-
Notifications
You must be signed in to change notification settings - Fork 11
/
Copy pathcc_core.c
3454 lines (3142 loc) · 120 KB
/
cc_core.c
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) 2016 Jeremiah Orians
* Copyright (C) 2018 Jan (janneke) Nieuwenhuizen <[email protected]>
* Copyright (C) 2020 deesix <[email protected]>
* Copyright (C) 2021 Andrius Štikonas <[email protected]>
* This file is part of M2-Planet.
*
* M2-Planet 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 3 of the License, or
* (at your option) any later version.
*
* M2-Planet 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 M2-Planet. If not, see <http://www.gnu.org/licenses/>.
*/
#include "cc.h"
#include "gcc_req.h"
#include <stdint.h>
/* Global lists */
struct token_list* global_symbol_list;
struct token_list* global_function_list;
/* Core lists for this file */
struct token_list* function;
/* What we are currently working on */
struct type* current_target;
char* break_target_head;
char* break_target_func;
char* break_target_num;
char* continue_target_head;
struct token_list* break_frame;
int current_count;
int Address_of;
/* Imported functions */
char* int2str(int x, int base, int signed_p);
int strtoint(char *a);
char* parse_string(char* string);
int escape_lookup(char* c);
void require(int bool, char* error);
struct token_list* reverse_list(struct token_list* head);
struct type *mirror_type(struct type *source);
struct type* add_primitive(struct type* a);
void global_variable_definition(struct type*);
void global_assignment(void);
void global_static_array(struct type*, struct token_list*);
struct token_list* emit(char *s, struct token_list* head)
{
struct token_list* t = calloc(1, sizeof(struct token_list));
require(NULL != t, "Exhausted memory while generating token to emit\n");
t->next = head;
t->s = s;
return t;
}
void emit_out(char* s)
{
output_list = emit(s, output_list);
}
struct token_list* uniqueID(char* s, struct token_list* l, char* num)
{
l = emit("\n", emit(num, emit("_", emit(s, l))));
return l;
}
void uniqueID_out(char* s, char* num)
{
output_list = uniqueID(s, output_list, num);
}
struct token_list* sym_declare(char *s, struct type* t, struct token_list* list)
{
struct token_list* a = calloc(1, sizeof(struct token_list));
require(NULL != a, "Exhausted memory while attempting to declare a symbol\n");
a->next = list;
a->s = s;
a->type = t;
return a;
}
struct token_list* sym_lookup(char *s, struct token_list* symbol_list)
{
struct token_list* i;
for(i = symbol_list; NULL != i; i = i->next)
{
if(match(i->s, s)) return i;
}
return NULL;
}
void line_error_token(struct token_list *token)
{
if(NULL == token)
{
fputs("EOF reached inside of line_error\n", stderr);
fputs("problem at end of file\n", stderr);
return;
}
fputs(token->filename, stderr);
fputs(":", stderr);
fputs(int2str(token->linenumber, 10, TRUE), stderr);
fputs(":", stderr);
}
void line_error(void)
{
line_error_token(global_token);
}
void require_match(char* message, char* required)
{
if(NULL == global_token)
{
line_error();
fputs("EOF reached inside of require match\n", stderr);
fputs("problem at end of file\n", stderr);
fputs(message, stderr);
exit(EXIT_FAILURE);
}
if(!match(global_token->s, required))
{
line_error();
fputs(message, stderr);
exit(EXIT_FAILURE);
}
global_token = global_token->next;
}
void maybe_bootstrap_error(char* feature)
{
if (BOOTSTRAP_MODE)
{
line_error();
fputs(feature, stderr);
fputs(" is not supported in --bootstrap-mode\n", stderr);
exit(EXIT_FAILURE);
}
}
void expression(void);
void function_call(char* s, int bool)
{
require_match("ERROR in process_expression_list\nNo ( was found\n", "(");
require(NULL != global_token, "Improper function call\n");
int passed = 0;
if((KNIGHT_POSIX == Architecture) || (KNIGHT_NATIVE == Architecture))
{
emit_out("PUSHR R13 R15\t# Prevent overwriting in recursion\n");
emit_out("PUSHR R14 R15\t# Protect the old base pointer\n");
emit_out("COPY R13 R15\t# Copy new base pointer\n");
}
else if(X86 == Architecture)
{
emit_out("push_edi\t# Prevent overwriting in recursion\n");
emit_out("push_ebp\t# Protect the old base pointer\n");
emit_out("mov_edi,esp\t# Copy new base pointer\n");
}
else if(AMD64 == Architecture)
{
emit_out("push_rdi\t# Prevent overwriting in recursion\n");
emit_out("push_rbp\t# Protect the old base pointer\n");
emit_out("mov_rdi,rsp\t# Copy new base pointer\n");
}
else if(ARMV7L == Architecture)
{
emit_out("{R11} PUSH_ALWAYS\t# Prevent overwriting in recursion\n");
emit_out("{BP} PUSH_ALWAYS\t# Protect the old base pointer\n");
emit_out("'0' SP R11 NO_SHIFT MOVE_ALWAYS\t# Copy new base pointer\n");
}
else if(AARCH64 == Architecture)
{
emit_out("PUSH_X16\t# Protect a tmp register we're going to use\n");
emit_out("PUSH_LR\t# Protect the old return pointer (link)\n");
emit_out("PUSH_BP\t# Protect the old base pointer\n");
emit_out("SET_X16_FROM_SP\t# The base pointer to-be\n");
}
else if(RISCV32 == Architecture)
{
emit_out("rd_sp rs1_sp !-12 addi\t# Allocate stack\n");
emit_out("rs1_sp rs2_ra @4 sw\t# Protect the old return pointer\n");
emit_out("rs1_sp rs2_fp sw\t# Protect the old frame pointer\n");
emit_out("rs1_sp rs2_tp @8 sw\t# Protect temp register we are going to use\n");
emit_out("rd_tp rs1_sp mv\t# The base pointer to-be\n");
}
else if(RISCV64 == Architecture)
{
emit_out("rd_sp rs1_sp !-24 addi\t# Allocate stack\n");
emit_out("rs1_sp rs2_ra @8 sd\t# Protect the old return pointer\n");
emit_out("rs1_sp rs2_fp sd\t# Protect the old frame pointer\n");
emit_out("rs1_sp rs2_tp @16 sd\t# Protect temp register we are going to use\n");
emit_out("rd_tp rs1_sp mv\t# The base pointer to-be\n");
}
if(global_token->s[0] != ')')
{
expression();
require(NULL != global_token, "incomplete function call, received EOF instead of )\n");
if((KNIGHT_POSIX == Architecture) || (KNIGHT_NATIVE == Architecture)) emit_out("PUSHR R0 R15\t#_process_expression1\n");
else if(X86 == Architecture) emit_out("push_eax\t#_process_expression1\n");
else if(AMD64 == Architecture) emit_out("push_rax\t#_process_expression1\n");
else if(ARMV7L == Architecture) emit_out("{R0} PUSH_ALWAYS\t#_process_expression1\n");
else if(AARCH64 == Architecture) emit_out("PUSH_X0\t#_process_expression1\n");
else if(RISCV32 == Architecture) emit_out("rd_sp rs1_sp !-4 addi\nrs1_sp rs2_a0 sw\t#_process_expression1\n");
else if(RISCV64 == Architecture) emit_out("rd_sp rs1_sp !-8 addi\nrs1_sp rs2_a0 sd\t#_process_expression1\n");
passed = 1;
while(global_token->s[0] == ',')
{
global_token = global_token->next;
require(NULL != global_token, "incomplete function call, received EOF instead of argument\n");
expression();
if((KNIGHT_POSIX == Architecture) || (KNIGHT_NATIVE == Architecture)) emit_out("PUSHR R0 R15\t#_process_expression2\n");
else if(X86 == Architecture) emit_out("push_eax\t#_process_expression2\n");
else if(AMD64 == Architecture) emit_out("push_rax\t#_process_expression2\n");
else if(ARMV7L == Architecture) emit_out("{R0} PUSH_ALWAYS\t#_process_expression2\n");
else if(AARCH64 == Architecture) emit_out("PUSH_X0\t#_process_expression2\n");
else if(RISCV32 == Architecture) emit_out("rd_sp rs1_sp !-4 addi\nrs1_sp rs2_a0 sw\t#_process_expression2\n");
else if(RISCV64 == Architecture) emit_out("rd_sp rs1_sp !-8 addi\nrs1_sp rs2_a0 sd\t#_process_expression2\n");
passed = passed + 1;
}
}
require_match("ERROR in process_expression_list\nNo ) was found\n", ")");
if(TRUE == bool)
{
if((KNIGHT_POSIX == Architecture) || (KNIGHT_NATIVE == Architecture))
{
emit_out("LOAD R0 R14 ");
emit_out(s);
emit_out("\nMOVE R14 R13\n");
emit_out("CALL R0 R15\n");
}
else if(X86 == Architecture)
{
emit_out("lea_eax,[ebp+DWORD] %");
emit_out(s);
emit_out("\nmov_eax,[eax]\n");
emit_out("mov_ebp,edi\n");
emit_out("call_eax\n");
}
else if(AMD64 == Architecture)
{
emit_out("lea_rax,[rbp+DWORD] %");
emit_out(s);
emit_out("\nmov_rax,[rax]\n");
emit_out("mov_rbp,rdi\n");
emit_out("call_rax\n");
}
else if(ARMV7L == Architecture)
{
emit_out("!");
emit_out(s);
emit_out(" R0 SUB BP ARITH_ALWAYS\n");
emit_out("!0 R0 LOAD32 R0 MEMORY\n");
emit_out("{LR} PUSH_ALWAYS\t# Protect the old link register\n");
emit_out("'0' R11 BP NO_SHIFT MOVE_ALWAYS\n");
emit_out("'3' R0 CALL_REG_ALWAYS\n");
emit_out("{LR} POP_ALWAYS\t# Prevent overwrite\n");
}
else if(AARCH64 == Architecture)
{
emit_out("SET_X0_FROM_BP\n");
emit_out("LOAD_W1_AHEAD\nSKIP_32_DATA\n%");
emit_out(s);
emit_out("\nSUB_X0_X0_X1\n");
emit_out("DEREF_X0\n");
emit_out("SET_BP_FROM_X16\n");
emit_out("SET_X16_FROM_X0\n");
emit_out("BLR_X16\n");
}
else if(RISCV32 == Architecture)
{
emit_out("rd_a0 rs1_fp !");
emit_out(s);
emit_out(" addi\n");
emit_out("rd_a0 rs1_a0 lw\n");
emit_out("rd_fp rs1_tp mv\n");
emit_out("rd_ra rs1_a0 jalr\n");
}
else if(RISCV64 == Architecture)
{
emit_out("rd_a0 rs1_fp !");
emit_out(s);
emit_out(" addi\n");
emit_out("rd_a0 rs1_a0 ld\n");
emit_out("rd_fp rs1_tp mv\n");
emit_out("rd_ra rs1_a0 jalr\n");
}
}
else
{
if((KNIGHT_NATIVE == Architecture) || (KNIGHT_POSIX == Architecture))
{
emit_out("MOVE R14 R13\n");
emit_out("LOADR R0 4\nJUMP 4\n&FUNCTION_");
emit_out(s);
emit_out("\nCALL R0 R15\n");
}
else if(X86 == Architecture)
{
emit_out("mov_ebp,edi\n");
emit_out("call %FUNCTION_");
emit_out(s);
emit_out("\n");
}
else if(AMD64 == Architecture)
{
emit_out("mov_rbp,rdi\n");
emit_out("call %FUNCTION_");
emit_out(s);
emit_out("\n");
}
else if(ARMV7L == Architecture)
{
emit_out("{LR} PUSH_ALWAYS\t# Protect the old link register\n");
emit_out("'0' R11 BP NO_SHIFT MOVE_ALWAYS\n");
emit_out("^~FUNCTION_");
emit_out(s);
emit_out(" CALL_ALWAYS\n");
emit_out("{LR} POP_ALWAYS\t# Restore the old link register\n");
}
else if(AARCH64 == Architecture)
{
emit_out("SET_BP_FROM_X16\n");
emit_out("LOAD_W16_AHEAD\nSKIP_32_DATA\n&FUNCTION_");
emit_out(s);
emit_out("\n");
emit_out("BLR_X16\n");
}
else if((RISCV32 == Architecture) || (RISCV64 == Architecture))
{
emit_out("rd_fp rs1_tp mv\n");
emit_out("rd_ra $FUNCTION_");
emit_out(s);
emit_out(" jal\n");
}
}
for(; passed > 0; passed = passed - 1)
{
if((KNIGHT_POSIX == Architecture) || (KNIGHT_NATIVE == Architecture)) emit_out("POPR R1 R15\t# _process_expression_locals\n");
else if(X86 == Architecture) emit_out("pop_ebx\t# _process_expression_locals\n");
else if(AMD64 == Architecture) emit_out("pop_rbx\t# _process_expression_locals\n");
else if(ARMV7L == Architecture) emit_out("{R1} POP_ALWAYS\t# _process_expression_locals\n");
else if(AARCH64 == Architecture) emit_out("POP_X1\t# _process_expression_locals\n");
else if(RISCV32 == Architecture) emit_out("rd_a1 rs1_sp lw\t# _process_expression_locals\nrd_sp rs1_sp !4 addi\n");
else if(RISCV64 == Architecture) emit_out("rd_a1 rs1_sp ld\t# _process_expression_locals\nrd_sp rs1_sp !8 addi\n");
}
if((KNIGHT_POSIX == Architecture) || (KNIGHT_NATIVE == Architecture))
{
emit_out("POPR R14 R15\t# Restore old base pointer\n");
emit_out("POPR R13 R15\t# Prevent overwrite\n");
}
else if(X86 == Architecture)
{
emit_out("pop_ebp\t# Restore old base pointer\n");
emit_out("pop_edi\t# Prevent overwrite\n");
}
else if(AMD64 == Architecture)
{
emit_out("pop_rbp\t# Restore old base pointer\n");
emit_out("pop_rdi\t# Prevent overwrite\n");
}
else if(ARMV7L == Architecture)
{
emit_out("{BP} POP_ALWAYS\t# Restore old base pointer\n");
emit_out("{R11} POP_ALWAYS\t# Prevent overwrite\n");
}
else if(AARCH64 == Architecture)
{
emit_out("POP_BP\t# Restore the old base pointer\n");
emit_out("POP_LR\t# Restore the old return pointer (link)\n");
emit_out("POP_X16\t# Restore a register we used as tmp\n");
}
else if(RISCV32 == Architecture)
{
emit_out("rd_fp rs1_sp lw\t# Restore old frame pointer\n");
emit_out("rd_tp rs1_sp !8 lw\t# Restore temp register\n");
emit_out("rd_ra rs1_sp !4 lw\t# Restore return address\n");
emit_out("rd_sp rs1_sp !12 addi\t# Deallocate stack\n");
}
else if(RISCV64 == Architecture)
{
emit_out("rd_fp rs1_sp ld\t# Restore old frame pointer\n");
emit_out("rd_tp rs1_sp !16 ld\t# Restore temp register\n");
emit_out("rd_ra rs1_sp !8 ld\t# Restore return address\n");
emit_out("rd_sp rs1_sp !24 addi\t# Deallocate stack\n");
}
}
void constant_load(char* s)
{
if((KNIGHT_POSIX == Architecture) || (KNIGHT_NATIVE == Architecture)) emit_out("LOADI R0 ");
else if(X86 == Architecture) emit_out("mov_eax, %");
else if(AMD64 == Architecture) emit_out("mov_rax, %");
else if(ARMV7L == Architecture) emit_out("!0 R0 LOAD32 R15 MEMORY\n~0 JUMP_ALWAYS\n%");
else if(AARCH64 == Architecture) emit_out("LOAD_W0_AHEAD\nSKIP_32_DATA\n%");
else if((RISCV32 == Architecture) || (RISCV64 == Architecture))
{
emit_out("rd_a0 ~");
emit_out(s);
emit_out(" lui\nrd_a0 rs1_a0 !");
}
emit_out(s);
if(RISCV32 == Architecture) emit_out(" addi\n");
else if(RISCV64 == Architecture) emit_out(" addiw\n");
emit_out("\n");
}
char* load_value_signed(unsigned size)
{
if(size == 1)
{
if((KNIGHT_POSIX == Architecture) || (KNIGHT_NATIVE == Architecture)) return "LOAD8 R0 R0 0\n";
else if(X86 == Architecture) return "movsx_eax,BYTE_PTR_[eax]\n";
else if(AMD64 == Architecture) return "movsx_rax,BYTE_PTR_[rax]\n";
else if(ARMV7L == Architecture) return "LOADS8 R0 LOAD R0 HALF_MEMORY\n";
else if(AARCH64 == Architecture) return "LDRSB_X0_[X0]\n";
else if((RISCV32 == Architecture) || (RISCV64 == Architecture)) return "rd_a0 rs1_a0 lb\n";
}
else if(size == 2)
{
if((KNIGHT_POSIX == Architecture) || (KNIGHT_NATIVE == Architecture)) return "LOAD16 R0 R0 0\n";
else if(X86 == Architecture) return "movsx_eax,WORD_PTR_[eax]\n";
else if(AMD64 == Architecture) return "movsx_rax,WORD_PTR_[rax]\n";
else if(ARMV7L == Architecture) return "LOADS16 R0 LOAD R0 HALF_MEMORY\n";
else if(AARCH64 == Architecture) return "LDRSH_X0_[X0]\n";
else if((RISCV32 == Architecture) || (RISCV64 == Architecture)) return "rd_a0 rs1_a0 lh\n";
}
else if(size == 4)
{
if((KNIGHT_POSIX == Architecture) || (KNIGHT_NATIVE == Architecture)) return "LOAD R0 R0 0\n";
else if(X86 == Architecture) return "mov_eax,[eax]\n";
else if(AMD64 == Architecture) return "movsx_rax,DWORD_PTR_[rax]\n";
else if(ARMV7L == Architecture) return "!0 R0 LOAD32 R0 MEMORY\n";
else if(AARCH64 == Architecture) return "LDR_W0_[X0]\n";
else if((RISCV32 == Architecture) || (RISCV64 == Architecture)) return "rd_a0 rs1_a0 lw\n";
}
else if(size == 8)
{
if(AMD64 == Architecture) return "mov_rax,[rax]\n";
else if(AARCH64 == Architecture) return "DEREF_X0\n";
else if(RISCV64 == Architecture) return "rd_a0 rs1_a0 ld\n";
}
line_error();
fputs(" Got unsupported size ", stderr);
fputs(int2str(size, 10, TRUE), stderr);
fputs(" when trying to load value.\n", stderr);
exit(EXIT_FAILURE);
}
char* load_value_unsigned(unsigned size)
{
if(size == 1)
{
if((KNIGHT_POSIX == Architecture) || (KNIGHT_NATIVE == Architecture)) return "LOADU8 R0 R0 0\n";
else if(X86 == Architecture) return "movzx_eax,BYTE_PTR_[eax]\n";
else if(AMD64 == Architecture) return "movzx_rax,BYTE_PTR_[rax]\n";
else if(ARMV7L == Architecture) return "!0 R0 LOAD R0 MEMORY\n";
else if(AARCH64 == Architecture) return "DEREF_X0_BYTE\n";
else if((RISCV32 == Architecture) || (RISCV64 == Architecture)) return "rd_a0 rs1_a0 lbu\n";
}
else if(size == 2)
{
if((KNIGHT_POSIX == Architecture) || (KNIGHT_NATIVE == Architecture)) return "LOADU16 R0 R0 0\n";
else if(X86 == Architecture) return "movzx_eax,WORD_PTR_[eax]\n";
else if(AMD64 == Architecture) return "movzx_rax,WORD_PTR_[rax]\n";
else if(ARMV7L == Architecture) return "NO_OFFSET R0 LOAD R0 HALF_MEMORY\n";
else if(AARCH64 == Architecture) return "LDRH_W0_[X0]\n";
else if((RISCV32 == Architecture) || (RISCV64 == Architecture)) return "rd_a0 rs1_a0 lhu\n";
}
else if(size == 4)
{
if((KNIGHT_POSIX == Architecture) || (KNIGHT_NATIVE == Architecture)) return "LOAD R0 R0 0\n";
else if(X86 == Architecture) return "mov_eax,[eax]\n";
else if(AMD64 == Architecture) return "mov_eax,[rax]\n";
else if(ARMV7L == Architecture) return "!0 R0 LOAD32 R0 MEMORY\n";
else if(AARCH64 == Architecture) return "LDR_W0_[X0]\n";
else if(RISCV32 == Architecture) return "rd_a0 rs1_a0 lw\n";
else if(RISCV64 == Architecture) return "rd_a0 rs1_a0 lwu\n";
}
else if(size == 8)
{
if(AMD64 == Architecture) return "mov_rax,[rax]\n";
else if(AARCH64 == Architecture) return "DEREF_X0\n";
else if(RISCV64 == Architecture) return "rd_a0 rs1_a0 ld\n";
}
line_error();
fputs(" Got unsupported size ", stderr);
fputs(int2str(size, 10, TRUE), stderr);
fputs(" when trying to load value.\n", stderr);
exit(EXIT_FAILURE);
}
char* load_value(unsigned size, int is_signed)
{
if(is_signed) return load_value_signed(size);
return load_value_unsigned(size);
}
char* store_value(unsigned size)
{
if(size == 1)
{
if((KNIGHT_POSIX == Architecture) || (KNIGHT_NATIVE == Architecture)) return "STORE8 R0 R1 0\n";
else if(X86 == Architecture) return "mov_[ebx],al\n";
else if(AMD64 == Architecture) return "mov_[rbx],al\n";
else if(ARMV7L == Architecture) return "!0 R0 STORE8 R1 MEMORY\n";
else if(AARCH64 == Architecture) return "STR_BYTE_W0_[X1]\n";
else if(RISCV32 == Architecture || RISCV64 == Architecture) return "rs1_a1 rs2_a0 sb\n";
}
else if(size == 2)
{
if((KNIGHT_POSIX == Architecture) || (KNIGHT_NATIVE == Architecture)) return "STORE16 R0 R1 0\n";
else if(X86 == Architecture) return "mov_[ebx],ax\n";
else if(AMD64 == Architecture) return "mov_[rbx],ax\n";
else if(ARMV7L == Architecture) return "NO_OFFSET R0 STORE16 R1 HALF_MEMORY\n";
else if(AARCH64 == Architecture) return "STRH_W0_[X1]\n";
else if(RISCV32 == Architecture || RISCV64 == Architecture) return "rs1_a1 rs2_a0 sh\n";
}
else if(size == 4)
{
if((KNIGHT_POSIX == Architecture) || (KNIGHT_NATIVE == Architecture)) return "STORE R0 R1 0\n";
else if(X86 == Architecture) return "mov_[ebx],eax\n";
else if(AMD64 == Architecture) return "mov_[rbx],eax\n";
else if(ARMV7L == Architecture) return "!0 R0 STORE32 R1 MEMORY\n";
else if(AARCH64 == Architecture) return "STR_W0_[X1]\n";
else if(RISCV32 == Architecture || RISCV64 == Architecture) return "rs1_a1 rs2_a0 sw\n";
}
else if(size == 8)
{
if(AMD64 == Architecture) return "mov_[rbx],rax\n";
else if(AARCH64 == Architecture) return "STR_X0_[X1]\n";
else if(RISCV64 == Architecture) return "rs1_a1 rs2_a0 sd\n";
}
/* Should not happen but print error message. */
fputs("Got unsupported size ", stderr);
fputs(int2str(size, 10, TRUE), stderr);
fputs(" when storing number in register.\n", stderr);
line_error();
exit(EXIT_FAILURE);
}
int is_compound_assignment(char* token)
{
if(match("+=", token)) return TRUE;
else if(match("-=", token)) return TRUE;
else if(match("*=", token)) return TRUE;
else if(match("/=", token)) return TRUE;
else if(match("%=", token)) return TRUE;
else if(match("<<=", token)) return TRUE;
else if(match(">>=", token)) return TRUE;
else if(match("&=", token)) return TRUE;
else if(match("^=", token)) return TRUE;
else if(match("|=", token)) return TRUE;
return FALSE;
}
void postfix_expr_stub(void);
void variable_load(struct token_list* a, int num_dereference)
{
require(NULL != global_token, "incomplete variable load received\n");
if((match("FUNCTION", a->type->name) || match("FUNCTION*", a->type->name)) && match("(", global_token->s))
{
function_call(int2str(a->depth, 10, TRUE), TRUE);
return;
}
current_target = a->type;
if((KNIGHT_POSIX == Architecture) || (KNIGHT_NATIVE == Architecture)) emit_out("ADDI R0 R14 ");
else if(X86 == Architecture) emit_out("lea_eax,[ebp+DWORD] %");
else if(AMD64 == Architecture) emit_out("lea_rax,[rbp+DWORD] %");
else if(ARMV7L == Architecture) emit_out("!");
else if(AARCH64 == Architecture) emit_out("SET_X0_FROM_BP\nLOAD_W1_AHEAD\nSKIP_32_DATA\n%");
else if((RISCV32 == Architecture) || (RISCV64 == Architecture)) emit_out("rd_a0 rs1_fp !");
emit_out(int2str(a->depth, 10, TRUE));
if(ARMV7L == Architecture) emit_out(" R0 SUB BP ARITH_ALWAYS");
else if(AARCH64 == Architecture) emit_out("\nSUB_X0_X0_X1\n");
else if((RISCV32 == Architecture) || (RISCV64 == Architecture)) emit_out(" addi");
emit_out("\n");
if(TRUE == Address_of) return;
if(match(".", global_token->s))
{
postfix_expr_stub();
return;
}
if(!match("=", global_token->s) && !is_compound_assignment(global_token->s))
{
emit_out(load_value(current_target->size, current_target->is_signed));
while (num_dereference > 0)
{
current_target = current_target->type;
emit_out(load_value(current_target->size, current_target->is_signed));
num_dereference = num_dereference - 1;
}
return;
}
while (num_dereference > 0)
{
emit_out(load_value(current_target->size, current_target->is_signed));
current_target = current_target->type;
num_dereference = num_dereference - 1;
}
}
void function_load(struct token_list* a)
{
require(NULL != global_token, "incomplete function load\n");
if(match("(", global_token->s))
{
function_call(a->s, FALSE);
return;
}
if((KNIGHT_NATIVE == Architecture) || (KNIGHT_POSIX == Architecture)) emit_out("LOADR R0 4\nJUMP 4\n&FUNCTION_");
else if(X86 == Architecture) emit_out("mov_eax, &FUNCTION_");
else if(AMD64 == Architecture) emit_out("lea_rax,[rip+DWORD] %FUNCTION_");
else if(ARMV7L == Architecture) emit_out("!0 R0 LOAD32 R15 MEMORY\n~0 JUMP_ALWAYS\n&FUNCTION_");
else if(AARCH64 == Architecture) emit_out("LOAD_W0_AHEAD\nSKIP_32_DATA\n&FUNCTION_");
else if((RISCV32 == Architecture) || (RISCV64 == Architecture)) emit_out("rd_a0 ~FUNCTION_");
emit_out(a->s);
if(RISCV32 == Architecture)
{
emit_out(" auipc\n");
emit_out("rd_a0 rs1_a0 !FUNCTION_");
emit_out(a->s);
emit_out(" addi");
}
else if(RISCV64 == Architecture)
{
emit_out(" auipc\n");
emit_out("rd_a0 rs1_a0 !FUNCTION_");
emit_out(a->s);
emit_out(" addiw");
}
emit_out("\n");
}
void global_load(struct token_list* a)
{
current_target = a->type;
if((KNIGHT_NATIVE == Architecture) || (KNIGHT_POSIX == Architecture)) emit_out("LOADR R0 4\nJUMP 4\n&GLOBAL_");
else if(X86 == Architecture) emit_out("mov_eax, &GLOBAL_");
else if(AMD64 == Architecture) emit_out("lea_rax,[rip+DWORD] %GLOBAL_");
else if(ARMV7L == Architecture) emit_out("!0 R0 LOAD32 R15 MEMORY\n~0 JUMP_ALWAYS\n&GLOBAL_");
else if(AARCH64 == Architecture) emit_out("LOAD_W0_AHEAD\nSKIP_32_DATA\n&GLOBAL_");
else if((RISCV32 == Architecture) || (RISCV64 == Architecture)) emit_out("rd_a0 ~GLOBAL_");
emit_out(a->s);
if((RISCV32 == Architecture) || (RISCV64 == Architecture))
{
emit_out(" auipc\n");
emit_out("rd_a0 rs1_a0 !GLOBAL_");
emit_out(a->s);
emit_out(" addi");
}
emit_out("\n");
require(NULL != global_token, "unterminated global load\n");
if(TRUE == Address_of) return;
if(match(".", global_token->s))
{
postfix_expr_stub();
return;
}
if(match("=", global_token->s) || is_compound_assignment(global_token->s)) return;
emit_out(load_value(register_size, current_target->is_signed));
}
/*
* primary-expr:
* FAILURE
* "String"
* 'Char'
* [0-9]*
* [a-z,A-Z]*
* ( expression )
*/
void primary_expr_failure(void)
{
require(NULL != global_token, "hit EOF when expecting primary expression\n");
line_error();
fputs("Received ", stderr);
fputs(global_token->s, stderr);
fputs(" in primary_expr\n", stderr);
exit(EXIT_FAILURE);
}
void primary_expr_string(void)
{
char* number_string = int2str(current_count, 10, TRUE);
current_count = current_count + 1;
if((KNIGHT_NATIVE == Architecture) || (KNIGHT_POSIX == Architecture)) emit_out("LOADR R0 4\nJUMP 4\n&STRING_");
else if(X86 == Architecture) emit_out("mov_eax, &STRING_");
else if(AMD64 == Architecture) emit_out("lea_rax,[rip+DWORD] %STRING_");
else if(ARMV7L == Architecture) emit_out("!0 R0 LOAD32 R15 MEMORY\n~0 JUMP_ALWAYS\n&STRING_");
else if(AARCH64 == Architecture) emit_out("LOAD_W0_AHEAD\nSKIP_32_DATA\n&STRING_");
else if((RISCV32 == Architecture) || (RISCV64 == Architecture)) emit_out("rd_a0 ~STRING_");
uniqueID_out(function->s, number_string);
if((RISCV32 == Architecture) || (RISCV64 == Architecture))
{
emit_out("auipc\n");
emit_out("rd_a0 rs1_a0 !STRING_");
uniqueID_out(function->s, number_string);
emit_out("addi\n");
}
/* The target */
strings_list = emit(":STRING_", strings_list);
strings_list = uniqueID(function->s, strings_list, number_string);
/* catch case of just "foo" from segfaulting */
require(NULL != global_token->next, "a string by itself is not valid C\n");
/* Parse the string */
if('"' != global_token->next->s[0])
{
strings_list = emit(parse_string(global_token->s), strings_list);
global_token = global_token->next;
}
else
{
char* s = calloc(MAX_STRING, sizeof(char));
/* prefix leading string */
s[0] = '"';
int i = 1;
int used_string_concatenation = FALSE;
int j;
while('"' == global_token->s[0])
{
if(used_string_concatenation) maybe_bootstrap_error("string literal concatenation");
/* Step past the leading '"' */
j = 1;
/* Copy the rest of the string as is */
while(0 != global_token->s[j])
{
require(i < MAX_STRING, "concat string exceeded max string length\n");
s[i] = global_token->s[j];
i = i + 1;
j = j + 1;
}
/* Move on to the next token */
global_token = global_token->next;
require(NULL != global_token, "multi-string null is not valid C\n");
used_string_concatenation = TRUE;
}
/* Now use it */
strings_list = emit(parse_string(s), strings_list);
}
}
void primary_expr_char(void)
{
if((KNIGHT_POSIX == Architecture) || (KNIGHT_NATIVE == Architecture)) emit_out("LOADI R0 ");
else if(X86 == Architecture) emit_out("mov_eax, %");
else if(AMD64 == Architecture) emit_out("mov_rax, %");
else if(ARMV7L == Architecture) emit_out("!");
else if(AARCH64 == Architecture) emit_out("LOAD_W0_AHEAD\nSKIP_32_DATA\n%");
else if((RISCV32 == Architecture) || (RISCV64 == Architecture)) emit_out("rd_a0 !");
emit_out(int2str(escape_lookup(global_token->s + 1), 10, TRUE));
if(ARMV7L == Architecture) emit_out(" R0 LOADI8_ALWAYS");
else if((RISCV32 == Architecture) || (RISCV64 == Architecture)) emit_out(" addi");
emit_out("\n");
global_token = global_token->next;
}
int hex2char(int c)
{
if((c >= 0) && (c <= 9)) return (c + 48);
else if((c >= 10) && (c <= 15)) return (c + 55);
else return -1;
}
char* number_to_hex(int a, int bytes)
{
require(bytes > 0, "number to hex must have a positive number of bytes greater than zero\n");
char* result = calloc(1 + (bytes << 1), sizeof(char));
if(NULL == result)
{
fputs("calloc failed in number_to_hex\n", stderr);
exit(EXIT_FAILURE);
}
int i = 0;
int divisor = (bytes << 3);
require(divisor > 0, "unexpected wrap around in number_to_hex\n");
/* Simply collect numbers until divisor is gone */
while(0 != divisor)
{
divisor = divisor - 4;
result[i] = hex2char((a >> divisor) & 0xF);
i = i + 1;
}
return result;
}
void primary_expr_number(char* s)
{
if((KNIGHT_POSIX == Architecture) || (KNIGHT_NATIVE == Architecture))
{
int size = strtoint(s);
if((32767 > size) && (size > -32768))
{
emit_out("LOADI R0 ");
emit_out(s);
}
else
{
emit_out("LOADR R0 4\nJUMP 4\n'");
emit_out(number_to_hex(size, register_size));
emit_out("'");
}
}
else if(X86 == Architecture)
{
emit_out("mov_eax, %");
emit_out(s);
}
else if(AMD64 == Architecture)
{
emit_out("mov_rax, %");
emit_out(s);
}
else if(ARMV7L == Architecture)
{
emit_out("!0 R0 LOAD32 R15 MEMORY\n~0 JUMP_ALWAYS\n%");
emit_out(s);
}
else if(AARCH64 == Architecture)
{
emit_out("LOAD_W0_AHEAD\nSKIP_32_DATA\n%");
emit_out(s);
}
else if((RISCV32 == Architecture) || (RISCV64 == Architecture))
{
int size = strtoint(s);
if((2047 >= size) && (size >= -2048))
{
emit_out("rd_a0 !");
emit_out(s);
emit_out(" addi");
}
else if (0 == (size >> 30))
{
emit_out("rd_a0 ~");
emit_out(s);
emit_out(" lui\n");
emit_out("rd_a0 rs1_a0 !");
emit_out(s);
emit_out(" addi");
}
else
{
int high = size >> 30;
int low = ((size >> 30) << 30) ^ size;
emit_out("rd_a0 ~");
emit_out(int2str(high, 10, TRUE));
emit_out(" lui\n");
emit_out("rd_a0 rs1_a0 !");
emit_out(int2str(high, 10, TRUE));
emit_out(" addi\n");
emit_out("rd_a0 rs1_a0 rs2_x30 slli\n");
emit_out("rd_t1 ~");
emit_out(int2str(low, 10, TRUE));
emit_out(" lui\n");
emit_out("rd_t1 rs1_t1 !");
emit_out(int2str(low, 10, TRUE));
emit_out(" addi\n");
emit_out("rd_a0 rs1_a0 rs2_t1 or\n");
}
}
emit_out("\n");
}
void primary_expr_variable(void)
{
int num_dereference = 0;
while(global_token->s[0] == '*') {
global_token = global_token->next;
require(NULL != global_token, "Walked off the end of a variable dereference\n");
num_dereference = num_dereference + 1;
}
char* s = global_token->s;
global_token = global_token->next;
struct token_list* a = sym_lookup(s, global_constant_list);
if(NULL != a)
{
constant_load(a->arguments->s);
return;
}
a = sym_lookup(s, function->locals);
if(NULL != a)
{
variable_load(a, num_dereference);
return;
}
a = sym_lookup(s, function->arguments);
if(NULL != a)
{
variable_load(a, num_dereference);
return;
}
a = sym_lookup(s, global_function_list);
if(NULL != a)
{
function_load(a);
return;
}
a = sym_lookup(s, global_symbol_list);
if(NULL != a)
{
global_load(a);
return;
}
line_error();
fputs(s ,stderr);
fputs(" is not a defined symbol\n", stderr);
exit(EXIT_FAILURE);
}
void primary_expr(void);
struct type* promote_type(struct type* a, struct type* b)
{
require(NULL != b, "impossible case 1 in promote_type\n");
require(NULL != a, "impossible case 2 in promote_type\n");
if(a == b) return a;
struct type* i;
for(i = global_types; NULL != i; i = i->next)
{
if(a->name == i->name) break;
if(b->name == i->name) break;
if(a->name == i->indirect->name) break;
if(b->name == i->indirect->name) break;
if(a->name == i->indirect->indirect->name) break;
if(b->name == i->indirect->indirect->name) break;
}
require(NULL != i, "impossible case 3 in promote_type\n");
return i;
}
void common_recursion(FUNCTION f)
{
if((KNIGHT_POSIX == Architecture) || (KNIGHT_NATIVE == Architecture)) emit_out("PUSHR R0 R15\t#_common_recursion\n");
else if(X86 == Architecture) emit_out("push_eax\t#_common_recursion\n");
else if(AMD64 == Architecture) emit_out("push_rax\t#_common_recursion\n");
else if(ARMV7L == Architecture) emit_out("{R0} PUSH_ALWAYS\t#_common_recursion\n");
else if(AARCH64 == Architecture) emit_out("PUSH_X0\t#_common_recursion\n");
else if(RISCV32 == Architecture) emit_out("rd_sp rs1_sp !-4 addi\t# _common_recursion\nrs1_sp rs2_a0 sw\n");
else if(RISCV64 == Architecture) emit_out("rd_sp rs1_sp !-8 addi\t# _common_recursion\nrs1_sp rs2_a0 sd\n");
struct type* last_type = current_target;
global_token = global_token->next;
require(NULL != global_token, "Received EOF in common_recursion\n");
f();
current_target = promote_type(current_target, last_type);
if((KNIGHT_POSIX == Architecture) || (KNIGHT_NATIVE == Architecture)) emit_out("POPR R1 R15\t# _common_recursion\n");
else if(X86 == Architecture) emit_out("pop_ebx\t# _common_recursion\n");
else if(AMD64 == Architecture) emit_out("pop_rbx\t# _common_recursion\n");
else if(ARMV7L == Architecture) emit_out("{R1} POP_ALWAYS\t# _common_recursion\n");
else if(AARCH64 == Architecture) emit_out("POP_X1\t# _common_recursion\n");
else if(RISCV32 == Architecture) emit_out("rd_a1 rs1_sp lw\nrd_sp rs1_sp !4 addi\t# _common_recursion\n");
else if(RISCV64 == Architecture) emit_out("rd_a1 rs1_sp ld\nrd_sp rs1_sp !8 addi\t# _common_recursion\n");
}
void general_recursion(FUNCTION f, char* s, char* name, FUNCTION iterate)
{
require(NULL != global_token, "Received EOF in general_recursion\n");