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70fe77ca7c
fpc/compiler/i386/ra386att.pas
peter 70fe77ca7c * procinfo unit contains tprocinfo 
* cginfo renamed to cgbase
  * moved cgmessage to verbose
  * fixed ppc and sparc compiles
2003-10-01 20:34:48 +00:00

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{
$Id$
Copyright (c) 1998-2002 by Carl Eric Codere and Peter Vreman
Does the parsing for the AT&T 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 Ra386att;
{$i fpcdefs.inc}
Interface
uses
node;
function assemble: tnode;
Implementation
uses
{ common }
cutils,cclasses,
{ global }
globtype,globals,verbose,
systems,
{ aasm }
cpubase,cpuinfo,aasmbase,aasmtai,aasmcpu,
{ symtable }
symconst,symbase,symtype,symsym,symtable,
{ pass 1 }
nbas,
{ parser }
scanner,
itx86att,
rax86,rautils,
procinfo,cgbase,cgobj
;
type
tasmtoken = (
AS_NONE,AS_LABEL,AS_LLABEL,AS_STRING,AS_INTNUM,
AS_REALNUM,AS_COMMA,AS_LPAREN,
AS_RPAREN,AS_COLON,AS_DOT,AS_PLUS,AS_MINUS,AS_STAR,
AS_SEPARATOR,AS_ID,AS_REGISTER,AS_OPCODE,AS_SLASH,AS_DOLLAR,
{------------------ Assembler directives --------------------}
AS_DB,AS_DW,AS_DD,AS_DQ,AS_GLOBAL,
AS_ALIGN,AS_BALIGN,AS_P2ALIGN,AS_ASCII,
AS_ASCIIZ,AS_LCOMM,AS_COMM,AS_SINGLE,AS_DOUBLE,AS_EXTENDED,
AS_DATA,AS_TEXT,AS_END,
{------------------ Assembler Operators --------------------}
AS_TYPE,AS_MOD,AS_SHL,AS_SHR,AS_NOT,AS_AND,AS_OR,AS_XOR,AS_NOR);
tasmkeyword = string[10];
const
{ These tokens should be modified accordingly to the modifications }
{ in the different enumerations. }
firstdirective = AS_DB;
lastdirective = AS_END;
token2str : array[tasmtoken] of tasmkeyword=(
'','Label','LLabel','string','integer',
'float',',','(',
')',':','.','+','-','*',
';','identifier','register','opcode','/','$',
'.byte','.word','.long','.quad','.globl',
'.align','.balign','.p2align','.ascii',
'.asciz','.lcomm','.comm','.single','.double','.tfloat',
'.data','.text','END',
'TYPE','%','<<','>>','!','&','|','^','~');
const
newline = #10;
firsttoken : boolean = TRUE;
var
_asmsorted : boolean;
curlist : TAAsmoutput;
c : char;
actasmtoken : tasmtoken;
prevasmtoken : tasmtoken;
actasmpattern : string;
actopcode : tasmop;
actasmregister : tregister;
actopsize : topsize;
actcondition : tasmcond;
iasmops : tdictionary;
Procedure SetupTables;
{ creates uppercased symbol tables for speed access }
var
i : tasmop;
str2opentry: tstr2opentry;
Begin
{ opcodes }
iasmops:=TDictionary.Create;
iasmops.delete_doubles:=true;
for i:=firstop to lastop do
begin
str2opentry:=tstr2opentry.createname(upper(gas_op2str[i]));
str2opentry.op:=i;
iasmops.insert(str2opentry);
end;
end;
{---------------------------------------------------------------------}
{ Routines for the tokenizing }
{---------------------------------------------------------------------}
function is_asmopcode(const s: string):boolean;
const
{ We need first to check the long prefixes, else we get probs
with things like movsbl }
att_sizesuffixstr : array[0..9] of string[2] = (
'','BW','BL','WL','B','W','L','S','Q','T'
);
att_sizesuffix : array[0..9] of topsize = (
S_NO,S_BW,S_BL,S_WL,S_B,S_W,S_L,S_FS,S_IQ,S_FX
);
att_sizefpusuffix : array[0..9] of topsize = (
S_NO,S_NO,S_NO,S_NO,S_NO,S_NO,S_FL,S_FS,S_IQ,S_FX
);
att_sizefpuintsuffix : array[0..9] of topsize = (
S_NO,S_NO,S_NO,S_NO,S_NO,S_NO,S_IL,S_IS,S_IQ,S_NO
);
var
str2opentry: tstr2opentry;
cond : string[4];
cnd : tasmcond;
len,
j,
sufidx : longint;
Begin
is_asmopcode:=FALSE;
actopcode:=A_None;
actcondition:=C_None;
actopsize:=S_NO;
{ search for all possible suffixes }
for sufidx:=low(att_sizesuffixstr) to high(att_sizesuffixstr) do
begin
len:=length(s)-length(att_sizesuffixstr[sufidx]);
if copy(s,len+1,length(att_sizesuffixstr[sufidx]))=att_sizesuffixstr[sufidx] then
begin
{ here we search the entire table... }
str2opentry:=nil;
if {(length(s)>0) and} (len>0) then
str2opentry:=tstr2opentry(iasmops.search(copy(s,1,len)));
if assigned(str2opentry) then
begin
actopcode:=str2opentry.op;
if gas_needsuffix[actopcode]=attsufFPU then
actopsize:=att_sizefpusuffix[sufidx]
else if gas_needsuffix[actopcode]=attsufFPUint then
actopsize:=att_sizefpuintsuffix[sufidx]
else
actopsize:=att_sizesuffix[sufidx];
actasmtoken:=AS_OPCODE;
is_asmopcode:=TRUE;
exit;
end;
{ not found, check condition opcodes }
j:=0;
while (j<CondAsmOps) do
begin
if Copy(s,1,Length(CondAsmOpStr[j]))=CondAsmOpStr[j] then
begin
cond:=Copy(s,Length(CondAsmOpStr[j])+1,len-Length(CondAsmOpStr[j]));
if cond<>'' then
begin
for cnd:=low(TasmCond) to high(TasmCond) do
if Cond=Upper(cond2str[cnd]) then
begin
actopcode:=CondASmOp[j];
if gas_needsuffix[actopcode]=attsufFPU then
actopsize:=att_sizefpusuffix[sufidx]
else if gas_needsuffix[actopcode]=attsufFPUint then
actopsize:=att_sizefpuintsuffix[sufidx]
else
actopsize:=att_sizesuffix[sufidx];
actcondition:=cnd;
actasmtoken:=AS_OPCODE;
is_asmopcode:=TRUE;
exit;
end;
end;
end;
inc(j);
end;
end;
end;
end;
Function is_asmdirective(const s: string):boolean;
var
i : tasmtoken;
hs : string;
Begin
{ GNU as is also not casesensitive with this }
hs:=lower(s);
for i:=firstdirective to lastdirective do
if hs=token2str[i] then
begin
actasmtoken:=i;
is_asmdirective:=true;
exit;
end;
is_asmdirective:=false;
end;
function is_register(const s:string):boolean;
begin
is_register:=false;
actasmregister:=gas_regnum_search(lower(s));
if actasmregister<>NR_NO then
begin
is_register:=true;
actasmtoken:=AS_REGISTER;
end;
end;
Function is_locallabel(const s: string):boolean;
begin
is_locallabel:=(length(s)>=2) and (s[1]='.') and (s[2]='L');
end;
Procedure GetToken;
var
len : longint;
srsym : tsym;
srsymtable : tsymtable;
begin
{ save old token and reset new token }
prevasmtoken:=actasmtoken;
actasmtoken:=AS_NONE;
{ reset }
actasmpattern:='';
{ while space and tab , continue scan... }
while c in [' ',#9] do
c:=current_scanner.asmgetchar;
{ get token pos }
if not (c in [newline,#13,'{',';']) then
current_scanner.gettokenpos;
{ Local Label, Label, Directive, Prefix or Opcode }
if firsttoken and not(c in [newline,#13,'{',';']) then
begin
firsttoken:=FALSE;
len:=0;
{ directive or local label }
if c = '.' then
begin
inc(len);
actasmpattern[len]:=c;
{ Let us point to the next character }
c:=current_scanner.asmgetchar;
while c in ['A'..'Z','a'..'z','0'..'9','_','$'] do
begin
inc(len);
actasmpattern[len]:=c;
c:=current_scanner.asmgetchar;
end;
actasmpattern[0]:=chr(len);
{ this is a local label... }
if (c=':') and is_locallabel(actasmpattern) then
Begin
{ local variables are case sensitive }
actasmtoken:=AS_LLABEL;
c:=current_scanner.asmgetchar;
firsttoken:=true;
exit;
end
{ must be a directive }
else
Begin
{ directives are case sensitive!! }
if is_asmdirective(actasmpattern) then
exit;
Message1(asmr_e_not_directive_or_local_symbol,actasmpattern);
end;
end;
{ only opcodes and global labels are allowed now. }
while c in ['A'..'Z','a'..'z','0'..'9','_'] do
begin
inc(len);
actasmpattern[len]:=c;
c:=current_scanner.asmgetchar;
end;
actasmpattern[0]:=chr(len);
{ Label ? }
if c = ':' then
begin
actasmtoken:=AS_LABEL;
{ let us point to the next character }
c:=current_scanner.asmgetchar;
firsttoken:=true;
exit;
end;
{ Opcode ? }
If is_asmopcode(upper(actasmpattern)) then
Begin
uppervar(actasmpattern);
exit;
end;
{ End of assemblerblock ? }
if upper(actasmpattern) = 'END' then
begin
actasmtoken:=AS_END;
exit;
end;
message1(asmr_e_unknown_opcode,actasmpattern);
actasmtoken:=AS_NONE;
end
else { else firsttoken }
{ Here we must handle all possible cases }
begin
case c of
'.' : { possiblities : - local label reference , such as in jmp @local1 }
{ - field of object/record }
{ - directive. }
begin
if (prevasmtoken in [AS_ID,AS_RPAREN]) then
begin
c:=current_scanner.asmgetchar;
actasmtoken:=AS_DOT;
exit;
end;
actasmpattern:=c;
c:=current_scanner.asmgetchar;
while c in ['A'..'Z','a'..'z','0'..'9','_','$'] do
begin
actasmpattern:=actasmpattern + c;
c:=current_scanner.asmgetchar;
end;
if is_asmdirective(actasmpattern) then
exit;
{ local label references and directives }
{ are case sensitive }
actasmtoken:=AS_ID;
exit;
end;
{ identifier, register, prefix or directive }
'_','A'..'Z','a'..'z':
begin
len:=0;
while c in ['A'..'Z','a'..'z','0'..'9','_','$'] do
begin
inc(len);
actasmpattern[len]:=c;
c:=current_scanner.asmgetchar;
end;
actasmpattern[0]:=chr(len);
uppervar(actasmpattern);
{ Opcode, can only be when the previous was a prefix }
If is_prefix(actopcode) and is_asmopcode(actasmpattern) then
Begin
uppervar(actasmpattern);
exit;
end;
{ check for end which is a reserved word unlike the opcodes }
if actasmpattern = 'END' then
Begin
actasmtoken:=AS_END;
exit;
end;
if actasmpattern = 'TYPE' then
Begin
actasmtoken:=AS_TYPE;
exit;
end;
{ if next is a '.' and this is a unitsym then we also need to
parse the identifier }
if (c='.') then
begin
searchsym(actasmpattern,srsym,srsymtable);
if assigned(srsym) and
(srsym.typ=unitsym) and
(srsym.owner.unitid=0) then
begin
actasmpattern:=actasmpattern+c;
c:=current_scanner.asmgetchar;
while c in ['A'..'Z','a'..'z','0'..'9','_','$'] do
begin
actasmpattern:=actasmpattern + upcase(c);
c:=current_scanner.asmgetchar;
end;
end;
end;
actasmtoken:=AS_ID;
exit;
end;
'%' : { register or modulo }
begin
len:=1;
actasmpattern[len]:='%';
c:=current_scanner.asmgetchar;
{ to be a register there must be a letter and not a number }
if c in ['0'..'9'] then
begin
actasmtoken:=AS_MOD;
end
else
begin
while c in ['a'..'z','A'..'Z','0'..'9'] do
Begin
inc(len);
actasmpattern[len]:=c;
c:=current_scanner.asmgetchar;
end;
actasmpattern[0]:=chr(len);
uppervar(actasmpattern);
if (actasmpattern = '%ST') and (c='(') then
Begin
actasmpattern:=actasmpattern+c;
c:=current_scanner.asmgetchar;
if c in ['0'..'9'] then
actasmpattern:=actasmpattern + c
else
Message(asmr_e_invalid_fpu_register);
c:=current_scanner.asmgetchar;
if c <> ')' then
Message(asmr_e_invalid_fpu_register)
else
Begin
actasmpattern:=actasmpattern + c;
c:=current_scanner.asmgetchar; { let us point to next character. }
end;
end;
if is_register(actasmpattern) then
exit;
Message(asmr_e_invalid_register);
actasmtoken:=AS_NONE;
end;
end;
'1'..'9': { integer number }
begin
len:=0;
while c in ['0'..'9'] do
Begin
inc(len);
actasmpattern[len]:=c;
c:=current_scanner.asmgetchar;
end;
actasmpattern[0]:=chr(len);
actasmpattern:=tostr(ValDecimal(actasmpattern));
actasmtoken:=AS_INTNUM;
exit;
end;
'0' : { octal,hexa,real or binary number. }
begin
actasmpattern:=c;
c:=current_scanner.asmgetchar;
case upcase(c) of
'B': { binary }
Begin
c:=current_scanner.asmgetchar;
while c in ['0','1'] do
Begin
actasmpattern:=actasmpattern + c;
c:=current_scanner.asmgetchar;
end;
actasmpattern:=tostr(ValBinary(actasmpattern));
actasmtoken:=AS_INTNUM;
exit;
end;
'D': { real }
Begin
c:=current_scanner.asmgetchar;
{ get ridd of the 0d }
if (c in ['+','-']) then
begin
actasmpattern:=c;
c:=current_scanner.asmgetchar;
end
else
actasmpattern:='';
while c in ['0'..'9'] do
Begin
actasmpattern:=actasmpattern + c;
c:=current_scanner.asmgetchar;
end;
if c='.' then
begin
actasmpattern:=actasmpattern + c;
c:=current_scanner.asmgetchar;
while c in ['0'..'9'] do
Begin
actasmpattern:=actasmpattern + c;
c:=current_scanner.asmgetchar;
end;
if upcase(c) = 'E' then
begin
actasmpattern:=actasmpattern + c;
c:=current_scanner.asmgetchar;
if (c in ['+','-']) then
begin
actasmpattern:=actasmpattern + c;
c:=current_scanner.asmgetchar;
end;
while c in ['0'..'9'] do
Begin
actasmpattern:=actasmpattern + c;
c:=current_scanner.asmgetchar;
end;
end;
actasmtoken:=AS_REALNUM;
exit;
end
else
begin
Message1(asmr_e_invalid_float_const,actasmpattern+c);
actasmtoken:=AS_NONE;
end;
end;
'X': { hexadecimal }
Begin
c:=current_scanner.asmgetchar;
while c in ['0'..'9','a'..'f','A'..'F'] do
Begin
actasmpattern:=actasmpattern + c;
c:=current_scanner.asmgetchar;
end;
actasmpattern:=tostr(ValHexaDecimal(actasmpattern));
actasmtoken:=AS_INTNUM;
exit;
end;
'1'..'7': { octal }
begin
actasmpattern:=actasmpattern + c;
while c in ['0'..'7'] do
Begin
actasmpattern:=actasmpattern + c;
c:=current_scanner.asmgetchar;
end;
actasmpattern:=tostr(ValOctal(actasmpattern));
actasmtoken:=AS_INTNUM;
exit;
end;
else { octal number zero value...}
Begin
actasmpattern:=tostr(ValOctal(actasmpattern));
actasmtoken:=AS_INTNUM;
exit;
end;
end; { end case }
end;
'&' :
begin
c:=current_scanner.asmgetchar;
actasmtoken:=AS_AND;
end;
'''' : { char }
begin
current_scanner.in_asm_string:=true;
actasmpattern:='';
repeat
c:=current_scanner.asmgetchar;
case c of
'\' :
begin
{ copy also the next char so \" is parsed correctly }
actasmpattern:=actasmpattern+c;
c:=current_scanner.asmgetchar;
actasmpattern:=actasmpattern+c;
end;
'''' :
begin
c:=current_scanner.asmgetchar;
break;
end;
newline:
Message(scan_f_string_exceeds_line);
else
actasmpattern:=actasmpattern+c;
end;
until false;
actasmpattern:=EscapeToPascal(actasmpattern);
actasmtoken:=AS_STRING;
current_scanner.in_asm_string:=false;
exit;
end;
'"' : { string }
begin
current_scanner.in_asm_string:=true;
actasmpattern:='';
repeat
c:=current_scanner.asmgetchar;
case c of
'\' :
begin
{ copy also the next char so \" is parsed correctly }
actasmpattern:=actasmpattern+c;
c:=current_scanner.asmgetchar;
actasmpattern:=actasmpattern+c;
end;
'"' :
begin
c:=current_scanner.asmgetchar;
break;
end;
newline:
Message(scan_f_string_exceeds_line);
else
actasmpattern:=actasmpattern+c;
end;
until false;
actasmpattern:=EscapeToPascal(actasmpattern);
actasmtoken:=AS_STRING;
current_scanner.in_asm_string:=false;
exit;
end;
'$' :
begin
actasmtoken:=AS_DOLLAR;
c:=current_scanner.asmgetchar;
exit;
end;
',' :
begin
actasmtoken:=AS_COMMA;
c:=current_scanner.asmgetchar;
exit;
end;
'<' :
begin
actasmtoken:=AS_SHL;
c:=current_scanner.asmgetchar;
if c = '<' then
c:=current_scanner.asmgetchar;
exit;
end;
'>' :
begin
actasmtoken:=AS_SHL;
c:=current_scanner.asmgetchar;
if c = '>' then
c:=current_scanner.asmgetchar;
exit;
end;
'|' :
begin
actasmtoken:=AS_OR;
c:=current_scanner.asmgetchar;
exit;
end;
'^' :
begin
actasmtoken:=AS_XOR;
c:=current_scanner.asmgetchar;
exit;
end;
'(' :
begin
actasmtoken:=AS_LPAREN;
c:=current_scanner.asmgetchar;
exit;
end;
')' :
begin
actasmtoken:=AS_RPAREN;
c:=current_scanner.asmgetchar;
exit;
end;
':' :
begin
actasmtoken:=AS_COLON;
c:=current_scanner.asmgetchar;
exit;
end;
'+' :
begin
actasmtoken:=AS_PLUS;
c:=current_scanner.asmgetchar;
exit;
end;
'-' :
begin
actasmtoken:=AS_MINUS;
c:=current_scanner.asmgetchar;
exit;
end;
'*' :
begin
actasmtoken:=AS_STAR;
c:=current_scanner.asmgetchar;
exit;
end;
'/' :
begin
c:=current_scanner.asmgetchar;
actasmtoken:=AS_SLASH;
exit;
end;
'{',#13,newline,';' :
begin
{ the comment is read by asmgetchar }
c:=current_scanner.asmgetchar;
firsttoken:=TRUE;
actasmtoken:=AS_SEPARATOR;
exit;
end;
else
current_scanner.illegal_char(c);
end;
end;
end;
function consume(t : tasmtoken):boolean;
begin
Consume:=true;
if t<>actasmtoken then
begin
Message2(scan_f_syn_expected,token2str[t],token2str[actasmtoken]);
Consume:=false;
end;
repeat
gettoken;
until actasmtoken<>AS_NONE;
end;
procedure RecoverConsume(allowcomma:boolean);
begin
While not (actasmtoken in [AS_SEPARATOR,AS_END]) do
begin
if allowcomma and (actasmtoken=AS_COMMA) then
break;
Consume(actasmtoken);
end;
end;
{*****************************************************************************
Parsing Helpers
*****************************************************************************}
Procedure BuildRecordOffsetSize(const expr: string;var offset:longint;var size:longint);
{ Description: This routine builds up a record offset after a AS_DOT }
{ token is encountered. }
{ On entry actasmtoken should be equal to AS_DOT }
var
s : string;
Begin
offset:=0;
size:=0;
s:=expr;
while (actasmtoken=AS_DOT) do
begin
Consume(AS_DOT);
if actasmtoken=AS_ID then
s:=s+'.'+actasmpattern;
if not Consume(AS_ID) then
begin
RecoverConsume(true);
break;
end;
end;
if not GetRecordOffsetSize(s,offset,size) then
Message(asmr_e_building_record_offset);
end;
Procedure BuildConstSymbolExpression(allowref,betweenbracket,needofs:boolean;var value:longint;var asmsym:string);
var
hs,tempstr,expr : string;
parenlevel,l,k : longint;
errorflag : boolean;
prevtok : tasmtoken;
sym : tsym;
srsymtable : tsymtable;
hl : tasmlabel;
Begin
asmsym:='';
value:=0;
errorflag:=FALSE;
tempstr:='';
expr:='';
parenlevel:=0;
Repeat
Case actasmtoken of
AS_LPAREN:
Begin
{ Exit if ref? }
if allowref and (prevasmtoken in [AS_INTNUM,AS_ID]) then
break;
Consume(AS_LPAREN);
expr:=expr + '(';
inc(parenlevel);
end;
AS_RPAREN:
Begin
{ end of ref ? }
if (parenlevel=0) and betweenbracket then
break;
Consume(AS_RPAREN);
expr:=expr + ')';
dec(parenlevel);
end;
AS_SHL:
Begin
Consume(AS_SHL);
expr:=expr + '<';
end;
AS_SHR:
Begin
Consume(AS_SHR);
expr:=expr + '>';
end;
AS_SLASH:
Begin
Consume(AS_SLASH);
expr:=expr + '/';
end;
AS_MOD:
Begin
Consume(AS_MOD);
expr:=expr + '%';
end;
AS_STAR:
Begin
Consume(AS_STAR);
expr:=expr + '*';
end;
AS_PLUS:
Begin
Consume(AS_PLUS);
expr:=expr + '+';
end;
AS_MINUS:
Begin
Consume(AS_MINUS);
expr:=expr + '-';
end;
AS_AND:
Begin
Consume(AS_AND);
expr:=expr + '&';
end;
AS_NOT:
Begin
Consume(AS_NOT);
expr:=expr + '~';
end;
AS_XOR:
Begin
Consume(AS_XOR);
expr:=expr + '^';
end;
AS_OR:
Begin
Consume(AS_OR);
expr:=expr + '|';
end;
AS_INTNUM:
Begin
expr:=expr + actasmpattern;
Consume(AS_INTNUM);
end;
AS_DOLLAR:
begin
Consume(AS_DOLLAR);
if actasmtoken<>AS_ID then
Message(asmr_e_dollar_without_identifier);
end;
AS_STRING:
Begin
l:=0;
case Length(actasmpattern) of
1 :
l:=ord(actasmpattern[1]);
2 :
l:=ord(actasmpattern[2]) + ord(actasmpattern[1]) shl 8;
3 :
l:=ord(actasmpattern[3]) +
Ord(actasmpattern[2]) shl 8 + ord(actasmpattern[1]) shl 16;
4 :
l:=ord(actasmpattern[4]) + ord(actasmpattern[3]) shl 8 +
Ord(actasmpattern[2]) shl 16 + ord(actasmpattern[1]) shl 24;
else
Message1(asmr_e_invalid_string_as_opcode_operand,actasmpattern);
end;
str(l, tempstr);
expr:=expr + tempstr;
Consume(AS_STRING);
end;
AS_TYPE:
begin
l:=0;
Consume(AS_TYPE);
if actasmtoken<>AS_ID then
Message(asmr_e_type_without_identifier)
else
begin
tempstr:=actasmpattern;
Consume(AS_ID);
if actasmtoken=AS_DOT then
BuildRecordOffsetSize(tempstr,k,l)
else
begin
searchsym(tempstr,sym,srsymtable);
if assigned(sym) then
begin
case sym.typ of
varsym :
l:=tvarsym(sym).getsize;
typedconstsym :
l:=ttypedconstsym(sym).getsize;
typesym :
l:=ttypesym(sym).restype.def.size;
else
Message(asmr_e_wrong_sym_type);
end;
end
else
Message1(sym_e_unknown_id,tempstr);
end;
end;
str(l, tempstr);
expr:=expr + tempstr;
end;
AS_ID:
Begin
hs:='';
tempstr:=actasmpattern;
prevtok:=prevasmtoken;
consume(AS_ID);
if SearchIConstant(tempstr,l) then
begin
str(l, tempstr);
expr:=expr + tempstr;
end
else
begin
if is_locallabel(tempstr) then
begin
CreateLocalLabel(tempstr,hl,false);
hs:=hl.name
end
else
if SearchLabel(tempstr,hl,false) then
hs:=hl.name
else
begin
searchsym(tempstr,sym,srsymtable);
if assigned(sym) then
begin
case sym.typ of
varsym :
begin
if sym.owner.symtabletype in [localsymtable,parasymtable] then
Message(asmr_e_no_local_or_para_allowed);
hs:=tvarsym(sym).mangledname;
end;
typedconstsym :
hs:=ttypedconstsym(sym).mangledname;
procsym :
begin
if Tprocsym(sym).procdef_count>1 then
Message(asmr_w_calling_overload_func);
hs:=tprocsym(sym).first_procdef.mangledname;
end;
typesym :
begin
if not(ttypesym(sym).restype.def.deftype in [recorddef,objectdef]) then
Message(asmr_e_wrong_sym_type);
end;
else
Message(asmr_e_wrong_sym_type);
end;
end
else
Message1(sym_e_unknown_id,tempstr);
end;
{ symbol found? }
if hs<>'' then
begin
if needofs and (prevtok<>AS_DOLLAR) then
Message(asmr_e_need_dollar);
if asmsym='' then
asmsym:=hs
else
Message(asmr_e_cant_have_multiple_relocatable_symbols);
if (expr='') or (expr[length(expr)]='+') then
begin
{ don't remove the + if there could be a record field }
if actasmtoken<>AS_DOT then
delete(expr,length(expr),1);
end
else
Message(asmr_e_only_add_relocatable_symbol);
end;
if actasmtoken=AS_DOT then
begin
BuildRecordOffsetSize(tempstr,l,k);
str(l, tempstr);
expr:=expr + tempstr;
end
else
begin
if (expr='') or (expr[length(expr)] in ['+','-','/','*']) then
delete(expr,length(expr),1);
end;
end;
{ check if there are wrong operator used like / or mod etc. }
if (hs<>'') and not(actasmtoken in [AS_MINUS,AS_PLUS,AS_COMMA,AS_SEPARATOR,AS_LPAREN,AS_END]) then
Message(asmr_e_only_add_relocatable_symbol);
end;
AS_END,
AS_SEPARATOR,
AS_COMMA:
Begin
break;
end;
else
Begin
{ write error only once. }
if not errorflag then
Message(asmr_e_invalid_constant_expression);
{ consume tokens until we find COMMA or SEPARATOR }
Consume(actasmtoken);
errorflag:=TRUE;
end;
end;
Until false;
{ calculate expression }
if not ErrorFlag then
value:=CalculateExpression(expr)
else
value:=0;
end;
Function BuildConstExpression(allowref,betweenbracket:boolean): longint;
var
l : longint;
hs : string;
begin
BuildConstSymbolExpression(allowref,betweenbracket,false,l,hs);
if hs<>'' then
Message(asmr_e_relocatable_symbol_not_allowed);
BuildConstExpression:=l;
end;
{****************************************************************************
T386ATTOperand
****************************************************************************}
type
T386ATTOperand=class(T386Operand)
Procedure BuildOperand;override;
private
Procedure BuildReference;
Procedure BuildConstant;
end;
Procedure T386ATTOperand.BuildReference;
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;
procedure Consume_Scale;
var
l : longint;
begin
{ we have to process the scaling }
l:=BuildConstExpression(false,true);
if ((l = 2) or (l = 4) or (l = 8) or (l = 1)) then
opr.ref.scalefactor:=l
else
Begin
Message(asmr_e_wrong_scale_factor);
opr.ref.scalefactor:=0;
end;
end;
Begin
Consume(AS_LPAREN);
Case actasmtoken of
AS_INTNUM,
AS_MINUS,
AS_PLUS: { absolute offset, such as fs:(0x046c) }
Begin
{ offset(offset) is invalid }
If opr.Ref.Offset <> 0 Then
Begin
Message(asmr_e_invalid_reference_syntax);
RecoverConsume(true);
End
Else
Begin
opr.Ref.Offset:=BuildConstExpression(false,true);
Consume_RParen;
end;
exit;
End;
AS_REGISTER: { (reg ... }
Begin
{ Check if there is already a base (mostly ebp,esp) than this is
not allowed,becuase it will give crashing code }
if (opr.ref.base<>NR_NO) then
message(asmr_e_cannot_index_relative_var);
opr.ref.base:=actasmregister;
Consume(AS_REGISTER);
{ can either be a register or a right parenthesis }
{ (reg) }
if actasmtoken=AS_RPAREN then
Begin
Consume_RParen;
exit;
end;
{ (reg,reg .. }
Consume(AS_COMMA);
if actasmtoken=AS_REGISTER then
Begin
opr.ref.index:=actasmregister;
Consume(AS_REGISTER);
{ check for scaling ... }
case actasmtoken of
AS_RPAREN:
Begin
Consume_RParen;
exit;
end;
AS_COMMA:
Begin
Consume(AS_COMMA);
Consume_Scale;
Consume_RParen;
end;
else
Begin
Message(asmr_e_invalid_reference_syntax);
RecoverConsume(false);
end;
end; { end case }
end
else
Begin
Message(asmr_e_invalid_reference_syntax);
RecoverConsume(false);
end;
end; {end case }
AS_COMMA: { (, ... can either be scaling, or index }
Begin
Consume(AS_COMMA);
{ Index }
if (actasmtoken=AS_REGISTER) then
Begin
opr.ref.index:=actasmregister;
Consume(AS_REGISTER);
{ check for scaling ... }
case actasmtoken of
AS_RPAREN:
Begin
Consume_RParen;
exit;
end;
AS_COMMA:
Begin
Consume(AS_COMMA);
Consume_Scale;
Consume_RParen;
end;
else
Begin
Message(asmr_e_invalid_reference_syntax);
RecoverConsume(false);
end;
end; {end case }
end
{ Scaling }
else
Begin
Consume_Scale;
Consume_RParen;
exit;
end;
end;
else
Begin
Message(asmr_e_invalid_reference_syntax);
RecoverConsume(false);
end;
end;
end;
Procedure T386ATTOperand.BuildConstant;
var
l : longint;
tempstr : string;
begin
BuildConstSymbolExpression(false,false,true,l,tempstr);
if tempstr<>'' then
begin
opr.typ:=OPR_SYMBOL;
opr.symofs:=l;
opr.symbol:=objectlibrary.newasmsymbol(tempstr);
end
else
begin
opr.typ:=OPR_CONSTANT;
opr.val:=l;
end;
end;
Procedure T386ATTOperand.BuildOperand;
var
tempstr,tempstr2,
expr : string;
l,k : longint;
procedure AddLabelOperand(hl:tasmlabel);
begin
if not(actasmtoken in [AS_PLUS,AS_MINUS,AS_LPAREN]) and
is_calljmp(actopcode) then
begin
opr.typ:=OPR_SYMBOL;
opr.symbol:=hl;
end
else
begin
InitRef;
opr.ref.symbol:=hl;
end;
end;
procedure MaybeRecordOffset;
var
hasdot : boolean;
l,
toffset,
tsize : longint;
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);
inc(l,toffset);
SetSize(tsize,true);
end;
end;
if actasmtoken in [AS_PLUS,AS_MINUS] then
inc(l,BuildConstExpression(true,false));
case opr.typ of
OPR_LOCAL :
begin
{ don't allow direct access to fields of parameters, becuase that
will generate buggy code. Allow it only for explicit typecasting }
if hasdot and
(not hastype) and
(tvarsym(pointer(opr.ref.symbol)).owner.symtabletype=parasymtable) then
Message(asmr_e_cannot_access_field_directly_for_parameters);
inc(opr.localsymofs,l)
end;
OPR_CONSTANT :
inc(opr.val,l);
OPR_REFERENCE :
inc(opr.ref.offset,l);
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
opr.ref.offset:=BuildConstExpression(True,False);
if actasmtoken<>AS_LPAREN then
Message(asmr_e_invalid_reference_syntax)
else
BuildReference;
end;
AS_LPAREN:
BuildReference;
AS_ID: { only a variable is allowed ... }
Begin
tempstr:=actasmpattern;
Consume(AS_ID);
{ typecasting? }
if (actasmtoken=AS_LPAREN) and
SearchType(tempstr) then
begin
hastype:=true;
Consume(AS_LPAREN);
tempstr2:=actasmpattern;
Consume(AS_ID);
Consume(AS_RPAREN);
if not SetupVar(tempstr2,false) then
Message1(sym_e_unknown_id,tempstr2);
end
else
if not SetupVar(tempstr,false) then
Message1(sym_e_unknown_id,tempstr);
{ record.field ? }
if actasmtoken=AS_DOT then
begin
BuildRecordOffsetSize(tempstr,l,k);
inc(opr.ref.offset,l);
end;
case actasmtoken of
AS_END,
AS_SEPARATOR,
AS_COMMA: ;
AS_LPAREN: BuildReference;
else
Begin
Message(asmr_e_invalid_reference_syntax);
Consume(actasmtoken);
end;
end; {end case }
end;
else
MaybeBuildReference:=false;
end; { end case }
end;
const
regsize_2_size: array[S_B..S_L] of longint = (1,2,4);
var
tempreg : tregister;
hl : tasmlabel;
Begin
expr:='';
case actasmtoken of
AS_LPAREN: { Memory reference or constant expression }
Begin
InitRef;
BuildReference;
end;
AS_DOLLAR: { Constant expression }
Begin
Consume(AS_DOLLAR);
BuildConstant;
end;
AS_INTNUM,
AS_MINUS,
AS_PLUS:
Begin
{ Constant memory offset }
{ This must absolutely be followed by ( }
InitRef;
opr.ref.offset:=BuildConstExpression(True,False);
if actasmtoken<>AS_LPAREN then
Message(asmr_e_invalid_reference_syntax)
else
BuildReference;
end;
AS_STAR: { Call from memory address }
Begin
Consume(AS_STAR);
if actasmtoken=AS_REGISTER then
begin
opr.typ:=OPR_REGISTER;
opr.reg:=actasmregister;
SetSize(regsize_2_size[reg2opsize(actasmregister)],true);
Consume(AS_REGISTER);
end
else
begin
InitRef;
if not MaybeBuildReference then
Message(asmr_e_syn_operand);
end;
{ this is only allowed for call's and jmp's }
if not is_calljmp(actopcode) then
Message(asmr_e_syn_operand);
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 (opr.typ in [OPR_NONE,OPR_CONSTANT]) then
Message(asmr_e_invalid_operand_type);
BuildConstant;
end
else
begin
InitRef;
expr:=actasmpattern;
Consume(AS_ID);
{ typecasting? }
if (actasmtoken=AS_LPAREN) and
SearchType(expr) then
begin
hastype:=true;
Consume(AS_LPAREN);
tempstr:=actasmpattern;
Consume(AS_ID);
Consume(AS_RPAREN);
if SetupVar(tempstr,false) then
begin
MaybeRecordOffset;
{ add a constant expression? }
if (actasmtoken=AS_PLUS) then
begin
l:=BuildConstExpression(true,false);
if opr.typ=OPR_CONSTANT then
inc(opr.val,l)
else
inc(opr.ref.offset,l);
end
end
else
Message1(sym_e_unknown_id,tempstr);
end
else
begin
if SetupVar(expr,false) then
begin
MaybeRecordOffset;
{ add a constant expression? }
if (actasmtoken=AS_PLUS) then
begin
l:=BuildConstExpression(true,false);
case opr.typ of
OPR_CONSTANT :
inc(opr.val,l);
OPR_LOCAL :
inc(opr.localsymofs,l);
OPR_REFERENCE :
inc(opr.ref.offset,l);
else
internalerror(200309202);
end;
end
end
else
Begin
{ look for special symbols ... }
if expr = '__RESULT' then
SetUpResult
else
if expr = '__SELF' then
SetupSelf
else
if expr = '__OLDEBP' then
SetupOldEBP
else
{ check for direct symbolic names }
{ only if compiling the system unit }
if (cs_compilesystem in aktmoduleswitches) then
begin
if not SetupDirectVar(expr) then
Begin
{ not found, finally ... add it anyways ... }
Message1(asmr_w_id_supposed_external,expr);
opr.ref.symbol:=objectlibrary.newasmsymbol(expr);
end;
end
else
Message1(sym_e_unknown_id,expr);
end;
end;
end;
end;
{ Do we have a indexing reference, then parse it also }
if actasmtoken=AS_LPAREN then
begin
if (opr.typ=OPR_CONSTANT) then
begin
l:=opr.val;
opr.typ:=OPR_REFERENCE;
Fillchar(opr.ref,sizeof(treference),0);
opr.Ref.Offset:=l;
end;
BuildReference;
end;
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 = AS_COLON then
Begin
Consume(AS_COLON);
InitRef;
opr.ref.segment:=tempreg;
{ This must absolutely be followed by a reference }
if not MaybeBuildReference then
Begin
Message(asmr_e_invalid_seg_override);
Consume(actasmtoken);
end;
end
{ Simple register }
else if (actasmtoken in [AS_END,AS_SEPARATOR,AS_COMMA]) then
Begin
if not (opr.typ in [OPR_NONE,OPR_REGISTER]) then
Message(asmr_e_invalid_operand_type);
opr.typ:=OPR_REGISTER;
opr.reg:=tempreg;
SetSize(tcgsize2size[cg.reg_cgsize(opr.reg)],true);
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;
{*****************************************************************************
T386ATTInstruction
*****************************************************************************}
type
T386AttInstruction=class(T386Instruction)
procedure InitOperands;override;
procedure BuildOpcode;override;
end;
procedure T386AttInstruction.InitOperands;
var
i : longint;
begin
OpOrder:=op_att;
for i:=1to max_operands do
Operands[i]:=T386AttOperand.Create;
end;
Procedure T386AttInstruction.BuildOpCode;
var
operandnum : longint;
PrefixOp,OverrideOp: tasmop;
Begin
PrefixOp:=A_None;
OverrideOp:=A_None;
{ prefix seg opcode / prefix opcode }
repeat
if is_prefix(actopcode) then
begin
PrefixOp:=ActOpcode;
opcode:=ActOpcode;
condition:=ActCondition;
opsize:=ActOpsize;
ConcatInstruction(curlist);
Consume(AS_OPCODE);
end
else
if is_override(actopcode) then
begin
OverrideOp:=ActOpcode;
opcode:=ActOpcode;
condition:=ActCondition;
opsize:=ActOpsize;
ConcatInstruction(curlist);
Consume(AS_OPCODE);
end
else
break;
{ allow for newline as in gas styled syntax }
while actasmtoken=AS_SEPARATOR do
Consume(AS_SEPARATOR);
until (actasmtoken<>AS_OPCODE);
{ 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 }
Opcode:=ActOpcode;
condition:=ActCondition;
opsize:=ActOpsize;
{ Valid combination of prefix/override and instruction ? }
if (prefixop<>A_NONE) and (NOT CheckPrefix(PrefixOp,actopcode)) then
Message1(asmr_e_invalid_prefix_and_opcode,actasmpattern);
if (overrideop<>A_NONE) and (NOT CheckOverride(OverrideOp,ActOpcode)) then
Message1(asmr_e_invalid_override_and_opcode,actasmpattern);
{ 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
Operands[operandnum].BuildOperand;
end; { end case }
until false;
Ops:=operandnum;
end;
Procedure BuildConstant(maxvalue: longint);
var
asmsym,
expr: string;
value : longint;
Begin
Repeat
Case actasmtoken of
AS_STRING:
Begin
expr:=actasmpattern;
if length(expr) > 1 then
Message(asmr_e_string_not_allowed_as_const);
Consume(AS_STRING);
Case actasmtoken of
AS_COMMA: Consume(AS_COMMA);
AS_END,
AS_SEPARATOR: ;
else
Message(asmr_e_invalid_string_expression);
end; { end case }
ConcatString(curlist,expr);
end;
AS_INTNUM,
AS_PLUS,
AS_MINUS,
AS_LPAREN,
AS_NOT,
AS_ID :
Begin
BuildConstSymbolExpression(false,false,false,value,asmsym);
if asmsym<>'' then
begin
if maxvalue<>longint($ffffffff) then
Message(asmr_w_32bit_const_for_address);
ConcatConstSymbol(curlist,asmsym,value)
end
else
ConcatConstant(curlist,value,maxvalue);
end;
AS_COMMA:
Consume(AS_COMMA);
AS_END,
AS_SEPARATOR:
break;
else
begin
Message(asmr_e_syn_constant);
RecoverConsume(false);
end
end; { end case }
Until false;
end;
Procedure BuildRealConstant(typ : tfloattype);
var
expr : string;
r : bestreal;
code : integer;
negativ : boolean;
errorflag: boolean;
Begin
errorflag:=FALSE;
Repeat
negativ:=false;
expr:='';
if actasmtoken=AS_PLUS then
Consume(AS_PLUS)
else
if actasmtoken=AS_MINUS then
begin
negativ:=true;
consume(AS_MINUS);
end;
Case actasmtoken of
AS_INTNUM:
Begin
expr:=actasmpattern;
Consume(AS_INTNUM);
if negativ then
expr:='-'+expr;
val(expr,r,code);
if code<>0 then
Begin
r:=0;
Message(asmr_e_invalid_float_expr);
End;
ConcatRealConstant(curlist,r,typ);
end;
AS_REALNUM:
Begin
expr:=actasmpattern;
Consume(AS_REALNUM);
{ in ATT syntax you have 0d in front of the real }
{ should this be forced ? yes i think so, as to }
{ conform to gas as much as possible. }
if (expr[1]='0') and (upper(expr[2])='D') then
Delete(expr,1,2);
if negativ then
expr:='-'+expr;
val(expr,r,code);
if code<>0 then
Begin
r:=0;
Message(asmr_e_invalid_float_expr);
End;
ConcatRealConstant(curlist,r,typ);
end;
AS_COMMA:
begin
Consume(AS_COMMA);
end;
AS_END,
AS_SEPARATOR:
begin
break;
end;
else
Begin
Consume(actasmtoken);
if not errorflag then
Message(asmr_e_invalid_float_expr);
errorflag:=TRUE;
end;
end;
Until false;
end;
Procedure BuildStringConstant(asciiz: boolean);
var
expr: string;
errorflag : boolean;
Begin
errorflag:=FALSE;
Repeat
Case actasmtoken of
AS_STRING:
Begin
expr:=actasmpattern;
if asciiz then
expr:=expr+#0;
ConcatPasString(curlist,expr);
Consume(AS_STRING);
end;
AS_COMMA:
begin
Consume(AS_COMMA);
end;
AS_END,
AS_SEPARATOR:
begin
break;
end;
else
Begin
Consume(actasmtoken);
if not errorflag then
Message(asmr_e_invalid_string_expression);
errorflag:=TRUE;
end;
end;
Until false;
end;
Function Assemble: tnode;
Var
hl : tasmlabel;
commname : string;
lasTSec : TSection;
l1,l2 : longint;
instr : T386ATTInstruction;
Begin
Message1(asmr_d_start_reading,'AT&T');
firsttoken:=TRUE;
{ sets up all opcode and register tables in uppercase }
if not _asmsorted then
Begin
SetupTables;
_asmsorted:=TRUE;
end;
curlist:=TAAsmoutput.Create;
lasTSec:=sec_code;
{ setup label linked list }
LocalLabelList:=TLocalLabelList.Create;
{ start tokenizer }
c:=current_scanner.asmgetchar;
gettoken;
{ main loop }
repeat
case actasmtoken of
AS_LLABEL:
Begin
if CreateLocalLabel(actasmpattern,hl,true) then
ConcatLabel(curlist,hl);
Consume(AS_LLABEL);
end;
AS_LABEL:
Begin
if SearchLabel(upper(actasmpattern),hl,true) then
ConcatLabel(curlist,hl)
else
Message1(asmr_e_unknown_label_identifier,actasmpattern);
Consume(AS_LABEL);
end;
AS_DW:
Begin
Consume(AS_DW);
BuildConstant($ffff);
end;
AS_DATA:
Begin
curList.Concat(Tai_section.Create(sec_data));
lasTSec:=sec_data;
Consume(AS_DATA);
end;
AS_TEXT:
Begin
curList.Concat(Tai_section.Create(sec_code));
lasTSec:=sec_code;
Consume(AS_TEXT);
end;
AS_DB:
Begin
Consume(AS_DB);
BuildConstant($ff);
end;
AS_DD:
Begin
Consume(AS_DD);
BuildConstant(longint($ffffffff));
end;
AS_DQ:
Begin
Consume(AS_DQ);
BuildRealConstant(s64comp);
end;
AS_SINGLE:
Begin
Consume(AS_SINGLE);
BuildRealConstant(s32real);
end;
AS_DOUBLE:
Begin
Consume(AS_DOUBLE);
BuildRealConstant(s64real);
end;
AS_EXTENDED:
Begin
Consume(AS_EXTENDED);
BuildRealConstant(s80real);
end;
AS_GLOBAL:
Begin
Consume(AS_GLOBAL);
if actasmtoken=AS_ID then
ConcatPublic(curlist,actasmpattern);
Consume(AS_ID);
if actasmtoken<>AS_SEPARATOR then
Consume(AS_SEPARATOR);
end;
AS_ALIGN:
Begin
Consume(AS_ALIGN);
l1:=BuildConstExpression(false,false);
if (target_info.system in [system_i386_GO32V2]) then
begin
l2:=1;
if (l1>=0) and (l1<=16) then
while (l1>0) do
begin
l2:=2*l2;
dec(l1);
end;
l1:=l2;
end;
ConcatAlign(curlist,l1);
Message(asmr_n_align_is_target_specific);
if actasmtoken<>AS_SEPARATOR then
Consume(AS_SEPARATOR);
end;
AS_BALIGN:
Begin
Consume(AS_BALIGN);
ConcatAlign(curlist,BuildConstExpression(false,false));
if actasmtoken<>AS_SEPARATOR then
Consume(AS_SEPARATOR);
end;
AS_P2ALIGN:
Begin
Consume(AS_P2ALIGN);
l1:=BuildConstExpression(false,false);
l2:=1;
if (l1>=0) and (l1<=16) then
while (l1>0) do
begin
l2:=2*l2;
dec(l1);
end;
l1:=l2;
ConcatAlign(curlist,l1);
if actasmtoken<>AS_SEPARATOR then
Consume(AS_SEPARATOR);
end;
AS_ASCIIZ:
Begin
Consume(AS_ASCIIZ);
BuildStringConstant(TRUE);
end;
AS_ASCII:
Begin
Consume(AS_ASCII);
BuildStringConstant(FALSE);
end;
AS_LCOMM:
Begin
Consume(AS_LCOMM);
commname:=actasmpattern;
Consume(AS_ID);
Consume(AS_COMMA);
ConcatLocalBss(commname,BuildConstExpression(false,false));
if actasmtoken<>AS_SEPARATOR then
Consume(AS_SEPARATOR);
end;
AS_COMM:
Begin
Consume(AS_COMM);
commname:=actasmpattern;
Consume(AS_ID);
Consume(AS_COMMA);
ConcatGlobalBss(commname,BuildConstExpression(false,false));
if actasmtoken<>AS_SEPARATOR then
Consume(AS_SEPARATOR);
end;
AS_OPCODE:
Begin
instr:=T386ATTInstruction.Create;
instr.BuildOpcode;
instr.AddReferenceSizes;
instr.SetInstructionOpsize;
instr.CheckOperandSizes;
instr.ConcatInstruction(curlist);
instr.Free;
end;
AS_SEPARATOR:
Begin
Consume(AS_SEPARATOR);
end;
AS_END:
begin
break; { end assembly block }
end;
else
Begin
Message(asmr_e_syntax_error);
RecoverConsume(false);
end;
end;
until false;
{ Check LocalLabelList }
LocalLabelList.CheckEmitted;
LocalLabelList.Free;
{ are we back in the code section? }
if lasTSec<>sec_code then
begin
Message(asmr_w_assembler_code_not_returned_to_text);
curList.Concat(Tai_section.Create(sec_code));
end;
{ Return the list in an asmnode }
assemble:=casmnode.create(curlist);
Message1(asmr_d_finish_reading,'AT&T');
end;
{*****************************************************************************
Initialize
*****************************************************************************}
const
asmmode_i386_att_info : tasmmodeinfo =
(
id : asmmode_i386_att;
idtxt : 'ATT'
);
initialization
RegisterAsmMode(asmmode_i386_att_info);
finalization
if assigned(iasmops) then
iasmops.Free;
end.
{
$Log$
Revision 1.49 2003-10-01 20:34:49 peter
* procinfo unit contains tprocinfo
* cginfo renamed to cgbase
* moved cgmessage to verbose
* fixed ppc and sparc compiles
Revision 1.48 2003/09/23 20:37:53 peter
* fix global var+offset
Revision 1.47 2003/09/23 17:56:06 peter
* locals and paras are allocated in the code generation
* tvarsym.localloc contains the location of para/local when
generating code for the current procedure
Revision 1.46 2003/09/03 15:55:01 peter
* NEWRA branch merged
Revision 1.45.2.2 2003/08/31 15:46:26 peter
* more updates for tregister
Revision 1.45.2.1 2003/08/28 18:35:08 peter
* tregister changed to cardinal
Revision 1.45 2003/05/30 23:57:08 peter
* more sparc cleanup
* accumulator removed, splitted in function_return_reg (called) and
function_result_reg (caller)
Revision 1.44 2003/05/22 21:32:29 peter
* removed some unit dependencies
Revision 1.43 2003/04/30 15:45:35 florian
* merged more x86-64/i386 code
Revision 1.42 2003/04/25 12:04:31 florian
* merged agx64att and ag386att to x86/agx86att
Revision 1.41 2003/04/21 20:05:10 peter
* removed some ie checks
Revision 1.40 2003/03/18 18:15:53 peter
* changed reg2opsize to function
Revision 1.39 2003/02/20 15:52:58 pierre
* fix a range check error
Revision 1.38 2003/02/19 22:00:16 daniel
* Code generator converted to new register notation
- Horribily outdated todo.txt removed
Revision 1.37 2003/02/03 22:47:14 daniel
- Removed reg_2_opsize array
Revision 1.36 2003/01/08 18:43:57 daniel
* Tregister changed into a record
Revision 1.35 2002/12/14 15:02:03 carl
* maxoperands -> max_operands (for portability in rautils.pas)
* fix some range-check errors with loadconst
+ add ncgadd unit to m68k
* some bugfix of a_param_reg with LOC_CREFERENCE
Revision 1.34 2002/12/01 22:08:34 carl
* some small cleanup (remove some specific operators which are not supported)
Revision 1.33 2002/11/30 23:16:39 carl
- removed unused message
Revision 1.32 2002/11/15 01:58:58 peter
* merged changes from 1.0.7 up to 04-11
- -V option for generating bug report tracing
- more tracing for option parsing
- errors for cdecl and high()
- win32 import stabs
- win32 records<=8 are returned in eax:edx (turned off by default)
- heaptrc update
- more info for temp management in .s file with EXTDEBUG
Revision 1.31 2002/09/03 16:26:28 daniel
* Make Tprocdef.defs protected
Revision 1.30 2002/08/13 18:01:52 carl
* rename swatoperands to swapoperands
+ m68k first compilable version (still needs a lot of testing):
assembler generator, system information , inline
assembler reader.
Revision 1.29 2002/08/12 15:08:42 carl
+ stab register indexes for powerpc (moved from gdb to cpubase)
+ tprocessor enumeration moved to cpuinfo
+ linker in target_info is now a class
* many many updates for m68k (will soon start to compile)
- removed some ifdef or correct them for correct cpu
Revision 1.28 2002/08/11 14:32:31 peter
* renamed current_library to objectlibrary
Revision 1.27 2002/08/11 13:24:17 peter
* saving of asmsymbols in ppu supported
* asmsymbollist global is removed and moved into a new class
tasmlibrarydata that will hold the info of a .a file which
corresponds with a single module. Added librarydata to tmodule
to keep the library info stored for the module. In the future the
objectfiles will also be stored to the tasmlibrarydata class
* all getlabel/newasmsymbol and friends are moved to the new class
Revision 1.26 2002/07/26 21:15:44 florian
* rewrote the system handling
Revision 1.25 2002/07/01 18:46:34 peter
* internal linker
* reorganized aasm layer
Revision 1.24 2002/05/18 13:34:25 peter
* readded missing revisions
Revision 1.23 2002/05/16 19:46:52 carl
+ defines.inc -> fpcdefs.inc to avoid conflicts if compiling by hand
+ try to fix temp allocation (still in ifdef)
+ generic constructor calls
+ start of tassembler / tmodulebase class cleanup
Revision 1.21 2002/04/15 19:12:09 carl
+ target_info.size_of_pointer -> pointer_size
+ some cleanup of unused types/variables
* move several constants from cpubase to their specific units
(where they are used)
+ att_Reg2str -> gas_reg2str
+ int_reg2str -> std_reg2str
Revision 1.20 2002/04/14 17:01:52 carl
+ att_reg2str -> gas_reg2str
Revision 1.19 2002/04/04 19:06:13 peter
* removed unused units
* use tlocation.size in cg.a_*loc*() routines
Revision 1.18 2002/04/02 17:11:39 peter
* tlocation,treference update
* LOC_CONSTANT added for better constant handling
* secondadd splitted in multiple routines
* location_force_reg added for loading a location to a register
of a specified size
* secondassignment parses now first the right and then the left node
(this is compatible with Kylix). This saves a lot of push/pop especially
with string operations
* adapted some routines to use the new cg methods
Revision 1.17 2002/03/28 20:48:25 carl
- remove go32v1 support
Revision 1.16 2002/01/24 18:25:53 peter
* implicit result variable generation for assembler routines
* removed m_tp modeswitch, use m_tp7 or not(m_fpc) instead
}
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