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97554e4382
This patch removes the architecture specific gettimeofday implementation
to use the vDSO symbol and consolidate it on a common Linux one.
Similar to clock_gettime and clock_getres vDSO implementation, each port
that supports gettimeofday through vDSO should just implement INLINE_VSYSCALL
to access the symbol and define HAVE_{GETTIME,GETRES}_VSYSCAL as 1.
86 lines
2.8 KiB
C
86 lines
2.8 KiB
C
/* Initialization code run first thing by the ELF startup code. Linux/PowerPC.
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Copyright (C) 2007-2015 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<http://www.gnu.org/licenses/>. */
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#ifdef SHARED
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# include <dl-vdso.h>
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# include <libc-vdso.h>
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int (*VDSO_SYMBOL(gettimeofday)) (struct timeval *, void *)
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attribute_hidden;
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int (*VDSO_SYMBOL(clock_gettime)) (clockid_t, struct timespec *);
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int (*VDSO_SYMBOL(clock_getres)) (clockid_t, struct timespec *);
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unsigned long long (*VDSO_SYMBOL(get_tbfreq)) (void);
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int (*VDSO_SYMBOL(getcpu)) (unsigned *, unsigned *);
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time_t (*VDSO_SYMBOL(time)) (time_t *);
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#if defined(__PPC64__) || defined(__powerpc64__)
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void *VDSO_SYMBOL(sigtramp_rt64);
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#else
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void *VDSO_SYMBOL(sigtramp32);
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void *VDSO_SYMBOL(sigtramp_rt32);
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#endif
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static inline void
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_libc_vdso_platform_setup (void)
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{
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PREPARE_VERSION (linux2615, "LINUX_2.6.15", 123718565);
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void *p = _dl_vdso_vsym ("__kernel_gettimeofday", &linux2615);
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PTR_MANGLE (p);
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VDSO_SYMBOL (gettimeofday) = p;
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p = _dl_vdso_vsym ("__kernel_clock_gettime", &linux2615);
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PTR_MANGLE (p);
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VDSO_SYMBOL (clock_gettime) = p;
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p = _dl_vdso_vsym ("__kernel_clock_getres", &linux2615);
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PTR_MANGLE (p);
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VDSO_SYMBOL (clock_getres) = p;
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p = _dl_vdso_vsym ("__kernel_get_tbfreq", &linux2615);
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PTR_MANGLE (p);
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VDSO_SYMBOL (get_tbfreq) = p;
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p = _dl_vdso_vsym ("__kernel_getcpu", &linux2615);
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PTR_MANGLE (p);
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VDSO_SYMBOL (getcpu) = p;
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p = _dl_vdso_vsym ("__kernel_time", &linux2615);
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PTR_MANGLE (p);
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VDSO_SYMBOL (time) = p;
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/* PPC64 uses only one signal trampoline symbol, while PPC32 will use
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two depending if SA_SIGINFO is used (__kernel_sigtramp_rt32) or not
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(__kernel_sigtramp32).
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There is no need to pointer mangle these symbol because they will
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used only for pointer comparison. */
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#if defined(__PPC64__) || defined(__powerpc64__)
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VDSO_SYMBOL(sigtramp_rt64) = _dl_vdso_vsym ("__kernel_sigtramp_rt64",
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&linux2615);
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#else
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VDSO_SYMBOL(sigtramp32) = _dl_vdso_vsym ("__kernel_sigtramp32", &linux2615);
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VDSO_SYMBOL(sigtramp_rt32) = _dl_vdso_vsym ("__kernel_sigtramp_rt32",
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&linux2615);
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#endif
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}
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# define VDSO_SETUP _libc_vdso_platform_setup
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#endif
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#include <csu/init-first.c>
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