#include "llvm/Support/SourceMgr.h"
#include "llvm/Support/Win64EH.h"
#include "llvm/Support/raw_ostream.h"
-#include "llvm/Support/system_error.h"
#include <algorithm>
#include <cstring>
+#include <system_error>
using namespace llvm;
using namespace object;
// slots is provided.
static void printUnwindCode(ArrayRef<UnwindCode> UCs) {
assert(UCs.size() >= getNumUsedSlots(UCs[0]));
- outs() << format(" 0x%02x: ", unsigned(UCs[0].u.CodeOffset))
+ outs() << format(" 0x%02x: ", unsigned(UCs[0].u.CodeOffset))
<< getUnwindCodeTypeName(UCs[0].getUnwindOp());
switch (UCs[0].getUnwindOp()) {
case UOP_PushNonVol:
<< " remaining in buffer";
return ;
}
- printUnwindCode(ArrayRef<UnwindCode>(I, E));
+ printUnwindCode(makeArrayRef(I, E));
I += UsedSlots;
}
}
// Given a symbol sym this functions returns the address and section of it.
-static error_code resolveSectionAndAddress(const COFFObjectFile *Obj,
- const SymbolRef &Sym,
- const coff_section *&ResolvedSection,
- uint64_t &ResolvedAddr) {
- if (error_code EC = Sym.getAddress(ResolvedAddr))
+static std::error_code
+resolveSectionAndAddress(const COFFObjectFile *Obj, const SymbolRef &Sym,
+ const coff_section *&ResolvedSection,
+ uint64_t &ResolvedAddr) {
+ ErrorOr<uint64_t> ResolvedAddrOrErr = Sym.getAddress();
+ if (std::error_code EC = ResolvedAddrOrErr.getError())
return EC;
- section_iterator iter(Obj->section_begin());
- if (error_code EC = Sym.getSection(iter))
+ ResolvedAddr = *ResolvedAddrOrErr;
+ ErrorOr<section_iterator> Iter = Sym.getSection();
+ if (std::error_code EC = Iter.getError())
return EC;
- ResolvedSection = Obj->getCOFFSection(iter);
- return object_error::success;
+ ResolvedSection = Obj->getCOFFSection(**Iter);
+ return std::error_code();
}
// Given a vector of relocations for a section and an offset into this section
// the function returns the symbol used for the relocation at the offset.
-static error_code resolveSymbol(const std::vector<RelocationRef> &Rels,
- uint64_t Offset, SymbolRef &Sym) {
+static std::error_code resolveSymbol(const std::vector<RelocationRef> &Rels,
+ uint64_t Offset, SymbolRef &Sym) {
for (std::vector<RelocationRef>::const_iterator I = Rels.begin(),
E = Rels.end();
I != E; ++I) {
- uint64_t Ofs;
- if (error_code EC = I->getOffset(Ofs))
- return EC;
+ uint64_t Ofs = I->getOffset();
if (Ofs == Offset) {
Sym = *I->getSymbol();
- return object_error::success;
+ return std::error_code();
}
}
return object_error::parse_failed;
// the function resolves the symbol used for the relocation at the offset and
// returns the section content and the address inside the content pointed to
// by the symbol.
-static error_code getSectionContents(const COFFObjectFile *Obj,
- const std::vector<RelocationRef> &Rels,
- uint64_t Offset,
- ArrayRef<uint8_t> &Contents,
- uint64_t &Addr) {
+static std::error_code
+getSectionContents(const COFFObjectFile *Obj,
+ const std::vector<RelocationRef> &Rels, uint64_t Offset,
+ ArrayRef<uint8_t> &Contents, uint64_t &Addr) {
SymbolRef Sym;
- if (error_code EC = resolveSymbol(Rels, Offset, Sym))
+ if (std::error_code EC = resolveSymbol(Rels, Offset, Sym))
return EC;
const coff_section *Section;
- if (error_code EC = resolveSectionAndAddress(Obj, Sym, Section, Addr))
+ if (std::error_code EC = resolveSectionAndAddress(Obj, Sym, Section, Addr))
return EC;
- if (error_code EC = Obj->getSectionContents(Section, Contents))
+ if (std::error_code EC = Obj->getSectionContents(Section, Contents))
return EC;
- return object_error::success;
+ return std::error_code();
}
// Given a vector of relocations for a section and an offset into this section
// the function returns the name of the symbol used for the relocation at the
// offset.
-static error_code resolveSymbolName(const std::vector<RelocationRef> &Rels,
- uint64_t Offset, StringRef &Name) {
+static std::error_code resolveSymbolName(const std::vector<RelocationRef> &Rels,
+ uint64_t Offset, StringRef &Name) {
SymbolRef Sym;
- if (error_code EC = resolveSymbol(Rels, Offset, Sym))
+ if (std::error_code EC = resolveSymbol(Rels, Offset, Sym))
return EC;
- if (error_code EC = Sym.getName(Name))
+ ErrorOr<StringRef> NameOrErr = Sym.getName();
+ if (std::error_code EC = NameOrErr.getError())
return EC;
- return object_error::success;
+ Name = *NameOrErr;
+ return std::error_code();
}
static void printCOFFSymbolAddress(llvm::raw_ostream &Out,
return;
const pe32_header *PE32Header;
- if (error(Obj->getPE32Header(PE32Header)))
- return;
+ error(Obj->getPE32Header(PE32Header));
uint32_t ImageBase = PE32Header->ImageBase;
uintptr_t IntPtr = 0;
- if (error(Obj->getVaPtr(TableVA, IntPtr)))
- return;
+ error(Obj->getVaPtr(TableVA, IntPtr));
const support::ulittle32_t *P = (const support::ulittle32_t *)IntPtr;
outs() << "SEH Table:";
for (int I = 0; I < Count; ++I)
static void printLoadConfiguration(const COFFObjectFile *Obj) {
// Skip if it's not executable.
const pe32_header *PE32Header;
- if (error(Obj->getPE32Header(PE32Header)))
- return;
+ error(Obj->getPE32Header(PE32Header));
if (!PE32Header)
return;
- const coff_file_header *Header;
- if (error(Obj->getCOFFHeader(Header)))
- return;
// Currently only x86 is supported
- if (Header->Machine != COFF::IMAGE_FILE_MACHINE_I386)
+ if (Obj->getMachine() != COFF::IMAGE_FILE_MACHINE_I386)
return;
const data_directory *DataDir;
- if (error(Obj->getDataDirectory(COFF::LOAD_CONFIG_TABLE, DataDir)))
- return;
+ error(Obj->getDataDirectory(COFF::LOAD_CONFIG_TABLE, DataDir));
uintptr_t IntPtr = 0;
if (DataDir->RelativeVirtualAddress == 0)
return;
- if (error(Obj->getRvaPtr(DataDir->RelativeVirtualAddress, IntPtr)))
- return;
-
- const coff_load_configuration32 *LoadConf =
- reinterpret_cast<const coff_load_configuration32 *>(IntPtr);
+ error(Obj->getRvaPtr(DataDir->RelativeVirtualAddress, IntPtr));
+ auto *LoadConf = reinterpret_cast<const coff_load_configuration32 *>(IntPtr);
outs() << "Load configuration:"
<< "\n Timestamp: " << LoadConf->TimeDateStamp
<< "\n Major Version: " << LoadConf->MajorVersion
const import_lookup_table_entry32 *entry;
if (I->getImportLookupEntry(entry))
return;
- for (; entry->data; ++entry) {
+ for (; entry->Data; ++entry) {
if (entry->isOrdinal()) {
outs() << format(" % 6d\n", entry->getOrdinal());
continue;
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) {
+ for (const SectionRef &Section : Obj->sections()) {
StringRef Name;
- if (error(SI->getName(Name)))
- continue;
+ error(Section.getName(Name));
if (Name != ".pdata")
continue;
- const coff_section *Pdata = Obj->getCOFFSection(SI);
- for (relocation_iterator RI = SI->relocation_begin(),
- RE = SI->relocation_end();
- RI != RE; ++RI)
- Rels.push_back(*RI);
+ const coff_section *Pdata = Obj->getCOFFSection(Section);
+ for (const RelocationRef &Reloc : Section.relocations())
+ Rels.push_back(Reloc);
// Sort relocations by address.
std::sort(Rels.begin(), Rels.end(), RelocAddressLess);
ArrayRef<uint8_t> Contents;
- if (error(Obj->getSectionContents(Pdata, Contents)))
- continue;
+ error(Obj->getSectionContents(Pdata, Contents));
if (Contents.empty())
continue;
return false;
}
+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(makeArrayRef(&UI->UnwindCodes[0], UI->NumCodes));
+
+ outs() << "\n";
+ outs().flush();
+}
+
+/// 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,
- uint64_t SectionOffset,
- const std::vector<RelocationRef> &Rels) {
- outs() << "Function Table:\n";
+ const RuntimeFunction &RF) {
+ if (!RF.StartAddress)
+ return;
+ outs() << "Function Table:\n"
+ << format(" Start Address: 0x%04x\n",
+ static_cast<uint32_t>(RF.StartAddress))
+ << format(" End Address: 0x%04x\n",
+ static_cast<uint32_t>(RF.EndAddress))
+ << format(" Unwind Info Address: 0x%04x\n",
+ static_cast<uint32_t>(RF.UnwindInfoOffset));
+ uintptr_t addr;
+ if (Obj->getRvaPtr(RF.UnwindInfoOffset, addr))
+ return;
+ printWin64EHUnwindInfo(reinterpret_cast<const Win64EH::UnwindInfo *>(addr));
+}
+/// 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 +
ArrayRef<uint8_t> XContents;
uint64_t UnwindInfoOffset = 0;
- if (error(getSectionContents(
+ error(getSectionContents(
Obj, Rels, SectionOffset +
/*offsetof(RuntimeFunction, UnwindInfoOffset)*/ 8,
- XContents, UnwindInfoOffset)))
- return;
+ XContents, UnwindInfoOffset));
if (XContents.empty())
return;
if (UnwindInfoOffset > XContents.size())
return;
- 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
- }
-
- if (UI->NumCodes)
- outs() << " Unwind Codes:\n";
-
- printAllUnwindCodes(ArrayRef<UnwindCode>(&UI->UnwindCodes[0], UI->NumCodes));
-
- outs() << "\n\n";
- outs().flush();
+ auto *UI = reinterpret_cast<const Win64EH::UnwindInfo *>(XContents.data() +
+ UnwindInfoOffset);
+ printWin64EHUnwindInfo(UI);
}
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) {
+ if (Obj->getMachine() != COFF::IMAGE_FILE_MACHINE_AMD64) {
errs() << "Unsupported image machine type "
"(currently only AMD64 is supported).\n";
return;
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);
- printRuntimeFunction(Obj, RF, SectionOffset, Rels);
+ printRuntimeFunctionRels(Obj, RF, SectionOffset, Rels);
}
}
projects / oota-llvm.git / blobdiff