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f65d119ea1
fpc/compiler/ncgutil.pas
peter d91c880148 * cg.a_load_* get a from and to size specifier 
* makeregsize only accepts newregister
  * i386 uses generic tcgnotnode,tcgunaryminus
2003-06-03 21:11:09 +00:00

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{
$Id$
Copyright (c) 1998-2002 by Florian Klaempfl
Helper routines for all code generators
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 ncgutil;
{$i fpcdefs.inc}
interface
uses
node,cpuinfo,
globtype,
cpubase,
aasmbase,aasmtai,aasmcpu,
cginfo,symbase,symdef,symtype,
{$ifndef cpu64bit}
cg64f32,
{$endif cpu64bit}
rgobj;
type
tloadregvars = (lr_dont_load_regvars, lr_load_regvars);
tmaybesave = record
saved : boolean;
ref : treference;
end;
procedure firstcomplex(p : tbinarynode);
procedure maketojumpbool(list:TAAsmoutput; p : tnode; loadregvars: tloadregvars);
procedure remove_non_regvars_from_loc(const t: tlocation; var regs:Tsupregset);
procedure location_force_reg(list: TAAsmoutput;var l:tlocation;dst_size:TCGSize;maybeconst:boolean);
procedure location_force_fpureg(list: TAAsmoutput;var l: tlocation;maybeconst:boolean);
procedure location_force_mem(list: TAAsmoutput;var l:tlocation);
{$ifndef newra}
procedure maybe_save(list:taasmoutput;needed:integer;var l:tlocation;var s:tmaybesave);
procedure maybe_restore(list:taasmoutput;var l:tlocation;const s:tmaybesave);
{$endif}
function maybe_pushfpu(list:taasmoutput;needed : byte;var l:tlocation) : boolean;
procedure push_value_para(list:taasmoutput;p:tnode;calloption:tproccalloption;
para_offset:longint;alignment : longint;
const locpara : tparalocation);
procedure genentrycode(list:TAAsmoutput;inlined:boolean);
procedure gen_stackalloc_code(list:Taasmoutput;stackframe:longint);
procedure genexitcode(list:Taasmoutput;inlined:boolean);
procedure geninlineentrycode(list : TAAsmoutput;stackframe:longint);
procedure geninlineexitcode(list : TAAsmoutput;inlined:boolean);
{#
Allocate the buffers for exception management and setjmp environment.
Return a pointer to these buffers, send them to the utility routine
so they are registered, and then call setjmp.
Then compare the result of setjmp with 0, and if not equal
to zero, then jump to exceptlabel.
Also store the result of setjmp to a temporary space by calling g_save_exception_reason
It is to note that this routine may be called *after* the stackframe of a
routine has been called, therefore on machines where the stack cannot
be modified, all temps should be allocated on the heap instead of the
stack.
}
procedure new_exception(list : taasmoutput;const jmpbuf,envbuf, href : treference;
a : aword; exceptlabel : tasmlabel);
procedure free_exception(list : taasmoutput;const jmpbuf, envbuf, href : treference;
a : aword ; endexceptlabel : tasmlabel; onlyfree : boolean);
implementation
uses
{$ifdef Delphi}
Sysutils,
{$else}
strings,
{$endif}
cutils,cclasses,
globals,systems,verbose,
symconst,symsym,symtable,defutil,
paramgr,fmodule,
cgbase,regvars,
{$ifdef GDB}
gdb,
{$endif GDB}
ncon,
tgobj,cgobj;
const
{ Please leave this here, this module should NOT use
exprasmlist, the lists are always passed as arguments.
Declaring it as string here results in an error when compiling (PFV) }
exprasmlist = 'error';
{*****************************************************************************
Misc Helpers
*****************************************************************************}
{ DO NOT RELY on the fact that the tnode is not yet swaped
because of inlining code PM }
procedure firstcomplex(p : tbinarynode);
var
hp : tnode;
begin
{ always calculate boolean AND and OR from left to right }
if (p.nodetype in [orn,andn]) and
is_boolean(p.left.resulttype.def) then
begin
if nf_swaped in p.flags then
internalerror(234234);
end
else
if (
(p.location.loc=LOC_FPUREGISTER) and
(p.right.registersfpu > p.left.registersfpu)
) or
(
(
(
((p.left.registersfpu = 0) and (p.right.registersfpu = 0)) or
(p.location.loc<>LOC_FPUREGISTER)
) and
(p.left.registers32<p.right.registers32)
) and
{ the following check is appropriate, because all }
{ 4 registers are rarely used and it is thereby }
{ achieved that the extra code is being dropped }
{ by exchanging not commutative operators }
(p.right.registers32<=c_countusableregsint)
) then
begin
hp:=p.left;
p.left:=p.right;
p.right:=hp;
if nf_swaped in p.flags then
exclude(p.flags,nf_swaped)
else
include(p.flags,nf_swaped);
end;
end;
procedure maketojumpbool(list:TAAsmoutput; p : tnode; loadregvars: tloadregvars);
{
produces jumps to true respectively false labels using boolean expressions
depending on whether the loading of regvars is currently being
synchronized manually (such as in an if-node) or automatically (most of
the other cases where this procedure is called), loadregvars can be
"lr_load_regvars" or "lr_dont_load_regvars"
}
var
opsize : tcgsize;
storepos : tfileposinfo;
begin
if nf_error in p.flags then
exit;
storepos:=aktfilepos;
aktfilepos:=p.fileinfo;
if is_boolean(p.resulttype.def) then
begin
if loadregvars = lr_load_regvars then
load_all_regvars(list);
if is_constboolnode(p) then
begin
if tordconstnode(p).value<>0 then
cg.a_jmp_always(list,truelabel)
else
cg.a_jmp_always(list,falselabel)
end
else
begin
opsize:=def_cgsize(p.resulttype.def);
case p.location.loc of
LOC_CREGISTER,LOC_REGISTER,LOC_CREFERENCE,LOC_REFERENCE :
begin
if (p.location.loc = LOC_CREGISTER) then
load_regvar_reg(list,p.location.register);
cg.a_cmp_const_loc_label(list,opsize,OC_NE,
0,p.location,truelabel);
{ !!! should happen right after cmp (JM) }
location_release(list,p.location);
cg.a_jmp_always(list,falselabel);
end;
{$ifdef cpuflags}
LOC_FLAGS :
begin
cg.a_jmp_flags(list,p.location.resflags,
truelabel);
cg.a_jmp_always(list,falselabel);
end;
{$endif cpuflags}
end;
end;
end
else
internalerror(200112305);
aktfilepos:=storepos;
end;
procedure remove_non_regvars_from_loc(const t: tlocation; var regs:Tsupregset);
begin
case t.loc of
LOC_REGISTER:
begin
{ can't be a regvar, since it would be LOC_CREGISTER then }
if t.register.enum<>R_INTREGISTER then
internalerror(200301154);
if t.registerhigh.enum<>R_INTREGISTER then
internalerror(200301154);
exclude(regs,t.register.number shr 8);
if t.registerhigh.enum <> R_NO then
exclude(regs,t.registerhigh.number shr 8);
end;
LOC_CREFERENCE,LOC_REFERENCE:
begin
if t.reference.base.enum<>R_INTREGISTER then
internalerror(200301154);
if t.reference.index.enum<>R_INTREGISTER then
internalerror(200301154);
if not(cs_regalloc in aktglobalswitches) or
((t.reference.base.number shr 8) in rg.usableregsint) then
exclude(regs,t.reference.base.number shr 8);
if not(cs_regalloc in aktglobalswitches) or
((t.reference.index.number shr 8) in rg.usableregsint) then
exclude(regs,t.reference.index.number shr 8);
end;
end;
end;
{*****************************************************************************
EXCEPTION MANAGEMENT
*****************************************************************************}
procedure new_exception(list : taasmoutput;const jmpbuf,envbuf, href : treference;
a : aword; exceptlabel : tasmlabel);
var r:Tregister;
begin
cg.a_paramaddr_ref(list,envbuf,paramanager.getintparaloc(3));
cg.a_paramaddr_ref(list,jmpbuf,paramanager.getintparaloc(2));
{ push type of exceptionframe }
cg.a_param_const(list,OS_S32,1,paramanager.getintparaloc(1));
cg.a_call_name(list,'FPC_PUSHEXCEPTADDR');
r.enum:=R_INTREGISTER;
r.number:=NR_FUNCTION_RESULT_REG;
cg.a_param_reg(list,OS_ADDR,r,paramanager.getintparaloc(1));
cg.a_call_name(list,'FPC_SETJMP');
cg.g_exception_reason_save(list, href);
cg.a_cmp_const_reg_label(list,OS_S32,OC_NE,0,r,exceptlabel);
end;
procedure free_exception(list : taasmoutput;const jmpbuf, envbuf, href : treference;
a : aword ; endexceptlabel : tasmlabel; onlyfree : boolean);
var r:Tregister;
begin
cg.a_call_name(list,'FPC_POPADDRSTACK');
if not onlyfree then
begin
cg.g_exception_reason_load(list, href);
r.enum:=R_INTREGISTER;
r.number:=NR_FUNCTION_RESULT_REG;
cg.a_cmp_const_reg_label(list,OS_S32,OC_EQ,a,r,endexceptlabel);
end;
end;
{*****************************************************************************
TLocation
*****************************************************************************}
{$ifndef cpu64bit}
{ 32-bit version }
procedure location_force(list: TAAsmoutput;var l:tlocation;dst_size:TCGSize;maybeconst:boolean);
var
hregister,
hregisterhi : tregister;
hreg64 : tregister64;
hl : tasmlabel;
begin
{ handle transformations to 64bit separate }
if dst_size in [OS_64,OS_S64] then
begin
if not (l.size in [OS_64,OS_S64]) then
begin
{ load a smaller size to OS_64 }
if l.loc=LOC_REGISTER then
begin
hregister.enum:=R_INTREGISTER;
hregister.number:=(l.registerlow.number and not $ff) or R_SUBWHOLE;
cg.a_load_reg_reg(list,l.size,OS_32,l.registerlow,hregister);
end
else
hregister:=rg.getregisterint(list,OS_INT);
{ load value in low register }
case l.loc of
LOC_FLAGS :
cg.g_flags2reg(list,OS_INT,l.resflags,hregister);
LOC_JUMP :
begin
cg.a_label(list,truelabel);
cg.a_load_const_reg(list,OS_INT,1,hregister);
objectlibrary.getlabel(hl);
cg.a_jmp_always(list,hl);
cg.a_label(list,falselabel);
cg.a_load_const_reg(list,OS_INT,0,hregister);
cg.a_label(list,hl);
end;
else
cg.a_load_loc_reg(list,OS_INT,l,hregister);
end;
{ reset hi part, take care of the signed bit of the current value }
hregisterhi:=rg.getregisterint(list,OS_INT);
if (dst_size=OS_S64) and
(l.size in [OS_S8,OS_S16,OS_S32]) then
begin
if l.loc=LOC_CONSTANT then
begin
if (longint(l.value)<0) then
cg.a_load_const_reg(list,OS_32,$ffffffff,hregisterhi)
else
cg.a_load_const_reg(list,OS_32,0,hregisterhi);
end
else
begin
cg.a_op_const_reg_reg(list,OP_SAR,OS_32,31,hregister,
hregisterhi);
end;
end
else
cg.a_load_const_reg(list,OS_32,0,hregisterhi);
location_reset(l,LOC_REGISTER,dst_size);
l.registerlow:=hregister;
l.registerhigh:=hregisterhi;
end
else
begin
{ 64bit to 64bit }
if (l.loc=LOC_REGISTER) or
((l.loc=LOC_CREGISTER) and maybeconst) then
begin
hregister:=l.registerlow;
hregisterhi:=l.registerhigh;
end
else
begin
hregister:=rg.getregisterint(list,OS_INT);
hregisterhi:=rg.getregisterint(list,OS_INT);
end;
hreg64.reglo:=hregister;
hreg64.reghi:=hregisterhi;
{ load value in new register }
cg64.a_load64_loc_reg(list,l,hreg64{$ifdef newra},false{$endif});
location_reset(l,LOC_REGISTER,dst_size);
l.registerlow:=hregister;
l.registerhigh:=hregisterhi;
end;
end
else
begin
{ transformations to 32bit or smaller }
if l.loc=LOC_REGISTER then
begin
{ if the previous was 64bit release the high register }
if l.size in [OS_64,OS_S64] then
begin
rg.ungetregisterint(list,l.registerhigh);
l.registerhigh.enum:=R_NO;
end;
hregister:=l.register;
end
else
begin
{ get new register }
if (l.loc=LOC_CREGISTER) and
maybeconst and
(TCGSize2Size[dst_size]=TCGSize2Size[l.size]) then
hregister:=l.register
else
begin
hregister.enum:=R_INTREGISTER;
hregister.number:=NR_NO;
end;
end;
if hregister.enum<>R_INTREGISTER then
internalerror(200302022);
{ need to load into address register? }
if (dst_size=OS_ADDR) then
begin
if (hregister.number=NR_NO) or
(not rg.isaddressregister(hregister)) then
hregister:=rg.getaddressregister(list);
end
else
begin
if (hregister.number=NR_NO) {or
rg.isaddressregister(hregister)} then
hregister:=rg.getregisterint(list,dst_size);
end;
hregister:=rg.makeregsize(hregister,dst_size);
{$ifdef newra}
rg.add_constraints(hregister.number);
{$endif}
{ load value in new register }
case l.loc of
LOC_FLAGS :
cg.g_flags2reg(list,dst_size,l.resflags,hregister);
LOC_JUMP :
begin
cg.a_label(list,truelabel);
cg.a_load_const_reg(list,dst_size,1,hregister);
objectlibrary.getlabel(hl);
cg.a_jmp_always(list,hl);
cg.a_label(list,falselabel);
cg.a_load_const_reg(list,dst_size,0,hregister);
cg.a_label(list,hl);
end;
else
begin
{ load_loc_reg can only handle size >= l.size, when the
new size is smaller then we need to adjust the size
of the orignal and maybe recalculate l.register for i386 }
if (TCGSize2Size[dst_size]<TCGSize2Size[l.size]) then
begin
if (l.loc in [LOC_REGISTER,LOC_CREGISTER]) then
l.register:=rg.makeregsize(l.register,dst_size);
{ for big endian systems, the reference's offset must }
{ be increased in this case, since they have the }
{ MSB first in memory and e.g. byte(word_var) should }
{ return the second byte in this case (JM) }
if (target_info.endian = ENDIAN_BIG) and
(l.loc in [LOC_REFERENCE,LOC_CREFERENCE]) then
inc(l.reference.offset,TCGSize2Size[l.size]-TCGSize2Size[dst_size]);
{$ifdef i386}
l.size:=dst_size;
{$endif i386}
end;
cg.a_load_loc_reg(list,dst_size,l,hregister);
{$ifndef i386}
if (TCGSize2Size[dst_size]<TCGSize2Size[l.size]) then
l.size:=dst_size;
{$endif not i386}
{ Release old register when the superregister is changed }
if (l.loc=LOC_REGISTER) and
(l.register.number shr 8<>hregister.number shr 8) then
begin
if rg.isaddressregister(l.register) then
rg.ungetaddressregister(list,l.register)
else
rg.ungetregisterint(list,l.register);
end;
end;
end;
if (l.loc <> LOC_CREGISTER) or
not maybeconst then
location_reset(l,LOC_REGISTER,dst_size)
else
location_reset(l,LOC_CREGISTER,dst_size);
l.register:=hregister;
end;
end;
{$else cpu64bit}
{ 64-bit version }
procedure location_force(list: TAAsmoutput;var l:tlocation;dst_size:TCGSize;maybeconst:boolean);
var
hregister : tregister;
hl : tasmlabel;
begin
{ handle transformations to 64bit separate }
if dst_size in [OS_64,OS_S64] then
begin
{ load a smaller size to OS_64 }
if l.loc=LOC_REGISTER then
hregister:=rg.makeregsize(l.register,OS_INT)
else
hregister:=rg.getregisterint(list,OS_INT);
{ load value in low register }
case l.loc of
{$ifdef cpuflags}
LOC_FLAGS :
cg.g_flags2reg(list,OS_INT,l.resflags,hregister);
{$endif cpuflags}
LOC_JUMP :
begin
cg.a_label(list,truelabel);
cg.a_load_const_reg(list,OS_INT,1,hregister);
objectlibrary.getlabel(hl);
cg.a_jmp_always(list,hl);
cg.a_label(list,falselabel);
cg.a_load_const_reg(list,OS_INT,0,hregister);
cg.a_label(list,hl);
end;
else
cg.a_load_loc_reg(list,OS_INT,l,hregister);
end;
location_reset(l,LOC_REGISTER,dst_size);
l.register:=hregister;
end
else
begin
{ transformations to 32bit or smaller }
if l.loc=LOC_REGISTER then
begin
hregister:=l.register;
end
else
begin
{ get new register }
if (l.loc=LOC_CREGISTER) and
maybeconst and
(TCGSize2Size[dst_size]=TCGSize2Size[l.size]) then
hregister:=l.register
else
hregister:=rg.getregisterint(list,OS_INT);
end;
hregister:=rg.makeregsize(hregister,dst_size);
{ load value in new register }
case l.loc of
{$ifdef cpuflags}
LOC_FLAGS :
cg.g_flags2reg(list,dst_size,l.resflags,hregister);
{$endif cpuflags}
LOC_JUMP :
begin
cg.a_label(list,truelabel);
cg.a_load_const_reg(list,dst_size,1,hregister);
objectlibrary.getlabel(hl);
cg.a_jmp_always(list,hl);
cg.a_label(list,falselabel);
cg.a_load_const_reg(list,dst_size,0,hregister);
cg.a_label(list,hl);
end;
else
begin
{ load_loc_reg can only handle size >= l.size, when the
new size is smaller then we need to adjust the size
of the orignal and maybe recalculate l.register for i386 }
if (TCGSize2Size[dst_size]<TCGSize2Size[l.size]) then
begin
if (l.loc in [LOC_REGISTER,LOC_CREGISTER]) then
l.register:=rg.makeregsize(l.register,dst_size);
{ for big endian systems, the reference's offset must }
{ be increased in this case, since they have the }
{ MSB first in memory and e.g. byte(word_var) should }
{ return the second byte in this case (JM) }
if (target_info.endian = ENDIAN_BIG) and
(l.loc in [LOC_REFERENCE,LOC_CREFERENCE]) then
inc(l.reference.offset,TCGSize2Size[l.size]-TCGSize2Size[dst_size]);
{$ifdef i386}
l.size:=dst_size;
{$endif i386}
end;
cg.a_load_loc_reg(list,dst_size,l,hregister);
{$ifndef i386}
if (TCGSize2Size[dst_size]<TCGSize2Size[l.size]) then
l.size:=dst_size;
{$endif not i386}
end;
end;
location_reset(l,LOC_REGISTER,dst_size);
l.register:=hregister;
end;
end;
{$endif cpu64bit}
{$ifdef newra}
procedure location_force_reg(list: TAAsmoutput;var l:tlocation;dst_size:TCGSize;maybeconst:boolean);
var oldloc:Tlocation;
begin
oldloc:=l;
location_force(list, l, dst_size, maybeconst);
{ release previous location before demanding a new register }
if (oldloc.loc in [LOC_REFERENCE,LOC_CREFERENCE]) then
begin
location_freetemp(list,oldloc);
location_release(list,oldloc);
end;
end;
{$else}
procedure location_force_reg(list: TAAsmoutput;var l:tlocation;dst_size:TCGSize;maybeconst:boolean);
begin
{ release previous location before demanding a new register }
if (l.loc in [LOC_REFERENCE,LOC_CREFERENCE]) then
begin
location_freetemp(list,l);
location_release(list,l);
end;
location_force(list, l, dst_size, maybeconst)
end;
{$endif}
procedure location_force_fpureg(list: TAAsmoutput;var l: tlocation;maybeconst:boolean);
var
reg : tregister;
begin
if (l.loc<>LOC_FPUREGISTER) and
((l.loc<>LOC_CFPUREGISTER) or (not maybeconst)) then
begin
reg:=rg.getregisterfpu(list,l.size);
cg.a_loadfpu_loc_reg(list,l,reg);
location_freetemp(list,l);
location_release(list,l);
location_reset(l,LOC_FPUREGISTER,l.size);
l.register:=reg;
end;
end;
procedure location_force_mem(list: TAAsmoutput;var l:tlocation);
var
r : treference;
begin
case l.loc of
LOC_FPUREGISTER,
LOC_CFPUREGISTER :
begin
tg.GetTemp(list,TCGSize2Size[l.size],tt_normal,r);
cg.a_loadfpu_reg_ref(list,l.size,l.register,r);
location_release(list,l);
location_reset(l,LOC_REFERENCE,l.size);
l.reference:=r;
end;
LOC_CONSTANT,
LOC_REGISTER,
LOC_CREGISTER :
begin
tg.GetTemp(list,TCGSize2Size[l.size],tt_normal,r);
if l.size in [OS_64,OS_S64] then
cg64.a_load64_loc_ref(list,l,r)
else
cg.a_load_loc_ref(list,l.size,l,r);
location_release(list,l);
location_reset(l,LOC_REFERENCE,l.size);
l.reference:=r;
end;
LOC_CREFERENCE,
LOC_REFERENCE : ;
else
internalerror(200203219);
end;
end;
{*****************************************************************************
Maybe_Save
*****************************************************************************}
{$ifndef newra}
procedure maybe_save(list:taasmoutput;needed:integer;var l:tlocation;var s:tmaybesave);
begin
s.saved:=false;
if l.loc=LOC_CREGISTER then
begin
s.saved:=true;
exit;
end;
if needed>rg.countunusedregsint then
begin
case l.loc of
LOC_REGISTER :
begin
{$ifndef cpu64bit}
if l.size in [OS_64,OS_S64] then
begin
tg.GetTemp(list,8,tt_normal,s.ref);
cg64.a_load64_reg_ref(list,joinreg64(l.registerlow,l.registerhigh),s.ref);
end
else
{$endif cpu64bit}
begin
tg.GetTemp(list,TCGSize2Size[l.size],tt_normal,s.ref);
cg.a_load_reg_ref(list,l.size,l.size,l.register,s.ref);
end;
location_release(list,l);
s.saved:=true;
end;
LOC_REFERENCE,
LOC_CREFERENCE :
begin
if l.reference.base.enum<>R_INTREGISTER then
internalerror(200302101);
if l.reference.index.enum<>R_INTREGISTER then
internalerror(200302101);
if ((l.reference.base.number<>NR_NO) or
(l.reference.index.number<>NR_NO)) then
begin
{ load address into a single base register }
if l.reference.index.number<>NR_NO then
begin
cg.a_loadaddr_ref_reg(list,l.reference,l.reference.index);
rg.ungetregisterint(list,l.reference.base);
reference_reset_base(l.reference,l.reference.index,0);
end
else
begin
cg.a_loadaddr_ref_reg(list,l.reference,l.reference.base);
rg.ungetregisterint(list,l.reference.index);
reference_reset_base(l.reference,l.reference.base,0);
end;
{ save base register }
tg.GetTemp(list,TCGSize2Size[OS_ADDR],tt_normal,s.ref);
cg.a_load_reg_ref(list,OS_ADDR,OS_ADDR,l.reference.base,s.ref);
{ release }
location_release(list,l);
s.saved:=true;
end;
end;
end;
end;
end;
procedure maybe_restore(list:taasmoutput;var l:tlocation;const s:tmaybesave);
begin
if not s.saved then
exit;
if l.loc=LOC_CREGISTER then
begin
load_regvar_reg(list,l.register);
exit;
end;
case l.loc of
LOC_REGISTER :
begin
{$ifndef cpu64bit}
if l.size in [OS_64,OS_S64] then
begin
l.registerlow:=rg.getregisterint(list,OS_INT);
l.registerhigh:=rg.getregisterint(list,OS_INT);
cg64.a_load64_ref_reg(list,s.ref,joinreg64(l.registerlow,l.registerhigh));
end
else
{$endif cpu64bit}
begin
l.register:=rg.getregisterint(list,OS_INT);
cg.a_load_ref_reg(list,OS_INT,OS_INT,s.ref,l.register);
end;
end;
LOC_CREFERENCE,
LOC_REFERENCE :
begin
reference_reset(l.reference);
l.reference.base:=rg.getaddressregister(list);
cg.a_load_ref_reg(list,OS_ADDR,OS_ADDR,s.ref,l.reference.base);
end;
end;
tg.ungetiftemp(list,s.ref);
end;
{$endif newra}
function maybe_pushfpu(list:taasmoutput;needed : byte;var l:tlocation) : boolean;
begin
if (needed>=maxfpuregs) and
(l.loc = LOC_FPUREGISTER) then
begin
location_force_mem(list,l);
maybe_pushfpu:=true;
end
else
maybe_pushfpu:=false;
end;
{*****************************************************************************
Push Value Para
*****************************************************************************}
procedure push_value_para(list:taasmoutput;p:tnode;calloption:tproccalloption;
para_offset:longint;alignment : longint;
const locpara : tparalocation);
var
tempreference : treference;
href : treference;
hreg : tregister;
sizetopush,
size : longint;
cgsize : tcgsize;
begin
{ we've nothing to push when the size of the parameter is 0 }
if p.resulttype.def.size=0 then
exit;
{ Move flags and jump in register to make it less complex }
if p.location.loc in [LOC_FLAGS,LOC_JUMP] then
location_force_reg(list,p.location,def_cgsize(p.resulttype.def),false);
{ Handle Floating point types differently }
if p.resulttype.def.deftype=floatdef then
begin
case p.location.loc of
LOC_FPUREGISTER,
LOC_CFPUREGISTER:
begin
{$ifdef i386}
size:=align(tfloatdef(p.resulttype.def).size,alignment);
inc(pushedparasize,size);
if calloption<>pocall_inline then
cg.g_stackpointer_alloc(list,size);
{$ifdef GDB}
if (cs_debuginfo in aktmoduleswitches) and
(list.first=list.last) then
list.concat(Tai_force_line.Create);
{$endif GDB}
{ this is the easiest case for inlined !! }
hreg.enum:=R_INTREGISTER;
hreg.number:=NR_STACK_POINTER_REG;
if calloption=pocall_inline then
reference_reset_base(href,current_procinfo.framepointer,para_offset-pushedparasize)
else
reference_reset_base(href,hreg,0);
cg.a_loadfpu_reg_ref(list,
def_cgsize(p.resulttype.def),p.location.register,href);
{$else i386}
cg.a_paramfpu_reg(list,def_cgsize(p.resulttype.def),p.location.register,locpara);
{$endif i386}
end;
LOC_REFERENCE,
LOC_CREFERENCE :
begin
if locpara.loc in [LOC_FPUREGISTER,LOC_CFPUREGISTER] then
cg.a_paramfpu_ref(list,def_cgsize(p.resulttype.def),p.location.reference,locpara)
else
begin
sizetopush:=align(p.resulttype.def.size,alignment);
tempreference:=p.location.reference;
inc(tempreference.offset,sizetopush);
while (sizetopush>0) do
begin
if sizetopush>=4 then
begin
cgsize:=OS_32;
inc(pushedparasize,4);
dec(tempreference.offset,4);
dec(sizetopush,4);
end
else
begin
cgsize:=OS_16;
inc(pushedparasize,2);
dec(tempreference.offset,2);
dec(sizetopush,2);
end;
if calloption=pocall_inline then
begin
reference_reset_base(href,current_procinfo.framepointer,para_offset-pushedparasize);
cg.a_load_ref_ref(list,cgsize,cgsize,tempreference,href);
end
else
cg.a_param_ref(list,cgsize,tempreference,locpara);
end;
end;
end;
else
internalerror(200204243);
end;
location_release(list,p.location);
end
else
begin
{ copy the value on the stack or use normal parameter push? }
if paramanager.copy_value_on_stack(p.resulttype.def,calloption) then
begin
{$ifdef i386}
if not (p.location.loc in [LOC_REFERENCE,LOC_CREFERENCE]) then
internalerror(200204241);
{ push on stack }
size:=align(p.resulttype.def.size,alignment);
inc(pushedparasize,size);
cg.g_stackpointer_alloc(list,size);
hreg.enum:=R_INTREGISTER;
hreg.number:=NR_STACK_POINTER_REG;
reference_reset_base(href,hreg,0);
cg.g_concatcopy(list,p.location.reference,href,size,false,false);
{$else i386}
cg.a_param_copy_ref(list,p.resulttype.def.size,p.location.reference,locpara);
{$endif i386}
end
else
begin
case p.location.loc of
LOC_CONSTANT,
LOC_REGISTER,
LOC_CREGISTER,
LOC_REFERENCE,
LOC_CREFERENCE :
begin
cgsize:=def_cgsize(p.resulttype.def);
if cgsize in [OS_64,OS_S64] then
begin
inc(pushedparasize,8);
if calloption=pocall_inline then
begin
reference_reset_base(href,current_procinfo.framepointer,para_offset-pushedparasize);
if p.location.loc in [LOC_REFERENCE,LOC_CREFERENCE] then
begin
size:=align(p.resulttype.def.size,alignment);
cg.g_concatcopy(list,p.location.reference,href,size,false,false)
end
else
cg64.a_load64_loc_ref(list,p.location,href);
end
else
cg64.a_param64_loc(list,p.location,locpara);
end
else
begin
inc(pushedparasize,alignment);
if calloption=pocall_inline then
begin
reference_reset_base(href,current_procinfo.framepointer,para_offset-pushedparasize);
if p.location.loc in [LOC_REFERENCE,LOC_CREFERENCE] then
begin
size:=align(p.resulttype.def.size,alignment);
cg.g_concatcopy(list,p.location.reference,href,size,false,false)
end
else
cg.a_load_loc_ref(list,p.location.size,p.location,href);
end
else
cg.a_param_loc(list,p.location,locpara);
end;
location_release(list,p.location);
end;
{$ifdef SUPPORT_MMX}
LOC_MMXREGISTER,
LOC_CMMXREGISTER:
begin
inc(pushedparasize,8);
if calloption=pocall_inline then
begin
reference_reset_base(href,current_procinfo.framepointer,para_offset-pushedparasize);
cg.a_loadmm_reg_ref(list,p.location.register,href);
end
else
cg.a_parammm_reg(list,p.location.register);
end;
{$endif SUPPORT_MMX}
else
internalerror(200204241);
end;
end;
end;
end;
{****************************************************************************
Entry/Exit Code
****************************************************************************}
procedure copyvalueparas(p : tnamedindexitem;arg:pointer);
var
href1,href2 : treference;
list : taasmoutput;
loadref: boolean;
begin
list:=taasmoutput(arg);
if (tsym(p).typ=varsym) and
(tvarsym(p).varspez=vs_value) and
(paramanager.push_addr_param(tvarsym(p).vartype.def,current_procinfo.procdef.proccalloption)) then
begin
loadref := tvarsym(p).reg.enum = R_NO;
if (loadref) then
reference_reset_base(href1,current_procinfo.framepointer,tvarsym(p).adjusted_address)
else
reference_reset_base(href1,tvarsym(p).reg,0);
if is_open_array(tvarsym(p).vartype.def) or
is_array_of_const(tvarsym(p).vartype.def) then
if loadref then
cg.g_copyvaluepara_openarray(list,href1,tarraydef(tvarsym(p).vartype.def).elesize)
else
internalerror(2003053101)
else
begin
reference_reset_base(href2,current_procinfo.framepointer,tvarsym(p).localvarsym.adjusted_address);
if is_shortstring(tvarsym(p).vartype.def) then
cg.g_copyshortstring(list,href1,href2,tstringdef(tvarsym(p).vartype.def).len,false,loadref)
else
cg.g_concatcopy(list,href1,href2,tvarsym(p).vartype.def.size,true,loadref);
end;
end;
end;
{ generates the code for initialisation of local data }
procedure initialize_data(p : tnamedindexitem;arg:pointer);
var
href : treference;
list : taasmoutput;
begin
list:=taasmoutput(arg);
if (tsym(p).typ=varsym) and
not(vo_is_local_copy in tvarsym(p).varoptions) and
assigned(tvarsym(p).vartype.def) and
not(is_class(tvarsym(p).vartype.def)) and
tvarsym(p).vartype.def.needs_inittable then
begin
if (cs_implicit_exceptions in aktmoduleswitches) then
include(current_procinfo.flags,pi_needs_implicit_finally);
if tsym(p).owner.symtabletype in [localsymtable,inlinelocalsymtable] then
reference_reset_base(href,current_procinfo.framepointer,tvarsym(p).adjusted_address)
else
reference_reset_symbol(href,objectlibrary.newasmsymboldata(tvarsym(p).mangledname),0);
cg.g_initialize(list,tvarsym(p).vartype.def,href,false);
end;
end;
{ generates the code for finalisation of local data }
procedure finalize_data(p : tnamedindexitem;arg:pointer);
var
href : treference;
list : taasmoutput;
begin
list:=taasmoutput(arg);
case tsym(p).typ of
varsym :
begin
if not(vo_is_local_copy in tvarsym(p).varoptions) and
not(vo_is_funcret in tvarsym(p).varoptions) and
assigned(tvarsym(p).vartype.def) and
not(is_class(tvarsym(p).vartype.def)) and
tvarsym(p).vartype.def.needs_inittable then
begin
if tsym(p).owner.symtabletype in [localsymtable,inlinelocalsymtable] then
reference_reset_base(href,current_procinfo.framepointer,tvarsym(p).adjusted_address)
else
reference_reset_symbol(href,objectlibrary.newasmsymboldata(tvarsym(p).mangledname),0);
cg.g_finalize(list,tvarsym(p).vartype.def,href,false);
end;
end;
typedconstsym :
begin
if ttypedconstsym(p).is_writable and
ttypedconstsym(p).typedconsttype.def.needs_inittable then
begin
reference_reset_symbol(href,objectlibrary.newasmsymboldata(ttypedconstsym(p).mangledname),0);
cg.g_finalize(list,ttypedconstsym(p).typedconsttype.def,href,false);
end;
end;
end;
end;
{ generates the code for incrementing the reference count of parameters and
initialize out parameters }
procedure init_paras(p : tnamedindexitem;arg:pointer);
var
href : treference;
tmpreg : tregister;
list : taasmoutput;
begin
list:=taasmoutput(arg);
if (tsym(p).typ=varsym) and
not is_class(tvarsym(p).vartype.def) and
tvarsym(p).vartype.def.needs_inittable then
begin
case tvarsym(p).varspez of
vs_value :
begin
if (cs_implicit_exceptions in aktmoduleswitches) then
include(current_procinfo.flags,pi_needs_implicit_finally);
if assigned(tvarsym(p).localvarsym) then
reference_reset_base(href,current_procinfo.framepointer,tvarsym(p).localvarsym.adjusted_address)
else
reference_reset_base(href,current_procinfo.framepointer,tvarsym(p).adjusted_address);
cg.g_incrrefcount(list,tvarsym(p).vartype.def,href,is_open_array(tvarsym(p).vartype.def));
end;
vs_out :
begin
reference_reset_base(href,current_procinfo.framepointer,tvarsym(p).adjusted_address);
{$ifdef newra}
tmpreg:=rg.getaddressregister(list);
{$else}
tmpreg:=cg.get_scratch_reg_address(list);
{$endif}
cg.a_load_ref_reg(list,OS_ADDR,OS_ADDR,href,tmpreg);
reference_reset_base(href,tmpreg,0);
cg.g_initialize(list,tvarsym(p).vartype.def,href,false);
{$ifdef newra}
rg.ungetregisterint(list,tmpreg);
{$else}
cg.free_scratch_reg(list,tmpreg);
{$endif newra}
end;
end;
end;
end;
{ generates the code for decrementing the reference count of parameters }
procedure final_paras(p : tnamedindexitem;arg:pointer);
var
href : treference;
list : taasmoutput;
begin
list:=taasmoutput(arg);
if (tsym(p).typ=varsym) and
not is_class(tvarsym(p).vartype.def) and
tvarsym(p).vartype.def.needs_inittable then
begin
if (tvarsym(p).varspez=vs_value) then
begin
if assigned(tvarsym(p).localvarsym) then
reference_reset_base(href,current_procinfo.framepointer,tvarsym(p).localvarsym.adjusted_address)
else
reference_reset_base(href,current_procinfo.framepointer,tvarsym(p).adjusted_address);
cg.g_decrrefcount(list,tvarsym(p).vartype.def,href,is_open_array(tvarsym(p).vartype.def));
end;
end;
end;
{ Initialize temp ansi/widestrings,interfaces }
procedure inittempvariables(list:taasmoutput);
var
hp : ptemprecord;
href : treference;
begin
hp:=tg.templist;
while assigned(hp) do
begin
if hp^.temptype in [tt_ansistring,tt_freeansistring,
tt_widestring,tt_freewidestring,
tt_interfacecom,tt_freeinterfacecom] then
begin
if (cs_implicit_exceptions in aktmoduleswitches) then
include(current_procinfo.flags,pi_needs_implicit_finally);
reference_reset_base(href,current_procinfo.framepointer,hp^.pos);
cg.a_load_const_ref(list,OS_ADDR,0,href);
end;
hp:=hp^.next;
end;
end;
procedure finalizetempvariables(list:taasmoutput);
var
hp : ptemprecord;
href : treference;
begin
hp:=tg.templist;
while assigned(hp) do
begin
case hp^.temptype of
tt_ansistring,
tt_freeansistring :
begin
reference_reset_base(href,current_procinfo.framepointer,hp^.pos);
cg.a_paramaddr_ref(list,href,paramanager.getintparaloc(1));
cg.a_call_name(list,'FPC_ANSISTR_DECR_REF');
end;
tt_widestring,
tt_freewidestring :
begin
reference_reset_base(href,current_procinfo.framepointer,hp^.pos);
cg.a_paramaddr_ref(list,href,paramanager.getintparaloc(1));
cg.a_call_name(list,'FPC_WIDESTR_DECR_REF');
end;
tt_interfacecom :
begin
reference_reset_base(href,current_procinfo.framepointer,hp^.pos);
cg.a_paramaddr_ref(list,href,paramanager.getintparaloc(1));
cg.a_call_name(list,'FPC_INTF_DECR_REF');
end;
end;
hp:=hp^.next;
end;
end;
procedure initretvalue(list:taasmoutput);
var
href : treference;
begin
if not is_void(current_procdef.rettype.def) then
begin
{ initialize return value }
if (current_procdef.rettype.def.needs_inittable) then
begin
{$ifdef powerpc}
if (po_assembler in current_procdef.procoptions) then
internalerror(200304161);
{$endif powerpc}
if (cs_implicit_exceptions in aktmoduleswitches) then
include(current_procinfo.flags,pi_needs_implicit_finally);
reference_reset_base(href,current_procinfo.framepointer,tvarsym(current_procdef.funcretsym).adjusted_address);
cg.g_initialize(list,current_procdef.rettype.def,href,paramanager.ret_in_param(current_procdef.rettype.def,current_procdef.proccalloption));
{ load the pointer to the initialized retvalue in te register }
if (tvarsym(current_procdef.funcretsym).reg.enum <> R_NO) then
cg.a_load_ref_reg(list,OS_ADDR,def_cgsize(current_procdef.rettype.def),href,tvarsym(current_procdef.funcretsym).reg);
end;
end;
end;
procedure load_return_value(list:TAAsmoutput; var uses_acc,uses_acchi,uses_fpu : boolean);
var
ressym: tvarsym;
resloc: tlocation;
hreg,r,r2 : tregister;
begin
if not is_void(current_procdef.rettype.def) then
begin
ressym := tvarsym(current_procdef.funcretsym);
if ressym.reg.enum <> R_NO then
begin
if paramanager.ret_in_param(current_procdef.rettype.def,current_procdef.proccalloption) then
location_reset(resloc,LOC_CREGISTER,OS_ADDR)
else
if ressym.vartype.def.deftype = floatdef then
location_reset(resloc,LOC_CFPUREGISTER,def_cgsize(current_procdef.rettype.def))
else
location_reset(resloc,LOC_CREGISTER,def_cgsize(current_procdef.rettype.def));
resloc.register := ressym.reg;
end
else
begin
location_reset(resloc,LOC_REFERENCE,def_cgsize(current_procdef.rettype.def));
reference_reset_base(resloc.reference,current_procinfo.framepointer,tvarsym(current_procdef.funcretsym).adjusted_address);
end;
{ Here, we return the function result. In most architectures, the value is
passed into the FUNCTION_RETURN_REG, but in a windowed architecure like sparc a
function returns in a register and the caller receives it in an other one }
case current_procdef.rettype.def.deftype of
orddef,
enumdef :
begin
uses_acc:=true;
{$ifndef cpu64bit}
if resloc.size in [OS_64,OS_S64] then
begin
uses_acchi:=true;
r.enum:=R_INTREGISTER;
r.number:=NR_FUNCTION_RETURN64_LOW_REG;
cg.a_reg_alloc(list,r);
r2.enum:=R_INTREGISTER;
r2.number:=NR_FUNCTION_RETURN64_HIGH_REG;
cg.a_reg_alloc(list,r2);
cg64.a_load64_loc_reg(list,resloc,joinreg64(r,r2){$ifdef newra},false{$endif});
end
else
{$endif cpu64bit}
begin
hreg.enum:=R_INTREGISTER;
hreg.number:=NR_FUNCTION_RETURN_REG;
hreg:=rg.makeregsize(hreg,resloc.size);
cg.a_load_loc_reg(list,resloc.size,resloc,hreg);
end;
end;
floatdef :
begin
uses_fpu := true;
{$ifdef cpufpemu}
if cs_fp_emulation in aktmoduleswitches then
r.enum := FUNCTION_RETURN_REG
else
{$endif cpufpemu}
r.enum:=FPU_RESULT_REG;
cg.a_loadfpu_loc_reg(list,resloc,r);
end;
else
begin
if not paramanager.ret_in_param(current_procdef.rettype.def,current_procdef.proccalloption) then
begin
uses_acc:=true;
{$ifndef cpu64bit}
{ Win32 can return records in EAX:EDX }
if resloc.size in [OS_64,OS_S64] then
begin
uses_acchi:=true;
r.enum:=R_INTREGISTER;
r.number:=NR_FUNCTION_RETURN64_LOW_REG;
cg.a_reg_alloc(list,r);
r2.enum:=R_INTREGISTER;
r2.number:=NR_FUNCTION_RETURN64_HIGH_REG;
cg.a_reg_alloc(list,r2);
cg64.a_load64_loc_reg(list,resloc,joinreg64(r,r2){$ifdef newra},false{$endif});
end
else
{$endif cpu64bit}
begin
hreg.enum:=R_INTREGISTER;
hreg.number:=(RS_FUNCTION_RETURN_REG shl 8) or cgsize2subreg(resloc.size);
cg.a_load_loc_reg(list,resloc.size,resloc,hreg);
end;
end
end;
end;
end;
end;
procedure genentrycode(list:TAAsmoutput;inlined:boolean);
var
href : treference;
hp : tparaitem;
rsp : tregister;
begin
{ the actual stack allocation code, symbol entry point and
gdb stabs information is generated AFTER the rest of this
code, since temp. allocation might occur before - carl
}
if assigned(current_procdef.parast) then
begin
if not (po_assembler in current_procdef.procoptions) then
begin
{ move register parameters which aren't regable into memory }
{ we do this before init_paras because that one calls routines which may overwrite these }
{ registers and it also expects the values to be in memory }
hp:=tparaitem(current_procdef.para.first);
while assigned(hp) do
begin
if Tvarsym(hp.parasym).reg.enum>R_INTREGISTER then
internalerror(200301081);
if (tvarsym(hp.parasym).reg.enum<>R_NO) then
case hp.paraloc.loc of
LOC_CREGISTER,
LOC_REGISTER:
if not(hp.paraloc.size in [OS_S64,OS_64]) then
cg.a_load_reg_reg(list,hp.paraloc.size,hp.paraloc.size,hp.paraloc.register,tvarsym(hp.parasym).reg)
else
internalerror(2003053011);
// cg64.a_load64_reg_reg(list,hp.paraloc.register64,tvarsym(hp.parasym).reg);
LOC_CFPUREGISTER,
LOC_FPUREGISTER:
cg.a_loadfpu_reg_reg(list,hp.paraloc.register,tvarsym(hp.parasym).reg);
LOC_REFERENCE,
LOC_CREFERENCE:
begin
reference_reset_base(href,current_procinfo.framepointer,tvarsym(hp.parasym).adjusted_address);
cg.a_load_ref_reg(list,hp.paraloc.size,hp.paraloc.size,href,tvarsym(hp.parasym).reg);
end;
else
internalerror(2003053010);
end
else if (hp.paraloc.loc in [LOC_REGISTER,LOC_FPUREGISTER,LOC_MMREGISTER,
LOC_CREGISTER,LOC_CFPUREGISTER,LOC_CMMREGISTER]) and
(tvarsym(hp.parasym).reg.enum=R_NO) then
begin
reference_reset_base(href,current_procinfo.framepointer,tvarsym(hp.parasym).adjusted_address);
case hp.paraloc.loc of
LOC_CREGISTER,
LOC_REGISTER:
if not(hp.paraloc.size in [OS_S64,OS_64]) then
cg.a_load_reg_ref(list,hp.paraloc.size,hp.paraloc.size,hp.paraloc.register,href)
else
cg64.a_load64_reg_ref(list,hp.paraloc.register64,href);
LOC_FPUREGISTER,
LOC_CFPUREGISTER:
cg.a_loadfpu_reg_ref(list,hp.paraloc.size,hp.paraloc.register,href);
else
internalerror(2002081302);
end;
end;
hp:=tparaitem(hp.next);
end;
end;
end;
{ for the save all registers we can simply use a pusha,popa which
push edi,esi,ebp,esp(ignored),ebx,edx,ecx,eax }
if (po_saveregisters in current_procdef.procoptions) then
cg.g_save_all_registers(list)
else
{ should we save edi,esi,ebx like C ? }
if (po_savestdregs in current_procdef.procoptions) then
cg.g_save_standard_registers(list,current_procdef.usedintregisters);
{ Save stackpointer value }
if not inlined and
(current_procinfo.framepointer.number<>NR_STACK_POINTER_REG) and
((po_savestdregs in current_procdef.procoptions) or
(po_saveregisters in current_procdef.procoptions)) then
begin
tg.GetTemp(list,POINTER_SIZE,tt_noreuse,current_procinfo.save_stackptr_ref);
rsp.enum:=R_INTREGISTER;
rsp.number:=NR_STACK_POINTER_REG;
cg.a_load_reg_ref(list,OS_ADDR,OS_ADDR,rsp,current_procinfo.save_stackptr_ref);
end;
{ the actual profile code can clobber some registers,
therefore if the context must be saved, do it before
the actual call to the profile code
}
if (cs_profile in aktmoduleswitches) and
not(po_assembler in current_procdef.procoptions) and
not(inlined) then
begin
{ non-win32 can call mcout even in main }
if not (target_info.system in [system_i386_win32,system_i386_wdosx]) then
cg.g_profilecode(list)
else
{ wdosx, and win32 should not call mcount before monstartup has been called }
if not (current_procdef.proctypeoption=potype_proginit) then
cg.g_profilecode(list);
end;
{ initialize return value }
initretvalue(list);
{ initialize local data like ansistrings }
case current_procdef.proctypeoption of
potype_unitinit:
begin
{ this is also used for initialization of variables in a
program which does not have a globalsymtable }
if assigned(current_module.globalsymtable) then
tsymtable(current_module.globalsymtable).foreach_static({$ifndef TP}@{$endif}initialize_data,list);
tsymtable(current_module.localsymtable).foreach_static({$ifndef TP}@{$endif}initialize_data,list);
end;
{ units have seperate code for initilization and finalization }
potype_unitfinalize: ;
{ program init/final is generated in separate procedure }
potype_proginit: ;
else
current_procdef.localst.foreach_static({$ifndef TP}@{$endif}initialize_data,list);
end;
{ initialisizes temp. ansi/wide string data }
inittempvariables(list);
{ initialize ansi/widesstring para's }
if assigned(current_procdef.parast) then
begin
current_procdef.parast.foreach_static({$ifndef TP}@{$endif}init_paras,list);
end;
{ generate copies of call by value parameters }
if not(po_assembler in current_procdef.procoptions) then
current_procdef.parast.foreach_static({$ifndef TP}@{$endif}copyvalueparas,list);
if (not inlined) then
begin
{ call startup helpers from main program }
if (current_procdef.proctypeoption=potype_proginit) then
begin
{ initialize profiling for win32 }
if (target_info.system in [system_i386_win32,system_i386_wdosx]) and
(cs_profile in aktmoduleswitches) then
begin
reference_reset_symbol(href,objectlibrary.newasmsymboldata('etext'),0);
cg.a_paramaddr_ref(list,href,paramanager.getintparaloc(2));
reference_reset_symbol(href,objectlibrary.newasmsymboldata('__image_base__'),0);
cg.a_paramaddr_ref(list,href,paramanager.getintparaloc(2));
cg.a_call_name(list,'_monstartup');
end;
{ initialize units }
cg.a_call_name(list,'FPC_INITIALIZEUNITS');
end;
{$ifdef GDB}
if (cs_debuginfo in aktmoduleswitches) then
list.concat(Tai_force_line.Create);
{$endif GDB}
end;
if inlined then
load_regvars(list,nil);
end;
procedure gen_stackalloc_code(list:Taasmoutput;stackframe:longint);
var hs:string;
begin
{************************* Stack allocation **************************}
{ and symbol entry point as well as debug information }
{ will be inserted in front of the rest of this list. }
{ Insert alignment and assembler names }
{ Align, gprof uses 16 byte granularity }
if (cs_profile in aktmoduleswitches) then
list.concat(Tai_align.create(16))
else
list.concat(Tai_align.create(aktalignment.procalign));
{$ifdef GDB}
if (cs_debuginfo in aktmoduleswitches) then
begin
if (po_public in current_procdef.procoptions) then
Tprocsym(current_procdef.procsym).is_global:=true;
current_procdef.concatstabto(list);
Tprocsym(current_procdef.procsym).isstabwritten:=true;
end;
{$endif GDB}
repeat
hs:=current_procdef.aliasnames.getfirst;
if hs='' then
break;
{$ifdef GDB}
if (cs_debuginfo in aktmoduleswitches) and
target_info.use_function_relative_addresses then
list.concat(Tai_stab_function_name.create(strpnew(hs)));
{$endif GDB}
if (cs_profile in aktmoduleswitches) or
(po_public in current_procdef.procoptions) then
list.concat(Tai_symbol.createname_global(hs,0))
else
list.concat(Tai_symbol.createname(hs,0));
until false;
stackframe:=stackframe+tg.gettempsize;
{$ifndef m68k}
{ give a warning if the limit of local variables is reached }
if stackframe>maxlocalsize then
message(cg_w_localsize_too_big);
{$endif}
{$ifndef powerpc}
{ at least for the ppc this applies always, so this code isn't usable (FK) }
{ omit stack frame ? }
if (current_procinfo.framepointer.number=NR_STACK_POINTER_REG) then
begin
CGmessage(cg_d_stackframe_omited);
if stackframe<>0 then
cg.g_stackpointer_alloc(list,stackframe);
end
else
{$endif powerpc}
begin
if (po_interrupt in current_procdef.procoptions) then
cg.g_interrupt_stackframe_entry(list);
cg.g_stackframe_entry(list,stackframe);
{Never call stack checking before the standard system unit
has been initialized.}
if (cs_check_stack in aktlocalswitches) and (current_procdef.proctypeoption<>potype_proginit) then
cg.g_stackcheck(list,stackframe);
end;
end;
procedure genexitcode(list : TAAsmoutput;inlined:boolean);
var
{$ifdef GDB}
stabsendlabel : tasmlabel;
mangled_length : longint;
p : pchar;
{$endif GDB}
okexitlabel : tasmlabel;
href : treference;
srsym : tsym;
usesacc,
usesacchi,
usesfpu : boolean;
rsp,r : Tregister;
retsize : longint;
begin
if aktexitlabel.is_used then
cg.a_label(list,aktexitlabel);
cleanup_regvars(list);
{ finalize temporary data }
finalizetempvariables(list);
{ finalize local data like ansistrings}
case current_procdef.proctypeoption of
potype_unitfinalize:
begin
{ this is also used for initialization of variables in a
program which does not have a globalsymtable }
if assigned(current_module.globalsymtable) then
tsymtable(current_module.globalsymtable).foreach_static({$ifndef TP}@{$endif}finalize_data,list);
tsymtable(current_module.localsymtable).foreach_static({$ifndef TP}@{$endif}finalize_data,list);
end;
{ units/progs have separate code for initialization and finalization }
potype_unitinit: ;
{ program init/final is generated in separate procedure }
potype_proginit: ;
else
current_procdef.localst.foreach_static({$ifndef TP}@{$endif}finalize_data,list);
end;
{ finalize paras data }
if assigned(current_procdef.parast) then
current_procdef.parast.foreach_static({$ifndef TP}@{$endif}final_paras,list);
{ call __EXIT for main program }
if (not DLLsource) and
(not inlined) and
(current_procdef.proctypeoption=potype_proginit) then
begin
cg.a_call_name(list,'FPC_DO_EXIT');
end;
{ handle return value, this is not done for assembler routines when
they didn't reference the result variable }
usesacc:=false;
usesacchi:=false;
if not(po_assembler in current_procdef.procoptions) or
(assigned(current_procdef.funcretsym) and
(tvarsym(current_procdef.funcretsym).refcount>1)) then
begin
if (current_procdef.proctypeoption=potype_constructor) then
begin
objectlibrary.getlabel(okexitlabel);
cg.a_jmp_always(list,okexitlabel);
{ Success exit }
cg.a_label(list,okexitlabel);
r.enum:=R_INTREGISTER;
r.number:=NR_FUNCTION_RETURN_REG;
cg.a_reg_alloc(list,r);
{ return the self pointer }
srsym:=tvarsym(current_procdef.parast.search('self'));
if not assigned(srsym) then
internalerror(200305058);
reference_reset_base(href,current_procinfo.framepointer,tvarsym(srsym).adjusted_address);
cg.a_load_ref_reg(list,OS_ADDR,OS_ADDR,href,r);
cg.a_reg_dealloc(list,r);
usesacc:=true;
end
else
load_return_value(list,usesacc,usesacchi,usesfpu)
end;
{$ifdef GDB}
if ((cs_debuginfo in aktmoduleswitches) and not inlined) then
begin
objectlibrary.getlabel(stabsendlabel);
cg.a_label(list,stabsendlabel);
end;
{$endif GDB}
{ Restore stackpointer if it was saved }
if not inlined and
(current_procinfo.framepointer.number<>NR_STACK_POINTER_REG) and
((po_savestdregs in current_procdef.procoptions) or
(po_saveregisters in current_procdef.procoptions)) then
begin
rsp.enum:=R_INTREGISTER;
rsp.number:=NR_STACK_POINTER_REG;
cg.a_load_ref_reg(list,OS_ADDR,OS_ADDR,current_procinfo.save_stackptr_ref,rsp);
tg.UngetTemp(list,current_procinfo.save_stackptr_ref);
end;
{ for the save all registers we can simply use a pusha,popa which
push edi,esi,ebp,esp(ignored),ebx,edx,ecx,eax }
if (po_saveregisters in current_procdef.procoptions) then
cg.g_restore_all_registers(list,usesacc,usesacchi)
else
{ should we restore edi ? }
if (po_savestdregs in current_procdef.procoptions) then
cg.g_restore_standard_registers(list,current_procdef.usedintregisters);
{$ifndef powerpc}
{ remove stackframe }
if not inlined then
begin
if (current_procinfo.framepointer.number=NR_STACK_POINTER_REG) then
begin
if (tg.gettempsize<>0) then
cg.a_op_const_reg(list,OP_ADD,OS_32,tg.gettempsize,current_procinfo.framepointer);
end
else
cg.g_restore_frame_pointer(list);
end;
{$endif}
{ at last, the return is generated }
if not inlined then
begin
if (po_interrupt in current_procdef.procoptions) then
cg.g_interrupt_stackframe_exit(list,usesacc,usesacchi)
else
begin
if (po_clearstack in current_procdef.procoptions) then
begin
retsize:=0;
if paramanager.ret_in_param(current_procdef.rettype.def,current_procdef.proccalloption) then
inc(retsize,POINTER_SIZE);
end
else
begin
retsize:=current_procdef.parast.datasize;
if current_procdef.parast.address_fixup>target_info.first_parm_offset then
inc(retsize,current_procdef.parast.address_fixup-target_info.first_parm_offset);
end;
cg.g_return_from_proc(list,retsize);
end;
end;
if not inlined then
list.concat(Tai_symbol_end.Createname(current_procdef.mangledname));
{$ifdef GDB}
if (cs_debuginfo in aktmoduleswitches) and not inlined then
begin
{ define calling EBP as pseudo local var PM }
{ this enables test if the function is a local one !! }
if assigned(current_procinfo.parent) and
(current_procdef.parast.symtablelevel>normal_function_level) then
list.concat(Tai_stabs.Create(strpnew(
'"parent_ebp:'+tstoreddef(voidpointertype.def).numberstring+'",'+
tostr(N_LSYM)+',0,0,'+tostr(current_procinfo.framepointer_offset))));
if (not is_void(current_procdef.rettype.def)) then
begin
if paramanager.ret_in_param(current_procdef.rettype.def,current_procdef.proccalloption) then
list.concat(Tai_stabs.Create(strpnew(
'"'+current_procdef.procsym.name+':X*'+tstoreddef(current_procdef.rettype.def).numberstring+'",'+
tostr(N_tsym)+',0,0,'+tostr(tvarsym(current_procdef.funcretsym).adjusted_address))))
else
list.concat(Tai_stabs.Create(strpnew(
'"'+current_procdef.procsym.name+':X'+tstoreddef(current_procdef.rettype.def).numberstring+'",'+
tostr(N_tsym)+',0,0,'+tostr(tvarsym(current_procdef.funcretsym).adjusted_address))));
if (m_result in aktmodeswitches) then
if paramanager.ret_in_param(current_procdef.rettype.def,current_procdef.proccalloption) then
list.concat(Tai_stabs.Create(strpnew(
'"RESULT:X*'+tstoreddef(current_procdef.rettype.def).numberstring+'",'+
tostr(N_tsym)+',0,0,'+tostr(tvarsym(current_procdef.funcretsym).adjusted_address))))
else
list.concat(Tai_stabs.Create(strpnew(
'"RESULT:X'+tstoreddef(current_procdef.rettype.def).numberstring+'",'+
tostr(N_tsym)+',0,0,'+tostr(tvarsym(current_procdef.funcretsym).adjusted_address))));
end;
mangled_length:=length(current_procdef.mangledname);
getmem(p,2*mangled_length+50);
strpcopy(p,'192,0,0,');
strpcopy(strend(p),current_procdef.mangledname);
if (target_info.use_function_relative_addresses) then
begin
strpcopy(strend(p),'-');
strpcopy(strend(p),current_procdef.mangledname);
end;
list.concat(Tai_stabn.Create(strnew(p)));
{List.concat(Tai_stabn.Create(strpnew('192,0,0,'
+current_procdef.mangledname))));
p[0]:='2';p[1]:='2';p[2]:='4';
strpcopy(strend(p),'_end');}
strpcopy(p,'224,0,0,'+stabsendlabel.name);
if (target_info.use_function_relative_addresses) then
begin
strpcopy(strend(p),'-');
strpcopy(strend(p),current_procdef.mangledname);
end;
list.concatlist(withdebuglist);
list.concat(Tai_stabn.Create(strnew(p)));
{ strpnew('224,0,0,'
+current_procdef.mangledname+'_end'))));}
freemem(p,2*mangled_length+50);
end;
{$endif GDB}
if inlined then
cleanup_regvars(list);
end;
{****************************************************************************
Inlining
****************************************************************************}
procedure load_inlined_return_value(list:TAAsmoutput);
var
ressym: tvarsym;
resloc: tlocation;
r,r2 : tregister;
begin
if not is_void(current_procdef.rettype.def) then
begin
ressym := tvarsym(current_procdef.funcretsym);
if ressym.reg.enum <> R_NO then
begin
if paramanager.ret_in_param(current_procdef.rettype.def,current_procdef.proccalloption) then
location_reset(resloc,LOC_CREGISTER,OS_ADDR)
else
if ressym.vartype.def.deftype = floatdef then
location_reset(resloc,LOC_CFPUREGISTER,def_cgsize(current_procdef.rettype.def))
else
location_reset(resloc,LOC_CREGISTER,def_cgsize(current_procdef.rettype.def));
resloc.register := ressym.reg;
end
else
begin
location_reset(resloc,LOC_CREGISTER,def_cgsize(current_procdef.rettype.def));
reference_reset_base(resloc.reference,current_procinfo.framepointer,tvarsym(current_procdef.funcretsym).adjusted_address);
end;
{ Here, we return the function result. In most architectures, the value is
passed into the FUNCTION_RETURN_REG, but in a windowed architecure like sparc a
function returns in a register and the caller receives it in an other one }
case current_procdef.rettype.def.deftype of
orddef,
enumdef :
begin
{$ifndef cpu64bit}
if resloc.size in [OS_64,OS_S64] then
begin
r:=rg.getregisterint(list,OS_INT);
r2:=rg.getregisterint(list,OS_INT);
cg64.a_load64_loc_reg(list,resloc,joinreg64(r,r2){$ifdef newra},false{$endif});
end
else
{$endif cpu64bit}
begin
r:=rg.getregisterint(list,resloc.size);
cg.a_load_loc_reg(list,resloc.size,resloc,r);
end;
end;
floatdef :
begin
{$ifdef cpufpemu}
if cs_fp_emulation in aktmoduleswitches then
r.enum := FUNCTION_RETURN_REG
else
{$endif cpufpemu}
r.enum:=FPU_RESULT_REG;
cg.a_loadfpu_loc_reg(list,resloc,r);
end;
else
begin
if not paramanager.ret_in_param(current_procdef.rettype.def,current_procdef.proccalloption) then
begin
{$ifndef cpu64bit}
{ Win32 can return records in EAX:EDX }
if resloc.size in [OS_64,OS_S64] then
begin
r:=rg.getregisterint(list,OS_INT);
r2:=rg.getregisterint(list,OS_INT);
cg64.a_load64_loc_reg(list,resloc,joinreg64(r,r2){$ifdef newra},false{$endif});
end
else
{$endif cpu64bit}
begin
r:=rg.getregisterint(list,resloc.size);
cg.a_load_loc_reg(list,resloc.size,resloc,r);
end;
end
end;
end;
end;
end;
procedure geninlineentrycode(list : TAAsmoutput;stackframe:longint);
begin
{ initialize return value }
initretvalue(list);
current_procdef.localst.foreach_static({$ifndef TP}@{$endif}initialize_data,list);
{ initialisizes temp. ansi/wide string data }
inittempvariables(list);
{ initialize ansi/widesstring para's }
if assigned(current_procdef.parast) then
current_procdef.parast.foreach_static({$ifndef TP}@{$endif}init_paras,list);
{ generate copies of call by value parameters }
if not(po_assembler in current_procdef.procoptions) then
current_procdef.parast.foreach_static({$ifndef TP}@{$endif}copyvalueparas,list);
load_regvars(list,nil);
end;
procedure geninlineexitcode(list : TAAsmoutput;inlined:boolean);
var
usesacc,
usesacchi,
usesfpu : boolean;
begin
if aktexitlabel.is_used then
cg.a_label(list,aktexitlabel);
cleanup_regvars(list);
{ finalize temporary data }
finalizetempvariables(list);
current_procdef.localst.foreach_static({$ifndef TP}@{$endif}finalize_data,list);
{ finalize paras data }
if assigned(current_procdef.parast) then
current_procdef.parast.foreach_static({$ifndef TP}@{$endif}final_paras,list);
{ handle return value, this is not done for assembler routines when
they didn't reference the result variable }
if not(po_assembler in current_procdef.procoptions) or
(assigned(current_procdef.funcretsym) and
(tvarsym(current_procdef.funcretsym).refcount>1)) then
begin
if (current_procdef.proctypeoption=potype_constructor) then
internalerror(200305263);
// load_inlined_return_value(list);
load_return_value(list,usesacc,usesacchi,usesfpu)
end;
cleanup_regvars(list);
end;
end.
{
$Log$
Revision 1.121 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 1.120 2003/06/03 15:49:49 jonas
* fixed ref/loc problems
Revision 1.119 2003/06/03 15:06:37 daniel
* fixed conflict marks
Revision 1.118 2003/06/03 13:01:59 daniel
* Register allocator finished
Revision 1.117 2003/06/02 21:42:05 jonas
* function results can now also be regvars
- removed tprocinfo.return_offset, never use it again since it's invalid
if the result is a regvar
Revision 1.116 2003/06/01 21:38:06 peter
* getregisterfpu size parameter added
* op_const_reg size parameter added
* sparc updates
Revision 1.115 2003/05/31 20:28:17 jonas
* changed copyvalueparas so it also supports register parameters
(except for copy_value_openarray, but that one is seriously broken
anyway, since it expects that the high parameter will always be in
memory right after the pointer to the array, while it could just as
will be in a register)
Revision 1.114 2003/05/31 15:05:28 peter
* FUNCTION_RESULT64_LOW/HIGH_REG added for int64 results
Revision 1.113 2003/05/31 00:48:15 jonas
* fixed my previous commit
Revision 1.112 2003/05/30 23:57:08 peter
* more sparc cleanup
* accumulator removed, splitted in function_return_reg (called) and
function_result_reg (caller)
Revision 1.111 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 1.110 2003/05/30 18:52:10 jonas
* fixed bug with intregvars
* locapara.loc can also be LOC_CFPUREGISTER -> also fixed
rcgppc.a_param_ref, which previously got bogus size values
Revision 1.109 2003/05/27 21:19:08 jonas
* fixed ppc cycle
Revision 1.108 2003/05/27 14:28:14 jonas
* patch from Peter for nested procedures
Revision 1.107 2003/05/26 21:17:17 peter
* procinlinenode removed
* aktexit2label removed, fast exit removed
+ tcallnode.inlined_pass_2 added
Revision 1.106 2003/05/24 11:59:42 jonas
* fixed integer typeconversion problems
Revision 1.105 2003/05/23 14:27:35 peter
* remove some unit dependencies
* current_procinfo changes to store more info
Revision 1.104 2003/05/15 18:58:53 peter
* removed selfpointer_offset, vmtpointer_offset
* tvarsym.adjusted_address
* address in localsymtable is now in the real direction
* removed some obsolete globals
Revision 1.103 2003/05/14 19:37:25 jonas
* patch from Peter for int64 function results
Revision 1.102 2003/05/13 19:14:41 peter
* failn removed
* inherited result code check moven to pexpr
Revision 1.101 2003/05/13 15:16:13 peter
* removed ret_in_acc, it's the reverse of ret_in_param
* fixed ret_in_param for win32 cdecl array
Revision 1.100 2003/05/12 08:08:27 jonas
* fixed several initialization and finalization related bugs (missing
tg.direction's, wrong paralocation for decreasing refcount of
everything but ansistrings)
Revision 1.99 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 1.98 2003/05/11 14:45:12 peter
* tloadnode does not support objectsymtable,withsymtable anymore
* withnode cleanup
* direct with rewritten to use temprefnode
Revision 1.97 2003/05/10 13:20:23 jonas
* moved storing of register parameters to memory even earlier in the
entry code to fix problems with constructors
Revision 1.96 2003/05/09 17:47:02 peter
* self moved to hidden parameter
* removed hdisposen,hnewn,selfn
Revision 1.95 2003/04/29 07:28:52 michael
+ Patch from peter to fix wrong pushing of ansistring function results in open array
Revision 1.94 2003/04/28 21:17:38 peter
* do not finalize function results
Revision 1.93 2003/04/27 16:30:34 jonas
* store register para's to memory before copying the valuepara's, because
that one requires them to be there already (and it calls subroutines ->
could overwrite those registers)
Revision 1.92 2003/04/27 11:21:33 peter
* aktprocdef renamed to current_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 1.91 2003/04/27 07:29:50 peter
* current_procdef cleanup, current_procdef is now always nil when parsing
a new procdef declaration
* aktprocsym removed
* lexlevel removed, use symtable.symtablelevel instead
* implicit init/final code uses the normal genentry/genexit
* funcret state checking updated for new funcret handling
Revision 1.90 2003/04/26 17:21:08 florian
* fixed passing of fpu values by fpu register
Revision 1.89 2003/04/25 20:59:33 peter
* removed funcretn,funcretsym, function result is now in varsym
and aliases for result and function name are added using absolutesym
* vs_hidden parameter for funcret passed in parameter
* vs_hidden fixes
* writenode changed to printnode and released from extdebug
* -vp option added to generate a tree.log with the nodetree
* nicer printnode for statements, callnode
Revision 1.88 2003/04/23 12:35:34 florian
* fixed several issues with powerpc
+ applied a patch from Jonas for nested function calls (PowerPC only)
* ...
Revision 1.87 2003/04/22 14:33:38 peter
* removed some notes/hints
Revision 1.86 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 1.85 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 1.84 2003/04/16 09:26:55 jonas
* assembler procedures now again get a stackframe if they have local
variables. No space is reserved for a function result however.
Also, the register parameters aren't automatically saved on the stack
anymore in assembler procedures.
Revision 1.83 2003/04/06 21:11:23 olle
* changed newasmsymbol to newasmsymboldata for data symbols
Revision 1.82 2003/03/30 20:59:07 peter
* fix classmethod from classmethod call
* move BeforeDestruction/AfterConstruction calls to
genentrycode/genexitcode instead of generating them on the fly
after a call to a constructor
Revision 1.81 2003/03/28 19:16:56 peter
* generic constructor working for i386
* remove fixed self register
* esi added as address register for i386
Revision 1.80 2003/03/17 15:52:20 peter
* fix range error
Revision 1.79 2003/03/11 21:46:24 jonas
* lots of new regallocator fixes, both in generic and ppc-specific code
(ppc compiler still can't compile the linux system unit though)
Revision 1.78 2003/02/26 21:15:43 daniel
* Fixed the optimizer
Revision 1.77 2003/02/19 22:00:14 daniel
* Code generator converted to new register notation
- Horribily outdated todo.txt removed
Revision 1.76 2003/02/15 22:17:38 carl
* bugfix of FPU emulation code
Revision 1.75 2003/01/09 22:00:53 florian
* fixed some PowerPC issues
Revision 1.74 2003/01/09 20:41:10 florian
* fixed broken PowerPC compiler
Revision 1.73 2003/01/08 18:43:56 daniel
* Tregister changed into a record
Revision 1.72 2002/12/29 23:51:43 florian
* web bug 2214 fixed: ie 10 in const array constructors
Revision 1.71 2002/12/24 15:56:50 peter
* stackpointer_alloc added for adjusting ESP. Win32 needs
this for the pageprotection
Revision 1.70 2002/12/05 14:39:21 florian
* added missing then, Carl did you really a make fullcycle :) ?
Revision 1.69 2002/12/03 22:13:39 carl
* bugfix of problems with profile code which clobbers some registers
Revision 1.68 2002/12/01 22:06:59 carl
* warning of portabilitiy problems with parasize / localsize
Revision 1.67 2002/11/30 18:44:57 carl
+ profiling support for Win32
Revision 1.66 2002/11/30 14:39:15 carl
* try to fix profiling for win32
Revision 1.65 2002/11/28 23:28:14 florian
* push_value_para didn't release floatdef locations, fixes tw2045
Revision 1.64 2002/11/27 02:33:19 peter
* copy_value_on_stack method added for cdecl record passing
Revision 1.63 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 1.62 2002/11/18 17:31:55 peter
* pass proccalloption to ret_in_xxx and push_xxx functions
Revision 1.61 2002/11/17 17:49:08 mazen
+ return_result_reg and FUNCTION_RESULT_REG are now used, in all plateforms, to pass functions result between called function and its caller. See the explanation of each one
Revision 1.60 2002/11/17 16:31:56 carl
* memory optimization (3-4%) : cleanup of tai fields,
cleanup of tdef and tsym fields.
* make it work for m68k
Revision 1.59 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 1.58 2002/11/10 19:07:45 mazen
* SPARC calling mechanism almost OK (as in GCC./mppcsparc )
Revision 1.57 2002/11/03 20:22:40 mazen
* parameter handling updated
Revision 1.56 2002/10/16 19:01:43 peter
+ $IMPLICITEXCEPTIONS switch to turn on/off generation of the
implicit exception frames for procedures with initialized variables
and for constructors. The default is on for compatibility
Revision 1.55 2002/10/14 19:42:33 peter
* only use init tables for threadvars
Revision 1.54 2002/10/06 19:41:30 peter
* Add finalization of typed consts
* Finalization of globals in the main program
Revision 1.53 2002/10/05 15:18:42 carl
* fix heap leaks
Revision 1.52 2002/09/30 07:00:46 florian
* fixes to common code to get the alpha compiler compiled applied
Revision 1.51 2002/09/22 14:02:35 carl
* stack checking cannot be called before system unit is initialized
* MC68020 define
Revision 1.50 2002/09/17 18:54:03 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 1.49 2002/09/10 21:48:30 florian
* improved handling of procedures with register calling conventions
Revision 1.48 2002/09/07 15:25:03 peter
* old logs removed and tabs fixed
Revision 1.47 2002/09/02 18:44:48 peter
* fixed (not) pushing of empty parameters
* fixed implicit initialization/finalization generation
* fixed/optimized local copy of value arguments init/final
Revision 1.46 2002/09/01 19:27:34 peter
* use index register when available for generating a reference with
only a signle register. Using the base register could possibly
destroy the framepointer
Revision 1.45 2002/09/01 18:50:20 peter
* fixed maybe_save that did not support a reference with only
a index register. It now also updates the location with the new
base register only
Revision 1.44 2002/09/01 14:42:41 peter
* removevaluepara added to fix the stackpointer so restoring of
saved registers works
Revision 1.43 2002/08/25 19:25:18 peter
* sym.insert_in_data removed
* symtable.insertvardata/insertconstdata added
* removed insert_in_data call from symtable.insert, it needs to be
called separatly. This allows to deref the address calculation
* procedures now calculate the parast addresses after the procedure
directives are parsed. This fixes the cdecl parast problem
* push_addr_param has an extra argument that specifies if cdecl is used
or not
Revision 1.42 2002/08/24 18:38:26 peter
* really use tt_noreuse for exception frame buffers
Revision 1.41 2002/08/23 16:14:49 peter
* tempgen cleanup
* tt_noreuse temp type added that will be used in genentrycode
Revision 1.40 2002/08/18 10:42:37 florian
* remaining assembler writer bugs fixed, the errors in the
system unit are inline assembler problems
Revision 1.39 2002/08/17 09:23:36 florian
* first part of procinfo rewrite
Revision 1.38 2002/08/16 14:24:57 carl
* issameref() to test if two references are the same (then emit no opcodes)
+ ret_in_reg to replace ret_in_acc
(fix some register allocation bugs at the same time)
+ save_std_register now has an extra parameter which is the
usedinproc registers
Revision 1.37 2002/08/15 15:15:55 carl
* jmpbuf size allocation for exceptions is now cpu specific (as it should)
* more generic nodes for maths
* several fixes for better m68k support
Revision 1.36 2002/08/14 19:25:09 carl
* fix Florian's last commit for m68k compilation
Revision 1.35 2002/08/13 21:40:56 florian
* more fixes for ppc calling conventions
Revision 1.34 2002/08/12 15:08:39 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 1.33 2002/08/11 14:32:27 peter
* renamed current_library to objectlibrary
Revision 1.32 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 1.31 2002/08/09 19:16:57 carl
* stack allocation is now done separately (at the end) of genentrycode
so temps. can be allocated before.
* fix generic exception handling
Revision 1.30 2002/08/06 20:55:21 florian
* first part of ppc calling conventions fix
Revision 1.29 2002/08/04 19:09:22 carl
+ added generic exception support (still does not work!)
+ more documentation
Revision 1.28 2002/07/29 21:23:42 florian
* more fixes for the ppc
+ wrappers for the tcnvnode.first_* stuff introduced
}
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