diff options
| -rw-r--r-- | ChangeLog | 7 | ||||
| -rw-r--r-- | sysdeps/gnu/configure | 42 | ||||
| -rw-r--r-- | sysdeps/unix/sysv/linux/powerpc/bits/libc-vdso.h | 10 | ||||
| -rw-r--r-- | sysdeps/unix/sysv/linux/powerpc/gettimeofday.c | 48 |
4 files changed, 53 insertions, 54 deletions
diff --git a/ChangeLog b/ChangeLog index 2e8affb197..fe92b82479 100644 --- a/ChangeLog +++ b/ChangeLog @@ -1,3 +1,10 @@ +2013-03-15 Adhemerval Zanella <azanella@linux.vnet.ibm.com> + + * sysdeps/unix/sysv/linux/powerpc/bits/libc-vdso.h (VDSO_IFUNC_RET): Add + macro to return vdso values correctly in IFUNC implementations. + * sysdeps/unix/sysv/linux/powerpc/gettimeofday.c (__gettimeofday): + Optimization by using IFUNC. + 2013-03-15 Siddhesh Poyarekar <siddhesh@redhat.com> Richard Henderson <rth@redhat.com> Tulio Magno Quites Machado Filho <tuliom@linux.vnet.ibm.com> diff --git a/sysdeps/gnu/configure b/sysdeps/gnu/configure index 26327ca3b4..e69de29bb2 100644 --- a/sysdeps/gnu/configure +++ b/sysdeps/gnu/configure @@ -1,42 +0,0 @@ -# This file is generated from configure.in by Autoconf. DO NOT EDIT! - -# Local configure fragment for sysdeps/gnu. - -# The Filesystem Hierarchy Standard prescribes where to place "essential" -# files. I.e., when the installation prefix is "/usr" we have to place -# shared library objects and the configuration files on the root partition -# in /lib and /etc. -case "$prefix" in -/usr | /usr/) - # 64-bit libraries on bi-arch platforms go in /lib64 instead of /lib. - # Allow earlier configure scripts to handle libc_cv_slibdir, libdir, - # and libc_cv_localedir. - test -n "$libc_cv_slibdir" || \ - case $machine in - sparc/sparc64 | x86_64* | powerpc/powerpc64 | s390/s390-64) - libc_cv_slibdir=/lib64 - if test "$libdir" = '${exec_prefix}/lib'; then - libdir='${exec_prefix}/lib64'; - # Locale data can be shared between 32bit and 64bit libraries - libc_cv_localedir='${exec_prefix}/lib/locale' - fi - ;; - *) - libc_cv_slibdir=/lib - ;; - esac - # Allow the user to override the path with --sysconfdir. - if test "$sysconfdir" = '${prefix}/etc'; then - libc_cv_sysconfdir=/etc - else - libc_cv_sysconfdir=$sysconfdir - fi - # Allow the user to override the path with --localstatedir. - if test "$localstatedir" = '${prefix}/var'; then - libc_cv_localstatedir=/var - else - libc_cv_localstatedir=$localstatedir - fi - libc_cv_rootsbindir=/sbin - ;; -esac diff --git a/sysdeps/unix/sysv/linux/powerpc/bits/libc-vdso.h b/sysdeps/unix/sysv/linux/powerpc/bits/libc-vdso.h index 545fda462a..5f5fc1eb3a 100644 --- a/sysdeps/unix/sysv/linux/powerpc/bits/libc-vdso.h +++ b/sysdeps/unix/sysv/linux/powerpc/bits/libc-vdso.h @@ -32,6 +32,16 @@ extern void *__vdso_get_tbfreq; extern void *__vdso_getcpu; +/* This macro is needed for PPC64 to return a skeleton OPD entry of a vDSO + symbol. This works because _dl_vdso_vsym always return the function + address, and no vDSO symbols use the TOC or chain pointers from the OPD + so we can allow them to be garbage. */ +#if defined(__PPC64__) || defined(__powerpc64__) +#define VDSO_IFUNC_RET(value) &value +#else +#define VDSO_IFUNC_RET(value) value +#endif + #endif #endif /* _LIBC_VDSO_H */ diff --git a/sysdeps/unix/sysv/linux/powerpc/gettimeofday.c b/sysdeps/unix/sysv/linux/powerpc/gettimeofday.c index f607485072..6506d75e64 100644 --- a/sysdeps/unix/sysv/linux/powerpc/gettimeofday.c +++ b/sysdeps/unix/sysv/linux/powerpc/gettimeofday.c @@ -15,25 +15,49 @@ License along with the GNU C Library; if not, see <http://www.gnu.org/licenses/>. */ -#include <sysdep.h> -#include <stddef.h> + #include <sys/time.h> -#include <time.h> -#include <hp-timing.h> -#include <bits/libc-vdso.h> +#ifdef SHARED + +# include <dl-vdso.h> +# include <bits/libc-vdso.h> + +void *gettimeofday_ifunc (void) __asm__ ("__gettimeofday"); + +static int +__gettimeofday_syscall (struct timeval *tv, struct timezone *tz) +{ + return INLINE_SYSCALL (gettimeofday, 2, tv, tz); +} + +void * +gettimeofday_ifunc (void) +{ + /* If the vDSO is not available we fall back syscall. */ + return (__vdso_gettimeofday ? VDSO_IFUNC_RET (__vdso_gettimeofday) + : __gettimeofday_syscall); +} +asm (".type __gettimeofday, %gnu_indirect_function"); + +/* This is doing "libc_hidden_def (__gettimeofday)" but the compiler won't + let us do it in C because it doesn't know we're defining __gettimeofday + here in this file. */ +asm (".globl __GI___gettimeofday\n" + "__GI___gettimeofday = __gettimeofday"); + +#else -/* Get the current time of day and timezone information, - putting it into *TV and *TZ. If TZ is NULL, *TZ is not filled. - Returns 0 on success, -1 on errors. */ +# include <sysdep.h> +# include <errno.h> int -__gettimeofday (tv, tz) - struct timeval *tv; - struct timezone *tz; +__gettimeofday (struct timeval *tv, struct timezone *tz) { - return INLINE_VSYSCALL (gettimeofday, 2, tv, tz); + return INLINE_SYSCALL (gettimeofday, 2, tv, tz); } libc_hidden_def (__gettimeofday) + +#endif weak_alias (__gettimeofday, gettimeofday) libc_hidden_weak (gettimeofday) |