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GNU C Library master sources branch hjl/erms/i386 created. glibc-2.23-127-gc835e4c
- From: hjl at sourceware dot org
- To: glibc-cvs at sourceware dot org
- Date: 28 Mar 2016 13:12:33 -0000
- Subject: GNU C Library master sources branch hjl/erms/i386 created. glibc-2.23-127-gc835e4c
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The branch, hjl/erms/i386 has been created
at c835e4cad72cfda9c2702047e6ac31a8aba8e61d (commit)
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http://sourceware.org/git/gitweb.cgi?p=glibc.git;a=commitdiff;h=c835e4cad72cfda9c2702047e6ac31a8aba8e61d
commit c835e4cad72cfda9c2702047e6ac31a8aba8e61d
Author: H.J. Lu <hjl.tools@gmail.com>
Date: Wed Sep 21 15:21:28 2011 -0700
Add 32-bit Enhanced REP MOVSB/STOSB (ERMS) memcpy/memset
Add and test 32-bit memcpy/memset with Enhanced REP MOVSB/STOSB (ERMS).
* sysdeps/i386/i686/multiarch/Makefile (sysdep_routines): Add
bcopy-erms, memcpy-erms, memmove-erms, mempcpy-erms, bzero-erms
and memset-erms.
* sysdeps/i386/i686/multiarch/bcopy-erms.S: New file.
* sysdeps/i386/i686/multiarch/bzero-erms.S: Likewise.
* sysdeps/i386/i686/multiarch/memcpy-erms.S: Likewise.
* sysdeps/i386/i686/multiarch/memmove-erms.S: Likewise.
* sysdeps/i386/i686/multiarch/mempcpy-erms.S: Likewise.
* sysdeps/i386/i686/multiarch/memset-erms.S: Likewise.
* sysdeps/i386/i686/multiarch/ifunc-impl-list.c
(__libc_ifunc_impl_list): Add __bcopy_erms, __bzero_erms,
__memmove_chk_erms, __memmove_erms, __memset_chk_erms,
__memset_erms, __memcpy_chk_erms, __memcpy_erms,
__mempcpy_chk_erms and __mempcpy_erms.
diff --git a/sysdeps/i386/i686/multiarch/Makefile b/sysdeps/i386/i686/multiarch/Makefile
index 700010d..6bcef4c 100644
--- a/sysdeps/i386/i686/multiarch/Makefile
+++ b/sysdeps/i386/i686/multiarch/Makefile
@@ -25,7 +25,9 @@ sysdep_routines += bzero-sse2 memset-sse2 memcpy-ssse3 mempcpy-ssse3 \
strcasecmp_l-sse4 strncase_l-sse4 \
bcopy-sse2-unaligned memcpy-sse2-unaligned \
mempcpy-sse2-unaligned memmove-sse2-unaligned \
- strcspn-c strpbrk-c strspn-c
+ strcspn-c strpbrk-c strspn-c \
+ bcopy-erms memcpy-erms memmove-erms mempcpy-erms \
+ bzero-erms memset-erms
CFLAGS-varshift.c += -msse4
CFLAGS-strcspn-c.c += -msse4
CFLAGS-strpbrk-c.c += -msse4
diff --git a/sysdeps/i386/i686/multiarch/bcopy-erms.S b/sysdeps/i386/i686/multiarch/bcopy-erms.S
new file mode 100644
index 0000000..da9e160
--- /dev/null
+++ b/sysdeps/i386/i686/multiarch/bcopy-erms.S
@@ -0,0 +1,4 @@
+#define USE_AS_MEMMOVE
+#define USE_AS_BCOPY
+#define MEMCPY __bcopy_erms
+#include "memcpy-erms.S"
diff --git a/sysdeps/i386/i686/multiarch/bzero-erms.S b/sysdeps/i386/i686/multiarch/bzero-erms.S
new file mode 100644
index 0000000..2c3bed6
--- /dev/null
+++ b/sysdeps/i386/i686/multiarch/bzero-erms.S
@@ -0,0 +1,3 @@
+#define USE_AS_BZERO
+#define __memset_erms __bzero_erms
+#include "memset-erms.S"
diff --git a/sysdeps/i386/i686/multiarch/ifunc-impl-list.c b/sysdeps/i386/i686/multiarch/ifunc-impl-list.c
index ef30a95..f3cbca0 100644
--- a/sysdeps/i386/i686/multiarch/ifunc-impl-list.c
+++ b/sysdeps/i386/i686/multiarch/ifunc-impl-list.c
@@ -44,6 +44,7 @@ __libc_ifunc_impl_list (const char *name, struct libc_ifunc_impl *array,
__bcopy_ssse3)
IFUNC_IMPL_ADD (array, i, bcopy, HAS_CPU_FEATURE (SSE2),
__bcopy_sse2_unaligned)
+ IFUNC_IMPL_ADD (array, i, bcopy, 1, __bcopy_erms)
IFUNC_IMPL_ADD (array, i, bcopy, 1, __bcopy_ia32))
/* Support sysdeps/i386/i686/multiarch/bzero.S. */
@@ -52,6 +53,7 @@ __libc_ifunc_impl_list (const char *name, struct libc_ifunc_impl *array,
__bzero_sse2_rep)
IFUNC_IMPL_ADD (array, i, bzero, HAS_CPU_FEATURE (SSE2),
__bzero_sse2)
+ IFUNC_IMPL_ADD (array, i, bzero, 1, __bzero_erms)
IFUNC_IMPL_ADD (array, i, bzero, 1, __bzero_ia32))
/* Support sysdeps/i386/i686/multiarch/memchr.S. */
@@ -82,6 +84,8 @@ __libc_ifunc_impl_list (const char *name, struct libc_ifunc_impl *array,
HAS_CPU_FEATURE (SSE2),
__memmove_chk_sse2_unaligned)
IFUNC_IMPL_ADD (array, i, __memmove_chk, 1,
+ __memmove_chk_erms)
+ IFUNC_IMPL_ADD (array, i, __memmove_chk, 1,
__memmove_chk_ia32))
/* Support sysdeps/i386/i686/multiarch/memmove.S. */
@@ -92,6 +96,7 @@ __libc_ifunc_impl_list (const char *name, struct libc_ifunc_impl *array,
__memmove_ssse3)
IFUNC_IMPL_ADD (array, i, memmove, HAS_CPU_FEATURE (SSE2),
__memmove_sse2_unaligned)
+ IFUNC_IMPL_ADD (array, i, memmove, 1, __memmove_erms)
IFUNC_IMPL_ADD (array, i, memmove, 1, __memmove_ia32))
/* Support sysdeps/i386/i686/multiarch/memrchr.S. */
@@ -111,6 +116,8 @@ __libc_ifunc_impl_list (const char *name, struct libc_ifunc_impl *array,
HAS_CPU_FEATURE (SSE2),
__memset_chk_sse2)
IFUNC_IMPL_ADD (array, i, __memset_chk, 1,
+ __memset_chk_erms)
+ IFUNC_IMPL_ADD (array, i, __memset_chk, 1,
__memset_chk_ia32))
/* Support sysdeps/i386/i686/multiarch/memset.S. */
@@ -119,6 +126,7 @@ __libc_ifunc_impl_list (const char *name, struct libc_ifunc_impl *array,
__memset_sse2_rep)
IFUNC_IMPL_ADD (array, i, memset, HAS_CPU_FEATURE (SSE2),
__memset_sse2)
+ IFUNC_IMPL_ADD (array, i, memset, 1, __memset_erms)
IFUNC_IMPL_ADD (array, i, memset, 1, __memset_ia32))
/* Support sysdeps/i386/i686/multiarch/rawmemchr.S. */
@@ -319,6 +327,8 @@ __libc_ifunc_impl_list (const char *name, struct libc_ifunc_impl *array,
HAS_CPU_FEATURE (SSE2),
__memcpy_chk_sse2_unaligned)
IFUNC_IMPL_ADD (array, i, __memcpy_chk, 1,
+ __memcpy_chk_erms)
+ IFUNC_IMPL_ADD (array, i, __memcpy_chk, 1,
__memcpy_chk_ia32))
/* Support sysdeps/i386/i686/multiarch/memcpy.S. */
@@ -329,6 +339,7 @@ __libc_ifunc_impl_list (const char *name, struct libc_ifunc_impl *array,
__memcpy_ssse3)
IFUNC_IMPL_ADD (array, i, memcpy, HAS_CPU_FEATURE (SSE2),
__memcpy_sse2_unaligned)
+ IFUNC_IMPL_ADD (array, i, memcpy, 1, __memcpy_erms)
IFUNC_IMPL_ADD (array, i, memcpy, 1, __memcpy_ia32))
/* Support sysdeps/i386/i686/multiarch/mempcpy_chk.S. */
@@ -343,6 +354,8 @@ __libc_ifunc_impl_list (const char *name, struct libc_ifunc_impl *array,
HAS_CPU_FEATURE (SSE2),
__mempcpy_chk_sse2_unaligned)
IFUNC_IMPL_ADD (array, i, __mempcpy_chk, 1,
+ __mempcpy_chk_erms)
+ IFUNC_IMPL_ADD (array, i, __mempcpy_chk, 1,
__mempcpy_chk_ia32))
/* Support sysdeps/i386/i686/multiarch/mempcpy.S. */
@@ -353,6 +366,7 @@ __libc_ifunc_impl_list (const char *name, struct libc_ifunc_impl *array,
__mempcpy_ssse3)
IFUNC_IMPL_ADD (array, i, mempcpy, HAS_CPU_FEATURE (SSE2),
__mempcpy_sse2_unaligned)
+ IFUNC_IMPL_ADD (array, i, mempcpy, 1, __mempcpy_erms)
IFUNC_IMPL_ADD (array, i, mempcpy, 1, __mempcpy_ia32))
/* Support sysdeps/i386/i686/multiarch/strlen.S. */
diff --git a/sysdeps/i386/i686/multiarch/memcpy-erms.S b/sysdeps/i386/i686/multiarch/memcpy-erms.S
new file mode 100644
index 0000000..f134e79
--- /dev/null
+++ b/sysdeps/i386/i686/multiarch/memcpy-erms.S
@@ -0,0 +1,102 @@
+/* memcpy with Enhanced REP MOVSB/STOSB
+ Copyright (C) 2014 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, write to the Free
+ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+ 02111-1307 USA. */
+
+#include <sysdep.h>
+
+#if !defined NOT_IN_libc \
+ && (defined SHARED \
+ || defined USE_AS_MEMMOVE \
+ || !defined USE_MULTIARCH)
+
+#include "asm-syntax.h"
+
+#ifndef MEMCPY
+# define MEMCPY __memcpy_erms
+# define MEMCPY_CHK __memcpy_chk_erms
+#endif
+
+#ifdef USE_AS_BCOPY
+# define STR2 12
+# define STR1 STR2+4
+# define N STR1+4
+#else
+# define STR1 12
+# define STR2 STR1+4
+# define N STR2+4
+#endif
+
+#define CFI_PUSH(REG) \
+ cfi_adjust_cfa_offset (4); \
+ cfi_rel_offset (REG, 0)
+
+#define CFI_POP(REG) \
+ cfi_adjust_cfa_offset (-4); \
+ cfi_restore (REG)
+
+#define PUSH(REG) pushl REG; CFI_PUSH (REG)
+#define POP(REG) popl REG; CFI_POP (REG)
+
+ .section .text.erms,"ax",@progbits
+#if !defined USE_AS_BCOPY
+ENTRY (MEMCPY_CHK)
+ movl 12(%esp), %eax
+ cmpl %eax, 16(%esp)
+ jb HIDDEN_JUMPTARGET (__chk_fail)
+END (MEMCPY_CHK)
+#endif
+ENTRY (MEMCPY)
+ PUSH (%esi)
+ PUSH (%edi)
+ movl N(%esp), %ecx
+ movl STR1(%esp), %edi
+ movl STR2(%esp), %esi
+ mov %edi, %eax
+#ifdef USE_AS_MEMPCPY
+ add %ecx, %eax
+#endif
+
+#ifdef USE_AS_MEMMOVE
+ cmp %esi, %edi
+ jbe L(copy_forward)
+ lea (%esi,%ecx), %edx
+ cmp %edx, %edi
+ jb L(copy_backward)
+L(copy_forward):
+#endif
+
+ rep movsb
+ POP (%edi)
+ POP (%esi)
+ ret
+
+#ifdef USE_AS_MEMMOVE
+L(copy_backward):
+ lea -1(%edi,%ecx), %edi
+ lea -1(%esi,%ecx), %esi
+ std
+ rep movsb
+ cld
+ POP (%edi)
+ POP (%esi)
+ ret
+#endif
+
+END (MEMCPY)
+
+#endif
diff --git a/sysdeps/i386/i686/multiarch/memmove-erms.S b/sysdeps/i386/i686/multiarch/memmove-erms.S
new file mode 100644
index 0000000..357289a
--- /dev/null
+++ b/sysdeps/i386/i686/multiarch/memmove-erms.S
@@ -0,0 +1,4 @@
+#define USE_AS_MEMMOVE
+#define MEMCPY __memmove_erms
+#define MEMCPY_CHK __memmove_chk_erms
+#include "memcpy-erms.S"
diff --git a/sysdeps/i386/i686/multiarch/mempcpy-erms.S b/sysdeps/i386/i686/multiarch/mempcpy-erms.S
new file mode 100644
index 0000000..01d3bf8
--- /dev/null
+++ b/sysdeps/i386/i686/multiarch/mempcpy-erms.S
@@ -0,0 +1,4 @@
+#define USE_AS_MEMPCPY
+#define MEMCPY __mempcpy_erms
+#define MEMCPY_CHK __mempcpy_chk_erms
+#include "memcpy-erms.S"
diff --git a/sysdeps/i386/i686/multiarch/memset-erms.S b/sysdeps/i386/i686/multiarch/memset-erms.S
new file mode 100644
index 0000000..807a6e4
--- /dev/null
+++ b/sysdeps/i386/i686/multiarch/memset-erms.S
@@ -0,0 +1,69 @@
+/* memset with Enhanced REP MOVSB/STOSB
+ Copyright (C) 2014 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, write to the Free
+ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+ 02111-1307 USA. */
+
+#ifndef NOT_IN_libc
+
+#include <sysdep.h>
+
+#define CFI_PUSH(REG) \
+ cfi_adjust_cfa_offset (4); \
+ cfi_rel_offset (REG, 0)
+
+#define CFI_POP(REG) \
+ cfi_adjust_cfa_offset (-4); \
+ cfi_restore (REG)
+
+#define PUSH(REG) pushl REG; CFI_PUSH (REG)
+#define POP(REG) popl REG; CFI_POP (REG)
+
+#define STR1 8
+#ifdef USE_AS_BZERO
+#define N STR1+4
+#else
+#define STR2 STR1+4
+#define N STR2+4
+#endif
+
+ .section .text.erms,"ax",@progbits
+#if defined SHARED && !defined NOT_IN_libc && !defined USE_AS_BZERO
+ENTRY (__memset_chk_erms)
+ movl 12(%esp), %eax
+ cmpl %eax, 16(%esp)
+ jb HIDDEN_JUMPTARGET (__chk_fail)
+END (__memset_chk_erms)
+#endif
+ENTRY (__memset_erms)
+ PUSH (%edi)
+ movl N(%esp), %ecx
+ movl STR1(%esp), %edi
+#ifdef USE_AS_BZERO
+ xor %eax, %eax
+#else
+ movzbl STR2(%esp), %eax
+ mov %edi, %edx
+#endif
+ rep stosb
+#ifndef USE_AS_BZERO
+ mov %edx, %eax
+#endif
+ POP (%edi)
+ ret
+END (__memset_erms)
+
+#endif
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