diff options
Diffstat (limited to 'recipes-security/optee/optee-os/0001-libutils-provide-empty-__getauxval-implementation.patch')
| -rw-r--r-- | recipes-security/optee/optee-os/0001-libutils-provide-empty-__getauxval-implementation.patch | 62 |
1 files changed, 62 insertions, 0 deletions
diff --git a/recipes-security/optee/optee-os/0001-libutils-provide-empty-__getauxval-implementation.patch b/recipes-security/optee/optee-os/0001-libutils-provide-empty-__getauxval-implementation.patch new file mode 100644 index 00000000..0120f5c2 --- /dev/null +++ b/recipes-security/optee/optee-os/0001-libutils-provide-empty-__getauxval-implementation.patch @@ -0,0 +1,62 @@ +Upstream-Status: Backport +Signed-off-by: Ross Burton <ross.burton@arm.com> + +From 36e784f621bf5d5be9183beba35f39426277c110 Mon Sep 17 00:00:00 2001 +From: Volodymyr Babchuk <volodymyr_babchuk@epam.com> +Date: Tue, 13 Oct 2020 22:45:39 +0300 +Subject: [PATCH 1/3] libutils: provide empty __getauxval() implementation + +Never version of libgcc are built with LSE implementation in mind. To +determine if LSE is available on platform it calls __getauxval(), so in +some cases we can get undefined reference to __getauxval() error. + +Prominent case is libgcc_eh.a library, which is used by C++ TAs. Exception +handler depends on atomic operations, so it tries to call +init_have_lse_atomics() first. This function in turn calls __getauxval(), +which causes linking error. + +In the future we can make __getauxval() to return actual platform +capabilities. + +Signed-off-by: Volodymyr Babchuk <volodymyr_babchuk@epam.com> +Reviewed-by: Jens Wiklander <jens.wiklander@linaro.org> +Reviewed-by: Jerome Forissier <jerome@forissier.org> +--- + lib/libutils/ext/arch/arm/auxval.c | 12 ++++++++++++ + lib/libutils/ext/arch/arm/sub.mk | 1 + + 2 files changed, 13 insertions(+) + create mode 100644 lib/libutils/ext/arch/arm/auxval.c + +diff --git a/lib/libutils/ext/arch/arm/auxval.c b/lib/libutils/ext/arch/arm/auxval.c +new file mode 100644 +index 00000000..98bca850 +--- /dev/null ++++ b/lib/libutils/ext/arch/arm/auxval.c +@@ -0,0 +1,12 @@ ++// SPDX-License-Identifier: BSD-2-Clause ++/* ++ * Copyright (c) 2020, EPAM Systems ++ */ ++ ++#include <compiler.h> ++ ++unsigned long int __getauxval (unsigned long int type); ++unsigned long int __getauxval (unsigned long int type __unused) ++{ ++ return 0; ++} +diff --git a/lib/libutils/ext/arch/arm/sub.mk b/lib/libutils/ext/arch/arm/sub.mk +index dc5eed67..2e779066 100644 +--- a/lib/libutils/ext/arch/arm/sub.mk ++++ b/lib/libutils/ext/arch/arm/sub.mk +@@ -3,6 +3,7 @@ srcs-$(CFG_ARM32_$(sm)) += aeabi_unwind.c + endif + srcs-$(CFG_ARM32_$(sm)) += atomic_a32.S + srcs-$(CFG_ARM64_$(sm)) += atomic_a64.S ++srcs-y += auxval.c + ifneq ($(sm),ldelf) # TA, core + srcs-$(CFG_ARM32_$(sm)) += mcount_a32.S + srcs-$(CFG_ARM64_$(sm)) += mcount_a64.S +-- +2.25.1 + |