From 124ec188720b6bdea85ade49e7ea195161b12fce Mon Sep 17 00:00:00 2001 From: Mike Frysinger Date: Sat, 5 Jan 2008 10:05:27 +0000 Subject: Chris Zankel writes: The following patches add support for the Xtensa processor architecture to uClibc. They are based on a recent SVN checkout (12/05/2007). The first patch (attached to this post) adds Xtensa support to various shared configuration and make files. The following patches then include the Xtensa specific files and directories. I welcome any feedback and would appreciate it if you could include the patches into the mainline tree. I am certainly committed to maintain the port. Bob Wilson was kind enough to review the patches. Some notes about the architecture: Xtensa is a configurable and extensible processor architecture developed by Tensilica. For more information, please visit: www.linux-xtensa.org. --- libc/sysdeps/linux/xtensa/bits/shm.h | 115 +++++++++++++++++++++++++++++++++++ 1 file changed, 115 insertions(+) create mode 100644 libc/sysdeps/linux/xtensa/bits/shm.h (limited to 'libc/sysdeps/linux/xtensa/bits/shm.h') diff --git a/libc/sysdeps/linux/xtensa/bits/shm.h b/libc/sysdeps/linux/xtensa/bits/shm.h new file mode 100644 index 000000000..de41d0d99 --- /dev/null +++ b/libc/sysdeps/linux/xtensa/bits/shm.h @@ -0,0 +1,115 @@ +/* Copyright (C) 1995, 1996, 1997, 2000, 2002, 2007 + 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., 51 Franklin Street - Fifth Floor, + Boston, MA 02110-1301, USA. */ + +#ifndef _SYS_SHM_H +# error "Never include directly; use instead." +#endif + +#include + +/* Permission flag for shmget. */ +#define SHM_R 0400 /* or S_IRUGO from */ +#define SHM_W 0200 /* or S_IWUGO from */ + +/* Flags for `shmat'. */ +#define SHM_RDONLY 010000 /* attach read-only else read-write */ +#define SHM_RND 020000 /* round attach address to SHMLBA */ +#define SHM_REMAP 040000 /* take-over region on attach */ + +/* Commands for `shmctl'. */ +#define SHM_LOCK 11 /* lock segment (root only) */ +#define SHM_UNLOCK 12 /* unlock segment (root only) */ + +__BEGIN_DECLS + +/* Segment low boundary address multiple. */ +#define SHMLBA (__getpagesize ()) +extern int __getpagesize (void) __THROW __attribute__ ((__const__)); + + +/* Type to count number of attaches. */ +typedef unsigned long int shmatt_t; + +/* Data structure describing a set of semaphores. */ +struct shmid_ds + { + struct ipc_perm shm_perm; /* operation permission struct */ + size_t shm_segsz; /* size of segment in bytes */ +#if defined (__XTENSA_EL__) + __time_t shm_atime; /* time of last shmat() */ + unsigned long int __unused1; + __time_t shm_dtime; /* time of last shmdt() */ + unsigned long int __unused2; + __time_t shm_ctime; /* time of last change by shmctl() */ + unsigned long int __unused3; +#elif defined (__XTENSA_EB__) + unsigned long int __unused1; + __time_t shm_atime; /* time of last shmat() */ + unsigned long int __unused2; + __time_t shm_dtime; /* time of last shmdt() */ + unsigned long int __unused3; + __time_t shm_ctime; /* time of last change by shmctl() */ +#else +# error endian order not defined +#endif + __pid_t shm_cpid; /* pid of creator */ + __pid_t shm_lpid; /* pid of last shmop */ + shmatt_t shm_nattch; /* number of current attaches */ + unsigned long int __unused4; + unsigned long int __unused5; + }; + +#ifdef __USE_MISC + +/* ipcs ctl commands */ +# define SHM_STAT 13 +# define SHM_INFO 14 + +/* shm_mode upper byte flags */ +# define SHM_DEST 01000 /* segment will be destroyed on last detach */ +# define SHM_LOCKED 02000 /* segment will not be swapped */ +# define SHM_HUGETLB 04000 /* segment is mapped via hugetlb */ +# define SHM_NORESERVE 010000 /* don't check for reservations */ + +struct shminfo + { + unsigned long int shmmax; + unsigned long int shmmin; + unsigned long int shmmni; + unsigned long int shmseg; + unsigned long int shmall; + unsigned long int __unused1; + unsigned long int __unused2; + unsigned long int __unused3; + unsigned long int __unused4; + }; + +struct shm_info + { + int used_ids; + unsigned long int shm_tot; /* total allocated shm */ + unsigned long int shm_rss; /* total resident shm */ + unsigned long int shm_swp; /* total swapped shm */ + unsigned long int swap_attempts; + unsigned long int swap_successes; + }; + +#endif /* __USE_MISC */ + +__END_DECLS -- cgit v1.2.3