Author: dim Date: Tue Aug 25 06:49:10 2020 New Revision: 364753 URL: https://svnweb.freebsd.org/changeset/base/364753
Log: Add atomic and bswap functions to libcompiler_rt There have been several mentions on our mailing lists about missing atomic functions in our system libraries (e.g. __atomic_load_8 and friends), and recently I saw __bswapdi2 and __bswapsi2 mentioned too. To address this, add implementations for the functions from compiler-rt to the system compiler support libraries, e.g. libcompiler_rt.a and and libgcc_s.so. This also needs a small fixup in compiler-rt's atomic.c, to ensure that 32-bit mips can build correctly. Bump __FreeBSD_version to make it easier for port maintainers to detect when these functions were added. MFC after: 2 weeks Differential Revision: https://reviews.freebsd.org/D26159 Modified: head/contrib/llvm-project/compiler-rt/lib/builtins/atomic.c head/lib/libcompiler_rt/Makefile.inc head/sys/sys/param.h Modified: head/contrib/llvm-project/compiler-rt/lib/builtins/atomic.c ============================================================================== --- head/contrib/llvm-project/compiler-rt/lib/builtins/atomic.c Tue Aug 25 05:15:40 2020 (r364752) +++ head/contrib/llvm-project/compiler-rt/lib/builtins/atomic.c Tue Aug 25 06:49:10 2020 (r364753) @@ -125,8 +125,8 @@ static __inline Lock *lock_for_pointer(void *ptr) { #define IS_LOCK_FREE_2 __c11_atomic_is_lock_free(2) #define IS_LOCK_FREE_4 __c11_atomic_is_lock_free(4) -/// 32 bit PowerPC doesn't support 8-byte lock_free atomics -#if !defined(__powerpc64__) && defined(__powerpc__) +/// 32 bit MIPS and PowerPC don't support 8-byte lock_free atomics +#if defined(__mips__) || (!defined(__powerpc64__) && defined(__powerpc__)) #define IS_LOCK_FREE_8 0 #else #define IS_LOCK_FREE_8 __c11_atomic_is_lock_free(8) Modified: head/lib/libcompiler_rt/Makefile.inc ============================================================================== --- head/lib/libcompiler_rt/Makefile.inc Tue Aug 25 05:15:40 2020 (r364752) +++ head/lib/libcompiler_rt/Makefile.inc Tue Aug 25 06:49:10 2020 (r364753) @@ -1,5 +1,7 @@ # $FreeBSD$ +.include <bsd.compiler.mk> + CRTARCH= ${MACHINE_CPUARCH:C/amd64/x86_64/} CRTSRC= ${SRCTOP}/contrib/llvm-project/compiler-rt/lib/builtins @@ -18,6 +20,9 @@ SRCF+= ashldi3 SRCF+= ashlti3 SRCF+= ashrdi3 SRCF+= ashrti3 +SRCF+= atomic +SRCF+= bswapdi2 +SRCF+= bswapsi2 SRCF+= clear_cache SRCF+= clzdi2 SRCF+= clzsi2 @@ -120,6 +125,10 @@ SRCF+= umoddi3 SRCF+= umodsi3 SRCF+= umodti3 +.if "${COMPILER_TYPE}" == "clang" +CFLAGS.atomic.c+= -Wno-atomic-alignment +.endif + # Avoid using SSE2 instructions on i386, if unsupported. .if ${MACHINE_CPUARCH} == "i386" && empty(MACHINE_CPU:Msse2) SRCS+= floatdidf.c @@ -212,12 +221,6 @@ CFLAGS+= -DEMIT_SYNC_ATOMICS SRCF+= stdatomic .endif -.if "${COMPILER_TYPE}" == "clang" && \ - (${MACHINE_ARCH} == "powerpc" || ${MACHINE_ARCH} == "powerpcspe") -SRCS+= atomic.c -CFLAGS.atomic.c+= -Wno-atomic-alignment -.endif - .for file in ${SRCF} .if ${MACHINE_ARCH:Marmv[67]*} && (!defined(CPUTYPE) || ${CPUTYPE:M*soft*} == "") \ && exists(${CRTSRC}/${CRTARCH}/${file}vfp.S) @@ -239,19 +242,11 @@ SRCS+= aeabi_memmove.S SRCS+= aeabi_memset.S SRCS+= aeabi_uidivmod.S SRCS+= aeabi_uldivmod.S -SRCS+= bswapdi2.S -SRCS+= bswapsi2.S SRCS+= switch16.S SRCS+= switch32.S SRCS+= switch8.S SRCS+= switchu8.S SRCS+= sync_synchronize.S -.endif - -# On some archs GCC-6.3 requires bswap32 built-in. -.if ${MACHINE_CPUARCH} == "mips" || ${MACHINE_CPUARCH} == "riscv" -SRCS+= bswapdi2.c -SRCS+= bswapsi2.c .endif .if ${MACHINE_ARCH:Mriscv*sf} Modified: head/sys/sys/param.h ============================================================================== --- head/sys/sys/param.h Tue Aug 25 05:15:40 2020 (r364752) +++ head/sys/sys/param.h Tue Aug 25 06:49:10 2020 (r364753) @@ -60,7 +60,7 @@ * in the range 5 to 9. */ #undef __FreeBSD_version -#define __FreeBSD_version 1300112 /* Master, propagated to newvers */ +#define __FreeBSD_version 1300113 /* Master, propagated to newvers */ /* * __FreeBSD_kernel__ indicates that this system uses the kernel of FreeBSD, _______________________________________________ svn-src-head@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/svn-src-head To unsubscribe, send any mail to "svn-src-head-unsubscr...@freebsd.org"
