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llvm-objdump: Add -s, which prints the contents of each section.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@142199 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Michael J. Spencer 2011-10-17 17:13:22 +00:00
parent d955cf2366
commit 1e8ba3fa21
2 changed files with 54 additions and 9 deletions
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6
test/Object/objdump-section-content.test
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@ -3,9 +3,7 @@ RUN: | FileCheck %s -check-prefix COFF-i386
RUN: llvm-objdump -s %p/TestObjectFiles/trivial-object-test.elf-i386 \
RUN: | FileCheck %s -check-prefix ELF-i386
XFAIL: *
COFF-i386: trivial-object-test.coff-i386: file format pe-i386
COFF-i386: trivial-object-test.coff-i386: file format
COFF-i386: Contents of section .text:
COFF-i386: 0000 83ec0cc7 44240800 000000c7 04240000 ....D$.......$..
COFF-i386: 0010 0000e800 000000e8 00000000 8b442408 .............D$.
@ -13,7 +11,7 @@ COFF-i386: 0020 83c40cc3 ....
COFF-i386: Contents of section .data:
COFF-i386: 0000 48656c6c 6f20576f 726c6421 00 Hello World!.
ELF-i386: trivial-object-test.elf-i386: file format elf32-i386
ELF-i386: trivial-object-test.elf-i386: file format
ELF-i386: Contents of section .text:
ELF-i386: 0000 83ec0cc7 44240800 000000c7 04240000 ....D$.......$..
ELF-i386: 0010 0000e8fc ffffffe8 fcffffff 8b442408 .............D$.

57
tools/llvm-objdump/llvm-objdump.cpp
View File

@ -18,6 +18,7 @@
#include "llvm/Object/Archive.h"
#include "llvm/Object/ObjectFile.h"
#include "llvm/ADT/OwningPtr.h"
#include "llvm/ADT/StringExtras.h"
#include "llvm/ADT/Triple.h"
#include "llvm/ADT/STLExtras.h"
#include "llvm/MC/MCAsmInfo.h"
@ -60,6 +61,9 @@ Disassembled("d", cl::desc("Alias for --disassemble"),
static cl::opt<bool>
Relocations("r", cl::desc("Display the relocation entries in the file"));
static cl::opt<bool>
SectionContents("s", cl::desc("Display the content of each section"));
static cl::opt<bool>
MachO("macho", cl::desc("Use MachO specific object file parser"));
static cl::alias
@ -158,10 +162,6 @@ static void DisassembleObject(const ObjectFile *Obj, bool InlineRelocs) {
return;
}
outs() << '\n';
outs() << Obj->getFileName()
<< ":\tfile format " << Obj->getFileFormatName() << "\n\n";
error_code ec;
for (section_iterator i = Obj->begin_sections(),
e = Obj->end_sections();
@ -370,13 +370,60 @@ static void PrintSectionHeaders(const ObjectFile *o) {
}
}
static void PrintSectionContents(const ObjectFile *o) {
error_code ec;
for (section_iterator si = o->begin_sections(),
se = o->end_sections();
si != se; si.increment(ec)) {
if (error(ec)) return;
StringRef Name;
StringRef Contents;
uint64_t BaseAddr;
if (error(si->getName(Name))) continue;
if (error(si->getContents(Contents))) continue;
if (error(si->getAddress(BaseAddr))) continue;
outs() << "Contents of section " << Name << ":\n";
// Dump out the content as hex and printable ascii characters.
for (std::size_t addr = 0, end = Contents.size(); addr < end; addr += 16) {
outs() << format(" %04x ", BaseAddr + addr);
// Dump line of hex.
for (std::size_t i = 0; i < 16; ++i) {
if (i != 0 && i % 4 == 0)
outs() << ' ';
if (addr + i < end)
outs() << hexdigit((Contents[addr + i] >> 4) & 0xF, true)
<< hexdigit(Contents[addr + i] & 0xF, true);
else
outs() << " ";
}
// Print ascii.
outs() << " ";
for (std::size_t i = 0; i < 16 && addr + i < end; ++i) {
if (std::isprint(Contents[addr + i] & 0xFF))
outs() << Contents[addr + i];
else
outs() << ".";
}
outs() << "\n";
}
}
}
static void DumpObject(const ObjectFile *o) {
outs() << '\n';
outs() << o->getFileName()
<< ":\tfile format " << o->getFileFormatName() << "\n\n";
if (Disassemble)
DisassembleObject(o, Relocations);
if (Relocations && !Disassemble)
PrintRelocations(o);
if (SectionHeaders)
PrintSectionHeaders(o);
if (SectionContents)
PrintSectionContents(o);
}
/// @brief Dump each object file in \a a;
@ -447,7 +494,7 @@ int main(int argc, char **argv) {
if (InputFilenames.size() == 0)
InputFilenames.push_back("a.out");
if (!Disassemble && !Relocations && !SectionHeaders) {
if (!Disassemble && !Relocations && !SectionHeaders && !SectionContents) {
cl::PrintHelpMessage();
return 2;
}