pdbdump: print out COFF section headers.

Unlike other sections that can grow to any size, the COFF section header
stream has maximum length because each record is fixed size and the COFF
file format limits the maximum number of sections. So I decided to not
create a specific stream class for it. Instead, I added a member function
to DbiStream class which returns a vector of COFF headers.

Differential Revision: http://reviews.llvm.org/D20717

llvm-svn: 271557

1 files changed, 39 insertions, 0 deletions

diff --git a/llvm/tools/llvm-pdbdump/llvm-pdbdump.cpp b/llvm/tools/llvm-pdbdump/llvm-pdbdump.cpp
index c98f2eed02c..b295876da39 100644
--- a/llvm/tools/llvm-pdbdump/llvm-pdbdump.cpp
+++ b/llvm/tools/llvm-pdbdump/llvm-pdbdump.cpp
@@ -53,6 +53,7 @@
 #include "llvm/DebugInfo/PDB/Raw/RawError.h"
 #include "llvm/DebugInfo/PDB/Raw/RawSession.h"
 #include "llvm/DebugInfo/PDB/Raw/TpiStream.h"
+#include "llvm/Object/COFF.h"
 #include "llvm/Support/COM.h"
 #include "llvm/Support/CommandLine.h"
 #include "llvm/Support/ConvertUTF.h"
@@ -149,6 +150,10 @@ cl::opt<bool>
     DumpSymRecordBytes("raw-sym-record-bytes",
                        cl::desc("dump CodeView symbol record raw bytes"),
                        cl::cat(NativeOptions));
+cl::opt<bool> DumpSectionHeaders("raw-section-headers",
+                                 cl::desc("dump section headers"),
+                                 cl::cat(NativeOptions));
+
 cl::opt<bool>
     RawAll("raw-all",
            cl::desc("Implies most other options in 'Native Options' category"),
@@ -691,6 +696,36 @@ static Error dumpPublicsStream(ScopedPrinter &P, PDBFile &File,
   return Error::success();
 }
 
+static Error dumpSectionHeaders(ScopedPrinter &P, PDBFile &File,
+                                codeview::CVTypeDumper &TD) {
+  if (!opts::DumpSectionHeaders)
+    return Error::success();
+
+  auto DbiS = File.getPDBDbiStream();
+  if (auto EC = DbiS.takeError())
+    return EC;
+  DbiStream &DS = DbiS.get();
+
+  ListScope D(P, "Section Headers");
+  for (const object::coff_section &Section : DS.getSectionHeaders()) {
+    DictScope DD(P, "");
+
+    // If a name is 8 characters long, there is no NUL character at end.
+    StringRef Name(Section.Name, strnlen(Section.Name, sizeof(Section.Name)));
+    P.printString("Name", Name);
+    P.printNumber("Virtual Size", Section.VirtualSize);
+    P.printNumber("Virtual Address", Section.VirtualAddress);
+    P.printNumber("Size of Raw Data", Section.SizeOfRawData);
+    P.printNumber("File Pointer to Raw Data", Section.PointerToRawData);
+    P.printNumber("File Pointer to Relocations", Section.PointerToRelocations);
+    P.printNumber("File Pointer to Linenumbers", Section.PointerToLinenumbers);
+    P.printNumber("Number of Relocations", Section.NumberOfRelocations);
+    P.printNumber("Number of Linenumbers", Section.NumberOfLinenumbers);
+    P.printNumber("Characteristics", Section.Characteristics);
+  }
+  return Error::success();
+}
+
 static Error dumpStructure(RawSession &RS) {
   PDBFile &File = RS.getPDBFile();
   ScopedPrinter P(outs());
@@ -716,6 +751,7 @@ static Error dumpStructure(RawSession &RS) {
   codeview::CVTypeDumper TD(&P, false);
   if (auto EC = dumpTpiStream(P, File, TD, StreamTPI))
     return EC;
+
   if (auto EC = dumpTpiStream(P, File, TD, StreamIPI))
     return EC;
 
@@ -731,6 +767,8 @@ static Error dumpStructure(RawSession &RS) {
   if (auto EC = dumpPublicsStream(P, File, TD))
     return EC;
 
+  if (auto EC = dumpSectionHeaders(P, File, TD))
+    return EC;
   return Error::success();
 }
 
@@ -927,6 +965,7 @@ int main(int argc_, const char *argv_[]) {
     opts::DumpModuleFiles = true;
     opts::DumpModuleSyms = true;
     opts::DumpPublics = true;
+    opts::DumpSectionHeaders = true;
     opts::DumpStreamSummary = true;
     opts::DumpStreamBlocks = true;
     opts::DumpTpiRecords = true;