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Teach identify_file_magic to identify PDB files.

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llvm-svn: 326924
This commit is contained in:
Zachary Turner 2018-03-07 18:40:41 +00:00
parent c1b5ea314a
commit 209938dde3
3 changed files with 8 additions and 2 deletions
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3
include/llvm/BinaryFormat/Magic.h
View File

@ -45,7 +45,8 @@ struct file_magic {
coff_import_library, ///< COFF import library
pecoff_executable, ///< PECOFF executable file
windows_resource, ///< Windows compiled resource file (.res)
wasm_object ///< WebAssembly Object file
wasm_object, ///< WebAssembly Object file
pdb, ///< Windows PDB debug info file
};
bool is_object() const { return V != unknown; }

4
lib/BinaryFormat/Magic.cpp
View File

@ -181,7 +181,7 @@ file_magic llvm::identify_magic(StringRef Magic) {
return file_magic::coff_object;
break;
case 'M': // Possible MS-DOS stub on Windows PE file
case 'M': // Possible MS-DOS stub on Windows PE file or MSF/PDB file.
if (startswith(Magic, "MZ") && Magic.size() >= 0x3c + 4) {
uint32_t off = read32le(Magic.data() + 0x3c);
// PE/COFF file, either EXE or DLL.
@ -189,6 +189,8 @@ file_magic llvm::identify_magic(StringRef Magic) {
StringRef(COFF::PEMagic, sizeof(COFF::PEMagic))))
return file_magic::pecoff_executable;
}
if (Magic.startswith("Microsoft C/C++ MSF 7.00\r\n"))
return file_magic::pdb;
break;
case 0x64: // x86-64 or ARM64 Windows.

3
unittests/BinaryFormat/TestFileMagic.cpp
View File

@ -81,6 +81,8 @@ const char windows_resource[] =
const char macho_dynamically_linked_shared_lib_stub[] =
"\xfe\xed\xfa\xce........\x00\x00\x00\x09............";
const char ms_dos_stub_broken[] = "\x4d\x5a\x20\x20";
const char pdb[] = "Microsoft C/C++ MSF 7.00\r\n\x1a"
"DS\x00\x00\x00";
TEST_F(MagicTest, Magic) {
struct type {
@ -110,6 +112,7 @@ TEST_F(MagicTest, Magic) {
DEFINE(macho_dsym_companion),
DEFINE(macho_kext_bundle),
DEFINE(windows_resource),
DEFINE(pdb),
{"ms_dos_stub_broken", ms_dos_stub_broken, sizeof(ms_dos_stub_broken),
file_magic::unknown},
#undef DEFINE