headers/bsd: Rewrite link_elf.h.

Include only the APIs we are (shortly) going to actually support.

The other structures and functions declared in this file were
never supported nor used anywhere in Haiku's tree.
This commit is contained in:
Augustin Cavalier 2022-06-28 13:04:52 -04:00
parent c5702ad4e8
commit 045f7a5f3a

View File

@ -1,47 +1,12 @@
/*-
* SPDX-License-Identifier: BSD-4-Clause
*
* Copyright (c) 1993 Paul Kranenburg
* 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.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Paul Kranenburg.
* 4. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission
*
* 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.
*
* $FreeBSD$
*/
/*
* RRS section definitions.
*
* The layout of some data structures defined in this header file is
* such that we can provide compatibility with the SunOS 4.x shared
* library scheme.
* Copyright 2022, Haiku, Inc. All rights reserved.
* Distributed under the terms of the MIT License.
*/
#ifndef _BSD_SYS_LINK_ELF_H_
#define _BSD_SYS_LINK_ELF_H_
#ifndef _SYS_LINK_ELF_H_
#define _SYS_LINK_ELF_H_
#include <features.h>
#ifdef _DEFAULT_SOURCE
@ -49,69 +14,28 @@
#include <os/kernel/elf.h>
/*
* Flags that describe the origin of the entries in Dl_serinfo.
* SunOS has these in <sys/link.h>, we follow the suit.
*/
#define LA_SER_ORIG 0x01 /* original (needed) name */
#define LA_SER_LIBPATH 0x02 /* LD_LIBRARY_PATH entry prepended */
#define LA_SER_RUNPATH 0x04 /* runpath entry prepended */
#define LA_SER_CONFIG 0x08 /* configuration entry prepended */
#define LA_SER_DEFAULT 0x40 /* default path prepended */
#define LA_SER_SECURE 0x80 /* default (secure) path prepended */
typedef struct link_map {
caddr_t l_addr; /* Base Address of library */
#ifdef __mips__
caddr_t l_offs; /* Load Offset of library */
struct dl_phdr_info {
Elf_Addr dlpi_addr;
const char *dlpi_name;
const Elf_Phdr *dlpi_phdr;
Elf_Half dlpi_phnum;
};
#ifdef __cplusplus
extern "C" {
#endif
const char *l_name; /* Absolute Path to Library */
const void *l_ld; /* Pointer to .dynamic in memory */
struct link_map *l_next, *l_prev; /* linked list of of mapped libs */
} Link_map;
struct r_debug {
int r_version; /* not used */
struct link_map *r_map; /* list of loaded images */
void (*r_brk)(struct r_debug *, struct link_map *);
/* pointer to break point */
enum {
RT_CONSISTENT, /* things are stable */
RT_ADD, /* adding a shared library */
RT_DELETE /* removing a shared library */
} r_state;
};
struct dl_phdr_info
{
Elf_Addr dlpi_addr; /* module relocation base */
const char *dlpi_name; /* module name */
const Elf_Phdr *dlpi_phdr; /* pointer to module's phdr */
Elf_Half dlpi_phnum; /* number of entries in phdr */
unsigned long long int dlpi_adds; /* total # of loads */
unsigned long long int dlpi_subs; /* total # of unloads */
size_t dlpi_tls_modid;
void *dlpi_tls_data;
};
#include <sys/cdefs.h>
__BEGIN_DECLS
typedef int (*__dl_iterate_hdr_callback)(struct dl_phdr_info *, size_t, void *);
extern int dl_iterate_phdr(__dl_iterate_hdr_callback, void *);
int _rtld_addr_phdr(const void *, struct dl_phdr_info *);
int _rtld_get_stack_prot(void);
int _rtld_is_dlopened(void *);
#ifdef __ARM_EABI__
void * dl_unwind_find_exidx(const void *, int *);
#ifdef __cplusplus
}
#endif
__END_DECLS
#endif
#endif /* _SYS_LINK_ELF_H_ */
#endif /* _BSD_SYS_LINK_ELF_H_ */