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8524dc53fd
[builtins][AArch64] Implement _sync out-of-line atomics Whilst Clang does not use these, recent GCC does, and so on systems such as FreeBSD that wish to use compiler-rt as the system runtime library but also wish to support building programs with GCC these interfaces are needed. This is a light adaptation of the code committed to GCC by Sebastian Pop <spop@amazon.com>, relicensed with permission for use in compiler-rt. Fixes https://github.com/llvm/llvm-project/issues/63483 Reviewed By: sebpop, MaskRay Differential Revision: https://reviews.llvm.org/D158536 Reviewed by: dim MFC after: 1 week Differential Revision: https://reviews.freebsd.org/D41716
49 lines
1.2 KiB
Makefile
49 lines
1.2 KiB
Makefile
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.include <src.opts.mk>
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PACKAGE= lib${LIB}
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LIB= compiler_rt
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MK_SSP= no
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NO_PIC=
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WARNS?= 2
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CFLAGS+= ${PICFLAG}
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CFLAGS+= -fvisibility=hidden
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CFLAGS+= -DVISIBILITY_HIDDEN
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CFLAGS+= -I${SRCTOP}/contrib/llvm-project/libunwind/include
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# gcc has incompatible internal declarations for __divtc3 and __multc3, but has
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# no option to silence its warning, so make warnings non-fatal.
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MK_WERROR.gcc= no
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.include "Makefile.inc"
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# Out-of-line LSE atomics helpers for aarch64
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.if ${MACHINE_CPUARCH} == "aarch64"
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. for pat in cas swp ldadd ldclr ldeor ldset
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. for size in 1 2 4 8 16
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. for model in 1 2 3 4 5
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. if ${pat} == "cas" || ${size} != "16"
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# Use .for to define lse_name, to get a special loop-local variable
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. for lse_name in outline_atomic_${pat}${size}_${model}.S
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CLEANFILES+= ${lse_name}
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STATICOBJS+= ${lse_name:R}.o
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ACFLAGS.${lse_name}+= -DL_${pat} -DSIZE=${size} -DMODEL=${model} -I${CRTSRC}
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${lse_name}: lse.S
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ln -sf ${.ALLSRC} ${.TARGET}
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. endfor # lse_name
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. endif
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. endfor # model
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. endfor # size
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. endfor # pat
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.endif
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.if ${MK_INSTALLLIB} != "no"
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SYMLINKS+= libcompiler_rt.a ${LIBDIR}/libgcc.a
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.endif
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.if ${MK_PROFILE} != "no"
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SYMLINKS+= libcompiler_rt_p.a ${LIBDIR}/libgcc_p.a
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.endif
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.include <bsd.lib.mk>
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