6d5d786f80
implementation in case default one provided by rtld is not suitable. Consolidate various identical MD lock implementation into a single file using appropriate machine/atomic.h. Approved by: re (scottl)
62 lines
2.2 KiB
C
62 lines
2.2 KiB
C
/*-
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* Copyright (c) 1999, 2000 John D. Polstra.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#ifndef RTLD_MACHDEP_H
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#define RTLD_MACHDEP_H 1
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#include <sys/types.h>
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#include <machine/atomic.h>
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#define CACHE_LINE_SIZE 32
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struct Struct_Obj_Entry;
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/* Return the address of the .dynamic section in the dynamic linker. */
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#define rtld_dynamic(obj) \
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((const Elf_Dyn *)((obj)->relocbase + (Elf_Addr)&_DYNAMIC))
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/* Fixup the jump slot at "where" to transfer control to "target". */
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static inline Elf_Addr
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reloc_jmpslot(Elf_Addr *where, Elf_Addr target,
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const struct Struct_Obj_Entry *obj,
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const struct Struct_Obj_Entry *refobj, const Elf_Rel *rel)
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{
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dbg("reloc_jmpslot: *%p = %p", (void *)(where),
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(void *)(target));
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(*(Elf_Addr *)(where) = (Elf_Addr)(target));
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return target;
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}
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#define make_function_pointer(def, defobj) \
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((defobj)->relocbase + (def)->st_value)
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#define call_initfini_pointer(obj, target) \
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(((InitFunc)(target))())
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#endif
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