auto import from //depot/cupcake/@135843

1 files changed, 108 insertions, 0 deletions

diff --git a/emulator/qtools/q2g.cpp b/emulator/qtools/q2g.cpp
new file mode 100644
index 0000000..6b2ae92
--- /dev/null
+++ b/emulator/qtools/q2g.cpp
@@ -0,0 +1,108 @@
+// Copyright 2006 The Android Open Source Project
+
+#include <stdio.h>
+#include <unistd.h>
+#include <stdlib.h>
+#include <inttypes.h>
+#include <assert.h>
+#include "trace_reader.h"
+#include "gtrace.h"
+#include "bitvector.h"
+#include "parse_options.h"
+
+struct symbol {
+  int		filenum;	// the file number (for gtrace)
+  int		procnum;	// the procedure number (for gtrace)
+};
+
+typedef TraceReader<symbol> TraceReaderType;
+
+#include "parse_options-inl.h"
+
+const int kMaxProcNum = 4095;
+int next_filenum = 1;
+int next_procnum = 1;
+
+void Usage(const char *program)
+{
+  fprintf(stderr, "Usage: %s [options] trace_file elf_file gtrace_file\n",
+          program);
+  OptionsUsage();
+}
+
+int main(int argc, char **argv)
+{
+  ParseOptions(argc, argv);
+  if (argc - optind != 3) {
+    Usage(argv[0]);
+    exit(1);
+  }
+
+  char *qemu_trace_file = argv[optind++];
+  char *elf_file = argv[optind++];
+  char *gtrace_file = argv[optind++];
+  TraceReader<symbol> *trace = new TraceReader<symbol>;
+  trace->Open(qemu_trace_file);
+  trace->ReadKernelSymbols(elf_file);
+  trace->SetRoot(root);
+  TraceHeader *qheader = trace->GetHeader();
+
+  // Get the first valid event to get the process id for the gtrace header.
+  BBEvent event;
+  BBEvent ignored;
+  symbol_type *sym;
+  if (GetNextValidEvent(trace, &event, &ignored, &sym))
+    return 0;
+
+  Gtrace *gtrace = new Gtrace;
+  gtrace->Open(gtrace_file, qheader->pdate, qheader->ptime);
+  gtrace->WriteFirstHeader(qheader->start_sec, event.pid);
+
+  symbol_type *prev_sym = NULL;
+  bool eof = false;
+  while (!eof) {
+    if (sym != prev_sym) {
+      // This procedure is different from the previous procedure.
+
+      // If we have never seen this symbol before, then add it to the
+      // list of known procedures.
+      if (sym->filenum == 0) {
+        sym->filenum = next_filenum;
+        sym->procnum = next_procnum;
+        gtrace->AddProcedure(sym->filenum, sym->procnum, sym->name);
+        next_procnum += 1;
+        if (next_procnum > kMaxProcNum) {
+          next_filenum += 1;
+          next_procnum = 1;
+        }
+      }
+
+      // If we haven't yet recorded the procedure exit for the previous
+      // procedure, then do it now.
+      if (prev_sym) {
+        gtrace->AddProcExit(prev_sym->filenum, prev_sym->procnum, event.time,
+                            event.pid);
+      }
+
+      // If this is not the terminating record, then record a procedure
+      // entry.
+      if (event.bb_num != 0) {
+        gtrace->AddProcEntry(sym->filenum, sym->procnum, event.time, event.pid);
+        prev_sym = sym;
+      }
+    }
+
+    eof = GetNextValidEvent(trace, &event, &ignored, &sym);
+    if (ignored.time != 0 && prev_sym) {
+      // We read an event that we are ignoring.
+      // If we haven't already recorded a procedure exit, then do so.
+      gtrace->AddProcExit(prev_sym->filenum, prev_sym->procnum, ignored.time,
+                          ignored.pid);
+      prev_sym = NULL;
+    }
+  }
+
+  delete gtrace;
+  delete trace;
+  return 0;
+}