commit a59dd80f9f48cb750d329d4d4af2d99d72b484d1
author Alex Light <allight@google.com> Wed Jul 02 16:28:08 2014 -0700
committer Andreas Gampe <agampe@google.com> Tue Jul 22 08:24:14 2014 -0700
tree 36958b15842205addaf6d2a13e40823eab47c8bc
parent 84568fdf08f8f476292996ad653b4453d2894d23

Runtime can now be set to require relocation

Add a pair of runtime flags -Xrelocate and -Xnorelocate that can force
the runtime to require that all files that are run are relocated, to
prevent attacks based on the known art base address.

Add support for running patchoat on oat files compiled without an image.

Change run-test to have new --prebuild and --relocate flags.

Bug: 15358152

Change-Id: I91166c62dd1ab80e5cbcb7883a2cd0d56afca32d

build/Android.common_build.mk

diff --git a/build/Android.common_build.mk b/build/Android.common_build.mk
index c39bc5d..353fab1 100644
--- a/build/Android.common_build.mk
+++ b/build/Android.common_build.mk
@@ -207,6 +207,25 @@
   $(error LIBART_IMG_TARGET_BASE_ADDRESS unset)
 endif
 ART_TARGET_CFLAGS := $(art_cflags) -DART_TARGET -DART_BASE_ADDRESS=$(LIBART_IMG_TARGET_BASE_ADDRESS)
+
+ifndef LIBART_IMG_HOST_MIN_BASE_ADDRESS_DELTA
+  LIBART_IMG_HOST_MIN_BASE_ADDRESS_DELTA=-0x1000000
+endif
+ifndef LIBART_IMG_HOST_MAX_BASE_ADDRESS_DELTA
+  LIBART_IMG_HOST_MAX_BASE_ADDRESS_DELTA=0x1000000
+endif
+ART_HOST_CFLAGS += -DART_BASE_ADDRESS_MIN_DELTA=$(LIBART_IMG_HOST_MIN_BASE_ADDRESS_DELTA)
+ART_HOST_CFLAGS += -DART_BASE_ADDRESS_MAX_DELTA=$(LIBART_IMG_HOST_MAX_BASE_ADDRESS_DELTA)
+
+ifndef LIBART_IMG_TARGET_MIN_BASE_ADDRESS_DELTA
+  LIBART_IMG_TARGET_MIN_BASE_ADDRESS_DELTA=-0x1000000
+endif
+ifndef LIBART_IMG_TARGET_MAX_BASE_ADDRESS_DELTA
+  LIBART_IMG_TARGET_MAX_BASE_ADDRESS_DELTA=0x1000000
+endif
+ART_TARGET_CFLAGS += -DART_BASE_ADDRESS_MIN_DELTA=$(LIBART_IMG_TARGET_MIN_BASE_ADDRESS_DELTA)
+ART_TARGET_CFLAGS += -DART_BASE_ADDRESS_MAX_DELTA=$(LIBART_IMG_TARGET_MAX_BASE_ADDRESS_DELTA)
+
 ART_TARGET_LDFLAGS :=
 ifeq ($(TARGET_CPU_SMP),true)
   ART_TARGET_CFLAGS += -DANDROID_SMP=1