Revert "[sanitizer][esan] Add internal_sigaction_syscall"

This reverts commit r272553.

The iOS build fails to link.

git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@272557 91177308-0d34-0410-b5e6-96231b3b80d8

4 files changed, 1 insertions, 14 deletions

diff --git a/lib/esan/esan.cpp b/lib/esan/esan.cpp
index e6d6aff31..e7399e219 100644
--- a/lib/esan/esan.cpp
+++ b/lib/esan/esan.cpp
@@ -197,9 +197,6 @@ void initializeLibrary(ToolType Tool) {
   }
 
   initializeShadow();
-  if (__esan_which_tool == ESAN_WorkingSet)
-    initializeShadowWorkingSet();
-
   initializeInterceptors();
 
   if (__esan_which_tool == ESAN_CacheFrag) {
diff --git a/lib/esan/esan_interceptors.cpp b/lib/esan/esan_interceptors.cpp
index 7aefeb664..5d4edb51d 100644
--- a/lib/esan/esan_interceptors.cpp
+++ b/lib/esan/esan_interceptors.cpp
@@ -17,7 +17,6 @@
 #include "interception/interception.h"
 #include "sanitizer_common/sanitizer_common.h"
 #include "sanitizer_common/sanitizer_libc.h"
-#include "sanitizer_common/sanitizer_linux.h"
 #include "sanitizer_common/sanitizer_stacktrace.h"
 
 using namespace __esan; // NOLINT
@@ -398,11 +397,6 @@ INTERCEPTOR(int, sigaction, int signum, const struct sigaction *act,
 // This is required to properly use internal_sigaction.
 namespace __sanitizer {
 int real_sigaction(int signum, const void *act, void *oldact) {
-  if (REAL(sigaction) == nullptr) {
-    // With an instrumented allocator, this is called during interceptor init
-    // and we need a raw syscall solution.
-    return internal_sigaction_syscall(signum, act, oldact);
-  }
   return REAL(sigaction)(signum, (const struct sigaction *)act,
                          (struct sigaction *)oldact);
 }
diff --git a/lib/esan/working_set.cpp b/lib/esan/working_set.cpp
index 622fd29e8..9e7520f49 100644
--- a/lib/esan/working_set.cpp
+++ b/lib/esan/working_set.cpp
@@ -182,13 +182,10 @@ static void takeSample(void *Arg) {
   }
 }
 
-// Initialization that must be done before any instrumented code is executed.
-void initializeShadowWorkingSet() {
+void initializeWorkingSet() {
   CHECK(getFlags()->cache_line_size == CacheLineSize);
   registerMemoryFaultHandler();
-}
 
-void initializeWorkingSet() {
   if (getFlags()->record_snapshots) {
     for (u32 i = 0; i < NumFreq; ++i)
       SizePerFreq[i].initialize(CircularBufferSizes[i]);
diff --git a/lib/esan/working_set.h b/lib/esan/working_set.h
index 034dfe6d9..3750a480a 100644
--- a/lib/esan/working_set.h
+++ b/lib/esan/working_set.h
@@ -21,7 +21,6 @@
 namespace __esan {
 
 void initializeWorkingSet();
-void initializeShadowWorkingSet();
 int finalizeWorkingSet();
 void processRangeAccessWorkingSet(uptr PC, uptr Addr, SIZE_T Size,
                                   bool IsWrite);