mirror of
https://git.FreeBSD.org/src.git
synced 2024-12-17 10:26:15 +00:00
0c4f9ecde3
rtld on x86 to be hidden. This is a micro-optimization, which allows intrinsic references inside rtld to be handled without indirection through PLT. The visibility of rtld symbols for other objects in the symbol namespace is controlled by a version script. Reviewed by: kan, jilles Sponsored by: The FreeBSD Foundation MFC after: 2 weeks
76 lines
2.5 KiB
C
76 lines
2.5 KiB
C
/*-
|
|
* Copyright 2003 Alexander Kabaev.
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
|
|
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
|
|
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
|
|
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
|
|
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
|
|
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
|
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
|
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
|
|
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
*
|
|
* $FreeBSD$
|
|
*/
|
|
|
|
#ifndef _RTLD_LOCK_H_
|
|
#define _RTLD_LOCK_H_
|
|
|
|
#define RTLI_VERSION 0x01
|
|
#define MAX_RTLD_LOCKS 8
|
|
|
|
struct RtldLockInfo
|
|
{
|
|
unsigned int rtli_version;
|
|
void *(*lock_create)(void);
|
|
void (*lock_destroy)(void *);
|
|
void (*rlock_acquire)(void *);
|
|
void (*wlock_acquire)(void *);
|
|
void (*lock_release)(void *);
|
|
int (*thread_set_flag)(int);
|
|
int (*thread_clr_flag)(int);
|
|
void (*at_fork)(void);
|
|
};
|
|
|
|
extern void _rtld_thread_init(struct RtldLockInfo *) __exported;
|
|
extern void _rtld_atfork_pre(int *) __exported;
|
|
extern void _rtld_atfork_post(int *) __exported;
|
|
|
|
#ifdef IN_RTLD
|
|
|
|
struct rtld_lock;
|
|
typedef struct rtld_lock *rtld_lock_t;
|
|
|
|
extern rtld_lock_t rtld_bind_lock;
|
|
extern rtld_lock_t rtld_libc_lock;
|
|
extern rtld_lock_t rtld_phdr_lock;
|
|
|
|
#define RTLD_LOCK_UNLOCKED 0
|
|
#define RTLD_LOCK_RLOCKED 1
|
|
#define RTLD_LOCK_WLOCKED 2
|
|
|
|
struct Struct_RtldLockState;
|
|
typedef struct Struct_RtldLockState RtldLockState;
|
|
|
|
void rlock_acquire(rtld_lock_t, RtldLockState *);
|
|
void wlock_acquire(rtld_lock_t, RtldLockState *);
|
|
void lock_release(rtld_lock_t, RtldLockState *);
|
|
void lock_upgrade(rtld_lock_t, RtldLockState *);
|
|
void lock_restart_for_upgrade(RtldLockState *);
|
|
|
|
#endif /* IN_RTLD */
|
|
|
|
#endif
|