diff options
Diffstat (limited to 'ldso/ldso/arm/elfinterp.c')
| -rw-r--r-- | ldso/ldso/arm/elfinterp.c | 85 |
1 files changed, 64 insertions, 21 deletions
diff --git a/ldso/ldso/arm/elfinterp.c b/ldso/ldso/arm/elfinterp.c index 96809a9ae..402ba9618 100644 --- a/ldso/ldso/arm/elfinterp.c +++ b/ldso/ldso/arm/elfinterp.c @@ -36,6 +36,11 @@ extern int _dl_linux_resolve(void); unsigned long _dl_linux_resolver(struct elf_resolve *tpnt, int reloc_entry) { +#if __FDPIC__ + /* FIXME: implement. */ + while(1) ; + return 0; +#else ELF_RELOC *this_reloc; char *strtab; char *symname; @@ -88,6 +93,7 @@ unsigned long _dl_linux_resolver(struct elf_resolve *tpnt, int reloc_entry) #endif return new_addr; +#endif } static int @@ -181,7 +187,7 @@ _dl_do_reloc (struct elf_resolve *tpnt,struct r_scope_elem *scope, struct elf_resolve *def_mod = 0; int goof = 0; - reloc_addr = (unsigned long *) (tpnt->loadaddr + (unsigned long) rpnt->r_offset); + reloc_addr = (unsigned long *) DL_RELOC_ADDR(tpnt->loadaddr, rpnt->r_offset); reloc_type = ELF_R_TYPE(rpnt->r_info); symtab_index = ELF_R_SYM(rpnt->r_info); @@ -191,25 +197,30 @@ _dl_do_reloc (struct elf_resolve *tpnt,struct r_scope_elem *scope, symname = strtab + symtab[symtab_index].st_name; if (symtab_index) { - symbol_addr = (unsigned long)_dl_find_hash(symname, scope, tpnt, - elf_machine_type_class(reloc_type), &sym_ref); - - /* - * We want to allow undefined references to weak symbols - this might - * have been intentional. We should not be linking local symbols - * here, so all bases should be covered. - */ - if (!symbol_addr && (ELF_ST_TYPE(symtab[symtab_index].st_info) != STT_TLS) - && (ELF_ST_BIND(symtab[symtab_index].st_info) != STB_WEAK)) { - /* This may be non-fatal if called from dlopen. */ - return 1; - - } - if (_dl_trace_prelink) { - _dl_debug_lookup (symname, tpnt, &symtab[symtab_index], - &sym_ref, elf_machine_type_class(reloc_type)); + if (ELF_ST_BIND (symtab[symtab_index].st_info) == STB_LOCAL) { + symbol_addr = (unsigned long) DL_RELOC_ADDR(tpnt->loadaddr, symtab[symtab_index].st_value); + def_mod = tpnt; + } else { + symbol_addr = (unsigned long)_dl_find_hash(symname, scope, tpnt, + elf_machine_type_class(reloc_type), &sym_ref); + + /* + * We want to allow undefined references to weak symbols - this might + * have been intentional. We should not be linking local symbols + * here, so all bases should be covered. + */ + if (!symbol_addr && (ELF_ST_TYPE(symtab[symtab_index].st_info) != STT_TLS) + && (ELF_ST_BIND(symtab[symtab_index].st_info) != STB_WEAK)) { + /* This may be non-fatal if called from dlopen. */ + return 1; + + } + if (_dl_trace_prelink) { + _dl_debug_lookup (symname, tpnt, &symtab[symtab_index], + &sym_ref, elf_machine_type_class(reloc_type)); + } + def_mod = sym_ref.tpnt; } - def_mod = sym_ref.tpnt; } else { /* * Relocs against STN_UNDEF are usually treated as using a @@ -267,12 +278,42 @@ _dl_do_reloc (struct elf_resolve *tpnt,struct r_scope_elem *scope, *reloc_addr = symbol_addr; break; case R_ARM_RELATIVE: - *reloc_addr += (unsigned long) tpnt->loadaddr; + *reloc_addr = DL_RELOC_ADDR(tpnt->loadaddr, *reloc_addr); break; case R_ARM_COPY: _dl_memcpy((void *) reloc_addr, (void *) symbol_addr, symtab[symtab_index].st_size); break; +#ifdef __FDPIC__ + case R_ARM_FUNCDESC_VALUE: + { + struct funcdesc_value funcval; + struct funcdesc_value *dst = (struct funcdesc_value *) reloc_addr; + + funcval.entry_point = (void*)symbol_addr; + /* Add offset to section address for local symbols. */ + if (ELF_ST_BIND(symtab[symtab_index].st_info) == STB_LOCAL) + funcval.entry_point += *reloc_addr; + funcval.got_value = def_mod->loadaddr.got_value; + *dst = funcval; + } + break; + case R_ARM_FUNCDESC: + { + unsigned long reloc_value = *reloc_addr; + + if (symbol_addr) + reloc_value = (unsigned long) _dl_funcdesc_for(symbol_addr + reloc_value, sym_ref.tpnt->loadaddr.got_value); + else + /* Relocation against an + undefined weak symbol: + set funcdesc to zero. */ + reloc_value = 0; + + *reloc_addr = reloc_value; + } + break; +#endif #if defined USE_TLS && USE_TLS case R_ARM_TLS_DTPMOD32: *reloc_addr = def_mod->l_tls_modid; @@ -330,7 +371,6 @@ _dl_do_lazy_reloc (struct elf_resolve *tpnt, struct r_scope_elem *scope, #endif return 0; - } void _dl_parse_lazy_relocation_information(struct dyn_elf *rpnt, @@ -345,3 +385,6 @@ int _dl_parse_relocation_information(struct dyn_elf *rpnt, return _dl_parse(rpnt->dyn, scope, rel_addr, rel_size, _dl_do_reloc); } +#ifndef IS_IN_libdl +# include "../../libc/sysdeps/linux/arm/crtreloc.c" +#endif |