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authorUlrich Drepper <drepper@redhat.com>1999-02-20 15:02:24 +0000
committerUlrich Drepper <drepper@redhat.com>1999-02-20 15:02:24 +0000
commitf420344cefcadede3a6a4827e4a2dbaca9866439 (patch)
treed9f1a9cb2e53d0f593cbe235a9fa8c10dadbc939 /elf/dynamic-link.h
parent24d6084042539edf4ea7bf8dca3acfde8eea1600 (diff)
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Update.
* elf/dynamic-link.h (elf_get_dynamic_info): Take new argument with load address. Relocate d_ptr in DT_DTRTAB, DT_SYMTAB, DT_RELA, DT_REL, DT_JMPREL, DT_PLTGOT, and DT_VERSYM l_info entry. (_ELF_DYNAMIC_DO_RELOC): Take extra argument which specifies whether rel and rela relocations can both happen and skip one test if this is not possible. (ELF_DYNAMIC_DO_RELA, ELF_DYNAMIC_DO_REL): Call _ELF_DYNAMIC_DO_RELOC appropriately. * elf/dl-addr.c (_dl_addr): DT_SYMTAB and DT_STRTAB entries are already relocated. * elf/dl-deps.c (_dl_map_object_deps): DT_STRTAB entry is already relocated. * elf/dl-load.c (_dl_init_paths): DT_STRTAB entry is already relocated. (_dl_map_object_from_fd): Call elf_get_dynamic_info with new argument. (_dl_map_object): DT_STRTAB entry is already relocated. * elf/dl-lookup.c (do_lookup): DT_STRTAB and DT_SYMTAB entries are already relocated. * elf/dl-reloc.c (_dl_relocate_object): DT_STRTAB entry is already relocated. * elf/dl-runtime.c (fixup): DT_SYMTAB, DT_STRTAB, DT_JMPREL, and DT_VERSYM entries are already relocated. (profile_fixup): Likewise. * elf/dl-version.c: Rename VERSTAG macro into VERSYMIDX. Replace all users. (match_symbol): DT_STRTAB entry is already relocated. (_dl_check_map_versions): Likewise. Also fo DT_VERSYM. * elf/do-rel.h (elf_dynamic_do_rel): reladdr is now assumed to be relocated already. DT_SYMTAB and DT_VERSYM entries are also relocated. * elf/rtld.c (_dl_start): Pass extra argument to elf_get_dynamic_info. (find_needed): DT_STRTAB entry is already relocated. (dl_main): Pass extra argument to elf_get_dynamic_info. DT_STRTAB entry is already relocated. * sysdeps/alpha/dl-machine.h (elf_machine_fixup_plt): DT_JMPREL and DT_PLTGOT entries are already relocated. (elf_machine_rela): Likewise for DT_SYMTAB. * sysdeps/arm/dl-machine.h (elf_machine_rel): DT_STRTAB is already relocated. * sysdeps/i386/dl-machine.h (elf_machine_rel): Likewise. * sysdeps/m68k/dl-machine.h (elf_machine_rela): Likewise. * sysdeps/sparc/sparc32/dl-machine.h (elf_machine_rela): Likewise. * sysdeps/sparc/sparc64/dl-machine.h (elf_machine_rela): Likewise. * sysdeps/powerpc/dl-machine.c (__process_machine_rela): Likewise. * sysdeps/mips/dl-machine.h (elf_machine_got_rel): Likewise. (elf_machine_got_rel): Likewise for DT_SYMTAB and DT_STRTAB. * grp/initgroups.c (initgroups): If function in current module was successful don't stop but continue to process to get all the groups.
Diffstat (limited to 'elf/dynamic-link.h')
-rw-r--r--elf/dynamic-link.h113
1 files changed, 74 insertions, 39 deletions
diff --git a/elf/dynamic-link.h b/elf/dynamic-link.h
index 3d96ecc..d322c12 100644
--- a/elf/dynamic-link.h
+++ b/elf/dynamic-link.h
@@ -21,6 +21,10 @@
#include <dl-machine.h>
#include <assert.h>
+#ifndef VERSYMIDX
+# define VERSYMIDX(sym) (DT_NUM + DT_PROCNUM + DT_VERSIONTAGIDX (sym))
+#endif
+
/* Global read-only variable defined in rtld.c which is nonzero if we
shall give more warning messages. */
@@ -30,13 +34,10 @@ extern int _dl_verbose __attribute__ ((unused));
/* Read the dynamic section at DYN and fill in INFO with indices DT_*. */
static inline void __attribute__ ((unused))
-elf_get_dynamic_info (ElfW(Dyn) *dyn,
+elf_get_dynamic_info (ElfW(Dyn) *dyn, ElfW(Addr) l_addr,
ElfW(Dyn) *info[DT_NUM + DT_PROCNUM + DT_VERSIONTAGNUM
+ DT_EXTRANUM])
{
- memset (info, '\0', ((DT_NUM + DT_PROCNUM + DT_VERSIONTAGNUM + DT_EXTRANUM)
- * sizeof (ElfW(Dyn) *)));
-
if (! dyn)
return;
@@ -48,7 +49,7 @@ elf_get_dynamic_info (ElfW(Dyn) *dyn,
dyn->d_tag < DT_LOPROC + DT_PROCNUM)
info[dyn->d_tag - DT_LOPROC + DT_NUM] = dyn;
else if ((Elf32_Word) DT_VERSIONTAGIDX (dyn->d_tag) < DT_VERSIONTAGNUM)
- info[DT_VERSIONTAGIDX (dyn->d_tag) + DT_NUM + DT_PROCNUM] = dyn;
+ 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_PROCNUM
+ DT_VERSIONTAGNUM] = dyn;
@@ -57,13 +58,41 @@ elf_get_dynamic_info (ElfW(Dyn) *dyn,
++dyn;
}
- if (info[DT_RELA])
- assert (info[DT_RELAENT]->d_un.d_val == sizeof (ElfW(Rela)));
- if (info[DT_REL])
- assert (info[DT_RELENT]->d_un.d_val == sizeof (ElfW(Rel)));
- if (info[DT_PLTREL])
- assert (info[DT_PLTREL]->d_un.d_val == DT_REL ||
- info[DT_PLTREL]->d_un.d_val == DT_RELA);
+ 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
+ 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
+ }
+ 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;
}
#ifdef RESOLVE
@@ -73,13 +102,13 @@ elf_get_dynamic_info (ElfW(Dyn) *dyn,
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
+/* 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) \
+# 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; \
@@ -96,7 +125,7 @@ elf_get_dynamic_info (ElfW(Dyn) *dyn,
\
if ((do_lazy) \
&& (map)->l_info[DT_PLTREL] \
- && (map)->l_info[DT_PLTREL]->d_un.d_val == DT_##RELOC) \
+ && (!test_rel || (map)->l_info[DT_PLTREL]->d_un.d_val == DT_##RELOC)) \
{ \
ranges[1].start = (map)->l_info[DT_JMPREL]->d_un.d_ptr; \
ranges[1].size = (map)->l_info[DT_PLTRELSZ]->d_un.d_val; \
@@ -111,8 +140,8 @@ elf_get_dynamic_info (ElfW(Dyn) *dyn,
ranges[ranges_index].size, \
ranges[ranges_index].lazy); \
} while (0)
-#else
-#define _ELF_DYNAMIC_DO_RELOC(RELOC, reloc, map, do_lazy) \
+# 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; \
@@ -125,8 +154,8 @@ elf_get_dynamic_info (ElfW(Dyn) *dyn,
ranges[0].start = (map)->l_info[DT_##RELOC]->d_un.d_ptr; \
ranges[0].size = (map)->l_info[DT_##RELOC##SZ]->d_un.d_val; \
} \
- if ((map)->l_info[DT_PLTREL] && \
- (map)->l_info[DT_PLTREL]->d_un.d_val == DT_##RELOC) \
+ if ((map)->l_info[DT_PLTREL] \
+ && (!test_rel || (map)->l_info[DT_PLTREL]->d_un.d_val == DT_##RELOC)) \
{ \
ElfW(Addr) start = (map)->l_info[DT_JMPREL]->d_un.d_ptr; \
\
@@ -151,28 +180,34 @@ elf_get_dynamic_info (ElfW(Dyn) *dyn,
ranges[ranges_index].size, \
ranges[ranges_index].lazy); \
} while (0)
-#endif
-
-#if ! ELF_MACHINE_NO_REL
-#include "do-rel.h"
-#define ELF_DYNAMIC_DO_REL(map, lazy) \
- _ELF_DYNAMIC_DO_RELOC (REL, rel, map, lazy)
-#else
-#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) \
- _ELF_DYNAMIC_DO_RELOC (RELA, rela, map, lazy)
-#else
-#define ELF_DYNAMIC_DO_RELA(map, lazy) /* Nothing to do. */
-#endif
+# 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
+# include "do-rel.h"
+# 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 DO_RELA
+# include "do-rel.h"
+# 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) \
+# define ELF_DYNAMIC_RELOCATE(map, lazy, consider_profile) \
do { \
int edr_lazy = elf_machine_runtime_setup ((map), (lazy), \
(consider_profile)); \