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Diffstat (limited to 'lld/lib/ReaderWriter/ELF/HexagonReference.cpp')
| -rw-r--r-- | lld/lib/ReaderWriter/ELF/HexagonReference.cpp | 170 |
1 files changed, 0 insertions, 170 deletions
diff --git a/lld/lib/ReaderWriter/ELF/HexagonReference.cpp b/lld/lib/ReaderWriter/ELF/HexagonReference.cpp deleted file mode 100644 index 286af00257d..00000000000 --- a/lld/lib/ReaderWriter/ELF/HexagonReference.cpp +++ /dev/null @@ -1,170 +0,0 @@ -//===- lib/ReaderWriter/ELF/HexagonReference.cpp ----------------------------===// -// -// The LLVM Linker -// -// This file is distributed under the University of Illinois Open Source -// License. See LICENSE.TXT for details. -// -//===----------------------------------------------------------------------===// - - -#include "ReferenceKinds.h" - -#include "llvm/ADT/StringRef.h" -#include "llvm/ADT/StringSwitch.h" -#include "llvm/Support/Endian.h" -#include "llvm/Support/ErrorHandling.h" -#include "llvm/Support/ELF.h" - -namespace lld { -namespace elf { - -//===----------------------------------------------------------------------===// -// HexagonKindHandler -// TODO: more to do here -//===----------------------------------------------------------------------===// - -HexagonKindHandler::~HexagonKindHandler() { -} - -/// \brief The following relocation routines are derived from the -/// Hexagon ABI specification, Section 11.6: Relocation -/// Symbols used: -/// A: Added used to compute the value, r_addend -/// P: Place address of the field being relocated, r_offset -/// S: Value of the symbol whose index resides in the relocation entry. - -namespace hexagon { -int relocNONE(uint8_t *location, uint64_t P, uint64_t S, uint64_t A) { - return HexagonKindHandler::NoError; -} - -/// \brief Word32_B22: 0x01ff3ffe : (S + A - P) >> 2 : Verify -int relocB22PCREL(uint8_t *location, uint64_t P, uint64_t S, uint64_t A) { - int32_t result = (uint32_t)(((S + A) - P)>>2); - if ((result < 0x200000) && (result > -0x200000)) { - result = ((result<<1) & 0x3ffe) | ((result<<3) & 0x01ff0000); - *reinterpret_cast<llvm::support::ulittle32_t *>(location) = result | - (uint32_t)*reinterpret_cast<llvm::support::ulittle32_t *>(location); - return HexagonKindHandler::NoError; - } - return HexagonKindHandler::Overflow; -} - -/// \brief Word32_B15: 0x00df20fe : (S + A - P) >> 2 : Verify -int relocB15PCREL(uint8_t *location, uint64_t P, uint64_t S, uint64_t A) { - int32_t result = (uint32_t)(((S + A) - P)>>2); - if ((result < 0x8000) && (result > -0x8000)) { - result = ((result<<1) & 0x20fe) | ((result<<7) & 0x00df0000); - *reinterpret_cast<llvm::support::ulittle32_t *>(location) = result | - (uint32_t)*reinterpret_cast<llvm::support::ulittle32_t *>(location); - return HexagonKindHandler::NoError; - } - return HexagonKindHandler::Overflow; -} - -/// \brief Word32_LO: 0x00c03fff : (S + A) : Truncate -int relocLO16(uint8_t *location, uint64_t P, uint64_t S, uint64_t A) { - uint32_t result = (uint32_t)(S + A); - result = ((result & 0x3fff) | ((result << 8) & 0x00c00000)); - *reinterpret_cast<llvm::support::ulittle32_t *>(location) = result | - (uint32_t)*reinterpret_cast<llvm::support::ulittle32_t *>(location); - return HexagonKindHandler::NoError; -} - -/// \brief Word32_LO: 0x00c03fff : (S + A) >> 16 : Truncate -int relocHI16(uint8_t *location, uint64_t P, uint64_t S, uint64_t A) { - uint32_t result = (uint32_t)((S + A)>>16); - result = ((result & 0x3fff) | ((result << 8) & 0x00c00000)); - *reinterpret_cast<llvm::support::ulittle32_t *>(location) = result | - (uint32_t)*reinterpret_cast<llvm::support::ulittle32_t *>(location); - return HexagonKindHandler::NoError; -} - -/// \brief Word32: 0xffffffff : (S + A) : Truncate -int reloc32(uint8_t *location, uint64_t P, uint64_t S, uint64_t A) { - uint32_t result = (uint32_t)(S + A); - *reinterpret_cast<llvm::support::ulittle32_t *>(location) = result | - (uint32_t)*reinterpret_cast<llvm::support::ulittle32_t *>(location); - return HexagonKindHandler::NoError; -} -} // namespace hexagon - -HexagonKindHandler::HexagonKindHandler(){ - _fixupHandler[llvm::ELF::R_HEX_B22_PCREL] = hexagon::relocB22PCREL; - _fixupHandler[llvm::ELF::R_HEX_B15_PCREL] = hexagon::relocB15PCREL; - _fixupHandler[llvm::ELF::R_HEX_LO16] = hexagon::relocLO16; - _fixupHandler[llvm::ELF::R_HEX_HI16] = hexagon::relocHI16; - _fixupHandler[llvm::ELF::R_HEX_32] = hexagon::reloc32; -} - -Reference::Kind HexagonKindHandler::stringToKind(StringRef str) { - return llvm::StringSwitch<Reference::Kind>(str) - .Case("none", none) - .Case("R_HEX_B22_PCREL", llvm::ELF::R_HEX_B22_PCREL) - .Case("R_HEX_B15_PCREL", llvm::ELF::R_HEX_B15_PCREL) - .Case("R_HEX_LO16", llvm::ELF::R_HEX_LO16) - .Case("R_HEX_HI16", llvm::ELF::R_HEX_HI16) - .Case("R_HEX_32", llvm::ELF::R_HEX_32) - .Default(invalid); -} - -StringRef HexagonKindHandler::kindToString(Reference::Kind kind) { - switch (static_cast<int32_t>(kind)) { - case llvm::ELF::R_HEX_B22_PCREL: - return "R_HEX_B22_PCREL"; - case llvm::ELF::R_HEX_B15_PCREL: - return "R_HEX_B15_PCREL"; - case llvm::ELF::R_HEX_LO16: - return "R_HEX_LO16"; - case llvm::ELF::R_HEX_HI16: - return "R_HEX_HI16"; - case llvm::ELF::R_HEX_32: - return "R_HEX_32"; - default: - return "none"; - } -} - -bool HexagonKindHandler::isCallSite(Kind kind) { - llvm_unreachable("Unimplemented: HexagonKindHandler::isCallSite"); - return false; -} - -bool HexagonKindHandler::isPointer(Kind kind) { - llvm_unreachable("Unimplemented: HexagonKindHandler::isPointer"); - return false; -} - -bool HexagonKindHandler::isLazyImmediate(Kind kind) { - llvm_unreachable("Unimplemented: HexagonKindHandler::isLazyImmediate"); - return false; -} - -bool HexagonKindHandler::isLazyTarget(Kind kind) { - llvm_unreachable("Unimplemented: HexagonKindHandler::isLazyTarget"); - return false; -} - -void HexagonKindHandler::applyFixup(int32_t reloc, uint64_t addend, - uint8_t *location, uint64_t fixupAddress, - uint64_t targetAddress) { - int error; - if (_fixupHandler[reloc]) - { - error = (_fixupHandler[reloc])(location, - fixupAddress, targetAddress, addend); - - switch ((RelocationError)error) { - case NoError: - return; - case Overflow: - llvm::report_fatal_error("applyFixup relocation overflow"); - return; - } - } -} - - -} // namespace elf -} // namespace lld |
