mirror of
https://github.com/opnsense/src.git
synced 2026-06-08 16:22:46 -04:00
Vendor import of lld release_60 branch r324090:
https://llvm.org/svn/llvm-project/lld/branches/release_60@324090
This commit is contained in:
Dimitry Andric
parent
a8506ab674
commit
168413e17e
8 changed files with 510 additions and 11 deletions
146
ELF/Arch/X86.cpp
146
ELF/Arch/X86.cpp
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@ -21,7 +21,7 @@ using namespace lld;
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using namespace lld::elf;
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namespace {
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class X86 final : public TargetInfo {
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class X86 : public TargetInfo {
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public:
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X86();
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RelExpr getRelExpr(RelType Type, const Symbol &S,
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@ -399,7 +399,145 @@ void X86::relaxTlsLdToLe(uint8_t *Loc, RelType Type, uint64_t Val) const {
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memcpy(Loc - 2, Inst, sizeof(Inst));
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}
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TargetInfo *elf::getX86TargetInfo() {
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static X86 Target;
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return &Target;
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namespace {
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class RetpolinePic : public X86 {
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public:
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RetpolinePic();
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void writeGotPlt(uint8_t *Buf, const Symbol &S) const override;
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void writePltHeader(uint8_t *Buf) const override;
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void writePlt(uint8_t *Buf, uint64_t GotPltEntryAddr, uint64_t PltEntryAddr,
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int32_t Index, unsigned RelOff) const override;
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};
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class RetpolineNoPic : public X86 {
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public:
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RetpolineNoPic();
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void writeGotPlt(uint8_t *Buf, const Symbol &S) const override;
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void writePltHeader(uint8_t *Buf) const override;
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void writePlt(uint8_t *Buf, uint64_t GotPltEntryAddr, uint64_t PltEntryAddr,
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int32_t Index, unsigned RelOff) const override;
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};
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} // namespace
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RetpolinePic::RetpolinePic() {
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PltHeaderSize = 48;
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PltEntrySize = 32;
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}
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void RetpolinePic::writeGotPlt(uint8_t *Buf, const Symbol &S) const {
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write32le(Buf, S.getPltVA() + 17);
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}
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void RetpolinePic::writePltHeader(uint8_t *Buf) const {
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const uint8_t Insn[] = {
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0xff, 0xb3, 0, 0, 0, 0, // 0: pushl GOTPLT+4(%ebx)
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0x50, // 6: pushl %eax
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0x8b, 0x83, 0, 0, 0, 0, // 7: mov GOTPLT+8(%ebx), %eax
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0xe8, 0x0e, 0x00, 0x00, 0x00, // d: call next
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0xf3, 0x90, // 12: loop: pause
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0x0f, 0xae, 0xe8, // 14: lfence
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0xeb, 0xf9, // 17: jmp loop
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0xcc, 0xcc, 0xcc, 0xcc, 0xcc, 0xcc, 0xcc, // 19: int3; .align 16
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0x89, 0x0c, 0x24, // 20: next: mov %ecx, (%esp)
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0x8b, 0x4c, 0x24, 0x04, // 23: mov 0x4(%esp), %ecx
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0x89, 0x44, 0x24, 0x04, // 27: mov %eax ,0x4(%esp)
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0x89, 0xc8, // 2b: mov %ecx, %eax
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0x59, // 2d: pop %ecx
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0xc3, // 2e: ret
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};
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memcpy(Buf, Insn, sizeof(Insn));
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uint32_t Ebx = InX::Got->getVA() + InX::Got->getSize();
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uint32_t GotPlt = InX::GotPlt->getVA() - Ebx;
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write32le(Buf + 2, GotPlt + 4);
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write32le(Buf + 9, GotPlt + 8);
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}
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void RetpolinePic::writePlt(uint8_t *Buf, uint64_t GotPltEntryAddr,
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uint64_t PltEntryAddr, int32_t Index,
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unsigned RelOff) const {
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const uint8_t Insn[] = {
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0x50, // pushl %eax
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0x8b, 0x83, 0, 0, 0, 0, // mov foo@GOT(%ebx), %eax
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0xe8, 0, 0, 0, 0, // call plt+0x20
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0xe9, 0, 0, 0, 0, // jmp plt+0x12
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0x68, 0, 0, 0, 0, // pushl $reloc_offset
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0xe9, 0, 0, 0, 0, // jmp plt+0
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};
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memcpy(Buf, Insn, sizeof(Insn));
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uint32_t Ebx = InX::Got->getVA() + InX::Got->getSize();
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write32le(Buf + 3, GotPltEntryAddr - Ebx);
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write32le(Buf + 8, -Index * PltEntrySize - PltHeaderSize - 12 + 32);
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write32le(Buf + 13, -Index * PltEntrySize - PltHeaderSize - 17 + 18);
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write32le(Buf + 18, RelOff);
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write32le(Buf + 23, -Index * PltEntrySize - PltHeaderSize - 27);
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}
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RetpolineNoPic::RetpolineNoPic() {
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PltHeaderSize = 48;
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PltEntrySize = 32;
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}
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void RetpolineNoPic::writeGotPlt(uint8_t *Buf, const Symbol &S) const {
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write32le(Buf, S.getPltVA() + 16);
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}
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void RetpolineNoPic::writePltHeader(uint8_t *Buf) const {
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const uint8_t PltData[] = {
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0xff, 0x35, 0, 0, 0, 0, // 0: pushl GOTPLT+4
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0x50, // 6: pushl %eax
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0xa1, 0, 0, 0, 0, // 7: mov GOTPLT+8, %eax
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0xe8, 0x0f, 0x00, 0x00, 0x00, // c: call next
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0xf3, 0x90, // 11: loop: pause
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0x0f, 0xae, 0xe8, // 13: lfence
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0xeb, 0xf9, // 16: jmp loop
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0xcc, 0xcc, 0xcc, 0xcc, 0xcc, // 18: int3
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0xcc, 0xcc, 0xcc, // 1f: int3; .align 16
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0x89, 0x0c, 0x24, // 20: next: mov %ecx, (%esp)
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0x8b, 0x4c, 0x24, 0x04, // 23: mov 0x4(%esp), %ecx
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0x89, 0x44, 0x24, 0x04, // 27: mov %eax ,0x4(%esp)
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0x89, 0xc8, // 2b: mov %ecx, %eax
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0x59, // 2d: pop %ecx
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0xc3, // 2e: ret
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};
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memcpy(Buf, PltData, sizeof(PltData));
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uint32_t GotPlt = InX::GotPlt->getVA();
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write32le(Buf + 2, GotPlt + 4);
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write32le(Buf + 8, GotPlt + 8);
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}
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void RetpolineNoPic::writePlt(uint8_t *Buf, uint64_t GotPltEntryAddr,
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uint64_t PltEntryAddr, int32_t Index,
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unsigned RelOff) const {
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const uint8_t Insn[] = {
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0x50, // 0: pushl %eax
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0xa1, 0, 0, 0, 0, // 1: mov foo_in_GOT, %eax
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0xe8, 0, 0, 0, 0, // 6: call plt+0x20
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0xe9, 0, 0, 0, 0, // b: jmp plt+0x11
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0x68, 0, 0, 0, 0, // 10: pushl $reloc_offset
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0xe9, 0, 0, 0, 0, // 15: jmp plt+0
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};
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memcpy(Buf, Insn, sizeof(Insn));
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write32le(Buf + 2, GotPltEntryAddr);
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write32le(Buf + 7, -Index * PltEntrySize - PltHeaderSize - 11 + 32);
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write32le(Buf + 12, -Index * PltEntrySize - PltHeaderSize - 16 + 17);
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write32le(Buf + 17, RelOff);
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write32le(Buf + 22, -Index * PltEntrySize - PltHeaderSize - 26);
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}
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TargetInfo *elf::getX86TargetInfo() {
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if (Config->ZRetpolineplt) {
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if (Config->Pic) {
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static RetpolinePic T;
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return &T;
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}
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static RetpolineNoPic T;
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return &T;
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}
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static X86 T;
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return &T;
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}
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@ -23,7 +23,7 @@ using namespace lld;
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using namespace lld::elf;
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namespace {
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template <class ELFT> class X86_64 final : public TargetInfo {
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template <class ELFT> class X86_64 : public TargetInfo {
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public:
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X86_64();
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RelExpr getRelExpr(RelType Type, const Symbol &S,
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@ -460,12 +460,125 @@ void X86_64<ELFT>::relaxGot(uint8_t *Loc, uint64_t Val) const {
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write32le(Loc - 1, Val + 1);
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}
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TargetInfo *elf::getX32TargetInfo() {
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static X86_64<ELF32LE> Target;
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return &Target;
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namespace {
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template <class ELFT> class Retpoline : public X86_64<ELFT> {
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public:
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Retpoline();
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void writeGotPlt(uint8_t *Buf, const Symbol &S) const override;
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void writePltHeader(uint8_t *Buf) const override;
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void writePlt(uint8_t *Buf, uint64_t GotPltEntryAddr, uint64_t PltEntryAddr,
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int32_t Index, unsigned RelOff) const override;
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};
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template <class ELFT> class RetpolineZNow : public X86_64<ELFT> {
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public:
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RetpolineZNow();
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void writeGotPlt(uint8_t *Buf, const Symbol &S) const override {}
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void writePltHeader(uint8_t *Buf) const override;
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void writePlt(uint8_t *Buf, uint64_t GotPltEntryAddr, uint64_t PltEntryAddr,
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int32_t Index, unsigned RelOff) const override;
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};
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} // namespace
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template <class ELFT> Retpoline<ELFT>::Retpoline() {
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TargetInfo::PltHeaderSize = 48;
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TargetInfo::PltEntrySize = 32;
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}
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TargetInfo *elf::getX86_64TargetInfo() {
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static X86_64<ELF64LE> Target;
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return &Target;
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template <class ELFT>
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void Retpoline<ELFT>::writeGotPlt(uint8_t *Buf, const Symbol &S) const {
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write32le(Buf, S.getPltVA() + 17);
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}
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template <class ELFT> void Retpoline<ELFT>::writePltHeader(uint8_t *Buf) const {
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const uint8_t Insn[] = {
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0xff, 0x35, 0, 0, 0, 0, // 0: pushq GOTPLT+8(%rip)
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0x4c, 0x8b, 0x1d, 0, 0, 0, 0, // 6: mov GOTPLT+16(%rip), %r11
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0xe8, 0x0e, 0x00, 0x00, 0x00, // d: callq next
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0xf3, 0x90, // 12: loop: pause
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0x0f, 0xae, 0xe8, // 14: lfence
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0xeb, 0xf9, // 17: jmp loop
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0xcc, 0xcc, 0xcc, 0xcc, 0xcc, 0xcc, 0xcc, // 19: int3; .align 16
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0x4c, 0x89, 0x1c, 0x24, // 20: next: mov %r11, (%rsp)
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0xc3, // 24: ret
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};
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memcpy(Buf, Insn, sizeof(Insn));
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uint64_t GotPlt = InX::GotPlt->getVA();
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uint64_t Plt = InX::Plt->getVA();
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write32le(Buf + 2, GotPlt - Plt - 6 + 8);
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write32le(Buf + 9, GotPlt - Plt - 13 + 16);
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}
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template <class ELFT>
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void Retpoline<ELFT>::writePlt(uint8_t *Buf, uint64_t GotPltEntryAddr,
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uint64_t PltEntryAddr, int32_t Index,
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unsigned RelOff) const {
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const uint8_t Insn[] = {
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0x4c, 0x8b, 0x1d, 0, 0, 0, 0, // 0: mov foo@GOTPLT(%rip), %r11
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0xe8, 0, 0, 0, 0, // 7: callq plt+0x20
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0xe9, 0, 0, 0, 0, // c: jmp plt+0x12
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0x68, 0, 0, 0, 0, // 11: pushq <relocation index>
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0xe9, 0, 0, 0, 0, // 16: jmp plt+0
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};
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memcpy(Buf, Insn, sizeof(Insn));
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uint64_t Off = TargetInfo::PltHeaderSize + TargetInfo::PltEntrySize * Index;
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write32le(Buf + 3, GotPltEntryAddr - PltEntryAddr - 7);
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write32le(Buf + 8, -Off - 12 + 32);
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write32le(Buf + 13, -Off - 17 + 18);
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write32le(Buf + 18, Index);
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write32le(Buf + 23, -Off - 27);
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}
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template <class ELFT> RetpolineZNow<ELFT>::RetpolineZNow() {
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TargetInfo::PltHeaderSize = 32;
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TargetInfo::PltEntrySize = 16;
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}
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template <class ELFT>
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void RetpolineZNow<ELFT>::writePltHeader(uint8_t *Buf) const {
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const uint8_t Insn[] = {
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0xe8, 0x0b, 0x00, 0x00, 0x00, // 0: call next
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0xf3, 0x90, // 5: loop: pause
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0x0f, 0xae, 0xe8, // 7: lfence
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0xeb, 0xf9, // a: jmp loop
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0xcc, 0xcc, 0xcc, 0xcc, // c: int3; .align 16
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0x4c, 0x89, 0x1c, 0x24, // 10: next: mov %r11, (%rsp)
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0xc3, // 14: ret
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};
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memcpy(Buf, Insn, sizeof(Insn));
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}
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template <class ELFT>
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void RetpolineZNow<ELFT>::writePlt(uint8_t *Buf, uint64_t GotPltEntryAddr,
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uint64_t PltEntryAddr, int32_t Index,
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unsigned RelOff) const {
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const uint8_t Insn[] = {
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0x4c, 0x8b, 0x1d, 0, 0, 0, 0, // mov foo@GOTPLT(%rip), %r11
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0xe9, 0, 0, 0, 0, // jmp plt+0
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};
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memcpy(Buf, Insn, sizeof(Insn));
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write32le(Buf + 3, GotPltEntryAddr - PltEntryAddr - 7);
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write32le(Buf + 8,
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-Index * TargetInfo::PltEntrySize - TargetInfo::PltHeaderSize - 12);
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}
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template <class ELFT> TargetInfo *getTargetInfo() {
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if (Config->ZRetpolineplt) {
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if (Config->ZNow) {
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static RetpolineZNow<ELFT> T;
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return &T;
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}
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static Retpoline<ELFT> T;
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return &T;
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}
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static X86_64<ELFT> T;
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return &T;
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}
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TargetInfo *elf::getX32TargetInfo() { return getTargetInfo<ELF32LE>(); }
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TargetInfo *elf::getX86_64TargetInfo() { return getTargetInfo<ELF64LE>(); }
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@ -159,6 +159,7 @@ struct Configuration {
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bool ZRelro;
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bool ZRodynamic;
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bool ZText;
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bool ZRetpolineplt;
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bool ExitEarly;
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bool ZWxneeded;
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DiscardPolicy Discard;
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@ -674,6 +674,7 @@ void LinkerDriver::readConfigs(opt::InputArgList &Args) {
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Config->ZNow = hasZOption(Args, "now");
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Config->ZOrigin = hasZOption(Args, "origin");
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Config->ZRelro = !hasZOption(Args, "norelro");
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Config->ZRetpolineplt = hasZOption(Args, "retpolineplt");
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Config->ZRodynamic = hasZOption(Args, "rodynamic");
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Config->ZStackSize = args::getZOptionValue(Args, OPT_z, "stack-size", 0);
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Config->ZText = !hasZOption(Args, "notext");
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65
test/ELF/i386-retpoline-nopic.s
Normal file
65
test/ELF/i386-retpoline-nopic.s
Normal file
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@ -0,0 +1,65 @@
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// REQUIRES: x86
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// RUN: llvm-mc -filetype=obj -triple=i386-unknown-linux %s -o %t1.o
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// RUN: llvm-mc -filetype=obj -triple=i386-unknown-linux %p/Inputs/shared.s -o %t2.o
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// RUN: ld.lld -shared %t2.o -o %t2.so
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// RUN: ld.lld %t1.o %t2.so -o %t.exe -z retpolineplt
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// RUN: llvm-objdump -d -s %t.exe | FileCheck %s
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// CHECK: Disassembly of section .plt:
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// CHECK-NEXT: .plt:
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// CHECK-NEXT: 11010: ff 35 04 20 01 00 pushl 73732
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// CHECK-NEXT: 11016: 50 pushl %eax
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// CHECK-NEXT: 11017: a1 08 20 01 00 movl 73736, %eax
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// CHECK-NEXT: 1101c: e8 0f 00 00 00 calll 15 <.plt+0x20>
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// CHECK-NEXT: 11021: f3 90 pause
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// CHECK-NEXT: 11023: 0f ae e8 lfence
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// CHECK-NEXT: 11026: eb f9 jmp -7 <.plt+0x11>
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// CHECK-NEXT: 11028: cc int3
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// CHECK-NEXT: 11029: cc int3
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// CHECK-NEXT: 1102a: cc int3
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// CHECK-NEXT: 1102b: cc int3
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// CHECK-NEXT: 1102c: cc int3
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// CHECK-NEXT: 1102d: cc int3
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// CHECK-NEXT: 1102e: cc int3
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// CHECK-NEXT: 1102f: cc int3
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// CHECK-NEXT: 11030: 89 0c 24 movl %ecx, (%esp)
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// CHECK-NEXT: 11033: 8b 4c 24 04 movl 4(%esp), %ecx
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// CHECK-NEXT: 11037: 89 44 24 04 movl %eax, 4(%esp)
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// CHECK-NEXT: 1103b: 89 c8 movl %ecx, %eax
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// CHECK-NEXT: 1103d: 59 popl %ecx
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// CHECK-NEXT: 1103e: c3 retl
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// CHECK-NEXT: 1103f: cc int3
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// CHECK-NEXT: 11040: 50 pushl %eax
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// CHECK-NEXT: 11041: a1 0c 20 01 00 movl 73740, %eax
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// CHECK-NEXT: 11046: e8 e5 ff ff ff calll -27 <.plt+0x20>
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// CHECK-NEXT: 1104b: e9 d1 ff ff ff jmp -47 <.plt+0x11>
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// CHECK-NEXT: 11050: 68 00 00 00 00 pushl $0
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// CHECK-NEXT: 11055: e9 b6 ff ff ff jmp -74 <.plt>
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// CHECK-NEXT: 1105a: cc int3
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// CHECK-NEXT: 1105b: cc int3
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// CHECK-NEXT: 1105c: cc int3
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// CHECK-NEXT: 1105d: cc int3
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// CHECK-NEXT: 1105e: cc int3
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// CHECK-NEXT: 1105f: cc int3
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// CHECK-NEXT: 11060: 50 pushl %eax
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// CHECK-NEXT: 11061: a1 10 20 01 00 movl 73744, %eax
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// 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
test/ELF/i386-retpoline-pic.s
Normal file
62
test/ELF/i386-retpoline-pic.s
Normal file
|
|
@ -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
|
||||
53
test/ELF/x86-64-retpoline-znow.s
Normal file
53
test/ELF/x86-64-retpoline-znow.s
Normal file
|
|
@ -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
test/ELF/x86-64-retpoline.s
Normal file
66
test/ELF/x86-64-retpoline.s
Normal file
|
|
@ -0,0 +1,66 @@
|
|||
// 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
|
||||
Loading…
Reference in a new issue