Date: Fri, 8 Oct 2021 01:16:39 GMT From: Kyle Evans <kevans@FreeBSD.org> To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-branches@FreeBSD.org Subject: git: c6bbaf794d11 - stable/12 - Build the arm64 loader with -ffixed-x18 Message-ID: <202110080116.1981Gd7e010836@gitrepo.freebsd.org>
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The branch stable/12 has been updated by kevans: URL: https://cgit.FreeBSD.org/src/commit/?id=c6bbaf794d11bc2d80b00eda20a0ce761ac9d656 commit c6bbaf794d11bc2d80b00eda20a0ce761ac9d656 Author: Andrew Turner <andrew@FreeBSD.org> AuthorDate: 2020-04-24 10:03:11 +0000 Commit: Kyle Evans <kevans@FreeBSD.org> CommitDate: 2021-10-08 01:15:59 +0000 Build the arm64 loader with -ffixed-x18 This stops the compiler from using the x18 register. Some UEFI implementations assume this will be preserved when calling the Boot Services. (cherry picked from commit a2e2311a40696e39eb24ff4a4d4c0968bba42c8c) --- stand/defs.mk | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/stand/defs.mk b/stand/defs.mk index 9e291639e877..6fba2051301b 100644 --- a/stand/defs.mk +++ b/stand/defs.mk @@ -126,7 +126,7 @@ AFLAGS+= --32 # currently has no /boot/loader, but may soon. CFLAGS+= -ffreestanding ${CFLAGS_NO_SIMD} .if ${MACHINE_CPUARCH} == "aarch64" -CFLAGS+= -mgeneral-regs-only -fPIC +CFLAGS+= -mgeneral-regs-only -ffixed-x18 -fPIC .elif ${MACHINE_CPUARCH} == "riscv" CFLAGS+= -march=rv64imac -mabi=lp64 .else
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