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-rw-r--r--elf/dl-runtime.c71
1 files changed, 68 insertions, 3 deletions
diff --git a/elf/dl-runtime.c b/elf/dl-runtime.c
index 7a44ea4..1b34026 100644
--- a/elf/dl-runtime.c
+++ b/elf/dl-runtime.c
@@ -137,17 +137,18 @@ fixup (
/* Perform the specified relocation. */
if (l->l_info[VERSYMIDX (DT_VERSYM)])
{
- const ElfW(Half) * version =
+ const ElfW(Half) *version =
(const ElfW(Half) *) (l->l_addr +
l->l_info[VERSYMIDX (DT_VERSYM)]->d_un.d_ptr);
ElfW(Half) ndx = version[ELFW(R_SYM) (reloc->r_info)];
elf_machine_relplt (l, reloc, &symtab[ELFW(R_SYM) (reloc->r_info)],
- &l->l_versions[ndx]);
+ &l->l_versions[ndx],
+ (void *) (l->l_addr + reloc->r_offset));
}
else
elf_machine_relplt (l, reloc, &symtab[ELFW(R_SYM) (reloc->r_info)],
- NULL);
+ NULL, (void *) (l->l_addr + reloc->r_offset));
}
*_dl_global_scope_end = NULL;
@@ -161,6 +162,70 @@ fixup (
}
+#ifndef PROF
+static ElfW(Addr)
+profile_fixup (
+#ifdef ELF_MACHINE_RUNTIME_FIXUP_ARGS
+ ELF_MACHINE_RUNTIME_FIXUP_ARGS,
+#endif
+ struct link_map *l, ElfW(Word) reloc_offset, ElfW(Addr) retaddr)
+{
+ void (*mcount_fct) (ElfW(Addr), ElfW(Addr)) = _dl_mcount;
+ const ElfW(Sym) *const symtab
+ = (const ElfW(Sym) *) (l->l_addr + l->l_info[DT_SYMTAB]->d_un.d_ptr);
+ const char *strtab =
+ (const char *) (l->l_addr + l->l_info[DT_STRTAB]->d_un.d_ptr);
+
+ const PLTREL *const reloc
+ = (const void *) (l->l_addr + l->l_info[DT_JMPREL]->d_un.d_ptr +
+ reloc_offset);
+ ElfW(Addr) result;
+
+ /* Set up the scope to find symbols referenced by this object. */
+ struct link_map **scope = _dl_object_relocation_scope (l);
+
+ {
+ /* This macro is used as a callback from the elf_machine_relplt code. */
+#define RESOLVE(ref, version, flags) \
+ ((version) != NULL && (version)->hash != 0 \
+ ? _dl_lookup_versioned_symbol (strtab + (*ref)->st_name, (ref), scope, \
+ l->l_name, (version), (flags)) \
+ : _dl_lookup_symbol (strtab + (*ref)->st_name, (ref), scope, \
+ l->l_name, (flags)))
+#include "dynamic-link.h"
+
+ /* Perform the specified relocation. */
+ if (l->l_info[VERSYMIDX (DT_VERSYM)])
+ {
+ const ElfW(Half) *version =
+ (const ElfW(Half) *) (l->l_addr +
+ l->l_info[VERSYMIDX (DT_VERSYM)]->d_un.d_ptr);
+ ElfW(Half) ndx = version[ELFW(R_SYM) (reloc->r_info)];
+
+ elf_machine_relplt (l, reloc, &symtab[ELFW(R_SYM) (reloc->r_info)],
+ &l->l_versions[ndx], (void *) &result);
+ }
+ else
+ elf_machine_relplt (l, reloc, &symtab[ELFW(R_SYM) (reloc->r_info)],
+ NULL, (void *) &result);
+ }
+
+ *_dl_global_scope_end = NULL;
+
+ /* Return the address that was written by the relocation. */
+#ifdef ELF_FIXUP_RETURNS_ADDRESS
+ (*mcount_fct) (retaddr, result);
+
+ return &result; /* XXX This cannot work. What to do??? --drepper */
+#else
+ (*mcount_fct) (retaddr, result);
+
+ return result;
+#endif
+}
+#endif
+
+
/* This macro is defined in dl-machine.h to define the entry point called
by the PLT. The `fixup' function above does the real work, but a little
more twiddling is needed to get the stack right and jump to the address