diff options
Diffstat (limited to 'sysdeps/unix/sysv/linux/sparc')
-rw-r--r-- | sysdeps/unix/sysv/linux/sparc/Makefile | 4 | ||||
-rw-r--r-- | sysdeps/unix/sysv/linux/sparc/bits/shm.h | 4 | ||||
-rw-r--r-- | sysdeps/unix/sysv/linux/sparc/getshmlba.c | 40 |
3 files changed, 46 insertions, 2 deletions
diff --git a/sysdeps/unix/sysv/linux/sparc/Makefile b/sysdeps/unix/sysv/linux/sparc/Makefile index 96bf0bbd16..d769c48526 100644 --- a/sysdeps/unix/sysv/linux/sparc/Makefile +++ b/sysdeps/unix/sysv/linux/sparc/Makefile @@ -7,3 +7,7 @@ syscall-list-64bit-condition := __WORDSIZE == 64 ifeq ($(subdir),rt) librt-routines += rt-sysdep endif + +ifeq ($(subdir),sysvipc) +sysdep_routines += getshmlba +endif diff --git a/sysdeps/unix/sysv/linux/sparc/bits/shm.h b/sysdeps/unix/sysv/linux/sparc/bits/shm.h index b0966d61c2..eb530de98f 100644 --- a/sysdeps/unix/sysv/linux/sparc/bits/shm.h +++ b/sysdeps/unix/sysv/linux/sparc/bits/shm.h @@ -40,8 +40,8 @@ __BEGIN_DECLS /* Segment low boundary address multiple. */ -#define SHMLBA (__getpagesize ()) -extern int __getpagesize (void) __THROW __attribute__ ((__const__)); +#define SHMLBA (__getshmlba ()) +extern int __getshmlba (void) __attribute__ ((__const__)); /* Type to count number of attaches. */ diff --git a/sysdeps/unix/sysv/linux/sparc/getshmlba.c b/sysdeps/unix/sysv/linux/sparc/getshmlba.c new file mode 100644 index 0000000000..205bed2720 --- /dev/null +++ b/sysdeps/unix/sysv/linux/sparc/getshmlba.c @@ -0,0 +1,40 @@ +/* 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 <unistd.h> +#include <sys/shm.h> +#include <ldsodefs.h> + +int +__getshmlba (void) +{ + uint64_t hwcap = GLRO(dl_hwcap); + int pgsz = GLRO(dl_pagesize); + + if (hwcap & HWCAP_SPARC_V9) + { + if (pgsz < (16 * 1024)) + return 16 * 1024; + else + return pgsz; + } + else if (!(hwcap & HWCAP_SPARC_FLUSH)) + return 64 * 1024; + else + return 256 * 1024; +} |