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ed8eb13d59
fpc/compiler/cg386mat.pas
peter ed8eb13d59 * moved bitmask constants to sets 
* some other type/const renamings
1999-08-03 22:02:29 +00:00

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{
$Id$
Copyright (c) 1993-98 by Florian Klaempfl
Generate i386 assembler for math nodes
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 cg386mat;
interface
uses
tree;
procedure secondmoddiv(var p : ptree);
procedure secondshlshr(var p : ptree);
procedure secondumminus(var p : ptree);
procedure secondnot(var p : ptree);
implementation
uses
globtype,systems,
cobjects,verbose,globals,
symconst,symtable,aasm,types,
hcodegen,temp_gen,pass_2,
i386base,i386asm,
{$ifdef dummy}
end { this overcomes the annoying highlighting problem in my TP IDE,
the IDE assumes i386asm start a asm block (FK) }
{$endif}
cgai386,tgeni386;
{*****************************************************************************
SecondModDiv
*****************************************************************************}
procedure secondmoddiv(var p : ptree);
var
hreg1 : tregister;
shrdiv, andmod, pushed,popeax,popedx : boolean;
power : longint;
hl : pasmlabel;
hloc : tlocation;
pushedreg : tpushed;
typename,opname : string[6];
begin
shrdiv := false;
andmod := false;
secondpass(p^.left);
set_location(p^.location,p^.left^.location);
pushed:=maybe_push(p^.right^.registers32,p,is_64bitint(p^.left^.resulttype));
secondpass(p^.right);
if pushed then restore(p,is_64bitint(p^.left^.resulttype));
if is_64bitint(p^.resulttype) then
begin
{ save p^.lcoation, because we change it now }
set_location(hloc,p^.location);
release_qword_loc(p^.location);
release_qword_loc(p^.right^.location);
p^.location.registerlow:=getexplicitregister32(R_EAX);
p^.location.registerhigh:=getexplicitregister32(R_EDX);
pushusedregisters(pushedreg,$ff
and not($80 shr byte(p^.location.registerlow))
and not($80 shr byte(p^.location.registerhigh)));
{ the left operand is in hloc, because the
location of left is p^.location but p^.location
is already destroyed
}
emit_pushq_loc(hloc);
clear_location(hloc);
emit_pushq_loc(p^.right^.location);
if porddef(p^.resulttype)^.typ=u64bit then
typename:='QWORD'
else
typename:='INT64';
if p^.treetype=divn then
opname:='DIV_'
else
opname:='MOD_';
emitcall('FPC_'+opname+typename);
emit_reg_reg(A_MOV,S_L,R_EAX,p^.location.registerlow);
emit_reg_reg(A_MOV,S_L,R_EDX,p^.location.registerhigh);
popusedregisters(pushedreg);
p^.location.loc:=LOC_REGISTER;
end
else
begin
{ put numerator in register }
if p^.left^.location.loc<>LOC_REGISTER then
begin
if p^.left^.location.loc=LOC_CREGISTER then
begin
hreg1:=getregister32;
emit_reg_reg(A_MOV,S_L,p^.left^.location.register,hreg1);
end
else
begin
del_reference(p^.left^.location.reference);
hreg1:=getregister32;
exprasmlist^.concat(new(pai386,op_ref_reg(A_MOV,S_L,newreference(p^.left^.location.reference),
hreg1)));
end;
clear_location(p^.left^.location);
p^.left^.location.loc:=LOC_REGISTER;
p^.left^.location.register:=hreg1;
end
else hreg1:=p^.left^.location.register;
if (p^.treetype=divn) and (p^.right^.treetype=ordconstn) and
ispowerof2(p^.right^.value,power) then
Begin
shrdiv := true;
{for signed numbers, the numerator must be adjusted before the
shift instruction, but not wih unsigned numbers! Otherwise,
"Cardinal($ffffffff) div 16" overflows! (JM)}
If is_signed(p^.left^.resulttype) Then
Begin
exprasmlist^.concat(new(pai386,op_reg_reg(A_OR,S_L,hreg1,hreg1)));
getlabel(hl);
emitjmp(C_NS,hl);
if power=1 then
exprasmlist^.concat(new(pai386,op_reg(A_INC,S_L,hreg1)))
else
exprasmlist^.concat(new(pai386,op_const_reg(A_ADD,S_L,p^.right^.value-1,hreg1)));
emitlab(hl);
exprasmlist^.concat(new(pai386,op_const_reg(A_SAR,S_L,power,hreg1)));
End
Else
exprasmlist^.concat(new(pai386,op_const_reg(A_SHR,S_L,power,hreg1)));
End
else
if (p^.treetype=modn) and (p^.right^.treetype=ordconstn) and
ispowerof2(p^.right^.value,power) and Not(is_signed(p^.left^.resulttype)) Then
{is there a similar trick for MOD'ing signed numbers? (JM)}
Begin
exprasmlist^.concat(new(pai386,op_const_reg(A_AND,S_L,p^.right^.value-1,hreg1)));
andmod := true;
End
else
begin
{ bring denominator to EDI }
{ EDI is always free, it's }
{ only used for temporary }
{ purposes }
if (p^.right^.location.loc<>LOC_REGISTER) and
(p^.right^.location.loc<>LOC_CREGISTER) then
begin
del_reference(p^.right^.location.reference);
p^.left^.location.loc:=LOC_REGISTER;
exprasmlist^.concat(new(pai386,op_ref_reg(A_MOV,S_L,newreference(p^.right^.location.reference),R_EDI)));
end
else
begin
emit_reg_reg(A_MOV,S_L,p^.right^.location.register,R_EDI);
ungetregister32(p^.right^.location.register);
end;
popedx:=false;
popeax:=false;
if hreg1=R_EDX then
begin
if not(R_EAX in unused) then
begin
exprasmlist^.concat(new(pai386,op_reg(A_PUSH,S_L,R_EAX)));
popeax:=true;
end;
emit_reg_reg(A_MOV,S_L,R_EDX,R_EAX);
end
else
begin
if not(R_EDX in unused) then
begin
exprasmlist^.concat(new(pai386,op_reg(A_PUSH,S_L,R_EDX)));
popedx:=true;
end;
if hreg1<>R_EAX then
begin
if not(R_EAX in unused) then
begin
exprasmlist^.concat(new(pai386,op_reg(A_PUSH,S_L,R_EAX)));
popeax:=true;
end;
emit_reg_reg(A_MOV,S_L,hreg1,R_EAX);
end;
end;
{ sign extension depends on the left type }
if porddef(p^.left^.resulttype)^.typ=u32bit then
exprasmlist^.concat(new(pai386,op_reg_reg(A_XOR,S_L,R_EDX,R_EDX)))
else
exprasmlist^.concat(new(pai386,op_none(A_CDQ,S_NO)));
{ division depends on the right type }
if porddef(p^.right^.resulttype)^.typ=u32bit then
exprasmlist^.concat(new(pai386,op_reg(A_DIV,S_L,R_EDI)))
else
exprasmlist^.concat(new(pai386,op_reg(A_IDIV,S_L,R_EDI)));
if p^.treetype=divn then
begin
{ if result register is busy then copy }
if popeax then
begin
if hreg1=R_EAX then
internalerror(112);
emit_reg_reg(A_MOV,S_L,R_EAX,hreg1)
end
else
if hreg1<>R_EAX then
Begin
ungetregister32(hreg1);
hreg1 := getexplicitregister32(R_EAX);
{ I don't think it's possible that now hreg1 <> R_EAX
since popeax is false, but for all certainty I do
support that situation (JM)}
if hreg1 <> R_EAX then
emit_reg_reg(A_MOV,S_L,R_EAX,hreg1);
end;
end
else
{if we did the mod by an "and", the result is in hreg1 and
EDX certainly hasn't been pushed (JM)}
if not(andmod) Then
if popedx then
{the mod was done by an (i)div (so the result is now in
edx), but edx was occupied prior to the division, so
move the result into a safe place (JM)}
emit_reg_reg(A_MOV,S_L,R_EDX,hreg1)
else
Begin
{Get rid of the unnecessary hreg1 if possible (same as with
EAX in divn) (JM)}
ungetregister32(hreg1);
hreg1 := getexplicitregister32(R_EDX);
if hreg1 <> R_EDX then
emit_reg_reg(A_MOV,S_L,R_EDX,hreg1);;
End;
if popeax then
exprasmlist^.concat(new(pai386,op_reg(A_POP,S_L,R_EAX)));
if popedx then
exprasmlist^.concat(new(pai386,op_reg(A_POP,S_L,R_EDX)));
end;
If not(andmod or shrdiv) then
{andmod and shrdiv only use hreg1 (which is already in usedinproc,
since it was acquired with getregister), the others also use both
EAX and EDX (JM)}
Begin
usedinproc:=usedinproc or ($80 shr byte(R_EAX));
usedinproc:=usedinproc or ($80 shr byte(R_EDX));
End;
clear_location(p^.location);
p^.location.loc:=LOC_REGISTER;
p^.location.register:=hreg1;
end;
end;
{*****************************************************************************
SecondShlShr
*****************************************************************************}
procedure secondshlshr(var p : ptree);
var
hregister1,hregister2,hregister3,
hregisterhigh,hregisterlow : tregister;
pushed,popecx : boolean;
op : tasmop;
hr : preference;
l1,l2,l3 : pasmlabel;
begin
popecx:=false;
secondpass(p^.left);
pushed:=maybe_push(p^.right^.registers32,p,is_64bitint(p^.left^.resulttype));
secondpass(p^.right);
if pushed then
restore(p,is_64bitint(p^.left^.resulttype));
if is_64bitint(p^.left^.resulttype) then
begin
{ load left operator in a register }
if p^.left^.location.loc<>LOC_REGISTER then
begin
if p^.left^.location.loc=LOC_CREGISTER then
begin
hregisterlow:=getregister32;
hregisterhigh:=getregister32;
emit_reg_reg(A_MOV,S_L,p^.left^.location.registerlow,
hregisterlow);
emit_reg_reg(A_MOV,S_L,p^.left^.location.registerhigh,
hregisterlow);
end
else
begin
del_reference(p^.left^.location.reference);
hregisterlow:=getregister32;
hregisterhigh:=getregister32;
exprasmlist^.concat(new(pai386,op_ref_reg(A_MOV,S_L,newreference(p^.left^.location.reference),
hregisterlow)));
hr:=newreference(p^.left^.location.reference);
inc(hr^.offset,4);
exprasmlist^.concat(new(pai386,op_ref_reg(A_MOV,S_L,hr,
hregisterhigh)));
end;
end
else
begin
hregisterlow:=p^.left^.location.registerlow;
hregisterhigh:=p^.left^.location.registerhigh;
end;
{ shifting by a constant directly coded: }
if (p^.right^.treetype=ordconstn) then
begin
{ shrd/shl works only for values <=31 !! }
if p^.right^.value>31 then
begin
if p^.treetype=shln then
begin
exprasmlist^.concat(new(pai386,op_reg_reg(A_XOR,S_L,hregisterhigh,
hregisterhigh)));
exprasmlist^.concat(new(pai386,op_const_reg(A_SHL,S_L,p^.right^.value and 31,
hregisterlow)));
end
else
begin
exprasmlist^.concat(new(pai386,op_reg_reg(A_XOR,S_L,hregisterlow,
hregisterlow)));
exprasmlist^.concat(new(pai386,op_const_reg(A_SHR,S_L,p^.right^.value and 31,
hregisterhigh)));
end;
p^.location.registerhigh:=hregisterlow;
p^.location.registerlow:=hregisterhigh;
end
else
begin
if p^.treetype=shln then
begin
exprasmlist^.concat(new(pai386,op_const_reg_reg(A_SHLD,S_L,p^.right^.value and 31,
hregisterlow,hregisterhigh)));
exprasmlist^.concat(new(pai386,op_const_reg(A_SHL,S_L,p^.right^.value and 31,
hregisterlow)));
end
else
begin
exprasmlist^.concat(new(pai386,op_const_reg_reg(A_SHRD,S_L,p^.right^.value and 31,
hregisterhigh,hregisterlow)));
exprasmlist^.concat(new(pai386,op_const_reg(A_SHR,S_L,p^.right^.value and 31,
hregisterhigh)));
end;
p^.location.registerlow:=hregisterlow;
p^.location.registerhigh:=hregisterhigh;
end;
p^.location.loc:=LOC_REGISTER;
end
else
begin
{ load right operators in a register }
if p^.right^.location.loc<>LOC_REGISTER then
begin
if p^.right^.location.loc=LOC_CREGISTER then
begin
hregister2:=getexplicitregister32(R_ECX);
emit_reg_reg(A_MOV,S_L,p^.right^.location.register,
hregister2);
end
else
begin
del_reference(p^.right^.location.reference);
hregister2:=getexplicitregister32(R_ECX);
exprasmlist^.concat(new(pai386,op_ref_reg(A_MOV,S_L,newreference(p^.right^.location.reference),
hregister2)));
end;
end
else
hregister2:=p^.right^.location.register;
{ left operator is already in a register }
{ hence are both in a register }
{ is it in the case ECX ? }
if (hregisterlow=R_ECX) then
begin
{ then only swap }
emit_reg_reg(A_XCHG,S_L,hregisterlow,hregister2);
hregister3:=hregisterlow;
hregisterlow:=hregister2;
hregister2:=hregister3;
end
else if (hregisterhigh=R_ECX) then
begin
{ then only swap }
emit_reg_reg(A_XCHG,S_L,hregisterhigh,hregister2);
hregister3:=hregisterhigh;
hregisterhigh:=hregister2;
hregister2:=hregister3;
end
{ if second operator not in ECX ? }
else if (hregister2<>R_ECX) then
begin
{ ECX occupied then push it }
if not (R_ECX in unused) then
begin
popecx:=true;
exprasmlist^.concat(new(pai386,op_reg(A_PUSH,S_L,R_ECX)));
end;
emit_reg_reg(A_MOV,S_L,hregister2,R_ECX);
end;
ungetregister32(hregister2);
{ the damned shift instructions work only til a count of 32 }
{ so we've to do some tricks here }
if p^.treetype=shln then
begin
getlabel(l1);
getlabel(l2);
getlabel(l3);
exprasmlist^.concat(new(pai386,op_const_reg(A_CMP,S_L,64,R_ECX)));
emitjmp(C_L,l1);
exprasmlist^.concat(new(pai386,op_reg_reg(A_XOR,S_L,hregisterlow,hregisterlow)));
exprasmlist^.concat(new(pai386,op_reg_reg(A_XOR,S_L,hregisterhigh,hregisterhigh)));
emitjmp(C_None,l3);
emitlab(l1);
exprasmlist^.concat(new(pai386,op_const_reg(A_CMP,S_L,32,R_ECX)));
emitjmp(C_L,l2);
exprasmlist^.concat(new(pai386,op_const_reg(A_SUB,S_L,32,R_ECX)));
exprasmlist^.concat(new(pai386,op_reg_reg(A_SHL,S_L,R_CL,
hregisterlow)));
exprasmlist^.concat(new(pai386,op_reg_reg(A_MOV,S_L,hregisterlow,hregisterhigh)));
exprasmlist^.concat(new(pai386,op_reg_reg(A_XOR,S_L,hregisterlow,hregisterlow)));
emitjmp(C_None,l3);
emitlab(l2);
exprasmlist^.concat(new(pai386,op_reg_reg_reg(A_SHLD,S_L,R_CL,
hregisterlow,hregisterhigh)));
exprasmlist^.concat(new(pai386,op_reg_reg(A_SHL,S_L,R_CL,
hregisterlow)));
emitlab(l3);
end
else
begin
getlabel(l1);
getlabel(l2);
getlabel(l3);
exprasmlist^.concat(new(pai386,op_const_reg(A_CMP,S_L,64,R_ECX)));
emitjmp(C_L,l1);
exprasmlist^.concat(new(pai386,op_reg_reg(A_XOR,S_L,hregisterlow,hregisterlow)));
exprasmlist^.concat(new(pai386,op_reg_reg(A_XOR,S_L,hregisterhigh,hregisterhigh)));
emitjmp(C_None,l3);
emitlab(l1);
exprasmlist^.concat(new(pai386,op_const_reg(A_CMP,S_L,32,R_ECX)));
emitjmp(C_L,l2);
exprasmlist^.concat(new(pai386,op_const_reg(A_SUB,S_L,32,R_ECX)));
exprasmlist^.concat(new(pai386,op_reg_reg(A_SHR,S_L,R_CL,
hregisterhigh)));
exprasmlist^.concat(new(pai386,op_reg_reg(A_MOV,S_L,hregisterhigh,hregisterlow)));
exprasmlist^.concat(new(pai386,op_reg_reg(A_XOR,S_L,hregisterhigh,hregisterhigh)));
emitjmp(C_None,l3);
emitlab(l2);
exprasmlist^.concat(new(pai386,op_reg_reg_reg(A_SHRD,S_L,R_CL,
hregisterhigh,hregisterlow)));
exprasmlist^.concat(new(pai386,op_reg_reg(A_SHR,S_L,R_CL,
hregisterhigh)));
emitlab(l3);
end;
{ maybe put ECX back }
if popecx then
exprasmlist^.concat(new(pai386,op_reg(A_POP,S_L,R_ECX)));
p^.location.registerlow:=hregisterlow;
p^.location.registerhigh:=hregisterhigh;
end;
end
else
begin
{ load left operators in a register }
if p^.left^.location.loc<>LOC_REGISTER then
begin
if p^.left^.location.loc=LOC_CREGISTER then
begin
hregister1:=getregister32;
emit_reg_reg(A_MOV,S_L,p^.left^.location.register,
hregister1);
end
else
begin
del_reference(p^.left^.location.reference);
hregister1:=getregister32;
exprasmlist^.concat(new(pai386,op_ref_reg(A_MOV,S_L,newreference(p^.left^.location.reference),
hregister1)));
end;
end
else
hregister1:=p^.left^.location.register;
{ determine operator }
if p^.treetype=shln then
op:=A_SHL
else
op:=A_SHR;
{ shifting by a constant directly coded: }
if (p^.right^.treetype=ordconstn) then
begin
{ l shl 32 should 0 imho, but neither TP nor Delphi do it in this way (FK)
if p^.right^.value<=31 then
}
exprasmlist^.concat(new(pai386,op_const_reg(op,S_L,p^.right^.value and 31,
hregister1)));
{
else
exprasmlist^.concat(new(pai386,op_reg_reg(A_XOR,S_L,hregister1,
hregister1)));
}
p^.location.loc:=LOC_REGISTER;
p^.location.register:=hregister1;
end
else
begin
{ load right operators in a register }
if p^.right^.location.loc<>LOC_REGISTER then
begin
if p^.right^.location.loc=LOC_CREGISTER then
begin
hregister2:=getexplicitregister32(R_ECX);
emit_reg_reg(A_MOV,S_L,p^.right^.location.register,
hregister2);
end
else
begin
del_reference(p^.right^.location.reference);
hregister2:=getexplicitregister32(R_ECX);
exprasmlist^.concat(new(pai386,op_ref_reg(A_MOV,S_L,newreference(p^.right^.location.reference),
hregister2)));
end;
end
else
hregister2:=p^.right^.location.register;
{ left operator is already in a register }
{ hence are both in a register }
{ is it in the case ECX ? }
if (hregister1=R_ECX) then
begin
{ then only swap }
emit_reg_reg(A_XCHG,S_L,hregister1,hregister2);
hregister3:=hregister1;
hregister1:=hregister2;
hregister2:=hregister3;
end
{ if second operator not in ECX ? }
else if (hregister2<>R_ECX) then
begin
{ ECX occupied then push it }
if not (R_ECX in unused) then
begin
popecx:=true;
exprasmlist^.concat(new(pai386,op_reg(A_PUSH,S_L,R_ECX)));
end;
emit_reg_reg(A_MOV,S_L,hregister2,R_ECX);
end;
ungetregister32(hregister2);
{ right operand is in ECX }
emit_reg_reg(op,S_L,R_CL,hregister1);
{ maybe ECX back }
if popecx then
exprasmlist^.concat(new(pai386,op_reg(A_POP,S_L,R_ECX)));
p^.location.register:=hregister1;
end;
end;
end;
{*****************************************************************************
SecondUmMinus
*****************************************************************************}
procedure secondumminus(var p : ptree);
{$ifdef SUPPORT_MMX}
procedure do_mmx_neg;
var
op : tasmop;
begin
p^.location.loc:=LOC_MMXREGISTER;
if cs_mmx_saturation in aktlocalswitches then
case mmx_type(p^.resulttype) of
mmxs8bit:
op:=A_PSUBSB;
mmxu8bit:
op:=A_PSUBUSB;
mmxs16bit,mmxfixed16:
op:=A_PSUBSW;
mmxu16bit:
op:=A_PSUBUSW;
end
else
case mmx_type(p^.resulttype) of
mmxs8bit,mmxu8bit:
op:=A_PSUBB;
mmxs16bit,mmxu16bit,mmxfixed16:
op:=A_PSUBW;
mmxs32bit,mmxu32bit:
op:=A_PSUBD;
end;
emit_reg_reg(op,S_NO,p^.location.register,R_MM7);
emit_reg_reg(A_MOVQ,S_NO,R_MM7,p^.location.register);
end;
{$endif}
var
hr : preference;
begin
if is_64bitint(p^.left^.resulttype) then
begin
secondpass(p^.left);
clear_location(p^.location);
p^.location.loc:=LOC_REGISTER;
case p^.left^.location.loc of
LOC_REGISTER :
begin
p^.location.registerlow:=p^.left^.location.registerlow;
p^.location.registerhigh:=p^.left^.location.registerhigh;
end;
LOC_CREGISTER :
begin
p^.location.registerlow:=getregister32;
p^.location.registerhigh:=getregister32;
emit_reg_reg(A_MOV,S_L,p^.left^.location.registerlow,p^.location.registerlow);
emit_reg_reg(A_MOV,S_L,p^.left^.location.registerhigh,p^.location.registerhigh);
end;
LOC_REFERENCE,LOC_MEM :
begin
del_reference(p^.left^.location.reference);
p^.location.registerlow:=getregister32;
p^.location.registerhigh:=getregister32;
exprasmlist^.concat(new(pai386,op_ref_reg(A_MOV,S_L,
newreference(p^.left^.location.reference),p^.location.registerlow)));
hr:=newreference(p^.left^.location.reference);
inc(hr^.offset,4);
exprasmlist^.concat(new(pai386,op_ref_reg(A_MOV,S_L,
hr,p^.location.registerhigh)));
end;
end;
exprasmlist^.concat(new(pai386,op_reg(A_NEG,S_L,p^.location.registerlow)));
exprasmlist^.concat(new(pai386,op_const_reg(A_ADC,S_L,0,p^.location.registerhigh)));
exprasmlist^.concat(new(pai386,op_reg(A_NEG,S_L,p^.location.registerhigh)));
end
else
begin
secondpass(p^.left);
p^.location.loc:=LOC_REGISTER;
case p^.left^.location.loc of
LOC_REGISTER:
begin
p^.location.register:=p^.left^.location.register;
exprasmlist^.concat(new(pai386,op_reg(A_NEG,S_L,p^.location.register)));
end;
LOC_CREGISTER:
begin
p^.location.register:=getregister32;
emit_reg_reg(A_MOV,S_L,p^.location.register,
p^.location.register);
exprasmlist^.concat(new(pai386,op_reg(A_NEG,S_L,p^.location.register)));
end;
{$ifdef SUPPORT_MMX}
LOC_MMXREGISTER:
begin
set_location(p^.location,p^.left^.location);
emit_reg_reg(A_PXOR,S_NO,R_MM7,R_MM7);
do_mmx_neg;
end;
LOC_CMMXREGISTER:
begin
p^.location.register:=getregistermmx;
emit_reg_reg(A_PXOR,S_NO,R_MM7,R_MM7);
emit_reg_reg(A_MOVQ,S_NO,p^.left^.location.register,
p^.location.register);
do_mmx_neg;
end;
{$endif SUPPORT_MMX}
LOC_REFERENCE,LOC_MEM:
begin
del_reference(p^.left^.location.reference);
if (p^.left^.resulttype^.deftype=floatdef) and
(pfloatdef(p^.left^.resulttype)^.typ<>f32bit) then
begin
p^.location.loc:=LOC_FPU;
floatload(pfloatdef(p^.left^.resulttype)^.typ,
p^.left^.location.reference);
exprasmlist^.concat(new(pai386,op_none(A_FCHS,S_NO)));
end
{$ifdef SUPPORT_MMX}
else if (cs_mmx in aktlocalswitches) and is_mmx_able_array(p^.left^.resulttype) then
begin
p^.location.register:=getregistermmx;
emit_reg_reg(A_PXOR,S_NO,R_MM7,R_MM7);
exprasmlist^.concat(new(pai386,op_ref_reg(A_MOVQ,S_NO,
newreference(p^.left^.location.reference),
p^.location.register)));
do_mmx_neg;
end
{$endif SUPPORT_MMX}
else
begin
p^.location.register:=getregister32;
exprasmlist^.concat(new(pai386,op_ref_reg(A_MOV,S_L,
newreference(p^.left^.location.reference),
p^.location.register)));
exprasmlist^.concat(new(pai386,op_reg(A_NEG,S_L,p^.location.register)));
end;
end;
LOC_FPU:
begin
p^.location.loc:=LOC_FPU;
exprasmlist^.concat(new(pai386,op_none(A_FCHS,S_NO)));
end;
end;
end;
{ Here was a problem... }
{ Operand to be negated always }
{ seems to be converted to signed }
{ 32-bit before doing neg!! }
{ So this is useless... }
{ emitoverflowcheck(p);}
end;
{*****************************************************************************
SecondNot
*****************************************************************************}
procedure secondnot(var p : ptree);
const
flagsinvers : array[F_E..F_BE] of tresflags =
(F_NE,F_E,F_LE,F_GE,F_L,F_G,F_NC,F_C,
F_A,F_AE,F_B,F_BE);
var
hl : pasmlabel;
opsize : topsize;
hr : preference;
begin
if is_boolean(p^.resulttype) then
begin
opsize:=def_opsize(p^.resulttype);
case p^.left^.location.loc of
LOC_JUMP :
begin
hl:=truelabel;
truelabel:=falselabel;
falselabel:=hl;
secondpass(p^.left);
maketojumpbool(p^.left);
hl:=truelabel;
truelabel:=falselabel;
falselabel:=hl;
end;
LOC_FLAGS :
begin
secondpass(p^.left);
p^.location.resflags:=flagsinvers[p^.left^.location.resflags];
end;
LOC_REGISTER :
begin
secondpass(p^.left);
{p^.location.register:=p^.left^.location.register;
exprasmlist^.concat(new(pai386,op_const_reg(A_XOR,opsize,1,p^.location.register)));}
p^.location.loc:=LOC_FLAGS;
p^.location.resflags:=F_E;
exprasmlist^.concat(new(pai386,op_reg_reg(A_TEST,opsize,
p^.left^.location.register,p^.left^.location.register)));
ungetregister(p^.left^.location.register);
end;
LOC_CREGISTER :
begin
secondpass(p^.left);
clear_location(p^.location);
p^.location.loc:=LOC_REGISTER;
p^.location.register:=def_getreg(p^.resulttype);
emit_reg_reg(A_MOV,opsize,p^.left^.location.register,p^.location.register);
exprasmlist^.concat(new(pai386,op_reg_reg(A_TEST,opsize,p^.location.register,p^.location.register)));
ungetregister(p^.location.register);
p^.location.loc:=LOC_FLAGS;
p^.location.resflags:=F_E;
end;
LOC_REFERENCE,
LOC_MEM :
begin
secondpass(p^.left);
clear_location(p^.location);
p^.location.loc:=LOC_REGISTER;
del_reference(p^.left^.location.reference);
{ this was placed before del_ref => internaalerror(10) }
p^.location.register:=def_getreg(p^.resulttype);
exprasmlist^.concat(new(pai386,op_ref_reg(A_MOV,opsize,
newreference(p^.left^.location.reference),p^.location.register)));
exprasmlist^.concat(new(pai386,op_reg_reg(A_TEST,opsize,p^.location.register,p^.location.register)));
ungetregister(p^.location.register);
p^.location.loc:=LOC_FLAGS;
p^.location.resflags:=F_E;
end;
end;
end
{$ifdef SUPPORT_MMX}
else
if (cs_mmx in aktlocalswitches) and is_mmx_able_array(p^.left^.resulttype) then
begin
secondpass(p^.left);
p^.location.loc:=LOC_MMXREGISTER;
{ prepare EDI }
exprasmlist^.concat(new(pai386,op_const_reg(A_MOV,S_L,$ffffffff,R_EDI)));
{ load operand }
case p^.left^.location.loc of
LOC_MMXREGISTER:
set_location(p^.location,p^.left^.location);
LOC_CMMXREGISTER:
begin
p^.location.register:=getregistermmx;
emit_reg_reg(A_MOVQ,S_NO,p^.left^.location.register,p^.location.register);
end;
LOC_REFERENCE,LOC_MEM:
begin
del_reference(p^.left^.location.reference);
p^.location.register:=getregistermmx;
exprasmlist^.concat(new(pai386,op_ref_reg(A_MOVQ,S_NO,
newreference(p^.left^.location.reference),p^.location.register)));
end;
end;
{ load mask }
emit_reg_reg(A_MOV,S_D,R_EDI,R_MM7);
{ lower 32 bit }
emit_reg_reg(A_PXOR,S_D,R_MM7,p^.location.register);
{ shift mask }
exprasmlist^.concat(new(pai386,op_const_reg(A_PSLLQ,S_NO,32,R_MM7)));
{ higher 32 bit }
emit_reg_reg(A_PXOR,S_D,R_MM7,p^.location.register);
end
{$endif SUPPORT_MMX}
else if is_64bitint(p^.left^.resulttype) then
begin
secondpass(p^.left);
clear_location(p^.location);
p^.location.loc:=LOC_REGISTER;
case p^.left^.location.loc of
LOC_REGISTER :
begin
p^.location.registerlow:=p^.left^.location.registerlow;
p^.location.registerhigh:=p^.left^.location.registerhigh;
exprasmlist^.concat(new(pai386,op_reg(A_NOT,S_L,p^.location.registerlow)));
exprasmlist^.concat(new(pai386,op_reg(A_NOT,S_L,p^.location.registerhigh)));
end;
LOC_CREGISTER :
begin
p^.location.registerlow:=getregister32;
p^.location.registerhigh:=getregister32;
emit_reg_reg(A_MOV,S_L,p^.left^.location.registerlow,p^.location.registerlow);
emit_reg_reg(A_MOV,S_L,p^.left^.location.registerhigh,p^.location.registerhigh);
exprasmlist^.concat(new(pai386,op_reg(A_NOT,S_L,p^.location.registerlow)));
exprasmlist^.concat(new(pai386,op_reg(A_NOT,S_L,p^.location.registerhigh)));
end;
LOC_REFERENCE,LOC_MEM :
begin
del_reference(p^.left^.location.reference);
p^.location.registerlow:=getregister32;
p^.location.registerhigh:=getregister32;
exprasmlist^.concat(new(pai386,op_ref_reg(A_MOV,S_L,
newreference(p^.left^.location.reference),p^.location.registerlow)));
hr:=newreference(p^.left^.location.reference);
inc(hr^.offset,4);
exprasmlist^.concat(new(pai386,op_ref_reg(A_MOV,S_L,
hr,p^.location.registerhigh)));
exprasmlist^.concat(new(pai386,op_reg(A_NOT,S_L,p^.location.registerlow)));
exprasmlist^.concat(new(pai386,op_reg(A_NOT,S_L,p^.location.registerhigh)));
end;
end;
end
else
begin
secondpass(p^.left);
clear_location(p^.location);
p^.location.loc:=LOC_REGISTER;
case p^.left^.location.loc of
LOC_REGISTER :
begin
p^.location.register:=p^.left^.location.register;
exprasmlist^.concat(new(pai386,op_reg(A_NOT,S_L,p^.location.register)));
end;
LOC_CREGISTER :
begin
p^.location.register:=getregister32;
emit_reg_reg(A_MOV,S_L,p^.left^.location.register,p^.location.register);
exprasmlist^.concat(new(pai386,op_reg(A_NOT,S_L,p^.location.register)));
end;
LOC_REFERENCE,LOC_MEM :
begin
del_reference(p^.left^.location.reference);
p^.location.register:=getregister32;
exprasmlist^.concat(new(pai386,op_ref_reg(A_MOV,S_L,
newreference(p^.left^.location.reference),p^.location.register)));
exprasmlist^.concat(new(pai386,op_reg(A_NOT,S_L,p^.location.register)));
end;
end;
end;
end;
end.
{
$Log$
Revision 1.28 1999-08-03 22:02:45 peter
* moved bitmask constants to sets
* some other type/const renamings
Revision 1.27 1999/06/28 22:29:14 florian
* qword division fixed
+ code for qword/int64 type casting added:
range checking isn't implemented yet
Revision 1.26 1999/06/02 10:11:44 florian
* make cycle fixed i.e. compilation with 0.99.10
* some fixes for qword
* start of register calling conventions
Revision 1.25 1999/05/27 19:44:16 peter
* removed oldasm
* plabel -> pasmlabel
* -a switches to source writing automaticly
* assembler readers OOPed
* asmsymbol automaticly external
* jumptables and other label fixes for asm readers
Revision 1.24 1999/05/25 20:36:13 florian
* some bugs in the qword code generation fixed
Revision 1.23 1999/05/08 20:41:08 jonas
+ positive number MOD power of 2 now done with AND instruction
* fix to division of positive numbers by power of 2
* the result of a MOD is left in EDX if possible
Revision 1.22 1999/05/01 13:24:11 peter
* merged nasm compiler
* old asm moved to oldasm/
Revision 1.21 1999/04/16 13:42:27 jonas
* more regalloc fixes (still not complete)
Revision 1.20 1999/02/22 02:15:13 peter
* updates for ag386bin
Revision 1.19 1999/02/04 10:49:40 florian
+ range checking for ansi- and widestrings
* made it compilable with TP
Revision 1.18 1999/02/03 10:11:12 pierre
* fix for bug0211 for i386
Revision 1.17 1999/01/21 22:10:41 peter
* fixed array of const
* generic platform independent high() support
Revision 1.16 1999/01/19 10:51:32 pierre
* fix to bug0183 in secondnot
Revision 1.15 1998/12/11 16:50:22 florian
+ typed const int64 and qword
+ unary minus-operator q1:=-q2;
+ not-operator
Revision 1.14 1998/12/11 16:10:07 florian
+ shifting for 64 bit ints added
* bug in getexplicitregister32 fixed: usableregs wasn't decremented !!
Revision 1.13 1998/12/11 00:02:52 peter
+ globtype,tokens,version unit splitted from globals
Revision 1.12 1998/11/26 21:45:29 jonas
- removed A_CLTD opcode (use A_CDQ instead)
* changed cbw, cwde and cwd to cbtw, cwtl and cwtd in att_op2str array
* in daopt386: adapted AsmInstr array to reflect changes + fixed line too long
Revision 1.11 1998/11/05 14:26:02 peter
* fixed shlshr which would push ecx when not needed
Revision 1.10 1998/10/20 13:12:38 peter
* fixed 'not not boolean', the location was not set to register
Revision 1.9 1998/10/20 08:06:42 pierre
* several memory corruptions due to double freemem solved
=> never use p^.loc.location:=p^.left^.loc.location;
+ finally I added now by default
that ra386dir translates global and unit symbols
+ added a first field in tsymtable and
a nextsym field in tsym
(this allows to obtain ordered type info for
records and objects in gdb !)
Revision 1.8 1998/10/09 08:56:24 pierre
* several memory leaks fixed
Revision 1.7 1998/09/17 09:42:17 peter
+ pass_2 for cg386
* Message() -> CGMessage() for pass_1/pass_2
Revision 1.6 1998/09/09 14:37:37 florian
* mod/div for cardinal type fixed
Revision 1.5 1998/08/23 16:07:20 florian
* internalerror with mod/div fixed
Revision 1.4 1998/08/18 09:24:38 pierre
* small warning position bug fixed
* support_mmx switches splitting was missing
* rhide error and warning output corrected
Revision 1.3 1998/06/05 17:44:12 peter
* splitted cgi386
Revision 1.2 1998/06/02 17:02:59 pierre
* with node corrected for objects
* small bugs for SUPPORT_MMX fixed
Revision 1.1 1998/06/01 16:50:18 peter
+ boolean -> ord conversion
* fixed ord -> boolean conversion
}
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