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fpc/compiler/pmodules.pas

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{
Copyright (c) 1998-2008 by Florian Klaempfl
Handles the parsing and loading of the modules (ppufiles)
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 pmodules;
{$i fpcdefs.inc}
interface
function proc_unit:boolean;
procedure proc_package;
procedure proc_program(islibrary : boolean);
implementation
uses
SysUtils,
globtype,version,systems,tokens,
cutils,cfileutl,cclasses,comphook,
globals,verbose,fmodule,finput,fppu,globstat,
symconst,symbase,symtype,symdef,symsym,symtable,symcreat,
wpoinfo,
aasmtai,aasmdata,aasmcpu,aasmbase,
cgbase,cgobj,ngenutil,
nbas,nutils,ncgutil,
link,assemble,import,export,gendef,ppu,comprsrc,dbgbase,
cresstr,procinfo,
pexports,
objcgutl,
wpobase,
scanner,pbase,pexpr,psystem,psub,pdecsub,ncgvmt,
cpuinfo;
procedure create_objectfile;
var
DLLScanner : TDLLScanner;
s : string;
KeepShared : TCmdStrList;
begin
{ try to create import entries from system dlls }
if (tf_has_dllscanner in target_info.flags) and
(not current_module.linkOtherSharedLibs.Empty) then
begin
{ Init DLLScanner }
if assigned(CDLLScanner[target_info.system]) then
DLLScanner:=CDLLScanner[target_info.system].Create
else
internalerror(200104121);
KeepShared:=TCmdStrList.Create;
{ Walk all shared libs }
While not current_module.linkOtherSharedLibs.Empty do
begin
S:=current_module.linkOtherSharedLibs.Getusemask(link_always);
if not DLLScanner.scan(s) then
KeepShared.Concat(s);
end;
DLLscanner.Free;
{ Recreate import section }
if (target_info.system in [system_i386_win32,system_i386_wdosx]) then
begin
if assigned(current_asmdata.asmlists[al_imports]) then
current_asmdata.asmlists[al_imports].clear
else
current_asmdata.asmlists[al_imports]:=TAsmList.Create;
importlib.generatelib;
end;
{ Readd the not processed files }
while not KeepShared.Empty do
begin
s:=KeepShared.GetFirst;
current_module.linkOtherSharedLibs.add(s,link_always);
end;
KeepShared.Free;
end;
{ Start and end module debuginfo, at least required for stabs
to insert n_sourcefile lines }
if (cs_debuginfo in current_settings.moduleswitches) or
(cs_use_lineinfo in current_settings.globalswitches) then
current_debuginfo.insertmoduleinfo;
{ create the .s file and assemble it }
if not(create_smartlink_library) or not(tf_no_objectfiles_when_smartlinking in target_info.flags) then
GenerateAsm(false);
{ Also create a smartlinked version ? }
if create_smartlink_library then
begin
GenerateAsm(true);
if (af_needar in target_asm.flags) then
Linker.MakeStaticLibrary;
end;
{ resource files }
CompileResourceFiles;
end;
procedure insertobjectfile;
{ Insert the used object file for this unit in the used list for this unit }
begin
current_module.linkunitofiles.add(current_module.objfilename,link_static);
current_module.flags:=current_module.flags or uf_static_linked;
if create_smartlink_library then
begin
current_module.linkunitstaticlibs.add(current_module.staticlibfilename ,link_smart);
current_module.flags:=current_module.flags or uf_smart_linked;
end;
end;
procedure create_dwarf_frame;
begin
{ Dwarf conflicts with smartlinking in separate .a files }
if create_smartlink_library then
exit;
{ Call frame information }
{ MWE: we write our own info, so dwarf asm support is not really needed }
{ if (af_supports_dwarf in target_asm.flags) and }
{ CFI is currently broken for Darwin }
if not(target_info.system in systems_darwin) and
(
(tf_needs_dwarf_cfi in target_info.flags) or
(paratargetdbg in [dbg_dwarf2, dbg_dwarf3])
) then
begin
current_asmdata.asmlists[al_dwarf_frame].Free;
current_asmdata.asmlists[al_dwarf_frame] := TAsmList.create;
current_asmdata.asmcfi.generate_code(current_asmdata.asmlists[al_dwarf_frame]);
end;
end;
Function CheckResourcesUsed : boolean;
var
hp : tused_unit;
found : Boolean;
begin
CheckResourcesUsed:=tf_has_winlike_resources in target_info.flags;
if not CheckResourcesUsed then exit;
hp:=tused_unit(usedunits.first);
found:=((current_module.flags and uf_has_resourcefiles)=uf_has_resourcefiles);
If not found then
While Assigned(hp) and not found do
begin
Found:=((hp.u.flags and uf_has_resourcefiles)=uf_has_resourcefiles);
hp:=tused_unit(hp.next);
end;
CheckResourcesUsed:=found;
end;
procedure AddUnit(const s:string);
var
hp : tppumodule;
unitsym : tunitsym;
begin
{ load unit }
hp:=registerunit(current_module,s,'');
hp.loadppu;
hp.adddependency(current_module);
{ add to symtable stack }
symtablestack.push(hp.globalsymtable);
if (m_mac in current_settings.modeswitches) and
assigned(hp.globalmacrosymtable) then
macrosymtablestack.push(hp.globalmacrosymtable);
{ insert unitsym }
unitsym:=cunitsym.create(s,hp);
inc(unitsym.refs);
tabstractunitsymtable(current_module.localsymtable).insertunit(unitsym);
{ add to used units }
current_module.addusedunit(hp,false,unitsym);
end;
procedure maybeloadvariantsunit;
var
hp : tmodule;
begin
{ Do we need the variants unit? Skip this
for VarUtils unit for bootstrapping }
if (current_module.flags and uf_uses_variants=0) or
(current_module.modulename^='VARUTILS') then
exit;
{ Variants unit already loaded? }
hp:=tmodule(loaded_units.first);
while assigned(hp) do
begin
if hp.modulename^='VARIANTS' then
exit;
hp:=tmodule(hp.next);
end;
{ Variants unit is not loaded yet, load it now }
Message(parser_w_implicit_uses_of_variants_unit);
AddUnit('variants');
end;
function MaybeRemoveResUnit : boolean;
var
resources_used : boolean;
hp : tmodule;
uu : tused_unit;
unitname : shortstring;
begin
{ We simply remove the unit from:
- usedunit list, so that things like init/finalization table won't
contain references to this unit
- loaded_units list, so that the unit object file doesn't get linked
with the executable. }
{ Note: on windows we always need resources! }
resources_used:=(target_info.system in systems_all_windows)
or CheckResourcesUsed;
if (not resources_used) and (tf_has_winlike_resources in target_info.flags) then
begin
{ resources aren't used, so we don't need this unit }
if target_res.id=res_ext then
unitname:='FPEXTRES'
else
unitname:='FPINTRES';
Message1(unit_u_unload_resunit,unitname);
{ find the module }
hp:=tmodule(loaded_units.first);
while assigned(hp) do
begin
if hp.is_unit and (hp.modulename^=unitname) then break;
hp:=tmodule(hp.next);
end;
if not assigned(hp) then
internalerror(200801071);
{ find its tused_unit in the global list }
uu:=tused_unit(usedunits.first);
while assigned(uu) do
begin
if uu.u=hp then break;
uu:=tused_unit(uu.next);
end;
if not assigned(uu) then
internalerror(200801072);
{ remove the tused_unit }
usedunits.Remove(uu);
uu.Free;
{ remove the module }
loaded_units.Remove(hp);
unloaded_units.Concat(hp);
end;
MaybeRemoveResUnit:=resources_used;
end;
procedure loaddefaultunits;
begin
{ we are going to rebuild the symtablestack, clear it first }
symtablestack.clear;
macrosymtablestack.clear;
{ macro symtable }
macrosymtablestack.push(initialmacrosymtable);
{ are we compiling the system unit? }
if (cs_compilesystem in current_settings.moduleswitches) then
begin
systemunit:=tglobalsymtable(current_module.localsymtable);
{ create system defines }
create_intern_types;
create_intern_symbols;
{ Set the owner of errorsym and errortype to symtable to
prevent crashes when accessing .owner }
generrorsym.owner:=systemunit;
generrordef.owner:=systemunit;
exit;
end;
{ insert the system unit, it is allways the first. Load also the
internal types from the system unit }
AddUnit('system');
systemunit:=tglobalsymtable(symtablestack.top);
load_intern_types;
{ Set the owner of errorsym and errortype to symtable to
prevent crashes when accessing .owner }
generrorsym.owner:=systemunit;
generrordef.owner:=systemunit;
{ Units only required for main module }
if not(current_module.is_unit) then
begin
{ Heaptrc unit, load heaptrace before any other units especially objpas }
if (cs_use_heaptrc in current_settings.globalswitches) then
AddUnit('heaptrc');
{ Lineinfo unit }
if (cs_use_lineinfo in current_settings.globalswitches) then begin
case paratargetdbg of
dbg_stabs:
AddUnit('lineinfo');
dbg_stabx:
AddUnit('lnfogdb');
else
AddUnit('lnfodwrf');
end;
end;
{ Valgrind requires c memory manager }
if (cs_gdb_valgrind in current_settings.globalswitches) then
AddUnit('cmem');
{$ifdef cpufpemu}
{ Floating point emulation unit?
softfpu must be in the system unit anyways (FK)
if (cs_fp_emulation in current_settings.moduleswitches) and not(target_info.system in system_wince) then
AddUnit('softfpu');
}
{$endif cpufpemu}
{ Which kind of resource support?
Note: if resources aren't used this unit will be removed later,
otherwise we need it here since it must be loaded quite early }
if (tf_has_winlike_resources in target_info.flags) then
if target_res.id=res_ext then
AddUnit('fpextres')
else
AddUnit('fpintres');
end;
{ Objpas unit? }
if m_objpas in current_settings.modeswitches then
AddUnit('objpas');
{ Macpas unit? }
if m_mac in current_settings.modeswitches then
AddUnit('macpas');
if m_iso in current_settings.modeswitches then
AddUnit('iso7185');
{ blocks support? }
if m_blocks in current_settings.modeswitches then
AddUnit('blockrtl');
{ default char=widechar? }
if m_default_unicodestring in current_settings.modeswitches then
AddUnit('uuchar');
{ Objective-C support unit? }
if (m_objectivec1 in current_settings.modeswitches) then
begin
{ interface to Objective-C run time }
AddUnit('objc');
loadobjctypes;
{ NSObject }
if not(current_module.is_unit) or
(current_module.modulename^<>'OBJCBASE') then
AddUnit('objcbase');
end;
{ Profile unit? Needed for go32v2 only }
if (cs_profile in current_settings.moduleswitches) and
(target_info.system in [system_i386_go32v2,system_i386_watcom]) then
AddUnit('profile');
if (cs_load_fpcylix_unit in current_settings.globalswitches) then
begin
AddUnit('fpcylix');
AddUnit('dynlibs');
end;
{ CPU targets with microcontroller support can add a controller specific unit }
if ControllerSupport and (target_info.system in systems_embedded) and
(current_settings.controllertype<>ct_none) and
(embedded_controllers[current_settings.controllertype].controllerunitstr<>'') then
AddUnit(embedded_controllers[current_settings.controllertype].controllerunitstr);
end;
procedure loadautounits;
var
hs,s : string;
begin
hs:=autoloadunits;
repeat
s:=GetToken(hs,',');
if s='' then
break;
AddUnit(s);
until false;
end;
procedure loadunits(preservest:tsymtable);
var
s,sorg : ansistring;
fn : string;
pu : tused_unit;
hp2 : tmodule;
unitsym : tunitsym;
filepos : tfileposinfo;
begin
consume(_USES);
repeat
s:=pattern;
sorg:=orgpattern;
filepos:=current_tokenpos;
consume(_ID);
while token=_POINT do
begin
consume(_POINT);
s:=s+'.'+pattern;
sorg:=sorg+'.'+orgpattern;
consume(_ID);
end;
{ support "<unit> in '<file>'" construct, but not for tp7 }
fn:='';
if not(m_tp7 in current_settings.modeswitches) and
try_to_consume(_OP_IN) then
fn:=FixFileName(get_stringconst);
{ Give a warning if lineinfo is loaded }
if s='LINEINFO' then
begin
Message(parser_w_no_lineinfo_use_switch);
if (paratargetdbg in [dbg_dwarf2, dbg_dwarf3]) then
s := 'LNFODWRF';
sorg := s;
end;
{ Give a warning if objpas is loaded }
if s='OBJPAS' then
Message(parser_w_no_objpas_use_mode);
{ Using the unit itself is not possible }
if (s<>current_module.modulename^) then
begin
{ check if the unit is already used }
hp2:=nil;
pu:=tused_unit(current_module.used_units.first);
while assigned(pu) do
begin
if (pu.u.modulename^=s) then
begin
hp2:=pu.u;
break;
end;
pu:=tused_unit(pu.next);
end;
if not assigned(hp2) then
hp2:=registerunit(current_module,sorg,fn)
else
Message1(sym_e_duplicate_id,s);
{ Create unitsym, we need to use the name as specified, we
can not use the modulename because that can be different
when -Un is used }
current_tokenpos:=filepos;
unitsym:=cunitsym.create(sorg,nil);
tabstractunitsymtable(current_module.localsymtable).insertunit(unitsym);
{ the current module uses the unit hp2 }
current_module.addusedunit(hp2,true,unitsym);
end
else
Message1(sym_e_duplicate_id,s);
if token=_COMMA then
begin
pattern:='';
consume(_COMMA);
end
else
break;
until false;
{ Load the units }
pu:=tused_unit(current_module.used_units.first);
while assigned(pu) do
begin
{ Only load the units that are in the current
(interface/implementation) uses clause }
if pu.in_uses and
(pu.in_interface=current_module.in_interface) then
begin
tppumodule(pu.u).loadppu;
{ is our module compiled? then we can stop }
if current_module.state=ms_compiled then
exit;
{ add this unit to the dependencies }
pu.u.adddependency(current_module);
{ save crc values }
pu.checksum:=pu.u.crc;
pu.interface_checksum:=pu.u.interface_crc;
pu.indirect_checksum:=pu.u.indirect_crc;
{ connect unitsym to the module }
pu.unitsym.module:=pu.u;
{ add to symtable stack }
if assigned(preservest) then
symtablestack.pushafter(pu.u.globalsymtable,preservest)
else
symtablestack.push(pu.u.globalsymtable);
if (m_mac in current_settings.modeswitches) and
assigned(pu.u.globalmacrosymtable) then
macrosymtablestack.push(pu.u.globalmacrosymtable);
{ check hints }
pu.check_hints;
end;
pu:=tused_unit(pu.next);
end;
end;
procedure reset_all_defs;
begin
if assigned(current_module.wpoinfo) then
current_module.wpoinfo.resetdefs;
end;
procedure free_localsymtables(st:TSymtable);
var
i : longint;
def : tstoreddef;
pd : tprocdef;
begin
for i:=0 to st.DefList.Count-1 do
begin
def:=tstoreddef(st.DefList[i]);
if def.typ=procdef then
begin
pd:=tprocdef(def);
if assigned(pd.localst) and
(pd.localst.symtabletype<>staticsymtable) and
not(po_inline in pd.procoptions) then
begin
free_localsymtables(pd.localst);
pd.localst.free;
pd.localst:=nil;
end;
end;
end;
end;
procedure setupglobalswitches;
begin
if (cs_create_pic in current_settings.moduleswitches) then
begin
def_system_macro('FPC_PIC');
def_system_macro('PIC');
end;
end;
function create_main_proc(const name:string;potype:tproctypeoption;st:TSymtable):tcgprocinfo;
var
ps : tprocsym;
pd : tprocdef;
begin
{ there should be no current_procinfo available }
if assigned(current_procinfo) then
internalerror(200304275);
{Generate a procsym for main}
ps:=cprocsym.create('$'+name);
{ main are allways used }
inc(ps.refs);
st.insert(ps);
pd:=tprocdef(cnodeutils.create_main_procdef(target_info.cprefix+name,potype,ps));
{ We don't need is a local symtable. Change it into the static
symtable }
pd.localst.free;
pd.localst:=st;
handle_calling_convention(pd);
{ set procinfo and current_procinfo.procdef }
result:=tcgprocinfo(cprocinfo.create(nil));
result.procdef:=pd;
{ main proc does always a call e.g. to init system unit }
include(result.flags,pi_do_call);
end;
procedure release_main_proc(pi:tcgprocinfo);
begin
{ remove localst as it was replaced by staticsymtable }
pi.procdef.localst:=nil;
{ remove procinfo }
current_module.procinfo:=nil;
pi.free;
pi:=nil;
end;
{ Insert _GLOBAL_OFFSET_TABLE_ symbol if system uses it }
procedure maybe_load_got;
{$if defined(i386) or defined (sparc)}
var
gotvarsym : tstaticvarsym;
{$endif i386 or sparc}
begin
{$if defined(i386) or defined(sparc)}
if (cs_create_pic in current_settings.moduleswitches) and
(tf_pic_uses_got in target_info.flags) then
begin
{ insert symbol for got access in assembler code}
gotvarsym:=cstaticvarsym.create('_GLOBAL_OFFSET_TABLE_',
vs_value,voidpointertype,[vo_is_external]);
gotvarsym.set_mangledname('_GLOBAL_OFFSET_TABLE_');
current_module.localsymtable.insert(gotvarsym);
{ avoid unnecessary warnings }
gotvarsym.varstate:=vs_read;
gotvarsym.refs:=1;
end;
{$endif i386 or sparc}
end;
function gen_implicit_initfinal(flag:word;st:TSymtable):tcgprocinfo;
begin
{ create procdef }
case flag of
uf_init :
begin
result:=create_main_proc(make_mangledname('',current_module.localsymtable,'init_implicit'),potype_unitinit,st);
result.procdef.aliasnames.insert(make_mangledname('INIT$',current_module.localsymtable,''));
end;
uf_finalize :
begin
result:=create_main_proc(make_mangledname('',current_module.localsymtable,'finalize_implicit'),potype_unitfinalize,st);
result.procdef.aliasnames.insert(make_mangledname('FINALIZE$',current_module.localsymtable,''));
if (not current_module.is_unit) then
result.procdef.aliasnames.insert('PASCALFINALIZE');
end;
else
internalerror(200304253);
end;
result.code:=cnothingnode.create;
end;
procedure copy_macro(p:TObject; arg:pointer);
begin
current_module.globalmacrosymtable.insert(tmacro(p).getcopy);
end;
function try_consume_hintdirective(var moduleopt:tmoduleoptions; var deprecatedmsg:pshortstring):boolean;
var
deprecated_seen,
last_is_deprecated:boolean;
begin
try_consume_hintdirective:=false;
deprecated_seen:=false;
repeat
last_is_deprecated:=false;
case idtoken of
_LIBRARY :
begin
include(moduleopt,mo_hint_library);
try_consume_hintdirective:=true;
end;
_DEPRECATED :
begin
{ allow deprecated only once }
if deprecated_seen then
break;
include(moduleopt,mo_hint_deprecated);
try_consume_hintdirective:=true;
last_is_deprecated:=true;
deprecated_seen:=true;
end;
_EXPERIMENTAL :
begin
include(moduleopt,mo_hint_experimental);
try_consume_hintdirective:=true;
end;
_PLATFORM :
begin
include(moduleopt,mo_hint_platform);
try_consume_hintdirective:=true;
end;
_UNIMPLEMENTED :
begin
include(moduleopt,mo_hint_unimplemented);
try_consume_hintdirective:=true;
end;
else
break;
end;
consume(Token);
{ handle deprecated message }
if ((token=_CSTRING) or (token=_CCHAR)) and last_is_deprecated then
begin
if deprecatedmsg<>nil then
internalerror(201001221);
if token=_CSTRING then
deprecatedmsg:=stringdup(cstringpattern)
else
deprecatedmsg:=stringdup(pattern);
consume(token);
include(moduleopt,mo_has_deprecated_msg);
end;
until false;
end;
{$ifdef jvm}
procedure addmoduleclass;
var
def: tobjectdef;
typesym: ttypesym;
begin
{ java_jlobject may not have been parsed yet (system unit); in any
case, we only use this to refer to the class type, so inheritance
does not matter }
def:=cobjectdef.create(odt_javaclass,'__FPC_JVM_Module_Class_Alias$',nil);
include(def.objectoptions,oo_is_external);
include(def.objectoptions,oo_is_sealed);
def.objextname:=stringdup(current_module.realmodulename^);
typesym:=ctypesym.create('__FPC_JVM_Module_Class_Alias$',def);
symtablestack.top.insert(typesym);
end;
{$endif jvm}
type
tfinishstate=record
init_procinfo:tcgprocinfo;
end;
pfinishstate=^tfinishstate;
procedure finish_unit(module:tmodule;immediate:boolean);forward;
function proc_unit:boolean;
var
main_file: tinputfile;
s1,s2 : ^string; {Saves stack space}
init_procinfo : tcgprocinfo;
unitname : ansistring;
unitname8 : string[8];
i,j : longint;
finishstate:pfinishstate;
globalstate:pglobalstate;
consume_semicolon_after_uses:boolean;
begin
result:=true;
init_procinfo:=nil;
if m_mac in current_settings.modeswitches then
current_module.mode_switch_allowed:= false;
consume(_UNIT);
if compile_level=1 then
Status.IsExe:=false;
unitname:=orgpattern;
consume(_ID);
while token=_POINT do
begin
consume(_POINT);
unitname:=unitname+'.'+orgpattern;
consume(_ID);
end;
{ create filenames and unit name }
main_file := current_scanner.inputfile;
while assigned(main_file.next) do
main_file := main_file.next;
new(s1);
s1^:=current_module.modulename^;
current_module.SetFileName(main_file.path+main_file.name,true);
current_module.SetModuleName(unitname);
{ check for system unit }
new(s2);
s2^:=upper(ChangeFileExt(ExtractFileName(main_file.name),''));
unitname8:=copy(current_module.modulename^,1,8);
if (cs_check_unit_name in current_settings.globalswitches) and
(
not(
(current_module.modulename^=s2^) or
(
(length(current_module.modulename^)>8) and
(unitname8=s2^)
)
)
or
(
(length(s1^)>8) and
(s1^<>current_module.modulename^)
)
) then
Message1(unit_e_illegal_unit_name,current_module.realmodulename^);
if (current_module.modulename^='SYSTEM') then
include(current_settings.moduleswitches,cs_compilesystem);
dispose(s2);
dispose(s1);
if (target_info.system in systems_unit_program_exports) then
exportlib.preparelib(current_module.realmodulename^);
{ parse hint directives }
try_consume_hintdirective(current_module.moduleoptions, current_module.deprecatedmsg);
consume(_SEMICOLON);
{ handle the global switches, do this before interface, because after interface has been
read, all following directives are parsed as well }
setupglobalswitches;
consume(_INTERFACE);
{ global switches are read, so further changes aren't allowed }
current_module.in_global:=false;
message1(unit_u_loading_interface_units,current_module.modulename^);
{ update status }
status.currentmodule:=current_module.realmodulename^;
{ maybe turn off m_objpas if we are compiling objpas }
if (current_module.modulename^='OBJPAS') then
exclude(current_settings.modeswitches,m_objpas);
{ maybe turn off m_mac if we are compiling macpas }
if (current_module.modulename^='MACPAS') then
exclude(current_settings.modeswitches,m_mac);
parse_only:=true;
{ generate now the global symboltable,
define first as local to overcome dependency conflicts }
current_module.localsymtable:=tglobalsymtable.create(current_module.modulename^,current_module.moduleid);
{ insert unitsym of this unit to prevent other units having
the same name }
tabstractunitsymtable(current_module.localsymtable).insertunit(cunitsym.create(current_module.realmodulename^,current_module));
{ load default units, like the system unit }
loaddefaultunits;
{ insert qualifier for the system unit (allows system.writeln) }
if not(cs_compilesystem in current_settings.moduleswitches) and
(token=_USES) then
begin
loadunits(nil);
{ has it been compiled at a higher level ?}
if current_module.state=ms_compiled then
exit;
consume_semicolon_after_uses:=true;
end
else
consume_semicolon_after_uses:=false;
{ move the global symtable from the temporary local to global }
current_module.globalsymtable:=current_module.localsymtable;
current_module.localsymtable:=nil;
{ number all units, so we know if a unit is used by this unit or
needs to be added implicitly }
current_module.updatemaps;
{ consume the semicolon after maps have been updated else conditional compiling expressions
might cause internal errors, see tw8611 }
if consume_semicolon_after_uses then
consume(_SEMICOLON);
{ create whole program optimisation information (may already be
updated in the interface, e.g., in case of classrefdef typed
constants }
current_module.wpoinfo:=tunitwpoinfo.create;
{ ... parse the declarations }
Message1(parser_u_parsing_interface,current_module.realmodulename^);
symtablestack.push(current_module.globalsymtable);
{$ifdef jvm}
{ fake classdef to represent the class corresponding to the unit }
addmoduleclass;
{$endif}
read_interface_declarations;
{ Export macros defined in the interface for macpas. The macros
are put in the globalmacrosymtable that will only be used by other
units. The current unit continues to use the localmacrosymtable }
if (m_mac in current_settings.modeswitches) then
begin
current_module.globalmacrosymtable:=tmacrosymtable.create(true);
current_module.localmacrosymtable.SymList.ForEachCall(@copy_macro,nil);
end;
{ leave when we got an error }
if (Errorcount>0) and not status.skip_error then
begin
Message1(unit_f_errors_in_unit,tostr(Errorcount));
status.skip_error:=true;
symtablestack.pop(current_module.globalsymtable);
exit;
end;
{ Our interface is compiled, generate CRC and switch to implementation }
if not(cs_compilesystem in current_settings.moduleswitches) and
(Errorcount=0) then
tppumodule(current_module).getppucrc;
current_module.in_interface:=false;
current_module.interface_compiled:=true;
{ First reload all units depending on our interface, we need to do this
in the implementation part to prevent erroneous circular references }
tppumodule(current_module).setdefgeneration;
tppumodule(current_module).reload_flagged_units;
{ Parse the implementation section }
if (m_mac in current_settings.modeswitches) and try_to_consume(_END) then
current_module.interface_only:=true
else
current_module.interface_only:=false;
parse_only:=false;
{ create static symbol table }
current_module.localsymtable:=tstaticsymtable.create(current_module.modulename^,current_module.moduleid);
{ Insert _GLOBAL_OFFSET_TABLE_ symbol if system uses it }
maybe_load_got;
if not current_module.interface_only then
begin
consume(_IMPLEMENTATION);
Message1(unit_u_loading_implementation_units,current_module.modulename^);
{ Read the implementation units }
if token=_USES then
begin
loadunits(current_module.globalsymtable);
consume(_SEMICOLON);
end;
end;
if current_module.state=ms_compiled then
begin
symtablestack.pop(current_module.globalsymtable);
exit;
end;
{ All units are read, now give them a number }
current_module.updatemaps;
{ further, changing the globalsymtable is not allowed anymore }
current_module.globalsymtable.sealed:=true;
symtablestack.push(current_module.localsymtable);
if not current_module.interface_only then
begin
Message1(parser_u_parsing_implementation,current_module.modulename^);
if current_module.in_interface then
internalerror(200212285);
{ Compile the unit }
init_procinfo:=create_main_proc(make_mangledname('',current_module.localsymtable,'init'),potype_unitinit,current_module.localsymtable);
init_procinfo.procdef.aliasnames.insert(make_mangledname('INIT$',current_module.localsymtable,''));
init_procinfo.parse_body;
{ save file pos for debuginfo }
current_module.mainfilepos:=init_procinfo.entrypos;
end;
{ remove all units that we are waiting for that are already waiting for
us => breaking up circles }
for i:=0 to current_module.waitingunits.count-1 do
for j:=current_module.waitingforunit.count-1 downto 0 do
if current_module.waitingunits[i]=current_module.waitingforunit[j] then
current_module.waitingforunit.delete(j);
{$ifdef DEBUG_UNITWAITING}
Writeln('Units waiting for ', current_module.modulename^, ': ',
current_module.waitingforunit.Count);
{$endif}
result:=current_module.waitingforunit.count=0;
{ save all information that is needed for finishing the unit }
New(finishstate);
finishstate^.init_procinfo:=init_procinfo;
current_module.finishstate:=finishstate;
if result then
finish_unit(current_module,true)
else
begin
{ save the current state, so the parsing can continue where we left
of here }
New(globalstate);
save_global_state(globalstate^,true);
current_module.globalstate:=globalstate;
end;
end;
procedure finish_unit(module:tmodule;immediate:boolean);
function is_assembler_generated:boolean;
var
hal : tasmlisttype;
begin
result:=false;
if Errorcount=0 then
begin
for hal:=low(TasmlistType) to high(TasmlistType) do
if not current_asmdata.asmlists[hal].empty then
begin
result:=true;
exit;
end;
end;
end;
procedure module_is_done;inline;
begin
dispose(pglobalstate(current_module.globalstate));
current_module.globalstate:=nil;
dispose(pfinishstate(current_module.finishstate));
current_module.finishstate:=nil;
end;
var
{$ifdef EXTDEBUG}
store_crc,
{$endif EXTDEBUG}
store_interface_crc,
store_indirect_crc: cardinal;
force_init_final : boolean;
init_procinfo,
finalize_procinfo : tcgprocinfo;
i : longint;
ag : boolean;
finishstate : tfinishstate;
globalstate : tglobalstate;
waitingmodule : tmodule;
begin
fillchar(globalstate,sizeof(tglobalstate),0);
if not immediate then
begin
{$ifdef DEBUG_UNITWAITING}
writeln('finishing waiting unit ''', module.modulename^, '''');
{$endif DEBUG_UNITWAITING}
{ restore the state when we stopped working on the unit }
save_global_state(globalstate,true);
if not assigned(module.globalstate) then
internalerror(2012091802);
restore_global_state(pglobalstate(module.globalstate)^,true);
end;
{ current_module is now module }
if not assigned(current_module.finishstate) then
internalerror(2012091801);
finishstate:=pfinishstate(current_module.finishstate)^;
finalize_procinfo:=nil;
init_procinfo:=finishstate.init_procinfo;
{ Generate specializations of objectdefs methods }
generate_specialization_procs;
{ add implementations for synthetic method declarations added by
the compiler }
add_synthetic_method_implementations(current_module.globalsymtable);
add_synthetic_method_implementations(current_module.localsymtable);
{ if the unit contains ansi/widestrings, initialization and
finalization code must be forced }
force_init_final:=tglobalsymtable(current_module.globalsymtable).needs_init_final or
tstaticsymtable(current_module.localsymtable).needs_init_final;
{ should we force unit initialization? }
{ this is a hack, but how can it be done better ? }
{ Now the sole purpose of this is to change 'init' to 'init_implicit',
is it needed at all? (Sergei) }
{ it's needed in case cnodeutils.force_init = true }
if (force_init_final or cnodeutils.force_init) and
assigned(init_procinfo) and
has_no_code(init_procinfo.code) then
begin
{ first release the not used init procinfo }
if assigned(init_procinfo) then
release_main_proc(init_procinfo);
init_procinfo:=gen_implicit_initfinal(uf_init,current_module.localsymtable);
end;
{ finalize? }
if not current_module.interface_only and (token=_FINALIZATION) then
begin
{ Compile the finalize }
finalize_procinfo:=create_main_proc(make_mangledname('',current_module.localsymtable,'finalize'),potype_unitfinalize,current_module.localsymtable);
finalize_procinfo.procdef.aliasnames.insert(make_mangledname('FINALIZE$',current_module.localsymtable,''));
finalize_procinfo.parse_body;
end
else if force_init_final or cnodeutils.force_final then
finalize_procinfo:=gen_implicit_initfinal(uf_finalize,current_module.localsymtable);
{ Now both init and finalize bodies are read and it is known
which variables are used in both init and finalize we can now
generate the code. This is required to prevent putting a variable in
a register that is also used in the finalize body (PFV) }
if assigned(init_procinfo) then
begin
if (force_init_final or cnodeutils.force_init) or
not(has_no_code(init_procinfo.code)) then
begin
init_procinfo.code:=cnodeutils.wrap_proc_body(init_procinfo.procdef,init_procinfo.code);
init_procinfo.generate_code;
current_module.flags:=current_module.flags or uf_init;
end;
init_procinfo.resetprocdef;
release_main_proc(init_procinfo);
end;
if assigned(finalize_procinfo) then
begin
if force_init_final or
cnodeutils.force_init or
not(has_no_code(finalize_procinfo.code)) then
begin
finalize_procinfo.code:=cnodeutils.wrap_proc_body(finalize_procinfo.procdef,finalize_procinfo.code);
finalize_procinfo.generate_code;
current_module.flags:=current_module.flags or uf_finalize;
end;
finalize_procinfo.resetprocdef;
release_main_proc(finalize_procinfo);
end;
symtablestack.pop(current_module.localsymtable);
symtablestack.pop(current_module.globalsymtable);
{ the last char should always be a point }
consume(_POINT);
{ reset wpo flags for all defs }
reset_all_defs;
if (Errorcount=0) then
begin
{ tests, if all (interface) forwards are resolved }
tstoredsymtable(current_module.globalsymtable).check_forwards;
{ check if all private fields are used }
tstoredsymtable(current_module.globalsymtable).allprivatesused;
{ test static symtable }
tstoredsymtable(current_module.localsymtable).allsymbolsused;
tstoredsymtable(current_module.localsymtable).allprivatesused;
tstoredsymtable(current_module.localsymtable).check_forwards;
tstoredsymtable(current_module.localsymtable).checklabels;
{ used units }
current_module.allunitsused;
end;
{ leave when we got an error }
if (Errorcount>0) and not status.skip_error then
begin
Message1(unit_f_errors_in_unit,tostr(Errorcount));
status.skip_error:=true;
module_is_done;
if not immediate then
restore_global_state(globalstate,true);
exit;
end;
{ if an Objective-C module, generate rtti and module info }
MaybeGenerateObjectiveCImageInfo(current_module.globalsymtable,current_module.localsymtable);
{ do we need to add the variants unit? }
maybeloadvariantsunit;
{ generate rtti/init tables }
write_persistent_type_info(current_module.globalsymtable,true);
write_persistent_type_info(current_module.localsymtable,false);
{ Tables }
cnodeutils.InsertThreadvars;
{ Resource strings }
GenerateResourceStrings;
{ Widestring typed constants }
cnodeutils.InsertWideInits;
{ Resourcestring references }
cnodeutils.InsertResStrInits;
{ generate debuginfo }
if (cs_debuginfo in current_settings.moduleswitches) then
current_debuginfo.inserttypeinfo;
{ generate imports }
if current_module.ImportLibraryList.Count>0 then
importlib.generatelib;
{ insert own objectfile, or say that it's in a library
(no check for an .o when loading) }
ag:=is_assembler_generated;
if ag then
insertobjectfile
else
begin
current_module.flags:=current_module.flags or uf_no_link;
current_module.flags:=current_module.flags and not (uf_has_stabs_debuginfo or uf_has_dwarf_debuginfo);
end;
if ag then
begin
{ create callframe info }
create_dwarf_frame;
{ assemble }
create_objectfile;
end;
{ Write out the ppufile after the object file has been created }
store_interface_crc:=current_module.interface_crc;
store_indirect_crc:=current_module.indirect_crc;
{$ifdef EXTDEBUG}
store_crc:=current_module.crc;
{$endif EXTDEBUG}
if (Errorcount=0) then
tppumodule(current_module).writeppu;
if not(cs_compilesystem in current_settings.moduleswitches) then
begin
if store_interface_crc<>current_module.interface_crc then
Message1(unit_u_interface_crc_changed,current_module.ppufilename);
if store_indirect_crc<>current_module.indirect_crc then
Message1(unit_u_indirect_crc_changed,current_module.ppufilename);
end;
{$ifdef EXTDEBUG}
if not(cs_compilesystem in current_settings.moduleswitches) then
if (store_crc<>current_module.crc) and simplify_ppu then
Message1(unit_u_implementation_crc_changed,current_module.ppufilename);
{$endif EXTDEBUG}
{ release local symtables that are not needed anymore }
free_localsymtables(current_module.globalsymtable);
free_localsymtables(current_module.localsymtable);
{ leave when we got an error }
if (Errorcount>0) and not status.skip_error then
begin
Message1(unit_f_errors_in_unit,tostr(Errorcount));
status.skip_error:=true;
module_is_done;
if not immediate then
restore_global_state(globalstate,true);
exit;
end;
{$ifdef debug_devirt}
{ print out all instantiated class/object types }
writeln('constructed object/class/classreftypes in ',current_module.realmodulename^);
for i := 0 to current_module.wpoinfo.createdobjtypes.count-1 do
begin
write(' ',tdef(current_module.wpoinfo.createdobjtypes[i]).GetTypeName);
case tdef(current_module.wpoinfo.createdobjtypes[i]).typ of
objectdef:
case tobjectdef(current_module.wpoinfo.createdobjtypes[i]).objecttype of
odt_object:
writeln(' (object)');
odt_class:
writeln(' (class)');
else
internalerror(2008101103);
end;
else
internalerror(2008101104);
end;
end;
for i := 0 to current_module.wpoinfo.createdclassrefobjtypes.count-1 do
begin
write(' Class Of ',tdef(current_module.wpoinfo.createdclassrefobjtypes[i]).GetTypeName);
case tdef(current_module.wpoinfo.createdclassrefobjtypes[i]).typ of
objectdef:
case tobjectdef(current_module.wpoinfo.createdclassrefobjtypes[i]).objecttype of
odt_class:
writeln(' (classrefdef)');
else
internalerror(2008101105);
end
else
internalerror(2008101102);
end;
end;
{$endif debug_devirt}
Message1(unit_u_finished_compiling,current_module.modulename^);
module_is_done;
if not immediate then
restore_global_state(globalstate,true);
for i:=0 to module.waitingunits.count-1 do
begin
waitingmodule:=tmodule(module.waitingunits[i]);
waitingmodule.waitingforunit.remove(module);
{ only finish the module if it isn't already finished }
if (waitingmodule.waitingforunit.count=0) and
assigned(waitingmodule.finishstate) then
begin
finish_unit(waitingmodule,false);
waitingmodule.end_of_parsing;
end;
end;
end;
procedure procexport(const s : string);
var
hp : texported_item;
begin
hp:=texported_item.create;
hp.name:=stringdup(s);
hp.options:=hp.options or eo_name;
exportlib.exportprocedure(hp);
end;
procedure varexport(const s : string);
var
hp : texported_item;
begin
hp:=texported_item.create;
hp.name:=stringdup(s);
hp.options:=hp.options or eo_name;
exportlib.exportvar(hp);
end;
procedure insert_export(sym : TObject;arg:pointer);
var
i : longint;
item : TCmdStrListItem;
begin
case TSym(sym).typ of
{ ignore: }
unitsym,
syssym,
constsym,
enumsym,
typesym:
;
procsym:
begin
for i:=0 to tprocsym(sym).ProcdefList.Count-1 do
begin
if not(tprocdef(tprocsym(sym).ProcdefList[i]).proccalloption in [pocall_internproc]) and
((tprocdef(tprocsym(sym).ProcdefList[i]).procoptions*[po_external])=[]) and
((tsymtable(arg).symtabletype=globalsymtable) or
((tsymtable(arg).symtabletype=staticsymtable) and (po_public in tprocdef(tprocsym(sym).ProcdefList[i]).procoptions))
) then
begin
procexport(tprocdef(tprocsym(sym).ProcdefList[i]).mangledname);
{ walk through all aliases }
item:=TCmdStrListItem(tprocdef(tprocsym(sym).ProcdefList[i]).aliasnames.first);
while assigned(item) do
begin
{ avoid duplicate entries, sometimes aliasnames contains the mangledname }
if item.str<>tprocdef(tprocsym(sym).ProcdefList[i]).mangledname then
procexport(item.str);
item:=TCmdStrListItem(item.next);
end;
end;
end;
end;
staticvarsym:
begin
varexport(tsym(sym).mangledname);
end;
else
begin
writeln('unknown: ',ord(TSym(sym).typ));
end;
end;
end;
Function RewritePPU(const PPUFn,PPLFn:String):Boolean;
Var
MakeStatic : Boolean;
Var
buffer : array[0..$1fff] of byte;
inppu,
outppu : tppufile;
b,
untilb : byte;
l,m : longint;
f : file;
ext,
s : string;
ppuversion : dword;
begin
Result:=false;
MakeStatic:=False;
inppu:=tppufile.create(PPUFn);
if not inppu.openfile then
begin
inppu.free;
Comment(V_Error,'Could not open : '+PPUFn);
Exit;
end;
{ Check the ppufile }
if not inppu.CheckPPUId then
begin
inppu.free;
Comment(V_Error,'Not a PPU File : '+PPUFn);
Exit;
end;
ppuversion:=inppu.GetPPUVersion;
if ppuversion<CurrentPPUVersion then
begin
inppu.free;
Comment(V_Error,'Wrong PPU Version '+tostr(ppuversion)+' in '+PPUFn);
Exit;
end;
{ No .o file generated for this ppu, just skip }
if (inppu.header.flags and uf_no_link)<>0 then
begin
inppu.free;
Result:=true;
Exit;
end;
{ Already a lib? }
if (inppu.header.flags and uf_in_library)<>0 then
begin
inppu.free;
Comment(V_Error,'PPU is already in a library : '+PPUFn);
Exit;
end;
{ We need a static linked unit }
if (inppu.header.flags and uf_static_linked)=0 then
begin
inppu.free;
Comment(V_Error,'PPU is not static linked : '+PPUFn);
Exit;
end;
{ Check if shared is allowed }
if tsystem(inppu.header.target) in [system_i386_go32v2] then
begin
Comment(V_Error,'Shared library not supported for ppu target, switching to static library');
MakeStatic:=true;
end;
{ Create the new ppu }
if PPUFn=PPLFn then
outppu:=tppufile.create('ppumove.$$$')
else
outppu:=tppufile.create(PPLFn);
outppu.createfile;
{ Create new header, with the new flags }
outppu.header:=inppu.header;
outppu.header.flags:=outppu.header.flags or uf_in_library;
if MakeStatic then
outppu.header.flags:=outppu.header.flags or uf_static_linked
else
outppu.header.flags:=outppu.header.flags or uf_shared_linked;
{ read until the object files are found }
untilb:=iblinkunitofiles;
repeat
b:=inppu.readentry;
if b in [ibendinterface,ibend] then
begin
inppu.free;
outppu.free;
Comment(V_Error,'No files to be linked found : '+PPUFn);
Exit;
end;
if b<>untilb then
begin
repeat
inppu.getdatabuf(buffer,sizeof(buffer),l);
outppu.putdata(buffer,l);
until l<sizeof(buffer);
outppu.writeentry(b);
end;
until (b=untilb);
{ we have now reached the section for the files which need to be added,
now add them to the list }
case b of
iblinkunitofiles :
begin
{ add all o files, and save the entry when not creating a static
library to keep staticlinking possible }
while not inppu.endofentry do
begin
s:=inppu.getstring;
m:=inppu.getlongint;
if not MakeStatic then
begin
outppu.putstring(s);
outppu.putlongint(m);
end;
current_module.linkotherofiles.add(s,link_always);;
end;
if not MakeStatic then
outppu.writeentry(b);
end;
{ iblinkunitstaticlibs :
begin
AddToLinkFiles(ExtractLib(inppu.getstring));
if not inppu.endofentry then
begin
repeat
inppu.getdatabuf(buffer^,bufsize,l);
outppu.putdata(buffer^,l);
until l<bufsize;
outppu.writeentry(b);
end;
end; }
end;
{ just add a new entry with the new lib }
if MakeStatic then
begin
outppu.putstring('imp'+current_module.realmodulename^);
outppu.putlongint(link_static);
outppu.writeentry(iblinkunitstaticlibs)
end
else
begin
outppu.putstring('imp'+current_module.realmodulename^);
outppu.putlongint(link_shared);
outppu.writeentry(iblinkunitsharedlibs);
end;
{ read all entries until the end and write them also to the new ppu }
repeat
b:=inppu.readentry;
{ don't write ibend, that's written automatically }
if b<>ibend then
begin
if b=iblinkothersharedlibs then
begin
while not inppu.endofentry do
begin
s:=inppu.getstring;
m:=inppu.getlongint;
outppu.putstring(s);
outppu.putlongint(m);
{ strip lib prefix }
if copy(s,1,3)='lib' then
delete(s,1,3);
ext:=ExtractFileExt(s);
if ext<>'' then
delete(s,length(s)-length(ext)+1,length(ext));
current_module.linkOtherSharedLibs.add(s,link_always);
end;
end
else
repeat
inppu.getdatabuf(buffer,sizeof(buffer),l);
outppu.putdata(buffer,l);
until l<sizeof(buffer);
outppu.writeentry(b);
end;
until b=ibend;
{ write the last stuff and close }
outppu.flush;
outppu.writeheader;
outppu.free;
inppu.free;
{ rename }
if PPUFn=PPLFn then
begin
{$push}{$I-}
assign(f,PPUFn);
erase(f);
assign(f,'ppumove.$$$');
rename(f,PPUFn);
{$pop}
if ioresult<>0 then;
end;
Result:=True;
end;
procedure createimportlibfromexports;
var
hp : texported_item;
begin
hp:=texported_item(current_module._exports.first);
while assigned(hp) do
begin
current_module.AddExternalImport(current_module.realmodulename^,hp.name^,hp.name^,hp.index,hp.is_var,false);
hp:=texported_item(hp.next);
end;
end;
procedure proc_package;
var
main_file : tinputfile;
hp,hp2 : tmodule;
{finalize_procinfo,
init_procinfo,
main_procinfo : tcgprocinfo;}
force_init_final : boolean;
uu : tused_unit;
module_name: ansistring;
begin
Status.IsPackage:=true;
Status.IsExe:=true;
parse_only:=false;
{main_procinfo:=nil;
init_procinfo:=nil;
finalize_procinfo:=nil;}
if not RelocSectionSetExplicitly then
RelocSection:=true;
{ Relocation works only without stabs under Windows when }
{ external linker (LD) is used. LD generates relocs for }
{ stab sections which is not loaded in memory. It causes }
{ AV error when DLL is loaded and relocation is needed. }
{ Internal linker does not have this problem. }
if RelocSection and
(target_info.system in systems_all_windows+[system_i386_wdosx]) and
(cs_link_extern in current_settings.globalswitches) then
begin
include(current_settings.globalswitches,cs_link_strip);
{ Warning stabs info does not work with reloc section !! }
if (cs_debuginfo in current_settings.moduleswitches) and
(target_dbg.id=dbg_stabs) then
begin
Message1(parser_w_parser_reloc_no_debug,current_module.mainsource);
Message(parser_w_parser_win32_debug_needs_WN);
exclude(current_settings.moduleswitches,cs_debuginfo);
end;
end;
{ get correct output names }
main_file := current_scanner.inputfile;
while assigned(main_file.next) do
main_file := main_file.next;
current_module.SetFileName(main_file.path+main_file.name,true);
{ consume _PACKAGE word }
consume(_ID);
module_name:=orgpattern;
consume(_ID);
while token=_POINT do
begin
consume(_POINT);
module_name:=module_name+'.'+orgpattern;
consume(_ID);
end;
current_module.setmodulename(module_name);
current_module.ispackage:=true;
exportlib.preparelib(module_name);
if tf_library_needs_pic in target_info.flags then
include(current_settings.moduleswitches,cs_create_pic);
{ setup things using the switches, do this before the semicolon, because after the semicolon has been
read, all following directives are parsed as well }
setupglobalswitches;
consume(_SEMICOLON);
{ global switches are read, so further changes aren't allowed }
current_module.in_global:=false;
{ set implementation flag }
current_module.in_interface:=false;
current_module.interface_compiled:=true;
{ insert after the unit symbol tables the static symbol table }
{ of the program }
current_module.localsymtable:=tstaticsymtable.create(current_module.modulename^,current_module.moduleid);
{Load the units used by the program we compile.}
if token=_REQUIRES then
begin
end;
{Load the units used by the program we compile.}
if (token=_ID) and (idtoken=_CONTAINS) then
begin
{ consume _CONTAINS word }
consume(_ID);
while true do
begin
if token=_ID then
begin
module_name:=pattern;
consume(_ID);
while token=_POINT do
begin
consume(_POINT);
module_name:=module_name+'.'+orgpattern;
consume(_ID);
end;
AddUnit(module_name);
end
else
consume(_ID);
if token=_COMMA then
consume(_COMMA)
else break;
end;
consume(_SEMICOLON);
end;
{ All units are read, now give them a number }
current_module.updatemaps;
{Insert the name of the main program into the symbol table.}
if current_module.realmodulename^<>'' then
tabstractunitsymtable(current_module.localsymtable).insertunit(cunitsym.create(current_module.realmodulename^,current_module));
Message1(parser_u_parsing_implementation,current_module.mainsource);
symtablestack.push(current_module.localsymtable);
{ create whole program optimisation information }
current_module.wpoinfo:=tunitwpoinfo.create;
{ should we force unit initialization? }
force_init_final:=tstaticsymtable(current_module.localsymtable).needs_init_final;
if force_init_final or cnodeutils.force_init then
{init_procinfo:=gen_implicit_initfinal(uf_init,current_module.localsymtable)};
{ Add symbol to the exports section for win32 so smartlinking a
DLL will include the edata section }
if assigned(exportlib) and
(target_info.system in [system_i386_win32,system_i386_wdosx]) and
((current_module.flags and uf_has_exports)<>0) then
current_asmdata.asmlists[al_procedures].concat(tai_const.createname(make_mangledname('EDATA',current_module.localsymtable,''),0));
{ all labels must be defined before generating code }
if Errorcount=0 then
tstoredsymtable(current_module.localsymtable).checklabels;
symtablestack.pop(current_module.localsymtable);
{ consume the last point }
consume(_END);
consume(_POINT);
if (Errorcount=0) then
begin
{ test static symtable }
tstoredsymtable(current_module.localsymtable).allsymbolsused;
tstoredsymtable(current_module.localsymtable).allprivatesused;
tstoredsymtable(current_module.localsymtable).check_forwards;
current_module.allunitsused;
end;
new_section(current_asmdata.asmlists[al_globals],sec_data,'_FPCDummy',4);
current_asmdata.asmlists[al_globals].concat(tai_symbol.createname_global('_FPCDummy',AT_DATA,0));
current_asmdata.asmlists[al_globals].concat(tai_const.create_32bit(0));
new_section(current_asmdata.asmlists[al_procedures],sec_code,'',0);
current_asmdata.asmlists[al_procedures].concat(tai_symbol.createname_global('_DLLMainCRTStartup',AT_FUNCTION,0));
gen_fpc_dummy(current_asmdata.asmlists[al_procedures]);
current_asmdata.asmlists[al_procedures].concat(tai_const.createname('_FPCDummy',0));
{ leave when we got an error }
if (Errorcount>0) and not status.skip_error then
begin
Message1(unit_f_errors_in_unit,tostr(Errorcount));
status.skip_error:=true;
exit;
end;
{ remove all unused units, this happends when units are removed
from the uses clause in the source and the ppu was already being loaded }
hp:=tmodule(loaded_units.first);
while assigned(hp) do
begin
hp2:=hp;
hp:=tmodule(hp.next);
if hp2.is_unit and
not assigned(hp2.globalsymtable) then
loaded_units.remove(hp2);
end;
{ force exports }
uu:=tused_unit(usedunits.first);
while assigned(uu) do
begin
uu.u.globalsymtable.symlist.ForEachCall(@insert_export,uu.u.globalsymtable);
{ check localsymtable for exports too to get public symbols }
uu.u.localsymtable.symlist.ForEachCall(@insert_export,uu.u.localsymtable);
{ create special exports }
if (uu.u.flags and uf_init)<>0 then
procexport(make_mangledname('INIT$',uu.u.globalsymtable,''));
if (uu.u.flags and uf_finalize)<>0 then
procexport(make_mangledname('FINALIZE$',uu.u.globalsymtable,''));
if (uu.u.flags and uf_threadvars)=uf_threadvars then
varexport(make_mangledname('THREADVARLIST',uu.u.globalsymtable,''));
uu:=tused_unit(uu.next);
end;
{$ifdef arm}
{ Insert .pdata section for arm-wince.
It is needed for exception handling. }
if target_info.system in [system_arm_wince] then
InsertPData;
{$endif arm}
{ generate debuginfo }
if (cs_debuginfo in current_settings.moduleswitches) then
current_debuginfo.inserttypeinfo;
exportlib.generatelib;
{ write all our exports to the import library,
needs to be done after exportlib.generatelib; }
createimportlibfromexports;
{ generate imports }
if current_module.ImportLibraryList.Count>0 then
importlib.generatelib;
{ Reference all DEBUGINFO sections from the main .fpc section }
if (cs_debuginfo in current_settings.moduleswitches) then
current_debuginfo.referencesections(current_asmdata.asmlists[al_procedures]);
{ insert own objectfile }
insertobjectfile;
{ assemble and link }
create_objectfile;
{ We might need the symbols info if not using
the default do_extractsymbolinfo
which is a dummy function PM }
needsymbolinfo:=do_extractsymbolinfo<>@def_extractsymbolinfo;
{ release all local symtables that are not needed anymore }
if (not needsymbolinfo) then
free_localsymtables(current_module.localsymtable);
{ leave when we got an error }
if (Errorcount>0) and not status.skip_error then
begin
Message1(unit_f_errors_in_unit,tostr(Errorcount));
status.skip_error:=true;
exit;
end;
if (not current_module.is_unit) then
begin
{ finally rewrite all units included into the package }
uu:=tused_unit(usedunits.first);
while assigned(uu) do
begin
RewritePPU(uu.u.ppufilename,uu.u.ppufilename);
uu:=tused_unit(uu.next);
end;
{ create the executable when we are at level 1 }
if (compile_level=1) then
begin
{ create global resource file by collecting all resource files }
CollectResourceFiles;
{ write .def file }
if (cs_link_deffile in current_settings.globalswitches) then
deffile.writefile;
{ insert all .o files from all loaded units and
unload the units, we don't need them anymore.
Keep the current_module because that is still needed }
hp:=tmodule(loaded_units.first);
while assigned(hp) do
begin
{ the package itself contains no code so far }
linker.AddModuleFiles(hp);
hp2:=tmodule(hp.next);
if (hp<>current_module) and
(not needsymbolinfo) then
begin
loaded_units.remove(hp);
hp.free;
end;
hp:=hp2;
end;
linker.MakeSharedLibrary
end;
{ Give Fatal with error count for linker errors }
if (Errorcount>0) and not status.skip_error then
begin
Message1(unit_f_errors_in_unit,tostr(Errorcount));
status.skip_error:=true;
end;
end;
end;
procedure proc_program(islibrary : boolean);
type
TProgramParam = record
name : ansistring;
nr : dword;
end;
var
main_file : tinputfile;
hp,hp2 : tmodule;
finalize_procinfo,
init_procinfo,
main_procinfo : tcgprocinfo;
force_init_final : boolean;
resources_used : boolean;
program_name : ansistring;
consume_semicolon_after_uses : boolean;
ps : tstaticvarsym;
paramnum : longint;
textsym : ttypesym;
sc : array of TProgramParam;
i : Longint;
begin
DLLsource:=islibrary;
Status.IsLibrary:=IsLibrary;
Status.IsPackage:=false;
Status.IsExe:=true;
parse_only:=false;
main_procinfo:=nil;
init_procinfo:=nil;
finalize_procinfo:=nil;
resources_used:=false;
{ make the compiler happy and avoid an uninitialized variable warning on Setlength(sc,length(sc)+1); }
sc:=nil;
{ DLL defaults to create reloc info }
if islibrary then
begin
if not RelocSectionSetExplicitly then
RelocSection:=true;
end;
{ Relocation works only without stabs under Windows when }
{ external linker (LD) is used. LD generates relocs for }
{ stab sections which is not loaded in memory. It causes }
{ AV error when DLL is loaded and relocation is needed. }
{ Internal linker does not have this problem. }
if RelocSection and
(target_info.system in systems_all_windows+[system_i386_wdosx]) and
(cs_link_extern in current_settings.globalswitches) then
begin
include(current_settings.globalswitches,cs_link_strip);
{ Warning stabs info does not work with reloc section !! }
if (cs_debuginfo in current_settings.moduleswitches) and
(target_dbg.id=dbg_stabs) then
begin
Message1(parser_w_parser_reloc_no_debug,current_module.mainsource);
Message(parser_w_parser_win32_debug_needs_WN);
exclude(current_settings.moduleswitches,cs_debuginfo);
end;
end;
{ get correct output names }
main_file := current_scanner.inputfile;
while assigned(main_file.next) do
main_file := main_file.next;
current_module.SetFileName(main_file.path+main_file.name,true);
if islibrary then
begin
consume(_LIBRARY);
program_name:=orgpattern;
consume(_ID);
while token=_POINT do
begin
consume(_POINT);
program_name:=program_name+'.'+orgpattern;
consume(_ID);
end;
current_module.setmodulename(program_name);
current_module.islibrary:=true;
exportlib.preparelib(program_name);
if tf_library_needs_pic in target_info.flags then
include(current_settings.moduleswitches,cs_create_pic);
{ setup things using the switches, do this before the semicolon, because after the semicolon has been
read, all following directives are parsed as well }
setupglobalswitches;
consume(_SEMICOLON);
end
else
{ is there an program head ? }
if token=_PROGRAM then
begin
consume(_PROGRAM);
program_name:=orgpattern;
consume(_ID);
while token=_POINT do
begin
consume(_POINT);
program_name:=program_name+'.'+orgpattern;
consume(_ID);
end;
current_module.setmodulename(program_name);
if (target_info.system in systems_unit_program_exports) then
exportlib.preparelib(program_name);
if token=_LKLAMMER then
begin
consume(_LKLAMMER);
paramnum:=1;
repeat
if m_iso in current_settings.modeswitches then
begin
if (pattern<>'INPUT') and (pattern<>'OUTPUT') then
begin
{ the symtablestack is not setup here, so text must be created later on }
Setlength(sc,length(sc)+1);
with sc[high(sc)] do
begin
name:=pattern;
nr:=paramnum;
end;
inc(paramnum);
end;
end;
consume(_ID);
until not try_to_consume(_COMMA);
consume(_RKLAMMER);
end;
{ setup things using the switches, do this before the semicolon, because after the semicolon has been
read, all following directives are parsed as well }
setupglobalswitches;
consume(_SEMICOLON);
end
else
begin
if (target_info.system in systems_unit_program_exports) then
exportlib.preparelib(current_module.realmodulename^);
{ setup things using the switches }
setupglobalswitches;
end;
{ global switches are read, so further changes aren't allowed }
current_module.in_global:=false;
{ set implementation flag }
current_module.in_interface:=false;
current_module.interface_compiled:=true;
{ insert after the unit symbol tables the static symbol table
of the program }
current_module.localsymtable:=tstaticsymtable.create(current_module.modulename^,current_module.moduleid);
{ load standard units (system,objpas,profile unit) }
loaddefaultunits;
{ Load units provided on the command line }
loadautounits;
{ insert iso program parameters }
if length(sc)>0 then
begin
textsym:=search_system_type('TEXT');
if not(assigned(textsym)) then
internalerror(2013011201);
for i:=0 to high(sc) do
begin
ps:=cstaticvarsym.create(sc[i].name,vs_value,textsym.typedef,[]);
ps.isoindex:=sc[i].nr;
current_module.localsymtable.insert(ps,true);
cnodeutils.insertbssdata(tstaticvarsym(ps));
end;
end;
{ Load the units used by the program we compile. }
if token=_USES then
begin
loadunits(nil);
consume_semicolon_after_uses:=true;
end
else
consume_semicolon_after_uses:=false;
{ All units are read, now give them a number }
current_module.updatemaps;
{ consume the semicolon after maps have been updated else conditional compiling expressions
might cause internal errors, see tw8611 }
if consume_semicolon_after_uses then
consume(_SEMICOLON);
{Insert the name of the main program into the symbol table.}
if current_module.realmodulename^<>'' then
tabstractunitsymtable(current_module.localsymtable).insertunit(cunitsym.create(current_module.realmodulename^,current_module));
Message1(parser_u_parsing_implementation,current_module.mainsource);
symtablestack.push(current_module.localsymtable);
{$ifdef jvm}
{ fake classdef to represent the class corresponding to the unit }
addmoduleclass;
{$endif}
{ Insert _GLOBAL_OFFSET_TABLE_ symbol if system uses it }
maybe_load_got;
{ create whole program optimisation information }
current_module.wpoinfo:=tunitwpoinfo.create;
{ The program intialization needs an alias, so it can be called
from the bootstrap code.}
if islibrary then
begin
main_procinfo:=create_main_proc(make_mangledname('',current_module.localsymtable,mainaliasname),potype_proginit,current_module.localsymtable);
{ Win32 startup code needs a single name }
if not(target_info.system in (systems_darwin+systems_aix)) then
main_procinfo.procdef.aliasnames.insert('PASCALMAIN')
else
main_procinfo.procdef.aliasnames.insert(target_info.Cprefix+'PASCALMAIN')
end
else if (target_info.system in ([system_i386_netware,system_i386_netwlibc,system_powerpc_macos]+systems_darwin+systems_aix)) then
begin
main_procinfo:=create_main_proc('PASCALMAIN',potype_proginit,current_module.localsymtable);
end
else
begin
main_procinfo:=create_main_proc(mainaliasname,potype_proginit,current_module.localsymtable);
main_procinfo.procdef.aliasnames.insert('PASCALMAIN');
end;
main_procinfo.parse_body;
{ save file pos for debuginfo }
current_module.mainfilepos:=main_procinfo.entrypos;
{ Generate specializations of objectdefs methods }
generate_specialization_procs;
{ add implementations for synthetic method declarations added by
the compiler }
add_synthetic_method_implementations(current_module.localsymtable);
{ should we force unit initialization? }
force_init_final:=tstaticsymtable(current_module.localsymtable).needs_init_final;
if force_init_final or cnodeutils.force_init then
init_procinfo:=gen_implicit_initfinal(uf_init,current_module.localsymtable);
{ Add symbol to the exports section for win32 so smartlinking a
DLL will include the edata section }
if assigned(exportlib) and
(target_info.system in [system_i386_win32,system_i386_wdosx]) and
((current_module.flags and uf_has_exports)<>0) then
current_asmdata.asmlists[al_procedures].concat(tai_const.createname(make_mangledname('EDATA',current_module.localsymtable,''),0));
{ finalize? }
if token=_FINALIZATION then
begin
{ Parse the finalize }
finalize_procinfo:=create_main_proc(make_mangledname('',current_module.localsymtable,'finalize'),potype_unitfinalize,current_module.localsymtable);
finalize_procinfo.procdef.aliasnames.insert(make_mangledname('FINALIZE$',current_module.localsymtable,''));
finalize_procinfo.procdef.aliasnames.insert('PASCALFINALIZE');
finalize_procinfo.parse_body;
end
else
if force_init_final or cnodeutils.force_final then
finalize_procinfo:=gen_implicit_initfinal(uf_finalize,current_module.localsymtable);
{ the finalization routine of libraries is generic (and all libraries need to }
{ be finalized, so they can finalize any units they use }
if (islibrary) then
exportlib.setfininame(current_asmdata.asmlists[al_procedures],'FPC_LIB_EXIT');
{ all labels must be defined before generating code }
if Errorcount=0 then
tstoredsymtable(current_module.localsymtable).checklabels;
{ See remark in unit init/final }
main_procinfo.generate_code;
main_procinfo.resetprocdef;
release_main_proc(main_procinfo);
if assigned(init_procinfo) then
begin
{ initialization can be implicit only }
current_module.flags:=current_module.flags or uf_init;
init_procinfo.code:=cnodeutils.wrap_proc_body(init_procinfo.procdef,init_procinfo.code);
init_procinfo.generate_code;
init_procinfo.resetprocdef;
release_main_proc(init_procinfo);
end;
if assigned(finalize_procinfo) then
begin
if force_init_final or
cnodeutils.force_init or
not(has_no_code(finalize_procinfo.code)) then
begin
finalize_procinfo.code:=cnodeutils.wrap_proc_body(finalize_procinfo.procdef,finalize_procinfo.code);
finalize_procinfo.generate_code;
current_module.flags:=current_module.flags or uf_finalize;
end;
finalize_procinfo.resetprocdef;
release_main_proc(finalize_procinfo);
end;
symtablestack.pop(current_module.localsymtable);
{ consume the last point }
consume(_POINT);
{ reset wpo flags for all defs }
reset_all_defs;
if (Errorcount=0) then
begin
{ test static symtable }
tstoredsymtable(current_module.localsymtable).allsymbolsused;
tstoredsymtable(current_module.localsymtable).allprivatesused;
tstoredsymtable(current_module.localsymtable).check_forwards;
current_module.allunitsused;
end;
{ leave when we got an error }
if (Errorcount>0) and not status.skip_error then
begin
Message1(unit_f_errors_in_unit,tostr(Errorcount));
status.skip_error:=true;
exit;
end;
{ remove all unused units, this happens when units are removed
from the uses clause in the source and the ppu was already being loaded }
hp:=tmodule(loaded_units.first);
while assigned(hp) do
begin
hp2:=hp;
hp:=tmodule(hp.next);
if hp2.is_unit and
not assigned(hp2.globalsymtable) then
begin
loaded_units.remove(hp2);
unloaded_units.concat(hp2);
end;
end;
{ do we need to add the variants unit? }
maybeloadvariantsunit;
{ Now that everything has been compiled we know if we need resource
support. If not, remove the unit. }
resources_used:=MaybeRemoveResUnit;
linker.initsysinitunitname;
if target_info.system in systems_internal_sysinit then
begin
{ add start/halt unit }
AddUnit(linker.sysinitunit);
end;
{$ifdef arm}
{ Insert .pdata section for arm-wince.
It is needed for exception handling. }
if target_info.system in [system_arm_wince] then
InsertPData;
{$endif arm}
cnodeutils.InsertThreadvars;
{ generate rtti/init tables }
write_persistent_type_info(current_module.localsymtable,false);
{ if an Objective-C module, generate rtti and module info }
MaybeGenerateObjectiveCImageInfo(nil,current_module.localsymtable);
{ generate imports }
if current_module.ImportLibraryList.Count>0 then
importlib.generatelib;
{ generate debuginfo }
if (cs_debuginfo in current_settings.moduleswitches) then
current_debuginfo.inserttypeinfo;
if islibrary or (target_info.system in systems_unit_program_exports) then
exportlib.generatelib;
{ Reference all DEBUGINFO sections from the main .fpc section }
if (cs_debuginfo in current_settings.moduleswitches) then
current_debuginfo.referencesections(current_asmdata.asmlists[al_procedures]);
{ Resource strings }
GenerateResourceStrings;
{ Windows widestring needing initialization }
cnodeutils.InsertWideInits;
{ Resourcestring references (const foo:string=someresourcestring) }
cnodeutils.InsertResStrInits;
{ insert Tables and StackLength }
cnodeutils.InsertInitFinalTable;
cnodeutils.InsertThreadvarTablesTable;
cnodeutils.InsertResourceTablesTable;
cnodeutils.InsertWideInitsTablesTable;
cnodeutils.InsertResStrTablesTable;
cnodeutils.InsertMemorySizes;
{ Insert symbol to resource info }
cnodeutils.InsertResourceInfo(resources_used);
{ create callframe info }
create_dwarf_frame;
{ insert own objectfile }
insertobjectfile;
{ assemble and link }
create_objectfile;
{ We might need the symbols info if not using
the default do_extractsymbolinfo
which is a dummy function PM }
needsymbolinfo:=
(do_extractsymbolinfo<>@def_extractsymbolinfo) or
((current_settings.genwpoptimizerswitches*WPOptimizationsNeedingAllUnitInfo)<>[]);
{ release all local symtables that are not needed anymore }
if (not needsymbolinfo) then
free_localsymtables(current_module.localsymtable);
{ leave when we got an error }
if (Errorcount>0) and not status.skip_error then
begin
Message1(unit_f_errors_in_unit,tostr(Errorcount));
status.skip_error:=true;
exit;
end;
if (not current_module.is_unit) then
begin
{ create the executable when we are at level 1 }
if (compile_level=1) then
begin
{ create global resource file by collecting all resource files }
CollectResourceFiles;
{ write .def file }
if (cs_link_deffile in current_settings.globalswitches) then
deffile.writefile;
{ insert all .o files from all loaded units and
unload the units, we don't need them anymore.
Keep the current_module because that is still needed }
hp:=tmodule(loaded_units.first);
while assigned(hp) do
begin
linker.AddModuleFiles(hp);
hp2:=tmodule(hp.next);
if (hp<>current_module) and
(not needsymbolinfo) then
begin
loaded_units.remove(hp);
hp.free;
end;
hp:=hp2;
end;
{ free also unneeded units we didn't free before }
if not needsymbolinfo then
unloaded_units.Clear;
{ finally we can create a executable }
if DLLSource then
linker.MakeSharedLibrary
else
linker.MakeExecutable;
{ collect all necessary information for whole-program optimization }
wpoinfomanager.extractwpoinfofromprogram;
end;
{ Give Fatal with error count for linker errors }
if (Errorcount>0) and not status.skip_error then
begin
Message1(unit_f_errors_in_unit,tostr(Errorcount));
status.skip_error:=true;
end;
end;
end;
end.
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