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| author |   Ross Burton <ross.burton@arm.com> | 2023-07-13 12:01:19 +0100 |
|---|---|---|
| committer |   Richard Purdie <richard.purdie@linuxfoundation.org> | 2023-07-14 17:01:18 +0100 |
| commit | 8905639d1cdc5ce809cc5ecd9672f5e86bf8a579 (patch) | |
| tree | 0f1720a1454492bdbc5c8822d59ebc64d159cf2f /meta/conf/machine | |
| parent | bb4b9017db6a893ed054a2d2ad4cc671dec09c42 (diff) | |
| download | openembedded-core-8905639d1cdc5ce809cc5ecd9672f5e86bf8a579.tar.gz | |
machine/arch-arm64: add -mbranch-protection=standard
Enable branch protection (PAC/BTI) for all aarch64 builds. This was
previously enabled at a global level in the GCC build, but that breaks
the gcc test suite.
Signed-off-by: Ross Burton <ross.burton@arm.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
Diffstat (limited to 'meta/conf/machine')
| -rw-r--r-- | meta/conf/machine/include/arm/arch-arm64.inc | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/meta/conf/machine/include/arm/arch-arm64.inc b/meta/conf/machine/include/arm/arch-arm64.inc index 0e2efb5a40..832d0000ac 100644 --- a/meta/conf/machine/include/arm/arch-arm64.inc +++ b/meta/conf/machine/include/arm/arch-arm64.inc @@ -37,3 +37,8 @@ TUNE_ARCH = "${@bb.utils.contains('TUNE_FEATURES', 'aarch64', '${TUNE_ARCH_64}', TUNE_PKGARCH = "${@bb.utils.contains('TUNE_FEATURES', 'aarch64', '${TUNE_PKGARCH_64}', '${TUNE_PKGARCH_32}', d)}" ABIEXTENSION = "${@bb.utils.contains('TUNE_FEATURES', 'aarch64', '${ABIEXTENSION_64}', '${ABIEXTENSION_32}', d)}" TARGET_FPU = "${@bb.utils.contains('TUNE_FEATURES', 'aarch64', '${TARGET_FPU_64}', '${TARGET_FPU_32}', d)}" + +# Emit branch protection (PAC/BTI) instructions. On hardware that doesn't +# support these they're meaningless NOP instructions, so there's very little +# reason not to. +TUNE_CCARGS .= "${@bb.utils.contains('TUNE_FEATURES', 'aarch64', ' -mbranch-protection=standard', '', d)}" |