{
$Id: ncgmem.pas,v 1.83 2003/12/06 01:15:22 florian Exp $
Copyright (c) 1998-2002 by Florian Klaempfl
Generate assembler for memory related nodes which are
the same for all (most?) processors
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.
****************************************************************************
}
{ This unit generate assembler for memory related nodes.
}
unit ncgmem;
{$i fpcdefs.inc}
interface
uses
cgbase,cpuinfo,cpubase,
node,nmem;
type
tcgloadvmtaddrnode = class(tloadvmtaddrnode)
procedure pass_2;override;
end;
tcgloadparentfpnode = class(tloadparentfpnode)
procedure pass_2;override;
end;
tcgaddrnode = class(taddrnode)
procedure pass_2;override;
end;
tcgderefnode = class(tderefnode)
procedure pass_2;override;
end;
tcgsubscriptnode = class(tsubscriptnode)
procedure pass_2;override;
end;
tcgwithnode = class(twithnode)
procedure pass_2;override;
end;
tcgvecnode = class(tvecnode)
private
procedure rangecheck_array;
protected
function get_mul_size : longint;
{# This routine is used to calculate the address of the reference.
On entry reg contains the index in the array,
and l contains the size of each element in the array.
This routine should update location.reference correctly,
so it points to the correct address.
}
procedure update_reference_reg_mul(reg:tregister;l:aword);virtual;
procedure second_wideansistring;virtual;
procedure second_dynamicarray;virtual;
public
procedure pass_2;override;
end;
implementation
uses
{$ifdef delphi}
sysutils,
{$else}
strings,
{$endif}
{$ifdef GDB}
gdb,
{$endif GDB}
globtype,systems,
cutils,verbose,globals,
symconst,symdef,symsym,defutil,paramgr,
aasmbase,aasmtai,
procinfo,pass_2,
pass_1,nld,ncon,nadd,
cgobj,tgobj,ncgutil,symbase
;
{*****************************************************************************
TCGLOADVMTADDRNODE
*****************************************************************************}
procedure tcgloadvmtaddrnode.pass_2;
var
href : treference;
begin
location_reset(location,LOC_REGISTER,OS_ADDR);
if (left.nodetype<>typen) then
begin
{ left contains self, load vmt from self }
secondpass(left);
if is_object(left.resulttype.def) then
begin
case left.location.loc of
LOC_CREFERENCE,
LOC_REFERENCE:
begin
location_release(exprasmlist,left.location);
reference_reset_base(href,cg.getaddressregister(exprasmlist),tobjectdef(left.resulttype.def).vmt_offset);
cg.a_loadaddr_ref_reg(exprasmlist,left.location.reference,href.base);
end;
else
internalerror(200305056);
end;
end
else
begin
case left.location.loc of
LOC_REGISTER:
begin
{$ifdef cpu_uses_separate_address_registers}
if getregtype(left.location.register)<>R_ADDRESSREGISTER then
begin
location_release(exprasmlist,left.location);
reference_reset_base(href,cg.getaddressregister(exprasmlist),tobjectdef(left.resulttype.def).vmt_offset);
cg.a_load_reg_reg(exprasmlist,OS_ADDR,OS_ADDR,left.location.register,href.base);
end
else
{$endif}
reference_reset_base(href,left.location.register,tobjectdef(left.resulttype.def).vmt_offset);
end;
LOC_CREGISTER,
LOC_CREFERENCE,
LOC_REFERENCE:
begin
location_release(exprasmlist,left.location);
reference_reset_base(href,cg.getaddressregister(exprasmlist),tobjectdef(left.resulttype.def).vmt_offset);
cg.a_load_loc_reg(exprasmlist,OS_ADDR,left.location,href.base);
end;
else
internalerror(200305057);
end;
end;
reference_release(exprasmlist,href);
location.register:=cg.getaddressregister(exprasmlist);
cg.g_maybe_testself(exprasmlist,href.base);
cg.a_load_ref_reg(exprasmlist,OS_ADDR,OS_ADDR,href,location.register);
end
else
begin
reference_reset_symbol(href,
objectlibrary.newasmsymboldata(tobjectdef(tclassrefdef(resulttype.def).pointertype.def).vmt_mangledname),0);
location.register:=cg.getaddressregister(exprasmlist);
cg.a_loadaddr_ref_reg(exprasmlist,href,location.register);
end;
end;
{*****************************************************************************
TCGLOADPARENTFPNODE
*****************************************************************************}
procedure tcgloadparentfpnode.pass_2;
var
currpi : tprocinfo;
hsym : tvarsym;
href : treference;
begin
if (current_procinfo.procdef.parast.symtablelevel=parentpd.parast.symtablelevel) then
begin
location_reset(location,LOC_REGISTER,OS_ADDR);
location.register:=current_procinfo.framepointer;
end
else
begin
currpi:=current_procinfo;
location_reset(location,LOC_REGISTER,OS_ADDR);
location.register:=cg.getaddressregister(exprasmlist);
{ load framepointer of current proc }
hsym:=tvarsym(currpi.procdef.parast.search('parentfp'));
if not assigned(hsym) then
internalerror(200309281);
case hsym.localloc.loc of
LOC_REFERENCE :
begin
reference_reset_base(href,hsym.localloc.reference.index,hsym.localloc.reference.offset);
cg.a_load_ref_reg(exprasmlist,OS_ADDR,OS_ADDR,href,location.register);
end;
LOC_REGISTER :
cg.a_load_reg_reg(exprasmlist,OS_ADDR,OS_ADDR,hsym.localloc.register,location.register);
end;
{ walk parents }
while (currpi.procdef.owner.symtablelevel>parentpd.parast.symtablelevel) do
begin
currpi:=currpi.parent;
if not assigned(currpi) then
internalerror(200311201);
hsym:=tvarsym(currpi.procdef.parast.search('parentfp'));
if not assigned(hsym) then
internalerror(200309282);
if hsym.localloc.loc<>LOC_REFERENCE then
internalerror(200309283);
reference_reset_base(href,location.register,hsym.localloc.reference.offset);
cg.a_load_ref_reg(exprasmlist,OS_ADDR,OS_ADDR,href,location.register);
end;
end;
end;
{*****************************************************************************
TCGADDRNODE
*****************************************************************************}
procedure tcgaddrnode.pass_2;
begin
secondpass(left);
{ when loading procvar we do nothing with this node, so load the
location of left }
if nf_procvarload in flags then
begin
location_copy(location,left.location);
exit;
end;
location_release(exprasmlist,left.location);
location_reset(location,LOC_REGISTER,OS_ADDR);
location.register:=cg.getaddressregister(exprasmlist);
{ @ on a procvar means returning an address to the procedure that
is stored in it }
if (m_tp_procvar in aktmodeswitches) and
(left.nodetype=loadn) and
(tloadnode(left).resulttype.def.deftype=procvardef) and
assigned(tloadnode(left).symtableentry) and
(tloadnode(left).symtableentry.typ=varsym) then
cg.a_load_ref_reg(exprasmlist,OS_ADDR,OS_ADDR,left.location.reference,location.register)
else
cg.a_loadaddr_ref_reg(exprasmlist,left.location.reference,location.register);
end;
{*****************************************************************************
TCGDEREFNODE
*****************************************************************************}
procedure tcgderefnode.pass_2;
var
paraloc1 : tparalocation;
begin
secondpass(left);
location_reset(location,LOC_REFERENCE,def_cgsize(resulttype.def));
case left.location.loc of
LOC_REGISTER:
begin
{$ifdef cpu_uses_separate_address_registers}
if getregtype(left.location.register)<>R_ADDRESSREGISTER then
begin
location_release(exprasmlist,left.location);
location.reference.base := cg.getaddressregister(exprasmlist);
cg.a_load_reg_reg(exprasmlist,OS_ADDR,OS_ADDR,left.location.register,
location.reference.base);
end
else
{$endif}
location.reference.base := left.location.register;
end;
LOC_CREGISTER,
LOC_CREFERENCE,
LOC_REFERENCE:
begin
location_release(exprasmlist,left.location);
location.reference.base:=cg.getaddressregister(exprasmlist);
cg.a_load_loc_reg(exprasmlist,OS_ADDR,left.location,location.reference.base);
end;
end;
if (cs_gdb_heaptrc in aktglobalswitches) and
(cs_checkpointer in aktglobalswitches) and
not(cs_compilesystem in aktmoduleswitches) and
(not tpointerdef(left.resulttype.def).is_far) then
begin
paraloc1:=paramanager.getintparaloc(pocall_default,1);
paramanager.allocparaloc(exprasmlist,paraloc1);
cg.a_param_reg(exprasmlist, OS_ADDR,location.reference.base,paraloc1);
paramanager.freeparaloc(exprasmlist,paraloc1);
{ FPC_CHECKPOINTER uses saveregisters }
cg.a_call_name(exprasmlist,'FPC_CHECKPOINTER');
end;
end;
{*****************************************************************************
TCGSUBSCRIPTNODE
*****************************************************************************}
procedure tcgsubscriptnode.pass_2;
var
paraloc1 : tparalocation;
begin
secondpass(left);
if codegenerror then
exit;
{ classes and interfaces must be dereferenced implicit }
if is_class_or_interface(left.resulttype.def) then
begin
location_reset(location,LOC_REFERENCE,def_cgsize(resulttype.def));
case left.location.loc of
LOC_CREGISTER,
LOC_REGISTER:
begin
{$ifdef cpu_uses_separate_address_registers}
if getregtype(left.location.register)<>R_ADDRESSREGISTER then
begin
location_release(exprasmlist,left.location);
location.reference.base:=rg.getaddressregister(exprasmlist);
cg.a_load_reg_reg(exprasmlist,OS_ADDR,OS_ADDR,
left.location.register,location.reference.base);
end
else
{$endif}
location.reference.base := left.location.register;
end;
LOC_CREFERENCE,
LOC_REFERENCE:
begin
location_release(exprasmlist,left.location);
location.reference.base:=cg.getaddressregister(exprasmlist);
cg.a_load_loc_reg(exprasmlist,OS_ADDR,left.location,location.reference.base);
end;
end;
{ implicit deferencing }
if (cs_gdb_heaptrc in aktglobalswitches) and
(cs_checkpointer in aktglobalswitches) and
not(cs_compilesystem in aktmoduleswitches) then
begin
paraloc1:=paramanager.getintparaloc(pocall_default,1);
paramanager.allocparaloc(exprasmlist,paraloc1);
cg.a_param_reg(exprasmlist, OS_ADDR,location.reference.base,paraloc1);
paramanager.freeparaloc(exprasmlist,paraloc1);
{ FPC_CHECKPOINTER uses saveregisters }
cg.a_call_name(exprasmlist,'FPC_CHECKPOINTER');
end;
end
else if is_interfacecom(left.resulttype.def) then
begin
tg.GetTempTyped(exprasmlist,left.resulttype.def,tt_normal,location.reference);
cg.a_load_loc_ref(exprasmlist,OS_ADDR,left.location,location.reference);
{ implicit deferencing also for interfaces }
if (cs_gdb_heaptrc in aktglobalswitches) and
(cs_checkpointer in aktglobalswitches) and
not(cs_compilesystem in aktmoduleswitches) then
begin
paraloc1:=paramanager.getintparaloc(pocall_default,1);
paramanager.allocparaloc(exprasmlist,paraloc1);
cg.a_param_reg(exprasmlist, OS_ADDR,location.reference.base,paraloc1);
paramanager.freeparaloc(exprasmlist,paraloc1);
{ FPC_CHECKPOINTER uses saveregisters }
cg.a_call_name(exprasmlist,'FPC_CHECKPOINTER');
end;
end
else
location_copy(location,left.location);
inc(location.reference.offset,vs.fieldoffset);
{ also update the size of the location }
location.size:=def_cgsize(resulttype.def);
end;
{*****************************************************************************
TCGWITHNODE
*****************************************************************************}
procedure tcgwithnode.pass_2;
{$ifdef GDB}
const
withlevel : longint = 0;
var
withstartlabel,withendlabel : tasmlabel;
pp : pchar;
mangled_length : longint;
refnode : tnode;
{$endif GDB}
begin
location_reset(location,LOC_VOID,OS_NO);
{$ifdef GDB}
if (cs_debuginfo in aktmoduleswitches) then
begin
{ load reference }
if (withrefnode.nodetype=derefn) and
(tderefnode(withrefnode).left.nodetype=temprefn) then
refnode:=tderefnode(withrefnode).left
else
refnode:=withrefnode;
secondpass(refnode);
location_release(exprasmlist,refnode.location);
location_freetemp(exprasmlist,refnode.location);
if not(refnode.location.loc in [LOC_REFERENCE,LOC_CREFERENCE]) then
internalerror(2003092810);
inc(withlevel);
objectlibrary.getaddrlabel(withstartlabel);
objectlibrary.getaddrlabel(withendlabel);
cg.a_label(exprasmlist,withstartlabel);
withdebugList.concat(Tai_stabs.Create(strpnew(
'"with'+tostr(withlevel)+':'+tostr(symtablestack.getnewtypecount)+
'=*'+tstoreddef(left.resulttype.def).numberstring+'",'+
tostr(N_LSYM)+',0,0,'+tostr(refnode.location.reference.offset))));
mangled_length:=length(current_procinfo.procdef.mangledname);
getmem(pp,mangled_length+50);
strpcopy(pp,'192,0,0,'+withstartlabel.name);
if (target_info.use_function_relative_addresses) then
begin
strpcopy(strend(pp),'-');
strpcopy(strend(pp),current_procinfo.procdef.mangledname);
end;
withdebugList.concat(Tai_stabn.Create(strnew(pp)));
end;
{$endif GDB}
if assigned(left) then
secondpass(left);
{$ifdef GDB}
if (cs_debuginfo in aktmoduleswitches) then
begin
cg.a_label(exprasmlist,withendlabel);
strpcopy(pp,'224,0,0,'+withendlabel.name);
if (target_info.use_function_relative_addresses) then
begin
strpcopy(strend(pp),'-');
strpcopy(strend(pp),current_procinfo.procdef.mangledname);
end;
withdebugList.concat(Tai_stabn.Create(strnew(pp)));
freemem(pp,mangled_length+50);
dec(withlevel);
end;
{$endif GDB}
end;
{*****************************************************************************
TCGVECNODE
*****************************************************************************}
function tcgvecnode.get_mul_size : longint;
begin
if nf_memindex in flags then
get_mul_size:=1
else
begin
if (left.resulttype.def.deftype=arraydef) then
get_mul_size:=tarraydef(left.resulttype.def).elesize
else
get_mul_size:=resulttype.def.size;
end
end;
procedure tcgvecnode.update_reference_reg_mul(reg:tregister;l:aword);
var
hreg: tregister;
begin
if location.reference.base=NR_NO then
begin
cg.a_op_const_reg(exprasmlist,OP_IMUL,OS_ADDR,l,reg);
location.reference.base:=reg;
end
else if location.reference.index=NR_NO then
begin
cg.a_op_const_reg(exprasmlist,OP_IMUL,OS_ADDR,l,reg);
location.reference.index:=reg;
end
else
begin
cg.ungetreference(exprasmlist,location.reference);
hreg := cg.getaddressregister(exprasmlist);
cg.a_loadaddr_ref_reg(exprasmlist,location.reference,hreg);
reference_reset_base(location.reference,hreg,0);
{ insert new index register }
cg.a_op_const_reg(exprasmlist,OP_IMUL,OS_ADDR,l,reg);
location.reference.index:=reg;
end;
end;
procedure tcgvecnode.second_wideansistring;
begin
end;
procedure tcgvecnode.second_dynamicarray;
begin
end;
procedure tcgvecnode.rangecheck_array;
var
freereg : boolean;
hightree : tnode;
poslabel,
neglabel : tasmlabel;
hreg : tregister;
paraloc1,paraloc2 : tparalocation;
begin
if is_open_array(left.resulttype.def) or
is_array_of_const(left.resulttype.def) then
begin
{ cdecl functions don't have high() so we can not check the range }
if not(current_procinfo.procdef.proccalloption in [pocall_cdecl,pocall_cppdecl]) then
begin
{ Get high value }
hightree:=load_high_value_node(tvarsym(tloadnode(left).symtableentry));
{ it must be available }
if not assigned(hightree) then
internalerror(200212201);
firstpass(hightree);
secondpass(hightree);
{ generate compares }
freereg:=false;
if (right.location.loc in [LOC_REGISTER,LOC_CREGISTER]) then
hreg:=right.location.register
else
begin
hreg:=cg.getintregister(exprasmlist,OS_INT);
freereg:=true;
cg.a_load_loc_reg(exprasmlist,OS_INT,right.location,hreg);
end;
objectlibrary.getlabel(neglabel);
objectlibrary.getlabel(poslabel);
cg.a_cmp_const_reg_label(exprasmlist,OS_INT,OC_LT,0,hreg,poslabel);
location_release(exprasmlist,hightree.location);
cg.a_cmp_loc_reg_label(exprasmlist,OS_INT,OC_BE,hightree.location,hreg,neglabel);
if freereg then
cg.ungetregister(exprasmlist,hreg);
cg.a_label(exprasmlist,poslabel);
cg.a_call_name(exprasmlist,'FPC_RANGEERROR');
cg.a_label(exprasmlist,neglabel);
{ release hightree }
hightree.free;
end;
end
else
if is_dynamic_array(left.resulttype.def) then
begin
paraloc1:=paramanager.getintparaloc(pocall_default,1);
paraloc2:=paramanager.getintparaloc(pocall_default,2);
paramanager.allocparaloc(exprasmlist,paraloc2);
cg.a_param_loc(exprasmlist,right.location,paraloc2);
paramanager.allocparaloc(exprasmlist,paraloc1);
cg.a_param_loc(exprasmlist,left.location,paraloc1);
paramanager.freeparaloc(exprasmlist,paraloc1);
paramanager.freeparaloc(exprasmlist,paraloc2);
cg.allocexplicitregisters(exprasmlist,R_INTREGISTER,paramanager.get_volatile_registers_int(pocall_default));
cg.a_call_name(exprasmlist,'FPC_DYNARRAY_RANGECHECK');
cg.deallocexplicitregisters(exprasmlist,R_INTREGISTER,paramanager.get_volatile_registers_int(pocall_default));
end
else
cg.g_rangecheck(exprasmlist,right.location,right.resulttype.def,left.resulttype.def);
end;
procedure tcgvecnode.pass_2;
var
extraoffset : longint;
t : tnode;
href : treference;
otl,ofl : tasmlabel;
newsize : tcgsize;
mulsize: longint;
isjump : boolean;
paraloc1,paraloc2 : tparalocation;
begin
mulsize := get_mul_size;
newsize:=def_cgsize(resulttype.def);
secondpass(left);
if left.location.loc=LOC_CREFERENCE then
location_reset(location,LOC_CREFERENCE,newsize)
else
location_reset(location,LOC_REFERENCE,newsize);
{ an ansistring needs to be dereferenced }
if is_ansistring(left.resulttype.def) or
is_widestring(left.resulttype.def) then
begin
if nf_callunique in flags then
internalerror(200304236);
case left.location.loc of
LOC_REGISTER,
LOC_CREGISTER :
location.reference.base:=left.location.register;
LOC_CREFERENCE,
LOC_REFERENCE :
begin
location_release(exprasmlist,left.location);
location.reference.base:=cg.getaddressregister(exprasmlist);
cg.a_load_ref_reg(exprasmlist,OS_ADDR,OS_ADDR,left.location.reference,location.reference.base);
end;
else
internalerror(2002032218);
end;
{ check for a zero length string,
we can use the ansistring routine here }
if (cs_check_range in aktlocalswitches) then
begin
paraloc1:=paramanager.getintparaloc(pocall_default,1);
paramanager.allocparaloc(exprasmlist,paraloc1);
cg.a_param_reg(exprasmlist,OS_ADDR,location.reference.base,paraloc1);
paramanager.freeparaloc(exprasmlist,paraloc1);
cg.allocexplicitregisters(exprasmlist,R_INTREGISTER,paramanager.get_volatile_registers_int(pocall_default));
cg.a_call_name(exprasmlist,'FPC_'+upper(tstringdef(left.resulttype.def).stringtypname)+'_CHECKZERO');
cg.deallocexplicitregisters(exprasmlist,R_INTREGISTER,paramanager.get_volatile_registers_int(pocall_default));
end;
{ in ansistrings/widestrings S[1] is p<w>char(S)[0] !! }
if is_ansistring(left.resulttype.def) then
dec(location.reference.offset)
else
dec(location.reference.offset,2);
end
else if is_dynamic_array(left.resulttype.def) then
begin
case left.location.loc of
LOC_REGISTER,
LOC_CREGISTER :
location.reference.base:=left.location.register;
LOC_REFERENCE,
LOC_CREFERENCE :
begin
location_release(exprasmlist,left.location);
location.reference.base:=cg.getaddressregister(exprasmlist);
cg.a_load_ref_reg(exprasmlist,OS_ADDR,OS_ADDR,
left.location.reference,location.reference.base);
end;
else
internalerror(2002032219);
end;
end
else
location_copy(location,left.location);
{ offset can only differ from 0 if arraydef }
if (left.resulttype.def.deftype=arraydef) and
not(is_dynamic_array(left.resulttype.def)) then
dec(location.reference.offset,mulsize*tarraydef(left.resulttype.def).lowrange);
if right.nodetype=ordconstn then
begin
{ offset can only differ from 0 if arraydef }
case left.resulttype.def.deftype of
arraydef :
begin
if not(is_open_array(left.resulttype.def)) and
not(is_array_of_const(left.resulttype.def)) and
not(is_dynamic_array(left.resulttype.def)) then
begin
if (tordconstnode(right).value>tarraydef(left.resulttype.def).highrange) or
(tordconstnode(right).value<tarraydef(left.resulttype.def).lowrange) then
begin
{ this should be caught in the resulttypepass! (JM) }
if (cs_check_range in aktlocalswitches) then
CGMessage(parser_e_range_check_error)
else
CGMessage(parser_w_range_check_error);
end;
end
else
begin
{ range checking for open and dynamic arrays needs
runtime code }
secondpass(right);
if (cs_check_range in aktlocalswitches) then
rangecheck_array;
end;
end;
stringdef :
begin
if (cs_check_range in aktlocalswitches) then
begin
case tstringdef(left.resulttype.def).string_typ of
{ it's the same for ansi- and wide strings }
st_widestring,
st_ansistring:
begin
paraloc1:=paramanager.getintparaloc(pocall_default,1);
paraloc2:=paramanager.getintparaloc(pocall_default,2);
paramanager.allocparaloc(exprasmlist,paraloc2);
cg.a_param_const(exprasmlist,OS_INT,tordconstnode(right).value,paraloc2);
href:=location.reference;
dec(href.offset,7);
paramanager.allocparaloc(exprasmlist,paraloc1);
cg.a_param_ref(exprasmlist,OS_INT,href,paraloc1);
paramanager.freeparaloc(exprasmlist,paraloc1);
paramanager.freeparaloc(exprasmlist,paraloc2);
cg.allocexplicitregisters(exprasmlist,R_INTREGISTER,paramanager.get_volatile_registers_int(pocall_default));
cg.a_call_name(exprasmlist,'FPC_'+upper(tstringdef(left.resulttype.def).stringtypname)+'_RANGECHECK');
cg.deallocexplicitregisters(exprasmlist,R_INTREGISTER,paramanager.get_volatile_registers_int(pocall_default));
end;
st_shortstring:
begin
{!!!!!!!!!!!!!!!!!}
end;
st_longstring:
begin
{!!!!!!!!!!!!!!!!!}
end;
end;
end;
end;
end;
inc(location.reference.offset,
mulsize*tordconstnode(right).value);
end
else
{ not nodetype=ordconstn }
begin
if (cs_regvars in aktglobalswitches) and
{ if we do range checking, we don't }
{ need that fancy code (it would be }
{ buggy) }
not(cs_check_range in aktlocalswitches) and
(left.resulttype.def.deftype=arraydef) then
begin
extraoffset:=0;
if (right.nodetype=addn) then
begin
if taddnode(right).right.nodetype=ordconstn then
begin
extraoffset:=tordconstnode(taddnode(right).right).value;
t:=taddnode(right).left;
{ First pass processed this with the assumption }
{ that there was an add node which may require an }
{ extra register. Fake it or die with IE10 (JM) }
t.registers32 := taddnode(right).registers32;
taddnode(right).left:=nil;
right.free;
right:=t;
end
else if taddnode(right).left.nodetype=ordconstn then
begin
extraoffset:=tordconstnode(taddnode(right).left).value;
t:=taddnode(right).right;
t.registers32 := right.registers32;
taddnode(right).right:=nil;
right.free;
right:=t;
end;
end
else if (right.nodetype=subn) then
begin
if taddnode(right).right.nodetype=ordconstn then
begin
extraoffset:=-tordconstnode(taddnode(right).right).value;
t:=taddnode(right).left;
t.registers32 := right.registers32;
taddnode(right).left:=nil;
right.free;
right:=t;
end
{ You also have to negate right.right in this case! I can't add an
unaryminusn without causing a crash, so I've disabled it (JM)
else if right.left.nodetype=ordconstn then
begin
extraoffset:=right.left.value;
t:=right.right;
t^.registers32 := right.registers32;
putnode(right);
putnode(right.left);
right:=t;
end;}
end;
inc(location.reference.offset,
mulsize*extraoffset);
end;
{ calculate from left to right }
if not(location.loc in [LOC_CREFERENCE,LOC_REFERENCE]) then
internalerror(200304237);
isjump:=(right.location.loc=LOC_JUMP);
if isjump then
begin
otl:=truelabel;
objectlibrary.getlabel(truelabel);
ofl:=falselabel;
objectlibrary.getlabel(falselabel);
end;
secondpass(right);
if cs_check_range in aktlocalswitches then
begin
if left.resulttype.def.deftype=arraydef then
rangecheck_array;
end;
{ if mulsize = 1, we won't have to modify the index }
location_force_reg(exprasmlist,right.location,OS_32,mulsize = 1);
if isjump then
begin
truelabel:=otl;
falselabel:=ofl;
end;
{ produce possible range check code: }
if cs_check_range in aktlocalswitches then
begin
if left.resulttype.def.deftype=arraydef then
begin
{ done defore (PM) }
end
else if (left.resulttype.def.deftype=stringdef) then
begin
case tstringdef(left.resulttype.def).string_typ of
{ it's the same for ansi- and wide strings }
st_widestring,
st_ansistring:
begin
paraloc1:=paramanager.getintparaloc(pocall_default,1);
paraloc2:=paramanager.getintparaloc(pocall_default,2);
paramanager.allocparaloc(exprasmlist,paraloc2);
cg.a_param_reg(exprasmlist,OS_INT,right.location.register,paraloc2);
href:=location.reference;
dec(href.offset,7);
paramanager.allocparaloc(exprasmlist,paraloc1);
cg.a_param_ref(exprasmlist,OS_INT,href,paraloc1);
paramanager.freeparaloc(exprasmlist,paraloc1);
paramanager.freeparaloc(exprasmlist,paraloc2);
cg.allocexplicitregisters(exprasmlist,R_INTREGISTER,paramanager.get_volatile_registers_int(pocall_default));
cg.a_call_name(exprasmlist,'FPC_'+upper(tstringdef(left.resulttype.def).stringtypname)+'_RANGECHECK');
cg.deallocexplicitregisters(exprasmlist,R_INTREGISTER,paramanager.get_volatile_registers_int(pocall_default));
end;
st_shortstring:
begin
{!!!!!!!!!!!!!!!!!}
end;
st_longstring:
begin
{!!!!!!!!!!!!!!!!!}
end;
end;
end;
end;
{ insert the register and the multiplication factor in the
reference }
update_reference_reg_mul(right.location.register,mulsize);
end;
location.size:=newsize;
end;
begin
cloadvmtaddrnode:=tcgloadvmtaddrnode;
cloadparentfpnode:=tcgloadparentfpnode;
caddrnode:=tcgaddrnode;
cderefnode:=tcgderefnode;
csubscriptnode:=tcgsubscriptnode;
cwithnode:=tcgwithnode;
cvecnode:=tcgvecnode;
end.
{
$Log: ncgmem.pas,v $
Revision 1.83 2003/12/06 01:15:22 florian
* reverted Peter's alloctemp patch; hopefully properly
Revision 1.82 2003/12/03 23:13:20 peter
* delayed paraloc allocation, a_param_*() gets extra parameter
if it needs to allocate temp or real paralocation
* optimized/simplified int-real loading
Revision 1.81 2003/11/23 17:03:35 peter
* fixed parentfp loading, it was using the offset of the current
nested proc instead of the parent
Revision 1.80 2003/11/04 15:35:13 peter
* fix for referencecounted temps
Revision 1.79 2003/10/10 17:48:13 peter
* old trgobj moved to x86/rgcpu and renamed to trgx86fpu
* tregisteralloctor renamed to trgobj
* removed rgobj from a lot of units
* moved location_* and reference_* to cgobj
* first things for mmx register allocation
Revision 1.78 2003/10/09 21:31:37 daniel
* Register allocator splitted, ans abstract now
Revision 1.77 2003/10/01 20:34:48 peter
* procinfo unit contains tprocinfo
* cginfo renamed to cgbase
* moved cgmessage to verbose
* fixed ppc and sparc compiles
Revision 1.76 2003/09/29 20:58:56 peter
* optimized releasing of registers
Revision 1.75 2003/09/28 21:45:52 peter
* fix register leak in with debug
Revision 1.74 2003/09/28 17:55:03 peter
* parent framepointer changed to hidden parameter
* tloadparentfpnode added
Revision 1.73 2003/09/23 17:56:05 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 1.72 2003/09/10 08:31:47 marco
* Patch from Peter for paraloc
Revision 1.71 2003/09/07 22:09:35 peter
* preparations for different default calling conventions
* various RA fixes
Revision 1.70 2003/09/03 15:55:00 peter
* NEWRA branch merged
Revision 1.69.2.1 2003/08/29 17:28:59 peter
* next batch of updates
Revision 1.69 2003/08/10 17:25:23 peter
* fixed some reported bugs
Revision 1.68 2003/08/09 18:56:54 daniel
* cs_regalloc renamed to cs_regvars to avoid confusion with register
allocator
* Some preventive changes to i386 spillinh code
Revision 1.67 2003/07/23 11:01:14 jonas
* several rg.allocexplicitregistersint/rg.deallocexplicitregistersint
pairs round calls to helpers
Revision 1.66 2003/07/06 21:50:33 jonas
* fixed ppc compilation problems and changed VOLATILE_REGISTERS for x86
so that it doesn't include ebp and esp anymore
Revision 1.65 2003/07/06 15:31:20 daniel
* Fixed register allocator. *Lots* of fixes.
Revision 1.64 2003/06/17 19:24:08 jonas
* fixed conversion of fpc_*str_unique to compilerproc
Revision 1.63 2003/06/17 16:34:44 jonas
* lots of newra fixes (need getfuncretparaloc implementation for i386)!
* renamed all_intregisters to paramanager.get_volatile_registers_int(pocall_default) and made it
processor dependent
Revision 1.62 2003/06/13 21:19:30 peter
* current_procdef removed, use current_procinfo.procdef instead
Revision 1.61 2003/06/09 16:45:41 jonas
* fixed update_reference_reg_mul() so that it won't modify CREGISTERs
in a reference
* cache value of get_mul_size()
* if get_mul_size = 1, the index can be a CREGISTER since it won't be
modified
Revision 1.60 2003/06/07 18:57:04 jonas
+ added freeintparaloc
* ppc get/freeintparaloc now check whether the parameter regs are
properly allocated/deallocated (and get an extra list para)
* ppc a_call_* now internalerrors if pi_do_call is not yet set
* fixed lot of missing pi_do_call's
Revision 1.59 2003/06/03 21:11:09 peter
* cg.a_load_* get a from and to size specifier
* makeregsize only accepts newregister
* i386 uses generic tcgnotnode,tcgunaryminus
Revision 1.58 2003/06/03 13:01:59 daniel
* Register allocator finished
Revision 1.57 2003/06/02 22:35:45 florian
* better handling of CREGISTER in subscript nodes
Revision 1.56 2003/06/01 21:38:06 peter
* getregisterfpu size parameter added
* op_const_reg size parameter added
* sparc updates
Revision 1.55 2003/05/30 23:49:18 jonas
* a_load_loc_reg now has an extra size parameter for the destination
register (properly fixes what I worked around in revision 1.106 of
ncgutil.pas)
Revision 1.54 2003/05/15 16:10:37 florian
* fixed getintparaloc call for ansi- and widestring range checking
Revision 1.53 2003/05/11 21:37:03 peter
* moved implicit exception frame from ncgutil to psub
* constructor/destructor helpers moved from cobj/ncgutil to psub
Revision 1.52 2003/05/11 14:45:12 peter
* tloadnode does not support objectsymtable,withsymtable anymore
* withnode cleanup
* direct with rewritten to use temprefnode
Revision 1.51 2003/05/09 17:47:02 peter
* self moved to hidden parameter
* removed hdisposen,hnewn,selfn
Revision 1.50 2003/05/07 09:16:23 mazen
- non used units removed from uses clause
Revision 1.49 2003/04/27 11:21:33 peter
* aktprocdef renamed to current_procinfo.procdef
* procinfo renamed to current_procinfo
* procinfo will now be stored in current_module so it can be
cleaned up properly
* gen_main_procsym changed to create_main_proc and release_main_proc
to also generate a tprocinfo structure
* fixed unit implicit initfinal
Revision 1.48 2003/04/22 23:50:22 peter
* firstpass uses expectloc
* checks if there are differences between the expectloc and
location.loc from secondpass in EXTDEBUG
Revision 1.47 2003/04/22 13:47:08 peter
* fixed C style array of const
* fixed C array passing
* fixed left to right with high parameters
Revision 1.46 2003/04/22 10:09:35 daniel
+ Implemented the actual register allocator
+ Scratch registers unavailable when new register allocator used
+ maybe_save/maybe_restore unavailable when new register allocator used
Revision 1.45 2003/04/06 21:11:23 olle
* changed newasmsymbol to newasmsymboldata for data symbols
Revision 1.44 2003/03/28 19:16:56 peter
* generic constructor working for i386
* remove fixed self register
* esi added as address register for i386
Revision 1.43 2003/03/12 22:43:38 jonas
* more powerpc and generic fixes related to the new register allocator
Revision 1.42 2003/02/19 22:00:14 daniel
* Code generator converted to new register notation
- Horribily outdated todo.txt removed
Revision 1.41 2003/01/30 21:46:57 peter
* self fixes for static methods (merged)
Revision 1.40 2003/01/08 18:43:56 daniel
* Tregister changed into a record
Revision 1.39 2002/12/20 18:13:19 peter
* no rangecheck for openarrays with cdecl
Revision 1.38 2002/12/17 22:19:33 peter
* fixed pushing of records>8 bytes with stdcall
* simplified hightree loading
Revision 1.37 2002/12/08 13:39:03 carl
+ some documentation added
Revision 1.36 2002/12/07 14:14:19 carl
* bugfix on invalid typecast
Revision 1.35 2002/11/25 17:43:18 peter
* splitted defbase in defutil,symutil,defcmp
* merged isconvertable and is_equal into compare_defs(_ext)
* made operator search faster by walking the list only once
Revision 1.34 2002/11/24 18:19:20 carl
+ checkpointer for interfaces also
Revision 1.33 2002/11/23 22:50:06 carl
* some small speed optimizations
+ added several new warnings/hints
Revision 1.32 2002/11/15 01:58:51 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 2002/10/09 20:24:47 florian
+ range checking for dyn. arrays
Revision 1.30 2002/10/07 21:30:45 peter
* rangecheck for open arrays added
Revision 1.29 2002/10/05 12:43:25 carl
* fixes for Delphi 6 compilation
(warning : Some features do not work under Delphi)
Revision 1.28 2002/09/17 18:54:02 jonas
* a_load_reg_reg() now has two size parameters: source and dest. This
allows some optimizations on architectures that don't encode the
register size in the register name.
Revision 1.27 2002/09/07 15:25:03 peter
* old logs removed and tabs fixed
Revision 1.26 2002/09/01 18:46:01 peter
* fixed generic tcgvecnode
* move code that updates a reference with index register and multiplier
to separate method so it can be overriden for scaled indexing
* i386 uses generic tcgvecnode
Revision 1.25 2002/08/23 16:14:48 peter
* tempgen cleanup
* tt_noreuse temp type added that will be used in genentrycode
Revision 1.24 2002/08/15 08:13:54 carl
- a_load_sym_ofs_reg removed
* loadvmt now calls loadaddr_ref_reg instead
Revision 1.23 2002/08/11 14:32:26 peter
* renamed current_library to objectlibrary
Revision 1.22 2002/08/11 13:24:12 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 1.21 2002/08/11 11:36:57 jonas
* always first try to use base and only then index
Revision 1.20 2002/08/11 06:14:40 florian
* fixed powerpc compilation problems
Revision 1.19 2002/08/10 14:46:29 carl
+ moved target_cpu_string to cpuinfo
* renamed asmmode enum.
* assembler reader has now less ifdef's
* move from nppcmem.pas -> ncgmem.pas vec. node.
Revision 1.18 2002/07/28 21:34:31 florian
* more powerpc fixes
+ dummy tcgvecnode
Revision 1.17 2002/07/11 14:41:28 florian
* start of the new generic parameter handling
Revision 1.16 2002/07/07 09:52:32 florian
* powerpc target fixed, very simple units can be compiled
* some basic stuff for better callparanode handling, far from being finished
Revision 1.15 2002/07/01 18:46:23 peter
* internal linker
* reorganized aasm layer
Revision 1.14 2002/07/01 16:23:53 peter
* cg64 patch
* basics for currency
* asnode updates for class and interface (not finished)
Revision 1.13 2002/05/20 13:30:40 carl
* bugfix of hdisponen (base must be set, not index)
* more portability fixes
Revision 1.12 2002/05/18 13:34:09 peter
* readded missing revisions
Revision 1.11 2002/05/16 19:46:37 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 1.9 2002/05/12 16:53:07 peter
* moved entry and exitcode to ncgutil and cgobj
* foreach gets extra argument for passing local data to the
iterator function
* -CR checks also class typecasts at runtime by changing them
into as
* fixed compiler to cycle with the -CR option
* fixed stabs with elf writer, finally the global variables can
be watched
* removed a lot of routines from cga unit and replaced them by
calls to cgobj
* u32bit-s32bit updates for and,or,xor nodes. When one element is
u32bit then the other is typecasted also to u32bit without giving
a rangecheck warning/error.
* fixed pascal calling method with reversing also the high tree in
the parast, detected by tcalcst3 test
Revision 1.8 2002/04/20 21:32:23 carl
+ generic FPC_CHECKPOINTER
+ first parameter offset in stack now portable
* rename some constants
+ move some cpu stuff to other units
- remove unused constents
* fix stacksize for some targets
* fix generic size problems which depend now on EXTEND_SIZE constant
Revision 1.7 2002/04/15 18:58:47 carl
+ target_info.size_of_pointer -> pointer_Size
Revision 1.6 2002/04/04 19:05:57 peter
* removed unused units
* use tlocation.size in cg.a_*loc*() routines
}
syntax highlighted by Code2HTML, v. 0.9.1