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package-update/base/glibc/x86_64-string.patch

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# --- SDE-COPYRIGHT-NOTE-BEGIN ---
# This copyright note is auto-generated by ./scripts/Create-CopyPatch.
#
# Filename: package/.../glibc/x86_64-string.patch
# Copyright (C) 2006 The T2 SDE Project
#
# More information can be found in the files COPYING and README.
#
# This patch file is dual-licensed. It is available under the license the
# patched project is licensed under, as long as it is an OpenSource license
# as defined at http://www.opensource.org/ (e.g. BSD, X11) or under the terms
# of the GNU General Public License as published by the Free Software
# Foundation; either version 2 of the License, or (at your option) any later
# version.
# --- SDE-COPYRIGHT-NOTE-END ---
diff -Npruw -x CVS -x vssver.scc -x powerpc -x sync_file_range.c libc/sysdeps/unix/sysv/linux/x86_64/dl-procinfo.c libc/sysdeps/unix/sysv/linux/x86_64/dl-procinfo.c
--- libc/sysdeps/unix/sysv/linux/x86_64/dl-procinfo.c 2005-12-14 02:09:28.000000000 -0600
+++ libc/sysdeps/unix/sysv/linux/x86_64/dl-procinfo.c 2006-04-14 16:38:16.819949000 -0500
@@ -1,5 +1,5 @@
#ifdef IS_IN_ldconfig
# include <sysdeps/i386/dl-procinfo.c>
#else
-# include <sysdeps/generic/dl-procinfo.c>
+# include <sysdeps/x86_64/dl-procinfo.c>
#endif
diff -Npruw -x CVS -x vssver.scc -x powerpc -x sync_file_range.c libc/sysdeps/x86_64/bzero.S libc/sysdeps/x86_64/bzero.S
--- libc/sysdeps/x86_64/bzero.S 2002-08-31 12:30:07.000000000 -0500
+++ libc/sysdeps/x86_64/bzero.S 2006-05-05 15:23:27.884691000 -0500
@@ -1,3 +1,5 @@
+#define USE_AS_BZERO
#define memset __bzero
#include <sysdeps/x86_64/memset.S>
+
weak_alias (__bzero, bzero)
diff -Npruw -x CVS -x vssver.scc -x powerpc -x sync_file_range.c libc/sysdeps/x86_64/dl-machine.h libc/sysdeps/x86_64/dl-machine.h
--- libc/sysdeps/x86_64/dl-machine.h 2005-07-31 12:49:44.000000000 -0500
+++ libc/sysdeps/x86_64/dl-machine.h 2006-05-09 15:17:03.570496000 -0500
@@ -1,4 +1,5 @@
-/* Machine-dependent ELF dynamic relocation inline functions. x86-64 version.
+/* Machine-dependent ELF dynamic relocation inline functions (x86-64 version).
+
Copyright (C) 2001, 2002, 2003, 2004, 2005 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Andreas Jaeger <[email protected]>.
@@ -219,6 +220,53 @@ dl_platform_init (void)
if (GLRO(dl_platform) != NULL && *GLRO(dl_platform) == '\0')
/* Avoid an empty string which would disturb us. */
GLRO(dl_platform) = NULL;
+
+ asm volatile
+ (
+ "mov $0x80000000, %%eax # get highest level of support \n\t"
+ "cpuid \n\t"
+ "cmp $0x80000006, %%eax # check for L2 info support \n\t"
+ "jb 1f \n\t"
+ "xor %%eax, %%eax # get manufacturer string \n\t"
+ "cpuid \n\t"
+ "cmp $0x68747541, %%ebx # check for 'Auth'... \n\t"
+ "jne 4f \n\t"
+ "cmp $0x69746e65, %%edx # 'enti'... \n\t"
+ "jne 4f \n\t"
+ "cmp $0x444d4163, %%ecx # 'cAMD' \n\t"
+ "je 2f \n\t"
+ "4: \n\t"
+ "cmp $0x756e6547, %%ebx # check for 'Genu'... \n\t"
+ "jne 1f \n\t"
+ "cmp $0x49656e69, %%edx # 'ineI'... \n\t"
+ "jne 1f \n\t"
+ "cmp $0x6c65746e, %%ecx # 'ntel' \n\t"
+ "je 3f \n\t"
+ "jmp 1f \n\t"
+ "2: # AMD \n\t"
+ "mov $0x80000001, %%eax # get features support\n\t"
+ "cpuid \n\t"
+ "test $1 << 31, %%edx # check for 3DNow! support\n\t"
+ "setnzb %2 \n\t"
+ "mov $0x80000005, %%eax # get L1 info for AMD\n\t"
+ "cpuid \n\t"
+ "shr $24, %%ecx \n\t"
+ "shl $10, %%ecx # convert from KB to B \n\t"
+ "mov %%rcx, %0 \n\t"
+ "3: # AMD, Intel \n\t"
+ "mov $0x80000006, %%eax # get L2 info\n\t"
+ "cpuid \n\t"
+ "shr $16, %%ecx \n\t"
+ "shl $10, %%ecx # convert from KB to B \n\t"
+ "mov %%rcx, %1 \n\t"
+ "1: # other manufacturers\n\t"
+ : "=m" (GLRO (dl_cache1size)), "=m" (GLRO (dl_cache2size)), "=m" (GLRO (dl_prefetchw))
+ :
+ : "%rax", "%rbx", "%rcx", "%rdx", "cc"
+ );
+
+ GLRO (dl_cache1sizehalf) = GLRO (dl_cache1size) / 2;
+ GLRO (dl_cache2sizehalf) = GLRO (dl_cache2size) / 2;
}
static inline Elf64_Addr
diff -Npruw -x CVS -x vssver.scc -x powerpc -x sync_file_range.c libc/sysdeps/x86_64/dl-procinfo.c libc/sysdeps/x86_64/dl-procinfo.c
--- libc/sysdeps/x86_64/dl-procinfo.c 1969-12-31 18:00:00.000000000 -0600
+++ libc/sysdeps/x86_64/dl-procinfo.c 2006-05-05 16:23:38.030341000 -0500
@@ -0,0 +1,123 @@
+/* Data for x86-64 version of processor capability information.
+ Copyright (C) 2004 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+ Contributed by Andreas Jaeger <[email protected]>, 2004.
+
+ 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, write to the Free
+ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+ 02111-1307 USA. */
+
+/* This information must be kept in sync with the _DL_HWCAP_COUNT and
+ _DL_PLATFORM_COUNT definitions in procinfo.h.
+
+ If anything should be added here check whether the size of each string
+ is still ok with the given array size.
+
+ All the #ifdefs in the definitions ar equite irritating but
+ necessary if we want to avoid duplicating the information. There
+ are three different modes:
+
+ - PROCINFO_DECL is defined. This means we are only interested in
+ declarations.
+
+ - PROCINFO_DECL is not defined:
+
+ + if SHARED is defined the file is included in an array
+ initializer. The .element = { ... } syntax is needed.
+
+ + if SHARED is not defined a normal array initialization is
+ needed.
+ */
+
+#ifndef PROCINFO_CLASS
+#define PROCINFO_CLASS
+#endif
+
+ /* _dl_cache1size: size of L1 cache */
+#if !defined PROCINFO_DECL && defined SHARED
+ ._dl_cache1size
+#else
+PROCINFO_CLASS long int _dl_cache1size
+#endif
+#ifndef PROCINFO_DECL
+= 1024 * 32 /* defaults to 32 */
+#endif
+#if !defined SHARED || defined PROCINFO_DECL
+;
+#else
+,
+#endif
+
+ /* _dl_cache1sizehalf: 1/2 size of L1 cache */
+#if !defined PROCINFO_DECL && defined SHARED
+ ._dl_cache1sizehalf
+#else
+PROCINFO_CLASS long int _dl_cache1sizehalf
+#endif
+#ifndef PROCINFO_DECL
+= 1024 * 32 / 2 /* defaults to 16k */
+#endif
+#if !defined SHARED || defined PROCINFO_DECL
+;
+#else
+,
+#endif
+
+ /* _dl_cache2size: size of L2 cache */
+#if !defined PROCINFO_DECL && defined SHARED
+ ._dl_cache2size
+#else
+PROCINFO_CLASS long int _dl_cache2size
+#endif
+#ifndef PROCINFO_DECL
+= 1024 * 1024 /* defaults to 1M */
+#endif
+#if !defined SHARED || defined PROCINFO_DECL
+;
+#else
+,
+#endif
+
+ /* _dl_cache2sizehalf: 1/2 size of L2 cache */
+#if !defined PROCINFO_DECL && defined SHARED
+ ._dl_cache2sizehalf
+#else
+PROCINFO_CLASS long int _dl_cache2sizehalf
+#endif
+#ifndef PROCINFO_DECL
+= 1024 * 1024 / 2 /* defaults to 512k */
+#endif
+#if !defined SHARED || defined PROCINFO_DECL
+;
+#else
+,
+#endif
+
+ /* _dl_prefetchw: prefetchw supported */
+#if !defined PROCINFO_DECL && defined SHARED
+ ._dl_prefetchw
+#else
+PROCINFO_CLASS int _dl_prefetchw
+#endif
+#ifndef PROCINFO_DECL
+= 0 /* defaults to no */
+#endif
+#if !defined SHARED || defined PROCINFO_DECL
+;
+#else
+,
+#endif
+
+#undef PROCINFO_DECL
+#undef PROCINFO_CLASS
diff -Npruw -x CVS -x vssver.scc -x powerpc -x sync_file_range.c libc/sysdeps/x86_64/elf/rtld-global-offsets.sym libc/sysdeps/x86_64/elf/rtld-global-offsets.sym
--- libc/sysdeps/x86_64/elf/rtld-global-offsets.sym 1969-12-31 18:00:00.000000000 -0600
+++ libc/sysdeps/x86_64/elf/rtld-global-offsets.sym 2006-04-18 14:46:40.056693000 -0500
@@ -0,0 +1,11 @@
+#define SHARED 1
+
+#include <ldsodefs.h>
+
+#define rtdl_global_offsetof(mem) offsetof (struct rtld_global_ro, mem)
+
+RTLD_GLOBAL_DL_CACHE1SIZE rtdl_global_offsetof (_dl_cache1size)
+RTLD_GLOBAL_DL_CACHE1SIZEHALF rtdl_global_offsetof (_dl_cache1sizehalf)
+RTLD_GLOBAL_DL_CACHE2SIZE rtdl_global_offsetof (_dl_cache2size)
+RTLD_GLOBAL_DL_CACHE2SIZEHALF rtdl_global_offsetof (_dl_cache2sizehalf)
+RTLD_GLOBAL_DL_PREFETCHW rtdl_global_offsetof (_dl_prefetchw)
diff -Npruw -x CVS -x vssver.scc -x powerpc -x sync_file_range.c libc/sysdeps/x86_64/Makefile libc/sysdeps/x86_64/Makefile
--- libc/sysdeps/x86_64/Makefile 2004-08-16 01:46:14.000000000 -0500
+++ libc/sysdeps/x86_64/Makefile 2006-04-14 16:38:16.802950000 -0500
@@ -4,6 +4,9 @@ long-double-fcts = yes
ifeq ($(subdir),csu)
sysdep_routines += hp-timing
elide-routines.os += hp-timing
+
+# get offset to rtld_global._dl_*
+gen-as-const-headers += rtld-global-offsets.sym
endif
ifeq ($(subdir),gmon)
diff -Npruw -x CVS -x vssver.scc -x powerpc -x sync_file_range.c libc/sysdeps/x86_64/memcmp.S libc/sysdeps/x86_64/memcmp.S
--- libc/sysdeps/x86_64/memcmp.S 1969-12-31 18:00:00.000000000 -0600
+++ libc/sysdeps/x86_64/memcmp.S 2006-05-18 14:43:07.611277000 -0500
@@ -0,0 +1,328 @@
+# (c) 2002 Advanced Micro Devices, Inc.
+# YOUR USE OF THIS CODE IS SUBJECT TO THE TERMS
+# AND CONDITIONS OF THE GNU LESSER GENERAL PUBLIC
+# LICENSE FOUND IN THE "README" FILE THAT IS
+# INCLUDED WITH THIS FILE
+
+#include "sysdep.h"
+#if defined PIC && defined SHARED
+# include <rtld-global-offsets.h>
+#endif
+
+#if defined PIC && defined SHARED
+ .globl _rtld_local_ro
+ .hidden _rtld_local_ro
+ .set _rtld_local_ro,_rtld_global_ro
+#endif
+
+ .text
+
+ENTRY (memcmp) # (const void *, const void*, size_t)
+
+L(try1): # up to 8B
+ cmp $8, %rdx
+ jae L(1after)
+
+L(1): # 1-byte
+ test %rdx, %rdx
+ mov $0, %eax
+ jz L(exit)
+
+L(1loop):
+ movzbl (%rdi), %eax
+ movzbl (%rsi), %ecx
+ sub %ecx, %eax
+ jnz L(exit)
+
+ dec %rdx
+
+ lea 1 (%rdi), %rdi
+ lea 1 (%rsi), %rsi
+
+ jnz L(1loop)
+
+L(exit):
+ rep
+ ret
+
+ .p2align 4
+
+L(1after):
+
+L(8try): # up to 32B
+ cmp $32, %rdx
+ jae L(8after)
+
+L(8): # 8-byte
+ mov %edx, %ecx
+ shr $3, %ecx
+ jz L(1)
+
+ .p2align 4
+
+L(8loop):
+ mov (%rsi), %rax
+ cmp (%rdi), %rax
+ jne L(1)
+
+ sub $8, %rdx
+ dec %ecx
+
+ lea 8 (%rsi), %rsi
+ lea 8 (%rdi), %rdi
+
+ jnz L(8loop)
+
+L(8skip):
+ and $7, %edx
+ jnz L(1)
+
+ xor %eax, %eax
+ ret
+
+ .p2align 4
+
+L(8after):
+
+L(32try): # up to 2KB
+ cmp $2048, %rdx
+ ja L(32after)
+
+L(32): # 32-byte
+ mov %edx, %ecx
+ shr $5, %ecx
+ jz L(8)
+
+ .p2align 4
+
+L(32loop):
+ mov (%rsi), %rax
+ mov 8 (%rsi), %r8
+ mov 16 (%rsi), %r9
+ mov 24 (%rsi), %r10
+ sub (%rdi), %rax
+ sub 8 (%rdi), %r8
+ sub 16 (%rdi), %r9
+ sub 24 (%rdi), %r10
+
+ or %rax, %r8
+ or %r9, %r10
+ or %r8, %r10
+ jnz L(8)
+
+ sub $32, %rdx
+ dec %ecx
+
+ lea 32 (%rsi), %rsi
+ lea 32 (%rdi), %rdi
+
+ jnz L(32loop)
+
+L(32skip):
+ and $31, %edx
+ jnz L(8)
+
+ xor %eax, %eax
+ ret
+
+ .p2align 4
+
+L(32after):
+
+L(srctry):
+ mov %esi, %r8d # align by source
+
+ and $7, %r8d
+ jz L(srcafter) # not unaligned
+
+L(src): # align
+ lea -8 (%r8, %rdx), %rdx
+ sub $8, %r8d
+
+# .p2align 4
+
+L(srcloop):
+ movzbl (%rdi), %eax
+ movzbl (%rsi), %ecx
+ sub %ecx, %eax
+ jnz L(exit)
+
+ inc %r8d
+
+ lea 1 (%rdi), %rdi
+ lea 1 (%rsi), %rsi
+
+ jnz L(srcloop)
+
+ .p2align 4
+
+L(srcafter):
+
+L(64try): # up to 1/2 L1
+#ifdef PIC
+# ifdef SHARED
+ mov _rtld_local_ro@GOTPCREL (%rip), %rcx
+ mov RTLD_GLOBAL_DL_CACHE1SIZEHALF (%rcx), %rcx
+# else
+ mov _dl_cache1sizehalf@GOTPCREL (%rip), %rcx
+ mov (%rcx), %rcx
+# endif
+#else
+ mov _dl_cache1sizehalf, %rcx
+#endif
+ cmp %rdx, %rcx
+ cmova %rdx, %rcx
+
+L(64): # 64-byte
+ shr $6, %rcx
+ jz L(32)
+
+ .p2align 4
+
+L(64loop):
+ mov (%rsi), %rax
+ mov 8 (%rsi), %r8
+ sub (%rdi), %rax
+ sub 8 (%rdi), %r8
+ or %r8, %rax
+
+ mov 16 (%rsi), %r9
+ mov 24 (%rsi), %r10
+ sub 16 (%rdi), %r9
+ sub 24 (%rdi), %r10
+ or %r10, %r9
+
+ or %r9, %rax
+ jnz L(32)
+
+ mov 32 (%rsi), %rax
+ mov 40 (%rsi), %r8
+ sub 32 (%rdi), %rax
+ sub 40 (%rdi), %r8
+ or %r8, %rax
+
+ mov 48 (%rsi), %r9
+ mov 56 (%rsi), %r10
+ sub 48 (%rdi), %r9
+ sub 56 (%rdi), %r10
+ or %r10, %r9
+
+ or %r9, %rax
+ jnz L(32)
+
+ lea 64 (%rsi), %rsi
+ lea 64 (%rdi), %rdi
+
+ sub $64, %rdx
+ dec %rcx
+ jnz L(64loop)
+
+# .p2align 4
+
+L(64skip):
+ cmp $2048, %rdx
+ ja L(64after)
+
+ test %edx, %edx
+ jnz L(32)
+
+ xor %eax, %eax
+ ret
+
+ .p2align 4
+
+L(64after):
+
+L(128try):
+
+L(128): # 128-byte
+ mov %rdx, %rcx
+ shr $7, %rcx
+ jz L(128skip)
+
+ .p2align 4
+
+L(128loop):
+ prefetcht0 512 (%rsi)
+ prefetcht0 512 (%rdi)
+
+ mov (%rsi), %rax
+ mov 8 (%rsi), %r8
+ sub (%rdi), %rax
+ sub 8 (%rdi), %r8
+ mov 16 (%rsi), %r9
+ mov 24 (%rsi), %r10
+ sub 16 (%rdi), %r9
+ sub 24 (%rdi), %r10
+
+ or %r8, %rax
+ or %r9, %r10
+ or %r10, %rax
+
+ mov 32 (%rsi), %r8
+ mov 40 (%rsi), %r9
+ sub 32 (%rdi), %r8
+ sub 40 (%rdi), %r9
+ mov 48 (%rsi), %r10
+ mov 56 (%rsi), %r11
+ sub 48 (%rdi), %r10
+ sub 56 (%rdi), %r11
+
+ or %r9, %r8
+ or %r11, %r10
+ or %r10, %r8
+
+ or %r8, %rax
+ jnz L(32)
+
+ prefetcht0 576 (%rsi)
+ prefetcht0 576 (%rdi)
+
+ mov 64 (%rsi), %rax
+ mov 72 (%rsi), %r8
+ sub 64 (%rdi), %rax
+ sub 72 (%rdi), %r8
+ mov 80 (%rsi), %r9
+ mov 88 (%rsi), %r10
+ sub 80 (%rdi), %r9
+ sub 88 (%rdi), %r10
+
+ or %r8, %rax
+ or %r9, %r10
+ or %r10, %rax
+
+ mov 96 (%rsi), %r8
+ mov 104 (%rsi), %r9
+ sub 96 (%rdi), %r8
+ sub 104 (%rdi), %r9
+ mov 112 (%rsi), %r10
+ mov 120 (%rsi), %r11
+ sub 112 (%rdi), %r10
+ sub 120 (%rdi), %r11
+
+ or %r9, %r8
+ or %r11, %r10
+ or %r10, %r8
+
+ or %r8, %rax
+ jnz L(32)
+
+ sub $128, %rdx
+ dec %rcx
+
+ lea 128 (%rsi), %rsi
+ lea 128 (%rdi), %rdi
+
+ jnz L(128loop)
+
+L(128skip):
+ and $127, %edx
+ jnz L(32)
+
+ xor %eax, %eax
+ ret
+
+END (memcmp)
+
+#undef bcmp
+weak_alias (memcmp, bcmp)
diff -Npruw -x CVS -x vssver.scc -x powerpc -x sync_file_range.c libc/sysdeps/x86_64/memcpy.S libc/sysdeps/x86_64/memcpy.S
--- libc/sysdeps/x86_64/memcpy.S 2004-10-17 23:17:08.000000000 -0500
+++ libc/sysdeps/x86_64/memcpy.S 2006-05-18 15:23:45.311446000 -0500
@@ -1,32 +1,22 @@
-/* Highly optimized version for x86-64.
- Copyright (C) 1997, 2000, 2002, 2003, 2004 Free Software Foundation, Inc.
- This file is part of the GNU C Library.
- Based on i586 version contributed by Ulrich Drepper <[email protected]>, 1997.
-
- 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, write to the Free
- Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
- 02111-1307 USA. */
+# (c) 2002 Advanced Micro Devices, Inc.
+# YOUR USE OF THIS CODE IS SUBJECT TO THE TERMS
+# AND CONDITIONS OF THE GNU LESSER GENERAL PUBLIC
+# LICENSE FOUND IN THE "README" FILE THAT IS
+# INCLUDED WITH THIS FILE
#include <sysdep.h>
#include "asm-syntax.h"
#include "bp-sym.h"
#include "bp-asm.h"
+#if defined PIC && defined SHARED
+# include <rtld-global-offsets.h>
+#endif
-/* BEWARE: `#ifdef memcpy' means that memcpy is redefined as `mempcpy',
- and the return value is the byte after the last one copied in
- the destination. */
-#define MEMPCPY_P (defined memcpy)
+#if defined PIC && defined SHARED
+ .globl _rtld_local_ro
+ .hidden _rtld_local_ro
+ .set _rtld_local_ro,_rtld_global_ro
+#endif
.text
#if defined PIC && !defined NOT_IN_libc
@@ -35,67 +25,480 @@ ENTRY (__memcpy_chk)
jb HIDDEN_JUMPTARGET (__chk_fail)
END (__memcpy_chk)
#endif
-ENTRY (BP_SYM (memcpy))
- /* Cutoff for the big loop is a size of 32 bytes since otherwise
- the loop will never be entered. */
- cmpq $32, %rdx
- movq %rdx, %rcx
-#if !MEMPCPY_P
- movq %rdi, %r10 /* Save value. */
+
+ENTRY (memcpy) # (void *, const void*, size_t)
+
+L(1try): # up to 16B
+ cmp $16, %rdx
+#if defined (USE_AS_MEMPCPY)
+ lea (%rdi, %rdx), %rax
+#else
+ mov %rdi, %rax
#endif
+ jae L(1after)
+
+L(1): # 1-byte once
+ test $1, %dl
+ jz L(1a)
+
+ movzbl (%rsi), %ecx
+ mov %cl, (%rdi)
+
+ inc %rsi
+ inc %rdi
+
+L(1a): # 2-byte once
+ test $2, %dl
+ jz L(1b)
+
+ movzwl (%rsi), %ecx
+ mov %cx, (%rdi)
+
+ add $2, %rsi
+ add $2, %rdi
+
+L(1b): # 4-byte once
+ test $4, %dl
+ jz L(1c)
+
+ mov (%rsi), %ecx
+ mov %ecx, (%rdi)
+
+ add $4, %rsi
+ add $4, %rdi
+
+L(1c): # 8-byte once
+ test $8, %dl
+ jz L(exit)
+
+ mov (%rsi), %rcx
+ mov %rcx, (%rdi)
+
+L(exit):
+ rep
+ ret
+
+ .p2align 4
+
+L(1after):
+ push %rax
+
+L(8try): # up to 32B
+ cmp $32, %rdx
+ jae L(8after)
+
+L(8): # 8-byte loop
+ mov %edx, %ecx
+ shr $3, %ecx
+ jz L(8skip)
+
+ .p2align 4
+
+L(8loop):
+ dec %ecx
+
+ mov (%rsi), %rax
+ mov %rax, (%rdi)
+
+ lea 8 (%rsi), %rsi
+ lea 8 (%rdi), %rdi
+
+ jnz L(8loop)
+
+L(8skip):
+ and $7, %edx # check for left overs
+ pop %rax
+ jnz L(1)
+
+ rep
+ ret
+
+ .p2align 4
+
+L(8after):
+
+L(aligntry):
+ mov %edi, %r8d # align by destination
+
+ and $7, %r8d
+ jz L(alignafter) # not unaligned
+
+L(align): # align
+ lea -8 (%r8, %rdx), %rdx
+ sub $8, %r8d
+
+ .p2align 4
+
+L(alignloop):
+ inc %r8d
+
+ mov (%rsi), %al
+ mov %al, (%rdi)
+
+ lea 1 (%rsi), %rsi
+ lea 1 (%rdi), %rdi
+
+ jnz L(alignloop)
+
+ .p2align 4
+
+L(alignafter):
+
+L(32try): # up to 1KB
+ cmp $1024, %rdx
+ ja L(32after)
+
+L(32): # 32-byte loop
+ mov %edx, %ecx
+ shr $5, %ecx
+ jz L(32skip)
+
+ .p2align 4
+
+L(32loop):
+ dec %ecx
+
+ mov (%rsi), %rax
+ mov 8 (%rsi), %r8
+ mov 16 (%rsi), %r9
+ mov 24 (%rsi), %r10
+
+ mov %rax, (%rdi)
+ mov %r8, 8 (%rdi)
+ mov %r9, 16 (%rdi)
+ mov %r10, 24 (%rdi)
+
+ lea 32 (%rsi), %rsi
+ lea 32 (%rdi), %rdi
+
+ jz L(32skip)
- /* We need this in any case. */
- cld
+ dec %ecx
- jbe 1f
+ mov (%rsi), %rax
+ mov 8 (%rsi), %r8
+ mov 16 (%rsi), %r9
+ mov 24 (%rsi), %r10
- /* Align destination. */
- movq %rdi, %rax
- negq %rax
- andq $7, %rax
- subq %rax, %rcx
- xchgq %rax, %rcx
+ mov %rax, (%rdi)
+ mov %r8, 8 (%rdi)
+ mov %r9, 16 (%rdi)
+ mov %r10, 24 (%rdi)
- rep; movsb
+ lea 32 (%rsi), %rsi
+ lea 32 (%rdi), %rdi
- movq %rax, %rcx
- subq $32, %rcx
- js 2f
+ jnz L(32loop)
.p2align 4
-3:
- /* Now correct the loop counter. Please note that in the following
- code the flags are not changed anymore. */
- subq $32, %rcx
+L(32skip):
+ and $31, %edx # check for left overs
+ jnz L(8)
+
+ pop %rax
+ ret
+
+ .p2align 4
+
+L(32after):
+
+L(fasttry): # first 1/2 L1
+#ifdef PIC
+# ifdef SHARED
+ mov _rtld_local_ro@GOTPCREL (%rip), %r11
+ mov RTLD_GLOBAL_DL_CACHE1SIZEHALF (%r11), %r11
+# else
+ mov _dl_cache1sizehalf@GOTPCREL (%rip), %r11
+ mov (%r11), %r11
+# endif
+#else
+ mov _dl_cache1sizehalf, %r11
+#endif
+ cmp %rdx, %r11
+ cmova %rdx, %r11
- movq (%rsi), %rax
- movq 8(%rsi), %rdx
- movq 16(%rsi), %r8
- movq 24(%rsi), %r9
- movq %rax, (%rdi)
- movq %rdx, 8(%rdi)
- movq %r8, 16(%rdi)
- movq %r9, 24(%rdi)
+L(fast): # good ol' MOVS
+ mov %r11, %rcx
+ and $-8, %r11
+ shr $3, %rcx
+ jz L(fastskip)
+
+ rep
+ movsq
+
+L(fastskip):
+ sub %r11, %rdx # check for more
+ test $-8, %rdx
+ jnz L(fastafter)
+
+ and $7, %edx # check for left overs
+ pop %rax
+ jnz L(1)
- leaq 32(%rsi), %rsi
- leaq 32(%rdi), %rdi
+ rep
+ ret
- jns 3b
+ .p2align 4
- /* Correct extra loop counter modification. */
-2: addq $32, %rcx
-1: rep; movsb
+L(fastafter):
-#if MEMPCPY_P
- movq %rdi, %rax /* Set return value. */
+L(pretry): # first 1/2 L2
+#ifdef PIC
+# ifdef SHARED
+ mov _rtld_local_ro@GOTPCREL (%rip), %r8
+ mov RTLD_GLOBAL_DL_CACHE2SIZEHALF (%r8), %r8
#else
- movq %r10, %rax /* Set return value. */
+ mov _dl_cache2sizehalf@GOTPCREL (%rip), %r8
+ mov (%r8), %r8
+# endif
+#else
+ mov _dl_cache2sizehalf, %r8
+#endif
+ cmp %rdx, %r8
+ cmova %rdx, %r8
+L(pre): # 64-byte with prefetching
+ mov %r8, %rcx
+ and $-64, %r8
+ shr $6, %rcx
+ jz L(preskip)
+
+ push %r14
+ push %r13
+ push %r12
+ push %rbx
+
+#ifdef PIC
+# ifdef SHARED
+ mov _rtld_local_ro@GOTPCREL (%rip), %rax
+ cmpl $0, RTLD_GLOBAL_DL_PREFETCHW (%rax)
+# else
+ mov _dl_prefetchw@GOTPCREL (%rip), %rax
+ cmpl $0, (%rax)
+# endif
+#else
+ cmpl $0, _dl_prefetchw
#endif
+ jz L(preloop)
+
+ .p2align 4
+
+L(prewloop): # to state M
+ dec %rcx
+
+ mov (%rsi), %rax
+ mov 8 (%rsi), %rbx
+ mov 16 (%rsi), %r9
+ mov 24 (%rsi), %r10
+ mov 32 (%rsi), %r11
+ mov 40 (%rsi), %r12
+ mov 48 (%rsi), %r13
+ mov 56 (%rsi), %r14
+
+ prefetcht0 0 + 896 (%rsi)
+ prefetcht0 64 + 896 (%rsi)
+
+ mov %rax, (%rdi)
+ mov %rbx, 8 (%rdi)
+ mov %r9, 16 (%rdi)
+ mov %r10, 24 (%rdi)
+ mov %r11, 32 (%rdi)
+ mov %r12, 40 (%rdi)
+ mov %r13, 48 (%rdi)
+ mov %r14, 56 (%rdi)
+
+ lea 64 (%rsi), %rsi
+ lea 64 (%rdi), %rdi
+
+ jz L(prebail)
+
+ dec %rcx
+
+ mov (%rsi), %rax
+ mov 8 (%rsi), %rbx
+ mov 16 (%rsi), %r9
+ mov 24 (%rsi), %r10
+ mov 32 (%rsi), %r11
+ mov 40 (%rsi), %r12
+ mov 48 (%rsi), %r13
+ mov 56 (%rsi), %r14
+
+ mov %rax, (%rdi)
+ mov %rbx, 8 (%rdi)
+ mov %r9, 16 (%rdi)
+ mov %r10, 24 (%rdi)
+ mov %r11, 32 (%rdi)
+ mov %r12, 40 (%rdi)
+ mov %r13, 48 (%rdi)
+ mov %r14, 56 (%rdi)
+
+ prefetchw 896 - 64 (%rdi)
+ prefetchw 896 - 0 (%rdi)
+
+ lea 64 (%rsi), %rsi
+ lea 64 (%rdi), %rdi
+
+ jnz L(prewloop)
+ jmp L(prebail)
+
+ .p2align 4
+
+L(preloop): # to state E
+ dec %rcx
+
+ mov (%rsi), %rax
+ mov 8 (%rsi), %rbx
+ mov 16 (%rsi), %r9
+ mov 24 (%rsi), %r10
+ mov 32 (%rsi), %r11
+ mov 40 (%rsi), %r12
+ mov 48 (%rsi), %r13
+ mov 56 (%rsi), %r14
+
+ prefetcht0 896 + 0 (%rsi)
+ prefetcht0 896 + 64 (%rsi)
+
+ mov %rax, (%rdi)
+ mov %rbx, 8 (%rdi)
+ mov %r9, 16 (%rdi)
+ mov %r10, 24 (%rdi)
+ mov %r11, 32 (%rdi)
+ mov %r12, 40 (%rdi)
+ mov %r13, 48 (%rdi)
+ mov %r14, 56 (%rdi)
+
+ lea 64 (%rsi), %rsi
+ lea 64 (%rdi), %rdi
+
+ jz L(prebail)
+
+ dec %rcx
+
+ mov (%rsi), %rax
+ mov 8 (%rsi), %rbx
+ mov 16 (%rsi), %r9
+ mov 24 (%rsi), %r10
+ mov 32 (%rsi), %r11
+ mov 40 (%rsi), %r12
+ mov 48 (%rsi), %r13
+ mov 56 (%rsi), %r14
+
+ prefetcht0 896 - 64 (%rdi)
+ prefetcht0 896 - 0 (%rdi)
+
+ mov %rax, (%rdi)
+ mov %rbx, 8 (%rdi)
+ mov %r9, 16 (%rdi)
+ mov %r10, 24 (%rdi)
+ mov %r11, 32 (%rdi)
+ mov %r12, 40 (%rdi)
+ mov %r13, 48 (%rdi)
+ mov %r14, 56 (%rdi)
+
+ lea 64 (%rsi), %rsi
+ lea 64 (%rdi), %rdi
+
+ jnz L(preloop)
+
+L(prebail):
+ pop %rbx
+ pop %r12
+ pop %r13
+ pop %r14
+
+# .p2align 4
+
+L(preskip):
+ sub %r8, %rdx # check for more
+ test $-64, %rdx
+ jnz L(preafter)
+
+ and $63, %edx # check for left overs
+ jnz L(32)
+
+ pop %rax
+ ret
+
+ .p2align 4
+
+L(preafter):
+
+L(NTtry):
+
+L(NT): # NT 128-byte
+ mov %rdx, %rcx
+ shr $7, %rcx
+ jz L(NTskip)
+
+ push %r14
+ push %r13
+ push %r12
+
+ .p2align 4
+
+L(NTloop):
+ prefetchnta 768 (%rsi)
+ prefetchnta 832 (%rsi)
+
+ dec %rcx
+
+ mov (%rsi), %rax
+ mov 8 (%rsi), %r8
+ mov 16 (%rsi), %r9
+ mov 24 (%rsi), %r10
+ mov 32 (%rsi), %r11
+ mov 40 (%rsi), %r12
+ mov 48 (%rsi), %r13
+ mov 56 (%rsi), %r14
+
+ movnti %rax, (%rdi)
+ movnti %r8, 8 (%rdi)
+ movnti %r9, 16 (%rdi)
+ movnti %r10, 24 (%rdi)
+ movnti %r11, 32 (%rdi)
+ movnti %r12, 40 (%rdi)
+ movnti %r13, 48 (%rdi)
+ movnti %r14, 56 (%rdi)
+
+ mov 64 (%rsi), %rax
+ mov 72 (%rsi), %r8
+ mov 80 (%rsi), %r9
+ mov 88 (%rsi), %r10
+ mov 96 (%rsi), %r11
+ mov 104 (%rsi), %r12
+ mov 112 (%rsi), %r13
+ mov 120 (%rsi), %r14
+
+ movnti %rax, 64 (%rdi)
+ movnti %r8, 72 (%rdi)
+ movnti %r9, 80 (%rdi)
+ movnti %r10, 88 (%rdi)
+ movnti %r11, 96 (%rdi)
+ movnti %r12, 104 (%rdi)
+ movnti %r13, 112 (%rdi)
+ movnti %r14, 120 (%rdi)
+
+ lea 128 (%rsi), %rsi
+ lea 128 (%rdi), %rdi
+
+ jnz L(NTloop)
+
+ mfence # serialize memory operations
+
+ pop %r12
+ pop %r13
+ pop %r14
+
+L(NTskip):
+ and $127, %edx # check for left overs
+ jnz L(32)
+
+ pop %rax
ret
-END (BP_SYM (memcpy))
-#if !MEMPCPY_P
+END (memcpy)
+
+#ifndef USE_AS_MEMPCPY
libc_hidden_builtin_def (memcpy)
#endif
diff -Npruw -x CVS -x vssver.scc -x powerpc -x sync_file_range.c libc/sysdeps/x86_64/mempcpy.S libc/sysdeps/x86_64/mempcpy.S
--- libc/sysdeps/x86_64/mempcpy.S 2004-10-17 23:17:08.000000000 -0500
+++ libc/sysdeps/x86_64/mempcpy.S 2006-05-05 15:24:18.279191000 -0500
@@ -1,3 +1,4 @@
+#define USE_AS_MEMPCPY
#define memcpy __mempcpy
#define __memcpy_chk __mempcpy_chk
#include <sysdeps/x86_64/memcpy.S>
diff -Npruw -x CVS -x vssver.scc -x powerpc -x sync_file_range.c libc/sysdeps/x86_64/memset.S libc/sysdeps/x86_64/memset.S
--- libc/sysdeps/x86_64/memset.S 2005-03-31 04:00:13.000000000 -0600
+++ libc/sysdeps/x86_64/memset.S 2006-05-15 11:38:13.737756000 -0500
@@ -1,145 +1,322 @@
-/* memset/bzero -- set memory area to CH/0
- Optimized version for x86-64.
- Copyright (C) 2002, 2003, 2004, 2005 Free Software Foundation, Inc.
- This file is part of the GNU C Library.
- Contributed by Andreas Jaeger <[email protected]>.
-
- 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, write to the Free
- Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
- 02111-1307 USA. */
+# (c) 2002 Advanced Micro Devices, Inc.
+# YOUR USE OF THIS CODE IS SUBJECT TO THE TERMS
+# AND CONDITIONS OF THE GNU LESSER GENERAL PUBLIC
+# LICENSE FOUND IN THE "README" FILE THAT IS
+# INCLUDED WITH THIS FILE
#include <sysdep.h>
#include "asm-syntax.h"
#include "bp-sym.h"
#include "bp-asm.h"
+#if defined PIC && defined SHARED
+# include <rtld-global-offsets.h>
+#endif
-/* BEWARE: `#ifdef memset' means that memset is redefined as `bzero' */
-#define BZERO_P (defined memset)
-
-/* This is somehow experimental and could made dependend on the cache
- size. */
-#define LARGE $120000
+#if defined PIC && defined SHARED
+ .globl _rtld_local_ro
+ .hidden _rtld_local_ro
+ .set _rtld_local_ro,_rtld_global_ro
+#endif
.text
-#if !BZERO_P && defined PIC && !defined NOT_IN_libc
+#if !defined USE_AS_BZERO && defined PIC && !defined NOT_IN_libc
ENTRY (__memset_chk)
cmpq %rdx, %rcx
jb HIDDEN_JUMPTARGET (__chk_fail)
END (__memset_chk)
#endif
-ENTRY (memset)
-#if BZERO_P
- mov %rsi,%rdx /* Adjust parameter. */
- xorl %esi,%esi /* Fill with 0s. */
-#endif
- cmp $0x7,%rdx /* Check for small length. */
- mov %rdi,%rcx /* Save ptr as return value. */
- jbe 7f
-#if BZERO_P
- mov %rsi,%r8 /* Just copy 0. */
+ENTRY (memset) # (void *, const void*, size_t)
+
+#ifdef USE_AS_BZERO
+ mov %rsi, %rdx # memset doubles as bzero
+ xorl %esi, %esi
+#else
+ mov $0x0101010101010101, %rcx # memset is itself
+ movzx %sil, %rsi
+ imul %rcx, %rsi # replicate 8 times
+#endif
+
+L(try1): # up to 64B
+ cmp $64, %rdx
+ mov %rdi, %rax # return memory block address (even for bzero ())
+ jae L(1after)
+
+L(1): # 1-byte loop
+ test $1, %dl
+ jz L(1a)
+
+ mov %sil, (%rdi)
+ inc %rdi
+
+L(1a):
+ test $2, %dl
+ jz L(1b)
+
+ mov %si, (%rdi)
+ add $2, %rdi
+
+L(1b):
+ test $4, %dl
+ jz L(1c)
+
+ mov %esi, (%rdi)
+ add $4, %rdi
+
+L(1c):
+ test $8, %dl
+ jz L(1d)
+
+ mov %rsi, (%rdi)
+ add $8, %rdi
+
+L(1d):
+ test $16, %dl
+ jz L(1e)
+
+ mov %rsi, (%rdi)
+ mov %rsi, 8 (%rdi)
+ add $16, %rdi
+
+L(1e):
+ test $32, %dl
+ jz L(1f)
+
+ mov %rsi, (%rdi)
+ mov %rsi, 8 (%rdi)
+ mov %rsi, 16 (%rdi)
+ mov %rsi, 24 (%rdi)
+# add $32, %rdi
+
+L(1f):
+
+L(exit):
+ rep
+ ret
+
+ .p2align 4
+
+L(1after):
+
+L(32try): # up to 512B
+ cmp $512, %rdx
+ ja L(32after)
+
+L(32): # 32-byte loop
+ mov %edx, %ecx
+ shr $5, %ecx
+ jz L(32skip)
+
+ .p2align 4
+
+L(32loop):
+ dec %ecx
+
+ mov %rsi, (%rdi)
+ mov %rsi, 8 (%rdi)
+ mov %rsi, 16 (%rdi)
+ mov %rsi, 24 (%rdi)
+
+ lea 32 (%rdi), %rdi
+
+ jz L(32skip)
+
+ dec %ecx
+
+ mov %rsi, (%rdi)
+ mov %rsi, 8 (%rdi)
+ mov %rsi, 16 (%rdi)
+ mov %rsi, 24 (%rdi)
+
+ lea 32 (%rdi), %rdi
+
+ jnz L(32loop)
+
+ .p2align 4
+
+L(32skip):
+ and $31, %edx # check for left overs
+ jnz L(1)
+
+ rep
+ ret
+
+ .p2align 4
+
+L(32after):
+
+L(aligntry):
+ mov %edi, %ecx # align by destination
+
+ and $7, %ecx # skip if already aligned
+ jz L(alignafter)
+
+L(align): # align loop
+ lea -8 (%rcx, %rdx), %rdx
+ sub $8, %ecx
+
+ .p2align 4
+
+L(alignloop):
+ inc %ecx
+
+ mov %sil, (%rdi)
+ lea 1 (%rdi), %rdi
+
+ jnz L(alignloop)
+
+ .p2align 4
+
+L(alignafter):
+
+# For MP System half cache size is better,
+# for UP full cache size is better.
+# Use half cache size only.
+L(fasttry): # between 2KB and 1/2 L2
+#ifdef PIC
+# ifdef SHARED
+ mov _rtld_local_ro@GOTPCREL (%rip), %r8
+ mov RTLD_GLOBAL_DL_CACHE2SIZEHALF (%r8), %r8
#else
- /* Populate 8 bit data to full 64-bit. */
- movabs $0x0101010101010101,%r8
- movzbl %sil,%eax
- imul %rax,%r8
-#endif
- test $0x7,%edi /* Check for alignment. */
- je 2f
-
- .p2align 4
-1: /* Align ptr to 8 byte. */
- mov %sil,(%rcx)
- dec %rdx
- inc %rcx
- test $0x7,%ecx
- jne 1b
-
-2: /* Check for really large regions. */
- mov %rdx,%rax
- shr $0x6,%rax
- je 4f
- cmp LARGE, %rdx
- jae 11f
-
- .p2align 4
-3: /* Copy 64 bytes. */
- mov %r8,(%rcx)
- mov %r8,0x8(%rcx)
- mov %r8,0x10(%rcx)
- mov %r8,0x18(%rcx)
- mov %r8,0x20(%rcx)
- mov %r8,0x28(%rcx)
- mov %r8,0x30(%rcx)
- mov %r8,0x38(%rcx)
- add $0x40,%rcx
- dec %rax
- jne 3b
-
-4: /* Copy final bytes. */
- and $0x3f,%edx
- mov %rdx,%rax
- shr $0x3,%rax
- je 6f
-
-5: /* First in chunks of 8 bytes. */
- mov %r8,(%rcx)
- add $0x8,%rcx
- dec %rax
- jne 5b
-6:
- and $0x7,%edx
-7:
- test %rdx,%rdx
- je 9f
-8: /* And finally as bytes (up to 7). */
- mov %sil,(%rcx)
- inc %rcx
- dec %rdx
- jne 8b
-9:
-#if BZERO_P
- nop
+ mov _dl_cache2sizehalf@GOTPCREL (%rip), %r8
+ mov (%r8), %r8
+# endif
#else
- /* Load result (only if used as memset). */
- mov %rdi,%rax /* start address of destination is result */
+ mov _dl_cache2sizehalf, %r8
#endif
- retq
+ cmp %rdx, %r8
+ cmova %rdx, %r8
+
+ cmp $2048, %rdx # this is slow for some block sizes
+ jb L(64)
+
+L(fast): # microcode loop
+ mov %r8, %rcx
+ and $-8, %r8
+ shr $3, %rcx
+
+ xchg %rax, %rsi
+
+ rep
+ stosq
+
+ xchg %rax, %rsi
+
+L(fastskip):
+ sub %r8, %rdx # check for more
+ ja L(64after)
+
+ and $7, %edx # check for left overs
+ jnz L(1)
+
+ rep
+ ret
.p2align 4
-11: /* Copy 64 bytes without polluting the cache. */
- /* We could use movntdq %xmm0,(%rcx) here to further
- speed up for large cases but let's not use XMM registers. */
- movnti %r8,(%rcx)
- movnti %r8,0x8(%rcx)
- movnti %r8,0x10(%rcx)
- movnti %r8,0x18(%rcx)
- movnti %r8,0x20(%rcx)
- movnti %r8,0x28(%rcx)
- movnti %r8,0x30(%rcx)
- movnti %r8,0x38(%rcx)
- add $0x40,%rcx
- dec %rax
- jne 11b
- jmp 4b
+
+L(fastafter):
+
+L(64try): # up to 2KB
+
+L(64): # 64-byte loop
+ mov %r8, %rcx
+ and $-64, %r8
+ shr $6, %rcx
+
+ dec %rcx # this iteration starts the prefetcher sooner
+
+ mov %rsi, (%rdi)
+ mov %rsi, 8 (%rdi)
+ mov %rsi, 16 (%rdi)
+ mov %rsi, 24 (%rdi)
+ mov %rsi, 32 (%rdi)
+ mov %rsi, 40 (%rdi)
+ mov %rsi, 48 (%rdi)
+ mov %rsi, 56 (%rdi)
+
+ lea 64 (%rdi), %rdi
+
+ .p2align 4
+
+L(64loop):
+ dec %rcx
+
+ mov %rsi, (%rdi)
+ mov %rsi, 8 (%rdi)
+ mov %rsi, 16 (%rdi)
+ mov %rsi, 24 (%rdi)
+ mov %rsi, 32 (%rdi)
+ mov %rsi, 40 (%rdi)
+ mov %rsi, 48 (%rdi)
+ mov %rsi, 56 (%rdi)
+
+ lea 64 (%rdi), %rdi
+
+ jnz L(64loop)
+
+L(64skip):
+ sub %r8, %rdx # check for more
+ ja L(64after)
+
+ and $63, %edx # check for left overs
+ jnz L(32)
+
+ rep
+ ret
+
+ .p2align 4
+
+L(64after):
+
+L(NTtry):
+
+L(NT): # 128-byte NT loop
+ mov %rdx, %rcx
+ shr $7, %rcx
+ jz L(NTskip)
+
+ .p2align 4
+
+L(NTloop): # on an MP system it would be better to prefetchnta 320 (%rdi) and 384 (%rdi) here, but not so on an 1P system
+ dec %rcx
+
+ movnti %rsi, (%rdi)
+ movnti %rsi, 8 (%rdi)
+ movnti %rsi, 16 (%rdi)
+ movnti %rsi, 24 (%rdi)
+ movnti %rsi, 32 (%rdi)
+ movnti %rsi, 40 (%rdi)
+ movnti %rsi, 48 (%rdi)
+ movnti %rsi, 56 (%rdi)
+ movnti %rsi, 64 (%rdi)
+ movnti %rsi, 72 (%rdi)
+ movnti %rsi, 80 (%rdi)
+ movnti %rsi, 88 (%rdi)
+ movnti %rsi, 96 (%rdi)
+ movnti %rsi, 104 (%rdi)
+ movnti %rsi, 112 (%rdi)
+ movnti %rsi, 120 (%rdi)
+
+ lea 128 (%rdi), %rdi
+
+ jnz L(NTloop)
+
+ mfence # serialize memory operations
+
+L(NTskip):
+ and $127, %edx # check for left overs
+ jnz L(32)
+
+ rep
+ ret
END (memset)
-#if !BZERO_P
+
+#ifndef USE_AS_BZERO
libc_hidden_builtin_def (memset)
#endif
-#if !BZERO_P && defined PIC && !defined NOT_IN_libc
+#if !defined USE_AS_BZERO && defined PIC && !defined NOT_IN_libc
strong_alias (__memset_chk, __memset_zero_constant_len_parameter)
.section .gnu.warning.__memset_zero_constant_len_parameter
.string "memset used with constant zero length parameter; this could be due to transposed parameters"
diff -Npruw -x CVS -x vssver.scc -x powerpc -x sync_file_range.c libc/sysdeps/x86_64/stpcpy.S libc/sysdeps/x86_64/stpcpy.S
--- libc/sysdeps/x86_64/stpcpy.S 2004-05-28 01:39:37.000000000 -0500
+++ libc/sysdeps/x86_64/stpcpy.S 2006-05-05 15:24:41.775991000 -0500
@@ -1,5 +1,5 @@
#define USE_AS_STPCPY
-#define STRCPY __stpcpy
+#define strcpy __stpcpy
#include <sysdeps/x86_64/strcpy.S>
diff -Npruw -x CVS -x vssver.scc -x powerpc -x sync_file_range.c libc/sysdeps/x86_64/stpncpy.S libc/sysdeps/x86_64/stpncpy.S
--- libc/sysdeps/x86_64/stpncpy.S 1969-12-31 18:00:00.000000000 -0600
+++ libc/sysdeps/x86_64/stpncpy.S 2006-05-05 15:24:50.748541000 -0500
@@ -0,0 +1,9 @@
+#define USE_AS_STRNCPY
+#define USE_AS_STPCPY
+#define strcpy __stpncpy
+
+#include <sysdeps/x86_64/strcpy.S>
+
+weak_alias (__stpncpy, stpncpy)
+libc_hidden_def (__stpncpy)
+libc_hidden_builtin_def (stpncpy)
diff -Npruw -x CVS -x vssver.scc -x powerpc -x sync_file_range.c libc/sysdeps/x86_64/strcpy.S libc/sysdeps/x86_64/strcpy.S
--- libc/sysdeps/x86_64/strcpy.S 2003-04-29 17:47:18.000000000 -0500
+++ libc/sysdeps/x86_64/strcpy.S 2006-05-19 13:41:31.281326000 -0500
@@ -1,159 +1,1141 @@
-/* strcpy/stpcpy implementation for x86-64.
- Copyright (C) 2002 Free Software Foundation, Inc.
- This file is part of the GNU C Library.
- Contributed by Andreas Jaeger <[email protected]>, 2002.
-
- 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, write to the Free
- Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
- 02111-1307 USA. */
-
-#include <sysdep.h>
-#include "asm-syntax.h"
-#include "bp-sym.h"
-#include "bp-asm.h"
+# (c) 2002 Advanced Micro Devices, Inc.
+# YOUR USE OF THIS CODE IS SUBJECT TO THE TERMS
+# AND CONDITIONS OF THE GNU LESSER GENERAL PUBLIC
+# LICENSE FOUND IN THE "README" FILE THAT IS
+# INCLUDED WITH THIS FILE
+
+#include "sysdep.h"
+#if defined PIC && defined SHARED
+# include <rtld-global-offsets.h>
+#endif
-#ifndef USE_AS_STPCPY
-# define STRCPY strcpy
+#if defined PIC && defined SHARED
+ .globl _rtld_local_ro
+ .hidden _rtld_local_ro
+ .set _rtld_local_ro,_rtld_global_ro
#endif
.text
-ENTRY (BP_SYM (STRCPY))
- movq %rsi, %rcx /* Source register. */
- andl $7, %ecx /* mask alignment bits */
- movq %rdi, %rdx /* Duplicate destination pointer. */
-
- jz 5f /* aligned => start loop */
-
- neg %ecx /* We need to align to 8 bytes. */
- addl $8,%ecx
- /* Search the first bytes directly. */
-0:
- movb (%rsi), %al /* Fetch a byte */
- testb %al, %al /* Is it NUL? */
- movb %al, (%rdx) /* Store it */
- jz 4f /* If it was NUL, done! */
- incq %rsi
- incq %rdx
- decl %ecx
- jnz 0b
-
-5:
- movq $0xfefefefefefefeff,%r8
-
- /* Now the sources is aligned. Unfortunatly we cannot force
- to have both source and destination aligned, so ignore the
- alignment of the destination. */
+
+ENTRY (strcpy) # (char *, const char *)
+
+#ifdef USE_AS_STRNCPY // (char *, const char *, size_t)
+ test %rdx, %rdx
+ mov %rdx, %r11
+ jz L(exit) # early exit
+#endif
+
+ xor %edx, %edx
+
+L(aligntry): # between 0 and 7 bytes
+ mov %rsi, %r8 # align by source
+ and $7, %r8
+ jz L(alignafter)
+
+L(align): # 8-byte align
+ sub $8, %r8
+
.p2align 4
-1:
- /* 1st unroll. */
- movq (%rsi), %rax /* Read double word (8 bytes). */
- addq $8, %rsi /* Adjust pointer for next word. */
- movq %rax, %r9 /* Save a copy for NUL finding. */
- addq %r8, %r9 /* add the magic value to the word. We get
- carry bits reported for each byte which
- is *not* 0 */
- jnc 3f /* highest byte is NUL => return pointer */
- xorq %rax, %r9 /* (word+magic)^word */
- orq %r8, %r9 /* set all non-carry bits */
- incq %r9 /* add 1: if one carry bit was *not* set
- the addition will not result in 0. */
-
- jnz 3f /* found NUL => return pointer */
-
- movq %rax, (%rdx) /* Write value to destination. */
- addq $8, %rdx /* Adjust pointer. */
-
- /* 2nd unroll. */
- movq (%rsi), %rax /* Read double word (8 bytes). */
- addq $8, %rsi /* Adjust pointer for next word. */
- movq %rax, %r9 /* Save a copy for NUL finding. */
- addq %r8, %r9 /* add the magic value to the word. We get
- carry bits reported for each byte which
- is *not* 0 */
- jnc 3f /* highest byte is NUL => return pointer */
- xorq %rax, %r9 /* (word+magic)^word */
- orq %r8, %r9 /* set all non-carry bits */
- incq %r9 /* add 1: if one carry bit was *not* set
- the addition will not result in 0. */
-
- jnz 3f /* found NUL => return pointer */
-
- movq %rax, (%rdx) /* Write value to destination. */
- addq $8, %rdx /* Adjust pointer. */
-
- /* 3rd unroll. */
- movq (%rsi), %rax /* Read double word (8 bytes). */
- addq $8, %rsi /* Adjust pointer for next word. */
- movq %rax, %r9 /* Save a copy for NUL finding. */
- addq %r8, %r9 /* add the magic value to the word. We get
- carry bits reported for each byte which
- is *not* 0 */
- jnc 3f /* highest byte is NUL => return pointer */
- xorq %rax, %r9 /* (word+magic)^word */
- orq %r8, %r9 /* set all non-carry bits */
- incq %r9 /* add 1: if one carry bit was *not* set
- the addition will not result in 0. */
-
- jnz 3f /* found NUL => return pointer */
-
- movq %rax, (%rdx) /* Write value to destination. */
- addq $8, %rdx /* Adjust pointer. */
-
- /* 4th unroll. */
- movq (%rsi), %rax /* Read double word (8 bytes). */
- addq $8, %rsi /* Adjust pointer for next word. */
- movq %rax, %r9 /* Save a copy for NUL finding. */
- addq %r8, %r9 /* add the magic value to the word. We get
- carry bits reported for each byte which
- is *not* 0 */
- jnc 3f /* highest byte is NUL => return pointer */
- xorq %rax, %r9 /* (word+magic)^word */
- orq %r8, %r9 /* set all non-carry bits */
- incq %r9 /* add 1: if one carry bit was *not* set
- the addition will not result in 0. */
-
- jnz 3f /* found NUL => return pointer */
-
- movq %rax, (%rdx) /* Write value to destination. */
- addq $8, %rdx /* Adjust pointer. */
- jmp 1b /* Next iteration. */
- /* Do the last few bytes. %rax contains the value to write.
- The loop is unrolled twice. */
+L(alignloop):
+ movzbl (%rsi, %rdx), %eax
+ test %al, %al # check if character a NUL
+ mov %al, (%rdi, %rdx)
+ jz L(exit)
+
+ inc %edx
+
+#ifdef USE_AS_STRNCPY
+ dec %r11
+ jz L(exit)
+#endif
+
+ inc %r8
+ jnz L(alignloop)
+
+ .p2align 4,, 7
+
+L(alignafter):
+
+L(8try): # up to 64 bytes
+ mov $0xfefefefefefefeff, %rcx
+
+L(8): # 8-byte loop
+
+L(8loop):
+#ifdef USE_AS_STRNCPY
+ sub $8, %r11
+ jbe L(tail)
+#endif
+
+ mov (%rsi, %rdx), %rax
+
+ mov %rcx, %r8
+ add %rax, %r8
+ jnc L(tail) # sbb %r10, %r10
+
+ xor %rax, %r8
+ or %rcx, %r8
+ inc %r8 # sub %r10, %r8
+ jnz L(tail)
+
+ mov %rax, (%rdi, %rdx)
+
+#ifdef USE_AS_STRNCPY
+ add $8, %edx
+
+ sub $8, %r11
+ jbe L(tail)
+
+ mov (%rsi, %rdx), %rax
+#else
+ mov 8 (%rsi, %rdx), %rax
+ add $8, %edx
+#endif
+
+ mov %rcx, %r8
+ add %rax, %r8
+ jnc L(tail) # sbb %r10, %r10
+
+ xor %rax, %r8
+ or %rcx, %r8
+ inc %r8 # sub %r10, %r8
+ jnz L(tail)
+
+ mov %rax, (%rdi, %rdx)
+
+#ifdef USE_AS_STRNCPY
+ add $8, %edx
+
+ sub $8, %r11
+ jbe L(tail)
+
+ mov (%rsi, %rdx), %rax
+#else
+ mov 8 (%rsi, %rdx), %rax
+ add $8, %edx
+#endif
+
+ mov %rcx, %r8
+ add %rax, %r8
+ jnc L(tail) # sbb %r10, %r10
+
+ xor %rax, %r8
+ or %rcx, %r8
+ inc %r8 # sub %r10, %r8
+ jnz L(tail)
+
+ mov %rax, (%rdi, %rdx)
+
+#ifdef USE_AS_STRNCPY
+ add $8, %edx
+
+ sub $8, %r11
+ jbe L(tail)
+
+ mov (%rsi, %rdx), %rax
+#else
+ mov 8 (%rsi, %rdx), %rax
+ add $8, %edx
+#endif
+
+ mov %rcx, %r8
+ add %rax, %r8
+ jnc L(tail) # sbb %r10, %r10
+
+ xor %rax, %r8
+ or %rcx, %r8
+ inc %r8 # sub %r10, %r8
+ jnz L(tail)
+
+ mov %rax, (%rdi, %rdx)
+
+#ifdef USE_AS_STRNCPY
+ add $8, %edx
+
+ sub $8, %r11
+ jbe L(tail)
+
+ mov (%rsi, %rdx), %rax
+#else
+ mov 8 (%rsi, %rdx), %rax
+ add $8, %edx
+#endif
+
+ mov %rcx, %r8
+ add %rax, %r8
+ jnc L(tail) # sbb %r10, %r10
+
+ xor %rax, %r8
+ or %rcx, %r8
+ inc %r8 # sub %r10, %r8
+ jnz L(tail)
+
+ mov %rax, (%rdi, %rdx)
+
+#ifdef USE_AS_STRNCPY
+ add $8, %edx
+
+ sub $8, %r11
+ jbe L(tail)
+
+ mov (%rsi, %rdx), %rax
+#else
+ mov 8 (%rsi, %rdx), %rax
+ add $8, %edx
+#endif
+
+ mov %rcx, %r8
+ add %rax, %r8
+ jnc L(tail) # sbb %r10, %r10
+
+ xor %rax, %r8
+ or %rcx, %r8
+ inc %r8 # sub %r10, %r8
+ jnz L(tail)
+
+ mov %rax, (%rdi, %rdx)
+
+#ifdef USE_AS_STRNCPY
+ add $8, %edx
+
+ sub $8, %r11
+ jbe L(tail)
+
+ mov (%rsi, %rdx), %rax
+#else
+ mov 8 (%rsi, %rdx), %rax
+ add $8, %edx
+#endif
+
+ mov %rcx, %r8
+ add %rax, %r8
+ jnc L(tail) # sbb %r10, %r10
+
+ xor %rax, %r8
+ or %rcx, %r8
+ inc %r8 # sub %r10, %r8
+ jnz L(tail)
+
+ mov %rax, (%rdi, %rdx)
+
+#ifdef USE_AS_STRNCPY
+ add $8, %edx
+
+ sub $8, %r11
+ jbe L(tail)
+
+ mov (%rsi, %rdx), %rax
+#else
+ mov 8 (%rsi, %rdx), %rax
+ add $8, %edx
+#endif
+
+ mov %rcx, %r8
+ add %rax, %r8
+ jnc L(tail) # sbb %r10, %r10
+
+ xor %rax, %r8
+ or %rcx, %r8
+ inc %r8 # sub %r10, %r8
+ jnz L(tail)
+
+ mov %rax, (%rdi, %rdx)
+
+ add $8, %edx
+
+L(8after): # up to 64 bytes
+
+L(64try): # up to 1/2 L1
+#ifdef PIC
+# ifdef SHARED
+ mov _rtld_local_ro@GOTPCREL (%rip), %r9
+ mov RTLD_GLOBAL_DL_CACHE1SIZEHALF (%r9), %r9
+# else
+ mov _dl_cache1sizehalf@GOTPCREL (%rip), %r9
+ mov (%r9), %r9
+# endif
+#else
+ mov _dl_cache1sizehalf, %r9
+#endif
+
+L(64): # 64-byte loop
+
.p2align 4
-3:
- /* Note that stpcpy needs to return with the value of the NUL
- byte. */
- movb %al, (%rdx) /* 1st byte. */
- testb %al, %al /* Is it NUL. */
- jz 4f /* yes, finish. */
- incq %rdx /* Increment destination. */
- movb %ah, (%rdx) /* 2nd byte. */
- testb %ah, %ah /* Is it NUL?. */
- jz 4f /* yes, finish. */
- incq %rdx /* Increment destination. */
- shrq $16, %rax /* Shift... */
- jmp 3b /* and look at next two bytes in %rax. */
-4:
+L(64loop):
+#ifdef USE_AS_STRNCPY
+ sub $8, %r11
+ jbe L(tail)
+#endif
+
+ mov (%rsi, %rdx), %rax
+
+ mov %rcx, %r8
+ add %rax, %r8
+ sbb %r10, %r10
+
+ xor %rax, %r8
+ or %rcx, %r8
+ sub %r10, %r8
+ jnz L(tail)
+
+ mov %rax, (%rdi, %rdx)
+
+#ifdef USE_AS_STRNCPY
+ add $8, %edx
+
+ sub $8, %r11
+ jbe L(tail)
+
+ mov (%rsi, %rdx), %rax
+#else
+ mov 8 (%rsi, %rdx), %rax
+ add $8, %edx
+#endif
+
+ mov %rcx, %r8
+ add %rax, %r8
+ sbb %r10, %r10
+
+ xor %rax, %r8
+ or %rcx, %r8
+ sub %r10, %r8
+ jnz L(tail)
+
+ mov %rax, (%rdi, %rdx)
+
+#ifdef USE_AS_STRNCPY
+ add $8, %edx
+
+ sub $8, %r11
+ jbe L(tail)
+
+ mov (%rsi, %rdx), %rax
+#else
+ mov 8 (%rsi, %rdx), %rax
+ add $8, %edx
+#endif
+
+ mov %rcx, %r8
+ add %rax, %r8
+ sbb %r10, %r10
+
+ xor %rax, %r8
+ or %rcx, %r8
+ sub %r10, %r8
+ jnz L(tail)
+
+ mov %rax, (%rdi, %rdx)
+
+#ifdef USE_AS_STRNCPY
+ add $8, %edx
+
+ sub $8, %r11
+ jbe L(tail)
+
+ mov (%rsi, %rdx), %rax
+#else
+ mov 8 (%rsi, %rdx), %rax
+ add $8, %edx
+#endif
+
+ mov %rcx, %r8
+ add %rax, %r8
+ sbb %r10, %r10
+
+ xor %rax, %r8
+ or %rcx, %r8
+ sub %r10, %r8
+ jnz L(tail)
+
+ mov %rax, (%rdi, %rdx)
+
+#ifdef USE_AS_STRNCPY
+ add $8, %edx
+
+ sub $8, %r11
+ jbe L(tail)
+
+ mov (%rsi, %rdx), %rax
+#else
+ mov 8 (%rsi, %rdx), %rax
+ add $8, %edx
+#endif
+
+ mov %rcx, %r8
+ add %rax, %r8
+ sbb %r10, %r10
+
+ xor %rax, %r8
+ or %rcx, %r8
+ sub %r10, %r8
+ jnz L(tail)
+
+ mov %rax, (%rdi, %rdx)
+
+#ifdef USE_AS_STRNCPY
+ add $8, %edx
+
+ sub $8, %r11
+ jbe L(tail)
+
+ mov (%rsi, %rdx), %rax
+#else
+ mov 8 (%rsi, %rdx), %rax
+ add $8, %edx
+#endif
+
+ mov %rcx, %r8
+ add %rax, %r8
+ sbb %r10, %r10
+
+ xor %rax, %r8
+ or %rcx, %r8
+ sub %r10, %r8
+ jnz L(tail)
+
+ mov %rax, (%rdi, %rdx)
+
+#ifdef USE_AS_STRNCPY
+ add $8, %edx
+
+ sub $8, %r11
+ jbe L(tail)
+
+ mov (%rsi, %rdx), %rax
+#else
+ mov 8 (%rsi, %rdx), %rax
+ add $8, %edx
+#endif
+
+ mov %rcx, %r8
+ add %rax, %r8
+ sbb %r10, %r10
+
+ xor %rax, %r8
+ or %rcx, %r8
+ sub %r10, %r8
+ jnz L(tail)
+
+ mov %rax, (%rdi, %rdx)
+
+#ifdef USE_AS_STRNCPY
+ add $8, %edx
+
+ sub $8, %r11
+ jbe L(tail)
+
+ mov (%rsi, %rdx), %rax
+#else
+ mov 8 (%rsi, %rdx), %rax
+ add $8, %edx
+#endif
+
+ mov %rcx, %r8
+ add %rax, %r8
+ sbb %r10, %r10
+
+ xor %rax, %r8
+ or %rcx, %r8
+ sub %r10, %r8
+ jnz L(tail)
+
+ mov %rax, (%rdi, %rdx)
+
+ add $8, %edx
+
+ cmp %r9, %rdx
+ jbe L(64loop)
+
+L(64after): # up to 1/2 L1
+
+L(pretry): # up to 1/2 L2
+#ifdef PIC
+# ifdef SHARED
+ mov _rtld_local_ro@GOTPCREL (%rip), %r9
+ cmpl $0, RTLD_GLOBAL_DL_PREFETCHW (%r9)
+ mov RTLD_GLOBAL_DL_CACHE2SIZEHALF (%r9), %r9
+# else
+ mov _dl_prefetchw@GOTPCREL (%rip), %r9
+ cmpl $0, (%r9)
+ mov _dl_cache2sizehalf@GOTPCREL (%rip), %r9
+ mov (%r9), %r9
+# endif
+#else
+ cmpl $0, _dl_prefetchw
+ mov _dl_cache2sizehalf, %r9
+#endif
+ jz L(preloop) # check for availability of PREFETCHW
+
+ .p2align 4
+
+L(prewloop): # 64-byte with prefetching to state M
+#ifdef USE_AS_STRNCPY
+ sub $8, %r11
+ jbe L(tail)
+#endif
+
+ mov (%rsi, %rdx), %rax
+
+ mov %rcx, %r8
+ add %rax, %r8
+ sbb %r10, %r10
+
+ xor %rax, %r8
+ or %rcx, %r8
+ sub %r10, %r8
+ jnz L(tail)
+
+ mov %rax, (%rdi, %rdx)
+
+#ifdef USE_AS_STRNCPY
+ add $8, %edx
+
+ sub $8, %r11
+ jbe L(tail)
+
+ mov (%rsi, %rdx), %rax
+#else
+ mov 8 (%rsi, %rdx), %rax
+ add $8, %edx
+#endif
+
+ mov %rcx, %r8
+ add %rax, %r8
+ sbb %r10, %r10
+
+ xor %rax, %r8
+ or %rcx, %r8
+ sub %r10, %r8
+ jnz L(tail)
+
+ mov %rax, (%rdi, %rdx)
+
+#ifdef USE_AS_STRNCPY
+ add $8, %edx
+
+ sub $8, %r11
+ jbe L(tail)
+
+ mov (%rsi, %rdx), %rax
+#else
+ mov 8 (%rsi, %rdx), %rax
+ add $8, %edx
+#endif
+
+ mov %rcx, %r8
+ add %rax, %r8
+ sbb %r10, %r10
+
+ xor %rax, %r8
+ or %rcx, %r8
+ sub %r10, %r8
+ jnz L(tail)
+
+ mov %rax, (%rdi, %rdx)
+
+#ifdef USE_AS_STRNCPY
+ add $8, %edx
+
+ sub $8, %r11
+ jbe L(tail)
+
+ mov (%rsi, %rdx), %rax
+#else
+ mov 8 (%rsi, %rdx), %rax
+ add $8, %edx
+#endif
+
+ mov %rcx, %r8
+ add %rax, %r8
+ sbb %r10, %r10
+
+ xor %rax, %r8
+ or %rcx, %r8
+ sub %r10, %r8
+ jnz L(tail)
+
+ mov %rax, (%rdi, %rdx)
+
+#ifdef USE_AS_STRNCPY
+ add $8, %edx
+
+ sub $8, %r11
+ jbe L(tail)
+
+ mov (%rsi, %rdx), %rax
+#else
+ mov 8 (%rsi, %rdx), %rax
+ add $8, %edx
+#endif
+
+ mov %rcx, %r8
+ add %rax, %r8
+ sbb %r10, %r10
+
+ xor %rax, %r8
+ or %rcx, %r8
+ sub %r10, %r8
+ jnz L(tail)
+
+ mov %rax, (%rdi, %rdx)
+
+#ifdef USE_AS_STRNCPY
+ add $8, %edx
+
+ sub $8, %r11
+ jbe L(tail)
+
+ mov (%rsi, %rdx), %rax
+#else
+ mov 8 (%rsi, %rdx), %rax
+ add $8, %edx
+#endif
+
+ mov %rcx, %r8
+ add %rax, %r8
+ sbb %r10, %r10
+
+ xor %rax, %r8
+ or %rcx, %r8
+ sub %r10, %r8
+ jnz L(tail)
+
+ mov %rax, (%rdi, %rdx)
+
+#ifdef USE_AS_STRNCPY
+ add $8, %edx
+
+ sub $8, %r11
+ jbe L(tail)
+
+ mov (%rsi, %rdx), %rax
+#else
+ mov 8 (%rsi, %rdx), %rax
+ add $8, %edx
+#endif
+
+ mov %rcx, %r8
+ add %rax, %r8
+ sbb %r10, %r10
+
+ xor %rax, %r8
+ or %rcx, %r8
+ sub %r10, %r8
+ jnz L(tail)
+
+ mov %rax, (%rdi, %rdx)
+
+#ifdef USE_AS_STRNCPY
+ add $8, %edx
+
+ sub $8, %r11
+ jbe L(tail)
+
+ mov (%rsi, %rdx), %rax
+#else
+ mov 8 (%rsi, %rdx), %rax
+ add $8, %edx
+#endif
+
+ mov %rcx, %r8
+ add %rax, %r8
+ sbb %r10, %r10
+
+ xor %rax, %r8
+ or %rcx, %r8
+ sub %r10, %r8
+ jnz L(tail)
+
+ mov %rax, (%rdi, %rdx)
+
+ prefetchw 512 + 8 (%rdi, %rdx)
+ prefetcht0 512 + 8 (%rsi, %rdx)
+
+ add $8, %edx
+
+ cmp %r9, %rdx
+ jb L(prewloop)
+ jmp L(preafter)
+
+L(prewafter): # up to 1/2 L2
+
+ .p2align 4
+
+L(preloop): # 64-byte with prefetching to state E
+#ifdef USE_AS_STRNCPY
+ sub $8, %r11
+ jbe L(tail)
+#endif
+
+ mov (%rsi, %rdx), %rax
+
+ mov %rcx, %r8
+ add %rax, %r8
+ sbb %r10, %r10
+
+ xor %rax, %r8
+ or %rcx, %r8
+ sub %r10, %r8
+ jnz L(tail)
+
+ mov %rax, (%rdi, %rdx)
+
+#ifdef USE_AS_STRNCPY
+ add $8, %edx
+
+ sub $8, %r11
+ jbe L(tail)
+
+ mov (%rsi, %rdx), %rax
+#else
+ mov 8 (%rsi, %rdx), %rax
+ add $8, %edx
+#endif
+
+ mov %rcx, %r8
+ add %rax, %r8
+ sbb %r10, %r10
+
+ xor %rax, %r8
+ or %rcx, %r8
+ sub %r10, %r8
+ jnz L(tail)
+
+ mov %rax, (%rdi, %rdx)
+
+#ifdef USE_AS_STRNCPY
+ add $8, %edx
+
+ sub $8, %r11
+ jbe L(tail)
+
+ mov (%rsi, %rdx), %rax
+#else
+ mov 8 (%rsi, %rdx), %rax
+ add $8, %edx
+#endif
+
+ mov %rcx, %r8
+ add %rax, %r8
+ sbb %r10, %r10
+
+ xor %rax, %r8
+ or %rcx, %r8
+ sub %r10, %r8
+ jnz L(tail)
+
+ mov %rax, (%rdi, %rdx)
+
+#ifdef USE_AS_STRNCPY
+ add $8, %edx
+
+ sub $8, %r11
+ jbe L(tail)
+
+ mov (%rsi, %rdx), %rax
+#else
+ mov 8 (%rsi, %rdx), %rax
+ add $8, %edx
+#endif
+
+ mov %rcx, %r8
+ add %rax, %r8
+ sbb %r10, %r10
+
+ xor %rax, %r8
+ or %rcx, %r8
+ sub %r10, %r8
+ jnz L(tail)
+
+ mov %rax, (%rdi, %rdx)
+
+#ifdef USE_AS_STRNCPY
+ add $8, %edx
+
+ sub $8, %r11
+ jbe L(tail)
+
+ mov (%rsi, %rdx), %rax
+#else
+ mov 8 (%rsi, %rdx), %rax
+ add $8, %edx
+#endif
+
+ mov %rcx, %r8
+ add %rax, %r8
+ sbb %r10, %r10
+
+ xor %rax, %r8
+ or %rcx, %r8
+ sub %r10, %r8
+ jnz L(tail)
+
+ mov %rax, (%rdi, %rdx)
+
+#ifdef USE_AS_STRNCPY
+ add $8, %edx
+
+ sub $8, %r11
+ jbe L(tail)
+
+ mov (%rsi, %rdx), %rax
+#else
+ mov 8 (%rsi, %rdx), %rax
+ add $8, %edx
+#endif
+
+ mov %rcx, %r8
+ add %rax, %r8
+ sbb %r10, %r10
+
+ xor %rax, %r8
+ or %rcx, %r8
+ sub %r10, %r8
+ jnz L(tail)
+
+ mov %rax, (%rdi, %rdx)
+
+#ifdef USE_AS_STRNCPY
+ add $8, %edx
+
+ sub $8, %r11
+ jbe L(tail)
+
+ mov (%rsi, %rdx), %rax
+#else
+ mov 8 (%rsi, %rdx), %rax
+ add $8, %edx
+#endif
+
+ mov %rcx, %r8
+ add %rax, %r8
+ sbb %r10, %r10
+
+ xor %rax, %r8
+ or %rcx, %r8
+ sub %r10, %r8
+ jnz L(tail)
+
+ mov %rax, (%rdi, %rdx)
+
+#ifdef USE_AS_STRNCPY
+ add $8, %edx
+
+ sub $8, %r11
+ jbe L(tail)
+
+ mov (%rsi, %rdx), %rax
+#else
+ mov 8 (%rsi, %rdx), %rax
+ add $8, %edx
+#endif
+
+ mov %rcx, %r8
+ add %rax, %r8
+ sbb %r10, %r10
+
+ xor %rax, %r8
+ or %rcx, %r8
+ sub %r10, %r8
+ jnz L(tail)
+
+ mov %rax, (%rdi, %rdx)
+
+ prefetcht0 512 + 8 (%rdi, %rdx)
+ prefetcht0 512 + 8 (%rsi, %rdx)
+
+ add $8, %edx
+
+ cmp %r9, %rdx
+ jb L(preloop)
+
+ .p2align 4
+
+L(preafter): # up to 1/2 of L2
+
+L(NTtry):
+ mfence
+
+L(NT): # 64-byte NT
+
+ .p2align 4
+
+L(NTloop):
+#ifdef USE_AS_STRNCPY
+ sub $8, %r11
+ jbe L(tail)
+#endif
+
+ mov (%rsi, %rdx), %rax
+
+ mov %rcx, %r8
+ add %rax, %r8
+ sbb %r10, %r10
+
+ xor %rax, %r8
+ or %rcx, %r8
+ sub %r10, %r8
+ jnz L(NTtail)
+
+ movnti %rax, (%rdi, %rdx)
+
+#ifdef USE_AS_STRNCPY
+ add $8, %rdx
+
+ sub $8, %r11
+ jbe L(tail)
+
+ mov (%rsi, %rdx), %rax
+#else
+ mov 8 (%rsi, %rdx), %rax
+ add $8, %rdx
+#endif
+
+ mov %rcx, %r8
+ add %rax, %r8
+ sbb %r10, %r10
+
+ xor %rax, %r8
+ or %rcx, %r8
+ sub %r10, %r8
+ jnz L(NTtail)
+
+ movnti %rax, (%rdi, %rdx)
+
+#ifdef USE_AS_STRNCPY
+ add $8, %rdx
+
+ sub $8, %r11
+ jbe L(tail)
+
+ mov (%rsi, %rdx), %rax
+#else
+ mov 8 (%rsi, %rdx), %rax
+ add $8, %rdx
+#endif
+
+ mov %rcx, %r8
+ add %rax, %r8
+ sbb %r10, %r10
+
+ xor %rax, %r8
+ or %rcx, %r8
+ sub %r10, %r8
+ jnz L(NTtail)
+
+ movnti %rax, (%rdi, %rdx)
+
+#ifdef USE_AS_STRNCPY
+ add $8, %rdx
+
+ sub $8, %r11
+ jbe L(tail)
+
+ mov (%rsi, %rdx), %rax
+#else
+ mov 8 (%rsi, %rdx), %rax
+ add $8, %rdx
+#endif
+
+ mov %rcx, %r8
+ add %rax, %r8
+ sbb %r10, %r10
+
+ xor %rax, %r8
+ or %rcx, %r8
+ sub %r10, %r8
+ jnz L(NTtail)
+
+ movnti %rax, (%rdi, %rdx)
+
+#ifdef USE_AS_STRNCPY
+ add $8, %rdx
+
+ sub $8, %r11
+ jbe L(tail)
+
+ mov (%rsi, %rdx), %rax
+#else
+ mov 8 (%rsi, %rdx), %rax
+ add $8, %rdx
+#endif
+
+ mov %rcx, %r8
+ add %rax, %r8
+ sbb %r10, %r10
+
+ xor %rax, %r8
+ or %rcx, %r8
+ sub %r10, %r8
+ jnz L(NTtail)
+
+ movnti %rax, (%rdi, %rdx)
+
+#ifdef USE_AS_STRNCPY
+ add $8, %rdx
+
+ sub $8, %r11
+ jbe L(tail)
+
+ mov (%rsi, %rdx), %rax
+#else
+ mov 8 (%rsi, %rdx), %rax
+ add $8, %rdx
+#endif
+
+ mov %rcx, %r8
+ add %rax, %r8
+ sbb %r10, %r10
+
+ xor %rax, %r8
+ or %rcx, %r8
+ sub %r10, %r8
+ jnz L(NTtail)
+
+ movnti %rax, (%rdi, %rdx)
+
+#ifdef USE_AS_STRNCPY
+ add $8, %rdx
+
+ sub $8, %r11
+ jbe L(tail)
+
+ mov (%rsi, %rdx), %rax
+#else
+ mov 8 (%rsi, %rdx), %rax
+ add $8, %rdx
+#endif
+
+ mov %rcx, %r8
+ add %rax, %r8
+ sbb %r10, %r10
+
+ xor %rax, %r8
+ or %rcx, %r8
+ sub %r10, %r8
+ jnz L(NTtail)
+
+ movnti %rax, (%rdi, %rdx)
+
+#ifdef USE_AS_STRNCPY
+ add $8, %rdx
+
+ sub $8, %r11
+ jbe L(tail)
+
+ mov (%rsi, %rdx), %rax
+#else
+ mov 8 (%rsi, %rdx), %rax
+ add $8, %rdx
+#endif
+
+ mov %rcx, %r8
+ add %rax, %r8
+ sbb %r10, %r10
+
+ xor %rax, %r8
+ or %rcx, %r8
+ sub %r10, %r8
+ jnz L(NTtail)
+
+ movnti %rax, (%rdi, %rdx)
+
+ prefetchnta 768 + 8 (%rsi, %rdx)
+
+ add $8, %rdx
+ jmp L(NTloop)
+
+ .p2align 4
+
+L(NTtail):
+ mfence # serialize memory operations
+
+ .p2align 4
+
+L(NTafter):
+
+L(tailtry):
+
+L(tail): # 1-byte tail
+#ifdef USE_AS_STRNCPY
+ add $8, %r11
+ jz L(exit)
+#endif
+
+ .p2align 4
+
+L(tailloop):
+ movzbl (%rsi, %rdx), %eax
+ test %al, %al
+ mov %al, (%rdi, %rdx)
+ jz L(exit)
+
+ inc %rdx
+
+#ifdef USE_AS_STRNCPY
+ dec %r11
+ jz L(exit)
+#endif
+ jmp L(tailloop)
+
+ .p2align 4
+
+L(tailafter):
+
+L(exit):
+#ifdef USE_AS_STPCPY
+ lea (%rdi, %rdx), %rax
+#else
+ mov %rdi, %rax
+#endif
+
+#ifdef USE_AS_STRNCPY
+ test %r11, %r11
+ mov %r11, %rcx
+ jnz 2f
+
+ rep
+ ret
+
+ .p2align 4
+
+2:
#ifdef USE_AS_STPCPY
- movq %rdx, %rax /* Destination is return value. */
+ mov %rax, %r8
#else
- movq %rdi, %rax /* Source is return value. */
+ mov %rdi, %r8
+# endif
+
+ xor %eax, %eax # bzero () would do too, but usually there are only a handfull of bytes left
+ shr $3, %rcx
+ lea (%rdi, %rdx), %rdi
+ jz 3f
+
+ rep stosq
+
+ and $7, %r11d
+ jz 1f
+
+ .p2align 4,, 4
+
+3:
+ mov %al, (%rdi)
+ inc %rdi
+
+ dec %r11d
+ jnz 3b
+
+ .p2align 4,, 4
+
+1:
+ mov %r8, %rax
#endif
- retq
-END (BP_SYM (STRCPY))
-#ifndef USE_AS_STPCPY
+ ret
+
+END (strcpy)
+
+#if !defined USE_AS_STPCPY && !defined USE_AS_STRNCPY
libc_hidden_builtin_def (strcpy)
#endif
diff -Npruw -x CVS -x vssver.scc -x powerpc -x sync_file_range.c libc/sysdeps/x86_64/strncpy.S libc/sysdeps/x86_64/strncpy.S
--- libc/sysdeps/x86_64/strncpy.S 1969-12-31 18:00:00.000000000 -0600
+++ libc/sysdeps/x86_64/strncpy.S 2006-05-05 15:25:34.559341000 -0500
@@ -0,0 +1,8 @@
+#define USE_AS_STRNCPY
+#define strcpy __strncpy
+
+#include <sysdeps/x86_64/strcpy.S>
+
+weak_alias (__strncpy, strncpy)
+libc_hidden_def (__strncpy)
+libc_hidden_builtin_def (strncpy)