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llvm-objdump: Split printCOFFUnwindInfo into small functions.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@202772 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Rui Ueyama
parent
839b3c76d3
commit
d1a0a58701
@ -378,27 +378,20 @@ static void printExportTable(const COFFObjectFile *Obj) {
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}
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}
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void llvm::printCOFFUnwindInfo(const COFFObjectFile *Obj) {
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const coff_file_header *Header;
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if (error(Obj->getCOFFHeader(Header))) return;
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if (Header->Machine != COFF::IMAGE_FILE_MACHINE_AMD64) {
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errs() << "Unsupported image machine type "
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"(currently only AMD64 is supported).\n";
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return;
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}
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const coff_section *Pdata = 0;
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// Given the COFF object file, this function returns the relocations for .pdata
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// and the pointer to "runtime function" structs.
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static bool getPDataSection(const COFFObjectFile *Obj,
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std::vector<RelocationRef> &Rels,
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const RuntimeFunction *&RFStart, int &NumRFs) {
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for (section_iterator SI = Obj->section_begin(), SE = Obj->section_end();
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SI != SE; ++SI) {
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StringRef Name;
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if (error(SI->getName(Name))) continue;
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if (error(SI->getName(Name)))
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continue;
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if (Name != ".pdata")
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continue;
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if (Name != ".pdata") continue;
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Pdata = Obj->getCOFFSection(SI);
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std::vector<RelocationRef> Rels;
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const coff_section *Pdata = Obj->getCOFFSection(SI);
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for (relocation_iterator RI = SI->relocation_begin(),
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RE = SI->relocation_end();
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RI != RE; ++RI)
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@ -408,98 +401,123 @@ void llvm::printCOFFUnwindInfo(const COFFObjectFile *Obj) {
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std::sort(Rels.begin(), Rels.end(), RelocAddressLess);
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ArrayRef<uint8_t> Contents;
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if (error(Obj->getSectionContents(Pdata, Contents))) continue;
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if (Contents.empty()) continue;
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if (error(Obj->getSectionContents(Pdata, Contents)))
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continue;
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if (Contents.empty())
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continue;
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ArrayRef<RuntimeFunction> RFs(
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reinterpret_cast<const RuntimeFunction *>(Contents.data()),
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Contents.size() / sizeof(RuntimeFunction));
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for (const RuntimeFunction &RF : RFs) {
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const uint64_t SectionOffset =
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std::distance(RFs.begin(), &RF) * sizeof(RuntimeFunction);
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RFStart = reinterpret_cast<const RuntimeFunction *>(Contents.data());
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NumRFs = Contents.size() / sizeof(RuntimeFunction);
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return true;
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}
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return false;
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}
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outs() << "Function Table:\n";
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static void printRuntimeFunction(const COFFObjectFile *Obj,
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const RuntimeFunction &RF,
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uint64_t SectionOffset,
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const std::vector<RelocationRef> &Rels) {
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outs() << "Function Table:\n";
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outs() << " Start Address: ";
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printCOFFSymbolAddress(outs(), Rels,
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SectionOffset +
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/*offsetof(RuntimeFunction, StartAddress)*/ 0,
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RF.StartAddress);
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outs() << "\n";
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outs() << " Start Address: ";
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printCOFFSymbolAddress(outs(), Rels,
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SectionOffset +
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/*offsetof(RuntimeFunction, StartAddress)*/ 0,
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RF.StartAddress);
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outs() << "\n";
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outs() << " End Address: ";
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printCOFFSymbolAddress(outs(), Rels,
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SectionOffset +
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/*offsetof(RuntimeFunction, EndAddress)*/ 4,
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RF.EndAddress);
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outs() << "\n";
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outs() << " End Address: ";
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printCOFFSymbolAddress(outs(), Rels,
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SectionOffset +
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/*offsetof(RuntimeFunction, EndAddress)*/ 4,
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RF.EndAddress);
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outs() << "\n";
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outs() << " Unwind Info Address: ";
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printCOFFSymbolAddress(
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outs(), Rels, SectionOffset +
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/*offsetof(RuntimeFunction, UnwindInfoOffset)*/ 8,
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RF.UnwindInfoOffset);
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outs() << "\n";
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outs() << " Unwind Info Address: ";
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printCOFFSymbolAddress(outs(), Rels,
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SectionOffset +
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/*offsetof(RuntimeFunction, UnwindInfoOffset)*/ 8,
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RF.UnwindInfoOffset);
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outs() << "\n";
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ArrayRef<uint8_t> XContents;
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uint64_t UnwindInfoOffset = 0;
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if (error(getSectionContents(Obj, Rels, SectionOffset +
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/*offsetof(RuntimeFunction, UnwindInfoOffset)*/ 8,
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XContents, UnwindInfoOffset))) continue;
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if (XContents.empty()) continue;
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ArrayRef<uint8_t> XContents;
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uint64_t UnwindInfoOffset = 0;
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if (error(getSectionContents(
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Obj, Rels, SectionOffset +
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/*offsetof(RuntimeFunction, UnwindInfoOffset)*/ 8,
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XContents, UnwindInfoOffset)))
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return;
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if (XContents.empty())
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return;
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UnwindInfoOffset += RF.UnwindInfoOffset;
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if (UnwindInfoOffset > XContents.size())
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continue;
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UnwindInfoOffset += RF.UnwindInfoOffset;
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if (UnwindInfoOffset > XContents.size())
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return;
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const Win64EH::UnwindInfo *UI =
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reinterpret_cast<const Win64EH::UnwindInfo *>
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(XContents.data() + UnwindInfoOffset);
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const Win64EH::UnwindInfo *UI = reinterpret_cast<const Win64EH::UnwindInfo *>(
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XContents.data() + UnwindInfoOffset);
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// The casts to int are required in order to output the value as number.
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// Without the casts the value would be interpreted as char data (which
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// results in garbage output).
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outs() << " Version: " << static_cast<int>(UI->getVersion()) << "\n";
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outs() << " Flags: " << static_cast<int>(UI->getFlags());
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if (UI->getFlags()) {
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if (UI->getFlags() & UNW_ExceptionHandler)
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outs() << " UNW_ExceptionHandler";
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if (UI->getFlags() & UNW_TerminateHandler)
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outs() << " UNW_TerminateHandler";
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if (UI->getFlags() & UNW_ChainInfo)
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outs() << " UNW_ChainInfo";
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}
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outs() << "\n";
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outs() << " Size of prolog: "
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<< static_cast<int>(UI->PrologSize) << "\n";
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outs() << " Number of Codes: "
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<< static_cast<int>(UI->NumCodes) << "\n";
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// Maybe this should move to output of UOP_SetFPReg?
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if (UI->getFrameRegister()) {
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outs() << " Frame register: "
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<< getUnwindRegisterName(UI->getFrameRegister())
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<< "\n";
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outs() << " Frame offset: "
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<< 16 * UI->getFrameOffset()
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<< "\n";
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} else {
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outs() << " No frame pointer used\n";
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}
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if (UI->getFlags() & (UNW_ExceptionHandler | UNW_TerminateHandler)) {
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// FIXME: Output exception handler data
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} else if (UI->getFlags() & UNW_ChainInfo) {
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// FIXME: Output chained unwind info
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}
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// The casts to int are required in order to output the value as number.
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// Without the casts the value would be interpreted as char data (which
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// results in garbage output).
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outs() << " Version: " << static_cast<int>(UI->getVersion()) << "\n";
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outs() << " Flags: " << static_cast<int>(UI->getFlags());
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if (UI->getFlags()) {
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if (UI->getFlags() & UNW_ExceptionHandler)
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outs() << " UNW_ExceptionHandler";
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if (UI->getFlags() & UNW_TerminateHandler)
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outs() << " UNW_TerminateHandler";
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if (UI->getFlags() & UNW_ChainInfo)
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outs() << " UNW_ChainInfo";
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}
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outs() << "\n";
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outs() << " Size of prolog: " << static_cast<int>(UI->PrologSize) << "\n";
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outs() << " Number of Codes: " << static_cast<int>(UI->NumCodes) << "\n";
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// Maybe this should move to output of UOP_SetFPReg?
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if (UI->getFrameRegister()) {
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outs() << " Frame register: "
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<< getUnwindRegisterName(UI->getFrameRegister()) << "\n";
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outs() << " Frame offset: " << 16 * UI->getFrameOffset() << "\n";
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} else {
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outs() << " No frame pointer used\n";
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}
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if (UI->getFlags() & (UNW_ExceptionHandler | UNW_TerminateHandler)) {
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// FIXME: Output exception handler data
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} else if (UI->getFlags() & UNW_ChainInfo) {
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// FIXME: Output chained unwind info
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}
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if (UI->NumCodes)
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outs() << " Unwind Codes:\n";
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if (UI->NumCodes)
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outs() << " Unwind Codes:\n";
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printAllUnwindCodes(ArrayRef<UnwindCode>(&UI->UnwindCodes[0],
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UI->NumCodes));
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printAllUnwindCodes(ArrayRef<UnwindCode>(&UI->UnwindCodes[0], UI->NumCodes));
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outs() << "\n\n";
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outs().flush();
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}
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outs() << "\n\n";
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outs().flush();
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}
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void llvm::printCOFFUnwindInfo(const COFFObjectFile *Obj) {
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const coff_file_header *Header;
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if (error(Obj->getCOFFHeader(Header)))
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return;
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if (Header->Machine != COFF::IMAGE_FILE_MACHINE_AMD64) {
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errs() << "Unsupported image machine type "
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"(currently only AMD64 is supported).\n";
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return;
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}
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std::vector<RelocationRef> Rels;
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const RuntimeFunction *RFStart;
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int NumRFs;
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if (!getPDataSection(Obj, Rels, RFStart, NumRFs))
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return;
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ArrayRef<RuntimeFunction> RFs(RFStart, NumRFs);
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for (const RuntimeFunction &RF : RFs) {
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uint64_t SectionOffset =
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std::distance(RFs.begin(), &RF) * sizeof(RuntimeFunction);
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printRuntimeFunction(Obj, RF, SectionOffset, Rels);
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}
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}
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