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linux: Enable vDSO for static linking as default (BZ#19767)
This patch assumes static vDSO is supported as default, it is now supported on all current architectures that support vDSO. It allows removing both ALWAYS_USE_VSYSCALL define, which an architecture requires to explicit define and USE_VSYSCALL (which defines vDSO only for shared or if architecture defines ALWAYS_USE_VSYSCALL). Checked with a build against all affected ABIs. [BZ #19767] * sysdeps/unix/sysv/linux/aarch64/sysdep.h (ALWAYS_USE_VSYSCALL): Remove definition. * sysdeps/unix/sysv/linux/arm/sysdep.h (ALWAYS_USE_VSYSCALL): Likewise. * sysdeps/unix/sysv/linux/i386/sysdep.h (ALWAYS_USE_VSYSCALL): Likewise. * sysdeps/unix/sysv/linux/mips/mips32/sysdep.h (ALWAYS_USE_VSYSCALL): Likewise. * sysdeps/unix/sysv/linux/mips/mips64/n32/sysdep.h (ALWAYS_USE_VSYSCALL): Likewise. * sysdeps/unix/sysv/linux/mips/mips64/n64/sysdep.h (ALWAYS_USE_VSYSCALL): Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc32/sysdep.h (ALWAYS_USE_VSYSCALL): Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc64/sysdep.h (ALWAYS_USE_VSYSCALL): Likewise. * sysdeps/unix/sysv/linux/riscv/sysdep.h (ALWAYS_USE_VSYSCALL): Likewise. * sysdeps/unix/sysv/linux/s390/s390-32/sysdep.h (ALWAYS_USE_VSYSCALL): Likewise. * sysdeps/unix/sysv/linux/s390/s390-64/sysdep.h (ALWAYS_USE_VSYSCALL): Likewise. * sysdeps/unix/sysv/linux/sparc/sysdep.h (ALWAYS_USE_VSYSCALL): Likewise. * sysdeps/unix/sysv/linux/x86_64/sysdep.h (ALWAYS_USE_VSYSCALL): Likewise. * sysdeps/unix/sysv/linux/x86/libc-vdso.h: Remove #if USE_VSYSCALL. * sysdeps/unix/sysv/linux/sysdep-vdso.h: Likewise. * sysdeps/unix/sysv/linux/sysdep.h (ALWAYS_USE_VSYSCALL, USE_VSYSCALL): Remove defitions.
This commit is contained in:
Adhemerval Zanella
parent
c9c1a413c0
commit
d665367f59
32
ChangeLog
32
ChangeLog
@ -1,5 +1,37 @@
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2019-08-05 Adhemerval Zanella <adhemerval.zanella@linaro.org>
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[BZ #19767]
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* sysdeps/unix/sysv/linux/aarch64/sysdep.h (ALWAYS_USE_VSYSCALL):
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Remove definition.
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* sysdeps/unix/sysv/linux/arm/sysdep.h (ALWAYS_USE_VSYSCALL):
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Likewise.
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* sysdeps/unix/sysv/linux/i386/sysdep.h (ALWAYS_USE_VSYSCALL):
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Likewise.
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* sysdeps/unix/sysv/linux/mips/mips32/sysdep.h (ALWAYS_USE_VSYSCALL):
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Likewise.
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* sysdeps/unix/sysv/linux/mips/mips64/n32/sysdep.h
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(ALWAYS_USE_VSYSCALL): Likewise.
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* sysdeps/unix/sysv/linux/mips/mips64/n64/sysdep.h
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(ALWAYS_USE_VSYSCALL): Likewise.
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* sysdeps/unix/sysv/linux/powerpc/powerpc32/sysdep.h
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(ALWAYS_USE_VSYSCALL): Likewise.
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* sysdeps/unix/sysv/linux/powerpc/powerpc64/sysdep.h
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(ALWAYS_USE_VSYSCALL): Likewise.
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* sysdeps/unix/sysv/linux/riscv/sysdep.h (ALWAYS_USE_VSYSCALL):
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Likewise.
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* sysdeps/unix/sysv/linux/s390/s390-32/sysdep.h
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(ALWAYS_USE_VSYSCALL): Likewise.
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* sysdeps/unix/sysv/linux/s390/s390-64/sysdep.h
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(ALWAYS_USE_VSYSCALL): Likewise.
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* sysdeps/unix/sysv/linux/sparc/sysdep.h (ALWAYS_USE_VSYSCALL):
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Likewise.
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* sysdeps/unix/sysv/linux/x86_64/sysdep.h (ALWAYS_USE_VSYSCALL):
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Likewise.
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* sysdeps/unix/sysv/linux/x86/libc-vdso.h: Remove #if USE_VSYSCALL.
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* sysdeps/unix/sysv/linux/sysdep-vdso.h: Likewise.
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* sysdeps/unix/sysv/linux/sysdep.h (ALWAYS_USE_VSYSCALL,
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USE_VSYSCALL): Remove defitions.
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[BZ #19767]
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* sysdeps/unix/sysv/linux/sparc/init-first.c: Remove #ifdef SHARED.
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* sysdeps/unix/sysv/linux/sparc/libc-vdso.h: Likewise.
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@ -19,9 +19,6 @@
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#ifndef _LINUX_AARCH64_SYSDEP_H
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#define _LINUX_AARCH64_SYSDEP_H 1
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/* Always enable vsyscalls on aarch64 */
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#define ALWAYS_USE_VSYSCALL 1
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#include <sysdeps/unix/sysdep.h>
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#include <sysdeps/aarch64/sysdep.h>
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#include <sysdeps/unix/sysv/linux/generic/sysdep.h>
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@ -20,9 +20,6 @@
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#ifndef _LINUX_ARM_SYSDEP_H
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#define _LINUX_ARM_SYSDEP_H 1
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/* Always enable vsyscalls on arm */
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#define ALWAYS_USE_VSYSCALL 1
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/* There is some commonality. */
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#include <sysdeps/unix/sysv/linux/sysdep.h>
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#include <sysdeps/unix/arm/sysdep.h>
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@ -19,9 +19,6 @@
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#ifndef _LINUX_I386_SYSDEP_H
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#define _LINUX_I386_SYSDEP_H 1
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/* Always enable vsyscalls on i386 */
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#define ALWAYS_USE_VSYSCALL 1
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/* There is some commonality. */
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#include <sysdeps/unix/sysv/linux/sysdep.h>
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#include <sysdeps/unix/i386/sysdep.h>
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@ -18,9 +18,6 @@
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#ifndef _LINUX_MIPS_MIPS32_SYSDEP_H
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#define _LINUX_MIPS_MIPS32_SYSDEP_H 1
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/* Always enable vsyscalls on mips32. */
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#define ALWAYS_USE_VSYSCALL 1
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/* There is some commonality. */
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#include <sysdeps/unix/sysv/linux/sysdep.h>
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#include <sysdeps/unix/mips/mips32/sysdep.h>
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@ -18,9 +18,6 @@
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#ifndef _LINUX_MIPS_SYSDEP_H
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#define _LINUX_MIPS_SYSDEP_H 1
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/* Always enable vsyscalls on n32. */
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#define ALWAYS_USE_VSYSCALL 1
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/* There is some commonality. */
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#include <sysdeps/unix/sysv/linux/sysdep.h>
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#include <sysdeps/unix/mips/mips64/n32/sysdep.h>
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@ -18,9 +18,6 @@
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#ifndef _LINUX_MIPS_SYSDEP_H
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#define _LINUX_MIPS_SYSDEP_H 1
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/* Always enable vsyscalls on n64. */
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#define ALWAYS_USE_VSYSCALL 1
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/* There is some commonality. */
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#include <sysdeps/unix/sysv/linux/sysdep.h>
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#include <sysdeps/unix/mips/mips64/n64/sysdep.h>
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@ -18,9 +18,6 @@
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#ifndef _LINUX_POWERPC_SYSDEP_H
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#define _LINUX_POWERPC_SYSDEP_H 1
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/* Always enable vsyscalls on powerpc32 */
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#define ALWAYS_USE_VSYSCALL 1
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#include <sysdeps/unix/sysv/linux/sysdep.h>
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#include <sysdeps/unix/powerpc/sysdep.h>
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#include <tls.h>
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@ -20,9 +20,6 @@
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#ifndef _LINUX_POWERPC_SYSDEP_H
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#define _LINUX_POWERPC_SYSDEP_H 1
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/* Always enable vsyscalls on powerpc64 */
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#define ALWAYS_USE_VSYSCALL 1
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#include <sysdeps/unix/sysv/linux/sysdep.h>
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#include <sysdeps/unix/powerpc/sysdep.h>
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#include <tls.h>
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@ -19,9 +19,6 @@
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#ifndef _LINUX_RISCV_SYSDEP_H
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#define _LINUX_RISCV_SYSDEP_H 1
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/* Always enable vsyscalls on riscv */
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#define ALWAYS_USE_VSYSCALL 1
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#include <sysdeps/unix/sysv/linux/generic/sysdep.h>
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#include <tls.h>
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@ -19,9 +19,6 @@
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#ifndef _LINUX_S390_SYSDEP_H
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#define _LINUX_S390_SYSDEP_H
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/* Always enable vsyscalls on s390-32. */
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#define ALWAYS_USE_VSYSCALL 1
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#include <sysdeps/s390/s390-32/sysdep.h>
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#include <sysdeps/unix/sysdep.h>
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#include <sysdeps/unix/sysv/linux/sysdep.h>
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@ -20,9 +20,6 @@
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#ifndef _LINUX_S390_SYSDEP_H
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#define _LINUX_S390_SYSDEP_H
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/* Always enable vsyscalls on s390-64. */
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#define ALWAYS_USE_VSYSCALL 1
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#include <sysdeps/s390/s390-64/sysdep.h>
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#include <sysdeps/unix/sysdep.h>
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#include <sysdeps/unix/sysv/linux/sysdep.h>
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@ -19,9 +19,6 @@
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#ifndef _LINUX_SPARC_SYSDEP_H
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#define _LINUX_SPARC_SYSDEP_H 1
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/* Always enable vsyscalls on sparc */
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#define ALWAYS_USE_VSYSCALL 1
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#include <sysdeps/unix/sysdep.h>
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#include <sysdeps/unix/sysv/linux/sysdep.h>
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#include <sysdeps/sparc/sysdep.h>
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@ -26,7 +26,7 @@
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funcptr (args)
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#endif
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#if USE_VSYSCALL && defined HAVE_VSYSCALL
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#ifdef HAVE_VSYSCALL
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# include <libc-vdso.h>
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@ -18,13 +18,6 @@
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#include <bits/wordsize.h>
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#include <kernel-features.h>
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/* By default only shared builds use vdso. */
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#ifndef ALWAYS_USE_VSYSCALL
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#define ALWAYS_USE_VSYSCALL 0
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#endif
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#define USE_VSYSCALL (defined (SHARED) || ALWAYS_USE_VSYSCALL)
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/* Set error number and return -1. A target may choose to return the
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internal function, __syscall_error, which sets errno and returns -1.
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We use -1l, instead of -1, so that it can be casted to (void *). */
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@ -22,9 +22,7 @@
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#include <time.h>
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#include <sys/time.h>
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#if USE_VSYSCALL
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# include <sysdep-vdso.h>
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#include <sysdep-vdso.h>
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extern long int (*VDSO_SYMBOL(clock_gettime)) (clockid_t, struct timespec *)
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attribute_hidden;
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@ -32,6 +30,4 @@ extern long int (*VDSO_SYMBOL(clock_gettime)) (clockid_t, struct timespec *)
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extern long int (*VDSO_SYMBOL(getcpu)) (unsigned *, unsigned *, void *)
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attribute_hidden;
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#endif
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#endif /* _LIBC_VDSO_H */
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@ -18,9 +18,6 @@
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#ifndef _LINUX_X86_64_SYSDEP_H
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#define _LINUX_X86_64_SYSDEP_H 1
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/* Always enable vsyscalls on x86_64 */
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#define ALWAYS_USE_VSYSCALL 1
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/* There is some commonality. */
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#include <sysdeps/unix/sysv/linux/sysdep.h>
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#include <sysdeps/unix/x86_64/sysdep.h>
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