return EC;
if (Ofs == Offset) {
Sym = *I->getSymbol();
- break;
+ return object_error::success;
}
}
- return object_error::success;
+ return object_error::parse_failed;
}
// Given a vector of relocations for a section and an offset into this section
ArrayRef<uint8_t> &Contents,
uint64_t &Addr) {
SymbolRef Sym;
- if (error_code ec = resolveSymbol(Rels, Offset, Sym)) return ec;
+ if (error_code EC = resolveSymbol(Rels, Offset, Sym))
+ return EC;
const coff_section *Section;
if (error_code EC = resolveSectionAndAddress(Obj, Sym, Section, Addr))
return EC;
const std::vector<RelocationRef> &Rels,
uint64_t Offset, uint32_t Disp) {
StringRef Sym;
- if (error_code EC = resolveSymbolName(Rels, Offset, Sym)) {
- error(EC);
- return ;
+ if (!resolveSymbolName(Rels, Offset, Sym)) {
+ Out << Sym;
+ if (Disp > 0)
+ Out << format(" + 0x%04x", Disp);
+ } else {
+ Out << format("0x%04x", Disp);
}
- Out << Sym;
- if (Disp > 0)
- Out << format(" + 0x%04x", Disp);
}
static void
if (error(Obj->getRvaPtr(DataDir->RelativeVirtualAddress, IntPtr)))
return;
- const coff_load_configuration32 *LoadConf =
- reinterpret_cast<const coff_load_configuration32 *>(IntPtr);
-
+ auto *LoadConf = reinterpret_cast<const coff_load_configuration32 *>(IntPtr);
outs() << "Load configuration:"
<< "\n Timestamp: " << LoadConf->TimeDateStamp
<< "\n Major Version: " << LoadConf->MajorVersion
}
}
-void llvm::printCOFFUnwindInfo(const COFFObjectFile *Obj) {
- const coff_file_header *Header;
- if (error(Obj->getCOFFHeader(Header))) return;
-
- if (Header->Machine != COFF::IMAGE_FILE_MACHINE_AMD64) {
- errs() << "Unsupported image machine type "
- "(currently only AMD64 is supported).\n";
- return;
- }
-
- const coff_section *Pdata = 0;
-
+// Given the COFF object file, this function returns the relocations for .pdata
+// and the pointer to "runtime function" structs.
+static bool getPDataSection(const COFFObjectFile *Obj,
+ std::vector<RelocationRef> &Rels,
+ const RuntimeFunction *&RFStart, int &NumRFs) {
for (section_iterator SI = Obj->section_begin(), SE = Obj->section_end();
SI != SE; ++SI) {
StringRef Name;
- if (error(SI->getName(Name))) continue;
-
- if (Name != ".pdata") continue;
+ if (error(SI->getName(Name)))
+ continue;
+ if (Name != ".pdata")
+ continue;
- Pdata = Obj->getCOFFSection(SI);
- std::vector<RelocationRef> Rels;
+ const coff_section *Pdata = Obj->getCOFFSection(SI);
for (relocation_iterator RI = SI->relocation_begin(),
RE = SI->relocation_end();
RI != RE; ++RI)
std::sort(Rels.begin(), Rels.end(), RelocAddressLess);
ArrayRef<uint8_t> Contents;
- if (error(Obj->getSectionContents(Pdata, Contents))) continue;
- if (Contents.empty()) continue;
+ if (error(Obj->getSectionContents(Pdata, Contents)))
+ continue;
+ if (Contents.empty())
+ continue;
+
+ RFStart = reinterpret_cast<const RuntimeFunction *>(Contents.data());
+ NumRFs = Contents.size() / sizeof(RuntimeFunction);
+ return true;
+ }
+ return false;
+}
- ArrayRef<RuntimeFunction> RFs(
- reinterpret_cast<const RuntimeFunction *>(Contents.data()),
- Contents.size() / sizeof(RuntimeFunction));
- for (const RuntimeFunction *I = RFs.begin(), *E = RFs.end(); I < E; ++I) {
- const uint64_t SectionOffset = std::distance(RFs.begin(), I)
- * sizeof(RuntimeFunction);
+static void printWin64EHUnwindInfo(const Win64EH::UnwindInfo *UI) {
+ // The casts to int are required in order to output the value as number.
+ // Without the casts the value would be interpreted as char data (which
+ // results in garbage output).
+ outs() << " Version: " << static_cast<int>(UI->getVersion()) << "\n";
+ outs() << " Flags: " << static_cast<int>(UI->getFlags());
+ if (UI->getFlags()) {
+ if (UI->getFlags() & UNW_ExceptionHandler)
+ outs() << " UNW_ExceptionHandler";
+ if (UI->getFlags() & UNW_TerminateHandler)
+ outs() << " UNW_TerminateHandler";
+ if (UI->getFlags() & UNW_ChainInfo)
+ outs() << " UNW_ChainInfo";
+ }
+ outs() << "\n";
+ outs() << " Size of prolog: " << static_cast<int>(UI->PrologSize) << "\n";
+ outs() << " Number of Codes: " << static_cast<int>(UI->NumCodes) << "\n";
+ // Maybe this should move to output of UOP_SetFPReg?
+ if (UI->getFrameRegister()) {
+ outs() << " Frame register: "
+ << getUnwindRegisterName(UI->getFrameRegister()) << "\n";
+ outs() << " Frame offset: " << 16 * UI->getFrameOffset() << "\n";
+ } else {
+ outs() << " No frame pointer used\n";
+ }
+ if (UI->getFlags() & (UNW_ExceptionHandler | UNW_TerminateHandler)) {
+ // FIXME: Output exception handler data
+ } else if (UI->getFlags() & UNW_ChainInfo) {
+ // FIXME: Output chained unwind info
+ }
+
+ if (UI->NumCodes)
+ outs() << " Unwind Codes:\n";
+
+ printAllUnwindCodes(ArrayRef<UnwindCode>(&UI->UnwindCodes[0], UI->NumCodes));
+
+ outs() << "\n\n";
+ outs().flush();
+}
- outs() << "Function Table:\n";
+/// Prints out the given RuntimeFunction struct for x64, assuming that Obj is
+/// pointing to an executable file.
+static void printRuntimeFunction(const COFFObjectFile *Obj,
+ const RuntimeFunction &RF) {
+ if (!RF.StartAddress)
+ return;
+ outs() << "Function Table:\n"
+ << format(" Start Address: 0x%04x\n", RF.StartAddress)
+ << format(" End Address: 0x%04x\n", RF.EndAddress)
+ << format(" Unwind Info Address: 0x%04x\n\n", RF.UnwindInfoOffset);
+ uintptr_t addr;
+ if (Obj->getRvaPtr(RF.UnwindInfoOffset, addr))
+ return;
+ printWin64EHUnwindInfo(reinterpret_cast<const Win64EH::UnwindInfo *>(addr));
+}
- outs() << " Start Address: ";
- printCOFFSymbolAddress(outs(), Rels, SectionOffset +
+/// Prints out the given RuntimeFunction struct for x64, assuming that Obj is
+/// pointing to an object file. Unlike executable, fields in RuntimeFunction
+/// struct are filled with zeros, but instead there are relocations pointing to
+/// them so that the linker will fill targets' RVAs to the fields at link
+/// time. This function interprets the relocations to find the data to be used
+/// in the resulting executable.
+static void printRuntimeFunctionRels(const COFFObjectFile *Obj,
+ const RuntimeFunction &RF,
+ uint64_t SectionOffset,
+ const std::vector<RelocationRef> &Rels) {
+ outs() << "Function Table:\n";
+ outs() << " Start Address: ";
+ printCOFFSymbolAddress(outs(), Rels,
+ SectionOffset +
/*offsetof(RuntimeFunction, StartAddress)*/ 0,
- I->StartAddress);
- outs() << "\n";
+ RF.StartAddress);
+ outs() << "\n";
- outs() << " End Address: ";
- printCOFFSymbolAddress(outs(), Rels, SectionOffset +
+ outs() << " End Address: ";
+ printCOFFSymbolAddress(outs(), Rels,
+ SectionOffset +
/*offsetof(RuntimeFunction, EndAddress)*/ 4,
- I->EndAddress);
- outs() << "\n";
+ RF.EndAddress);
+ outs() << "\n";
- outs() << " Unwind Info Address: ";
- printCOFFSymbolAddress(outs(), Rels, SectionOffset +
+ outs() << " Unwind Info Address: ";
+ printCOFFSymbolAddress(outs(), Rels,
+ SectionOffset +
/*offsetof(RuntimeFunction, UnwindInfoOffset)*/ 8,
- I->UnwindInfoOffset);
- outs() << "\n";
-
- ArrayRef<uint8_t> XContents;
- uint64_t UnwindInfoOffset = 0;
- if (error(getSectionContents(Obj, Rels, SectionOffset +
- /*offsetof(RuntimeFunction, UnwindInfoOffset)*/ 8,
- XContents, UnwindInfoOffset))) continue;
- if (XContents.empty()) continue;
-
- UnwindInfoOffset += I->UnwindInfoOffset;
- if (UnwindInfoOffset > XContents.size()) continue;
-
- const Win64EH::UnwindInfo *UI =
- reinterpret_cast<const Win64EH::UnwindInfo *>
- (XContents.data() + UnwindInfoOffset);
-
- // The casts to int are required in order to output the value as number.
- // Without the casts the value would be interpreted as char data (which
- // results in garbage output).
- outs() << " Version: " << static_cast<int>(UI->getVersion()) << "\n";
- outs() << " Flags: " << static_cast<int>(UI->getFlags());
- if (UI->getFlags()) {
- if (UI->getFlags() & UNW_ExceptionHandler)
- outs() << " UNW_ExceptionHandler";
- if (UI->getFlags() & UNW_TerminateHandler)
- outs() << " UNW_TerminateHandler";
- if (UI->getFlags() & UNW_ChainInfo)
- outs() << " UNW_ChainInfo";
- }
- outs() << "\n";
- outs() << " Size of prolog: "
- << static_cast<int>(UI->PrologSize) << "\n";
- outs() << " Number of Codes: "
- << static_cast<int>(UI->NumCodes) << "\n";
- // Maybe this should move to output of UOP_SetFPReg?
- if (UI->getFrameRegister()) {
- outs() << " Frame register: "
- << getUnwindRegisterName(UI->getFrameRegister())
- << "\n";
- outs() << " Frame offset: "
- << 16 * UI->getFrameOffset()
- << "\n";
- } else {
- outs() << " No frame pointer used\n";
- }
- if (UI->getFlags() & (UNW_ExceptionHandler | UNW_TerminateHandler)) {
- // FIXME: Output exception handler data
- } else if (UI->getFlags() & UNW_ChainInfo) {
- // FIXME: Output chained unwind info
- }
+ RF.UnwindInfoOffset);
+ outs() << "\n";
+
+ ArrayRef<uint8_t> XContents;
+ uint64_t UnwindInfoOffset = 0;
+ if (error(getSectionContents(
+ Obj, Rels, SectionOffset +
+ /*offsetof(RuntimeFunction, UnwindInfoOffset)*/ 8,
+ XContents, UnwindInfoOffset)))
+ return;
+ if (XContents.empty())
+ return;
- if (UI->NumCodes)
- outs() << " Unwind Codes:\n";
+ UnwindInfoOffset += RF.UnwindInfoOffset;
+ if (UnwindInfoOffset > XContents.size())
+ return;
- printAllUnwindCodes(ArrayRef<UnwindCode>(&UI->UnwindCodes[0],
- UI->NumCodes));
+ auto *UI = reinterpret_cast<const Win64EH::UnwindInfo *>(XContents.data() +
+ UnwindInfoOffset);
+ printWin64EHUnwindInfo(UI);
+}
- outs() << "\n\n";
- outs().flush();
- }
+void llvm::printCOFFUnwindInfo(const COFFObjectFile *Obj) {
+ const coff_file_header *Header;
+ if (error(Obj->getCOFFHeader(Header)))
+ return;
+
+ if (Header->Machine != COFF::IMAGE_FILE_MACHINE_AMD64) {
+ errs() << "Unsupported image machine type "
+ "(currently only AMD64 is supported).\n";
+ return;
+ }
+
+ std::vector<RelocationRef> Rels;
+ const RuntimeFunction *RFStart;
+ int NumRFs;
+ if (!getPDataSection(Obj, Rels, RFStart, NumRFs))
+ return;
+ ArrayRef<RuntimeFunction> RFs(RFStart, NumRFs);
+
+ bool IsExecutable = Rels.empty();
+ if (IsExecutable) {
+ for (const RuntimeFunction &RF : RFs)
+ printRuntimeFunction(Obj, RF);
+ return;
+ }
+
+ for (const RuntimeFunction &RF : RFs) {
+ uint64_t SectionOffset =
+ std::distance(RFs.begin(), &RF) * sizeof(RuntimeFunction);
+ printRuntimeFunctionRels(Obj, RF, SectionOffset, Rels);
}
}
projects / oota-llvm.git / blobdiff