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Teach llvm-objdump to disassemble sections symbol by symbol.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@135289 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Benjamin Kramer 2011-07-15 18:39:24 +00:00
parent 07ea23aa2d
commit 739b65bf85
2 changed files with 57 additions and 20 deletions
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4
include/llvm/Object/ObjectFile.h
View File

@ -172,6 +172,10 @@ public:
return &Current; return &Current;
} }
const content_type &operator*() const {
return Current;
}
bool operator==(const content_iterator &other) const { bool operator==(const content_iterator &other) const {
return Current == other.Current; return Current == other.Current;
} }

45
tools/llvm-objdump/llvm-objdump.cpp
View File

@ -16,6 +16,7 @@
#include "llvm/Object/ObjectFile.h" #include "llvm/Object/ObjectFile.h"
#include "llvm/ADT/OwningPtr.h" #include "llvm/ADT/OwningPtr.h"
#include "llvm/ADT/Triple.h" #include "llvm/ADT/Triple.h"
#include "llvm/ADT/STLExtras.h"
#include "llvm/MC/MCAsmInfo.h" #include "llvm/MC/MCAsmInfo.h"
#include "llvm/MC/MCDisassembler.h" #include "llvm/MC/MCDisassembler.h"
#include "llvm/MC/MCInst.h" #include "llvm/MC/MCInst.h"
@ -158,7 +159,7 @@ static void DisassembleInput(const StringRef &Filename) {
outs() << '\n'; outs() << '\n';
outs() << Filename outs() << Filename
<< ":\tfile format " << Obj->getFileFormatName() << "\n\n\n"; << ":\tfile format " << Obj->getFileFormatName() << "\n\n";
error_code ec; error_code ec;
for (ObjectFile::section_iterator i = Obj->begin_sections(), for (ObjectFile::section_iterator i = Obj->begin_sections(),
@ -169,9 +170,32 @@ static void DisassembleInput(const StringRef &Filename) {
if (error(i->isText(text))) break; if (error(i->isText(text))) break;
if (!text) continue; if (!text) continue;
// Make a list of all the symbols in this section.
std::vector<std::pair<uint64_t, StringRef> > Symbols;
for (ObjectFile::symbol_iterator si = Obj->begin_symbols(),
se = Obj->end_symbols();
si != se; si.increment(ec)) {
bool contains;
if (!error(i->containsSymbol(*si, contains)) && contains) {
uint64_t Address;
if (error(si->getAddress(Address))) break;
StringRef Name;
if (error(si->getName(Name))) break;
Symbols.push_back(std::make_pair(Address, Name));
}
}
// Sort the symbols by address, just in case they didn't come in that way.
array_pod_sort(Symbols.begin(), Symbols.end());
StringRef name; StringRef name;
if (error(i->getName(name))) break; if (error(i->getName(name))) break;
outs() << "Disassembly of section " << name << ":\n\n"; outs() << "Disassembly of section " << name << ':';
// If the section has no symbols just insert a dummy one and disassemble
// the whole section.
if (Symbols.empty())
Symbols.push_back(std::make_pair(0, name));
// Set up disassembler. // Set up disassembler.
OwningPtr<const MCAsmInfo> AsmInfo(TheTarget->createMCAsmInfo(TripleName)); OwningPtr<const MCAsmInfo> AsmInfo(TheTarget->createMCAsmInfo(TripleName));
@ -200,15 +224,23 @@ static void DisassembleInput(const StringRef &Filename) {
StringRefMemoryObject memoryObject(Bytes); StringRefMemoryObject memoryObject(Bytes);
uint64_t Size; uint64_t Size;
uint64_t Index; uint64_t Index;
uint64_t SectSize;
if (error(i->getSize(SectSize))) break;
for (Index = 0; Index < Bytes.size(); Index += Size) { // Disassemble symbol by symbol.
for (unsigned si = 0, se = Symbols.size(); si != se; ++si) {
uint64_t Start = Symbols[si].first;
uint64_t End = si == se-1 ? SectSize : Symbols[si + 1].first - 1;
outs() << '\n' << Symbols[si].second << ":\n";
for (Index = Start; Index < End; Index += Size) {
MCInst Inst; MCInst Inst;
# ifndef NDEBUG #ifndef NDEBUG
raw_ostream &DebugOut = DebugFlag ? dbgs() : nulls(); raw_ostream &DebugOut = DebugFlag ? dbgs() : nulls();
# else #else
raw_ostream &DebugOut = nulls(); raw_ostream &DebugOut = nulls();
# endif #endif
if (DisAsm->getInstruction(Inst, Size, memoryObject, Index, DebugOut)) { if (DisAsm->getInstruction(Inst, Size, memoryObject, Index, DebugOut)) {
uint64_t addr; uint64_t addr;
@ -224,6 +256,7 @@ static void DisassembleInput(const StringRef &Filename) {
} }
} }
} }
}
} }
int main(int argc, char **argv) { int main(int argc, char **argv) {