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Diffstat (limited to 'newlib/libc/sys/linux/dl/dynamic-link.h')
-rw-r--r--newlib/libc/sys/linux/dl/dynamic-link.h257
1 files changed, 0 insertions, 257 deletions
diff --git a/newlib/libc/sys/linux/dl/dynamic-link.h b/newlib/libc/sys/linux/dl/dynamic-link.h
deleted file mode 100644
index c1709f7c6..000000000
--- a/newlib/libc/sys/linux/dl/dynamic-link.h
+++ /dev/null
@@ -1,257 +0,0 @@
-/* Inline functions for dynamic linking.
- Copyright (C) 1995,96,97,98,99,2000 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, write to the Free
- Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
- 02111-1307 USA. */
-
-#ifndef __DYNAMIC_LINK_H__
-#define __DYNAMIC_LINK_H__
-
-#include <elf.h>
-#include <machine/dl-machine.h>
-#include <assert.h>
-
-#ifndef VERSYMIDX
-# define VERSYMIDX(sym) (DT_NUM + DT_THISPROCNUM + DT_VERSIONTAGIDX (sym))
-#endif
-
-
-/* Global read-only variable defined in rtld.c which is nonzero if we
- shall give more warning messages. */
-extern int _dl_verbose __attribute__ ((unused));
-
-
-/* Read the dynamic section at DYN and fill in INFO with indices DT_*. */
-
-static void __attribute__ ((unused))
-elf_get_dynamic_info (struct link_map *l)
-{
- ElfW(Dyn) *dyn = l->l_ld;
- ElfW(Addr) l_addr;
- ElfW(Dyn) **info;
-
- if (! dyn)
- return;
-
- l_addr = l->l_addr;
- info = l->l_info;
-
- while (dyn->d_tag != DT_NULL)
- {
- if (dyn->d_tag < DT_NUM)
- info[dyn->d_tag] = dyn;
- else if (dyn->d_tag >= DT_LOPROC &&
- dyn->d_tag < DT_LOPROC + DT_THISPROCNUM)
- info[dyn->d_tag - DT_LOPROC + DT_NUM] = dyn;
- else if ((Elf32_Word) DT_VERSIONTAGIDX (dyn->d_tag) < DT_VERSIONTAGNUM)
- info[VERSYMIDX (dyn->d_tag)] = dyn;
- else if ((Elf32_Word) DT_EXTRATAGIDX (dyn->d_tag) < DT_EXTRANUM)
- info[DT_EXTRATAGIDX (dyn->d_tag) + DT_NUM + DT_THISPROCNUM
- + DT_VERSIONTAGNUM] = dyn;
- else
- assert (! "bad dynamic tag");
- ++dyn;
- }
-#ifndef DL_RO_DYN_SECTION
- if (info[DT_PLTGOT] != NULL)
- info[DT_PLTGOT]->d_un.d_ptr += l_addr;
- if (info[DT_STRTAB] != NULL)
- info[DT_STRTAB]->d_un.d_ptr += l_addr;
- if (info[DT_SYMTAB] != NULL)
- info[DT_SYMTAB]->d_un.d_ptr += l_addr;
-# if ! ELF_MACHINE_NO_RELA
- if (info[DT_RELA] != NULL)
- {
- assert (info[DT_RELAENT]->d_un.d_val == sizeof (ElfW(Rela)));
- info[DT_RELA]->d_un.d_ptr += l_addr;
- }
-# endif
-# if ! ELF_MACHINE_NO_REL
- if (info[DT_REL] != NULL)
- {
- assert (info[DT_RELENT]->d_un.d_val == sizeof (ElfW(Rel)));
- info[DT_REL]->d_un.d_ptr += l_addr;
- }
-# endif
-#endif
- if (info[DT_PLTREL] != NULL)
- {
-# if ELF_MACHINE_NO_RELA
- assert (info[DT_PLTREL]->d_un.d_val == DT_REL);
-# elif ELF_MACHINE_NO_REL
- assert (info[DT_PLTREL]->d_un.d_val == DT_RELA);
-# else
- assert (info[DT_PLTREL]->d_un.d_val == DT_REL
- || info[DT_PLTREL]->d_un.d_val == DT_RELA);
-# endif
- }
-#ifndef DL_RO_DYN_SECTION
- if (info[DT_JMPREL] != NULL)
- info[DT_JMPREL]->d_un.d_ptr += l_addr;
- if (info[VERSYMIDX (DT_VERSYM)] != NULL)
- info[VERSYMIDX (DT_VERSYM)]->d_un.d_ptr += l_addr;
-#endif
- if (info[DT_FLAGS] != NULL)
- {
- /* Flags are used. Translate to the old form where available.
- Since these l_info entries are only tested for NULL pointers it
- is ok if they point to the DT_FLAGS entry. */
- ElfW(Word) flags = info[DT_FLAGS]->d_un.d_val;
- if (flags & DF_SYMBOLIC)
- info[DT_SYMBOLIC] = info[DT_FLAGS];
- if (flags & DF_TEXTREL)
- info[DT_TEXTREL] = info[DT_FLAGS];
- if (flags & DF_BIND_NOW)
- info[DT_BIND_NOW] = info[DT_FLAGS];
- }
- if (info[VERSYMIDX (DT_FLAGS_1)] != NULL)
- l->l_flags_1 = info[VERSYMIDX (DT_FLAGS_1)]->d_un.d_val;
- if (info[DT_RUNPATH] != NULL)
- /* If both RUNPATH and RPATH are given, the latter is ignored. */
- info[DT_RPATH] = NULL;
-}
-
-# if ! ELF_MACHINE_NO_REL
-# include "do-rel.h"
-# endif
-
-# if ! ELF_MACHINE_NO_RELA
-# define DO_RELA
-# include "do-rel.h"
-# endif
-
-#endif /* __DYNAMIC_LINK_H__ */
-
-#ifdef RESOLVE
-
-/* Get the definitions of `elf_dynamic_do_rel' and `elf_dynamic_do_rela'.
- These functions are almost identical, so we use cpp magic to avoid
- duplicating their code. It cannot be done in a more general function
- because we must be able to completely inline. */
-
-/* On some machines, notably SPARC, DT_REL* includes DT_JMPREL in its
- range. Note that according to the ELF spec, this is completely legal!
- But conditionally define things so that on machines we know this will
- not happen we do something more optimal. */
-
-# ifdef ELF_MACHINE_PLTREL_OVERLAP
-# define _ELF_DYNAMIC_DO_RELOC(RELOC, reloc, map, do_lazy, test_rel) \
- do { \
- struct { ElfW(Addr) start, size; int lazy; } ranges[3]; \
- int ranges_index; \
- \
- ranges[0].lazy = ranges[2].lazy = 0; \
- ranges[1].lazy = 1; \
- ranges[0].size = ranges[1].size = ranges[2].size = 0; \
- \
- if ((map)->l_info[DT_##RELOC]) \
- { \
- ranges[0].start = D_PTR ((map), l_info[DT_##RELOC]); \
- ranges[0].size = (map)->l_info[DT_##RELOC##SZ]->d_un.d_val; \
- } \
- \
- if ((do_lazy) \
- && (map)->l_info[DT_PLTREL] \
- && (!test_rel || (map)->l_info[DT_PLTREL]->d_un.d_val == DT_##RELOC)) \
- { \
- ranges[1].start = D_PTR ((map), l_info[DT_JMPREL]); \
- ranges[1].size = (map)->l_info[DT_PLTRELSZ]->d_un.d_val; \
- ranges[2].start = ranges[1].start + ranges[1].size; \
- ranges[2].size = ranges[0].start + ranges[0].size - ranges[2].start; \
- ranges[0].size = ranges[1].start - ranges[0].start; \
- } \
- \
- for (ranges_index = 0; ranges_index < 3; ++ranges_index) \
- elf_dynamic_do_##reloc ((map), \
- ranges[ranges_index].start, \
- ranges[ranges_index].size, \
- ranges[ranges_index].lazy, \
- scope); \
- } while (0)
-# else
-# define _ELF_DYNAMIC_DO_RELOC(RELOC, reloc, map, do_lazy, test_rel) \
- do { \
- struct { ElfW(Addr) start, size; int lazy; } ranges[2]; \
- int ranges_index; \
- ranges[0].lazy = 0; \
- ranges[0].size = ranges[1].size = 0; \
- ranges[0].start = 0; \
- \
- if ((map)->l_info[DT_##RELOC]) \
- { \
- ranges[0].start = D_PTR ((map), l_info[DT_##RELOC]); \
- ranges[0].size = (map)->l_info[DT_##RELOC##SZ]->d_un.d_val; \
- } \
- if ((map)->l_info[DT_PLTREL] \
- && (!test_rel || (map)->l_info[DT_PLTREL]->d_un.d_val == DT_##RELOC)) \
- { \
- ElfW(Addr) start = D_PTR ((map), l_info[DT_JMPREL]); \
- \
- if ((do_lazy) \
- /* This test does not only detect whether the relocation \
- sections are in the right order, it also checks whether \
- there is a DT_REL/DT_RELA section. */ \
- || ranges[0].start + ranges[0].size != start) \
- { \
- ranges[1].start = start; \
- ranges[1].size = (map)->l_info[DT_PLTRELSZ]->d_un.d_val; \
- ranges[1].lazy = (do_lazy); \
- } \
- else \
- /* Combine processing the sections. */ \
- ranges[0].size += (map)->l_info[DT_PLTRELSZ]->d_un.d_val; \
- } \
- \
- for (ranges_index = 0; ranges_index < 2; ++ranges_index) \
- elf_dynamic_do_##reloc ((map), \
- ranges[ranges_index].start, \
- ranges[ranges_index].size, \
- ranges[ranges_index].lazy, \
- scope); \
- } while (0)
-# endif
-
-# if ELF_MACHINE_NO_REL || ELF_MACHINE_NO_RELA
-# define _ELF_CHECK_REL 0
-# else
-# define _ELF_CHECK_REL 1
-# endif
-
-# if ! ELF_MACHINE_NO_REL
-# define ELF_DYNAMIC_DO_REL(map, lazy) \
- _ELF_DYNAMIC_DO_RELOC (REL, rel, map, lazy, _ELF_CHECK_REL)
-# else
-# define ELF_DYNAMIC_DO_REL(map, lazy) /* Nothing to do. */
-# endif
-
-# if ! ELF_MACHINE_NO_RELA
-# define ELF_DYNAMIC_DO_RELA(map, lazy) \
- _ELF_DYNAMIC_DO_RELOC (RELA, rela, map, lazy, _ELF_CHECK_REL)
-# else
-# define ELF_DYNAMIC_DO_RELA(map, lazy) /* Nothing to do. */
-# endif
-
-/* This can't just be an inline function because GCC is too dumb
- to inline functions containing inlines themselves. */
-# define ELF_DYNAMIC_RELOCATE(map, lazy, consider_profile) \
- do { \
- int edr_lazy = elf_machine_runtime_setup ((map), (lazy), \
- (consider_profile)); \
- ELF_DYNAMIC_DO_REL ((map), edr_lazy); \
- ELF_DYNAMIC_DO_RELA ((map), edr_lazy); \
- } while (0)
-
-#endif
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