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ABISysV_arm.cpp
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1//===-- ABISysV_arm.cpp ---------------------------------------------------===//
2//
3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4// See https://llvm.org/LICENSE.txt for license information.
5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6//
7//===----------------------------------------------------------------------===//
8
9#include "ABISysV_arm.h"
10
11#include <optional>
12#include <vector>
13
14#include "llvm/ADT/STLExtras.h"
15#include "llvm/TargetParser/Triple.h"
16
17#include "lldb/Core/Module.h"
19#include "lldb/Core/Value.h"
22#include "lldb/Target/Process.h"
24#include "lldb/Target/Target.h"
25#include "lldb/Target/Thread.h"
28#include "lldb/Utility/Scalar.h"
29#include "lldb/Utility/Status.h"
30
34
35using namespace lldb;
36using namespace lldb_private;
37
39
40static const RegisterInfo g_register_infos[] = {
41 // NAME ALT SZ OFF ENCODING FORMAT EH_FRAME
42 // DWARF GENERIC PROCESS PLUGIN
43 // LLDB NATIVE VALUE REGS INVALIDATE REGS
44 // ========== ======= == === ============= ============
45 // ======================= =================== ===========================
46 // ======================= ====================== ==========
47 // ===============
48 {"r0",
49 nullptr,
50 4,
51 0,
56 nullptr,
57 nullptr,
58 },
59 {"r1",
60 nullptr,
61 4,
62 0,
67 nullptr,
68 nullptr,
69 },
70 {"r2",
71 nullptr,
72 4,
73 0,
78 nullptr,
79 nullptr,
80 },
81 {"r3",
82 nullptr,
83 4,
84 0,
89 nullptr,
90 nullptr,
91 },
92 {"r4",
93 nullptr,
94 4,
95 0,
100 nullptr,
101 nullptr,
102 },
103 {"r5",
104 nullptr,
105 4,
106 0,
111 nullptr,
112 nullptr,
113 },
114 {"r6",
115 nullptr,
116 4,
117 0,
122 nullptr,
123 nullptr,
124 },
125 {"r7",
126 nullptr,
127 4,
128 0,
133 nullptr,
134 nullptr,
135 },
136 {"r8",
137 nullptr,
138 4,
139 0,
144 nullptr,
145 nullptr,
146 },
147 {"r9",
148 nullptr,
149 4,
150 0,
155 nullptr,
156 nullptr,
157 },
158 {"r10",
159 nullptr,
160 4,
161 0,
166 nullptr,
167 nullptr,
168 },
169 {"r11",
170 nullptr,
171 4,
172 0,
177 nullptr,
178 nullptr,
179 },
180 {"r12",
181 nullptr,
182 4,
183 0,
188 nullptr,
189 nullptr,
190 },
191 {"sp",
192 "r13",
193 4,
194 0,
199 nullptr,
200 nullptr,
201 },
202 {"lr",
203 "r14",
204 4,
205 0,
210 nullptr,
211 nullptr,
212 },
213 {"pc",
214 "r15",
215 4,
216 0,
221 nullptr,
222 nullptr,
223 },
224 {"cpsr",
225 "psr",
226 4,
227 0,
232 nullptr,
233 nullptr,
234 },
235 {"s0",
236 nullptr,
237 4,
238 0,
243 nullptr,
244 nullptr,
245 },
246 {"s1",
247 nullptr,
248 4,
249 0,
254 nullptr,
255 nullptr,
256 },
257 {"s2",
258 nullptr,
259 4,
260 0,
265 nullptr,
266 nullptr,
267 },
268 {"s3",
269 nullptr,
270 4,
271 0,
276 nullptr,
277 nullptr,
278 },
279 {"s4",
280 nullptr,
281 4,
282 0,
287 nullptr,
288 nullptr,
289 },
290 {"s5",
291 nullptr,
292 4,
293 0,
298 nullptr,
299 nullptr,
300 },
301 {"s6",
302 nullptr,
303 4,
304 0,
309 nullptr,
310 nullptr,
311 },
312 {"s7",
313 nullptr,
314 4,
315 0,
320 nullptr,
321 nullptr,
322 },
323 {"s8",
324 nullptr,
325 4,
326 0,
331 nullptr,
332 nullptr,
333 },
334 {"s9",
335 nullptr,
336 4,
337 0,
342 nullptr,
343 nullptr,
344 },
345 {"s10",
346 nullptr,
347 4,
348 0,
353 nullptr,
354 nullptr,
355 },
356 {"s11",
357 nullptr,
358 4,
359 0,
364 nullptr,
365 nullptr,
366 },
367 {"s12",
368 nullptr,
369 4,
370 0,
375 nullptr,
376 nullptr,
377 },
378 {"s13",
379 nullptr,
380 4,
381 0,
386 nullptr,
387 nullptr,
388 },
389 {"s14",
390 nullptr,
391 4,
392 0,
397 nullptr,
398 nullptr,
399 },
400 {"s15",
401 nullptr,
402 4,
403 0,
408 nullptr,
409 nullptr,
410 },
411 {"s16",
412 nullptr,
413 4,
414 0,
419 nullptr,
420 nullptr,
421 },
422 {"s17",
423 nullptr,
424 4,
425 0,
430 nullptr,
431 nullptr,
432 },
433 {"s18",
434 nullptr,
435 4,
436 0,
441 nullptr,
442 nullptr,
443 },
444 {"s19",
445 nullptr,
446 4,
447 0,
452 nullptr,
453 nullptr,
454 },
455 {"s20",
456 nullptr,
457 4,
458 0,
463 nullptr,
464 nullptr,
465 },
466 {"s21",
467 nullptr,
468 4,
469 0,
474 nullptr,
475 nullptr,
476 },
477 {"s22",
478 nullptr,
479 4,
480 0,
485 nullptr,
486 nullptr,
487 },
488 {"s23",
489 nullptr,
490 4,
491 0,
496 nullptr,
497 nullptr,
498 },
499 {"s24",
500 nullptr,
501 4,
502 0,
507 nullptr,
508 nullptr,
509 },
510 {"s25",
511 nullptr,
512 4,
513 0,
518 nullptr,
519 nullptr,
520 },
521 {"s26",
522 nullptr,
523 4,
524 0,
529 nullptr,
530 nullptr,
531 },
532 {"s27",
533 nullptr,
534 4,
535 0,
540 nullptr,
541 nullptr,
542 },
543 {"s28",
544 nullptr,
545 4,
546 0,
551 nullptr,
552 nullptr,
553 },
554 {"s29",
555 nullptr,
556 4,
557 0,
562 nullptr,
563 nullptr,
564 },
565 {"s30",
566 nullptr,
567 4,
568 0,
573 nullptr,
574 nullptr,
575 },
576 {"s31",
577 nullptr,
578 4,
579 0,
584 nullptr,
585 nullptr,
586 },
587 {"fpscr",
588 nullptr,
589 4,
590 0,
595 nullptr,
596 nullptr,
597 },
598 {"d0",
599 nullptr,
600 8,
601 0,
606 nullptr,
607 nullptr,
608 },
609 {"d1",
610 nullptr,
611 8,
612 0,
617 nullptr,
618 nullptr,
619 },
620 {"d2",
621 nullptr,
622 8,
623 0,
628 nullptr,
629 nullptr,
630 },
631 {"d3",
632 nullptr,
633 8,
634 0,
639 nullptr,
640 nullptr,
641 },
642 {"d4",
643 nullptr,
644 8,
645 0,
650 nullptr,
651 nullptr,
652 },
653 {"d5",
654 nullptr,
655 8,
656 0,
661 nullptr,
662 nullptr,
663 },
664 {"d6",
665 nullptr,
666 8,
667 0,
672 nullptr,
673 nullptr,
674 },
675 {"d7",
676 nullptr,
677 8,
678 0,
683 nullptr,
684 nullptr,
685 },
686 {"d8",
687 nullptr,
688 8,
689 0,
694 nullptr,
695 nullptr,
696 },
697 {"d9",
698 nullptr,
699 8,
700 0,
705 nullptr,
706 nullptr,
707 },
708 {"d10",
709 nullptr,
710 8,
711 0,
716 nullptr,
717 nullptr,
718 },
719 {"d11",
720 nullptr,
721 8,
722 0,
727 nullptr,
728 nullptr,
729 },
730 {"d12",
731 nullptr,
732 8,
733 0,
738 nullptr,
739 nullptr,
740 },
741 {"d13",
742 nullptr,
743 8,
744 0,
749 nullptr,
750 nullptr,
751 },
752 {"d14",
753 nullptr,
754 8,
755 0,
760 nullptr,
761 nullptr,
762 },
763 {"d15",
764 nullptr,
765 8,
766 0,
771 nullptr,
772 nullptr,
773 },
774 {"d16",
775 nullptr,
776 8,
777 0,
782 nullptr,
783 nullptr,
784 },
785 {"d17",
786 nullptr,
787 8,
788 0,
793 nullptr,
794 nullptr,
795 },
796 {"d18",
797 nullptr,
798 8,
799 0,
804 nullptr,
805 nullptr,
806 },
807 {"d19",
808 nullptr,
809 8,
810 0,
815 nullptr,
816 nullptr,
817 },
818 {"d20",
819 nullptr,
820 8,
821 0,
826 nullptr,
827 nullptr,
828 },
829 {"d21",
830 nullptr,
831 8,
832 0,
837 nullptr,
838 nullptr,
839 },
840 {"d22",
841 nullptr,
842 8,
843 0,
848 nullptr,
849 nullptr,
850 },
851 {"d23",
852 nullptr,
853 8,
854 0,
859 nullptr,
860 nullptr,
861 },
862 {"d24",
863 nullptr,
864 8,
865 0,
870 nullptr,
871 nullptr,
872 },
873 {"d25",
874 nullptr,
875 8,
876 0,
881 nullptr,
882 nullptr,
883 },
884 {"d26",
885 nullptr,
886 8,
887 0,
892 nullptr,
893 nullptr,
894 },
895 {"d27",
896 nullptr,
897 8,
898 0,
903 nullptr,
904 nullptr,
905 },
906 {"d28",
907 nullptr,
908 8,
909 0,
914 nullptr,
915 nullptr,
916 },
917 {"d29",
918 nullptr,
919 8,
920 0,
925 nullptr,
926 nullptr,
927 },
928 {"d30",
929 nullptr,
930 8,
931 0,
936 nullptr,
937 nullptr,
938 },
939 {"d31",
940 nullptr,
941 8,
942 0,
947 nullptr,
948 nullptr,
949 },
950 {"r8_usr",
951 nullptr,
952 4,
953 0,
958 nullptr,
959 nullptr,
960 },
961 {"r9_usr",
962 nullptr,
963 4,
964 0,
969 nullptr,
970 nullptr,
971 },
972 {"r10_usr",
973 nullptr,
974 4,
975 0,
980 nullptr,
981 nullptr,
982 },
983 {"r11_usr",
984 nullptr,
985 4,
986 0,
991 nullptr,
992 nullptr,
993 },
994 {"r12_usr",
995 nullptr,
996 4,
997 0,
1002 nullptr,
1003 nullptr,
1004 },
1005 {"r13_usr",
1006 "sp_usr",
1007 4,
1008 0,
1010 eFormatHex,
1013 nullptr,
1014 nullptr,
1015 },
1016 {"r14_usr",
1017 "lr_usr",
1018 4,
1019 0,
1021 eFormatHex,
1024 nullptr,
1025 nullptr,
1026 },
1027 {"r8_fiq",
1028 nullptr,
1029 4,
1030 0,
1032 eFormatHex,
1035 nullptr,
1036 nullptr,
1037 },
1038 {"r9_fiq",
1039 nullptr,
1040 4,
1041 0,
1043 eFormatHex,
1046 nullptr,
1047 nullptr,
1048 },
1049 {"r10_fiq",
1050 nullptr,
1051 4,
1052 0,
1054 eFormatHex,
1057 nullptr,
1058 nullptr,
1059 },
1060 {"r11_fiq",
1061 nullptr,
1062 4,
1063 0,
1065 eFormatHex,
1068 nullptr,
1069 nullptr,
1070 },
1071 {"r12_fiq",
1072 nullptr,
1073 4,
1074 0,
1076 eFormatHex,
1079 nullptr,
1080 nullptr,
1081 },
1082 {"r13_fiq",
1083 "sp_fiq",
1084 4,
1085 0,
1087 eFormatHex,
1090 nullptr,
1091 nullptr,
1092 },
1093 {"r14_fiq",
1094 "lr_fiq",
1095 4,
1096 0,
1098 eFormatHex,
1101 nullptr,
1102 nullptr,
1103 },
1104 {"r13_irq",
1105 "sp_irq",
1106 4,
1107 0,
1109 eFormatHex,
1112 nullptr,
1113 nullptr,
1114 },
1115 {"r14_irq",
1116 "lr_irq",
1117 4,
1118 0,
1120 eFormatHex,
1123 nullptr,
1124 nullptr,
1125 },
1126 {"r13_abt",
1127 "sp_abt",
1128 4,
1129 0,
1131 eFormatHex,
1134 nullptr,
1135 nullptr,
1136 },
1137 {"r14_abt",
1138 "lr_abt",
1139 4,
1140 0,
1142 eFormatHex,
1145 nullptr,
1146 nullptr,
1147 },
1148 {"r13_und",
1149 "sp_und",
1150 4,
1151 0,
1153 eFormatHex,
1156 nullptr,
1157 nullptr,
1158 },
1159 {"r14_und",
1160 "lr_und",
1161 4,
1162 0,
1164 eFormatHex,
1167 nullptr,
1168 nullptr,
1169 },
1170 {"r13_svc",
1171 "sp_svc",
1172 4,
1173 0,
1175 eFormatHex,
1178 nullptr,
1179 nullptr,
1180 },
1181 {"r14_svc",
1182 "lr_svc",
1183 4,
1184 0,
1186 eFormatHex,
1189 nullptr,
1190 nullptr,
1191 }};
1192
1194
1195const lldb_private::RegisterInfo *
1197 count = k_num_register_infos;
1198 return g_register_infos;
1199}
1200
1201size_t ABISysV_arm::GetRedZoneSize() const { return 0; }
1202
1203// Static Functions
1204
1205ABISP
1206ABISysV_arm::CreateInstance(lldb::ProcessSP process_sp, const ArchSpec &arch) {
1207 const llvm::Triple::ArchType arch_type = arch.GetTriple().getArch();
1208 const llvm::Triple::VendorType vendor_type = arch.GetTriple().getVendor();
1209
1210 if (vendor_type != llvm::Triple::Apple) {
1211 if ((arch_type == llvm::Triple::arm) ||
1212 (arch_type == llvm::Triple::thumb)) {
1213 return ABISP(
1214 new ABISysV_arm(std::move(process_sp), MakeMCRegisterInfo(arch)));
1215 }
1216 }
1217
1218 return ABISP();
1219}
1220
1222 addr_t function_addr, addr_t return_addr,
1223 llvm::ArrayRef<addr_t> args) const {
1224 RegisterContext *reg_ctx = thread.GetRegisterContext().get();
1225 if (!reg_ctx)
1226 return false;
1227
1228 const uint32_t pc_reg_num = reg_ctx->ConvertRegisterKindToRegisterNumber(
1230 const uint32_t sp_reg_num = reg_ctx->ConvertRegisterKindToRegisterNumber(
1232 const uint32_t ra_reg_num = reg_ctx->ConvertRegisterKindToRegisterNumber(
1234
1235 RegisterValue reg_value;
1236
1237 const uint8_t reg_names[] = {
1240
1241 llvm::ArrayRef<addr_t>::iterator ai = args.begin(), ae = args.end();
1242
1243 for (size_t i = 0; i < std::size(reg_names); ++i) {
1244 if (ai == ae)
1245 break;
1246
1247 reg_value.SetUInt32(*ai);
1248 if (!reg_ctx->WriteRegister(
1249 reg_ctx->GetRegisterInfo(eRegisterKindGeneric, reg_names[i]),
1250 reg_value))
1251 return false;
1252
1253 ++ai;
1254 }
1255
1256 if (ai != ae) {
1257 // Spill onto the stack
1258 size_t num_stack_regs = ae - ai;
1259
1260 sp -= (num_stack_regs * 4);
1261 // Keep the stack 8 byte aligned, not that we need to
1262 sp &= ~(8ull - 1ull);
1263
1264 // just using arg1 to get the right size
1265 const RegisterInfo *reg_info = reg_ctx->GetRegisterInfo(
1267
1268 addr_t arg_pos = sp;
1269
1270 for (; ai != ae; ++ai) {
1271 reg_value.SetUInt32(*ai);
1272 if (reg_ctx
1273 ->WriteRegisterValueToMemory(reg_info, arg_pos,
1274 reg_info->byte_size, reg_value)
1275 .Fail())
1276 return false;
1277 arg_pos += reg_info->byte_size;
1278 }
1279 }
1280
1281 TargetSP target_sp(thread.CalculateTarget());
1282 Address so_addr;
1283
1284 // Figure out if our return address is ARM or Thumb by using the
1285 // Address::GetCallableLoadAddress(Target*) which will figure out the ARM
1286 // thumb-ness and set the correct address bits for us.
1287 so_addr.SetLoadAddress(return_addr, target_sp.get());
1288 return_addr = so_addr.GetCallableLoadAddress(target_sp.get());
1289
1290 // Set "lr" to the return address
1291 if (!reg_ctx->WriteRegisterFromUnsigned(ra_reg_num, return_addr))
1292 return false;
1293
1294 // Set "sp" to the requested value
1295 if (!reg_ctx->WriteRegisterFromUnsigned(sp_reg_num, sp))
1296 return false;
1297
1298 // If bit zero or 1 is set, this must be a thumb function, no need to figure
1299 // this out from the symbols.
1300 so_addr.SetLoadAddress(function_addr, target_sp.get());
1301 function_addr = so_addr.GetCallableLoadAddress(target_sp.get());
1302
1303 const RegisterInfo *cpsr_reg_info =
1305 const uint32_t curr_cpsr = reg_ctx->ReadRegisterAsUnsigned(cpsr_reg_info, 0);
1306
1307 // Make a new CPSR and mask out any Thumb IT (if/then) bits
1308 uint32_t new_cpsr = curr_cpsr & ~MASK_CPSR_IT_MASK;
1309 // If bit zero or 1 is set, this must be thumb...
1310 if (function_addr & 1ull)
1311 new_cpsr |= MASK_CPSR_T; // Set T bit in CPSR
1312 else
1313 new_cpsr &= ~MASK_CPSR_T; // Clear T bit in CPSR
1314
1315 if (new_cpsr != curr_cpsr) {
1316 if (!reg_ctx->WriteRegisterFromUnsigned(cpsr_reg_info, new_cpsr))
1317 return false;
1318 }
1319
1320 function_addr &=
1321 ~1ull; // clear bit zero since the CPSR will take care of the mode for us
1322
1323 // Set "pc" to the address requested
1324 return reg_ctx->WriteRegisterFromUnsigned(pc_reg_num, function_addr);
1325}
1326
1328 uint32_t num_values = values.GetSize();
1329
1330 ExecutionContext exe_ctx(thread.shared_from_this());
1331 // For now, assume that the types in the AST values come from the Target's
1332 // scratch AST.
1333
1334 // Extract the register context so we can read arguments from registers
1335
1336 RegisterContext *reg_ctx = thread.GetRegisterContext().get();
1337
1338 if (!reg_ctx)
1339 return false;
1340
1341 addr_t sp = 0;
1342
1343 for (uint32_t value_idx = 0; value_idx < num_values; ++value_idx) {
1344 // We currently only support extracting values with Clang QualTypes. Do we
1345 // care about others?
1346 Value *value = values.GetValueAtIndex(value_idx);
1347
1348 if (!value)
1349 return false;
1350
1351 CompilerType compiler_type = value->GetCompilerType();
1352 if (compiler_type) {
1353 bool is_signed = false;
1354 size_t bit_width = 0;
1355 if (compiler_type.IsIntegerOrEnumerationType(is_signed) ||
1356 compiler_type.IsPointerOrReferenceType()) {
1357 if (std::optional<uint64_t> size = compiler_type.GetBitSize(&thread))
1358 bit_width = *size;
1359 } else {
1360 // We only handle integer, pointer and reference types currently...
1361 return false;
1362 }
1363
1364 if (bit_width <= (exe_ctx.GetProcessRef().GetAddressByteSize() * 8)) {
1365 if (value_idx < 4) {
1366 // Arguments 1-4 are in r0-r3...
1367 const RegisterInfo *arg_reg_info = nullptr;
1368 arg_reg_info = reg_ctx->GetRegisterInfo(
1370 if (arg_reg_info) {
1371 RegisterValue reg_value;
1372
1373 if (reg_ctx->ReadRegister(arg_reg_info, reg_value)) {
1374 if (is_signed)
1375 reg_value.SignExtend(bit_width);
1376 if (!reg_value.GetScalarValue(value->GetScalar()))
1377 return false;
1378 continue;
1379 }
1380 }
1381 return false;
1382 } else {
1383 if (sp == 0) {
1384 // Read the stack pointer if it already hasn't been read
1385 sp = reg_ctx->GetSP(0);
1386 if (sp == 0)
1387 return false;
1388 }
1389
1390 // Arguments 5 on up are on the stack
1391 const uint32_t arg_byte_size = (bit_width + (8 - 1)) / 8;
1392 Status error;
1394 sp, arg_byte_size, is_signed, value->GetScalar(), error))
1395 return false;
1396
1397 sp += arg_byte_size;
1398 }
1399 }
1400 }
1401 }
1402 return true;
1403}
1404
1406 RegisterContext *reg_ctx,
1407 size_t byte_size, Value &value) {
1408 Status error;
1409 DataBufferHeap buffer(byte_size, 0);
1410
1411 const RegisterInfo *r0_reg_info =
1413 uint32_t address =
1414 reg_ctx->ReadRegisterAsUnsigned(r0_reg_info, 0) & UINT32_MAX;
1415 thread.GetProcess()->ReadMemory(address, buffer.GetBytes(),
1416 buffer.GetByteSize(), error);
1417
1418 if (error.Fail())
1419 return false;
1420
1421 value.SetBytes(buffer.GetBytes(), buffer.GetByteSize());
1422 return true;
1423}
1424
1426 ProcessSP process_sp(thread.GetProcess());
1427 if (process_sp) {
1428 const ArchSpec &arch(process_sp->GetTarget().GetArchitecture());
1429
1430 return (arch.GetFlags() & ArchSpec::eARM_abi_hard_float) != 0;
1431 }
1432
1433 return false;
1434}
1435
1437 Thread &thread, lldb_private::CompilerType &compiler_type) const {
1438 Value value;
1439 ValueObjectSP return_valobj_sp;
1440
1441 if (!compiler_type)
1442 return return_valobj_sp;
1443
1444 // value.SetContext (Value::eContextTypeClangType,
1445 // compiler_type.GetOpaqueQualType());
1446 value.SetCompilerType(compiler_type);
1447
1448 RegisterContext *reg_ctx = thread.GetRegisterContext().get();
1449 if (!reg_ctx)
1450 return return_valobj_sp;
1451
1452 bool is_signed;
1453 bool is_complex;
1454 uint32_t float_count;
1455 bool is_vfp_candidate = false;
1456 uint8_t vfp_count = 0;
1457 uint8_t vfp_byte_size = 0;
1458
1459 // Get the pointer to the first stack argument so we have a place to start
1460 // when reading data
1461
1462 const RegisterInfo *r0_reg_info =
1464 std::optional<uint64_t> bit_width = compiler_type.GetBitSize(&thread);
1465 std::optional<uint64_t> byte_size = compiler_type.GetByteSize(&thread);
1466 if (!bit_width || !byte_size)
1467 return return_valobj_sp;
1468
1469 if (compiler_type.IsIntegerOrEnumerationType(is_signed)) {
1470 switch (*bit_width) {
1471 default:
1472 return return_valobj_sp;
1473 case 64: {
1474 const RegisterInfo *r1_reg_info = reg_ctx->GetRegisterInfo(
1476 uint64_t raw_value;
1477 raw_value = reg_ctx->ReadRegisterAsUnsigned(r0_reg_info, 0) & UINT32_MAX;
1478 raw_value |= ((uint64_t)(reg_ctx->ReadRegisterAsUnsigned(r1_reg_info, 0) &
1479 UINT32_MAX))
1480 << 32;
1481 if (is_signed)
1482 value.GetScalar() = (int64_t)raw_value;
1483 else
1484 value.GetScalar() = (uint64_t)raw_value;
1485 } break;
1486 case 32:
1487 if (is_signed)
1488 value.GetScalar() = (int32_t)(
1489 reg_ctx->ReadRegisterAsUnsigned(r0_reg_info, 0) & UINT32_MAX);
1490 else
1491 value.GetScalar() = (uint32_t)(
1492 reg_ctx->ReadRegisterAsUnsigned(r0_reg_info, 0) & UINT32_MAX);
1493 break;
1494 case 16:
1495 if (is_signed)
1496 value.GetScalar() = (int16_t)(
1497 reg_ctx->ReadRegisterAsUnsigned(r0_reg_info, 0) & UINT16_MAX);
1498 else
1499 value.GetScalar() = (uint16_t)(
1500 reg_ctx->ReadRegisterAsUnsigned(r0_reg_info, 0) & UINT16_MAX);
1501 break;
1502 case 8:
1503 if (is_signed)
1504 value.GetScalar() = (int8_t)(
1505 reg_ctx->ReadRegisterAsUnsigned(r0_reg_info, 0) & UINT8_MAX);
1506 else
1507 value.GetScalar() = (uint8_t)(
1508 reg_ctx->ReadRegisterAsUnsigned(r0_reg_info, 0) & UINT8_MAX);
1509 break;
1510 }
1511 } else if (compiler_type.IsPointerType()) {
1512 uint32_t ptr =
1513 thread.GetRegisterContext()->ReadRegisterAsUnsigned(r0_reg_info, 0) &
1514 UINT32_MAX;
1515 value.GetScalar() = ptr;
1516 } else if (compiler_type.IsVectorType()) {
1517 if (IsArmHardFloat(thread) && (*byte_size == 8 || *byte_size == 16)) {
1518 is_vfp_candidate = true;
1519 vfp_byte_size = 8;
1520 vfp_count = (*byte_size == 8 ? 1 : 2);
1521 } else if (*byte_size <= 16) {
1522 DataBufferHeap buffer(16, 0);
1523 uint32_t *buffer_ptr = (uint32_t *)buffer.GetBytes();
1524
1525 for (uint32_t i = 0; 4 * i < *byte_size; ++i) {
1526 const RegisterInfo *reg_info = reg_ctx->GetRegisterInfo(
1528 buffer_ptr[i] =
1529 reg_ctx->ReadRegisterAsUnsigned(reg_info, 0) & UINT32_MAX;
1530 }
1531 value.SetBytes(buffer.GetBytes(), *byte_size);
1532 } else {
1533 if (!GetReturnValuePassedInMemory(thread, reg_ctx, *byte_size, value))
1534 return return_valobj_sp;
1535 }
1536 } else if (compiler_type.IsFloatingPointType(float_count, is_complex)) {
1537 if (float_count == 1 && !is_complex) {
1538 switch (*bit_width) {
1539 default:
1540 return return_valobj_sp;
1541 case 64: {
1542 static_assert(sizeof(double) == sizeof(uint64_t));
1543
1544 if (IsArmHardFloat(thread)) {
1545 RegisterValue reg_value;
1546 const RegisterInfo *d0_reg_info =
1547 reg_ctx->GetRegisterInfoByName("d0", 0);
1548 reg_ctx->ReadRegister(d0_reg_info, reg_value);
1549 value.GetScalar() = reg_value.GetAsDouble();
1550 } else {
1551 uint64_t raw_value;
1552 const RegisterInfo *r1_reg_info = reg_ctx->GetRegisterInfo(
1554 raw_value =
1555 reg_ctx->ReadRegisterAsUnsigned(r0_reg_info, 0) & UINT32_MAX;
1556 raw_value |=
1557 ((uint64_t)(reg_ctx->ReadRegisterAsUnsigned(r1_reg_info, 0) &
1558 UINT32_MAX))
1559 << 32;
1560 value.GetScalar() = *reinterpret_cast<double *>(&raw_value);
1561 }
1562 break;
1563 }
1564 case 16: // Half precision returned after a conversion to single precision
1565 case 32: {
1566 static_assert(sizeof(float) == sizeof(uint32_t));
1567
1568 if (IsArmHardFloat(thread)) {
1569 RegisterValue reg_value;
1570 const RegisterInfo *s0_reg_info =
1571 reg_ctx->GetRegisterInfoByName("s0", 0);
1572 reg_ctx->ReadRegister(s0_reg_info, reg_value);
1573 value.GetScalar() = reg_value.GetAsFloat();
1574 } else {
1575 uint32_t raw_value;
1576 raw_value =
1577 reg_ctx->ReadRegisterAsUnsigned(r0_reg_info, 0) & UINT32_MAX;
1578 value.GetScalar() = *reinterpret_cast<float *>(&raw_value);
1579 }
1580 break;
1581 }
1582 }
1583 } else if (is_complex && float_count == 2) {
1584 if (IsArmHardFloat(thread)) {
1585 is_vfp_candidate = true;
1586 vfp_byte_size = *byte_size / 2;
1587 vfp_count = 2;
1588 } else if (!GetReturnValuePassedInMemory(thread, reg_ctx, *bit_width / 8,
1589 value))
1590 return return_valobj_sp;
1591 } else
1592 // not handled yet
1593 return return_valobj_sp;
1594 } else if (compiler_type.IsAggregateType()) {
1595 if (IsArmHardFloat(thread)) {
1596 CompilerType base_type;
1597 const uint32_t homogeneous_count =
1598 compiler_type.IsHomogeneousAggregate(&base_type);
1599
1600 if (homogeneous_count > 0 && homogeneous_count <= 4) {
1601 std::optional<uint64_t> base_byte_size = base_type.GetByteSize(&thread);
1602 if (base_type.IsVectorType()) {
1603 if (base_byte_size &&
1604 (*base_byte_size == 8 || *base_byte_size == 16)) {
1605 is_vfp_candidate = true;
1606 vfp_byte_size = 8;
1607 vfp_count = (*base_byte_size == 8 ? homogeneous_count
1608 : homogeneous_count * 2);
1609 }
1610 } else if (base_type.IsFloatingPointType(float_count, is_complex)) {
1611 if (float_count == 1 && !is_complex) {
1612 is_vfp_candidate = true;
1613 if (base_byte_size)
1614 vfp_byte_size = *base_byte_size;
1615 vfp_count = homogeneous_count;
1616 }
1617 }
1618 } else if (homogeneous_count == 0) {
1619 const uint32_t num_children = compiler_type.GetNumFields();
1620
1621 if (num_children > 0 && num_children <= 2) {
1622 uint32_t index = 0;
1623 for (index = 0; index < num_children; index++) {
1624 std::string name;
1625 base_type = compiler_type.GetFieldAtIndex(index, name, nullptr,
1626 nullptr, nullptr);
1627
1628 if (base_type.IsFloatingPointType(float_count, is_complex)) {
1629 std::optional<uint64_t> base_byte_size =
1630 base_type.GetByteSize(&thread);
1631 if (float_count == 2 && is_complex) {
1632 if (index != 0 && base_byte_size &&
1633 vfp_byte_size != *base_byte_size)
1634 break;
1635 else if (base_byte_size)
1636 vfp_byte_size = *base_byte_size;
1637 } else
1638 break;
1639 } else
1640 break;
1641 }
1642
1643 if (index == num_children) {
1644 is_vfp_candidate = true;
1645 vfp_byte_size = (vfp_byte_size >> 1);
1646 vfp_count = (num_children << 1);
1647 }
1648 }
1649 }
1650 }
1651
1652 if (*byte_size <= 4) {
1653 RegisterValue r0_reg_value;
1654 uint32_t raw_value =
1655 reg_ctx->ReadRegisterAsUnsigned(r0_reg_info, 0) & UINT32_MAX;
1656 value.SetBytes(&raw_value, *byte_size);
1657 } else if (!is_vfp_candidate) {
1658 if (!GetReturnValuePassedInMemory(thread, reg_ctx, *byte_size, value))
1659 return return_valobj_sp;
1660 }
1661 } else {
1662 // not handled yet
1663 return return_valobj_sp;
1664 }
1665
1666 if (is_vfp_candidate) {
1667 ProcessSP process_sp(thread.GetProcess());
1668 ByteOrder byte_order = process_sp->GetByteOrder();
1669
1670 WritableDataBufferSP data_sp(new DataBufferHeap(*byte_size, 0));
1671 uint32_t data_offset = 0;
1672
1673 for (uint32_t reg_index = 0; reg_index < vfp_count; reg_index++) {
1674 uint32_t regnum = 0;
1675
1676 if (vfp_byte_size == 4)
1677 regnum = dwarf_s0 + reg_index;
1678 else if (vfp_byte_size == 8)
1679 regnum = dwarf_d0 + reg_index;
1680 else
1681 break;
1682
1683 const RegisterInfo *reg_info =
1684 reg_ctx->GetRegisterInfo(eRegisterKindDWARF, regnum);
1685 if (reg_info == nullptr)
1686 break;
1687
1688 RegisterValue reg_value;
1689 if (!reg_ctx->ReadRegister(reg_info, reg_value))
1690 break;
1691
1692 // Make sure we have enough room in "data_sp"
1693 if ((data_offset + vfp_byte_size) <= data_sp->GetByteSize()) {
1694 Status error;
1695 const size_t bytes_copied = reg_value.GetAsMemoryData(
1696 *reg_info, data_sp->GetBytes() + data_offset, vfp_byte_size,
1697 byte_order, error);
1698 if (bytes_copied != vfp_byte_size)
1699 break;
1700
1701 data_offset += bytes_copied;
1702 }
1703 }
1704
1705 if (data_offset == *byte_size) {
1706 DataExtractor data;
1707 data.SetByteOrder(byte_order);
1708 data.SetAddressByteSize(process_sp->GetAddressByteSize());
1709 data.SetData(data_sp);
1710
1711 return ValueObjectConstResult::Create(&thread, compiler_type,
1712 ConstString(""), data);
1713 } else { // Some error occurred while getting values from registers
1714 return return_valobj_sp;
1715 }
1716 }
1717
1718 // If we get here, we have a valid Value, so make our ValueObject out of it:
1719
1720 return_valobj_sp = ValueObjectConstResult::Create(
1721 thread.GetStackFrameAtIndex(0).get(), value, ConstString(""));
1722 return return_valobj_sp;
1723}
1724
1725Status ABISysV_arm::SetReturnValueObject(lldb::StackFrameSP &frame_sp,
1726 lldb::ValueObjectSP &new_value_sp) {
1727 Status error;
1728 if (!new_value_sp) {
1729 error.SetErrorString("Empty value object for return value.");
1730 return error;
1731 }
1732
1733 CompilerType compiler_type = new_value_sp->GetCompilerType();
1734 if (!compiler_type) {
1735 error.SetErrorString("Null clang type for return value.");
1736 return error;
1737 }
1738
1739 Thread *thread = frame_sp->GetThread().get();
1740
1741 bool is_signed;
1742 uint32_t count;
1743 bool is_complex;
1744
1745 RegisterContext *reg_ctx = thread->GetRegisterContext().get();
1746
1747 bool set_it_simple = false;
1748 if (compiler_type.IsIntegerOrEnumerationType(is_signed) ||
1749 compiler_type.IsPointerType()) {
1750 DataExtractor data;
1751 Status data_error;
1752 size_t num_bytes = new_value_sp->GetData(data, data_error);
1753 if (data_error.Fail()) {
1754 error.SetErrorStringWithFormat(
1755 "Couldn't convert return value to raw data: %s",
1756 data_error.AsCString());
1757 return error;
1758 }
1759 lldb::offset_t offset = 0;
1760 if (num_bytes <= 8) {
1761 const RegisterInfo *r0_info = reg_ctx->GetRegisterInfo(
1763 if (num_bytes <= 4) {
1764 uint32_t raw_value = data.GetMaxU32(&offset, num_bytes);
1765
1766 if (reg_ctx->WriteRegisterFromUnsigned(r0_info, raw_value))
1767 set_it_simple = true;
1768 } else {
1769 uint32_t raw_value = data.GetMaxU32(&offset, 4);
1770
1771 if (reg_ctx->WriteRegisterFromUnsigned(r0_info, raw_value)) {
1772 const RegisterInfo *r1_info = reg_ctx->GetRegisterInfo(
1774 uint32_t raw_value = data.GetMaxU32(&offset, num_bytes - offset);
1775
1776 if (reg_ctx->WriteRegisterFromUnsigned(r1_info, raw_value))
1777 set_it_simple = true;
1778 }
1779 }
1780 } else {
1781 error.SetErrorString("We don't support returning longer than 64 bit "
1782 "integer values at present.");
1783 }
1784 } else if (compiler_type.IsFloatingPointType(count, is_complex)) {
1785 if (is_complex)
1786 error.SetErrorString(
1787 "We don't support returning complex values at present");
1788 else
1789 error.SetErrorString(
1790 "We don't support returning float values at present");
1791 }
1792
1793 if (!set_it_simple)
1794 error.SetErrorString(
1795 "We only support setting simple integer return types at present.");
1796
1797 return error;
1798}
1799
1801 unwind_plan.Clear();
1803
1804 uint32_t lr_reg_num = dwarf_lr;
1805 uint32_t sp_reg_num = dwarf_sp;
1806 uint32_t pc_reg_num = dwarf_pc;
1807
1809
1810 // Our Call Frame Address is the stack pointer value
1811 row->GetCFAValue().SetIsRegisterPlusOffset(sp_reg_num, 0);
1812
1813 // The previous PC is in the LR
1814 row->SetRegisterLocationToRegister(pc_reg_num, lr_reg_num, true);
1815 unwind_plan.AppendRow(row);
1816
1817 // All other registers are the same.
1818
1819 unwind_plan.SetSourceName("arm at-func-entry default");
1821
1822 return true;
1823}
1824
1826 unwind_plan.Clear();
1828
1829 // TODO: Handle thumb
1830 uint32_t fp_reg_num = dwarf_r11;
1831 uint32_t pc_reg_num = dwarf_pc;
1832
1834 const int32_t ptr_size = 4;
1835
1836 row->GetCFAValue().SetIsRegisterPlusOffset(fp_reg_num, 2 * ptr_size);
1837 row->SetOffset(0);
1838 row->SetUnspecifiedRegistersAreUndefined(true);
1839
1840 row->SetRegisterLocationToAtCFAPlusOffset(fp_reg_num, ptr_size * -2, true);
1841 row->SetRegisterLocationToAtCFAPlusOffset(pc_reg_num, ptr_size * -1, true);
1842
1843 unwind_plan.AppendRow(row);
1844 unwind_plan.SetSourceName("arm default unwind plan");
1848
1849 return true;
1850}
1851
1852// cf. "ARMv6 Function Calling Conventions"
1853
1854// ARMv7 on GNU/Linux general purpose reg rules:
1855// r0-r3 not preserved (used for argument passing)
1856// r4-r11 preserved (v1-v8)
1857// r12 not presrved
1858// r13 preserved (stack pointer)
1859// r14 preserved (link register)
1860// r15 preserved (pc)
1861// cpsr not preserved (different rules for different bits)
1862
1863// ARMv7 VFP register rules:
1864// d0-d7 not preserved (aka s0-s15, q0-q3)
1865// d8-d15 preserved (aka s16-s31, q4-q7)
1866// d16-d31 not preserved (aka q8-q15)
1867
1868bool ABISysV_arm::RegisterIsVolatile(const RegisterInfo *reg_info) {
1869 if (reg_info) {
1870 // Volatile registers are: r0, r1, r2, r3, r9, r12, r13 (aka sp)
1871 const char *name = reg_info->name;
1872 if (name[0] == 'r') {
1873 switch (name[1]) {
1874 case '0':
1875 return name[2] == '\0'; // r0
1876 case '1':
1877 switch (name[2]) {
1878 case '\0':
1879 return true; // r1
1880 case '2':
1881 return name[3] == '\0'; // r12
1882 default:
1883 break;
1884 }
1885 break;
1886
1887 case '2':
1888 return name[2] == '\0'; // r2
1889 case '3':
1890 return name[2] == '\0'; // r3
1891 default:
1892 break;
1893 }
1894 } else if (name[0] == 'd') {
1895 switch (name[1]) {
1896 case '0':
1897 return name[2] == '\0'; // d0 is volatile
1898
1899 case '1':
1900 switch (name[2]) {
1901 case '\0':
1902 return true; // d1 is volatile
1903 case '6':
1904 case '7':
1905 case '8':
1906 case '9':
1907 return name[3] == '\0'; // d16 - d19 are volatile
1908 default:
1909 break;
1910 }
1911 break;
1912
1913 case '2':
1914 switch (name[2]) {
1915 case '\0':
1916 return true; // d2 is volatile
1917 case '0':
1918 case '1':
1919 case '2':
1920 case '3':
1921 case '4':
1922 case '5':
1923 case '6':
1924 case '7':
1925 case '8':
1926 case '9':
1927 return name[3] == '\0'; // d20 - d29 are volatile
1928 default:
1929 break;
1930 }
1931 break;
1932
1933 case '3':
1934 switch (name[2]) {
1935 case '\0':
1936 return true; // d3 is volatile
1937 case '0':
1938 case '1':
1939 return name[3] == '\0'; // d30 - d31 are volatile
1940 default:
1941 break;
1942 }
1943 break;
1944 case '4':
1945 case '5':
1946 case '6':
1947 case '7':
1948 return name[2] == '\0'; // d4 - d7 are volatile
1949
1950 default:
1951 break;
1952 }
1953 } else if (name[0] == 's') {
1954 switch (name[1]) {
1955 case '0':
1956 return name[2] == '\0'; // s0 is volatile
1957
1958 case '1':
1959 switch (name[2]) {
1960 case '\0':
1961 return true; // s1 is volatile
1962 case '0':
1963 case '1':
1964 case '2':
1965 case '3':
1966 case '4':
1967 case '5':
1968 return name[3] == '\0'; // s10 - s15 are volatile
1969 default:
1970 break;
1971 }
1972 break;
1973
1974 case '2':
1975 case '3':
1976 case '4':
1977 case '5':
1978 case '6':
1979 case '7':
1980 case '8':
1981 case '9':
1982 return name[2] == '\0'; // s2 - s9 are volatile
1983
1984 default:
1985 break;
1986 }
1987 } else if (name[0] == 'q') {
1988 switch (name[1]) {
1989 case '1':
1990 switch (name[2]) {
1991 case '\0':
1992 return true; // q1 is volatile
1993 case '0':
1994 case '1':
1995 case '2':
1996 case '3':
1997 case '4':
1998 case '5':
1999 return true; // q10-q15 are volatile
2000 default:
2001 return false;
2002 }
2003 break;
2004
2005 case '0':
2006 case '2':
2007 case '3':
2008 return name[2] == '\0'; // q0-q3 are volatile
2009 case '8':
2010 case '9':
2011 return name[2] == '\0'; // q8-q9 are volatile
2012 default:
2013 break;
2014 }
2015 } else if (name[0] == 's' && name[1] == 'p' && name[2] == '\0')
2016 return true;
2017 }
2018 return false;
2019}
2020
2023 "SysV ABI for arm targets", CreateInstance);
2024}
2025
2028}
static const uint32_t k_num_register_infos
static const RegisterInfo g_register_infos[]
static const uint32_t k_num_register_infos
static bool GetReturnValuePassedInMemory(Thread &thread, RegisterContext *reg_ctx, size_t byte_size, Value &value)
static const RegisterInfo g_register_infos[]
Definition: ABISysV_arm.cpp:40
@ dwarf_r7
@ dwarf_r12
@ dwarf_r3
@ dwarf_r2
@ dwarf_r8
@ dwarf_r11
@ dwarf_r1
@ dwarf_r9
@ dwarf_pc
@ dwarf_r10
@ dwarf_r6
@ dwarf_r0
@ dwarf_r5
@ dwarf_r4
@ dwarf_lr
#define MASK_CPSR_T
Definition: ARMDefines.h:176
@ dwarf_s15
@ dwarf_s30
@ dwarf_s12
@ dwarf_r8_usr
@ dwarf_s18
@ dwarf_s8
@ dwarf_s27
@ dwarf_s5
@ dwarf_r14_abt
@ dwarf_s14
@ dwarf_s4
@ dwarf_r11_fiq
@ dwarf_d18
@ dwarf_r13_irq
@ dwarf_r14_svc
@ dwarf_d1
@ dwarf_s2
@ dwarf_d2
@ dwarf_r14_usr
@ dwarf_d5
@ dwarf_r11_usr
@ dwarf_s3
@ dwarf_d11
@ dwarf_s10
@ dwarf_s21
@ dwarf_r10_fiq
@ dwarf_s26
@ dwarf_s20
@ dwarf_r14_und
@ dwarf_d28
@ dwarf_d12
@ dwarf_d17
@ dwarf_d21
@ dwarf_d10
@ dwarf_d7
@ dwarf_r13_und
@ dwarf_d29
@ dwarf_s6
@ dwarf_d23
@ dwarf_s23
@ dwarf_d25
@ dwarf_s19
@ dwarf_s28
@ dwarf_s29
@ dwarf_sp
@ dwarf_d8
@ dwarf_r13_abt
@ dwarf_s17
@ dwarf_d24
@ dwarf_r9_fiq
@ dwarf_d27
@ dwarf_s13
@ dwarf_r9_usr
@ dwarf_d13
@ dwarf_d22
@ dwarf_r13_usr
@ dwarf_s0
@ dwarf_s7
@ dwarf_r14_fiq
@ dwarf_d15
@ dwarf_d9
@ dwarf_d6
@ dwarf_r14_irq
@ dwarf_r13_fiq
@ dwarf_s1
@ dwarf_r8_fiq
@ dwarf_d16
@ dwarf_s31
@ dwarf_d4
@ dwarf_cpsr
@ dwarf_s16
@ dwarf_s24
@ dwarf_d19
@ dwarf_r10_usr
@ dwarf_d20
@ dwarf_d0
@ dwarf_d3
@ dwarf_d30
@ dwarf_r13_svc
@ dwarf_d14
@ dwarf_s22
@ dwarf_r12_fiq
@ dwarf_d31
@ dwarf_s25
@ dwarf_r12_usr
@ dwarf_s9
@ dwarf_s11
@ dwarf_d26
@ ehframe_r9
@ ehframe_pc
@ ehframe_lr
@ ehframe_r2
@ ehframe_r5
@ ehframe_r10
@ ehframe_sp
@ ehframe_r1
@ ehframe_r0
@ ehframe_r11
@ ehframe_r4
@ ehframe_r8
@ ehframe_r3
@ ehframe_r6
@ ehframe_cpsr
@ ehframe_r7
@ ehframe_r12
static llvm::raw_ostream & error(Stream &strm)
#define LLDB_PLUGIN_DEFINE(PluginName)
Definition: PluginManager.h:31
bool GetArgumentValues(lldb_private::Thread &thread, lldb_private::ValueList &values) const override
bool CreateFunctionEntryUnwindPlan(lldb_private::UnwindPlan &unwind_plan) override
bool IsArmHardFloat(lldb_private::Thread &thread) const
lldb::ValueObjectSP GetReturnValueObjectImpl(lldb_private::Thread &thread, lldb_private::CompilerType &ast_type) const override
bool RegisterIsVolatile(const lldb_private::RegisterInfo *reg_info) override
static lldb::ABISP CreateInstance(lldb::ProcessSP process_sp, const lldb_private::ArchSpec &arch)
bool PrepareTrivialCall(lldb_private::Thread &thread, lldb::addr_t sp, lldb::addr_t func_addr, lldb::addr_t returnAddress, llvm::ArrayRef< lldb::addr_t > args) const override
static void Initialize()
lldb_private::Status SetReturnValueObject(lldb::StackFrameSP &frame_sp, lldb::ValueObjectSP &new_value) override
static llvm::StringRef GetPluginNameStatic()
Definition: ABISysV_arm.h:74
bool CreateDefaultUnwindPlan(lldb_private::UnwindPlan &unwind_plan) override
const lldb_private::RegisterInfo * GetRegisterInfoArray(uint32_t &count) override
static void Terminate()
size_t GetRedZoneSize() const override
static std::unique_ptr< llvm::MCRegisterInfo > MakeMCRegisterInfo(const ArchSpec &arch)
Utility function to construct a MCRegisterInfo using the ArchSpec triple.
Definition: ABI.cpp:201
A section + offset based address class.
Definition: Address.h:59
lldb::addr_t GetCallableLoadAddress(Target *target, bool is_indirect=false) const
Get the load address as a callable code load address.
Definition: Address.cpp:336
bool SetLoadAddress(lldb::addr_t load_addr, Target *target, bool allow_section_end=false)
Set the address to represent load_addr.
Definition: Address.cpp:1040
An architecture specification class.
Definition: ArchSpec.h:32
llvm::Triple & GetTriple()
Architecture triple accessor.
Definition: ArchSpec.h:463
uint32_t GetFlags() const
Definition: ArchSpec.h:539
Generic representation of a type in a programming language.
Definition: CompilerType.h:36
std::optional< uint64_t > GetByteSize(ExecutionContextScope *exe_scope) const
Return the size of the type in bytes.
uint32_t IsHomogeneousAggregate(CompilerType *base_type_ptr) const
CompilerType GetFieldAtIndex(size_t idx, std::string &name, uint64_t *bit_offset_ptr, uint32_t *bitfield_bit_size_ptr, bool *is_bitfield_ptr) const
bool IsFloatingPointType(uint32_t &count, bool &is_complex) const
uint32_t GetNumFields() const
bool IsIntegerOrEnumerationType(bool &is_signed) const
std::optional< uint64_t > GetBitSize(ExecutionContextScope *exe_scope) const
Return the size of the type in bits.
bool IsVectorType(CompilerType *element_type=nullptr, uint64_t *size=nullptr) const
bool IsPointerOrReferenceType(CompilerType *pointee_type=nullptr) const
bool IsPointerType(CompilerType *pointee_type=nullptr) const
A uniqued constant string class.
Definition: ConstString.h:39
A subclass of DataBuffer that stores a data buffer on the heap.
lldb::offset_t GetByteSize() const override
An data extractor class.
Definition: DataExtractor.h:48
uint32_t GetMaxU32(lldb::offset_t *offset_ptr, size_t byte_size) const
Extract an integer of size byte_size from *offset_ptr.
void SetByteOrder(lldb::ByteOrder byte_order)
Set the byte_order value.
lldb::offset_t SetData(const void *bytes, lldb::offset_t length, lldb::ByteOrder byte_order)
Set data with a buffer that is caller owned.
void SetAddressByteSize(uint32_t addr_size)
Set the address byte size.
"lldb/Target/ExecutionContext.h" A class that contains an execution context.
Process & GetProcessRef() const
Returns a reference to the process object.
static bool RegisterPlugin(llvm::StringRef name, llvm::StringRef description, ABICreateInstance create_callback)
static bool UnregisterPlugin(ABICreateInstance create_callback)
size_t ReadScalarIntegerFromMemory(lldb::addr_t addr, uint32_t byte_size, bool is_signed, Scalar &scalar, Status &error)
Definition: Process.cpp:2224
uint32_t GetAddressByteSize() const
Definition: Process.cpp:3383
virtual uint32_t ConvertRegisterKindToRegisterNumber(lldb::RegisterKind kind, uint32_t num)
Convert from a given register numbering scheme to the lldb register numbering scheme.
uint64_t ReadRegisterAsUnsigned(uint32_t reg, uint64_t fail_value)
uint64_t GetSP(uint64_t fail_value=LLDB_INVALID_ADDRESS)
virtual bool WriteRegister(const RegisterInfo *reg_info, const RegisterValue &reg_value)=0
const RegisterInfo * GetRegisterInfo(lldb::RegisterKind reg_kind, uint32_t reg_num)
bool WriteRegisterFromUnsigned(uint32_t reg, uint64_t uval)
const RegisterInfo * GetRegisterInfoByName(llvm::StringRef reg_name, uint32_t start_idx=0)
virtual bool ReadRegister(const RegisterInfo *reg_info, RegisterValue &reg_value)=0
bool SignExtend(uint32_t sign_bitpos)
double GetAsDouble(double fail_value=0.0, bool *success_ptr=nullptr) const
uint32_t GetAsMemoryData(const RegisterInfo &reg_info, void *dst, uint32_t dst_len, lldb::ByteOrder dst_byte_order, Status &error) const
float GetAsFloat(float fail_value=0.0f, bool *success_ptr=nullptr) const
bool GetScalarValue(Scalar &scalar) const
void SetUInt32(uint32_t uint, Type t=eTypeUInt32)
An error handling class.
Definition: Status.h:44
bool Fail() const
Test for error condition.
Definition: Status.cpp:181
const char * AsCString(const char *default_error_str="unknown error") const
Get the error string associated with the current error.
Definition: Status.cpp:130
virtual lldb::StackFrameSP GetStackFrameAtIndex(uint32_t idx)
Definition: Thread.h:399
virtual lldb::RegisterContextSP GetRegisterContext()=0
lldb::TargetSP CalculateTarget() override
Definition: Thread.cpp:1406
lldb::ProcessSP GetProcess() const
Definition: Thread.h:153
void SetUnwindPlanForSignalTrap(lldb_private::LazyBool is_for_signal_trap)
Definition: UnwindPlan.h:502
void SetRegisterKind(lldb::RegisterKind kind)
Definition: UnwindPlan.h:437
void AppendRow(const RowSP &row_sp)
Definition: UnwindPlan.cpp:362
std::shared_ptr< Row > RowSP
Definition: UnwindPlan.h:395
void SetSourcedFromCompiler(lldb_private::LazyBool from_compiler)
Definition: UnwindPlan.h:478
void SetSourceName(const char *)
Definition: UnwindPlan.cpp:564
void SetUnwindPlanValidAtAllInstructions(lldb_private::LazyBool valid_at_all_insn)
Definition: UnwindPlan.h:490
Value * GetValueAtIndex(size_t idx)
Definition: Value.cpp:670
static lldb::ValueObjectSP Create(ExecutionContextScope *exe_scope, lldb::ByteOrder byte_order, uint32_t addr_byte_size, lldb::addr_t address=LLDB_INVALID_ADDRESS)
const Scalar & GetScalar() const
Definition: Value.h:112
void SetCompilerType(const CompilerType &compiler_type)
Definition: Value.cpp:252
const CompilerType & GetCompilerType()
Definition: Value.cpp:223
void SetBytes(const void *bytes, int len)
Definition: Value.cpp:88
#define LLDB_REGNUM_GENERIC_RA
Definition: lldb-defines.h:54
#define LLDB_REGNUM_GENERIC_SP
Definition: lldb-defines.h:52
#define LLDB_REGNUM_GENERIC_ARG4
Definition: lldb-defines.h:62
#define LLDB_REGNUM_GENERIC_ARG3
Definition: lldb-defines.h:60
#define LLDB_REGNUM_GENERIC_ARG1
Definition: lldb-defines.h:56
#define LLDB_REGNUM_GENERIC_FLAGS
Definition: lldb-defines.h:55
#define UINT32_MAX
Definition: lldb-defines.h:19
#define LLDB_INVALID_REGNUM
Definition: lldb-defines.h:79
#define LLDB_REGNUM_GENERIC_ARG2
Definition: lldb-defines.h:58
#define LLDB_REGNUM_GENERIC_PC
Definition: lldb-defines.h:51
#define LLDB_REGNUM_GENERIC_FP
Definition: lldb-defines.h:53
A class that represents a running process on the host machine.
Definition: SBAttachInfo.h:14
Definition: SBAddress.h:15
uint64_t offset_t
Definition: lldb-types.h:87
@ eEncodingIEEE754
float
@ eEncodingUint
unsigned integer
ByteOrder
Byte ordering definitions.
uint64_t addr_t
Definition: lldb-types.h:83
@ eRegisterKindGeneric
insn ptr reg, stack ptr reg, etc not specific to any particular target
@ eRegisterKindDWARF
the register numbers seen DWARF