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* fixed evaluating constant expressions consisting of more than one term and

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that start with a minus in the intel assembler reader (mantis #15843)

git-svn-id: trunk@15041 -
This commit is contained in:
Jonas Maebe 2010-03-24 20:52:31 +00:00
parent 57b67087a8
commit 8542632ebe
3 changed files with 37 additions and 19 deletions
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1
.gitattributes vendored
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@ -10315,6 +10315,7 @@ tests/webtbs/tw15777d.pp svneol=native#text/plain
tests/webtbs/tw15777e.pp svneol=native#text/plain
tests/webtbs/tw15777f.pp svneol=native#text/plain
tests/webtbs/tw15812.pp svneol=native#text/plain
tests/webtbs/tw15843.pp svneol=native#text/plain
tests/webtbs/tw15909.pp svneol=native#text/plain
tests/webtbs/tw1592.pp svneol=native#text/plain
tests/webtbs/tw15930.pp svneol=native#text/plain

34
compiler/x86/rax86int.pas
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@ -62,7 +62,7 @@ Unit Rax86int;
function consume(t : tasmtoken):boolean;
procedure RecoverConsume(allowcomma:boolean);
procedure BuildRecordOffsetSize(const expr: string;var offset:aint;var size:aint; var mangledname: string; needvmtofs: boolean);
procedure BuildConstSymbolExpression(needofs,isref:boolean;var value:aint;var asmsym:string;var asmsymtyp:TAsmsymtype);
procedure BuildConstSymbolExpression(needofs,isref,startingminus:boolean;var value:aint;var asmsym:string;var asmsymtyp:TAsmsymtype);
function BuildConstExpression:aint;
function BuildRefConstExpression:aint;
procedure BuildReference(oper : tx86operand);
@ -746,7 +746,7 @@ Unit Rax86int;
end;
Procedure tx86intreader.BuildConstSymbolExpression(needofs,isref:boolean;var value:aint;var asmsym:string;var asmsymtyp:TAsmsymtype);
Procedure tx86intreader.BuildConstSymbolExpression(needofs,isref,startingminus:boolean;var value:aint;var asmsym:string;var asmsymtyp:TAsmsymtype);
var
tempstr,expr,hs,mangledname : string;
parenlevel : longint;
@ -768,6 +768,8 @@ Unit Rax86int;
errorflag:=FALSE;
tempstr:='';
expr:='';
if startingminus then
expr:='-';
inexpression:=TRUE;
parenlevel:=0;
sym:=nil;
@ -1116,7 +1118,7 @@ Unit Rax86int;
hs : string;
hssymtyp : TAsmsymtype;
begin
BuildConstSymbolExpression(false,false,l,hs,hssymtyp);
BuildConstSymbolExpression(false,false,false,l,hs,hssymtyp);
if hs<>'' then
Message(asmr_e_relocatable_symbol_not_allowed);
BuildConstExpression:=l;
@ -1129,7 +1131,7 @@ Unit Rax86int;
hs : string;
hssymtyp : TAsmsymtype;
begin
BuildConstSymbolExpression(false,true,l,hs,hssymtyp);
BuildConstSymbolExpression(false,true,false,l,hs,hssymtyp);
if hs<>'' then
Message(asmr_e_relocatable_symbol_not_allowed);
BuildRefConstExpression:=l;
@ -1429,7 +1431,11 @@ Unit Rax86int;
begin
if not GotPlus and not GotStar then
Message(asmr_e_invalid_reference_syntax);
BuildConstSymbolExpression(true,true,l,tempstr,tempsymtyp);
BuildConstSymbolExpression(true,true,GotPlus and negative,l,tempstr,tempsymtyp);
{ already handled by BuildConstSymbolExpression(); must be
handled there to avoid [reg-1+1] being interpreted as
[reg-(1+1)] }
negative:=false;
if tempstr<>'' then
begin
@ -1453,12 +1459,7 @@ Unit Rax86int;
scale:=l;
end
else
begin
if negative then
Dec(oper.opr.ref.offset,l)
else
Inc(oper.opr.ref.offset,l);
end;
Inc(oper.opr.ref.offset,l);
end;
OPR_LOCAL :
begin
@ -1472,12 +1473,7 @@ Unit Rax86int;
scale:=l;
end
else
begin
if negative then
Dec(oper.opr.localsymofs,l)
else
Inc(oper.opr.localsymofs,l);
end;
Inc(oper.opr.localsymofs,l);
end;
end;
GotPlus:=(prevasmtoken=AS_PLUS) or
@ -1514,7 +1510,7 @@ Unit Rax86int;
begin
if not (oper.opr.typ in [OPR_NONE,OPR_CONSTANT]) then
Message(asmr_e_invalid_operand_type);
BuildConstSymbolExpression(true,false,l,tempstr,tempsymtyp);
BuildConstSymbolExpression(true,false,false,l,tempstr,tempsymtyp);
if tempstr<>'' then
begin
oper.opr.typ:=OPR_SYMBOL;
@ -2042,7 +2038,7 @@ Unit Rax86int;
AS_INTNUM,
AS_ID :
Begin
BuildConstSymbolExpression(false,false,value,asmsym,asmsymtyp);
BuildConstSymbolExpression(false,false,false,value,asmsym,asmsymtyp);
if asmsym<>'' then
begin
if constsize<>sizeof(pint) then

21
tests/webtbs/tw15843.pp Normal file
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@ -0,0 +1,21 @@
{ %opt=-Cg- }
{ %cpu=i386 }
{$asmmode intel}
var
a: array[0..3] of byte;
l: longint;
begin
a[0]:=1;
a[1]:=2;
a[2]:=3;
a[2]:=4;
asm
lea ecx,[a]
inc ecx
movzx eax, byte ptr[ecx-1+1] // bug in this line (-2)
mov [l],eax
end;
if l<>2 then
halt(1);
end.