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authorZack Weinberg <zackw@panix.com>2017-06-08 15:39:03 -0400
committerZack Weinberg <zackw@panix.com>2017-06-08 15:39:03 -0400
commit5046dbb4a7eba5eccfd258f92f4735c9ffc8d069 (patch)
tree4470480d904b65cf14ca524f96f79eca818c3eaf /REORG.TODO/sysdeps/powerpc/powerpc64/power4
parent199fc19d3aaaf57944ef036e15904febe877fc93 (diff)
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Prepare for radical source tree reorganization.zack/build-layout-experiment
All top-level files and directories are moved into a temporary storage directory, REORG.TODO, except for files that will certainly still exist in their current form at top level when we're done (COPYING, COPYING.LIB, LICENSES, NEWS, README), all old ChangeLog files (which are moved to the new directory OldChangeLogs, instead), and the generated file INSTALL (which is just deleted; in the new order, there will be no generated files checked into version control).
Diffstat (limited to 'REORG.TODO/sysdeps/powerpc/powerpc64/power4')
-rw-r--r--REORG.TODO/sysdeps/powerpc/powerpc64/power4/Implies2
-rw-r--r--REORG.TODO/sysdeps/powerpc/powerpc64/power4/Makefile6
-rw-r--r--REORG.TODO/sysdeps/powerpc/powerpc64/power4/fpu/Implies1
-rw-r--r--REORG.TODO/sysdeps/powerpc/powerpc64/power4/fpu/multiarch/Implies1
-rw-r--r--REORG.TODO/sysdeps/powerpc/powerpc64/power4/memcmp.S1369
-rw-r--r--REORG.TODO/sysdeps/powerpc/powerpc64/power4/memcopy.h1
-rw-r--r--REORG.TODO/sysdeps/powerpc/powerpc64/power4/memcpy.S477
-rw-r--r--REORG.TODO/sysdeps/powerpc/powerpc64/power4/memset.S251
-rw-r--r--REORG.TODO/sysdeps/powerpc/powerpc64/power4/multiarch/Implies1
-rw-r--r--REORG.TODO/sysdeps/powerpc/powerpc64/power4/strncmp.S225
10 files changed, 2334 insertions, 0 deletions
diff --git a/REORG.TODO/sysdeps/powerpc/powerpc64/power4/Implies b/REORG.TODO/sysdeps/powerpc/powerpc64/power4/Implies
new file mode 100644
index 0000000000..a372141bb7
--- /dev/null
+++ b/REORG.TODO/sysdeps/powerpc/powerpc64/power4/Implies
@@ -0,0 +1,2 @@
+powerpc/power4/fpu
+powerpc/power4
diff --git a/REORG.TODO/sysdeps/powerpc/powerpc64/power4/Makefile b/REORG.TODO/sysdeps/powerpc/powerpc64/power4/Makefile
new file mode 100644
index 0000000000..ba06adb5d0
--- /dev/null
+++ b/REORG.TODO/sysdeps/powerpc/powerpc64/power4/Makefile
@@ -0,0 +1,6 @@
+# Makefile fragment for POWER4/5/5+.
+
+ifeq ($(subdir),string)
+CFLAGS-wordcopy.c += --param max-variable-expansions-in-unroller=2 --param max-unroll-times=2 -funroll-loops -fpeel-loops
+CFLAGS-memmove.c += --param max-variable-expansions-in-unroller=2 --param max-unroll-times=2 -funroll-loops -fpeel-loops
+endif
diff --git a/REORG.TODO/sysdeps/powerpc/powerpc64/power4/fpu/Implies b/REORG.TODO/sysdeps/powerpc/powerpc64/power4/fpu/Implies
new file mode 100644
index 0000000000..c1f617b7da
--- /dev/null
+++ b/REORG.TODO/sysdeps/powerpc/powerpc64/power4/fpu/Implies
@@ -0,0 +1 @@
+powerpc/powerpc64/fpu
diff --git a/REORG.TODO/sysdeps/powerpc/powerpc64/power4/fpu/multiarch/Implies b/REORG.TODO/sysdeps/powerpc/powerpc64/power4/fpu/multiarch/Implies
new file mode 100644
index 0000000000..8d6531a174
--- /dev/null
+++ b/REORG.TODO/sysdeps/powerpc/powerpc64/power4/fpu/multiarch/Implies
@@ -0,0 +1 @@
+powerpc/powerpc64/fpu/multiarch
diff --git a/REORG.TODO/sysdeps/powerpc/powerpc64/power4/memcmp.S b/REORG.TODO/sysdeps/powerpc/powerpc64/power4/memcmp.S
new file mode 100644
index 0000000000..6ca98e909c
--- /dev/null
+++ b/REORG.TODO/sysdeps/powerpc/powerpc64/power4/memcmp.S
@@ -0,0 +1,1369 @@
+/* Optimized memcmp implementation for PowerPC64.
+ Copyright (C) 2003-2017 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>
+
+/* int [r3] memcmp (const char *s1 [r3],
+ const char *s2 [r4],
+ size_t size [r5]) */
+
+#ifndef MEMCMP
+# define MEMCMP memcmp
+#endif
+
+ .machine power4
+EALIGN (MEMCMP, 4, 0)
+ CALL_MCOUNT 3
+
+#define rRTN r3
+#define rSTR1 r3 /* first string arg */
+#define rSTR2 r4 /* second string arg */
+#define rN r5 /* max string length */
+#define rWORD1 r6 /* current word in s1 */
+#define rWORD2 r7 /* current word in s2 */
+#define rWORD3 r8 /* next word in s1 */
+#define rWORD4 r9 /* next word in s2 */
+#define rWORD5 r10 /* next word in s1 */
+#define rWORD6 r11 /* next word in s2 */
+#define rWORD7 r30 /* next word in s1 */
+#define rWORD8 r31 /* next word in s2 */
+
+ xor r0, rSTR2, rSTR1
+ cmpldi cr6, rN, 0
+ cmpldi cr1, rN, 12
+ clrldi. r0, r0, 61
+ clrldi r12, rSTR1, 61
+ cmpldi cr5, r12, 0
+ beq- cr6, L(zeroLength)
+ dcbt 0, rSTR1
+ dcbt 0, rSTR2
+/* If less than 8 bytes or not aligned, use the unaligned
+ byte loop. */
+ blt cr1, L(bytealigned)
+ std rWORD8, -8(r1)
+ std rWORD7, -16(r1)
+ cfi_offset(rWORD8, -8)
+ cfi_offset(rWORD7, -16)
+ bne L(unaligned)
+/* At this point we know both strings have the same alignment and the
+ compare length is at least 8 bytes. r12 contains the low order
+ 3 bits of rSTR1 and cr5 contains the result of the logical compare
+ of r12 to 0. If r12 == 0 then we are already double word
+ aligned and can perform the DW aligned loop.
+
+ Otherwise we know the two strings have the same alignment (but not
+ yet DW). So we force the string addresses to the next lower DW
+ boundary and special case this first DW using shift left to
+ eliminate bits preceding the first byte. Since we want to join the
+ normal (DW aligned) compare loop, starting at the second double word,
+ we need to adjust the length (rN) and special case the loop
+ versioning for the first DW. This ensures that the loop count is
+ correct and the first DW (shifted) is in the expected register pair. */
+ .align 4
+L(samealignment):
+ clrrdi rSTR1, rSTR1, 3
+ clrrdi rSTR2, rSTR2, 3
+ beq cr5, L(DWaligned)
+ add rN, rN, r12
+ sldi rWORD6, r12, 3
+ srdi r0, rN, 5 /* Divide by 32 */
+ andi. r12, rN, 24 /* Get the DW remainder */
+#ifdef __LITTLE_ENDIAN__
+ ldbrx rWORD1, 0, rSTR1
+ ldbrx rWORD2, 0, rSTR2
+ addi rSTR1, rSTR1, 8
+ addi rSTR2, rSTR2, 8
+#else
+ ld rWORD1, 0(rSTR1)
+ ld rWORD2, 0(rSTR2)
+#endif
+ cmpldi cr1, r12, 16
+ cmpldi cr7, rN, 32
+ clrldi rN, rN, 61
+ beq L(dPs4)
+ mtctr r0 /* Power4 wants mtctr 1st in dispatch group */
+ bgt cr1, L(dPs3)
+ beq cr1, L(dPs2)
+
+/* Remainder is 8 */
+ .align 3
+L(dsP1):
+ sld rWORD5, rWORD1, rWORD6
+ sld rWORD6, rWORD2, rWORD6
+ cmpld cr5, rWORD5, rWORD6
+ blt cr7, L(dP1x)
+/* Do something useful in this cycle since we have to branch anyway. */
+#ifdef __LITTLE_ENDIAN__
+ ldbrx rWORD1, 0, rSTR1
+ ldbrx rWORD2, 0, rSTR2
+ addi rSTR1, rSTR1, 8
+ addi rSTR2, rSTR2, 8
+#else
+ ld rWORD1, 8(rSTR1)
+ ld rWORD2, 8(rSTR2)
+#endif
+ cmpld cr7, rWORD1, rWORD2
+ b L(dP1e)
+/* Remainder is 16 */
+ .align 4
+L(dPs2):
+ sld rWORD5, rWORD1, rWORD6
+ sld rWORD6, rWORD2, rWORD6
+ cmpld cr6, rWORD5, rWORD6
+ blt cr7, L(dP2x)
+/* Do something useful in this cycle since we have to branch anyway. */
+#ifdef __LITTLE_ENDIAN__
+ ldbrx rWORD7, 0, rSTR1
+ ldbrx rWORD8, 0, rSTR2
+ addi rSTR1, rSTR1, 8
+ addi rSTR2, rSTR2, 8
+#else
+ ld rWORD7, 8(rSTR1)
+ ld rWORD8, 8(rSTR2)
+#endif
+ cmpld cr5, rWORD7, rWORD8
+ b L(dP2e)
+/* Remainder is 24 */
+ .align 4
+L(dPs3):
+ sld rWORD3, rWORD1, rWORD6
+ sld rWORD4, rWORD2, rWORD6
+ cmpld cr1, rWORD3, rWORD4
+ b L(dP3e)
+/* Count is a multiple of 32, remainder is 0 */
+ .align 4
+L(dPs4):
+ mtctr r0 /* Power4 wants mtctr 1st in dispatch group */
+ sld rWORD1, rWORD1, rWORD6
+ sld rWORD2, rWORD2, rWORD6
+ cmpld cr7, rWORD1, rWORD2
+ b L(dP4e)
+
+/* At this point we know both strings are double word aligned and the
+ compare length is at least 8 bytes. */
+ .align 4
+L(DWaligned):
+ andi. r12, rN, 24 /* Get the DW remainder */
+ srdi r0, rN, 5 /* Divide by 32 */
+ cmpldi cr1, r12, 16
+ cmpldi cr7, rN, 32
+ clrldi rN, rN, 61
+ beq L(dP4)
+ bgt cr1, L(dP3)
+ beq cr1, L(dP2)
+
+/* Remainder is 8 */
+ .align 4
+L(dP1):
+ mtctr r0 /* Power4 wants mtctr 1st in dispatch group */
+/* Normally we'd use rWORD7/rWORD8 here, but since we might exit early
+ (8-15 byte compare), we want to use only volatile registers. This
+ means we can avoid restoring non-volatile registers since we did not
+ change any on the early exit path. The key here is the non-early
+ exit path only cares about the condition code (cr5), not about which
+ register pair was used. */
+#ifdef __LITTLE_ENDIAN__
+ ldbrx rWORD5, 0, rSTR1
+ ldbrx rWORD6, 0, rSTR2
+ addi rSTR1, rSTR1, 8
+ addi rSTR2, rSTR2, 8
+#else
+ ld rWORD5, 0(rSTR1)
+ ld rWORD6, 0(rSTR2)
+#endif
+ cmpld cr5, rWORD5, rWORD6
+ blt cr7, L(dP1x)
+#ifdef __LITTLE_ENDIAN__
+ ldbrx rWORD1, 0, rSTR1
+ ldbrx rWORD2, 0, rSTR2
+ addi rSTR1, rSTR1, 8
+ addi rSTR2, rSTR2, 8
+#else
+ ld rWORD1, 8(rSTR1)
+ ld rWORD2, 8(rSTR2)
+#endif
+ cmpld cr7, rWORD1, rWORD2
+L(dP1e):
+#ifdef __LITTLE_ENDIAN__
+ ldbrx rWORD3, 0, rSTR1
+ ldbrx rWORD4, 0, rSTR2
+ addi rSTR1, rSTR1, 8
+ addi rSTR2, rSTR2, 8
+#else
+ ld rWORD3, 16(rSTR1)
+ ld rWORD4, 16(rSTR2)
+#endif
+ cmpld cr1, rWORD3, rWORD4
+#ifdef __LITTLE_ENDIAN__
+ ldbrx rWORD5, 0, rSTR1
+ ldbrx rWORD6, 0, rSTR2
+ addi rSTR1, rSTR1, 8
+ addi rSTR2, rSTR2, 8
+#else
+ ld rWORD5, 24(rSTR1)
+ ld rWORD6, 24(rSTR2)
+#endif
+ cmpld cr6, rWORD5, rWORD6
+ bne cr5, L(dLcr5x)
+ bne cr7, L(dLcr7x)
+
+#ifdef __LITTLE_ENDIAN__
+ ldbrx rWORD7, 0, rSTR1
+ ldbrx rWORD8, 0, rSTR2
+ addi rSTR1, rSTR1, 8
+ addi rSTR2, rSTR2, 8
+#else
+ ldu rWORD7, 32(rSTR1)
+ ldu rWORD8, 32(rSTR2)
+#endif
+ bne cr1, L(dLcr1)
+ cmpld cr5, rWORD7, rWORD8
+ bdnz L(dLoop)
+ bne cr6, L(dLcr6)
+ ld rWORD8, -8(r1)
+ ld rWORD7, -16(r1)
+ .align 3
+L(dP1x):
+ sldi. r12, rN, 3
+ bne cr5, L(dLcr5x)
+ subfic rN, r12, 64 /* Shift count is 64 - (rN * 8). */
+ bne L(d00)
+ li rRTN, 0
+ blr
+
+/* Remainder is 16 */
+ .align 4
+L(dP2):
+ mtctr r0 /* Power4 wants mtctr 1st in dispatch group */
+#ifdef __LITTLE_ENDIAN__
+ ldbrx rWORD5, 0, rSTR1
+ ldbrx rWORD6, 0, rSTR2
+ addi rSTR1, rSTR1, 8
+ addi rSTR2, rSTR2, 8
+#else
+ ld rWORD5, 0(rSTR1)
+ ld rWORD6, 0(rSTR2)
+#endif
+ cmpld cr6, rWORD5, rWORD6
+ blt cr7, L(dP2x)
+#ifdef __LITTLE_ENDIAN__
+ ldbrx rWORD7, 0, rSTR1
+ ldbrx rWORD8, 0, rSTR2
+ addi rSTR1, rSTR1, 8
+ addi rSTR2, rSTR2, 8
+#else
+ ld rWORD7, 8(rSTR1)
+ ld rWORD8, 8(rSTR2)
+#endif
+ cmpld cr5, rWORD7, rWORD8
+L(dP2e):
+#ifdef __LITTLE_ENDIAN__
+ ldbrx rWORD1, 0, rSTR1
+ ldbrx rWORD2, 0, rSTR2
+ addi rSTR1, rSTR1, 8
+ addi rSTR2, rSTR2, 8
+#else
+ ld rWORD1, 16(rSTR1)
+ ld rWORD2, 16(rSTR2)
+#endif
+ cmpld cr7, rWORD1, rWORD2
+#ifdef __LITTLE_ENDIAN__
+ ldbrx rWORD3, 0, rSTR1
+ ldbrx rWORD4, 0, rSTR2
+ addi rSTR1, rSTR1, 8
+ addi rSTR2, rSTR2, 8
+#else
+ ld rWORD3, 24(rSTR1)
+ ld rWORD4, 24(rSTR2)
+#endif
+ cmpld cr1, rWORD3, rWORD4
+#ifndef __LITTLE_ENDIAN__
+ addi rSTR1, rSTR1, 8
+ addi rSTR2, rSTR2, 8
+#endif
+ bne cr6, L(dLcr6)
+ bne cr5, L(dLcr5)
+ b L(dLoop2)
+/* Again we are on a early exit path (16-23 byte compare), we want to
+ only use volatile registers and avoid restoring non-volatile
+ registers. */
+ .align 4
+L(dP2x):
+#ifdef __LITTLE_ENDIAN__
+ ldbrx rWORD3, 0, rSTR1
+ ldbrx rWORD4, 0, rSTR2
+ addi rSTR1, rSTR1, 8
+ addi rSTR2, rSTR2, 8
+#else
+ ld rWORD3, 8(rSTR1)
+ ld rWORD4, 8(rSTR2)
+#endif
+ cmpld cr1, rWORD3, rWORD4
+ sldi. r12, rN, 3
+ bne cr6, L(dLcr6x)
+#ifndef __LITTLE_ENDIAN__
+ addi rSTR1, rSTR1, 8
+ addi rSTR2, rSTR2, 8
+#endif
+ bne cr1, L(dLcr1x)
+ subfic rN, r12, 64 /* Shift count is 64 - (rN * 8). */
+ bne L(d00)
+ li rRTN, 0
+ blr
+
+/* Remainder is 24 */
+ .align 4
+L(dP3):
+ mtctr r0 /* Power4 wants mtctr 1st in dispatch group */
+#ifdef __LITTLE_ENDIAN__
+ ldbrx rWORD3, 0, rSTR1
+ ldbrx rWORD4, 0, rSTR2
+ addi rSTR1, rSTR1, 8
+ addi rSTR2, rSTR2, 8
+#else
+ ld rWORD3, 0(rSTR1)
+ ld rWORD4, 0(rSTR2)
+#endif
+ cmpld cr1, rWORD3, rWORD4
+L(dP3e):
+#ifdef __LITTLE_ENDIAN__
+ ldbrx rWORD5, 0, rSTR1
+ ldbrx rWORD6, 0, rSTR2
+ addi rSTR1, rSTR1, 8
+ addi rSTR2, rSTR2, 8
+#else
+ ld rWORD5, 8(rSTR1)
+ ld rWORD6, 8(rSTR2)
+#endif
+ cmpld cr6, rWORD5, rWORD6
+ blt cr7, L(dP3x)
+#ifdef __LITTLE_ENDIAN__
+ ldbrx rWORD7, 0, rSTR1
+ ldbrx rWORD8, 0, rSTR2
+ addi rSTR1, rSTR1, 8
+ addi rSTR2, rSTR2, 8
+#else
+ ld rWORD7, 16(rSTR1)
+ ld rWORD8, 16(rSTR2)
+#endif
+ cmpld cr5, rWORD7, rWORD8
+#ifdef __LITTLE_ENDIAN__
+ ldbrx rWORD1, 0, rSTR1
+ ldbrx rWORD2, 0, rSTR2
+ addi rSTR1, rSTR1, 8
+ addi rSTR2, rSTR2, 8
+#else
+ ld rWORD1, 24(rSTR1)
+ ld rWORD2, 24(rSTR2)
+#endif
+ cmpld cr7, rWORD1, rWORD2
+#ifndef __LITTLE_ENDIAN__
+ addi rSTR1, rSTR1, 16
+ addi rSTR2, rSTR2, 16
+#endif
+ bne cr1, L(dLcr1)
+ bne cr6, L(dLcr6)
+ b L(dLoop1)
+/* Again we are on a early exit path (24-31 byte compare), we want to
+ only use volatile registers and avoid restoring non-volatile
+ registers. */
+ .align 4
+L(dP3x):
+#ifdef __LITTLE_ENDIAN__
+ ldbrx rWORD1, 0, rSTR1
+ ldbrx rWORD2, 0, rSTR2
+ addi rSTR1, rSTR1, 8
+ addi rSTR2, rSTR2, 8
+#else
+ ld rWORD1, 16(rSTR1)
+ ld rWORD2, 16(rSTR2)
+#endif
+ cmpld cr7, rWORD1, rWORD2
+ sldi. r12, rN, 3
+ bne cr1, L(dLcr1x)
+#ifndef __LITTLE_ENDIAN__
+ addi rSTR1, rSTR1, 16
+ addi rSTR2, rSTR2, 16
+#endif
+ bne cr6, L(dLcr6x)
+ subfic rN, r12, 64 /* Shift count is 64 - (rN * 8). */
+ bne cr7, L(dLcr7x)
+ bne L(d00)
+ li rRTN, 0
+ blr
+
+/* Count is a multiple of 32, remainder is 0 */
+ .align 4
+L(dP4):
+ mtctr r0 /* Power4 wants mtctr 1st in dispatch group */
+#ifdef __LITTLE_ENDIAN__
+ ldbrx rWORD1, 0, rSTR1
+ ldbrx rWORD2, 0, rSTR2
+ addi rSTR1, rSTR1, 8
+ addi rSTR2, rSTR2, 8
+#else
+ ld rWORD1, 0(rSTR1)
+ ld rWORD2, 0(rSTR2)
+#endif
+ cmpld cr7, rWORD1, rWORD2
+L(dP4e):
+#ifdef __LITTLE_ENDIAN__
+ ldbrx rWORD3, 0, rSTR1
+ ldbrx rWORD4, 0, rSTR2
+ addi rSTR1, rSTR1, 8
+ addi rSTR2, rSTR2, 8
+#else
+ ld rWORD3, 8(rSTR1)
+ ld rWORD4, 8(rSTR2)
+#endif
+ cmpld cr1, rWORD3, rWORD4
+#ifdef __LITTLE_ENDIAN__
+ ldbrx rWORD5, 0, rSTR1
+ ldbrx rWORD6, 0, rSTR2
+ addi rSTR1, rSTR1, 8
+ addi rSTR2, rSTR2, 8
+#else
+ ld rWORD5, 16(rSTR1)
+ ld rWORD6, 16(rSTR2)
+#endif
+ cmpld cr6, rWORD5, rWORD6
+#ifdef __LITTLE_ENDIAN__
+ ldbrx rWORD7, 0, rSTR1
+ ldbrx rWORD8, 0, rSTR2
+ addi rSTR1, rSTR1, 8
+ addi rSTR2, rSTR2, 8
+#else
+ ldu rWORD7, 24(rSTR1)
+ ldu rWORD8, 24(rSTR2)
+#endif
+ cmpld cr5, rWORD7, rWORD8
+ bne cr7, L(dLcr7)
+ bne cr1, L(dLcr1)
+ bdz- L(d24) /* Adjust CTR as we start with +4 */
+/* This is the primary loop */
+ .align 4
+L(dLoop):
+#ifdef __LITTLE_ENDIAN__
+ ldbrx rWORD1, 0, rSTR1
+ ldbrx rWORD2, 0, rSTR2
+ addi rSTR1, rSTR1, 8
+ addi rSTR2, rSTR2, 8
+#else
+ ld rWORD1, 8(rSTR1)
+ ld rWORD2, 8(rSTR2)
+#endif
+ cmpld cr1, rWORD3, rWORD4
+ bne cr6, L(dLcr6)
+L(dLoop1):
+#ifdef __LITTLE_ENDIAN__
+ ldbrx rWORD3, 0, rSTR1
+ ldbrx rWORD4, 0, rSTR2
+ addi rSTR1, rSTR1, 8
+ addi rSTR2, rSTR2, 8
+#else
+ ld rWORD3, 16(rSTR1)
+ ld rWORD4, 16(rSTR2)
+#endif
+ cmpld cr6, rWORD5, rWORD6
+ bne cr5, L(dLcr5)
+L(dLoop2):
+#ifdef __LITTLE_ENDIAN__
+ ldbrx rWORD5, 0, rSTR1
+ ldbrx rWORD6, 0, rSTR2
+ addi rSTR1, rSTR1, 8
+ addi rSTR2, rSTR2, 8
+#else
+ ld rWORD5, 24(rSTR1)
+ ld rWORD6, 24(rSTR2)
+#endif
+ cmpld cr5, rWORD7, rWORD8
+ bne cr7, L(dLcr7)
+L(dLoop3):
+#ifdef __LITTLE_ENDIAN__
+ ldbrx rWORD7, 0, rSTR1
+ ldbrx rWORD8, 0, rSTR2
+ addi rSTR1, rSTR1, 8
+ addi rSTR2, rSTR2, 8
+#else
+ ldu rWORD7, 32(rSTR1)
+ ldu rWORD8, 32(rSTR2)
+#endif
+ bne- cr1, L(dLcr1)
+ cmpld cr7, rWORD1, rWORD2
+ bdnz+ L(dLoop)
+
+L(dL4):
+ cmpld cr1, rWORD3, rWORD4
+ bne cr6, L(dLcr6)
+ cmpld cr6, rWORD5, rWORD6
+ bne cr5, L(dLcr5)
+ cmpld cr5, rWORD7, rWORD8
+L(d44):
+ bne cr7, L(dLcr7)
+L(d34):
+ bne cr1, L(dLcr1)
+L(d24):
+ bne cr6, L(dLcr6)
+L(d14):
+ sldi. r12, rN, 3
+ bne cr5, L(dLcr5)
+L(d04):
+ ld rWORD8, -8(r1)
+ ld rWORD7, -16(r1)
+ subfic rN, r12, 64 /* Shift count is 64 - (rN * 8). */
+ beq L(zeroLength)
+/* At this point we have a remainder of 1 to 7 bytes to compare. Since
+ we are aligned it is safe to load the whole double word, and use
+ shift right double to eliminate bits beyond the compare length. */
+L(d00):
+#ifdef __LITTLE_ENDIAN__
+ ldbrx rWORD1, 0, rSTR1
+ ldbrx rWORD2, 0, rSTR2
+ addi rSTR1, rSTR1, 8
+ addi rSTR2, rSTR2, 8
+#else
+ ld rWORD1, 8(rSTR1)
+ ld rWORD2, 8(rSTR2)
+#endif
+ srd rWORD1, rWORD1, rN
+ srd rWORD2, rWORD2, rN
+ cmpld cr7, rWORD1, rWORD2
+ bne cr7, L(dLcr7x)
+ li rRTN, 0
+ blr
+
+ .align 4
+L(dLcr7):
+ ld rWORD8, -8(r1)
+ ld rWORD7, -16(r1)
+L(dLcr7x):
+ li rRTN, 1
+ bgtlr cr7
+ li rRTN, -1
+ blr
+ .align 4
+L(dLcr1):
+ ld rWORD8, -8(r1)
+ ld rWORD7, -16(r1)
+L(dLcr1x):
+ li rRTN, 1
+ bgtlr cr1
+ li rRTN, -1
+ blr
+ .align 4
+L(dLcr6):
+ ld rWORD8, -8(r1)
+ ld rWORD7, -16(r1)
+L(dLcr6x):
+ li rRTN, 1
+ bgtlr cr6
+ li rRTN, -1
+ blr
+ .align 4
+L(dLcr5):
+ ld rWORD8, -8(r1)
+ ld rWORD7, -16(r1)
+L(dLcr5x):
+ li rRTN, 1
+ bgtlr cr5
+ li rRTN, -1
+ blr
+
+ .align 4
+L(bytealigned):
+ mtctr rN /* Power4 wants mtctr 1st in dispatch group */
+#if 0
+/* Huh? We've already branched on cr6! */
+ beq- cr6, L(zeroLength)
+#endif
+
+/* We need to prime this loop. This loop is swing modulo scheduled
+ to avoid pipe delays. The dependent instruction latencies (load to
+ compare to conditional branch) is 2 to 3 cycles. In this loop each
+ dispatch group ends in a branch and takes 1 cycle. Effectively
+ the first iteration of the loop only serves to load operands and
+ branches based on compares are delayed until the next loop.
+
+ So we must precondition some registers and condition codes so that
+ we don't exit the loop early on the first iteration. */
+
+ lbz rWORD1, 0(rSTR1)
+ lbz rWORD2, 0(rSTR2)
+ bdz- L(b11)
+ cmpld cr7, rWORD1, rWORD2
+ lbz rWORD3, 1(rSTR1)
+ lbz rWORD4, 1(rSTR2)
+ bdz- L(b12)
+ cmpld cr1, rWORD3, rWORD4
+ lbzu rWORD5, 2(rSTR1)
+ lbzu rWORD6, 2(rSTR2)
+ bdz- L(b13)
+ .align 4
+L(bLoop):
+ lbzu rWORD1, 1(rSTR1)
+ lbzu rWORD2, 1(rSTR2)
+ bne- cr7, L(bLcr7)
+
+ cmpld cr6, rWORD5, rWORD6
+ bdz- L(b3i)
+
+ lbzu rWORD3, 1(rSTR1)
+ lbzu rWORD4, 1(rSTR2)
+ bne- cr1, L(bLcr1)
+
+ cmpld cr7, rWORD1, rWORD2
+ bdz- L(b2i)
+
+ lbzu rWORD5, 1(rSTR1)
+ lbzu rWORD6, 1(rSTR2)
+ bne- cr6, L(bLcr6)
+
+ cmpld cr1, rWORD3, rWORD4
+ bdnz+ L(bLoop)
+
+/* We speculatively loading bytes before we have tested the previous
+ bytes. But we must avoid overrunning the length (in the ctr) to
+ prevent these speculative loads from causing a segfault. In this
+ case the loop will exit early (before the all pending bytes are
+ tested. In this case we must complete the pending operations
+ before returning. */
+L(b1i):
+ bne- cr7, L(bLcr7)
+ bne- cr1, L(bLcr1)
+ b L(bx56)
+ .align 4
+L(b2i):
+ bne- cr6, L(bLcr6)
+ bne- cr7, L(bLcr7)
+ b L(bx34)
+ .align 4
+L(b3i):
+ bne- cr1, L(bLcr1)
+ bne- cr6, L(bLcr6)
+ b L(bx12)
+ .align 4
+L(bLcr7):
+ li rRTN, 1
+ bgtlr cr7
+ li rRTN, -1
+ blr
+L(bLcr1):
+ li rRTN, 1
+ bgtlr cr1
+ li rRTN, -1
+ blr
+L(bLcr6):
+ li rRTN, 1
+ bgtlr cr6
+ li rRTN, -1
+ blr
+
+L(b13):
+ bne- cr7, L(bx12)
+ bne- cr1, L(bx34)
+L(bx56):
+ sub rRTN, rWORD5, rWORD6
+ blr
+ nop
+L(b12):
+ bne- cr7, L(bx12)
+L(bx34):
+ sub rRTN, rWORD3, rWORD4
+ blr
+L(b11):
+L(bx12):
+ sub rRTN, rWORD1, rWORD2
+ blr
+ .align 4
+L(zeroLength):
+ li rRTN, 0
+ blr
+
+ .align 4
+/* At this point we know the strings have different alignment and the
+ compare length is at least 8 bytes. r12 contains the low order
+ 3 bits of rSTR1 and cr5 contains the result of the logical compare
+ of r12 to 0. If r12 == 0 then rStr1 is double word
+ aligned and can perform the DWunaligned loop.
+
+ Otherwise we know that rSTR1 is not already DW aligned yet.
+ So we can force the string addresses to the next lower DW
+ boundary and special case this first DW using shift left to
+ eliminate bits preceding the first byte. Since we want to join the
+ normal (DWaligned) compare loop, starting at the second double word,
+ we need to adjust the length (rN) and special case the loop
+ versioning for the first DW. This ensures that the loop count is
+ correct and the first DW (shifted) is in the expected resister pair. */
+#define rSHL r29 /* Unaligned shift left count. */
+#define rSHR r28 /* Unaligned shift right count. */
+#define rWORD8_SHIFT r27 /* Left rotation temp for rWORD2. */
+#define rWORD2_SHIFT r26 /* Left rotation temp for rWORD4. */
+#define rWORD4_SHIFT r25 /* Left rotation temp for rWORD6. */
+#define rWORD6_SHIFT r24 /* Left rotation temp for rWORD8. */
+L(unaligned):
+ std rSHL, -24(r1)
+ cfi_offset(rSHL, -24)
+ clrldi rSHL, rSTR2, 61
+ beq- cr6, L(duzeroLength)
+ std rSHR, -32(r1)
+ cfi_offset(rSHR, -32)
+ beq cr5, L(DWunaligned)
+ std rWORD8_SHIFT, -40(r1)
+ cfi_offset(rWORD8_SHIFT, -40)
+/* Adjust the logical start of rSTR2 to compensate for the extra bits
+ in the 1st rSTR1 DW. */
+ sub rWORD8_SHIFT, rSTR2, r12
+/* But do not attempt to address the DW before that DW that contains
+ the actual start of rSTR2. */
+ clrrdi rSTR2, rSTR2, 3
+ std rWORD2_SHIFT, -48(r1)
+/* Compute the left/right shift counts for the unaligned rSTR2,
+ compensating for the logical (DW aligned) start of rSTR1. */
+ clrldi rSHL, rWORD8_SHIFT, 61
+ clrrdi rSTR1, rSTR1, 3
+ std rWORD4_SHIFT, -56(r1)
+ sldi rSHL, rSHL, 3
+ cmpld cr5, rWORD8_SHIFT, rSTR2
+ add rN, rN, r12
+ sldi rWORD6, r12, 3
+ std rWORD6_SHIFT, -64(r1)
+ cfi_offset(rWORD2_SHIFT, -48)
+ cfi_offset(rWORD4_SHIFT, -56)
+ cfi_offset(rWORD6_SHIFT, -64)
+ subfic rSHR, rSHL, 64
+ srdi r0, rN, 5 /* Divide by 32 */
+ andi. r12, rN, 24 /* Get the DW remainder */
+/* We normally need to load 2 DWs to start the unaligned rSTR2, but in
+ this special case those bits may be discarded anyway. Also we
+ must avoid loading a DW where none of the bits are part of rSTR2 as
+ this may cross a page boundary and cause a page fault. */
+ li rWORD8, 0
+ blt cr5, L(dus0)
+#ifdef __LITTLE_ENDIAN__
+ ldbrx rWORD8, 0, rSTR2
+ addi rSTR2, rSTR2, 8
+#else
+ ld rWORD8, 0(rSTR2)
+ addi rSTR2, rSTR2, 8
+#endif
+ sld rWORD8, rWORD8, rSHL
+
+L(dus0):
+#ifdef __LITTLE_ENDIAN__
+ ldbrx rWORD1, 0, rSTR1
+ ldbrx rWORD2, 0, rSTR2
+ addi rSTR1, rSTR1, 8
+ addi rSTR2, rSTR2, 8
+#else
+ ld rWORD1, 0(rSTR1)
+ ld rWORD2, 0(rSTR2)
+#endif
+ cmpldi cr1, r12, 16
+ cmpldi cr7, rN, 32
+ srd r12, rWORD2, rSHR
+ clrldi rN, rN, 61
+ beq L(duPs4)
+ mtctr r0 /* Power4 wants mtctr 1st in dispatch group */
+ or rWORD8, r12, rWORD8
+ bgt cr1, L(duPs3)
+ beq cr1, L(duPs2)
+
+/* Remainder is 8 */
+ .align 4
+L(dusP1):
+ sld rWORD8_SHIFT, rWORD2, rSHL
+ sld rWORD7, rWORD1, rWORD6
+ sld rWORD8, rWORD8, rWORD6
+ bge cr7, L(duP1e)
+/* At this point we exit early with the first double word compare
+ complete and remainder of 0 to 7 bytes. See L(du14) for details on
+ how we handle the remaining bytes. */
+ cmpld cr5, rWORD7, rWORD8
+ sldi. rN, rN, 3
+ bne cr5, L(duLcr5)
+ cmpld cr7, rN, rSHR
+ beq L(duZeroReturn)
+ li r0, 0
+ ble cr7, L(dutrim)
+#ifdef __LITTLE_ENDIAN__
+ ldbrx rWORD2, 0, rSTR2
+ addi rSTR2, rSTR2, 8
+#else
+ ld rWORD2, 8(rSTR2)
+#endif
+ srd r0, rWORD2, rSHR
+ b L(dutrim)
+/* Remainder is 16 */
+ .align 4
+L(duPs2):
+ sld rWORD6_SHIFT, rWORD2, rSHL
+ sld rWORD5, rWORD1, rWORD6
+ sld rWORD6, rWORD8, rWORD6
+ b L(duP2e)
+/* Remainder is 24 */
+ .align 4
+L(duPs3):
+ sld rWORD4_SHIFT, rWORD2, rSHL
+ sld rWORD3, rWORD1, rWORD6
+ sld rWORD4, rWORD8, rWORD6
+ b L(duP3e)
+/* Count is a multiple of 32, remainder is 0 */
+ .align 4
+L(duPs4):
+ mtctr r0 /* Power4 wants mtctr 1st in dispatch group */
+ or rWORD8, r12, rWORD8
+ sld rWORD2_SHIFT, rWORD2, rSHL
+ sld rWORD1, rWORD1, rWORD6
+ sld rWORD2, rWORD8, rWORD6
+ b L(duP4e)
+
+/* At this point we know rSTR1 is double word aligned and the
+ compare length is at least 8 bytes. */
+ .align 4
+L(DWunaligned):
+ std rWORD8_SHIFT, -40(r1)
+ clrrdi rSTR2, rSTR2, 3
+ std rWORD2_SHIFT, -48(r1)
+ srdi r0, rN, 5 /* Divide by 32 */
+ std rWORD4_SHIFT, -56(r1)
+ andi. r12, rN, 24 /* Get the DW remainder */
+ std rWORD6_SHIFT, -64(r1)
+ cfi_offset(rWORD8_SHIFT, -40)
+ cfi_offset(rWORD2_SHIFT, -48)
+ cfi_offset(rWORD4_SHIFT, -56)
+ cfi_offset(rWORD6_SHIFT, -64)
+ sldi rSHL, rSHL, 3
+#ifdef __LITTLE_ENDIAN__
+ ldbrx rWORD6, 0, rSTR2
+ addi rSTR2, rSTR2, 8
+ ldbrx rWORD8, 0, rSTR2
+ addi rSTR2, rSTR2, 8
+#else
+ ld rWORD6, 0(rSTR2)
+ ldu rWORD8, 8(rSTR2)
+#endif
+ cmpldi cr1, r12, 16
+ cmpldi cr7, rN, 32
+ clrldi rN, rN, 61
+ subfic rSHR, rSHL, 64
+ sld rWORD6_SHIFT, rWORD6, rSHL
+ beq L(duP4)
+ mtctr r0 /* Power4 wants mtctr 1st in dispatch group */
+ bgt cr1, L(duP3)
+ beq cr1, L(duP2)
+
+/* Remainder is 8 */
+ .align 4
+L(duP1):
+ srd r12, rWORD8, rSHR
+#ifdef __LITTLE_ENDIAN__
+ ldbrx rWORD7, 0, rSTR1
+ addi rSTR1, rSTR1, 8
+#else
+ ld rWORD7, 0(rSTR1)
+#endif
+ sld rWORD8_SHIFT, rWORD8, rSHL
+ or rWORD8, r12, rWORD6_SHIFT
+ blt cr7, L(duP1x)
+L(duP1e):
+#ifdef __LITTLE_ENDIAN__
+ ldbrx rWORD1, 0, rSTR1
+ ldbrx rWORD2, 0, rSTR2
+ addi rSTR1, rSTR1, 8
+ addi rSTR2, rSTR2, 8
+#else
+ ld rWORD1, 8(rSTR1)
+ ld rWORD2, 8(rSTR2)
+#endif
+ cmpld cr5, rWORD7, rWORD8
+ srd r0, rWORD2, rSHR
+ sld rWORD2_SHIFT, rWORD2, rSHL
+ or rWORD2, r0, rWORD8_SHIFT
+#ifdef __LITTLE_ENDIAN__
+ ldbrx rWORD3, 0, rSTR1
+ ldbrx rWORD4, 0, rSTR2
+ addi rSTR1, rSTR1, 8
+ addi rSTR2, rSTR2, 8
+#else
+ ld rWORD3, 16(rSTR1)
+ ld rWORD4, 16(rSTR2)
+#endif
+ cmpld cr7, rWORD1, rWORD2
+ srd r12, rWORD4, rSHR
+ sld rWORD4_SHIFT, rWORD4, rSHL
+ bne cr5, L(duLcr5)
+ or rWORD4, r12, rWORD2_SHIFT
+#ifdef __LITTLE_ENDIAN__
+ ldbrx rWORD5, 0, rSTR1
+ ldbrx rWORD6, 0, rSTR2
+ addi rSTR1, rSTR1, 8
+ addi rSTR2, rSTR2, 8
+#else
+ ld rWORD5, 24(rSTR1)
+ ld rWORD6, 24(rSTR2)
+#endif
+ cmpld cr1, rWORD3, rWORD4
+ srd r0, rWORD6, rSHR
+ sld rWORD6_SHIFT, rWORD6, rSHL
+ bne cr7, L(duLcr7)
+ or rWORD6, r0, rWORD4_SHIFT
+ cmpld cr6, rWORD5, rWORD6
+ b L(duLoop3)
+ .align 4
+/* At this point we exit early with the first double word compare
+ complete and remainder of 0 to 7 bytes. See L(du14) for details on
+ how we handle the remaining bytes. */
+L(duP1x):
+ cmpld cr5, rWORD7, rWORD8
+ sldi. rN, rN, 3
+ bne cr5, L(duLcr5)
+ cmpld cr7, rN, rSHR
+ beq L(duZeroReturn)
+ li r0, 0
+ ble cr7, L(dutrim)
+#ifdef __LITTLE_ENDIAN__
+ ldbrx rWORD2, 0, rSTR2
+ addi rSTR2, rSTR2, 8
+#else
+ ld rWORD2, 8(rSTR2)
+#endif
+ srd r0, rWORD2, rSHR
+ b L(dutrim)
+/* Remainder is 16 */
+ .align 4
+L(duP2):
+ srd r0, rWORD8, rSHR
+#ifdef __LITTLE_ENDIAN__
+ ldbrx rWORD5, 0, rSTR1
+ addi rSTR1, rSTR1, 8
+#else
+ ld rWORD5, 0(rSTR1)
+#endif
+ or rWORD6, r0, rWORD6_SHIFT
+ sld rWORD6_SHIFT, rWORD8, rSHL
+L(duP2e):
+#ifdef __LITTLE_ENDIAN__
+ ldbrx rWORD7, 0, rSTR1
+ ldbrx rWORD8, 0, rSTR2
+ addi rSTR1, rSTR1, 8
+ addi rSTR2, rSTR2, 8
+#else
+ ld rWORD7, 8(rSTR1)
+ ld rWORD8, 8(rSTR2)
+#endif
+ cmpld cr6, rWORD5, rWORD6
+ srd r12, rWORD8, rSHR
+ sld rWORD8_SHIFT, rWORD8, rSHL
+ or rWORD8, r12, rWORD6_SHIFT
+ blt cr7, L(duP2x)
+#ifdef __LITTLE_ENDIAN__
+ ldbrx rWORD1, 0, rSTR1
+ ldbrx rWORD2, 0, rSTR2
+ addi rSTR1, rSTR1, 8
+ addi rSTR2, rSTR2, 8
+#else
+ ld rWORD1, 16(rSTR1)
+ ld rWORD2, 16(rSTR2)
+#endif
+ cmpld cr5, rWORD7, rWORD8
+ bne cr6, L(duLcr6)
+ srd r0, rWORD2, rSHR
+ sld rWORD2_SHIFT, rWORD2, rSHL
+ or rWORD2, r0, rWORD8_SHIFT
+#ifdef __LITTLE_ENDIAN__
+ ldbrx rWORD3, 0, rSTR1
+ ldbrx rWORD4, 0, rSTR2
+ addi rSTR1, rSTR1, 8
+ addi rSTR2, rSTR2, 8
+#else
+ ld rWORD3, 24(rSTR1)
+ ld rWORD4, 24(rSTR2)
+#endif
+ cmpld cr7, rWORD1, rWORD2
+ bne cr5, L(duLcr5)
+ srd r12, rWORD4, rSHR
+ sld rWORD4_SHIFT, rWORD4, rSHL
+ or rWORD4, r12, rWORD2_SHIFT
+#ifndef __LITTLE_ENDIAN__
+ addi rSTR1, rSTR1, 8
+ addi rSTR2, rSTR2, 8
+#endif
+ cmpld cr1, rWORD3, rWORD4
+ b L(duLoop2)
+ .align 4
+L(duP2x):
+ cmpld cr5, rWORD7, rWORD8
+#ifndef __LITTLE_ENDIAN__
+ addi rSTR1, rSTR1, 8
+ addi rSTR2, rSTR2, 8
+#endif
+ bne cr6, L(duLcr6)
+ sldi. rN, rN, 3
+ bne cr5, L(duLcr5)
+ cmpld cr7, rN, rSHR
+ beq L(duZeroReturn)
+ li r0, 0
+ ble cr7, L(dutrim)
+#ifdef __LITTLE_ENDIAN__
+ ldbrx rWORD2, 0, rSTR2
+ addi rSTR2, rSTR2, 8
+#else
+ ld rWORD2, 8(rSTR2)
+#endif
+ srd r0, rWORD2, rSHR
+ b L(dutrim)
+
+/* Remainder is 24 */
+ .align 4
+L(duP3):
+ srd r12, rWORD8, rSHR
+#ifdef __LITTLE_ENDIAN__
+ ldbrx rWORD3, 0, rSTR1
+ addi rSTR1, rSTR1, 8
+#else
+ ld rWORD3, 0(rSTR1)
+#endif
+ sld rWORD4_SHIFT, rWORD8, rSHL
+ or rWORD4, r12, rWORD6_SHIFT
+L(duP3e):
+#ifdef __LITTLE_ENDIAN__
+ ldbrx rWORD5, 0, rSTR1
+ ldbrx rWORD6, 0, rSTR2
+ addi rSTR1, rSTR1, 8
+ addi rSTR2, rSTR2, 8
+#else
+ ld rWORD5, 8(rSTR1)
+ ld rWORD6, 8(rSTR2)
+#endif
+ cmpld cr1, rWORD3, rWORD4
+ srd r0, rWORD6, rSHR
+ sld rWORD6_SHIFT, rWORD6, rSHL
+ or rWORD6, r0, rWORD4_SHIFT
+#ifdef __LITTLE_ENDIAN__
+ ldbrx rWORD7, 0, rSTR1
+ ldbrx rWORD8, 0, rSTR2
+ addi rSTR1, rSTR1, 8
+ addi rSTR2, rSTR2, 8
+#else
+ ld rWORD7, 16(rSTR1)
+ ld rWORD8, 16(rSTR2)
+#endif
+ cmpld cr6, rWORD5, rWORD6
+ bne cr1, L(duLcr1)
+ srd r12, rWORD8, rSHR
+ sld rWORD8_SHIFT, rWORD8, rSHL
+ or rWORD8, r12, rWORD6_SHIFT
+ blt cr7, L(duP3x)
+#ifdef __LITTLE_ENDIAN__
+ ldbrx rWORD1, 0, rSTR1
+ ldbrx rWORD2, 0, rSTR2
+ addi rSTR1, rSTR1, 8
+ addi rSTR2, rSTR2, 8
+#else
+ ld rWORD1, 24(rSTR1)
+ ld rWORD2, 24(rSTR2)
+#endif
+ cmpld cr5, rWORD7, rWORD8
+ bne cr6, L(duLcr6)
+ srd r0, rWORD2, rSHR
+ sld rWORD2_SHIFT, rWORD2, rSHL
+ or rWORD2, r0, rWORD8_SHIFT
+#ifndef __LITTLE_ENDIAN__
+ addi rSTR1, rSTR1, 16
+ addi rSTR2, rSTR2, 16
+#endif
+ cmpld cr7, rWORD1, rWORD2
+ b L(duLoop1)
+ .align 4
+L(duP3x):
+#ifndef __LITTLE_ENDIAN__
+ addi rSTR1, rSTR1, 16
+ addi rSTR2, rSTR2, 16
+#endif
+#if 0
+/* Huh? We've already branched on cr1! */
+ bne cr1, L(duLcr1)
+#endif
+ cmpld cr5, rWORD7, rWORD8
+ bne cr6, L(duLcr6)
+ sldi. rN, rN, 3
+ bne cr5, L(duLcr5)
+ cmpld cr7, rN, rSHR
+ beq L(duZeroReturn)
+ li r0, 0
+ ble cr7, L(dutrim)
+#ifdef __LITTLE_ENDIAN__
+ ldbrx rWORD2, 0, rSTR2
+ addi rSTR2, rSTR2, 8
+#else
+ ld rWORD2, 8(rSTR2)
+#endif
+ srd r0, rWORD2, rSHR
+ b L(dutrim)
+
+/* Count is a multiple of 32, remainder is 0 */
+ .align 4
+L(duP4):
+ mtctr r0 /* Power4 wants mtctr 1st in dispatch group */
+ srd r0, rWORD8, rSHR
+#ifdef __LITTLE_ENDIAN__
+ ldbrx rWORD1, 0, rSTR1
+ addi rSTR1, rSTR1, 8
+#else
+ ld rWORD1, 0(rSTR1)
+#endif
+ sld rWORD2_SHIFT, rWORD8, rSHL
+ or rWORD2, r0, rWORD6_SHIFT
+L(duP4e):
+#ifdef __LITTLE_ENDIAN__
+ ldbrx rWORD3, 0, rSTR1
+ ldbrx rWORD4, 0, rSTR2
+ addi rSTR1, rSTR1, 8
+ addi rSTR2, rSTR2, 8
+#else
+ ld rWORD3, 8(rSTR1)
+ ld rWORD4, 8(rSTR2)
+#endif
+ cmpld cr7, rWORD1, rWORD2
+ srd r12, rWORD4, rSHR
+ sld rWORD4_SHIFT, rWORD4, rSHL
+ or rWORD4, r12, rWORD2_SHIFT
+#ifdef __LITTLE_ENDIAN__
+ ldbrx rWORD5, 0, rSTR1
+ ldbrx rWORD6, 0, rSTR2
+ addi rSTR1, rSTR1, 8
+ addi rSTR2, rSTR2, 8
+#else
+ ld rWORD5, 16(rSTR1)
+ ld rWORD6, 16(rSTR2)
+#endif
+ cmpld cr1, rWORD3, rWORD4
+ bne cr7, L(duLcr7)
+ srd r0, rWORD6, rSHR
+ sld rWORD6_SHIFT, rWORD6, rSHL
+ or rWORD6, r0, rWORD4_SHIFT
+#ifdef __LITTLE_ENDIAN__
+ ldbrx rWORD7, 0, rSTR1
+ ldbrx rWORD8, 0, rSTR2
+ addi rSTR1, rSTR1, 8
+ addi rSTR2, rSTR2, 8
+#else
+ ldu rWORD7, 24(rSTR1)
+ ldu rWORD8, 24(rSTR2)
+#endif
+ cmpld cr6, rWORD5, rWORD6
+ bne cr1, L(duLcr1)
+ srd r12, rWORD8, rSHR
+ sld rWORD8_SHIFT, rWORD8, rSHL
+ or rWORD8, r12, rWORD6_SHIFT
+ cmpld cr5, rWORD7, rWORD8
+ bdz- L(du24) /* Adjust CTR as we start with +4 */
+/* This is the primary loop */
+ .align 4
+L(duLoop):
+#ifdef __LITTLE_ENDIAN__
+ ldbrx rWORD1, 0, rSTR1
+ ldbrx rWORD2, 0, rSTR2
+ addi rSTR1, rSTR1, 8
+ addi rSTR2, rSTR2, 8
+#else
+ ld rWORD1, 8(rSTR1)
+ ld rWORD2, 8(rSTR2)
+#endif
+ cmpld cr1, rWORD3, rWORD4
+ bne cr6, L(duLcr6)
+ srd r0, rWORD2, rSHR
+ sld rWORD2_SHIFT, rWORD2, rSHL
+ or rWORD2, r0, rWORD8_SHIFT
+L(duLoop1):
+#ifdef __LITTLE_ENDIAN__
+ ldbrx rWORD3, 0, rSTR1
+ ldbrx rWORD4, 0, rSTR2
+ addi rSTR1, rSTR1, 8
+ addi rSTR2, rSTR2, 8
+#else
+ ld rWORD3, 16(rSTR1)
+ ld rWORD4, 16(rSTR2)
+#endif
+ cmpld cr6, rWORD5, rWORD6
+ bne cr5, L(duLcr5)
+ srd r12, rWORD4, rSHR
+ sld rWORD4_SHIFT, rWORD4, rSHL
+ or rWORD4, r12, rWORD2_SHIFT
+L(duLoop2):
+#ifdef __LITTLE_ENDIAN__
+ ldbrx rWORD5, 0, rSTR1
+ ldbrx rWORD6, 0, rSTR2
+ addi rSTR1, rSTR1, 8
+ addi rSTR2, rSTR2, 8
+#else
+ ld rWORD5, 24(rSTR1)
+ ld rWORD6, 24(rSTR2)
+#endif
+ cmpld cr5, rWORD7, rWORD8
+ bne cr7, L(duLcr7)
+ srd r0, rWORD6, rSHR
+ sld rWORD6_SHIFT, rWORD6, rSHL
+ or rWORD6, r0, rWORD4_SHIFT
+L(duLoop3):
+#ifdef __LITTLE_ENDIAN__
+ ldbrx rWORD7, 0, rSTR1
+ ldbrx rWORD8, 0, rSTR2
+ addi rSTR1, rSTR1, 8
+ addi rSTR2, rSTR2, 8
+#else
+ ldu rWORD7, 32(rSTR1)
+ ldu rWORD8, 32(rSTR2)
+#endif
+ cmpld cr7, rWORD1, rWORD2
+ bne- cr1, L(duLcr1)
+ srd r12, rWORD8, rSHR
+ sld rWORD8_SHIFT, rWORD8, rSHL
+ or rWORD8, r12, rWORD6_SHIFT
+ bdnz+ L(duLoop)
+
+L(duL4):
+#if 0
+/* Huh? We've already branched on cr1! */
+ bne cr1, L(duLcr1)
+#endif
+ cmpld cr1, rWORD3, rWORD4
+ bne cr6, L(duLcr6)
+ cmpld cr6, rWORD5, rWORD6
+ bne cr5, L(duLcr5)
+ cmpld cr5, rWORD7, rWORD8
+L(du44):
+ bne cr7, L(duLcr7)
+L(du34):
+ bne cr1, L(duLcr1)
+L(du24):
+ bne cr6, L(duLcr6)
+L(du14):
+ sldi. rN, rN, 3
+ bne cr5, L(duLcr5)
+/* At this point we have a remainder of 1 to 7 bytes to compare. We use
+ shift right double to eliminate bits beyond the compare length.
+
+ However it may not be safe to load rWORD2 which may be beyond the
+ string length. So we compare the bit length of the remainder to
+ the right shift count (rSHR). If the bit count is less than or equal
+ we do not need to load rWORD2 (all significant bits are already in
+ rWORD8_SHIFT). */
+ cmpld cr7, rN, rSHR
+ beq L(duZeroReturn)
+ li r0, 0
+ ble cr7, L(dutrim)
+#ifdef __LITTLE_ENDIAN__
+ ldbrx rWORD2, 0, rSTR2
+ addi rSTR2, rSTR2, 8
+#else
+ ld rWORD2, 8(rSTR2)
+#endif
+ srd r0, rWORD2, rSHR
+ .align 4
+L(dutrim):
+#ifdef __LITTLE_ENDIAN__
+ ldbrx rWORD1, 0, rSTR1
+#else
+ ld rWORD1, 8(rSTR1)
+#endif
+ ld rWORD8, -8(r1)
+ subfic rN, rN, 64 /* Shift count is 64 - (rN * 8). */
+ or rWORD2, r0, rWORD8_SHIFT
+ ld rWORD7, -16(r1)
+ ld rSHL, -24(r1)
+ srd rWORD1, rWORD1, rN
+ srd rWORD2, rWORD2, rN
+ ld rSHR, -32(r1)
+ ld rWORD8_SHIFT, -40(r1)
+ li rRTN, 0
+ cmpld cr7, rWORD1, rWORD2
+ ld rWORD2_SHIFT, -48(r1)
+ ld rWORD4_SHIFT, -56(r1)
+ beq cr7, L(dureturn24)
+ li rRTN, 1
+ ld rWORD6_SHIFT, -64(r1)
+ bgtlr cr7
+ li rRTN, -1
+ blr
+ .align 4
+L(duLcr7):
+ ld rWORD8, -8(r1)
+ ld rWORD7, -16(r1)
+ li rRTN, 1
+ bgt cr7, L(dureturn29)
+ ld rSHL, -24(r1)
+ ld rSHR, -32(r1)
+ li rRTN, -1
+ b L(dureturn27)
+ .align 4
+L(duLcr1):
+ ld rWORD8, -8(r1)
+ ld rWORD7, -16(r1)
+ li rRTN, 1
+ bgt cr1, L(dureturn29)
+ ld rSHL, -24(r1)
+ ld rSHR, -32(r1)
+ li rRTN, -1
+ b L(dureturn27)
+ .align 4
+L(duLcr6):
+ ld rWORD8, -8(r1)
+ ld rWORD7, -16(r1)
+ li rRTN, 1
+ bgt cr6, L(dureturn29)
+ ld rSHL, -24(r1)
+ ld rSHR, -32(r1)
+ li rRTN, -1
+ b L(dureturn27)
+ .align 4
+L(duLcr5):
+ ld rWORD8, -8(r1)
+ ld rWORD7, -16(r1)
+ li rRTN, 1
+ bgt cr5, L(dureturn29)
+ ld rSHL, -24(r1)
+ ld rSHR, -32(r1)
+ li rRTN, -1
+ b L(dureturn27)
+ .align 3
+L(duZeroReturn):
+ li rRTN, 0
+ .align 4
+L(dureturn):
+ ld rWORD8, -8(r1)
+ ld rWORD7, -16(r1)
+L(dureturn29):
+ ld rSHL, -24(r1)
+ ld rSHR, -32(r1)
+L(dureturn27):
+ ld rWORD8_SHIFT, -40(r1)
+L(dureturn26):
+ ld rWORD2_SHIFT, -48(r1)
+L(dureturn25):
+ ld rWORD4_SHIFT, -56(r1)
+L(dureturn24):
+ ld rWORD6_SHIFT, -64(r1)
+ blr
+L(duzeroLength):
+ li rRTN, 0
+ blr
+
+END (MEMCMP)
+libc_hidden_builtin_def (memcmp)
+weak_alias (memcmp, bcmp)
diff --git a/REORG.TODO/sysdeps/powerpc/powerpc64/power4/memcopy.h b/REORG.TODO/sysdeps/powerpc/powerpc64/power4/memcopy.h
new file mode 100644
index 0000000000..9a4ff79f4a
--- /dev/null
+++ b/REORG.TODO/sysdeps/powerpc/powerpc64/power4/memcopy.h
@@ -0,0 +1 @@
+#include "../../powerpc32/power4/memcopy.h"
diff --git a/REORG.TODO/sysdeps/powerpc/powerpc64/power4/memcpy.S b/REORG.TODO/sysdeps/powerpc/powerpc64/power4/memcpy.S
new file mode 100644
index 0000000000..2e96376b9f
--- /dev/null
+++ b/REORG.TODO/sysdeps/powerpc/powerpc64/power4/memcpy.S
@@ -0,0 +1,477 @@
+/* Optimized memcpy implementation for PowerPC64.
+ Copyright (C) 2003-2017 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>
+
+/* __ptr_t [r3] memcpy (__ptr_t dst [r3], __ptr_t src [r4], size_t len [r5]);
+ Returns 'dst'.
+
+ Memcpy handles short copies (< 32-bytes) using a binary move blocks
+ (no loops) of lwz/stw. The tail (remaining 1-3) bytes is handled
+ with the appropriate combination of byte and halfword load/stores.
+ There is minimal effort to optimize the alignment of short moves.
+ The 64-bit implementations of POWER3 and POWER4 do a reasonable job
+ of handling unaligned load/stores that do not cross 32-byte boundaries.
+
+ Longer moves (>= 32-bytes) justify the effort to get at least the
+ destination doubleword (8-byte) aligned. Further optimization is
+ possible when both source and destination are doubleword aligned.
+ Each case has a optimized unrolled loop. */
+
+#ifndef MEMCPY
+# define MEMCPY memcpy
+#endif
+ .machine power4
+EALIGN (MEMCPY, 5, 0)
+ CALL_MCOUNT 3
+
+ cmpldi cr1,5,31
+ neg 0,3
+ std 3,-16(1)
+ std 31,-8(1)
+ cfi_offset(31,-8)
+ andi. 11,3,7 /* check alignment of dst. */
+ clrldi 0,0,61 /* Number of bytes until the 1st doubleword of dst. */
+ clrldi 10,4,61 /* check alignment of src. */
+ cmpldi cr6,5,8
+ ble- cr1,.L2 /* If move < 32 bytes use short move code. */
+ cmpld cr6,10,11
+ mr 12,4
+ srdi 9,5,3 /* Number of full double words remaining. */
+ mtcrf 0x01,0
+ mr 31,5
+ beq .L0
+
+ subf 31,0,5
+ /* Move 0-7 bytes as needed to get the destination doubleword aligned. */
+1: bf 31,2f
+ lbz 6,0(12)
+ addi 12,12,1
+ stb 6,0(3)
+ addi 3,3,1
+2: bf 30,4f
+ lhz 6,0(12)
+ addi 12,12,2
+ sth 6,0(3)
+ addi 3,3,2
+4: bf 29,0f
+ lwz 6,0(12)
+ addi 12,12,4
+ stw 6,0(3)
+ addi 3,3,4
+0:
+ clrldi 10,12,61 /* check alignment of src again. */
+ srdi 9,31,3 /* Number of full double words remaining. */
+
+ /* Copy doublewords from source to destination, assuming the
+ destination is aligned on a doubleword boundary.
+
+ At this point we know there are at least 25 bytes left (32-7) to copy.
+ The next step is to determine if the source is also doubleword aligned.
+ If not branch to the unaligned move code at .L6. which uses
+ a load, shift, store strategy.
+
+ Otherwise source and destination are doubleword aligned, and we can
+ the optimized doubleword copy loop. */
+.L0:
+ clrldi 11,31,61
+ mtcrf 0x01,9
+ cmpldi cr1,11,0
+ bne- cr6,.L6 /* If source is not DW aligned. */
+
+ /* Move doublewords where destination and source are DW aligned.
+ Use a unrolled loop to copy 4 doubleword (32-bytes) per iteration.
+ If the copy is not an exact multiple of 32 bytes, 1-3
+ doublewords are copied as needed to set up the main loop. After
+ the main loop exits there may be a tail of 1-7 bytes. These byte are
+ copied a word/halfword/byte at a time as needed to preserve alignment. */
+
+ srdi 8,31,5
+ cmpldi cr1,9,4
+ cmpldi cr6,11,0
+ mr 11,12
+
+ bf 30,1f
+ ld 6,0(12)
+ ld 7,8(12)
+ addi 11,12,16
+ mtctr 8
+ std 6,0(3)
+ std 7,8(3)
+ addi 10,3,16
+ bf 31,4f
+ ld 0,16(12)
+ std 0,16(3)
+ blt cr1,3f
+ addi 11,12,24
+ addi 10,3,24
+ b 4f
+ .align 4
+1:
+ mr 10,3
+ mtctr 8
+ bf 31,4f
+ ld 6,0(12)
+ addi 11,12,8
+ std 6,0(3)
+ addi 10,3,8
+
+ .align 4
+4:
+ ld 6,0(11)
+ ld 7,8(11)
+ ld 8,16(11)
+ ld 0,24(11)
+ addi 11,11,32
+2:
+ std 6,0(10)
+ std 7,8(10)
+ std 8,16(10)
+ std 0,24(10)
+ addi 10,10,32
+ bdnz 4b
+3:
+
+ rldicr 0,31,0,60
+ mtcrf 0x01,31
+ beq cr6,0f
+.L9:
+ add 3,3,0
+ add 12,12,0
+
+/* At this point we have a tail of 0-7 bytes and we know that the
+ destination is double word aligned. */
+4: bf 29,2f
+ lwz 6,0(12)
+ addi 12,12,4
+ stw 6,0(3)
+ addi 3,3,4
+2: bf 30,1f
+ lhz 6,0(12)
+ addi 12,12,2
+ sth 6,0(3)
+ addi 3,3,2
+1: bf 31,0f
+ lbz 6,0(12)
+ stb 6,0(3)
+0:
+ /* Return original dst pointer. */
+ ld 31,-8(1)
+ ld 3,-16(1)
+ blr
+
+/* Copy up to 31 bytes. This divided into two cases 0-8 bytes and 9-31
+ bytes. Each case is handled without loops, using binary (1,2,4,8)
+ tests.
+
+ In the short (0-8 byte) case no attempt is made to force alignment
+ of either source or destination. The hardware will handle the
+ unaligned load/stores with small delays for crossing 32- 64-byte, and
+ 4096-byte boundaries. Since these short moves are unlikely to be
+ unaligned or cross these boundaries, the overhead to force
+ alignment is not justified.
+
+ The longer (9-31 byte) move is more likely to cross 32- or 64-byte
+ boundaries. Since only loads are sensitive to the 32-/64-byte
+ boundaries it is more important to align the source then the
+ destination. If the source is not already word aligned, we first
+ move 1-3 bytes as needed. Since we are only word aligned we don't
+ use double word load/stores to insure that all loads are aligned.
+ While the destination and stores may still be unaligned, this
+ is only an issue for page (4096 byte boundary) crossing, which
+ should be rare for these short moves. The hardware handles this
+ case automatically with a small delay. */
+
+ .align 4
+.L2:
+ mtcrf 0x01,5
+ neg 8,4
+ clrrdi 11,4,2
+ andi. 0,8,3
+ ble cr6,.LE8 /* Handle moves of 0-8 bytes. */
+/* At least 9 bytes left. Get the source word aligned. */
+ cmpldi cr1,5,16
+ mr 10,5
+ mr 12,4
+ cmpldi cr6,0,2
+ beq .L3 /* If the source is already word aligned skip this. */
+/* Copy 1-3 bytes to get source address word aligned. */
+ lwz 6,0(11)
+ subf 10,0,5
+ add 12,4,0
+ blt cr6,5f
+ srdi 7,6,16
+ bgt cr6,3f
+#ifdef __LITTLE_ENDIAN__
+ sth 7,0(3)
+#else
+ sth 6,0(3)
+#endif
+ b 7f
+ .align 4
+3:
+#ifdef __LITTLE_ENDIAN__
+ rotlwi 6,6,24
+ stb 6,0(3)
+ sth 7,1(3)
+#else
+ stb 7,0(3)
+ sth 6,1(3)
+#endif
+ b 7f
+ .align 4
+5:
+#ifdef __LITTLE_ENDIAN__
+ rotlwi 6,6,8
+#endif
+ stb 6,0(3)
+7:
+ cmpldi cr1,10,16
+ add 3,3,0
+ mtcrf 0x01,10
+ .align 4
+.L3:
+/* At least 6 bytes left and the source is word aligned. */
+ blt cr1,8f
+16: /* Move 16 bytes. */
+ lwz 6,0(12)
+ lwz 7,4(12)
+ stw 6,0(3)
+ lwz 6,8(12)
+ stw 7,4(3)
+ lwz 7,12(12)
+ addi 12,12,16
+ stw 6,8(3)
+ stw 7,12(3)
+ addi 3,3,16
+8: /* Move 8 bytes. */
+ bf 28,4f
+ lwz 6,0(12)
+ lwz 7,4(12)
+ addi 12,12,8
+ stw 6,0(3)
+ stw 7,4(3)
+ addi 3,3,8
+4: /* Move 4 bytes. */
+ bf 29,2f
+ lwz 6,0(12)
+ addi 12,12,4
+ stw 6,0(3)
+ addi 3,3,4
+2: /* Move 2-3 bytes. */
+ bf 30,1f
+ lhz 6,0(12)
+ sth 6,0(3)
+ bf 31,0f
+ lbz 7,2(12)
+ stb 7,2(3)
+ ld 3,-16(1)
+ blr
+1: /* Move 1 byte. */
+ bf 31,0f
+ lbz 6,0(12)
+ stb 6,0(3)
+0:
+ /* Return original dst pointer. */
+ ld 3,-16(1)
+ blr
+
+/* Special case to copy 0-8 bytes. */
+ .align 4
+.LE8:
+ mr 12,4
+ bne cr6,4f
+/* Would have liked to use use ld/std here but the 630 processors are
+ slow for load/store doubles that are not at least word aligned.
+ Unaligned Load/Store word execute with only a 1 cycle penalty. */
+ lwz 6,0(4)
+ lwz 7,4(4)
+ stw 6,0(3)
+ stw 7,4(3)
+ /* Return original dst pointer. */
+ ld 3,-16(1)
+ blr
+ .align 4
+4: bf 29,2b
+ lwz 6,0(4)
+ stw 6,0(3)
+6:
+ bf 30,5f
+ lhz 7,4(4)
+ sth 7,4(3)
+ bf 31,0f
+ lbz 8,6(4)
+ stb 8,6(3)
+ ld 3,-16(1)
+ blr
+ .align 4
+5:
+ bf 31,0f
+ lbz 6,4(4)
+ stb 6,4(3)
+ .align 4
+0:
+ /* Return original dst pointer. */
+ ld 3,-16(1)
+ blr
+
+ .align 4
+.L6:
+
+ /* Copy doublewords where the destination is aligned but the source is
+ not. Use aligned doubleword loads from the source, shifted to realign
+ the data, to allow aligned destination stores. */
+ addi 11,9,-1 /* loop DW count is one less than total */
+ subf 5,10,12
+ sldi 10,10,3
+ mr 4,3
+ srdi 8,11,2 /* calculate the 32 byte loop count */
+ ld 6,0(5)
+ mtcrf 0x01,11
+ cmpldi cr6,9,4
+ mtctr 8
+ ld 7,8(5)
+ subfic 9,10,64
+ bf 30,1f
+
+ /* there are at least two DWs to copy */
+#ifdef __LITTLE_ENDIAN__
+ srd 0,6,10
+ sld 8,7,9
+#else
+ sld 0,6,10
+ srd 8,7,9
+#endif
+ or 0,0,8
+ ld 6,16(5)
+ std 0,0(4)
+#ifdef __LITTLE_ENDIAN__
+ srd 0,7,10
+ sld 8,6,9
+#else
+ sld 0,7,10
+ srd 8,6,9
+#endif
+ or 0,0,8
+ ld 7,24(5)
+ std 0,8(4)
+ addi 4,4,16
+ addi 5,5,32
+ blt cr6,8f /* if total DWs = 3, then bypass loop */
+ bf 31,4f
+ /* there is a third DW to copy */
+#ifdef __LITTLE_ENDIAN__
+ srd 0,6,10
+ sld 8,7,9
+#else
+ sld 0,6,10
+ srd 8,7,9
+#endif
+ or 0,0,8
+ std 0,0(4)
+ mr 6,7
+ ld 7,0(5)
+ addi 5,5,8
+ addi 4,4,8
+ beq cr6,8f /* if total DWs = 4, then bypass loop */
+ b 4f
+ .align 4
+1:
+#ifdef __LITTLE_ENDIAN__
+ srd 0,6,10
+ sld 8,7,9
+#else
+ sld 0,6,10
+ srd 8,7,9
+#endif
+ addi 5,5,16
+ or 0,0,8
+ bf 31,4f
+ mr 6,7
+ ld 7,0(5)
+ addi 5,5,8
+ std 0,0(4)
+ addi 4,4,8
+ .align 4
+/* copy 32 bytes at a time */
+4:
+#ifdef __LITTLE_ENDIAN__
+ srd 0,6,10
+ sld 8,7,9
+#else
+ sld 0,6,10
+ srd 8,7,9
+#endif
+ or 0,0,8
+ ld 6,0(5)
+ std 0,0(4)
+#ifdef __LITTLE_ENDIAN__
+ srd 0,7,10
+ sld 8,6,9
+#else
+ sld 0,7,10
+ srd 8,6,9
+#endif
+ or 0,0,8
+ ld 7,8(5)
+ std 0,8(4)
+#ifdef __LITTLE_ENDIAN__
+ srd 0,6,10
+ sld 8,7,9
+#else
+ sld 0,6,10
+ srd 8,7,9
+#endif
+ or 0,0,8
+ ld 6,16(5)
+ std 0,16(4)
+#ifdef __LITTLE_ENDIAN__
+ srd 0,7,10
+ sld 8,6,9
+#else
+ sld 0,7,10
+ srd 8,6,9
+#endif
+ or 0,0,8
+ ld 7,24(5)
+ std 0,24(4)
+ addi 5,5,32
+ addi 4,4,32
+ bdnz+ 4b
+ .align 4
+8:
+ /* calculate and store the final DW */
+#ifdef __LITTLE_ENDIAN__
+ srd 0,6,10
+ sld 8,7,9
+#else
+ sld 0,6,10
+ srd 8,7,9
+#endif
+ or 0,0,8
+ std 0,0(4)
+3:
+ rldicr 0,31,0,60
+ mtcrf 0x01,31
+ bne cr1,.L9 /* If the tail is 0 bytes we are done! */
+ /* Return original dst pointer. */
+ ld 31,-8(1)
+ ld 3,-16(1)
+ blr
+END_GEN_TB (MEMCPY,TB_TOCLESS)
+libc_hidden_builtin_def (memcpy)
diff --git a/REORG.TODO/sysdeps/powerpc/powerpc64/power4/memset.S b/REORG.TODO/sysdeps/powerpc/powerpc64/power4/memset.S
new file mode 100644
index 0000000000..a57214e0b0
--- /dev/null
+++ b/REORG.TODO/sysdeps/powerpc/powerpc64/power4/memset.S
@@ -0,0 +1,251 @@
+/* Optimized memset implementation for PowerPC64.
+ Copyright (C) 1997-2017 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>
+
+/* __ptr_t [r3] memset (__ptr_t s [r3], int c [r4], size_t n [r5]));
+ Returns 's'.
+
+ The memset is done in three sizes: byte (8 bits), word (32 bits),
+ cache line (256 bits). There is a special case for setting cache lines
+ to 0, to take advantage of the dcbz instruction. */
+
+#ifndef MEMSET
+# define MEMSET memset
+#endif
+ .machine power4
+EALIGN (MEMSET, 5, 0)
+ CALL_MCOUNT 3
+
+#define rTMP r0
+#define rRTN r3 /* Initial value of 1st argument. */
+#define rMEMP0 r3 /* Original value of 1st arg. */
+#define rCHR r4 /* Char to set in each byte. */
+#define rLEN r5 /* Length of region to set. */
+#define rMEMP r6 /* Address at which we are storing. */
+#define rALIGN r7 /* Number of bytes we are setting now (when aligning). */
+#define rMEMP2 r8
+
+#define rNEG64 r8 /* Constant -64 for clearing with dcbz. */
+#define rCLS r8 /* Cache line size obtained from static. */
+#define rCLM r9 /* Cache line size mask to check for cache alignment. */
+L(_memset):
+/* Take care of case for size <= 4. */
+ cmpldi cr1, rLEN, 8
+ andi. rALIGN, rMEMP0, 7
+ mr rMEMP, rMEMP0
+ ble- cr1, L(small)
+
+/* Align to doubleword boundary. */
+ cmpldi cr5, rLEN, 31
+ insrdi rCHR, rCHR, 8, 48 /* Replicate byte to halfword. */
+ beq+ L(aligned2)
+ mtcrf 0x01, rMEMP0
+ subfic rALIGN, rALIGN, 8
+ cror 28,30,31 /* Detect odd word aligned. */
+ add rMEMP, rMEMP, rALIGN
+ sub rLEN, rLEN, rALIGN
+ insrdi rCHR, rCHR, 16, 32 /* Replicate halfword to word. */
+ bt 29, L(g4)
+/* Process the even word of doubleword. */
+ bf+ 31, L(g2)
+ stb rCHR, 0(rMEMP0)
+ bt 30, L(g4x)
+L(g2):
+ sth rCHR, -6(rMEMP)
+L(g4x):
+ stw rCHR, -4(rMEMP)
+ b L(aligned)
+/* Process the odd word of doubleword. */
+L(g4):
+ bf 28, L(g4x) /* If false, word aligned on odd word. */
+ bf+ 31, L(g0)
+ stb rCHR, 0(rMEMP0)
+ bt 30, L(aligned)
+L(g0):
+ sth rCHR, -2(rMEMP)
+
+/* Handle the case of size < 31. */
+L(aligned2):
+ insrdi rCHR, rCHR, 16, 32 /* Replicate halfword to word. */
+L(aligned):
+ mtcrf 0x01, rLEN
+ ble cr5, L(medium)
+/* Align to 32-byte boundary. */
+ andi. rALIGN, rMEMP, 0x18
+ subfic rALIGN, rALIGN, 0x20
+ insrdi rCHR, rCHR, 32, 0 /* Replicate word to double word. */
+ beq L(caligned)
+ mtcrf 0x01, rALIGN
+ add rMEMP, rMEMP, rALIGN
+ sub rLEN, rLEN, rALIGN
+ cmplwi cr1, rALIGN, 0x10
+ mr rMEMP2, rMEMP
+ bf 28, L(a1)
+ stdu rCHR, -8(rMEMP2)
+L(a1): blt cr1, L(a2)
+ std rCHR, -8(rMEMP2)
+ stdu rCHR, -16(rMEMP2)
+L(a2):
+
+/* Now aligned to a 32 byte boundary. */
+L(caligned):
+ cmpldi cr1, rCHR, 0
+ clrrdi. rALIGN, rLEN, 5
+ mtcrf 0x01, rLEN
+ beq cr1, L(zloopstart) /* Special case for clearing memory using dcbz. */
+L(nondcbz):
+ srdi rTMP, rALIGN, 5
+ mtctr rTMP
+ beq L(medium) /* We may not actually get to do a full line. */
+ clrldi. rLEN, rLEN, 59
+ add rMEMP, rMEMP, rALIGN
+ li rNEG64, -0x40
+ bdz L(cloopdone)
+
+L(c3): dcbtst rNEG64, rMEMP
+ std rCHR, -8(rMEMP)
+ std rCHR, -16(rMEMP)
+ std rCHR, -24(rMEMP)
+ stdu rCHR, -32(rMEMP)
+ bdnz L(c3)
+L(cloopdone):
+ std rCHR, -8(rMEMP)
+ std rCHR, -16(rMEMP)
+ cmpldi cr1, rLEN, 16
+ std rCHR, -24(rMEMP)
+ stdu rCHR, -32(rMEMP)
+ beqlr
+ add rMEMP, rMEMP, rALIGN
+ b L(medium_tail2)
+
+ .align 5
+/* Clear lines of memory in 128-byte chunks. */
+L(zloopstart):
+/* If the remaining length is less the 32 bytes, don't bother getting
+ the cache line size. */
+ beq L(medium)
+ li rCLS,128 /* cache line size is 128 */
+
+/* Now we know the cache line size, and it is not 32-bytes, but
+ we may not yet be aligned to the cache line. May have a partial
+ line to fill, so touch it 1st. */
+ dcbt 0,rMEMP
+L(getCacheAligned):
+ cmpldi cr1,rLEN,32
+ andi. rTMP,rMEMP,127
+ blt cr1,L(handletail32)
+ beq L(cacheAligned)
+ addi rMEMP,rMEMP,32
+ addi rLEN,rLEN,-32
+ std rCHR,-32(rMEMP)
+ std rCHR,-24(rMEMP)
+ std rCHR,-16(rMEMP)
+ std rCHR,-8(rMEMP)
+ b L(getCacheAligned)
+
+/* Now we are aligned to the cache line and can use dcbz. */
+L(cacheAligned):
+ cmpld cr1,rLEN,rCLS
+ blt cr1,L(handletail32)
+ dcbz 0,rMEMP
+ subf rLEN,rCLS,rLEN
+ add rMEMP,rMEMP,rCLS
+ b L(cacheAligned)
+
+/* We are here because the cache line size was set and was not 32-bytes
+ and the remainder (rLEN) is less than the actual cache line size.
+ So set up the preconditions for L(nondcbz) and go there. */
+L(handletail32):
+ clrrwi. rALIGN, rLEN, 5
+ b L(nondcbz)
+
+ .align 5
+L(small):
+/* Memset of 8 bytes or less. */
+ cmpldi cr6, rLEN, 4
+ cmpldi cr5, rLEN, 1
+ ble cr6,L(le4)
+ subi rLEN, rLEN, 4
+ stb rCHR,0(rMEMP)
+ stb rCHR,1(rMEMP)
+ stb rCHR,2(rMEMP)
+ stb rCHR,3(rMEMP)
+ addi rMEMP,rMEMP, 4
+ cmpldi cr5, rLEN, 1
+L(le4):
+ cmpldi cr1, rLEN, 3
+ bltlr cr5
+ stb rCHR, 0(rMEMP)
+ beqlr cr5
+ stb rCHR, 1(rMEMP)
+ bltlr cr1
+ stb rCHR, 2(rMEMP)
+ beqlr cr1
+ stb rCHR, 3(rMEMP)
+ blr
+
+/* Memset of 0-31 bytes. */
+ .align 5
+L(medium):
+ insrdi rCHR, rCHR, 32, 0 /* Replicate word to double word. */
+ cmpldi cr1, rLEN, 16
+L(medium_tail2):
+ add rMEMP, rMEMP, rLEN
+L(medium_tail):
+ bt- 31, L(medium_31t)
+ bt- 30, L(medium_30t)
+L(medium_30f):
+ bt- 29, L(medium_29t)
+L(medium_29f):
+ bge- cr1, L(medium_27t)
+ bflr- 28
+ std rCHR, -8(rMEMP)
+ blr
+
+L(medium_31t):
+ stbu rCHR, -1(rMEMP)
+ bf- 30, L(medium_30f)
+L(medium_30t):
+ sthu rCHR, -2(rMEMP)
+ bf- 29, L(medium_29f)
+L(medium_29t):
+ stwu rCHR, -4(rMEMP)
+ blt- cr1, L(medium_27f)
+L(medium_27t):
+ std rCHR, -8(rMEMP)
+ stdu rCHR, -16(rMEMP)
+L(medium_27f):
+ bflr- 28
+L(medium_28t):
+ std rCHR, -8(rMEMP)
+ blr
+END_GEN_TB (MEMSET,TB_TOCLESS)
+libc_hidden_builtin_def (memset)
+
+/* Copied from bzero.S to prevent the linker from inserting a stub
+ between bzero and memset. */
+ENTRY (__bzero)
+ CALL_MCOUNT 3
+ mr r5,r4
+ li r4,0
+ b L(_memset)
+END (__bzero)
+#ifndef __bzero
+weak_alias (__bzero, bzero)
+#endif
diff --git a/REORG.TODO/sysdeps/powerpc/powerpc64/power4/multiarch/Implies b/REORG.TODO/sysdeps/powerpc/powerpc64/power4/multiarch/Implies
new file mode 100644
index 0000000000..30edcf7f9d
--- /dev/null
+++ b/REORG.TODO/sysdeps/powerpc/powerpc64/power4/multiarch/Implies
@@ -0,0 +1 @@
+powerpc/powerpc64/multiarch
diff --git a/REORG.TODO/sysdeps/powerpc/powerpc64/power4/strncmp.S b/REORG.TODO/sysdeps/powerpc/powerpc64/power4/strncmp.S
new file mode 100644
index 0000000000..2b0c00dfb2
--- /dev/null
+++ b/REORG.TODO/sysdeps/powerpc/powerpc64/power4/strncmp.S
@@ -0,0 +1,225 @@
+/* Optimized strcmp implementation for PowerPC64.
+ Copyright (C) 2003-2017 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 STRNCMP
+# define STRNCMP strncmp
+#endif
+
+/* See strlen.s for comments on how the end-of-string testing works. */
+
+/* int [r3] strncmp (const char *s1 [r3], const char *s2 [r4], size_t size [r5]) */
+
+EALIGN (STRNCMP, 4, 0)
+ CALL_MCOUNT 3
+
+#define rTMP2 r0
+#define rRTN r3
+#define rSTR1 r3 /* first string arg */
+#define rSTR2 r4 /* second string arg */
+#define rN r5 /* max string length */
+#define rWORD1 r6 /* current word in s1 */
+#define rWORD2 r7 /* current word in s2 */
+#define rWORD3 r10
+#define rWORD4 r11
+#define rFEFE r8 /* constant 0xfefefefefefefeff (-0x0101010101010101) */
+#define r7F7F r9 /* constant 0x7f7f7f7f7f7f7f7f */
+#define rNEG r10 /* ~(word in s1 | 0x7f7f7f7f7f7f7f7f) */
+#define rBITDIF r11 /* bits that differ in s1 & s2 words */
+#define rTMP r12
+
+ dcbt 0,rSTR1
+ or rTMP, rSTR2, rSTR1
+ lis r7F7F, 0x7f7f
+ dcbt 0,rSTR2
+ clrldi. rTMP, rTMP, 61
+ cmpldi cr1, rN, 0
+ lis rFEFE, -0x101
+ bne L(unaligned)
+/* We are doubleword aligned so set up for two loops. first a double word
+ loop, then fall into the byte loop if any residual. */
+ srdi. rTMP, rN, 3
+ clrldi rN, rN, 61
+ addi rFEFE, rFEFE, -0x101
+ addi r7F7F, r7F7F, 0x7f7f
+ cmpldi cr1, rN, 0
+ beq L(unaligned)
+
+ mtctr rTMP /* Power4 wants mtctr 1st in dispatch group. */
+ ld rWORD1, 0(rSTR1)
+ ld rWORD2, 0(rSTR2)
+ sldi rTMP, rFEFE, 32
+ insrdi r7F7F, r7F7F, 32, 0
+ add rFEFE, rFEFE, rTMP
+ b L(g1)
+
+L(g0):
+ ldu rWORD1, 8(rSTR1)
+ bne- cr1, L(different)
+ ldu rWORD2, 8(rSTR2)
+L(g1): add rTMP, rFEFE, rWORD1
+ nor rNEG, r7F7F, rWORD1
+ bdz L(tail)
+ and. rTMP, rTMP, rNEG
+ cmpd cr1, rWORD1, rWORD2
+ beq+ L(g0)
+
+/* OK. We've hit the end of the string. We need to be careful that
+ we don't compare two strings as different because of gunk beyond
+ the end of the strings... */
+
+#ifdef __LITTLE_ENDIAN__
+L(endstring):
+ addi rTMP2, rTMP, -1
+ beq cr1, L(equal)
+ andc rTMP2, rTMP2, rTMP
+ rldimi rTMP2, rTMP2, 1, 0
+ and rWORD2, rWORD2, rTMP2 /* Mask off gunk. */
+ and rWORD1, rWORD1, rTMP2
+ cmpd cr1, rWORD1, rWORD2
+ beq cr1, L(equal)
+ xor rBITDIF, rWORD1, rWORD2 /* rBITDIF has bits that differ. */
+ neg rNEG, rBITDIF
+ and rNEG, rNEG, rBITDIF /* rNEG has LS bit that differs. */
+ cntlzd rNEG, rNEG /* bitcount of the bit. */
+ andi. rNEG, rNEG, 56 /* bitcount to LS byte that differs. */
+ sld rWORD1, rWORD1, rNEG /* shift left to clear MS bytes. */
+ sld rWORD2, rWORD2, rNEG
+ xor. rBITDIF, rWORD1, rWORD2
+ sub rRTN, rWORD1, rWORD2
+ blt- L(highbit)
+ sradi rRTN, rRTN, 63 /* must return an int. */
+ ori rRTN, rRTN, 1
+ blr
+L(equal):
+ li rRTN, 0
+ blr
+
+L(different):
+ ld rWORD1, -8(rSTR1)
+ xor rBITDIF, rWORD1, rWORD2 /* rBITDIF has bits that differ. */
+ neg rNEG, rBITDIF
+ and rNEG, rNEG, rBITDIF /* rNEG has LS bit that differs. */
+ cntlzd rNEG, rNEG /* bitcount of the bit. */
+ andi. rNEG, rNEG, 56 /* bitcount to LS byte that differs. */
+ sld rWORD1, rWORD1, rNEG /* shift left to clear MS bytes. */
+ sld rWORD2, rWORD2, rNEG
+ xor. rBITDIF, rWORD1, rWORD2
+ sub rRTN, rWORD1, rWORD2
+ blt- L(highbit)
+ sradi rRTN, rRTN, 63
+ ori rRTN, rRTN, 1
+ blr
+L(highbit):
+ sradi rRTN, rWORD2, 63
+ ori rRTN, rRTN, 1
+ blr
+
+#else
+L(endstring):
+ and rTMP, r7F7F, rWORD1
+ beq cr1, L(equal)
+ add rTMP, rTMP, r7F7F
+ xor. rBITDIF, rWORD1, rWORD2
+ andc rNEG, rNEG, rTMP
+ blt- L(highbit)
+ cntlzd rBITDIF, rBITDIF
+ cntlzd rNEG, rNEG
+ addi rNEG, rNEG, 7
+ cmpd cr1, rNEG, rBITDIF
+ sub rRTN, rWORD1, rWORD2
+ blt- cr1, L(equal)
+ sradi rRTN, rRTN, 63 /* must return an int. */
+ ori rRTN, rRTN, 1
+ blr
+L(equal):
+ li rRTN, 0
+ blr
+
+L(different):
+ ld rWORD1, -8(rSTR1)
+ xor. rBITDIF, rWORD1, rWORD2
+ sub rRTN, rWORD1, rWORD2
+ blt- L(highbit)
+ sradi rRTN, rRTN, 63
+ ori rRTN, rRTN, 1
+ blr
+L(highbit):
+ sradi rRTN, rWORD2, 63
+ ori rRTN, rRTN, 1
+ blr
+#endif
+
+/* Oh well. In this case, we just do a byte-by-byte comparison. */
+ .align 4
+L(tail):
+ and. rTMP, rTMP, rNEG
+ cmpd cr1, rWORD1, rWORD2
+ bne- L(endstring)
+ addi rSTR1, rSTR1, 8
+ bne- cr1, L(different)
+ addi rSTR2, rSTR2, 8
+ cmpldi cr1, rN, 0
+L(unaligned):
+ mtctr rN /* Power4 wants mtctr 1st in dispatch group */
+ ble cr1, L(ux)
+L(uz):
+ lbz rWORD1, 0(rSTR1)
+ lbz rWORD2, 0(rSTR2)
+ .align 4
+L(u1):
+ cmpdi cr1, rWORD1, 0
+ bdz L(u4)
+ cmpd rWORD1, rWORD2
+ beq- cr1, L(u4)
+ bne- L(u4)
+ lbzu rWORD3, 1(rSTR1)
+ lbzu rWORD4, 1(rSTR2)
+ cmpdi cr1, rWORD3, 0
+ bdz L(u3)
+ cmpd rWORD3, rWORD4
+ beq- cr1, L(u3)
+ bne- L(u3)
+ lbzu rWORD1, 1(rSTR1)
+ lbzu rWORD2, 1(rSTR2)
+ cmpdi cr1, rWORD1, 0
+ bdz L(u4)
+ cmpd rWORD1, rWORD2
+ beq- cr1, L(u4)
+ bne- L(u4)
+ lbzu rWORD3, 1(rSTR1)
+ lbzu rWORD4, 1(rSTR2)
+ cmpdi cr1, rWORD3, 0
+ bdz L(u3)
+ cmpd rWORD3, rWORD4
+ beq- cr1, L(u3)
+ bne- L(u3)
+ lbzu rWORD1, 1(rSTR1)
+ lbzu rWORD2, 1(rSTR2)
+ b L(u1)
+
+L(u3): sub rRTN, rWORD3, rWORD4
+ blr
+L(u4): sub rRTN, rWORD1, rWORD2
+ blr
+L(ux):
+ li rRTN, 0
+ blr
+END (STRNCMP)
+libc_hidden_builtin_def (strncmp)