[v2,02/12] linux: Update x86 vDSO symbols

Message ID	20191212181614.31782-2-adhemerval.zanella@linaro.org
State	Superseded
Headers	show Delivered-To: patch@linaro.org Received-SPF: pass (google.com: domain of libc-alpha-return-108015-patch=linaro.org@sourceware.org designates 209.132.180.131 as permitted sender) client-ip=209.132.180.131; DomainKey-Signature: a=rsa-sha1; c=nofws; d=sourceware.org; h=list-id :list-unsubscribe:list-subscribe:list-archive:list-post :list-help:sender:from:to:subject:date:message-id:in-reply-to :references; q=dns; s=default; b=OWxyz8rfywkqvKRmh2DtGz8ezUN8sGT uAbWo3a5nPG+acBTQVAj6g3Z0417HpFqJ1ooggsIO8lvZF83UdTEMKL5SweJ6yby XkBUKfXzfIXrb4oWgbtAfubieTPj7v9JwIDIhiY4q4+VTxpH2dK77klaiM0/8Sa5 k7rv9mhlEPGQ= Mailing-List: contact libc-alpha-help@sourceware.org; run by ezmlm Precedence: bulk Sender: libc-alpha-owner@sourceware.org From: Adhemerval Zanella <adhemerval.zanella@linaro.org> To: libc-alpha@sourceware.org Subject: [PATCH v2 02/12] linux: Update x86 vDSO symbols Date: Thu, 12 Dec 2019 15:16:04 -0300 Message-Id: <20191212181614.31782-2-adhemerval.zanella@linaro.org> In-Reply-To: <20191212181614.31782-1-adhemerval.zanella@linaro.org> References: <20191212181614.31782-1-adhemerval.zanella@linaro.org>
Series	[01/12] linux: Fix vDSO macros build with time64 interfaces \| expand [01/12] linux: Fix vDSO macros build with time64 interfaces [v2,02/12] linux: Update x86 vDSO symbols [03/12] x86: Make x32 use x86 time implementation [04/12] linux: Update mips vDSO symbols [05/12] Remove vDSO support from make-syscall.sh [v2,06/12] elf: Enable relro for static build [v2,07/12] elf: Move vDSO setup to rtld (BZ#24967) [08/12] Add support for clock_gettime64 vDSO [09/12] Enable vDSO clock_gettime64 for i386 [10/12] Enable vDSO clock_gettime64 for arm [11/12] Enable vDSO clock_gettime64 for mips [12/12] Add support for clock_getres64 vDSO

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20191212181614.31782-2-adhemerval.zanella@linaro.org

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From: Adhemerval Zanella <adhemerval.zanella@linaro.org>
To: libc-alpha@sourceware.org
Subject: [PATCH v2 02/12] linux: Update x86 vDSO symbols
Date: Thu, 12 Dec 2019 15:16:04 -0300
Message-Id: <20191212181614.31782-2-adhemerval.zanella@linaro.org>
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Series

[01/12] linux: Fix vDSO macros build with time64 interfaces | expand

Commit Message

Adhemerval Zanella Netto Dec. 12, 2019, 6:16 p.m. UTC

Changes from previous version:

  - Assume HAVE_TIME_VSYSCALL on x86 time implementation.

--

Add the missing time and clock_getres vDSO symbol names on x86.
For time, the iFUNC already uses expected name so it affects only
the static build.

The clock_getres is a new implementation added on Linux 5.3
(f66501dc53e72).

Checked on x86-linux-gnu and i686-linux-gnu.
---
 sysdeps/unix/sysv/linux/i386/sysdep.h   | 2 ++
 sysdeps/unix/sysv/linux/x86/time.c      | 2 --
 sysdeps/unix/sysv/linux/x86_64/sysdep.h | 2 ++
 3 files changed, 4 insertions(+), 2 deletions(-)

-- 
2.17.1

diff --git a/sysdeps/unix/sysv/linux/i386/sysdep.h b/sysdeps/unix/sysv/linux/i386/sysdep.h
index 7066ddc214..b2e750d490 100644
--- a/sysdeps/unix/sysv/linux/i386/sysdep.h
+++ b/sysdeps/unix/sysv/linux/i386/sysdep.h
@@ -315,6 +315,8 @@  struct libc_do_syscall_args
 /* List of system calls which are supported as vsyscalls.  */
 # define HAVE_CLOCK_GETTIME_VSYSCALL    "__vdso_clock_gettime"
 # define HAVE_GETTIMEOFDAY_VSYSCALL     "__vdso_gettimeofday"
+# define HAVE_TIME_VSYSCALL             "__vdso_time"
+# define HAVE_CLOCK_GETRES_VSYSCALL     "__vdso_clock_getres"
 
 /* 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/x86/time.c b/sysdeps/unix/sysv/linux/x86/time.c
index 74bae4b07a..0aee73826b 100644
--- a/sysdeps/unix/sysv/linux/x86/time.c
+++ b/sysdeps/unix/sysv/linux/x86/time.c
@@ -23,11 +23,9 @@ 
 static time_t
 time_vsyscall (time_t *t)
 {
-#ifdef HAVE_TIME_VSYSCALL
   time_t ret = INLINE_VSYSCALL (time, 1, t);
   if (ret != -1)
     return ret;
-#endif
   return INLINE_SYSCALL_CALL (time, t);
 }
 
diff --git a/sysdeps/unix/sysv/linux/x86_64/sysdep.h b/sysdeps/unix/sysv/linux/x86_64/sysdep.h
index 475b7d991a..965fd4b851 100644
--- a/sysdeps/unix/sysv/linux/x86_64/sysdep.h
+++ b/sysdeps/unix/sysv/linux/x86_64/sysdep.h
@@ -376,7 +376,9 @@ 
 /* List of system calls which are supported as vsyscalls.  */
 # define HAVE_CLOCK_GETTIME_VSYSCALL    "__vdso_clock_gettime"
 # define HAVE_GETTIMEOFDAY_VSYSCALL     "__vdso_gettimeofday"
+# define HAVE_TIME_VSYSCALL             "__vdso_time"
 # define HAVE_GETCPU_VSYSCALL		"__vdso_getcpu"
+# define HAVE_CLOCK_GETRES_VSYSCALL     "__vdso_clock_getres"
 
 # define SINGLE_THREAD_BY_GLOBAL		1

[v2,02/12] linux: Update x86 vDSO symbols

Commit Message

Patch