[asan] remove objdump-based tests in favour of much simpler LLVM-ish tests

llvm-svn: 147514

compiler-rt/lib/asan/tests/asan_test.cc

@@ -61,89 +61,6 @@ static inline uint32_t my_rand(uint32_t* state) {
 
 static uint32_t global_seed = 0;
 
-class ObjdumpOfMyself {
- public:
-  explicit ObjdumpOfMyself(const string &binary) {
-    is_correct = true;
-    string objdump_name = APPLE ? "gobjdump" : "objdump";
-    string prog = objdump_name + " -d " + binary;
-    // TODO(glider): popen() succeeds even if the file does not exist.
-    FILE *pipe = popen(prog.c_str(), "r");
-    string objdump;
-    if (pipe) {
-      const int kBuffSize = 4096;
-      char buff[kBuffSize+1];
-      int read_bytes;
-      while ((read_bytes = fread(buff, 1, kBuffSize, pipe)) > 0) {
-        buff[read_bytes] = 0;
-        objdump.append(buff);
-      }
-      pclose(pipe);
-    } else {
-      is_correct = false;
-    }
-    // cut the objdump into functions
-    string fn, next_fn;
-    size_t next_start;
-    for (size_t start = fn_start(objdump, 0, &fn);
-         start != string::npos;
-         start = next_start, fn = next_fn) {
-      next_start = fn_start(objdump, start, &next_fn);
-      // fprintf(stderr, "start: %d next_start = %d fn: %s\n",
-      //        (int)start, (int)next_start, fn.c_str());
-      // Mac OS adds the "_" prefix to function names.
-      if (fn.find(APPLE ? "_Disasm" : "Disasm") == string::npos) {
-        continue;
-      }
-      string fn_body = objdump.substr(start, next_start - start);
-      // fprintf(stderr, "%s:\n%s", fn.c_str(), fn_body.c_str());
-      functions_[fn] = fn_body;
-    }
-  }
-
-  string &GetFuncDisasm(const string &fn) {
-    return functions_[fn];
-  }
-
-  int CountInsnInFunc(const string &fn, const vector<string> &insns) {
-    // Mac OS adds the "_" prefix to function names.
-    string fn_ref = APPLE ? "_" + fn : fn;
-    const string &disasm = GetFuncDisasm(fn_ref);
-    if (disasm.empty()) return -1;
-    size_t counter = 0;
-    for (size_t i = 0; i < insns.size(); i++) {
-      size_t pos = 0;
-      while ((pos = disasm.find(insns[i], pos)) != string::npos) {
-        counter++;
-        pos++;
-      }
-    }
-    return counter;
-  }
-
-  bool IsCorrect() { return is_correct; }
-
- private:
-  size_t fn_start(const string &objdump, size_t start_pos, string *fn) {
-    size_t pos = objdump.find(">:\n", start_pos);
-    if (pos == string::npos)
-      return string::npos;
-    size_t beg = pos;
-    while (beg > 0 && objdump[beg - 1] != '<')
-      beg--;
-    *fn = objdump.substr(beg, pos - beg);
-    return pos + 3;
-  }
-
-  map<string, string> functions_;
-  bool is_correct;
-};
-
-static ObjdumpOfMyself *objdump_of_myself() {
-  static ObjdumpOfMyself *o = new ObjdumpOfMyself(progname);
-  return o;
-}
-
 const size_t kLargeMalloc = 1 << 24;
 
 template<class T>
@@ -1561,76 +1478,6 @@ TEST(AddressSanitizer, StrDupTest) {
   free(strdup(Ident("123")));
 }
 
-TEST(AddressSanitizer, ObjdumpTest) {
-  ObjdumpOfMyself *o = objdump_of_myself();
-  EXPECT_TRUE(o->IsCorrect());
-}
-
-extern "C" {
-__attribute__((noinline))
-static void DisasmSimple() {
-  Ident(0);
-}
-
-__attribute__((noinline))
-static void DisasmParamWrite(int *a) {
-  *a = 1;
-}
-
-__attribute__((noinline))
-static void DisasmParamInc(int *a) {
-  (*a)++;
-}
-
-__attribute__((noinline))
-static void DisasmParamReadIfWrite(int *a) {
-  if (*a)
-    *a = 1;
-}
-
-__attribute__((noinline))
-static int DisasmParamIfReadWrite(int *a, int cond) {
-  int res = 0;
-  if (cond)
-    res = *a;
-  *a = 0;
-  return res;
-}
-
-static int GLOBAL;
-
-__attribute__((noinline))
-static void DisasmWriteGlob() {
-  GLOBAL = 1;
-}
-}  // extern "C"
-
-TEST(AddressSanitizer, DisasmTest) {
-  int a;
-  DisasmSimple();
-  DisasmParamWrite(&a);
-  DisasmParamInc(&a);
-  Ident(DisasmWriteGlob)();
-  DisasmParamReadIfWrite(&a);
-
-  a = 7;
-  EXPECT_EQ(7, DisasmParamIfReadWrite(&a, Ident(1)));
-  EXPECT_EQ(0, a);
-
-  ObjdumpOfMyself *o = objdump_of_myself();
-  vector<string> insns;
-  insns.push_back("ud2");
-  insns.push_back("__asan_report_");
-  EXPECT_EQ(0, o->CountInsnInFunc("DisasmSimple", insns));
-  EXPECT_EQ(1, o->CountInsnInFunc("DisasmParamWrite", insns));
-  EXPECT_EQ(1, o->CountInsnInFunc("DisasmParamInc", insns));
-  EXPECT_EQ(0, o->CountInsnInFunc("DisasmWriteGlob", insns));
-
-  // TODO(kcc): implement these (needs just one __asan_report).
-  EXPECT_EQ(2, o->CountInsnInFunc("DisasmParamReadIfWrite", insns));
-  EXPECT_EQ(2, o->CountInsnInFunc("DisasmParamIfReadWrite", insns));
-}
-
 // Currently we create and poison redzone at right of global variables.
 char glob5[5];
 static char static110[110];