7fb37371e8
Fix warnings about redundant declarations in rtld when libthr in increased to WARNS=6. Reviewed by: kib MFC after: 3 days Sponsored by: Dell EMC Differential Revision: https://reviews.freebsd.org/D10934
110 lines
3.8 KiB
C
110 lines
3.8 KiB
C
/*-
|
|
* Copyright (c) 1999, 2000 John D. Polstra.
|
|
* Copyright (c) 2015 Ruslan Bukin <br@bsdpad.com>
|
|
* All rights reserved.
|
|
*
|
|
* Portions of this software were developed by SRI International and the
|
|
* University of Cambridge Computer Laboratory under DARPA/AFRL contract
|
|
* FA8750-10-C-0237 ("CTSRD"), as part of the DARPA CRASH research programme.
|
|
*
|
|
* Portions of this software were developed by the University of Cambridge
|
|
* Computer Laboratory as part of the CTSRD Project, with support from the
|
|
* UK Higher Education Innovation Fund (HEIF).
|
|
*
|
|
* 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.
|
|
*
|
|
* $FreeBSD$
|
|
*/
|
|
|
|
#ifndef RTLD_MACHDEP_H
|
|
#define RTLD_MACHDEP_H 1
|
|
|
|
#include <sys/types.h>
|
|
#include <machine/atomic.h>
|
|
|
|
struct Struct_Obj_Entry;
|
|
|
|
uint64_t set_gp(struct Struct_Obj_Entry *obj);
|
|
|
|
/* Return the address of the .dynamic section in the dynamic linker. */
|
|
#define rtld_dynamic(obj) \
|
|
({ \
|
|
Elf_Addr _dynamic_addr; \
|
|
__asm __volatile("lla %0, _DYNAMIC" : "=r"(_dynamic_addr)); \
|
|
(const Elf_Dyn *)_dynamic_addr; \
|
|
})
|
|
|
|
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) \
|
|
({ \
|
|
uint64_t old0; \
|
|
old0 = set_gp(obj); \
|
|
(((InitFunc)(target))()); \
|
|
__asm __volatile("mv gp, %0" :: "r"(old0)); \
|
|
})
|
|
|
|
#define call_init_pointer(obj, target) \
|
|
({ \
|
|
uint64_t old1; \
|
|
old1 = set_gp(obj); \
|
|
(((InitArrFunc)(target))(main_argc, main_argv, environ)); \
|
|
__asm __volatile("mv gp, %0" :: "r"(old1)); \
|
|
})
|
|
|
|
#define call_ifunc_resolver(ptr) \
|
|
(((Elf_Addr (*)(void))ptr)())
|
|
|
|
/*
|
|
* TLS
|
|
*/
|
|
#define TLS_TP_OFFSET 0x0
|
|
#define TLS_DTV_OFFSET 0x800
|
|
#define TLS_TCB_SIZE 16
|
|
|
|
#define round(size, align) \
|
|
(((size) + (align) - 1) & ~((align) - 1))
|
|
#define calculate_first_tls_offset(size, align) \
|
|
round(16, align)
|
|
#define calculate_tls_offset(prev_offset, prev_size, size, align) \
|
|
round(prev_offset + prev_size, align)
|
|
#define calculate_tls_end(off, size) ((off) + (size))
|
|
|
|
typedef struct {
|
|
unsigned long ti_module;
|
|
unsigned long ti_offset;
|
|
} tls_index;
|
|
|
|
extern void *__tls_get_addr(tls_index* ti);
|
|
|
|
#define RTLD_DEFAULT_STACK_PF_EXEC PF_X
|
|
#define RTLD_DEFAULT_STACK_EXEC PROT_EXEC
|
|
|
|
#define md_abi_variant_hook(x)
|
|
|
|
#endif
|