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update embedded LLD to 6.0.0rc2

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This commit is contained in:
Andrew Kelley 2018-02-07 17:38:02 -05:00
parent aa043a6339
commit 38aed5af8b
31 changed files with 857 additions and 46 deletions
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4
deps/lld-prebuilt/ELF/Options.inc vendored
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@ -230,6 +230,8 @@ OPTION(prefix_2, "no-merge-exidx-entries", no_merge_exidx_entries, Flag, INVALID
OPTION(prefix_2, "no-mmap-output-file", no_mmap_output_file, Flag, INVALID, INVALID, nullptr, 0, 0, nullptr, nullptr, nullptr)
OPTION(prefix_3, "no-omagic", no_omagic, Flag, INVALID, INVALID, nullptr, 0, 0,
"Do not set the text data sections to be writable", "<magic>", nullptr)
OPTION(prefix_2, "no-pie", no_pie, Flag, INVALID, INVALID, nullptr, 0, 0,
"Do not create a position independent executable", nullptr, nullptr)
OPTION(prefix_2, "no-print-gc-sections", no_print_gc_sections, Flag, INVALID, INVALID, nullptr, 0, 0,
"Do not list removed unused sections", nullptr, nullptr)
OPTION(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
OPTION(prefix_2, "noinhibit-exec", noinhibit_exec, Flag, INVALID, INVALID, nullptr, 0, 0,
"Retain the executable output file whenever it is still usable", nullptr, nullptr)
OPTION(prefix_2, "non_shared", alias_Bstatic_non_shared, Flag, INVALID, Bstatic, nullptr, 0, 0, nullptr, nullptr, nullptr)
OPTION(prefix_2, "nopie", nopie, Flag, INVALID, INVALID, nullptr, 0, 0,
"Do not create a position independent executable", nullptr, nullptr)
OPTION(prefix_2, "nostdlib", nostdlib, Flag, INVALID, INVALID, nullptr, 0, 0,
"Only search directories specified on the command line", nullptr, nullptr)
OPTION(prefix_1, "N", alias_omagic, Flag, INVALID, omagic, nullptr, 0, 0, nullptr, nullptr, nullptr)

3
deps/lld/ELF/AArch64ErrataFix.cpp vendored
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@ -47,6 +47,7 @@
using namespace llvm;
using namespace llvm::ELF;
using namespace llvm::object;
using namespace llvm::support;
using namespace llvm::support::endian;
using namespace lld;
@ -357,7 +358,7 @@ static uint64_t scanCortexA53Errata843419(InputSection *IS, uint64_t &Off,
uint64_t PatchOff = 0;
const uint8_t *Buf = IS->Data.begin();
const uint32_t *InstBuf = reinterpret_cast<const uint32_t *>(Buf + Off);
const ulittle32_t *InstBuf = reinterpret_cast<const ulittle32_t *>(Buf + Off);
uint32_t Instr1 = *InstBuf++;
uint32_t Instr2 = *InstBuf++;
uint32_t Instr3 = *InstBuf++;

146
deps/lld/ELF/Arch/X86.cpp vendored
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@ -21,7 +21,7 @@ using namespace lld;
using namespace lld::elf;
namespace {
class X86 final : public TargetInfo {
class X86 : public TargetInfo {
public:
X86();
RelExpr getRelExpr(RelType Type, const Symbol &S,
@ -399,7 +399,145 @@ void X86::relaxTlsLdToLe(uint8_t *Loc, RelType Type, uint64_t Val) const {
memcpy(Loc - 2, Inst, sizeof(Inst));
}
TargetInfo *elf::getX86TargetInfo() {
static X86 Target;
return &Target;
namespace {
class RetpolinePic : public X86 {
public:
RetpolinePic();
void writeGotPlt(uint8_t *Buf, const Symbol &S) const override;
void writePltHeader(uint8_t *Buf) const override;
void writePlt(uint8_t *Buf, uint64_t GotPltEntryAddr, uint64_t PltEntryAddr,
int32_t Index, unsigned RelOff) const override;
};
class RetpolineNoPic : public X86 {
public:
RetpolineNoPic();
void writeGotPlt(uint8_t *Buf, const Symbol &S) const override;
void writePltHeader(uint8_t *Buf) const override;
void writePlt(uint8_t *Buf, uint64_t GotPltEntryAddr, uint64_t PltEntryAddr,
int32_t Index, unsigned RelOff) const override;
};
} // namespace
RetpolinePic::RetpolinePic() {
PltHeaderSize = 48;
PltEntrySize = 32;
}
void RetpolinePic::writeGotPlt(uint8_t *Buf, const Symbol &S) const {
write32le(Buf, S.getPltVA() + 17);
}
void RetpolinePic::writePltHeader(uint8_t *Buf) const {
const uint8_t Insn[] = {
0xff, 0xb3, 0, 0, 0, 0, // 0: pushl GOTPLT+4(%ebx)
0x50, // 6: pushl %eax
0x8b, 0x83, 0, 0, 0, 0, // 7: mov GOTPLT+8(%ebx), %eax
0xe8, 0x0e, 0x00, 0x00, 0x00, // d: call next
0xf3, 0x90, // 12: loop: pause
0x0f, 0xae, 0xe8, // 14: lfence
0xeb, 0xf9, // 17: jmp loop
0xcc, 0xcc, 0xcc, 0xcc, 0xcc, 0xcc, 0xcc, // 19: int3; .align 16
0x89, 0x0c, 0x24, // 20: next: mov %ecx, (%esp)
0x8b, 0x4c, 0x24, 0x04, // 23: mov 0x4(%esp), %ecx
0x89, 0x44, 0x24, 0x04, // 27: mov %eax ,0x4(%esp)
0x89, 0xc8, // 2b: mov %ecx, %eax
0x59, // 2d: pop %ecx
0xc3, // 2e: ret
};
memcpy(Buf, Insn, sizeof(Insn));
uint32_t Ebx = InX::Got->getVA() + InX::Got->getSize();
uint32_t GotPlt = InX::GotPlt->getVA() - Ebx;
write32le(Buf + 2, GotPlt + 4);
write32le(Buf + 9, GotPlt + 8);
}
void RetpolinePic::writePlt(uint8_t *Buf, uint64_t GotPltEntryAddr,
uint64_t PltEntryAddr, int32_t Index,
unsigned RelOff) const {
const uint8_t Insn[] = {
0x50, // pushl %eax
0x8b, 0x83, 0, 0, 0, 0, // mov foo@GOT(%ebx), %eax
0xe8, 0, 0, 0, 0, // call plt+0x20
0xe9, 0, 0, 0, 0, // jmp plt+0x12
0x68, 0, 0, 0, 0, // pushl $reloc_offset
0xe9, 0, 0, 0, 0, // jmp plt+0
};
memcpy(Buf, Insn, sizeof(Insn));
uint32_t Ebx = InX::Got->getVA() + InX::Got->getSize();
write32le(Buf + 3, GotPltEntryAddr - Ebx);
write32le(Buf + 8, -Index * PltEntrySize - PltHeaderSize - 12 + 32);
write32le(Buf + 13, -Index * PltEntrySize - PltHeaderSize - 17 + 18);
write32le(Buf + 18, RelOff);
write32le(Buf + 23, -Index * PltEntrySize - PltHeaderSize - 27);
}
RetpolineNoPic::RetpolineNoPic() {
PltHeaderSize = 48;
PltEntrySize = 32;
}
void RetpolineNoPic::writeGotPlt(uint8_t *Buf, const Symbol &S) const {
write32le(Buf, S.getPltVA() + 16);
}
void RetpolineNoPic::writePltHeader(uint8_t *Buf) const {
const uint8_t PltData[] = {
0xff, 0x35, 0, 0, 0, 0, // 0: pushl GOTPLT+4
0x50, // 6: pushl %eax
0xa1, 0, 0, 0, 0, // 7: mov GOTPLT+8, %eax
0xe8, 0x0f, 0x00, 0x00, 0x00, // c: call next
0xf3, 0x90, // 11: loop: pause
0x0f, 0xae, 0xe8, // 13: lfence
0xeb, 0xf9, // 16: jmp loop
0xcc, 0xcc, 0xcc, 0xcc, 0xcc, // 18: int3
0xcc, 0xcc, 0xcc, // 1f: int3; .align 16
0x89, 0x0c, 0x24, // 20: next: mov %ecx, (%esp)
0x8b, 0x4c, 0x24, 0x04, // 23: mov 0x4(%esp), %ecx
0x89, 0x44, 0x24, 0x04, // 27: mov %eax ,0x4(%esp)
0x89, 0xc8, // 2b: mov %ecx, %eax
0x59, // 2d: pop %ecx
0xc3, // 2e: ret
};
memcpy(Buf, PltData, sizeof(PltData));
uint32_t GotPlt = InX::GotPlt->getVA();
write32le(Buf + 2, GotPlt + 4);
write32le(Buf + 8, GotPlt + 8);
}
void RetpolineNoPic::writePlt(uint8_t *Buf, uint64_t GotPltEntryAddr,
uint64_t PltEntryAddr, int32_t Index,
unsigned RelOff) const {
const uint8_t Insn[] = {
0x50, // 0: pushl %eax
0xa1, 0, 0, 0, 0, // 1: mov foo_in_GOT, %eax
0xe8, 0, 0, 0, 0, // 6: call plt+0x20
0xe9, 0, 0, 0, 0, // b: jmp plt+0x11
0x68, 0, 0, 0, 0, // 10: pushl $reloc_offset
0xe9, 0, 0, 0, 0, // 15: jmp plt+0
};
memcpy(Buf, Insn, sizeof(Insn));
write32le(Buf + 2, GotPltEntryAddr);
write32le(Buf + 7, -Index * PltEntrySize - PltHeaderSize - 11 + 32);
write32le(Buf + 12, -Index * PltEntrySize - PltHeaderSize - 16 + 17);
write32le(Buf + 17, RelOff);
write32le(Buf + 22, -Index * PltEntrySize - PltHeaderSize - 26);
}
TargetInfo *elf::getX86TargetInfo() {
if (Config->ZRetpolineplt) {
if (Config->Pic) {
static RetpolinePic T;
return &T;
}
static RetpolineNoPic T;
return &T;
}
static X86 T;
return &T;
}

127
deps/lld/ELF/Arch/X86_64.cpp vendored
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@ -23,7 +23,7 @@ using namespace lld;
using namespace lld::elf;
namespace {
template <class ELFT> class X86_64 final : public TargetInfo {
template <class ELFT> class X86_64 : public TargetInfo {
public:
X86_64();
RelExpr getRelExpr(RelType Type, const Symbol &S,
@ -460,12 +460,125 @@ void X86_64<ELFT>::relaxGot(uint8_t *Loc, uint64_t Val) const {
write32le(Loc - 1, Val + 1);
}
TargetInfo *elf::getX32TargetInfo() {
static X86_64<ELF32LE> Target;
return &Target;
namespace {
template <class ELFT> class Retpoline : public X86_64<ELFT> {
public:
Retpoline();
void writeGotPlt(uint8_t *Buf, const Symbol &S) const override;
void writePltHeader(uint8_t *Buf) const override;
void writePlt(uint8_t *Buf, uint64_t GotPltEntryAddr, uint64_t PltEntryAddr,
int32_t Index, unsigned RelOff) const override;
};
template <class ELFT> class RetpolineZNow : public X86_64<ELFT> {
public:
RetpolineZNow();
void writeGotPlt(uint8_t *Buf, const Symbol &S) const override {}
void writePltHeader(uint8_t *Buf) const override;
void writePlt(uint8_t *Buf, uint64_t GotPltEntryAddr, uint64_t PltEntryAddr,
int32_t Index, unsigned RelOff) const override;
};
} // namespace
template <class ELFT> Retpoline<ELFT>::Retpoline() {
TargetInfo::PltHeaderSize = 48;
TargetInfo::PltEntrySize = 32;
}
TargetInfo *elf::getX86_64TargetInfo() {
static X86_64<ELF64LE> Target;
return &Target;
template <class ELFT>
void Retpoline<ELFT>::writeGotPlt(uint8_t *Buf, const Symbol &S) const {
write32le(Buf, S.getPltVA() + 17);
}
template <class ELFT> void Retpoline<ELFT>::writePltHeader(uint8_t *Buf) const {
const uint8_t Insn[] = {
0xff, 0x35, 0, 0, 0, 0, // 0: pushq GOTPLT+8(%rip)
0x4c, 0x8b, 0x1d, 0, 0, 0, 0, // 6: mov GOTPLT+16(%rip), %r11
0xe8, 0x0e, 0x00, 0x00, 0x00, // d: callq next
0xf3, 0x90, // 12: loop: pause
0x0f, 0xae, 0xe8, // 14: lfence
0xeb, 0xf9, // 17: jmp loop
0xcc, 0xcc, 0xcc, 0xcc, 0xcc, 0xcc, 0xcc, // 19: int3; .align 16
0x4c, 0x89, 0x1c, 0x24, // 20: next: mov %r11, (%rsp)
0xc3, // 24: ret
};
memcpy(Buf, Insn, sizeof(Insn));
uint64_t GotPlt = InX::GotPlt->getVA();
uint64_t Plt = InX::Plt->getVA();
write32le(Buf + 2, GotPlt - Plt - 6 + 8);
write32le(Buf + 9, GotPlt - Plt - 13 + 16);
}
template <class ELFT>
void Retpoline<ELFT>::writePlt(uint8_t *Buf, uint64_t GotPltEntryAddr,
uint64_t PltEntryAddr, int32_t Index,
unsigned RelOff) const {
const uint8_t Insn[] = {
0x4c, 0x8b, 0x1d, 0, 0, 0, 0, // 0: mov foo@GOTPLT(%rip), %r11
0xe8, 0, 0, 0, 0, // 7: callq plt+0x20
0xe9, 0, 0, 0, 0, // c: jmp plt+0x12
0x68, 0, 0, 0, 0, // 11: pushq <relocation index>
0xe9, 0, 0, 0, 0, // 16: jmp plt+0
};
memcpy(Buf, Insn, sizeof(Insn));
uint64_t Off = TargetInfo::PltHeaderSize + TargetInfo::PltEntrySize * Index;
write32le(Buf + 3, GotPltEntryAddr - PltEntryAddr - 7);
write32le(Buf + 8, -Off - 12 + 32);
write32le(Buf + 13, -Off - 17 + 18);
write32le(Buf + 18, Index);
write32le(Buf + 23, -Off - 27);
}
template <class ELFT> RetpolineZNow<ELFT>::RetpolineZNow() {
TargetInfo::PltHeaderSize = 32;
TargetInfo::PltEntrySize = 16;
}
template <class ELFT>
void RetpolineZNow<ELFT>::writePltHeader(uint8_t *Buf) const {
const uint8_t Insn[] = {
0xe8, 0x0b, 0x00, 0x00, 0x00, // 0: call next
0xf3, 0x90, // 5: loop: pause
0x0f, 0xae, 0xe8, // 7: lfence
0xeb, 0xf9, // a: jmp loop
0xcc, 0xcc, 0xcc, 0xcc, // c: int3; .align 16
0x4c, 0x89, 0x1c, 0x24, // 10: next: mov %r11, (%rsp)
0xc3, // 14: ret
};
memcpy(Buf, Insn, sizeof(Insn));
}
template <class ELFT>
void RetpolineZNow<ELFT>::writePlt(uint8_t *Buf, uint64_t GotPltEntryAddr,
uint64_t PltEntryAddr, int32_t Index,
unsigned RelOff) const {
const uint8_t Insn[] = {
0x4c, 0x8b, 0x1d, 0, 0, 0, 0, // mov foo@GOTPLT(%rip), %r11
0xe9, 0, 0, 0, 0, // jmp plt+0
};
memcpy(Buf, Insn, sizeof(Insn));
write32le(Buf + 3, GotPltEntryAddr - PltEntryAddr - 7);
write32le(Buf + 8,
-Index * TargetInfo::PltEntrySize - TargetInfo::PltHeaderSize - 12);
}
template <class ELFT> TargetInfo *getTargetInfo() {
if (Config->ZRetpolineplt) {
if (Config->ZNow) {
static RetpolineZNow<ELFT> T;
return &T;
}
static Retpoline<ELFT> T;
return &T;
}
static X86_64<ELFT> T;
return &T;
}
TargetInfo *elf::getX32TargetInfo() { return getTargetInfo<ELF32LE>(); }
TargetInfo *elf::getX86_64TargetInfo() { return getTargetInfo<ELF64LE>(); }

1
deps/lld/ELF/Config.h vendored
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@ -159,6 +159,7 @@ struct Configuration {
bool ZRelro;
bool ZRodynamic;
bool ZText;
bool ZRetpolineplt;
bool ExitEarly;
bool ZWxneeded;
DiscardPolicy Discard;

3
deps/lld/ELF/Driver.cpp vendored
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@ -638,7 +638,7 @@ void LinkerDriver::readConfigs(opt::InputArgList &Args) {
Config->Optimize = args::getInteger(Args, OPT_O, 1);
Config->OrphanHandling = getOrphanHandling(Args);
Config->OutputFile = Args.getLastArgValue(OPT_o);
Config->Pie = Args.hasFlag(OPT_pie, OPT_nopie, false);
Config->Pie = Args.hasFlag(OPT_pie, OPT_no_pie, false);
Config->PrintGcSections =
Args.hasFlag(OPT_print_gc_sections, OPT_no_print_gc_sections, false);
Config->Rpath = getRpath(Args);
@ -674,6 +674,7 @@ void LinkerDriver::readConfigs(opt::InputArgList &Args) {
Config->ZNow = hasZOption(Args, "now");
Config->ZOrigin = hasZOption(Args, "origin");
Config->ZRelro = !hasZOption(Args, "norelro");
Config->ZRetpolineplt = hasZOption(Args, "retpolineplt");
Config->ZRodynamic = hasZOption(Args, "rodynamic");
Config->ZStackSize = args::getZOptionValue(Args, OPT_z, "stack-size", 0);
Config->ZText = !hasZOption(Args, "notext");

8
deps/lld/ELF/InputFiles.cpp vendored
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@ -856,6 +856,14 @@ template <class ELFT> void SharedFile<ELFT>::parseRest() {
continue;
}
if (Config->EMachine == EM_MIPS) {
// FIXME: MIPS BFD linker puts _gp_disp symbol into DSO files
// and incorrectly assigns VER_NDX_LOCAL to this section global
// symbol. Here is a workaround for this bug.
if (Versym && VersymIndex == VER_NDX_LOCAL && Name == "_gp_disp")
continue;
}
const Elf_Verdef *Ver = nullptr;
if (VersymIndex != VER_NDX_GLOBAL) {
if (VersymIndex >= Verdefs.size() || VersymIndex == VER_NDX_LOCAL) {

53
deps/lld/ELF/LinkerScript.cpp vendored
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@ -589,8 +589,12 @@ void LinkerScript::output(InputSection *S) {
// If there is a memory region associated with this input section, then
// place the section in that region and update the region index.
if (Ctx->LMARegion)
Ctx->LMARegion->CurPos += Pos - Before;
// FIXME: should we also produce overflow errors for LMARegion?
if (Ctx->MemRegion) {
uint64_t &CurOffset = Ctx->MemRegionOffset[Ctx->MemRegion];
uint64_t &CurOffset = Ctx->MemRegion->CurPos;
CurOffset += Pos - Before;
uint64_t CurSize = CurOffset - Ctx->MemRegion->Origin;
if (CurSize > Ctx->MemRegion->Length) {
@ -608,13 +612,6 @@ void LinkerScript::switchTo(OutputSection *Sec) {
Ctx->OutSec = Sec;
Ctx->OutSec->Addr = advance(0, Ctx->OutSec->Alignment);
// If neither AT nor AT> is specified for an allocatable section, the linker
// will set the LMA such that the difference between VMA and LMA for the
// section is the same as the preceding output section in the same region
// https://sourceware.org/binutils/docs-2.20/ld/Output-Section-LMA.html
if (Ctx->LMAOffset)
Ctx->OutSec->LMAOffset = Ctx->LMAOffset();
}
// This function searches for a memory region to place the given output
@ -624,9 +621,8 @@ MemoryRegion *LinkerScript::findMemoryRegion(OutputSection *Sec) {
// If a memory region name was specified in the output section command,
// then try to find that region first.
if (!Sec->MemoryRegionName.empty()) {
auto It = MemoryRegions.find(Sec->MemoryRegionName);
if (It != MemoryRegions.end())
return It->second;
if (MemoryRegion *M = MemoryRegions.lookup(Sec->MemoryRegionName))
return M;
error("memory region '" + Sec->MemoryRegionName + "' not declared");
return nullptr;
}
@ -659,16 +655,25 @@ void LinkerScript::assignOffsets(OutputSection *Sec) {
setDot(Sec->AddrExpr, Sec->Location, false);
Ctx->MemRegion = Sec->MemRegion;
Ctx->LMARegion = Sec->LMARegion;
if (Ctx->MemRegion)
Dot = Ctx->MemRegionOffset[Ctx->MemRegion];
if (Sec->LMAExpr) {
uint64_t D = Dot;
Ctx->LMAOffset = [=] { return Sec->LMAExpr().getValue() - D; };
}
Dot = Ctx->MemRegion->CurPos;
switchTo(Sec);
if (Sec->LMAExpr)
Ctx->LMAOffset = Sec->LMAExpr().getValue() - Dot;
if (MemoryRegion *MR = Sec->LMARegion)
Ctx->LMAOffset = MR->CurPos - Dot;
// If neither AT nor AT> is specified for an allocatable section, the linker
// will set the LMA such that the difference between VMA and LMA for the
// section is the same as the preceding output section in the same region
// https://sourceware.org/binutils/docs-2.20/ld/Output-Section-LMA.html
if (PhdrEntry *L = Ctx->OutSec->PtLoad)
L->LMAOffset = Ctx->LMAOffset;
// The Size previously denoted how many InputSections had been added to this
// section, and was used for sorting SHF_LINK_ORDER sections. Reset it to
// compute the actual size value.
@ -689,7 +694,9 @@ void LinkerScript::assignOffsets(OutputSection *Sec) {
Cmd->Offset = Dot - Ctx->OutSec->Addr;
Dot += Cmd->Size;
if (Ctx->MemRegion)
Ctx->MemRegionOffset[Ctx->MemRegion] += Cmd->Size;
Ctx->MemRegion->CurPos += Cmd->Size;
if (Ctx->LMARegion)
Ctx->LMARegion->CurPos += Cmd->Size;
Ctx->OutSec->Size = Dot - Ctx->OutSec->Addr;
continue;
}
@ -788,6 +795,12 @@ void LinkerScript::adjustSectionsAfterSorting() {
if (auto *Sec = dyn_cast<OutputSection>(Base)) {
if (!Sec->Live)
continue;
if (!Sec->LMARegionName.empty()) {
if (MemoryRegion *M = MemoryRegions.lookup(Sec->LMARegionName))
Sec->LMARegion = M;
else
error("memory region '" + Sec->LMARegionName + "' not declared");
}
Sec->MemRegion = findMemoryRegion(Sec);
// Handle align (e.g. ".foo : ALIGN(16) { ... }").
if (Sec->AlignExpr)
@ -878,8 +891,8 @@ void LinkerScript::allocateHeaders(std::vector<PhdrEntry *> &Phdrs) {
LinkerScript::AddressState::AddressState() {
for (auto &MRI : Script->MemoryRegions) {
const MemoryRegion *MR = MRI.second;
MemRegionOffset[MR] = MR->Origin;
MemoryRegion *MR = MRI.second;
MR->CurPos = MR->Origin;
}
}

10
deps/lld/ELF/LinkerScript.h vendored
View File

@ -118,11 +118,17 @@ enum class ConstraintKind { NoConstraint, ReadOnly, ReadWrite };
// target memory. Instances of the struct are created by parsing the
// MEMORY command.
struct MemoryRegion {
MemoryRegion(StringRef Name, uint64_t Origin, uint64_t Length, uint32_t Flags,
uint32_t NegFlags)
: Name(Name), Origin(Origin), Length(Length), Flags(Flags),
NegFlags(NegFlags) {}
std::string Name;
uint64_t Origin;
uint64_t Length;
uint32_t Flags;
uint32_t NegFlags;
uint64_t CurPos = 0;
};
// This struct represents one section match pattern in SECTIONS() command.
@ -200,8 +206,8 @@ class LinkerScript final {
uint64_t ThreadBssOffset = 0;
OutputSection *OutSec = nullptr;
MemoryRegion *MemRegion = nullptr;
llvm::DenseMap<const MemoryRegion *, uint64_t> MemRegionOffset;
std::function<uint64_t()> LMAOffset;
MemoryRegion *LMARegion = nullptr;
uint64_t LMAOffset = 0;
};
llvm::DenseMap<StringRef, OutputSection *> NameToOutputSection;

4
deps/lld/ELF/Options.td vendored
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@ -202,6 +202,8 @@ def no_gnu_unique: F<"no-gnu-unique">,
def no_merge_exidx_entries: F<"no-merge-exidx-entries">,
HelpText<"Disable merging .ARM.exidx entries">;
def no_pie: F<"no-pie">, HelpText<"Do not create a position independent executable">;
def no_threads: F<"no-threads">,
HelpText<"Do not run the linker multi-threaded">;
@ -211,8 +213,6 @@ def no_whole_archive: F<"no-whole-archive">,
def noinhibit_exec: F<"noinhibit-exec">,
HelpText<"Retain the executable output file whenever it is still usable">;
def nopie: F<"nopie">, HelpText<"Do not create a position independent executable">;
def no_omagic: Flag<["--"], "no-omagic">, MetaVarName<"<magic>">,
HelpText<"Do not set the text data sections to be writable">;

5
deps/lld/ELF/OutputSections.h vendored
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@ -49,7 +49,7 @@ public:
static bool classof(const BaseCommand *C);
uint64_t getLMA() const { return Addr + LMAOffset; }
uint64_t getLMA() const { return PtLoad ? Addr + PtLoad->LMAOffset : Addr; }
template <typename ELFT> void writeHeaderTo(typename ELFT::Shdr *SHdr);
unsigned SectionIndex;
@ -78,7 +78,6 @@ public:
// The following fields correspond to Elf_Shdr members.
uint64_t Offset = 0;
uint64_t LMAOffset = 0;
uint64_t Addr = 0;
uint32_t ShName = 0;
@ -89,6 +88,7 @@ public:
// The following members are normally only used in linker scripts.
MemoryRegion *MemRegion = nullptr;
MemoryRegion *LMARegion = nullptr;
Expr AddrExpr;
Expr AlignExpr;
Expr LMAExpr;
@ -99,6 +99,7 @@ public:
ConstraintKind Constraint = ConstraintKind::NoConstraint;
std::string Location;
std::string MemoryRegionName;
std::string LMARegionName;
bool Noload = false;
template <class ELFT> void finalize();

15
deps/lld/ELF/ScriptParser.cpp vendored
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@ -709,6 +709,14 @@ OutputSection *ScriptParser::readOutputSectionDescription(StringRef OutSec) {
if (consume(">"))
Cmd->MemoryRegionName = next();
if (consume("AT")) {
expect(">");
Cmd->LMARegionName = next();
}
if (Cmd->LMAExpr && !Cmd->LMARegionName.empty())
error("section can't have both LMA and a load region");
Cmd->Phdrs = readOutputSectionPhdrs();
if (consume("="))
@ -922,7 +930,10 @@ ByteCommand *ScriptParser::readByteCommand(StringRef Tok) {
StringRef ScriptParser::readParenLiteral() {
expect("(");
bool Orig = InExpr;
InExpr = false;
StringRef Tok = next();
InExpr = Orig;
expect(")");
return Tok;
}
@ -1282,8 +1293,8 @@ void ScriptParser::readMemory() {
// Add the memory region to the region map.
if (Script->MemoryRegions.count(Name))
setError("region '" + Name + "' already defined");
MemoryRegion *MR = make<MemoryRegion>();
*MR = {Name, Origin, Length, Flags, NegFlags};
MemoryRegion *MR =
make<MemoryRegion>(Name, Origin, Length, Flags, NegFlags);
Script->MemoryRegions[Name] = MR;
}
}

3
deps/lld/ELF/SymbolTable.cpp vendored
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@ -491,12 +491,13 @@ void SymbolTable::addShared(StringRef Name, SharedFile<ELFT> &File,
if (WasInserted || ((S->isUndefined() || S->isLazy()) &&
S->getVisibility() == STV_DEFAULT)) {
uint8_t Binding = S->Binding;
bool WasUndefined = S->isUndefined();
replaceSymbol<SharedSymbol>(S, File, Name, Sym.getBinding(), Sym.st_other,
Sym.getType(), Sym.st_value, Sym.st_size,
Alignment, VerdefIndex);
if (!WasInserted) {
S->Binding = Binding;
if (!S->isWeak() && !Config->GcSections)
if (!S->isWeak() && !Config->GcSections && WasUndefined)
File.IsNeeded = true;
}
}

6
deps/lld/ELF/Writer.cpp vendored
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@ -822,6 +822,8 @@ void PhdrEntry::add(OutputSection *Sec) {
p_align = std::max(p_align, Sec->Alignment);
if (p_type == PT_LOAD)
Sec->PtLoad = this;
if (Sec->LMAExpr)
ASectionHasLMA = true;
}
// 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() {
// different flags or is loaded at a discontiguous address using AT linker
// script command.
uint64_t NewFlags = computeFlags(Sec->getPhdrFlags());
if (Sec->LMAExpr || Flags != NewFlags) {
if ((Sec->LMAExpr && Load->ASectionHasLMA) ||
Sec->MemRegion != Load->FirstSec->MemRegion || Flags != NewFlags) {
Load = AddHdr(PT_LOAD, NewFlags);
Flags = NewFlags;
}

7
deps/lld/ELF/Writer.h vendored
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@ -44,6 +44,13 @@ struct PhdrEntry {
OutputSection *FirstSec = nullptr;
OutputSection *LastSec = nullptr;
bool HasLMA = false;
// True if one of the sections in this program header has a LMA specified via
// linker script: AT(addr). We never allow 2 or more sections with LMA in the
// same program header.
bool ASectionHasLMA = false;
uint64_t LMAOffset = 0;
};
void addReservedSymbols();

1
deps/lld/lib/ReaderWriter/MachO/ArchHandler_x86_64.cpp vendored
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@ -621,6 +621,7 @@ void ArchHandler_x86_64::applyFixupFinal(
// Fall into llvm_unreachable().
break;
}
llvm_unreachable("invalid x86_64 Reference Kind");
}
void ArchHandler_x86_64::applyFixupRelocatable(const Reference &ref,

3
deps/lld/test/ELF/Inputs/as-needed-lazy.s vendored Normal file
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@ -0,0 +1,3 @@
.global foo
foo:
nop

14
deps/lld/test/ELF/Inputs/mips-gp-dips-corrupt-ver.s vendored Normal file
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@ -0,0 +1,14 @@
# Source file for mips-gp-dips-corrupt-ver.so
#
# % cat gpdisp.ver
# LLD_1.0.0 { global: foo; };
#
# % as mips-gp-dips-corrupt-ver.s -o mips-gp-dips-corrupt-ver.o
# % ld -shared -o mips-gp-dips-corrupt-ver.so \
# --version-script gpdisp.ver mips-gp-dips-corrupt-ver.o
.global foo
.text
foo:
lui $t0, %hi(_gp_disp)
addi $t0, $t0, %lo(_gp_disp)

BIN
deps/lld/test/ELF/Inputs/mips-gp-dips-corrupt-ver.so vendored Executable file
View File

Binary file not shown.

14
deps/lld/test/ELF/as-needed-lazy.s vendored Normal file
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@ -0,0 +1,14 @@
# REQUIRES: x86
# RUN: llvm-mc -filetype=obj -triple=x86_64-pc-linux %s -o %t1.o
# RUN: llvm-mc -filetype=obj -triple=x86_64-pc-linux %p/Inputs/as-needed-lazy.s -o %t2.o
# RUN: ld.lld %t2.o -o %t2.so -shared
# RUN: rm -f %t2.a
# RUN: llvm-ar rc %t2.a %t2.o
# RUN: ld.lld %t1.o %t2.a --as-needed %t2.so -o %t
# RUN: llvm-readobj -d %t | FileCheck %s
# CHECK-NOT: NEEDED
.global _start
_start:
nop

65
deps/lld/test/ELF/i386-retpoline-nopic.s vendored Normal file
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@ -0,0 +1,65 @@
// REQUIRES: x86
// RUN: llvm-mc -filetype=obj -triple=i386-unknown-linux %s -o %t1.o
// RUN: llvm-mc -filetype=obj -triple=i386-unknown-linux %p/Inputs/shared.s -o %t2.o
// RUN: ld.lld -shared %t2.o -o %t2.so
// RUN: ld.lld %t1.o %t2.so -o %t.exe -z retpolineplt
// RUN: llvm-objdump -d -s %t.exe | FileCheck %s
// CHECK: Disassembly of section .plt:
// CHECK-NEXT: .plt:
// CHECK-NEXT: 11010: ff 35 04 20 01 00 pushl 73732
// CHECK-NEXT: 11016: 50 pushl %eax
// CHECK-NEXT: 11017: a1 08 20 01 00 movl 73736, %eax
// CHECK-NEXT: 1101c: e8 0f 00 00 00 calll 15 <.plt+0x20>
// CHECK-NEXT: 11021: f3 90 pause
// CHECK-NEXT: 11023: 0f ae e8 lfence
// CHECK-NEXT: 11026: eb f9 jmp -7 <.plt+0x11>
// CHECK-NEXT: 11028: cc int3
// CHECK-NEXT: 11029: cc int3
// CHECK-NEXT: 1102a: cc int3
// CHECK-NEXT: 1102b: cc int3
// CHECK-NEXT: 1102c: cc int3
// CHECK-NEXT: 1102d: cc int3
// CHECK-NEXT: 1102e: cc int3
// CHECK-NEXT: 1102f: cc int3
// CHECK-NEXT: 11030: 89 0c 24 movl %ecx, (%esp)
// CHECK-NEXT: 11033: 8b 4c 24 04 movl 4(%esp), %ecx
// CHECK-NEXT: 11037: 89 44 24 04 movl %eax, 4(%esp)
// CHECK-NEXT: 1103b: 89 c8 movl %ecx, %eax
// CHECK-NEXT: 1103d: 59 popl %ecx
// CHECK-NEXT: 1103e: c3 retl
// CHECK-NEXT: 1103f: cc int3
// CHECK-NEXT: 11040: 50 pushl %eax
// CHECK-NEXT: 11041: a1 0c 20 01 00 movl 73740, %eax
// CHECK-NEXT: 11046: e8 e5 ff ff ff calll -27 <.plt+0x20>
// CHECK-NEXT: 1104b: e9 d1 ff ff ff jmp -47 <.plt+0x11>
// CHECK-NEXT: 11050: 68 00 00 00 00 pushl $0
// CHECK-NEXT: 11055: e9 b6 ff ff ff jmp -74 <.plt>
// CHECK-NEXT: 1105a: cc int3
// CHECK-NEXT: 1105b: cc int3
// CHECK-NEXT: 1105c: cc int3
// CHECK-NEXT: 1105d: cc int3
// CHECK-NEXT: 1105e: cc int3
// CHECK-NEXT: 1105f: cc int3
// CHECK-NEXT: 11060: 50 pushl %eax
// CHECK-NEXT: 11061: a1 10 20 01 00 movl 73744, %eax
// CHECK-NEXT: 11066: e8 c5 ff ff ff calll -59 <.plt+0x20>
// CHECK-NEXT: 1106b: e9 b1 ff ff ff jmp -79 <.plt+0x11>
// CHECK-NEXT: 11070: 68 08 00 00 00 pushl $8
// CHECK-NEXT: 11075: e9 96 ff ff ff jmp -106 <.plt>
// CHECK-NEXT: 1107a: cc int3
// CHECK-NEXT: 1107b: cc int3
// CHECK-NEXT: 1107c: cc int3
// CHECK-NEXT: 1107d: cc int3
// CHECK-NEXT: 1107e: cc int3
// CHECK-NEXT: 1107f: cc int3
// CHECK: Contents of section .got.plt:
// CHECK-NEXT: 00300100 00000000 00000000 50100100
// CHECK-NEXT: 70100100
.global _start
_start:
jmp bar@PLT
jmp zed@PLT

62
deps/lld/test/ELF/i386-retpoline-pic.s vendored Normal file
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@ -0,0 +1,62 @@
// REQUIRES: x86
// RUN: llvm-mc -filetype=obj -triple=i386-unknown-linux -position-independent %s -o %t1.o
// RUN: llvm-mc -filetype=obj -triple=i386-unknown-linux -position-independent %p/Inputs/shared.s -o %t2.o
// RUN: ld.lld -shared %t2.o -o %t2.so
// RUN: ld.lld %t1.o %t2.so -o %t.exe -z retpolineplt -pie
// RUN: llvm-objdump -d -s %t.exe | FileCheck %s
// CHECK: Disassembly of section .plt:
// CHECK-NEXT: .plt:
// CHECK-NEXT: 1010: ff b3 04 20 00 00 pushl 8196(%ebx)
// CHECK-NEXT: 1016: 50 pushl %eax
// CHECK-NEXT: 1017: 8b 83 08 20 00 00 movl 8200(%ebx), %eax
// CHECK-NEXT: 101d: e8 0e 00 00 00 calll 14 <.plt+0x20>
// CHECK-NEXT: 1022: f3 90 pause
// CHECK-NEXT: 1024: 0f ae e8 lfence
// CHECK-NEXT: 1027: eb f9 jmp -7 <.plt+0x12>
// CHECK-NEXT: 1029: cc int3
// CHECK-NEXT: 102a: cc int3
// CHECK-NEXT: 102b: cc int3
// CHECK-NEXT: 102c: cc int3
// CHECK-NEXT: 102d: cc int3
// CHECK-NEXT: 102e: cc int3
// CHECK-NEXT: 102f: cc int3
// CHECK-NEXT: 1030: 89 0c 24 movl %ecx, (%esp)
// CHECK-NEXT: 1033: 8b 4c 24 04 movl 4(%esp), %ecx
// CHECK-NEXT: 1037: 89 44 24 04 movl %eax, 4(%esp)
// CHECK-NEXT: 103b: 89 c8 movl %ecx, %eax
// CHECK-NEXT: 103d: 59 popl %ecx
// CHECK-NEXT: 103e: c3 retl
// CHECK-NEXT: 103f: cc int3
// CHECK-NEXT: 1040: 50 pushl %eax
// CHECK-NEXT: 1041: 8b 83 0c 20 00 00 movl 8204(%ebx), %eax
// CHECK-NEXT: 1047: e8 e4 ff ff ff calll -28 <.plt+0x20>
// CHECK-NEXT: 104c: e9 d1 ff ff ff jmp -47 <.plt+0x12>
// CHECK-NEXT: 1051: 68 00 00 00 00 pushl $0
// CHECK-NEXT: 1056: e9 b5 ff ff ff jmp -75 <.plt>
// CHECK-NEXT: 105b: cc int3
// CHECK-NEXT: 105c: cc int3
// CHECK-NEXT: 105d: cc int3
// CHECK-NEXT: 105e: cc int3
// CHECK-NEXT: 105f: cc int3
// CHECK-NEXT: 1060: 50 pushl %eax
// CHECK-NEXT: 1061: 8b 83 10 20 00 00 movl 8208(%ebx), %eax
// CHECK-NEXT: 1067: e8 c4 ff ff ff calll -60 <.plt+0x20>
// CHECK-NEXT: 106c: e9 b1 ff ff ff jmp -79 <.plt+0x12>
// CHECK-NEXT: 1071: 68 08 00 00 00 pushl $8
// CHECK-NEXT: 1076: e9 95 ff ff ff jmp -107 <.plt>
// CHECK-NEXT: 107b: cc int3
// CHECK-NEXT: 107c: cc int3
// CHECK-NEXT: 107d: cc int3
// CHECK-NEXT: 107e: cc int3
// CHECK-NEXT: 107f: cc int3
// CHECK: Contents of section .got.plt:
// CHECK-NEXT: 2000 00300000 00000000 00000000 51100000
// CHECK-NEXT: 2010 71100000
.global _start
_start:
jmp bar@PLT
jmp zed@PLT

63
deps/lld/test/ELF/linkerscript/at-self-reference.s vendored Normal file
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@ -0,0 +1,63 @@
# REQUIRES: x86
# RUN: llvm-mc -filetype=obj -triple=x86_64-unknown-linux %s -o %t
# RUN: echo "SECTIONS { \
# RUN: . = 0x1000; \
# RUN: .aaa : AT(ADDR(.aaa)) { *(.aaa) } \
# RUN: .bbb : AT(ADDR(.bbb)) { *(.bbb) } \
# RUN: }" > %t.script
# RUN: ld.lld %t --script %t.script -o %t2
# RUN: llvm-readobj -program-headers %t2 | FileCheck %s
# CHECK: ProgramHeaders [
# CHECK-NEXT: ProgramHeader {
# CHECK-NEXT: Type: PT_LOAD (0x1)
# CHECK-NEXT: Offset: 0x1000
# CHECK-NEXT: VirtualAddress: 0x1000
# CHECK-NEXT: PhysicalAddress: 0x1000
# CHECK-NEXT: FileSize: 3
# CHECK-NEXT: MemSize: 3
# CHECK-NEXT: Flags [ (0x5)
# CHECK-NEXT: PF_R (0x4)
# CHECK-NEXT: PF_X (0x1)
# CHECK-NEXT: ]
# CHECK-NEXT: Alignment: 4096
# CHECK-NEXT: }
# CHECK-NEXT: ProgramHeader {
# CHECK-NEXT: Type: PT_LOAD (0x1)
# CHECK-NEXT: Offset: 0x1008
# CHECK-NEXT: VirtualAddress: 0x1008
# CHECK-NEXT: PhysicalAddress: 0x1008
# CHECK-NEXT: FileSize: 9
# CHECK-NEXT: MemSize: 9
# CHECK-NEXT: Flags [ (0x5)
# CHECK-NEXT: PF_R (0x4)
# CHECK-NEXT: PF_X (0x1)
# CHECK-NEXT: ]
# CHECK-NEXT: Alignment: 4096
# CHECK-NEXT: }
# CHECK-NEXT: ProgramHeader {
# CHECK-NEXT: Type: PT_GNU_STACK (0x6474E551)
# CHECK-NEXT: Offset: 0x0
# CHECK-NEXT: VirtualAddress: 0x0
# CHECK-NEXT: PhysicalAddress: 0x0
# CHECK-NEXT: FileSize: 0
# CHECK-NEXT: MemSize: 0
# CHECK-NEXT: Flags [ (0x6)
# CHECK-NEXT: PF_R (0x4)
# CHECK-NEXT: PF_W (0x2)
# CHECK-NEXT: ]
# CHECK-NEXT: Alignment: 0
# CHECK-NEXT: }
# CHECK-NEXT:]
.global _start
_start:
nop
.section .aaa, "a"
.asciz "aa"
.section .bbb, "a"
.align 8
.quad 0

81
deps/lld/test/ELF/linkerscript/at2.s vendored Normal file
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@ -0,0 +1,81 @@
# REQUIRES: x86
# RUN: llvm-mc -filetype=obj -triple=x86_64-unknown-linux %s -o %t
# RUN: echo "MEMORY { \
# RUN: AX (ax) : ORIGIN = 0x2000, LENGTH = 0x100 \
# RUN: AW (aw) : ORIGIN = 0x3000, LENGTH = 0x100 \
# RUN: FLASH (ax) : ORIGIN = 0x6000, LENGTH = 0x100 \
# RUN: RAM (aw) : ORIGIN = 0x7000, LENGTH = 0x100 } \
# RUN: SECTIONS { \
# RUN: .foo1 : { *(.foo1) } > AX AT>FLASH \
# RUN: .foo2 : { *(.foo2) } > AX \
# RUN: .bar1 : { *(.bar1) } > AW AT> RAM \
# RUN: .bar2 : { *(.bar2) } > AW AT > RAM \
# RUN: .bar3 : { *(.bar3) } > AW AT >RAM \
# RUN: }" > %t.script
# RUN: ld.lld %t --script %t.script -o %t2
# RUN: llvm-readobj -program-headers %t2 | FileCheck %s
# RUN: llvm-objdump -section-headers %t2 | FileCheck %s --check-prefix=SECTIONS
# CHECK: ProgramHeaders [
# CHECK-NEXT: ProgramHeader {
# CHECK-NEXT: Type: PT_LOAD
# CHECK-NEXT: Offset: 0x1000
# CHECK-NEXT: VirtualAddress: 0x2000
# CHECK-NEXT: PhysicalAddress: 0x6000
# CHECK-NEXT: FileSize: 16
# CHECK-NEXT: MemSize: 16
# CHECK-NEXT: Flags [
# CHECK-NEXT: PF_R
# CHECK-NEXT: PF_X
# CHECK-NEXT: ]
# CHECK-NEXT: Alignment:
# CHECK-NEXT: }
# CHECK-NEXT: ProgramHeader {
# CHECK-NEXT: Type: PT_LOAD
# CHECK-NEXT: Offset: 0x2000
# CHECK-NEXT: VirtualAddress: 0x3000
# CHECK-NEXT: PhysicalAddress: 0x7000
# CHECK-NEXT: FileSize: 24
# CHECK-NEXT: MemSize: 24
# CHECK-NEXT: Flags [
# CHECK-NEXT: PF_R
# CHECK-NEXT: PF_W
# CHECK-NEXT: ]
# CHECK-NEXT: Alignment: 4096
# CHECK-NEXT: }
# SECTIONS: Sections:
# SECTIONS-NEXT: Idx Name Size Address
# SECTIONS-NEXT: 0 00000000 0000000000000000
# SECTIONS-NEXT: 1 .foo1 00000008 0000000000002000
# SECTIONS-NEXT: 2 .foo2 00000008 0000000000002008
# SECTIONS-NEXT: 3 .text 00000000 0000000000002010
# SECTIONS-NEXT: 4 .bar1 00000008 0000000000003000
# SECTIONS-NEXT: 5 .bar2 00000008 0000000000003008
# SECTIONS-NEXT: 6 .bar3 00000008 0000000000003010
# RUN: llvm-mc -filetype=obj -triple=x86_64-unknown-linux %s -o %t
# RUN: echo "MEMORY { \
# RUN: FLASH (ax) : ORIGIN = 0x2000, LENGTH = 0x100 \
# RUN: RAM (aw) : ORIGIN = 0x5000, LENGTH = 0x100 } \
# RUN: SECTIONS { \
# RUN: .foo1 : AT(0x500) { *(.foo1) } > FLASH AT>FLASH \
# RUN: }" > %t2.script
# RUN: not ld.lld %t --script %t2.script -o %t2 2>&1 | \
# RUN: FileCheck %s --check-prefix=ERR
# ERR: error: section can't have both LMA and a load region
.section .foo1, "ax"
.quad 0
.section .foo2, "ax"
.quad 0
.section .bar1, "aw"
.quad 0
.section .bar2, "aw"
.quad 0
.section .bar3, "aw"
.quad 0

38
deps/lld/test/ELF/linkerscript/at3.s vendored Normal file
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@ -0,0 +1,38 @@
# REQUIRES: x86
# RUN: llvm-mc -filetype=obj -triple=x86_64-pc-linux %s -o %t.o
# RUN: echo "MEMORY { \
# RUN: FOO (ax) : ORIGIN = 0x1000, LENGTH = 0x100 \
# RUN: BAR (ax) : ORIGIN = 0x2000, LENGTH = 0x100 \
# RUN: ZED (ax) : ORIGIN = 0x3000, LENGTH = 0x100 \
# RUN: FLASH (ax) : ORIGIN = 0x6000, LENGTH = 0x200 \
# RUN: } \
# RUN: SECTIONS { \
# RUN: .foo1 : { *(.foo1) } > FOO AT>FLASH \
# RUN: .foo2 : { *(.foo2) BYTE(0x42) } > BAR AT>FLASH \
# RUN: .foo3 : { *(.foo3) } > ZED AT>FLASH \
# RUN: }" > %t.script
# RUN: ld.lld %t.o --script %t.script -o %t
# RUN: llvm-readelf -sections -program-headers %t | FileCheck %s
# CHECK: .foo1 PROGBITS 0000000000001000 001000
# CHECK: .foo2 PROGBITS 0000000000002000 002000
# CHECK: .foo3 PROGBITS 0000000000003000 003000
# CHECK: Program Headers:
# CHECK-NOT: LOAD
# CHECK: Type Offset VirtAddr PhysAddr
# CHECK-NEXT: LOAD 0x001000 0x0000000000001000 0x0000000000006000
# CHECK-NEXT: LOAD 0x002000 0x0000000000002000 0x0000000000006008
# CHECK-NEXT: LOAD 0x003000 0x0000000000003000 0x0000000000006011
# CHECK-NOT: LOAD
.section .foo1, "a"
.quad 0
.section .foo2, "ax"
.quad 0
.section .foo3, "ax"
.quad 0

21
deps/lld/test/ELF/linkerscript/merge-header-load.s vendored Normal file
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@ -0,0 +1,21 @@
# REQUIRES: x86
# RUN: llvm-mc -filetype=obj -triple=x86_64-pc-linux %s -o %t.o
# RUN: echo "SECTIONS { \
# RUN: . = 0xffffffff80000200; \
# RUN: .text : AT (0x4200) { *(.text) } \
# RUN: }" > %t.script
# RUN: ld.lld %t.o --script %t.script -o %t
# RUN: llvm-readelf -program-headers %t | FileCheck %s
# Test that we put the header in the first PT_LOAD. We used to create a PT_LOAD
# just for it and it would have a different virtual to physical address delta.
# CHECK: Program Headers:
# CHECK: Type Offset VirtAddr PhysAddr
# CHECK-NEXT: PHDR 0x000040 0xffffffff80000040 0x0000000000004040
# CHECK-NEXT: LOAD 0x000000 0xffffffff80000000 0x0000000000004000
# CHECK-NOT: LOAD
.global _start
_start:
nop

10
deps/lld/test/ELF/linkerscript/parse-section-in-addr.s vendored Normal file
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@ -0,0 +1,10 @@
# REQUIRES: x86
# RUN: llvm-mc -filetype=obj -triple=x86_64-pc-linux %s -o %t.o
# RUN: echo "SECTIONS { \
# RUN: .foo-bar : AT(ADDR(.foo-bar)) { *(.text) } \
# RUN: }" > %t.script
# RUN: ld.lld -o %t.so --script %t.script %t.o -shared
# RUN: llvm-readelf -S %t.so | FileCheck %s
# CHECK: .foo-bar

15
deps/lld/test/ELF/mips-gp-disp-ver.s vendored Normal file
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@ -0,0 +1,15 @@
# MIPS BFD linker puts _gp_disp symbol into DSO files and assigns zero
# version definition index to it. This value means 'unversioned local symbol'
# while _gp_disp is a section global symbol. We have to handle this bug
# in the LLD because BFD linker is used for building MIPS toolchain
# libraries. This test checks such handling.
# RUN: llvm-mc -filetype=obj -triple=mips-unknown-linux %s -o %t.o
# RUN: ld.lld %t.o %S/Inputs/mips-gp-dips-corrupt-ver.so
# REQUIRES: mips
.global __start
.text
__start:
lw $t0, %got(foo)($gp)

2
deps/lld/test/ELF/pie.s vendored
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@ -48,7 +48,7 @@
# CHECK: Type: PT_DYNAMIC
## Check -nopie
# RUN: ld.lld -nopie %t1.o -o %t2
# RUN: ld.lld -no-pie %t1.o -o %t2
# RUN: llvm-readobj -file-headers -r %t2 | FileCheck %s --check-prefix=NOPIE
# NOPIE-NOT: Type: SharedObject

53
deps/lld/test/ELF/x86-64-retpoline-znow.s vendored Normal file
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@ -0,0 +1,53 @@
// REQUIRES: x86
// RUN: llvm-mc -filetype=obj -triple=x86_64-unknown-linux %s -o %t1.o
// RUN: llvm-mc -filetype=obj -triple=x86_64-unknown-linux %p/Inputs/shared.s -o %t2.o
// RUN: ld.lld -shared %t2.o -o %t2.so
// RUN: ld.lld -shared %t1.o %t2.so -o %t.exe -z retpolineplt -z now
// RUN: llvm-objdump -d -s %t.exe | FileCheck %s
// CHECK: Disassembly of section .plt:
// CHECK-NEXT: .plt:
// CHECK-NEXT: 1010: e8 0b 00 00 00 callq 11 <.plt+0x10>
// CHECK-NEXT: 1015: f3 90 pause
// CHECK-NEXT: 1017: 0f ae e8 lfence
// CHECK-NEXT: 101a: eb f9 jmp -7 <.plt+0x5>
// CHECK-NEXT: 101c: cc int3
// CHECK-NEXT: 101d: cc int3
// CHECK-NEXT: 101e: cc int3
// CHECK-NEXT: 101f: cc int3
// CHECK-NEXT: 1020: 4c 89 1c 24 movq %r11, (%rsp)
// CHECK-NEXT: 1024: c3 retq
// CHECK-NEXT: 1025: cc int3
// CHECK-NEXT: 1026: cc int3
// CHECK-NEXT: 1027: cc int3
// CHECK-NEXT: 1028: cc int3
// CHECK-NEXT: 1029: cc int3
// CHECK-NEXT: 102a: cc int3
// CHECK-NEXT: 102b: cc int3
// CHECK-NEXT: 102c: cc int3
// CHECK-NEXT: 102d: cc int3
// CHECK-NEXT: 102e: cc int3
// CHECK-NEXT: 102f: cc int3
// CHECK-NEXT: 1030: 4c 8b 1d c1 10 00 00 movq 4289(%rip), %r11
// CHECK-NEXT: 1037: e9 d4 ff ff ff jmp -44 <.plt>
// CHECK-NEXT: 103c: cc int3
// CHECK-NEXT: 103d: cc int3
// CHECK-NEXT: 103e: cc int3
// CHECK-NEXT: 103f: cc int3
// CHECK-NEXT: 1040: 4c 8b 1d b9 10 00 00 movq 4281(%rip), %r11
// CHECK-NEXT: 1047: e9 c4 ff ff ff jmp -60 <.plt>
// CHECK-NEXT: 104c: cc int3
// CHECK-NEXT: 104d: cc int3
// CHECK-NEXT: 104e: cc int3
// CHECK-NEXT: 104f: cc int3
// CHECK: Contents of section .got.plt:
// CHECK-NEXT: 20e0 00200000 00000000 00000000 00000000
// CHECK-NEXT: 20f0 00000000 00000000 00000000 00000000
// CHECK-NEXT: 2100 00000000 00000000
.global _start
_start:
jmp bar@PLT
jmp zed@PLT

66
deps/lld/test/ELF/x86-64-retpoline.s vendored Normal file
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// REQUIRES: x86
// RUN: llvm-mc -filetype=obj -triple=x86_64-unknown-linux %s -o %t1.o
// RUN: llvm-mc -filetype=obj -triple=x86_64-unknown-linux %p/Inputs/shared.s -o %t2.o
// RUN: ld.lld -shared %t2.o -o %t2.so
// RUN: ld.lld -shared %t1.o %t2.so -o %t.exe -z retpolineplt
// RUN: llvm-objdump -d -s %t.exe | FileCheck %s
// CHECK: Disassembly of section .plt:
// CHECK-NEXT: .plt:
// CHECK-NEXT: 1010: ff 35 f2 0f 00 00 pushq 4082(%rip)
// CHECK-NEXT: 1016: 4c 8b 1d f3 0f 00 00 movq 4083(%rip), %r11
// CHECK-NEXT: 101d: e8 0e 00 00 00 callq 14 <.plt+0x20>
// CHECK-NEXT: 1022: f3 90 pause
// CHECK-NEXT: 1024: 0f ae e8 lfence
// CHECK-NEXT: 1027: eb f9 jmp -7 <.plt+0x12>
// CHECK-NEXT: 1029: cc int3
// CHECK-NEXT: 102a: cc int3
// CHECK-NEXT: 102b: cc int3
// CHECK-NEXT: 102c: cc int3
// CHECK-NEXT: 102d: cc int3
// CHECK-NEXT: 102e: cc int3
// CHECK-NEXT: 102f: cc int3
// CHECK-NEXT: 1030: 4c 89 1c 24 movq %r11, (%rsp)
// CHECK-NEXT: 1034: c3 retq
// CHECK-NEXT: 1035: cc int3
// CHECK-NEXT: 1036: cc int3
// CHECK-NEXT: 1037: cc int3
// CHECK-NEXT: 1038: cc int3
// CHECK-NEXT: 1039: cc int3
// CHECK-NEXT: 103a: cc int3
// CHECK-NEXT: 103b: cc int3
// CHECK-NEXT: 103c: cc int3
// CHECK-NEXT: 103d: cc int3
// CHECK-NEXT: 103e: cc int3
// CHECK-NEXT: 103f: cc int3
// CHECK-NEXT: 1040: 4c 8b 1d d1 0f 00 00 movq 4049(%rip), %r11
// CHECK-NEXT: 1047: e8 e4 ff ff ff callq -28 <.plt+0x20>
// CHECK-NEXT: 104c: e9 d1 ff ff ff jmp -47 <.plt+0x12>
// CHECK-NEXT: 1051: 68 00 00 00 00 pushq $0
// CHECK-NEXT: 1056: e9 b5 ff ff ff jmp -75 <.plt>
// CHECK-NEXT: 105b: cc int3
// CHECK-NEXT: 105c: cc int3
// CHECK-NEXT: 105d: cc int3
// CHECK-NEXT: 105e: cc int3
// CHECK-NEXT: 105f: cc int3
// CHECK-NEXT: 1060: 4c 8b 1d b9 0f 00 00 movq 4025(%rip), %r11
// CHECK-NEXT: 1067: e8 c4 ff ff ff callq -60 <.plt+0x20>
// CHECK-NEXT: 106c: e9 b1 ff ff ff jmp -79 <.plt+0x12>
// CHECK-NEXT: 1071: 68 01 00 00 00 pushq $1
// CHECK-NEXT: 1076: e9 95 ff ff ff jmp -107 <.plt>
// CHECK-NEXT: 107b: cc int3
// CHECK-NEXT: 107c: cc int3
// CHECK-NEXT: 107d: cc int3
// CHECK-NEXT: 107e: cc int3
// CHECK-NEXT: 107f: cc int3
// CHECK: Contents of section .got.plt:
// CHECK-NEXT: 2000 00300000 00000000 00000000 00000000
// CHECK-NEXT: 2010 00000000 00000000 51100000 00000000
// CHECK-NEXT: 2020 71100000 00000000
.global _start
_start:
jmp bar@PLT
jmp zed@PLT