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
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
|
{
Copyright (c) 2002 by Florian Klaempfl
This unit implements an asmoutput class for PowerPC with MPW syntax
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
****************************************************************************
}
{
This unit implements an asmoutput class for PowerPC with MPW syntax
}
unit agppcmpw;
{$i fpcdefs.inc}
{ We know that use_PR is a const boolean
but we don't care about this warning }
{$WARN 6018 OFF}
interface
uses
aasmtai,aasmdata,
globals,aasmbase,aasmcpu,assemble,
cpubase;
type
TPPCMPWAssembler = class(TExternalAssembler)
procedure WriteTree(p:TAsmList);override;
procedure WriteAsmList;override;
Function DoAssemble:boolean;override;
procedure WriteExternals;
procedure WriteAsmFileHeader;
private
cur_CSECT_name: String;
cur_CSECT_class: String;
procedure WriteInstruction(hp : tai);
procedure WriteProcedureHeader(var hp:tai);
procedure WriteDataHeader(var s:string; isExported, isConst:boolean);
end;
implementation
uses
cutils,globtype,systems,cclasses,
verbose,finput,fmodule,cscript,cpuinfo,
cgbase,cgutils,
itcpugas
;
const
line_length = 70;
{Whether internal procedure references should be xxx[PR]: }
use_PR = false;
const_storage_class = '';
var_storage_class = '';
secnames : array[TAsmSectiontype] of string[10] = (
'', {none}
'', {user}
'csect', {code}
'csect', {data}
'csect', {read only data}
'csect', {read only data - no relocations}
'csect', {bss} 'csect', '',
'csect','csect','csect','csect','csect',
'csect','csect','csect',
'','','','','','','','','','','','','','',
'',
'',
'',
'',
'',
'',
'',
'',
'',
'',
'',
'',
'',
'',
'',
'',
'',
'',
'',
'',
'',
'',
'',
'',
'',
'',
'',
'',
'',
'',
'',
'',
'',
'',
'',
'',
'',
'',
'',
''
);
type
t64bitarray = array[0..7] of byte;
t32bitarray = array[0..3] of byte;
function ReplaceForbiddenChars(var s: string):Boolean;
{Returns wheater a replacement has occurred.}
var
i:Integer;
{The dollar sign is not allowed in MPW PPCAsm}
begin
ReplaceForbiddenChars:=false;
for i:=1 to Length(s) do
if s[i]='$' then
begin
s[i]:='s';
ReplaceForbiddenChars:=true;
end;
end;
{*** From here is copyed from agppcgas.pp, except where marked with CHANGED.
Perhaps put in a third common file. ***}
function getreferencestring(var ref : treference) : string;
var
s : string;
begin
with ref do
begin
if (refaddr <> addr_no) then
InternalError(2002110301)
else if ((offset < -32768) or (offset > 32767)) then
InternalError(19991);
if assigned(symbol) then
begin
s:= symbol.name;
ReplaceForbiddenChars(s);
{if symbol.typ = AT_FUNCTION then
;}
s:= s+'[TC]' {ref to TOC entry }
end
else
s:= '';
if offset<0 then
s:=s+tostr(offset)
else
if (offset>0) then
begin
if assigned(symbol) then
s:=s+'+'+tostr(offset)
else
s:=s+tostr(offset);
end;
if (index=NR_NO) and (base<>NR_NO) then
begin
if offset=0 then
if not assigned(symbol) then
s:=s+'0';
s:=s+'('+gas_regname(base)+')';
end
else if (index<>NR_NO) and (base<>NR_NO) and (offset=0) then
begin
if (offset=0) then
s:=s+gas_regname(base)+','+gas_regname(index)
else
internalerror(19992);
end
else if (base=NR_NO) and (offset=0) then
begin
{Temporary fix for inline asm, where a local var is referenced.}
//if assigned(symbol) then
// s:= s+'(rtoc)';
end;
end;
getreferencestring:=s;
end;
function getopstr_jmp(const o:toper) : string;
var
hs : string;
begin
case o.typ of
top_reg :
getopstr_jmp:=gas_regname(o.reg);
{ no top_ref jumping for powerpc }
top_const :
getopstr_jmp:=tostr(o.val);
top_ref :
begin
if o.ref^.refaddr=addr_full then
begin
hs:=o.ref^.symbol.name;
ReplaceForbiddenChars(hs);
case o.ref^.symbol.typ of
AT_FUNCTION:
begin
if hs[1] <> '@' then {if not local label}
if use_PR then
hs:= '.'+hs+'[PR]'
else
hs:= '.'+hs
end
else
;
end;
if o.ref^.offset>0 then
hs:=hs+'+'+tostr(o.ref^.offset)
else
if o.ref^.offset<0 then
hs:=hs+tostr(o.ref^.offset);
getopstr_jmp:=hs;
end
else
internalerror(200402263);
end;
top_none:
getopstr_jmp:='';
else
internalerror(2002070603);
end;
end;
function getopstr(const o:toper) : string;
var
hs : string;
begin
case o.typ of
top_reg:
getopstr:=gas_regname(o.reg);
top_const:
getopstr:=tostr(longint(o.val));
top_ref:
if o.ref^.refaddr=addr_no then
getopstr:=getreferencestring(o.ref^)
else if o.ref^.refaddr=addr_pic_no_got then
begin
if (o.ref^.base<>NR_RTOC) or
(o.ref^.index<>NR_NO) or
(o.ref^.offset<>0) or
not assigned(o.ref^.symbol) then
internalerror(2011122701);
hs:=o.ref^.symbol.name;
ReplaceForbiddenChars(hs);
hs:=hs+'[TC](RTOC)';
getopstr:=hs;
end
else
begin
hs:=o.ref^.symbol.name;
ReplaceForbiddenChars(hs);
if o.ref^.offset>0 then
hs:=hs+'+'+tostr(o.ref^.offset)
else
if o.ref^.offset<0 then
hs:=hs+tostr(o.ref^.offset);
getopstr:=hs;
end;
else
internalerror(2002070604);
end;
end;
type
topstr = string[4];
function branchmode(o: tasmop): topstr;
var tempstr: topstr;
begin
tempstr := '';
case o of
A_BCCTR,A_BCCTRL: tempstr := 'ctr';
A_BCLR,A_BCLRL: tempstr := 'lr';
else
;
end;
case o of
A_BL,A_BLA,A_BCL,A_BCLA,A_BCCTRL,A_BCLRL: tempstr := tempstr+'l';
else
;
end;
case o of
A_BA,A_BLA,A_BCA,A_BCLA: tempstr:=tempstr+'a';
else
;
end;
branchmode := tempstr;
end;
function cond2str(op: tasmop; c: tasmcond): string;
{ note: no checking is performed whether the given combination of }
{ conditions is valid }
var
tempstr: string;
begin
tempstr:=#9;
case c.simple of
false:
begin
cond2str := tempstr+gas_op2str[op];
case c.dirhint of
DH_None:;
DH_Minus:
cond2str:=cond2str+'-';
DH_Plus:
cond2str:=cond2str+'+';
else
internalerror(2003112901);
end;
cond2str:=cond2str+#9+tostr(c.bo)+','+tostr(c.bi)+',';
end;
true:
if (op >= A_B) and (op <= A_BCLRL) then
case c.cond of
{ unconditional branch }
C_NONE:
cond2str := tempstr+gas_op2str[op];
{ bdnzt etc }
else
begin
tempstr := tempstr+'b'+asmcondflag2str[c.cond]+
branchmode(op);
case c.dirhint of
DH_None:
tempstr:=tempstr+#9;
DH_Minus:
tempstr:=tempstr+('-'+#9);
DH_Plus:
tempstr:=tempstr+('+'+#9);
else
internalerror(2003112901);
end;
case c.cond of
C_LT..C_NU:
cond2str := tempstr+gas_regname(newreg(R_SPECIALREGISTER,c.cr,R_SUBWHOLE));
C_T,C_F,C_DNZT,C_DNZF,C_DZT,C_DZF:
cond2str := tempstr+tostr(c.crbit);
else
cond2str := tempstr;
end;
end;
end
{ we have a trap instruction }
else
begin
internalerror(2002070601);
{ not yet implemented !!!!!!!!!!!!!!!!!!!!! }
{ case tempstr := 'tw';}
end;
end;
end;
procedure TPPCMPWAssembler.WriteInstruction(hp : tai);
var op: TAsmOp;
s: string;
i: byte;
sep: string[3];
begin
op:=taicpu(hp).opcode;
if is_calljmp(op) then
begin
{ direct BO/BI in op[0] and op[1] not supported, put them in condition! }
case op of
A_B,A_BA:
s:=#9+gas_op2str[op]+#9;
A_BCTR,A_BCTRL,A_BLR,A_BLRL:
s:=#9+gas_op2str[op];
A_BL,A_BLA:
s:=#9+gas_op2str[op]+#9;
else
begin
s:=cond2str(op,taicpu(hp).condition);
if (s[length(s)] <> #9) and
(taicpu(hp).ops>0) then
s := s + ',';
end;
end;
if (taicpu(hp).ops>0) and (taicpu(hp).oper[0]^.typ<>top_none) then
begin
{ first write the current contents of s, because the symbol }
{ may be 255 characters }
writer.AsmWrite(s);
s:=getopstr_jmp(taicpu(hp).oper[0]^);
end;
end
else
{ process operands }
begin
s:=#9+gas_op2str[op];
if taicpu(hp).ops<>0 then
begin
sep:=#9;
for i:=0 to taicpu(hp).ops-1 do
begin
s:=s+sep+getopstr(taicpu(hp).oper[i]^);
sep:=',';
end;
end;
end;
writer.AsmWriteLn(s);
end;
{*** Until here is copyed from agppcgas.pp. ***}
function single2str(d : single) : string;
var
hs : string;
p : byte;
begin
str(d,hs);
{ nasm expects a lowercase e }
p:=pos('E',hs);
if p>0 then
hs[p]:='e';
p:=pos('+',hs);
if p>0 then
delete(hs,p,1);
single2str:=lower(hs);
end;
function double2str(d : double) : string;
var
hs : string;
p : byte;
begin
str(d,hs);
{ nasm expects a lowercase e }
p:=pos('E',hs);
if p>0 then
hs[p]:='e';
p:=pos('+',hs);
if p>0 then
delete(hs,p,1);
double2str:=lower(hs);
end;
{ convert floating point values }
{ to correct endian }
procedure swap64bitarray(var t: t64bitarray);
var
b: byte;
begin
b:= t[7];
t[7] := t[0];
t[0] := b;
b := t[6];
t[6] := t[1];
t[1] := b;
b:= t[5];
t[5] := t[2];
t[2] := b;
b:= t[4];
t[4] := t[3];
t[3] := b;
end;
procedure swap32bitarray(var t: t32bitarray);
var
b: byte;
begin
b:= t[1];
t[1]:= t[2];
t[2]:= b;
b:= t[0];
t[0]:= t[3];
t[3]:= b;
end;
Function PadTabs(const p:string;addch:char):string;
var
s : string;
i : longint;
begin
i:=length(p);
if addch<>#0 then
begin
inc(i);
s:=p+addch;
end
else
s:=p;
if i<8 then
PadTabs:=s+#9#9
else
PadTabs:=s+#9;
end;
{****************************************************************************
PowerPC MPW Assembler
****************************************************************************}
procedure TPPCMPWAssembler.WriteProcedureHeader(var hp:tai);
{Returns the current hp where the caller should continue from}
{For multiple entry procedures, only the last is exported as xxx[PR]
(if use_PR is set) }
procedure WriteExportHeader(hp:tai);
var
s: string;
replaced: boolean;
begin
s:= tai_symbol(hp).sym.name;
replaced:= ReplaceForbiddenChars(s);
if not use_PR then
begin
writer.AsmWrite(#9'export'#9'.');
writer.AsmWrite(s);
if replaced then
begin
writer.AsmWrite(' => ''.');
writer.AsmWrite(tai_symbol(hp).sym.name);
writer.AsmWrite('''');
end;
writer.AsmLn;
end;
writer.AsmWrite(#9'export'#9);
writer.AsmWrite(s);
writer.AsmWrite('[DS]');
if replaced then
begin
writer.AsmWrite(' => ''');
writer.AsmWrite(tai_symbol(hp).sym.name);
writer.AsmWrite('[DS]''');
end;
writer.AsmLn;
{Entry in transition vector: }
writer.AsmWrite(#9'csect'#9); writer.AsmWrite(s); writer.AsmWriteLn('[DS]');
writer.AsmWrite(#9'dc.l'#9'.'); writer.AsmWriteLn(s);
writer.AsmWriteln(#9'dc.l'#9'TOC[tc0]');
{Entry in TOC: }
writer.AsmWriteLn(#9'toc');
writer.AsmWrite(#9'tc'#9);
writer.AsmWrite(s); writer.AsmWrite('[TC],');
writer.AsmWrite(s); writer.AsmWriteln('[DS]');
end;
function GetAdjacentTaiSymbol(var hp:tai):Boolean;
begin
GetAdjacentTaiSymbol:= false;
while assigned(hp.next) do
case tai(hp.next).typ of
ait_symbol:
begin
hp:=tai(hp.next);
GetAdjacentTaiSymbol:= true;
Break;
end;
ait_function_name:
hp:=tai(hp.next);
else
begin
//writer.AsmWriteln(' ;#*#*# ' + tostr(Ord(tai(hp.next).typ)));
Break;
end;
end;
end;
var
first,last: tai;
s: string;
replaced: boolean;
begin
s:= tai_symbol(hp).sym.name;
{Write all headers}
first:= hp;
repeat
WriteExportHeader(hp);
last:= hp;
until not GetAdjacentTaiSymbol(hp);
{Start the section of the body of the proc: }
s:= tai_symbol(last).sym.name;
replaced:= ReplaceForbiddenChars(s);
if use_PR then
begin
writer.AsmWrite(#9'export'#9'.'); writer.AsmWrite(s); writer.AsmWrite('[PR]');
if replaced then
begin
writer.AsmWrite(' => ''.');
writer.AsmWrite(tai_symbol(last).sym.name);
writer.AsmWrite('[PR]''');
end;
writer.AsmLn;
end;
{Starts the section: }
writer.AsmWrite(#9'csect'#9'.');
writer.AsmWrite(s);
writer.AsmWriteLn('[PR]');
{Info for the debugger: }
writer.AsmWrite(#9'function'#9'.');
writer.AsmWrite(s);
writer.AsmWriteLn('[PR]');
{Write all labels: }
hp:= first;
repeat
s:= tai_symbol(hp).sym.name;
ReplaceForbiddenChars(s);
writer.AsmWrite('.'); writer.AsmWrite(s); writer.AsmWriteLn(':');
until not GetAdjacentTaiSymbol(hp);
end;
procedure TPPCMPWAssembler.WriteDataHeader(var s:string; isExported, isConst:boolean);
// Returns in s the changed string
var
sym: string;
replaced: boolean;
begin
sym:= s;
replaced:= ReplaceForbiddenChars(s);
if isExported then
begin
writer.AsmWrite(#9'export'#9);
writer.AsmWrite(s);
if isConst then
writer.AsmWrite(const_storage_class)
else
writer.AsmWrite(var_storage_class);
if replaced then
begin
writer.AsmWrite(' => ''');
writer.AsmWrite(sym);
writer.AsmWrite('''');
end;
writer.AsmLn;
end;
if not macos_direct_globals then
begin
{The actual section is here interrupted, by inserting a "tc" entry}
writer.AsmWriteLn(#9'toc');
writer.AsmWrite(#9'tc'#9);
writer.AsmWrite(s);
writer.AsmWrite('[TC], ');
writer.AsmWrite(s);
if isConst then
writer.AsmWrite(const_storage_class)
else
writer.AsmWrite(var_storage_class);
writer.AsmLn;
{The interrupted section is here continued.}
writer.AsmWrite(#9'csect'#9);
writer.AsmWriteln(cur_CSECT_name+cur_CSECT_class);
writer.AsmWrite(PadTabs(s+':',#0));
end
else
begin
writer.AsmWrite(#9'csect'#9);
writer.AsmWrite(s);
writer.AsmWrite('[TC]');
end;
writer.AsmLn;
end;
const
ait_const2str:array[aitconst_32bit..aitconst_8bit] of string[8]=
(#9'dc.l'#9,#9'dc.w'#9,#9'dc.b'#9);
procedure TPPCMPWAssembler.WriteTree(p:TAsmList);
var
s : string;
hp : tai;
counter,
lines,
InlineLevel : longint;
i,j,l : longint;
consttype : taiconst_type;
do_line,DoNotSplitLine,
quoted : boolean;
begin
if not assigned(p) then
exit;
InlineLevel:=0;
{ lineinfo is only needed for al_procedures (PFV) }
do_line:=((cs_asm_source in current_settings.globalswitches) or
(cs_lineinfo in current_settings.moduleswitches))
and (p=current_asmdata.asmlists[al_procedures]);
DoNotSplitLine:=false;
hp:=tai(p.first);
while assigned(hp) do
begin
prefetch(pointer(hp.next)^);
if not(hp.typ in SkipLineInfo) then
begin
current_filepos:=tailineinfo(hp).fileinfo;
{ no line info for inlined code }
if do_line and (inlinelevel=0) and not DoNotSplitLine then
WriteSourceLine(hp as tailineinfo);
end;
DoNotSplitLine:=false;
case hp.typ of
ait_comment:
begin
writer.AsmWrite(asminfo^.comment);
writer.AsmWritePChar(tai_comment(hp).str);
writer.AsmLn;
end;
ait_regalloc,
ait_tempalloc:
;
ait_section:
begin
{if LastSecType<>sec_none then
writer.AsmWriteLn('_'+asminfo^.secnames[LastSecType]+#9#9'ENDS');}
if tai_section(hp).sectype<>sec_none then
begin
if tai_section(hp).sectype in [sec_data,sec_rodata,sec_bss] then
cur_CSECT_class:= '[RW]'
else if tai_section(hp).sectype in [sec_code] then
cur_CSECT_class:= ''
else
cur_CSECT_class:= '[RO]';
s:= tai_section(hp).name^;
if s = '' then
InternalError(2004101001); {Nameless sections should not occur on MPW}
ReplaceForbiddenChars(s);
cur_CSECT_name:= s;
writer.AsmLn;
writer.AsmWriteLn(#9+secnames[tai_section(hp).sectype]+' '+cur_CSECT_name+cur_CSECT_class);
end;
LastSecType:=tai_section(hp).sectype;
end;
ait_align:
begin
case tai_align(hp).aligntype of
1:writer.AsmWriteLn(#9'align 0');
2:writer.AsmWriteLn(#9'align 1');
4:writer.AsmWriteLn(#9'align 2');
otherwise internalerror(2002110302);
end;
end;
ait_datablock: {Storage for global variables.}
begin
s:= tai_datablock(hp).sym.name;
WriteDataHeader(s, tai_datablock(hp).is_global, false);
if not macos_direct_globals then
begin
writer.AsmWriteLn(#9'ds.b '+tostr(tai_datablock(hp).size));
end
else
begin
writer.AsmWriteLn(PadTabs(s+':',#0)+'ds.b '+tostr(tai_datablock(hp).size));
{TODO: ? PadTabs(s,#0) }
end;
end;
ait_const:
begin
consttype:=tai_const(hp).consttype;
case consttype of
aitconst_128bit:
begin
internalerror(200404291);
end;
aitconst_64bit:
begin
if assigned(tai_const(hp).sym) then
internalerror(200404292);
writer.AsmWrite(ait_const2str[aitconst_32bit]);
if target_info.endian = endian_little then
begin
writer.AsmWrite(tostr(longint(lo(tai_const(hp).value))));
writer.AsmWrite(',');
writer.AsmWrite(tostr(longint(hi(tai_const(hp).value))));
end
else
begin
writer.AsmWrite(tostr(longint(hi(tai_const(hp).value))));
writer.AsmWrite(',');
writer.AsmWrite(tostr(longint(lo(tai_const(hp).value))));
end;
writer.AsmLn;
end;
aitconst_uleb128bit,
aitconst_sleb128bit,
aitconst_32bit,
aitconst_16bit,
aitconst_8bit,
aitconst_rva_symbol :
begin
writer.AsmWrite(ait_const2str[consttype]);
l:=0;
repeat
if assigned(tai_const(hp).sym) then
begin
if assigned(tai_const(hp).endsym) then
begin
if (tai_const(hp).endsym.typ = AT_FUNCTION) and use_PR then
writer.AsmWrite('.');
s:=tai_const(hp).endsym.name;
ReplaceForbiddenChars(s);
writer.AsmWrite(s);
inc(l,length(s));
if tai_const(hp).endsym.typ = AT_FUNCTION then
begin
if use_PR then
writer.AsmWrite('[PR]')
else
writer.AsmWrite('[DS]');
end;
writer.AsmWrite('-');
inc(l,5); {Approx 5 extra, no need to be exactly}
end;
if (tai_const(hp).sym.typ = AT_FUNCTION) and use_PR then
writer.AsmWrite('.');
s:= tai_const(hp).sym.name;
ReplaceForbiddenChars(s);
writer.AsmWrite(s);
inc(l,length(s));
if tai_const(hp).sym.typ = AT_FUNCTION then
begin
if use_PR then
writer.AsmWrite('[PR]')
else
writer.AsmWrite('[DS]');
end;
inc(l,5); {Approx 5 extra, no need to be exactly}
if tai_const(hp).value > 0 then
s:= '+'+tostr(tai_const(hp).value)
else if tai_const(hp).value < 0 then
s:= '-'+tostr(tai_const(hp).value)
else
s:= '';
if s<>'' then
begin
writer.AsmWrite(s);
inc(l,length(s));
end;
end
else
begin
s:= tostr(tai_const(hp).value);
writer.AsmWrite(s);
inc(l,length(s));
end;
if (l>line_length) or
(hp.next=nil) or
(tai(hp.next).typ<>ait_const) or
(tai_const(hp.next).consttype<>consttype) then
break;
hp:=tai(hp.next);
writer.AsmWrite(',');
until false;
writer.AsmLn;
end;
else
internalerror(2019050950);
end;
end;
ait_realconst:
begin
WriteRealConstAsBytes(tai_realconst(hp),#9'dc.b'#9,do_line);
end;
ait_string:
begin
{NOTE When a single quote char is encountered, it is
replaced with a numeric ascii value. It could also
have been replaced with the escape seq of double quotes.
Backslash seems to be used as an escape char, although
this is not mentioned in the PPCAsm documentation.}
counter := 0;
lines := tai_string(hp).len div line_length;
{ separate lines in different parts }
if tai_string(hp).len > 0 then
begin
for j := 0 to lines-1 do
begin
writer.AsmWrite(#9'dc.b'#9);
quoted:=false;
for i:=counter to counter+line_length-1 do
begin
{ it is an ascii character. }
if (ord(tai_string(hp).str[i])>31) and
(ord(tai_string(hp).str[i])<128) and
(tai_string(hp).str[i]<>'''') and
(tai_string(hp).str[i]<>'\') then
begin
if not(quoted) then
begin
if i>counter then
writer.AsmWrite(',');
writer.AsmWrite('''');
end;
writer.AsmWrite(tai_string(hp).str[i]);
quoted:=true;
end { if > 31 and < 128 and ord('"') }
else
begin
if quoted then
writer.AsmWrite('''');
if i>counter then
writer.AsmWrite(',');
quoted:=false;
writer.AsmWrite(tostr(ord(tai_string(hp).str[i])));
end;
end; { end for i:=0 to... }
if quoted then writer.AsmWrite('''');
writer.AsmLn;
counter := counter+line_length;
end; { end for j:=0 ... }
{ do last line of lines }
if counter < tai_string(hp).len then
writer.AsmWrite(#9'dc.b'#9);
quoted:=false;
for i:=counter to tai_string(hp).len-1 do
begin
{ it is an ascii character. }
if (ord(tai_string(hp).str[i])>31) and
(ord(tai_string(hp).str[i])<128) and
(tai_string(hp).str[i]<>'''') and
(tai_string(hp).str[i]<>'\') then
begin
if not(quoted) then
begin
if i>counter then
writer.AsmWrite(',');
writer.AsmWrite('''');
end;
writer.AsmWrite(tai_string(hp).str[i]);
quoted:=true;
end { if > 31 and < 128 and " }
else
begin
if quoted then
writer.AsmWrite('''');
if i>counter then
writer.AsmWrite(',');
quoted:=false;
writer.AsmWrite(tostr(ord(tai_string(hp).str[i])));
end;
end; { end for i:=0 to... }
if quoted then
writer.AsmWrite('''');
end;
writer.AsmLn;
end;
ait_label:
begin
if tai_label(hp).labsym.is_used then
begin
s:= tai_label(hp).labsym.name;
if s[1] = '@' then
begin
ReplaceForbiddenChars(s);
//Local labels:
writer.AsmWriteLn(s+':')
end
else
begin
//Procedure entry points:
if not macos_direct_globals then
begin
WriteDataHeader(s, tai_label(hp).labsym.bind in [AB_GLOBAL,AB_PRIVATE_EXTERN], true);
end
else
begin
ReplaceForbiddenChars(s);
writer.AsmWrite(#9'csect'#9); writer.AsmWrite(s);
writer.AsmWriteLn('[TC]');
writer.AsmWriteLn(PadTabs(s+':',#0));
end;
end;
end;
end;
ait_symbol:
begin
if tai_symbol(hp).sym.typ=AT_FUNCTION then
WriteProcedureHeader(hp)
else if tai_symbol(hp).sym.typ=AT_DATA then
begin
s:= tai_symbol(hp).sym.name;
WriteDataHeader(s, tai_symbol(hp).is_global, true);
if macos_direct_globals then
begin
writer.AsmWrite(s);
writer.AsmWriteLn(':');
end;
end
else
InternalError(2003071301);
end;
ait_symbol_end:
;
ait_instruction:
WriteInstruction(hp);
ait_stab,
ait_force_line,
ait_function_name : ;
ait_cutobject :
begin
InternalError(2004101101); {Smart linking is done transparently by the MPW linker.}
end;
ait_marker :
begin
if tai_marker(hp).kind=mark_NoLineInfoStart then
inc(InlineLevel)
else if tai_marker(hp).kind=mark_NoLineInfoEnd then
dec(InlineLevel);
end;
ait_directive :
if tai_directive(hp).directive=asd_cpu then
begin
writer.AsmWrite(asminfo^.comment+' CPU ');
if tai_directive(hp).name<>'' then
writer.AsmWrite(tai_directive(hp).name);
writer.AsmLn;
end
else
internalerror(2016022601);
else
internalerror(2002110303);
end;
hp:=tai(hp.next);
end;
end;
var
currentasmlist : TExternalAssembler;
procedure writeexternal(p:tasmsymbol);
var
s:string;
replaced: boolean;
begin
if tasmsymbol(p).bind in [AB_EXTERNAL,AB_EXTERNAL_INDIRECT] then
begin
//Writeln('ZZZ ',p.name,' ',p.typ);
s:= p.name;
replaced:= ReplaceForbiddenChars(s);
with currentasmlist do
case tasmsymbol(p).typ of
AT_FUNCTION:
begin
writer.AsmWrite(#9'import'#9'.');
writer.AsmWrite(s);
if use_PR then
writer.AsmWrite('[PR]');
if replaced then
begin
writer.AsmWrite(' <= ''.');
writer.AsmWrite(p.name);
if use_PR then
writer.AsmWrite('[PR]''')
else
writer.AsmWrite('''');
end;
writer.AsmLn;
writer.AsmWrite(#9'import'#9);
writer.AsmWrite(s);
writer.AsmWrite('[DS]');
if replaced then
begin
writer.AsmWrite(' <= ''');
writer.AsmWrite(p.name);
writer.AsmWrite('[DS]''');
end;
writer.AsmLn;
writer.AsmWriteLn(#9'toc');
writer.AsmWrite(#9'tc'#9);
writer.AsmWrite(s);
writer.AsmWrite('[TC],');
writer.AsmWrite(s);
writer.AsmWriteLn('[DS]');
end;
AT_DATA:
begin
writer.AsmWrite(#9'import'#9);
writer.AsmWrite(s);
writer.AsmWrite(var_storage_class);
if replaced then
begin
writer.AsmWrite(' <= ''');
writer.AsmWrite(p.name);
writer.AsmWrite('''');
end;
writer.AsmLn;
writer.AsmWriteLn(#9'toc');
writer.AsmWrite(#9'tc'#9);
writer.AsmWrite(s);
writer.AsmWrite('[TC],');
writer.AsmWrite(s);
writer.AsmWriteLn(var_storage_class);
end
else
InternalError(2003090901);
end;
end;
end;
procedure TPPCMPWAssembler.WriteExternals;
var
i : longint;
begin
currentasmlist:=self;
// current_asmdata.asmsymboldict.foreach_static(@writeexternal,nil);
for i:=0 to current_asmdata.AsmSymbolDict.Count-1 do
begin
writeexternal(tasmsymbol(current_asmdata.AsmSymbolDict[i]));
end;
end;
function TPPCMPWAssembler.DoAssemble : boolean;
begin
DoAssemble:=Inherited DoAssemble;
end;
procedure TPPCMPWAssembler.WriteAsmFileHeader;
begin
writer.AsmWriteLn(#9'string asis'); {Interpret strings just to be the content between the quotes.}
writer.AsmWriteLn(#9'aligning off'); {We do our own aligning.}
writer.AsmLn;
end;
procedure TPPCMPWAssembler.WriteAsmList;
var
hal : tasmlisttype;
begin
{$ifdef EXTDEBUG}
if current_module.mainsource<>'' then
comment(v_info,'Start writing MPW-styled assembler output for '+current_module.mainsource);
{$endif}
WriteAsmFileHeader;
WriteExternals;
for hal:=low(TasmlistType) to high(TasmlistType) do
begin
writer.AsmWriteLn(asminfo^.comment+'Begin asmlist '+AsmListTypeStr[hal]);
writetree(current_asmdata.asmlists[hal]);
writer.AsmWriteLn(asminfo^.comment+'End asmlist '+AsmListTypeStr[hal]);
end;
writer.AsmWriteLn(#9'end');
writer.AsmLn;
{$ifdef EXTDEBUG}
if current_module.mainsource<>'' then
comment(v_info,'Done writing MPW-styled assembler output for '+current_module.mainsource);
{$endif EXTDEBUG}
end;
{*****************************************************************************
Initialize
*****************************************************************************}
const
as_powerpc_mpw_info : tasminfo =
(
id : as_powerpc_mpw;
idtxt : 'MPW';
asmbin : 'PPCAsm';
asmcmd : '-case on $ASM $EXTRAOPT -o $OBJ';
supported_targets : [system_powerpc_macos];
flags : [af_needar,af_smartlink_sections,af_labelprefix_only_inside_procedure];
labelprefix : '@';
comment : '; ';
dollarsign: 's';
);
initialization
RegisterAssembler(as_powerpc_mpw_info,TPPCMPWAssembler);
end.
|