16f75755c9204b1d8817ae5a65a2f7e5af0ec3f70Stephen Hines//===- HexagonRelocator.cpp -----------------------------------------------===// 26f75755c9204b1d8817ae5a65a2f7e5af0ec3f70Stephen Hines// 36f75755c9204b1d8817ae5a65a2f7e5af0ec3f70Stephen Hines// The MCLinker Project 46f75755c9204b1d8817ae5a65a2f7e5af0ec3f70Stephen Hines// 56f75755c9204b1d8817ae5a65a2f7e5af0ec3f70Stephen Hines// This file is distributed under the University of Illinois Open Source 66f75755c9204b1d8817ae5a65a2f7e5af0ec3f70Stephen Hines// License. See LICENSE.TXT for details. 76f75755c9204b1d8817ae5a65a2f7e5af0ec3f70Stephen Hines// 86f75755c9204b1d8817ae5a65a2f7e5af0ec3f70Stephen Hines//===----------------------------------------------------------------------===// 987f34658dec9097d987d254a990ea7f311bfc95fStephen Hines#include "HexagonRelocator.h" 1087f34658dec9097d987d254a990ea7f311bfc95fStephen Hines#include "HexagonRelocationFunctions.h" 1187f34658dec9097d987d254a990ea7f311bfc95fStephen Hines#include "HexagonEncodings.h" 1237b74a387bb3993387029859c2d9d051c41c724eStephen Hines 1337b74a387bb3993387029859c2d9d051c41c724eStephen Hines#include "mcld/LD/ELFFileFormat.h" 1437b74a387bb3993387029859c2d9d051c41c724eStephen Hines#include "mcld/LD/LDSymbol.h" 1537b74a387bb3993387029859c2d9d051c41c724eStephen Hines#include "mcld/Support/MsgHandling.h" 1637b74a387bb3993387029859c2d9d051c41c724eStephen Hines 176f75755c9204b1d8817ae5a65a2f7e5af0ec3f70Stephen Hines#include <llvm/ADT/Twine.h> 186f75755c9204b1d8817ae5a65a2f7e5af0ec3f70Stephen Hines#include <llvm/Support/DataTypes.h> 196f75755c9204b1d8817ae5a65a2f7e5af0ec3f70Stephen Hines#include <llvm/Support/ELF.h> 206f75755c9204b1d8817ae5a65a2f7e5af0ec3f70Stephen Hines 2137b74a387bb3993387029859c2d9d051c41c724eStephen Hinesnamespace mcld { 226f75755c9204b1d8817ae5a65a2f7e5af0ec3f70Stephen Hines 236f75755c9204b1d8817ae5a65a2f7e5af0ec3f70Stephen Hines//===--------------------------------------------------------------------===// 2487f34658dec9097d987d254a990ea7f311bfc95fStephen Hines// Relocation Helper Functions 2587f34658dec9097d987d254a990ea7f311bfc95fStephen Hines//===--------------------------------------------------------------------===// 2687f34658dec9097d987d254a990ea7f311bfc95fStephen Hines/// helper_DynRel - Get an relocation entry in .rela.dyn 2737b74a387bb3993387029859c2d9d051c41c724eStephen Hinesstatic Relocation& helper_DynRel_init(ResolveInfo* pSym, 2837b74a387bb3993387029859c2d9d051c41c724eStephen Hines Fragment& pFrag, 2987f34658dec9097d987d254a990ea7f311bfc95fStephen Hines uint64_t pOffset, 30551ae4ebd3e9d137ea668fb83ae4a55b8cfba451Stephen Hines Relocator::Type pType, 3137b74a387bb3993387029859c2d9d051c41c724eStephen Hines HexagonRelocator& pParent) { 3237b74a387bb3993387029859c2d9d051c41c724eStephen Hines HexagonLDBackend& ld_backend = pParent.getTarget(); 3337b74a387bb3993387029859c2d9d051c41c724eStephen Hines Relocation& rela_entry = *ld_backend.getRelaDyn().create(); 3487f34658dec9097d987d254a990ea7f311bfc95fStephen Hines rela_entry.setType(pType); 3587f34658dec9097d987d254a990ea7f311bfc95fStephen Hines rela_entry.targetRef().assign(pFrag, pOffset); 3637b74a387bb3993387029859c2d9d051c41c724eStephen Hines if (pType == llvm::ELF::R_HEX_RELATIVE || pSym == NULL) 3787f34658dec9097d987d254a990ea7f311bfc95fStephen Hines rela_entry.setSymInfo(0); 3887f34658dec9097d987d254a990ea7f311bfc95fStephen Hines else 3987f34658dec9097d987d254a990ea7f311bfc95fStephen Hines rela_entry.setSymInfo(pSym); 4087f34658dec9097d987d254a990ea7f311bfc95fStephen Hines 4187f34658dec9097d987d254a990ea7f311bfc95fStephen Hines return rela_entry; 4287f34658dec9097d987d254a990ea7f311bfc95fStephen Hines} 4387f34658dec9097d987d254a990ea7f311bfc95fStephen Hines 4487f34658dec9097d987d254a990ea7f311bfc95fStephen Hines/// helper_use_relative_reloc - Check if symbol can use relocation 4587f34658dec9097d987d254a990ea7f311bfc95fStephen Hines/// R_HEX_RELATIVE 4637b74a387bb3993387029859c2d9d051c41c724eStephen Hinesstatic bool helper_use_relative_reloc(const ResolveInfo& pSym, 4737b74a387bb3993387029859c2d9d051c41c724eStephen Hines const HexagonRelocator& pFactory) { 4887f34658dec9097d987d254a990ea7f311bfc95fStephen Hines // if symbol is dynamic or undefine or preemptible 4987f34658dec9097d987d254a990ea7f311bfc95fStephen Hines if (pSym.isDyn() || pSym.isUndef() || 5087f34658dec9097d987d254a990ea7f311bfc95fStephen Hines pFactory.getTarget().isSymbolPreemptible(pSym)) 5187f34658dec9097d987d254a990ea7f311bfc95fStephen Hines return false; 5287f34658dec9097d987d254a990ea7f311bfc95fStephen Hines return true; 5387f34658dec9097d987d254a990ea7f311bfc95fStephen Hines} 5487f34658dec9097d987d254a990ea7f311bfc95fStephen Hines 5537b74a387bb3993387029859c2d9d051c41c724eStephen Hinesstatic HexagonGOTEntry& helper_GOT_init(Relocation& pReloc, 5687f34658dec9097d987d254a990ea7f311bfc95fStephen Hines bool pHasRel, 5737b74a387bb3993387029859c2d9d051c41c724eStephen Hines HexagonRelocator& pParent) { 5887f34658dec9097d987d254a990ea7f311bfc95fStephen Hines // rsym - The relocation target symbol 5937b74a387bb3993387029859c2d9d051c41c724eStephen Hines ResolveInfo* rsym = pReloc.symInfo(); 6037b74a387bb3993387029859c2d9d051c41c724eStephen Hines HexagonLDBackend& ld_backend = pParent.getTarget(); 6137b74a387bb3993387029859c2d9d051c41c724eStephen Hines assert(pParent.getSymGOTMap().lookUp(*rsym) == NULL); 6287f34658dec9097d987d254a990ea7f311bfc95fStephen Hines 6337b74a387bb3993387029859c2d9d051c41c724eStephen Hines HexagonGOTEntry* got_entry = ld_backend.getGOT().create(); 6487f34658dec9097d987d254a990ea7f311bfc95fStephen Hines pParent.getSymGOTMap().record(*rsym, *got_entry); 6587f34658dec9097d987d254a990ea7f311bfc95fStephen Hines 6687f34658dec9097d987d254a990ea7f311bfc95fStephen Hines if (!pHasRel) { 6787f34658dec9097d987d254a990ea7f311bfc95fStephen Hines // No corresponding dynamic relocation, initialize to the symbol value. 6887f34658dec9097d987d254a990ea7f311bfc95fStephen Hines got_entry->setValue(HexagonRelocator::SymVal); 6937b74a387bb3993387029859c2d9d051c41c724eStephen Hines } else { 7087f34658dec9097d987d254a990ea7f311bfc95fStephen Hines // Initialize got_entry content and the corresponding dynamic relocation. 7187f34658dec9097d987d254a990ea7f311bfc95fStephen Hines if (helper_use_relative_reloc(*rsym, pParent)) { 7237b74a387bb3993387029859c2d9d051c41c724eStephen Hines helper_DynRel_init( 7337b74a387bb3993387029859c2d9d051c41c724eStephen Hines rsym, *got_entry, 0x0, llvm::ELF::R_HEX_RELATIVE, pParent); 7487f34658dec9097d987d254a990ea7f311bfc95fStephen Hines got_entry->setValue(HexagonRelocator::SymVal); 7537b74a387bb3993387029859c2d9d051c41c724eStephen Hines } else { 7637b74a387bb3993387029859c2d9d051c41c724eStephen Hines helper_DynRel_init( 7737b74a387bb3993387029859c2d9d051c41c724eStephen Hines rsym, *got_entry, 0x0, llvm::ELF::R_HEX_GLOB_DAT, pParent); 7887f34658dec9097d987d254a990ea7f311bfc95fStephen Hines got_entry->setValue(0); 7987f34658dec9097d987d254a990ea7f311bfc95fStephen Hines } 8087f34658dec9097d987d254a990ea7f311bfc95fStephen Hines } 8187f34658dec9097d987d254a990ea7f311bfc95fStephen Hines return *got_entry; 8287f34658dec9097d987d254a990ea7f311bfc95fStephen Hines} 8387f34658dec9097d987d254a990ea7f311bfc95fStephen Hines 8437b74a387bb3993387029859c2d9d051c41c724eStephen Hinesstatic Relocator::Address helper_get_GOT_address(ResolveInfo& pSym, 8537b74a387bb3993387029859c2d9d051c41c724eStephen Hines HexagonRelocator& pParent) { 8637b74a387bb3993387029859c2d9d051c41c724eStephen Hines HexagonGOTEntry* got_entry = pParent.getSymGOTMap().lookUp(pSym); 8737b74a387bb3993387029859c2d9d051c41c724eStephen Hines assert(got_entry != NULL); 8887f34658dec9097d987d254a990ea7f311bfc95fStephen Hines return pParent.getTarget().getGOT().addr() + got_entry->getOffset(); 8987f34658dec9097d987d254a990ea7f311bfc95fStephen Hines} 9087f34658dec9097d987d254a990ea7f311bfc95fStephen Hines 9137b74a387bb3993387029859c2d9d051c41c724eStephen Hinesstatic PLTEntryBase& helper_PLT_init(Relocation& pReloc, 9237b74a387bb3993387029859c2d9d051c41c724eStephen Hines HexagonRelocator& pParent) { 9387f34658dec9097d987d254a990ea7f311bfc95fStephen Hines // rsym - The relocation target symbol 9437b74a387bb3993387029859c2d9d051c41c724eStephen Hines ResolveInfo* rsym = pReloc.symInfo(); 9537b74a387bb3993387029859c2d9d051c41c724eStephen Hines HexagonLDBackend& ld_backend = pParent.getTarget(); 9637b74a387bb3993387029859c2d9d051c41c724eStephen Hines assert(pParent.getSymPLTMap().lookUp(*rsym) == NULL); 9787f34658dec9097d987d254a990ea7f311bfc95fStephen Hines 9837b74a387bb3993387029859c2d9d051c41c724eStephen Hines PLTEntryBase* plt_entry = ld_backend.getPLT().create(); 9987f34658dec9097d987d254a990ea7f311bfc95fStephen Hines pParent.getSymPLTMap().record(*rsym, *plt_entry); 10087f34658dec9097d987d254a990ea7f311bfc95fStephen Hines 10137b74a387bb3993387029859c2d9d051c41c724eStephen Hines assert(pParent.getSymGOTPLTMap().lookUp(*rsym) == NULL && 10287f34658dec9097d987d254a990ea7f311bfc95fStephen Hines "PLT entry not exist, but DynRel entry exist!"); 10337b74a387bb3993387029859c2d9d051c41c724eStephen Hines HexagonGOTEntry* gotplt_entry = ld_backend.getGOTPLT().create(); 10487f34658dec9097d987d254a990ea7f311bfc95fStephen Hines pParent.getSymGOTPLTMap().record(*rsym, *gotplt_entry); 10587f34658dec9097d987d254a990ea7f311bfc95fStephen Hines // init the corresponding rel entry in .rela.plt 10637b74a387bb3993387029859c2d9d051c41c724eStephen Hines Relocation& rela_entry = *ld_backend.getRelaPLT().create(); 10787f34658dec9097d987d254a990ea7f311bfc95fStephen Hines rela_entry.setType(llvm::ELF::R_HEX_JMP_SLOT); 10887f34658dec9097d987d254a990ea7f311bfc95fStephen Hines rela_entry.targetRef().assign(*gotplt_entry); 10987f34658dec9097d987d254a990ea7f311bfc95fStephen Hines rela_entry.setSymInfo(rsym); 11087f34658dec9097d987d254a990ea7f311bfc95fStephen Hines 11187f34658dec9097d987d254a990ea7f311bfc95fStephen Hines return *plt_entry; 11287f34658dec9097d987d254a990ea7f311bfc95fStephen Hines} 11387f34658dec9097d987d254a990ea7f311bfc95fStephen Hines 114551ae4ebd3e9d137ea668fb83ae4a55b8cfba451Stephen Hinesstatic Relocator::Address helper_get_PLT_address(ResolveInfo& pSym, 11537b74a387bb3993387029859c2d9d051c41c724eStephen Hines HexagonRelocator& pParent) { 11637b74a387bb3993387029859c2d9d051c41c724eStephen Hines PLTEntryBase* plt_entry = pParent.getSymPLTMap().lookUp(pSym); 11737b74a387bb3993387029859c2d9d051c41c724eStephen Hines assert(plt_entry != NULL); 11887f34658dec9097d987d254a990ea7f311bfc95fStephen Hines return pParent.getTarget().getPLT().addr() + plt_entry->getOffset(); 11987f34658dec9097d987d254a990ea7f311bfc95fStephen Hines} 12087f34658dec9097d987d254a990ea7f311bfc95fStephen Hines 12187f34658dec9097d987d254a990ea7f311bfc95fStephen Hines//===--------------------------------------------------------------------===// 1226f75755c9204b1d8817ae5a65a2f7e5af0ec3f70Stephen Hines// Relocation Functions and Tables 1236f75755c9204b1d8817ae5a65a2f7e5af0ec3f70Stephen Hines//===--------------------------------------------------------------------===// 1246f75755c9204b1d8817ae5a65a2f7e5af0ec3f70Stephen HinesDECL_HEXAGON_APPLY_RELOC_FUNCS 1256f75755c9204b1d8817ae5a65a2f7e5af0ec3f70Stephen Hines 126551ae4ebd3e9d137ea668fb83ae4a55b8cfba451Stephen Hines/// the prototype of applying function 12737b74a387bb3993387029859c2d9d051c41c724eStephen Hinestypedef Relocator::Result (*ApplyFunctionType)(Relocation& pReloc, 12837b74a387bb3993387029859c2d9d051c41c724eStephen Hines HexagonRelocator& pParent); 1296f75755c9204b1d8817ae5a65a2f7e5af0ec3f70Stephen Hines 1306f75755c9204b1d8817ae5a65a2f7e5af0ec3f70Stephen Hines// the table entry of applying functions 13187f34658dec9097d987d254a990ea7f311bfc95fStephen Hinesstruct ApplyFunctionTriple { 1326f75755c9204b1d8817ae5a65a2f7e5af0ec3f70Stephen Hines ApplyFunctionType func; 1336f75755c9204b1d8817ae5a65a2f7e5af0ec3f70Stephen Hines unsigned int type; 13437b74a387bb3993387029859c2d9d051c41c724eStephen Hines const char* name; 1356f75755c9204b1d8817ae5a65a2f7e5af0ec3f70Stephen Hines}; 1366f75755c9204b1d8817ae5a65a2f7e5af0ec3f70Stephen Hines 1376f75755c9204b1d8817ae5a65a2f7e5af0ec3f70Stephen Hines// declare the table of applying functions 1386f75755c9204b1d8817ae5a65a2f7e5af0ec3f70Stephen Hinesstatic const ApplyFunctionTriple ApplyFunctions[] = { 13937b74a387bb3993387029859c2d9d051c41c724eStephen Hines DECL_HEXAGON_APPLY_RELOC_FUNC_PTRS}; 1406f75755c9204b1d8817ae5a65a2f7e5af0ec3f70Stephen Hines 14137b74a387bb3993387029859c2d9d051c41c724eStephen Hinesstatic uint32_t findBitMask(uint32_t insn, 14237b74a387bb3993387029859c2d9d051c41c724eStephen Hines Instruction* encodings, 14387f34658dec9097d987d254a990ea7f311bfc95fStephen Hines int32_t numInsns) { 14437b74a387bb3993387029859c2d9d051c41c724eStephen Hines for (int32_t i = 0; i < numInsns; ++i) { 145f7ac0f19a1c8d0ad14bcf6456ce368b830fea886Stephen Hines if (((insn & 0xc000) == 0) && !(encodings[i].isDuplex)) 146f7ac0f19a1c8d0ad14bcf6456ce368b830fea886Stephen Hines continue; 147f7ac0f19a1c8d0ad14bcf6456ce368b830fea886Stephen Hines 148f7ac0f19a1c8d0ad14bcf6456ce368b830fea886Stephen Hines if (((insn & 0xc000) != 0) && (encodings[i].isDuplex)) 149f7ac0f19a1c8d0ad14bcf6456ce368b830fea886Stephen Hines continue; 150f7ac0f19a1c8d0ad14bcf6456ce368b830fea886Stephen Hines 151f7ac0f19a1c8d0ad14bcf6456ce368b830fea886Stephen Hines if (((encodings[i].insnMask) & insn) == encodings[i].insnCmpMask) 152f7ac0f19a1c8d0ad14bcf6456ce368b830fea886Stephen Hines return encodings[i].insnBitMask; 153f7ac0f19a1c8d0ad14bcf6456ce368b830fea886Stephen Hines } 154f7ac0f19a1c8d0ad14bcf6456ce368b830fea886Stephen Hines assert(0); 15587f34658dec9097d987d254a990ea7f311bfc95fStephen Hines // Should not be here, but add a return for -Werror=return-type 15687f34658dec9097d987d254a990ea7f311bfc95fStephen Hines // error: control reaches end of non-void function 15787f34658dec9097d987d254a990ea7f311bfc95fStephen Hines return -1; 158f7ac0f19a1c8d0ad14bcf6456ce368b830fea886Stephen Hines} 159f7ac0f19a1c8d0ad14bcf6456ce368b830fea886Stephen Hines 16037b74a387bb3993387029859c2d9d051c41c724eStephen Hines#define FINDBITMASK(INSN) \ 16137b74a387bb3993387029859c2d9d051c41c724eStephen Hines findBitMask((uint32_t)INSN, \ 16237b74a387bb3993387029859c2d9d051c41c724eStephen Hines insn_encodings, \ 163f7ac0f19a1c8d0ad14bcf6456ce368b830fea886Stephen Hines sizeof(insn_encodings) / sizeof(Instruction)) 164f7ac0f19a1c8d0ad14bcf6456ce368b830fea886Stephen Hines 1656f75755c9204b1d8817ae5a65a2f7e5af0ec3f70Stephen Hines//===--------------------------------------------------------------------===// 1666f75755c9204b1d8817ae5a65a2f7e5af0ec3f70Stephen Hines// HexagonRelocator 1676f75755c9204b1d8817ae5a65a2f7e5af0ec3f70Stephen Hines//===--------------------------------------------------------------------===// 16837b74a387bb3993387029859c2d9d051c41c724eStephen HinesHexagonRelocator::HexagonRelocator(HexagonLDBackend& pParent, 16937b74a387bb3993387029859c2d9d051c41c724eStephen Hines const LinkerConfig& pConfig) 17037b74a387bb3993387029859c2d9d051c41c724eStephen Hines : Relocator(pConfig), m_Target(pParent) { 17137b74a387bb3993387029859c2d9d051c41c724eStephen Hines} 1726f75755c9204b1d8817ae5a65a2f7e5af0ec3f70Stephen Hines 17337b74a387bb3993387029859c2d9d051c41c724eStephen HinesHexagonRelocator::~HexagonRelocator() { 17437b74a387bb3993387029859c2d9d051c41c724eStephen Hines} 1756f75755c9204b1d8817ae5a65a2f7e5af0ec3f70Stephen Hines 17637b74a387bb3993387029859c2d9d051c41c724eStephen HinesRelocator::Result HexagonRelocator::applyRelocation(Relocation& pRelocation) { 1776f75755c9204b1d8817ae5a65a2f7e5af0ec3f70Stephen Hines Relocation::Type type = pRelocation.type(); 1786f75755c9204b1d8817ae5a65a2f7e5af0ec3f70Stephen Hines 17937b74a387bb3993387029859c2d9d051c41c724eStephen Hines if (type > 85) { // 86-255 relocs do not exists for Hexagon 1806f75755c9204b1d8817ae5a65a2f7e5af0ec3f70Stephen Hines return Relocator::Unknown; 1816f75755c9204b1d8817ae5a65a2f7e5af0ec3f70Stephen Hines } 1826f75755c9204b1d8817ae5a65a2f7e5af0ec3f70Stephen Hines 1836f75755c9204b1d8817ae5a65a2f7e5af0ec3f70Stephen Hines // apply the relocation 1846f75755c9204b1d8817ae5a65a2f7e5af0ec3f70Stephen Hines return ApplyFunctions[type].func(pRelocation, *this); 1856f75755c9204b1d8817ae5a65a2f7e5af0ec3f70Stephen Hines} 1866f75755c9204b1d8817ae5a65a2f7e5af0ec3f70Stephen Hines 18737b74a387bb3993387029859c2d9d051c41c724eStephen Hinesconst char* HexagonRelocator::getName(Relocation::Type pType) const { 1886f75755c9204b1d8817ae5a65a2f7e5af0ec3f70Stephen Hines return ApplyFunctions[pType].name; 1896f75755c9204b1d8817ae5a65a2f7e5af0ec3f70Stephen Hines} 1906f75755c9204b1d8817ae5a65a2f7e5af0ec3f70Stephen Hines 19187f34658dec9097d987d254a990ea7f311bfc95fStephen HinesRelocator::Size HexagonRelocator::getSize(Relocation::Type pType) const { 1926f75755c9204b1d8817ae5a65a2f7e5af0ec3f70Stephen Hines return 32; 1936f75755c9204b1d8817ae5a65a2f7e5af0ec3f70Stephen Hines} 194f7ac0f19a1c8d0ad14bcf6456ce368b830fea886Stephen Hines 19537b74a387bb3993387029859c2d9d051c41c724eStephen Hinesvoid HexagonRelocator::scanRelocation(Relocation& pReloc, 19637b74a387bb3993387029859c2d9d051c41c724eStephen Hines IRBuilder& pLinker, 19737b74a387bb3993387029859c2d9d051c41c724eStephen Hines Module& pModule, 19837b74a387bb3993387029859c2d9d051c41c724eStephen Hines LDSection& pSection, 19937b74a387bb3993387029859c2d9d051c41c724eStephen Hines Input& pInput) { 200f7ac0f19a1c8d0ad14bcf6456ce368b830fea886Stephen Hines if (LinkerConfig::Object == config().codeGenType()) 201f7ac0f19a1c8d0ad14bcf6456ce368b830fea886Stephen Hines return; 202f7ac0f19a1c8d0ad14bcf6456ce368b830fea886Stephen Hines 203f7ac0f19a1c8d0ad14bcf6456ce368b830fea886Stephen Hines // rsym - The relocation target symbol 20437b74a387bb3993387029859c2d9d051c41c724eStephen Hines ResolveInfo* rsym = pReloc.symInfo(); 20537b74a387bb3993387029859c2d9d051c41c724eStephen Hines assert(rsym != NULL && 206f7ac0f19a1c8d0ad14bcf6456ce368b830fea886Stephen Hines "ResolveInfo of relocation not set while scanRelocation"); 207f7ac0f19a1c8d0ad14bcf6456ce368b830fea886Stephen Hines 20887f34658dec9097d987d254a990ea7f311bfc95fStephen Hines if (config().isCodeStatic()) 20987f34658dec9097d987d254a990ea7f311bfc95fStephen Hines return; 21087f34658dec9097d987d254a990ea7f311bfc95fStephen Hines 21137b74a387bb3993387029859c2d9d051c41c724eStephen Hines assert(pSection.getLink() != NULL); 21237b74a387bb3993387029859c2d9d051c41c724eStephen Hines if ((pSection.getLink()->flag() & llvm::ELF::SHF_ALLOC) == 0) 213f7ac0f19a1c8d0ad14bcf6456ce368b830fea886Stephen Hines return; 214f7ac0f19a1c8d0ad14bcf6456ce368b830fea886Stephen Hines 21537b74a387bb3993387029859c2d9d051c41c724eStephen Hines if (rsym->isLocal()) // rsym is local 216f7ac0f19a1c8d0ad14bcf6456ce368b830fea886Stephen Hines scanLocalReloc(pReloc, pLinker, pModule, pSection); 21737b74a387bb3993387029859c2d9d051c41c724eStephen Hines else // rsym is external 218f7ac0f19a1c8d0ad14bcf6456ce368b830fea886Stephen Hines scanGlobalReloc(pReloc, pLinker, pModule, pSection); 219f7ac0f19a1c8d0ad14bcf6456ce368b830fea886Stephen Hines 220f7ac0f19a1c8d0ad14bcf6456ce368b830fea886Stephen Hines // check if we should issue undefined reference for the relocation target 221f7ac0f19a1c8d0ad14bcf6456ce368b830fea886Stephen Hines // symbol 222f7ac0f19a1c8d0ad14bcf6456ce368b830fea886Stephen Hines if (rsym->isUndef() && !rsym->isDyn() && !rsym->isWeak() && !rsym->isNull()) 22387f34658dec9097d987d254a990ea7f311bfc95fStephen Hines issueUndefRef(pReloc, pSection, pInput); 224f7ac0f19a1c8d0ad14bcf6456ce368b830fea886Stephen Hines} 225f7ac0f19a1c8d0ad14bcf6456ce368b830fea886Stephen Hines 22637b74a387bb3993387029859c2d9d051c41c724eStephen Hinesvoid HexagonRelocator::addCopyReloc(ResolveInfo& pSym, 22737b74a387bb3993387029859c2d9d051c41c724eStephen Hines HexagonLDBackend& pTarget) { 22837b74a387bb3993387029859c2d9d051c41c724eStephen Hines Relocation& rel_entry = *pTarget.getRelaDyn().create(); 229f7ac0f19a1c8d0ad14bcf6456ce368b830fea886Stephen Hines rel_entry.setType(pTarget.getCopyRelType()); 230f7ac0f19a1c8d0ad14bcf6456ce368b830fea886Stephen Hines assert(pSym.outSymbol()->hasFragRef()); 231f7ac0f19a1c8d0ad14bcf6456ce368b830fea886Stephen Hines rel_entry.targetRef().assign(*pSym.outSymbol()->fragRef()); 232f7ac0f19a1c8d0ad14bcf6456ce368b830fea886Stephen Hines rel_entry.setSymInfo(&pSym); 233f7ac0f19a1c8d0ad14bcf6456ce368b830fea886Stephen Hines} 234f7ac0f19a1c8d0ad14bcf6456ce368b830fea886Stephen Hines 23537b74a387bb3993387029859c2d9d051c41c724eStephen Hinesvoid HexagonRelocator::scanLocalReloc(Relocation& pReloc, 23637b74a387bb3993387029859c2d9d051c41c724eStephen Hines IRBuilder& pBuilder, 23737b74a387bb3993387029859c2d9d051c41c724eStephen Hines Module& pModule, 23837b74a387bb3993387029859c2d9d051c41c724eStephen Hines LDSection& pSection) { 239f7ac0f19a1c8d0ad14bcf6456ce368b830fea886Stephen Hines // rsym - The relocation target symbol 24037b74a387bb3993387029859c2d9d051c41c724eStephen Hines ResolveInfo* rsym = pReloc.symInfo(); 24187f34658dec9097d987d254a990ea7f311bfc95fStephen Hines 24287f34658dec9097d987d254a990ea7f311bfc95fStephen Hines switch (pReloc.type()) { 24337b74a387bb3993387029859c2d9d051c41c724eStephen Hines case llvm::ELF::R_HEX_LO16: 24437b74a387bb3993387029859c2d9d051c41c724eStephen Hines case llvm::ELF::R_HEX_HI16: 24537b74a387bb3993387029859c2d9d051c41c724eStephen Hines case llvm::ELF::R_HEX_16: 24637b74a387bb3993387029859c2d9d051c41c724eStephen Hines case llvm::ELF::R_HEX_8: 24737b74a387bb3993387029859c2d9d051c41c724eStephen Hines case llvm::ELF::R_HEX_32_6_X: 24837b74a387bb3993387029859c2d9d051c41c724eStephen Hines case llvm::ELF::R_HEX_16_X: 24937b74a387bb3993387029859c2d9d051c41c724eStephen Hines case llvm::ELF::R_HEX_12_X: 25037b74a387bb3993387029859c2d9d051c41c724eStephen Hines case llvm::ELF::R_HEX_11_X: 25137b74a387bb3993387029859c2d9d051c41c724eStephen Hines case llvm::ELF::R_HEX_10_X: 25237b74a387bb3993387029859c2d9d051c41c724eStephen Hines case llvm::ELF::R_HEX_9_X: 25337b74a387bb3993387029859c2d9d051c41c724eStephen Hines case llvm::ELF::R_HEX_8_X: 25437b74a387bb3993387029859c2d9d051c41c724eStephen Hines case llvm::ELF::R_HEX_7_X: 25537b74a387bb3993387029859c2d9d051c41c724eStephen Hines case llvm::ELF::R_HEX_6_X: 25637b74a387bb3993387029859c2d9d051c41c724eStephen Hines assert(!(rsym->reserved() & ReserveRel) && 25737b74a387bb3993387029859c2d9d051c41c724eStephen Hines "Cannot apply this relocation for read only section"); 25837b74a387bb3993387029859c2d9d051c41c724eStephen Hines return; 25987f34658dec9097d987d254a990ea7f311bfc95fStephen Hines 26037b74a387bb3993387029859c2d9d051c41c724eStephen Hines case llvm::ELF::R_HEX_32: 26137b74a387bb3993387029859c2d9d051c41c724eStephen Hines // If buiding PIC object (shared library or PIC executable), 26237b74a387bb3993387029859c2d9d051c41c724eStephen Hines // a dynamic relocations with RELATIVE type to this location is needed. 26337b74a387bb3993387029859c2d9d051c41c724eStephen Hines // Reserve an entry in .rel.dyn 26437b74a387bb3993387029859c2d9d051c41c724eStephen Hines if (config().isCodeIndep()) { 26537b74a387bb3993387029859c2d9d051c41c724eStephen Hines Relocation& reloc = helper_DynRel_init(rsym, 26637b74a387bb3993387029859c2d9d051c41c724eStephen Hines *pReloc.targetRef().frag(), 26737b74a387bb3993387029859c2d9d051c41c724eStephen Hines pReloc.targetRef().offset(), 26837b74a387bb3993387029859c2d9d051c41c724eStephen Hines llvm::ELF::R_HEX_RELATIVE, 26937b74a387bb3993387029859c2d9d051c41c724eStephen Hines *this); 27037b74a387bb3993387029859c2d9d051c41c724eStephen Hines // we need to set up the relocation addend at apply relocation, record 27137b74a387bb3993387029859c2d9d051c41c724eStephen Hines // the 27237b74a387bb3993387029859c2d9d051c41c724eStephen Hines // relocation 27337b74a387bb3993387029859c2d9d051c41c724eStephen Hines getRelRelMap().record(pReloc, reloc); 27487f34658dec9097d987d254a990ea7f311bfc95fStephen Hines 27537b74a387bb3993387029859c2d9d051c41c724eStephen Hines // set Rel bit 27637b74a387bb3993387029859c2d9d051c41c724eStephen Hines rsym->setReserved(rsym->reserved() | ReserveRel); 27737b74a387bb3993387029859c2d9d051c41c724eStephen Hines getTarget().checkAndSetHasTextRel(*pSection.getLink()); 27837b74a387bb3993387029859c2d9d051c41c724eStephen Hines } 27937b74a387bb3993387029859c2d9d051c41c724eStephen Hines return; 280f7ac0f19a1c8d0ad14bcf6456ce368b830fea886Stephen Hines 28137b74a387bb3993387029859c2d9d051c41c724eStephen Hines default: 28237b74a387bb3993387029859c2d9d051c41c724eStephen Hines return; 283f7ac0f19a1c8d0ad14bcf6456ce368b830fea886Stephen Hines } 284f7ac0f19a1c8d0ad14bcf6456ce368b830fea886Stephen Hines} 285f7ac0f19a1c8d0ad14bcf6456ce368b830fea886Stephen Hines 28637b74a387bb3993387029859c2d9d051c41c724eStephen Hinesvoid HexagonRelocator::scanGlobalReloc(Relocation& pReloc, 28737b74a387bb3993387029859c2d9d051c41c724eStephen Hines IRBuilder& pBuilder, 28837b74a387bb3993387029859c2d9d051c41c724eStephen Hines Module& pModule, 28937b74a387bb3993387029859c2d9d051c41c724eStephen Hines LDSection& pSection) { 290f7ac0f19a1c8d0ad14bcf6456ce368b830fea886Stephen Hines // rsym - The relocation target symbol 29137b74a387bb3993387029859c2d9d051c41c724eStephen Hines ResolveInfo* rsym = pReloc.symInfo(); 29237b74a387bb3993387029859c2d9d051c41c724eStephen Hines HexagonLDBackend& ld_backend = getTarget(); 29387f34658dec9097d987d254a990ea7f311bfc95fStephen Hines 29487f34658dec9097d987d254a990ea7f311bfc95fStephen Hines switch (pReloc.type()) { 29537b74a387bb3993387029859c2d9d051c41c724eStephen Hines case llvm::ELF::R_HEX_LO16: 29637b74a387bb3993387029859c2d9d051c41c724eStephen Hines case llvm::ELF::R_HEX_HI16: 29737b74a387bb3993387029859c2d9d051c41c724eStephen Hines case llvm::ELF::R_HEX_16: 29837b74a387bb3993387029859c2d9d051c41c724eStephen Hines case llvm::ELF::R_HEX_8: 29937b74a387bb3993387029859c2d9d051c41c724eStephen Hines case llvm::ELF::R_HEX_32_6_X: 30037b74a387bb3993387029859c2d9d051c41c724eStephen Hines case llvm::ELF::R_HEX_16_X: 30137b74a387bb3993387029859c2d9d051c41c724eStephen Hines case llvm::ELF::R_HEX_12_X: 30237b74a387bb3993387029859c2d9d051c41c724eStephen Hines case llvm::ELF::R_HEX_11_X: 30337b74a387bb3993387029859c2d9d051c41c724eStephen Hines case llvm::ELF::R_HEX_10_X: 30437b74a387bb3993387029859c2d9d051c41c724eStephen Hines case llvm::ELF::R_HEX_9_X: 30537b74a387bb3993387029859c2d9d051c41c724eStephen Hines case llvm::ELF::R_HEX_8_X: 30637b74a387bb3993387029859c2d9d051c41c724eStephen Hines case llvm::ELF::R_HEX_7_X: 30737b74a387bb3993387029859c2d9d051c41c724eStephen Hines case llvm::ELF::R_HEX_6_X: 30837b74a387bb3993387029859c2d9d051c41c724eStephen Hines assert(!(rsym->reserved() & ReserveRel) && 30937b74a387bb3993387029859c2d9d051c41c724eStephen Hines "Cannot apply this relocation for read only section"); 31037b74a387bb3993387029859c2d9d051c41c724eStephen Hines return; 311f7ac0f19a1c8d0ad14bcf6456ce368b830fea886Stephen Hines 31237b74a387bb3993387029859c2d9d051c41c724eStephen Hines case llvm::ELF::R_HEX_32: 31337b74a387bb3993387029859c2d9d051c41c724eStephen Hines if (ld_backend.symbolNeedsPLT(*rsym)) { 31437b74a387bb3993387029859c2d9d051c41c724eStephen Hines // create PLT for this symbol if it does not have. 31537b74a387bb3993387029859c2d9d051c41c724eStephen Hines if (!(rsym->reserved() & ReservePLT)) { 31637b74a387bb3993387029859c2d9d051c41c724eStephen Hines helper_PLT_init(pReloc, *this); 31737b74a387bb3993387029859c2d9d051c41c724eStephen Hines rsym->setReserved(rsym->reserved() | ReservePLT); 31837b74a387bb3993387029859c2d9d051c41c724eStephen Hines } 319f7ac0f19a1c8d0ad14bcf6456ce368b830fea886Stephen Hines } 32087f34658dec9097d987d254a990ea7f311bfc95fStephen Hines 32137b74a387bb3993387029859c2d9d051c41c724eStephen Hines if (ld_backend.symbolNeedsDynRel( 32237b74a387bb3993387029859c2d9d051c41c724eStephen Hines *rsym, (rsym->reserved() & ReservePLT), true)) { 32337b74a387bb3993387029859c2d9d051c41c724eStephen Hines if (ld_backend.symbolNeedsCopyReloc(pReloc, *rsym)) { 32437b74a387bb3993387029859c2d9d051c41c724eStephen Hines LDSymbol& cpy_sym = 32537b74a387bb3993387029859c2d9d051c41c724eStephen Hines defineSymbolforCopyReloc(pBuilder, *rsym, ld_backend); 32637b74a387bb3993387029859c2d9d051c41c724eStephen Hines addCopyReloc(*cpy_sym.resolveInfo(), ld_backend); 32737b74a387bb3993387029859c2d9d051c41c724eStephen Hines } else { 32837b74a387bb3993387029859c2d9d051c41c724eStephen Hines Relocation& reloc = helper_DynRel_init(rsym, 32937b74a387bb3993387029859c2d9d051c41c724eStephen Hines *pReloc.targetRef().frag(), 33037b74a387bb3993387029859c2d9d051c41c724eStephen Hines pReloc.targetRef().offset(), 33137b74a387bb3993387029859c2d9d051c41c724eStephen Hines llvm::ELF::R_HEX_RELATIVE, 33237b74a387bb3993387029859c2d9d051c41c724eStephen Hines *this); 33337b74a387bb3993387029859c2d9d051c41c724eStephen Hines // we need to set up the relocation addend at apply relocation, record 33437b74a387bb3993387029859c2d9d051c41c724eStephen Hines // the 33537b74a387bb3993387029859c2d9d051c41c724eStephen Hines // relocation 33637b74a387bb3993387029859c2d9d051c41c724eStephen Hines getRelRelMap().record(pReloc, reloc); 33737b74a387bb3993387029859c2d9d051c41c724eStephen Hines rsym->setReserved(rsym->reserved() | ReserveRel); 33837b74a387bb3993387029859c2d9d051c41c724eStephen Hines ld_backend.checkAndSetHasTextRel(*pSection.getLink()); 33937b74a387bb3993387029859c2d9d051c41c724eStephen Hines } 34087f34658dec9097d987d254a990ea7f311bfc95fStephen Hines } 34137b74a387bb3993387029859c2d9d051c41c724eStephen Hines return; 34287f34658dec9097d987d254a990ea7f311bfc95fStephen Hines 34337b74a387bb3993387029859c2d9d051c41c724eStephen Hines case llvm::ELF::R_HEX_GOTREL_LO16: 34437b74a387bb3993387029859c2d9d051c41c724eStephen Hines case llvm::ELF::R_HEX_GOTREL_HI16: 34537b74a387bb3993387029859c2d9d051c41c724eStephen Hines case llvm::ELF::R_HEX_GOTREL_32: 34637b74a387bb3993387029859c2d9d051c41c724eStephen Hines case llvm::ELF::R_HEX_GOTREL_32_6_X: 34737b74a387bb3993387029859c2d9d051c41c724eStephen Hines case llvm::ELF::R_HEX_GOTREL_16_X: 34837b74a387bb3993387029859c2d9d051c41c724eStephen Hines case llvm::ELF::R_HEX_GOTREL_11_X: 34937b74a387bb3993387029859c2d9d051c41c724eStephen Hines // This assumes that GOT exists 350f7ac0f19a1c8d0ad14bcf6456ce368b830fea886Stephen Hines return; 351f7ac0f19a1c8d0ad14bcf6456ce368b830fea886Stephen Hines 35237b74a387bb3993387029859c2d9d051c41c724eStephen Hines case llvm::ELF::R_HEX_GOT_LO16: 35337b74a387bb3993387029859c2d9d051c41c724eStephen Hines case llvm::ELF::R_HEX_GOT_HI16: 35437b74a387bb3993387029859c2d9d051c41c724eStephen Hines case llvm::ELF::R_HEX_GOT_32: 35537b74a387bb3993387029859c2d9d051c41c724eStephen Hines case llvm::ELF::R_HEX_GOT_16: 35637b74a387bb3993387029859c2d9d051c41c724eStephen Hines case llvm::ELF::R_HEX_GOT_32_6_X: 35737b74a387bb3993387029859c2d9d051c41c724eStephen Hines case llvm::ELF::R_HEX_GOT_16_X: 35837b74a387bb3993387029859c2d9d051c41c724eStephen Hines case llvm::ELF::R_HEX_GOT_11_X: 35937b74a387bb3993387029859c2d9d051c41c724eStephen Hines // Symbol needs GOT entry, reserve entry in .got 36037b74a387bb3993387029859c2d9d051c41c724eStephen Hines // return if we already create GOT for this symbol 36137b74a387bb3993387029859c2d9d051c41c724eStephen Hines if (rsym->reserved() & ReserveGOT) 36237b74a387bb3993387029859c2d9d051c41c724eStephen Hines return; 36337b74a387bb3993387029859c2d9d051c41c724eStephen Hines // If the GOT is used in statically linked binaries, 36437b74a387bb3993387029859c2d9d051c41c724eStephen Hines // the GOT entry is enough and no relocation is needed. 36537b74a387bb3993387029859c2d9d051c41c724eStephen Hines if (config().isCodeStatic()) 36637b74a387bb3993387029859c2d9d051c41c724eStephen Hines helper_GOT_init(pReloc, false, *this); 36737b74a387bb3993387029859c2d9d051c41c724eStephen Hines else 36837b74a387bb3993387029859c2d9d051c41c724eStephen Hines helper_GOT_init(pReloc, true, *this); 36937b74a387bb3993387029859c2d9d051c41c724eStephen Hines // set GOT bit 37037b74a387bb3993387029859c2d9d051c41c724eStephen Hines rsym->setReserved(rsym->reserved() | ReserveGOT); 37187f34658dec9097d987d254a990ea7f311bfc95fStephen Hines return; 37287f34658dec9097d987d254a990ea7f311bfc95fStephen Hines 37337b74a387bb3993387029859c2d9d051c41c724eStephen Hines case llvm::ELF::R_HEX_B22_PCREL: 37437b74a387bb3993387029859c2d9d051c41c724eStephen Hines case llvm::ELF::R_HEX_B15_PCREL: 37537b74a387bb3993387029859c2d9d051c41c724eStephen Hines case llvm::ELF::R_HEX_B7_PCREL: 37637b74a387bb3993387029859c2d9d051c41c724eStephen Hines case llvm::ELF::R_HEX_B13_PCREL: 37737b74a387bb3993387029859c2d9d051c41c724eStephen Hines case llvm::ELF::R_HEX_B9_PCREL: 37837b74a387bb3993387029859c2d9d051c41c724eStephen Hines case llvm::ELF::R_HEX_B32_PCREL_X: 37937b74a387bb3993387029859c2d9d051c41c724eStephen Hines case llvm::ELF::R_HEX_B22_PCREL_X: 38037b74a387bb3993387029859c2d9d051c41c724eStephen Hines case llvm::ELF::R_HEX_B15_PCREL_X: 38137b74a387bb3993387029859c2d9d051c41c724eStephen Hines case llvm::ELF::R_HEX_B13_PCREL_X: 38237b74a387bb3993387029859c2d9d051c41c724eStephen Hines case llvm::ELF::R_HEX_B9_PCREL_X: 38337b74a387bb3993387029859c2d9d051c41c724eStephen Hines case llvm::ELF::R_HEX_B7_PCREL_X: 38437b74a387bb3993387029859c2d9d051c41c724eStephen Hines case llvm::ELF::R_HEX_32_PCREL: 38537b74a387bb3993387029859c2d9d051c41c724eStephen Hines case llvm::ELF::R_HEX_6_PCREL_X: 38637b74a387bb3993387029859c2d9d051c41c724eStephen Hines case llvm::ELF::R_HEX_PLT_B22_PCREL: 38737b74a387bb3993387029859c2d9d051c41c724eStephen Hines if (rsym->reserved() & ReservePLT) 38837b74a387bb3993387029859c2d9d051c41c724eStephen Hines return; 38937b74a387bb3993387029859c2d9d051c41c724eStephen Hines if (ld_backend.symbolNeedsPLT(*rsym) || 39037b74a387bb3993387029859c2d9d051c41c724eStephen Hines pReloc.type() == llvm::ELF::R_HEX_PLT_B22_PCREL) { 39137b74a387bb3993387029859c2d9d051c41c724eStephen Hines helper_PLT_init(pReloc, *this); 39237b74a387bb3993387029859c2d9d051c41c724eStephen Hines rsym->setReserved(rsym->reserved() | ReservePLT); 39337b74a387bb3993387029859c2d9d051c41c724eStephen Hines } 39437b74a387bb3993387029859c2d9d051c41c724eStephen Hines return; 39587f34658dec9097d987d254a990ea7f311bfc95fStephen Hines 39637b74a387bb3993387029859c2d9d051c41c724eStephen Hines default: 39737b74a387bb3993387029859c2d9d051c41c724eStephen Hines break; 39837b74a387bb3993387029859c2d9d051c41c724eStephen Hines } // end of switch 399f7ac0f19a1c8d0ad14bcf6456ce368b830fea886Stephen Hines} 400f7ac0f19a1c8d0ad14bcf6456ce368b830fea886Stephen Hines 401f7ac0f19a1c8d0ad14bcf6456ce368b830fea886Stephen Hines/// defineSymbolforCopyReloc 402f7ac0f19a1c8d0ad14bcf6456ce368b830fea886Stephen Hines/// For a symbol needing copy relocation, define a copy symbol in the BSS 403f7ac0f19a1c8d0ad14bcf6456ce368b830fea886Stephen Hines/// section and all other reference to this symbol should refer to this 404f7ac0f19a1c8d0ad14bcf6456ce368b830fea886Stephen Hines/// copy. 405f7ac0f19a1c8d0ad14bcf6456ce368b830fea886Stephen Hines/// @note This is executed at `scan relocation' stage. 40637b74a387bb3993387029859c2d9d051c41c724eStephen HinesLDSymbol& HexagonRelocator::defineSymbolforCopyReloc( 40737b74a387bb3993387029859c2d9d051c41c724eStephen Hines IRBuilder& pBuilder, 40837b74a387bb3993387029859c2d9d051c41c724eStephen Hines const ResolveInfo& pSym, 40937b74a387bb3993387029859c2d9d051c41c724eStephen Hines HexagonLDBackend& pTarget) { 410f7ac0f19a1c8d0ad14bcf6456ce368b830fea886Stephen Hines // get or create corresponding BSS LDSection 41137b74a387bb3993387029859c2d9d051c41c724eStephen Hines LDSection* bss_sect_hdr = NULL; 41237b74a387bb3993387029859c2d9d051c41c724eStephen Hines ELFFileFormat* file_format = pTarget.getOutputFormat(); 413f7ac0f19a1c8d0ad14bcf6456ce368b830fea886Stephen Hines if (ResolveInfo::ThreadLocal == pSym.type()) 414f7ac0f19a1c8d0ad14bcf6456ce368b830fea886Stephen Hines bss_sect_hdr = &file_format->getTBSS(); 415f7ac0f19a1c8d0ad14bcf6456ce368b830fea886Stephen Hines else 416f7ac0f19a1c8d0ad14bcf6456ce368b830fea886Stephen Hines bss_sect_hdr = &file_format->getBSS(); 417f7ac0f19a1c8d0ad14bcf6456ce368b830fea886Stephen Hines 418f7ac0f19a1c8d0ad14bcf6456ce368b830fea886Stephen Hines // get or create corresponding BSS SectionData 41937b74a387bb3993387029859c2d9d051c41c724eStephen Hines assert(bss_sect_hdr != NULL); 42037b74a387bb3993387029859c2d9d051c41c724eStephen Hines SectionData* bss_section = NULL; 421f7ac0f19a1c8d0ad14bcf6456ce368b830fea886Stephen Hines if (bss_sect_hdr->hasSectionData()) 422f7ac0f19a1c8d0ad14bcf6456ce368b830fea886Stephen Hines bss_section = bss_sect_hdr->getSectionData(); 423f7ac0f19a1c8d0ad14bcf6456ce368b830fea886Stephen Hines else 424f7ac0f19a1c8d0ad14bcf6456ce368b830fea886Stephen Hines bss_section = IRBuilder::CreateSectionData(*bss_sect_hdr); 425f7ac0f19a1c8d0ad14bcf6456ce368b830fea886Stephen Hines 426f7ac0f19a1c8d0ad14bcf6456ce368b830fea886Stephen Hines // Determine the alignment by the symbol value 427f7ac0f19a1c8d0ad14bcf6456ce368b830fea886Stephen Hines // FIXME: here we use the largest alignment 428f7ac0f19a1c8d0ad14bcf6456ce368b830fea886Stephen Hines uint32_t addralign = config().targets().bitclass() / 8; 429f7ac0f19a1c8d0ad14bcf6456ce368b830fea886Stephen Hines 430f7ac0f19a1c8d0ad14bcf6456ce368b830fea886Stephen Hines // allocate space in BSS for the copy symbol 43137b74a387bb3993387029859c2d9d051c41c724eStephen Hines Fragment* frag = new FillFragment(0x0, 1, pSym.size()); 43287f34658dec9097d987d254a990ea7f311bfc95fStephen Hines uint64_t size = ObjectBuilder::AppendFragment(*frag, *bss_section, addralign); 433f7ac0f19a1c8d0ad14bcf6456ce368b830fea886Stephen Hines bss_sect_hdr->setSize(bss_sect_hdr->size() + size); 434f7ac0f19a1c8d0ad14bcf6456ce368b830fea886Stephen Hines 435f7ac0f19a1c8d0ad14bcf6456ce368b830fea886Stephen Hines // change symbol binding to Global if it's a weak symbol 43637b74a387bb3993387029859c2d9d051c41c724eStephen Hines ResolveInfo::Binding binding = (ResolveInfo::Binding)pSym.binding(); 437f7ac0f19a1c8d0ad14bcf6456ce368b830fea886Stephen Hines if (binding == ResolveInfo::Weak) 438f7ac0f19a1c8d0ad14bcf6456ce368b830fea886Stephen Hines binding = ResolveInfo::Global; 439f7ac0f19a1c8d0ad14bcf6456ce368b830fea886Stephen Hines 440f7ac0f19a1c8d0ad14bcf6456ce368b830fea886Stephen Hines // Define the copy symbol in the bss section and resolve it 44137b74a387bb3993387029859c2d9d051c41c724eStephen Hines LDSymbol* cpy_sym = pBuilder.AddSymbol<IRBuilder::Force, IRBuilder::Resolve>( 44237b74a387bb3993387029859c2d9d051c41c724eStephen Hines pSym.name(), 44337b74a387bb3993387029859c2d9d051c41c724eStephen Hines (ResolveInfo::Type)pSym.type(), 44437b74a387bb3993387029859c2d9d051c41c724eStephen Hines ResolveInfo::Define, 44537b74a387bb3993387029859c2d9d051c41c724eStephen Hines binding, 44637b74a387bb3993387029859c2d9d051c41c724eStephen Hines pSym.size(), // size 44737b74a387bb3993387029859c2d9d051c41c724eStephen Hines 0x0, // value 44837b74a387bb3993387029859c2d9d051c41c724eStephen Hines FragmentRef::Create(*frag, 0x0), 44937b74a387bb3993387029859c2d9d051c41c724eStephen Hines (ResolveInfo::Visibility)pSym.other()); 450f7ac0f19a1c8d0ad14bcf6456ce368b830fea886Stephen Hines 451f7ac0f19a1c8d0ad14bcf6456ce368b830fea886Stephen Hines // output all other alias symbols if any 45237b74a387bb3993387029859c2d9d051c41c724eStephen Hines Module& pModule = pBuilder.getModule(); 45337b74a387bb3993387029859c2d9d051c41c724eStephen Hines Module::AliasList* alias_list = pModule.getAliasList(pSym); 45437b74a387bb3993387029859c2d9d051c41c724eStephen Hines if (alias_list != NULL) { 45587f34658dec9097d987d254a990ea7f311bfc95fStephen Hines Module::alias_iterator it, it_e = alias_list->end(); 45687f34658dec9097d987d254a990ea7f311bfc95fStephen Hines for (it = alias_list->begin(); it != it_e; ++it) { 45737b74a387bb3993387029859c2d9d051c41c724eStephen Hines const ResolveInfo* alias = *it; 45887f34658dec9097d987d254a990ea7f311bfc95fStephen Hines if (alias != &pSym && alias->isDyn()) { 459f7ac0f19a1c8d0ad14bcf6456ce368b830fea886Stephen Hines pBuilder.AddSymbol<IRBuilder::Force, IRBuilder::Resolve>( 46037b74a387bb3993387029859c2d9d051c41c724eStephen Hines alias->name(), 46137b74a387bb3993387029859c2d9d051c41c724eStephen Hines (ResolveInfo::Type)alias->type(), 46237b74a387bb3993387029859c2d9d051c41c724eStephen Hines ResolveInfo::Define, 46337b74a387bb3993387029859c2d9d051c41c724eStephen Hines binding, 46437b74a387bb3993387029859c2d9d051c41c724eStephen Hines alias->size(), // size 46537b74a387bb3993387029859c2d9d051c41c724eStephen Hines 0x0, // value 46687f34658dec9097d987d254a990ea7f311bfc95fStephen Hines FragmentRef::Create(*frag, 0x0), 46737b74a387bb3993387029859c2d9d051c41c724eStephen Hines (ResolveInfo::Visibility)alias->other()); 468f7ac0f19a1c8d0ad14bcf6456ce368b830fea886Stephen Hines } 469f7ac0f19a1c8d0ad14bcf6456ce368b830fea886Stephen Hines } 470f7ac0f19a1c8d0ad14bcf6456ce368b830fea886Stephen Hines } 471f7ac0f19a1c8d0ad14bcf6456ce368b830fea886Stephen Hines 472f7ac0f19a1c8d0ad14bcf6456ce368b830fea886Stephen Hines return *cpy_sym; 473f7ac0f19a1c8d0ad14bcf6456ce368b830fea886Stephen Hines} 474f7ac0f19a1c8d0ad14bcf6456ce368b830fea886Stephen Hines 47537b74a387bb3993387029859c2d9d051c41c724eStephen Hinesvoid HexagonRelocator::partialScanRelocation(Relocation& pReloc, 47637b74a387bb3993387029859c2d9d051c41c724eStephen Hines Module& pModule) { 477f7ac0f19a1c8d0ad14bcf6456ce368b830fea886Stephen Hines pReloc.updateAddend(); 478f7ac0f19a1c8d0ad14bcf6456ce368b830fea886Stephen Hines // if we meet a section symbol 479f7ac0f19a1c8d0ad14bcf6456ce368b830fea886Stephen Hines if (pReloc.symInfo()->type() == ResolveInfo::Section) { 48037b74a387bb3993387029859c2d9d051c41c724eStephen Hines LDSymbol* input_sym = pReloc.symInfo()->outSymbol(); 481f7ac0f19a1c8d0ad14bcf6456ce368b830fea886Stephen Hines 482f7ac0f19a1c8d0ad14bcf6456ce368b830fea886Stephen Hines // 1. update the relocation target offset 483f7ac0f19a1c8d0ad14bcf6456ce368b830fea886Stephen Hines assert(input_sym->hasFragRef()); 484f7ac0f19a1c8d0ad14bcf6456ce368b830fea886Stephen Hines // 2. get the output LDSection which the symbol defined in 48537b74a387bb3993387029859c2d9d051c41c724eStephen Hines const LDSection& out_sect = 48687f34658dec9097d987d254a990ea7f311bfc95fStephen Hines input_sym->fragRef()->frag()->getParent()->getSection(); 48737b74a387bb3993387029859c2d9d051c41c724eStephen Hines ResolveInfo* sym_info = 48887f34658dec9097d987d254a990ea7f311bfc95fStephen Hines pModule.getSectionSymbolSet().get(out_sect)->resolveInfo(); 489f7ac0f19a1c8d0ad14bcf6456ce368b830fea886Stephen Hines // set relocation target symbol to the output section symbol's resolveInfo 490f7ac0f19a1c8d0ad14bcf6456ce368b830fea886Stephen Hines pReloc.setSymInfo(sym_info); 491f7ac0f19a1c8d0ad14bcf6456ce368b830fea886Stephen Hines } 492f7ac0f19a1c8d0ad14bcf6456ce368b830fea886Stephen Hines} 493f7ac0f19a1c8d0ad14bcf6456ce368b830fea886Stephen Hines 4946f75755c9204b1d8817ae5a65a2f7e5af0ec3f70Stephen Hines//=========================================// 4956f75755c9204b1d8817ae5a65a2f7e5af0ec3f70Stephen Hines// Each relocation function implementation // 4966f75755c9204b1d8817ae5a65a2f7e5af0ec3f70Stephen Hines//=========================================// 4976f75755c9204b1d8817ae5a65a2f7e5af0ec3f70Stephen Hines 4986f75755c9204b1d8817ae5a65a2f7e5af0ec3f70Stephen Hines// R_HEX_NONE 49937b74a387bb3993387029859c2d9d051c41c724eStephen HinesRelocator::Result none(Relocation& pReloc, HexagonRelocator& pParent) { 500551ae4ebd3e9d137ea668fb83ae4a55b8cfba451Stephen Hines return Relocator::OK; 5016f75755c9204b1d8817ae5a65a2f7e5af0ec3f70Stephen Hines} 5026f75755c9204b1d8817ae5a65a2f7e5af0ec3f70Stephen Hines 50337b74a387bb3993387029859c2d9d051c41c724eStephen Hines// R_HEX_32 and its class of relocations use only addend and symbol value 50487f34658dec9097d987d254a990ea7f311bfc95fStephen Hines// S + A : result is unsigned truncate. 50587f34658dec9097d987d254a990ea7f311bfc95fStephen Hines// Exception: R_HEX_32_6_X : unsigned verify 50637b74a387bb3993387029859c2d9d051c41c724eStephen HinesRelocator::Result applyAbs(Relocation& pReloc) { 507551ae4ebd3e9d137ea668fb83ae4a55b8cfba451Stephen Hines Relocator::Address S = pReloc.symValue(); 508551ae4ebd3e9d137ea668fb83ae4a55b8cfba451Stephen Hines Relocator::DWord A = pReloc.addend(); 50987f34658dec9097d987d254a990ea7f311bfc95fStephen Hines uint32_t result = (uint32_t)(S + A); 51087f34658dec9097d987d254a990ea7f311bfc95fStephen Hines uint32_t bitMask = 0; 51187f34658dec9097d987d254a990ea7f311bfc95fStephen Hines uint32_t effectiveBits = 0; 51287f34658dec9097d987d254a990ea7f311bfc95fStephen Hines uint32_t alignment = 1; 51387f34658dec9097d987d254a990ea7f311bfc95fStephen Hines uint32_t shift = 0; 51487f34658dec9097d987d254a990ea7f311bfc95fStephen Hines 51587f34658dec9097d987d254a990ea7f311bfc95fStephen Hines switch (pReloc.type()) { 51637b74a387bb3993387029859c2d9d051c41c724eStephen Hines case llvm::ELF::R_HEX_LO16: 51737b74a387bb3993387029859c2d9d051c41c724eStephen Hines bitMask = 0x00c03fff; 51837b74a387bb3993387029859c2d9d051c41c724eStephen Hines break; 51937b74a387bb3993387029859c2d9d051c41c724eStephen Hines 52037b74a387bb3993387029859c2d9d051c41c724eStephen Hines case llvm::ELF::R_HEX_HI16: 52137b74a387bb3993387029859c2d9d051c41c724eStephen Hines shift = 16; 52237b74a387bb3993387029859c2d9d051c41c724eStephen Hines bitMask = 0x00c03fff; 52337b74a387bb3993387029859c2d9d051c41c724eStephen Hines break; 52437b74a387bb3993387029859c2d9d051c41c724eStephen Hines 52537b74a387bb3993387029859c2d9d051c41c724eStephen Hines case llvm::ELF::R_HEX_32: 52637b74a387bb3993387029859c2d9d051c41c724eStephen Hines bitMask = 0xffffffff; 52737b74a387bb3993387029859c2d9d051c41c724eStephen Hines break; 52837b74a387bb3993387029859c2d9d051c41c724eStephen Hines 52937b74a387bb3993387029859c2d9d051c41c724eStephen Hines case llvm::ELF::R_HEX_16: 53037b74a387bb3993387029859c2d9d051c41c724eStephen Hines bitMask = 0x0000ffff; 53137b74a387bb3993387029859c2d9d051c41c724eStephen Hines alignment = 2; 53237b74a387bb3993387029859c2d9d051c41c724eStephen Hines break; 53337b74a387bb3993387029859c2d9d051c41c724eStephen Hines 53437b74a387bb3993387029859c2d9d051c41c724eStephen Hines case llvm::ELF::R_HEX_8: 53537b74a387bb3993387029859c2d9d051c41c724eStephen Hines bitMask = 0x000000ff; 53637b74a387bb3993387029859c2d9d051c41c724eStephen Hines alignment = 1; 53737b74a387bb3993387029859c2d9d051c41c724eStephen Hines break; 53837b74a387bb3993387029859c2d9d051c41c724eStephen Hines 53937b74a387bb3993387029859c2d9d051c41c724eStephen Hines case llvm::ELF::R_HEX_12_X: 54037b74a387bb3993387029859c2d9d051c41c724eStephen Hines bitMask = 0x000007e0; 54137b74a387bb3993387029859c2d9d051c41c724eStephen Hines break; 54237b74a387bb3993387029859c2d9d051c41c724eStephen Hines 54337b74a387bb3993387029859c2d9d051c41c724eStephen Hines case llvm::ELF::R_HEX_32_6_X: 54437b74a387bb3993387029859c2d9d051c41c724eStephen Hines bitMask = 0xfff3fff; 54537b74a387bb3993387029859c2d9d051c41c724eStephen Hines shift = 6; 54637b74a387bb3993387029859c2d9d051c41c724eStephen Hines effectiveBits = 26; 54737b74a387bb3993387029859c2d9d051c41c724eStephen Hines break; 54837b74a387bb3993387029859c2d9d051c41c724eStephen Hines 54937b74a387bb3993387029859c2d9d051c41c724eStephen Hines case llvm::ELF::R_HEX_16_X: 55037b74a387bb3993387029859c2d9d051c41c724eStephen Hines case llvm::ELF::R_HEX_11_X: 55137b74a387bb3993387029859c2d9d051c41c724eStephen Hines case llvm::ELF::R_HEX_10_X: 55237b74a387bb3993387029859c2d9d051c41c724eStephen Hines case llvm::ELF::R_HEX_9_X: 55337b74a387bb3993387029859c2d9d051c41c724eStephen Hines case llvm::ELF::R_HEX_8_X: 55437b74a387bb3993387029859c2d9d051c41c724eStephen Hines case llvm::ELF::R_HEX_7_X: 55537b74a387bb3993387029859c2d9d051c41c724eStephen Hines case llvm::ELF::R_HEX_6_X: 55637b74a387bb3993387029859c2d9d051c41c724eStephen Hines bitMask = FINDBITMASK(pReloc.target()); 55737b74a387bb3993387029859c2d9d051c41c724eStephen Hines break; 55837b74a387bb3993387029859c2d9d051c41c724eStephen Hines 55937b74a387bb3993387029859c2d9d051c41c724eStephen Hines default: 56037b74a387bb3993387029859c2d9d051c41c724eStephen Hines // show proper error 56137b74a387bb3993387029859c2d9d051c41c724eStephen Hines fatal(diag::unsupported_relocation) << static_cast<int>(pReloc.type()) 56237b74a387bb3993387029859c2d9d051c41c724eStephen Hines << "mclinker@googlegroups.com"; 5636f75755c9204b1d8817ae5a65a2f7e5af0ec3f70Stephen Hines } 5646f75755c9204b1d8817ae5a65a2f7e5af0ec3f70Stephen Hines 56587f34658dec9097d987d254a990ea7f311bfc95fStephen Hines if ((shift != 0) && (result % alignment != 0)) 566551ae4ebd3e9d137ea668fb83ae4a55b8cfba451Stephen Hines return Relocator::BadReloc; 5676f75755c9204b1d8817ae5a65a2f7e5af0ec3f70Stephen Hines 56887f34658dec9097d987d254a990ea7f311bfc95fStephen Hines result >>= shift; 5696f75755c9204b1d8817ae5a65a2f7e5af0ec3f70Stephen Hines 57087f34658dec9097d987d254a990ea7f311bfc95fStephen Hines if (effectiveBits) { 57187f34658dec9097d987d254a990ea7f311bfc95fStephen Hines uint32_t range = 1 << effectiveBits; 57287f34658dec9097d987d254a990ea7f311bfc95fStephen Hines if (result > (range - 1)) 573551ae4ebd3e9d137ea668fb83ae4a55b8cfba451Stephen Hines return Relocator::Overflow; 5746f75755c9204b1d8817ae5a65a2f7e5af0ec3f70Stephen Hines } 575f7ac0f19a1c8d0ad14bcf6456ce368b830fea886Stephen Hines 57687f34658dec9097d987d254a990ea7f311bfc95fStephen Hines pReloc.target() |= ApplyMask<uint32_t>(bitMask, result); 577551ae4ebd3e9d137ea668fb83ae4a55b8cfba451Stephen Hines return Relocator::OK; 578f7ac0f19a1c8d0ad14bcf6456ce368b830fea886Stephen Hines} 579f7ac0f19a1c8d0ad14bcf6456ce368b830fea886Stephen Hines 58037b74a387bb3993387029859c2d9d051c41c724eStephen Hines// R_HEX_B22_PCREL and its class of relocations, use 58187f34658dec9097d987d254a990ea7f311bfc95fStephen Hines// S + A - P : result is signed verify. 58287f34658dec9097d987d254a990ea7f311bfc95fStephen Hines// Exception: R_HEX_B32_PCREL_X : signed truncate 58387f34658dec9097d987d254a990ea7f311bfc95fStephen Hines// Another Exception: R_HEX_6_PCREL_X is unsigned truncate 58437b74a387bb3993387029859c2d9d051c41c724eStephen HinesRelocator::Result applyRel(Relocation& pReloc, int64_t pResult) { 58587f34658dec9097d987d254a990ea7f311bfc95fStephen Hines uint32_t bitMask = 0; 58687f34658dec9097d987d254a990ea7f311bfc95fStephen Hines uint32_t effectiveBits = 0; 58787f34658dec9097d987d254a990ea7f311bfc95fStephen Hines uint32_t alignment = 1; 58887f34658dec9097d987d254a990ea7f311bfc95fStephen Hines uint32_t result; 58987f34658dec9097d987d254a990ea7f311bfc95fStephen Hines uint32_t shift = 0; 59087f34658dec9097d987d254a990ea7f311bfc95fStephen Hines 59187f34658dec9097d987d254a990ea7f311bfc95fStephen Hines switch (pReloc.type()) { 59237b74a387bb3993387029859c2d9d051c41c724eStephen Hines case llvm::ELF::R_HEX_B22_PCREL: 59337b74a387bb3993387029859c2d9d051c41c724eStephen Hines bitMask = 0x01ff3ffe; 59437b74a387bb3993387029859c2d9d051c41c724eStephen Hines effectiveBits = 22; 59537b74a387bb3993387029859c2d9d051c41c724eStephen Hines alignment = 4; 59637b74a387bb3993387029859c2d9d051c41c724eStephen Hines shift = 2; 59737b74a387bb3993387029859c2d9d051c41c724eStephen Hines break; 59837b74a387bb3993387029859c2d9d051c41c724eStephen Hines 59937b74a387bb3993387029859c2d9d051c41c724eStephen Hines case llvm::ELF::R_HEX_B15_PCREL: 60037b74a387bb3993387029859c2d9d051c41c724eStephen Hines bitMask = 0x00df20fe; 60137b74a387bb3993387029859c2d9d051c41c724eStephen Hines effectiveBits = 15; 60237b74a387bb3993387029859c2d9d051c41c724eStephen Hines alignment = 4; 60337b74a387bb3993387029859c2d9d051c41c724eStephen Hines shift = 2; 60437b74a387bb3993387029859c2d9d051c41c724eStephen Hines break; 60537b74a387bb3993387029859c2d9d051c41c724eStephen Hines 60637b74a387bb3993387029859c2d9d051c41c724eStephen Hines case llvm::ELF::R_HEX_B7_PCREL: 60737b74a387bb3993387029859c2d9d051c41c724eStephen Hines bitMask = 0x00001f18; 60837b74a387bb3993387029859c2d9d051c41c724eStephen Hines effectiveBits = 7; 60937b74a387bb3993387029859c2d9d051c41c724eStephen Hines alignment = 4; 61037b74a387bb3993387029859c2d9d051c41c724eStephen Hines shift = 2; 61137b74a387bb3993387029859c2d9d051c41c724eStephen Hines break; 61237b74a387bb3993387029859c2d9d051c41c724eStephen Hines 61337b74a387bb3993387029859c2d9d051c41c724eStephen Hines case llvm::ELF::R_HEX_B13_PCREL: 61437b74a387bb3993387029859c2d9d051c41c724eStephen Hines bitMask = 0x00202ffe; 61537b74a387bb3993387029859c2d9d051c41c724eStephen Hines effectiveBits = 13; 61637b74a387bb3993387029859c2d9d051c41c724eStephen Hines alignment = 4; 61737b74a387bb3993387029859c2d9d051c41c724eStephen Hines shift = 2; 61837b74a387bb3993387029859c2d9d051c41c724eStephen Hines break; 61937b74a387bb3993387029859c2d9d051c41c724eStephen Hines 62037b74a387bb3993387029859c2d9d051c41c724eStephen Hines case llvm::ELF::R_HEX_B9_PCREL: 62137b74a387bb3993387029859c2d9d051c41c724eStephen Hines bitMask = 0x003000fe; 62237b74a387bb3993387029859c2d9d051c41c724eStephen Hines effectiveBits = 9; 62337b74a387bb3993387029859c2d9d051c41c724eStephen Hines alignment = 4; 62437b74a387bb3993387029859c2d9d051c41c724eStephen Hines shift = 2; 62537b74a387bb3993387029859c2d9d051c41c724eStephen Hines break; 62637b74a387bb3993387029859c2d9d051c41c724eStephen Hines 62737b74a387bb3993387029859c2d9d051c41c724eStephen Hines case llvm::ELF::R_HEX_B32_PCREL_X: 62837b74a387bb3993387029859c2d9d051c41c724eStephen Hines bitMask = 0xfff3fff; 62937b74a387bb3993387029859c2d9d051c41c724eStephen Hines shift = 6; 63037b74a387bb3993387029859c2d9d051c41c724eStephen Hines break; 63137b74a387bb3993387029859c2d9d051c41c724eStephen Hines 63237b74a387bb3993387029859c2d9d051c41c724eStephen Hines case llvm::ELF::R_HEX_B22_PCREL_X: 63337b74a387bb3993387029859c2d9d051c41c724eStephen Hines bitMask = 0x01ff3ffe; 63437b74a387bb3993387029859c2d9d051c41c724eStephen Hines effectiveBits = 22; 63537b74a387bb3993387029859c2d9d051c41c724eStephen Hines pResult &= 0x3f; 63637b74a387bb3993387029859c2d9d051c41c724eStephen Hines break; 63737b74a387bb3993387029859c2d9d051c41c724eStephen Hines 63837b74a387bb3993387029859c2d9d051c41c724eStephen Hines case llvm::ELF::R_HEX_B15_PCREL_X: 63937b74a387bb3993387029859c2d9d051c41c724eStephen Hines bitMask = 0x00df20fe; 64037b74a387bb3993387029859c2d9d051c41c724eStephen Hines effectiveBits = 15; 64137b74a387bb3993387029859c2d9d051c41c724eStephen Hines pResult &= 0x3f; 64237b74a387bb3993387029859c2d9d051c41c724eStephen Hines break; 64337b74a387bb3993387029859c2d9d051c41c724eStephen Hines 64437b74a387bb3993387029859c2d9d051c41c724eStephen Hines case llvm::ELF::R_HEX_B13_PCREL_X: 64537b74a387bb3993387029859c2d9d051c41c724eStephen Hines bitMask = 0x00202ffe; 64637b74a387bb3993387029859c2d9d051c41c724eStephen Hines effectiveBits = 13; 64737b74a387bb3993387029859c2d9d051c41c724eStephen Hines pResult &= 0x3f; 64837b74a387bb3993387029859c2d9d051c41c724eStephen Hines break; 64937b74a387bb3993387029859c2d9d051c41c724eStephen Hines 65037b74a387bb3993387029859c2d9d051c41c724eStephen Hines case llvm::ELF::R_HEX_B9_PCREL_X: 65137b74a387bb3993387029859c2d9d051c41c724eStephen Hines bitMask = 0x003000fe; 65237b74a387bb3993387029859c2d9d051c41c724eStephen Hines effectiveBits = 9; 65337b74a387bb3993387029859c2d9d051c41c724eStephen Hines pResult &= 0x3f; 65437b74a387bb3993387029859c2d9d051c41c724eStephen Hines break; 65537b74a387bb3993387029859c2d9d051c41c724eStephen Hines 65637b74a387bb3993387029859c2d9d051c41c724eStephen Hines case llvm::ELF::R_HEX_B7_PCREL_X: 65737b74a387bb3993387029859c2d9d051c41c724eStephen Hines bitMask = 0x00001f18; 65837b74a387bb3993387029859c2d9d051c41c724eStephen Hines effectiveBits = 7; 65937b74a387bb3993387029859c2d9d051c41c724eStephen Hines pResult &= 0x3f; 66037b74a387bb3993387029859c2d9d051c41c724eStephen Hines break; 66137b74a387bb3993387029859c2d9d051c41c724eStephen Hines 66237b74a387bb3993387029859c2d9d051c41c724eStephen Hines case llvm::ELF::R_HEX_32_PCREL: 66337b74a387bb3993387029859c2d9d051c41c724eStephen Hines bitMask = 0xffffffff; 66437b74a387bb3993387029859c2d9d051c41c724eStephen Hines effectiveBits = 32; 66537b74a387bb3993387029859c2d9d051c41c724eStephen Hines break; 66637b74a387bb3993387029859c2d9d051c41c724eStephen Hines 66737b74a387bb3993387029859c2d9d051c41c724eStephen Hines case llvm::ELF::R_HEX_6_PCREL_X: 66837b74a387bb3993387029859c2d9d051c41c724eStephen Hines // This is unique since it has a unsigned operand and its truncated 66937b74a387bb3993387029859c2d9d051c41c724eStephen Hines bitMask = FINDBITMASK(pReloc.target()); 67037b74a387bb3993387029859c2d9d051c41c724eStephen Hines result = pReloc.addend() + pReloc.symValue() - pReloc.place(); 67137b74a387bb3993387029859c2d9d051c41c724eStephen Hines pReloc.target() |= ApplyMask<uint32_t>(bitMask, result); 67237b74a387bb3993387029859c2d9d051c41c724eStephen Hines return Relocator::OK; 673f7ac0f19a1c8d0ad14bcf6456ce368b830fea886Stephen Hines 67437b74a387bb3993387029859c2d9d051c41c724eStephen Hines default: 67537b74a387bb3993387029859c2d9d051c41c724eStephen Hines // show proper error 67637b74a387bb3993387029859c2d9d051c41c724eStephen Hines fatal(diag::unsupported_relocation) << static_cast<int>(pReloc.type()) 67737b74a387bb3993387029859c2d9d051c41c724eStephen Hines << "mclinker@googlegroups.com"; 67887f34658dec9097d987d254a990ea7f311bfc95fStephen Hines } 679f7ac0f19a1c8d0ad14bcf6456ce368b830fea886Stephen Hines 68087f34658dec9097d987d254a990ea7f311bfc95fStephen Hines if ((shift != 0) && (pResult % alignment != 0)) 681551ae4ebd3e9d137ea668fb83ae4a55b8cfba451Stephen Hines return Relocator::BadReloc; 6826f75755c9204b1d8817ae5a65a2f7e5af0ec3f70Stephen Hines 68387f34658dec9097d987d254a990ea7f311bfc95fStephen Hines pResult >>= shift; 6846f75755c9204b1d8817ae5a65a2f7e5af0ec3f70Stephen Hines 68587f34658dec9097d987d254a990ea7f311bfc95fStephen Hines if (effectiveBits) { 68687f34658dec9097d987d254a990ea7f311bfc95fStephen Hines int64_t range = 1LL << (effectiveBits - 1); 68787f34658dec9097d987d254a990ea7f311bfc95fStephen Hines if ((pResult > (range - 1)) || (pResult < -range)) 688551ae4ebd3e9d137ea668fb83ae4a55b8cfba451Stephen Hines return Relocator::Overflow; 68987f34658dec9097d987d254a990ea7f311bfc95fStephen Hines } 6906f75755c9204b1d8817ae5a65a2f7e5af0ec3f70Stephen Hines 69137b74a387bb3993387029859c2d9d051c41c724eStephen Hines pReloc.target() |= (uint32_t)ApplyMask<int32_t>(bitMask, pResult); 692551ae4ebd3e9d137ea668fb83ae4a55b8cfba451Stephen Hines return Relocator::OK; 6936f75755c9204b1d8817ae5a65a2f7e5af0ec3f70Stephen Hines} 6946f75755c9204b1d8817ae5a65a2f7e5af0ec3f70Stephen Hines 69537b74a387bb3993387029859c2d9d051c41c724eStephen HinesRelocator::Result relocAbs(Relocation& pReloc, HexagonRelocator& pParent) { 69637b74a387bb3993387029859c2d9d051c41c724eStephen Hines ResolveInfo* rsym = pReloc.symInfo(); 697551ae4ebd3e9d137ea668fb83ae4a55b8cfba451Stephen Hines Relocator::Address S = pReloc.symValue(); 698551ae4ebd3e9d137ea668fb83ae4a55b8cfba451Stephen Hines Relocator::DWord A = pReloc.addend(); 6996f75755c9204b1d8817ae5a65a2f7e5af0ec3f70Stephen Hines 70087f34658dec9097d987d254a990ea7f311bfc95fStephen Hines Relocation* rel_entry = pParent.getRelRelMap().lookUp(pReloc); 70137b74a387bb3993387029859c2d9d051c41c724eStephen Hines bool has_dyn_rel = (rel_entry != NULL); 702f7ac0f19a1c8d0ad14bcf6456ce368b830fea886Stephen Hines 70387f34658dec9097d987d254a990ea7f311bfc95fStephen Hines // if the flag of target section is not ALLOC, we eprform only static 70487f34658dec9097d987d254a990ea7f311bfc95fStephen Hines // relocation. 70587f34658dec9097d987d254a990ea7f311bfc95fStephen Hines if (0 == (llvm::ELF::SHF_ALLOC & 70687f34658dec9097d987d254a990ea7f311bfc95fStephen Hines pReloc.targetRef().frag()->getParent()->getSection().flag())) { 70787f34658dec9097d987d254a990ea7f311bfc95fStephen Hines return applyAbs(pReloc); 708f7ac0f19a1c8d0ad14bcf6456ce368b830fea886Stephen Hines } 709f7ac0f19a1c8d0ad14bcf6456ce368b830fea886Stephen Hines 71087f34658dec9097d987d254a990ea7f311bfc95fStephen Hines // a local symbol with .rela type relocation 71187f34658dec9097d987d254a990ea7f311bfc95fStephen Hines if (rsym->isLocal() && has_dyn_rel) { 71287f34658dec9097d987d254a990ea7f311bfc95fStephen Hines rel_entry->setAddend(S + A); 713551ae4ebd3e9d137ea668fb83ae4a55b8cfba451Stephen Hines return Relocator::OK; 714f7ac0f19a1c8d0ad14bcf6456ce368b830fea886Stephen Hines } 7156f75755c9204b1d8817ae5a65a2f7e5af0ec3f70Stephen Hines 71687f34658dec9097d987d254a990ea7f311bfc95fStephen Hines if (!rsym->isLocal()) { 71787f34658dec9097d987d254a990ea7f311bfc95fStephen Hines if (rsym->reserved() & HexagonRelocator::ReservePLT) { 71887f34658dec9097d987d254a990ea7f311bfc95fStephen Hines S = helper_get_PLT_address(*rsym, pParent); 71987f34658dec9097d987d254a990ea7f311bfc95fStephen Hines } 720f7ac0f19a1c8d0ad14bcf6456ce368b830fea886Stephen Hines 72187f34658dec9097d987d254a990ea7f311bfc95fStephen Hines if (has_dyn_rel) { 72287f34658dec9097d987d254a990ea7f311bfc95fStephen Hines if (llvm::ELF::R_HEX_32 == pReloc.type() && 72387f34658dec9097d987d254a990ea7f311bfc95fStephen Hines helper_use_relative_reloc(*rsym, pParent)) { 72487f34658dec9097d987d254a990ea7f311bfc95fStephen Hines rel_entry->setAddend(S + A); 72587f34658dec9097d987d254a990ea7f311bfc95fStephen Hines } else { 72687f34658dec9097d987d254a990ea7f311bfc95fStephen Hines rel_entry->setAddend(A); 727551ae4ebd3e9d137ea668fb83ae4a55b8cfba451Stephen Hines return Relocator::OK; 72887f34658dec9097d987d254a990ea7f311bfc95fStephen Hines } 72987f34658dec9097d987d254a990ea7f311bfc95fStephen Hines } 730f7ac0f19a1c8d0ad14bcf6456ce368b830fea886Stephen Hines } 731f7ac0f19a1c8d0ad14bcf6456ce368b830fea886Stephen Hines 73287f34658dec9097d987d254a990ea7f311bfc95fStephen Hines return applyAbs(pReloc); 733f7ac0f19a1c8d0ad14bcf6456ce368b830fea886Stephen Hines} 734f7ac0f19a1c8d0ad14bcf6456ce368b830fea886Stephen Hines 73537b74a387bb3993387029859c2d9d051c41c724eStephen HinesRelocator::Result relocPCREL(Relocation& pReloc, HexagonRelocator& pParent) { 73637b74a387bb3993387029859c2d9d051c41c724eStephen Hines ResolveInfo* rsym = pReloc.symInfo(); 73787f34658dec9097d987d254a990ea7f311bfc95fStephen Hines int64_t result; 7386f75755c9204b1d8817ae5a65a2f7e5af0ec3f70Stephen Hines 739551ae4ebd3e9d137ea668fb83ae4a55b8cfba451Stephen Hines Relocator::Address S = pReloc.symValue(); 740551ae4ebd3e9d137ea668fb83ae4a55b8cfba451Stephen Hines Relocator::DWord A = pReloc.addend(); 741551ae4ebd3e9d137ea668fb83ae4a55b8cfba451Stephen Hines Relocator::DWord P = pReloc.place(); 7426f75755c9204b1d8817ae5a65a2f7e5af0ec3f70Stephen Hines 74337b74a387bb3993387029859c2d9d051c41c724eStephen Hines FragmentRef& target_fragref = pReloc.targetRef(); 74437b74a387bb3993387029859c2d9d051c41c724eStephen Hines Fragment* target_frag = target_fragref.frag(); 74537b74a387bb3993387029859c2d9d051c41c724eStephen Hines LDSection& target_sect = target_frag->getParent()->getSection(); 7466f75755c9204b1d8817ae5a65a2f7e5af0ec3f70Stephen Hines 74787f34658dec9097d987d254a990ea7f311bfc95fStephen Hines result = (int64_t)(S + A - P); 748f7ac0f19a1c8d0ad14bcf6456ce368b830fea886Stephen Hines 74987f34658dec9097d987d254a990ea7f311bfc95fStephen Hines // for relocs inside non ALLOC, just apply 75037b74a387bb3993387029859c2d9d051c41c724eStephen Hines if ((llvm::ELF::SHF_ALLOC & target_sect.flag()) == 0) { 75187f34658dec9097d987d254a990ea7f311bfc95fStephen Hines return applyRel(pReloc, result); 7526f75755c9204b1d8817ae5a65a2f7e5af0ec3f70Stephen Hines } 753f7ac0f19a1c8d0ad14bcf6456ce368b830fea886Stephen Hines 75487f34658dec9097d987d254a990ea7f311bfc95fStephen Hines if (!rsym->isLocal()) { 75587f34658dec9097d987d254a990ea7f311bfc95fStephen Hines if (rsym->reserved() & HexagonRelocator::ReservePLT) { 75687f34658dec9097d987d254a990ea7f311bfc95fStephen Hines S = helper_get_PLT_address(*rsym, pParent); 75787f34658dec9097d987d254a990ea7f311bfc95fStephen Hines result = (int64_t)(S + A - P); 75887f34658dec9097d987d254a990ea7f311bfc95fStephen Hines applyRel(pReloc, result); 759551ae4ebd3e9d137ea668fb83ae4a55b8cfba451Stephen Hines return Relocator::OK; 76087f34658dec9097d987d254a990ea7f311bfc95fStephen Hines } 761f7ac0f19a1c8d0ad14bcf6456ce368b830fea886Stephen Hines } 762f7ac0f19a1c8d0ad14bcf6456ce368b830fea886Stephen Hines 76387f34658dec9097d987d254a990ea7f311bfc95fStephen Hines return applyRel(pReloc, result); 7646f75755c9204b1d8817ae5a65a2f7e5af0ec3f70Stephen Hines} 7656f75755c9204b1d8817ae5a65a2f7e5af0ec3f70Stephen Hines 76687f34658dec9097d987d254a990ea7f311bfc95fStephen Hines// R_HEX_GPREL16_0 and its class : Unsigned Verify 76737b74a387bb3993387029859c2d9d051c41c724eStephen HinesRelocator::Result relocGPREL(Relocation& pReloc, HexagonRelocator& pParent) { 768551ae4ebd3e9d137ea668fb83ae4a55b8cfba451Stephen Hines Relocator::Address S = pReloc.symValue(); 769551ae4ebd3e9d137ea668fb83ae4a55b8cfba451Stephen Hines Relocator::DWord A = pReloc.addend(); 770551ae4ebd3e9d137ea668fb83ae4a55b8cfba451Stephen Hines Relocator::DWord GP = pParent.getTarget().getGP(); 77187f34658dec9097d987d254a990ea7f311bfc95fStephen Hines 77287f34658dec9097d987d254a990ea7f311bfc95fStephen Hines uint32_t result = (uint32_t)(S + A - GP); 77387f34658dec9097d987d254a990ea7f311bfc95fStephen Hines uint32_t shift = 0; 77487f34658dec9097d987d254a990ea7f311bfc95fStephen Hines uint32_t alignment = 1; 77587f34658dec9097d987d254a990ea7f311bfc95fStephen Hines 77687f34658dec9097d987d254a990ea7f311bfc95fStephen Hines switch (pReloc.type()) { 77737b74a387bb3993387029859c2d9d051c41c724eStephen Hines case llvm::ELF::R_HEX_GPREL16_0: 77837b74a387bb3993387029859c2d9d051c41c724eStephen Hines break; 77937b74a387bb3993387029859c2d9d051c41c724eStephen Hines 78037b74a387bb3993387029859c2d9d051c41c724eStephen Hines case llvm::ELF::R_HEX_GPREL16_1: 78137b74a387bb3993387029859c2d9d051c41c724eStephen Hines shift = 1; 78237b74a387bb3993387029859c2d9d051c41c724eStephen Hines alignment = 2; 78337b74a387bb3993387029859c2d9d051c41c724eStephen Hines break; 78437b74a387bb3993387029859c2d9d051c41c724eStephen Hines 78537b74a387bb3993387029859c2d9d051c41c724eStephen Hines case llvm::ELF::R_HEX_GPREL16_2: 78637b74a387bb3993387029859c2d9d051c41c724eStephen Hines shift = 2; 78737b74a387bb3993387029859c2d9d051c41c724eStephen Hines alignment = 4; 78837b74a387bb3993387029859c2d9d051c41c724eStephen Hines break; 78937b74a387bb3993387029859c2d9d051c41c724eStephen Hines 79037b74a387bb3993387029859c2d9d051c41c724eStephen Hines case llvm::ELF::R_HEX_GPREL16_3: 79137b74a387bb3993387029859c2d9d051c41c724eStephen Hines shift = 3; 79237b74a387bb3993387029859c2d9d051c41c724eStephen Hines alignment = 8; 79337b74a387bb3993387029859c2d9d051c41c724eStephen Hines break; 79437b74a387bb3993387029859c2d9d051c41c724eStephen Hines 79537b74a387bb3993387029859c2d9d051c41c724eStephen Hines default: 79637b74a387bb3993387029859c2d9d051c41c724eStephen Hines // show proper error 79737b74a387bb3993387029859c2d9d051c41c724eStephen Hines fatal(diag::unsupported_relocation) << static_cast<int>(pReloc.type()) 79837b74a387bb3993387029859c2d9d051c41c724eStephen Hines << "mclinker@googlegroups.com"; 799f7ac0f19a1c8d0ad14bcf6456ce368b830fea886Stephen Hines } 800f7ac0f19a1c8d0ad14bcf6456ce368b830fea886Stephen Hines 80187f34658dec9097d987d254a990ea7f311bfc95fStephen Hines uint32_t range = 1 << 16; 802f7ac0f19a1c8d0ad14bcf6456ce368b830fea886Stephen Hines uint32_t bitMask = FINDBITMASK(pReloc.target()); 803f7ac0f19a1c8d0ad14bcf6456ce368b830fea886Stephen Hines 80487f34658dec9097d987d254a990ea7f311bfc95fStephen Hines if ((shift != 0) && (result % alignment != 0)) 805551ae4ebd3e9d137ea668fb83ae4a55b8cfba451Stephen Hines return Relocator::BadReloc; 8066f75755c9204b1d8817ae5a65a2f7e5af0ec3f70Stephen Hines 80787f34658dec9097d987d254a990ea7f311bfc95fStephen Hines result >>= shift; 8086f75755c9204b1d8817ae5a65a2f7e5af0ec3f70Stephen Hines 80987f34658dec9097d987d254a990ea7f311bfc95fStephen Hines if (result < range - 1) { 81087f34658dec9097d987d254a990ea7f311bfc95fStephen Hines pReloc.target() |= ApplyMask<uint32_t>(bitMask, result); 811551ae4ebd3e9d137ea668fb83ae4a55b8cfba451Stephen Hines return Relocator::OK; 8126f75755c9204b1d8817ae5a65a2f7e5af0ec3f70Stephen Hines } 813551ae4ebd3e9d137ea668fb83ae4a55b8cfba451Stephen Hines return Relocator::Overflow; 8146f75755c9204b1d8817ae5a65a2f7e5af0ec3f70Stephen Hines} 815f7ac0f19a1c8d0ad14bcf6456ce368b830fea886Stephen Hines 816f7ac0f19a1c8d0ad14bcf6456ce368b830fea886Stephen Hines// R_HEX_PLT_B22_PCREL: PLT(S) + A - P 81737b74a387bb3993387029859c2d9d051c41c724eStephen HinesRelocator::Result relocPLTB22PCREL(Relocation& pReloc, 81837b74a387bb3993387029859c2d9d051c41c724eStephen Hines HexagonRelocator& pParent) { 819f7ac0f19a1c8d0ad14bcf6456ce368b830fea886Stephen Hines // PLT_S depends on if there is a PLT entry. 820551ae4ebd3e9d137ea668fb83ae4a55b8cfba451Stephen Hines Relocator::Address PLT_S; 821f7ac0f19a1c8d0ad14bcf6456ce368b830fea886Stephen Hines if ((pReloc.symInfo()->reserved() & HexagonRelocator::ReservePLT)) 82287f34658dec9097d987d254a990ea7f311bfc95fStephen Hines PLT_S = helper_get_PLT_address(*pReloc.symInfo(), pParent); 823f7ac0f19a1c8d0ad14bcf6456ce368b830fea886Stephen Hines else 824f7ac0f19a1c8d0ad14bcf6456ce368b830fea886Stephen Hines PLT_S = pReloc.symValue(); 825551ae4ebd3e9d137ea668fb83ae4a55b8cfba451Stephen Hines Relocator::Address P = pReloc.place(); 826f7ac0f19a1c8d0ad14bcf6456ce368b830fea886Stephen Hines uint32_t bitMask = FINDBITMASK(pReloc.target()); 827f7ac0f19a1c8d0ad14bcf6456ce368b830fea886Stephen Hines uint32_t result = (PLT_S + pReloc.addend() - P) >> 2; 828f7ac0f19a1c8d0ad14bcf6456ce368b830fea886Stephen Hines pReloc.target() = pReloc.target() | ApplyMask<uint32_t>(bitMask, result); 829551ae4ebd3e9d137ea668fb83ae4a55b8cfba451Stephen Hines return Relocator::OK; 830f7ac0f19a1c8d0ad14bcf6456ce368b830fea886Stephen Hines} 831f7ac0f19a1c8d0ad14bcf6456ce368b830fea886Stephen Hines 83237b74a387bb3993387029859c2d9d051c41c724eStephen Hines// R_HEX_GOT_LO16 and its class : (G) Signed Truncate 83337b74a387bb3993387029859c2d9d051c41c724eStephen Hines// Exception: R_HEX_GOT_16(_X): signed verify 83487f34658dec9097d987d254a990ea7f311bfc95fStephen Hines// Exception: R_HEX_GOT_11_X : unsigned truncate 83537b74a387bb3993387029859c2d9d051c41c724eStephen HinesRelocator::Result relocGOT(Relocation& pReloc, HexagonRelocator& pParent) { 83687f34658dec9097d987d254a990ea7f311bfc95fStephen Hines if (!(pReloc.symInfo()->reserved() & HexagonRelocator::ReserveGOT)) { 837551ae4ebd3e9d137ea668fb83ae4a55b8cfba451Stephen Hines return Relocator::BadReloc; 83887f34658dec9097d987d254a990ea7f311bfc95fStephen Hines } 839f7ac0f19a1c8d0ad14bcf6456ce368b830fea886Stephen Hines 84087f34658dec9097d987d254a990ea7f311bfc95fStephen Hines // set got entry value if needed 84137b74a387bb3993387029859c2d9d051c41c724eStephen Hines HexagonGOTEntry* got_entry = pParent.getSymGOTMap().lookUp(*pReloc.symInfo()); 84237b74a387bb3993387029859c2d9d051c41c724eStephen Hines assert(got_entry != NULL); 84387f34658dec9097d987d254a990ea7f311bfc95fStephen Hines if (HexagonRelocator::SymVal == got_entry->getValue()) 84487f34658dec9097d987d254a990ea7f311bfc95fStephen Hines got_entry->setValue(pReloc.symValue()); 845f7ac0f19a1c8d0ad14bcf6456ce368b830fea886Stephen Hines 84637b74a387bb3993387029859c2d9d051c41c724eStephen Hines Relocator::Address GOT_S = helper_get_GOT_address(*pReloc.symInfo(), pParent); 847551ae4ebd3e9d137ea668fb83ae4a55b8cfba451Stephen Hines Relocator::Address GOT = pParent.getTarget().getGOTSymbolAddr(); 84887f34658dec9097d987d254a990ea7f311bfc95fStephen Hines int32_t result = (int32_t)(GOT_S - GOT); 84987f34658dec9097d987d254a990ea7f311bfc95fStephen Hines uint32_t effectiveBits = 0; 85087f34658dec9097d987d254a990ea7f311bfc95fStephen Hines uint32_t alignment = 1; 85187f34658dec9097d987d254a990ea7f311bfc95fStephen Hines uint32_t bitMask = 0; 85287f34658dec9097d987d254a990ea7f311bfc95fStephen Hines uint32_t result_u; 85387f34658dec9097d987d254a990ea7f311bfc95fStephen Hines uint32_t shift = 0; 85487f34658dec9097d987d254a990ea7f311bfc95fStephen Hines 85587f34658dec9097d987d254a990ea7f311bfc95fStephen Hines switch (pReloc.type()) { 85637b74a387bb3993387029859c2d9d051c41c724eStephen Hines case llvm::ELF::R_HEX_GOT_LO16: 85737b74a387bb3993387029859c2d9d051c41c724eStephen Hines bitMask = 0x00c03fff; 85837b74a387bb3993387029859c2d9d051c41c724eStephen Hines break; 85937b74a387bb3993387029859c2d9d051c41c724eStephen Hines 86037b74a387bb3993387029859c2d9d051c41c724eStephen Hines case llvm::ELF::R_HEX_GOT_HI16: 86137b74a387bb3993387029859c2d9d051c41c724eStephen Hines bitMask = 0x00c03fff; 86237b74a387bb3993387029859c2d9d051c41c724eStephen Hines shift = 16; 86337b74a387bb3993387029859c2d9d051c41c724eStephen Hines alignment = 4; 86437b74a387bb3993387029859c2d9d051c41c724eStephen Hines break; 86537b74a387bb3993387029859c2d9d051c41c724eStephen Hines 86637b74a387bb3993387029859c2d9d051c41c724eStephen Hines case llvm::ELF::R_HEX_GOT_32: 86737b74a387bb3993387029859c2d9d051c41c724eStephen Hines bitMask = 0xffffffff; 86837b74a387bb3993387029859c2d9d051c41c724eStephen Hines break; 86937b74a387bb3993387029859c2d9d051c41c724eStephen Hines 87037b74a387bb3993387029859c2d9d051c41c724eStephen Hines case llvm::ELF::R_HEX_GOT_16: 87137b74a387bb3993387029859c2d9d051c41c724eStephen Hines bitMask = FINDBITMASK(pReloc.target()); 87237b74a387bb3993387029859c2d9d051c41c724eStephen Hines effectiveBits = 16; 87337b74a387bb3993387029859c2d9d051c41c724eStephen Hines break; 87437b74a387bb3993387029859c2d9d051c41c724eStephen Hines 87537b74a387bb3993387029859c2d9d051c41c724eStephen Hines case llvm::ELF::R_HEX_GOT_32_6_X: 87637b74a387bb3993387029859c2d9d051c41c724eStephen Hines bitMask = 0xfff3fff; 87737b74a387bb3993387029859c2d9d051c41c724eStephen Hines shift = 6; 87837b74a387bb3993387029859c2d9d051c41c724eStephen Hines break; 87937b74a387bb3993387029859c2d9d051c41c724eStephen Hines 88037b74a387bb3993387029859c2d9d051c41c724eStephen Hines case llvm::ELF::R_HEX_GOT_16_X: 88137b74a387bb3993387029859c2d9d051c41c724eStephen Hines bitMask = FINDBITMASK(pReloc.target()); 88237b74a387bb3993387029859c2d9d051c41c724eStephen Hines effectiveBits = 6; 88337b74a387bb3993387029859c2d9d051c41c724eStephen Hines break; 88437b74a387bb3993387029859c2d9d051c41c724eStephen Hines 88537b74a387bb3993387029859c2d9d051c41c724eStephen Hines case llvm::ELF::R_HEX_GOT_11_X: 88637b74a387bb3993387029859c2d9d051c41c724eStephen Hines bitMask = FINDBITMASK(pReloc.target()); 88737b74a387bb3993387029859c2d9d051c41c724eStephen Hines result_u = GOT_S - GOT; 88837b74a387bb3993387029859c2d9d051c41c724eStephen Hines pReloc.target() |= ApplyMask<uint32_t>(bitMask, result_u); 88937b74a387bb3993387029859c2d9d051c41c724eStephen Hines return Relocator::OK; 890f7ac0f19a1c8d0ad14bcf6456ce368b830fea886Stephen Hines 89137b74a387bb3993387029859c2d9d051c41c724eStephen Hines default: 89237b74a387bb3993387029859c2d9d051c41c724eStephen Hines // show proper error 89337b74a387bb3993387029859c2d9d051c41c724eStephen Hines fatal(diag::unsupported_relocation) << static_cast<int>(pReloc.type()) 89437b74a387bb3993387029859c2d9d051c41c724eStephen Hines << "mclinker@googlegroups.com"; 89587f34658dec9097d987d254a990ea7f311bfc95fStephen Hines } 896f7ac0f19a1c8d0ad14bcf6456ce368b830fea886Stephen Hines 89787f34658dec9097d987d254a990ea7f311bfc95fStephen Hines if ((shift != 0) && (result % alignment != 0)) 898551ae4ebd3e9d137ea668fb83ae4a55b8cfba451Stephen Hines return Relocator::BadReloc; 899f7ac0f19a1c8d0ad14bcf6456ce368b830fea886Stephen Hines 90087f34658dec9097d987d254a990ea7f311bfc95fStephen Hines result >>= shift; 901f7ac0f19a1c8d0ad14bcf6456ce368b830fea886Stephen Hines 90287f34658dec9097d987d254a990ea7f311bfc95fStephen Hines if (effectiveBits) { 90387f34658dec9097d987d254a990ea7f311bfc95fStephen Hines int32_t range = 1 << (effectiveBits - 1); 90487f34658dec9097d987d254a990ea7f311bfc95fStephen Hines if ((result > range - 1) || (result < -range)) 905551ae4ebd3e9d137ea668fb83ae4a55b8cfba451Stephen Hines return Relocator::Overflow; 90687f34658dec9097d987d254a990ea7f311bfc95fStephen Hines } 90787f34658dec9097d987d254a990ea7f311bfc95fStephen Hines pReloc.target() |= ApplyMask<int32_t>(bitMask, result); 908551ae4ebd3e9d137ea668fb83ae4a55b8cfba451Stephen Hines return Relocator::OK; 909f7ac0f19a1c8d0ad14bcf6456ce368b830fea886Stephen Hines} 910f7ac0f19a1c8d0ad14bcf6456ce368b830fea886Stephen Hines 91187f34658dec9097d987d254a990ea7f311bfc95fStephen Hines// R_HEX_GOTREL_LO16: and its class of relocs 91287f34658dec9097d987d254a990ea7f311bfc95fStephen Hines// (S + A - GOT) : Signed Truncate 91337b74a387bb3993387029859c2d9d051c41c724eStephen HinesRelocator::Result relocGOTREL(Relocation& pReloc, HexagonRelocator& pParent) { 914551ae4ebd3e9d137ea668fb83ae4a55b8cfba451Stephen Hines Relocator::Address S = pReloc.symValue(); 915551ae4ebd3e9d137ea668fb83ae4a55b8cfba451Stephen Hines Relocator::DWord A = pReloc.addend(); 916551ae4ebd3e9d137ea668fb83ae4a55b8cfba451Stephen Hines Relocator::Address GOT = pParent.getTarget().getGOTSymbolAddr(); 917f7ac0f19a1c8d0ad14bcf6456ce368b830fea886Stephen Hines 91887f34658dec9097d987d254a990ea7f311bfc95fStephen Hines uint32_t bitMask = 0; 91987f34658dec9097d987d254a990ea7f311bfc95fStephen Hines uint32_t alignment = 1; 92087f34658dec9097d987d254a990ea7f311bfc95fStephen Hines uint32_t shift = 0; 92187f34658dec9097d987d254a990ea7f311bfc95fStephen Hines 92287f34658dec9097d987d254a990ea7f311bfc95fStephen Hines uint32_t result = (uint32_t)(S + A - GOT); 92387f34658dec9097d987d254a990ea7f311bfc95fStephen Hines 92487f34658dec9097d987d254a990ea7f311bfc95fStephen Hines switch (pReloc.type()) { 92537b74a387bb3993387029859c2d9d051c41c724eStephen Hines case llvm::ELF::R_HEX_GOTREL_LO16: 92637b74a387bb3993387029859c2d9d051c41c724eStephen Hines bitMask = 0x00c03fff; 92737b74a387bb3993387029859c2d9d051c41c724eStephen Hines break; 92837b74a387bb3993387029859c2d9d051c41c724eStephen Hines 92937b74a387bb3993387029859c2d9d051c41c724eStephen Hines case llvm::ELF::R_HEX_GOTREL_HI16: 93037b74a387bb3993387029859c2d9d051c41c724eStephen Hines bitMask = 0x00c03fff; 93137b74a387bb3993387029859c2d9d051c41c724eStephen Hines shift = 16; 93237b74a387bb3993387029859c2d9d051c41c724eStephen Hines alignment = 4; 93337b74a387bb3993387029859c2d9d051c41c724eStephen Hines break; 93437b74a387bb3993387029859c2d9d051c41c724eStephen Hines 93537b74a387bb3993387029859c2d9d051c41c724eStephen Hines case llvm::ELF::R_HEX_GOTREL_32: 93637b74a387bb3993387029859c2d9d051c41c724eStephen Hines bitMask = 0xffffffff; 93737b74a387bb3993387029859c2d9d051c41c724eStephen Hines break; 93837b74a387bb3993387029859c2d9d051c41c724eStephen Hines 93937b74a387bb3993387029859c2d9d051c41c724eStephen Hines case llvm::ELF::R_HEX_GOTREL_32_6_X: 94037b74a387bb3993387029859c2d9d051c41c724eStephen Hines bitMask = 0x0fff3fff; 94137b74a387bb3993387029859c2d9d051c41c724eStephen Hines shift = 6; 94237b74a387bb3993387029859c2d9d051c41c724eStephen Hines break; 94337b74a387bb3993387029859c2d9d051c41c724eStephen Hines 94437b74a387bb3993387029859c2d9d051c41c724eStephen Hines case llvm::ELF::R_HEX_GOTREL_16_X: 94537b74a387bb3993387029859c2d9d051c41c724eStephen Hines case llvm::ELF::R_HEX_GOTREL_11_X: 94637b74a387bb3993387029859c2d9d051c41c724eStephen Hines bitMask = FINDBITMASK(pReloc.target()); 94737b74a387bb3993387029859c2d9d051c41c724eStephen Hines break; 94837b74a387bb3993387029859c2d9d051c41c724eStephen Hines 94937b74a387bb3993387029859c2d9d051c41c724eStephen Hines default: 95037b74a387bb3993387029859c2d9d051c41c724eStephen Hines // show proper error 95137b74a387bb3993387029859c2d9d051c41c724eStephen Hines fatal(diag::unsupported_relocation) << static_cast<int>(pReloc.type()) 95237b74a387bb3993387029859c2d9d051c41c724eStephen Hines << "mclinker@googlegroups.com"; 953f7ac0f19a1c8d0ad14bcf6456ce368b830fea886Stephen Hines } 954f7ac0f19a1c8d0ad14bcf6456ce368b830fea886Stephen Hines 95587f34658dec9097d987d254a990ea7f311bfc95fStephen Hines if (result % alignment != 0) 956551ae4ebd3e9d137ea668fb83ae4a55b8cfba451Stephen Hines return Relocator::BadReloc; 95787f34658dec9097d987d254a990ea7f311bfc95fStephen Hines 95887f34658dec9097d987d254a990ea7f311bfc95fStephen Hines result >>= shift; 95987f34658dec9097d987d254a990ea7f311bfc95fStephen Hines 96087f34658dec9097d987d254a990ea7f311bfc95fStephen Hines pReloc.target() |= ApplyMask<uint32_t>(bitMask, result); 961551ae4ebd3e9d137ea668fb83ae4a55b8cfba451Stephen Hines return Relocator::OK; 962f7ac0f19a1c8d0ad14bcf6456ce368b830fea886Stephen Hines} 963f7ac0f19a1c8d0ad14bcf6456ce368b830fea886Stephen Hines 96437b74a387bb3993387029859c2d9d051c41c724eStephen HinesRelocator::Result unsupported(Relocation& pReloc, HexagonRelocator& pParent) { 96537b74a387bb3993387029859c2d9d051c41c724eStephen Hines return Relocator::Unsupported; 966f7ac0f19a1c8d0ad14bcf6456ce368b830fea886Stephen Hines} 96737b74a387bb3993387029859c2d9d051c41c724eStephen Hines 96837b74a387bb3993387029859c2d9d051c41c724eStephen Hines} // namespace mcld 969