From af5b3bc33bbaf9151c34a351bdb257b90d407d5b Mon Sep 17 00:00:00 2001 From: Roland McGrath Date: Mon, 8 Jul 1996 06:18:25 +0000 Subject: Mon Jul 8 02:14:25 1996 Roland McGrath * libc-symbols.h [GCC >= 2.7] (strong_alias, weak_alias): Use extern storage class. GCC gives an error for non-extern data defns with the alias attribute. Mon Jul 8 00:11:15 1996 Roland McGrath * libc-symbols.h (weak_function): New macro. For GCC 2.7+ define as __attribute__ ((weak)). * elf/dl-minimal.c: Use weak_function as keyword in function defns instead of weak_symbol (NAME) after the defn. * stdlib/strtol.c: Likewise. * sysdeps/mach/hurd/dl-sysdep.c: Likewise. * sysdeps/alpha/dl-machine.h (elf_machine_rela) [RTLD_BOOTSTRAP]: If this is defined, don't declare _dl_rtld_map as weak, and don't check for MAP pointing to it. RESOLVE is always null in this case, so test with #ifdef instead of if. * libc-symbols.h (symbol_set_declare): Use weak_extern instead of weak_symbol. * csu/initfini.c (_init): Likewise. * locale/setlocale.c (DEFINE_CATEGORY): Likewise. * misc/efgcvt_r.c: Likewise. * sysdeps/alpha/dl-machine.h (elf_machine_rela): Likewise. * sysdeps/i386/dl-machine.h (elf_machine_rel): Likewise. * libc-symbols.h [ASSEMBLER] (weak_symbol): Macro removed. It was not used in any assembler code. (weak_symbol_asm): Renamed to weak_extern_asm. (weak_extern): New macro replaces weak_symbol for weak extern refs; define to weak_extern_asm for [!ASSEMBLER]. * libc-symbols.h [! ASSEMBLER] [HAVE_WEAK_SYMBOLS] (weak_symbol_asm, weak_alias_asm): New macros, renamed from weak_symbol/weak_alias; define those now as aliases. Change conditional to use __attribute__ syntax for GCC 2.7+, not 2.8+ [GCC >= 2.7] [HAVE_WEAK_SYMBOLS] (weak_symbol): Do weak_symbol_asm after GCC weak attribute decl. --- sysdeps/alpha/dl-machine.h | 39 +++++++++++++++++++++++---------------- 1 file changed, 23 insertions(+), 16 deletions(-) (limited to 'sysdeps/alpha/dl-machine.h') diff --git a/sysdeps/alpha/dl-machine.h b/sysdeps/alpha/dl-machine.h index bfde6662bf..8986ed7d58 100644 --- a/sysdeps/alpha/dl-machine.h +++ b/sysdeps/alpha/dl-machine.h @@ -161,7 +161,14 @@ elf_machine_rela (struct link_map *map, { Elf64_Addr *const reloc_addr = (void *)(map->l_addr + reloc->r_offset); unsigned long r_info = ELF64_R_TYPE (reloc->r_info); - weak_symbol (_dl_rtld_map); /* Defined in rtld.c, but not in libc.a. */ +#ifndef RTLD_BOOTSTRAP + /* This is defined in rtld.c, but nowhere in the static libc.a; make the + reference weak so static programs can still link. This declaration + cannot be done when compiling rtld.c (i.e. #ifdef RTLD_BOOTSTRAP) + because rtld.c contains the common defn for _dl_rtld_map, which is + incompatible with a weak decl in the same file. */ + weak_extern (_dl_rtld_map); +#endif /* We cannot use a switch here because we cannot locate the switch jump table until we've self-relocated. */ @@ -169,38 +176,37 @@ elf_machine_rela (struct link_map *map, if (r_info == R_ALPHA_RELATIVE) { /* Already done in dynamic linker. */ - if (!resolve || map != &_dl_rtld_map) +#ifndef RTLD_BOOTSTRAP + if (map != &_dl_rtld_map) +#endif *reloc_addr += map->l_addr; } else if (r_info == R_ALPHA_NONE) - ; + return; else { Elf64_Addr loadbase, sym_value; - if (resolve) - { - loadbase = (*resolve)(&sym, (Elf64_Addr)reloc_addr, - r_info == R_ALPHA_JMP_SLOT); - } - else - loadbase = map->l_addr; - +#ifndef RTLD_BOOTSTRAP + loadbase = (*resolve)(&sym, (Elf64_Addr)reloc_addr, + r_info == R_ALPHA_JMP_SLOT); +#else + loadbase = map->l_addr; +#endif sym_value = sym ? loadbase + sym->st_value : 0; if (r_info == R_ALPHA_GLOB_DAT) - { - *reloc_addr = sym_value; - } + *reloc_addr = sym_value; else if (r_info == R_ALPHA_JMP_SLOT) { *reloc_addr = sym_value; - elf_alpha_fix_plt(map, reloc, (Elf64_Addr)reloc_addr, sym_value); + elf_alpha_fix_plt (map, reloc, (Elf64_Addr) reloc_addr, sym_value); } else if (r_info == R_ALPHA_REFQUAD) { sym_value += *reloc_addr; - if (resolve && map == &_dl_rtld_map) +#ifndef RTLD_BOOTSTRAP + if (map == &_dl_rtld_map) { /* Undo the relocation done here during bootstrapping. Now we will relocate anew, possibly using a binding @@ -213,6 +219,7 @@ elf_machine_rela (struct link_map *map, sym_value -= dlsymtab[ELF64_R_SYM(reloc->r_info)].st_value; } else +#endif sym_value += reloc->r_addend; *reloc_addr = sym_value; } -- cgit v1.2.3