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 v5 05/13] selftests/sgx: Specify freestanding environment for enclave compilation
Date: Thu, 31 Aug 2023 15:41:36 +0200 [thread overview]
Message-ID: <20230831134144.22686-6-jo.vanbulck@cs.kuleuven.be> (raw)
In-Reply-To: <20230831134144.22686-1-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>
Reviewed-by: Jarkko Sakkinen <jarkko@kernel.org>
---
tools/testing/selftests/sgx/Makefile | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/tools/testing/selftests/sgx/Makefile b/tools/testing/selftests/sgx/Makefile
index dcdd04b322f8..7eb890bdd3f0 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 -nostartfiles -fPIC \
+ENCL_CFLAGS += -Wall -Werror -static -nostdlib -ffreestanding -fPIC \
-fno-stack-protector -mrdrnd $(INCLUDES)
ENCL_LDFLAGS := -Wl,-T,test_encl.lds,--build-id=none
--
2.25.1
next prev parent reply other threads:[~2023-08-31 13:42 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-08-31 13:41 [PATCH v5 00/13] selftests/sgx: Fix compilation errors Jo Van Bulck
2023-08-31 13:41 ` [PATCH v5 01/13] selftests/sgx: Fix uninitialized pointer dereference in error path Jo Van Bulck
2023-08-31 13:41 ` [PATCH v5 02/13] selftests/sgx: Fix uninitialized pointer dereferences in encl_get_entry Jo Van Bulck
2023-09-04 20:27 ` Jarkko Sakkinen
2023-08-31 13:41 ` [PATCH v5 03/13] selftests/sgx: Include memory clobber for inline asm in test enclave Jo Van Bulck
2023-08-31 13:41 ` [PATCH v5 04/13] selftests/sgx: Separate linker options Jo Van Bulck
2023-08-31 13:41 ` Jo Van Bulck [this message]
2023-08-31 23:15 ` [PATCH v5 05/13] selftests/sgx: Specify freestanding environment for enclave compilation Huang, Kai
2023-08-31 13:41 ` [PATCH v5 06/13] selftests/sgx: Remove redundant enclave base address save/restore Jo Van Bulck
2023-08-31 13:41 ` [PATCH v5 07/13] selftests/sgx: Produce static-pie executable for test enclave Jo Van Bulck
2023-08-31 13:41 ` [PATCH v5 08/13] selftests/sgx: Handle relocations in " Jo Van Bulck
2023-08-31 23:13 ` Huang, Kai
2023-08-31 23:26 ` Jo Van Bulck
2023-09-01 0:16 ` Huang, Kai
2023-08-31 13:41 ` [PATCH v5 09/13] selftests/sgx: Fix linker script asserts Jo Van Bulck
2023-08-31 13:41 ` [PATCH v5 10/13] selftests/sgx: Ensure test enclave buffer is entirely preserved Jo Van Bulck
2023-08-31 13:41 ` [PATCH v5 11/13] selftests/sgx: Ensure expected location of test enclave buffer Jo Van Bulck
2023-08-31 13:41 ` [PATCH v5 12/13] selftests/sgx: Discard unsupported ELF sections Jo Van Bulck
2023-09-04 20:33 ` Jarkko Sakkinen
2023-08-31 13:41 ` [PATCH v5 13/13] selftests/sgx: Remove incomplete ABI sanitization code in test enclave Jo Van Bulck
2023-09-04 20:39 ` Jarkko Sakkinen
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20230831134144.22686-6-jo.vanbulck@cs.kuleuven.be \
--to=jo.vanbulck@cs.kuleuven.be \
--cc=dave.hansen@linux.intel.com \
--cc=jarkko@kernel.org \
--cc=kai.huang@intel.com \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-sgx@vger.kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).