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/*-
* Copyright (c) 1999, 2000 John D. Polstra.
* Copyright (c) 2014 the FreeBSD Foundation
* All rights reserved.
*
* Portions of this software were developed by Andrew Turner
* under sponsorship from the FreeBSD Foundation.
*
* 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 AND CONTRIBUTORS ``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 OR CONTRIBUTORS 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.
*/
#ifndef RTLD_MACHDEP_H
#define RTLD_MACHDEP_H 1
#include <sys/types.h>
#include <machine/atomic.h>
#include <machine/tls.h>
struct Struct_Obj_Entry;
/* Return the address of the .dynamic section in the dynamic linker. */
#define rtld_dynamic(obj) \
({ \
Elf_Addr _dynamic_addr; \
asm volatile("adr %0, _DYNAMIC" : "=&r"(_dynamic_addr)); \
(const Elf_Dyn *)_dynamic_addr; \
})
bool arch_digest_note(struct Struct_Obj_Entry *obj, const Elf_Note *note);
Elf_Addr reloc_jmpslot(Elf_Addr *where, Elf_Addr target,
const struct Struct_Obj_Entry *defobj, const struct Struct_Obj_Entry *obj,
const Elf_Rel *rel);
#define make_function_pointer(def, defobj) \
((defobj)->relocbase + (def)->st_value)
#define call_initfini_pointer(obj, target) \
(((InitFunc)(target))())
#define call_init_pointer(obj, target) \
(((InitArrFunc)(target))(main_argc, main_argv, environ))
/*
* Pass zeros into the ifunc resolver so we can change them later. The first
* 8 arguments on arm64 are passed in registers so make them known values
* if we decide to use them later. Because of this ifunc resolvers can assume
* no arguments are passed in, and if this changes later will be able to
* compare the argument with 0 to see if it is set.
*/
#define call_ifunc_resolver(ptr) \
(((Elf_Addr (*)(uint64_t, uint64_t, uint64_t, uint64_t, uint64_t, \
uint64_t, uint64_t, uint64_t))ptr)(0, 0, 0, 0, 0, 0, 0, 0))
#define round(size, align) \
(((size) + (align) - 1) & ~((align) - 1))
#define calculate_first_tls_offset(size, align, offset) \
round(16, align)
#define calculate_tls_offset(prev_offset, prev_size, size, align, offset) \
round(prev_offset + prev_size, align)
#define calculate_tls_post_size(align) \
round(TLS_TCB_SIZE, align) - TLS_TCB_SIZE
typedef struct {
unsigned long ti_module;
unsigned long ti_offset;
} tls_index;
extern void *__tls_get_addr(tls_index *ti);
#define md_abi_variant_hook(x)
#endif
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