Page MenuHomeFreeBSD
Differential D20337 Diff 57692 contrib/llvm/tools/lld/ELF/Arch/PPC64.cpp

Changeset View

Standalone View

View Options

contrib/llvm/tools/lld/ELF/Arch/PPC64.cpp

Show First 20 Lines • Show All 107 Lines • ▼ Show 20 Lines RelExpr getRelExpr(RelType Type, const Symbol &S,
const uint8_t *Loc) const override; const uint8_t *Loc) const override;
void writePltHeader(uint8_t *Buf) const override; void writePltHeader(uint8_t *Buf) const override;
void writePlt(uint8_t *Buf, uint64_t GotPltEntryAddr, uint64_t PltEntryAddr, void writePlt(uint8_t *Buf, uint64_t GotPltEntryAddr, uint64_t PltEntryAddr,
int32_t Index, unsigned RelOff) const override; int32_t Index, unsigned RelOff) const override;
void relocateOne(uint8_t *Loc, RelType Type, uint64_t Val) const override; void relocateOne(uint8_t *Loc, RelType Type, uint64_t Val) const override;
void writeGotHeader(uint8_t *Buf) const override; void writeGotHeader(uint8_t *Buf) const override;
bool needsThunk(RelExpr Expr, RelType Type, const InputFile *File, bool needsThunk(RelExpr Expr, RelType Type, const InputFile *File,
uint64_t BranchAddr, const Symbol &S) const override; uint64_t BranchAddr, const Symbol &S) const override;
uint32_t getThunkSectionSpacing() const override;
bool inBranchRange(RelType Type, uint64_t Src, uint64_t Dst) const override; bool inBranchRange(RelType Type, uint64_t Src, uint64_t Dst) const override;
RelExpr adjustRelaxExpr(RelType Type, const uint8_t *Data, RelExpr adjustRelaxExpr(RelType Type, const uint8_t *Data,
RelExpr Expr) const override; RelExpr Expr) const override;
void relaxTlsGdToIe(uint8_t *Loc, RelType Type, uint64_t Val) const override; void relaxTlsGdToIe(uint8_t *Loc, RelType Type, uint64_t Val) const override;
void relaxTlsGdToLe(uint8_t *Loc, RelType Type, uint64_t Val) const override; void relaxTlsGdToLe(uint8_t *Loc, RelType Type, uint64_t Val) const override;
void relaxTlsLdToLe(uint8_t *Loc, RelType Type, uint64_t Val) const override; void relaxTlsLdToLe(uint8_t *Loc, RelType Type, uint64_t Val) const override;
void relaxTlsIeToLe(uint8_t *Loc, RelType Type, uint64_t Val) const override; void relaxTlsIeToLe(uint8_t *Loc, RelType Type, uint64_t Val) const override;
▲ Show 20 Lines • Show All 628 Lines • ▼ Show 20 Linesbool PPC64::needsThunk(RelExpr Expr, RelType Type, const InputFile *File,
// If a symbol is a weak undefined and we are compiling an executable // If a symbol is a weak undefined and we are compiling an executable
// it doesn't need a range-extending thunk since it can't be called. // it doesn't need a range-extending thunk since it can't be called.
if (S.isUndefWeak() && !Config->Shared) if (S.isUndefWeak() && !Config->Shared)
return false; return false;
// If the offset exceeds the range of the branch type then it will need // If the offset exceeds the range of the branch type then it will need
// a range-extending thunk. // a range-extending thunk.
return !inBranchRange(Type, BranchAddr, S.getVA()); return !inBranchRange(Type, BranchAddr, S.getVA());
}
uint32_t PPC64::getThunkSectionSpacing() const {
// See comment in Arch/ARM.cpp for a more detailed explanation of
// getThunkSectionSpacing(). For PPC64 we pick the constant here based on
// R_PPC64_REL24, which is used by unconditional branch instructions.
// 0x2000000 = (1 << 24-1) * 4
return 0x2000000;
} }
bool PPC64::inBranchRange(RelType Type, uint64_t Src, uint64_t Dst) const { bool PPC64::inBranchRange(RelType Type, uint64_t Src, uint64_t Dst) const {
int64_t Offset = Dst - Src; int64_t Offset = Dst - Src;
if (Type == R_PPC64_REL14) if (Type == R_PPC64_REL14)
return isInt<16>(Offset); return isInt<16>(Offset);
if (Type == R_PPC64_REL24) if (Type == R_PPC64_REL24)
return isInt<26>(Offset); return isInt<26>(Offset);
▲ Show 20 Lines • Show All 164 Lines • Show Last 20 Lines