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authorUlrich Drepper <drepper@redhat.com>2000-05-05 07:15:29 +0000
committerUlrich Drepper <drepper@redhat.com>2000-05-05 07:15:29 +0000
commitc0282c0642e99b375ab14fd343aa537445cd72a4 (patch)
tree2fb1716922b899555ab3bdcfbd95225d7e1e912d /elf/dl-runtime.c
parent61d357cae37d7d84afa50bdba12dcf177980e7bf (diff)
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Update.
2000-05-05 Ulrich Drepper <drepper@redhat.com> * elf/dl-load.c (_dl_map_object_from_fd): Little of computation of parameter to mprotect and for variable assignments. 2000-05-03 Jes Sorensen <jes@linuxcare.com> * sysdeps/generic/ldsodefs.h (LOOKUP_VALUE_ADDRESS): Check the validity of map before dereferencing it. * elf/dl-reloc.c (RESOLVE_MAP): Define. 2000-05-02 Jes Sorensen <jes@linuxcare.com> * elf/dl-runtime.c (fixup): Add the value returned in the symbol lookup to the arguments to elf_machine_fixup_plt(). * sysdeps/ia64/dl-machine.h (elf_machine_fixup_plt): Add Link_map of the symbol being resolved to input argument list and make the function return the pointer to the reloc. * sysdeps/alpha/dl-machine.h (elf_machine_fixup_plt): Change return valuie to lookup_t and return the value. * sysdeps/arm/dl-machine.h (elf_machine_fixup_plt): Likewise. * sysdeps/generic/dl-machine.h (elf_machine_fixup_plt): Likewise. * sysdeps/i386/dl-machine.h (elf_machine_fixup_plt): Likewise. * sysdeps/m68k/dl-machine.h (elf_machine_fixup_plt): Likewise. * sysdeps/sparc/sparc32/dl-machine.h (elf_machine_fixup_plt): Likewise. * sysdeps/sparc/sparc64/dl-machine.h (elf_machine_fixup_plt): Likewise. * sysdeps/powerpc/dl-machine.h (elf_machine_fixup_plt): Likewise. Make it an inline function returning value after calling __elf_machine_fixup_plt(). * elf/dl-sym.c (_dl_vsym): Use DL_SYMBOL_ADDRESS() to obtain the symbol address. * elf/dl-symbol.c (_dl_symbol_value): Use LOOKUP_VALUE_ADDRESS to obtain the symbol address. * sysdeps/generic/ldsodefs.h: Add generic DL_SYMBOL_ADDRESS() macro depending on the definition of ELF_FUNCTION_PTR_IS_SPECIAL. * sysdeps/ia64/dl-machine.h: Add DL_SYMBOL_ADDRESS() macro calling _dl_symbol_address() - this way DL_SYMBOL_ADDRESS() turns into an inline on non ia64. 2000-04-28 Jes Sorensen <jes@linuxcare.com> * elf/dl-runtime.c (fixup): Use the portable macros to get the symbol address of an object. * elf/dl-runtime.c (fixup-profile): Use the portable macros to get the symbol address of an object. * elf/dl-libc.c (struct do_dlsym_args): Change loadbase to a lookup_t. * elf/dl-lookup.c (_dl_lookup_symbol): Likewise. (_dl_lookup_symbol_skip): Likewise. (_dl_lookup_versioned_symbol): Likewise. (_dl_lookup_versioned_symbol_skip): Likewise. 2000-04-27 Jes Sorensen <jes@linuxcare.com> * elf/rtld.c (_dl_start): Get the function pointer return address via _dl_start_address for architectures that need a function pointer descriptor rather than just a pointer (ia64). * sysdeps/generic/dl-lookupcfg.h: New file. * sysdeps/ia64/dl-lookupcfg.h: New file. * sysdeps/ia64/dl-machine.h: New file. * sysdeps/ia64/dl-symaddr.c: New file. * sysdeps/ia64/dl-fptr.c: New file. * elf/elf.h: Add IA-64 specific definitions.
Diffstat (limited to 'elf/dl-runtime.c')
-rw-r--r--elf/dl-runtime.c56
1 files changed, 34 insertions, 22 deletions
diff --git a/elf/dl-runtime.c b/elf/dl-runtime.c
index d76b513..6237afc 100644
--- a/elf/dl-runtime.c
+++ b/elf/dl-runtime.c
@@ -57,6 +57,7 @@ fixup (
= (const void *) (D_PTR (l, l_info[DT_JMPREL]) + reloc_offset);
const ElfW(Sym) *sym = &symtab[ELFW(R_SYM) (reloc->r_info)];
void *const rel_addr = (void *)(l->l_addr + reloc->r_offset);
+ lookup_t result;
ElfW(Addr) value;
/* The use of `alloca' here looks ridiculous but it helps. The goal is
@@ -83,33 +84,38 @@ fixup (
if (version->hash != 0)
{
- value = _dl_lookup_versioned_symbol(strtab + sym->st_name, l,
- &sym, l->l_scope, version,
- ELF_MACHINE_JMP_SLOT);
+ result = _dl_lookup_versioned_symbol (strtab + sym->st_name,
+ l, &sym, l->l_scope,
+ version,
+ ELF_MACHINE_JMP_SLOT);
break;
}
}
case 0:
- value = _dl_lookup_symbol (strtab + sym->st_name, l, &sym,
- l->l_scope, ELF_MACHINE_JMP_SLOT);
+ result = _dl_lookup_symbol (strtab + sym->st_name, l, &sym,
+ l->l_scope, ELF_MACHINE_JMP_SLOT);
}
- /* Currently value contains the base load address of the object
- that defines sym. Now add in the symbol offset. */
- value = (sym ? value + sym->st_value : 0);
+ /* Currently result contains the base load address (or link map)
+ of the object that defines sym. Now add in the symbol
+ offset. */
+ value = (sym ? LOOKUP_VALUE_ADDRESS (result) + sym->st_value : 0);
}
else
+ {
/* We already found the symbol. The module (and therefore its load
address) is also known. */
- value = l->l_addr + sym->st_value;
+ value = l->l_addr + sym->st_value;
+#ifdef DL_LOOKUP_RETURNS_MAP
+ result = l;
+#endif
+ }
/* And now perhaps the relocation addend. */
value = elf_machine_plt_value (l, reloc, value);
/* Finally, fix up the plt itself. */
- elf_machine_fixup_plt (l, reloc, rel_addr, value);
-
- return value;
+ return elf_machine_fixup_plt (l, result, reloc, rel_addr, value);
}
#endif
@@ -124,6 +130,7 @@ profile_fixup (
{
void (*mcount_fct) (ElfW(Addr), ElfW(Addr)) = _dl_mcount;
ElfW(Addr) *resultp;
+ lookup_t result;
ElfW(Addr) value;
/* The use of `alloca' here looks ridiculous but it helps. The goal is
@@ -166,27 +173,32 @@ profile_fixup (
if (version->hash != 0)
{
- value = _dl_lookup_versioned_symbol(strtab + sym->st_name,
- l, &sym, l->l_scope,
- version,
- ELF_MACHINE_JMP_SLOT);
+ result = _dl_lookup_versioned_symbol(strtab + sym->st_name,
+ l, &sym, l->l_scope,
+ version,
+ ELF_MACHINE_JMP_SLOT);
break;
}
}
case 0:
- value = _dl_lookup_symbol (strtab + sym->st_name, l, &sym,
- l->l_scope, ELF_MACHINE_JMP_SLOT);
+ result = _dl_lookup_symbol (strtab + sym->st_name, l, &sym,
+ l->l_scope, ELF_MACHINE_JMP_SLOT);
}
- /* Currently value contains the base load address of the object
- that defines sym. Now add in the symbol offset. */
- value = (sym ? value + sym->st_value : 0);
+ /* Currently result contains the base load address (or link map)
+ of the object that defines sym. Now add in the symbol
+ offset. */
+ value = (sym ? LOOKUP_VALUE_ADDRESS (result) + sym->st_value : 0);
}
else
+ {
/* We already found the symbol. The module (and therefore its load
address) is also known. */
value = l->l_addr + sym->st_value;
-
+#ifdef DL_LOOKUP_RETURNS_MAP
+ result = l;
+#endif
+ }
/* And now perhaps the relocation addend. */
value = elf_machine_plt_value (l, reloc, value);