-
Notifications
You must be signed in to change notification settings - Fork 173
/
Copy pathassemble.pas
1497 lines (1355 loc) · 46.1 KB
/
assemble.pas
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
{
Copyright (c) 1998-2004 by Peter Vreman
This unit handles the assemblerfile write and assembler calls of FPC
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.
****************************************************************************
}
{# @abstract(This unit handles the assembler file write and assembler calls of FPC)
Handles the calls to the actual external assemblers, as well as the generation
of object files for smart linking. Also contains the base class for writing
the assembler statements to file.
}
unit assemble;
{$i fpcdefs.inc}
interface
uses
SysUtils,
systems,globtype,globals,aasmbase,aasmtai,aasmdata,ogbase,finput;
const
{ maximum of aasmoutput lists there will be }
maxoutputlists = 20;
{ buffer size for writing the .s file }
AsmOutSize=32768*4;
type
TAssembler=class(TAbstractAssembler)
public
{filenames}
path : string;
name : string;
AsmFileName, { current .s and .o file }
ObjFileName,
ppufilename : string;
asmprefix : string;
SmartAsm : boolean;
SmartFilesCount,
SmartHeaderCount : longint;
Constructor Create(smart:boolean);virtual;
Destructor Destroy;override;
procedure NextSmartName(place:tcutplace);
procedure MakeObject;virtual;abstract;
end;
{# This is the base class which should be overriden for each each
assembler writer. It is used to actually assembler a file,
and write the output to the assembler file.
}
TExternalAssembler=class(TAssembler)
private
procedure CreateSmartLinkPath(const s:string);
protected
{outfile}
AsmSize,
AsmStartSize,
outcnt : longint;
outbuf : array[0..AsmOutSize-1] of char;
outfile : file;
ioerror : boolean;
{input source info}
lastfileinfo : tfileposinfo;
infile,
lastinfile : tinputfile;
{last section type written}
lastsectype : TAsmSectionType;
public
{# Returns the complete path and executable name of the assembler
program.
It first tries looking in the UTIL directory if specified,
otherwise it searches in the free pascal binary directory, in
the current working directory and then in the directories
in the $PATH environment.}
Function FindAssembler:string;
{# Actually does the call to the assembler file. Returns false
if the assembling of the file failed.}
Function CallAssembler(const command:string; const para:TCmdStr):Boolean;
Function DoAssemble:boolean;virtual;
Procedure RemoveAsm;
Procedure AsmFlush;
Procedure AsmClear;
{# Write a string to the assembler file }
Procedure AsmWrite(const s:string);
{# Write a string to the assembler file }
Procedure AsmWritePChar(p:pchar);
{# Write a string to the assembler file followed by a new line }
Procedure AsmWriteLn(const s:string);
{# Write a new line to the assembler file }
Procedure AsmLn;
procedure AsmCreate(Aplace:tcutplace);
procedure AsmClose;
{# This routine should be overriden for each assembler, it is used
to actually write the abstract assembler stream to file.}
procedure WriteTree(p:TAsmList);virtual;
{# This routine should be overriden for each assembler, it is used
to actually write all the different abstract assembler streams
by calling for each stream type, the @var(WriteTree) method.}
procedure WriteAsmList;virtual;
{# Constructs the command line for calling the assembler }
function MakeCmdLine: TCmdStr; virtual;
public
Constructor Create(smart:boolean);override;
procedure MakeObject;override;
end;
TInternalAssembler=class(TAssembler)
private
FCObjOutput : TObjOutputclass;
{ the aasmoutput lists that need to be processed }
lists : byte;
list : array[1..maxoutputlists] of TAsmList;
{ current processing }
currlistidx : byte;
currlist : TAsmList;
procedure WriteStab(p:pchar);
function MaybeNextList(var hp:Tai):boolean;
function TreePass0(hp:Tai):Tai;
function TreePass1(hp:Tai):Tai;
function TreePass2(hp:Tai):Tai;
procedure writetree;
procedure writetreesmart;
protected
ObjData : TObjData;
ObjOutput : tObjOutput;
property CObjOutput:TObjOutputclass read FCObjOutput write FCObjOutput;
public
constructor create(smart:boolean);override;
destructor destroy;override;
procedure MakeObject;override;
end;
TAssemblerClass = class of TAssembler;
Procedure GenerateAsm(smart:boolean);
Procedure OnlyAsm;
procedure RegisterAssembler(const r:tasminfo;c:TAssemblerClass);
Implementation
uses
{$ifdef hasunix}
unix,
{$endif}
cutils,cfileutl,
{$ifdef memdebug}
cclasses,
{$endif memdebug}
script,fmodule,verbose,
{$if defined(m68k) or defined(arm)}
cpuinfo,
{$endif m68k or arm}
aasmcpu,
owbase,owar
;
var
CAssembler : array[tasm] of TAssemblerClass;
{*****************************************************************************
TAssembler
*****************************************************************************}
Constructor TAssembler.Create(smart:boolean);
begin
{ load start values }
AsmFileName:=current_module.AsmFilename^;
ObjFileName:=current_module.ObjFileName^;
name:=Lower(current_module.modulename^);
path:=current_module.outputpath^;
asmprefix := current_module.asmprefix^;
if not assigned(current_module.outputpath) then
ppufilename := ''
else
ppufilename := current_module.ppufilename^;
SmartAsm:=smart;
SmartFilesCount:=0;
SmartHeaderCount:=0;
SmartLinkOFiles.Clear;
end;
Destructor TAssembler.Destroy;
begin
end;
procedure TAssembler.NextSmartName(place:tcutplace);
var
s : string;
begin
inc(SmartFilesCount);
if SmartFilesCount>999999 then
Message(asmw_f_too_many_asm_files);
case place of
cut_begin :
begin
inc(SmartHeaderCount);
s:=asmprefix+tostr(SmartHeaderCount)+'h';
end;
cut_normal :
s:=asmprefix+tostr(SmartHeaderCount)+'s';
cut_end :
s:=asmprefix+tostr(SmartHeaderCount)+'t';
end;
AsmFileName:=Path+FixFileName(s+tostr(SmartFilesCount)+target_info.asmext);
ObjFileName:=Path+FixFileName(s+tostr(SmartFilesCount)+target_info.objext);
{ insert in container so it can be cleared after the linking }
SmartLinkOFiles.Insert(ObjFileName);
end;
{*****************************************************************************
TExternalAssembler
*****************************************************************************}
Function DoPipe:boolean;
begin
DoPipe:=(cs_asm_pipe in current_settings.globalswitches) and
(([cs_asm_leave,cs_link_on_target] * current_settings.globalswitches) = []) and
((target_asm.id in [as_gas,as_ggas,as_darwin]));
end;
Constructor TExternalAssembler.Create(smart:boolean);
begin
inherited Create(smart);
if SmartAsm then
begin
path:=FixPath(ChangeFileExt(AsmFileName,target_info.smartext),false);
CreateSmartLinkPath(path);
end;
Outcnt:=0;
end;
procedure TExternalAssembler.CreateSmartLinkPath(const s:string);
procedure DeleteFilesWithExt(const AExt:string);
var
dir : TSearchRec;
begin
if findfirst(s+source_info.dirsep+'*'+AExt,faAnyFile,dir) = 0 then
begin
repeat
DeleteFile(s+source_info.dirsep+dir.name);
until findnext(dir) <> 0;
end;
findclose(dir);
end;
var
hs : string;
begin
if PathExists(s,false) then
begin
{ the path exists, now we clean only all the .o and .s files }
DeleteFilesWithExt(target_info.objext);
DeleteFilesWithExt(target_info.asmext);
end
else
begin
hs:=s;
if hs[length(hs)] in ['/','\'] then
delete(hs,length(hs),1);
{$I-}
mkdir(hs);
{$I+}
if ioresult<>0 then;
end;
end;
const
lastas : byte=255;
var
LastASBin : TCmdStr;
Function TExternalAssembler.FindAssembler:string;
var
asfound : boolean;
UtilExe : string;
begin
asfound:=false;
if cs_link_on_target in current_settings.globalswitches then
begin
{ If linking on target, don't add any path PM }
FindAssembler:=utilsprefix+ChangeFileExt(target_asm.asmbin,target_info.exeext);
exit;
end
else
UtilExe:=utilsprefix+ChangeFileExt(target_asm.asmbin,source_info.exeext);
if lastas<>ord(target_asm.id) then
begin
lastas:=ord(target_asm.id);
{ is an assembler passed ? }
if utilsdirectory<>'' then
asfound:=FindFile(UtilExe,utilsdirectory,false,LastASBin);
if not AsFound then
asfound:=FindExe(UtilExe,false,LastASBin);
if (not asfound) and not(cs_asm_extern in current_settings.globalswitches) then
begin
Message1(exec_e_assembler_not_found,LastASBin);
current_settings.globalswitches:=current_settings.globalswitches+[cs_asm_extern];
end;
if asfound then
Message1(exec_t_using_assembler,LastASBin);
end;
FindAssembler:=LastASBin;
end;
Function TExternalAssembler.CallAssembler(const command:string; const para:TCmdStr):Boolean;
var
DosExitCode : Integer;
begin
result:=true;
if (cs_asm_extern in current_settings.globalswitches) then
begin
AsmRes.AddAsmCommand(command,para,name);
exit;
end;
try
FlushOutput;
DosExitCode := ExecuteProcess(command,para);
if DosExitCode <>0
then begin
Message1(exec_e_error_while_assembling,tostr(dosexitcode));
result:=false;
end;
except on E:EOSError do
begin
Message1(exec_e_cant_call_assembler,tostr(E.ErrorCode));
current_settings.globalswitches:=current_settings.globalswitches+[cs_asm_extern];
result:=false;
end;
end;
end;
procedure TExternalAssembler.RemoveAsm;
var
g : file;
begin
if cs_asm_leave in current_settings.globalswitches then
exit;
if cs_asm_extern in current_settings.globalswitches then
AsmRes.AddDeleteCommand(AsmFileName)
else
begin
assign(g,AsmFileName);
{$I-}
erase(g);
{$I+}
if ioresult<>0 then;
end;
end;
Function TExternalAssembler.DoAssemble:boolean;
begin
DoAssemble:=true;
if DoPipe then
exit;
if not(cs_asm_extern in current_settings.globalswitches) then
begin
if SmartAsm then
begin
if (SmartFilesCount<=1) then
Message1(exec_i_assembling_smart,name);
end
else
Message1(exec_i_assembling,name);
end;
if CallAssembler(FindAssembler,MakeCmdLine) then
RemoveAsm
else
begin
DoAssemble:=false;
GenerateError;
end;
end;
Procedure TExternalAssembler.AsmFlush;
begin
if outcnt>0 then
begin
{ suppress i/o error }
{$i-}
BlockWrite(outfile,outbuf,outcnt);
{$i+}
ioerror:=ioerror or (ioresult<>0);
outcnt:=0;
end;
end;
Procedure TExternalAssembler.AsmClear;
begin
outcnt:=0;
end;
Procedure TExternalAssembler.AsmWrite(const s:string);
begin
if OutCnt+length(s)>=AsmOutSize then
AsmFlush;
Move(s[1],OutBuf[OutCnt],length(s));
inc(OutCnt,length(s));
inc(AsmSize,length(s));
end;
Procedure TExternalAssembler.AsmWriteLn(const s:string);
begin
AsmWrite(s);
AsmLn;
end;
Procedure TExternalAssembler.AsmWritePChar(p:pchar);
var
i,j : longint;
begin
i:=StrLen(p);
j:=i;
while j>0 do
begin
i:=min(j,AsmOutSize);
if OutCnt+i>=AsmOutSize then
AsmFlush;
Move(p[0],OutBuf[OutCnt],i);
inc(OutCnt,i);
inc(AsmSize,i);
dec(j,i);
p:=pchar(@p[i]);
end;
end;
Procedure TExternalAssembler.AsmLn;
begin
if OutCnt>=AsmOutSize-2 then
AsmFlush;
if (cs_link_on_target in current_settings.globalswitches) then
begin
OutBuf[OutCnt]:=target_info.newline[1];
inc(OutCnt);
inc(AsmSize);
if length(target_info.newline)>1 then
begin
OutBuf[OutCnt]:=target_info.newline[2];
inc(OutCnt);
inc(AsmSize);
end;
end
else
begin
OutBuf[OutCnt]:=source_info.newline[1];
inc(OutCnt);
inc(AsmSize);
if length(source_info.newline)>1 then
begin
OutBuf[OutCnt]:=source_info.newline[2];
inc(OutCnt);
inc(AsmSize);
end;
end;
end;
function TExternalAssembler.MakeCmdLine: TCmdStr;
begin
result:=target_asm.asmcmd;
{$ifdef m68k}
if current_settings.cputype = cpu_MC68020 then
result:='-m68020 '+result
else
result:='-m68000 '+result;
{$endif}
if (cs_link_on_target in current_settings.globalswitches) then
begin
Replace(result,'$ASM',maybequoted(ScriptFixFileName(AsmFileName)));
Replace(result,'$OBJ',maybequoted(ScriptFixFileName(ObjFileName)));
end
else
begin
{$ifdef hasunix}
if DoPipe then
Replace(result,'$ASM','')
else
{$endif}
Replace(result,'$ASM',maybequoted(AsmFileName));
Replace(result,'$OBJ',maybequoted(ObjFileName));
end;
end;
procedure TExternalAssembler.AsmCreate(Aplace:tcutplace);
begin
if SmartAsm then
NextSmartName(Aplace);
{$ifdef hasunix}
if DoPipe then
begin
if SmartAsm then
begin
if (SmartFilesCount<=1) then
Message1(exec_i_assembling_smart,name);
end
else
Message1(exec_i_assembling_pipe,AsmFileName);
POpen(outfile,FindAssembler+' '+MakeCmdLine,'W');
end
else
{$endif}
begin
Assign(outfile,AsmFileName);
{$I-}
Rewrite(outfile,1);
{$I+}
if ioresult<>0 then
begin
ioerror:=true;
Message1(exec_d_cant_create_asmfile,AsmFileName);
end;
end;
outcnt:=0;
AsmSize:=0;
AsmStartSize:=0;
end;
procedure TExternalAssembler.AsmClose;
var
f : file;
FileAge : longint;
begin
AsmFlush;
{$ifdef hasunix}
if DoPipe then
begin
if PClose(outfile) <> 0 then
GenerateError;
end
else
{$endif}
begin
{Touch Assembler time to ppu time is there is a ppufilename}
if ppufilename<>'' then
begin
Assign(f,ppufilename);
{$I-}
reset(f,1);
{$I+}
if ioresult=0 then
begin
FileAge := FileGetDate(GetFileHandle(f));
close(f);
reset(outfile,1);
FileSetDate(GetFileHandle(outFile),FileAge);
end;
end;
close(outfile);
end;
end;
procedure TExternalAssembler.WriteTree(p:TAsmList);
begin
end;
procedure TExternalAssembler.WriteAsmList;
begin
end;
procedure TExternalAssembler.MakeObject;
begin
AsmCreate(cut_normal);
FillChar(lastfileinfo, sizeof(lastfileinfo), 0);
lastfileinfo.line := -1;
lastinfile := nil;
lastsectype := sec_none;
WriteAsmList;
AsmClose;
if not(ioerror) then
DoAssemble;
end;
{*****************************************************************************
TInternalAssembler
*****************************************************************************}
constructor TInternalAssembler.create(smart:boolean);
begin
inherited create(smart);
ObjOutput:=nil;
ObjData:=nil;
SmartAsm:=smart;
end;
destructor TInternalAssembler.destroy;
begin
if assigned(ObjData) then
ObjData.free;
if assigned(ObjOutput) then
ObjOutput.free;
end;
procedure TInternalAssembler.WriteStab(p:pchar);
function consumecomma(var p:pchar):boolean;
begin
while (p^=' ') do
inc(p);
result:=(p^=',');
inc(p);
end;
function consumenumber(var p:pchar;out value:longint):boolean;
var
hs : string;
len,
code : integer;
begin
value:=0;
while (p^=' ') do
inc(p);
len:=0;
while (p^ in ['0'..'9']) do
begin
inc(len);
hs[len]:=p^;
inc(p);
end;
if len>0 then
begin
hs[0]:=chr(len);
val(hs,value,code);
end
else
code:=-1;
result:=(code=0);
end;
function consumeoffset(var p:pchar;out relocsym:tobjsymbol;out value:longint):boolean;
var
hs : string;
len,
code : integer;
pstart : pchar;
sym : tobjsymbol;
exprvalue : longint;
gotmin,
have_first_symbol,
have_second_symbol,
dosub : boolean;
begin
result:=false;
value:=0;
relocsym:=nil;
gotmin:=false;
have_first_symbol:=false;
have_second_symbol:=false;
repeat
dosub:=false;
exprvalue:=0;
if gotmin then
begin
dosub:=true;
gotmin:=false;
end;
while (p^=' ') do
inc(p);
case p^ of
#0 :
break;
' ' :
inc(p);
'0'..'9' :
begin
len:=0;
while (p^ in ['0'..'9']) do
begin
inc(len);
hs[len]:=p^;
inc(p);
end;
hs[0]:=chr(len);
val(hs,exprvalue,code);
if code<>0 then
internalerror(200702251);
end;
'.','_',
'A'..'Z',
'a'..'z' :
begin
pstart:=p;
while not(p^ in [#0,' ','-','+']) do
inc(p);
len:=p-pstart;
if len>255 then
internalerror(200509187);
move(pstart^,hs[1],len);
hs[0]:=chr(len);
sym:=objdata.symbolref(hs);
have_first_symbol:=true;
{ Second symbol? }
if assigned(relocsym) then
begin
if have_second_symbol then
internalerror(2007032201);
have_second_symbol:=true;
if not have_first_symbol then
internalerror(2007032202);
{ second symbol should substracted to first }
if not dosub then
internalerror(2007032203);
if (relocsym.objsection<>sym.objsection) then
internalerror(2005091810);
exprvalue:=relocsym.address-sym.address;
relocsym:=nil;
dosub:=false;
end
else
begin
relocsym:=sym;
if assigned(sym.objsection) then
begin
{ first symbol should be + }
if not have_first_symbol and dosub then
internalerror(2007032204);
have_first_symbol:=true;
end;
end;
end;
'+' :
begin
{ nothing, by default addition is done }
inc(p);
end;
'-' :
begin
gotmin:=true;
inc(p);
end;
else
internalerror(200509189);
end;
if dosub then
dec(value,exprvalue)
else
inc(value,exprvalue);
until false;
result:=true;
end;
var
stabstrlen,
ofs,
nline,
nidx,
nother,
i : longint;
stab : TObjStabEntry;
relocsym : TObjSymbol;
pstr,
pcurr,
pendquote : pchar;
oldsec : TObjSection;
begin
pcurr:=nil;
pstr:=nil;
pendquote:=nil;
relocsym:=nil;
ofs:=0;
{ Parse string part }
if (p[0]='"') then
begin
pstr:=@p[1];
{ Ignore \" inside the string }
i:=1;
while not((p[i]='"') and (p[i-1]<>'\')) and
(p[i]<>#0) do
inc(i);
pendquote:=@p[i];
pendquote^:=#0;
pcurr:=@p[i+1];
if not consumecomma(pcurr) then
internalerror(200509181);
end
else
pcurr:=p;
{ When in pass 1 then only alloc and leave }
if ObjData.currpass=1 then
begin
ObjData.StabsSec.Alloc(sizeof(TObjStabEntry));
if assigned(pstr) and (pstr[0]<>#0) then
ObjData.StabStrSec.Alloc(strlen(pstr)+1);
end
else
begin
{ Stabs format: nidx,nother,nline[,offset] }
if not consumenumber(pcurr,nidx) then
internalerror(200509182);
if not consumecomma(pcurr) then
internalerror(200509183);
if not consumenumber(pcurr,nother) then
internalerror(200509184);
if not consumecomma(pcurr) then
internalerror(200509185);
if not consumenumber(pcurr,nline) then
internalerror(200509186);
if consumecomma(pcurr) then
consumeoffset(pcurr,relocsym,ofs);
{ Generate stab entry }
if assigned(pstr) and (pstr[0]<>#0) then
begin
stabstrlen:=strlen(pstr);
{$ifdef optimizestabs}
StabStrEntry:=nil;
if (nidx=N_SourceFile) or (nidx=N_IncludeFile) then
begin
hs:=strpas(pstr);
StabstrEntry:=StabStrDict.Find(hs);
if not assigned(StabstrEntry) then
begin
StabstrEntry:=TStabStrEntry.Create(hs);
StabstrEntry:=StabStrSec.Size;
StabStrDict.Insert(StabstrEntry);
{ generate new stab }
StabstrEntry:=nil;
end;
end;
if assigned(StabstrEntry) then
stab.strpos:=StabstrEntry.strpos
else
{$endif optimizestabs}
begin
stab.strpos:=ObjData.StabStrSec.Size;
ObjData.StabStrSec.write(pstr^,stabstrlen+1);
end;
end
else
stab.strpos:=0;
stab.ntype:=byte(nidx);
stab.ndesc:=word(nline);
stab.nother:=byte(nother);
stab.nvalue:=ofs;
{ Write the stab first without the value field. Then
write a the value field with relocation }
oldsec:=ObjData.CurrObjSec;
ObjData.SetSection(ObjData.StabsSec);
ObjData.Writebytes(stab,sizeof(TObjStabEntry)-4);
ObjData.Writereloc(stab.nvalue,4,relocsym,RELOC_ABSOLUTE);
ObjData.setsection(oldsec);
end;
if assigned(pendquote) then
pendquote^:='"';
end;
function TInternalAssembler.MaybeNextList(var hp:Tai):boolean;
begin
{ maybe end of list }
while not assigned(hp) do
begin
if currlistidx<lists then
begin
inc(currlistidx);
currlist:=list[currlistidx];
hp:=Tai(currList.first);
end
else
begin
MaybeNextList:=false;
exit;
end;
end;
MaybeNextList:=true;
end;
function TInternalAssembler.TreePass0(hp:Tai):Tai;
var
objsym,
objsymend : TObjSymbol;
begin
while assigned(hp) do
begin
case hp.typ of
ait_align :
begin
if tai_align_abstract(hp).aligntype>1 then
begin
{ always use the maximum fillsize in this pass to avoid possible
short jumps to become out of range }
Tai_align_abstract(hp).fillsize:=Tai_align_abstract(hp).aligntype;
ObjData.alloc(Tai_align_abstract(hp).fillsize);
end
else
Tai_align_abstract(hp).fillsize:=0;
end;
ait_datablock :
begin
{$ifdef USE_COMM_IN_BSS}
if writingpackages and
Tai_datablock(hp).is_global then
ObjData.SymbolDefine(Tai_datablock(hp).sym)
else
{$endif USE_COMM_IN_BSS}
begin
ObjData.allocalign(used_align(size_2_align(Tai_datablock(hp).size),0,ObjData.CurrObjSec.secalign));
ObjData.SymbolDefine(Tai_datablock(hp).sym);
ObjData.alloc(Tai_datablock(hp).size);
end;
end;
ait_real_80bit :
ObjData.alloc(10);
ait_real_64bit :
ObjData.alloc(8);
ait_real_32bit :
ObjData.alloc(4);
ait_comp_64bit :
ObjData.alloc(8);
ait_const:
begin
{ if symbols are provided we can calculate the value for relative symbols.
This is required for length calculation of leb128 constants }
if assigned(tai_const(hp).sym) then
begin
objsym:=Objdata.SymbolRef(tai_const(hp).sym);
{ objsym already defined and there is endsym? }
if assigned(objsym.objsection) and assigned(tai_const(hp).endsym) then
begin
objsymend:=Objdata.SymbolRef(tai_const(hp).endsym);
{ objsymend already defined? }
if assigned(objsymend.objsection) then
begin
if objsymend.objsection<>objsym.objsection then
internalerror(200404124);
Tai_const(hp).value:=objsymend.address-objsym.address+Tai_const(hp).symofs;
end;
end;
end;
ObjData.alloc(tai_const(hp).size);
end;
ait_section:
begin
ObjData.CreateSection(Tai_section(hp).sectype,Tai_section(hp).name^,Tai_section(hp).secorder);
Tai_section(hp).sec:=ObjData.CurrObjSec;
end;
ait_symbol :
ObjData.SymbolDefine(Tai_symbol(hp).sym);
ait_label :
ObjData.SymbolDefine(Tai_label(hp).labsym);
ait_string :
ObjData.alloc(Tai_string(hp).len);
ait_instruction :