mirror of
https://gitlab.com/freepascal.org/fpc/source.git
synced 2025-06-13 16:18:20 +02:00
44150f43ac
+ lazarus project file for the compiler added git-svn-id: branches/laksen/riscv_new@39511 -
772 lines
25 KiB
ObjectPascal
772 lines
25 KiB
ObjectPascal
{
|
|
Copyright (c) 1998-2002 by Carl Eric Codere and Peter Vreman
|
|
|
|
Does the parsing for the Risc-V32 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 rarv32gas;
|
|
|
|
{$i fpcdefs.inc}
|
|
|
|
Interface
|
|
|
|
uses
|
|
raatt,rarv32;
|
|
|
|
type
|
|
trv32attreader = class(tattreader)
|
|
function is_register(const s: string): boolean; override;
|
|
function is_asmopcode(const s: string):boolean;override;
|
|
procedure handleopcode;override;
|
|
procedure BuildReference(oper : trvoperand);
|
|
procedure BuildOperand(oper : trvoperand);
|
|
procedure BuildOpCode(instr : trvinstruction);
|
|
procedure ReadAt(oper : trvoperand);
|
|
procedure ReadSym(oper : trvoperand);
|
|
end;
|
|
|
|
|
|
Implementation
|
|
|
|
uses
|
|
{ helpers }
|
|
cutils,
|
|
{ global }
|
|
globtype,globals,verbose,
|
|
systems,
|
|
{ aasm }
|
|
cpubase,aasmbase,aasmtai,aasmdata,aasmcpu,
|
|
{ symtable }
|
|
symconst,symdef,symsym,
|
|
{ parser }
|
|
procinfo,
|
|
rabase,rautils,
|
|
cgbase,cgobj,cgrv
|
|
;
|
|
|
|
procedure trv32attreader.ReadSym(oper : trvoperand);
|
|
var
|
|
tempstr, mangledname : string;
|
|
l,k,typesize : 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 trv32attreader.ReadAt(oper : trvoperand);
|
|
begin
|
|
{ check for ...@ }
|
|
if actasmtoken=AS_AT then
|
|
begin
|
|
if (oper.opr.ref.symbol=nil) and
|
|
(oper.opr.ref.offset = 0) then
|
|
Message(asmr_e_invalid_reference_syntax);
|
|
Consume(AS_AT);
|
|
if actasmtoken=AS_ID then
|
|
begin
|
|
{if upper(actasmpattern)='L' then
|
|
oper.opr.ref.refaddr:=addr_low
|
|
else if upper(actasmpattern)='HI' then
|
|
oper.opr.ref.refaddr:=addr_high
|
|
else if upper(actasmpattern)='HA' then
|
|
oper.opr.ref.refaddr:=addr_higha
|
|
else}
|
|
Message(asmr_e_invalid_reference_syntax);
|
|
Consume(AS_ID);
|
|
end
|
|
else
|
|
Message(asmr_e_invalid_reference_syntax);
|
|
end;
|
|
end;
|
|
|
|
|
|
Procedure trv32attreader.BuildReference(oper : trvoperand);
|
|
|
|
procedure Consume_RParen;
|
|
begin
|
|
if actasmtoken <> AS_RPAREN then
|
|
Begin
|
|
Message(asmr_e_invalid_reference_syntax);
|
|
RecoverConsume(true);
|
|
end
|
|
else
|
|
begin
|
|
Consume(AS_RPAREN);
|
|
if not (actasmtoken in [AS_COMMA,AS_SEPARATOR,AS_END]) then
|
|
Begin
|
|
Message(asmr_e_invalid_reference_syntax);
|
|
RecoverConsume(true);
|
|
end;
|
|
end;
|
|
end;
|
|
|
|
var
|
|
l : tcgint;
|
|
relsym: string;
|
|
asmsymtyp: tasmsymtype;
|
|
isflags: tindsymflags;
|
|
|
|
begin
|
|
Consume(AS_LPAREN);
|
|
Case actasmtoken of
|
|
AS_INTNUM,
|
|
AS_MINUS,
|
|
AS_PLUS:
|
|
Begin
|
|
{ offset(offset) is invalid }
|
|
If oper.opr.Ref.Offset <> 0 Then
|
|
Begin
|
|
Message(asmr_e_invalid_reference_syntax);
|
|
RecoverConsume(true);
|
|
End
|
|
Else
|
|
Begin
|
|
oper.opr.Ref.Offset:=BuildConstExpression(false,true);
|
|
Consume(AS_RPAREN);
|
|
if actasmtoken=AS_AT then
|
|
ReadAt(oper);
|
|
end;
|
|
exit;
|
|
End;
|
|
AS_REGISTER: { (reg ... }
|
|
Begin
|
|
if ((oper.opr.typ=OPR_REFERENCE) and (oper.opr.ref.base<>NR_NO)) or
|
|
((oper.opr.typ=OPR_LOCAL) and (oper.opr.localsym.localloc.loc<>LOC_REGISTER)) then
|
|
message(asmr_e_cannot_index_relative_var);
|
|
oper.opr.ref.base:=actasmregister;
|
|
Consume(AS_REGISTER);
|
|
Consume_RParen;
|
|
end; {end case }
|
|
AS_ID:
|
|
Begin
|
|
ReadSym(oper);
|
|
case actasmtoken of
|
|
AS_PLUS:
|
|
begin
|
|
{ add a constant expression? }
|
|
l:=BuildConstExpression(true,true);
|
|
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;
|
|
AS_MINUS:
|
|
begin
|
|
Consume(AS_MINUS);
|
|
BuildConstSymbolExpression(false,true,false,l,relsym,asmsymtyp);
|
|
if (relsym<>'') then
|
|
begin
|
|
if (oper.opr.typ = OPR_REFERENCE) then
|
|
oper.opr.ref.relsymbol:=current_asmdata.RefAsmSymbol(relsym,AT_DATA)
|
|
else
|
|
begin
|
|
Message(asmr_e_invalid_reference_syntax);
|
|
RecoverConsume(false);
|
|
end
|
|
end
|
|
else
|
|
begin
|
|
case oper.opr.typ of
|
|
OPR_CONSTANT :
|
|
dec(oper.opr.val,l);
|
|
OPR_LOCAL :
|
|
dec(oper.opr.localsymofs,l);
|
|
OPR_REFERENCE :
|
|
dec(oper.opr.ref.offset,l);
|
|
else
|
|
internalerror(2007092601);
|
|
end;
|
|
end;
|
|
end;
|
|
end;
|
|
Consume(AS_RPAREN);
|
|
if actasmtoken=AS_AT then
|
|
ReadAt(oper);
|
|
End;
|
|
AS_COMMA: { (, ... can either be scaling, or index }
|
|
Begin
|
|
Consume(AS_COMMA);
|
|
{ Index }
|
|
if (actasmtoken=AS_REGISTER) then
|
|
Begin
|
|
oper.opr.ref.index:=actasmregister;
|
|
Consume(AS_REGISTER);
|
|
{ check for scaling ... }
|
|
Consume_RParen;
|
|
end
|
|
else
|
|
begin
|
|
Message(asmr_e_invalid_reference_syntax);
|
|
RecoverConsume(false);
|
|
end;
|
|
end;
|
|
else
|
|
Begin
|
|
Message(asmr_e_invalid_reference_syntax);
|
|
RecoverConsume(false);
|
|
end;
|
|
end;
|
|
end;
|
|
|
|
|
|
Procedure trv32attreader.BuildOperand(oper : trvoperand);
|
|
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;
|
|
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;
|
|
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) and
|
|
(tabstractvarsym(oper.opr.localsym).owner.symtabletype=parasymtable) and
|
|
(current_procinfo.procdef.proccalloption<>pocall_register) then
|
|
Message(asmr_e_cannot_access_field_directly_for_parameters);
|
|
inc(oper.opr.localsymofs,l)
|
|
end;
|
|
OPR_CONSTANT :
|
|
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.DefineAsmSymbol(mangledname,AB_EXTERNAL,AT_FUNCTION,voidcodepointertype);
|
|
end
|
|
else
|
|
inc(oper.opr.val,l);
|
|
OPR_REFERENCE :
|
|
inc(oper.opr.ref.offset,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;
|
|
|
|
|
|
var
|
|
tempreg : tregister;
|
|
hl : tasmlabel;
|
|
ofs : aint;
|
|
refaddr: trefaddr;
|
|
Begin
|
|
expr:='';
|
|
|
|
refaddr:=addr_full;
|
|
if actasmtoken=AS_MOD then
|
|
begin
|
|
consume(AS_MOD);
|
|
|
|
if actasmtoken<>AS_ID then
|
|
begin
|
|
Message(asmr_e_invalid_reference_syntax);
|
|
RecoverConsume(false);
|
|
end
|
|
else
|
|
begin
|
|
if lower(actasmpattern)='pcrel_hi' then
|
|
refaddr:=addr_pcrel_hi20
|
|
else if lower(actasmpattern)='pcrel_lo' then
|
|
refaddr:=addr_pcrel_lo12
|
|
else if lower(actasmpattern)='hi' then
|
|
refaddr:=addr_hi20
|
|
else if lower(actasmpattern)='lo' then
|
|
refaddr:=addr_lo12
|
|
else
|
|
begin
|
|
Message(asmr_e_invalid_reference_syntax);
|
|
RecoverConsume(false);
|
|
end;
|
|
|
|
consume(AS_ID);
|
|
consume(AS_LPAREN);
|
|
end;
|
|
end;
|
|
|
|
case actasmtoken of
|
|
AS_LPAREN: { Memory reference or constant expression }
|
|
Begin
|
|
oper.InitRef;
|
|
BuildReference(oper);
|
|
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
|
|
{ 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 oper.SetupVar(expr,false) then
|
|
ReadAt(oper)
|
|
else
|
|
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;
|
|
|
|
AS_REGISTER: { Register, a variable reference or a constant reference }
|
|
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 }
|
|
|
|
if refaddr<>addr_full then
|
|
begin
|
|
if oper.opr.typ<>OPR_REFERENCE then
|
|
oper.InitRef;
|
|
|
|
oper.opr.ref.refaddr:=refaddr;
|
|
Consume(AS_RPAREN);
|
|
end;
|
|
end;
|
|
|
|
|
|
{*****************************************************************************
|
|
trv32attreader
|
|
*****************************************************************************}
|
|
|
|
procedure trv32attreader.BuildOpCode(instr : trvinstruction);
|
|
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
|
|
begin
|
|
{ condition operands doesn't set the operand but write to the
|
|
condition field of the instruction
|
|
}
|
|
if instr.Operands[operandnum].opr.typ<>OPR_NONE then
|
|
Inc(operandnum);
|
|
end;
|
|
Consume(AS_COMMA);
|
|
end;
|
|
AS_SEPARATOR,
|
|
AS_END : { End of asm operands for this opcode }
|
|
begin
|
|
break;
|
|
end;
|
|
else
|
|
BuildOperand(instr.Operands[operandnum] as trvoperand);
|
|
end; { end case }
|
|
until false;
|
|
if (operandnum=1) and (instr.Operands[operandnum].opr.typ=OPR_NONE) then
|
|
dec(operandnum);
|
|
instr.Ops:=operandnum;
|
|
end;
|
|
|
|
|
|
function trv32attreader.is_register(const s: string): boolean;
|
|
type
|
|
treg2str = record
|
|
name : string[3];
|
|
reg : tregister;
|
|
end;
|
|
|
|
const
|
|
extraregs : array[0..31] of treg2str = (
|
|
(name: 'A0'; reg : NR_X10),
|
|
(name: 'A1'; reg : NR_X11),
|
|
(name: 'A2'; reg : NR_X12),
|
|
(name: 'A3'; reg : NR_X13),
|
|
(name: 'A5'; reg : NR_X14),
|
|
(name: 'A6'; reg : NR_X15),
|
|
(name: 'A7'; reg : NR_X16),
|
|
(name: 'A8'; reg : NR_X17),
|
|
(name: 'RA'; reg : NR_X1),
|
|
(name: 'SP'; reg : NR_X2),
|
|
(name: 'GP'; reg : NR_X3),
|
|
(name: 'TP'; reg : NR_X4),
|
|
(name: 'T0'; reg : NR_X5),
|
|
(name: 'T1'; reg : NR_X6),
|
|
(name: 'T2'; reg : NR_X7),
|
|
(name: 'S0'; reg : NR_X8),
|
|
(name: 'FP'; reg : NR_X8),
|
|
(name: 'S1'; reg : NR_X9),
|
|
(name: 'S2'; reg : NR_X18),
|
|
(name: 'S3'; reg : NR_X19),
|
|
(name: 'S4'; reg : NR_X20),
|
|
(name: 'S5'; reg : NR_X21),
|
|
(name: 'S6'; reg : NR_X22),
|
|
(name: 'S7'; reg : NR_X23),
|
|
(name: 'S8'; reg : NR_X24),
|
|
(name: 'S9'; reg : NR_X25),
|
|
(name: 'S10';reg : NR_X26),
|
|
(name: 'S11';reg : NR_X27),
|
|
(name: 'T3'; reg : NR_X28),
|
|
(name: 'T4'; reg : NR_X29),
|
|
(name: 'T5'; reg : NR_X30),
|
|
(name: 'T6'; reg : NR_X31)
|
|
);
|
|
|
|
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;
|
|
|
|
|
|
function trv32attreader.is_asmopcode(const s: string):boolean;
|
|
var
|
|
cond : tasmcond;
|
|
hs : string;
|
|
|
|
Begin
|
|
{ making s a value parameter would break other assembler readers }
|
|
hs:=s;
|
|
is_asmopcode:=false;
|
|
|
|
{ clear op code }
|
|
actopcode:=A_None;
|
|
{ clear condition }
|
|
fillchar(actcondition,sizeof(actcondition),0);
|
|
|
|
{ check for direction hint }
|
|
actopcode := tasmop(ptruint(iasmops.find(hs)));
|
|
if actopcode <> A_NONE then
|
|
begin
|
|
actasmtoken:=AS_OPCODE;
|
|
is_asmopcode:=true;
|
|
exit;
|
|
end;
|
|
{ not found, check branch instructions }
|
|
if hs[1]='B' then
|
|
begin
|
|
{ we can search here without an extra table which is sorted by string length
|
|
because we take the whole remaining string without the leading B }
|
|
actopcode := A_Bxx;
|
|
for cond:=low(TAsmCond) to high(TAsmCond) do
|
|
if copy(hs,2,length(s)-1)=uppercond2str[cond] then
|
|
begin
|
|
actcondition:=cond;
|
|
actasmtoken:=AS_OPCODE;
|
|
is_asmopcode:=true;
|
|
exit;
|
|
end;
|
|
end;
|
|
end;
|
|
|
|
|
|
procedure trv32attreader.handleopcode;
|
|
var
|
|
instr : trvinstruction;
|
|
begin
|
|
instr:=trvinstruction.Create(trvoperand);
|
|
BuildOpcode(instr);
|
|
instr.condition := actcondition;
|
|
{
|
|
instr.AddReferenceSizes;
|
|
instr.SetInstructionOpsize;
|
|
instr.CheckOperandSizes;
|
|
}
|
|
instr.ConcatInstruction(curlist);
|
|
instr.Free;
|
|
end;
|
|
|
|
|
|
{*****************************************************************************
|
|
Initialize
|
|
*****************************************************************************}
|
|
|
|
const
|
|
asmmode_rv32_standard_info : tasmmodeinfo =
|
|
(
|
|
id : asmmode_standard;
|
|
idtxt : 'STANDARD';
|
|
casmreader : trv32attreader;
|
|
);
|
|
|
|
initialization
|
|
RegisterAsmMode(asmmode_rv32_standard_info);
|
|
end.
|