Author: andrew Date: Tue Oct 25 14:04:35 2016 New Revision: 307909 URL: https://svnweb.freebsd.org/changeset/base/307909
Log: Import the Cortex String memcpy and memmove into the kernel. On ThunderX these show a 9-10% reduction in user and system time for a buildworld -j48. Obtained from: ABT Systems Ltd MFC after: 1 week Sponsored by: The FreeBSD Foundation Added: head/sys/arm64/arm64/memcpy.S - copied, changed from r307901, head/contrib/cortex-strings/src/aarch64/memcpy.S head/sys/arm64/arm64/memmove.S - copied, changed from r307901, head/contrib/cortex-strings/src/aarch64/memmove.S Deleted: head/sys/arm64/arm64/bcopy.c Modified: head/sys/conf/files.arm64 Copied and modified: head/sys/arm64/arm64/memcpy.S (from r307901, head/contrib/cortex-strings/src/aarch64/memcpy.S) ============================================================================== --- head/contrib/cortex-strings/src/aarch64/memcpy.S Tue Oct 25 05:45:47 2016 (r307901, copy source) +++ head/sys/arm64/arm64/memcpy.S Tue Oct 25 14:04:35 2016 (r307909) @@ -52,6 +52,9 @@ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ +#include <machine/asm.h> +__FBSDID("$FreeBSD$"); + /* Assumptions: * * ARMv8-a, AArch64, unaligned accesses. @@ -83,14 +86,6 @@ #define L(l) .L ## l - .macro def_fn f p2align=0 - .text - .p2align \p2align - .global \f - .type \f, %function -\f: - .endm - /* Copies are split into 3 main cases: small copies of up to 16 bytes, medium copies of 17..96 bytes which are fully unrolled. Large copies of more than 96 bytes align the destination and use an unrolled loop @@ -100,7 +95,7 @@ well as non-overlapping copies. */ -def_fn memcpy p2align=6 +ENTRY(memcpy) prfm PLDL1KEEP, [src] add srcend, src, count add dstend, dstin, count @@ -221,5 +216,4 @@ L(copy_long): stp B_l, B_h, [dstend, -32] stp C_l, C_h, [dstend, -16] ret - - .size memcpy, . - memcpy +END(memcpy) Copied and modified: head/sys/arm64/arm64/memmove.S (from r307901, head/contrib/cortex-strings/src/aarch64/memmove.S) ============================================================================== --- head/contrib/cortex-strings/src/aarch64/memmove.S Tue Oct 25 05:45:47 2016 (r307901, copy source) +++ head/sys/arm64/arm64/memmove.S Tue Oct 25 14:04:35 2016 (r307909) @@ -52,19 +52,14 @@ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ +#include <machine/asm.h> +__FBSDID("$FreeBSD$"); + /* Assumptions: * * ARMv8-a, AArch64, unaligned accesses */ - .macro def_fn f p2align=0 - .text - .p2align \p2align - .global \f - .type \f, %function -\f: - .endm - /* Parameters and result. */ #define dstin x0 #define src x1 @@ -89,7 +84,12 @@ unrolled loop processes 64 bytes per iteration. */ -def_fn memmove, 6 +ENTRY(bcopy) + /* Switch the input pointers when called as bcopy */ + mov x3, x1 + mov x1, x0 + mov x0, x3 +EENTRY(memmove) sub tmp1, dstin, src cmp count, 96 ccmp tmp1, count, 2, hi @@ -146,5 +146,5 @@ def_fn memmove, 6 stp B_l, B_h, [dstin, 16] stp C_l, C_h, [dstin] 3: ret - - .size memmove, . - memmove +EEND(memmove) +END(bcopy) Modified: head/sys/conf/files.arm64 ============================================================================== --- head/sys/conf/files.arm64 Tue Oct 25 14:01:13 2016 (r307908) +++ head/sys/conf/files.arm64 Tue Oct 25 14:04:35 2016 (r307909) @@ -72,7 +72,6 @@ arm64/acpica/OsdEnvironment.c optional a arm64/acpica/acpi_wakeup.c optional acpi arm64/acpica/pci_cfgreg.c optional acpi pci arm64/arm64/autoconf.c standard -arm64/arm64/bcopy.c standard arm64/arm64/bus_machdep.c standard arm64/arm64/bus_space_asm.S standard arm64/arm64/busdma_bounce.c standard @@ -98,6 +97,8 @@ arm64/arm64/in_cksum.c optional inet | arm64/arm64/locore.S standard no-obj arm64/arm64/machdep.c standard arm64/arm64/mem.c standard +arm64/arm64/memcpy.S standard +arm64/arm64/memmove.S standard arm64/arm64/minidump_machdep.c standard arm64/arm64/mp_machdep.c optional smp arm64/arm64/nexus.c standard @@ -178,7 +179,6 @@ libkern/ffsll.c standard libkern/fls.c standard libkern/flsl.c standard libkern/flsll.c standard -libkern/memmove.c standard libkern/memset.c standard cddl/contrib/opensolaris/common/atomic/aarch64/opensolaris_atomic.S optional zfs | dtrace compile-with "${CDDL_C}" cddl/dev/dtrace/aarch64/dtrace_asm.S optional dtrace compile-with "${DTRACE_S}" _______________________________________________ svn-src-all@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/svn-src-all To unsubscribe, send any mail to "svn-src-all-unsubscr...@freebsd.org"