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[PATCH 07/12] Refactor vDSO initialization code
- From: Adhemerval Zanella <adhemerval dot zanella at linaro dot org>
- To: libc-alpha at sourceware dot org
- Date: Fri, 14 Jun 2019 12:29:03 -0300
- Subject: [PATCH 07/12] Refactor vDSO initialization code
- References: <20190614152908.8101-1-adhemerval.zanella@linaro.org>
Linux vDSO initialization code the internal function pointers require a lot
of duplicated boilerplate over different architectures. This patch aims to
simplify not only the code but the required definition to enable a vDSO
symbol to be enabled and used internally on glibc.
The changes are:
1. Consolidate all init-first.c on only one implementation and enable
the symbol based on HAVE_*_VSYSCALL existence.
2. Set the HAVE_*_VSYSCALL to the architecture expected names string.
3. Add a new internal implementation, get_vdso_mangle_symbol, which
returns a mangled function pointer.
Currently the clock_gettime, clock_getres, gettimeofday, getcpu, and time
are handled in an arch-independent way, powerpc still uses some arch-specific
vDSO symbol handled in a specific init-first implementation.
Checked on aarch64-linux-gnu, arm-linux-gnueabihf, i386-linux-gnu,
mips64-linux-gnu, powerpc64le-linux-gnu, s390x-linux-gu, sparc64-linux-gnu,
and x86_64-linux-gnu.
* sysdeps/powerpc/powerpc32/backtrace.c (is_sigtramp_address,
is_sigtramp_address_rt): Use HAVE_SIGTRAMP_{RT}32 instead of SHARED.
* sysdeps/powerpc/powerpc64/backtrace.c (is_sigtramp_address):
Likewise.
* sysdeps/unix/sysv/linux/aarch64/init-first.c: Remove file.
* sysdeps/unix/sysv/linux/aarch64/libc-vdso.h: Likewise.
* sysdeps/unix/sysv/linux/arm/init-first.c: Likewise.
* sysdeps/unix/sysv/linux/arm/libc-vdso.h: Likewise.
* sysdeps/unix/sysv/linux/mips/init-first.c: Likewise.
* sysdeps/unix/sysv/linux/mips/libc-vdso.h: Likewise.
* sysdeps/unix/sysv/linux/i386/init-first.c: Likewise.
* sysdeps/unix/sysv/linux/riscv/init-first.c: Likewise.
* sysdeps/unix/sysv/linux/riscv/libc-vdso.h: Likewise.
* sysdeps/unix/sysv/linux/s390/init-first.c: Likewise.
* sysdeps/unix/sysv/linux/s390/libc-vdso.h: Likewise.
* sysdeps/unix/sysv/linux/sparc/init-first.c: Likewise.
* sysdeps/unix/sysv/linux/sparc/libc-vdso.h: Likewise.
* sysdeps/unix/sysv/linux/x86/libc-vdso.h: Likewise.
* sysdeps/unix/sysv/linux/x86_64/init-first.c: Likewise.
* sysdeps/unix/sysv/linux/aarch64/sysdep.h
(HAVE_CLOCK_GETRES_VSYSCALL, HAVE_CLOCK_GETTIME_VSYSCALL,
HAVE_GETTIMEOFDAY_VSYSCALL): Define value based on kernel exported
name.
* sysdeps/unix/sysv/linux/arm/sysdep.h (HAVE_CLOCK_GETTIME_VSYSCALL,
HAVE_GETTIMEOFDAY_VSYSCALL): Likewise.
* sysdeps/unix/sysv/linux/i386/sysdep.h (HAVE_CLOCK_GETTIME_VSYSCALL,
HAVE_GETTIMEOFDAY_VSYSCALL): Likewise.
* sysdeps/unix/sysv/linux/mips/sysdep.h (HAVE_CLOCK_GETTIME_VSYSCALL,
HAVE_GETTIMEOFDAY_VSYSCALL): Likewise.
* sysdeps/unix/sysv/linux/powerpc/sysdep.h
(HAVE_CLOCK_GETRES_VSYSCALL, HAVE_CLOCK_GETTIME_VSYSCALL,
HAVE_GETCPU_VSYSCALL, HAVE_TIME_VSYSCALL, HAVE_GET_TBFREQ,
HAVE_SIGTRAMP_RT64, HAVE_SIGTRAMP_32, HAVE_SIGTRAMP_RT32): Likewise.
* sysdeps/unix/sysv/linux/riscv/sysdep.h (HAVE_CLOCK_GETRES_VSYSCALL,
HAVE_CLOCK_GETTIME_VSYSCALL, HAVE_GETTIMEOFDAY_VSYSCALL,
HAVE_GETCPU_VSYSCALL): Likewise.
* sysdeps/unix/sysv/linux/s390/sysdep.h (HAVE_CLOCK_GETRES_VSYSCALL,
HAVE_CLOCK_GETTIME_VSYSCALL, HAVE_GETTIMEOFDAY_VSYSCALL,
HAVE_GETCPU_VSYSCALL): Likewise.
* sysdeps/unix/sysv/linux/sparc/sysdep.h (HAVE_CLOCK_GETTIME_VSYSCALL,
HAVE_GETTIMEOFDAY_VSYSCALL): Likewise.
* sysdeps/unix/sysv/linux/x86_64/sysdep.h
(HAVE_CLOCK_GETTIME_VSYSCALL, HAVE_GETTIMEOFDAY_VSYSCALL,
HAVE_GETCPU_VSYSCALL): Likewise.
* sysdeps/unix/sysv/linux/dl-vdso.h (VDSO_NAME, VDSO_HASH): Define to
invalid names if architecture does not define them.
(get_vdso_mangle_symbol): New symbol.
* sysdeps/unix/sysv/linux/init-first.c: New file.
* sysdeps/unix/sysv/linux/libc-vdso.h: Likewise.
* sysdeps/unix/sysv/linux/powerpc/init-first.c (gettimeofday,
clock_gettime, clock_getres, getcpu, time): Remove declaration.
(__libc_vdso_platform_setup_arch): Likewise and use
get_vdso_mangle_symbol to setup vDSO symbols.
(sigtramp_rt64, sigtramp32, sigtramp_rt32, get_tbfreq): Add
attribute_hidden.
* sysdeps/unix/sysv/linux/powerpc/libc-vdso.h: Likewise.
* sysdeps/unix/sysv/linux/sysdep-vdso.h (VDSO_SYMBOL): Remove
definition.
---
sysdeps/powerpc/powerpc32/backtrace.c | 4 +-
sysdeps/powerpc/powerpc64/backtrace.c | 2 +-
sysdeps/unix/sysv/linux/aarch64/init-first.c | 44 ----------
sysdeps/unix/sysv/linux/aarch64/sysdep.h | 6 +-
sysdeps/unix/sysv/linux/arm/init-first.c | 41 ----------
sysdeps/unix/sysv/linux/arm/libc-vdso.h | 29 -------
sysdeps/unix/sysv/linux/arm/sysdep.h | 4 +-
sysdeps/unix/sysv/linux/dl-vdso.h | 21 ++++-
sysdeps/unix/sysv/linux/i386/init-first.c | 46 -----------
sysdeps/unix/sysv/linux/i386/sysdep.h | 4 +-
sysdeps/unix/sysv/linux/init-first.c | 80 +++++++++++++++++++
.../unix/sysv/linux/{aarch64 => }/libc-vdso.h | 18 ++++-
sysdeps/unix/sysv/linux/mips/init-first.c | 40 ----------
sysdeps/unix/sysv/linux/mips/libc-vdso.h | 29 -------
sysdeps/unix/sysv/linux/mips/sysdep.h | 4 +-
sysdeps/unix/sysv/linux/powerpc/init-first.c | 51 +++---------
sysdeps/unix/sysv/linux/powerpc/libc-vdso.h | 12 +--
sysdeps/unix/sysv/linux/powerpc/sysdep.h | 14 +++-
sysdeps/unix/sysv/linux/riscv/init-first.c | 54 -------------
sysdeps/unix/sysv/linux/riscv/libc-vdso.h | 34 --------
sysdeps/unix/sysv/linux/riscv/sysdep.h | 8 +-
sysdeps/unix/sysv/linux/s390/init-first.c | 54 -------------
sysdeps/unix/sysv/linux/s390/libc-vdso.h | 35 --------
sysdeps/unix/sysv/linux/s390/sysdep.h | 8 +-
sysdeps/unix/sysv/linux/sparc/init-first.c | 42 ----------
sysdeps/unix/sysv/linux/sparc/libc-vdso.h | 29 -------
sysdeps/unix/sysv/linux/sparc/sysdep.h | 4 +-
sysdeps/unix/sysv/linux/sysdep-vdso.h | 2 +-
sysdeps/unix/sysv/linux/x86/libc-vdso.h | 33 --------
sysdeps/unix/sysv/linux/x86_64/init-first.c | 48 -----------
sysdeps/unix/sysv/linux/x86_64/sysdep.h | 6 +-
31 files changed, 164 insertions(+), 642 deletions(-)
delete mode 100644 sysdeps/unix/sysv/linux/aarch64/init-first.c
delete mode 100644 sysdeps/unix/sysv/linux/arm/init-first.c
delete mode 100644 sysdeps/unix/sysv/linux/arm/libc-vdso.h
delete mode 100644 sysdeps/unix/sysv/linux/i386/init-first.c
create mode 100644 sysdeps/unix/sysv/linux/init-first.c
rename sysdeps/unix/sysv/linux/{aarch64 => }/libc-vdso.h (70%)
delete mode 100644 sysdeps/unix/sysv/linux/mips/init-first.c
delete mode 100644 sysdeps/unix/sysv/linux/mips/libc-vdso.h
delete mode 100644 sysdeps/unix/sysv/linux/riscv/init-first.c
delete mode 100644 sysdeps/unix/sysv/linux/riscv/libc-vdso.h
delete mode 100644 sysdeps/unix/sysv/linux/s390/init-first.c
delete mode 100644 sysdeps/unix/sysv/linux/s390/libc-vdso.h
delete mode 100644 sysdeps/unix/sysv/linux/sparc/init-first.c
delete mode 100644 sysdeps/unix/sysv/linux/sparc/libc-vdso.h
delete mode 100644 sysdeps/unix/sysv/linux/x86/libc-vdso.h
delete mode 100644 sysdeps/unix/sysv/linux/x86_64/init-first.c
diff --git a/sysdeps/powerpc/powerpc32/backtrace.c b/sysdeps/powerpc/powerpc32/backtrace.c
index 857a8aad7b..2978632017 100644
--- a/sysdeps/powerpc/powerpc32/backtrace.c
+++ b/sysdeps/powerpc/powerpc32/backtrace.c
@@ -54,7 +54,7 @@ struct signal_frame_32 {
static inline int
is_sigtramp_address (void *nip)
{
-#ifdef SHARED
+#ifdef HAVE_SIGTRAMP_RT32
if (nip == VDSO_SYMBOL (sigtramp32))
return 1;
#endif
@@ -71,7 +71,7 @@ struct rt_signal_frame_32 {
static inline int
is_sigtramp_address_rt (void * nip)
{
-#ifdef SHARED
+#ifdef HAVE_SIGTRAMP_32
if (nip == VDSO_SYMBOL (sigtramp_rt32))
return 1;
#endif
diff --git a/sysdeps/powerpc/powerpc64/backtrace.c b/sysdeps/powerpc/powerpc64/backtrace.c
index 7a167838d9..0fa7e9c403 100644
--- a/sysdeps/powerpc/powerpc64/backtrace.c
+++ b/sysdeps/powerpc/powerpc64/backtrace.c
@@ -57,7 +57,7 @@ struct signal_frame_64 {
static inline int
is_sigtramp_address (void *nip)
{
-#ifdef SHARED
+#ifdef HAVE_SIGTRAMP_RT64
if (nip == VDSO_SYMBOL (sigtramp_rt64))
return 1;
#endif
diff --git a/sysdeps/unix/sysv/linux/aarch64/init-first.c b/sysdeps/unix/sysv/linux/aarch64/init-first.c
deleted file mode 100644
index c3c27cfd4b..0000000000
--- a/sysdeps/unix/sysv/linux/aarch64/init-first.c
+++ /dev/null
@@ -1,44 +0,0 @@
-/* Copyright (C) 2007-2019 Free Software Foundation, Inc.
-
- This file is part of the GNU C Library.
-
- The GNU C Library is free software; you can redistribute it and/or
- modify it under the terms of the GNU Lesser General Public License as
- published by the Free Software Foundation; either version 2.1 of the
- License, or (at your option) any later version.
-
- The GNU C Library is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- Lesser General Public License for more details.
-
- You should have received a copy of the GNU Lesser General Public
- License along with the GNU C Library; if not, see
- <http://www.gnu.org/licenses/>. */
-
-#include <dl-vdso.h>
-#include <libc-vdso.h>
-
-int (*VDSO_SYMBOL(gettimeofday)) (struct timeval *, void *) attribute_hidden;
-int (*VDSO_SYMBOL(clock_gettime)) (clockid_t, struct timespec *);
-int (*VDSO_SYMBOL(clock_getres)) (clockid_t, struct timespec *);
-
-static inline void
-_libc_vdso_platform_setup (void)
-{
- void *p = get_vdso_symbol ("__kernel_gettimeofday");
- PTR_MANGLE (p);
- VDSO_SYMBOL(gettimeofday) = p;
-
- p = get_vdso_symbol ("__kernel_clock_gettime");
- PTR_MANGLE (p);
- VDSO_SYMBOL(clock_gettime) = p;
-
- p = get_vdso_symbol ("__kernel_clock_getres");
- PTR_MANGLE (p);
- VDSO_SYMBOL(clock_getres) = p;
-}
-
-#define VDSO_SETUP _libc_vdso_platform_setup
-
-#include <csu/init-first.c>
diff --git a/sysdeps/unix/sysv/linux/aarch64/sysdep.h b/sysdeps/unix/sysv/linux/aarch64/sysdep.h
index 662d321235..d57f7232e2 100644
--- a/sysdeps/unix/sysv/linux/aarch64/sysdep.h
+++ b/sysdeps/unix/sysv/linux/aarch64/sysdep.h
@@ -160,9 +160,9 @@
# endif
/* List of system calls which are supported as vsyscalls. */
-# define HAVE_CLOCK_GETRES_VSYSCALL 1
-# define HAVE_CLOCK_GETTIME_VSYSCALL 1
-# define HAVE_GETTIMEOFDAY_VSYSCALL 1
+# define HAVE_CLOCK_GETRES_VSYSCALL "__kernel_clock_getres"
+# define HAVE_CLOCK_GETTIME_VSYSCALL "__kernel_clock_gettime"
+# define HAVE_GETTIMEOFDAY_VSYSCALL "__kernel_gettimeofday"
/* Previously AArch64 used the generic version without the libc_hidden_def
which lead in a non existent __send symbol in libc.so. */
diff --git a/sysdeps/unix/sysv/linux/arm/init-first.c b/sysdeps/unix/sysv/linux/arm/init-first.c
deleted file mode 100644
index 2852ab135c..0000000000
--- a/sysdeps/unix/sysv/linux/arm/init-first.c
+++ /dev/null
@@ -1,41 +0,0 @@
-/* Initialization code run first thing by the ELF startup code. Linux/ARM.
- Copyright (C) 2015-2019 Free Software Foundation, Inc.
-
- This file is part of the GNU C Library.
-
- The GNU C Library is free software; you can redistribute it and/or
- modify it under the terms of the GNU Lesser General Public License as
- published by the Free Software Foundation; either version 2.1 of the
- License, or (at your option) any later version.
-
- The GNU C Library is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- Lesser General Public License for more details.
-
- You should have received a copy of the GNU Lesser General Public
- License along with the GNU C Library; if not, see
- <http://www.gnu.org/licenses/>. */
-
-#include <dl-vdso.h>
-#include <libc-vdso.h>
-#include <sysdep-vdso.h>
-
-int (*VDSO_SYMBOL(gettimeofday)) (struct timeval *, void *) attribute_hidden;
-int (*VDSO_SYMBOL(clock_gettime)) (clockid_t, struct timespec *);
-
-static inline void
-_libc_vdso_platform_setup (void)
-{
- void *p = get_vdso_symbol ("__vdso_gettimeofday");
- PTR_MANGLE (p);
- VDSO_SYMBOL (gettimeofday) = p;
-
- p = get_vdso_symbol ("__vdso_clock_gettime");
- PTR_MANGLE (p);
- VDSO_SYMBOL (clock_gettime) = p;
-}
-
-#define VDSO_SETUP _libc_vdso_platform_setup
-
-#include <csu/init-first.c>
diff --git a/sysdeps/unix/sysv/linux/arm/libc-vdso.h b/sysdeps/unix/sysv/linux/arm/libc-vdso.h
deleted file mode 100644
index 8702165c6b..0000000000
--- a/sysdeps/unix/sysv/linux/arm/libc-vdso.h
+++ /dev/null
@@ -1,29 +0,0 @@
-/* VDSO function pointer declarations. Linux/ARM.
- Copyright (C) 2015-2019 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/>. */
-
-#ifndef _LIBC_VDSO_H
-#define _LIBC_VDSO_H
-
-#include <sysdep-vdso.h>
-
-extern int (*VDSO_SYMBOL(gettimeofday)) (struct timeval *, void *)
- attribute_hidden;
-extern int (*VDSO_SYMBOL(clock_gettime)) (clockid_t, struct timespec *);
-
-#endif /* _LIBC_VDSO_H */
diff --git a/sysdeps/unix/sysv/linux/arm/sysdep.h b/sysdeps/unix/sysv/linux/arm/sysdep.h
index 467ccf2631..634aa2bc6b 100644
--- a/sysdeps/unix/sysv/linux/arm/sysdep.h
+++ b/sysdeps/unix/sysv/linux/arm/sysdep.h
@@ -392,8 +392,8 @@ __local_syscall_error: \
#define VDSO_HASH 61765110
/* List of system calls which are supported as vsyscalls. */
-#define HAVE_CLOCK_GETTIME_VSYSCALL 1
-#define HAVE_GETTIMEOFDAY_VSYSCALL 1
+#define HAVE_CLOCK_GETTIME_VSYSCALL "__vdso_gettimeofday"
+#define HAVE_GETTIMEOFDAY_VSYSCALL "__vdso_clock_gettime"
#define LOAD_ARGS_0()
#define ASM_ARGS_0
diff --git a/sysdeps/unix/sysv/linux/dl-vdso.h b/sysdeps/unix/sysv/linux/dl-vdso.h
index bab3779615..dcf065ef23 100644
--- a/sysdeps/unix/sysv/linux/dl-vdso.h
+++ b/sysdeps/unix/sysv/linux/dl-vdso.h
@@ -19,16 +19,25 @@
#ifndef _DL_VDSO_H
#define _DL_VDSO_H 1
-#include <assert.h>
#include <ldsodefs.h>
#include <dl-hash.h>
-#include <libc-vdso.h>
/* Functions for resolving symbols in the VDSO link map. */
extern void *_dl_vdso_vsym (const char *name,
const struct r_found_version *version)
attribute_hidden;
+/* If the architecture support vDSO it should define which is the expected
+ kernel version and hash value through both VDSO_NAME and VDSO_HASH
+ (usually defined at architecture sysdep.h). */
+
+#ifndef VDSO_NAME
+# define VDSO_NAME "LINUX_0.0"
+#endif
+#ifndef VDSO_HASH
+# define VDSO_HASH 0
+#endif
+
static inline void *
get_vdso_symbol (const char *symbol)
{
@@ -36,4 +45,12 @@ get_vdso_symbol (const char *symbol)
return _dl_vdso_vsym (symbol, &rfv);
}
+static inline void *
+get_vdso_mangle_symbol (const char *symbol)
+{
+ void *vdsop = get_vdso_symbol (symbol);
+ PTR_MANGLE (vdsop);
+ return vdsop;
+}
+
#endif /* dl-vdso.h */
diff --git a/sysdeps/unix/sysv/linux/i386/init-first.c b/sysdeps/unix/sysv/linux/i386/init-first.c
deleted file mode 100644
index 9c03f87b67..0000000000
--- a/sysdeps/unix/sysv/linux/i386/init-first.c
+++ /dev/null
@@ -1,46 +0,0 @@
-/* Initialization code run first thing by the ELF startup code. Linux/i386.
- Copyright (C) 2015-2019 Free Software Foundation, Inc.
- This file is part of the GNU C Library.
-
- The GNU C Library is free software; you can redistribute it and/or
- modify it under the terms of the GNU Lesser General Public
- License as published by the Free Software Foundation; either
- version 2.1 of the License, or (at your option) any later version.
-
- The GNU C Library is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- Lesser General Public License for more details.
-
- You should have received a copy of the GNU Lesser General Public
- License along with the GNU C Library; if not, see
- <http://www.gnu.org/licenses/>. */
-
-#include <time.h>
-#include <sysdep.h>
-#include <dl-vdso.h>
-#include <sysdep-vdso.h>
-
-long int (*VDSO_SYMBOL (clock_gettime)) (clockid_t, struct timespec *)
- attribute_hidden;
-
-static long int
-clock_gettime_syscall (clockid_t id, struct timespec *tp)
-{
- INTERNAL_SYSCALL_DECL (err);
- return INTERNAL_SYSCALL (clock_gettime, err, 2, id, tp);
-}
-
-static inline void
-__vdso_platform_setup (void)
-{
- void *p = get_vdso_symbol ("__vdso_clock_gettime");
- if (p == NULL)
- p = clock_gettime_syscall;
- PTR_MANGLE (p);
- VDSO_SYMBOL (clock_gettime) = p;
-}
-
-#define VDSO_SETUP __vdso_platform_setup
-
-#include <csu/init-first.c>
diff --git a/sysdeps/unix/sysv/linux/i386/sysdep.h b/sysdeps/unix/sysv/linux/i386/sysdep.h
index 278028f52e..e793fdc936 100644
--- a/sysdeps/unix/sysv/linux/i386/sysdep.h
+++ b/sysdeps/unix/sysv/linux/i386/sysdep.h
@@ -313,8 +313,8 @@ struct libc_do_syscall_args
# define VDSO_HASH 61765110
/* List of system calls which are supported as vsyscalls. */
-# define HAVE_CLOCK_GETTIME_VSYSCALL 1
-# define HAVE_GETTIMEOFDAY_VSYSCALL 1
+# define HAVE_CLOCK_GETTIME_VSYSCALL "__vdso_clock_gettime"
+# define HAVE_GETTIMEOFDAY_VSYSCALL "__vdso_gettimeofday"
/* Define a macro which expands inline into the wrapper code for a system
call. This use is for internal calls that do not need to handle errors
diff --git a/sysdeps/unix/sysv/linux/init-first.c b/sysdeps/unix/sysv/linux/init-first.c
new file mode 100644
index 0000000000..194194d319
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/init-first.c
@@ -0,0 +1,80 @@
+/* vDSO internal symbols. Linux generic version.
+ Copyright (C) 2019 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public License as
+ published by the Free Software Foundation; either version 2.1 of the
+ License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <http://www.gnu.org/licenses/>. */
+
+#include <dl-vdso.h>
+#include <libc-vdso.h>
+
+/* vDSO symbol used on clock_gettime implementation. */
+#ifdef HAVE_CLOCK_GETTIME_VSYSCALL
+int (*VDSO_SYMBOL(clock_gettime)) (clockid_t, struct timespec *)
+ attribute_hidden;
+#endif
+/* vDSO symbol used on clock_getres implementation. */
+#ifdef HAVE_CLOCK_GETRES_VSYSCALL
+int (*VDSO_SYMBOL(clock_getres)) (clockid_t, struct timespec *)
+ attribute_hidden;
+#endif
+/* vDSO symbol used on gettimeofday implementation. */
+#ifdef HAVE_GETTIMEOFDAY_VSYSCALL
+int (*VDSO_SYMBOL (gettimeofday)) (struct timeval *, void *)
+ attribute_hidden;
+#endif
+/* vDSO symbol used on GNU extension getcpu implementation. */
+#ifdef HAVE_GETCPU_VSYSCALL
+long int (*VDSO_SYMBOL(getcpu)) (unsigned *, unsigned *, void *)
+ attribute_hidden;
+#endif
+/* vDSO symbol used on time implementation. */
+#ifdef HAVE_TIME_VSYSCALL
+time_t (*VDSO_SYMBOL(time)) (time_t *) attribute_hidden;
+#endif
+
+static inline void
+__libc_vdso_platform_setup (void)
+{
+#ifdef HAVE_CLOCK_GETTIME_VSYSCALL
+ VDSO_SYMBOL(clock_gettime)
+ = get_vdso_mangle_symbol (HAVE_CLOCK_GETTIME_VSYSCALL);
+#endif
+
+#ifdef HAVE_CLOCK_GETRES_VSYSCALL
+ VDSO_SYMBOL(clock_getres)
+ = get_vdso_mangle_symbol (HAVE_CLOCK_GETRES_VSYSCALL);
+#endif
+
+#ifdef HAVE_GETTIMEOFDAY_VSYSCALL
+ VDSO_SYMBOL(gettimeofday)
+ = get_vdso_mangle_symbol (HAVE_GETTIMEOFDAY_VSYSCALL);
+#endif
+
+#ifdef HAVE_GETCPU_VSYSCALL
+ VDSO_SYMBOL(getcpu) = get_vdso_mangle_symbol (HAVE_GETCPU_VSYSCALL);
+#endif
+
+#ifdef HAVE_TIME_VSYSCALL
+ VDSO_SYMBOL(time) = get_vdso_mangle_symbol (HAVE_TIME_VSYSCALL);
+#endif
+
+#ifdef VDSO_SETUP_ARCH
+ VDSO_SETUP_ARCH ();
+#endif
+}
+
+#define VDSO_SETUP __libc_vdso_platform_setup
+
+#include <csu/init-first.c>
diff --git a/sysdeps/unix/sysv/linux/aarch64/libc-vdso.h b/sysdeps/unix/sysv/linux/libc-vdso.h
similarity index 70%
rename from sysdeps/unix/sysv/linux/aarch64/libc-vdso.h
rename to sysdeps/unix/sysv/linux/libc-vdso.h
index 3fcbaa9fce..f681868137 100644
--- a/sysdeps/unix/sysv/linux/aarch64/libc-vdso.h
+++ b/sysdeps/unix/sysv/linux/libc-vdso.h
@@ -19,12 +19,22 @@
#ifndef _LIBC_VDSO_H
#define _LIBC_VDSO_H
-#include <sysdep.h>
-#include <sysdep-vdso.h>
+#define VDSO_SYMBOL(__name) __vdso_##__name
-extern int (*VDSO_SYMBOL(gettimeofday)) (struct timeval *, void *)
- attribute_hidden;
+#ifdef HAVE_CLOCK_GETTIME_VSYSCALL
extern int (*VDSO_SYMBOL(clock_gettime)) (clockid_t, struct timespec *);
+#endif
+#ifdef HAVE_CLOCK_GETRES_VSYSCALL
extern int (*VDSO_SYMBOL(clock_getres)) (clockid_t, struct timespec *);
+#endif
+#ifdef HAVE_GETTIMEOFDAY_VSYSCALL
+extern int (*VDSO_SYMBOL (gettimeofday)) (struct timeval *, void *);
+#endif
+#ifdef HAVE_GETCPU_VSYSCALL
+extern long int (*VDSO_SYMBOL(getcpu)) (unsigned *, unsigned *, void *);
+#endif
+#ifdef HAVE_TIME_VSYSCALL
+extern time_t (*VDSO_SYMBOL(time)) (time_t *);
+#endif
#endif /* _LIBC_VDSO_H */
diff --git a/sysdeps/unix/sysv/linux/mips/init-first.c b/sysdeps/unix/sysv/linux/mips/init-first.c
deleted file mode 100644
index 2a43bdc8b0..0000000000
--- a/sysdeps/unix/sysv/linux/mips/init-first.c
+++ /dev/null
@@ -1,40 +0,0 @@
-/* Initialization code run first thing by the ELF startup code.
- Copyright (C) 2016-2019 Free Software Foundation, Inc.
-
- This file is part of the GNU C Library.
-
- The GNU C Library is free software; you can redistribute it and/or
- modify it under the terms of the GNU Lesser General Public License as
- published by the Free Software Foundation; either version 2.1 of the
- License, or (at your option) any later version.
-
- The GNU C Library is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- Lesser General Public License for more details.
-
- You should have received a copy of the GNU Lesser General Public
- License along with the GNU C Library; if not, see
- <http://www.gnu.org/licenses/>. */
-
-#include <dl-vdso.h>
-#include <libc-vdso.h>
-
-int (*VDSO_SYMBOL(gettimeofday)) (struct timeval *, void *) attribute_hidden;
-int (*VDSO_SYMBOL(clock_gettime)) (clockid_t, struct timespec *);
-
-static inline void
-_libc_vdso_platform_setup (void)
-{
- void *p = get_vdso_symbol ("__vdso_gettimeofday");
- PTR_MANGLE (p);
- VDSO_SYMBOL (gettimeofday) = p;
-
- p = get_vdso_symbol ("__vdso_clock_gettime");
- PTR_MANGLE (p);
- VDSO_SYMBOL (clock_gettime) = p;
-}
-
-#define VDSO_SETUP _libc_vdso_platform_setup
-
-#include <csu/init-first.c>
diff --git a/sysdeps/unix/sysv/linux/mips/libc-vdso.h b/sysdeps/unix/sysv/linux/mips/libc-vdso.h
deleted file mode 100644
index 344ea2d750..0000000000
--- a/sysdeps/unix/sysv/linux/mips/libc-vdso.h
+++ /dev/null
@@ -1,29 +0,0 @@
-/* VDSO function pointer declarations.
- Copyright (C) 2016-2019 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/>. */
-
-#ifndef _LIBC_VDSO_H
-#define _LIBC_VDSO_H
-
-#include <sysdep-vdso.h>
-
-extern int (*VDSO_SYMBOL(gettimeofday)) (struct timeval *, void *)
- attribute_hidden;
-extern int (*VDSO_SYMBOL(clock_gettime)) (clockid_t, struct timespec *);
-
-#endif /* _LIBC_VDSO_H */
diff --git a/sysdeps/unix/sysv/linux/mips/sysdep.h b/sysdeps/unix/sysv/linux/mips/sysdep.h
index cabc590961..58a7244581 100644
--- a/sysdeps/unix/sysv/linux/mips/sysdep.h
+++ b/sysdeps/unix/sysv/linux/mips/sysdep.h
@@ -20,5 +20,5 @@
#define VDSO_HASH 61765110
/* List of system calls which are supported as vsyscalls. */
-#define HAVE_CLOCK_GETTIME_VSYSCALL 1
-#define HAVE_GETTIMEOFDAY_VSYSCALL 1
+#define HAVE_CLOCK_GETTIME_VSYSCALL "__vdso_gettimeofday"
+#define HAVE_GETTIMEOFDAY_VSYSCALL "__vdso_clock_gettime"
diff --git a/sysdeps/unix/sysv/linux/powerpc/init-first.c b/sysdeps/unix/sysv/linux/powerpc/init-first.c
index 0d46563ce3..6e72d9ca84 100644
--- a/sysdeps/unix/sysv/linux/powerpc/init-first.c
+++ b/sysdeps/unix/sysv/linux/powerpc/init-first.c
@@ -19,47 +19,18 @@
#include <dl-vdso.h>
#include <libc-vdso.h>
-int (*VDSO_SYMBOL(gettimeofday)) (struct timeval *, void *)
- attribute_hidden;
-int (*VDSO_SYMBOL(clock_gettime)) (clockid_t, struct timespec *);
-int (*VDSO_SYMBOL(clock_getres)) (clockid_t, struct timespec *);
-unsigned long long (*VDSO_SYMBOL(get_tbfreq)) (void);
-int (*VDSO_SYMBOL(getcpu)) (unsigned *, unsigned *);
-time_t (*VDSO_SYMBOL(time)) (time_t *);
-
+unsigned long long (*VDSO_SYMBOL(get_tbfreq)) (void) attribute_hidden;
#if defined(__PPC64__) || defined(__powerpc64__)
-void *VDSO_SYMBOL(sigtramp_rt64);
+void *VDSO_SYMBOL(sigtramp_rt64) attribute_hidden;
#else
-void *VDSO_SYMBOL(sigtramp32);
-void *VDSO_SYMBOL(sigtramp_rt32);
+void *VDSO_SYMBOL(sigtramp32) attribute_hidden;
+void *VDSO_SYMBOL(sigtramp_rt32) attribute_hidden;
#endif
static inline void
-_libc_vdso_platform_setup (void)
+__libc_vdso_platform_setup_arch (void)
{
- void *p = get_vdso_symbol ("__kernel_gettimeofday");
- PTR_MANGLE (p);
- VDSO_SYMBOL (gettimeofday) = p;
-
- p = get_vdso_symbol ("__kernel_clock_gettime");
- PTR_MANGLE (p);
- VDSO_SYMBOL (clock_gettime) = p;
-
- p = get_vdso_symbol ("__kernel_clock_getres");
- PTR_MANGLE (p);
- VDSO_SYMBOL (clock_getres) = p;
-
- p = get_vdso_symbol ("__kernel_get_tbfreq");
- PTR_MANGLE (p);
- VDSO_SYMBOL (get_tbfreq) = p;
-
- p = get_vdso_symbol ("__kernel_getcpu");
- PTR_MANGLE (p);
- VDSO_SYMBOL (getcpu) = p;
-
- p = get_vdso_symbol ("__kernel_time");
- PTR_MANGLE (p);
- VDSO_SYMBOL (time) = p;
+ VDSO_SYMBOL (get_tbfreq) = get_vdso_mangle_symbol (HAVE_GET_TBFREQ);
/* PPC64 uses only one signal trampoline symbol, while PPC32 will use
two depending if SA_SIGINFO is used (__kernel_sigtramp_rt32) or not
@@ -67,13 +38,13 @@ _libc_vdso_platform_setup (void)
There is no need to pointer mangle these symbol because they will
used only for pointer comparison. */
#if defined(__PPC64__) || defined(__powerpc64__)
- VDSO_SYMBOL(sigtramp_rt64) = get_vdso_symbol ("__kernel_sigtramp_rt64");
+ VDSO_SYMBOL(sigtramp_rt64) = get_vdso_symbol (HAVE_SIGTRAMP_RT64);
#else
- VDSO_SYMBOL(sigtramp32) = get_vdso_symbol ("__kernel_sigtramp32");
- VDSO_SYMBOL(sigtramp_rt32) = get_vdso_symbol ("__kernel_sigtramp_rt32");
+ VDSO_SYMBOL(sigtramp32) = get_vdso_symbol (HAVE_SIGTRAMP_32);
+ VDSO_SYMBOL(sigtramp_rt32) = get_vdso_symbol (HAVE_SIGTRAMP_RT32);
#endif
}
-#define VDSO_SETUP _libc_vdso_platform_setup
+#define VDSO_SETUP_ARCH __libc_vdso_platform_setup_arch
-#include <csu/init-first.c>
+#include <sysdeps/unix/sysv/linux/init-first.c>
diff --git a/sysdeps/unix/sysv/linux/powerpc/libc-vdso.h b/sysdeps/unix/sysv/linux/powerpc/libc-vdso.h
index f8184061c0..47e925493b 100644
--- a/sysdeps/unix/sysv/linux/powerpc/libc-vdso.h
+++ b/sysdeps/unix/sysv/linux/powerpc/libc-vdso.h
@@ -17,20 +17,14 @@
<http://www.gnu.org/licenses/>. */
-#ifndef _LIBC_VDSO_H
-#define _LIBC_VDSO_H
+#ifndef _LIBC_POWERPC_VDSO_H
+#define _LIBC_POWERPC_VDSO_H
#include <sysdep.h>
#include <sysdep-vdso.h>
+#include_next <libc-vdso.h>
-extern int (*VDSO_SYMBOL(gettimeofday)) (struct timeval *, void *)
- attribute_hidden;
-extern int (*VDSO_SYMBOL(clock_gettime)) (clockid_t, struct timespec *);
-extern int (*VDSO_SYMBOL(clock_getres)) (clockid_t, struct timespec *);
extern unsigned long long (*VDSO_SYMBOL(get_tbfreq)) (void);
-extern int (*VDSO_SYMBOL(getcpu)) (unsigned *, unsigned *);
-extern time_t (*VDSO_SYMBOL(time)) (time_t *);
-
#if defined(__PPC64__) || defined(__powerpc64__)
extern void *VDSO_SYMBOL(sigtramp_rt64);
#else
diff --git a/sysdeps/unix/sysv/linux/powerpc/sysdep.h b/sysdeps/unix/sysv/linux/powerpc/sysdep.h
index 5b411d0e8e..20167615c8 100644
--- a/sysdeps/unix/sysv/linux/powerpc/sysdep.h
+++ b/sysdeps/unix/sysv/linux/powerpc/sysdep.h
@@ -20,7 +20,15 @@
#define VDSO_HASH 123718565
/* List of system calls which are supported as vsyscalls. */
-#define HAVE_CLOCK_GETRES_VSYSCALL 1
-#define HAVE_CLOCK_GETTIME_VSYSCALL 1
-#define HAVE_GETCPU_VSYSCALL 1
+#define HAVE_CLOCK_GETRES_VSYSCALL "__kernel_clock_getres"
+#define HAVE_CLOCK_GETTIME_VSYSCALL "__kernel_clock_gettime"
+#define HAVE_GETCPU_VSYSCALL "__kernel_getcpu"
+#define HAVE_TIME_VSYSCALL "__kernel_time"
+#define HAVE_GET_TBFREQ "__kernel_get_tbfreq"
+#if defined(__PPC64__) || defined(__powerpc64__)
+# define HAVE_SIGTRAMP_RT64 "__kernel_sigtramp_rt64"
+#else
+# define HAVE_SIGTRAMP_32 "__kernel_sigtramp32"
+# define HAVE_SIGTRAMP_RT32 "__kernel_sigtramp_rt32"
+#endif
diff --git a/sysdeps/unix/sysv/linux/riscv/init-first.c b/sysdeps/unix/sysv/linux/riscv/init-first.c
deleted file mode 100644
index f3d243a192..0000000000
--- a/sysdeps/unix/sysv/linux/riscv/init-first.c
+++ /dev/null
@@ -1,54 +0,0 @@
-/* RISC-V VDSO initialization
- Copyright (C) 2017-2019 Free Software Foundation, Inc.
-
- This file is part of the GNU C Library.
-
- The GNU C Library is free software; you can redistribute it and/or
- modify it under the terms of the GNU Lesser General Public License as
- published by the Free Software Foundation; either version 2.1 of the
- License, or (at your option) any later version.
-
- The GNU C Library is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- Lesser General Public License for more details.
-
- You should have received a copy of the GNU Lesser General Public
- License along with the GNU C Library; if not, see
- <http://www.gnu.org/licenses/>. */
-
-#include <dl-vdso.h>
-#include <libc-vdso.h>
-
-long int (*VDSO_SYMBOL (getcpu)) (unsigned int *, unsigned int *, void *)
- attribute_hidden;
-long int (*VDSO_SYMBOL (gettimeofday)) (struct timeval *, void *)
- attribute_hidden;
-long int (*VDSO_SYMBOL (clock_gettime)) (clockid_t, struct timespec *)
- attribute_hidden;
-long int (*VDSO_SYMBOL (clock_getres)) (clockid_t, struct timespec *)
- attribute_hidden;
-
-static inline void
-_libc_vdso_platform_setup (void)
-{
- void *p = get_vdso_symbol ("__vdso_getcpu");
- PTR_MANGLE (p);
- VDSO_SYMBOL (getcpu) = p;
-
- p = get_vdso_symbol ("__vdso_gettimeofday");
- PTR_MANGLE (p);
- VDSO_SYMBOL (gettimeofday) = p;
-
- p = get_vdso_symbol ("__vdso_clock_gettime");
- PTR_MANGLE (p);
- VDSO_SYMBOL (clock_gettime) = p;
-
- p = get_vdso_symbol ("__vdso_clock_getres");
- PTR_MANGLE (p);
- VDSO_SYMBOL (clock_getres) = p;
-}
-
-#define VDSO_SETUP _libc_vdso_platform_setup
-
-#include <csu/init-first.c>
diff --git a/sysdeps/unix/sysv/linux/riscv/libc-vdso.h b/sysdeps/unix/sysv/linux/riscv/libc-vdso.h
deleted file mode 100644
index 2373292ab9..0000000000
--- a/sysdeps/unix/sysv/linux/riscv/libc-vdso.h
+++ /dev/null
@@ -1,34 +0,0 @@
-/* RISC-V VDSO function declarations
- Copyright (C) 2017-2019 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/>. */
-
-#ifndef _LIBC_VDSO_H
-#define _LIBC_VDSO_H
-
-#include <sysdep-vdso.h>
-
-extern long int (*VDSO_SYMBOL (getcpu)) (unsigned int *, unsigned int *, void *)
- attribute_hidden;
-extern long int (*VDSO_SYMBOL (gettimeofday)) (struct timeval *, void *)
- attribute_hidden;
-extern long int (*VDSO_SYMBOL (clock_gettime)) (clockid_t, struct timespec *)
- attribute_hidden;
-extern long int (*VDSO_SYMBOL (clock_getres)) (clockid_t, struct timespec *)
- attribute_hidden;
-
-#endif /* _LIBC_VDSO_H */
diff --git a/sysdeps/unix/sysv/linux/riscv/sysdep.h b/sysdeps/unix/sysv/linux/riscv/sysdep.h
index 5de773744c..22835aa12f 100644
--- a/sysdeps/unix/sysv/linux/riscv/sysdep.h
+++ b/sysdeps/unix/sysv/linux/riscv/sysdep.h
@@ -125,10 +125,10 @@
# define VDSO_HASH 182943605
/* List of system calls which are supported as vsyscalls. */
-# define HAVE_CLOCK_GETRES_VSYSCALL 1
-# define HAVE_CLOCK_GETTIME_VSYSCALL 1
-# define HAVE_GETTIMEOFDAY_VSYSCALL 1
-# define HAVE_GETCPU_VSYSCALL 1
+# define HAVE_CLOCK_GETRES_VSYSCALL "__vdso_clock_getres"
+# define HAVE_CLOCK_GETTIME_VSYSCALL "__vdso_clock_gettime"
+# define HAVE_GETTIMEOFDAY_VSYSCALL "__vdso_gettimeofday"
+# define HAVE_GETCPU_VSYSCALL "__vdso_getcpu"
/* Define a macro which expands into the inline wrapper code for a system
call. */
diff --git a/sysdeps/unix/sysv/linux/s390/init-first.c b/sysdeps/unix/sysv/linux/s390/init-first.c
deleted file mode 100644
index 63a12d95c8..0000000000
--- a/sysdeps/unix/sysv/linux/s390/init-first.c
+++ /dev/null
@@ -1,54 +0,0 @@
-/* Initialization code run first thing by the ELF startup code. Linux/s390.
- Copyright (C) 2008-2019 Free Software Foundation, Inc.
- This file is part of the GNU C Library.
-
- The GNU C Library is free software; you can redistribute it and/or
- modify it under the terms of the GNU Lesser General Public
- License as published by the Free Software Foundation; either
- version 2.1 of the License, or (at your option) any later version.
-
- The GNU C Library is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- Lesser General Public License for more details.
-
- You should have received a copy of the GNU Lesser General Public
- License along with the GNU C Library; if not, see
- <http://www.gnu.org/licenses/>. */
-
-#include <dl-vdso.h>
-#include <libc-vdso.h>
-
-long int (*VDSO_SYMBOL(gettimeofday)) (struct timeval *, void *)
- attribute_hidden;
-
-long int (*VDSO_SYMBOL(clock_gettime)) (clockid_t, struct timespec *)
- __attribute__ ((nocommon));
-
-long int (*VDSO_SYMBOL(clock_getres)) (clockid_t, struct timespec *)
- __attribute__ ((nocommon));
-
-long int (*VDSO_SYMBOL(getcpu)) (unsigned *, unsigned *, void *)
- attribute_hidden;
-
-static inline void
-_libc_vdso_platform_setup (void)
-{
- void *p = get_vdso_symbol ("__kernel_gettimeofday");
- PTR_MANGLE (p);
- VDSO_SYMBOL (gettimeofday) = p;
-
- p = get_vdso_symbol ("__kernel_clock_gettime");
- PTR_MANGLE (p);
- VDSO_SYMBOL (clock_gettime) = p;
-
- p = get_vdso_symbol ("__kernel_clock_getres");
- PTR_MANGLE (p);
- VDSO_SYMBOL (clock_getres) = p;
-
- p = get_vdso_symbol ("__kernel_getcpu");
- PTR_MANGLE (p);
- VDSO_SYMBOL (getcpu) = p;
-}
-
-#include <csu/init-first.c>
diff --git a/sysdeps/unix/sysv/linux/s390/libc-vdso.h b/sysdeps/unix/sysv/linux/s390/libc-vdso.h
deleted file mode 100644
index cc97601383..0000000000
--- a/sysdeps/unix/sysv/linux/s390/libc-vdso.h
+++ /dev/null
@@ -1,35 +0,0 @@
-/* Resolve function pointers to VDSO functions.
- Copyright (C) 2008-2019 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/>. */
-
-
-#ifndef _LIBC_VDSO_H
-#define _LIBC_VDSO_H
-
-#include <sysdep-vdso.h>
-
-extern long int (*VDSO_SYMBOL(gettimeofday)) (struct timeval *, void *)
- attribute_hidden;
-
-extern long int (*VDSO_SYMBOL(clock_gettime)) (clockid_t, struct timespec *);
-
-extern long int (*VDSO_SYMBOL(clock_getres)) (clockid_t, struct timespec *);
-
-extern long int (*VDSO_SYMBOL(getcpu)) (unsigned *, unsigned *, void *)
- attribute_hidden;
-
-#endif /* _LIBC_VDSO_H */
diff --git a/sysdeps/unix/sysv/linux/s390/sysdep.h b/sysdeps/unix/sysv/linux/s390/sysdep.h
index eefbd8f007..386efb1896 100644
--- a/sysdeps/unix/sysv/linux/s390/sysdep.h
+++ b/sysdeps/unix/sysv/linux/s390/sysdep.h
@@ -20,8 +20,8 @@
#define VDSO_HASH 123718585
/* List of system calls which are supported as vsyscalls. */
-#define HAVE_CLOCK_GETRES_VSYSCALL 1
-#define HAVE_CLOCK_GETTIME_VSYSCALL 1
-#define HAVE_GETTIMEOFDAY_VSYSCALL 1
-#define HAVE_GETCPU_VSYSCALL 1
+#define HAVE_CLOCK_GETRES_VSYSCALL "__kernel_clock_getres"
+#define HAVE_CLOCK_GETTIME_VSYSCALL "__kernel_clock_gettime"
+#define HAVE_GETTIMEOFDAY_VSYSCALL "__kernel_gettimeofday"
+#define HAVE_GETCPU_VSYSCALL "__kernel_getcpu"
diff --git a/sysdeps/unix/sysv/linux/sparc/init-first.c b/sysdeps/unix/sysv/linux/sparc/init-first.c
deleted file mode 100644
index bdaa78fd32..0000000000
--- a/sysdeps/unix/sysv/linux/sparc/init-first.c
+++ /dev/null
@@ -1,42 +0,0 @@
-/* SPARC VDSO initialization
- Copyright (C) 2018-2019 Free Software Foundation, Inc.
-
- This file is part of the GNU C Library.
-
- The GNU C Library is free software; you can redistribute it and/or
- modify it under the terms of the GNU Lesser General Public License as
- published by the Free Software Foundation; either version 2.1 of the
- License, or (at your option) any later version.
-
- The GNU C Library is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- Lesser General Public License for more details.
-
- You should have received a copy of the GNU Lesser General Public
- License along with the GNU C Library; if not, see
- <http://www.gnu.org/licenses/>. */
-
-#include <dl-vdso.h>
-#include <libc-vdso.h>
-
-long int (*VDSO_SYMBOL (gettimeofday)) (struct timeval *, void *)
- attribute_hidden;
-long int (*VDSO_SYMBOL (clock_gettime)) (clockid_t, struct timespec *)
- attribute_hidden;
-
-static inline void
-_libc_vdso_platform_setup (void)
-{
- void *p = get_vdso_symbol ("__vdso_gettimeofday");
- PTR_MANGLE (p);
- VDSO_SYMBOL (gettimeofday) = p;
-
- p = get_vdso_symbol ("__vdso_clock_gettime");
- PTR_MANGLE (p);
- VDSO_SYMBOL (clock_gettime) = p;
-}
-
-#define VDSO_SETUP _libc_vdso_platform_setup
-
-#include <csu/init-first.c>
diff --git a/sysdeps/unix/sysv/linux/sparc/libc-vdso.h b/sysdeps/unix/sysv/linux/sparc/libc-vdso.h
deleted file mode 100644
index d20afcdf04..0000000000
--- a/sysdeps/unix/sysv/linux/sparc/libc-vdso.h
+++ /dev/null
@@ -1,29 +0,0 @@
-/* VDSO function pointer declarations.
- Copyright (C) 2018-2019 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/>. */
-
-#ifndef _LIBC_VDSO_H
-#define _LIBC_VDSO_H
-
-#include <sysdep-vdso.h>
-
-extern long int (*VDSO_SYMBOL(gettimeofday)) (struct timeval *, void *)
- attribute_hidden;
-extern long int (*VDSO_SYMBOL(clock_gettime)) (clockid_t, struct timespec *);
-
-#endif /* _LIBC_VDSO_H */
diff --git a/sysdeps/unix/sysv/linux/sparc/sysdep.h b/sysdeps/unix/sysv/linux/sparc/sysdep.h
index 3bfb1fc60e..925b57082d 100644
--- a/sysdeps/unix/sysv/linux/sparc/sysdep.h
+++ b/sysdeps/unix/sysv/linux/sparc/sysdep.h
@@ -45,8 +45,8 @@
# define VDSO_HASH 61765110
/* List of system calls which are supported as vsyscalls. */
-# define HAVE_CLOCK_GETTIME_VSYSCALL 1
-# define HAVE_GETTIMEOFDAY_VSYSCALL 1
+# define HAVE_CLOCK_GETTIME_VSYSCALL "__vdso_clock_gettime"
+# define HAVE_GETTIMEOFDAY_VSYSCALL "__vdso_gettimeofday"
#undef INLINE_SYSCALL
#define INLINE_SYSCALL(name, nr, args...) \
diff --git a/sysdeps/unix/sysv/linux/sysdep-vdso.h b/sysdeps/unix/sysv/linux/sysdep-vdso.h
index 5fec208380..3da5417fff 100644
--- a/sysdeps/unix/sysv/linux/sysdep-vdso.h
+++ b/sysdeps/unix/sysv/linux/sysdep-vdso.h
@@ -19,7 +19,7 @@
#ifndef SYSDEP_VDSO_LINUX_H
# define SYSDEP_VDSO_LINUX_H
-#define VDSO_SYMBOL(__name) __vdso_##__name
+#include <dl-vdso.h>
#ifndef INTERNAL_VSYSCALL_CALL
# define INTERNAL_VSYSCALL_CALL(funcptr, err, nr, args...) \
diff --git a/sysdeps/unix/sysv/linux/x86/libc-vdso.h b/sysdeps/unix/sysv/linux/x86/libc-vdso.h
deleted file mode 100644
index c9aa1c8a72..0000000000
--- a/sysdeps/unix/sysv/linux/x86/libc-vdso.h
+++ /dev/null
@@ -1,33 +0,0 @@
-/* Resolve function pointers to VDSO functions.
- Copyright (C) 2005-2019 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/>. */
-
-#ifndef _LIBC_VDSO_H
-#define _LIBC_VDSO_H
-
-#include <time.h>
-#include <sys/time.h>
-
-#include <sysdep-vdso.h>
-
-extern long int (*VDSO_SYMBOL(clock_gettime)) (clockid_t, struct timespec *)
- attribute_hidden;
-
-extern long int (*VDSO_SYMBOL(getcpu)) (unsigned *, unsigned *, void *)
- attribute_hidden;
-
-#endif /* _LIBC_VDSO_H */
diff --git a/sysdeps/unix/sysv/linux/x86_64/init-first.c b/sysdeps/unix/sysv/linux/x86_64/init-first.c
deleted file mode 100644
index aede1c858d..0000000000
--- a/sysdeps/unix/sysv/linux/x86_64/init-first.c
+++ /dev/null
@@ -1,48 +0,0 @@
-/* Initialization code run first thing by the ELF startup code. Linux/x86-64.
- Copyright (C) 2007-2019 Free Software Foundation, Inc.
- This file is part of the GNU C Library.
-
- The GNU C Library is free software; you can redistribute it and/or
- modify it under the terms of the GNU Lesser General Public
- License as published by the Free Software Foundation; either
- version 2.1 of the License, or (at your option) any later version.
-
- The GNU C Library is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- Lesser General Public License for more details.
-
- You should have received a copy of the GNU Lesser General Public
- License along with the GNU C Library; if not, see
- <http://www.gnu.org/licenses/>. */
-
-#include <time.h>
-#include <sysdep.h>
-#include <dl-vdso.h>
-#include <libc-vdso.h>
-
-long int (*VDSO_SYMBOL(clock_gettime)) (clockid_t, struct timespec *)
- attribute_hidden;
-long int (*VDSO_SYMBOL(getcpu)) (unsigned *, unsigned *, void *)
- attribute_hidden;
-
-extern __typeof (clock_gettime) __syscall_clock_gettime attribute_hidden;
-
-
-static inline void
-__vdso_platform_setup (void)
-{
- void *p = get_vdso_symbol ("__vdso_clock_gettime");
- if (p == NULL)
- p = __syscall_clock_gettime;
- PTR_MANGLE (p);
- VDSO_SYMBOL(clock_gettime) = p;
-
- p = get_vdso_symbol ("__vdso_getcpu");
- PTR_MANGLE (p);
- VDSO_SYMBOL(getcpu) = p;
-}
-
-#define VDSO_SETUP __vdso_platform_setup
-
-#include <csu/init-first.c>
diff --git a/sysdeps/unix/sysv/linux/x86_64/sysdep.h b/sysdeps/unix/sysv/linux/x86_64/sysdep.h
index 197329f4dc..4541c0d492 100644
--- a/sysdeps/unix/sysv/linux/x86_64/sysdep.h
+++ b/sysdeps/unix/sysv/linux/x86_64/sysdep.h
@@ -374,9 +374,9 @@
# define VDSO_HASH 61765110
/* List of system calls which are supported as vsyscalls. */
-# define HAVE_CLOCK_GETTIME_VSYSCALL 1
-# define HAVE_GETTIMEOFDAY_VSYSCALL 1
-# define HAVE_GETCPU_VSYSCALL 1
+# define HAVE_CLOCK_GETTIME_VSYSCALL "__vdso_clock_gettime"
+# define HAVE_GETTIMEOFDAY_VSYSCALL "__vdso_gettimeofday"
+# define HAVE_GETCPU_VSYSCALL "__vdso_getcpu"
# define SINGLE_THREAD_BY_GLOBAL 1
--
2.17.1