diff options
Diffstat (limited to 'sysdeps')
9 files changed, 136 insertions, 0 deletions
diff --git a/sysdeps/powerpc/sys/platform/ppc.h b/sysdeps/powerpc/sys/platform/ppc.h index 165652c7cc..3780f57ba1 100644 --- a/sysdeps/powerpc/sys/platform/ppc.h +++ b/sysdeps/powerpc/sys/platform/ppc.h @@ -20,6 +20,7 @@ #define _SYS_PLATFORM_PPC_H 1 #include <stdint.h> +#include <bits/ppc.h> /* Read the Time Base Register. */ static inline uint64_t diff --git a/sysdeps/unix/sysv/linux/powerpc/Makefile b/sysdeps/unix/sysv/linux/powerpc/Makefile index f6dccd9a3f..6bdf4dc7f5 100644 --- a/sysdeps/unix/sysv/linux/powerpc/Makefile +++ b/sysdeps/unix/sysv/linux/powerpc/Makefile @@ -16,3 +16,9 @@ endif ifeq ($(subdir),elf) sysdep_routines += dl-vdso endif + +ifeq ($(subdir),misc) +sysdep_headers += bits/ppc.h +sysdep_routines += get_clockfreq get_timebase_freq +tests += test-gettimebasefreq +endif diff --git a/sysdeps/unix/sysv/linux/powerpc/bits/ppc.h b/sysdeps/unix/sysv/linux/powerpc/bits/ppc.h new file mode 100644 index 0000000000..76542d9d86 --- /dev/null +++ b/sysdeps/unix/sysv/linux/powerpc/bits/ppc.h @@ -0,0 +1,33 @@ +/* Facilities specific to the PowerPC architecture on Linux + Copyright (C) 2012 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, see + <http://www.gnu.org/licenses/>. */ + +#ifndef _BITS_PPC_H +#define _BITS_PPC_H + +#ifndef _SYS_PLATFORM_PPC_H +# error "Never include this file directly; use <sys/platform/ppc.h> instead." +#endif + +__BEGIN_DECLS + +/* Read the time base frequency. */ +extern uint64_t __ppc_get_timebase_freq (void); + +__END_DECLS + +#endif diff --git a/sysdeps/unix/sysv/linux/powerpc/get_timebase_freq.c b/sysdeps/unix/sysv/linux/powerpc/get_timebase_freq.c new file mode 100644 index 0000000000..f62ed86055 --- /dev/null +++ b/sysdeps/unix/sysv/linux/powerpc/get_timebase_freq.c @@ -0,0 +1,26 @@ +/* Get the frequency of the time base. + Copyright (C) 2012 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, see + <http://www.gnu.org/licenses/>. */ + +#include <libc-internal.h> + +uint64_t +__get_timebase_freq (void) +{ + return (uint64_t) __get_clockfreq (); +} +weak_alias (__get_timebase_freq, __ppc_get_timebase_freq) diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc32/Versions b/sysdeps/unix/sysv/linux/powerpc/powerpc32/Versions index 6fa0119e95..8d1c3a59de 100644 --- a/sysdeps/unix/sysv/linux/powerpc/powerpc32/Versions +++ b/sysdeps/unix/sysv/linux/powerpc/powerpc32/Versions @@ -30,4 +30,7 @@ libc { GLIBC_2.11 { fallocate64; } + GLIBC_2.17 { + __ppc_get_timebase_freq; + } } diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/nptl/libc.abilist b/sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/nptl/libc.abilist index 75123b9f3a..ab96361d40 100644 --- a/sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/nptl/libc.abilist +++ b/sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/nptl/libc.abilist @@ -1775,6 +1775,7 @@ GLIBC_2.16 GLIBC_2.17 GLIBC_2.17 A secure_getenv F + __ppc_get_timebase_freq F GLIBC_2.2 GLIBC_2.2 A _IO_adjust_wcolumn F diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc64/Versions b/sysdeps/unix/sysv/linux/powerpc/powerpc64/Versions index 8334741aec..3ff01d1c14 100644 --- a/sysdeps/unix/sysv/linux/powerpc/powerpc64/Versions +++ b/sysdeps/unix/sysv/linux/powerpc/powerpc64/Versions @@ -19,4 +19,7 @@ libc { setcontext; swapcontext; } + GLIBC_2.17 { + __ppc_get_timebase_freq; + } } diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc64/nptl/libc.abilist b/sysdeps/unix/sysv/linux/powerpc/powerpc64/nptl/libc.abilist index e2484d3f22..a60b72ad1a 100644 --- a/sysdeps/unix/sysv/linux/powerpc/powerpc64/nptl/libc.abilist +++ b/sysdeps/unix/sysv/linux/powerpc/powerpc64/nptl/libc.abilist @@ -81,6 +81,7 @@ GLIBC_2.16 GLIBC_2.17 GLIBC_2.17 A secure_getenv F + __ppc_get_timebase_freq F GLIBC_2.3 GLIBC_2.3 A _Exit F diff --git a/sysdeps/unix/sysv/linux/powerpc/test-gettimebasefreq.c b/sysdeps/unix/sysv/linux/powerpc/test-gettimebasefreq.c new file mode 100644 index 0000000000..a3f3bd6f55 --- /dev/null +++ b/sysdeps/unix/sysv/linux/powerpc/test-gettimebasefreq.c @@ -0,0 +1,62 @@ +/* Check __ppc_get_timebase_freq() for architecture changes + Copyright (C) 2012 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, see + <http://www.gnu.org/licenses/>. */ + +/* Test if __ppc_get_timebase_freq() works and is different from zero. A read + failure might indicate a Linux Kernel change. + This test also use the frequency to compute the real elapsed time. */ + +#include <inttypes.h> +#include <stdio.h> + +#include <sys/platform/ppc.h> + +/* Maximum value of the Time Base Register: 2^60 - 1. */ +#define MAX_TB 0xFFFFFFFFFFFFFFF + +static int +do_test (void) +{ + uint64_t t1, t2, f, diff; + + t1 = __ppc_get_timebase (); + printf ("t1 = %"PRIu64"\n", t1); + + f = __ppc_get_timebase_freq (); + printf ("Time Base frequency = %"PRIu64" Hz\n", f); + + if (f == 0) { + printf ("Fail: The time base frequency can't be zero."); + return 1; + } + + t2 = __ppc_get_timebase (); + printf ("t2 = %"PRIu64"\n", t2); + + if (t2 > t1) { + diff = t2 - t1; + } else { + diff = (MAX_TB - t2) + t1; + } + + printf ("Elapsed time = %1.2f usecs\n", (double) diff * 1000000 / f ); + + return 0; +} + +#define TEST_FUNCTION do_test () +#include "../test-skeleton.c" |