Date: Tue, 5 Sep 2017 17:35:34 +0000 (UTC) From: Dimitry Andric <dim@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-9@freebsd.org Subject: svn commit: r323190 - stable/9/lib/libcompiler_rt Message-ID: <201709051735.v85HZYQY075389@repo.freebsd.org>
next in thread | raw e-mail | index | archive | help
Author: dim Date: Tue Sep 5 17:35:33 2017 New Revision: 323190 URL: https://svnweb.freebsd.org/changeset/base/323190 Log: MFC r323001: In compiler-rt, a few assembler implementations for i386 floating point conversion functions use SSE2 instructions, but these are not guarded by #ifdef __SSE2__, and there is no implementation using general purpose registers. For these functions, use the generic C variants instead, otherwise they will cause SIGILL on older processors. Reported by: bsdpr@phoe.frmug.org PR: 221733 MFC r323014: Follow-up to r323001: if the actually selected CPUTYPE is capable of SSE2 instructions, we can use them. Suggested by: jkim Modified: stable/9/lib/libcompiler_rt/Makefile Directory Properties: stable/9/ (props changed) stable/9/lib/ (props changed) stable/9/lib/libcompiler_rt/ (props changed) Modified: stable/9/lib/libcompiler_rt/Makefile ============================================================================== --- stable/9/lib/libcompiler_rt/Makefile Tue Sep 5 17:32:14 2017 (r323189) +++ stable/9/lib/libcompiler_rt/Makefile Tue Sep 5 17:35:33 2017 (r323190) @@ -65,15 +65,9 @@ SRCF= absvdi2 \ fixunsxfti \ fixxfdi \ fixxfti \ - floatdidf \ - floatdisf \ - floatdixf \ floattidf \ floattisf \ floattixf \ - floatundidf \ - floatundisf \ - floatundixf \ floatunsidf \ floatunsisf \ floatuntidf \ @@ -125,6 +119,23 @@ SRCF= absvdi2 \ udivti3 \ umoddi3 \ umodti3 + +# Avoid using SSE2 instructions on i386, if unsupported. +.if ${MACHINE_CPUARCH} == "i386" && empty(MACHINE_CPU:Msse2) +SRCS+= floatdidf.c +SRCS+= floatdisf.c +SRCS+= floatdixf.c +SRCS+= floatundidf.c +SRCS+= floatundisf.c +SRCS+= floatundixf.c +.else +SRCF+= floatdidf +SRCF+= floatdisf +SRCF+= floatdixf +SRCF+= floatundidf +SRCF+= floatundisf +SRCF+= floatundixf +.endif # These are already shipped by libc.a on arm and mips .if ${MACHINE_CPUARCH} != "arm" && ${MACHINE_CPUARCH} != "mips"
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?201709051735.v85HZYQY075389>