From: Jo Van Bulck <jo.vanbulck@cs.kuleuven.be>
To: jarkko@kernel.org, kai.huang@intel.com,
linux-sgx@vger.kernel.org, linux-kernel@vger.kernel.org
Cc: dave.hansen@linux.intel.com, Jo Van Bulck <jo.vanbulck@cs.kuleuven.be>
Subject: [PATCH v4 09/13] selftests/sgx: Specify freestanding environment for enclave compilation
Date: Fri, 25 Aug 2023 15:32:48 +0200 [thread overview]
Message-ID: <20230825133252.9056-10-jo.vanbulck@cs.kuleuven.be> (raw)
In-Reply-To: <20230825133252.9056-1-jo.vanbulck@cs.kuleuven.be>
Use -ffreestanding to assert the enclave compilation targets a
freestanding environment (i.e., without "main" or standard libraries).
This fixes clang reporting "undefined reference to `memset'" after
erroneously optimizing away the provided memset/memcpy implementations.
Still need to instruct the linker from using standard system startup
functions, but drop -nostartfiles as it is implied by -nostdlib.
Signed-off-by: Jo Van Bulck <jo.vanbulck@cs.kuleuven.be>
---
tools/testing/selftests/sgx/Makefile | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/tools/testing/selftests/sgx/Makefile b/tools/testing/selftests/sgx/Makefile
index 2de970f7237c..f96667bdf9f2 100644
--- a/tools/testing/selftests/sgx/Makefile
+++ b/tools/testing/selftests/sgx/Makefile
@@ -14,8 +14,8 @@ endif
INCLUDES := -I$(top_srcdir)/tools/include
HOST_CFLAGS := -Wall -Werror -g $(INCLUDES) -fPIC
HOST_LDFLAGS := -z noexecstack -lcrypto
-ENCL_CFLAGS := -Wall -Werror -static-pie -nostdlib -nostartfiles -fPIE \
- -fno-stack-protector -mrdrnd $(INCLUDES)
+ENCL_CFLAGS := -Wall -Werror -static-pie -nostdlib -ffreestanding -fPIE \
+ -fno-stack-protector -mrdrnd $(INCLUDES)
ENCL_LDFLAGS := -Wl,-T,test_encl.lds,--build-id=none
TEST_CUSTOM_PROGS := $(OUTPUT)/test_sgx
--
2.25.1
next prev parent reply other threads:[~2023-08-25 13:33 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-08-25 13:32 [PATCH v4 00/13] selftests/sgx: Fix compilation errors Jo Van Bulck
2023-08-25 13:32 ` [PATCH v4 01/13] selftests/sgx: Fix uninitialized pointer dereference in error path Jo Van Bulck
2023-08-25 13:32 ` [PATCH v4 02/13] selftests/sgx: Produce static-pie executable for test enclave Jo Van Bulck
2023-08-29 10:55 ` Huang, Kai
2023-08-31 8:49 ` Jo Van Bulck
2023-08-25 13:32 ` [PATCH v4 03/13] selftests/sgx: Handle relocations in " Jo Van Bulck
2023-08-28 13:15 ` Huang, Kai
2023-08-31 12:48 ` Jo Van Bulck
2023-08-25 13:32 ` [PATCH v4 04/13] selftests/sgx: Fix linker script asserts Jo Van Bulck
2023-08-25 13:32 ` [PATCH v4 05/13] selftests/sgx: Include memory clobber for inline asm in test enclave Jo Van Bulck
2023-08-29 11:07 ` Huang, Kai
2023-08-31 8:31 ` Jo Van Bulck
2023-08-25 13:32 ` [PATCH v4 06/13] selftests/sgx: Ensure test enclave buffer is entirely preserved Jo Van Bulck
2023-08-25 13:32 ` [PATCH v4 07/13] selftests/sgx: Ensure expected location of test enclave buffer Jo Van Bulck
2023-08-25 13:32 ` [PATCH v4 08/13] selftests/sgx: Separate linker options Jo Van Bulck
2023-08-25 13:32 ` Jo Van Bulck [this message]
2023-08-27 18:35 ` [PATCH v4 09/13] selftests/sgx: Specify freestanding environment for enclave compilation Jarkko Sakkinen
2023-08-25 13:32 ` [PATCH v4 10/13] selftests/sgx: Fix uninitialized pointer dereferences Jo Van Bulck
2023-08-27 18:36 ` Jarkko Sakkinen
2023-08-31 8:12 ` Jo Van Bulck
2023-08-25 13:32 ` [PATCH v4 11/13] selftests/sgx: Discard unsupported ELF sections Jo Van Bulck
2023-08-25 13:32 ` [PATCH v4 12/13] selftests/sgx: Remove redundant enclave base address save/restore Jo Van Bulck
2023-08-29 11:00 ` Huang, Kai
2023-08-31 8:25 ` Jo Van Bulck
2023-08-25 13:32 ` [PATCH v4 13/13] selftests/sgx: Remove incomplete ABI sanitization code in test enclave Jo Van Bulck
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