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-rw-r--r--tools/testing/selftests/sgx/Makefile2
-rw-r--r--tools/testing/selftests/sgx/test_encl.lds1
-rw-r--r--tools/testing/selftests/sgx/test_encl_bootstrap.S9
3 files changed, 8 insertions, 4 deletions
diff --git a/tools/testing/selftests/sgx/Makefile b/tools/testing/selftests/sgx/Makefile
index 7eb890bdd3f0..8d2ba6adc92b 100644
--- a/tools/testing/selftests/sgx/Makefile
+++ b/tools/testing/selftests/sgx/Makefile
@@ -14,7 +14,7 @@ endif
INCLUDES := -I$(top_srcdir)/tools/include
HOST_CFLAGS := -Wall -Werror -g $(INCLUDES) -fPIC
HOST_LDFLAGS := -z noexecstack -lcrypto
-ENCL_CFLAGS += -Wall -Werror -static -nostdlib -ffreestanding -fPIC \
+ENCL_CFLAGS += -Wall -Werror -static-pie -nostdlib -ffreestanding -fPIE \
-fno-stack-protector -mrdrnd $(INCLUDES)
ENCL_LDFLAGS := -Wl,-T,test_encl.lds,--build-id=none
diff --git a/tools/testing/selftests/sgx/test_encl.lds b/tools/testing/selftests/sgx/test_encl.lds
index a1ec64f7d91f..62d37160f59b 100644
--- a/tools/testing/selftests/sgx/test_encl.lds
+++ b/tools/testing/selftests/sgx/test_encl.lds
@@ -10,6 +10,7 @@ PHDRS
SECTIONS
{
. = 0;
+ __encl_base = .;
.tcs : {
*(.tcs*)
} : tcs
diff --git a/tools/testing/selftests/sgx/test_encl_bootstrap.S b/tools/testing/selftests/sgx/test_encl_bootstrap.S
index e0ce993d3f2c..28fe5d2ac0af 100644
--- a/tools/testing/selftests/sgx/test_encl_bootstrap.S
+++ b/tools/testing/selftests/sgx/test_encl_bootstrap.S
@@ -42,9 +42,12 @@
encl_entry:
# RBX contains the base address for TCS, which is the first address
# inside the enclave for TCS #1 and one page into the enclave for
- # TCS #2. By adding the value of encl_stack to it, we get
- # the absolute address for the stack.
- lea (encl_stack)(%rbx), %rax
+ # TCS #2. First make it relative by substracting __encl_base and
+ # then add the address of encl_stack to get the address for the stack.
+ lea __encl_base(%rip), %rax
+ sub %rax, %rbx
+ lea encl_stack(%rip), %rax
+ add %rbx, %rax
jmp encl_entry_core
encl_dyn_entry:
# Entry point for dynamically created TCS page expected to follow