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glibc/sysdeps/hppa/dl-lookupcfg.h
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/* Configuration of lookup functions. | |
Copyright (C) 2000-2016 Free Software Foundation, Inc. | |
This file is part of the GNU C Library. | |
The GNU C Library is free software; you can redistribute it and/or | |
modify it under the terms of the GNU Lesser General Public | |
License as published by the Free Software Foundation; either | |
version 2.1 of the License, or (at your option) any later version. | |
The GNU C Library is distributed in the hope that it will be useful, | |
but WITHOUT ANY WARRANTY; without even the implied warranty of | |
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
Lesser General Public License for more details. | |
You should have received a copy of the GNU Lesser General Public | |
License along with the GNU C Library. If not, see | |
<http://www.gnu.org/licenses/>. */ | |
#define ELF_FUNCTION_PTR_IS_SPECIAL | |
#define DL_UNMAP_IS_SPECIAL | |
#include <dl-fptr.h> | |
/* Forward declaration. */ | |
struct link_map; | |
void *_dl_symbol_address (struct link_map *map, const ElfW(Sym) *ref); | |
rtld_hidden_proto (_dl_symbol_address) | |
#define DL_SYMBOL_ADDRESS(map, ref) _dl_symbol_address(map, ref) | |
Elf32_Addr _dl_lookup_address (const void *address); | |
#define DL_LOOKUP_ADDRESS(addr) _dl_lookup_address ((const void *) addr) | |
void attribute_hidden _dl_unmap (struct link_map *map); | |
#define DL_UNMAP(map) _dl_unmap (map) | |
#define DL_DT_FUNCTION_ADDRESS(map, start, attr, addr) \ | |
attr volatile unsigned int fptr[2]; \ | |
/* The test for "start & 2" below is to accommodate old binaries which \ | |
violated the ELF ABI by pointing DT_INIT and DT_FINI at a function \ | |
descriptor. */ \ | |
if ((ElfW(Addr)) (start) & 2) \ | |
addr = (ElfW(Addr)) start; \ | |
else \ | |
{ \ | |
fptr[0] = (unsigned int) (start); \ | |
fptr[1] = (map)->l_info[DT_PLTGOT]->d_un.d_ptr; \ | |
/* Set bit 30 to indicate to $$dyncall that this is a PLABEL. */ \ | |
addr = (ElfW(Addr))((unsigned int)fptr | 2); \ | |
} \ | |
#define DL_CALL_DT_INIT(map, start, argc, argv, env) \ | |
{ \ | |
ElfW(Addr) addr; \ | |
DL_DT_FUNCTION_ADDRESS(map, start, , addr) \ | |
init_t init = (init_t) addr; \ | |
init (argc, argv, env); \ | |
} | |
#define DL_CALL_DT_FINI(map, start) \ | |
{ \ | |
ElfW(Addr) addr; \ | |
DL_DT_FUNCTION_ADDRESS(map, start, , addr) \ | |
fini_t fini = (fini_t) addr; \ | |
fini (); \ | |
} | |
/* The type of the return value of fixup/profile_fixup */ | |
#define DL_FIXUP_VALUE_TYPE struct fdesc | |
/* Construct a fixup value from the address and linkmap */ | |
#define DL_FIXUP_MAKE_VALUE(map, addr) \ | |
((struct fdesc) { (addr), (map)->l_info[DT_PLTGOT]->d_un.d_ptr }) | |
/* Extract the code address from a fixup value */ | |
#define DL_FIXUP_VALUE_CODE_ADDR(value) ((value).ip) | |
#define DL_FIXUP_VALUE_ADDR(value) ((uintptr_t) &(value)) | |
#define DL_FIXUP_ADDR_VALUE(addr) (*(struct fdesc *) (addr)) |