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Commit 1264fcc9 authored by Florian Mayer's avatar Florian Mayer
Browse files

[make] Add memtag-stack sanitizer, switch to linker-generated notes. 

This change depends on the following toolchain commit:
https://reviews.llvm.org/D118948

Bug: b/174878242

Change-Id: Id67503a5c0983c9ae6fc29f158f4d20bca778e9f
parent a52c09d2

core/config_sanitizers.mk

+23 −12
Original line number Diff line number Diff line
@@ -161,9 +161,11 @@ ifeq ($(strip $(ENABLE_CFI)),false) 
  my_sanitize_diag := $(filter-out cfi,$(my_sanitize_diag))

endif



# Also disable CFI if ASAN is enabled.

# Also disable CFI and MTE if ASAN is enabled.

ifneq ($(filter address,$(my_sanitize)),)

  my_sanitize := $(filter-out cfi,$(my_sanitize))

  my_sanitize := $(filter-out memtag_stack,$(my_sanitize))

  my_sanitize := $(filter-out memtag_heap,$(my_sanitize))

  my_sanitize_diag := $(filter-out cfi,$(my_sanitize_diag))

endif
@@ -205,10 +207,13 @@ endif 
ifneq ($(filter arm x86 x86_64,$(TARGET_$(LOCAL_2ND_ARCH_VAR_PREFIX)ARCH)),)

  my_sanitize := $(filter-out hwaddress,$(my_sanitize))

  my_sanitize := $(filter-out memtag_heap,$(my_sanitize))

  my_sanitize := $(filter-out memtag_stack,$(my_sanitize))

endif



ifneq ($(filter hwaddress,$(my_sanitize)),)

  my_sanitize := $(filter-out address,$(my_sanitize))

  my_sanitize := $(filter-out memtag_stack,$(my_sanitize))

  my_sanitize := $(filter-out memtag_heap,$(my_sanitize))

  my_sanitize := $(filter-out thread,$(my_sanitize))

  my_sanitize := $(filter-out cfi,$(my_sanitize))

endif
@@ -224,21 +229,27 @@ ifneq ($(filter hwaddress,$(my_sanitize)),) 
  endif

endif



ifneq ($(filter memtag_heap,$(my_sanitize)),)

  # Add memtag ELF note.

  ifneq ($(filter EXECUTABLES NATIVE_TESTS,$(LOCAL_MODULE_CLASS)),)

ifneq ($(filter memtag_heap memtag_stack,$(my_sanitize)),)

  ifneq ($(filter memtag_heap,$(my_sanitize_diag)),)

      my_whole_static_libraries += note_memtag_heap_sync

    my_cflags += -fsanitize-memtag-mode=sync

    my_sanitize_diag := $(filter-out memtag_heap,$(my_sanitize_diag))

  else

      my_whole_static_libraries += note_memtag_heap_async

    my_cflags += -fsanitize-memtag-mode=async

  endif

endif

  # This is all that memtag_heap does - it is not an actual -fsanitize argument.

  # Remove it from the list.



ifneq ($(filter memtag_heap,$(my_sanitize)),)

  my_cflags += -fsanitize=memtag-heap

  my_sanitize := $(filter-out memtag_heap,$(my_sanitize))

endif



my_sanitize_diag := $(filter-out memtag_heap,$(my_sanitize_diag))

ifneq ($(filter memtag_stack,$(my_sanitize)),)

  my_cflags += -fsanitize=memtag-stack

  my_cflags += -march=armv8a+memtag

  my_ldflags += -march=armv8a+memtag

  my_asflags += -march=armv8a+memtag

  my_sanitize := $(filter-out memtag_stack,$(my_sanitize))

endif



# TSAN is not supported on 32-bit architectures. For non-multilib cases, make

# its use an error. For multilib cases, don't use it for the 32-bit case.