_R15),
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(name: 'C0'; reg : NR_CR0),
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(name: 'C1'; reg : NR_CR1),
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(name: 'C2'; reg : NR_CR2),
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(name: 'C3'; reg : NR_CR3),
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(name: 'C4'; reg : NR_CR4),
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(name: 'C5'; reg : NR_CR5),
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(name: 'C6'; reg : NR_CR6),
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(name: 'C7'; reg : NR_CR7),
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(name: 'C8'; reg : NR_CR8),
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(name: 'C9'; reg : NR_CR9),
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(name: 'C10'; reg : NR_CR10),
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(name: 'C11'; reg : NR_CR11),
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(name: 'C12'; reg : NR_CR12),
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(name: 'C13'; reg : NR_CR13),
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(name: 'C14'; reg : NR_CR14),
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(name: 'C15'; reg : NR_CR15)
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);
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var
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i : longint;
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begin
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result:=inherited is_register(s);
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{ reg found?
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possible aliases are always 2 char
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}
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if result or (not (length(s) in [2,3])) then
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exit;
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for i:=low(extraregs) to high(extraregs) do
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begin
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if s=extraregs[i].name then
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begin
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actasmregister:=extraregs[i].reg;
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result:=true;
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actasmtoken:=AS_REGISTER;
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exit;
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end;
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end;
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end;
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function tarmattreader.is_targetdirective(const s: string): boolean;
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begin
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case s of
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'.force_thumb',
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'.thumb_func',
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'.code',
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'.thumb_set':
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result:=true
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else
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Result:=inherited is_targetdirective(s);
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end;
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end;
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procedure tarmattreader.ReadSym(oper : tarmoperand);
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var
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tempstr, mangledname : string;
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typesize,l,k : tcgint;
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begin
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tempstr:=actasmpattern;
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Consume(AS_ID);
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{ typecasting? }
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if (actasmtoken=AS_LPAREN) and
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SearchType(tempstr,typesize) then
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begin
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oper.hastype:=true;
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Consume(AS_LPAREN);
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BuildOperand(oper);
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Consume(AS_RPAREN);
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if oper.opr.typ in [OPR_REFERENCE,OPR_LOCAL] then
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oper.SetSize(typesize,true);
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end
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else
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if not oper.SetupVar(tempstr,false) then
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Message1(sym_e_unknown_id,tempstr);
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{ record.field ? }
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if actasmtoken=AS_DOT then
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begin
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BuildRecordOffsetSize(tempstr,l,k,mangledname,false);
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if (mangledname<>'') then
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Message(asmr_e_invalid_reference_syntax);
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inc(oper.opr.ref.offset,l);
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end;
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end;
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Procedure tarmattreader.BuildReference(oper : tarmoperand);
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procedure do_error;
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begin
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Message(asmr_e_invalid_reference_syntax);
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RecoverConsume(false);
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end;
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procedure test_end(require_rbracket : boolean);
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begin
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if require_rbracket then begin
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if not(actasmtoken=AS_RBRACKET) then
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begin
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do_error;
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exit;
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end
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else
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Consume(AS_RBRACKET);
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if (actasmtoken=AS_NOT) then
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begin
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oper.opr.ref.addressmode:=AM_PREINDEXED;
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Consume(AS_NOT);
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end;
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end;
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if not(actasmtoken in [AS_SEPARATOR,AS_end]) then
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do_error
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else
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begin
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{$IFDEF debugasmreader}
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writeln('TEST_end_FINAL_OK. Created the following ref:');
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writeln('oper.opr.ref.shiftimm=',oper.opr.ref.shiftimm);
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writeln('oper.opr.ref.shiftmode=',ord(oper.opr.ref.shiftmode));
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writeln('oper.opr.ref.index=',ord(oper.opr.ref.index));
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writeln('oper.opr.ref.base=',ord(oper.opr.ref.base));
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writeln('oper.opr.ref.signindex=',ord(oper.opr.ref.signindex));
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writeln('oper.opr.ref.addressmode=',ord(oper.opr.ref.addressmode));
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writeln;
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{$endIF debugasmreader}
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end;
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end;
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function is_shifter_ref_operation(var a : tshiftmode) : boolean;
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begin
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a := SM_NONE;
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if (actasmpattern='LSL') then
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a := SM_LSL
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else if (actasmpattern='LSR') then
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a := SM_LSR
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else if (actasmpattern='ASR') then
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a := SM_ASR
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else if (actasmpattern='ROR') then
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a := SM_ROR
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else if (actasmpattern='RRX') then
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a := SM_RRX;
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is_shifter_ref_operation := not(a=SM_NONE);
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end;
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procedure read_index_shift(require_rbracket : boolean);
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var
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shift : aint;
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begin
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case actasmtoken of
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AS_COMMA :
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begin
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Consume(AS_COMMA);
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if not(actasmtoken=AS_ID) then
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do_error;
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if is_shifter_ref_operation(oper.opr.ref.shiftmode) then
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begin
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Consume(AS_ID);
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if not(oper.opr.ref.shiftmode=SM_RRX) then
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begin
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if not(actasmtoken=AS_HASH) then
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do_error;
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Consume(AS_HASH);
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shift := BuildConstExpression(false,true);
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if (shift<0) or (shift>32) then
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do_error;
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oper.opr.ref.shiftimm := shift;
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test_end(require_rbracket);
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end
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else
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test_end(require_rbracket);
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end
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else
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begin
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do_error;
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exit;
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end;
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end;
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AS_RBRACKET :
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if require_rbracket then
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test_end(require_rbracket)
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else
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begin
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do_error;
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exit;
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end;
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AS_SEPARATOR,AS_END :
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if not require_rbracket then
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test_end(false)
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else
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do_error;
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else
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begin
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do_error;
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exit;
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end;
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end;
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end;
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procedure read_index(require_rbracket : boolean);
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var
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recname : string;
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o_int,s_int : tcgint;
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begin
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case actasmtoken of
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AS_REGISTER :
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begin
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oper.opr.ref.index:=actasmregister;
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Consume(AS_REGISTER);
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read_index_shift(require_rbracket);
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exit;
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end;
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AS_PLUS,AS_MINUS :
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begin
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if actasmtoken=AS_PLUS then
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begin
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Consume(AS_PLUS);
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end
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else
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begin
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oper.opr.ref.signindex := -1;
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Consume(AS_MINUS);
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end;
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if actasmtoken=AS_REGISTER then
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begin
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oper.opr.ref.index:=actasmregister;
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Consume(AS_REGISTER);
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read_index_shift(require_rbracket);
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exit;
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end
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else
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begin
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do_error;
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exit;
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end;
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test_end(require_rbracket);
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exit;
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end;
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AS_HASH : // constant
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begin
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Consume(AS_HASH);
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o_int := BuildConstExpression(false,true);
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if (o_int>4095) or (o_int<-4095) then
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begin
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Message(asmr_e_constant_out_of_bounds);
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RecoverConsume(false);
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exit;
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end
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else
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begin
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inc(oper.opr.ref.offset,o_int);
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test_end(require_rbracket);
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exit;
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end;
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end;
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AS_ID :
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begin
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recname := actasmpattern;
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Consume(AS_ID);
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BuildRecordOffsetSize(recname,o_int,s_int,recname,false);
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if (o_int>4095)or(o_int<-4095) then
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begin
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Message(asmr_e_constant_out_of_bounds);
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RecoverConsume(false);
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exit;
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end
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else
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begin
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inc(oper.opr.ref.offset,o_int);
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test_end(require_rbracket);
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exit;
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end;
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end;
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AS_AT:
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begin
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do_error;
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exit;
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end;
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AS_DOT : // local label
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begin
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oper.opr.ref.signindex := BuildConstExpression(true,false);
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test_end(require_rbracket);
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exit;
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end;
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AS_RBRACKET :
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begin
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if require_rbracket then
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begin
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test_end(require_rbracket);
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exit;
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end
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else
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begin
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do_error; // unexpected rbracket
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exit;
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end;
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end;
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AS_SEPARATOR,AS_end :
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begin
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if not require_rbracket then
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begin
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test_end(false);
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exit;
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end
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else
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begin
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do_error;
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exit;
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end;
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end;
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else
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begin
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// unexpected token
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do_error;
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exit;
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end;
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end; // case
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end;
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procedure try_prepostindexed;
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begin
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Consume(AS_RBRACKET);
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case actasmtoken of
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AS_COMMA :
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begin // post-indexed
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Consume(AS_COMMA);
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oper.opr.ref.addressmode:=AM_POSTINDEXED;
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read_index(false);
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exit;
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end;
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AS_NOT :
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begin // pre-indexed
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Consume(AS_NOT);
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oper.opr.ref.addressmode:=AM_PREINDEXED;
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test_end(false);
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exit;
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end;
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else
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begin
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test_end(false);
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exit;
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end;
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end; // case
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end;
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var
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lab : TASMLABEL;
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begin
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Consume(AS_LBRACKET);
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oper.opr.ref.addressmode:=AM_OFFSET; // assume "neither PRE nor POST inc"
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if actasmtoken=AS_REGISTER then
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begin
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oper.opr.ref.base:=actasmregister;
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Consume(AS_REGISTER);
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case actasmtoken of
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AS_RBRACKET :
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begin
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try_prepostindexed;
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exit;
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end;
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AS_COMMA :
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begin
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Consume(AS_COMMA);
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read_index(true);
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exit;
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end;
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else
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begin
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Message(asmr_e_invalid_reference_syntax);
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RecoverConsume(false);
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end;
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end;
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end
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else
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{
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if base isn't a register, r15=PC is implied base, so it must be a local label.
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pascal constants don't make sense, because implied r15
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record offsets probably don't make sense, too (a record offset of code?)
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TODO: However, we could make the Stackpointer implied.
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}
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Begin
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case actasmtoken of
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AS_ID :
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begin
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if is_locallabel(actasmpattern) then
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begin
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CreateLocalLabel(actasmpattern,lab,false);
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oper.opr.ref.symbol := lab;
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oper.opr.ref.base := NR_PC;
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Consume(AS_ID);
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test_end(true);
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exit;
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end
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else
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begin
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// TODO: Stackpointer implied,
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Message(asmr_e_invalid_reference_syntax);
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RecoverConsume(false);
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exit;
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end;
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end;
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else
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begin // elsecase
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Message(asmr_e_invalid_reference_syntax);
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RecoverConsume(false);
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exit;
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end;
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end;
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end;
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end;
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|
|
|
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function tarmattreader.TryBuildShifterOp(oper : tarmoperand) : boolean;
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|
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procedure handlepara(sm : tshiftmode);
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begin
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consume(AS_ID);
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fillchar(oper.opr,sizeof(oper.opr),0);
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oper.opr.typ:=OPR_SHIFTEROP;
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oper.opr.shifterop.shiftmode:=sm;
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if sm<>SM_RRX then
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begin
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case actasmtoken of
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AS_REGISTER:
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begin
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oper.opr.shifterop.rs:=actasmregister;
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consume(AS_REGISTER);
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end;
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AS_HASH:
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begin
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consume(AS_HASH);
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oper.opr.shifterop.shiftimm:=BuildConstExpression(false,false);
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end;
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else
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Message(asmr_e_illegal_shifterop_syntax);
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end;
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end;
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|
end;
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|
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begin
|
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result:=true;
|
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if (actasmtoken=AS_ID) then
|
|
begin
|
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if (actasmpattern='LSL') then
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handlepara(SM_LSL)
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else if (actasmpattern='LSR') then
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handlepara(SM_LSR)
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else if (actasmpattern='ASR') then
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handlepara(SM_ASR)
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else if (actasmpattern='ROR') then
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handlepara(SM_ROR)
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else if (actasmpattern='RRX') then
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handlepara(SM_RRX)
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else
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result:=false;
|
|
end
|
|
else
|
|
result:=false;
|
|
end;
|
|
|
|
|
|
Procedure tarmattreader.BuildOperand(oper : tarmoperand);
|
|
var
|
|
expr : string;
|
|
typesize,l : tcgint;
|
|
|
|
|
|
procedure AddLabelOperand(hl:tasmlabel);
|
|
begin
|
|
if not(actasmtoken in [AS_PLUS,AS_MINUS,AS_LPAREN]) and
|
|
is_calljmp(actopcode) then
|
|
begin
|
|
oper.opr.typ:=OPR_SYMBOL;
|
|
oper.opr.symbol:=hl;
|
|
end
|
|
else
|
|
begin
|
|
oper.InitRef;
|
|
oper.opr.ref.symbol:=hl;
|
|
oper.opr.ref.base:=NR_PC;
|
|
if (actasmtoken in [AS_PLUS, AS_MINUS]) then
|
|
begin
|
|
l:=BuildConstExpression(true,false);
|
|
oper.opr.ref.offset:=l;
|
|
end;
|
|
end;
|
|
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;
|
|
|
|
|
|
function is_ConditionCode(hs: string): boolean;
|
|
var icond: tasmcond;
|
|
begin
|
|
is_ConditionCode := false;
|
|
|
|
case actopcode of
|
|
A_IT,A_ITE,A_ITT,
|
|
A_ITEE,A_ITTE,A_ITET,A_ITTT,
|
|
A_ITEEE,A_ITTEE,A_ITETE,A_ITTTE,A_ITEET,A_ITTET,A_ITETT,A_ITTTT:
|
|
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;
|
|
oper.opr.typ := OPR_COND;
|
|
oper.opr.cc := icond;
|
|
exit(true);
|
|
end;
|
|
end;
|
|
end;
|
|
end;
|
|
else
|
|
;
|
|
end;
|
|
end;
|
|
|
|
|
|
function is_modeflag(hs : string): boolean;
|
|
var
|
|
i: longint;
|
|
flags: tcpumodeflags;
|
|
begin
|
|
is_modeflag := false;
|
|
|
|
flags:=[];
|
|
hs:=lower(hs);
|
|
|
|
if (actopcode in [A_CPSID,A_CPSIE]) and (length(hs) >= 1) then
|
|
begin
|
|
for i:=1 to length(hs) do
|
|
begin
|
|
case hs[i] of
|
|
'a':
|
|
Include(flags,mfA);
|
|
'f':
|
|
Include(flags,mfF);
|
|
'i':
|
|
Include(flags,mfI);
|
|
else
|
|
exit;
|
|
end;
|
|
end;
|
|
oper.opr.typ := OPR_MODEFLAGS;
|
|
oper.opr.flags := flags;
|
|
exit(true);
|
|
end;
|
|
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.base:=NR_PC;
|
|
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_EQUAL:
|
|
begin
|
|
case actopcode of
|
|
A_LDRBT,A_LDRB,A_LDR,A_LDRH,A_LDRSB,A_LDRSH,A_LDRT,
|
|
A_LDREX,A_LDREXB,A_LDREXD,A_LDREXH:
|
|
begin
|
|
consume(AS_EQUAL);
|
|
oper.InitRef;
|
|
BuildDirectRef;
|
|
end;
|
|
else
|
|
Message(asmr_e_invalid_opcode_and_operand);
|
|
end;
|
|
end;
|
|
|
|
(*
|
|
AS_INTNUM,
|
|
AS_MINUS,
|
|
AS_PLUS:
|
|
Begin
|
|
{ Constant memory offset }
|
|
{ This must absolutely be followed by ( }
|
|
oper.InitRef;
|
|
oper.opr.ref.offset:=BuildConstExpression(True,False);
|
|
if actasmtoken<>AS_LPAREN then
|
|
begin
|
|
ofs:=oper.opr.ref.offset;
|
|
BuildConstantOperand(oper);
|
|
inc(oper.opr.val,ofs);
|
|
end
|
|
else
|
|
BuildReference(oper);
|
|
end;
|
|
*)
|
|
AS_ID: { A constant expression, or a Variable ref. }
|
|
Begin
|
|
if is_modeflag(actasmpattern) then
|
|
begin
|
|
consume(AS_ID);
|
|
end
|
|
else
|
|
{ Condition code? }
|
|
if is_conditioncode(actasmpattern) then
|
|
begin
|
|
consume(AS_ID);
|
|
end
|
|
else
|
|
{ Local Label ? }
|
|
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(2003092021);
|
|
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 if (actasmtoken=AS_NOT) and (actopcode in [A_LDM,A_STM,A_FLDM,A_FSTM,A_VLDM,A_VSTM,A_SRS,A_RFE]) then
|
|
begin
|
|
consume(AS_NOT);
|
|
oper.opr.typ:=OPR_REFERENCE;
|
|
oper.opr.ref.addressmode:=AM_PREINDEXED;
|
|
oper.opr.ref.index:=tempreg;
|
|
end
|
|
else
|
|
Message(asmr_e_syn_operand);
|
|
end;
|
|
|
|
{ Registerset }
|
|
AS_LSBRACKET:
|
|
begin
|
|
consume(AS_LSBRACKET);
|
|
registerset:=[];
|
|
regtype:=R_INVALIDREGISTER;
|
|
subreg:=R_SUBNONE;
|
|
while actasmtoken<>AS_RSBRACKET do
|
|
begin
|
|
if actasmtoken=AS_REGISTER then
|
|
begin
|
|
include(registerset,getregsetindex(actasmregister));
|
|
if regtype<>R_INVALIDREGISTER then
|
|
begin
|
|
if (getregtype(actasmregister)<>regtype) or
|
|
(getsubreg(actasmregister)<>subreg) then
|
|
Message(asmr_e_mixing_regtypes);
|
|
end
|
|
else
|
|
begin
|
|
regtype:=getregtype(actasmregister);
|
|
subreg:=getsubreg(actasmregister);
|
|
end;
|
|
tempreg:=actasmregister;
|
|
consume(AS_REGISTER);
|
|
if actasmtoken=AS_MINUS then
|
|
begin
|
|
consume(AS_MINUS);
|
|
for ireg:=getregsetindex(tempreg) to getregsetindex(actasmregister) do
|
|
include(registerset,ireg);
|
|
consume(AS_REGISTER);
|
|
end;
|
|
end
|
|
else
|
|
consume(AS_REGISTER);
|
|
if actasmtoken=AS_COMMA then
|
|
consume(AS_COMMA)
|
|
else
|
|
break;
|
|
end;
|
|
consume(AS_RSBRACKET);
|
|
oper.opr.typ:=OPR_REGSET;
|
|
oper.opr.regtype:=regtype;
|
|
oper.opr.subreg:=subreg;
|
|
oper.opr.regset:=registerset;
|
|
if actasmtoken=AS_XOR then
|
|
begin
|
|
consume(AS_XOR);
|
|
oper.opr.usermode:=true;
|
|
end
|
|
else
|
|
oper.opr.usermode:=false;
|
|
if (registerset=[]) then
|
|
Message(asmr_e_empty_regset);
|
|
end;
|
|
AS_end,
|
|
AS_SEPARATOR,
|
|
AS_COMMA: ;
|
|
else
|
|
Begin
|
|
Message(asmr_e_syn_operand);
|
|
Consume(actasmtoken);
|
|
end;
|
|
end; { end case }
|
|
end;
|
|
|
|
procedure tarmattreader.BuildSpecialreg(oper: tarmoperand);
|
|
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;
|
|
AS_ID:
|
|
begin
|
|
t := pos('_', actasmpattern);
|
|
if t > 0 then
|
|
begin
|
|
hs:=lower(actasmpattern);
|
|
reg:=copy(hs, 1, t-1);
|
|
delete(hs, 1, t);
|
|
|
|
if length(hs) < 1 then
|
|
Message(asmr_e_invalid_operand_type);
|
|
|
|
if reg = 'cpsr' then
|
|
hreg:=NR_CPSR
|
|
else if reg='spsr' then
|
|
hreg:=NR_SPSR
|
|
else
|
|
Message(asmr_e_invalid_register);
|
|
|
|
flags:=[];
|
|
for i := 1 to length(hs) do
|
|
begin
|
|
ch:=hs[i];
|
|
if ch='c' then
|
|
include(flags, srC)
|
|
else if ch='x' then
|
|
include(flags, srX)
|
|
else if ch='f' then
|
|
include(flags, srF)
|
|
else if ch='s' then
|
|
include(flags, srS)
|
|
else
|
|
message(asmr_e_invalid_operand_type);
|
|
end;
|
|
|
|
oper.opr.typ:=OPR_SPECIALREG;
|
|
oper.opr.specialreg:=hreg;
|
|
oper.opr.specialregflags:=flags;
|
|
|
|
consume(AS_ID);
|
|
end
|
|
else
|
|
Message(asmr_e_invalid_operand_type); // Otherwise it would have been seen as a AS_REGISTER
|
|
end;
|
|
else
|
|
Message(asmr_e_invalid_operand_type);
|
|
end;
|
|
end;
|
|
|
|
|
|
{*****************************************************************************
|
|
tarmattreader
|
|
*****************************************************************************}
|
|
|
|
procedure tarmattreader.BuildOpCode(instr : tarminstruction);
|
|
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;
|
|
oppostfix:=actoppostfix;
|
|
wideformat:=actwideformat;
|
|
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 ((instr.opcode in [A_MOV,A_MVN,A_CMP,A_CMN,A_TST,A_TEQ,
|
|
A_UXTB,A_UXTH,A_UXTB16,
|
|
A_SXTB,A_SXTH,A_SXTB16]) and
|
|
(operandnum=2)) or
|
|
((operandnum=3) and not(instr.opcode in [A_UMLAL,A_UMULL,A_SMLAL,A_SMULL,A_MLA,A_UMAAL,A_MLS,
|
|
A_SMLABB,A_SMLABT,A_SMLATB,A_SMLATT,A_SMMLA,A_SMMLS,A_SMLAD,A_SMLALD,A_SMLSD,
|
|
A_SMLALBB,A_SMLALBT,A_SMLALTB,A_SMLALTT,A_SMLSLD,
|
|
A_SMLAWB,A_SMLAWT,
|
|
A_MRC,A_MCR,A_MCRR,A_MRRC,A_MRC2,A_MCR2,A_MCRR2,A_MRRC2,
|
|
A_STREXD,A_STRD,
|
|
A_USADA8,
|
|
A_VMOV,
|
|
A_SBFX,A_UBFX,A_BFI])) then
|
|
begin
|
|
Consume(AS_COMMA);
|
|
if not(TryBuildShifterOp(instr.Operands[operandnum+1] as tarmoperand)) then
|
|
Message(asmr_e_illegal_shifterop_syntax);
|
|
Inc(operandnum);
|
|
end
|
|
else
|
|
begin
|
|
if operandnum>Max_Operands then
|
|
Message(asmr_e_too_many_operands)
|
|
else
|
|
Inc(operandnum);
|
|
Consume(AS_COMMA);
|
|
end;
|
|
end;
|
|
AS_SEPARATOR,
|
|
AS_end : { End of asm operands for this opcode }
|
|
begin
|
|
break;
|
|
end;
|
|
else
|
|
if ((instr.opcode = A_MRS) and (operandnum = 2)) or
|
|
((instr.opcode = A_MSR) and (operandnum = 1)) then
|
|
BuildSpecialreg(instr.Operands[operandnum] as tarmoperand)
|
|
else
|
|
BuildOperand(instr.Operands[operandnum] as tarmoperand);
|
|
end; { end case }
|
|
until false;
|
|
instr.Ops:=operandnum;
|
|
end;
|
|
|
|
|
|
function tarmattreader.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]='B') 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_B;
|
|
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;
|
|
|
|
if is_unified then
|
|
begin
|
|
{ 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
|
|
if not ((length(hs)-length(postfix2strsorted[j])) in [0,2,4]) then
|
|
continue;
|
|
|
|
actoppostfix:=postfixsorted[j];
|
|
{ strip postfix }
|
|
delete(hs,1,length(postfix2strsorted[j]));
|
|
break;
|
|
end;
|
|
end;
|
|
end;
|
|
{ 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
|
|
if not ((length(hs)-length(postfix2strsorted[j])) = 0) then
|
|
continue;
|
|
|
|
actoppostfix:=postfixsorted[j];
|
|
{ strip postfix }
|
|
delete(hs,1,length(postfix2strsorted[j]));
|
|
break;
|
|
end;
|
|
end;
|
|
end;
|
|
end
|
|
else
|
|
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 tarmattreader.ConvertCalljmp(instr : tarminstruction);
|
|
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 tarmattreader.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;
|
|
'.force_thumb':
|
|
begin
|
|
consume(AS_TARGET_DIRECTIVE);
|
|
curList.concat(tai_directive.create(asd_force_thumb,''));
|
|
end
|
|
else
|
|
inherited HandleTargetDirective;
|
|
end;
|
|
end;
|
|
|
|
|
|
function tarmattreader.is_unified: boolean;
|
|
begin
|
|
result:=false;
|
|
end;
|
|
|
|
|
|
procedure tarmattreader.handleopcode;
|
|
var
|
|
instr : tarminstruction;
|
|
begin
|
|
instr:=TarmInstruction.Create(TarmOperand);
|
|
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_arm_att_info : tasmmodeinfo =
|
|
(
|
|
id : asmmode_arm_gas;
|
|
idtxt : 'DIVIDED';
|
|
casmreader : tarmattreader;
|
|
);
|
|
|
|
asmmode_arm_att_unified_info : tasmmodeinfo =
|
|
(
|
|
id : asmmode_arm_gas_unified;
|
|
idtxt : 'UNIFIED';
|
|
casmreader : tarmunifiedattreader;
|
|
);
|
|
|
|
asmmode_arm_standard_info : tasmmodeinfo =
|
|
(
|
|
id : asmmode_standard;
|
|
idtxt : 'STANDARD';
|
|
casmreader : tarmattreader;
|
|
);
|
|
|
|
initialization
|
|
RegisterAsmMode(asmmode_arm_att_info);
|
|
RegisterAsmMode(asmmode_arm_att_unified_info);
|
|
RegisterAsmMode(asmmode_arm_standard_info);
|
|
end.
|