authorgravatar for andrew@ziglang.orgAndrew Kelley <andrew@ziglang.org> 2018-02-07 17:38:02-05:00
committergravatar for andrew@ziglang.orgAndrew Kelley <andrew@ziglang.org> 2018-02-07 17:38:02-05:00
log38aed5af8bdefd13a355fc0728c6ad57e5efa3ff
tree79eb22695fd67db1bf3253a2b1ffe70a975342c8
parentaa043a633904b6685a201000a0ab2a62fc3bdb91

update embedded LLD to 6.0.0rc2

31 files changed, 856 insertions(+), 45 deletions(-)

deps/lld-prebuilt/ELF/Options.inc+2-2
...@@ -230,6 +230,8 @@ OPTION(prefix_2, "no-merge-exidx-entries", no_merge_exidx_entries, Flag, INVALID...@@ -230,6 +230,8 @@ OPTION(prefix_2, "no-merge-exidx-entries", no_merge_exidx_entries, Flag, INVALID
230OPTION(prefix_2, "no-mmap-output-file", no_mmap_output_file, Flag, INVALID, INVALID, nullptr, 0, 0, nullptr, nullptr, nullptr)230OPTION(prefix_2, "no-mmap-output-file", no_mmap_output_file, Flag, INVALID, INVALID, nullptr, 0, 0, nullptr, nullptr, nullptr)
231OPTION(prefix_3, "no-omagic", no_omagic, Flag, INVALID, INVALID, nullptr, 0, 0,231OPTION(prefix_3, "no-omagic", no_omagic, Flag, INVALID, INVALID, nullptr, 0, 0,
232 "Do not set the text data sections to be writable", "<magic>", nullptr)232 "Do not set the text data sections to be writable", "<magic>", nullptr)
233OPTION(prefix_2, "no-pie", no_pie, Flag, INVALID, INVALID, nullptr, 0, 0,
234 "Do not create a position independent executable", nullptr, nullptr)
233OPTION(prefix_2, "no-print-gc-sections", no_print_gc_sections, Flag, INVALID, INVALID, nullptr, 0, 0,235OPTION(prefix_2, "no-print-gc-sections", no_print_gc_sections, Flag, INVALID, INVALID, nullptr, 0, 0,
234 "Do not list removed unused sections", nullptr, nullptr)236 "Do not list removed unused sections", nullptr, nullptr)
235OPTION(prefix_2, "no-rosegment", no_rosegment, Flag, INVALID, INVALID, nullptr, 0, 0,237OPTION(prefix_2, "no-rosegment", no_rosegment, Flag, INVALID, INVALID, nullptr, 0, 0,
...@@ -247,8 +249,6 @@ OPTION(prefix_2, "no-whole-archive", no_whole_archive, Flag, INVALID, INVALID, n...@@ -247,8 +249,6 @@ OPTION(prefix_2, "no-whole-archive", no_whole_archive, Flag, INVALID, INVALID, n
247OPTION(prefix_2, "noinhibit-exec", noinhibit_exec, Flag, INVALID, INVALID, nullptr, 0, 0,249OPTION(prefix_2, "noinhibit-exec", noinhibit_exec, Flag, INVALID, INVALID, nullptr, 0, 0,
248 "Retain the executable output file whenever it is still usable", nullptr, nullptr)250 "Retain the executable output file whenever it is still usable", nullptr, nullptr)
249OPTION(prefix_2, "non_shared", alias_Bstatic_non_shared, Flag, INVALID, Bstatic, nullptr, 0, 0, nullptr, nullptr, nullptr)251OPTION(prefix_2, "non_shared", alias_Bstatic_non_shared, Flag, INVALID, Bstatic, nullptr, 0, 0, nullptr, nullptr, nullptr)
250OPTION(prefix_2, "nopie", nopie, Flag, INVALID, INVALID, nullptr, 0, 0,
251 "Do not create a position independent executable", nullptr, nullptr)
252OPTION(prefix_2, "nostdlib", nostdlib, Flag, INVALID, INVALID, nullptr, 0, 0,252OPTION(prefix_2, "nostdlib", nostdlib, Flag, INVALID, INVALID, nullptr, 0, 0,
253 "Only search directories specified on the command line", nullptr, nullptr)253 "Only search directories specified on the command line", nullptr, nullptr)
254OPTION(prefix_1, "N", alias_omagic, Flag, INVALID, omagic, nullptr, 0, 0, nullptr, nullptr, nullptr)254OPTION(prefix_1, "N", alias_omagic, Flag, INVALID, omagic, nullptr, 0, 0, nullptr, nullptr, nullptr)
deps/lld/ELF/AArch64ErrataFix.cpp+2-1
...@@ -47,6 +47,7 @@...@@ -47,6 +47,7 @@
47using namespace llvm;47using namespace llvm;
48using namespace llvm::ELF;48using namespace llvm::ELF;
49using namespace llvm::object;49using namespace llvm::object;
50using namespace llvm::support;
50using namespace llvm::support::endian;51using namespace llvm::support::endian;
5152
52using namespace lld;53using namespace lld;
...@@ -357,7 +358,7 @@ static uint64_t scanCortexA53Errata843419(InputSection *IS, uint64_t &Off,...@@ -357,7 +358,7 @@ static uint64_t scanCortexA53Errata843419(InputSection *IS, uint64_t &Off,
357358
358 uint64_t PatchOff = 0;359 uint64_t PatchOff = 0;
359 const uint8_t *Buf = IS->Data.begin();360 const uint8_t *Buf = IS->Data.begin();
360 const uint32_t *InstBuf = reinterpret_cast<const uint32_t *>(Buf + Off);361 const ulittle32_t *InstBuf = reinterpret_cast<const ulittle32_t *>(Buf + Off);
361 uint32_t Instr1 = *InstBuf++;362 uint32_t Instr1 = *InstBuf++;
362 uint32_t Instr2 = *InstBuf++;363 uint32_t Instr2 = *InstBuf++;
363 uint32_t Instr3 = *InstBuf++;364 uint32_t Instr3 = *InstBuf++;
deps/lld/ELF/Arch/X86.cpp+141-3
...@@ -21,7 +21,7 @@ using namespace lld;...@@ -21,7 +21,7 @@ using namespace lld;
21using namespace lld::elf;21using namespace lld::elf;
2222
23namespace {23namespace {
24class X86 final : public TargetInfo {24class X86 : public TargetInfo {
25public:25public:
26 X86();26 X86();
27 RelExpr getRelExpr(RelType Type, const Symbol &S,27 RelExpr getRelExpr(RelType Type, const Symbol &S,
...@@ -399,7 +399,145 @@ void X86::relaxTlsLdToLe(uint8_t *Loc, RelType Type, uint64_t Val) const {...@@ -399,7 +399,145 @@ void X86::relaxTlsLdToLe(uint8_t *Loc, RelType Type, uint64_t Val) const {
399 memcpy(Loc - 2, Inst, sizeof(Inst));399 memcpy(Loc - 2, Inst, sizeof(Inst));
400}400}
401401
402namespace {
403class RetpolinePic : public X86 {
404public:
405 RetpolinePic();
406 void writeGotPlt(uint8_t *Buf, const Symbol &S) const override;
407 void writePltHeader(uint8_t *Buf) const override;
408 void writePlt(uint8_t *Buf, uint64_t GotPltEntryAddr, uint64_t PltEntryAddr,
409 int32_t Index, unsigned RelOff) const override;
410};
411
412class RetpolineNoPic : public X86 {
413public:
414 RetpolineNoPic();
415 void writeGotPlt(uint8_t *Buf, const Symbol &S) const override;
416 void writePltHeader(uint8_t *Buf) const override;
417 void writePlt(uint8_t *Buf, uint64_t GotPltEntryAddr, uint64_t PltEntryAddr,
418 int32_t Index, unsigned RelOff) const override;
419};
420} // namespace
421
422RetpolinePic::RetpolinePic() {
423 PltHeaderSize = 48;
424 PltEntrySize = 32;
425}
426
427void RetpolinePic::writeGotPlt(uint8_t *Buf, const Symbol &S) const {
428 write32le(Buf, S.getPltVA() + 17);
429}
430
431void RetpolinePic::writePltHeader(uint8_t *Buf) const {
432 const uint8_t Insn[] = {
433 0xff, 0xb3, 0, 0, 0, 0, // 0: pushl GOTPLT+4(%ebx)
434 0x50, // 6: pushl %eax
435 0x8b, 0x83, 0, 0, 0, 0, // 7: mov GOTPLT+8(%ebx), %eax
436 0xe8, 0x0e, 0x00, 0x00, 0x00, // d: call next
437 0xf3, 0x90, // 12: loop: pause
438 0x0f, 0xae, 0xe8, // 14: lfence
439 0xeb, 0xf9, // 17: jmp loop
440 0xcc, 0xcc, 0xcc, 0xcc, 0xcc, 0xcc, 0xcc, // 19: int3; .align 16
441 0x89, 0x0c, 0x24, // 20: next: mov %ecx, (%esp)
442 0x8b, 0x4c, 0x24, 0x04, // 23: mov 0x4(%esp), %ecx
443 0x89, 0x44, 0x24, 0x04, // 27: mov %eax ,0x4(%esp)
444 0x89, 0xc8, // 2b: mov %ecx, %eax
445 0x59, // 2d: pop %ecx
446 0xc3, // 2e: ret
447 };
448 memcpy(Buf, Insn, sizeof(Insn));
449
450 uint32_t Ebx = InX::Got->getVA() + InX::Got->getSize();
451 uint32_t GotPlt = InX::GotPlt->getVA() - Ebx;
452 write32le(Buf + 2, GotPlt + 4);
453 write32le(Buf + 9, GotPlt + 8);
454}
455
456void RetpolinePic::writePlt(uint8_t *Buf, uint64_t GotPltEntryAddr,
457 uint64_t PltEntryAddr, int32_t Index,
458 unsigned RelOff) const {
459 const uint8_t Insn[] = {
460 0x50, // pushl %eax
461 0x8b, 0x83, 0, 0, 0, 0, // mov foo@GOT(%ebx), %eax
462 0xe8, 0, 0, 0, 0, // call plt+0x20
463 0xe9, 0, 0, 0, 0, // jmp plt+0x12
464 0x68, 0, 0, 0, 0, // pushl $reloc_offset
465 0xe9, 0, 0, 0, 0, // jmp plt+0
466 };
467 memcpy(Buf, Insn, sizeof(Insn));
468
469 uint32_t Ebx = InX::Got->getVA() + InX::Got->getSize();
470 write32le(Buf + 3, GotPltEntryAddr - Ebx);
471 write32le(Buf + 8, -Index * PltEntrySize - PltHeaderSize - 12 + 32);
472 write32le(Buf + 13, -Index * PltEntrySize - PltHeaderSize - 17 + 18);
473 write32le(Buf + 18, RelOff);
474 write32le(Buf + 23, -Index * PltEntrySize - PltHeaderSize - 27);
475}
476
477RetpolineNoPic::RetpolineNoPic() {
478 PltHeaderSize = 48;
479 PltEntrySize = 32;
480}
481
482void RetpolineNoPic::writeGotPlt(uint8_t *Buf, const Symbol &S) const {
483 write32le(Buf, S.getPltVA() + 16);
484}
485
486void RetpolineNoPic::writePltHeader(uint8_t *Buf) const {
487 const uint8_t PltData[] = {
488 0xff, 0x35, 0, 0, 0, 0, // 0: pushl GOTPLT+4
489 0x50, // 6: pushl %eax
490 0xa1, 0, 0, 0, 0, // 7: mov GOTPLT+8, %eax
491 0xe8, 0x0f, 0x00, 0x00, 0x00, // c: call next
492 0xf3, 0x90, // 11: loop: pause
493 0x0f, 0xae, 0xe8, // 13: lfence
494 0xeb, 0xf9, // 16: jmp loop
495 0xcc, 0xcc, 0xcc, 0xcc, 0xcc, // 18: int3
496 0xcc, 0xcc, 0xcc, // 1f: int3; .align 16
497 0x89, 0x0c, 0x24, // 20: next: mov %ecx, (%esp)
498 0x8b, 0x4c, 0x24, 0x04, // 23: mov 0x4(%esp), %ecx
499 0x89, 0x44, 0x24, 0x04, // 27: mov %eax ,0x4(%esp)
500 0x89, 0xc8, // 2b: mov %ecx, %eax
501 0x59, // 2d: pop %ecx
502 0xc3, // 2e: ret
503 };
504 memcpy(Buf, PltData, sizeof(PltData));
505
506 uint32_t GotPlt = InX::GotPlt->getVA();
507 write32le(Buf + 2, GotPlt + 4);
508 write32le(Buf + 8, GotPlt + 8);
509}
510
511void RetpolineNoPic::writePlt(uint8_t *Buf, uint64_t GotPltEntryAddr,
512 uint64_t PltEntryAddr, int32_t Index,
513 unsigned RelOff) const {
514 const uint8_t Insn[] = {
515 0x50, // 0: pushl %eax
516 0xa1, 0, 0, 0, 0, // 1: mov foo_in_GOT, %eax
517 0xe8, 0, 0, 0, 0, // 6: call plt+0x20
518 0xe9, 0, 0, 0, 0, // b: jmp plt+0x11
519 0x68, 0, 0, 0, 0, // 10: pushl $reloc_offset
520 0xe9, 0, 0, 0, 0, // 15: jmp plt+0
521 };
522 memcpy(Buf, Insn, sizeof(Insn));
523
524 write32le(Buf + 2, GotPltEntryAddr);
525 write32le(Buf + 7, -Index * PltEntrySize - PltHeaderSize - 11 + 32);
526 write32le(Buf + 12, -Index * PltEntrySize - PltHeaderSize - 16 + 17);
527 write32le(Buf + 17, RelOff);
528 write32le(Buf + 22, -Index * PltEntrySize - PltHeaderSize - 26);
529}
530
402TargetInfo *elf::getX86TargetInfo() {531TargetInfo *elf::getX86TargetInfo() {
403 static X86 Target;532 if (Config->ZRetpolineplt) {
404 return &Target;533 if (Config->Pic) {
534 static RetpolinePic T;
535 return &T;
536 }
537 static RetpolineNoPic T;
538 return &T;
539 }
540
541 static X86 T;
542 return &T;
405}543}
deps/lld/ELF/Arch/X86_64.cpp+120-7
...@@ -23,7 +23,7 @@ using namespace lld;...@@ -23,7 +23,7 @@ using namespace lld;
23using namespace lld::elf;23using namespace lld::elf;
2424
25namespace {25namespace {
26template <class ELFT> class X86_64 final : public TargetInfo {26template <class ELFT> class X86_64 : public TargetInfo {
27public:27public:
28 X86_64();28 X86_64();
29 RelExpr getRelExpr(RelType Type, const Symbol &S,29 RelExpr getRelExpr(RelType Type, const Symbol &S,
...@@ -460,12 +460,125 @@ void X86_64<ELFT>::relaxGot(uint8_t *Loc, uint64_t Val) const {...@@ -460,12 +460,125 @@ void X86_64<ELFT>::relaxGot(uint8_t *Loc, uint64_t Val) const {
460 write32le(Loc - 1, Val + 1);460 write32le(Loc - 1, Val + 1);
461}461}
462462
463TargetInfo *elf::getX32TargetInfo() {463namespace {
464 static X86_64<ELF32LE> Target;464template <class ELFT> class Retpoline : public X86_64<ELFT> {
465 return &Target;465public:
466 Retpoline();
467 void writeGotPlt(uint8_t *Buf, const Symbol &S) const override;
468 void writePltHeader(uint8_t *Buf) const override;
469 void writePlt(uint8_t *Buf, uint64_t GotPltEntryAddr, uint64_t PltEntryAddr,
470 int32_t Index, unsigned RelOff) const override;
471};
472
473template <class ELFT> class RetpolineZNow : public X86_64<ELFT> {
474public:
475 RetpolineZNow();
476 void writeGotPlt(uint8_t *Buf, const Symbol &S) const override {}
477 void writePltHeader(uint8_t *Buf) const override;
478 void writePlt(uint8_t *Buf, uint64_t GotPltEntryAddr, uint64_t PltEntryAddr,
479 int32_t Index, unsigned RelOff) const override;
480};
481} // namespace
482
483template <class ELFT> Retpoline<ELFT>::Retpoline() {
484 TargetInfo::PltHeaderSize = 48;
485 TargetInfo::PltEntrySize = 32;
486}
487
488template <class ELFT>
489void Retpoline<ELFT>::writeGotPlt(uint8_t *Buf, const Symbol &S) const {
490 write32le(Buf, S.getPltVA() + 17);
491}
492
493template <class ELFT> void Retpoline<ELFT>::writePltHeader(uint8_t *Buf) const {
494 const uint8_t Insn[] = {
495 0xff, 0x35, 0, 0, 0, 0, // 0: pushq GOTPLT+8(%rip)
496 0x4c, 0x8b, 0x1d, 0, 0, 0, 0, // 6: mov GOTPLT+16(%rip), %r11
497 0xe8, 0x0e, 0x00, 0x00, 0x00, // d: callq next
498 0xf3, 0x90, // 12: loop: pause
499 0x0f, 0xae, 0xe8, // 14: lfence
500 0xeb, 0xf9, // 17: jmp loop
501 0xcc, 0xcc, 0xcc, 0xcc, 0xcc, 0xcc, 0xcc, // 19: int3; .align 16
502 0x4c, 0x89, 0x1c, 0x24, // 20: next: mov %r11, (%rsp)
503 0xc3, // 24: ret
504 };
505 memcpy(Buf, Insn, sizeof(Insn));
506
507 uint64_t GotPlt = InX::GotPlt->getVA();
508 uint64_t Plt = InX::Plt->getVA();
509 write32le(Buf + 2, GotPlt - Plt - 6 + 8);
510 write32le(Buf + 9, GotPlt - Plt - 13 + 16);
511}
512
513template <class ELFT>
514void Retpoline<ELFT>::writePlt(uint8_t *Buf, uint64_t GotPltEntryAddr,
515 uint64_t PltEntryAddr, int32_t Index,
516 unsigned RelOff) const {
517 const uint8_t Insn[] = {
518 0x4c, 0x8b, 0x1d, 0, 0, 0, 0, // 0: mov foo@GOTPLT(%rip), %r11
519 0xe8, 0, 0, 0, 0, // 7: callq plt+0x20
520 0xe9, 0, 0, 0, 0, // c: jmp plt+0x12
521 0x68, 0, 0, 0, 0, // 11: pushq <relocation index>
522 0xe9, 0, 0, 0, 0, // 16: jmp plt+0
523 };
524 memcpy(Buf, Insn, sizeof(Insn));
525
526 uint64_t Off = TargetInfo::PltHeaderSize + TargetInfo::PltEntrySize * Index;
527
528 write32le(Buf + 3, GotPltEntryAddr - PltEntryAddr - 7);
529 write32le(Buf + 8, -Off - 12 + 32);
530 write32le(Buf + 13, -Off - 17 + 18);
531 write32le(Buf + 18, Index);
532 write32le(Buf + 23, -Off - 27);
533}
534
535template <class ELFT> RetpolineZNow<ELFT>::RetpolineZNow() {
536 TargetInfo::PltHeaderSize = 32;
537 TargetInfo::PltEntrySize = 16;
538}
539
540template <class ELFT>
541void RetpolineZNow<ELFT>::writePltHeader(uint8_t *Buf) const {
542 const uint8_t Insn[] = {
543 0xe8, 0x0b, 0x00, 0x00, 0x00, // 0: call next
544 0xf3, 0x90, // 5: loop: pause
545 0x0f, 0xae, 0xe8, // 7: lfence
546 0xeb, 0xf9, // a: jmp loop
547 0xcc, 0xcc, 0xcc, 0xcc, // c: int3; .align 16
548 0x4c, 0x89, 0x1c, 0x24, // 10: next: mov %r11, (%rsp)
549 0xc3, // 14: ret
550 };
551 memcpy(Buf, Insn, sizeof(Insn));
466}552}
467553
468TargetInfo *elf::getX86_64TargetInfo() {554template <class ELFT>
469 static X86_64<ELF64LE> Target;555void RetpolineZNow<ELFT>::writePlt(uint8_t *Buf, uint64_t GotPltEntryAddr,
470 return &Target;556 uint64_t PltEntryAddr, int32_t Index,
557 unsigned RelOff) const {
558 const uint8_t Insn[] = {
559 0x4c, 0x8b, 0x1d, 0, 0, 0, 0, // mov foo@GOTPLT(%rip), %r11
560 0xe9, 0, 0, 0, 0, // jmp plt+0
561 };
562 memcpy(Buf, Insn, sizeof(Insn));
563
564 write32le(Buf + 3, GotPltEntryAddr - PltEntryAddr - 7);
565 write32le(Buf + 8,
566 -Index * TargetInfo::PltEntrySize - TargetInfo::PltHeaderSize - 12);
471}567}
568
569template <class ELFT> TargetInfo *getTargetInfo() {
570 if (Config->ZRetpolineplt) {
571 if (Config->ZNow) {
572 static RetpolineZNow<ELFT> T;
573 return &T;
574 }
575 static Retpoline<ELFT> T;
576 return &T;
577 }
578
579 static X86_64<ELFT> T;
580 return &T;
581}
582
583TargetInfo *elf::getX32TargetInfo() { return getTargetInfo<ELF32LE>(); }
584TargetInfo *elf::getX86_64TargetInfo() { return getTargetInfo<ELF64LE>(); }
deps/lld/ELF/Config.h+1
...@@ -159,6 +159,7 @@ struct Configuration {...@@ -159,6 +159,7 @@ struct Configuration {
159 bool ZRelro;159 bool ZRelro;
160 bool ZRodynamic;160 bool ZRodynamic;
161 bool ZText;161 bool ZText;
162 bool ZRetpolineplt;
162 bool ExitEarly;163 bool ExitEarly;
163 bool ZWxneeded;164 bool ZWxneeded;
164 DiscardPolicy Discard;165 DiscardPolicy Discard;
deps/lld/ELF/Driver.cpp+2-1
...@@ -638,7 +638,7 @@ void LinkerDriver::readConfigs(opt::InputArgList &Args) {...@@ -638,7 +638,7 @@ void LinkerDriver::readConfigs(opt::InputArgList &Args) {
638 Config->Optimize = args::getInteger(Args, OPT_O, 1);638 Config->Optimize = args::getInteger(Args, OPT_O, 1);
639 Config->OrphanHandling = getOrphanHandling(Args);639 Config->OrphanHandling = getOrphanHandling(Args);
640 Config->OutputFile = Args.getLastArgValue(OPT_o);640 Config->OutputFile = Args.getLastArgValue(OPT_o);
641 Config->Pie = Args.hasFlag(OPT_pie, OPT_nopie, false);641 Config->Pie = Args.hasFlag(OPT_pie, OPT_no_pie, false);
642 Config->PrintGcSections =642 Config->PrintGcSections =
643 Args.hasFlag(OPT_print_gc_sections, OPT_no_print_gc_sections, false);643 Args.hasFlag(OPT_print_gc_sections, OPT_no_print_gc_sections, false);
644 Config->Rpath = getRpath(Args);644 Config->Rpath = getRpath(Args);
...@@ -674,6 +674,7 @@ void LinkerDriver::readConfigs(opt::InputArgList &Args) {...@@ -674,6 +674,7 @@ void LinkerDriver::readConfigs(opt::InputArgList &Args) {
674 Config->ZNow = hasZOption(Args, "now");674 Config->ZNow = hasZOption(Args, "now");
675 Config->ZOrigin = hasZOption(Args, "origin");675 Config->ZOrigin = hasZOption(Args, "origin");
676 Config->ZRelro = !hasZOption(Args, "norelro");676 Config->ZRelro = !hasZOption(Args, "norelro");
677 Config->ZRetpolineplt = hasZOption(Args, "retpolineplt");
677 Config->ZRodynamic = hasZOption(Args, "rodynamic");678 Config->ZRodynamic = hasZOption(Args, "rodynamic");
678 Config->ZStackSize = args::getZOptionValue(Args, OPT_z, "stack-size", 0);679 Config->ZStackSize = args::getZOptionValue(Args, OPT_z, "stack-size", 0);
679 Config->ZText = !hasZOption(Args, "notext");680 Config->ZText = !hasZOption(Args, "notext");
deps/lld/ELF/InputFiles.cpp+8
...@@ -856,6 +856,14 @@ template <class ELFT> void SharedFile<ELFT>::parseRest() {...@@ -856,6 +856,14 @@ template <class ELFT> void SharedFile<ELFT>::parseRest() {
856 continue;856 continue;
857 }857 }
858858
859 if (Config->EMachine == EM_MIPS) {
860 // FIXME: MIPS BFD linker puts _gp_disp symbol into DSO files
861 // and incorrectly assigns VER_NDX_LOCAL to this section global
862 // symbol. Here is a workaround for this bug.
863 if (Versym && VersymIndex == VER_NDX_LOCAL && Name == "_gp_disp")
864 continue;
865 }
866
859 const Elf_Verdef *Ver = nullptr;867 const Elf_Verdef *Ver = nullptr;
860 if (VersymIndex != VER_NDX_GLOBAL) {868 if (VersymIndex != VER_NDX_GLOBAL) {
861 if (VersymIndex >= Verdefs.size() || VersymIndex == VER_NDX_LOCAL) {869 if (VersymIndex >= Verdefs.size() || VersymIndex == VER_NDX_LOCAL) {
deps/lld/ELF/LinkerScript.cpp+33-20
...@@ -589,8 +589,12 @@ void LinkerScript::output(InputSection *S) {...@@ -589,8 +589,12 @@ void LinkerScript::output(InputSection *S) {
589589
590 // If there is a memory region associated with this input section, then590 // If there is a memory region associated with this input section, then
591 // place the section in that region and update the region index.591 // place the section in that region and update the region index.
592 if (Ctx->LMARegion)
593 Ctx->LMARegion->CurPos += Pos - Before;
594 // FIXME: should we also produce overflow errors for LMARegion?
595
592 if (Ctx->MemRegion) {596 if (Ctx->MemRegion) {
593 uint64_t &CurOffset = Ctx->MemRegionOffset[Ctx->MemRegion];597 uint64_t &CurOffset = Ctx->MemRegion->CurPos;
594 CurOffset += Pos - Before;598 CurOffset += Pos - Before;
595 uint64_t CurSize = CurOffset - Ctx->MemRegion->Origin;599 uint64_t CurSize = CurOffset - Ctx->MemRegion->Origin;
596 if (CurSize > Ctx->MemRegion->Length) {600 if (CurSize > Ctx->MemRegion->Length) {
...@@ -608,13 +612,6 @@ void LinkerScript::switchTo(OutputSection *Sec) {...@@ -608,13 +612,6 @@ void LinkerScript::switchTo(OutputSection *Sec) {
608612
609 Ctx->OutSec = Sec;613 Ctx->OutSec = Sec;
610 Ctx->OutSec->Addr = advance(0, Ctx->OutSec->Alignment);614 Ctx->OutSec->Addr = advance(0, Ctx->OutSec->Alignment);
611
612 // If neither AT nor AT> is specified for an allocatable section, the linker
613 // will set the LMA such that the difference between VMA and LMA for the
614 // section is the same as the preceding output section in the same region
615 // https://sourceware.org/binutils/docs-2.20/ld/Output-Section-LMA.html
616 if (Ctx->LMAOffset)
617 Ctx->OutSec->LMAOffset = Ctx->LMAOffset();
618}615}
619616
620// This function searches for a memory region to place the given output617// This function searches for a memory region to place the given output
...@@ -624,9 +621,8 @@ MemoryRegion *LinkerScript::findMemoryRegion(OutputSection *Sec) {...@@ -624,9 +621,8 @@ MemoryRegion *LinkerScript::findMemoryRegion(OutputSection *Sec) {
624 // If a memory region name was specified in the output section command,621 // If a memory region name was specified in the output section command,
625 // then try to find that region first.622 // then try to find that region first.
626 if (!Sec->MemoryRegionName.empty()) {623 if (!Sec->MemoryRegionName.empty()) {
627 auto It = MemoryRegions.find(Sec->MemoryRegionName);624 if (MemoryRegion *M = MemoryRegions.lookup(Sec->MemoryRegionName))
628 if (It != MemoryRegions.end())625 return M;
629 return It->second;
630 error("memory region '" + Sec->MemoryRegionName + "' not declared");626 error("memory region '" + Sec->MemoryRegionName + "' not declared");
631 return nullptr;627 return nullptr;
632 }628 }
...@@ -659,16 +655,25 @@ void LinkerScript::assignOffsets(OutputSection *Sec) {...@@ -659,16 +655,25 @@ void LinkerScript::assignOffsets(OutputSection *Sec) {
659 setDot(Sec->AddrExpr, Sec->Location, false);655 setDot(Sec->AddrExpr, Sec->Location, false);
660656
661 Ctx->MemRegion = Sec->MemRegion;657 Ctx->MemRegion = Sec->MemRegion;
658 Ctx->LMARegion = Sec->LMARegion;
662 if (Ctx->MemRegion)659 if (Ctx->MemRegion)
663 Dot = Ctx->MemRegionOffset[Ctx->MemRegion];660 Dot = Ctx->MemRegion->CurPos;
664
665 if (Sec->LMAExpr) {
666 uint64_t D = Dot;
667 Ctx->LMAOffset = [=] { return Sec->LMAExpr().getValue() - D; };
668 }
669661
670 switchTo(Sec);662 switchTo(Sec);
671663
664 if (Sec->LMAExpr)
665 Ctx->LMAOffset = Sec->LMAExpr().getValue() - Dot;
666
667 if (MemoryRegion *MR = Sec->LMARegion)
668 Ctx->LMAOffset = MR->CurPos - Dot;
669
670 // If neither AT nor AT> is specified for an allocatable section, the linker
671 // will set the LMA such that the difference between VMA and LMA for the
672 // section is the same as the preceding output section in the same region
673 // https://sourceware.org/binutils/docs-2.20/ld/Output-Section-LMA.html
674 if (PhdrEntry *L = Ctx->OutSec->PtLoad)
675 L->LMAOffset = Ctx->LMAOffset;
676
672 // The Size previously denoted how many InputSections had been added to this677 // The Size previously denoted how many InputSections had been added to this
673 // section, and was used for sorting SHF_LINK_ORDER sections. Reset it to678 // section, and was used for sorting SHF_LINK_ORDER sections. Reset it to
674 // compute the actual size value.679 // compute the actual size value.
...@@ -689,7 +694,9 @@ void LinkerScript::assignOffsets(OutputSection *Sec) {...@@ -689,7 +694,9 @@ void LinkerScript::assignOffsets(OutputSection *Sec) {
689 Cmd->Offset = Dot - Ctx->OutSec->Addr;694 Cmd->Offset = Dot - Ctx->OutSec->Addr;
690 Dot += Cmd->Size;695 Dot += Cmd->Size;
691 if (Ctx->MemRegion)696 if (Ctx->MemRegion)
692 Ctx->MemRegionOffset[Ctx->MemRegion] += Cmd->Size;697 Ctx->MemRegion->CurPos += Cmd->Size;
698 if (Ctx->LMARegion)
699 Ctx->LMARegion->CurPos += Cmd->Size;
693 Ctx->OutSec->Size = Dot - Ctx->OutSec->Addr;700 Ctx->OutSec->Size = Dot - Ctx->OutSec->Addr;
694 continue;701 continue;
695 }702 }
...@@ -788,6 +795,12 @@ void LinkerScript::adjustSectionsAfterSorting() {...@@ -788,6 +795,12 @@ void LinkerScript::adjustSectionsAfterSorting() {
788 if (auto *Sec = dyn_cast<OutputSection>(Base)) {795 if (auto *Sec = dyn_cast<OutputSection>(Base)) {
789 if (!Sec->Live)796 if (!Sec->Live)
790 continue;797 continue;
798 if (!Sec->LMARegionName.empty()) {
799 if (MemoryRegion *M = MemoryRegions.lookup(Sec->LMARegionName))
800 Sec->LMARegion = M;
801 else
802 error("memory region '" + Sec->LMARegionName + "' not declared");
803 }
791 Sec->MemRegion = findMemoryRegion(Sec);804 Sec->MemRegion = findMemoryRegion(Sec);
792 // Handle align (e.g. ".foo : ALIGN(16) { ... }").805 // Handle align (e.g. ".foo : ALIGN(16) { ... }").
793 if (Sec->AlignExpr)806 if (Sec->AlignExpr)
...@@ -878,8 +891,8 @@ void LinkerScript::allocateHeaders(std::vector<PhdrEntry *> &Phdrs) {...@@ -878,8 +891,8 @@ void LinkerScript::allocateHeaders(std::vector<PhdrEntry *> &Phdrs) {
878891
879LinkerScript::AddressState::AddressState() {892LinkerScript::AddressState::AddressState() {
880 for (auto &MRI : Script->MemoryRegions) {893 for (auto &MRI : Script->MemoryRegions) {
881 const MemoryRegion *MR = MRI.second;894 MemoryRegion *MR = MRI.second;
882 MemRegionOffset[MR] = MR->Origin;895 MR->CurPos = MR->Origin;
883 }896 }
884}897}
885898
deps/lld/ELF/LinkerScript.h+8-2
...@@ -118,11 +118,17 @@ enum class ConstraintKind { NoConstraint, ReadOnly, ReadWrite };...@@ -118,11 +118,17 @@ enum class ConstraintKind { NoConstraint, ReadOnly, ReadWrite };
118// target memory. Instances of the struct are created by parsing the118// target memory. Instances of the struct are created by parsing the
119// MEMORY command.119// MEMORY command.
120struct MemoryRegion {120struct MemoryRegion {
121 MemoryRegion(StringRef Name, uint64_t Origin, uint64_t Length, uint32_t Flags,
122 uint32_t NegFlags)
123 : Name(Name), Origin(Origin), Length(Length), Flags(Flags),
124 NegFlags(NegFlags) {}
125
121 std::string Name;126 std::string Name;
122 uint64_t Origin;127 uint64_t Origin;
123 uint64_t Length;128 uint64_t Length;
124 uint32_t Flags;129 uint32_t Flags;
125 uint32_t NegFlags;130 uint32_t NegFlags;
131 uint64_t CurPos = 0;
126};132};
127133
128// This struct represents one section match pattern in SECTIONS() command.134// This struct represents one section match pattern in SECTIONS() command.
...@@ -200,8 +206,8 @@ class LinkerScript final {...@@ -200,8 +206,8 @@ class LinkerScript final {
200 uint64_t ThreadBssOffset = 0;206 uint64_t ThreadBssOffset = 0;
201 OutputSection *OutSec = nullptr;207 OutputSection *OutSec = nullptr;
202 MemoryRegion *MemRegion = nullptr;208 MemoryRegion *MemRegion = nullptr;
203 llvm::DenseMap<const MemoryRegion *, uint64_t> MemRegionOffset;209 MemoryRegion *LMARegion = nullptr;
204 std::function<uint64_t()> LMAOffset;210 uint64_t LMAOffset = 0;
205 };211 };
206212
207 llvm::DenseMap<StringRef, OutputSection *> NameToOutputSection;213 llvm::DenseMap<StringRef, OutputSection *> NameToOutputSection;
deps/lld/ELF/Options.td+2-2
...@@ -202,6 +202,8 @@ def no_gnu_unique: F<"no-gnu-unique">,...@@ -202,6 +202,8 @@ def no_gnu_unique: F<"no-gnu-unique">,
202def no_merge_exidx_entries: F<"no-merge-exidx-entries">,202def no_merge_exidx_entries: F<"no-merge-exidx-entries">,
203 HelpText<"Disable merging .ARM.exidx entries">;203 HelpText<"Disable merging .ARM.exidx entries">;
204204
205def no_pie: F<"no-pie">, HelpText<"Do not create a position independent executable">;
206
205def no_threads: F<"no-threads">,207def no_threads: F<"no-threads">,
206 HelpText<"Do not run the linker multi-threaded">;208 HelpText<"Do not run the linker multi-threaded">;
207209
...@@ -211,8 +213,6 @@ def no_whole_archive: F<"no-whole-archive">,...@@ -211,8 +213,6 @@ def no_whole_archive: F<"no-whole-archive">,
211def noinhibit_exec: F<"noinhibit-exec">,213def noinhibit_exec: F<"noinhibit-exec">,
212 HelpText<"Retain the executable output file whenever it is still usable">;214 HelpText<"Retain the executable output file whenever it is still usable">;
213215
214def nopie: F<"nopie">, HelpText<"Do not create a position independent executable">;
215
216def no_omagic: Flag<["--"], "no-omagic">, MetaVarName<"<magic>">,216def no_omagic: Flag<["--"], "no-omagic">, MetaVarName<"<magic>">,
217 HelpText<"Do not set the text data sections to be writable">;217 HelpText<"Do not set the text data sections to be writable">;
218218
deps/lld/ELF/OutputSections.h+3-2
...@@ -49,7 +49,7 @@ public:...@@ -49,7 +49,7 @@ public:
4949
50 static bool classof(const BaseCommand *C);50 static bool classof(const BaseCommand *C);
5151
52 uint64_t getLMA() const { return Addr + LMAOffset; }52 uint64_t getLMA() const { return PtLoad ? Addr + PtLoad->LMAOffset : Addr; }
53 template <typename ELFT> void writeHeaderTo(typename ELFT::Shdr *SHdr);53 template <typename ELFT> void writeHeaderTo(typename ELFT::Shdr *SHdr);
5454
55 unsigned SectionIndex;55 unsigned SectionIndex;
...@@ -78,7 +78,6 @@ public:...@@ -78,7 +78,6 @@ public:
7878
79 // The following fields correspond to Elf_Shdr members.79 // The following fields correspond to Elf_Shdr members.
80 uint64_t Offset = 0;80 uint64_t Offset = 0;
81 uint64_t LMAOffset = 0;
82 uint64_t Addr = 0;81 uint64_t Addr = 0;
83 uint32_t ShName = 0;82 uint32_t ShName = 0;
8483
...@@ -89,6 +88,7 @@ public:...@@ -89,6 +88,7 @@ public:
8988
90 // The following members are normally only used in linker scripts.89 // The following members are normally only used in linker scripts.
91 MemoryRegion *MemRegion = nullptr;90 MemoryRegion *MemRegion = nullptr;
91 MemoryRegion *LMARegion = nullptr;
92 Expr AddrExpr;92 Expr AddrExpr;
93 Expr AlignExpr;93 Expr AlignExpr;
94 Expr LMAExpr;94 Expr LMAExpr;
...@@ -99,6 +99,7 @@ public:...@@ -99,6 +99,7 @@ public:
99 ConstraintKind Constraint = ConstraintKind::NoConstraint;99 ConstraintKind Constraint = ConstraintKind::NoConstraint;
100 std::string Location;100 std::string Location;
101 std::string MemoryRegionName;101 std::string MemoryRegionName;
102 std::string LMARegionName;
102 bool Noload = false;103 bool Noload = false;
103104
104 template <class ELFT> void finalize();105 template <class ELFT> void finalize();
deps/lld/ELF/ScriptParser.cpp+13-2
...@@ -709,6 +709,14 @@ OutputSection *ScriptParser::readOutputSectionDescription(StringRef OutSec) {...@@ -709,6 +709,14 @@ OutputSection *ScriptParser::readOutputSectionDescription(StringRef OutSec) {
709 if (consume(">"))709 if (consume(">"))
710 Cmd->MemoryRegionName = next();710 Cmd->MemoryRegionName = next();
711711
712 if (consume("AT")) {
713 expect(">");
714 Cmd->LMARegionName = next();
715 }
716
717 if (Cmd->LMAExpr && !Cmd->LMARegionName.empty())
718 error("section can't have both LMA and a load region");
719
712 Cmd->Phdrs = readOutputSectionPhdrs();720 Cmd->Phdrs = readOutputSectionPhdrs();
713721
714 if (consume("="))722 if (consume("="))
...@@ -922,7 +930,10 @@ ByteCommand *ScriptParser::readByteCommand(StringRef Tok) {...@@ -922,7 +930,10 @@ ByteCommand *ScriptParser::readByteCommand(StringRef Tok) {
922930
923StringRef ScriptParser::readParenLiteral() {931StringRef ScriptParser::readParenLiteral() {
924 expect("(");932 expect("(");
933 bool Orig = InExpr;
934 InExpr = false;
925 StringRef Tok = next();935 StringRef Tok = next();
936 InExpr = Orig;
926 expect(")");937 expect(")");
927 return Tok;938 return Tok;
928}939}
...@@ -1282,8 +1293,8 @@ void ScriptParser::readMemory() {...@@ -1282,8 +1293,8 @@ void ScriptParser::readMemory() {
1282 // Add the memory region to the region map.1293 // Add the memory region to the region map.
1283 if (Script->MemoryRegions.count(Name))1294 if (Script->MemoryRegions.count(Name))
1284 setError("region '" + Name + "' already defined");1295 setError("region '" + Name + "' already defined");
1285 MemoryRegion *MR = make<MemoryRegion>();1296 MemoryRegion *MR =
1286 *MR = {Name, Origin, Length, Flags, NegFlags};1297 make<MemoryRegion>(Name, Origin, Length, Flags, NegFlags);
1287 Script->MemoryRegions[Name] = MR;1298 Script->MemoryRegions[Name] = MR;
1288 }1299 }
1289}1300}
deps/lld/ELF/SymbolTable.cpp+2-1
...@@ -491,12 +491,13 @@ void SymbolTable::addShared(StringRef Name, SharedFile<ELFT> &File,...@@ -491,12 +491,13 @@ void SymbolTable::addShared(StringRef Name, SharedFile<ELFT> &File,
491 if (WasInserted || ((S->isUndefined() || S->isLazy()) &&491 if (WasInserted || ((S->isUndefined() || S->isLazy()) &&
492 S->getVisibility() == STV_DEFAULT)) {492 S->getVisibility() == STV_DEFAULT)) {
493 uint8_t Binding = S->Binding;493 uint8_t Binding = S->Binding;
494 bool WasUndefined = S->isUndefined();
494 replaceSymbol<SharedSymbol>(S, File, Name, Sym.getBinding(), Sym.st_other,495 replaceSymbol<SharedSymbol>(S, File, Name, Sym.getBinding(), Sym.st_other,
495 Sym.getType(), Sym.st_value, Sym.st_size,496 Sym.getType(), Sym.st_value, Sym.st_size,
496 Alignment, VerdefIndex);497 Alignment, VerdefIndex);
497 if (!WasInserted) {498 if (!WasInserted) {
498 S->Binding = Binding;499 S->Binding = Binding;
499 if (!S->isWeak() && !Config->GcSections)500 if (!S->isWeak() && !Config->GcSections && WasUndefined)
500 File.IsNeeded = true;501 File.IsNeeded = true;
501 }502 }
502 }503 }
deps/lld/ELF/Writer.cpp+5-1
...@@ -822,6 +822,8 @@ void PhdrEntry::add(OutputSection *Sec) {...@@ -822,6 +822,8 @@ void PhdrEntry::add(OutputSection *Sec) {
822 p_align = std::max(p_align, Sec->Alignment);822 p_align = std::max(p_align, Sec->Alignment);
823 if (p_type == PT_LOAD)823 if (p_type == PT_LOAD)
824 Sec->PtLoad = this;824 Sec->PtLoad = this;
825 if (Sec->LMAExpr)
826 ASectionHasLMA = true;
825}827}
826828
827// The beginning and the ending of .rel[a].plt section are marked829// The beginning and the ending of .rel[a].plt section are marked
...@@ -1626,7 +1628,9 @@ template <class ELFT> std::vector<PhdrEntry *> Writer<ELFT>::createPhdrs() {...@@ -1626,7 +1628,9 @@ template <class ELFT> std::vector<PhdrEntry *> Writer<ELFT>::createPhdrs() {
1626 // different flags or is loaded at a discontiguous address using AT linker1628 // different flags or is loaded at a discontiguous address using AT linker
1627 // script command.1629 // script command.
1628 uint64_t NewFlags = computeFlags(Sec->getPhdrFlags());1630 uint64_t NewFlags = computeFlags(Sec->getPhdrFlags());
1629 if (Sec->LMAExpr || Flags != NewFlags) {1631 if ((Sec->LMAExpr && Load->ASectionHasLMA) ||
1632 Sec->MemRegion != Load->FirstSec->MemRegion || Flags != NewFlags) {
1633
1630 Load = AddHdr(PT_LOAD, NewFlags);1634 Load = AddHdr(PT_LOAD, NewFlags);
1631 Flags = NewFlags;1635 Flags = NewFlags;
1632 }1636 }
deps/lld/ELF/Writer.h+7
...@@ -44,6 +44,13 @@ struct PhdrEntry {...@@ -44,6 +44,13 @@ struct PhdrEntry {
44 OutputSection *FirstSec = nullptr;44 OutputSection *FirstSec = nullptr;
45 OutputSection *LastSec = nullptr;45 OutputSection *LastSec = nullptr;
46 bool HasLMA = false;46 bool HasLMA = false;
47
48 // True if one of the sections in this program header has a LMA specified via
49 // linker script: AT(addr). We never allow 2 or more sections with LMA in the
50 // same program header.
51 bool ASectionHasLMA = false;
52
53 uint64_t LMAOffset = 0;
47};54};
4855
49void addReservedSymbols();56void addReservedSymbols();
deps/lld/lib/ReaderWriter/MachO/ArchHandler_x86_64.cpp+1
...@@ -621,6 +621,7 @@ void ArchHandler_x86_64::applyFixupFinal(...@@ -621,6 +621,7 @@ void ArchHandler_x86_64::applyFixupFinal(
621 // Fall into llvm_unreachable().621 // Fall into llvm_unreachable().
622 break;622 break;
623 }623 }
624 llvm_unreachable("invalid x86_64 Reference Kind");
624}625}
625626
626void ArchHandler_x86_64::applyFixupRelocatable(const Reference &ref,627void ArchHandler_x86_64::applyFixupRelocatable(const Reference &ref,
deps/lld/test/ELF/Inputs/as-needed-lazy.s created+3
...@@ -0,0 +1,3 @@
1.global foo
2foo:
3 nop
deps/lld/test/ELF/Inputs/mips-gp-dips-corrupt-ver.s created+14
...@@ -0,0 +1,14 @@
1# Source file for mips-gp-dips-corrupt-ver.so
2#
3# % cat gpdisp.ver
4# LLD_1.0.0 { global: foo; };
5#
6# % as mips-gp-dips-corrupt-ver.s -o mips-gp-dips-corrupt-ver.o
7# % ld -shared -o mips-gp-dips-corrupt-ver.so \
8# --version-script gpdisp.ver mips-gp-dips-corrupt-ver.o
9
10 .global foo
11 .text
12foo:
13 lui $t0, %hi(_gp_disp)
14 addi $t0, $t0, %lo(_gp_disp)
deps/lld/test/ELF/Inputs/mips-gp-dips-corrupt-ver.so created
Binary files /dev/null and b/deps/lld/test/ELF/Inputs/mips-gp-dips-corrupt-ver.so differ
deps/lld/test/ELF/as-needed-lazy.s created+14
...@@ -0,0 +1,14 @@
1# REQUIRES: x86
2# RUN: llvm-mc -filetype=obj -triple=x86_64-pc-linux %s -o %t1.o
3# RUN: llvm-mc -filetype=obj -triple=x86_64-pc-linux %p/Inputs/as-needed-lazy.s -o %t2.o
4# RUN: ld.lld %t2.o -o %t2.so -shared
5# RUN: rm -f %t2.a
6# RUN: llvm-ar rc %t2.a %t2.o
7# RUN: ld.lld %t1.o %t2.a --as-needed %t2.so -o %t
8# RUN: llvm-readobj -d %t | FileCheck %s
9
10# CHECK-NOT: NEEDED
11
12.global _start
13_start:
14 nop
deps/lld/test/ELF/i386-retpoline-nopic.s created+65
...@@ -0,0 +1,65 @@
1// REQUIRES: x86
2// RUN: llvm-mc -filetype=obj -triple=i386-unknown-linux %s -o %t1.o
3// RUN: llvm-mc -filetype=obj -triple=i386-unknown-linux %p/Inputs/shared.s -o %t2.o
4// RUN: ld.lld -shared %t2.o -o %t2.so
5
6// RUN: ld.lld %t1.o %t2.so -o %t.exe -z retpolineplt
7// RUN: llvm-objdump -d -s %t.exe | FileCheck %s
8
9// CHECK: Disassembly of section .plt:
10// CHECK-NEXT: .plt:
11// CHECK-NEXT: 11010: ff 35 04 20 01 00 pushl 73732
12// CHECK-NEXT: 11016: 50 pushl %eax
13// CHECK-NEXT: 11017: a1 08 20 01 00 movl 73736, %eax
14// CHECK-NEXT: 1101c: e8 0f 00 00 00 calll 15 <.plt+0x20>
15// CHECK-NEXT: 11021: f3 90 pause
16// CHECK-NEXT: 11023: 0f ae e8 lfence
17// CHECK-NEXT: 11026: eb f9 jmp -7 <.plt+0x11>
18// CHECK-NEXT: 11028: cc int3
19// CHECK-NEXT: 11029: cc int3
20// CHECK-NEXT: 1102a: cc int3
21// CHECK-NEXT: 1102b: cc int3
22// CHECK-NEXT: 1102c: cc int3
23// CHECK-NEXT: 1102d: cc int3
24// CHECK-NEXT: 1102e: cc int3
25// CHECK-NEXT: 1102f: cc int3
26// CHECK-NEXT: 11030: 89 0c 24 movl %ecx, (%esp)
27// CHECK-NEXT: 11033: 8b 4c 24 04 movl 4(%esp), %ecx
28// CHECK-NEXT: 11037: 89 44 24 04 movl %eax, 4(%esp)
29// CHECK-NEXT: 1103b: 89 c8 movl %ecx, %eax
30// CHECK-NEXT: 1103d: 59 popl %ecx
31// CHECK-NEXT: 1103e: c3 retl
32// CHECK-NEXT: 1103f: cc int3
33// CHECK-NEXT: 11040: 50 pushl %eax
34// CHECK-NEXT: 11041: a1 0c 20 01 00 movl 73740, %eax
35// CHECK-NEXT: 11046: e8 e5 ff ff ff calll -27 <.plt+0x20>
36// CHECK-NEXT: 1104b: e9 d1 ff ff ff jmp -47 <.plt+0x11>
37// CHECK-NEXT: 11050: 68 00 00 00 00 pushl $0
38// CHECK-NEXT: 11055: e9 b6 ff ff ff jmp -74 <.plt>
39// CHECK-NEXT: 1105a: cc int3
40// CHECK-NEXT: 1105b: cc int3
41// CHECK-NEXT: 1105c: cc int3
42// CHECK-NEXT: 1105d: cc int3
43// CHECK-NEXT: 1105e: cc int3
44// CHECK-NEXT: 1105f: cc int3
45// CHECK-NEXT: 11060: 50 pushl %eax
46// CHECK-NEXT: 11061: a1 10 20 01 00 movl 73744, %eax
47// CHECK-NEXT: 11066: e8 c5 ff ff ff calll -59 <.plt+0x20>
48// CHECK-NEXT: 1106b: e9 b1 ff ff ff jmp -79 <.plt+0x11>
49// CHECK-NEXT: 11070: 68 08 00 00 00 pushl $8
50// CHECK-NEXT: 11075: e9 96 ff ff ff jmp -106 <.plt>
51// CHECK-NEXT: 1107a: cc int3
52// CHECK-NEXT: 1107b: cc int3
53// CHECK-NEXT: 1107c: cc int3
54// CHECK-NEXT: 1107d: cc int3
55// CHECK-NEXT: 1107e: cc int3
56// CHECK-NEXT: 1107f: cc int3
57
58// CHECK: Contents of section .got.plt:
59// CHECK-NEXT: 00300100 00000000 00000000 50100100
60// CHECK-NEXT: 70100100
61
62.global _start
63_start:
64 jmp bar@PLT
65 jmp zed@PLT
deps/lld/test/ELF/i386-retpoline-pic.s created+62
...@@ -0,0 +1,62 @@
1// REQUIRES: x86
2// RUN: llvm-mc -filetype=obj -triple=i386-unknown-linux -position-independent %s -o %t1.o
3// RUN: llvm-mc -filetype=obj -triple=i386-unknown-linux -position-independent %p/Inputs/shared.s -o %t2.o
4// RUN: ld.lld -shared %t2.o -o %t2.so
5
6// RUN: ld.lld %t1.o %t2.so -o %t.exe -z retpolineplt -pie
7// RUN: llvm-objdump -d -s %t.exe | FileCheck %s
8
9// CHECK: Disassembly of section .plt:
10// CHECK-NEXT: .plt:
11// CHECK-NEXT: 1010: ff b3 04 20 00 00 pushl 8196(%ebx)
12// CHECK-NEXT: 1016: 50 pushl %eax
13// CHECK-NEXT: 1017: 8b 83 08 20 00 00 movl 8200(%ebx), %eax
14// CHECK-NEXT: 101d: e8 0e 00 00 00 calll 14 <.plt+0x20>
15// CHECK-NEXT: 1022: f3 90 pause
16// CHECK-NEXT: 1024: 0f ae e8 lfence
17// CHECK-NEXT: 1027: eb f9 jmp -7 <.plt+0x12>
18// CHECK-NEXT: 1029: cc int3
19// CHECK-NEXT: 102a: cc int3
20// CHECK-NEXT: 102b: cc int3
21// CHECK-NEXT: 102c: cc int3
22// CHECK-NEXT: 102d: cc int3
23// CHECK-NEXT: 102e: cc int3
24// CHECK-NEXT: 102f: cc int3
25// CHECK-NEXT: 1030: 89 0c 24 movl %ecx, (%esp)
26// CHECK-NEXT: 1033: 8b 4c 24 04 movl 4(%esp), %ecx
27// CHECK-NEXT: 1037: 89 44 24 04 movl %eax, 4(%esp)
28// CHECK-NEXT: 103b: 89 c8 movl %ecx, %eax
29// CHECK-NEXT: 103d: 59 popl %ecx
30// CHECK-NEXT: 103e: c3 retl
31// CHECK-NEXT: 103f: cc int3
32// CHECK-NEXT: 1040: 50 pushl %eax
33// CHECK-NEXT: 1041: 8b 83 0c 20 00 00 movl 8204(%ebx), %eax
34// CHECK-NEXT: 1047: e8 e4 ff ff ff calll -28 <.plt+0x20>
35// CHECK-NEXT: 104c: e9 d1 ff ff ff jmp -47 <.plt+0x12>
36// CHECK-NEXT: 1051: 68 00 00 00 00 pushl $0
37// CHECK-NEXT: 1056: e9 b5 ff ff ff jmp -75 <.plt>
38// CHECK-NEXT: 105b: cc int3
39// CHECK-NEXT: 105c: cc int3
40// CHECK-NEXT: 105d: cc int3
41// CHECK-NEXT: 105e: cc int3
42// CHECK-NEXT: 105f: cc int3
43// CHECK-NEXT: 1060: 50 pushl %eax
44// CHECK-NEXT: 1061: 8b 83 10 20 00 00 movl 8208(%ebx), %eax
45// CHECK-NEXT: 1067: e8 c4 ff ff ff calll -60 <.plt+0x20>
46// CHECK-NEXT: 106c: e9 b1 ff ff ff jmp -79 <.plt+0x12>
47// CHECK-NEXT: 1071: 68 08 00 00 00 pushl $8
48// CHECK-NEXT: 1076: e9 95 ff ff ff jmp -107 <.plt>
49// CHECK-NEXT: 107b: cc int3
50// CHECK-NEXT: 107c: cc int3
51// CHECK-NEXT: 107d: cc int3
52// CHECK-NEXT: 107e: cc int3
53// CHECK-NEXT: 107f: cc int3
54
55// CHECK: Contents of section .got.plt:
56// CHECK-NEXT: 2000 00300000 00000000 00000000 51100000
57// CHECK-NEXT: 2010 71100000
58
59.global _start
60_start:
61 jmp bar@PLT
62 jmp zed@PLT
deps/lld/test/ELF/linkerscript/at-self-reference.s created+63
...@@ -0,0 +1,63 @@
1# REQUIRES: x86
2# RUN: llvm-mc -filetype=obj -triple=x86_64-unknown-linux %s -o %t
3# RUN: echo "SECTIONS { \
4# RUN: . = 0x1000; \
5# RUN: .aaa : AT(ADDR(.aaa)) { *(.aaa) } \
6# RUN: .bbb : AT(ADDR(.bbb)) { *(.bbb) } \
7# RUN: }" > %t.script
8# RUN: ld.lld %t --script %t.script -o %t2
9# RUN: llvm-readobj -program-headers %t2 | FileCheck %s
10
11# CHECK: ProgramHeaders [
12# CHECK-NEXT: ProgramHeader {
13# CHECK-NEXT: Type: PT_LOAD (0x1)
14# CHECK-NEXT: Offset: 0x1000
15# CHECK-NEXT: VirtualAddress: 0x1000
16# CHECK-NEXT: PhysicalAddress: 0x1000
17# CHECK-NEXT: FileSize: 3
18# CHECK-NEXT: MemSize: 3
19# CHECK-NEXT: Flags [ (0x5)
20# CHECK-NEXT: PF_R (0x4)
21# CHECK-NEXT: PF_X (0x1)
22# CHECK-NEXT: ]
23# CHECK-NEXT: Alignment: 4096
24# CHECK-NEXT: }
25# CHECK-NEXT: ProgramHeader {
26# CHECK-NEXT: Type: PT_LOAD (0x1)
27# CHECK-NEXT: Offset: 0x1008
28# CHECK-NEXT: VirtualAddress: 0x1008
29# CHECK-NEXT: PhysicalAddress: 0x1008
30# CHECK-NEXT: FileSize: 9
31# CHECK-NEXT: MemSize: 9
32# CHECK-NEXT: Flags [ (0x5)
33# CHECK-NEXT: PF_R (0x4)
34# CHECK-NEXT: PF_X (0x1)
35# CHECK-NEXT: ]
36# CHECK-NEXT: Alignment: 4096
37# CHECK-NEXT: }
38# CHECK-NEXT: ProgramHeader {
39# CHECK-NEXT: Type: PT_GNU_STACK (0x6474E551)
40# CHECK-NEXT: Offset: 0x0
41# CHECK-NEXT: VirtualAddress: 0x0
42# CHECK-NEXT: PhysicalAddress: 0x0
43# CHECK-NEXT: FileSize: 0
44# CHECK-NEXT: MemSize: 0
45# CHECK-NEXT: Flags [ (0x6)
46# CHECK-NEXT: PF_R (0x4)
47# CHECK-NEXT: PF_W (0x2)
48# CHECK-NEXT: ]
49# CHECK-NEXT: Alignment: 0
50# CHECK-NEXT: }
51# CHECK-NEXT:]
52
53.global _start
54_start:
55 nop
56
57
58.section .aaa, "a"
59.asciz "aa"
60
61.section .bbb, "a"
62.align 8
63.quad 0
deps/lld/test/ELF/linkerscript/at2.s created+81
...@@ -0,0 +1,81 @@
1# REQUIRES: x86
2# RUN: llvm-mc -filetype=obj -triple=x86_64-unknown-linux %s -o %t
3# RUN: echo "MEMORY { \
4# RUN: AX (ax) : ORIGIN = 0x2000, LENGTH = 0x100 \
5# RUN: AW (aw) : ORIGIN = 0x3000, LENGTH = 0x100 \
6# RUN: FLASH (ax) : ORIGIN = 0x6000, LENGTH = 0x100 \
7# RUN: RAM (aw) : ORIGIN = 0x7000, LENGTH = 0x100 } \
8# RUN: SECTIONS { \
9# RUN: .foo1 : { *(.foo1) } > AX AT>FLASH \
10# RUN: .foo2 : { *(.foo2) } > AX \
11# RUN: .bar1 : { *(.bar1) } > AW AT> RAM \
12# RUN: .bar2 : { *(.bar2) } > AW AT > RAM \
13# RUN: .bar3 : { *(.bar3) } > AW AT >RAM \
14# RUN: }" > %t.script
15# RUN: ld.lld %t --script %t.script -o %t2
16# RUN: llvm-readobj -program-headers %t2 | FileCheck %s
17# RUN: llvm-objdump -section-headers %t2 | FileCheck %s --check-prefix=SECTIONS
18
19# CHECK: ProgramHeaders [
20# CHECK-NEXT: ProgramHeader {
21# CHECK-NEXT: Type: PT_LOAD
22# CHECK-NEXT: Offset: 0x1000
23# CHECK-NEXT: VirtualAddress: 0x2000
24# CHECK-NEXT: PhysicalAddress: 0x6000
25# CHECK-NEXT: FileSize: 16
26# CHECK-NEXT: MemSize: 16
27# CHECK-NEXT: Flags [
28# CHECK-NEXT: PF_R
29# CHECK-NEXT: PF_X
30# CHECK-NEXT: ]
31# CHECK-NEXT: Alignment:
32# CHECK-NEXT: }
33# CHECK-NEXT: ProgramHeader {
34# CHECK-NEXT: Type: PT_LOAD
35# CHECK-NEXT: Offset: 0x2000
36# CHECK-NEXT: VirtualAddress: 0x3000
37# CHECK-NEXT: PhysicalAddress: 0x7000
38# CHECK-NEXT: FileSize: 24
39# CHECK-NEXT: MemSize: 24
40# CHECK-NEXT: Flags [
41# CHECK-NEXT: PF_R
42# CHECK-NEXT: PF_W
43# CHECK-NEXT: ]
44# CHECK-NEXT: Alignment: 4096
45# CHECK-NEXT: }
46
47# SECTIONS: Sections:
48# SECTIONS-NEXT: Idx Name Size Address
49# SECTIONS-NEXT: 0 00000000 0000000000000000
50# SECTIONS-NEXT: 1 .foo1 00000008 0000000000002000
51# SECTIONS-NEXT: 2 .foo2 00000008 0000000000002008
52# SECTIONS-NEXT: 3 .text 00000000 0000000000002010
53# SECTIONS-NEXT: 4 .bar1 00000008 0000000000003000
54# SECTIONS-NEXT: 5 .bar2 00000008 0000000000003008
55# SECTIONS-NEXT: 6 .bar3 00000008 0000000000003010
56
57# RUN: llvm-mc -filetype=obj -triple=x86_64-unknown-linux %s -o %t
58# RUN: echo "MEMORY { \
59# RUN: FLASH (ax) : ORIGIN = 0x2000, LENGTH = 0x100 \
60# RUN: RAM (aw) : ORIGIN = 0x5000, LENGTH = 0x100 } \
61# RUN: SECTIONS { \
62# RUN: .foo1 : AT(0x500) { *(.foo1) } > FLASH AT>FLASH \
63# RUN: }" > %t2.script
64# RUN: not ld.lld %t --script %t2.script -o %t2 2>&1 | \
65# RUN: FileCheck %s --check-prefix=ERR
66# ERR: error: section can't have both LMA and a load region
67
68.section .foo1, "ax"
69.quad 0
70
71.section .foo2, "ax"
72.quad 0
73
74.section .bar1, "aw"
75.quad 0
76
77.section .bar2, "aw"
78.quad 0
79
80.section .bar3, "aw"
81.quad 0
deps/lld/test/ELF/linkerscript/at3.s created+38
...@@ -0,0 +1,38 @@
1# REQUIRES: x86
2# RUN: llvm-mc -filetype=obj -triple=x86_64-pc-linux %s -o %t.o
3# RUN: echo "MEMORY { \
4# RUN: FOO (ax) : ORIGIN = 0x1000, LENGTH = 0x100 \
5# RUN: BAR (ax) : ORIGIN = 0x2000, LENGTH = 0x100 \
6# RUN: ZED (ax) : ORIGIN = 0x3000, LENGTH = 0x100 \
7# RUN: FLASH (ax) : ORIGIN = 0x6000, LENGTH = 0x200 \
8# RUN: } \
9# RUN: SECTIONS { \
10# RUN: .foo1 : { *(.foo1) } > FOO AT>FLASH \
11# RUN: .foo2 : { *(.foo2) BYTE(0x42) } > BAR AT>FLASH \
12# RUN: .foo3 : { *(.foo3) } > ZED AT>FLASH \
13# RUN: }" > %t.script
14# RUN: ld.lld %t.o --script %t.script -o %t
15# RUN: llvm-readelf -sections -program-headers %t | FileCheck %s
16
17# CHECK: .foo1 PROGBITS 0000000000001000 001000
18# CHECK: .foo2 PROGBITS 0000000000002000 002000
19# CHECK: .foo3 PROGBITS 0000000000003000 003000
20
21# CHECK: Program Headers:
22# CHECK-NOT: LOAD
23
24# CHECK: Type Offset VirtAddr PhysAddr
25# CHECK-NEXT: LOAD 0x001000 0x0000000000001000 0x0000000000006000
26# CHECK-NEXT: LOAD 0x002000 0x0000000000002000 0x0000000000006008
27# CHECK-NEXT: LOAD 0x003000 0x0000000000003000 0x0000000000006011
28
29# CHECK-NOT: LOAD
30
31.section .foo1, "a"
32.quad 0
33
34.section .foo2, "ax"
35.quad 0
36
37.section .foo3, "ax"
38.quad 0
deps/lld/test/ELF/linkerscript/merge-header-load.s created+21
...@@ -0,0 +1,21 @@
1# REQUIRES: x86
2# RUN: llvm-mc -filetype=obj -triple=x86_64-pc-linux %s -o %t.o
3# RUN: echo "SECTIONS { \
4# RUN: . = 0xffffffff80000200; \
5# RUN: .text : AT (0x4200) { *(.text) } \
6# RUN: }" > %t.script
7# RUN: ld.lld %t.o --script %t.script -o %t
8# RUN: llvm-readelf -program-headers %t | FileCheck %s
9
10# Test that we put the header in the first PT_LOAD. We used to create a PT_LOAD
11# just for it and it would have a different virtual to physical address delta.
12
13# CHECK: Program Headers:
14# CHECK: Type Offset VirtAddr PhysAddr
15# CHECK-NEXT: PHDR 0x000040 0xffffffff80000040 0x0000000000004040
16# CHECK-NEXT: LOAD 0x000000 0xffffffff80000000 0x0000000000004000
17# CHECK-NOT: LOAD
18
19.global _start
20_start:
21nop
deps/lld/test/ELF/linkerscript/parse-section-in-addr.s created+10
...@@ -0,0 +1,10 @@
1# REQUIRES: x86
2# RUN: llvm-mc -filetype=obj -triple=x86_64-pc-linux %s -o %t.o
3
4# RUN: echo "SECTIONS { \
5# RUN: .foo-bar : AT(ADDR(.foo-bar)) { *(.text) } \
6# RUN: }" > %t.script
7# RUN: ld.lld -o %t.so --script %t.script %t.o -shared
8# RUN: llvm-readelf -S %t.so | FileCheck %s
9
10# CHECK: .foo-bar
deps/lld/test/ELF/mips-gp-disp-ver.s created+15
...@@ -0,0 +1,15 @@
1# MIPS BFD linker puts _gp_disp symbol into DSO files and assigns zero
2# version definition index to it. This value means 'unversioned local symbol'
3# while _gp_disp is a section global symbol. We have to handle this bug
4# in the LLD because BFD linker is used for building MIPS toolchain
5# libraries. This test checks such handling.
6
7# RUN: llvm-mc -filetype=obj -triple=mips-unknown-linux %s -o %t.o
8# RUN: ld.lld %t.o %S/Inputs/mips-gp-dips-corrupt-ver.so
9
10# REQUIRES: mips
11
12 .global __start
13 .text
14__start:
15 lw $t0, %got(foo)($gp)
deps/lld/test/ELF/pie.s+1-1
...@@ -48,7 +48,7 @@...@@ -48,7 +48,7 @@
48# CHECK: Type: PT_DYNAMIC48# CHECK: Type: PT_DYNAMIC
4949
50## Check -nopie50## Check -nopie
51# RUN: ld.lld -nopie %t1.o -o %t251# RUN: ld.lld -no-pie %t1.o -o %t2
52# RUN: llvm-readobj -file-headers -r %t2 | FileCheck %s --check-prefix=NOPIE52# RUN: llvm-readobj -file-headers -r %t2 | FileCheck %s --check-prefix=NOPIE
53# NOPIE-NOT: Type: SharedObject53# NOPIE-NOT: Type: SharedObject
5454
deps/lld/test/ELF/x86-64-retpoline-znow.s created+53
...@@ -0,0 +1,53 @@
1// REQUIRES: x86
2// RUN: llvm-mc -filetype=obj -triple=x86_64-unknown-linux %s -o %t1.o
3// RUN: llvm-mc -filetype=obj -triple=x86_64-unknown-linux %p/Inputs/shared.s -o %t2.o
4// RUN: ld.lld -shared %t2.o -o %t2.so
5
6// RUN: ld.lld -shared %t1.o %t2.so -o %t.exe -z retpolineplt -z now
7// RUN: llvm-objdump -d -s %t.exe | FileCheck %s
8
9// CHECK: Disassembly of section .plt:
10// CHECK-NEXT: .plt:
11// CHECK-NEXT: 1010: e8 0b 00 00 00 callq 11 <.plt+0x10>
12// CHECK-NEXT: 1015: f3 90 pause
13// CHECK-NEXT: 1017: 0f ae e8 lfence
14// CHECK-NEXT: 101a: eb f9 jmp -7 <.plt+0x5>
15// CHECK-NEXT: 101c: cc int3
16// CHECK-NEXT: 101d: cc int3
17// CHECK-NEXT: 101e: cc int3
18// CHECK-NEXT: 101f: cc int3
19// CHECK-NEXT: 1020: 4c 89 1c 24 movq %r11, (%rsp)
20// CHECK-NEXT: 1024: c3 retq
21// CHECK-NEXT: 1025: cc int3
22// CHECK-NEXT: 1026: cc int3
23// CHECK-NEXT: 1027: cc int3
24// CHECK-NEXT: 1028: cc int3
25// CHECK-NEXT: 1029: cc int3
26// CHECK-NEXT: 102a: cc int3
27// CHECK-NEXT: 102b: cc int3
28// CHECK-NEXT: 102c: cc int3
29// CHECK-NEXT: 102d: cc int3
30// CHECK-NEXT: 102e: cc int3
31// CHECK-NEXT: 102f: cc int3
32// CHECK-NEXT: 1030: 4c 8b 1d c1 10 00 00 movq 4289(%rip), %r11
33// CHECK-NEXT: 1037: e9 d4 ff ff ff jmp -44 <.plt>
34// CHECK-NEXT: 103c: cc int3
35// CHECK-NEXT: 103d: cc int3
36// CHECK-NEXT: 103e: cc int3
37// CHECK-NEXT: 103f: cc int3
38// CHECK-NEXT: 1040: 4c 8b 1d b9 10 00 00 movq 4281(%rip), %r11
39// CHECK-NEXT: 1047: e9 c4 ff ff ff jmp -60 <.plt>
40// CHECK-NEXT: 104c: cc int3
41// CHECK-NEXT: 104d: cc int3
42// CHECK-NEXT: 104e: cc int3
43// CHECK-NEXT: 104f: cc int3
44
45// CHECK: Contents of section .got.plt:
46// CHECK-NEXT: 20e0 00200000 00000000 00000000 00000000
47// CHECK-NEXT: 20f0 00000000 00000000 00000000 00000000
48// CHECK-NEXT: 2100 00000000 00000000
49
50.global _start
51_start:
52 jmp bar@PLT
53 jmp zed@PLT
deps/lld/test/ELF/x86-64-retpoline.s created+66
...@@ -0,0 +1,66 @@
1// REQUIRES: x86
2// RUN: llvm-mc -filetype=obj -triple=x86_64-unknown-linux %s -o %t1.o
3// RUN: llvm-mc -filetype=obj -triple=x86_64-unknown-linux %p/Inputs/shared.s -o %t2.o
4// RUN: ld.lld -shared %t2.o -o %t2.so
5
6// RUN: ld.lld -shared %t1.o %t2.so -o %t.exe -z retpolineplt
7// RUN: llvm-objdump -d -s %t.exe | FileCheck %s
8
9// CHECK: Disassembly of section .plt:
10// CHECK-NEXT: .plt:
11// CHECK-NEXT: 1010: ff 35 f2 0f 00 00 pushq 4082(%rip)
12// CHECK-NEXT: 1016: 4c 8b 1d f3 0f 00 00 movq 4083(%rip), %r11
13// CHECK-NEXT: 101d: e8 0e 00 00 00 callq 14 <.plt+0x20>
14// CHECK-NEXT: 1022: f3 90 pause
15// CHECK-NEXT: 1024: 0f ae e8 lfence
16// CHECK-NEXT: 1027: eb f9 jmp -7 <.plt+0x12>
17// CHECK-NEXT: 1029: cc int3
18// CHECK-NEXT: 102a: cc int3
19// CHECK-NEXT: 102b: cc int3
20// CHECK-NEXT: 102c: cc int3
21// CHECK-NEXT: 102d: cc int3
22// CHECK-NEXT: 102e: cc int3
23// CHECK-NEXT: 102f: cc int3
24// CHECK-NEXT: 1030: 4c 89 1c 24 movq %r11, (%rsp)
25// CHECK-NEXT: 1034: c3 retq
26// CHECK-NEXT: 1035: cc int3
27// CHECK-NEXT: 1036: cc int3
28// CHECK-NEXT: 1037: cc int3
29// CHECK-NEXT: 1038: cc int3
30// CHECK-NEXT: 1039: cc int3
31// CHECK-NEXT: 103a: cc int3
32// CHECK-NEXT: 103b: cc int3
33// CHECK-NEXT: 103c: cc int3
34// CHECK-NEXT: 103d: cc int3
35// CHECK-NEXT: 103e: cc int3
36// CHECK-NEXT: 103f: cc int3
37// CHECK-NEXT: 1040: 4c 8b 1d d1 0f 00 00 movq 4049(%rip), %r11
38// CHECK-NEXT: 1047: e8 e4 ff ff ff callq -28 <.plt+0x20>
39// CHECK-NEXT: 104c: e9 d1 ff ff ff jmp -47 <.plt+0x12>
40// CHECK-NEXT: 1051: 68 00 00 00 00 pushq $0
41// CHECK-NEXT: 1056: e9 b5 ff ff ff jmp -75 <.plt>
42// CHECK-NEXT: 105b: cc int3
43// CHECK-NEXT: 105c: cc int3
44// CHECK-NEXT: 105d: cc int3
45// CHECK-NEXT: 105e: cc int3
46// CHECK-NEXT: 105f: cc int3
47// CHECK-NEXT: 1060: 4c 8b 1d b9 0f 00 00 movq 4025(%rip), %r11
48// CHECK-NEXT: 1067: e8 c4 ff ff ff callq -60 <.plt+0x20>
49// CHECK-NEXT: 106c: e9 b1 ff ff ff jmp -79 <.plt+0x12>
50// CHECK-NEXT: 1071: 68 01 00 00 00 pushq $1
51// CHECK-NEXT: 1076: e9 95 ff ff ff jmp -107 <.plt>
52// CHECK-NEXT: 107b: cc int3
53// CHECK-NEXT: 107c: cc int3
54// CHECK-NEXT: 107d: cc int3
55// CHECK-NEXT: 107e: cc int3
56// CHECK-NEXT: 107f: cc int3
57
58// CHECK: Contents of section .got.plt:
59// CHECK-NEXT: 2000 00300000 00000000 00000000 00000000
60// CHECK-NEXT: 2010 00000000 00000000 51100000 00000000
61// CHECK-NEXT: 2020 71100000 00000000
62
63.global _start
64_start:
65 jmp bar@PLT
66 jmp zed@PLT