diff options
| -rw-r--r-- | ChangeLog | 5 | ||||
| -rw-r--r-- | sysdeps/powerpc/powerpc32/power7/fpu/Implies | 1 | ||||
| -rw-r--r-- | sysdeps/x86_64/dl-machine.h | 114 |
3 files changed, 63 insertions, 57 deletions
diff --git a/ChangeLog b/ChangeLog index 215dfcdc34..933e81cb4f 100644 --- a/ChangeLog +++ b/ChangeLog @@ -1,3 +1,8 @@ +2009-03-11 Ulrich Drepper <drepper@redhat.com> + + * sysdeps/x86_64/dl-machine.h (elf_machine_rela): Add branch + prediction. A few size optimizations. + 2009-03-10 Ulrich Drepper <drepper@redhat.com> * time/tzset.c: Optimize a bit for size. diff --git a/sysdeps/powerpc/powerpc32/power7/fpu/Implies b/sysdeps/powerpc/powerpc32/power7/fpu/Implies new file mode 100644 index 0000000000..819a7d7979 --- /dev/null +++ b/sysdeps/powerpc/powerpc32/power7/fpu/Implies @@ -0,0 +1 @@ +powerpc/powerpc32/power5/fpu diff --git a/sysdeps/x86_64/dl-machine.h b/sysdeps/x86_64/dl-machine.h index 959b1328d7..8c67b5b5f9 100644 --- a/sysdeps/x86_64/dl-machine.h +++ b/sysdeps/x86_64/dl-machine.h @@ -1,5 +1,5 @@ /* Machine-dependent ELF dynamic relocation inline functions. x86-64 version. - Copyright (C) 2001-2005, 2006 Free Software Foundation, Inc. + Copyright (C) 2001-2005, 2006, 2008, 2009 Free Software Foundation, Inc. This file is part of the GNU C Library. Contributed by Andreas Jaeger <aj@suse.de>. @@ -266,40 +266,45 @@ elf_machine_rela (struct link_map *map, const Elf64_Rela *reloc, Elf64_Addr *const reloc_addr = reloc_addr_arg; const unsigned long int r_type = ELF64_R_TYPE (reloc->r_info); -#if !defined RTLD_BOOTSTRAP || !defined HAVE_Z_COMBRELOC +# if !defined RTLD_BOOTSTRAP || !defined HAVE_Z_COMBRELOC if (__builtin_expect (r_type == R_X86_64_RELATIVE, 0)) { -# if !defined RTLD_BOOTSTRAP && !defined HAVE_Z_COMBRELOC +# if !defined RTLD_BOOTSTRAP && !defined HAVE_Z_COMBRELOC /* 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. */ -# ifndef SHARED +# ifndef SHARED weak_extern (GL(dl_rtld_map)); -# endif +# endif if (map != &GL(dl_rtld_map)) /* Already done in rtld itself. */ -# endif +# endif *reloc_addr = map->l_addr + reloc->r_addend; } else -#endif +# endif if (__builtin_expect (r_type == R_X86_64_NONE, 0)) return; else { -#ifndef RTLD_BOOTSTRAP +# ifndef RTLD_BOOTSTRAP const Elf64_Sym *const refsym = sym; -#endif +# endif struct link_map *sym_map = RESOLVE_MAP (&sym, version, r_type); Elf64_Addr value = (sym == NULL ? 0 : (Elf64_Addr) sym_map->l_addr + sym->st_value); -#if defined RTLD_BOOTSTRAP && !USE___THREAD + if (sym != NULL + && __builtin_expect (ELFW(ST_TYPE) (sym->st_info) == STT_GNU_IFUNC, + 0)) + value = ((Elf64_Addr (*) (void)) value) (); + +# if defined RTLD_BOOTSTRAP && !USE___THREAD assert (r_type == R_X86_64_GLOB_DAT || r_type == R_X86_64_JUMP_SLOT); *reloc_addr = value + reloc->r_addend; -#else +# else switch (r_type) { case R_X86_64_GLOB_DAT: @@ -307,47 +312,47 @@ elf_machine_rela (struct link_map *map, const Elf64_Rela *reloc, *reloc_addr = value + reloc->r_addend; break; -#ifndef RESOLVE_CONFLICT_FIND_MAP +# ifndef RESOLVE_CONFLICT_FIND_MAP case R_X86_64_DTPMOD64: -# ifdef RTLD_BOOTSTRAP +# ifdef RTLD_BOOTSTRAP /* During startup the dynamic linker is always the module with index 1. XXX If this relocation is necessary move before RESOLVE call. */ *reloc_addr = 1; -# else +# else /* Get the information from the link map returned by the resolve function. */ if (sym_map != NULL) *reloc_addr = sym_map->l_tls_modid; -# endif +# endif break; case R_X86_64_DTPOFF64: -# ifndef RTLD_BOOTSTRAP +# ifndef RTLD_BOOTSTRAP /* During relocation all TLS symbols are defined and used. Therefore the offset is already correct. */ if (sym != NULL) *reloc_addr = sym->st_value + reloc->r_addend; -# endif +# endif break; case R_X86_64_TLSDESC: { struct tlsdesc volatile *td = (struct tlsdesc volatile *)reloc_addr; -# ifndef RTLD_BOOTSTRAP +# ifndef RTLD_BOOTSTRAP if (! sym) { td->arg = (void*)reloc->r_addend; td->entry = _dl_tlsdesc_undefweak; } else -# endif +# endif { -# ifndef RTLD_BOOTSTRAP -# ifndef SHARED +# ifndef RTLD_BOOTSTRAP +# ifndef SHARED CHECK_STATIC_TLS (map, sym_map); -# else +# else if (!TRY_STATIC_TLS (map, sym_map)) { td->arg = _dl_make_tlsdesc_dynamic @@ -355,8 +360,8 @@ elf_machine_rela (struct link_map *map, const Elf64_Rela *reloc, td->entry = _dl_tlsdesc_dynamic; } else +# endif # endif -# endif { td->arg = (void*)(sym->st_value - sym_map->l_tls_offset + reloc->r_addend); @@ -367,13 +372,13 @@ elf_machine_rela (struct link_map *map, const Elf64_Rela *reloc, } case R_X86_64_TPOFF64: /* The offset is negative, forward from the thread pointer. */ -# ifndef RTLD_BOOTSTRAP +# ifndef RTLD_BOOTSTRAP if (sym != NULL) -# endif +# endif { -# ifndef RTLD_BOOTSTRAP +# ifndef RTLD_BOOTSTRAP CHECK_STATIC_TLS (map, sym_map); -# endif +# endif /* We know the offset of the object the symbol is contained in. It is a negative value which will be added to the thread pointer. */ @@ -381,42 +386,41 @@ elf_machine_rela (struct link_map *map, const Elf64_Rela *reloc, - sym_map->l_tls_offset); } break; -#endif +# endif -#ifndef RTLD_BOOTSTRAP +# ifndef RTLD_BOOTSTRAP case R_X86_64_64: *reloc_addr = value + reloc->r_addend; break; case R_X86_64_32: - *(unsigned int *) reloc_addr = value + reloc->r_addend; - if (value + reloc->r_addend > UINT_MAX) + value += reloc->r_addend; + *(unsigned int *) reloc_addr = value; + + const char *fmt; + if (__builtin_expect (value > UINT_MAX, 0)) { const char *strtab; + fmt = "\ +%s: Symbol `%s' causes overflow in R_X86_64_32 relocation\n"; + print_err: strtab = (const char *) D_PTR (map, l_info[DT_STRTAB]); - _dl_error_printf ("\ -%s: Symbol `%s' causes overflow in R_X86_64_32 relocation\n", + _dl_error_printf (fmt, rtld_progname ?: "<program name unknown>", strtab + refsym->st_name); } break; -# ifndef RESOLVE_CONFLICT_FIND_MAP +# ifndef RESOLVE_CONFLICT_FIND_MAP /* Not needed for dl-conflict.c. */ case R_X86_64_PC32: - *(unsigned int *) reloc_addr = value + reloc->r_addend - - (Elf64_Addr) reloc_addr; - if (value + reloc->r_addend - (Elf64_Addr) reloc_addr - != (int)(value + reloc->r_addend - (Elf64_Addr) reloc_addr)) + value += reloc->r_addend - (Elf64_Addr) reloc_addr; + *(unsigned int *) reloc_addr = value; + if (__builtin_expect (value != (unsigned int) value, 0)) { - const char *strtab; - - strtab = (const char *) D_PTR (map, l_info[DT_STRTAB]); - - _dl_error_printf ("\ -%s: Symbol `%s' causes overflow in R_X86_64_PC32 relocation\n", - rtld_progname ?: "<program name unknown>", - strtab + refsym->st_name); + fmt = "\ +%s: Symbol `%s' causes overflow in R_X86_64_PC32 relocation\n"; + goto print_err; } break; case R_X86_64_COPY: @@ -424,26 +428,22 @@ elf_machine_rela (struct link_map *map, const Elf64_Rela *reloc, /* This can happen in trace mode if an object could not be found. */ break; + memcpy (reloc_addr_arg, (void *) value, + MIN (sym->st_size, refsym->st_size)); if (__builtin_expect (sym->st_size > refsym->st_size, 0) || (__builtin_expect (sym->st_size < refsym->st_size, 0) && GLRO(dl_verbose))) { - const char *strtab; - - strtab = (const char *) D_PTR (map, l_info[DT_STRTAB]); - _dl_error_printf ("\ -%s: Symbol `%s' has different size in shared object, consider re-linking\n", - rtld_progname ?: "<program name unknown>", - strtab + refsym->st_name); + fmt = "\ +%s: Symbol `%s' has different size in shared object, consider re-linking\n"; + goto print_err; } - memcpy (reloc_addr_arg, (void *) value, - MIN (sym->st_size, refsym->st_size)); break; -# endif +# endif default: _dl_reloc_bad_type (map, r_type, 0); break; -#endif +# endif } #endif } |