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Unified Diff: tools/pnacl-bcdis/pnacl-bcdis.cpp

Issue 939073008: Rebased PNaCl localmods in LLVM to 223109 (Closed)
Patch Set: undo localmod Created 5 years, 10 months ago
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Index: tools/pnacl-bcdis/pnacl-bcdis.cpp
diff --git a/tools/pnacl-bcdis/pnacl-bcdis.cpp b/tools/pnacl-bcdis/pnacl-bcdis.cpp
new file mode 100644
index 0000000000000000000000000000000000000000..bb6c8e3b00a0fdc1bfb84ef72d503aba18838204
--- /dev/null
+++ b/tools/pnacl-bcdis/pnacl-bcdis.cpp
@@ -0,0 +1,81 @@
+//===-- pnacl-bcdis.cpp - Disassemble pnacl bitcode -----------------------===//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+/// TODO(kschimpf): Add disassembling abbreviations.
+
+#include "llvm/Bitcode/NaCl/NaClReaderWriter.h"
+#include "llvm/Support/CommandLine.h"
+#include "llvm/Support/FileSystem.h"
+#include "llvm/Support/ManagedStatic.h"
+#include "llvm/Support/MemoryBuffer.h"
+#include "llvm/Support/PrettyStackTrace.h"
+#include "llvm/Support/Signals.h"
+#include "llvm/Support/ToolOutputFile.h"
+#include "llvm/Support/raw_ostream.h"
+#include <system_error>
+
+namespace {
+
+using namespace llvm;
+
+// The input file to read.
+static cl::opt<std::string>
+ InputFilename(cl::Positional, cl::desc("<input bitcode>"), cl::init("-"));
+
+// The output file to generate.
+static cl::opt<std::string>
+OutputFilename("o", cl::desc("Specify output filename"),
+ cl::value_desc("filename"), cl::init("-"));
+
+static cl::opt<bool>
+NoRecords("no-records",
+ cl::desc("Don't include records"),
+ cl::init(false));
+
+static cl::opt<bool>
+NoAssembly("no-assembly",
+ cl::desc("Don't include assembly"),
+ cl::init(false));
+
+// Reads and disassembles the bitcode file. Returns false
+// if successful, true otherwise.
+static bool DisassembleBitcode() {
+ // Open the bitcode file and put into a buffer.
+ ErrorOr<std::unique_ptr<MemoryBuffer>> ErrOrFile =
+ MemoryBuffer::getFileOrSTDIN(InputFilename);
+ if (std::error_code EC = ErrOrFile.getError()) {
+ errs() << "Error reading '" << InputFilename << "': " << EC.message()
+ << "\n";
+ return true;
+ }
+
+ // Create a stream to output the bitcode text to.
+ std::error_code EC;
+ raw_fd_ostream Output(OutputFilename, EC, sys::fs::F_None);
+ if (EC) {
+ errs() << EC.message() << '\n';
+ return true;
+ }
+
+ // Parse the the bitcode file.
+ return NaClObjDump(ErrOrFile.get().release(), Output, NoRecords, NoAssembly);
+}
+
+}
+
+int main(int argc, char **argv) {
+ // Print a stack trace if we signal out.
+ sys::PrintStackTraceOnErrorSignal();
+ PrettyStackTraceProgram X(argc, argv);
+ llvm_shutdown_obj Y; // Call llvm_shutdown() on exit.
+ cl::ParseCommandLineOptions(argc, argv, "pnacl-bccompress file analyzer\n");
+
+ if (DisassembleBitcode()) return 1;
+ return 0;
+}
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