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core/glibc to 2.26-8

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This commit is contained in:
Kevin Mihelich 2017-12-07 13:46:46 +00:00
parent bc1b6c3ce5
commit 2a8a8bcf15
3 changed files with 34 additions and 386 deletions
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110
core/glibc/0001-Don-t-use-IFUNC-resolver-for-longjmp-or-system-in-li.patch
View file

@ -1,110 +0,0 @@
From fc5ad7024c620cdfe9b76e94638aac83b99c5bf8 Mon Sep 17 00:00:00 2001
From: Andreas Schwab <schwab@suse.de>
Date: Tue, 8 Aug 2017 16:21:58 +0200
Subject: [PATCH] Don't use IFUNC resolver for longjmp or system in libpthread
(bug 21041)
Unlike the vfork forwarder and like the fork forwarder as in bug 19861,
there won't be a problem when the compiler does not turn this into a tail
call.
---
nptl/pt-longjmp.c | 31 ++++++++++---------------------
nptl/pt-system.c | 24 ++++++++----------------
3 files changed, 18 insertions(+), 37 deletions(-)
diff --git a/nptl/pt-longjmp.c b/nptl/pt-longjmp.c
index 2ef757e687f..8f3c6b3a09f 100644
--- a/nptl/pt-longjmp.c
+++ b/nptl/pt-longjmp.c
@@ -25,21 +25,14 @@
symbol in libpthread, but the historical ABI requires it. For static
linking, there is no need to provide anything here--the libc version
will be linked in. For shared library ABI compatibility, there must be
- longjmp and siglongjmp symbols in libpthread.so; so we define them using
- IFUNC to redirect to the libc function. */
+ longjmp and siglongjmp symbols in libpthread.so.
-#if SHLIB_COMPAT (libpthread, GLIBC_2_0, GLIBC_2_22)
-
-# if HAVE_IFUNC
-
-# undef INIT_ARCH
-# define INIT_ARCH()
-# define DEFINE_LONGJMP(name) libc_ifunc (name, &__libc_longjmp)
-
-extern __typeof(longjmp) longjmp_ifunc;
-extern __typeof(siglongjmp) siglongjmp_ifunc;
+ With an IFUNC resolver, it would be possible to avoid the indirection,
+ but the IFUNC resolver might run before the __libc_longjmp symbol has
+ been relocated, in which case the IFUNC resolver would not be able to
+ provide the correct address. */
-# else /* !HAVE_IFUNC */
+#if SHLIB_COMPAT (libpthread, GLIBC_2_0, GLIBC_2_22)
static void __attribute__ ((noreturn, used))
longjmp_compat (jmp_buf env, int val)
@@ -47,14 +40,10 @@ longjmp_compat (jmp_buf env, int val)
__libc_longjmp (env, val);
}
-# define DEFINE_LONGJMP(name) strong_alias (longjmp_compat, name)
-
-# endif /* HAVE_IFUNC */
-
-DEFINE_LONGJMP (longjmp_ifunc)
-compat_symbol (libpthread, longjmp_ifunc, longjmp, GLIBC_2_0);
+strong_alias (longjmp_compat, longjmp_alias)
+compat_symbol (libpthread, longjmp_alias, longjmp, GLIBC_2_0);
-strong_alias (longjmp_ifunc, siglongjmp_ifunc)
-compat_symbol (libpthread, siglongjmp_ifunc, siglongjmp, GLIBC_2_0);
+strong_alias (longjmp_alias, siglongjmp_alias)
+compat_symbol (libpthread, siglongjmp_alias, siglongjmp, GLIBC_2_0);
#endif
diff --git a/nptl/pt-system.c b/nptl/pt-system.c
index f8ca6ba0d94..b30ddf2b398 100644
--- a/nptl/pt-system.c
+++ b/nptl/pt-system.c
@@ -25,29 +25,21 @@
libpthread, but the historical ABI requires it. For static linking,
there is no need to provide anything here--the libc version will be
linked in. For shared library ABI compatibility, there must be a
- 'system' symbol in libpthread.so; so we define it using IFUNC to
- redirect to the libc function. */
+ 'system' symbol in libpthread.so.
-#if SHLIB_COMPAT (libpthread, GLIBC_2_0, GLIBC_2_22)
-
-# if HAVE_IFUNC
-
-extern __typeof(system) system_ifunc;
-# undef INIT_ARCH
-# define INIT_ARCH()
-libc_ifunc (system_ifunc, &__libc_system)
+ With an IFUNC resolver, it would be possible to avoid the indirection,
+ but the IFUNC resolver might run before the __libc_system symbol has
+ been relocated, in which case the IFUNC resolver would not be able to
+ provide the correct address. */
-# else /* !HAVE_IFUNC */
+#if SHLIB_COMPAT (libpthread, GLIBC_2_0, GLIBC_2_22)
static int __attribute__ ((used))
system_compat (const char *line)
{
return __libc_system (line);
}
-strong_alias (system_compat, system_ifunc)
-
-# endif /* HAVE_IFUNC */
-
-compat_symbol (libpthread, system_ifunc, system, GLIBC_2_0);
+strong_alias (system_compat, system_alias)
+compat_symbol (libpthread, system_alias, system, GLIBC_2_0);
#endif
--
2.14.1

223
core/glibc/0002-x86-Add-x86_64-to-x86-64-HWCAP-BZ-22093.patch
View file

@ -1,223 +0,0 @@
From 45ff34638f034877b6a490c217d6a0632ce263f4 Mon Sep 17 00:00:00 2001
From: "H.J. Lu" <hjl.tools@gmail.com>
Date: Mon, 11 Sep 2017 08:18:11 -0700
Subject: [PATCH] x86: Add x86_64 to x86-64 HWCAP [BZ #22093]
Before glibc 2.26, ld.so set dl_platform to "x86_64" and searched the
"x86_64" subdirectory when loading a shared library. ld.so in glibc
2.26 was changed to set dl_platform to "haswell" or "xeon_phi", based
on supported ISAs. This led to shared library loading failure for
shared libraries placed under the "x86_64" subdirectory.
This patch adds "x86_64" to x86-64 dl_hwcap so that ld.so will always
search the "x86_64" subdirectory when loading a shared library.
NB: We can't set x86-64 dl_platform to "x86-64" since ld.so will skip
the "haswell" and "xeon_phi" subdirectories on "haswell" and "xeon_phi"
machines.
Tested on i686 and x86-64.
[BZ #22093]
* sysdeps/x86/cpu-features.c (init_cpu_features): Initialize
GLRO(dl_hwcap) to HWCAP_X86_64 for x86-64.
* sysdeps/x86/dl-hwcap.h (HWCAP_COUNT): Updated.
(HWCAP_IMPORTANT): Likewise.
(HWCAP_X86_64): New enum.
(HWCAP_X86_AVX512_1): Updated.
* sysdeps/x86/dl-procinfo.c (_dl_x86_hwcap_flags): Add "x86_64".
* sysdeps/x86_64/Makefile (tests): Add tst-x86_64-1.
(modules-names): Add x86_64/tst-x86_64mod-1.
(LDFLAGS-tst-x86_64mod-1.so): New.
($(objpfx)tst-x86_64-1): Likewise.
($(objpfx)x86_64/tst-x86_64mod-1.os): Likewise.
(tst-x86_64-1-clean): Likewise.
* sysdeps/x86_64/tst-x86_64-1.c: New file.
* sysdeps/x86_64/tst-x86_64mod-1.c: Likewise.
---
sysdeps/x86/cpu-features.c | 3 ++-
sysdeps/x86/dl-hwcap.h | 12 +++++++-----
sysdeps/x86/dl-procinfo.c | 4 ++--
sysdeps/x86_64/Makefile | 17 +++++++++++++++++
sysdeps/x86_64/tst-x86_64-1.c | 26 ++++++++++++++++++++++++++
sysdeps/x86_64/tst-x86_64mod-1.c | 22 ++++++++++++++++++++++
7 files changed, 76 insertions(+), 8 deletions(-)
create mode 100644 sysdeps/x86_64/tst-x86_64-1.c
create mode 100644 sysdeps/x86_64/tst-x86_64mod-1.c
diff --git a/sysdeps/x86/cpu-features.c b/sysdeps/x86/cpu-features.c
index 6f900840d4..c267f17b76 100644
--- a/sysdeps/x86/cpu-features.c
+++ b/sysdeps/x86/cpu-features.c
@@ -336,7 +336,6 @@ no_cpuid:
/* Reuse dl_platform, dl_hwcap and dl_hwcap_mask for x86. */
GLRO(dl_platform) = NULL;
- GLRO(dl_hwcap) = 0;
#if !HAVE_TUNABLES && defined SHARED
/* The glibc.tune.hwcap_mask tunable is initialized already, so no need to do
this. */
@@ -344,6 +343,7 @@ no_cpuid:
#endif
#ifdef __x86_64__
+ GLRO(dl_hwcap) = HWCAP_X86_64;
if (cpu_features->kind == arch_kind_intel)
{
if (CPU_FEATURES_ARCH_P (cpu_features, AVX512F_Usable)
@@ -374,6 +374,7 @@ no_cpuid:
GLRO(dl_platform) = "haswell";
}
#else
+ GLRO(dl_hwcap) = 0;
if (CPU_FEATURES_CPU_P (cpu_features, SSE2))
GLRO(dl_hwcap) |= HWCAP_X86_SSE2;
diff --git a/sysdeps/x86/dl-hwcap.h b/sysdeps/x86/dl-hwcap.h
index c95668415a..38627e9eef 100644
--- a/sysdeps/x86/dl-hwcap.h
+++ b/sysdeps/x86/dl-hwcap.h
@@ -24,15 +24,16 @@
# define HWCAP_PLATFORMS_START 0
# define HWCAP_PLATFORMS_COUNT 4
# define HWCAP_START 0
-# define HWCAP_COUNT 2
-# define HWCAP_IMPORTANT (HWCAP_X86_SSE2 | HWCAP_X86_AVX512_1)
+# define HWCAP_COUNT 3
+# define HWCAP_IMPORTANT \
+ (HWCAP_X86_SSE2 | HWCAP_X86_64 | HWCAP_X86_AVX512_1)
#elif defined __x86_64__
/* For 64 bit, only cover x86-64 platforms and capabilities. */
# define HWCAP_PLATFORMS_START 2
# define HWCAP_PLATFORMS_COUNT 4
# define HWCAP_START 1
-# define HWCAP_COUNT 2
-# define HWCAP_IMPORTANT (HWCAP_X86_AVX512_1)
+# define HWCAP_COUNT 3
+# define HWCAP_IMPORTANT (HWCAP_X86_64 | HWCAP_X86_AVX512_1)
#else
/* For 32 bit, only cover i586, i686 and SSE2. */
# define HWCAP_PLATFORMS_START 0
@@ -45,7 +46,8 @@
enum
{
HWCAP_X86_SSE2 = 1 << 0,
- HWCAP_X86_AVX512_1 = 1 << 1
+ HWCAP_X86_64 = 1 << 1,
+ HWCAP_X86_AVX512_1 = 1 << 2
};
static inline const char *
diff --git a/sysdeps/x86/dl-procinfo.c b/sysdeps/x86/dl-procinfo.c
index 43ab8fe25b..0192feb850 100644
--- a/sysdeps/x86/dl-procinfo.c
+++ b/sysdeps/x86/dl-procinfo.c
@@ -58,11 +58,11 @@ PROCINFO_CLASS struct cpu_features _dl_x86_cpu_features
#if !defined PROCINFO_DECL && defined SHARED
._dl_x86_hwcap_flags
#else
-PROCINFO_CLASS const char _dl_x86_hwcap_flags[2][9]
+PROCINFO_CLASS const char _dl_x86_hwcap_flags[3][9]
#endif
#ifndef PROCINFO_DECL
= {
- "sse2", "avx512_1"
+ "sse2", "x86_64", "avx512_1"
}
#endif
#if !defined SHARED || defined PROCINFO_DECL
diff --git a/sysdeps/x86_64/Makefile b/sysdeps/x86_64/Makefile
index 7f3ffe34ba..1514805f4a 100644
--- a/sysdeps/x86_64/Makefile
+++ b/sysdeps/x86_64/Makefile
@@ -52,6 +52,12 @@ $(objpfx)tst-quad2pie: $(objpfx)tst-quadmod2pie.o
CFLAGS-tst-quad1pie.c = $(PIE-ccflag)
CFLAGS-tst-quad2pie.c = $(PIE-ccflag)
+tests += tst-x86_64-1
+modules-names += x86_64/tst-x86_64mod-1
+LDFLAGS-tst-x86_64mod-1.so = -Wl,-soname,tst-x86_64mod-1.so
+
+$(objpfx)tst-x86_64-1: $(objpfx)x86_64/tst-x86_64mod-1.so
+
tests += tst-audit3 tst-audit4 tst-audit5 tst-audit6 tst-audit7 \
tst-audit10 tst-sse tst-avx tst-avx512
test-extras += tst-audit4-aux tst-audit10-aux \
@@ -124,3 +130,14 @@ endif
ifeq ($(subdir),csu)
gen-as-const-headers += tlsdesc.sym rtld-offsets.sym
endif
+
+$(objpfx)x86_64/tst-x86_64mod-1.os: $(objpfx)tst-x86_64mod-1.os
+ $(make-target-directory)
+ rm -f $@
+ ln $< $@
+
+do-tests-clean common-mostlyclean: tst-x86_64-1-clean
+
+.PHONY: tst-x86_64-1-clean
+tst-x86_64-1-clean:
+ -rm -rf $(objpfx)x86_64
diff --git a/sysdeps/x86_64/tst-x86_64-1.c b/sysdeps/x86_64/tst-x86_64-1.c
new file mode 100644
index 0000000000..ba1a55cdaf
--- /dev/null
+++ b/sysdeps/x86_64/tst-x86_64-1.c
@@ -0,0 +1,26 @@
+/* Test searching the "x86_64" directory for shared libraries.
+ Copyright (C) 2017 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <http://www.gnu.org/licenses/>. */
+
+extern void foo (void);
+
+int
+main (void)
+{
+ foo ();
+ return 0;
+}
diff --git a/sysdeps/x86_64/tst-x86_64mod-1.c b/sysdeps/x86_64/tst-x86_64mod-1.c
new file mode 100644
index 0000000000..83dfafb5a8
--- /dev/null
+++ b/sysdeps/x86_64/tst-x86_64mod-1.c
@@ -0,0 +1,22 @@
+/* Test searching the "x86_64" directory for shared libraries.
+ Copyright (C) 2017 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <http://www.gnu.org/licenses/>. */
+
+void
+foo (void)
+{
+}
--
2.13.2

87
core/glibc/PKGBUILD
View file

@ -6,56 +6,50 @@
# NOTE: valgrind requires rebuilt with each major glibc version
# ALARM: Kevin Mihelich <kevin@archlinuxarm.org>
# - Specify our build host type
# - Disabled distcc
# - Specify our build host type
# - Disabled distcc
# - Strip out Arch x86 multilib
noautobuild=1
pkgname=glibc
pkgver=2.26
pkgrel=6
pkgdesc='GNU C Library'
arch=(i686 x86_64)
pkgrel=8
arch=(x86_64)
url='http://www.gnu.org/software/libc'
license=(GPL LGPL)
groups=(base)
depends=('linux-api-headers>=4.10' tzdata filesystem)
makedepends=(git gd)
optdepends=('gd: for memusagestat')
backup=(etc/gai.conf
etc/locale.gen
etc/nscd.conf)
options=(!strip staticlibs !distcc)
install=glibc.install
_commit=4b692dffb95ac4812b161eb6a16113d7e824982e # release/2.26/master
_commit=71170eba2af41e08d51cf9d7b1ded5fd4b0b5c9c # release/2.26/master
source=(git://sourceware.org/git/glibc.git#commit=${_commit}
locale.gen.txt
locale-gen
0001-Don-t-use-IFUNC-resolver-for-longjmp-or-system-in-li.patch)
locale-gen)
md5sums=('SKIP'
'07ac979b6ab5eeb778d55f041529d623'
'476e9113489f93b348b21e144b6a8fcf'
'cbc073315c00b03898b7fc614274d6b3')
# pkgver() {
# cd glibc
# git describe --tags | sed 's/^glibc-//;s/-/+/g'
# }
'476e9113489f93b348b21e144b6a8fcf')
prepare() {
mkdir -p glibc-build
cd glibc
patch -p1 -i "$srcdir/0001-Don-t-use-IFUNC-resolver-for-longjmp-or-system-in-li.patch"
}
build() {
cd glibc-build
local _configure_flags=(
--prefix=/usr
--with-headers=/usr/include
--with-bugurl=https://github.com/archlinuxarm/PKGBUILDs/issues
--enable-add-ons
--enable-bind-now
--enable-lock-elision
--disable-multi-arch
--enable-obsolete-nsl
--enable-obsolete-rpc
--enable-stack-protector=strong
--enable-stackguard-randomization
--disable-profile
--disable-werror
)
if [[ ${CARCH} = "i686" ]]; then
# Hack to fix NPTL issues with Xen, only required on 32bit platforms
export CFLAGS="$CFLAGS -mno-tls-direct-seg-refs"
fi
cd "$srcdir/glibc-build"
# ALARM: Specify build host types
[[ $CARCH == "arm" ]] && CONFIGFLAG="--host=armv5tel-unknown-linux-gnueabi --build=armv5tel-unknown-linux-gnueabi"
@ -72,21 +66,9 @@ build() {
CPPFLAGS=${CPPFLAGS/-D_FORTIFY_SOURCE=2/}
"$srcdir/glibc/configure" \
--prefix=/usr \
--libdir=/usr/lib \
--libexecdir=/usr/lib \
--with-headers=/usr/include \
--with-bugurl=https://github.com/archlinuxarm/PKGBUILDs/issues \
--enable-add-ons \
--enable-bind-now \
--enable-lock-elision \
--disable-multi-arch \
--enable-obsolete-nsl \
--enable-obsolete-rpc \
--enable-stack-protector=strong \
--enable-stackguard-randomization \
--disable-profile \
--disable-werror \
${_configure_flags[@]} \
$CONFIGFLAG
# build libraries with fortify disabled
@ -112,6 +94,15 @@ check() {
}
package() {
pkgdesc='GNU C Library'
depends=('linux-api-headers>=4.10' tzdata filesystem)
optdepends=('gd: for memusagestat')
install=glibc.install
backup=(etc/gai.conf
etc/locale.gen
etc/nscd.conf)
groups=(base)
install -dm755 "$pkgdir/etc"
touch "$pkgdir/etc/ld.so.conf"
@ -160,14 +151,4 @@ package() {
usr/lib/lib{dl,m,nsl,resolv,rt,util}-${pkgver}.so \
usr/lib/lib{memusage,pcprofile,SegFault}.so \
usr/lib/{audit,gconv}/*.so || true
if [[ $CARCH = "x86_64" ]]; then
strip $STRIP_STATIC usr/lib/lib{m-${pkgver},mvec{,_nonshared}}.a
strip $STRIP_SHARED usr/lib/libmvec-*.so
fi
if [[ $CARCH = "i686" ]]; then
strip $STRIP_BINARIES usr/bin/lddlibc4
strip $STRIP_STATIC usr/lib/libm.a
fi
}