From 8c2e201ba9e016820b9a5d934836b9287338a10f Mon Sep 17 00:00:00 2001 From: Ulrich Drepper Date: Fri, 30 Dec 2005 07:32:48 +0000 Subject: 2005-12-08 Steven Munroe Tom Gall * elf/rtld.c (dl_main): Initialize l_local_scope for sysinfo_map. * sysdeps/powerpc/elf/libc-start.c: Move this... * sysdeps/unix/sysv/linux/powerpc/libc-start.c: ...to here. * sysdeps/powerpc/powerpc32/dl-start.S: Add _dl_main_dispatch label. * sysdeps/powerpc/powerpc32/hp-timing.h: New file. * sysdeps/unix/sysv/linux/powerpc/Versions: New file. * sysdeps/unix/sysv/linux/clock_getres.c: If HAVE_CLOCK_GETRES_VSYSCALL is not defined, redefine INTERNAL_VSYSCALL and INLINE_VSYSCALL to INTERNAL_SYSCALL and INLINE_SYSCALL respectively. Otherwise include . Use INLINE_VSYSCALL and INTERNAL_SYSCALL instead of the normal versions throughout the code. * sysdeps/unix/sysv/linux/clock_gettime.c: Likewise if HAVE_CLOCK_GETTIME_VSYSCALL is defined. * sysdeps/unix/sysv/linux/powerpc/bits/libc-vdso.h: New file. * sysdeps/unix/sysv/linux/powerpc/dl-vdso.c: New file. * sysdeps/unix/sysv/linux/powerpc/dl-vdso.h: New file. * sysdeps/unix/sysv/linux/powerpc/get_clockfreq.c: Use vDSO. * sysdeps/unix/sysv/linux/powerpc/gettimeofday.c: New file. * sysdeps/unix/sysv/linux/powerpc/Makefile: Add dl-vdso to routines. * sysdeps/unix/sysv/linux/powerpc/powerpc32/sysdep.h: Define INLINE_VSYSCALL, INTERNAL_VSYSCALL, INTERNAL_SYSCALL_NCS, INTERNAL_VSYSCALL_NO_SYSCALL_FALLBACK, HAVE_CLOCK_GETRES_VSYSCALL, and HAVE_CLOCK_GETTIME_VSYSCALL. * sysdeps/unix/sysv/linux/powerpc/powerpc64/sysdep.h: Likewise. --- sysdeps/powerpc/powerpc32/dl-start.S | 3 +- sysdeps/powerpc/powerpc32/hp-timing.h | 82 +++++++++++++++++++++++++++++++++++ 2 files changed, 84 insertions(+), 1 deletion(-) create mode 100644 sysdeps/powerpc/powerpc32/hp-timing.h (limited to 'sysdeps/powerpc/powerpc32') diff --git a/sysdeps/powerpc/powerpc32/dl-start.S b/sysdeps/powerpc/powerpc32/dl-start.S index e1f7f6e24a..7403a352fa 100644 --- a/sysdeps/powerpc/powerpc32/dl-start.S +++ b/sysdeps/powerpc/powerpc32/dl-start.S @@ -1,5 +1,5 @@ /* Machine-dependent ELF startup code. PowerPC version. - Copyright (C) 1995-2000, 2002, 2004 Free Software Foundation, Inc. + Copyright (C) 1995-2000, 2002, 2004, 2005 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 @@ -98,6 +98,7 @@ ENTRY(_dl_start_user) Take the opportunity to clear LR, so anyone who accidentally returns from _start gets SEGV. Also clear the next few words of the stack. */ +ENTRY(_dl_main_dispatch) li r31,0 stw r31,0(r1) mtlr r31 diff --git a/sysdeps/powerpc/powerpc32/hp-timing.h b/sysdeps/powerpc/powerpc32/hp-timing.h new file mode 100644 index 0000000000..b62b0f2138 --- /dev/null +++ b/sysdeps/powerpc/powerpc32/hp-timing.h @@ -0,0 +1,82 @@ +/* High precision, low overhead timing functions. Linux/PPC32 version. + Copyright (C) 2005 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, write to the Free + Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + 02111-1307 USA. */ + +#ifndef _HP_TIMING_H +#define _HP_TIMING_H 1 + + +/* There are no generic definitions for the times. We could write something + using the `gettimeofday' system call where available but the overhead of + the system call might be too high. + + In case a platform supports timers in the hardware the following macros + and types must be defined: + + - HP_TIMING_AVAIL: test for availability. + + - HP_TIMING_INLINE: this macro is non-zero if the functionality is not + implemented using function calls but instead uses some inlined code + which might simply consist of a few assembler instructions. We have to + know this since we might want to use the macros here in places where we + cannot make function calls. + + - hp_timing_t: This is the type for variables used to store the time + values. + + - HP_TIMING_ZERO: clear `hp_timing_t' object. + + - HP_TIMING_NOW: place timestamp for current time in variable given as + parameter. + + - HP_TIMING_DIFF_INIT: do whatever is necessary to be able to use the + HP_TIMING_DIFF macro. + + - HP_TIMING_DIFF: compute difference between two times and store it + in a third. Source and destination might overlap. + + - HP_TIMING_ACCUM: add time difference to another variable. This might + be a bit more complicated to implement for some platforms as the + operation should be thread-safe and 64bit arithmetic on 32bit platforms + is not. + + - HP_TIMING_ACCUM_NT: this is the variant for situations where we know + there are no threads involved. + + - HP_TIMING_PRINT: write decimal representation of the timing value into + the given string. This operation need not be inline even though + HP_TIMING_INLINE is specified. + +*/ + +/* Provide dummy definitions. */ +#define HP_TIMING_AVAIL (0) +#define HP_TIMING_INLINE (0) +typedef unsigned long long int hp_timing_t; +#define HP_TIMING_ZERO(Var) +#define HP_TIMING_NOW(var) +#define HP_TIMING_DIFF_INIT() +#define HP_TIMING_DIFF(Diff, Start, End) +#define HP_TIMING_ACCUM(Sum, Diff) +#define HP_TIMING_ACCUM_NT(Sum, Diff) +#define HP_TIMING_PRINT(Buf, Len, Val) + +/* Since this implementation is not available we tell the user about it. */ +#define HP_TIMING_NONAVAIL 1 + +#endif /* hp-timing.h */ -- cgit 1.4.1