@@ -1,5 +1,24 @@
2017-12-11 Jose E. Marchesi <jose.marchesi@oracle.com>
+ * sysdeps/sparc/sparc32/sparcv9/multiarch/Makefile
+ (sysdeps_routines): Add memcpy-memmove-niagara7 and memmove-ultra1.
+ * sysdeps/sparc/sparc64/multiarch/Makefile (sysdeps_routines):
+ Likewise.
+ * sysdeps/sparc/sparc32/sparcv9/multiarch/memcpy-memmove-niagara7.S:
+ New file.
+ * sysdeps/sparc/sparc32/sparcv9/multiarch/memmove-ultra1.S: Likewise.
+ * sysdeps/sparc/sparc32/sparcv9/multiarch/rtld-memmove.c: Likewise.
+ * sysdeps/sparc/sparc64/multiarch/ifunc-impl-list.c
+ (__libc_ifunc_impl_list): Add __memcpy_niagara7, __mempcpy_niagara7,
+ and __memmove_niagara7.
+ * sysdeps/sparc/sparc64/multiarch/ifunc-memcpy.h (IFUNC_SELECTOR):
+ Add niagara7 option.
+ * sysdeps/sparc/sparc64/multiarch/ifunc-memmove.c: New file.
+ * sysdeps/sparc/sparc64/multiarch/ifunc-memmove.h: Likewise.
+ * sysdeps/sparc/sparc64/multiarch/memcpy-memmove-niagara7.S: Likewise.
+ * sysdeps/sparc/sparc64/multiarch/memmove-ultra1.S: Likewise.
+ * sysdeps/sparc/sparc64/multiarch/rtld-memmove.c: Likewise.
+
* sysdeps/sparc/sparc32/sparcv9/memmove.S: New file.
* sysdeps/sparc/sparc32/sparcv9/rtld-memmove.c: Likewise.
* sysdeps/sparc/sparc64/memmove.S: Likewise.
@@ -9,5 +9,6 @@ endif
ifeq ($(subdir),string)
sysdep_routines += memcpy-ultra3 memcpy-niagara1 memcpy-niagara2 \
memset-niagara1 memcpy-niagara4 memset-niagara4 \
- memcpy-ultra1 memset-ultra1
+ memcpy-ultra1 memset-ultra1 memcpy-memmove-niagara7 \
+ memmove-ultra1
endif
new file mode 100644
@@ -0,0 +1,2 @@
+#define XCC icc
+#include <sparc64/multiarch/memcpy-memmove-niagara7.S>
new file mode 100644
@@ -0,0 +1,4 @@
+#undef libc_hidden_builtin_def
+#define libc_hidden_builtin_def(name)
+#define memmove __memmove_ultra1
+#include <sysdeps/sparc/sparc32/sparcv9/memmove.S>
new file mode 100644
@@ -0,0 +1 @@
+#include <sparc64/multiarch/rtld-memmove.c>
@@ -9,7 +9,8 @@ endif
ifeq ($(subdir),string)
sysdep_routines += memcpy-ultra3 memcpy-niagara1 memcpy-niagara2 \
memset-niagara1 memcpy-niagara4 memset-niagara4 \
- memcpy-ultra1 memset-ultra1
+ memcpy-ultra1 memset-ultra1 memcpy-memmove-niagara7 \
+ memmove-ultra1
endif
ifeq ($(subdir),stdlib)
@@ -36,6 +36,8 @@ __libc_ifunc_impl_list (const char *name, struct libc_ifunc_impl *array,
hwcap = GLRO(dl_hwcap);
IFUNC_IMPL (i, name, memcpy,
+ IFUNC_IMPL_ADD (array, i, memcpy, hwcap & HWCAP_SPARC_ADP,
+ __memcpy_niagara7)
IFUNC_IMPL_ADD (array, i, memcpy, hwcap & HWCAP_SPARC_CRYPTO,
__memcpy_niagara4)
IFUNC_IMPL_ADD (array, i, memcpy, hwcap & HWCAP_SPARC_N2,
@@ -47,6 +49,8 @@ __libc_ifunc_impl_list (const char *name, struct libc_ifunc_impl *array,
IFUNC_IMPL_ADD (array, i, memcpy, 1, __memcpy_ultra1));
IFUNC_IMPL (i, name, mempcpy,
+ IFUNC_IMPL_ADD (array, i, mempcpy, hwcap & HWCAP_SPARC_ADP,
+ __mempcpy_niagara7)
IFUNC_IMPL_ADD (array, i, mempcpy, hwcap & HWCAP_SPARC_CRYPTO,
__mempcpy_niagara4)
IFUNC_IMPL_ADD (array, i, mempcpy, hwcap & HWCAP_SPARC_N2,
@@ -71,5 +75,10 @@ __libc_ifunc_impl_list (const char *name, struct libc_ifunc_impl *array,
__memset_niagara1)
IFUNC_IMPL_ADD (array, i, memset, 1, __memset_ultra1));
+ IFUNC_IMPL (i, name, memmove,
+ IFUNC_IMPL_ADD (array, i, memmove, hwcap & HWCAP_SPARC_ADP,
+ __memmove_niagara7)
+ IFUNC_IMPL_ADD (array, i, memmove, 1, __memmove_ultra1));
+
return i;
}
@@ -19,6 +19,7 @@
#include <ifunc-init.h>
+extern __typeof (REDIRECT_NAME) OPTIMIZE (niagara7) attribute_hidden;
extern __typeof (REDIRECT_NAME) OPTIMIZE (niagara4) attribute_hidden;
extern __typeof (REDIRECT_NAME) OPTIMIZE (niagara2) attribute_hidden;
extern __typeof (REDIRECT_NAME) OPTIMIZE (niagara1) attribute_hidden;
@@ -28,6 +29,8 @@ extern __typeof (REDIRECT_NAME) OPTIMIZE (ultra1) attribute_hidden;
static inline void *
IFUNC_SELECTOR (int hwcap)
{
+ if (hwcap & HWCAP_SPARC_ADP)
+ return OPTIMIZE (niagara7);
if (hwcap & HWCAP_SPARC_CRYPTO)
return OPTIMIZE (niagara4);
if (hwcap & HWCAP_SPARC_N2)
new file mode 100644
@@ -0,0 +1,31 @@
+/* Common definition for memmove implementation.
+ All versions must be listed in ifunc-impl-list.c.
+ Copyright (C) 2017 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <http://www.gnu.org/licenses/>. */
+
+#include <ifunc-init.h>
+
+extern __typeof (REDIRECT_NAME) OPTIMIZE (niagara7) attribute_hidden;
+extern __typeof (REDIRECT_NAME) OPTIMIZE (ultra1) attribute_hidden;
+
+static inline void *
+IFUNC_SELECTOR (int hwcap)
+{
+ if (hwcap & HWCAP_SPARC_ADP)
+ return OPTIMIZE (niagara7);
+ return OPTIMIZE (ultra1);
+}
new file mode 100644
@@ -0,0 +1,980 @@
+/* Copy SIZE bytes from SRC to DEST. For SUN4V M7.
+ Copyright (C) 2017 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <http://www.gnu.org/licenses/>. */
+
+#include <sysdep.h>
+
+#ifndef XCC
+# define XCC xcc
+#endif
+ .register %g2,#scratch
+ .register %g3,#scratch
+ .register %g6,#scratch
+
+#define FPRS_FEF 0x04
+
+/*
+ * ASI_STBI_P marks the cache line as "least recently used"
+ * which means if many threads are active, it has a high chance
+ * of being pushed out of the cache between the first initializing
+ * store and the final stores.
+ * Thus, in this algorithm we use ASI_STBIMRU_P which marks the
+ * cache line as "most recently used" for all but the last cache
+ * line.
+ */
+
+#define ASI_BLK_INIT_QUAD_LDD_P 0xe2
+#define ASI_ST_BLK_INIT_MRU_P 0xf2
+
+#define ASI_STBI_P ASI_BLK_INIT_QUAD_LDD_P
+#define ASI_STBIMRU_P ASI_ST_BLK_INIT_MRU_P
+
+#define BLOCK_SIZE 64 /* L2 data cache line size */
+#define SHORTCOPY 3
+#define SHORTCHECK 14
+#define SHORT_LONG 64 /* max copy for short longword-aligned case */
+ /* must be at least 64 */
+#define SMALL_MAX 255 /* max small copy for word/long aligned */
+#define SMALL_UMAX 128 /* max small copy for unaligned case */
+#define MED_WMAX 1023 /* max copy for medium word-aligned case */
+#define MED_MAX 511 /* max copy for medium longword-aligned case */
+#define ST_CHUNK 20 /* ST_CHUNK - block of values for BIS Store */
+/* on T4, prefetch 20 is a strong read prefetch to L1 and L2 data cache
+ * prefetch 20 can cause inst pipeline to delay if data is in memory
+ * prefetch 21 is a strong read prefetch to L2 data cache, not L1 data cache */
+#define ALIGN_PRE 20 /* distance for aligned prefetch loop */
+
+#define EX_ST(x) x
+#define EX_RETVAL(x) x
+#define STORE_ASI(src,addr) stxa src, [addr] ASI_STBIMRU_P
+#define STORE_INIT(src,addr) stxa src, [addr] ASI_STBI_P
+
+#if IS_IN (libc)
+
+ .text
+
+ENTRY(__memmove_niagara7)
+ /* %o0=dst, %o1=src, %o2=len */
+ cmp %o1, %o0 /* if from address is >= to use forward copy */
+ bgeu,pn %XCC, .Lforcpy /* else use backward if ... */
+ sub %o0, %o1, %o4 /* get difference of two addresses */
+ cmp %o2, %o4 /* compare size and difference of addresses */
+ bleu,pn %XCC, .Lforcpy /* if size is bigger, do overlapped copy */
+ add %o1, %o2, %o5 /* get to end of source space */
+
+/* an overlapped copy that must be done "backwards" */
+.Lchksize:
+ cmp %o2, 8 /* less than 8 byte do byte copy */
+ blu,pn %XCC, 2f /* else continue */
+
+/* Now size is bigger than 8 */
+.Ldbalign:
+ add %o0, %o2, %g1 /* get to end of dest space */
+ andcc %g1, 7, %o3 /* %o3 has cnt til dst 8 byte align */
+ bz,a,pn %XCC, .Ldbbck /* skip if dst is 8 byte aligned */
+ andn %o2, 7, %o3 /* force %o3 cnt to multiple of 8 */
+ sub %o2, %o3, %o2 /* update o2 with new count */
+
+1: dec %o5 /* decrement source */
+ ldub [%o5], %g1 /* load one byte */
+ deccc %o3 /* decrement count */
+ bgu,pt %XCC, 1b /* if not done keep copying */
+ stb %g1, [%o5+%o4] /* store one byte into dest */
+ andncc %o2, 7, %o3 /* force %o3 cnt to multiple of 8 */
+ bz,pn %XCC, 2f /* if size < 8, move to byte copy */
+
+/* Now Destination is 8 byte aligned */
+.Ldbbck:
+ andcc %o5, 7, %o0 /* %o0 has src offset */
+ bz,a,pn %XCC, .Ldbcopybc /* if src is aligned do fast memmove */
+ sub %o2, %o3, %o2 /* Residue bytes in %o2 */
+
+.Lcpy_dbwdbc: /* alignment of src is needed */
+ sub %o2, 8, %o2 /* set size one loop ahead */
+ sll %o0, 3, %g1 /* %g1 is left shift */
+ mov 64, %g5 /* init %g5 to be 64 */
+ sub %g5, %g1, %g5 /* %g5 rightshift = (64 - leftshift) */
+ sub %o5, %o0, %o5 /* align the src at 8 bytes. */
+ add %o4, %o0, %o4 /* increase diff between src & dst */
+ ldx [%o5], %o1 /* load first 8 bytes */
+ srlx %o1, %g5, %o1
+1: sub %o5, 8, %o5 /* subtract 8 from src */
+ ldx [%o5], %o0 /* load 8 byte */
+ sllx %o0, %g1, %o3 /* shift loaded val left to tmp reg */
+ or %o1, %o3, %o3 /* align data */
+ stx %o3, [%o5+%o4] /* store 8 byte */
+ subcc %o2, 8, %o2 /* subtract 8 byte from size */
+ bg,pt %XCC, 1b /* if size > 0 continue */
+ srlx %o0, %g5, %o1 /* move extra byte for the next use */
+
+ srl %g1, 3, %o0 /* restore %o0 value for alignment */
+ add %o5, %o0, %o5 /* restore src alignment */
+ sub %o4, %o0, %o4 /* restore diff between src & dest */
+
+ ba 2f /* branch to the trailing byte copy */
+ add %o2, 8, %o2 /* restore size value */
+
+.Ldbcopybc: /* alignment of src is not needed */
+1: sub %o5, 8, %o5 /* subtract from src */
+ ldx [%o5], %g1 /* load 8 bytes */
+ subcc %o3, 8, %o3 /* subtract from size */
+ bgu,pt %XCC, 1b /* if size is bigger 0 continue */
+ stx %g1, [%o5+%o4] /* store 8 bytes to destination */
+
+ ba 2f
+ nop
+
+.Lbcbyte:
+1: ldub [%o5], %g1 /* load one byte */
+ stb %g1, [%o5+%o4] /* store one byte */
+2: deccc %o2 /* decrement size */
+ bgeu,a,pt %XCC, 1b /* if size is >= 0 continue */
+ dec %o5 /* decrement from address */
+
+.Lexitbc: /* exit from backward copy */
+ retl
+ add %o5, %o4, %o0 /* restore dest addr */
+
+
+/* Check to see if memmove is large aligned copy
+ * If so, use special version of copy that avoids
+ * use of block store init. */
+.Lforcpy:
+ cmp %o2, SMALL_MAX /* check for not small case */
+ blt,pn %XCC, .Lmv_short /* merge with memcpy */
+ mov %o0, %g1 /* save %o0 */
+ neg %o0, %o5
+ andcc %o5, 7, %o5 /* bytes till DST 8 byte aligned */
+ brz,pt %o5, .Lmv_dst_aligned_on_8
+
+/* %o5 has the bytes to be written in partial store. */
+ sub %o2, %o5, %o2
+ sub %o1, %o0, %o1 /* %o1 gets the difference */
+7: /* dst aligning loop */
+ ldub [%o1+%o0], %o4 /* load one byte */
+ subcc %o5, 1, %o5
+ stb %o4, [%o0]
+ bgu,pt %XCC, 7b
+ add %o0, 1, %o0 /* advance dst */
+ add %o1, %o0, %o1 /* restore %o1 */
+.Lmv_dst_aligned_on_8:
+ andcc %o1, 7, %o5
+ brnz,pn %o5, .Lsrc_dst_unaligned_on_8
+ prefetch [%o1 + (1 * BLOCK_SIZE)], 20
+
+.Lmv_src_dst_aligned_on_8:
+/* check if we are copying MED_MAX or more bytes */
+ cmp %o2, MED_MAX /* limit to store buffer size */
+ bleu,pt %XCC, .Lmedlong
+ prefetch [%o1 + (2 * BLOCK_SIZE)], 20
+
+/* The mv_align loop below mimics the memcpy code for large aligned copies,
+ * but does not use the ASI_STBI_P (block initializing store) performance
+ * optimization. This is used when memcpy is incorrectly invoked with
+ * overlapping buffers. */
+
+.Lmv_large_align8_copy: /* Src and dst share 8 byte align */
+ /* align dst to 64 byte boundary */
+ andcc %o0, 0x3f, %o3 /* check for dst 64 byte aligned */
+ brz,pn %o3, .Lmv_aligned_on_64
+ sub %o3, 64, %o3 /* %o3 has negative bytes to move */
+ add %o2, %o3, %o2 /* adjust remaining count */
+.Lmv_align_to_64:
+ ldx [%o1], %o4
+ add %o1, 8, %o1 /* increment src ptr */
+ addcc %o3, 8, %o3
+ stx %o4, [%o0]
+ brnz,pt %o3, .Lmv_align_to_64
+ add %o0, 8, %o0 /* increment dst ptr */
+
+.Lmv_aligned_on_64:
+ andn %o2, 0x3f, %o5 /* %o5 is multiple of block size */
+ and %o2, 0x3f, %o2 /* residue bytes in %o2 */
+.Lmv_align_loop:
+ ldx [%o1],%o4
+ stx %o4,[%o0]
+ prefetch [%o0 + (10 * BLOCK_SIZE)], 22
+ prefetch [%o1 + (10 * BLOCK_SIZE)], 21
+ subcc %o5, 64, %o5
+ ldx [%o1+8],%o4
+ stx %o4,[%o0+8]
+ ldx [%o1+16],%o4
+ stx %o4,[%o0+16]
+ ldx [%o1+24],%o4
+ stx %o4,[%o0+24]
+ ldx [%o1+32],%o4
+ stx %o4,[%o0+32]
+ ldx [%o1+40],%o4
+ stx %o4,[%o0+40]
+ ldx [%o1+48],%o4
+ add %o1, 64, %o1
+ stx %o4,[%o0+48]
+ add %o0, 64, %o0
+ ldx [%o1-8],%o4
+ bgt,pt %XCC, .Lmv_align_loop
+ stx %o4,[%o0-8]
+
+ ba .Lmedlong
+ nop
+END(__memmove_niagara7)
+
+ENTRY(__mempcpy_niagara7)
+ /* %o0=dst, %o1=src, %o2=len */
+ ba,pt %icc, 101f
+ add %o0, %o2, %g1 /* save dst + len */
+END(__mempcpy_niagara7)
+
+ .align 32
+ENTRY(__memcpy_niagara7)
+100: /* %o0=dst, %o1=src, %o2=len */
+ mov %o0, %g1 /* save %o0 */
+101:
+#ifndef __arch64__
+ srl %o2, 0, %o2
+#endif
+ cmp %o2, SMALL_MAX /* check for not small case */
+ bgeu,pn %XCC, .Lmedium /* go to larger cases */
+.Lmv_short:
+ cmp %o2, SHORTCOPY /* check for really short case */
+ ble,pn %XCC, .Lsmallfin
+ or %o0, %o1, %o4 /* prepare alignment check */
+ andcc %o4, 0x3, %o5 /* test for word alignment */
+ bnz,pn %XCC, .Lsmallunalign /* branch to non-word aligned case */
+ nop
+ subcc %o2, 7, %o2 /* adjust count */
+ ble,pn %XCC, .Lsmallwordx
+ andcc %o4, 0x7, %o5 /* test for long alignment */
+/* 8 or more bytes, src and dest start on word boundary
+ * %o4 contains or %o0, %o1 */
+.Lsmalllong:
+ bnz,pn %XCC, .Lsmallwords /* branch to word aligned case */
+ cmp %o2, SHORT_LONG-7
+ bge,a %XCC, .Lmedl64 /* if we branch */
+ sub %o2,56,%o2 /* adjust %o2 to -63 off count */
+
+/* slightly unroll the small_long_loop to improve very short copies */
+ cmp %o2, 32-7
+ blt,a,pn %XCC, .Lsmall_long_l
+ sub %o1, %o0, %o1 /* %o1 gets the difference */
+
+ ldx [%o1], %o5
+ ldx [%o1+8], %o4
+ ldx [%o1+16], %o3
+
+ subcc %o2, 24, %o2
+ sub %o1, %o0, %o1 /* %o1 gets the difference */
+
+ stx %o5, [%o0] /* write word */
+ stx %o4, [%o0+8] /* write word */
+ stx %o3, [%o0+16] /* write word */
+
+ add %o0, 24, %o0
+
+/* end loop unroll */
+
+.Lsmall_long_l:
+ ldx [%o1+%o0], %o3
+ subcc %o2, 8, %o2
+ add %o0, 8, %o0
+ bgu,pn %XCC, .Lsmall_long_l /* loop until done */
+ stx %o3, [%o0-8] /* write word */
+ addcc %o2, 7, %o2 /* restore %o2 to correct count */
+ bnz,pn %XCC, .Lsmall_long_x /* check for completion */
+ add %o1, %o0, %o1 /* restore %o1 */
+ retl
+ mov EX_RETVAL(%g1), %o0 /* restore %o0 */
+.Lsmall_long_x:
+ cmp %o2, 4 /* check for 4 or more bytes left */
+ blt,pn %XCC, .Lsmallleft3 /* if not, go to finish up */
+ nop
+ lduw [%o1], %o3
+ add %o1, 4, %o1
+ subcc %o2, 4, %o2
+ stw %o3, [%o0]
+ bnz,pn %XCC, .Lsmallleft3
+ add %o0, 4, %o0
+ retl
+ mov EX_RETVAL(%g1), %o0 /* restore %o0 */
+
+ .align 32
+/* src and dest start on word boundary; 7 or fewer bytes */
+.Lsmallwordx:
+ lduw [%o1], %o3 /* read word */
+ addcc %o2, 3, %o2 /* restore count */
+ bz,pt %XCC, .Lsmallexit
+ stw %o3, [%o0] /* write word */
+ deccc %o2 /* reduce count for cc test */
+ ldub [%o1+4], %o3 /* load one byte */
+ bz,pt %XCC, .Lsmallexit
+ stb %o3, [%o0+4] /* store one byte */
+ ldub [%o1+5], %o3 /* load second byte */
+ deccc %o2
+ bz,pt %XCC, .Lsmallexit
+ stb %o3, [%o0+5] /* store second byte */
+ ldub [%o1+6], %o3 /* load third byte */
+ stb %o3, [%o0+6] /* store third byte */
+.Lsmallexit:
+ retl
+ mov EX_RETVAL(%g1), %o0 /* restore %o0 */
+
+ .align 32
+.Lsmallunalign:
+ cmp %o2, SHORTCHECK
+ ble,pn %XCC, .Lsmallrest
+ cmp %o2, SMALL_UMAX
+ bge,pt %XCC, .Lmedium_join
+ andcc %o1, 0x3, %o5 /* is src word aligned */
+ bz,pn %XCC, .Laldst
+ cmp %o5, 2 /* is src half-word aligned */
+ be,pt %XCC, .Ls2algn
+ cmp %o5, 3 /* src is byte aligned */
+.Ls1algn:
+ ldub [%o1], %o3 /* move 1 or 3 bytes to align it */
+ inc 1, %o1
+ stb %o3, [%o0] /* move a byte to align src */
+ inc 1, %o0
+ bne,pt %XCC, .Ls2algn
+ dec %o2
+ b .Lald /* now go align dest */
+ andcc %o0, 0x3, %o5
+
+.Ls2algn:
+ lduh [%o1], %o3 /* know src is 2 byte aligned */
+ inc 2, %o1
+ srl %o3, 8, %o4
+ stb %o4, [%o0] /* have to do bytes, */
+ stb %o3, [%o0 + 1] /* do not know dst alignment */
+ inc 2, %o0
+ dec 2, %o2
+
+.Laldst:
+ andcc %o0, 0x3, %o5 /* align the destination address */
+.Lald:
+ bz,pn %XCC, .Lw4cp
+ cmp %o5, 2
+ be,pn %XCC, .Lw2cp
+ cmp %o5, 3
+.Lw3cp: lduw [%o1], %o4
+ inc 4, %o1
+ srl %o4, 24, %o5
+ stb %o5, [%o0]
+ bne,pt %XCC, .Lw1cp
+ inc %o0
+ dec 1, %o2
+ andn %o2, 3, %o3 /* %o3 is aligned word count */
+ dec 4, %o3 /* avoid reading beyond tail of src */
+ sub %o1, %o0, %o1 /* %o1 gets the difference */
+
+1: sll %o4, 8, %g5 /* save residual bytes */
+ lduw [%o1+%o0], %o4
+ deccc 4, %o3
+ srl %o4, 24, %o5 /* merge with residual */
+ or %o5, %g5, %g5
+ st %g5, [%o0]
+ bnz,pt %XCC, 1b
+ inc 4, %o0
+ sub %o1, 3, %o1 /* used one byte of last word read */
+ and %o2, 3, %o2
+ b 7f
+ inc 4, %o2
+
+.Lw1cp: srl %o4, 8, %o5
+ sth %o5, [%o0]
+ inc 2, %o0
+ dec 3, %o2
+ andn %o2, 3, %o3 /* %o3 is aligned word count */
+ dec 4, %o3 /* avoid reading beyond tail of src */
+ sub %o1, %o0, %o1 /* %o1 gets the difference */
+
+2: sll %o4, 24, %g5 /* save residual bytes */
+ lduw [%o1+%o0], %o4
+ deccc 4, %o3
+ srl %o4, 8, %o5 /* merge with residual */
+ or %o5, %g5, %g5
+ st %g5, [%o0]
+ bnz,pt %XCC, 2b
+ inc 4, %o0
+ sub %o1, 1, %o1 /* used 3 bytes of last word read */
+ and %o2, 3, %o2
+ b 7f
+ inc 4, %o2
+
+.Lw2cp: lduw [%o1], %o4
+ inc 4, %o1
+ srl %o4, 16, %o5
+ sth %o5, [%o0]
+ inc 2, %o0
+ dec 2, %o2
+ andn %o2, 3, %o3 /* %o3 is aligned word count */
+ dec 4, %o3 /* avoid reading beyond tail of src */
+ sub %o1, %o0, %o1 /* %o1 gets the difference */
+
+3: sll %o4, 16, %g5 /* save residual bytes */
+ lduw [%o1+%o0], %o4
+ deccc 4, %o3
+ srl %o4, 16, %o5 /* merge with residual */
+ or %o5, %g5, %g5
+ st %g5, [%o0]
+ bnz,pt %XCC, 3b
+ inc 4, %o0
+ sub %o1, 2, %o1 /* used two bytes of last word read */
+ and %o2, 3, %o2
+ b 7f
+ inc 4, %o2
+
+.Lw4cp: andn %o2, 3, %o3 /* %o3 is aligned word count */
+ sub %o1, %o0, %o1 /* %o1 gets the difference */
+
+1: lduw [%o1+%o0], %o4 /* read from address */
+ deccc 4, %o3 /* decrement count */
+ st %o4, [%o0] /* write at destination address */
+ bgu,pt %XCC, 1b
+ inc 4, %o0 /* increment to address */
+ and %o2, 3, %o2 /* number of leftover bytes, if any */
+
+ /* simple finish up byte copy, works with any alignment */
+7:
+ add %o1, %o0, %o1 /* restore %o1 */
+.Lsmallrest:
+ tst %o2
+ bz,pt %XCC, .Lsmallx
+ cmp %o2, 4
+ blt,pn %XCC, .Lsmallleft3
+ nop
+ sub %o2, 3, %o2
+.Lsmallnotalign4:
+ ldub [%o1], %o3 /* read byte */
+ subcc %o2, 4, %o2 /* reduce count by 4 */
+ stb %o3, [%o0] /* write byte */
+ ldub [%o1+1], %o3 /* repeat for total of 4 bytes */
+ add %o1, 4, %o1 /* advance SRC by 4 */
+ stb %o3, [%o0+1]
+ ldub [%o1-2], %o3
+ add %o0, 4, %o0 /* advance DST by 4 */
+ stb %o3, [%o0-2]
+ ldub [%o1-1], %o3
+ bgu,pt %XCC, .Lsmallnotalign4 /* loop til 3 or fewer bytes remain */
+ stb %o3, [%o0-1]
+ addcc %o2, 3, %o2 /* restore count */
+ bz,pt %XCC, .Lsmallx
+.Lsmallleft3: /* 1, 2, or 3 bytes remain */
+ subcc %o2, 1, %o2
+ ldub [%o1], %o3 /* load one byte */
+ bz,pt %XCC, .Lsmallx
+ stb %o3, [%o0] /* store one byte */
+ ldub [%o1+1], %o3 /* load second byte */
+ subcc %o2, 1, %o2
+ bz,pt %XCC, .Lsmallx
+ stb %o3, [%o0+1] /* store second byte */
+ ldub [%o1+2], %o3 /* load third byte */
+ stb %o3, [%o0+2] /* store third byte */
+.Lsmallx:
+ retl
+ mov EX_RETVAL(%g1), %o0 /* restore %o0 */
+
+.Lsmallfin:
+ tst %o2
+ bnz,pn %XCC, .Lsmallleft3
+ nop
+ retl
+ mov EX_RETVAL(%g1), %o0 /* restore %o0 */
+
+ .align 16
+.Lsmallwords:
+ lduw [%o1], %o3 /* read word */
+ subcc %o2, 8, %o2 /* update count */
+ stw %o3, [%o0] /* write word */
+ add %o1, 8, %o1 /* update SRC */
+ lduw [%o1-4], %o3 /* read word */
+ add %o0, 8, %o0 /* update DST */
+ bgu,pt %XCC, .Lsmallwords /* loop until done */
+ stw %o3, [%o0-4] /* write word */
+ addcc %o2, 7, %o2 /* restore count */
+ bz,pt %XCC, .Lsmallexit /* check for completion */
+ cmp %o2, 4 /* check for 4 or more bytes left */
+ blt,pt %XCC, .Lsmallleft3 /* if not, go to finish up */
+ nop
+ lduw [%o1], %o3
+ add %o1, 4, %o1
+ subcc %o2, 4, %o2
+ add %o0, 4, %o0
+ bnz,pn %XCC, .Lsmallleft3
+ stw %o3, [%o0-4]
+ retl
+ mov EX_RETVAL(%g1), %o0 /* restore %o0 */
+
+ .align 16
+.Lmedium:
+.Lmedium_join:
+ neg %o0, %o5
+ andcc %o5, 7, %o5 /* bytes till DST 8 byte aligned */
+ brz,pt %o5, .Ldst_aligned_on_8
+
+ /* %o5 has the bytes to be written in partial store. */
+ sub %o2, %o5, %o2
+ sub %o1, %o0, %o1 /* %o1 gets the difference */
+7: /* dst aligning loop */
+ ldub [%o1+%o0], %o4 /* load one byte */
+ subcc %o5, 1, %o5
+ stb %o4, [%o0]
+ bgu,pt %XCC, 7b
+ add %o0, 1, %o0 /* advance dst */
+ add %o1, %o0, %o1 /* restore %o1 */
+.Ldst_aligned_on_8:
+ andcc %o1, 7, %o5
+ brnz,pt %o5, .Lsrc_dst_unaligned_on_8
+ nop
+
+.Lsrc_dst_aligned_on_8:
+ /* check if we are copying MED_MAX or more bytes */
+ cmp %o2, MED_MAX /* limit to store buffer size */
+ bgu,pn %XCC, .Llarge_align8_copy
+ nop
+/*
+ * Special case for handling when src and dest are both long word aligned
+ * and total data to move is less than MED_MAX bytes
+ */
+.Lmedlong:
+ subcc %o2, 63, %o2 /* adjust length to allow cc test */
+ ble,pn %XCC, .Lmedl63 /* skip big loop if < 64 bytes */
+ nop
+.Lmedl64:
+ ldx [%o1], %o4 /* load */
+ subcc %o2, 64, %o2 /* decrement length count */
+ stx %o4, [%o0] /* and store */
+ ldx [%o1+8], %o3 /* a block of 64 bytes */
+ stx %o3, [%o0+8]
+ ldx [%o1+16], %o4
+ stx %o4, [%o0+16]
+ ldx [%o1+24], %o3
+ stx %o3, [%o0+24]
+ ldx [%o1+32], %o4 /* load */
+ stx %o4, [%o0+32] /* and store */
+ ldx [%o1+40], %o3 /* a block of 64 bytes */
+ add %o1, 64, %o1 /* increase src ptr by 64 */
+ stx %o3, [%o0+40]
+ ldx [%o1-16], %o4
+ add %o0, 64, %o0 /* increase dst ptr by 64 */
+ stx %o4, [%o0-16]
+ ldx [%o1-8], %o3
+ bgu,pt %XCC, .Lmedl64 /* repeat if at least 64 bytes left */
+ stx %o3, [%o0-8]
+.Lmedl63:
+ addcc %o2, 32, %o2 /* adjust remaining count */
+ ble,pt %XCC, .Lmedl31 /* to skip if 31 or fewer bytes left */
+ nop
+ ldx [%o1], %o4 /* load */
+ sub %o2, 32, %o2 /* decrement length count */
+ stx %o4, [%o0] /* and store */
+ ldx [%o1+8], %o3 /* a block of 32 bytes */
+ add %o1, 32, %o1 /* increase src ptr by 32 */
+ stx %o3, [%o0+8]
+ ldx [%o1-16], %o4
+ add %o0, 32, %o0 /* increase dst ptr by 32 */
+ stx %o4, [%o0-16]
+ ldx [%o1-8], %o3
+ stx %o3, [%o0-8]
+.Lmedl31:
+ addcc %o2, 16, %o2 /* adjust remaining count */
+ ble,pt %XCC, .Lmedl15 /* skip if 15 or fewer bytes left */
+ nop
+ ldx [%o1], %o4 /* load and store 16 bytes */
+ add %o1, 16, %o1 /* increase src ptr by 16 */
+ stx %o4, [%o0]
+ sub %o2, 16, %o2 /* decrease count by 16 */
+ ldx [%o1-8], %o3
+ add %o0, 16, %o0 /* increase dst ptr by 16 */
+ stx %o3, [%o0-8]
+.Lmedl15:
+ addcc %o2, 15, %o2 /* restore count */
+ bz,pt %XCC, .Lsmallexit /* exit if finished */
+ cmp %o2, 8
+ blt,pt %XCC, .Lmedw7 /* skip if 7 or fewer bytes left */
+ tst %o2
+ ldx [%o1], %o4 /* load 8 bytes */
+ add %o1, 8, %o1 /* increase src ptr by 8 */
+ add %o0, 8, %o0 /* increase dst ptr by 8 */
+ subcc %o2, 8, %o2 /* decrease count by 8 */
+ bnz,pn %XCC, .Lmedw7
+ stx %o4, [%o0-8] /* and store 8 bytes */
+ retl
+ mov EX_RETVAL(%g1), %o0 /* restore %o0 */
+
+ .align 16
+.Lsrc_dst_unaligned_on_8:
+ /* DST is 8-byte aligned, src is not */
+ andcc %o1, 0x3, %o5 /* test word alignment */
+ bnz,pt %XCC, .Lunalignsetup /* branch if not word aligned */
+ nop
+
+/*
+ * Handle all cases where src and dest are aligned on word
+ * boundaries. Use unrolled loops for better performance.
+ * This option wins over standard large data move when
+ * source and destination is in cache for medium
+ * to short data moves.
+ */
+ cmp %o2, MED_WMAX /* limit to store buffer size */
+ bge,pt %XCC, .Lunalignrejoin /* otherwise rejoin main loop */
+ nop
+
+ subcc %o2, 31, %o2 /* adjust length to allow cc test */
+ /* for end of loop */
+ ble,pt %XCC, .Lmedw31 /* skip big loop if less than 16 */
+.Lmedw32:
+ ld [%o1], %o4 /* move a block of 32 bytes */
+ sllx %o4, 32, %o5
+ ld [%o1+4], %o4
+ or %o4, %o5, %o5
+ stx %o5, [%o0]
+ subcc %o2, 32, %o2 /* decrement length count */
+ ld [%o1+8], %o4
+ sllx %o4, 32, %o5
+ ld [%o1+12], %o4
+ or %o4, %o5, %o5
+ stx %o5, [%o0+8]
+ add %o1, 32, %o1 /* increase src ptr by 32 */
+ ld [%o1-16], %o4
+ sllx %o4, 32, %o5
+ ld [%o1-12], %o4
+ or %o4, %o5, %o5
+ stx %o5, [%o0+16]
+ add %o0, 32, %o0 /* increase dst ptr by 32 */
+ ld [%o1-8], %o4
+ sllx %o4, 32, %o5
+ ld [%o1-4], %o4
+ or %o4, %o5, %o5
+ bgu,pt %XCC, .Lmedw32 /* repeat if at least 32 bytes left */
+ stx %o5, [%o0-8]
+.Lmedw31:
+ addcc %o2, 31, %o2 /* restore count */
+ bz,pt %XCC, .Lsmallexit /* exit if finished */
+ cmp %o2, 16
+ blt,pt %XCC, .Lmedw15
+ nop
+ ld [%o1], %o4 /* move a block of 16 bytes */
+ sllx %o4, 32, %o5
+ subcc %o2, 16, %o2 /* decrement length count */
+ ld [%o1+4], %o4
+ or %o4, %o5, %o5
+ stx %o5, [%o0]
+ add %o1, 16, %o1 /* increase src ptr by 16 */
+ ld [%o1-8], %o4
+ add %o0, 16, %o0 /* increase dst ptr by 16 */
+ sllx %o4, 32, %o5
+ ld [%o1-4], %o4
+ or %o4, %o5, %o5
+ stx %o5, [%o0-8]
+.Lmedw15:
+ bz,pt %XCC, .Lsmallexit /* exit if finished */
+ cmp %o2, 8
+ blt,pn %XCC, .Lmedw7 /* skip if 7 or fewer bytes left */
+ tst %o2
+ ld [%o1], %o4 /* load 4 bytes */
+ subcc %o2, 8, %o2 /* decrease count by 8 */
+ stw %o4, [%o0] /* and store 4 bytes */
+ add %o1, 8, %o1 /* increase src ptr by 8 */
+ ld [%o1-4], %o3 /* load 4 bytes */
+ add %o0, 8, %o0 /* increase dst ptr by 8 */
+ stw %o3, [%o0-4] /* and store 4 bytes */
+ bz,pt %XCC, .Lsmallexit /* exit if finished */
+.Lmedw7: /* count is ge 1, less than 8 */
+ cmp %o2, 4 /* check for 4 bytes left */
+ blt,pn %XCC, .Lsmallleft3 /* skip if 3 or fewer bytes left */
+ nop
+ ld [%o1], %o4 /* load 4 bytes */
+ add %o1, 4, %o1 /* increase src ptr by 4 */
+ add %o0, 4, %o0 /* increase dst ptr by 4 */
+ subcc %o2, 4, %o2 /* decrease count by 4 */
+ bnz,pt %XCC, .Lsmallleft3
+ stw %o4, [%o0-4] /* and store 4 bytes */
+ retl
+ mov EX_RETVAL(%g1), %o0 /* restore %o0 */
+
+ .align 16
+.Llarge_align8_copy: /* Src and dst 8 byte aligned */
+ /* align dst to 64 byte boundary */
+ andcc %o0, 0x3f, %o3 /* check for dst 64 byte aligned */
+ brz,pn %o3, .Laligned_to_64
+ andcc %o0, 8, %o3 /* odd long words to move? */
+ brz,pt %o3, .Laligned_to_16
+ nop
+ ldx [%o1], %o4
+ sub %o2, 8, %o2
+ add %o1, 8, %o1 /* increment src ptr */
+ add %o0, 8, %o0 /* increment dst ptr */
+ stx %o4, [%o0-8]
+.Laligned_to_16:
+ andcc %o0, 16, %o3 /* pair of long words to move? */
+ brz,pt %o3, .Laligned_to_32
+ nop
+ ldx [%o1], %o4
+ sub %o2, 16, %o2
+ stx %o4, [%o0]
+ add %o1, 16, %o1 /* increment src ptr */
+ ldx [%o1-8], %o4
+ add %o0, 16, %o0 /* increment dst ptr */
+ stx %o4, [%o0-8]
+.Laligned_to_32:
+ andcc %o0, 32, %o3 /* four long words to move? */
+ brz,pt %o3, .Laligned_to_64
+ nop
+ ldx [%o1], %o4
+ sub %o2, 32, %o2
+ stx %o4, [%o0]
+ ldx [%o1+8], %o4
+ stx %o4, [%o0+8]
+ ldx [%o1+16], %o4
+ stx %o4, [%o0+16]
+ add %o1, 32, %o1 /* increment src ptr */
+ ldx [%o1-8], %o4
+ add %o0, 32, %o0 /* increment dst ptr */
+ stx %o4, [%o0-8]
+.Laligned_to_64:
+/* Following test is included to avoid issues where existing executables
+ * incorrectly call memcpy with overlapping src and dest instead of memmove
+ *
+ * if ( (src ge dst) and (dst+len > src)) go to overlap case
+ * if ( (src lt dst) and (src+len > dst)) go to overlap case
+ */
+ cmp %o1,%o0
+ bge,pt %XCC, 1f
+ nop
+/* src+len > dst? */
+ add %o1, %o2, %o4
+ cmp %o4, %o0
+ bgt,pt %XCC, .Lmv_aligned_on_64
+ nop
+ ba 2f
+ nop
+1:
+/* dst+len > src? */
+ add %o0, %o2, %o4
+ cmp %o4, %o1
+ bgt,pt %XCC, .Lmv_aligned_on_64
+ nop
+2:
+/* handle non-overlapped copies
+ *
+ * Using block init store (BIS) instructions to avoid fetching cache
+ * lines from memory. Use ST_CHUNK stores to first element of each cache
+ * line (similar to prefetching) to avoid overfilling STQ or miss buffers.
+ * Gives existing cache lines time to be moved out of L1/L2/L3 cache.
+ */
+ andn %o2, 0x3f, %o5 /* %o5 is multiple of block size */
+ and %o2, 0x3f, %o2 /* residue bytes in %o2 */
+
+/* We use ASI_STBIMRU_P for the first store to each cache line
+ * followed by ASI_STBI_P (mark as LRU) for the last store. That
+ * mixed approach reduces the chances the cache line is removed
+ * before we finish setting it, while minimizing the effects on
+ * other cached values during a large memcpy
+ *
+ * Intermediate stores can be normal since first BIS activates the
+ * cache line in the L2 cache.
+ *
+ * ST_CHUNK batches up initial BIS operations for several cache lines
+ * to allow multiple requests to not be blocked by overflowing the
+ * the store miss buffer. Then the matching stores for all those
+ * BIS operations are executed.
+ */
+
+.Lalign_loop:
+ cmp %o5, ST_CHUNK*64
+ blu,pt %XCC, .Lalign_short
+ mov ST_CHUNK, %o3
+ sllx %o3, 6, %g5 /* ST_CHUNK*64 */
+
+.Lalign_loop_start:
+ prefetch [%o1 + (ALIGN_PRE * BLOCK_SIZE)], 21
+ subcc %o3, 2, %o3
+ ldx [%o1], %o4
+ add %o1, 128, %o1
+ EX_ST(STORE_ASI(%o4, %o0))
+ add %o0, 64, %o0
+ ldx [%o1-64], %o4
+ EX_ST(STORE_ASI(%o4, %o0))
+ add %o0, 64, %o0
+ bgu,pt %XCC, .Lalign_loop_start
+ prefetch [%o1 + ((ALIGN_PRE-1) * BLOCK_SIZE)], 21
+
+ mov ST_CHUNK, %o3
+ sub %o1, %g5, %o1 /* reset %o1 */
+ sub %o0, %g5, %o0 /* reset %o0 */
+
+ sub %o0, 8, %o0 /* adjust %o0 for ASI alignment */
+.Lalign_loop_rest:
+ ldx [%o1+8],%o4
+ add %o0, 64, %o0
+ stx %o4, [%o0-48]
+ subcc %o3, 1, %o3
+ ldx [%o1+16],%o4
+ stx %o4, [%o0-40]
+ sub %o5, 64, %o5
+ ldx [%o1+24],%o4
+ stx %o4, [%o0-32]
+ ldx [%o1+32],%o4
+ stx %o4, [%o0-24]
+ ldx [%o1+40],%o4
+ stx %o4, [%o0-16]
+ ldx [%o1+48],%o4
+ stx %o4, [%o0-8]
+ add %o1, 64, %o1
+ ldx [%o1-8],%o4
+ bgu,pt %XCC, .Lalign_loop_rest
+ EX_ST(STORE_INIT(%o4,%o0)) /* mark cache line as LRU */
+
+ mov ST_CHUNK, %o3
+ cmp %o5, ST_CHUNK*64
+ bgu,pt %XCC, .Lalign_loop_start
+ add %o0, 8, %o0 /* restore %o0 from ASI alignment */
+
+ cmp %o5, 0
+ beq,pt %XCC, .Lalign_done
+
+/* no prefetches needed in these loops
+ * since we are within ALIGN_PRE of the end */
+.Lalign_short:
+ srl %o5, 6, %o3
+.Lalign_loop_short:
+ subcc %o3, 1, %o3
+ ldx [%o1], %o4
+ add %o1, 64, %o1
+ EX_ST(STORE_ASI(%o4, %o0))
+ bgu,pt %XCC, .Lalign_loop_short
+ add %o0, 64, %o0
+
+ sub %o1, %o5, %o1 /* reset %o1 */
+ sub %o0, %o5, %o0 /* reset %o0 */
+
+ sub %o0, 8, %o0 /* adjust %o0 for ASI alignment */
+.Lalign_short_rest:
+ ldx [%o1+8],%o4
+ add %o0, 64, %o0
+ stx %o4, [%o0-48]
+ ldx [%o1+16],%o4
+ subcc %o5, 64, %o5
+ stx %o4, [%o0-40]
+ ldx [%o1+24],%o4
+ stx %o4, [%o0-32]
+ ldx [%o1+32],%o4
+ stx %o4, [%o0-24]
+ ldx [%o1+40],%o4
+ stx %o4, [%o0-16]
+ ldx [%o1+48],%o4
+ stx %o4, [%o0-8]
+ add %o1, 64, %o1
+ ldx [%o1-8],%o4
+ bgu,pt %XCC, .Lalign_short_rest
+ EX_ST(STORE_INIT(%o4,%o0)) /* mark cache line as LRU */
+
+ add %o0, 8, %o0 /* restore %o0 from ASI alignment */
+
+.Lalign_done:
+ cmp %o2, 0
+ membar #StoreStore
+ bne,pt %XCC, .Lmedl63
+ subcc %o2, 63, %o2 /* adjust length to allow cc test */
+ retl
+ mov EX_RETVAL(%g1), %o0 /* restore %o0 */
+
+ .align 16
+ /* Dst is on 8 byte boundary; src is not; remaining cnt > SMALL_MAX */
+ /* Since block load/store and BIS are not in use for unaligned data,
+ * no need to align dst on 64 byte cache line boundary */
+.Lunalignsetup:
+.Lunalignrejoin:
+ rd %fprs, %g5 /* check for unused fp */
+ /* if fprs.fef == 0, set it.
+ * Setting it when already set costs more than checking */
+ andcc %g5, FPRS_FEF, %g5 /* test FEF, fprs.du = fprs.dl = 0 */
+ bz,a %XCC, 1f
+ wr %g0, FPRS_FEF, %fprs /* fprs.fef = 1 */
+1:
+ andn %o2, 0x3f, %o5 /* %o5 is multiple of block size */
+ and %o2, 0x3f, %o2 /* residue bytes in %o2 */
+ cmp %o2, 8 /* Insure we do not load beyond */
+ bgt,pt %XCC, .Lunalign_adjust /* end of source buffer */
+ andn %o1, 0x7, %o4 /* %o4 has 8 byte aligned src addr */
+ add %o2, 64, %o2 /* adjust to leave loop */
+ sub %o5, 64, %o5 /* early if necessary */
+.Lunalign_adjust:
+ alignaddr %o1, %g0, %g0 /* generate %gsr */
+ add %o1, %o5, %o1 /* advance %o1 to after blocks */
+ ldd [%o4], %f0
+.Lunalign_loop:
+ prefetch [%o0 + (9 * BLOCK_SIZE)], 20
+ ldd [%o4+8], %f2
+ faligndata %f0, %f2, %f16
+ ldd [%o4+16], %f4
+ subcc %o5, BLOCK_SIZE, %o5
+ std %f16, [%o0]
+ faligndata %f2, %f4, %f18
+ ldd [%o4+24], %f6
+ std %f18, [%o0+8]
+ faligndata %f4, %f6, %f20
+ ldd [%o4+32], %f8
+ std %f20, [%o0+16]
+ faligndata %f6, %f8, %f22
+ ldd [%o4+40], %f10
+ std %f22, [%o0+24]
+ faligndata %f8, %f10, %f24
+ ldd [%o4+48], %f12
+ std %f24, [%o0+32]
+ faligndata %f10, %f12, %f26
+ ldd [%o4+56], %f14
+ add %o4, BLOCK_SIZE, %o4
+ std %f26, [%o0+40]
+ faligndata %f12, %f14, %f28
+ ldd [%o4], %f0
+ std %f28, [%o0+48]
+ faligndata %f14, %f0, %f30
+ std %f30, [%o0+56]
+ add %o0, BLOCK_SIZE, %o0
+ bgu,pt %XCC, .Lunalign_loop
+ prefetch [%o4 + (11 * BLOCK_SIZE)], 20
+
+ /* Handle trailing bytes, 64 to 127
+ * Dest long word aligned, Src not long word aligned */
+ cmp %o2, 15
+ bleu,pt %XCC, .Lunalign_short
+
+ andn %o2, 0x7, %o5 /* %o5 is multiple of 8 */
+ and %o2, 0x7, %o2 /* residue bytes in %o2 */
+ add %o2, 8, %o2
+ sub %o5, 8, %o5 /* do not load past end of src */
+ andn %o1, 0x7, %o4 /* %o4 has 8 byte aligned src addr */
+ add %o1, %o5, %o1 /* move %o1 to after multiple of 8 */
+ ldd [%o4], %f0 /* fetch partial word */
+.Lunalign_by8:
+ ldd [%o4+8], %f2
+ add %o4, 8, %o4
+ faligndata %f0, %f2, %f16
+ subcc %o5, 8, %o5
+ std %f16, [%o0]
+ fsrc2 %f2, %f0
+ bgu,pt %XCC, .Lunalign_by8
+ add %o0, 8, %o0
+
+.Lunalign_short: /* restore fprs state */
+ brnz,pt %g5, .Lsmallrest
+ nop
+ ba .Lsmallrest
+ wr %g5, %g0, %fprs
+END(__memcpy_niagara7)
+
+#endif
new file mode 100644
@@ -0,0 +1,4 @@
+#define memmove __memmove_ultra1
+#undef libc_hidden_builtin_def
+#define libc_hidden_builtin_def(name)
+#include <sysdeps/sparc/sparc64/memmove.S>
new file mode 100644
@@ -0,0 +1,33 @@
+/* Multiple versions of memmove.
+ All versions must be listed in ifunc-impl-list.c.
+ Copyright (C) 2017 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <http://www.gnu.org/licenses/>. */
+
+#if IS_IN (libc)
+# define memmove __redirect_memmove
+# include <string.h>
+# undef memmove
+
+# include <sparc-ifunc.h>
+
+# define SYMBOL_NAME memmove
+# include "ifunc-memmove.h"
+
+sparc_libc_ifunc_redirected (__redirect_memmove, memmove, IFUNC_SELECTOR);
+
+sparc_ifunc_redirected_hidden_def (__redirect_memmove, memmove)
+#endif
new file mode 100644
@@ -0,0 +1 @@
+#include <sysdeps/sparc/sparc64/rtld-memmove.c>