* [PATCH 00/20] RFC: Add the CPU run-time library for C
@ 2018-06-12 22:19 H.J. Lu
2018-06-12 22:19 ` [PATCH 02/20] libcpu-rt-c/x86: Add cacheinfo H.J. Lu
` (21 more replies)
0 siblings, 22 replies; 33+ messages in thread
From: H.J. Lu @ 2018-06-12 22:19 UTC (permalink / raw)
To: libc-alpha
The current glibc has memory and string functions highly optimized for
the current processors on the market. But it takes years for released
glibc to be installed on end-users machines. In 2018, many machines
with the latest Intel processors are still running glibc 2.17, which
was released in February, 2013.
This patch set introduces the CPU run-time library for C, libcpu-rt-c.
libcpu-rt-c contains a subset of the C library with the optimized
functions. The resulting libcpu-rt-c.so is binary compatible with
older versions of libc.so so that libcpu-rt-c.so can be used with
LD_PRELOAD or linked directly with applications. For some workloads,
LD_PRELOAD=libcpu-rt-c.so has shown to improve performance by as much
as 20% on Skylake machine.
H.J. Lu (20):
Initial empty CPU run-time library for C: libcpu-rt-c
libcpu-rt-c/x86: Add cacheinfo
libcpu-rt-c/x86: Add cpu-rt-tunables.c
libcpu-rt-c/x86-64: Add memchr
libcpu-rt-c/x86-64: Add memcmp
libcpu-rt-c/x86-64: Add memcpy, memmove and mempcpy
libcpu-rt-c/x86-64: Add memrchr
libcpu-rt-c/x86-64: Add memset and wmemset
libcpu-rt-c/i386: Add memcmp
libcpu-rt-c: Don't use IFUNC memcmp in init_cpu_features
libcpu-rt-c/x86-64: Add strchr
libcpu-rt-c/x86-64: Add strcmp
libcpu-rt-c/x86-64: Add strcpy
libcpu-rt-c/x86-64: Add strlen
libcpu-rt-c/x86-64: Add strcat
libcpu-rt-c/x86-64: Add strnlen
libcpu-rt-c/x86-64: Add strncat
libcpu-rt-c/x86-64: Add strncmp
libcpu-rt-c/x86-64: Add strncpy
libcpu-rt-c/x86-64: Add strrchr
Makeconfig | 4 +-
configure | 17 +++++
configure.ac | 11 ++++
cpu-rt-c/Makefile | 42 ++++++++++++
cpu-rt-c/cpu-rt-misc.c | 22 +++++++
cpu-rt-c/cpu-rt-support.h | 38 +++++++++++
cpu-rt-c/cpu-rt-tunables.c | 28 ++++++++
cpu-rt-c/dl-tunables.h | 57 ++++++++++++++++
elf/dl-misc.c | 2 +
elf/dl-tunables.c | 2 +-
shlib-versions | 3 +
sysdeps/i386/Makefile | 7 ++
sysdeps/i386/dl-procinfo.c | 16 +++--
sysdeps/i386/i686/multiarch/Makefile | 4 ++
sysdeps/i386/i686/multiarch/memcmp-ia32.S | 8 ++-
sysdeps/i386/i686/multiarch/memcmp-sse4.S | 2 +-
sysdeps/i386/i686/multiarch/memcmp-ssse3.S | 2 +-
sysdeps/i386/i686/multiarch/memcmp.c | 2 +-
sysdeps/unix/sysv/linux/i386/dl-procinfo.h | 4 +-
sysdeps/x86/Makefile | 13 ++++
sysdeps/x86/cacheinfo.c | 19 +++++-
sysdeps/x86/cpu-features.c | 46 ++++++++-----
sysdeps/x86/cpu-features.h | 12 +++-
sysdeps/x86/cpu-rt-misc.c | 65 +++++++++++++++++++
sysdeps/x86/cpu-rt-support.h | 21 ++++++
sysdeps/x86/cpu-tunables.c | 14 +++-
sysdeps/x86/dl-procinfo.c | 41 +++++++-----
sysdeps/x86/dl-procinfo.h | 15 +++--
sysdeps/x86/ldsodefs.h | 17 ++++-
sysdeps/x86_64/Makefile | 10 +++
sysdeps/x86_64/memchr.S | 2 +-
sysdeps/x86_64/memmove.S | 12 +++-
sysdeps/x86_64/memrchr.S | 6 ++
sysdeps/x86_64/memset.S | 6 +-
sysdeps/x86_64/multiarch/Makefile | 30 +++++++++
sysdeps/x86_64/multiarch/memchr-avx2.S | 2 +-
sysdeps/x86_64/multiarch/memchr-sse2.S | 2 +-
sysdeps/x86_64/multiarch/memchr.c | 6 +-
sysdeps/x86_64/multiarch/memcmp-avx2-movbe.S | 2 +-
sysdeps/x86_64/multiarch/memcmp-sse2.S | 2 +-
sysdeps/x86_64/multiarch/memcmp-sse4.S | 2 +-
sysdeps/x86_64/multiarch/memcmp-ssse3.S | 2 +-
sysdeps/x86_64/multiarch/memcmp.c | 4 +-
sysdeps/x86_64/multiarch/memcpy-ssse3-back.S | 6 +-
sysdeps/x86_64/multiarch/memcpy-ssse3.S | 6 +-
sysdeps/x86_64/multiarch/memcpy.c | 14 ++--
.../multiarch/memmove-avx-unaligned-erms.S | 2 +-
.../multiarch/memmove-avx512-no-vzeroupper.S | 8 ++-
.../multiarch/memmove-avx512-unaligned-erms.S | 2 +-
.../multiarch/memmove-sse2-unaligned-erms.S | 2 +-
.../multiarch/memmove-vec-unaligned-erms.S | 33 ++++++----
sysdeps/x86_64/multiarch/memmove.c | 10 ++-
sysdeps/x86_64/multiarch/mempcpy.c | 10 ++-
sysdeps/x86_64/multiarch/memrchr-avx2.S | 2 +-
sysdeps/x86_64/multiarch/memrchr-sse2.S | 2 +-
sysdeps/x86_64/multiarch/memrchr.c | 8 ++-
.../multiarch/memset-avx2-unaligned-erms.S | 2 +-
.../multiarch/memset-avx512-no-vzeroupper.S | 4 +-
.../multiarch/memset-avx512-unaligned-erms.S | 2 +-
.../multiarch/memset-sse2-unaligned-erms.S | 8 ++-
.../multiarch/memset-vec-unaligned-erms.S | 17 +++--
sysdeps/x86_64/multiarch/memset.c | 4 +-
.../x86_64/multiarch/strcat-sse2-unaligned.S | 2 +-
sysdeps/x86_64/multiarch/strcat-sse2.S | 2 +-
sysdeps/x86_64/multiarch/strcat-ssse3.S | 2 +-
sysdeps/x86_64/multiarch/strcat.c | 4 +-
sysdeps/x86_64/multiarch/strchr-avx2.S | 2 +-
sysdeps/x86_64/multiarch/strchr-sse2-no-bsf.S | 2 +-
sysdeps/x86_64/multiarch/strchr-sse2.S | 2 +-
sysdeps/x86_64/multiarch/strchr.c | 4 +-
sysdeps/x86_64/multiarch/strcmp-avx2.S | 2 +-
.../x86_64/multiarch/strcmp-sse2-unaligned.S | 2 +-
sysdeps/x86_64/multiarch/strcmp-sse2.S | 2 +-
sysdeps/x86_64/multiarch/strcmp-ssse3.S | 2 +-
sysdeps/x86_64/multiarch/strcmp.c | 4 +-
.../x86_64/multiarch/strcpy-sse2-unaligned.S | 2 +-
sysdeps/x86_64/multiarch/strcpy-sse2.S | 2 +-
sysdeps/x86_64/multiarch/strcpy-ssse3.S | 2 +-
sysdeps/x86_64/multiarch/strcpy.c | 4 +-
sysdeps/x86_64/multiarch/strlen-avx2.S | 2 +-
sysdeps/x86_64/multiarch/strlen-sse2.S | 2 +-
sysdeps/x86_64/multiarch/strlen.c | 4 +-
sysdeps/x86_64/multiarch/strncat-c.c | 2 +-
sysdeps/x86_64/multiarch/strncat.c | 6 +-
sysdeps/x86_64/multiarch/strncmp-sse2.S | 2 +-
sysdeps/x86_64/multiarch/strncmp.c | 4 +-
sysdeps/x86_64/multiarch/strncpy.c | 4 +-
sysdeps/x86_64/multiarch/strnlen-sse2.S | 2 +-
sysdeps/x86_64/multiarch/strnlen.c | 20 +++++-
sysdeps/x86_64/multiarch/strrchr-avx2.S | 2 +-
sysdeps/x86_64/multiarch/strrchr-sse2.S | 2 +-
sysdeps/x86_64/multiarch/strrchr.c | 4 +-
sysdeps/x86_64/multiarch/wmemset.c | 10 ++-
sysdeps/x86_64/strcat.S | 2 +
sysdeps/x86_64/strncat.c | 9 +++
95 files changed, 717 insertions(+), 166 deletions(-)
create mode 100644 cpu-rt-c/Makefile
create mode 100644 cpu-rt-c/cpu-rt-misc.c
create mode 100644 cpu-rt-c/cpu-rt-support.h
create mode 100644 cpu-rt-c/cpu-rt-tunables.c
create mode 100644 cpu-rt-c/dl-tunables.h
create mode 100644 sysdeps/x86/cpu-rt-misc.c
create mode 100644 sysdeps/x86/cpu-rt-support.h
create mode 100644 sysdeps/x86_64/strncat.c
--
2.17.1
^ permalink raw reply [flat|nested] 33+ messages in thread
* [PATCH 03/20] libcpu-rt-c/x86: Add cpu-rt-tunables.c
2018-06-12 22:19 [PATCH 00/20] RFC: Add the CPU run-time library for C H.J. Lu
2018-06-12 22:19 ` [PATCH 02/20] libcpu-rt-c/x86: Add cacheinfo H.J. Lu
@ 2018-06-12 22:19 ` H.J. Lu
2018-06-12 22:19 ` [PATCH 08/20] libcpu-rt-c/x86-64: Add memset and wmemset H.J. Lu
` (19 subsequent siblings)
21 siblings, 0 replies; 33+ messages in thread
From: H.J. Lu @ 2018-06-12 22:19 UTC (permalink / raw)
To: libc-alpha
Add cpu-rt-tunables.c to support GLIBC_TUNABLES in libcpu-rt-c.
* cpu-rt-c/cpu-rt-misc.c: New file.
* cpu-rt-c/cpu-rt-support.h: Likewise.
* cpu-rt-c/cpu-rt-tunables.c: Likewise.
* cpu-rt-c/dl-tunables.h: Likewise.
* sysdeps/x86/cpu-rt-misc.c: Likewise.
* sysdeps/x86/cpu-rt-support.h: Likewise.
* elf/dl-misc.c (_dl_sysdep_read_whole_file): Make it libc only.
(_dl_debug_vdprintf): Likewise.
(_dl_debug_printf): Likewise.
(_dl_debug_printf_c): Likewise.
(_dl_dprintf): Likewise.
(_dl_name_match_p): Likewise.
(_dl_higher_prime_number): Likewise.
* sysdeps/i386/dl-procinfo.c: Support libcpu-rt-c.
* sysdeps/unix/sysv/linux/i386/dl-procinfo.h: Likewise.
* sysdeps/x86/dl-procinfo.c: Likewise.
* sysdeps/x86/dl-procinfo.h: Likewise.
* sysdeps/x86/ldsodefs.h: Likewise.
* sysdeps/x86/Makefile (libcpu-rt-c-sysdep_routines): Add
cpu-rt-misc and cpu-rt-tunables.
(tunables-type): New.
(CPPFLAGS-cpu-rt-tunables.c): Likewise.
(CFLAGS-cpu-rt-tunables.c): Likewise.
* sysdeps/x86/cpu-features.c: Don't include <dl-hwcap.h> nor
<elf/dl-tunables.h> in libcpu-rt-c.
Include <cpu-rt-c/dl-tunables.h> in libcpu-rt-c.
(init_cpu_features_tunables): New. Extracted from ...
(init_cpu_features): This. Call init_cpu_features_tunables if
not in libcpu-rt-c. Don't access dl_platform, dl_hwcap nor
dl_hwcap_mask in libcpu-rt-c.
* sysdeps/x86/cpu-features.h (__cpu_rt_x86_init_cpu_features):
New hidden prototype in libcpu-rt-c.
(INIT_ARCH): Defined to __cpu_rt_x86_init_cpu_features in
libcpu-rt-c.
* sysdeps/x86/cpu-tunables.c: Include <cpu-rt-c/dl-tunables.h>,
instead of <elf/dl-tunables.h>, in libcpu-rt-c.
---
cpu-rt-c/cpu-rt-misc.c | 22 ++++++++
cpu-rt-c/cpu-rt-support.h | 38 +++++++++++++
cpu-rt-c/cpu-rt-tunables.c | 28 ++++++++++
cpu-rt-c/dl-tunables.h | 57 +++++++++++++++++++
elf/dl-misc.c | 2 +
elf/dl-tunables.c | 2 +-
sysdeps/i386/dl-procinfo.c | 16 +++---
sysdeps/unix/sysv/linux/i386/dl-procinfo.h | 4 +-
sysdeps/x86/Makefile | 11 +++-
sysdeps/x86/cpu-features.c | 46 ++++++++++-----
sysdeps/x86/cpu-features.h | 12 +++-
sysdeps/x86/cpu-rt-misc.c | 65 ++++++++++++++++++++++
sysdeps/x86/cpu-rt-support.h | 21 +++++++
sysdeps/x86/cpu-tunables.c | 6 +-
sysdeps/x86/dl-procinfo.c | 41 ++++++++------
sysdeps/x86/dl-procinfo.h | 15 +++--
sysdeps/x86/ldsodefs.h | 17 +++++-
17 files changed, 349 insertions(+), 54 deletions(-)
create mode 100644 cpu-rt-c/cpu-rt-misc.c
create mode 100644 cpu-rt-c/cpu-rt-support.h
create mode 100644 cpu-rt-c/cpu-rt-tunables.c
create mode 100644 cpu-rt-c/dl-tunables.h
create mode 100644 sysdeps/x86/cpu-rt-misc.c
create mode 100644 sysdeps/x86/cpu-rt-support.h
diff --git a/cpu-rt-c/cpu-rt-misc.c b/cpu-rt-c/cpu-rt-misc.c
new file mode 100644
index 0000000000..6ec8ca8bea
--- /dev/null
+++ b/cpu-rt-c/cpu-rt-misc.c
@@ -0,0 +1,22 @@
+/* Miscellaneous support functions for the CPU run-time library.
+ Copyright (C) 2018 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <http://www.gnu.org/licenses/>. */
+
+#if HAVE_TUNABLES
+# define CPU_RT_MISC
+# include <elf/dl-misc.c>
+#endif
diff --git a/cpu-rt-c/cpu-rt-support.h b/cpu-rt-c/cpu-rt-support.h
new file mode 100644
index 0000000000..5cb65e22d6
--- /dev/null
+++ b/cpu-rt-c/cpu-rt-support.h
@@ -0,0 +1,38 @@
+/* Support header file for the CPU run-time library.
+ This file is part of the GNU C Library.
+ Copyright (C) 2018 Free Software Foundation, Inc.
+
+ 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/>. */
+
+#ifndef _CPU_RT_SUPPORT_H
+#define _CPU_RT_SUPPORT_H 1
+
+/* It is safe to use the CPU run-time library with AT_SECURE and SUID
+ binaries. */
+#define __libc_enable_secure __redirect___libc_enable_secure
+#include <stdint.h>
+#include <unistd.h>
+#undef __libc_enable_secure
+#define __libc_enable_secure 0
+
+#ifdef CPU_RT_MISC
+# define _dl_strtoul __cpu_rt_strtoul
+#else
+extern uint64_t __cpu_rt_strtoul (const char *, char **)
+ attribute_hidden;
+# define _dl_strtoul(nptr, endptr) __cpu_rt_strtoul ((nptr), (endptr))
+#endif
+
+#endif
diff --git a/cpu-rt-c/cpu-rt-tunables.c b/cpu-rt-c/cpu-rt-tunables.c
new file mode 100644
index 0000000000..2a27054aa7
--- /dev/null
+++ b/cpu-rt-c/cpu-rt-tunables.c
@@ -0,0 +1,28 @@
+/* The tunable framework for the CPU run-time library.
+ This file is part of the GNU C Library.
+ Copyright (C) 2018 Free Software Foundation, Inc.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <http://www.gnu.org/licenses/>. */
+
+#if HAVE_TUNABLES
+# define CPU_RT_TUNABLES
+# include <cpu-rt-support.h>
+
+/* Make tunable_list writable. */
+# undef attribute_relro
+# define attribute_relro
+
+# include <elf/dl-tunables.c>
+#endif
diff --git a/cpu-rt-c/dl-tunables.h b/cpu-rt-c/dl-tunables.h
new file mode 100644
index 0000000000..051f7b3c17
--- /dev/null
+++ b/cpu-rt-c/dl-tunables.h
@@ -0,0 +1,57 @@
+/* The tunable framework for the CPU run-time library.
+ This file is part of the GNU C Library.
+ Copyright (C) 2018 Free Software Foundation, Inc.
+
+ 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/>. */
+
+#ifndef _CPU_RT_TUNABLES_H
+#define _CPU_RT_TUNABLES_H 1
+
+#ifdef CPU_RT_TUNABLES
+# define __tunables_init __cpu_rt_tunables_init
+# define __tunable_get_val __cpu_rt_tunable_get_val
+# define __tunable_set_val __cpu_rt_tunable_set_val
+#else
+# define __tunables_init __redirect___tunables_init
+# define __tunable_get_val __redirect___tunable_get_val
+# define __tunable_set_val __redirect___tunable_set_val
+#endif
+
+#include <elf/dl-tunables.h>
+
+#ifdef CPU_RT_TUNABLES
+extern void __cpu_rt_tunables_init (char **) attribute_hidden;
+extern void __cpu_rt_tunable_get_val (tunable_id_t, void *,
+ tunable_callback_t)
+ attribute_hidden;
+extern void __cpu_rt_tunable_set_val (tunable_id_t, void *)
+ attribute_hidden;
+#else
+# undef __tunables_init
+# define __tunables_init __cpu_rt_tunables_init
+# undef __tunable_get_val
+# define __tunable_get_val __cpu_rt_tunable_get_val
+# undef __tunable_set_val
+# define __tunable_set_val __cpu_rt_tunable_set_val
+
+extern __typeof (__redirect___tunables_init) __cpu_rt_tunables_init
+ attribute_hidden;
+extern __typeof (__redirect___tunable_get_val) __cpu_rt_tunable_get_val
+ attribute_hidden;
+extern __typeof (__redirect___tunable_set_val) __cpu_rt_tunable_set_val
+ attribute_hidden;
+#endif
+
+#endif
diff --git a/elf/dl-misc.c b/elf/dl-misc.c
index 2eb81eeb02..336bc7d61a 100644
--- a/elf/dl-misc.c
+++ b/elf/dl-misc.c
@@ -35,6 +35,7 @@
#include <dl-writev.h>
#include <not-cancel.h>
+#if !IS_IN (libcpu_rt_c)
/* Read the whole contents of FILE into new mmap'd space with given
protections. *SIZEP gets the size of the file. On error MAP_FAILED
is returned. */
@@ -357,6 +358,7 @@ _dl_higher_prime_number (unsigned long int n)
return *low;
}
+#endif
/* A stripped down strtoul-like implementation for very early use. It
does not set errno if the result is outside bounds because it may get
diff --git a/elf/dl-tunables.c b/elf/dl-tunables.c
index 4c9d36e398..6d3957ddb8 100644
--- a/elf/dl-tunables.c
+++ b/elf/dl-tunables.c
@@ -28,7 +28,7 @@
#include <ldsodefs.h>
#define TUNABLES_INTERNAL 1
-#include "dl-tunables.h"
+#include <dl-tunables.h>
#include <not-errno.h>
diff --git a/sysdeps/i386/dl-procinfo.c b/sysdeps/i386/dl-procinfo.c
index cd779e3078..954b214cac 100644
--- a/sysdeps/i386/dl-procinfo.c
+++ b/sysdeps/i386/dl-procinfo.c
@@ -42,23 +42,25 @@
#include <sysdeps/x86/dl-procinfo.c>
-#if !defined PROCINFO_DECL && defined SHARED
+#if !IS_IN (libcpu_rt_c)
+# if !defined PROCINFO_DECL && defined SHARED
._dl_x86_cap_flags
-#else
+# else
PROCINFO_CLASS const char _dl_x86_cap_flags[32][8]
-#endif
-#ifndef PROCINFO_DECL
+# endif
+# ifndef PROCINFO_DECL
= {
"fpu", "vme", "de", "pse", "tsc", "msr", "pae", "mce",
"cx8", "apic", "10", "sep", "mtrr", "pge", "mca", "cmov",
"pat", "pse36", "pn", "clflush", "20", "dts", "acpi", "mmx",
"fxsr", "sse", "sse2", "ss", "ht", "tm", "ia64", "pbe"
}
-#endif
-#if !defined SHARED || defined PROCINFO_DECL
+# endif
+# if !defined SHARED || defined PROCINFO_DECL
;
-#else
+# else
,
+# endif
#endif
#undef PROCINFO_DECL
diff --git a/sysdeps/unix/sysv/linux/i386/dl-procinfo.h b/sysdeps/unix/sysv/linux/i386/dl-procinfo.h
index b454367b72..3f931891e2 100644
--- a/sysdeps/unix/sysv/linux/i386/dl-procinfo.h
+++ b/sysdeps/unix/sysv/linux/i386/dl-procinfo.h
@@ -21,7 +21,8 @@
#define _DL_I386_PROCINFO_H 1
#include <sysdeps/x86/dl-procinfo.h>
-#undef _dl_procinfo
+#if !IS_IN (libcpu_rt_c)
+# undef _dl_procinfo
static inline int
__attribute__ ((unused))
_dl_procinfo (unsigned int type, unsigned long int word)
@@ -44,4 +45,5 @@ _dl_procinfo (unsigned int type, unsigned long int word)
return 0;
}
+# endif
#endif
diff --git a/sysdeps/x86/Makefile b/sysdeps/x86/Makefile
index 63ddaf03da..40fd14bd47 100644
--- a/sysdeps/x86/Makefile
+++ b/sysdeps/x86/Makefile
@@ -1,5 +1,14 @@
ifeq ($(subdir),cpu-rt-c)
-libcpu-rt-c-sysdep_routines += cacheinfo
+libcpu-rt-c-sysdep_routines += cacheinfo cpu-rt-misc cpu-rt-tunables
+
+tunables-type = $(addprefix TUNABLES_FRONTEND_,$(have-tunables))
+CPPFLAGS-cpu-rt-tunables.c += -DTUNABLES_FRONTEND=$(tunables-type)
+
+# Make sure that the compiler does not insert any library calls in tunables
+# code paths.
+ifeq (yes,$(have-loop-to-function))
+CFLAGS-cpu-rt-tunables.c += -fno-tree-loop-distribute-patterns
+endif
endif
ifeq ($(subdir),csu)
diff --git a/sysdeps/x86/cpu-features.c b/sysdeps/x86/cpu-features.c
index 0fc3674c4b..bd57dfab95 100644
--- a/sysdeps/x86/cpu-features.c
+++ b/sysdeps/x86/cpu-features.c
@@ -18,13 +18,19 @@
#include <cpuid.h>
#include <cpu-features.h>
-#include <dl-hwcap.h>
+#if !IS_IN (libcpu_rt_c)
+# include <dl-hwcap.h>
+#endif
#include <libc-pointer-arith.h>
#if HAVE_TUNABLES
# define TUNABLE_NAMESPACE tune
# include <unistd.h> /* Get STDOUT_FILENO for _dl_printf. */
-# include <elf/dl-tunables.h>
+# if IS_IN (libcpu_rt_c)
+# include <cpu-rt-c/dl-tunables.h>
+# else
+# include <elf/dl-tunables.h>
+# endif
extern void TUNABLE_CALLBACK (set_hwcaps) (tunable_val_t *)
attribute_hidden;
@@ -177,6 +183,20 @@ get_common_indeces (struct cpu_features *cpu_features,
}
}
+#if HAVE_TUNABLES
+static inline void
+init_cpu_features_tunables (struct cpu_features *cpu_features)
+{
+ TUNABLE_GET (hwcaps, tunable_val_t *, TUNABLE_CALLBACK (set_hwcaps));
+ cpu_features->non_temporal_threshold
+ = TUNABLE_GET (x86_non_temporal_threshold, long int, NULL);
+ cpu_features->data_cache_size
+ = TUNABLE_GET (x86_data_cache_size, long int, NULL);
+ cpu_features->shared_cache_size
+ = TUNABLE_GET (x86_shared_cache_size, long int, NULL);
+}
+#endif
+
static inline void
init_cpu_features (struct cpu_features *cpu_features)
{
@@ -378,24 +398,19 @@ no_cpuid:
cpu_features->model = model;
cpu_features->kind = kind;
-#if HAVE_TUNABLES
- TUNABLE_GET (hwcaps, tunable_val_t *, TUNABLE_CALLBACK (set_hwcaps));
- cpu_features->non_temporal_threshold
- = TUNABLE_GET (x86_non_temporal_threshold, long int, NULL);
- cpu_features->data_cache_size
- = TUNABLE_GET (x86_data_cache_size, long int, NULL);
- cpu_features->shared_cache_size
- = TUNABLE_GET (x86_shared_cache_size, long int, NULL);
-#endif
+#if !IS_IN (libcpu_rt_c)
+# if HAVE_TUNABLES
+ init_cpu_features_tunables (cpu_features);
+# endif
/* Reuse dl_platform, dl_hwcap and dl_hwcap_mask for x86. */
-#if !HAVE_TUNABLES && defined SHARED
+# if !HAVE_TUNABLES && defined SHARED
/* The glibc.tune.hwcap_mask tunable is initialized already, so no need to do
this. */
GLRO(dl_hwcap_mask) = HWCAP_IMPORTANT;
-#endif
+# endif
-#ifdef __x86_64__
+# ifdef __x86_64__
GLRO(dl_hwcap) = HWCAP_X86_64;
if (cpu_features->kind == arch_kind_intel)
{
@@ -431,7 +446,7 @@ no_cpuid:
if (platform != NULL)
GLRO(dl_platform) = platform;
}
-#else
+# else
GLRO(dl_hwcap) = 0;
if (CPU_FEATURES_CPU_P (cpu_features, SSE2))
GLRO(dl_hwcap) |= HWCAP_X86_SSE2;
@@ -440,5 +455,6 @@ no_cpuid:
GLRO(dl_platform) = "i686";
else if (CPU_FEATURES_ARCH_P (cpu_features, I586))
GLRO(dl_platform) = "i586";
+# endif
#endif
}
diff --git a/sysdeps/x86/cpu-features.h b/sysdeps/x86/cpu-features.h
index 624e681e96..a043f5d17d 100644
--- a/sysdeps/x86/cpu-features.h
+++ b/sysdeps/x86/cpu-features.h
@@ -161,8 +161,16 @@ extern const struct cpu_features *__get_cpu_features (void)
__attribute__ ((const));
# if defined (_LIBC) && !IS_IN (nonlib)
-/* Unused for x86. */
-# define INIT_ARCH()
+/* Call _cpu_rt_x86_init_cpu_features to support LD_PRELOAD of the CPU
+ run-time library on non-lazy binding shared objects. */
+# if IS_IN (libcpu_rt_c)
+extern void __cpu_rt_x86_init_cpu_features (void)
+ __attribute__ ((visibility ("hidden")));
+# define INIT_ARCH() __cpu_rt_x86_init_cpu_features ()
+# else
+/* Unused for x86 when not in the CPU run-time library. */
+# define INIT_ARCH()
+# endif
# define __get_cpu_features() (&GLRO(dl_x86_cpu_features))
# endif
diff --git a/sysdeps/x86/cpu-rt-misc.c b/sysdeps/x86/cpu-rt-misc.c
new file mode 100644
index 0000000000..83a95b51ad
--- /dev/null
+++ b/sysdeps/x86/cpu-rt-misc.c
@@ -0,0 +1,65 @@
+/* Miscellaneous support functions for the CPU run-time library. X86
+ version.
+ This file is part of the GNU C Library.
+ Copyright (C) 2018 Free Software Foundation, Inc.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <http://www.gnu.org/licenses/>. */
+
+#if HAVE_TUNABLES
+# include <cpu-rt-c/cpu-rt-misc.c>
+# include <cpu-tunables.c>
+#else
+# include <ldsodefs.h>
+#endif
+#include <cpu-features.c>
+#include <dl-procinfo.c>
+
+void
+__cpu_rt_x86_init_cpu_features (void)
+{
+ /* Since IFUNC selector in the CPU run-time library may be called before
+ dl_x86_cpu_features is initialized by DT_INIT_ARRAY with LD_PRELOAD
+ on non-lazy binding shared objects, __cpu_rt_x86_init_cpu_features
+ must be called from all IFUNC selectors. Since dl_x86_cpu_features
+ is hidden in the CPU run-time library, it can be accessed without
+ dynamic relocations and we can skip calling init_cpu_features if
+ not needed. */
+ if (GLRO(dl_x86_cpu_features).kind == arch_kind_unknown)
+ init_cpu_features (&GLRO(dl_x86_cpu_features));
+}
+
+#if HAVE_TUNABLES
+static void
+cpu_rt_init (int argc __attribute__ ((unused)),
+ char **argv __attribute__ ((unused)),
+ char **environ)
+{
+ __cpu_rt_x86_init_cpu_features ();
+ __tunables_init (environ);
+ init_cpu_features_tunables (&GLRO(dl_x86_cpu_features));
+}
+
+# ifdef SHARED
+# define INIT_SECTION ".init_array"
+# else
+# define INIT_SECTION ".preinit_array"
+# endif
+
+static void (*const cpu_rt_init_array []) (int, char **, char **)
+ __attribute__ ((used, section (INIT_SECTION), aligned (sizeof (void *)))) =
+{
+ &cpu_rt_init
+};
+#endif
diff --git a/sysdeps/x86/cpu-rt-support.h b/sysdeps/x86/cpu-rt-support.h
new file mode 100644
index 0000000000..77d1111050
--- /dev/null
+++ b/sysdeps/x86/cpu-rt-support.h
@@ -0,0 +1,21 @@
+/* Support header file for the CPU run-time library. X86 version.
+ This file is part of the GNU C Library.
+ Copyright (C) 2018 Free Software Foundation, Inc.
+
+ 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 <cpu-rt-c/cpu-rt-support.h>
+
+#define HWCAP_IMPORTANT 0
diff --git a/sysdeps/x86/cpu-tunables.c b/sysdeps/x86/cpu-tunables.c
index af761dcbbc..3d1c26577f 100644
--- a/sysdeps/x86/cpu-tunables.c
+++ b/sysdeps/x86/cpu-tunables.c
@@ -21,7 +21,11 @@
# include <stdbool.h>
# include <stdint.h>
# include <unistd.h> /* Get STDOUT_FILENO for _dl_printf. */
-# include <elf/dl-tunables.h>
+# if IS_IN (libcpu_rt_c)
+# include <cpu-rt-c/dl-tunables.h>
+# else
+# include <elf/dl-tunables.h>
+# endif
# include <string.h>
# include <cpu-features.h>
# include <ldsodefs.h>
diff --git a/sysdeps/x86/dl-procinfo.c b/sysdeps/x86/dl-procinfo.c
index 4b0538ede8..f623404a93 100644
--- a/sysdeps/x86/dl-procinfo.c
+++ b/sysdeps/x86/dl-procinfo.c
@@ -40,49 +40,56 @@
*/
#if !IS_IN (ldconfig)
-# if !defined PROCINFO_DECL && defined SHARED
+# if !defined PROCINFO_DECL && defined SHARED && !IS_IN (libcpu_rt_c)
._dl_x86_cpu_features
# else
+# if IS_IN (libcpu_rt_c)
+PROCINFO_CLASS struct cpu_features __cpu_rt_dl_x86_cpu_features
+ attribute_hidden
+# else
PROCINFO_CLASS struct cpu_features _dl_x86_cpu_features
+# endif
# endif
# ifndef PROCINFO_DECL
= { }
# endif
-# if !defined SHARED || defined PROCINFO_DECL
+# if !defined SHARED || defined PROCINFO_DECL || IS_IN (libcpu_rt_c)
;
# else
,
# endif
#endif
-#if !defined PROCINFO_DECL && defined SHARED
+#if !IS_IN (libcpu_rt_c)
+# if !defined PROCINFO_DECL && defined SHARED
._dl_x86_hwcap_flags
-#else
+# else
PROCINFO_CLASS const char _dl_x86_hwcap_flags[3][9]
-#endif
-#ifndef PROCINFO_DECL
+# endif
+# ifndef PROCINFO_DECL
= {
"sse2", "x86_64", "avx512_1"
}
-#endif
-#if !defined SHARED || defined PROCINFO_DECL
+# endif
+# if !defined SHARED || defined PROCINFO_DECL
;
-#else
+# else
,
-#endif
+# endif
-#if !defined PROCINFO_DECL && defined SHARED
+# if !defined PROCINFO_DECL && defined SHARED
._dl_x86_platforms
-#else
+# else
PROCINFO_CLASS const char _dl_x86_platforms[4][9]
-#endif
-#ifndef PROCINFO_DECL
+# endif
+# ifndef PROCINFO_DECL
= {
"i586", "i686", "haswell", "xeon_phi"
}
-#endif
-#if !defined SHARED || defined PROCINFO_DECL
+# endif
+# if !defined SHARED || defined PROCINFO_DECL
;
-#else
+# else
,
+# endif
#endif
diff --git a/sysdeps/x86/dl-procinfo.h b/sysdeps/x86/dl-procinfo.h
index 55cafc26e2..c2e6da9310 100644
--- a/sysdeps/x86/dl-procinfo.h
+++ b/sysdeps/x86/dl-procinfo.h
@@ -18,16 +18,18 @@
#ifndef _DL_PROCINFO_H
#define _DL_PROCINFO_H 1
-#include <ldsodefs.h>
-#include <dl-hwcap.h>
-#define _DL_HWCAP_COUNT HWCAP_COUNT
-#define _DL_PLATFORMS_COUNT HWCAP_PLATFORMS_COUNT
+#if !IS_IN (libcpu_rt_c)
+# include <ldsodefs.h>
+# include <dl-hwcap.h>
+
+# define _DL_HWCAP_COUNT HWCAP_COUNT
+# define _DL_PLATFORMS_COUNT HWCAP_PLATFORMS_COUNT
/* Start at 48 to reserve spaces for hardware capabilities. */
-#define _DL_FIRST_PLATFORM 48
+# define _DL_FIRST_PLATFORM 48
/* Mask to filter out platforms. */
-#define _DL_HWCAP_PLATFORM (((1ULL << _DL_PLATFORMS_COUNT) - 1) \
+# define _DL_HWCAP_PLATFORM (((1ULL << _DL_PLATFORMS_COUNT) - 1) \
<< _DL_FIRST_PLATFORM)
static inline int
@@ -44,5 +46,6 @@ _dl_string_platform (const char *str)
}
return -1;
};
+#endif /* !IS_IN (libcpu_rt) */
#endif /* dl-procinfo.h */
diff --git a/sysdeps/x86/ldsodefs.h b/sysdeps/x86/ldsodefs.h
index 0616215b7a..f0967f81b2 100644
--- a/sysdeps/x86/ldsodefs.h
+++ b/sysdeps/x86/ldsodefs.h
@@ -23,6 +23,16 @@
#include <elf.h>
#include <cpu-features.h>
+#if IS_IN (libcpu_rt_c)
+# define EXTERN extern
+# define GLRO(name) __cpu_rt_##name
+# define PROCINFO_DECL
+# ifndef PROCINFO_CLASS
+# define PROCINFO_CLASS EXTERN
+# endif
+# include <dl-procinfo.c>
+# include <cpu-rt-support.h>
+#else
struct La_i86_regs;
struct La_i86_retval;
struct La_x86_64_regs;
@@ -30,7 +40,7 @@ struct La_x86_64_retval;
struct La_x32_regs;
struct La_x32_retval;
-#define ARCH_PLTENTER_MEMBERS \
+# define ARCH_PLTENTER_MEMBERS \
Elf32_Addr (*i86_gnu_pltenter) (Elf32_Sym *, unsigned int, uintptr_t *, \
uintptr_t *, struct La_i86_regs *, \
unsigned int *, const char *name, \
@@ -45,7 +55,7 @@ struct La_x32_retval;
unsigned int *, const char *name, \
long int *framesizep)
-#define ARCH_PLTEXIT_MEMBERS \
+# define ARCH_PLTEXIT_MEMBERS \
unsigned int (*i86_gnu_pltexit) (Elf32_Sym *, unsigned int, uintptr_t *, \
uintptr_t *, const struct La_i86_regs *, \
struct La_i86_retval *, const char *); \
@@ -61,6 +71,7 @@ struct La_x32_retval;
struct La_x86_64_retval *, \
const char *)
-#include_next <ldsodefs.h>
+# include_next <ldsodefs.h>
+#endif /* !IS_IN (libcpu_rt_c) */
#endif
--
2.17.1
^ permalink raw reply [flat|nested] 33+ messages in thread
* [PATCH 07/20] libcpu-rt-c/x86-64: Add memrchr
2018-06-12 22:19 [PATCH 00/20] RFC: Add the CPU run-time library for C H.J. Lu
` (2 preceding siblings ...)
2018-06-12 22:19 ` [PATCH 08/20] libcpu-rt-c/x86-64: Add memset and wmemset H.J. Lu
@ 2018-06-12 22:19 ` H.J. Lu
2018-06-12 22:19 ` [PATCH 04/20] libcpu-rt-c/x86-64: Add memchr H.J. Lu
` (17 subsequent siblings)
21 siblings, 0 replies; 33+ messages in thread
From: H.J. Lu @ 2018-06-12 22:19 UTC (permalink / raw)
To: libc-alpha
* sysdeps/x86_64/Makefile (cpu-rt-c-routines): Add memrchr.
* sysdeps/x86_64/memrchr.S: Support libcpu-rt-c.
* sysdeps/x86_64/multiarch/memrchr-avx2.S: Likewise.
* sysdeps/x86_64/multiarch/memrchr-sse2.S: Likewise.
* sysdeps/x86_64/multiarch/memrchr.c: Likewise.
* sysdeps/x86_64/multiarch/Makefile
(libcpu-rt-c-sysdep_routines): Add memrchr-sse2 and
memrchr-avx2.
---
sysdeps/x86_64/Makefile | 2 +-
sysdeps/x86_64/memrchr.S | 6 ++++++
sysdeps/x86_64/multiarch/Makefile | 3 ++-
sysdeps/x86_64/multiarch/memrchr-avx2.S | 2 +-
sysdeps/x86_64/multiarch/memrchr-sse2.S | 2 +-
sysdeps/x86_64/multiarch/memrchr.c | 8 +++++++-
6 files changed, 18 insertions(+), 5 deletions(-)
diff --git a/sysdeps/x86_64/Makefile b/sysdeps/x86_64/Makefile
index 978cff6cba..da3264f27f 100644
--- a/sysdeps/x86_64/Makefile
+++ b/sysdeps/x86_64/Makefile
@@ -147,7 +147,7 @@ endif
endif
ifeq ($(subdir),cpu-rt-c)
-cpu-rt-c-routines += memchr memcmp memcpy memmove mempcpy
+cpu-rt-c-routines += memchr memcmp memcpy memmove mempcpy memrchr
# For the CPU run-time tests.
vpath %.c $(..)string
diff --git a/sysdeps/x86_64/memrchr.S b/sysdeps/x86_64/memrchr.S
index b8e3fa1d87..1488225145 100644
--- a/sysdeps/x86_64/memrchr.S
+++ b/sysdeps/x86_64/memrchr.S
@@ -20,6 +20,10 @@
#include <sysdep.h>
+#if !defined __memrchr && IS_IN (libcpu_rt_c)
+# define __memrchr memrchr
+#endif
+
.text
ENTRY (__memrchr)
movd %esi, %xmm1
@@ -377,4 +381,6 @@ L(length_less16_part2_return):
ret
END (__memrchr)
+#if !IS_IN (libcpu_rt_c)
weak_alias (__memrchr, memrchr)
+#endif
diff --git a/sysdeps/x86_64/multiarch/Makefile b/sysdeps/x86_64/multiarch/Makefile
index 8e86e44e33..582ca629d0 100644
--- a/sysdeps/x86_64/multiarch/Makefile
+++ b/sysdeps/x86_64/multiarch/Makefile
@@ -75,5 +75,6 @@ libcpu-rt-c-sysdep_routines += memchr-sse2 memchr-avx2 \
memmove-ssse3 memmove-ssse3-back \
memmove-avx-unaligned-erms \
memmove-avx512-unaligned-erms \
- memmove-avx512-no-vzeroupper
+ memmove-avx512-no-vzeroupper \
+ memrchr-sse2 memrchr-avx2
endif
diff --git a/sysdeps/x86_64/multiarch/memrchr-avx2.S b/sysdeps/x86_64/multiarch/memrchr-avx2.S
index b41a58bcba..ee4d461fe2 100644
--- a/sysdeps/x86_64/multiarch/memrchr-avx2.S
+++ b/sysdeps/x86_64/multiarch/memrchr-avx2.S
@@ -16,7 +16,7 @@
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
-#if IS_IN (libc)
+#if IS_IN (libc) || IS_IN (libcpu_rt_c)
# include <sysdep.h>
diff --git a/sysdeps/x86_64/multiarch/memrchr-sse2.S b/sysdeps/x86_64/multiarch/memrchr-sse2.S
index 12281663ec..f0d0668262 100644
--- a/sysdeps/x86_64/multiarch/memrchr-sse2.S
+++ b/sysdeps/x86_64/multiarch/memrchr-sse2.S
@@ -16,7 +16,7 @@
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
-#if IS_IN (libc)
+#if IS_IN (libc) || IS_IN (libcpu_rt_c)
# define __memrchr __memrchr_sse2
# undef weak_alias
diff --git a/sysdeps/x86_64/multiarch/memrchr.c b/sysdeps/x86_64/multiarch/memrchr.c
index d227fe7819..da4cff9e22 100644
--- a/sysdeps/x86_64/multiarch/memrchr.c
+++ b/sysdeps/x86_64/multiarch/memrchr.c
@@ -18,7 +18,7 @@
<http://www.gnu.org/licenses/>. */
/* Define multiple versions only for the definition in libc. */
-#if IS_IN (libc)
+#if IS_IN (libc) || IS_IN (libcpu_rt_c)
# define memrchr __redirect_memrchr
# include <string.h>
# undef memrchr
@@ -26,6 +26,12 @@
# define SYMBOL_NAME memrchr
# include "ifunc-avx2.h"
+# if IS_IN (libcpu_rt_c)
+# define __memrchr memrchr
+# endif
+
libc_ifunc_redirected (__redirect_memrchr, __memrchr, IFUNC_SELECTOR ());
+# if !IS_IN (libcpu_rt_c)
weak_alias (__memrchr, memrchr)
+# endif
#endif
--
2.17.1
^ permalink raw reply [flat|nested] 33+ messages in thread
* [PATCH 08/20] libcpu-rt-c/x86-64: Add memset and wmemset
2018-06-12 22:19 [PATCH 00/20] RFC: Add the CPU run-time library for C H.J. Lu
2018-06-12 22:19 ` [PATCH 02/20] libcpu-rt-c/x86: Add cacheinfo H.J. Lu
2018-06-12 22:19 ` [PATCH 03/20] libcpu-rt-c/x86: Add cpu-rt-tunables.c H.J. Lu
@ 2018-06-12 22:19 ` H.J. Lu
2018-06-12 22:19 ` [PATCH 07/20] libcpu-rt-c/x86-64: Add memrchr H.J. Lu
` (18 subsequent siblings)
21 siblings, 0 replies; 33+ messages in thread
From: H.J. Lu @ 2018-06-12 22:19 UTC (permalink / raw)
To: libc-alpha
* sysdeps/x86_64/Makefile (cpu-rt-c-routines): Add memset and
wmemset.
* sysdeps/x86_64/memset.S: Support libcpu-rt-c.
* sysdeps/x86_64/multiarch/memset-avx2-unaligned-erms.S:
Likewise.
* sysdeps/x86_64/multiarch/memset-avx512-no-vzeroupper.S:
Likewise.
* sysdeps/x86_64/multiarch/memset-avx512-unaligned-erms.S:
Likewise.
* sysdeps/x86_64/multiarch/memset-sse2-unaligned-erms.S:
Likewise.
* sysdeps/x86_64/multiarch/memset-vec-unaligned-erms.S:
Likewise.
* sysdeps/x86_64/multiarch/memset.c: Likewise.
* sysdeps/x86_64/multiarch/wmemset.c: Likewise.
* sysdeps/x86_64/multiarch/Makefile
(libcpu-rt-c-sysdep_routines): Add memset-sse2-unaligned-erms,
memset-avx2-unaligned-erms, memset-avx512-unaligned-erms and
memset-avx512-no-vzeroupper.
---
sysdeps/x86_64/Makefile | 6 ++++--
sysdeps/x86_64/memset.S | 6 +++++-
sysdeps/x86_64/multiarch/Makefile | 6 +++++-
.../multiarch/memset-avx2-unaligned-erms.S | 2 +-
.../multiarch/memset-avx512-no-vzeroupper.S | 4 ++--
.../multiarch/memset-avx512-unaligned-erms.S | 2 +-
.../multiarch/memset-sse2-unaligned-erms.S | 8 +++++---
.../multiarch/memset-vec-unaligned-erms.S | 17 ++++++++++++-----
sysdeps/x86_64/multiarch/memset.c | 4 ++--
sysdeps/x86_64/multiarch/wmemset.c | 10 ++++++++--
10 files changed, 45 insertions(+), 20 deletions(-)
diff --git a/sysdeps/x86_64/Makefile b/sysdeps/x86_64/Makefile
index da3264f27f..d5e4912074 100644
--- a/sysdeps/x86_64/Makefile
+++ b/sysdeps/x86_64/Makefile
@@ -147,10 +147,12 @@ endif
endif
ifeq ($(subdir),cpu-rt-c)
-cpu-rt-c-routines += memchr memcmp memcpy memmove mempcpy memrchr
+cpu-rt-c-routines += memchr memcmp memcpy memmove mempcpy memrchr \
+ memset \
+ wmemset
# For the CPU run-time tests.
-vpath %.c $(..)string
+vpath %.c $(..)string $(..)wcsmbs
endif
ifeq ($(subdir),csu)
diff --git a/sysdeps/x86_64/memset.S b/sysdeps/x86_64/memset.S
index b342679576..4036de674d 100644
--- a/sysdeps/x86_64/memset.S
+++ b/sysdeps/x86_64/memset.S
@@ -47,7 +47,11 @@
#ifndef WMEMSET_SYMBOL
# define WMEMSET_CHK_SYMBOL(p,s) p
-# define WMEMSET_SYMBOL(p,s) __wmemset
+# if IS_IN (libcpu_rt_c)
+# define WMEMSET_SYMBOL(p,s) wmemset
+# else
+# define WMEMSET_SYMBOL(p,s) __wmemset
+# endif
#endif
#include "multiarch/memset-vec-unaligned-erms.S"
diff --git a/sysdeps/x86_64/multiarch/Makefile b/sysdeps/x86_64/multiarch/Makefile
index 582ca629d0..9262251b2c 100644
--- a/sysdeps/x86_64/multiarch/Makefile
+++ b/sysdeps/x86_64/multiarch/Makefile
@@ -76,5 +76,9 @@ libcpu-rt-c-sysdep_routines += memchr-sse2 memchr-avx2 \
memmove-avx-unaligned-erms \
memmove-avx512-unaligned-erms \
memmove-avx512-no-vzeroupper \
- memrchr-sse2 memrchr-avx2
+ memrchr-sse2 memrchr-avx2 \
+ memset-sse2-unaligned-erms \
+ memset-avx2-unaligned-erms \
+ memset-avx512-unaligned-erms \
+ memset-avx512-no-vzeroupper
endif
diff --git a/sysdeps/x86_64/multiarch/memset-avx2-unaligned-erms.S b/sysdeps/x86_64/multiarch/memset-avx2-unaligned-erms.S
index 7ab3d89849..3943970235 100644
--- a/sysdeps/x86_64/multiarch/memset-avx2-unaligned-erms.S
+++ b/sysdeps/x86_64/multiarch/memset-avx2-unaligned-erms.S
@@ -1,4 +1,4 @@
-#if IS_IN (libc)
+#if IS_IN (libc) || IS_IN (libcpu_rt_c)
# define VEC_SIZE 32
# define VEC(i) ymm##i
# define VMOVU vmovdqu
diff --git a/sysdeps/x86_64/multiarch/memset-avx512-no-vzeroupper.S b/sysdeps/x86_64/multiarch/memset-avx512-no-vzeroupper.S
index 689cc1199c..d1bf841c56 100644
--- a/sysdeps/x86_64/multiarch/memset-avx512-no-vzeroupper.S
+++ b/sysdeps/x86_64/multiarch/memset-avx512-no-vzeroupper.S
@@ -18,7 +18,7 @@
#include <sysdep.h>
-#if IS_IN (libc)
+#if IS_IN (libc) || IS_IN (libcpu_rt_c)
#include "asm-syntax.h"
#ifndef MEMSET
@@ -27,7 +27,7 @@
#endif
.section .text.avx512,"ax",@progbits
-#if defined PIC
+#if defined PIC && IS_IN (libc)
ENTRY (MEMSET_CHK)
cmpq %rdx, %rcx
jb HIDDEN_JUMPTARGET (__chk_fail)
diff --git a/sysdeps/x86_64/multiarch/memset-avx512-unaligned-erms.S b/sysdeps/x86_64/multiarch/memset-avx512-unaligned-erms.S
index 0783979ca5..dcddf27573 100644
--- a/sysdeps/x86_64/multiarch/memset-avx512-unaligned-erms.S
+++ b/sysdeps/x86_64/multiarch/memset-avx512-unaligned-erms.S
@@ -1,4 +1,4 @@
-#if IS_IN (libc)
+#if IS_IN (libc) || IS_IN (libcpu_rt_c)
# define VEC_SIZE 64
# define VEC(i) zmm##i
# define VMOVU vmovdqu64
diff --git a/sysdeps/x86_64/multiarch/memset-sse2-unaligned-erms.S b/sysdeps/x86_64/multiarch/memset-sse2-unaligned-erms.S
index be6671759b..359cfb63e3 100644
--- a/sysdeps/x86_64/multiarch/memset-sse2-unaligned-erms.S
+++ b/sysdeps/x86_64/multiarch/memset-sse2-unaligned-erms.S
@@ -21,7 +21,7 @@
#include <shlib-compat.h>
#include <init-arch.h>
-#if IS_IN (libc)
+#if IS_IN (libc) || IS_IN (libcpu_rt_c)
# define MEMSET_SYMBOL(p,s) p##_sse2_##s
# define WMEMSET_SYMBOL(p,s) p##_sse2_##s
@@ -30,9 +30,11 @@
# define libc_hidden_builtin_def(name)
# endif
-# undef weak_alias
-# define weak_alias(original, alias) \
+# if !IS_IN (libcpu_rt_c)
+# undef weak_alias
+# define weak_alias(original, alias) \
.weak bzero; bzero = __bzero
+# endif
# undef strong_alias
# define strong_alias(ignored1, ignored2)
diff --git a/sysdeps/x86_64/multiarch/memset-vec-unaligned-erms.S b/sysdeps/x86_64/multiarch/memset-vec-unaligned-erms.S
index dc9cb88b37..08a831aad2 100644
--- a/sysdeps/x86_64/multiarch/memset-vec-unaligned-erms.S
+++ b/sysdeps/x86_64/multiarch/memset-vec-unaligned-erms.S
@@ -73,18 +73,23 @@
#endif
.section SECTION(.text),"ax",@progbits
-#if VEC_SIZE == 16 && IS_IN (libc)
+#if VEC_SIZE == 16 && (IS_IN (libc) || IS_IN (libcpu_rt_c))
+# if IS_IN (libcpu_rt_c)
+# define __bzero bzero
+# endif
ENTRY (__bzero)
movq %rdi, %rax /* Set return value. */
movq %rsi, %rdx /* Set n. */
pxor %xmm0, %xmm0
jmp L(entry_from_bzero)
END (__bzero)
+# if !IS_IN (libcpu_rt_c)
weak_alias (__bzero, bzero)
+# endif
#endif
-#if IS_IN (libc)
-# if defined SHARED
+#if IS_IN (libc) || IS_IN (libcpu_rt_c)
+# if defined SHARED && IS_IN (libc)
ENTRY_CHK (WMEMSET_CHK_SYMBOL (__wmemset_chk, unaligned))
cmpq %rdx, %rcx
jb HIDDEN_JUMPTARGET (__chk_fail)
@@ -117,14 +122,16 @@ L(entry_from_bzero):
VMOVU %VEC(0), (%rdi)
VZEROUPPER
ret
-#if defined USE_MULTIARCH && IS_IN (libc)
+#if defined USE_MULTIARCH && (IS_IN (libc) || IS_IN (libcpu_rt_c))
END (MEMSET_SYMBOL (__memset, unaligned))
-# if VEC_SIZE == 16
+# if VEC_SIZE == 16 && (IS_IN (libc) || IS_IN (libcpu_rt_c))
+# if IS_IN (libc)
ENTRY (__memset_chk_erms)
cmpq %rdx, %rcx
jb HIDDEN_JUMPTARGET (__chk_fail)
END (__memset_chk_erms)
+# endif
/* Only used to measure performance of REP STOSB. */
ENTRY (__memset_erms)
diff --git a/sysdeps/x86_64/multiarch/memset.c b/sysdeps/x86_64/multiarch/memset.c
index 064841d5fc..8a17a76006 100644
--- a/sysdeps/x86_64/multiarch/memset.c
+++ b/sysdeps/x86_64/multiarch/memset.c
@@ -18,7 +18,7 @@
<http://www.gnu.org/licenses/>. */
/* Define multiple versions only for the definition in libc. */
-#if IS_IN (libc)
+#if IS_IN (libc) || IS_IN (libcpu_rt_c)
# define memset __redirect_memset
# include <string.h>
# undef memset
@@ -28,7 +28,7 @@
libc_ifunc_redirected (__redirect_memset, memset, IFUNC_SELECTOR ());
-# ifdef SHARED
+# if defined SHARED && !IS_IN (libcpu_rt_c)
__hidden_ver1 (memset, __GI_memset, __redirect_memset)
__attribute__ ((visibility ("hidden")));
# endif
diff --git a/sysdeps/x86_64/multiarch/wmemset.c b/sysdeps/x86_64/multiarch/wmemset.c
index 9fee77ea81..a382bdbad1 100644
--- a/sysdeps/x86_64/multiarch/wmemset.c
+++ b/sysdeps/x86_64/multiarch/wmemset.c
@@ -18,7 +18,7 @@
<http://www.gnu.org/licenses/>. */
/* Define multiple versions only for the definition in libc. */
-#if IS_IN (libc)
+#if IS_IN (libc) || IS_IN (libcpu_rt_c)
# define wmemset __redirect_wmemset
# define __wmemset __redirect___wmemset
# include <wchar.h>
@@ -28,13 +28,19 @@
# define SYMBOL_NAME wmemset
# include "ifunc-wmemset.h"
+# if IS_IN (libcpu_rt_c)
+# define __wmemset wmemset
+# endif
+
libc_ifunc_redirected (__redirect_wmemset, __wmemset, IFUNC_SELECTOR ());
+# if !IS_IN (libcpu_rt_c)
weak_alias (__wmemset, wmemset)
-# ifdef SHARED
+# ifdef SHARED
__hidden_ver1 (__wmemset, __GI___wmemset, __redirect___wmemset)
__attribute__ ((visibility ("hidden")));
__hidden_ver1 (wmemset, __GI_wmemset, __redirect_wmemset)
__attribute__ ((visibility ("hidden")));
+# endif
# endif
#endif
--
2.17.1
^ permalink raw reply [flat|nested] 33+ messages in thread
* [PATCH 04/20] libcpu-rt-c/x86-64: Add memchr
2018-06-12 22:19 [PATCH 00/20] RFC: Add the CPU run-time library for C H.J. Lu
` (3 preceding siblings ...)
2018-06-12 22:19 ` [PATCH 07/20] libcpu-rt-c/x86-64: Add memrchr H.J. Lu
@ 2018-06-12 22:19 ` H.J. Lu
2018-06-12 22:20 ` [PATCH 13/20] libcpu-rt-c/x86-64: Add strcpy H.J. Lu
` (16 subsequent siblings)
21 siblings, 0 replies; 33+ messages in thread
From: H.J. Lu @ 2018-06-12 22:19 UTC (permalink / raw)
To: libc-alpha
* sysdeps/x86_64/Makefile (cpu-rt-c-routines): Add memchr.
(vpath %.c $(..)string): New.
* sysdeps/x86_64/memchr.S: Don't define alias __memchr in
libcpu-rt-c.
* sysdeps/x86_64/multiarch/Makefile
(libcpu-rt-c-sysdep_routines): Add memchr-sse2 and memchr-avx2.
* sysdeps/x86_64/multiarch/memchr-avx2.S: Support libcpu-rt-c.
* sysdeps/x86_64/multiarch/memchr-sse2.S: Likewise.
* sysdeps/x86_64/multiarch/memchr.c: Likewise.
---
sysdeps/x86_64/Makefile | 7 +++++++
sysdeps/x86_64/memchr.S | 2 +-
sysdeps/x86_64/multiarch/Makefile | 4 ++++
sysdeps/x86_64/multiarch/memchr-avx2.S | 2 +-
sysdeps/x86_64/multiarch/memchr-sse2.S | 2 +-
sysdeps/x86_64/multiarch/memchr.c | 6 ++++--
6 files changed, 18 insertions(+), 5 deletions(-)
diff --git a/sysdeps/x86_64/Makefile b/sysdeps/x86_64/Makefile
index 9f1562f1b2..d8f6d83d88 100644
--- a/sysdeps/x86_64/Makefile
+++ b/sysdeps/x86_64/Makefile
@@ -146,6 +146,13 @@ CFLAGS-tst-avx512mod.c += $(AVX512-CFLAGS)
endif
endif
+ifeq ($(subdir),cpu-rt-c)
+cpu-rt-c-routines += memchr
+
+# For the CPU run-time tests.
+vpath %.c $(..)string
+endif
+
ifeq ($(subdir),csu)
gen-as-const-headers += tlsdesc.sym rtld-offsets.sym
endif
diff --git a/sysdeps/x86_64/memchr.S b/sysdeps/x86_64/memchr.S
index feef5d4f24..2a17b01733 100644
--- a/sysdeps/x86_64/memchr.S
+++ b/sysdeps/x86_64/memchr.S
@@ -324,7 +324,7 @@ L(return_null):
ret
END(MEMCHR)
-#ifndef USE_AS_WMEMCHR
+#if !defined USE_AS_WMEMCHR && !IS_IN (libcpu_rt_c)
strong_alias (memchr, __memchr)
libc_hidden_builtin_def(memchr)
#endif
diff --git a/sysdeps/x86_64/multiarch/Makefile b/sysdeps/x86_64/multiarch/Makefile
index bb5e970735..2c43179b0f 100644
--- a/sysdeps/x86_64/multiarch/Makefile
+++ b/sysdeps/x86_64/multiarch/Makefile
@@ -65,3 +65,7 @@ sysdep_routines += memcpy_chk-nonshared mempcpy_chk-nonshared \
memmove_chk-nonshared memset_chk-nonshared \
wmemset_chk-nonshared
endif
+
+ifeq ($(subdir),cpu-rt-c)
+libcpu-rt-c-sysdep_routines += memchr-sse2 memchr-avx2
+endif
diff --git a/sysdeps/x86_64/multiarch/memchr-avx2.S b/sysdeps/x86_64/multiarch/memchr-avx2.S
index 5f5e772554..15710b69f6 100644
--- a/sysdeps/x86_64/multiarch/memchr-avx2.S
+++ b/sysdeps/x86_64/multiarch/memchr-avx2.S
@@ -16,7 +16,7 @@
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
-#if IS_IN (libc)
+#if IS_IN (libc) || IS_IN (libcpu_rt_c)
# include <sysdep.h>
diff --git a/sysdeps/x86_64/multiarch/memchr-sse2.S b/sysdeps/x86_64/multiarch/memchr-sse2.S
index 8a5e7fd1c5..6f299d5119 100644
--- a/sysdeps/x86_64/multiarch/memchr-sse2.S
+++ b/sysdeps/x86_64/multiarch/memchr-sse2.S
@@ -16,7 +16,7 @@
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
-#if IS_IN (libc)
+#if IS_IN (libc) || IS_IN (libcpu_rt_c)
# define memchr __memchr_sse2
# undef strong_alias
diff --git a/sysdeps/x86_64/multiarch/memchr.c b/sysdeps/x86_64/multiarch/memchr.c
index 016f57846a..25927f72ed 100644
--- a/sysdeps/x86_64/multiarch/memchr.c
+++ b/sysdeps/x86_64/multiarch/memchr.c
@@ -18,7 +18,7 @@
<http://www.gnu.org/licenses/>. */
/* Define multiple versions only for the definition in libc. */
-#if IS_IN (libc)
+#if IS_IN (libc) || IS_IN (libcpu_rt_c)
# define memchr __redirect_memchr
# include <string.h>
# undef memchr
@@ -27,9 +27,11 @@
# include "ifunc-avx2.h"
libc_ifunc_redirected (__redirect_memchr, memchr, IFUNC_SELECTOR ());
+# if !IS_IN (libcpu_rt_c)
strong_alias (memchr, __memchr)
-# ifdef SHARED
+# ifdef SHARED
__hidden_ver1 (memchr, __GI_memchr, __redirect_memchr)
__attribute__((visibility ("hidden")));
+# endif
# endif
#endif
--
2.17.1
^ permalink raw reply [flat|nested] 33+ messages in thread
* [PATCH 02/20] libcpu-rt-c/x86: Add cacheinfo
2018-06-12 22:19 [PATCH 00/20] RFC: Add the CPU run-time library for C H.J. Lu
@ 2018-06-12 22:19 ` H.J. Lu
2018-06-12 22:19 ` [PATCH 03/20] libcpu-rt-c/x86: Add cpu-rt-tunables.c H.J. Lu
` (20 subsequent siblings)
21 siblings, 0 replies; 33+ messages in thread
From: H.J. Lu @ 2018-06-12 22:19 UTC (permalink / raw)
To: libc-alpha
Add cacheinfo to libcpu-rt-c, excluding __cache_sysconf. Don't drag
in <assert.h> in libcpu-rt-c. We want to keep libcpu-rt-c as lean as
possible and still have access to CPU cache information.
* sysdeps/x86/Makefile (libcpu-rt-c-sysdep_routines): Add
cacheinfo.
* sysdeps/x86/cacheinfo.c: Include <assert.h> only for libc.
(assert): [IS_IN (libcpu_rt_c)]: New function.
(__cache_sysconf): Make it libc only.
---
sysdeps/x86/Makefile | 4 ++++
sysdeps/x86/cacheinfo.c | 19 +++++++++++++++++--
2 files changed, 21 insertions(+), 2 deletions(-)
diff --git a/sysdeps/x86/Makefile b/sysdeps/x86/Makefile
index d25d6f0ae4..63ddaf03da 100644
--- a/sysdeps/x86/Makefile
+++ b/sysdeps/x86/Makefile
@@ -1,3 +1,7 @@
+ifeq ($(subdir),cpu-rt-c)
+libcpu-rt-c-sysdep_routines += cacheinfo
+endif
+
ifeq ($(subdir),csu)
gen-as-const-headers += cpu-features-offsets.sym
endif
diff --git a/sysdeps/x86/cacheinfo.c b/sysdeps/x86/cacheinfo.c
index b9444ddd52..b23d2791b4 100644
--- a/sysdeps/x86/cacheinfo.c
+++ b/sysdeps/x86/cacheinfo.c
@@ -16,9 +16,22 @@
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
-#if IS_IN (libc)
+#if IS_IN (libc) || IS_IN (libcpu_rt_c)
-#include <assert.h>
+#if IS_IN (libcpu_rt_c)
+# include <abort-instr.h>
+
+__attribute__ ((__noreturn__))
+static inline void
+assert (int expr __attribute__ ((unused)))
+{
+ /* This shouldn't happen in the CPU run-time library. */
+ ABORT_INSTRUCTION;
+ __builtin_unreachable ();
+}
+#else
+# include <assert.h>
+#endif
#include <stdbool.h>
#include <stdlib.h>
#include <unistd.h>
@@ -436,6 +449,7 @@ handle_amd (int name)
}
+# if IS_IN (libc)
/* Get the value of the system variable NAME. */
long int
attribute_hidden
@@ -454,6 +468,7 @@ __cache_sysconf (int name)
/* CPU not known, we have no information. */
return 0;
}
+# endif
/* Data cache size for use in memory and string routines, typically
--
2.17.1
^ permalink raw reply [flat|nested] 33+ messages in thread
* [PATCH 12/20] libcpu-rt-c/x86-64: Add strcmp
2018-06-12 22:19 [PATCH 00/20] RFC: Add the CPU run-time library for C H.J. Lu
` (15 preceding siblings ...)
2018-06-12 22:20 ` [PATCH 01/20] Initial empty CPU run-time library for C: libcpu-rt-c H.J. Lu
@ 2018-06-12 22:20 ` H.J. Lu
2018-06-12 22:20 ` [PATCH 15/20] libcpu-rt-c/x86-64: Add strcat H.J. Lu
` (4 subsequent siblings)
21 siblings, 0 replies; 33+ messages in thread
From: H.J. Lu @ 2018-06-12 22:20 UTC (permalink / raw)
To: libc-alpha
* sysdeps/x86_64/Makefile (cpu-rt-c-routines): Add strcmp.
* sysdeps/x86_64/multiarch/Makefile
(libcpu-rt-c-sysdep_routines): Add strcmp-sse2.
strcmp-sse2-unaligned, strcmp-ssse3, strcmp-sse4_2 and
strcmp-avx2.
* sysdeps/x86_64/multiarch/strcmp-avx2.S: Support libcpu-rt-c.
* sysdeps/x86_64/multiarch/strcmp-sse2-unaligned.S: Likewise.
* sysdeps/x86_64/multiarch/strcmp-sse2.S: Likewise.
* sysdeps/x86_64/multiarch/strcmp-ssse3.S: Likewise.
* sysdeps/x86_64/multiarch/strcmp.c: Likewise.
---
sysdeps/x86_64/Makefile | 2 +-
sysdeps/x86_64/multiarch/Makefile | 4 +++-
sysdeps/x86_64/multiarch/strcmp-avx2.S | 2 +-
sysdeps/x86_64/multiarch/strcmp-sse2-unaligned.S | 2 +-
sysdeps/x86_64/multiarch/strcmp-sse2.S | 2 +-
sysdeps/x86_64/multiarch/strcmp-ssse3.S | 2 +-
sysdeps/x86_64/multiarch/strcmp.c | 4 ++--
7 files changed, 10 insertions(+), 8 deletions(-)
diff --git a/sysdeps/x86_64/Makefile b/sysdeps/x86_64/Makefile
index 6c8adb898a..dbd2d5e6df 100644
--- a/sysdeps/x86_64/Makefile
+++ b/sysdeps/x86_64/Makefile
@@ -148,7 +148,7 @@ endif
ifeq ($(subdir),cpu-rt-c)
cpu-rt-c-routines += memchr memcmp memcpy memmove mempcpy memrchr \
- memset strchr \
+ memset strchr strcmp \
wmemset
# For the CPU run-time tests.
diff --git a/sysdeps/x86_64/multiarch/Makefile b/sysdeps/x86_64/multiarch/Makefile
index b06c1555df..c1cf7d89fa 100644
--- a/sysdeps/x86_64/multiarch/Makefile
+++ b/sysdeps/x86_64/multiarch/Makefile
@@ -82,5 +82,7 @@ libcpu-rt-c-sysdep_routines += memchr-sse2 memchr-avx2 \
memset-avx512-unaligned-erms \
memset-avx512-no-vzeroupper \
strchr-sse2-no-bsf strchr-sse2 \
- strchr-avx2
+ strchr-avx2 strcmp-sse2 \
+ strcmp-sse2-unaligned strcmp-ssse3 \
+ strcmp-sse4_2 strcmp-avx2
endif
diff --git a/sysdeps/x86_64/multiarch/strcmp-avx2.S b/sysdeps/x86_64/multiarch/strcmp-avx2.S
index e8397f3b05..29ccda4502 100644
--- a/sysdeps/x86_64/multiarch/strcmp-avx2.S
+++ b/sysdeps/x86_64/multiarch/strcmp-avx2.S
@@ -16,7 +16,7 @@
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
-#if IS_IN (libc)
+#if IS_IN (libc) || IS_IN (libcpu_rt_c)
# include <sysdep.h>
diff --git a/sysdeps/x86_64/multiarch/strcmp-sse2-unaligned.S b/sysdeps/x86_64/multiarch/strcmp-sse2-unaligned.S
index a9b6267d15..acf8e0caf9 100644
--- a/sysdeps/x86_64/multiarch/strcmp-sse2-unaligned.S
+++ b/sysdeps/x86_64/multiarch/strcmp-sse2-unaligned.S
@@ -16,7 +16,7 @@
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
-#if IS_IN (libc)
+#if IS_IN (libc) || IS_IN (libcpu_rt_c)
#include "sysdep.h"
diff --git a/sysdeps/x86_64/multiarch/strcmp-sse2.S b/sysdeps/x86_64/multiarch/strcmp-sse2.S
index d173ded8c0..f1a62b207f 100644
--- a/sysdeps/x86_64/multiarch/strcmp-sse2.S
+++ b/sysdeps/x86_64/multiarch/strcmp-sse2.S
@@ -16,7 +16,7 @@
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
-#if IS_IN (libc)
+#if IS_IN (libc) || IS_IN (libcpu_rt_c)
# include <sysdep.h>
# define STRCMP __strcmp_sse2
diff --git a/sysdeps/x86_64/multiarch/strcmp-ssse3.S b/sysdeps/x86_64/multiarch/strcmp-ssse3.S
index 1b7fa33c91..1d697a4bd4 100644
--- a/sysdeps/x86_64/multiarch/strcmp-ssse3.S
+++ b/sysdeps/x86_64/multiarch/strcmp-ssse3.S
@@ -1,4 +1,4 @@
-#if IS_IN (libc)
+#if IS_IN (libc) || IS_IN (libcpu_rt_c)
# define USE_SSSE3 1
# define STRCMP __strcmp_ssse3
# include "../strcmp.S"
diff --git a/sysdeps/x86_64/multiarch/strcmp.c b/sysdeps/x86_64/multiarch/strcmp.c
index b903e418df..13370d2ca0 100644
--- a/sysdeps/x86_64/multiarch/strcmp.c
+++ b/sysdeps/x86_64/multiarch/strcmp.c
@@ -18,7 +18,7 @@
<http://www.gnu.org/licenses/>. */
/* Define multiple versions only for the definition in libc. */
-#if IS_IN (libc)
+#if IS_IN (libc) || IS_IN (libcpu_rt_c)
# define strcmp __redirect_strcmp
# include <string.h>
# undef strcmp
@@ -52,7 +52,7 @@ IFUNC_SELECTOR (void)
libc_ifunc_redirected (__redirect_strcmp, strcmp, IFUNC_SELECTOR ());
-# ifdef SHARED
+# if defined SHARED && !IS_IN (libcpu_rt_c)
__hidden_ver1 (strcmp, __GI_strcmp, __redirect_strcmp)
__attribute__ ((visibility ("hidden")));
# endif
--
2.17.1
^ permalink raw reply [flat|nested] 33+ messages in thread
* [PATCH 09/20] libcpu-rt-c/i386: Add memcmp
2018-06-12 22:19 [PATCH 00/20] RFC: Add the CPU run-time library for C H.J. Lu
` (10 preceding siblings ...)
2018-06-12 22:20 ` [PATCH 14/20] libcpu-rt-c/x86-64: Add strlen H.J. Lu
@ 2018-06-12 22:20 ` H.J. Lu
2018-06-12 22:20 ` [PATCH 05/20] libcpu-rt-c/x86-64: " H.J. Lu
` (9 subsequent siblings)
21 siblings, 0 replies; 33+ messages in thread
From: H.J. Lu @ 2018-06-12 22:20 UTC (permalink / raw)
To: libc-alpha
Add memcmp to i386 libcpu-rt-c so that libcpu-rt-c with tunables can be
built for i386.
* sysdeps/i386/Makefile (cpu-rt-c-routines): Add memcmp.
(vpath %.c $(..)string): New.
* sysdeps/i386/i686/multiarch/Makefile
(libcpu-rt-c-sysdep_routines): Add memcmp-ia32, memcmp-ssse3
and memcmp-sse4.
* sysdeps/i386/i686/multiarch/memcmp-ia32.S: Support libcpu-rt-c.
* sysdeps/i386/i686/multiarch/memcmp-sse4.S: Likewise.
* sysdeps/i386/i686/multiarch/memcmp-ssse3.S: Likewise.
* sysdeps/i386/i686/multiarch/memcmp.c: Likewise.
---
sysdeps/i386/Makefile | 7 +++++++
sysdeps/i386/i686/multiarch/Makefile | 4 ++++
sysdeps/i386/i686/multiarch/memcmp-ia32.S | 8 ++++++--
sysdeps/i386/i686/multiarch/memcmp-sse4.S | 2 +-
sysdeps/i386/i686/multiarch/memcmp-ssse3.S | 2 +-
sysdeps/i386/i686/multiarch/memcmp.c | 2 +-
6 files changed, 20 insertions(+), 5 deletions(-)
diff --git a/sysdeps/i386/Makefile b/sysdeps/i386/Makefile
index 1682394e76..313c88d164 100644
--- a/sysdeps/i386/Makefile
+++ b/sysdeps/i386/Makefile
@@ -40,6 +40,13 @@ $(objpfx)tst-audit3.out: $(objpfx)tst-auditmod3b.so
tst-audit3-ENV = LD_AUDIT=$(objpfx)tst-auditmod3b.so
endif
+ifeq ($(subdir),cpu-rt-c)
+cpu-rt-c-routines += memcmp
+
+# For the CPU run-time tests.
+vpath %.c $(..)string
+endif
+
ifeq ($(subdir),csu)
gen-as-const-headers += tlsdesc.sym
endif
diff --git a/sysdeps/i386/i686/multiarch/Makefile b/sysdeps/i386/i686/multiarch/Makefile
index bf75a9947f..7cc686a8a2 100644
--- a/sysdeps/i386/i686/multiarch/Makefile
+++ b/sysdeps/i386/i686/multiarch/Makefile
@@ -53,3 +53,7 @@ ifeq ($(subdir),debug)
sysdep_routines += memcpy_chk-nonshared mempcpy_chk-nonshared \
memmove_chk-nonshared memset_chk-nonshared
endif
+
+ifeq ($(subdir),cpu-rt-c)
+libcpu-rt-c-sysdep_routines += memcmp-ia32 memcmp-ssse3 memcmp-sse4
+endif
diff --git a/sysdeps/i386/i686/multiarch/memcmp-ia32.S b/sysdeps/i386/i686/multiarch/memcmp-ia32.S
index b468350474..8dbf6ac640 100644
--- a/sysdeps/i386/i686/multiarch/memcmp-ia32.S
+++ b/sysdeps/i386/i686/multiarch/memcmp-ia32.S
@@ -16,7 +16,7 @@
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
-#if IS_IN (libc)
+#if IS_IN (libc) || IS_IN (libcpu_rt_c)
# define memcmp __memcmp_ia32
# ifdef SHARED
@@ -24,8 +24,12 @@
/* IFUNC doesn't work with the hidden functions in shared library since
they will be called without setting up EBX needed for PLT which is
used by IFUNC. */
-# define libc_hidden_builtin_def(name) \
+# if IS_IN (libcpu_rt_c)
+# define libc_hidden_builtin_def(name)
+# else
+# define libc_hidden_builtin_def(name) \
.globl __GI_memcmp; __GI_memcmp = memcmp
+# endif
# endif
# undef weak_alias
diff --git a/sysdeps/i386/i686/multiarch/memcmp-sse4.S b/sysdeps/i386/i686/multiarch/memcmp-sse4.S
index be37108987..55c37e5717 100644
--- a/sysdeps/i386/i686/multiarch/memcmp-sse4.S
+++ b/sysdeps/i386/i686/multiarch/memcmp-sse4.S
@@ -17,7 +17,7 @@
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
-#if IS_IN (libc)
+#if IS_IN (libc) || IS_IN (libcpu_rt_c)
# include <sysdep.h>
diff --git a/sysdeps/i386/i686/multiarch/memcmp-ssse3.S b/sysdeps/i386/i686/multiarch/memcmp-ssse3.S
index 31a0b2908e..088eb2b4ff 100644
--- a/sysdeps/i386/i686/multiarch/memcmp-ssse3.S
+++ b/sysdeps/i386/i686/multiarch/memcmp-ssse3.S
@@ -17,7 +17,7 @@
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
-#if IS_IN (libc)
+#if IS_IN (libc) || IS_IN (libcpu_rt_c)
# include <sysdep.h>
diff --git a/sysdeps/i386/i686/multiarch/memcmp.c b/sysdeps/i386/i686/multiarch/memcmp.c
index dd5a93a26c..58687e7603 100644
--- a/sysdeps/i386/i686/multiarch/memcmp.c
+++ b/sysdeps/i386/i686/multiarch/memcmp.c
@@ -18,7 +18,7 @@
<http://www.gnu.org/licenses/>. */
/* Define multiple versions only for the definition in libc. */
-#if IS_IN (libc)
+#if IS_IN (libc) || IS_IN (libcpu_rt_c)
# define memcmp __redirect_memcmp
# include <string.h>
# undef memcmp
--
2.17.1
^ permalink raw reply [flat|nested] 33+ messages in thread
* [PATCH 20/20] libcpu-rt-c/x86-64: Add strrchr
2018-06-12 22:19 [PATCH 00/20] RFC: Add the CPU run-time library for C H.J. Lu
` (12 preceding siblings ...)
2018-06-12 22:20 ` [PATCH 05/20] libcpu-rt-c/x86-64: " H.J. Lu
@ 2018-06-12 22:20 ` H.J. Lu
2018-06-12 22:20 ` [PATCH 06/20] libcpu-rt-c/x86-64: Add memcpy, memmove and mempcpy H.J. Lu
` (7 subsequent siblings)
21 siblings, 0 replies; 33+ messages in thread
From: H.J. Lu @ 2018-06-12 22:20 UTC (permalink / raw)
To: libc-alpha
* sysdeps/x86_64/Makefile (cpu-rt-c-routines): Add strrchr.
* sysdeps/x86_64/multiarch/Makefile
(libcpu-rt-c-sysdep_routines): strrchr-sse2 and strrchr-avx2.
* sysdeps/x86_64/multiarch/strrchr-avx2.S: Support libcpu-rt-c.
* sysdeps/x86_64/multiarch/strrchr-sse2.S: Likewise.
* sysdeps/x86_64/multiarch/strrchr.c: Likewise.
---
sysdeps/x86_64/Makefile | 2 +-
sysdeps/x86_64/multiarch/Makefile | 2 +-
sysdeps/x86_64/multiarch/strrchr-avx2.S | 2 +-
sysdeps/x86_64/multiarch/strrchr-sse2.S | 2 +-
sysdeps/x86_64/multiarch/strrchr.c | 4 ++--
5 files changed, 6 insertions(+), 6 deletions(-)
diff --git a/sysdeps/x86_64/Makefile b/sysdeps/x86_64/Makefile
index 17d3a07894..267ce17e42 100644
--- a/sysdeps/x86_64/Makefile
+++ b/sysdeps/x86_64/Makefile
@@ -149,7 +149,7 @@ endif
ifeq ($(subdir),cpu-rt-c)
cpu-rt-c-routines += memchr memcmp memcpy memmove mempcpy memrchr \
memset strcat strchr strcmp strcpy strlen strncat \
- strnlen strncmp strncpy \
+ strnlen strncmp strncpy strrchr \
wmemset
# For the CPU run-time tests.
diff --git a/sysdeps/x86_64/multiarch/Makefile b/sysdeps/x86_64/multiarch/Makefile
index de4938b3eb..08a578e1a3 100644
--- a/sysdeps/x86_64/multiarch/Makefile
+++ b/sysdeps/x86_64/multiarch/Makefile
@@ -93,5 +93,5 @@ libcpu-rt-c-sysdep_routines += memchr-sse2 memchr-avx2 \
strnlen-sse2 strnlen-avx2 strncmp-sse2 \
strncmp-ssse3 strncmp-sse4_2 strncmp-avx2 \
strncpy-c strncpy-sse2-unaligned \
- strncpy-ssse3
+ strncpy-ssse3 strrchr-sse2 strrchr-avx2
endif
diff --git a/sysdeps/x86_64/multiarch/strrchr-avx2.S b/sysdeps/x86_64/multiarch/strrchr-avx2.S
index 4381e6ab3e..78347b6bf7 100644
--- a/sysdeps/x86_64/multiarch/strrchr-avx2.S
+++ b/sysdeps/x86_64/multiarch/strrchr-avx2.S
@@ -16,7 +16,7 @@
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
-#if IS_IN (libc)
+#if IS_IN (libc) || IS_IN (libcpu_rt_c)
# include <sysdep.h>
diff --git a/sysdeps/x86_64/multiarch/strrchr-sse2.S b/sysdeps/x86_64/multiarch/strrchr-sse2.S
index 0ec76fe9cc..0f6678f642 100644
--- a/sysdeps/x86_64/multiarch/strrchr-sse2.S
+++ b/sysdeps/x86_64/multiarch/strrchr-sse2.S
@@ -16,7 +16,7 @@
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
-#if IS_IN (libc)
+#if IS_IN (libc) || IS_IN (libcpu_rt_c)
# define strrchr __strrchr_sse2
# undef weak_alias
diff --git a/sysdeps/x86_64/multiarch/strrchr.c b/sysdeps/x86_64/multiarch/strrchr.c
index a719edde10..6c44acb42d 100644
--- a/sysdeps/x86_64/multiarch/strrchr.c
+++ b/sysdeps/x86_64/multiarch/strrchr.c
@@ -17,7 +17,7 @@
<http://www.gnu.org/licenses/>. */
/* Define multiple versions only for the definition in libc. */
-#if IS_IN (libc)
+#if IS_IN (libc) || IS_IN (libcpu_rt_c)
# define strrchr __redirect_strrchr
# include <string.h>
# undef strrchr
@@ -27,7 +27,7 @@
libc_ifunc_redirected (__redirect_strrchr, strrchr, IFUNC_SELECTOR ());
weak_alias (strrchr, rindex);
-# ifdef SHARED
+# if defined SHARED && !IS_IN (libcpu_rt_c)
__hidden_ver1 (strrchr, __GI_strrchr, __redirect_strrchr)
__attribute__((visibility ("hidden")));
# endif
--
2.17.1
^ permalink raw reply [flat|nested] 33+ messages in thread
* [PATCH 10/20] libcpu-rt-c: Don't use IFUNC memcmp in init_cpu_features
2018-06-12 22:19 [PATCH 00/20] RFC: Add the CPU run-time library for C H.J. Lu
` (6 preceding siblings ...)
2018-06-12 22:20 ` [PATCH 18/20] libcpu-rt-c/x86-64: Add strncmp H.J. Lu
@ 2018-06-12 22:20 ` H.J. Lu
2018-06-12 22:20 ` [PATCH 19/20] libcpu-rt-c/x86-64: Add strncpy H.J. Lu
` (13 subsequent siblings)
21 siblings, 0 replies; 33+ messages in thread
From: H.J. Lu @ 2018-06-12 22:20 UTC (permalink / raw)
To: libc-alpha
Don't use IFUNC memcmp in init_cpu_features libcpu-rt-c since IFUNC must
be set up by init_cpu_features.
* sysdeps/x86/cpu-tunables.c (DEFAULT_MEMCMP): Don't use IFUNC
memcmp in libcpu-rt-c.
---
sysdeps/x86/cpu-tunables.c | 8 ++++++--
1 file changed, 6 insertions(+), 2 deletions(-)
diff --git a/sysdeps/x86/cpu-tunables.c b/sysdeps/x86/cpu-tunables.c
index 3d1c26577f..901a5d3934 100644
--- a/sysdeps/x86/cpu-tunables.c
+++ b/sysdeps/x86/cpu-tunables.c
@@ -32,13 +32,17 @@
/* We can't use IFUNC memcmp nor strlen in init_cpu_features from libc.a
since IFUNC must be set up by init_cpu_features. */
-# if defined USE_MULTIARCH && !defined SHARED
+# if defined USE_MULTIARCH && (!defined SHARED || IS_IN (libcpu_rt_c))
# ifdef __x86_64__
# define DEFAULT_MEMCMP __memcmp_sse2
# else
# define DEFAULT_MEMCMP __memcmp_ia32
# endif
-extern __typeof (memcmp) DEFAULT_MEMCMP;
+extern __typeof (memcmp) DEFAULT_MEMCMP
+# if IS_IN (libcpu_rt_c)
+ __attribute__ ((visibility ("hidden")));
+# endif
+;
# else
# define DEFAULT_MEMCMP memcmp
# endif
--
2.17.1
^ permalink raw reply [flat|nested] 33+ messages in thread
* [PATCH 01/20] Initial empty CPU run-time library for C: libcpu-rt-c
2018-06-12 22:19 [PATCH 00/20] RFC: Add the CPU run-time library for C H.J. Lu
` (14 preceding siblings ...)
2018-06-12 22:20 ` [PATCH 06/20] libcpu-rt-c/x86-64: Add memcpy, memmove and mempcpy H.J. Lu
@ 2018-06-12 22:20 ` H.J. Lu
2018-06-12 23:21 ` Joseph Myers
2018-06-12 22:20 ` [PATCH 12/20] libcpu-rt-c/x86-64: Add strcmp H.J. Lu
` (5 subsequent siblings)
21 siblings, 1 reply; 33+ messages in thread
From: H.J. Lu @ 2018-06-12 22:20 UTC (permalink / raw)
To: libc-alpha
Add the --enable-cpu-rt configure option to enable the CPU run-time
library for C, libcpu-rt-c. libcpu-rt-c contains a subset of the C
library with the optimized functions. The resulting libcpu-rt-c.so
should be binary compatible with older versions of libc.so so that
libcpu-rt-c.so can be used with LD_PRELOAD or linked directly with
applications.
* Makeconfig (rpath-dirs): Add cpu-rt-c.
(all-subdirs): Likewise.
* configure: Regenerated.
* configure.ac: Add --enable-cpu-rt.
(build-cpu-rt): New LIBC_CONFIG_VAR.
* shlib-versions: Add libcpu_rt-c.
* cpu-rt-c/Makefile: New file.
---
Makeconfig | 4 ++--
configure | 17 +++++++++++++++++
configure.ac | 11 +++++++++++
cpu-rt-c/Makefile | 42 ++++++++++++++++++++++++++++++++++++++++++
shlib-versions | 3 +++
5 files changed, 75 insertions(+), 2 deletions(-)
create mode 100644 cpu-rt-c/Makefile
diff --git a/Makeconfig b/Makeconfig
index 1afe86475c..ed894b7c8f 100644
--- a/Makeconfig
+++ b/Makeconfig
@@ -566,7 +566,7 @@ link-libc-printers-tests = $(link-libc-rpath) \
$(link-libc-tests-after-rpath-link)
# This is how to find at build-time things that will be installed there.
-rpath-dirs = math elf dlfcn nss nis rt resolv crypt mathvec support
+rpath-dirs = math elf dlfcn nss nis rt resolv crypt mathvec cpu-rt-c support
rpath-link = \
$(common-objdir):$(subst $(empty) ,:,$(patsubst ../$(subdir),.,$(rpath-dirs:%=$(common-objpfx)%)))
else # build-static
@@ -1206,7 +1206,7 @@ all-subdirs = csu assert ctype locale intl catgets math setjmp signal \
grp pwd posix io termios resource misc socket sysvipc gmon \
gnulib iconv iconvdata wctype manual shadow gshadow po argp \
crypt localedata timezone rt conform debug mathvec support \
- dlfcn elf
+ dlfcn elf cpu-rt-c
ifndef avoid-generated
# sysd-sorted itself will contain rules making the sysd-sorted target
diff --git a/configure b/configure
index 7a8bd3f817..580bebb75d 100755
--- a/configure
+++ b/configure
@@ -788,6 +788,7 @@ enable_nscd
enable_pt_chown
enable_tunables
enable_mathvec
+enable_cpu_rt
with_cpu
'
ac_precious_vars='build_alias
@@ -1461,6 +1462,8 @@ Optional Features:
'no' and 'valstring'
--enable-mathvec Enable building and installing mathvec [default
depends on architecture]
+ --enable-cpu-rt Enable building and installing CPU run-time library
+ [default depends on architecture]
Optional Packages:
--with-PACKAGE[=ARG] use PACKAGE [ARG=yes]
@@ -3741,6 +3744,14 @@ else
fi
+# Check whether --enable-cpu-rt was given.
+if test "${enable_cpu_rt+set}" = set; then :
+ enableval=$enable_cpu_rt; build_cpu_rt=$enableval
+else
+ build_cpu_rt=notset
+fi
+
+
# We keep the original values in `$config_*' and never modify them, so we
# can write them unchanged into config.make. Everything else uses
# $machine, $vendor, and $os, and changes them whenever convenient.
@@ -6678,6 +6689,12 @@ fi
config_vars="$config_vars
build-mathvec = $build_mathvec"
+if test x"$build_cpu_rt" = xnotset; then
+ build_cpu_rt=no
+fi
+config_vars="$config_vars
+build-cpu-rt = $build_cpu_rt"
+
diff --git a/configure.ac b/configure.ac
index ca1282a6b3..a851d958f1 100644
--- a/configure.ac
+++ b/configure.ac
@@ -453,6 +453,12 @@ AC_ARG_ENABLE([mathvec],
[build_mathvec=$enableval],
[build_mathvec=notset])
+AC_ARG_ENABLE([cpu-rt],
+ [AS_HELP_STRING([--enable-cpu-rt],
+ [Enable building and installing CPU run-time library @<:@default depends on architecture@:>@])],
+ [build_cpu_rt=$enableval],
+ [build_cpu_rt=notset])
+
# We keep the original values in `$config_*' and never modify them, so we
# can write them unchanged into config.make. Everything else uses
# $machine, $vendor, and $os, and changes them whenever convenient.
@@ -1737,6 +1743,11 @@ if test x"$build_mathvec" = xnotset; then
fi
LIBC_CONFIG_VAR([build-mathvec], [$build_mathvec])
+if test x"$build_cpu_rt" = xnotset; then
+ build_cpu_rt=no
+fi
+LIBC_CONFIG_VAR([build-cpu-rt], [$build_cpu_rt])
+
AC_SUBST(libc_extra_cflags)
AC_SUBST(libc_extra_cppflags)
diff --git a/cpu-rt-c/Makefile b/cpu-rt-c/Makefile
new file mode 100644
index 0000000000..f138911347
--- /dev/null
+++ b/cpu-rt-c/Makefile
@@ -0,0 +1,42 @@
+# Copyright (C) 2018 Free Software Foundation, Inc.
+# This file is part of the GNU C Library.
+
+# The GNU C Library is free software; you can redistribute it and/or
+# modify it under the terms of the GNU Lesser General Public
+# License as published by the Free Software Foundation; either
+# version 2.1 of the License, or (at your option) any later version.
+
+# The GNU C Library is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+# Lesser General Public License for more details.
+
+# You should have received a copy of the GNU Lesser General Public
+# License along with the GNU C Library; if not, see
+# <http://www.gnu.org/licenses/>.
+
+# Makefile for the CPU run-time library for C.
+
+subdir := cpu-rt-c
+
+include ../Makeconfig
+
+ifeq ($(build-cpu-rt),yes)
+extra-libs := libcpu-rt-c
+extra-libs-others = $(extra-libs)
+
+libcpu-rt-c-sysdep_routines += $(cpu-rt-c-routines)
+libcpu-rt-c-tests += $(addprefix test-,$(cpu-rt-c-routines))
+tests += $(libcpu-rt-c-tests)
+endif
+
+include ../Rules
+
+ifeq ($(build-cpu-rt),yes)
+ifeq ($(build-shared),yes)
+libcpu-rt-c = $(objpfx)libcpu-rt-c.so
+else
+libcpu-rt-c = $(objpfx)libcpu-rt-c.a
+endif
+$(addprefix $(objpfx),$(libcpu-rt-c-tests)): $(libcpu-rt-c)
+endif
diff --git a/shlib-versions b/shlib-versions
index b9cb99d2fb..43e4c63f54 100644
--- a/shlib-versions
+++ b/shlib-versions
@@ -75,3 +75,6 @@ libgcc_s=1
# The vector math library
libmvec=1
+
+# The CPU run-time library for C
+libcpu_rt_c=1
--
2.17.1
^ permalink raw reply [flat|nested] 33+ messages in thread
* [PATCH 17/20] libcpu-rt-c/x86-64: Add strncat
2018-06-12 22:19 [PATCH 00/20] RFC: Add the CPU run-time library for C H.J. Lu
` (8 preceding siblings ...)
2018-06-12 22:20 ` [PATCH 19/20] libcpu-rt-c/x86-64: Add strncpy H.J. Lu
@ 2018-06-12 22:20 ` H.J. Lu
2018-06-12 22:20 ` [PATCH 14/20] libcpu-rt-c/x86-64: Add strlen H.J. Lu
` (11 subsequent siblings)
21 siblings, 0 replies; 33+ messages in thread
From: H.J. Lu @ 2018-06-12 22:20 UTC (permalink / raw)
To: libc-alpha
* sysdeps/x86_64/Makefile (cpu-rt-c-routines): Add strncat.
* sysdeps/x86_64/multiarch/Makefile
(libcpu-rt-c-sysdep_routines): Add strncat-sse2-unaligned,
strncat-ssse3, strnlen-sse2 and strnlen-avx2,
* sysdeps/x86_64/strncat.c: New file.
* sysdeps/x86_64/multiarch/strncat-c.c: Support libcpu-rt-c.
* sysdeps/x86_64/multiarch/strncat.c: Likewise.
---
sysdeps/x86_64/Makefile | 3 ++-
sysdeps/x86_64/multiarch/Makefile | 3 ++-
sysdeps/x86_64/multiarch/strncat-c.c | 2 +-
sysdeps/x86_64/multiarch/strncat.c | 6 ++++--
sysdeps/x86_64/strncat.c | 9 +++++++++
5 files changed, 18 insertions(+), 5 deletions(-)
create mode 100644 sysdeps/x86_64/strncat.c
diff --git a/sysdeps/x86_64/Makefile b/sysdeps/x86_64/Makefile
index 1a5720bbac..3c9ea605c6 100644
--- a/sysdeps/x86_64/Makefile
+++ b/sysdeps/x86_64/Makefile
@@ -148,7 +148,8 @@ endif
ifeq ($(subdir),cpu-rt-c)
cpu-rt-c-routines += memchr memcmp memcpy memmove mempcpy memrchr \
- memset strcat strchr strcmp strcpy strlen strnlen \
+ memset strcat strchr strcmp strcpy strlen strncat \
+ strnlen \
wmemset
# For the CPU run-time tests.
diff --git a/sysdeps/x86_64/multiarch/Makefile b/sysdeps/x86_64/multiarch/Makefile
index 1c902eec4e..c9ae280f43 100644
--- a/sysdeps/x86_64/multiarch/Makefile
+++ b/sysdeps/x86_64/multiarch/Makefile
@@ -88,6 +88,7 @@ libcpu-rt-c-sysdep_routines += memchr-sse2 memchr-avx2 \
strcmp-sse2-unaligned strcmp-ssse3 \
strcmp-sse4_2 strcmp-avx2 strcpy-sse2 \
strcpy-sse2-unaligned strcpy-ssse3 \
- strlen-sse2 strlen-avx2 \
+ strlen-sse2 strlen-avx2 strncat-c \
+ strncat-sse2-unaligned strncat-ssse3 \
strnlen-sse2 strnlen-avx2
endif
diff --git a/sysdeps/x86_64/multiarch/strncat-c.c b/sysdeps/x86_64/multiarch/strncat-c.c
index 93a7fab7ea..eb08e80d2e 100644
--- a/sysdeps/x86_64/multiarch/strncat-c.c
+++ b/sysdeps/x86_64/multiarch/strncat-c.c
@@ -1,2 +1,2 @@
#define STRNCAT __strncat_sse2
-#include <string/strncat.c>
+#include <sysdeps/x86_64/strncat.c>
diff --git a/sysdeps/x86_64/multiarch/strncat.c b/sysdeps/x86_64/multiarch/strncat.c
index 841c165565..8bfc54a472 100644
--- a/sysdeps/x86_64/multiarch/strncat.c
+++ b/sysdeps/x86_64/multiarch/strncat.c
@@ -18,7 +18,7 @@
<http://www.gnu.org/licenses/>. */
/* Define multiple versions only for the definition in libc. */
-#if IS_IN (libc)
+#if IS_IN (libc) || IS_IN (libcpu_rt_c)
# define strncat __redirect_strncat
# include <string.h>
# undef strncat
@@ -27,9 +27,11 @@
# include "ifunc-unaligned-ssse3.h"
libc_ifunc_redirected (__redirect_strncat, strncat, IFUNC_SELECTOR ());
+# if !IS_IN (libcpu_rt_c)
strong_alias (strncat, __strncat);
-# ifdef SHARED
+# ifdef SHARED
__hidden_ver1 (strncat, __GI___strncat, __redirect_strncat)
__attribute__((visibility ("hidden")));
+# endif
# endif
#endif
diff --git a/sysdeps/x86_64/strncat.c b/sysdeps/x86_64/strncat.c
new file mode 100644
index 0000000000..ad6885514a
--- /dev/null
+++ b/sysdeps/x86_64/strncat.c
@@ -0,0 +1,9 @@
+#if IS_IN (libcpu_rt_c)
+# include <string.h>
+extern __typeof (strnlen) __strnlen attribute_hidden;
+# ifndef STRNCAT
+# define STRNCAT strncat
+# endif
+#endif
+
+#include <string/strncat.c>
--
2.17.1
^ permalink raw reply [flat|nested] 33+ messages in thread
* [PATCH 18/20] libcpu-rt-c/x86-64: Add strncmp
2018-06-12 22:19 [PATCH 00/20] RFC: Add the CPU run-time library for C H.J. Lu
` (5 preceding siblings ...)
2018-06-12 22:20 ` [PATCH 13/20] libcpu-rt-c/x86-64: Add strcpy H.J. Lu
@ 2018-06-12 22:20 ` H.J. Lu
2018-06-12 22:20 ` [PATCH 10/20] libcpu-rt-c: Don't use IFUNC memcmp in init_cpu_features H.J. Lu
` (14 subsequent siblings)
21 siblings, 0 replies; 33+ messages in thread
From: H.J. Lu @ 2018-06-12 22:20 UTC (permalink / raw)
To: libc-alpha
* sysdeps/x86_64/Makefile (cpu-rt-c-routines): Add strncmp.
* sysdeps/x86_64/multiarch/Makefile
(libcpu-rt-c-sysdep_routines): Add strncmp-sse2, strncmp-ssse3,
strncmp-sse4_2 and strncmp-avx2.
* sysdeps/x86_64/multiarch/strncmp-sse2.S: Also rename STRCMP
to __strncmp_sse2 for libcpu-rt-c.
* sysdeps/x86_64/multiarch/strncmp.c: Support libcpu-rt-c.
---
sysdeps/x86_64/Makefile | 2 +-
sysdeps/x86_64/multiarch/Makefile | 3 ++-
sysdeps/x86_64/multiarch/strncmp-sse2.S | 2 +-
sysdeps/x86_64/multiarch/strncmp.c | 4 ++--
4 files changed, 6 insertions(+), 5 deletions(-)
diff --git a/sysdeps/x86_64/Makefile b/sysdeps/x86_64/Makefile
index 3c9ea605c6..4e872b1220 100644
--- a/sysdeps/x86_64/Makefile
+++ b/sysdeps/x86_64/Makefile
@@ -149,7 +149,7 @@ endif
ifeq ($(subdir),cpu-rt-c)
cpu-rt-c-routines += memchr memcmp memcpy memmove mempcpy memrchr \
memset strcat strchr strcmp strcpy strlen strncat \
- strnlen \
+ strnlen strncmp \
wmemset
# For the CPU run-time tests.
diff --git a/sysdeps/x86_64/multiarch/Makefile b/sysdeps/x86_64/multiarch/Makefile
index c9ae280f43..e3c197ba84 100644
--- a/sysdeps/x86_64/multiarch/Makefile
+++ b/sysdeps/x86_64/multiarch/Makefile
@@ -90,5 +90,6 @@ libcpu-rt-c-sysdep_routines += memchr-sse2 memchr-avx2 \
strcpy-sse2-unaligned strcpy-ssse3 \
strlen-sse2 strlen-avx2 strncat-c \
strncat-sse2-unaligned strncat-ssse3 \
- strnlen-sse2 strnlen-avx2
+ strnlen-sse2 strnlen-avx2 strncmp-sse2 \
+ strncmp-ssse3 strncmp-sse4_2 strncmp-avx2
endif
diff --git a/sysdeps/x86_64/multiarch/strncmp-sse2.S b/sysdeps/x86_64/multiarch/strncmp-sse2.S
index a5ecb82b13..5ef1d31ac3 100644
--- a/sysdeps/x86_64/multiarch/strncmp-sse2.S
+++ b/sysdeps/x86_64/multiarch/strncmp-sse2.S
@@ -18,7 +18,7 @@
#include <sysdep.h>
-#if IS_IN (libc)
+#if IS_IN (libc) || IS_IN (libcpu_rt_c)
# define STRCMP __strncmp_sse2
# undef libc_hidden_builtin_def
# define libc_hidden_builtin_def(strcmp)
diff --git a/sysdeps/x86_64/multiarch/strncmp.c b/sysdeps/x86_64/multiarch/strncmp.c
index 02b6d0b6f5..427763ff05 100644
--- a/sysdeps/x86_64/multiarch/strncmp.c
+++ b/sysdeps/x86_64/multiarch/strncmp.c
@@ -18,7 +18,7 @@
<http://www.gnu.org/licenses/>. */
/* Define multiple versions only for the definition in libc. */
-#if IS_IN (libc)
+#if IS_IN (libc) || IS_IN (libcpu_rt_c)
# define strncmp __redirect_strncmp
# include <string.h>
# undef strncmp
@@ -53,7 +53,7 @@ IFUNC_SELECTOR (void)
libc_ifunc_redirected (__redirect_strncmp, strncmp, IFUNC_SELECTOR ());
-# ifdef SHARED
+# if defined SHARED && !IS_IN (libcpu_rt_c)
__hidden_ver1 (strncmp, __GI_strncmp, __redirect_strncmp)
__attribute__ ((visibility ("hidden")));
# endif
--
2.17.1
^ permalink raw reply [flat|nested] 33+ messages in thread
* [PATCH 13/20] libcpu-rt-c/x86-64: Add strcpy
2018-06-12 22:19 [PATCH 00/20] RFC: Add the CPU run-time library for C H.J. Lu
` (4 preceding siblings ...)
2018-06-12 22:19 ` [PATCH 04/20] libcpu-rt-c/x86-64: Add memchr H.J. Lu
@ 2018-06-12 22:20 ` H.J. Lu
2018-06-12 22:20 ` [PATCH 18/20] libcpu-rt-c/x86-64: Add strncmp H.J. Lu
` (15 subsequent siblings)
21 siblings, 0 replies; 33+ messages in thread
From: H.J. Lu @ 2018-06-12 22:20 UTC (permalink / raw)
To: libc-alpha
* sysdeps/x86_64/Makefile (cpu-rt-c-routines): Add strcpy.
* sysdeps/x86_64/multiarch/Makefile
(libcpu-rt-c-sysdep_routines): Add strcpy-sse2,
strcpy-sse2-unaligned and strcpy-ssse3.
* sysdeps/x86_64/multiarch/strcpy-sse2-unaligned.S: Support
libcpu-rt-c.
* sysdeps/x86_64/multiarch/strcpy-sse2.S: Likewise.
* sysdeps/x86_64/multiarch/strcpy-ssse3.S: Likewise.
* sysdeps/x86_64/multiarch/strcpy.c: Likewise.
---
sysdeps/x86_64/Makefile | 2 +-
sysdeps/x86_64/multiarch/Makefile | 3 ++-
sysdeps/x86_64/multiarch/strcpy-sse2-unaligned.S | 2 +-
sysdeps/x86_64/multiarch/strcpy-sse2.S | 2 +-
sysdeps/x86_64/multiarch/strcpy-ssse3.S | 2 +-
sysdeps/x86_64/multiarch/strcpy.c | 4 ++--
6 files changed, 8 insertions(+), 7 deletions(-)
diff --git a/sysdeps/x86_64/Makefile b/sysdeps/x86_64/Makefile
index dbd2d5e6df..b793d067f2 100644
--- a/sysdeps/x86_64/Makefile
+++ b/sysdeps/x86_64/Makefile
@@ -148,7 +148,7 @@ endif
ifeq ($(subdir),cpu-rt-c)
cpu-rt-c-routines += memchr memcmp memcpy memmove mempcpy memrchr \
- memset strchr strcmp \
+ memset strchr strcmp strcpy \
wmemset
# For the CPU run-time tests.
diff --git a/sysdeps/x86_64/multiarch/Makefile b/sysdeps/x86_64/multiarch/Makefile
index c1cf7d89fa..c6040a0170 100644
--- a/sysdeps/x86_64/multiarch/Makefile
+++ b/sysdeps/x86_64/multiarch/Makefile
@@ -84,5 +84,6 @@ libcpu-rt-c-sysdep_routines += memchr-sse2 memchr-avx2 \
strchr-sse2-no-bsf strchr-sse2 \
strchr-avx2 strcmp-sse2 \
strcmp-sse2-unaligned strcmp-ssse3 \
- strcmp-sse4_2 strcmp-avx2
+ strcmp-sse4_2 strcmp-avx2 strcpy-sse2 \
+ strcpy-sse2-unaligned strcpy-ssse3
endif
diff --git a/sysdeps/x86_64/multiarch/strcpy-sse2-unaligned.S b/sysdeps/x86_64/multiarch/strcpy-sse2-unaligned.S
index 56b748eb2c..8ae7bd3cc3 100644
--- a/sysdeps/x86_64/multiarch/strcpy-sse2-unaligned.S
+++ b/sysdeps/x86_64/multiarch/strcpy-sse2-unaligned.S
@@ -17,7 +17,7 @@
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
-#if IS_IN (libc)
+#if IS_IN (libc) || IS_IN (libcpu_rt_c)
# ifndef USE_AS_STRCAT
# include <sysdep.h>
diff --git a/sysdeps/x86_64/multiarch/strcpy-sse2.S b/sysdeps/x86_64/multiarch/strcpy-sse2.S
index 70136017fa..c6cd2434ef 100644
--- a/sysdeps/x86_64/multiarch/strcpy-sse2.S
+++ b/sysdeps/x86_64/multiarch/strcpy-sse2.S
@@ -16,7 +16,7 @@
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
-#if IS_IN (libc)
+#if IS_IN (libc) || IS_IN (libcpu_rt_c)
# include <sysdep.h>
# define strcpy __strcpy_sse2
diff --git a/sysdeps/x86_64/multiarch/strcpy-ssse3.S b/sysdeps/x86_64/multiarch/strcpy-ssse3.S
index 9858d0c4d5..d000fc2494 100644
--- a/sysdeps/x86_64/multiarch/strcpy-ssse3.S
+++ b/sysdeps/x86_64/multiarch/strcpy-ssse3.S
@@ -17,7 +17,7 @@
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
-#if IS_IN (libc)
+#if IS_IN (libc) || IS_IN (libcpu_rt_c)
# ifndef USE_AS_STRCAT
# include <sysdep.h>
diff --git a/sysdeps/x86_64/multiarch/strcpy.c b/sysdeps/x86_64/multiarch/strcpy.c
index 12e0e3ffe2..ccfa151085 100644
--- a/sysdeps/x86_64/multiarch/strcpy.c
+++ b/sysdeps/x86_64/multiarch/strcpy.c
@@ -18,7 +18,7 @@
<http://www.gnu.org/licenses/>. */
/* Define multiple versions only for the definition in libc. */
-#if IS_IN (libc)
+#if IS_IN (libc) || IS_IN (libcpu_rt_c)
# define strcpy __redirect_strcpy
# include <string.h>
# undef strcpy
@@ -28,7 +28,7 @@
libc_ifunc_redirected (__redirect_strcpy, strcpy, IFUNC_SELECTOR ());
-# ifdef SHARED
+# if defined SHARED && !IS_IN (libcpu_rt_c)
__hidden_ver1 (strcpy, __GI_strcpy, __redirect_strcpy)
__attribute__ ((visibility ("hidden")));
# endif
--
2.17.1
^ permalink raw reply [flat|nested] 33+ messages in thread
* [PATCH 14/20] libcpu-rt-c/x86-64: Add strlen
2018-06-12 22:19 [PATCH 00/20] RFC: Add the CPU run-time library for C H.J. Lu
` (9 preceding siblings ...)
2018-06-12 22:20 ` [PATCH 17/20] libcpu-rt-c/x86-64: Add strncat H.J. Lu
@ 2018-06-12 22:20 ` H.J. Lu
2018-06-12 22:20 ` [PATCH 09/20] libcpu-rt-c/i386: Add memcmp H.J. Lu
` (10 subsequent siblings)
21 siblings, 0 replies; 33+ messages in thread
From: H.J. Lu @ 2018-06-12 22:20 UTC (permalink / raw)
To: libc-alpha
* sysdeps/x86_64/Makefile (cpu-rt-c-routines): Add strlen.
* sysdeps/x86_64/multiarch/Makefile
(libcpu-rt-c-sysdep_routines): Add strlen-sse2 and strlen-avx2.
* sysdeps/x86_64/multiarch/strlen-avx2.S: Support libcpu-rt-c.
* sysdeps/x86_64/multiarch/strlen-sse2.S: Likewise.
* sysdeps/x86_64/multiarch/strlen.c: Likewise.
---
sysdeps/x86_64/Makefile | 2 +-
sysdeps/x86_64/multiarch/Makefile | 3 ++-
sysdeps/x86_64/multiarch/strlen-avx2.S | 2 +-
sysdeps/x86_64/multiarch/strlen-sse2.S | 2 +-
sysdeps/x86_64/multiarch/strlen.c | 4 ++--
5 files changed, 7 insertions(+), 6 deletions(-)
diff --git a/sysdeps/x86_64/Makefile b/sysdeps/x86_64/Makefile
index b793d067f2..947cb48086 100644
--- a/sysdeps/x86_64/Makefile
+++ b/sysdeps/x86_64/Makefile
@@ -148,7 +148,7 @@ endif
ifeq ($(subdir),cpu-rt-c)
cpu-rt-c-routines += memchr memcmp memcpy memmove mempcpy memrchr \
- memset strchr strcmp strcpy \
+ memset strchr strcmp strcpy strlen \
wmemset
# For the CPU run-time tests.
diff --git a/sysdeps/x86_64/multiarch/Makefile b/sysdeps/x86_64/multiarch/Makefile
index c6040a0170..b2f0e9f8da 100644
--- a/sysdeps/x86_64/multiarch/Makefile
+++ b/sysdeps/x86_64/multiarch/Makefile
@@ -85,5 +85,6 @@ libcpu-rt-c-sysdep_routines += memchr-sse2 memchr-avx2 \
strchr-avx2 strcmp-sse2 \
strcmp-sse2-unaligned strcmp-ssse3 \
strcmp-sse4_2 strcmp-avx2 strcpy-sse2 \
- strcpy-sse2-unaligned strcpy-ssse3
+ strcpy-sse2-unaligned strcpy-ssse3 \
+ strlen-sse2 strlen-avx2
endif
diff --git a/sysdeps/x86_64/multiarch/strlen-avx2.S b/sysdeps/x86_64/multiarch/strlen-avx2.S
index fb2418cddc..6e390e1ddf 100644
--- a/sysdeps/x86_64/multiarch/strlen-avx2.S
+++ b/sysdeps/x86_64/multiarch/strlen-avx2.S
@@ -16,7 +16,7 @@
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
-#if IS_IN (libc)
+#if IS_IN (libc) || IS_IN (libcpu_rt_c)
# include <sysdep.h>
diff --git a/sysdeps/x86_64/multiarch/strlen-sse2.S b/sysdeps/x86_64/multiarch/strlen-sse2.S
index 7bc57b8d0f..c0d80a3779 100644
--- a/sysdeps/x86_64/multiarch/strlen-sse2.S
+++ b/sysdeps/x86_64/multiarch/strlen-sse2.S
@@ -16,7 +16,7 @@
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
-#if IS_IN (libc)
+#if IS_IN (libc) || IS_IN (libcpu_rt_c)
# define strlen __strlen_sse2
#endif
diff --git a/sysdeps/x86_64/multiarch/strlen.c b/sysdeps/x86_64/multiarch/strlen.c
index 1758d22b8f..04d4c04b15 100644
--- a/sysdeps/x86_64/multiarch/strlen.c
+++ b/sysdeps/x86_64/multiarch/strlen.c
@@ -18,7 +18,7 @@
<http://www.gnu.org/licenses/>. */
/* Define multiple versions only for the definition in libc. */
-#if IS_IN (libc)
+#if IS_IN (libc) || IS_IN (libcpu_rt_c)
# define strlen __redirect_strlen
# include <string.h>
# undef strlen
@@ -27,7 +27,7 @@
# include "ifunc-avx2.h"
libc_ifunc_redirected (__redirect_strlen, strlen, IFUNC_SELECTOR ());
-# ifdef SHARED
+# if defined SHARED && !IS_IN (libcpu_rt_c)
__hidden_ver1 (strlen, __GI_strlen, __redirect_strlen)
__attribute__((visibility ("hidden")));
# endif
--
2.17.1
^ permalink raw reply [flat|nested] 33+ messages in thread
* [PATCH 15/20] libcpu-rt-c/x86-64: Add strcat
2018-06-12 22:19 [PATCH 00/20] RFC: Add the CPU run-time library for C H.J. Lu
` (16 preceding siblings ...)
2018-06-12 22:20 ` [PATCH 12/20] libcpu-rt-c/x86-64: Add strcmp H.J. Lu
@ 2018-06-12 22:20 ` H.J. Lu
2018-06-12 22:20 ` [PATCH 11/20] libcpu-rt-c/x86-64: Add strchr H.J. Lu
` (3 subsequent siblings)
21 siblings, 0 replies; 33+ messages in thread
From: H.J. Lu @ 2018-06-12 22:20 UTC (permalink / raw)
To: libc-alpha
* sysdeps/x86_64/Makefile (cpu-rt-c-routines): Add strcat.
* sysdeps/x86_64/multiarch/Makefile
(libcpu-rt-c-sysdep_routines): Add strcat-sse2,
strcat-sse2-unaligned and strcat-ssse3.
* sysdeps/x86_64/strcat.S: Support libcpu-rt-c.
* sysdeps/x86_64/multiarch/strcat-sse2-unaligned.S: Likewise.
* sysdeps/x86_64/multiarch/strcat-sse2.S: Likewise.
* sysdeps/x86_64/multiarch/strcat-ssse3.S: Likewise.
* sysdeps/x86_64/multiarch/strcat.c: Likewise.
---
sysdeps/x86_64/Makefile | 2 +-
sysdeps/x86_64/multiarch/Makefile | 2 ++
sysdeps/x86_64/multiarch/strcat-sse2-unaligned.S | 2 +-
sysdeps/x86_64/multiarch/strcat-sse2.S | 2 +-
sysdeps/x86_64/multiarch/strcat-ssse3.S | 2 +-
sysdeps/x86_64/multiarch/strcat.c | 4 ++--
sysdeps/x86_64/strcat.S | 2 ++
7 files changed, 10 insertions(+), 6 deletions(-)
diff --git a/sysdeps/x86_64/Makefile b/sysdeps/x86_64/Makefile
index 947cb48086..ea0d7a31dc 100644
--- a/sysdeps/x86_64/Makefile
+++ b/sysdeps/x86_64/Makefile
@@ -148,7 +148,7 @@ endif
ifeq ($(subdir),cpu-rt-c)
cpu-rt-c-routines += memchr memcmp memcpy memmove mempcpy memrchr \
- memset strchr strcmp strcpy strlen \
+ memset strcat strchr strcmp strcpy strlen \
wmemset
# For the CPU run-time tests.
diff --git a/sysdeps/x86_64/multiarch/Makefile b/sysdeps/x86_64/multiarch/Makefile
index b2f0e9f8da..10de1f3af3 100644
--- a/sysdeps/x86_64/multiarch/Makefile
+++ b/sysdeps/x86_64/multiarch/Makefile
@@ -81,6 +81,8 @@ libcpu-rt-c-sysdep_routines += memchr-sse2 memchr-avx2 \
memset-avx2-unaligned-erms \
memset-avx512-unaligned-erms \
memset-avx512-no-vzeroupper \
+ strcat-sse2 strcat-sse2-unaligned \
+ strcat-ssse3 \
strchr-sse2-no-bsf strchr-sse2 \
strchr-avx2 strcmp-sse2 \
strcmp-sse2-unaligned strcmp-ssse3 \
diff --git a/sysdeps/x86_64/multiarch/strcat-sse2-unaligned.S b/sysdeps/x86_64/multiarch/strcat-sse2-unaligned.S
index 852f179bf4..d144651b33 100644
--- a/sysdeps/x86_64/multiarch/strcat-sse2-unaligned.S
+++ b/sysdeps/x86_64/multiarch/strcat-sse2-unaligned.S
@@ -17,7 +17,7 @@
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
-#if IS_IN (libc)
+#if IS_IN (libc) || IS_IN (libcpu_rt_c)
# include <sysdep.h>
diff --git a/sysdeps/x86_64/multiarch/strcat-sse2.S b/sysdeps/x86_64/multiarch/strcat-sse2.S
index 8eb64e104c..f4939ac409 100644
--- a/sysdeps/x86_64/multiarch/strcat-sse2.S
+++ b/sysdeps/x86_64/multiarch/strcat-sse2.S
@@ -16,7 +16,7 @@
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
-#if IS_IN (libc)
+#if IS_IN (libc) || IS_IN (libcpu_rt_c)
# include <sysdep.h>
# define strcat __strcat_sse2
diff --git a/sysdeps/x86_64/multiarch/strcat-ssse3.S b/sysdeps/x86_64/multiarch/strcat-ssse3.S
index 2d4fd78f99..65e8b8e6a4 100644
--- a/sysdeps/x86_64/multiarch/strcat-ssse3.S
+++ b/sysdeps/x86_64/multiarch/strcat-ssse3.S
@@ -17,7 +17,7 @@
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
-#if IS_IN (libc)
+#if IS_IN (libc) || IS_IN (libcpu_rt_c)
# include <sysdep.h>
diff --git a/sysdeps/x86_64/multiarch/strcat.c b/sysdeps/x86_64/multiarch/strcat.c
index 1f7f6263f3..8637e249ec 100644
--- a/sysdeps/x86_64/multiarch/strcat.c
+++ b/sysdeps/x86_64/multiarch/strcat.c
@@ -18,7 +18,7 @@
<http://www.gnu.org/licenses/>. */
/* Define multiple versions only for the definition in libc. */
-#if IS_IN (libc)
+#if IS_IN (libc) || IS_IN (libcpu_rt_c)
# define strcat __redirect_strcat
# include <string.h>
# undef strcat
@@ -28,7 +28,7 @@
libc_ifunc_redirected (__redirect_strcat, strcat, IFUNC_SELECTOR ());
-# ifdef SHARED
+# if defined SHARED && !IS_IN (libcpu_rt_c)
__hidden_ver1 (strcat, __GI_strcat, __redirect_strcat)
__attribute__ ((visibility ("hidden")));
# endif
diff --git a/sysdeps/x86_64/strcat.S b/sysdeps/x86_64/strcat.S
index 9a4a4e6feb..db2a6e881a 100644
--- a/sysdeps/x86_64/strcat.S
+++ b/sysdeps/x86_64/strcat.S
@@ -255,4 +255,6 @@ ENTRY (strcat)
movq %rdi, %rax /* Source is return value. */
retq
END (strcat)
+#if !IS_IN (libcpu_rt_c)
libc_hidden_builtin_def (strcat)
+#endif
--
2.17.1
^ permalink raw reply [flat|nested] 33+ messages in thread
* [PATCH 11/20] libcpu-rt-c/x86-64: Add strchr
2018-06-12 22:19 [PATCH 00/20] RFC: Add the CPU run-time library for C H.J. Lu
` (17 preceding siblings ...)
2018-06-12 22:20 ` [PATCH 15/20] libcpu-rt-c/x86-64: Add strcat H.J. Lu
@ 2018-06-12 22:20 ` H.J. Lu
2018-06-12 22:20 ` [PATCH 16/20] libcpu-rt-c/x86-64: Add strnlen H.J. Lu
` (2 subsequent siblings)
21 siblings, 0 replies; 33+ messages in thread
From: H.J. Lu @ 2018-06-12 22:20 UTC (permalink / raw)
To: libc-alpha
* sysdeps/x86_64/Makefile (cpu-rt-c-routines): Add strchr.
* sysdeps/x86_64/multiarch/Makefile
(libcpu-rt-c-sysdep_routines): Add strchr-sse2-no-bsf,
strchr-sse2 and strchr-avx2.
* sysdeps/x86_64/multiarch/strchr-avx2.S: Support libcpu-rt-c.
* sysdeps/x86_64/multiarch/strchr-sse2-no-bsf.S: Likewise.
* sysdeps/x86_64/multiarch/strchr-sse2.S: Likewise.
* sysdeps/x86_64/multiarch/strchr.c: Likewise.
---
sysdeps/x86_64/Makefile | 2 +-
sysdeps/x86_64/multiarch/Makefile | 4 +++-
sysdeps/x86_64/multiarch/strchr-avx2.S | 2 +-
sysdeps/x86_64/multiarch/strchr-sse2-no-bsf.S | 2 +-
sysdeps/x86_64/multiarch/strchr-sse2.S | 2 +-
sysdeps/x86_64/multiarch/strchr.c | 4 ++--
6 files changed, 9 insertions(+), 7 deletions(-)
diff --git a/sysdeps/x86_64/Makefile b/sysdeps/x86_64/Makefile
index d5e4912074..6c8adb898a 100644
--- a/sysdeps/x86_64/Makefile
+++ b/sysdeps/x86_64/Makefile
@@ -148,7 +148,7 @@ endif
ifeq ($(subdir),cpu-rt-c)
cpu-rt-c-routines += memchr memcmp memcpy memmove mempcpy memrchr \
- memset \
+ memset strchr \
wmemset
# For the CPU run-time tests.
diff --git a/sysdeps/x86_64/multiarch/Makefile b/sysdeps/x86_64/multiarch/Makefile
index 9262251b2c..b06c1555df 100644
--- a/sysdeps/x86_64/multiarch/Makefile
+++ b/sysdeps/x86_64/multiarch/Makefile
@@ -80,5 +80,7 @@ libcpu-rt-c-sysdep_routines += memchr-sse2 memchr-avx2 \
memset-sse2-unaligned-erms \
memset-avx2-unaligned-erms \
memset-avx512-unaligned-erms \
- memset-avx512-no-vzeroupper
+ memset-avx512-no-vzeroupper \
+ strchr-sse2-no-bsf strchr-sse2 \
+ strchr-avx2
endif
diff --git a/sysdeps/x86_64/multiarch/strchr-avx2.S b/sysdeps/x86_64/multiarch/strchr-avx2.S
index 47bc3c9949..fd5bd1a64a 100644
--- a/sysdeps/x86_64/multiarch/strchr-avx2.S
+++ b/sysdeps/x86_64/multiarch/strchr-avx2.S
@@ -16,7 +16,7 @@
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
-#if IS_IN (libc)
+#if IS_IN (libc) || IS_IN (libcpu_rt_c)
# include <sysdep.h>
diff --git a/sysdeps/x86_64/multiarch/strchr-sse2-no-bsf.S b/sysdeps/x86_64/multiarch/strchr-sse2-no-bsf.S
index 93fb661da2..42be1a6c79 100644
--- a/sysdeps/x86_64/multiarch/strchr-sse2-no-bsf.S
+++ b/sysdeps/x86_64/multiarch/strchr-sse2-no-bsf.S
@@ -17,7 +17,7 @@
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
-#if IS_IN (libc)
+#if IS_IN (libc) || IS_IN (libcpu_rt_c)
# include <sysdep.h>
# include "asm-syntax.h"
diff --git a/sysdeps/x86_64/multiarch/strchr-sse2.S b/sysdeps/x86_64/multiarch/strchr-sse2.S
index 8a6e77195c..ac1f7fc494 100644
--- a/sysdeps/x86_64/multiarch/strchr-sse2.S
+++ b/sysdeps/x86_64/multiarch/strchr-sse2.S
@@ -16,7 +16,7 @@
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
-#if IS_IN (libc)
+#if IS_IN (libc) || IS_IN (libcpu_rt_c)
# define strchr __strchr_sse2
# undef weak_alias
diff --git a/sysdeps/x86_64/multiarch/strchr.c b/sysdeps/x86_64/multiarch/strchr.c
index 76d64fb378..ac748dc749 100644
--- a/sysdeps/x86_64/multiarch/strchr.c
+++ b/sysdeps/x86_64/multiarch/strchr.c
@@ -18,7 +18,7 @@
<http://www.gnu.org/licenses/>. */
/* Define multiple versions only for the definition in libc. */
-#if IS_IN (libc)
+#if IS_IN (libc) || IS_IN (libcpu_rt_c)
# define strchr __redirect_strchr
# include <string.h>
# undef strchr
@@ -48,7 +48,7 @@ IFUNC_SELECTOR (void)
libc_ifunc_redirected (__redirect_strchr, strchr, IFUNC_SELECTOR ());
weak_alias (strchr, index)
-# ifdef SHARED
+# if defined SHARED && !IS_IN (libcpu_rt_c)
__hidden_ver1 (strchr, __GI_strchr, __redirect_strchr)
__attribute__((visibility ("hidden")));
# endif
--
2.17.1
^ permalink raw reply [flat|nested] 33+ messages in thread
* [PATCH 05/20] libcpu-rt-c/x86-64: Add memcmp
2018-06-12 22:19 [PATCH 00/20] RFC: Add the CPU run-time library for C H.J. Lu
` (11 preceding siblings ...)
2018-06-12 22:20 ` [PATCH 09/20] libcpu-rt-c/i386: Add memcmp H.J. Lu
@ 2018-06-12 22:20 ` H.J. Lu
2018-06-12 22:20 ` [PATCH 20/20] libcpu-rt-c/x86-64: Add strrchr H.J. Lu
` (8 subsequent siblings)
21 siblings, 0 replies; 33+ messages in thread
From: H.J. Lu @ 2018-06-12 22:20 UTC (permalink / raw)
To: libc-alpha
* sysdeps/x86_64/Makefile (cpu-rt-c-routines): Add memcmp.
* sysdeps/x86_64/multiarch/Makefile
(libcpu-rt-c-sysdep_routines): Add memcmp-sse2, memcmp-ssse3,
memcmp-sse4 and memcmp-avx2-movbe.
* sysdeps/x86_64/multiarch/memcmp-avx2-movbe.S: Support
libcpu-rt-c.
* sysdeps/x86_64/multiarch/memcmp-sse2.S: Likewise.
* sysdeps/x86_64/multiarch/memcmp-sse4.S: Likewise.
* sysdeps/x86_64/multiarch/memcmp-ssse3.S: Likewise.
* sysdeps/x86_64/multiarch/memcmp.c: Likewise.
---
sysdeps/x86_64/Makefile | 2 +-
sysdeps/x86_64/multiarch/Makefile | 4 +++-
sysdeps/x86_64/multiarch/memcmp-avx2-movbe.S | 2 +-
sysdeps/x86_64/multiarch/memcmp-sse2.S | 2 +-
sysdeps/x86_64/multiarch/memcmp-sse4.S | 2 +-
sysdeps/x86_64/multiarch/memcmp-ssse3.S | 2 +-
sysdeps/x86_64/multiarch/memcmp.c | 4 ++--
7 files changed, 10 insertions(+), 8 deletions(-)
diff --git a/sysdeps/x86_64/Makefile b/sysdeps/x86_64/Makefile
index d8f6d83d88..1eb13d01da 100644
--- a/sysdeps/x86_64/Makefile
+++ b/sysdeps/x86_64/Makefile
@@ -147,7 +147,7 @@ endif
endif
ifeq ($(subdir),cpu-rt-c)
-cpu-rt-c-routines += memchr
+cpu-rt-c-routines += memchr memcmp
# For the CPU run-time tests.
vpath %.c $(..)string
diff --git a/sysdeps/x86_64/multiarch/Makefile b/sysdeps/x86_64/multiarch/Makefile
index 2c43179b0f..9bb6c8c3cd 100644
--- a/sysdeps/x86_64/multiarch/Makefile
+++ b/sysdeps/x86_64/multiarch/Makefile
@@ -67,5 +67,7 @@ sysdep_routines += memcpy_chk-nonshared mempcpy_chk-nonshared \
endif
ifeq ($(subdir),cpu-rt-c)
-libcpu-rt-c-sysdep_routines += memchr-sse2 memchr-avx2
+libcpu-rt-c-sysdep_routines += memchr-sse2 memchr-avx2 \
+ memcmp-sse2 memcmp-ssse3 memcmp-sse4 \
+ memcmp-avx2-movbe
endif
diff --git a/sysdeps/x86_64/multiarch/memcmp-avx2-movbe.S b/sysdeps/x86_64/multiarch/memcmp-avx2-movbe.S
index 30f764c393..614fe23392 100644
--- a/sysdeps/x86_64/multiarch/memcmp-avx2-movbe.S
+++ b/sysdeps/x86_64/multiarch/memcmp-avx2-movbe.S
@@ -16,7 +16,7 @@
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
-#if IS_IN (libc)
+#if IS_IN (libc) || IS_IN (libcpu_rt_c)
/* memcmp/wmemcmp is implemented as:
1. For size from 2 to 7 bytes, load as big endian with movbe and bswap
diff --git a/sysdeps/x86_64/multiarch/memcmp-sse2.S b/sysdeps/x86_64/multiarch/memcmp-sse2.S
index 6058aa751e..5811cccc15 100644
--- a/sysdeps/x86_64/multiarch/memcmp-sse2.S
+++ b/sysdeps/x86_64/multiarch/memcmp-sse2.S
@@ -16,7 +16,7 @@
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
-#if IS_IN (libc)
+#if IS_IN (libc) || IS_IN (libcpu_rt_c)
# define memcmp __memcmp_sse2
# ifdef SHARED
diff --git a/sysdeps/x86_64/multiarch/memcmp-sse4.S b/sysdeps/x86_64/multiarch/memcmp-sse4.S
index 0d96d6b775..89dfb7f04a 100644
--- a/sysdeps/x86_64/multiarch/memcmp-sse4.S
+++ b/sysdeps/x86_64/multiarch/memcmp-sse4.S
@@ -17,7 +17,7 @@
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
-#if IS_IN (libc)
+#if IS_IN (libc) || IS_IN (libcpu_rt_c)
# include <sysdep.h>
diff --git a/sysdeps/x86_64/multiarch/memcmp-ssse3.S b/sysdeps/x86_64/multiarch/memcmp-ssse3.S
index 6f76c64123..2990c3dd2b 100644
--- a/sysdeps/x86_64/multiarch/memcmp-ssse3.S
+++ b/sysdeps/x86_64/multiarch/memcmp-ssse3.S
@@ -17,7 +17,7 @@
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
-#if IS_IN (libc)
+#if IS_IN (libc) || IS_IN (libcpu_rt_c)
# include <sysdep.h>
diff --git a/sysdeps/x86_64/multiarch/memcmp.c b/sysdeps/x86_64/multiarch/memcmp.c
index 6f3ca43128..53d604b883 100644
--- a/sysdeps/x86_64/multiarch/memcmp.c
+++ b/sysdeps/x86_64/multiarch/memcmp.c
@@ -18,7 +18,7 @@
<http://www.gnu.org/licenses/>. */
/* Define multiple versions only for the definition in libc. */
-#if IS_IN (libc)
+#if IS_IN (libc) || IS_IN (libcpu_rt_c)
# define memcmp __redirect_memcmp
# include <string.h>
# undef memcmp
@@ -30,7 +30,7 @@ libc_ifunc_redirected (__redirect_memcmp, memcmp, IFUNC_SELECTOR ());
# undef bcmp
weak_alias (memcmp, bcmp)
-# ifdef SHARED
+# if defined SHARED && !IS_IN (libcpu_rt_c)
__hidden_ver1 (memcmp, __GI_memcmp, __redirect_memcmp)
__attribute__ ((visibility ("hidden")));
# endif
--
2.17.1
^ permalink raw reply [flat|nested] 33+ messages in thread
* [PATCH 06/20] libcpu-rt-c/x86-64: Add memcpy, memmove and mempcpy
2018-06-12 22:19 [PATCH 00/20] RFC: Add the CPU run-time library for C H.J. Lu
` (13 preceding siblings ...)
2018-06-12 22:20 ` [PATCH 20/20] libcpu-rt-c/x86-64: Add strrchr H.J. Lu
@ 2018-06-12 22:20 ` H.J. Lu
2018-06-12 22:20 ` [PATCH 01/20] Initial empty CPU run-time library for C: libcpu-rt-c H.J. Lu
` (6 subsequent siblings)
21 siblings, 0 replies; 33+ messages in thread
From: H.J. Lu @ 2018-06-12 22:20 UTC (permalink / raw)
To: libc-alpha
* sysdeps/x86_64/Makefile (cpu-rt-c-routines): Add memcpy,
memmove and mempcpy.
* sysdeps/x86_64/memmove.S: Support libcpu-rt-c.
* sysdeps/x86_64/multiarch/memcpy-ssse3-back.S: Likewise.
* sysdeps/x86_64/multiarch/memcpy-ssse3.S: Likewise.
* sysdeps/x86_64/multiarch/memcpy.c: Likewise.
* sysdeps/x86_64/multiarch/memmove-avx-unaligned-erms.S:
Likewise.
* sysdeps/x86_64/multiarch/memmove-avx512-no-vzeroupper.S:
Likewise.
* sysdeps/x86_64/multiarch/memmove-avx512-unaligned-erms.S:
Likewise.
* sysdeps/x86_64/multiarch/memmove-sse2-unaligned-erms.S:
Likewise.
* sysdeps/x86_64/multiarch/memmove-vec-unaligned-erms.S: Likewise.
* sysdeps/x86_64/multiarch/memmove.c: Likewise.
* sysdeps/x86_64/multiarch/mempcpy.c: Likewise.
* sysdeps/x86_64/multiarch/Makefile
(libcpu-rt-c-sysdep_routines): Add memcpy-ssse3, memcpy-ssse3-back
memmove-sse2-unaligned-erms, memmove-ssse3, memmove-ssse3-back,
memmove-avx-unaligned-erms, memmove-avx512-unaligned-erms and
memmove-avx512-no-vzeroupper.
---
sysdeps/x86_64/Makefile | 2 +-
sysdeps/x86_64/memmove.S | 12 +++++--
sysdeps/x86_64/multiarch/Makefile | 8 ++++-
sysdeps/x86_64/multiarch/memcpy-ssse3-back.S | 6 ++--
sysdeps/x86_64/multiarch/memcpy-ssse3.S | 6 ++--
sysdeps/x86_64/multiarch/memcpy.c | 14 +++++---
.../multiarch/memmove-avx-unaligned-erms.S | 2 +-
.../multiarch/memmove-avx512-no-vzeroupper.S | 8 +++--
.../multiarch/memmove-avx512-unaligned-erms.S | 2 +-
.../multiarch/memmove-sse2-unaligned-erms.S | 2 +-
.../multiarch/memmove-vec-unaligned-erms.S | 33 ++++++++++++-------
sysdeps/x86_64/multiarch/memmove.c | 10 ++++--
sysdeps/x86_64/multiarch/mempcpy.c | 10 ++++--
13 files changed, 82 insertions(+), 33 deletions(-)
diff --git a/sysdeps/x86_64/Makefile b/sysdeps/x86_64/Makefile
index 1eb13d01da..978cff6cba 100644
--- a/sysdeps/x86_64/Makefile
+++ b/sysdeps/x86_64/Makefile
@@ -147,7 +147,7 @@ endif
endif
ifeq ($(subdir),cpu-rt-c)
-cpu-rt-c-routines += memchr memcmp
+cpu-rt-c-routines += memchr memcmp memcpy memmove mempcpy
# For the CPU run-time tests.
vpath %.c $(..)string
diff --git a/sysdeps/x86_64/memmove.S b/sysdeps/x86_64/memmove.S
index 9cc92ff9a9..ec2b624966 100644
--- a/sysdeps/x86_64/memmove.S
+++ b/sysdeps/x86_64/memmove.S
@@ -29,7 +29,7 @@
#define SECTION(p) p
#ifdef USE_MULTIARCH
-# if !IS_IN (libc)
+# if !(IS_IN (libc) || IS_IN (libcpu_rt_c))
# define MEMCPY_SYMBOL(p,s) memcpy
# endif
#else
@@ -39,8 +39,12 @@
# define MEMCPY_SYMBOL(p,s) memcpy
# endif
#endif
-#if !defined USE_MULTIARCH || !IS_IN (libc)
-# define MEMPCPY_SYMBOL(p,s) __mempcpy
+#if !defined USE_MULTIARCH || !(IS_IN (libc) || IS_IN (libcpu_rt_c))
+# if IS_IN (libcpu_rt_c)
+# define MEMPCPY_SYMBOL(p,s) mempcpy
+# else
+# define MEMPCPY_SYMBOL(p,s) __mempcpy
+# endif
#endif
#ifndef MEMMOVE_SYMBOL
# define MEMMOVE_CHK_SYMBOL(p,s) p
@@ -55,9 +59,11 @@ libc_hidden_builtin_def (memmove)
strong_alias (memmove, __memcpy)
libc_hidden_ver (memmove, memcpy)
# endif
+# if !IS_IN (libcpu_rt_c)
libc_hidden_def (__mempcpy)
weak_alias (__mempcpy, mempcpy)
libc_hidden_builtin_def (mempcpy)
+# endif
# if defined SHARED && IS_IN (libc)
# undef memcpy
diff --git a/sysdeps/x86_64/multiarch/Makefile b/sysdeps/x86_64/multiarch/Makefile
index 9bb6c8c3cd..8e86e44e33 100644
--- a/sysdeps/x86_64/multiarch/Makefile
+++ b/sysdeps/x86_64/multiarch/Makefile
@@ -69,5 +69,11 @@ endif
ifeq ($(subdir),cpu-rt-c)
libcpu-rt-c-sysdep_routines += memchr-sse2 memchr-avx2 \
memcmp-sse2 memcmp-ssse3 memcmp-sse4 \
- memcmp-avx2-movbe
+ memcmp-avx2-movbe memcpy-ssse3 \
+ memcpy-ssse3-back \
+ memmove-sse2-unaligned-erms \
+ memmove-ssse3 memmove-ssse3-back \
+ memmove-avx-unaligned-erms \
+ memmove-avx512-unaligned-erms \
+ memmove-avx512-no-vzeroupper
endif
diff --git a/sysdeps/x86_64/multiarch/memcpy-ssse3-back.S b/sysdeps/x86_64/multiarch/memcpy-ssse3-back.S
index 7e37035487..9bcd5957cf 100644
--- a/sysdeps/x86_64/multiarch/memcpy-ssse3-back.S
+++ b/sysdeps/x86_64/multiarch/memcpy-ssse3-back.S
@@ -19,7 +19,7 @@
#include <sysdep.h>
-#if IS_IN (libc)
+#if IS_IN (libc) || IS_IN (libcpu_rt_c)
#include "asm-syntax.h"
@@ -44,10 +44,12 @@
.section .text.ssse3,"ax",@progbits
#if !defined USE_AS_MEMPCPY && !defined USE_AS_MEMMOVE
+# if IS_IN (libc)
ENTRY (MEMPCPY_CHK)
cmpq %rdx, %rcx
jb HIDDEN_JUMPTARGET (__chk_fail)
END (MEMPCPY_CHK)
+# endif
ENTRY (MEMPCPY)
movq %rdi, %rax
@@ -56,7 +58,7 @@ ENTRY (MEMPCPY)
END (MEMPCPY)
#endif
-#if !defined USE_AS_BCOPY
+#if !defined USE_AS_BCOPY && IS_IN (libc)
ENTRY (MEMCPY_CHK)
cmpq %rdx, %rcx
jb HIDDEN_JUMPTARGET (__chk_fail)
diff --git a/sysdeps/x86_64/multiarch/memcpy-ssse3.S b/sysdeps/x86_64/multiarch/memcpy-ssse3.S
index 5dd209034b..988ce0fc83 100644
--- a/sysdeps/x86_64/multiarch/memcpy-ssse3.S
+++ b/sysdeps/x86_64/multiarch/memcpy-ssse3.S
@@ -19,7 +19,7 @@
#include <sysdep.h>
-#if IS_IN (libc)
+#if IS_IN (libc) || IS_IN (libcpu_rt_c)
#include "asm-syntax.h"
@@ -44,10 +44,12 @@
.section .text.ssse3,"ax",@progbits
#if !defined USE_AS_MEMPCPY && !defined USE_AS_MEMMOVE
+# if IS_IN (libc)
ENTRY (MEMPCPY_CHK)
cmpq %rdx, %rcx
jb HIDDEN_JUMPTARGET (__chk_fail)
END (MEMPCPY_CHK)
+# endif
ENTRY (MEMPCPY)
movq %rdi, %rax
@@ -56,7 +58,7 @@ ENTRY (MEMPCPY)
END (MEMPCPY)
#endif
-#if !defined USE_AS_BCOPY
+#if !defined USE_AS_BCOPY && IS_IN (libc)
ENTRY (MEMCPY_CHK)
cmpq %rdx, %rcx
jb HIDDEN_JUMPTARGET (__chk_fail)
diff --git a/sysdeps/x86_64/multiarch/memcpy.c b/sysdeps/x86_64/multiarch/memcpy.c
index 419f76aefc..ee3bb2706c 100644
--- a/sysdeps/x86_64/multiarch/memcpy.c
+++ b/sysdeps/x86_64/multiarch/memcpy.c
@@ -18,7 +18,7 @@
<http://www.gnu.org/licenses/>. */
/* Define multiple versions only for the definition in libc. */
-#if IS_IN (libc)
+#if IS_IN (libc) || IS_IN (libcpu_rt_c)
# define memcpy __redirect_memcpy
# include <string.h>
# undef memcpy
@@ -26,14 +26,20 @@
# define SYMBOL_NAME memcpy
# include "ifunc-memmove.h"
+# if IS_IN (libcpu_rt_c)
+# define __new_memcpy memcpy
+# endif
+
libc_ifunc_redirected (__redirect_memcpy, __new_memcpy,
IFUNC_SELECTOR ());
-# ifdef SHARED
+# if !IS_IN (libcpu_rt_c)
+# ifdef SHARED
__hidden_ver1 (__new_memcpy, __GI_memcpy, __redirect_memcpy)
__attribute__ ((visibility ("hidden")));
-# endif
+# endif
-# include <shlib-compat.h>
+# include <shlib-compat.h>
versioned_symbol (libc, __new_memcpy, memcpy, GLIBC_2_14);
+# endif
#endif
diff --git a/sysdeps/x86_64/multiarch/memmove-avx-unaligned-erms.S b/sysdeps/x86_64/multiarch/memmove-avx-unaligned-erms.S
index e195e93f15..e996ace136 100644
--- a/sysdeps/x86_64/multiarch/memmove-avx-unaligned-erms.S
+++ b/sysdeps/x86_64/multiarch/memmove-avx-unaligned-erms.S
@@ -1,4 +1,4 @@
-#if IS_IN (libc)
+#if IS_IN (libc) || IS_IN (libcpu_rt_c)
# define VEC_SIZE 32
# define VEC(i) ymm##i
# define VMOVNT vmovntdq
diff --git a/sysdeps/x86_64/multiarch/memmove-avx512-no-vzeroupper.S b/sysdeps/x86_64/multiarch/memmove-avx512-no-vzeroupper.S
index effc3ac2de..6cd1accfc5 100644
--- a/sysdeps/x86_64/multiarch/memmove-avx512-no-vzeroupper.S
+++ b/sysdeps/x86_64/multiarch/memmove-avx512-no-vzeroupper.S
@@ -18,15 +18,18 @@
#include <sysdep.h>
-#if IS_IN (libc)
+#if IS_IN (libc) || IS_IN (libcpu_rt_c)
# include "asm-syntax.h"
.section .text.avx512,"ax",@progbits
+# if IS_IN (libc)
ENTRY (__mempcpy_chk_avx512_no_vzeroupper)
cmpq %rdx, %rcx
jb HIDDEN_JUMPTARGET (__chk_fail)
END (__mempcpy_chk_avx512_no_vzeroupper)
+strong_alias (__memmove_chk_avx512_no_vzeroupper, __memcpy_chk_avx512_no_vzeroupper)
+# endif
ENTRY (__mempcpy_avx512_no_vzeroupper)
movq %rdi, %rax
@@ -34,10 +37,12 @@ ENTRY (__mempcpy_avx512_no_vzeroupper)
jmp L(start)
END (__mempcpy_avx512_no_vzeroupper)
+# if IS_IN (libc)
ENTRY (__memmove_chk_avx512_no_vzeroupper)
cmpq %rdx, %rcx
jb HIDDEN_JUMPTARGET (__chk_fail)
END (__memmove_chk_avx512_no_vzeroupper)
+# endif
ENTRY (__memmove_avx512_no_vzeroupper)
mov %rdi, %rax
@@ -411,5 +416,4 @@ L(gobble_256bytes_nt_loop_bkw):
END (__memmove_avx512_no_vzeroupper)
strong_alias (__memmove_avx512_no_vzeroupper, __memcpy_avx512_no_vzeroupper)
-strong_alias (__memmove_chk_avx512_no_vzeroupper, __memcpy_chk_avx512_no_vzeroupper)
#endif
diff --git a/sysdeps/x86_64/multiarch/memmove-avx512-unaligned-erms.S b/sysdeps/x86_64/multiarch/memmove-avx512-unaligned-erms.S
index aac1515cf6..95381d458e 100644
--- a/sysdeps/x86_64/multiarch/memmove-avx512-unaligned-erms.S
+++ b/sysdeps/x86_64/multiarch/memmove-avx512-unaligned-erms.S
@@ -1,4 +1,4 @@
-#if IS_IN (libc)
+#if IS_IN (libc) || IS_IN (libcpu_rt_c)
# define VEC_SIZE 64
# define VEC(i) zmm##i
# define VMOVNT vmovntdq
diff --git a/sysdeps/x86_64/multiarch/memmove-sse2-unaligned-erms.S b/sysdeps/x86_64/multiarch/memmove-sse2-unaligned-erms.S
index 7c6163ddcb..eae941e58e 100644
--- a/sysdeps/x86_64/multiarch/memmove-sse2-unaligned-erms.S
+++ b/sysdeps/x86_64/multiarch/memmove-sse2-unaligned-erms.S
@@ -16,7 +16,7 @@
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
-#if IS_IN (libc)
+#if IS_IN (libc) || IS_IN (libcpu_rt_c)
# define MEMMOVE_SYMBOL(p,s) p##_sse2_##s
#else
weak_alias (__mempcpy, mempcpy)
diff --git a/sysdeps/x86_64/multiarch/memmove-vec-unaligned-erms.S b/sysdeps/x86_64/multiarch/memmove-vec-unaligned-erms.S
index e2ede45e9f..ada93ea6ad 100644
--- a/sysdeps/x86_64/multiarch/memmove-vec-unaligned-erms.S
+++ b/sysdeps/x86_64/multiarch/memmove-vec-unaligned-erms.S
@@ -131,7 +131,7 @@ L(start):
jb L(less_vec)
cmpq $(VEC_SIZE * 2), %rdx
ja L(more_2x_vec)
-#if !defined USE_MULTIARCH || !IS_IN (libc)
+#if !defined USE_MULTIARCH || !(IS_IN (libc) || IS_IN (libcpu_rt_c))
L(last_2x_vec):
#endif
/* From VEC and to 2 * VEC. No branch when size == VEC_SIZE. */
@@ -140,18 +140,20 @@ L(last_2x_vec):
VMOVU %VEC(0), (%rdi)
VMOVU %VEC(1), -VEC_SIZE(%rdi,%rdx)
VZEROUPPER
-#if !defined USE_MULTIARCH || !IS_IN (libc)
+#if !defined USE_MULTIARCH || !(IS_IN (libc) || IS_IN (libcpu_rt_c))
L(nop):
#endif
ret
-#if defined USE_MULTIARCH && IS_IN (libc)
+#if defined USE_MULTIARCH && (IS_IN (libc) || IS_IN (libcpu_rt_c))
END (MEMMOVE_SYMBOL (__memmove, unaligned))
# if VEC_SIZE == 16
+# if IS_IN (libc)
ENTRY (__mempcpy_chk_erms)
cmpq %rdx, %rcx
jb HIDDEN_JUMPTARGET (__chk_fail)
END (__mempcpy_chk_erms)
+# endif
/* Only used to measure performance of REP MOVSB. */
ENTRY (__mempcpy_erms)
@@ -163,10 +165,12 @@ ENTRY (__mempcpy_erms)
jmp L(start_movsb)
END (__mempcpy_erms)
+# if IS_IN (libc)
ENTRY (__memmove_chk_erms)
cmpq %rdx, %rcx
jb HIDDEN_JUMPTARGET (__chk_fail)
END (__memmove_chk_erms)
+# endif
ENTRY (__memmove_erms)
movq %rdi, %rax
@@ -195,10 +199,12 @@ L(movsb_backward):
ret
END (__memmove_erms)
strong_alias (__memmove_erms, __memcpy_erms)
+# if IS_IN (libc)
strong_alias (__memmove_chk_erms, __memcpy_chk_erms)
+# endif
# endif
-# ifdef SHARED
+# if defined SHARED && IS_IN (libc)
ENTRY (MEMMOVE_CHK_SYMBOL (__mempcpy_chk, unaligned_erms))
cmpq %rdx, %rcx
jb HIDDEN_JUMPTARGET (__chk_fail)
@@ -212,10 +218,12 @@ ENTRY (MEMMOVE_SYMBOL (__mempcpy, unaligned_erms))
END (MEMMOVE_SYMBOL (__mempcpy, unaligned_erms))
# ifdef SHARED
+# if IS_IN (libc)
ENTRY (MEMMOVE_CHK_SYMBOL (__memmove_chk, unaligned_erms))
cmpq %rdx, %rcx
jb HIDDEN_JUMPTARGET (__chk_fail)
END (MEMMOVE_CHK_SYMBOL (__memmove_chk, unaligned_erms))
+# endif
# endif
ENTRY (MEMMOVE_SYMBOL (__memmove, unaligned_erms))
@@ -321,7 +329,7 @@ L(between_2_3):
movw %si, (%rdi)
ret
-#if defined USE_MULTIARCH && IS_IN (libc)
+#if defined USE_MULTIARCH && (IS_IN (libc) || IS_IN (libcpu_rt_c))
L(movsb_more_2x_vec):
cmpq $REP_MOVSB_THRESHOLD, %rdx
ja L(movsb)
@@ -392,7 +400,8 @@ L(more_8x_vec):
subq %r8, %rdi
/* Adjust length. */
addq %r8, %rdx
-#if (defined USE_MULTIARCH || VEC_SIZE == 16) && IS_IN (libc)
+#if ((defined USE_MULTIARCH || VEC_SIZE == 16) \
+ && (IS_IN (libc) || IS_IN (libcpu_rt_c)))
/* Check non-temporal store threshold. */
cmpq __x86_shared_non_temporal_threshold(%rip), %rdx
ja L(large_forward)
@@ -444,7 +453,8 @@ L(more_8x_vec_backward):
subq %r8, %r9
/* Adjust length. */
subq %r8, %rdx
-#if (defined USE_MULTIARCH || VEC_SIZE == 16) && IS_IN (libc)
+#if ((defined USE_MULTIARCH || VEC_SIZE == 16) \
+ && (IS_IN (libc) || IS_IN (libcpu_rt_c)))
/* Check non-temporal store threshold. */
cmpq __x86_shared_non_temporal_threshold(%rip), %rdx
ja L(large_backward)
@@ -474,7 +484,8 @@ L(loop_4x_vec_backward):
VZEROUPPER
ret
-#if (defined USE_MULTIARCH || VEC_SIZE == 16) && IS_IN (libc)
+#if ((defined USE_MULTIARCH || VEC_SIZE == 16) \
+ && (IS_IN (libc) || IS_IN (libcpu_rt_c)))
L(large_forward):
/* Don't use non-temporal store if there is overlap between
destination and source since destination may be in cache
@@ -547,16 +558,16 @@ L(loop_large_backward):
#endif
END (MEMMOVE_SYMBOL (__memmove, unaligned_erms))
-#if IS_IN (libc)
+#if IS_IN (libc) || IS_IN (libcpu_rt_c)
# ifdef USE_MULTIARCH
strong_alias (MEMMOVE_SYMBOL (__memmove, unaligned_erms),
MEMMOVE_SYMBOL (__memcpy, unaligned_erms))
-# ifdef SHARED
+# if defined SHARED && IS_IN (libc)
strong_alias (MEMMOVE_SYMBOL (__memmove_chk, unaligned_erms),
MEMMOVE_SYMBOL (__memcpy_chk, unaligned_erms))
# endif
# endif
-# ifdef SHARED
+# if defined SHARED && IS_IN (libc)
strong_alias (MEMMOVE_CHK_SYMBOL (__memmove_chk, unaligned),
MEMMOVE_CHK_SYMBOL (__memcpy_chk, unaligned))
# endif
diff --git a/sysdeps/x86_64/multiarch/memmove.c b/sysdeps/x86_64/multiarch/memmove.c
index d512228eae..a4fad5ae60 100644
--- a/sysdeps/x86_64/multiarch/memmove.c
+++ b/sysdeps/x86_64/multiarch/memmove.c
@@ -18,7 +18,7 @@
<http://www.gnu.org/licenses/>. */
/* Define multiple versions only for the definition in libc. */
-#if IS_IN (libc)
+#if IS_IN (libc) || IS_IN (libcpu_rt_c)
# define memmove __redirect_memmove
# include <string.h>
# undef memmove
@@ -26,12 +26,18 @@
# define SYMBOL_NAME memmove
# include "ifunc-memmove.h"
+# if IS_IN (libcpu_rt_c)
+# define __libc_memmove memmove
+# endif
+
libc_ifunc_redirected (__redirect_memmove, __libc_memmove,
IFUNC_SELECTOR ());
+# if !IS_IN (libcpu_rt_c)
strong_alias (__libc_memmove, memmove);
-# ifdef SHARED
+# ifdef SHARED
__hidden_ver1 (__libc_memmove, __GI_memmove, __redirect_memmove)
__attribute__ ((visibility ("hidden")));
+# endif
# endif
#endif
diff --git a/sysdeps/x86_64/multiarch/mempcpy.c b/sysdeps/x86_64/multiarch/mempcpy.c
index 9fe41dda82..fe3ece0774 100644
--- a/sysdeps/x86_64/multiarch/mempcpy.c
+++ b/sysdeps/x86_64/multiarch/mempcpy.c
@@ -18,7 +18,7 @@
<http://www.gnu.org/licenses/>. */
/* Define multiple versions only for the definition in libc. */
-#if IS_IN (libc)
+#if IS_IN (libc) || IS_IN (libcpu_rt_c)
# define mempcpy __redirect_mempcpy
# define __mempcpy __redirect___mempcpy
# define NO_MEMPCPY_STPCPY_REDIRECT
@@ -30,13 +30,19 @@
# define SYMBOL_NAME mempcpy
# include "ifunc-memmove.h"
+# if IS_IN (libcpu_rt_c)
+# define __mempcpy mempcpy
+# endif
+
libc_ifunc_redirected (__redirect_mempcpy, __mempcpy, IFUNC_SELECTOR ());
+# if !IS_IN (libcpu_rt_c)
weak_alias (__mempcpy, mempcpy)
-# ifdef SHARED
+# ifdef SHARED
__hidden_ver1 (__mempcpy, __GI___mempcpy, __redirect___mempcpy)
__attribute__ ((visibility ("hidden")));
__hidden_ver1 (mempcpy, __GI_mempcpy, __redirect_mempcpy)
__attribute__ ((visibility ("hidden")));
+# endif
# endif
#endif
--
2.17.1
^ permalink raw reply [flat|nested] 33+ messages in thread
* [PATCH 16/20] libcpu-rt-c/x86-64: Add strnlen
2018-06-12 22:19 [PATCH 00/20] RFC: Add the CPU run-time library for C H.J. Lu
` (18 preceding siblings ...)
2018-06-12 22:20 ` [PATCH 11/20] libcpu-rt-c/x86-64: Add strchr H.J. Lu
@ 2018-06-12 22:20 ` H.J. Lu
2018-06-13 6:50 ` [PATCH 00/20] RFC: Add the CPU run-time library for C Florian Weimer
2018-06-18 17:09 ` Carlos O'Donell
21 siblings, 0 replies; 33+ messages in thread
From: H.J. Lu @ 2018-06-12 22:20 UTC (permalink / raw)
To: libc-alpha
* sysdeps/x86_64/Makefile (cpu-rt-c-routines): Add strnlen.
* sysdeps/x86_64/multiarch/Makefile
(libcpu-rt-c-sysdep_routines): Add strnlen-sse2 and
strnlen-avx2.
* sysdeps/x86_64/multiarch/strnlen-sse2.S: Support libcpu-rt-c.
* sysdeps/x86_64/multiarch/strnlen.c: Likewise.
---
sysdeps/x86_64/Makefile | 2 +-
sysdeps/x86_64/multiarch/Makefile | 3 ++-
sysdeps/x86_64/multiarch/strnlen-sse2.S | 2 +-
sysdeps/x86_64/multiarch/strnlen.c | 20 ++++++++++++++++++--
4 files changed, 22 insertions(+), 5 deletions(-)
diff --git a/sysdeps/x86_64/Makefile b/sysdeps/x86_64/Makefile
index ea0d7a31dc..1a5720bbac 100644
--- a/sysdeps/x86_64/Makefile
+++ b/sysdeps/x86_64/Makefile
@@ -148,7 +148,7 @@ endif
ifeq ($(subdir),cpu-rt-c)
cpu-rt-c-routines += memchr memcmp memcpy memmove mempcpy memrchr \
- memset strcat strchr strcmp strcpy strlen \
+ memset strcat strchr strcmp strcpy strlen strnlen \
wmemset
# For the CPU run-time tests.
diff --git a/sysdeps/x86_64/multiarch/Makefile b/sysdeps/x86_64/multiarch/Makefile
index 10de1f3af3..1c902eec4e 100644
--- a/sysdeps/x86_64/multiarch/Makefile
+++ b/sysdeps/x86_64/multiarch/Makefile
@@ -88,5 +88,6 @@ libcpu-rt-c-sysdep_routines += memchr-sse2 memchr-avx2 \
strcmp-sse2-unaligned strcmp-ssse3 \
strcmp-sse4_2 strcmp-avx2 strcpy-sse2 \
strcpy-sse2-unaligned strcpy-ssse3 \
- strlen-sse2 strlen-avx2
+ strlen-sse2 strlen-avx2 \
+ strnlen-sse2 strnlen-avx2
endif
diff --git a/sysdeps/x86_64/multiarch/strnlen-sse2.S b/sysdeps/x86_64/multiarch/strnlen-sse2.S
index 41f33f6f6f..a5cba9a698 100644
--- a/sysdeps/x86_64/multiarch/strnlen-sse2.S
+++ b/sysdeps/x86_64/multiarch/strnlen-sse2.S
@@ -16,7 +16,7 @@
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
-#if IS_IN (libc)
+#if IS_IN (libc) || IS_IN (libcpu_rt_c)
# define __strnlen __strnlen_sse2
# undef weak_alias
diff --git a/sysdeps/x86_64/multiarch/strnlen.c b/sysdeps/x86_64/multiarch/strnlen.c
index 3ab94ce230..5752764d2b 100644
--- a/sysdeps/x86_64/multiarch/strnlen.c
+++ b/sysdeps/x86_64/multiarch/strnlen.c
@@ -18,7 +18,7 @@
<http://www.gnu.org/licenses/>. */
/* Define multiple versions only for the definition in libc. */
-#if IS_IN (libc)
+#if IS_IN (libc) || IS_IN (libcpu_rt_c)
# define strnlen __redirect_strnlen
# define __strnlen __redirect___strnlen
# include <string.h>
@@ -28,12 +28,28 @@
# define SYMBOL_NAME strnlen
# include "ifunc-avx2.h"
+#if IS_IN (libcpu_rt_c)
+# define __strnlen strnlen
+#endif
+
libc_ifunc_redirected (__redirect_strnlen, __strnlen, IFUNC_SELECTOR ());
+
+# if IS_IN (libcpu_rt_c)
+# ifdef SHARED
+__hidden_ver1 (strnlen, __strnlen, __redirect___strnlen)
+ __attribute__((visibility ("hidden")));
+# else
+# undef __strnlen
+/* Needed by strncpy-c.o. */
+strong_alias (strnlen, __strnlen);
+# endif
+# else
+# ifdef SHARED
weak_alias (__strnlen, strnlen);
-# ifdef SHARED
__hidden_ver1 (__strnlen, __GI___strnlen, __redirect___strnlen)
__attribute__((visibility ("hidden")));
__hidden_ver1 (strnlen, __GI_strnlen, __redirect_strnlen)
__attribute__((weak, visibility ("hidden")));
+# endif
# endif
#endif
--
2.17.1
^ permalink raw reply [flat|nested] 33+ messages in thread
* [PATCH 19/20] libcpu-rt-c/x86-64: Add strncpy
2018-06-12 22:19 [PATCH 00/20] RFC: Add the CPU run-time library for C H.J. Lu
` (7 preceding siblings ...)
2018-06-12 22:20 ` [PATCH 10/20] libcpu-rt-c: Don't use IFUNC memcmp in init_cpu_features H.J. Lu
@ 2018-06-12 22:20 ` H.J. Lu
2018-06-12 22:20 ` [PATCH 17/20] libcpu-rt-c/x86-64: Add strncat H.J. Lu
` (12 subsequent siblings)
21 siblings, 0 replies; 33+ messages in thread
From: H.J. Lu @ 2018-06-12 22:20 UTC (permalink / raw)
To: libc-alpha
* sysdeps/x86_64/Makefile (cpu-rt-c-routines): Add strncpy.
* sysdeps/x86_64/multiarch/Makefile
(libcpu-rt-c-sysdep_routines): Add strncpy-c,
strncpy-sse2-unaligned and strncpy-ssse3.
* sysdeps/x86_64/multiarch/strncpy.c: Support libcpu-rt-c.
---
sysdeps/x86_64/Makefile | 2 +-
sysdeps/x86_64/multiarch/Makefile | 4 +++-
sysdeps/x86_64/multiarch/strncpy.c | 4 ++--
3 files changed, 6 insertions(+), 4 deletions(-)
diff --git a/sysdeps/x86_64/Makefile b/sysdeps/x86_64/Makefile
index 4e872b1220..17d3a07894 100644
--- a/sysdeps/x86_64/Makefile
+++ b/sysdeps/x86_64/Makefile
@@ -149,7 +149,7 @@ endif
ifeq ($(subdir),cpu-rt-c)
cpu-rt-c-routines += memchr memcmp memcpy memmove mempcpy memrchr \
memset strcat strchr strcmp strcpy strlen strncat \
- strnlen strncmp \
+ strnlen strncmp strncpy \
wmemset
# For the CPU run-time tests.
diff --git a/sysdeps/x86_64/multiarch/Makefile b/sysdeps/x86_64/multiarch/Makefile
index e3c197ba84..de4938b3eb 100644
--- a/sysdeps/x86_64/multiarch/Makefile
+++ b/sysdeps/x86_64/multiarch/Makefile
@@ -91,5 +91,7 @@ libcpu-rt-c-sysdep_routines += memchr-sse2 memchr-avx2 \
strlen-sse2 strlen-avx2 strncat-c \
strncat-sse2-unaligned strncat-ssse3 \
strnlen-sse2 strnlen-avx2 strncmp-sse2 \
- strncmp-ssse3 strncmp-sse4_2 strncmp-avx2
+ strncmp-ssse3 strncmp-sse4_2 strncmp-avx2 \
+ strncpy-c strncpy-sse2-unaligned \
+ strncpy-ssse3
endif
diff --git a/sysdeps/x86_64/multiarch/strncpy.c b/sysdeps/x86_64/multiarch/strncpy.c
index 3c3de8b18e..30bd615f99 100644
--- a/sysdeps/x86_64/multiarch/strncpy.c
+++ b/sysdeps/x86_64/multiarch/strncpy.c
@@ -18,7 +18,7 @@
<http://www.gnu.org/licenses/>. */
/* Define multiple versions only for the definition in libc. */
-#if IS_IN (libc)
+#if IS_IN (libc) || IS_IN (libcpu_rt_c)
# define strncpy __redirect_strncpy
# include <string.h>
# undef strncpy
@@ -28,7 +28,7 @@
libc_ifunc_redirected (__redirect_strncpy, strncpy, IFUNC_SELECTOR ());
-# ifdef SHARED
+# if defined SHARED && !IS_IN (libcpu_rt_c)
__hidden_ver1 (strncpy, __GI_strncpy, __redirect_strncpy)
__attribute__ ((visibility ("hidden")));
# endif
--
2.17.1
^ permalink raw reply [flat|nested] 33+ messages in thread
* Re: [PATCH 01/20] Initial empty CPU run-time library for C: libcpu-rt-c
2018-06-12 22:20 ` [PATCH 01/20] Initial empty CPU run-time library for C: libcpu-rt-c H.J. Lu
@ 2018-06-12 23:21 ` Joseph Myers
2018-06-13 11:21 ` H.J. Lu
0 siblings, 1 reply; 33+ messages in thread
From: Joseph Myers @ 2018-06-12 23:21 UTC (permalink / raw)
To: H.J. Lu; +Cc: libc-alpha
Any new configure option needs documentation in install.texi with INSTALL
regenerated. Any such new feature needs documenting in NEWS as well.
I'd expect any such new library to have ABI test baselines. If for some
reason ABI tests don't get run for this library, that's also a problem;
you said it can be linked directly with applications, which means it needs
to be ABI tested to make sure the ABI is properly stable.
--
Joseph S. Myers
joseph@codesourcery.com
^ permalink raw reply [flat|nested] 33+ messages in thread
* Re: [PATCH 00/20] RFC: Add the CPU run-time library for C
2018-06-12 22:19 [PATCH 00/20] RFC: Add the CPU run-time library for C H.J. Lu
` (19 preceding siblings ...)
2018-06-12 22:20 ` [PATCH 16/20] libcpu-rt-c/x86-64: Add strnlen H.J. Lu
@ 2018-06-13 6:50 ` Florian Weimer
2018-06-13 10:14 ` H.J. Lu
2018-06-18 17:09 ` Carlos O'Donell
21 siblings, 1 reply; 33+ messages in thread
From: Florian Weimer @ 2018-06-13 6:50 UTC (permalink / raw)
To: H.J. Lu, libc-alpha
On 06/13/2018 12:19 AM, H.J. Lu wrote:
> The current glibc has memory and string functions highly optimized for
> the current processors on the market. But it takes years for released
> glibc to be installed on end-users machines. In 2018, many machines
> with the latest Intel processors are still running glibc 2.17, which
> was released in February, 2013.
>
> This patch set introduces the CPU run-time library for C, libcpu-rt-c.
> libcpu-rt-c contains a subset of the C library with the optimized
> functions. The resulting libcpu-rt-c.so is binary compatible with
> older versions of libc.so so that libcpu-rt-c.so can be used with
> LD_PRELOAD or linked directly with applications. For some workloads,
> LD_PRELOAD=libcpu-rt-c.so has shown to improve performance by as much
> as 20% on Skylake machine.
What do you gain from adding this to glibc?
Old systems will not have sufficiently new compilers and linkers, and
they will not be able to directly build glibc and this new library.
It seems that this library does not define its own ABI, so it does not
have to be tied to the glibc release schedule, but putting it into the
source tree implies such alignment.
I don't doubt that this can be useful (but I doubt it will completely
stop string function backports), but building and shipping this library
as part of glibc seems detrimental to its goals.
Thanks,
Florian
^ permalink raw reply [flat|nested] 33+ messages in thread
* Re: [PATCH 00/20] RFC: Add the CPU run-time library for C
2018-06-13 6:50 ` [PATCH 00/20] RFC: Add the CPU run-time library for C Florian Weimer
@ 2018-06-13 10:14 ` H.J. Lu
2018-06-13 12:03 ` Adhemerval Zanella
2018-06-13 13:25 ` Florian Weimer
0 siblings, 2 replies; 33+ messages in thread
From: H.J. Lu @ 2018-06-13 10:14 UTC (permalink / raw)
To: Florian Weimer; +Cc: GNU C Library
On Tue, Jun 12, 2018 at 11:50 PM, Florian Weimer <fweimer@redhat.com> wrote:
> On 06/13/2018 12:19 AM, H.J. Lu wrote:
>>
>> The current glibc has memory and string functions highly optimized for
>> the current processors on the market. But it takes years for released
>> glibc to be installed on end-users machines. In 2018, many machines
>> with the latest Intel processors are still running glibc 2.17, which
>> was released in February, 2013.
>>
>> This patch set introduces the CPU run-time library for C, libcpu-rt-c.
>> libcpu-rt-c contains a subset of the C library with the optimized
>> functions. The resulting libcpu-rt-c.so is binary compatible with
>> older versions of libc.so so that libcpu-rt-c.so can be used with
>> LD_PRELOAD or linked directly with applications. For some workloads,
>> LD_PRELOAD=libcpu-rt-c.so has shown to improve performance by as much
>> as 20% on Skylake machine.
>
>
> What do you gain from adding this to glibc?
It uses what we have in glibc. There is no need for separate implementations.
> Old systems will not have sufficiently new compilers and linkers, and they
> will not be able to directly build glibc and this new library.
libcpu-rt-c can be built on any systems with required GCC and binutils.
The resulting libcpu-rt-c.so is binary compatible with ALL versions of
x86-64 glibcs.
> It seems that this library does not define its own ABI, so it does not have
> to be tied to the glibc release schedule, but putting it into the source
> tree implies such alignment.
I don't expect there will be formal releases of libcpu-rt-c. On the other
hand, libcpu-rt-c is ready to use at any time. Initially, it has to be built
as the part of glibc. Depending on its feedbacks, it may be changed
to just build libcpu-rt-c without building the rest of glibc.
> I don't doubt that this can be useful (but I doubt it will completely stop
> string function backports), but building and shipping this library as part
> of glibc seems detrimental to its goals.
I don't expect it will be shipped as the part of glibc. But when people
ask for better string/memory functions on Skylake running RHEL 7, I
can point them to libcpu-rt-c or I can build one for them on Fedora 28.
--
H.J.
^ permalink raw reply [flat|nested] 33+ messages in thread
* Re: [PATCH 01/20] Initial empty CPU run-time library for C: libcpu-rt-c
2018-06-12 23:21 ` Joseph Myers
@ 2018-06-13 11:21 ` H.J. Lu
0 siblings, 0 replies; 33+ messages in thread
From: H.J. Lu @ 2018-06-13 11:21 UTC (permalink / raw)
To: Joseph Myers; +Cc: GNU C Library
On Tue, Jun 12, 2018 at 4:20 PM, Joseph Myers <joseph@codesourcery.com> wrote:
> Any new configure option needs documentation in install.texi with INSTALL
> regenerated. Any such new feature needs documenting in NEWS as well.
Here is the patch to document --enable-cpu-rt:
https://github.com/hjl-tools/glibc/commit/2d6391762652a39fb8b64b3a87da4b0d92c53616
> I'd expect any such new library to have ABI test baselines. If for some
> reason ABI tests don't get run for this library, that's also a problem;
> you said it can be linked directly with applications, which means it needs
> to be ABI tested to make sure the ABI is properly stable.
>
Here is the patch to add ABI test:
https://github.com/hjl-tools/glibc/commit/a14b8035029ffc248fef53772c557483bcb45985
I will collect more feedbacks and submit a new set of patches.
--
H.J.
^ permalink raw reply [flat|nested] 33+ messages in thread
* Re: [PATCH 00/20] RFC: Add the CPU run-time library for C
2018-06-13 10:14 ` H.J. Lu
@ 2018-06-13 12:03 ` Adhemerval Zanella
2018-06-13 12:31 ` H.J. Lu
2018-06-13 13:25 ` Florian Weimer
1 sibling, 1 reply; 33+ messages in thread
From: Adhemerval Zanella @ 2018-06-13 12:03 UTC (permalink / raw)
To: libc-alpha
On 13/06/2018 07:13, H.J. Lu wrote:
> On Tue, Jun 12, 2018 at 11:50 PM, Florian Weimer <fweimer@redhat.com> wrote:
>> On 06/13/2018 12:19 AM, H.J. Lu wrote:
>>>
>>> The current glibc has memory and string functions highly optimized for
>>> the current processors on the market. But it takes years for released
>>> glibc to be installed on end-users machines. In 2018, many machines
>>> with the latest Intel processors are still running glibc 2.17, which
>>> was released in February, 2013.
>>>
>>> This patch set introduces the CPU run-time library for C, libcpu-rt-c.
>>> libcpu-rt-c contains a subset of the C library with the optimized
>>> functions. The resulting libcpu-rt-c.so is binary compatible with
>>> older versions of libc.so so that libcpu-rt-c.so can be used with
>>> LD_PRELOAD or linked directly with applications. For some workloads,
>>> LD_PRELOAD=libcpu-rt-c.so has shown to improve performance by as much
>>> as 20% on Skylake machine.
>>
>>
>> What do you gain from adding this to glibc?
>
> It uses what we have in glibc. There is no need for separate implementations.
At least for ARM we have cortex-strings [1] with a more permissive licensing.
We usually try to update this repository first with arm related string
optimizations and sync later with other projects (glibc, android, etc.).
It does not have ifunc support, since so far it was not required (since it
also did not had any update for different chips like falkor or thunder), but
I can't see why it can't add support for runtime selection.
While I see the advantages of adding on glibc to avoid the double effort,
I really think this kind of framework is better served as an external project.
It adds even more complexity (IS_IN (libcpu_rt_c)) on current GLIBC ifunc code
(which is somewhat convoluted) and it is not clear how easy it would be to
distribute it on a usual way (a distribution would need to create another package
with downloads a different glibc release than system to build and extract the
library itself).
[1] https://git.linaro.org/toolchain/cortex-strings.git
>
>> Old systems will not have sufficiently new compilers and linkers, and they
>> will not be able to directly build glibc and this new library.
>
> libcpu-rt-c can be built on any systems with required GCC and binutils.
> The resulting libcpu-rt-c.so is binary compatible with ALL versions of
> x86-64 glibcs.
>
>> It seems that this library does not define its own ABI, so it does not have
>> to be tied to the glibc release schedule, but putting it into the source
>> tree implies such alignment.
>
> I don't expect there will be formal releases of libcpu-rt-c. On the other
> hand, libcpu-rt-c is ready to use at any time. Initially, it has to be built
> as the part of glibc. Depending on its feedbacks, it may be changed
> to just build libcpu-rt-c without building the rest of glibc.
>
>> I don't doubt that this can be useful (but I doubt it will completely stop
>> string function backports), but building and shipping this library as part
>> of glibc seems detrimental to its goals.
>
> I don't expect it will be shipped as the part of glibc. But when people
> ask for better string/memory functions on Skylake running RHEL 7, I
> can point them to libcpu-rt-c or I can build one for them on Fedora 28.
>
With the expectation on non formal releases, no ready useful gain in a default
installation (it only makes sense if you download/build a more recent glibc
version than system onde) and the idea of ready availability it really indicates
me to push this an external project.
^ permalink raw reply [flat|nested] 33+ messages in thread
* Re: [PATCH 00/20] RFC: Add the CPU run-time library for C
2018-06-13 12:03 ` Adhemerval Zanella
@ 2018-06-13 12:31 ` H.J. Lu
0 siblings, 0 replies; 33+ messages in thread
From: H.J. Lu @ 2018-06-13 12:31 UTC (permalink / raw)
To: Adhemerval Zanella; +Cc: GNU C Library
On Wed, Jun 13, 2018 at 5:03 AM, Adhemerval Zanella
<adhemerval.zanella@linaro.org> wrote:
>
>
> On 13/06/2018 07:13, H.J. Lu wrote:
>> On Tue, Jun 12, 2018 at 11:50 PM, Florian Weimer <fweimer@redhat.com> wrote:
>>> On 06/13/2018 12:19 AM, H.J. Lu wrote:
>>>>
>>>> The current glibc has memory and string functions highly optimized for
>>>> the current processors on the market. But it takes years for released
>>>> glibc to be installed on end-users machines. In 2018, many machines
>>>> with the latest Intel processors are still running glibc 2.17, which
>>>> was released in February, 2013.
>>>>
>>>> This patch set introduces the CPU run-time library for C, libcpu-rt-c.
>>>> libcpu-rt-c contains a subset of the C library with the optimized
>>>> functions. The resulting libcpu-rt-c.so is binary compatible with
>>>> older versions of libc.so so that libcpu-rt-c.so can be used with
>>>> LD_PRELOAD or linked directly with applications. For some workloads,
>>>> LD_PRELOAD=libcpu-rt-c.so has shown to improve performance by as much
>>>> as 20% on Skylake machine.
>>>
>>>
>>> What do you gain from adding this to glibc?
>>
>> It uses what we have in glibc. There is no need for separate implementations.
>
> At least for ARM we have cortex-strings [1] with a more permissive licensing.
> We usually try to update this repository first with arm related string
> optimizations and sync later with other projects (glibc, android, etc.).
>
> It does not have ifunc support, since so far it was not required (since it
> also did not had any update for different chips like falkor or thunder), but
> I can't see why it can't add support for runtime selection.
>
> While I see the advantages of adding on glibc to avoid the double effort,
> I really think this kind of framework is better served as an external project.
> It adds even more complexity (IS_IN (libcpu_rt_c)) on current GLIBC ifunc code
The framework for IFUNC and tunables are in glibc. The optimized functions
are in glibc. I can extract the relevant parts from glibc to create a separate
git repo. Then I need to decide if I should fork or keep updating it
from glibc.
It is a duplicated effort for no good values.
> (which is somewhat convoluted) and it is not clear how easy it would be to
> distribute it on a usual way (a distribution would need to create another package
> with downloads a different glibc release than system to build and extract the
> library itself).
>
> [1] https://git.linaro.org/toolchain/cortex-strings.git
>
>>
>>> Old systems will not have sufficiently new compilers and linkers, and they
>>> will not be able to directly build glibc and this new library.
>>
>> libcpu-rt-c can be built on any systems with required GCC and binutils.
>> The resulting libcpu-rt-c.so is binary compatible with ALL versions of
>> x86-64 glibcs.
>>
>>> It seems that this library does not define its own ABI, so it does not have
>>> to be tied to the glibc release schedule, but putting it into the source
>>> tree implies such alignment.
>>
>> I don't expect there will be formal releases of libcpu-rt-c. On the other
>> hand, libcpu-rt-c is ready to use at any time. Initially, it has to be built
>> as the part of glibc. Depending on its feedbacks, it may be changed
>> to just build libcpu-rt-c without building the rest of glibc.
>>
>>> I don't doubt that this can be useful (but I doubt it will completely stop
>>> string function backports), but building and shipping this library as part
>>> of glibc seems detrimental to its goals.
>>
>> I don't expect it will be shipped as the part of glibc. But when people
>> ask for better string/memory functions on Skylake running RHEL 7, I
>> can point them to libcpu-rt-c or I can build one for them on Fedora 28.
>>
>
> With the expectation on non formal releases, no ready useful gain in a default
> installation (it only makes sense if you download/build a more recent glibc
> version than system onde) and the idea of ready availability it really indicates
> me to push this an external project.
I have no problem to maintain it as a branch on github and point people
to it when asked.
--
H.J.
^ permalink raw reply [flat|nested] 33+ messages in thread
* Re: [PATCH 00/20] RFC: Add the CPU run-time library for C
2018-06-13 10:14 ` H.J. Lu
2018-06-13 12:03 ` Adhemerval Zanella
@ 2018-06-13 13:25 ` Florian Weimer
2018-06-13 13:41 ` H.J. Lu
2018-06-13 14:20 ` Siddhesh Poyarekar
1 sibling, 2 replies; 33+ messages in thread
From: Florian Weimer @ 2018-06-13 13:25 UTC (permalink / raw)
To: H.J. Lu; +Cc: GNU C Library
On 06/13/2018 12:13 PM, H.J. Lu wrote:
> libcpu-rt-c can be built on any systems with required GCC and binutils.
> The resulting libcpu-rt-c.so is binary compatible with ALL versions of
> x86-64 glibcs.
Yes, but that doesn't work for every distribution.
>> I don't doubt that this can be useful (but I doubt it will completely stop
>> string function backports), but building and shipping this library as part
>> of glibc seems detrimental to its goals.
>
> I don't expect it will be shipped as the part of glibc. But when people
> ask for better string/memory functions on Skylake running RHEL 7, I
> can point them to libcpu-rt-c or I can build one for them on Fedora 28.
We cannot produce supportable builds on Fedora 28. Supported builds
must come out of the build system. It so happens that we have Developer
Toolset (DTS) which matches upstream version requirements, and that is
available in certain product build environments, so we could produce
supportable builds with this hybrid approach. But to give a different
example: I don't think Debian has this capability, particularly when it
comes to binutils.
All that wouldn't be a problem if the changes are fairly isolated and
there wouldn't be tons of conditionals in generic code, but the current
approach this is implemented looks like quite a bit of an additional
burden, for each architecture that chooses to participate.
It would be another thing to build a static PIC string library from
sources and link that both into libc.so and this new support library.
Then the build process would at least be aligned. But I don't think our
current build system is up for that.
Thanks,
Florian
^ permalink raw reply [flat|nested] 33+ messages in thread
* Re: [PATCH 00/20] RFC: Add the CPU run-time library for C
2018-06-13 13:25 ` Florian Weimer
@ 2018-06-13 13:41 ` H.J. Lu
2018-06-13 14:20 ` Siddhesh Poyarekar
1 sibling, 0 replies; 33+ messages in thread
From: H.J. Lu @ 2018-06-13 13:41 UTC (permalink / raw)
To: Florian Weimer; +Cc: GNU C Library
On Wed, Jun 13, 2018 at 6:25 AM, Florian Weimer <fweimer@redhat.com> wrote:
> On 06/13/2018 12:13 PM, H.J. Lu wrote:
>
>> libcpu-rt-c can be built on any systems with required GCC and binutils.
>> The resulting libcpu-rt-c.so is binary compatible with ALL versions of
>> x86-64 glibcs.
>
>
> Yes, but that doesn't work for every distribution.
True.
>>> I don't doubt that this can be useful (but I doubt it will completely
>>> stop
>>> string function backports), but building and shipping this library as
>>> part
>>> of glibc seems detrimental to its goals.
>>
>>
>> I don't expect it will be shipped as the part of glibc. But when people
>> ask for better string/memory functions on Skylake running RHEL 7, I
>> can point them to libcpu-rt-c or I can build one for them on Fedora 28.
>
>
> We cannot produce supportable builds on Fedora 28. Supported builds must
> come out of the build system. It so happens that we have Developer Toolset
> (DTS) which matches upstream version requirements, and that is available in
> certain product build environments, so we could produce supportable builds
> with this hybrid approach. But to give a different example: I don't think
> Debian has this capability, particularly when it comes to binutils.
Each user needs to evaluate pros and cons.
> All that wouldn't be a problem if the changes are fairly isolated and there
> wouldn't be tons of conditionals in generic code, but the current approach
Excluding the cpu-rt-c directory and x86 directories, my approach added
one IS_IN (libcpu_rt_c) check to elf. It can be hardly called "tons".
> this is implemented looks like quite a bit of an additional burden, for each
> architecture that chooses to participate.
That is true. My approach avoids duplicated efforts.
> It would be another thing to build a static PIC string library from sources
> and link that both into libc.so and this new support library. Then the build
> process would at least be aligned. But I don't think our current build
> system is up for that.
>
libcpu-rt-c targets systems with older glibcs. There is no need for it on
systems where glibc is up to date.
--
H.J.
^ permalink raw reply [flat|nested] 33+ messages in thread
* Re: [PATCH 00/20] RFC: Add the CPU run-time library for C
2018-06-13 13:25 ` Florian Weimer
2018-06-13 13:41 ` H.J. Lu
@ 2018-06-13 14:20 ` Siddhesh Poyarekar
2018-06-18 13:42 ` Florian Weimer
1 sibling, 1 reply; 33+ messages in thread
From: Siddhesh Poyarekar @ 2018-06-13 14:20 UTC (permalink / raw)
To: Florian Weimer, H.J. Lu; +Cc: GNU C Library
On 06/13/2018 06:55 PM, Florian Weimer wrote:
> It would be another thing to build a static PIC string library from
> sources and link that both into libc.so and this new support library.
> Then the build process would at least be aligned. But I don't think our
> current build system is up for that.
Why so? Are there dependencies that avoid splitting out a
libstring_pic.a that builds only the string routines and then links that
into everything that needs it, i.e. libc.so, libc.a, libc-rt.so, etc.?
Ideally I'd like to see something like this happen but it is a crazy
long term project:
1. Put sysdeps for specific routines into their respective directories.
That is, elf/sysdeps, math/sysdeps, string/sysdeps, etc.
2. Support building all of these as separate lib*_pic.a that then gets
integrated at the top
3. Add a new target in string/Makefile that builds a libstring-rt.so
from its libstring_pic.a
4. Pull string out into a separate project and make it a submodule of
the glibc repo.
This could even get used to replace libio in future, where
libio-3.0_pic.a gets linked in by default and libio-2.x_pic.a is built
into a libio_compat.so that can then be preloaded for programs that need it.
Siddhesh
^ permalink raw reply [flat|nested] 33+ messages in thread
* Re: [PATCH 00/20] RFC: Add the CPU run-time library for C
2018-06-13 14:20 ` Siddhesh Poyarekar
@ 2018-06-18 13:42 ` Florian Weimer
2018-06-19 8:20 ` Siddhesh Poyarekar
0 siblings, 1 reply; 33+ messages in thread
From: Florian Weimer @ 2018-06-18 13:42 UTC (permalink / raw)
To: Siddhesh Poyarekar, H.J. Lu; +Cc: GNU C Library
On 06/13/2018 04:19 PM, Siddhesh Poyarekar wrote:
> On 06/13/2018 06:55 PM, Florian Weimer wrote:
>> It would be another thing to build a static PIC string library from
>> sources and link that both into libc.so and this new support library.
>> Then the build process would at least be aligned. But I don't think
>> our current build system is up for that.
>
> Why so? Are there dependencies that avoid splitting out a
> libstring_pic.a that builds only the string routines and then links that
> into everything that needs it, i.e. libc.so, libc.a, libc-rt.so, etc.?
I don't think there are any actual obstacles in the code, or at least
not that many. It's just that it would be difficult to express this in
the current build system, in a concise manner.
> Ideally I'd like to see something like this happen but it is a crazy
> long term project:
>
> 1. Put sysdeps for specific routines into their respective directories.
> That is, elf/sysdeps, math/sysdeps, string/sysdeps, etc.
>
> 2. Support building all of these as separate lib*_pic.a that then gets
> integrated at the top
>
> 3. Add a new target in string/Makefile that builds a libstring-rt.so
> from its libstring_pic.a
>
> 4. Pull string out into a separate project and make it a submodule of
> the glibc repo.
>
> This could even get used to replace libio in future, where
> libio-3.0_pic.a gets linked in by default and libio-2.x_pic.a is built
> into a libio_compat.so that can then be preloaded for programs that need
> it.
Not sure if this is the right approach. Another way of doing this would
involve linking almost all of libc_pic.a (basically everything without
initializers), while restricting symbol visibility to a subset of the
symbols. ld should discard all objects which define only unexported and
otherwise unused symbols.
Thanks,
Florian
^ permalink raw reply [flat|nested] 33+ messages in thread
* Re: [PATCH 00/20] RFC: Add the CPU run-time library for C
2018-06-12 22:19 [PATCH 00/20] RFC: Add the CPU run-time library for C H.J. Lu
` (20 preceding siblings ...)
2018-06-13 6:50 ` [PATCH 00/20] RFC: Add the CPU run-time library for C Florian Weimer
@ 2018-06-18 17:09 ` Carlos O'Donell
21 siblings, 0 replies; 33+ messages in thread
From: Carlos O'Donell @ 2018-06-18 17:09 UTC (permalink / raw)
To: H.J. Lu, libc-alpha
On 06/12/2018 06:19 PM, H.J. Lu wrote:
> The current glibc has memory and string functions highly optimized for
> the current processors on the market. But it takes years for released
> glibc to be installed on end-users machines. In 2018, many machines
> with the latest Intel processors are still running glibc 2.17, which
> was released in February, 2013.
>
> This patch set introduces the CPU run-time library for C, libcpu-rt-c.
> libcpu-rt-c contains a subset of the C library with the optimized
> functions. The resulting libcpu-rt-c.so is binary compatible with
> older versions of libc.so so that libcpu-rt-c.so can be used with
> LD_PRELOAD or linked directly with applications. For some workloads,
> LD_PRELOAD=libcpu-rt-c.so has shown to improve performance by as much
> as 20% on Skylake machine.
>
How do you envision downstream distributions using this option?
Who does the building?
Who deploys it?
Who supports it? For how long?
You list one use so far.
Use Case 1:
- User installs RHEL7 on production Skylake systems.
- User complains to Intel about poor peformance of RHEL 7 on Skylake.
- H.J. builds libcpu-rt.so on Fedora 28 and delivers to customer.
- Customer deploys unsupported build of libcpu-rt.so on
production systems to get performance gain.
My worry here is that no customer will want to deploy unsupported
(I don't expect you to be signing up to support customers directly)
binaries on production systems.
So in this case you need to convince distributions to do the following:
* Build and ship libcpu-rt.so on a modern version of the distribution.
* Change established practice in distributions to allow newer distribution
packages of libcpu-rt.so to be installed in an older distribution
(often difficult because of RPM feature dependencies, scriptlet dependencies,
and other such dependencies).
or
Enhance the distribution to ship newer alternative toolchains to allow
libcpu-rt.so to be built from alternative newer glibc sources, and then
support that result for customers to LD_PRELOAD.
It's entirely possible that the newer alternative toolchain is a viable
option for things like RHEL which have Developer Toolset (as Florian mentions),
but as far as I know it's the only distribution doing this in a fully supportable
way.
However, for Debian they would have to look at letting an unstable package build
of libcpu-rt.so be a supported install in stable. Which would be something new.
Either way this is similar in some sense to Florian's separate-libm work to allow
libm to be built distinctly from glibc. Note that I say "similar" because it's
not the same, but tackles a similar problem of replacing parts of glibc with
newer parts which can be preloaded for applications to use without riks of
significant ABI/API deviation. The string functions, and the math functions, both
have very well defined interfaces and are candidates for just this work.
This kind of approach has actually worked well for a number of internal projects
we've worked on in the past, and has become my #1 go-to strategy for this kind
of stuff... but... and here is the "but", we never asked upstream to do it because
it's all support burden with no reward.
In closing, I think you need to prototype this in a distinct project, see how
your customers use it, and then come back with a proposal derived from real
world use cases.
Cheers,
Carlos.
^ permalink raw reply [flat|nested] 33+ messages in thread
* Re: [PATCH 00/20] RFC: Add the CPU run-time library for C
2018-06-18 13:42 ` Florian Weimer
@ 2018-06-19 8:20 ` Siddhesh Poyarekar
0 siblings, 0 replies; 33+ messages in thread
From: Siddhesh Poyarekar @ 2018-06-19 8:20 UTC (permalink / raw)
To: Florian Weimer, H.J. Lu; +Cc: GNU C Library
On 06/18/2018 07:11 PM, Florian Weimer wrote:
>> Why so? Are there dependencies that avoid splitting out a
>> libstring_pic.a that builds only the string routines and then links
>> that into everything that needs it, i.e. libc.so, libc.a, libc-rt.so,
>> etc.?
>
> I don't think there are any actual obstacles in the code, or at least
> not that many. It's just that it would be difficult to express this in
> the current build system, in a concise manner.
That's generally true for anything we do with our build system; it is a
complex web of insanity. That is also why I suggested a project to
rework it so that it is more modular and has less tentacles across
subdirectories like it currently does.
I am hand-waving of course because it is quite a big project.
>> This could even get used to replace libio in future, where
>> libio-3.0_pic.a gets linked in by default and libio-2.x_pic.a is built
>> into a libio_compat.so that can then be preloaded for programs that
>> need it.
>
> Not sure if this is the right approach. Another way of doing this would
> involve linking almost all of libc_pic.a (basically everything without
> initializers), while restricting symbol visibility to a subset of the
> symbols. ld should discard all objects which define only unexported and
> otherwise unused symbols.
Sure, that doesn't sound not too different from what I'm suggesting,
which is to drop everything deprecated from the main library and have it
loaded on demand.
Siddhesh
^ permalink raw reply [flat|nested] 33+ messages in thread
end of thread, other threads:[~2018-06-19 8:20 UTC | newest]
Thread overview: 33+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2018-06-12 22:19 [PATCH 00/20] RFC: Add the CPU run-time library for C H.J. Lu
2018-06-12 22:19 ` [PATCH 02/20] libcpu-rt-c/x86: Add cacheinfo H.J. Lu
2018-06-12 22:19 ` [PATCH 03/20] libcpu-rt-c/x86: Add cpu-rt-tunables.c H.J. Lu
2018-06-12 22:19 ` [PATCH 08/20] libcpu-rt-c/x86-64: Add memset and wmemset H.J. Lu
2018-06-12 22:19 ` [PATCH 07/20] libcpu-rt-c/x86-64: Add memrchr H.J. Lu
2018-06-12 22:19 ` [PATCH 04/20] libcpu-rt-c/x86-64: Add memchr H.J. Lu
2018-06-12 22:20 ` [PATCH 13/20] libcpu-rt-c/x86-64: Add strcpy H.J. Lu
2018-06-12 22:20 ` [PATCH 18/20] libcpu-rt-c/x86-64: Add strncmp H.J. Lu
2018-06-12 22:20 ` [PATCH 10/20] libcpu-rt-c: Don't use IFUNC memcmp in init_cpu_features H.J. Lu
2018-06-12 22:20 ` [PATCH 19/20] libcpu-rt-c/x86-64: Add strncpy H.J. Lu
2018-06-12 22:20 ` [PATCH 17/20] libcpu-rt-c/x86-64: Add strncat H.J. Lu
2018-06-12 22:20 ` [PATCH 14/20] libcpu-rt-c/x86-64: Add strlen H.J. Lu
2018-06-12 22:20 ` [PATCH 09/20] libcpu-rt-c/i386: Add memcmp H.J. Lu
2018-06-12 22:20 ` [PATCH 05/20] libcpu-rt-c/x86-64: " H.J. Lu
2018-06-12 22:20 ` [PATCH 20/20] libcpu-rt-c/x86-64: Add strrchr H.J. Lu
2018-06-12 22:20 ` [PATCH 06/20] libcpu-rt-c/x86-64: Add memcpy, memmove and mempcpy H.J. Lu
2018-06-12 22:20 ` [PATCH 01/20] Initial empty CPU run-time library for C: libcpu-rt-c H.J. Lu
2018-06-12 23:21 ` Joseph Myers
2018-06-13 11:21 ` H.J. Lu
2018-06-12 22:20 ` [PATCH 12/20] libcpu-rt-c/x86-64: Add strcmp H.J. Lu
2018-06-12 22:20 ` [PATCH 15/20] libcpu-rt-c/x86-64: Add strcat H.J. Lu
2018-06-12 22:20 ` [PATCH 11/20] libcpu-rt-c/x86-64: Add strchr H.J. Lu
2018-06-12 22:20 ` [PATCH 16/20] libcpu-rt-c/x86-64: Add strnlen H.J. Lu
2018-06-13 6:50 ` [PATCH 00/20] RFC: Add the CPU run-time library for C Florian Weimer
2018-06-13 10:14 ` H.J. Lu
2018-06-13 12:03 ` Adhemerval Zanella
2018-06-13 12:31 ` H.J. Lu
2018-06-13 13:25 ` Florian Weimer
2018-06-13 13:41 ` H.J. Lu
2018-06-13 14:20 ` Siddhesh Poyarekar
2018-06-18 13:42 ` Florian Weimer
2018-06-19 8:20 ` Siddhesh Poyarekar
2018-06-18 17:09 ` Carlos O'Donell
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