[sancov] introducing SANCOV_OPTIONS

Summary:
At this point SANCOV_OPTIONS are not functional but it is our intent
to move here sanitizer coverage flags from various sanitizers _OPTIONS.

Reviewers: kcc

Subscribers: kubabrecka, mgorny

Differential Revision: https://reviews.llvm.org/D28311

git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@291068 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 13 insertions, 4 deletions

diff --git a/lib/sanitizer_common/sanitizer_coverage_libcdep_new.cc b/lib/sanitizer_common/sanitizer_coverage_libcdep_new.cc
index d83b77917..df6d10f81 100644
--- a/lib/sanitizer_common/sanitizer_coverage_libcdep_new.cc
+++ b/lib/sanitizer_common/sanitizer_coverage_libcdep_new.cc
@@ -8,6 +8,7 @@
 //===----------------------------------------------------------------------===//
 // Sanitizer Coverage Controller for Trace PC Guard.
 
+#include "sancov_flags.h"
 #include "sanitizer_allocator_internal.h"
 #include "sanitizer_atomic.h"
 #include "sanitizer_common.h"
@@ -17,6 +18,7 @@ using namespace __sanitizer;
 
 using AddressRange = LoadedModule::AddressRange;
 
+namespace __sancov {
 namespace {
 
 static const u64 Magic64 = 0xC0BFFFFFFFFFFF64ULL;
@@ -96,6 +98,10 @@ static void SanitizerDumpCoverage(const uptr* unsorted_pcs, uptr len) {
   InternalFree(file_path);
   InternalFree(module_name);
   InternalFree(pcs);
+
+  if (sancov_flags()->symbolize) {
+    Printf("TODO(aizatsky): call sancov to symbolize\n");
+  }
 }
 
 // Collects trace-pc guard coverage.
@@ -106,6 +112,8 @@ class TracePcGuardController {
     CHECK(!initialized);
 
     initialized = true;
+    InitializeSancovFlags();
+
     pc_vector.Initialize(0);
   }
 
@@ -140,26 +148,27 @@ class TracePcGuardController {
 static TracePcGuardController pc_guard_controller;
 
 }  // namespace
+}  // namespace __sancov
 
 extern "C" {
 SANITIZER_INTERFACE_ATTRIBUTE void __sanitizer_dump_coverage(  // NOLINT
     const uptr* pcs, uptr len) {
-  return SanitizerDumpCoverage(pcs, len);
+  return __sancov::SanitizerDumpCoverage(pcs, len);
 }
 
 SANITIZER_INTERFACE_ATTRIBUTE SANITIZER_WEAK_ATTRIBUTE void
 __sanitizer_cov_trace_pc_guard(u32* guard) {
   if (!*guard) return;
-  pc_guard_controller.TracePcGuard(guard, GET_CALLER_PC() - 1);
+  __sancov::pc_guard_controller.TracePcGuard(guard, GET_CALLER_PC() - 1);
 }
 
 SANITIZER_INTERFACE_ATTRIBUTE SANITIZER_WEAK_ATTRIBUTE void
 __sanitizer_cov_trace_pc_guard_init(u32* start, u32* end) {
   if (start == end || *start) return;
-  pc_guard_controller.InitTracePcGuard(start, end);
+  __sancov::pc_guard_controller.InitTracePcGuard(start, end);
 }
 
 SANITIZER_INTERFACE_ATTRIBUTE void __sanitizer_dump_trace_pc_guard_coverage() {
-  pc_guard_controller.Dump();
+  __sancov::pc_guard_controller.Dump();
 }
 }  // extern "C"