diff options
| -rw-r--r-- | ChangeLog | 2 | ||||
| -rw-r--r-- | sysdeps/unix/sysv/linux/tile/sysconf.c | 75 |
2 files changed, 77 insertions, 0 deletions
@@ -1,5 +1,7 @@ 2014-10-02 Chris Metcalf <cmetcalf@tilera.com> + * sysdeps/unix/sysv/linux/tile/sysconf.c: New file. + * sysdeps/tile/tilegx/string-endian.h (STRSHIFT): New macro. * sysdeps/tile/tilegx/strcasestr.c: New file. * sysdeps/tile/tilegx/strnlen.c: New file. diff --git a/sysdeps/unix/sysv/linux/tile/sysconf.c b/sysdeps/unix/sysv/linux/tile/sysconf.c new file mode 100644 index 0000000000..5db983c7f5 --- /dev/null +++ b/sysdeps/unix/sysv/linux/tile/sysconf.c @@ -0,0 +1,75 @@ +/* Copyright (C) 2014 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 <unistd.h> +#include <sys/sysinfo.h> +#include <arch/chip.h> + +static long int linux_sysconf (int name); + +/* Get the value of the system variable NAME. */ +long int +__sysconf (int name) +{ + /* Currently we support only tilepro and tilegx, which have + statically-known cache sizes. */ + switch (name) + { + /* Level 1 cache. */ + case _SC_LEVEL1_ICACHE_SIZE: + return CHIP_L1I_CACHE_SIZE(); + case _SC_LEVEL1_ICACHE_ASSOC: + return CHIP_L1I_ASSOC(); + case _SC_LEVEL1_ICACHE_LINESIZE: + return CHIP_L1I_LINE_SIZE(); + case _SC_LEVEL1_DCACHE_SIZE: + return CHIP_L1D_CACHE_SIZE(); + case _SC_LEVEL1_DCACHE_ASSOC: + return CHIP_L1D_ASSOC(); + case _SC_LEVEL1_DCACHE_LINESIZE: + return CHIP_L1D_LINE_SIZE(); + + /* Level 2 cache. */ + case _SC_LEVEL2_CACHE_SIZE: + return CHIP_L2_CACHE_SIZE(); + case _SC_LEVEL2_CACHE_ASSOC: + return CHIP_L2_ASSOC(); + case _SC_LEVEL2_CACHE_LINESIZE: + return CHIP_L2_LINE_SIZE(); + + /* Level 3 cache is layered on level 2 cache. */ + case _SC_LEVEL3_CACHE_SIZE: + return CHIP_L2_CACHE_SIZE() * __get_nprocs(); + case _SC_LEVEL3_CACHE_ASSOC: + return CHIP_L2_ASSOC(); + case _SC_LEVEL3_CACHE_LINESIZE: + return CHIP_L2_LINE_SIZE(); + + /* No level 4 cache. */ + case _SC_LEVEL4_CACHE_SIZE: + case _SC_LEVEL4_CACHE_ASSOC: + case _SC_LEVEL4_CACHE_LINESIZE: + return -1; + } + + return linux_sysconf (name); +} + +/* Now the generic Linux version. */ +#undef __sysconf +#define __sysconf static linux_sysconf +#include <sysdeps/unix/sysv/linux/sysconf.c> |