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author | Roland McGrath <roland@gnu.org> | 1996-07-14 11:39:25 +0000 |
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committer | Roland McGrath <roland@gnu.org> | 1996-07-14 11:39:25 +0000 |
commit | f51d1dfd35f793488ee32c8226cb8955ed75acbe (patch) | |
tree | 0a157b3355be9569bd6217a20218e2fedd6f42d7 /elf | |
parent | c928de790200bc7a81224377d35a91a6103387de (diff) | |
download | glibc-f51d1dfd35f793488ee32c8226cb8955ed75acbe.zip glibc-f51d1dfd35f793488ee32c8226cb8955ed75acbe.tar.gz glibc-f51d1dfd35f793488ee32c8226cb8955ed75acbe.tar.bz2 |
* elf/dl-reloc.c: Include "dynamic-link.h" at file scope.
* elf/rtld.c: Include <string.h>.
* elf/dynamic-link.h (ELF_DYNAMIC_DO_REL, ELF_DYNAMIC_DO_RELA,
ELF_DYNAMIC_RELOCATE): No longer take RESOLVE argument.
Conditionalize defns on [RESOLVE].
* elf/do-rel.h (elf_dynamic_do_rel): Likewise.
* sysdeps/i386/dl-machine.h (elf_machine_rel): Likewise.
Instead use RESOLVE macro with same args.
(elf_machine_rel): Conditionalize defn on [RESOLVE].
* elf/dl-reloc.c (RESOLVE): New macro, define before including
"dynamic-link.h". It replaces `resolve' local function.
* elf/dl-runtime.c: Likewise.
* elf/rtld.c: Likewise.
Diffstat (limited to 'elf')
-rw-r--r-- | elf/dl-reloc.c | 16 | ||||
-rw-r--r-- | elf/dl-runtime.c | 21 | ||||
-rw-r--r-- | elf/do-rel.h | 12 | ||||
-rw-r--r-- | elf/dynamic-link.h | 26 | ||||
-rw-r--r-- | elf/rtld.c | 4 |
5 files changed, 41 insertions, 38 deletions
diff --git a/elf/dl-reloc.c b/elf/dl-reloc.c index e6778e7..5adf0f6 100644 --- a/elf/dl-reloc.c +++ b/elf/dl-reloc.c @@ -24,7 +24,6 @@ Cambridge, MA 02139, USA. */ #include <errno.h> #include "dynamic-link.h" - void _dl_relocate_object (struct link_map *l, struct link_map *scope[], int lazy) { @@ -56,15 +55,14 @@ _dl_relocate_object (struct link_map *l, struct link_map *scope[], int lazy) const char *strtab /* String table object symbols. */ = ((void *) l->l_addr + l->l_info[DT_STRTAB]->d_un.d_ptr); - ElfW(Addr) resolve (const ElfW(Sym) **ref, - ElfW(Addr) reloc_addr, int noplt) - { - /* Look up the referenced symbol in the specified scope. */ - return _dl_lookup_symbol (strtab + (*ref)->st_name, ref, scope, - l->l_name, reloc_addr, noplt); - } - ELF_DYNAMIC_RELOCATE (l, lazy, resolve); + /* This macro is used as a callback from the ELF_DYNAMIC_RELOCATE code. */ +#define RESOLVE(ref, reloc_addr, noplt) \ + (_dl_lookup_symbol (strtab + (*ref)->st_name, ref, scope, \ + l->l_name, reloc_addr, noplt)) + +#include "dynamic-link.h" + ELF_DYNAMIC_RELOCATE (l, lazy); } /* Set up the PLT so its unrelocated entries will jump to diff --git a/elf/dl-runtime.c b/elf/dl-runtime.c index cdacd75..2785592 100644 --- a/elf/dl-runtime.c +++ b/elf/dl-runtime.c @@ -18,7 +18,6 @@ not, write to the Free Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ #include <link.h> -#include "dynamic-link.h" /* The global scope we will use for symbol lookups. @@ -68,6 +67,8 @@ _dl_object_relocation_scope (struct link_map *l) } } +#include "dynamic-link.h" + /* Figure out the right type, Rel or Rela. */ #define elf_machine_rel 1 #define elf_machine_rela 2 @@ -118,14 +119,16 @@ fixup ( /* Set up the scope to find symbols referenced by this object. */ struct link_map **scope = _dl_object_relocation_scope (l); - /* Perform the specified relocation. */ - ElfW(Addr) resolve (const ElfW(Sym) **ref, - ElfW(Addr) reloc_addr, int noplt) - { - return _dl_lookup_symbol (strtab + (*ref)->st_name, ref, - scope, l->l_name, reloc_addr, noplt); - } - elf_machine_relplt (l, reloc, &symtab[ELFW(R_SYM) (reloc->r_info)], resolve); + { + /* This macro is used as a callback from the elf_machine_relplt code. */ +#define RESOLVE(ref, reloc_addr, noplt) \ + (_dl_lookup_symbol (strtab + (*ref)->st_name, ref, scope, \ + l->l_name, reloc_addr, noplt)) +#include "dynamic-link.h" + + /* Perform the specified relocation. */ + elf_machine_relplt (l, reloc, &symtab[ELFW(R_SYM) (reloc->r_info)]); + } *_dl_global_scope_end = NULL; diff --git a/elf/do-rel.h b/elf/do-rel.h index ebf2e84..25da592 100644 --- a/elf/do-rel.h +++ b/elf/do-rel.h @@ -28,17 +28,13 @@ Cambridge, MA 02139, USA. */ /* Perform the relocations in MAP on the running program image as specified - by RELTAG, SZTAG. *RESOLVE is called to resolve symbol values; it - modifies its argument pointer to point to the defining symbol, and - returns the base load address of the defining object. If LAZY is - nonzero, this is the first pass on PLT relocations; they should be set - up to call _dl_runtime_resolve, rather than fully resolved now. */ + by RELTAG, SZTAG. If LAZY is nonzero, this is the first pass on PLT + relocations; they should be set up to call _dl_runtime_resolve, rather + than fully resolved now. */ static inline void elf_dynamic_do_rel (struct link_map *map, int reltag, int sztag, - ElfW(Addr) (*resolve) (const ElfW(Sym) **symbol, - ElfW(Addr) reloc_addr, int noplt), int lazy) { const ElfW(Sym) *const symtab @@ -53,7 +49,7 @@ elf_dynamic_do_rel (struct link_map *map, elf_machine_lazy_rel (map, r); else for (; r < end; ++r) - elf_machine_rel (map, r, &symtab[ELFW(R_SYM) (r->r_info)], resolve); + elf_machine_rel (map, r, &symtab[ELFW(R_SYM) (r->r_info)]); } #undef elf_dynamic_do_rel diff --git a/elf/dynamic-link.h b/elf/dynamic-link.h index b69cb3f..45b6b2d 100644 --- a/elf/dynamic-link.h +++ b/elf/dynamic-link.h @@ -56,6 +56,8 @@ elf_get_dynamic_info (ElfW(Dyn) *dyn, ElfW(Dyn) *info[DT_NUM + DT_PROCNUM]) info[DT_PLTREL]->d_un.d_val == DT_RELA); } +#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 @@ -63,31 +65,33 @@ elf_get_dynamic_info (ElfW(Dyn) *dyn, ElfW(Dyn) *info[DT_NUM + DT_PROCNUM]) #if ! ELF_MACHINE_NO_REL #include "do-rel.h" -#define ELF_DYNAMIC_DO_REL(map, lazy, resolve) \ +#define ELF_DYNAMIC_DO_REL(map, lazy) \ if ((map)->l_info[DT_REL]) \ - elf_dynamic_do_rel ((map), DT_REL, DT_RELSZ, (resolve), 0); \ + elf_dynamic_do_rel ((map), DT_REL, DT_RELSZ, 0); \ if ((map)->l_info[DT_PLTREL] && \ (map)->l_info[DT_PLTREL]->d_un.d_val == DT_REL) \ - elf_dynamic_do_rel ((map), DT_JMPREL, DT_PLTRELSZ, (resolve), (lazy)); + elf_dynamic_do_rel ((map), DT_JMPREL, DT_PLTRELSZ, (lazy)); #else -#define ELF_DYNAMIC_DO_REL(map, lazy, resolve) /* Nothing to do. */ +#define ELF_DYNAMIC_DO_REL(map, lazy) /* Nothing to do. */ #endif #if ! ELF_MACHINE_NO_RELA #define DO_RELA #include "do-rel.h" -#define ELF_DYNAMIC_DO_RELA(map, lazy, resolve) \ +#define ELF_DYNAMIC_DO_RELA(map, lazy) \ if ((map)->l_info[DT_RELA]) \ - elf_dynamic_do_rela ((map), DT_RELA, DT_RELASZ, (resolve), 0); \ + elf_dynamic_do_rela ((map), DT_RELA, DT_RELASZ, 0); \ if ((map)->l_info[DT_PLTREL] && \ (map)->l_info[DT_PLTREL]->d_un.d_val == DT_RELA) \ - elf_dynamic_do_rela ((map), DT_JMPREL, DT_PLTRELSZ, (resolve), (lazy)); + elf_dynamic_do_rela ((map), DT_JMPREL, DT_PLTRELSZ, (lazy)); #else -#define ELF_DYNAMIC_DO_RELA(map, lazy, resolve) /* Nothing to do. */ +#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, resolve) \ - do { ELF_DYNAMIC_DO_REL ((map), (lazy), (resolve)); \ - ELF_DYNAMIC_DO_RELA ((map), (lazy), (resolve)); } while (0) +#define ELF_DYNAMIC_RELOCATE(map, lazy) \ + do { ELF_DYNAMIC_DO_REL ((map), (lazy)); \ + ELF_DYNAMIC_DO_RELA ((map), (lazy)); } while (0) + +#endif @@ -20,6 +20,7 @@ Cambridge, MA 02139, USA. */ #include <link.h> #include <stddef.h> #include <stdlib.h> +#include <string.h> #include <unistd.h> #include <sys/mman.h> /* Check if MAP_ANON is defined. */ #include "../stdio-common/_itoa.h" @@ -28,6 +29,7 @@ Cambridge, MA 02139, USA. */ /* This #define produces dynamic linking inline functions for bootstrap relocation instead of general-purpose relocation. */ #define RTLD_BOOTSTRAP +#define RESOLVE(sym, reloc_addr, noplt) 0 #include "dynamic-link.h" @@ -79,7 +81,7 @@ _dl_start (void *arg) /* Relocate ourselves so we can do normal function calls and data access using the global offset table. */ - ELF_DYNAMIC_RELOCATE (&bootstrap_map, 0, NULL); + ELF_DYNAMIC_RELOCATE (&bootstrap_map, 0); /* Now life is sane; we can call functions and access global data. |