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Diffstat (limited to 'sysdeps/generic/dl-machine.h')
| -rw-r--r-- | sysdeps/generic/dl-machine.h | 133 |
1 files changed, 0 insertions, 133 deletions
diff --git a/sysdeps/generic/dl-machine.h b/sysdeps/generic/dl-machine.h deleted file mode 100644 index 59749bd84f..0000000000 --- a/sysdeps/generic/dl-machine.h +++ /dev/null @@ -1,133 +0,0 @@ -/* Machine-dependent ELF dynamic relocation inline functions. Stub version. - Copyright (C) 1995-2017 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_MACHINE_NAME "stub" - -#include <string.h> -#include <link.h> - - -/* Return nonzero iff ELF header is compatible with the running host. */ -static inline int -elf_machine_matches_host (const Elf32_Ehdr *ehdr) -{ - switch (ehdr->e_machine) - { - default: - return 0; - } -} - - -/* Return the link-time address of _DYNAMIC. */ -static inline Elf32_Addr -elf_machine_dynamic (void) -{ -#error "Damn, no _DYNAMIC" -} - - -/* Return the run-time load address of the shared object. */ -static inline Elf32_Addr -elf_machine_load_address (void) -{ -#error "Where am I?" -} - -/* Fixup a PLT entry to bounce directly to the function at VALUE. */ - -static inline Elf32_Addr -elf_machine_fixup_plt (struct link_map *map, lookup_t t, - const Elf32_Rel *reloc, - Elf32_Addr *reloc_addr, Elf32_Addr value) -{ - return *reloc_addr = value; -} - -/* Perform the relocation specified by RELOC and SYM (which is fully resolved). - LOADADDR is the load address of the object; INFO is an array indexed - by DT_* of the .dynamic section info. */ - -auto inline void -__attribute__ ((always_inline)) -elf_machine_rel (Elf32_Addr loadaddr, Elf32_Dyn *info[DT_NUM], - const Elf32_Rel *reloc, const Elf32_Sym *sym, - Elf32_Addr (*resolve) (const Elf32_Sym **ref, - Elf32_Addr reloc_addr, - int noplt)) -{ - Elf32_Addr *const reloc_addr = (Elf32_Addr *) reloc->r_offset; - Elf32_Addr loadbase; - - switch (ELF32_R_TYPE (reloc->r_info)) - { - case R_MACHINE_COPY: - loadbase = (*resolve) (&sym, (Elf32_Addr) reloc_addr, 0); - memcpy (reloc_addr, (void *) (loadbase + sym->st_value), sym->st_size); - break; - default: - _dl_reloc_bad_type (map, ELF32_R_TYPE (reloc->r_info), 0); - break; - } -} - - -auto inline Elf32_Addr -__attribute__ ((always_inline)) -elf_machine_rela (Elf32_Addr loadaddr, Elf32_Dyn *info[DT_NUM], - const Elf32_Rel *reloc, const Elf32_Sym *sym, - Elf32_Addr (*resolve) (const Elf32_Sym **ref, - Elf32_Addr reloc_addr, - int noplt)) -{ - _dl_signal_error (0, "Elf32_Rela relocation requested -- unused on " - NULL, ELF_MACHINE_NAME); -} - - -/* Set up the loaded object described by L so its unrelocated PLT - entries will jump to the on-demand fixup code in dl-runtime.c. */ - -static inline int -elf_machine_runtime_setup (struct link_map *l, int lazy) -{ - extern void _dl_runtime_resolve (Elf32_Word); - - if (lazy) - { - /* The GOT entries for functions in the PLT have not yet been filled - in. Their initial contents will arrange when called to push an - offset into the .rel.plt section, push _GLOBAL_OFFSET_TABLE_[1], - and then jump to _GLOBAL_OFFSET_TABLE[2]. */ - Elf32_Addr *got = (Elf32_Addr *) D_PTR (l, l_info[DT_PLTGOT]); - got[1] = (Elf32_Addr) l; /* Identify this shared object. */ - - /* This function will get called to fix up the GOT entry indicated by - the offset on the stack, and then jump to the resolved address. */ - got[2] = (Elf32_Addr) &_dl_runtime_resolve; - } - - return lazy; -} - - -/* Initial entry point code for the dynamic linker. - The C function `_dl_start' is the real entry point; - its return value is the user program's entry point. */ - -#define RTLD_START #error need some startup code |