[llvm-symbolizer] -print-source-context-lines option to print source code around...

[oota-llvm.git] / tools / llvm-symbolizer / llvm-symbolizer.cpp

diff --git a/tools/llvm-symbolizer/llvm-symbolizer.cpp b/tools/llvm-symbolizer/llvm-symbolizer.cpp
index 5784e6ba5d97fffef02e40703335f9eb5e8685e3..950349377bf79c21ca85579188212b8442cc670c 100644 (file)
--- a/tools/llvm-symbolizer/llvm-symbolizer.cpp
+++ b/tools/llvm-symbolizer/llvm-symbolizer.cpp
@@ -16,6 +16,7 @@
 //===----------------------------------------------------------------------===//
 
 #include "llvm/ADT/StringRef.h"
+#include "llvm/DebugInfo/Symbolize/DIPrinter.h"
 #include "llvm/DebugInfo/Symbolize/Symbolize.h"
 #include "llvm/Support/COM.h"
 #include "llvm/Support/CommandLine.h"
@@ -77,18 +78,29 @@ static cl::opt<bool>
     ClPrintAddress("print-address", cl::init(false),
                    cl::desc("Show address before line information"));
 
-static bool parseCommand(bool &IsData, std::string &ModuleName,
-                         uint64_t &ModuleOffset) {
+static cl::opt<bool>
+    ClPrettyPrint("pretty-print", cl::init(false),
+                  cl::desc("Make the output more human friendly"));
+
+static cl::opt<int> ClPrintSourceContextLines(
+    "print-source-context-lines", cl::init(0),
+    cl::desc("Print N number of source file context"));
+
+static bool error(std::error_code ec) {
+  if (!ec)
+    return false;
+  errs() << "LLVMSymbolizer: error reading file: " << ec.message() << ".\n";
+  return true;
+}
+
+static bool parseCommand(StringRef InputString, bool &IsData,
+                         std::string &ModuleName, uint64_t &ModuleOffset) {
   const char *kDataCmd = "DATA ";
   const char *kCodeCmd = "CODE ";
-  const int kMaxInputStringLength = 1024;
-  const char kDelimiters[] = " \n";
-  char InputString[kMaxInputStringLength];
-  if (!fgets(InputString, sizeof(InputString), stdin))
-    return false;
+  const char kDelimiters[] = " \n\r";
   IsData = false;
   ModuleName = "";
-  char *pos = InputString;
+  const char *pos = InputString.data();
   if (strncmp(pos, kDataCmd, strlen(kDataCmd)) == 0) {
     IsData = true;
     pos += strlen(kDataCmd);
@@ -105,7 +117,7 @@ static bool parseCommand(bool &IsData, std::string &ModuleName,
     if (*pos == '"' || *pos == '\'') {
       char quote = *pos;
       pos++;
-      char *end = strchr(pos, quote);
+      const char *end = strchr(pos, quote);
       if (!end)
         return false;
       ModuleName = std::string(pos, end - pos);
@@ -133,9 +145,9 @@ int main(int argc, char **argv) {
   llvm::sys::InitializeCOMRAII COM(llvm::sys::COMThreadingMode::MultiThreaded);
 
   cl::ParseCommandLineOptions(argc, argv, "llvm-symbolizer\n");
-  LLVMSymbolizer::Options Opts(ClPrintFunctions, ClUseSymbolTable,
-                               ClPrintInlining, ClDemangle,
+  LLVMSymbolizer::Options Opts(ClPrintFunctions, ClUseSymbolTable, ClDemangle,
                                ClUseRelativeAddress, ClDefaultArch);
+
   for (const auto &hint : ClDsymHint) {
     if (sys::path::extension(hint) == ".dSYM") {
       Opts.DsymHints.push_back(hint);
@@ -146,19 +158,43 @@ int main(int argc, char **argv) {
   }
   LLVMSymbolizer Symbolizer(Opts);
 
-  bool IsData = false;
-  std::string ModuleName;
-  uint64_t ModuleOffset;
-  while (parseCommand(IsData, ModuleName, ModuleOffset)) {
-    std::string Result =
-        IsData ? Symbolizer.symbolizeData(ModuleName, ModuleOffset)
-               : Symbolizer.symbolizeCode(ModuleName, ModuleOffset);
+  DIPrinter Printer(outs(), ClPrintFunctions != FunctionNameKind::None,
+                    ClPrettyPrint, ClPrintSourceContextLines);
+
+  const int kMaxInputStringLength = 1024;
+  char InputString[kMaxInputStringLength];
+
+  while (true) {
+    if (!fgets(InputString, sizeof(InputString), stdin))
+      break;
+
+    bool IsData = false;
+    std::string ModuleName;
+    uint64_t ModuleOffset = 0;
+    if (!parseCommand(StringRef(InputString), IsData, ModuleName,
+                      ModuleOffset)) {
+      outs() << InputString;
+      continue;
+    }
+
     if (ClPrintAddress) {
       outs() << "0x";
       outs().write_hex(ModuleOffset);
-      outs() << "\n";
+      StringRef Delimiter = (ClPrettyPrint == true) ? ": " : "\n";
+      outs() << Delimiter;
+    }
+    if (IsData) {
+      auto ResOrErr = Symbolizer.symbolizeData(ModuleName, ModuleOffset);
+      Printer << (error(ResOrErr.getError()) ? DIGlobal() : ResOrErr.get());
+    } else if (ClPrintInlining) {
+      auto ResOrErr = Symbolizer.symbolizeInlinedCode(ModuleName, ModuleOffset);
+      Printer << (error(ResOrErr.getError()) ? DIInliningInfo()
+                                             : ResOrErr.get());
+    } else {
+      auto ResOrErr = Symbolizer.symbolizeCode(ModuleName, ModuleOffset);
+      Printer << (error(ResOrErr.getError()) ? DILineInfo() : ResOrErr.get());
     }
-    outs() << Result << "\n";
+    outs() << "\n";
     outs().flush();
   }