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authorDan Gohman <djg@cray.com>2007-07-18 16:29:46 +0000
committerDan Gohman <djg@cray.com>2007-07-18 16:29:46 +0000
commitf17a25c88b892d30c2b41ba7ecdfbdfb2b4be9cc (patch)
treeebb79ea1ee5e3bc1fdf38541a811a8b804f0679a /tools/llvm-nm
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It's not necessary to do rounding for alloca operations when the requested
alignment is equal to the stack alignment. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40004 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'tools/llvm-nm')
-rw-r--r--tools/llvm-nm/Makefile14
-rw-r--r--tools/llvm-nm/llvm-nm.cpp184
2 files changed, 198 insertions, 0 deletions
diff --git a/tools/llvm-nm/Makefile b/tools/llvm-nm/Makefile
new file mode 100644
index 0000000..4af8917
--- /dev/null
+++ b/tools/llvm-nm/Makefile
@@ -0,0 +1,14 @@
+##===- tools/llvm-nm/Makefile ------------------------------*- Makefile -*-===##
+#
+# The LLVM Compiler Infrastructure
+#
+# This file was developed by the LLVM research group and is distributed under
+# the University of Illinois Open Source License. See LICENSE.TXT for details.
+#
+##===----------------------------------------------------------------------===##
+LEVEL = ../..
+
+TOOLNAME = llvm-nm
+LINK_COMPONENTS = archive bitreader
+
+include $(LEVEL)/Makefile.common
diff --git a/tools/llvm-nm/llvm-nm.cpp b/tools/llvm-nm/llvm-nm.cpp
new file mode 100644
index 0000000..bf98653
--- /dev/null
+++ b/tools/llvm-nm/llvm-nm.cpp
@@ -0,0 +1,184 @@
+//===-- llvm-nm.cpp - Symbol table dumping utility for llvm ---------------===//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file was developed by the LLVM research group and is distributed under
+// the University of Illinois Open Source License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This program is a utility that works like traditional Unix "nm",
+// that is, it prints out the names of symbols in a bitcode file,
+// along with some information about each symbol.
+//
+// This "nm" does not print symbols' addresses. It supports many of
+// the features of GNU "nm", including its different output formats.
+//
+//===----------------------------------------------------------------------===//
+
+#include "llvm/Module.h"
+#include "llvm/Bitcode/ReaderWriter.h"
+#include "llvm/Bitcode/Archive.h"
+#include "llvm/Support/CommandLine.h"
+#include "llvm/Support/ManagedStatic.h"
+#include "llvm/Support/MemoryBuffer.h"
+#include "llvm/System/Signals.h"
+#include <algorithm>
+#include <cctype>
+#include <cerrno>
+#include <cstring>
+#include <iostream>
+using namespace llvm;
+
+namespace {
+ enum OutputFormatTy { bsd, sysv, posix };
+ cl::opt<OutputFormatTy>
+ OutputFormat("format",
+ cl::desc("Specify output format"),
+ cl::values(clEnumVal(bsd, "BSD format"),
+ clEnumVal(sysv, "System V format"),
+ clEnumVal(posix, "POSIX.2 format"),
+ clEnumValEnd), cl::init(bsd));
+ cl::alias OutputFormat2("f", cl::desc("Alias for --format"),
+ cl::aliasopt(OutputFormat));
+
+ cl::list<std::string>
+ InputFilenames(cl::Positional, cl::desc("<input bitcode files>"),
+ cl::ZeroOrMore);
+
+ cl::opt<bool> UndefinedOnly("undefined-only",
+ cl::desc("Show only undefined symbols"));
+ cl::alias UndefinedOnly2("u", cl::desc("Alias for --undefined-only"),
+ cl::aliasopt(UndefinedOnly));
+
+ cl::opt<bool> DefinedOnly("defined-only",
+ cl::desc("Show only defined symbols"));
+
+ cl::opt<bool> ExternalOnly("extern-only",
+ cl::desc("Show only external symbols"));
+ cl::alias ExternalOnly2("g", cl::desc("Alias for --extern-only"),
+ cl::aliasopt(ExternalOnly));
+
+ cl::opt<bool> BSDFormat("B", cl::desc("Alias for --format=bsd"));
+ cl::opt<bool> POSIXFormat("P", cl::desc("Alias for --format=posix"));
+
+ bool MultipleFiles = false;
+
+ std::string ToolName;
+}
+
+static char TypeCharForSymbol(GlobalValue &GV) {
+ if (GV.isDeclaration()) return 'U';
+ if (GV.hasLinkOnceLinkage()) return 'C';
+ if (GV.hasWeakLinkage()) return 'W';
+ if (isa<Function>(GV) && GV.hasInternalLinkage()) return 't';
+ if (isa<Function>(GV)) return 'T';
+ if (isa<GlobalVariable>(GV) && GV.hasInternalLinkage()) return 'd';
+ if (isa<GlobalVariable>(GV)) return 'D';
+ if (const GlobalAlias *GA = dyn_cast<GlobalAlias>(&GV)) {
+ const GlobalValue *AliasedGV = GA->getAliasedGlobal();
+ if (isa<Function>(AliasedGV)) return 'T';
+ if (isa<GlobalVariable>(AliasedGV)) return 'D';
+ }
+ return '?';
+}
+
+static void DumpSymbolNameForGlobalValue(GlobalValue &GV) {
+ const std::string SymbolAddrStr = " "; // Not used yet...
+ char TypeChar = TypeCharForSymbol (GV);
+ if ((TypeChar != 'U') && UndefinedOnly)
+ return;
+ if ((TypeChar == 'U') && DefinedOnly)
+ return;
+ if (GV.hasInternalLinkage () && ExternalOnly)
+ return;
+ if (OutputFormat == posix) {
+ std::cout << GV.getName () << " " << TypeCharForSymbol (GV) << " "
+ << SymbolAddrStr << "\n";
+ } else if (OutputFormat == bsd) {
+ std::cout << SymbolAddrStr << " " << TypeCharForSymbol (GV) << " "
+ << GV.getName () << "\n";
+ } else if (OutputFormat == sysv) {
+ std::string PaddedName (GV.getName ());
+ while (PaddedName.length () < 20)
+ PaddedName += " ";
+ std::cout << PaddedName << "|" << SymbolAddrStr << "| "
+ << TypeCharForSymbol (GV)
+ << " | | | |\n";
+ }
+}
+
+static void DumpSymbolNamesFromModule(Module *M) {
+ const std::string &Filename = M->getModuleIdentifier ();
+ if (OutputFormat == posix && MultipleFiles) {
+ std::cout << Filename << ":\n";
+ } else if (OutputFormat == bsd && MultipleFiles) {
+ std::cout << "\n" << Filename << ":\n";
+ } else if (OutputFormat == sysv) {
+ std::cout << "\n\nSymbols from " << Filename << ":\n\n"
+ << "Name Value Class Type"
+ << " Size Line Section\n";
+ }
+ std::for_each (M->begin (), M->end (), DumpSymbolNameForGlobalValue);
+ std::for_each (M->global_begin (), M->global_end (),
+ DumpSymbolNameForGlobalValue);
+ std::for_each (M->alias_begin (), M->alias_end (),
+ DumpSymbolNameForGlobalValue);
+}
+
+static void DumpSymbolNamesFromFile(std::string &Filename) {
+ std::string ErrorMessage;
+ sys::Path aPath(Filename);
+ // Note: Currently we do not support reading an archive from stdin.
+ if (Filename == "-" || aPath.isBitcodeFile()) {
+ std::auto_ptr<MemoryBuffer> Buffer(
+ MemoryBuffer::getFileOrSTDIN(Filename, &ErrorMessage));
+ Module *Result = 0;
+ if (Buffer.get())
+ Result = ParseBitcodeFile(Buffer.get(), &ErrorMessage);
+
+ if (Result)
+ DumpSymbolNamesFromModule(Result);
+ else {
+ std::cerr << ToolName << ": " << Filename << ": " << ErrorMessage << "\n";
+ return;
+ }
+
+ } else if (aPath.isArchive()) {
+ std::string ErrMsg;
+ Archive* archive = Archive::OpenAndLoad(sys::Path(Filename), &ErrorMessage);
+ if (!archive)
+ std::cerr << ToolName << ": " << Filename << ": " << ErrorMessage << "\n";
+ std::vector<Module *> Modules;
+ if (archive->getAllModules(Modules, &ErrorMessage)) {
+ std::cerr << ToolName << ": " << Filename << ": " << ErrorMessage << "\n";
+ return;
+ }
+ MultipleFiles = true;
+ std::for_each (Modules.begin(), Modules.end(), DumpSymbolNamesFromModule);
+ } else {
+ std::cerr << ToolName << ": " << Filename << ": "
+ << "unrecognizable file type\n";
+ return;
+ }
+}
+
+int main(int argc, char **argv) {
+ llvm_shutdown_obj X; // Call llvm_shutdown() on exit.
+ cl::ParseCommandLineOptions(argc, argv, " llvm symbol table dumper\n");
+ sys::PrintStackTraceOnErrorSignal();
+
+ ToolName = argv[0];
+ if (BSDFormat) OutputFormat = bsd;
+ if (POSIXFormat) OutputFormat = posix;
+
+ switch (InputFilenames.size()) {
+ case 0: InputFilenames.push_back("-");
+ case 1: break;
+ default: MultipleFiles = true;
+ }
+
+ std::for_each(InputFilenames.begin(), InputFilenames.end(),
+ DumpSymbolNamesFromFile);
+ return 0;
+}
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