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sys: Build arm64 per-thread SSP with GCC

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It has been supported since GCC 9. It is unlikely anything older than
that will build the kernel so mark it as supported by GCC.

Reviewed by:	brooks, jhb
Sponsored by:	Arm Ltd
Differential Revision:	https://reviews.freebsd.org/D45267
This commit is contained in:
Andrew Turner 2024-05-22 08:20:01 +00:00
parent 131c1718c6
commit c2628accc0
1 changed files with 2 additions and 1 deletions
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3
sys/conf/Makefile.arm64
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@ -30,7 +30,8 @@ CFLAGS += -DLINUX_DTS_VERSION=\"${LINUX_DTS_VERSION}\"
PERTHREAD_SSP_ENABLED!= grep PERTHREAD_SSP opt_global.h || true ; echo
.if !empty(PERTHREAD_SSP_ENABLED)
. if ${COMPILER_TYPE} == "clang" && ${COMPILER_VERSION} >= 130000
. if (${COMPILER_TYPE} == "clang" && ${COMPILER_VERSION} >= 130000) || \
${COMPILER_TYPE} == "gcc"
ARM64_SSP_CFLAGS = -mstack-protector-guard=sysreg
ARM64_SSP_CFLAGS += -mstack-protector-guard-reg=sp_el0
ARM64_SSP_CFLAGS += -mstack-protector-guard-offset=0