#include "llvm/Support/PathV2.h"
#include "llvm/Support/FileSystem.h"
+#include "llvm/Support/Endian.h"
#include "llvm/Support/ErrorHandling.h"
#include <cctype>
#include <cstdio>
using llvm::sys::path::is_separator;
#ifdef LLVM_ON_WIN32
- const StringRef separators = "\\/";
- const char prefered_separator = '\\';
+ const char *separators = "\\/";
+ const char prefered_separator = '\\';
#else
- const StringRef separators = "/";
- const char prefered_separator = '/';
+ const char separators = '/';
+ const char prefered_separator = '/';
#endif
- const llvm::error_code success;
-
StringRef find_first_component(StringRef path) {
// Look for this first component in the following order.
// * empty (in this case we return an empty string)
const StringRef relative_path(StringRef path) {
StringRef root = root_path(path);
- return root.substr(root.size());
+ return path.substr(root.size());
}
void append(SmallVectorImpl<char> &path, const Twine &a,
void system_temp_directory(bool erasedOnReboot, SmallVectorImpl<char> &result) {
result.clear();
-
+
// Check whether the temporary directory is specified by an environment
// variable.
const char *EnvironmentVariable;
result.append(RequestedDir, RequestedDir + strlen(RequestedDir));
return;
}
-
+
// Fall back to a system default.
const char *DefaultResult;
#ifdef LLVM_ON_WIN32
#endif
result.append(DefaultResult, DefaultResult + strlen(DefaultResult));
}
-
+
bool has_root_name(const Twine &path) {
SmallString<128> path_storage;
StringRef p = path.toStringRef(path_storage);
error_code make_absolute(SmallVectorImpl<char> &path) {
StringRef p(path.data(), path.size());
- bool rootName = path::has_root_name(p),
- rootDirectory = path::has_root_directory(p);
+ bool rootDirectory = path::has_root_directory(p),
+#ifdef LLVM_ON_WIN32
+ rootName = path::has_root_name(p);
+#else
+ rootName = true;
+#endif
// Already absolute.
if (rootName && rootDirectory)
- return success;
+ return error_code::success();
// All of the following conditions will need the current directory.
SmallString<128> current_dir;
path::append(current_dir, p);
// Set path to the result.
path.swap(current_dir);
- return success;
+ return error_code::success();
}
if (!rootName && rootDirectory) {
path::append(curDirRootName, p);
// Set path to the result.
path.swap(curDirRootName);
- return success;
+ return error_code::success();
}
if (rootName && !rootDirectory) {
SmallString<128> res;
path::append(res, pRootName, bRootDirectory, bRelativePath, pRelativePath);
path.swap(res);
- return success;
+ return error_code::success();
}
llvm_unreachable("All rootName and rootDirectory combinations should have "
StringRef p = path.toStringRef(path_storage);
StringRef parent = path::parent_path(p);
- bool parent_exists;
+ if (!parent.empty()) {
+ bool parent_exists;
+ if (error_code ec = fs::exists(parent, parent_exists)) return ec;
- if (error_code ec = fs::exists(parent, parent_exists)) return ec;
-
- if (!parent_exists)
- if (error_code ec = create_directories(parent, existed)) return ec;
+ if (!parent_exists)
+ if (error_code ec = create_directories(parent, existed)) return ec;
+ }
return create_directory(p, existed);
}
if (error_code ec = status(path, st))
return ec;
result = is_directory(st);
- return success;
+ return error_code::success();
}
bool is_regular_file(file_status status) {
if (error_code ec = status(path, st))
return ec;
result = is_regular_file(st);
- return success;
+ return error_code::success();
}
bool is_symlink(file_status status) {
if (error_code ec = status(path, st))
return ec;
result = is_symlink(st);
- return success;
+ return error_code::success();
}
bool is_other(file_status status) {
if (ec == errc::value_too_large) {
// Magic.size() > file_size(Path).
result = false;
- return success;
+ return error_code::success();
}
return ec;
}
result = Magic == Buffer;
- return success;
+ return error_code::success();
+}
+
+/// @brief Identify the magic in magic.
+file_magic identify_magic(StringRef magic) {
+ if (magic.size() < 4)
+ return file_magic::unknown;
+ switch ((unsigned char)magic[0]) {
+ case 0xDE: // 0x0B17C0DE = BC wraper
+ if (magic[1] == (char)0xC0 && magic[2] == (char)0x17 &&
+ magic[3] == (char)0x0B)
+ return file_magic::bitcode;
+ break;
+ case 'B':
+ if (magic[1] == 'C' && magic[2] == (char)0xC0 && magic[3] == (char)0xDE)
+ return file_magic::bitcode;
+ break;
+ case '!':
+ if (magic.size() >= 8)
+ if (memcmp(magic.data(),"!<arch>\n",8) == 0)
+ return file_magic::archive;
+ break;
+
+ case '\177':
+ if (magic[1] == 'E' && magic[2] == 'L' && magic[3] == 'F') {
+ if (magic.size() >= 18 && magic[17] == 0)
+ switch (magic[16]) {
+ default: break;
+ case 1: return file_magic::elf_relocatable;
+ case 2: return file_magic::elf_executable;
+ case 3: return file_magic::elf_shared_object;
+ case 4: return file_magic::elf_core;
+ }
+ }
+ break;
+
+ case 0xCA:
+ if (magic[1] == char(0xFE) && magic[2] == char(0xBA) &&
+ magic[3] == char(0xBE)) {
+ // This is complicated by an overlap with Java class files.
+ // See the Mach-O section in /usr/share/file/magic for details.
+ if (magic.size() >= 8 && magic[7] < 43)
+ // FIXME: Universal Binary of any type.
+ return file_magic::macho_dynamically_linked_shared_lib;
+ }
+ break;
+
+ // The two magic numbers for mach-o are:
+ // 0xfeedface - 32-bit mach-o
+ // 0xfeedfacf - 64-bit mach-o
+ case 0xFE:
+ case 0xCE:
+ case 0xCF: {
+ uint16_t type = 0;
+ if (magic[0] == char(0xFE) && magic[1] == char(0xED) &&
+ magic[2] == char(0xFA) &&
+ (magic[3] == char(0xCE) || magic[3] == char(0xCF))) {
+ /* Native endian */
+ if (magic.size() >= 16) type = magic[14] << 8 | magic[15];
+ } else if ((magic[0] == char(0xCE) || magic[0] == char(0xCF)) &&
+ magic[1] == char(0xFA) && magic[2] == char(0xED) &&
+ magic[3] == char(0xFE)) {
+ /* Reverse endian */
+ if (magic.size() >= 14) type = magic[13] << 8 | magic[12];
+ }
+ switch (type) {
+ default: break;
+ case 1: return file_magic::macho_object;
+ case 2: return file_magic::macho_executable;
+ case 3: return file_magic::macho_fixed_virtual_memory_shared_lib;
+ case 4: return file_magic::macho_core;
+ case 5: return file_magic::macho_preload_executabl;
+ case 6: return file_magic::macho_dynamically_linked_shared_lib;
+ case 7: return file_magic::macho_dynamic_linker;
+ case 8: return file_magic::macho_bundle;
+ case 9: return file_magic::macho_dynamic_linker;
+ case 10: return file_magic::macho_dsym_companion;
+ }
+ break;
+ }
+ case 0xF0: // PowerPC Windows
+ case 0x83: // Alpha 32-bit
+ case 0x84: // Alpha 64-bit
+ case 0x66: // MPS R4000 Windows
+ case 0x50: // mc68K
+ case 0x4c: // 80386 Windows
+ if (magic[1] == 0x01)
+ return file_magic::coff_object;
+
+ case 0x90: // PA-RISC Windows
+ case 0x68: // mc68K Windows
+ if (magic[1] == 0x02)
+ return file_magic::coff_object;
+ break;
+
+ case 0x4d: // Possible MS-DOS stub on Windows PE file
+ if (magic[1] == 0x5a) {
+ uint32_t off =
+ *reinterpret_cast<const support::ulittle32_t*>(magic.data() + 0x3c);
+ // PE/COFF file, either EXE or DLL.
+ if (off < magic.size() && memcmp(magic.data() + off, "PE\0\0",4) == 0)
+ return file_magic::pecoff_executable;
+ }
+ break;
+
+ case 0x64: // x86-64 Windows.
+ if (magic[1] == char(0x86))
+ return file_magic::coff_object;
+ break;
+
+ default:
+ break;
+ }
+ return file_magic::unknown;
}
-error_code identify_magic(const Twine &path, LLVMFileType &result) {
+error_code identify_magic(const Twine &path, file_magic &result) {
SmallString<32> Magic;
error_code ec = get_magic(path, Magic.capacity(), Magic);
if (ec && ec != errc::value_too_large)
return ec;
- result = IdentifyFileType(Magic.data(), Magic.size());
- return success;
+ result = identify_magic(Magic);
+ return error_code::success();
}
namespace {
++count;
}
- return success;
+ return error_code::success();
}
} // end unnamed namespace
projects / oota-llvm.git / blobdiff