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| H A D | arm.mk | b836bfb07cfeadda4a1d90227ffbf9cec14a726d Tue May 19 01:00:00 UTC 2020 Joshua Watt <JPEWhacker@gmail.com> arm64: Disable outline-atomics when compiling
Disables the automatic detection of LSE (Large System Extension)
instructions when compiling AArch64 code. GCC 10 implements this
detection in libgcc using __getauxval(), which OP-TEE does not
implement.
This requires that the proper -mcpu is passed to GCC so that the code
can be correctly compiled to use either LSE or load-store-exclusive.
Fixes linker errors like the following when compiling with GCC 10:
aarch64-linux-ld.bfd: libgcc.a(lse-init.o):
in function `init_have_lse_atomics':
lse-init.c:44: undefined reference to `__getauxval'
core/arch/arm/kernel/link.mk:38:
recipe for target 'build/core/all_objs.o' failed
Signed-off-by: Joshua Watt <JPEWhacker@gmail.com>
[jf: s/optee doesn't/OP-TEE does not/, replace ?= by := for immediate
evaluation]
Reviewed-by: Jerome Forissier <jerome@forissier.org>
Acked-by: Jens Wiklander <jens.wiklander@linaro.org>
Acked-by: Etienne Carriere <etienne.carriere@linaro.org>
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