Date: Thu, 31 Dec 2015 18:29:25 +0000 (UTC) From: Ian Lepore <ian@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r292993 - head/lib/libstand Message-ID: <201512311829.tBVITP0V000865@repo.freebsd.org>
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Author: ian Date: Thu Dec 31 18:29:24 2015 New Revision: 292993 URL: https://svnweb.freebsd.org/changeset/base/292993 Log: When building libstand for arm, don't emit instructions that require relocation fixups unsupported by the self_reloc() code, and don't optimize memcpy/memset using floating point registers, because in a standalone environment nothing has initialized the fpu hardware. Modified: head/lib/libstand/Makefile Modified: head/lib/libstand/Makefile ============================================================================== --- head/lib/libstand/Makefile Thu Dec 31 18:12:35 2015 (r292992) +++ head/lib/libstand/Makefile Thu Dec 31 18:29:24 2015 (r292993) @@ -44,6 +44,12 @@ SRCS+= bcmp.c bcopy.c bzero.c ffs.c memc .if ${MACHINE_CPUARCH} == "arm" .PATH: ${LIBC_SRC}/arm/gen +# Do not generate movt/movw, because the relocation fixup for them does not +# translate to the -Bsymbolic -pie format required by self_reloc() in loader(8). +# Also, the fpu is not available in a standalone environment. +CFLAGS.clang+= -mllvm -arm-use-movt=0 +CFLAGS.clang+= -mfpu=none + # Compiler support functions .PATH: ${LIBSTAND_SRC}/../../contrib/compiler-rt/lib/builtins/ # __clzsi2 and ctzsi2 for various builtin functions
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