diff options
| -rw-r--r-- | ld/ChangeLog | 20 | ||||
| -rw-r--r-- | ld/Makefile.am | 4 | ||||
| -rw-r--r-- | ld/Makefile.in | 4 | ||||
| -rw-r--r-- | ld/emulparams/elf32_sparc_sol2.sh | 1 | ||||
| -rw-r--r-- | ld/emulparams/elf64_sparc_sol2.sh | 1 | ||||
| -rw-r--r-- | ld/emulparams/elf_i386_sol2.sh | 1 | ||||
| -rw-r--r-- | ld/emulparams/elf_x86_64_sol2.sh | 1 | ||||
| -rw-r--r-- | ld/emulparams/solaris2.sh | 10 | ||||
| -rw-r--r-- | ld/emultempl/solaris2.em | 72 |
9 files changed, 101 insertions, 13 deletions
diff --git a/ld/ChangeLog b/ld/ChangeLog index 24f3bc8..1751368 100644 --- a/ld/ChangeLog +++ b/ld/ChangeLog @@ -1,3 +1,23 @@ +2010-10-12 Rainer Orth <ro@CeBiTec.Uni-Bielefeld.DE> + + * emultempl/solaris2.em (elf_solaris2_before_allocation): Renamed + basever_syms to global_syms. + Emit global_syms into .dynamic section for all executables and + shared objects. + (elf_solaris2_after_allocation): New function. + (LDEMUL_AFTER_ALLOCATION): Use it. + * emulparams/solaris2.sh: New file. + * emulparams/elf32_sparc_sol2.sh: Use it. + * emulparams/elf64_sparc_sol2.sh: Likewise. + * emulparams/elf_i386_sol2.sh: Likewise. + * emulparams/elf_x86_64_sol2.sh: Likewise. + * Makefile.am (eelf32_sparc_sol2.c): Depend on + $(srcdir)/emulparams/solaris2.sh. + (eelf64_sparc_sol2.c): Likewise. + (eelf_x86_64_sol2.c): Likewise. + (eelf_i386_sol2.c): Likewise. + * Makefile.in: Regenerate. + 2010-10-06 Nick Clifton <nickc@redhat.com> * ld.texinfo: Update description of computation of VMA and LMA diff --git a/ld/Makefile.am b/ld/Makefile.am index 982c33c..05a7de6 100644 --- a/ld/Makefile.am +++ b/ld/Makefile.am @@ -857,6 +857,7 @@ eelf32_sparc.c: $(srcdir)/emulparams/elf32_sparc.sh \ ${GENSCRIPTS} elf32_sparc "$(tdir_elf32_sparc)" eelf32_sparc_sol2.c: $(srcdir)/emulparams/elf32_sparc_sol2.sh \ $(srcdir)/emulparams/elf32_sparc.sh \ + $(srcdir)/emulparams/solaris2.sh \ $(srcdir)/emultempl/solaris2.em $(ELF_DEPS) \ $(srcdir)/scripttempl/elf.sc ${GEN_DEPENDS} ${GENSCRIPTS} elf32_sparc_sol2 "$(tdir_elf32_sparc_sol2)" @@ -1115,6 +1116,7 @@ eelf64_sparc_fbsd.c: $(srcdir)/emulparams/elf64_sparc_fbsd.sh \ ${GENSCRIPTS} elf64_sparc_fbsd "$(tdir_elf64_sparc_fbsd)" eelf64_sparc_sol2.c: $(srcdir)/emulparams/elf64_sparc_sol2.sh \ $(srcdir)/emulparams/elf64_sparc.sh \ + $(srcdir)/emulparams/solaris2.sh \ $(srcdir)/emultempl/solaris2.em \ $(ELF_DEPS) $(srcdir)/scripttempl/elf.sc ${GEN_DEPENDS} ${GENSCRIPTS} elf64_sparc_sol2 "$(tdir_elf64_sparc_sol2)" @@ -1155,6 +1157,7 @@ eelf_x86_64_fbsd.c: $(srcdir)/emulparams/elf_x86_64_fbsd.sh \ ${GENSCRIPTS} elf_x86_64_fbsd "$(tdir_elf_x86_64_fbsd)" eelf_x86_64_sol2.c: $(srcdir)/emulparams/elf_x86_64_sol2.sh \ $(srcdir)/emulparams/elf_x86_64.sh \ + $(srcdir)/emulparams/solaris2.sh \ $(srcdir)/emultempl/solaris2.em \ $(ELF_DEPS) $(srcdir)/scripttempl/elf.sc ${GEN_DEPENDS} ${GENSCRIPTS} elf_x86_64_sol2 "$(tdir_elf_x86_64_sol2)" @@ -1179,6 +1182,7 @@ eelf_i386_ldso.c: $(srcdir)/emulparams/elf_i386_ldso.sh \ $(ELF_DEPS) $(srcdir)/scripttempl/elf.sc ${GEN_DEPENDS} ${GENSCRIPTS} elf_i386_ldso "$(tdir_elf_i386_ldso)" eelf_i386_sol2.c: $(srcdir)/emulparams/elf_i386_sol2.sh \ + $(srcdir)/emulparams/solaris2.sh \ $(srcdir)/emultempl/solaris2.em \ $(ELF_DEPS) $(srcdir)/scripttempl/elf.sc ${GEN_DEPENDS} ${GENSCRIPTS} elf_i386_sol2 "$(tdir_elf_i386_sol2)" diff --git a/ld/Makefile.in b/ld/Makefile.in index 1c28b73..f365e1c 100644 --- a/ld/Makefile.in +++ b/ld/Makefile.in @@ -2210,6 +2210,7 @@ eelf32_sparc.c: $(srcdir)/emulparams/elf32_sparc.sh \ ${GENSCRIPTS} elf32_sparc "$(tdir_elf32_sparc)" eelf32_sparc_sol2.c: $(srcdir)/emulparams/elf32_sparc_sol2.sh \ $(srcdir)/emulparams/elf32_sparc.sh \ + $(srcdir)/emulparams/solaris2.sh \ $(srcdir)/emultempl/solaris2.em $(ELF_DEPS) \ $(srcdir)/scripttempl/elf.sc ${GEN_DEPENDS} ${GENSCRIPTS} elf32_sparc_sol2 "$(tdir_elf32_sparc_sol2)" @@ -2468,6 +2469,7 @@ eelf64_sparc_fbsd.c: $(srcdir)/emulparams/elf64_sparc_fbsd.sh \ ${GENSCRIPTS} elf64_sparc_fbsd "$(tdir_elf64_sparc_fbsd)" eelf64_sparc_sol2.c: $(srcdir)/emulparams/elf64_sparc_sol2.sh \ $(srcdir)/emulparams/elf64_sparc.sh \ + $(srcdir)/emulparams/solaris2.sh \ $(srcdir)/emultempl/solaris2.em \ $(ELF_DEPS) $(srcdir)/scripttempl/elf.sc ${GEN_DEPENDS} ${GENSCRIPTS} elf64_sparc_sol2 "$(tdir_elf64_sparc_sol2)" @@ -2508,6 +2510,7 @@ eelf_x86_64_fbsd.c: $(srcdir)/emulparams/elf_x86_64_fbsd.sh \ ${GENSCRIPTS} elf_x86_64_fbsd "$(tdir_elf_x86_64_fbsd)" eelf_x86_64_sol2.c: $(srcdir)/emulparams/elf_x86_64_sol2.sh \ $(srcdir)/emulparams/elf_x86_64.sh \ + $(srcdir)/emulparams/solaris2.sh \ $(srcdir)/emultempl/solaris2.em \ $(ELF_DEPS) $(srcdir)/scripttempl/elf.sc ${GEN_DEPENDS} ${GENSCRIPTS} elf_x86_64_sol2 "$(tdir_elf_x86_64_sol2)" @@ -2532,6 +2535,7 @@ eelf_i386_ldso.c: $(srcdir)/emulparams/elf_i386_ldso.sh \ $(ELF_DEPS) $(srcdir)/scripttempl/elf.sc ${GEN_DEPENDS} ${GENSCRIPTS} elf_i386_ldso "$(tdir_elf_i386_ldso)" eelf_i386_sol2.c: $(srcdir)/emulparams/elf_i386_sol2.sh \ + $(srcdir)/emulparams/solaris2.sh \ $(srcdir)/emultempl/solaris2.em \ $(ELF_DEPS) $(srcdir)/scripttempl/elf.sc ${GEN_DEPENDS} ${GENSCRIPTS} elf_i386_sol2 "$(tdir_elf_i386_sol2)" diff --git a/ld/emulparams/elf32_sparc_sol2.sh b/ld/emulparams/elf32_sparc_sol2.sh index efced57..8fab990 100644 --- a/ld/emulparams/elf32_sparc_sol2.sh +++ b/ld/emulparams/elf32_sparc_sol2.sh @@ -1,2 +1,3 @@ . ${srcdir}/emulparams/elf32_sparc.sh +. ${srcdir}/emulparams/solaris2.sh EXTRA_EM_FILE=solaris2 diff --git a/ld/emulparams/elf64_sparc_sol2.sh b/ld/emulparams/elf64_sparc_sol2.sh index 3189b3f..3bf09f6 100644 --- a/ld/emulparams/elf64_sparc_sol2.sh +++ b/ld/emulparams/elf64_sparc_sol2.sh @@ -1,2 +1,3 @@ . ${srcdir}/emulparams/elf64_sparc.sh +. ${srcdir}/emulparams/solaris2.sh EXTRA_EM_FILE=solaris2 diff --git a/ld/emulparams/elf_i386_sol2.sh b/ld/emulparams/elf_i386_sol2.sh index 773f3d2..7c18fc6 100644 --- a/ld/emulparams/elf_i386_sol2.sh +++ b/ld/emulparams/elf_i386_sol2.sh @@ -1,3 +1,4 @@ . ${srcdir}/emulparams/elf_i386_ldso.sh +. ${srcdir}/emulparams/solaris2.sh EXTRA_EM_FILE=solaris2 OUTPUT_FORMAT="elf32-i386-sol2" diff --git a/ld/emulparams/elf_x86_64_sol2.sh b/ld/emulparams/elf_x86_64_sol2.sh index e70d592..993f458 100644 --- a/ld/emulparams/elf_x86_64_sol2.sh +++ b/ld/emulparams/elf_x86_64_sol2.sh @@ -1,3 +1,4 @@ . ${srcdir}/emulparams/elf_x86_64.sh +. ${srcdir}/emulparams/solaris2.sh EXTRA_EM_FILE=solaris2 OUTPUT_FORMAT="elf64-x86-64-sol2" diff --git a/ld/emulparams/solaris2.sh b/ld/emulparams/solaris2.sh new file mode 100644 index 0000000..dabbb05 --- /dev/null +++ b/ld/emulparams/solaris2.sh @@ -0,0 +1,10 @@ +# If you change this file, please also look at files which source this one: +# elf32_sparc_sol2.sh, elf64_sparc_sol2.sh, elf_i386_sol2.sh, +# elf_x86_64_sol2.sh. + +# The Solaris 2 ABI requires that two local symbols are present in every +# executable and shared object. +# Cf. Linker and Libraries Guide, Ch. 2, Link-Editor, Generating the Output +# File, p.63. +TEXT_START_SYMBOLS='_START_ = .;' +OTHER_END_SYMBOLS='_END_ = .;' diff --git a/ld/emultempl/solaris2.em b/ld/emultempl/solaris2.em index aa578d2..0b77375 100644 --- a/ld/emultempl/solaris2.em +++ b/ld/emultempl/solaris2.em @@ -31,16 +31,17 @@ fragment <<EOF #define TARGET_IS_${EMULATION_NAME} -/* The Solaris 2 ABI requires some symbols to always be bound to the base - version in a shared object. +/* The Solaris 2 ABI requires some global symbols to be present in the + .dynsym table of executables and shared objects. If generating a + versioned shared object, they must always be bound to the base version. Cf. Linker and Libraries Guide, Ch. 2, Link-Editor, Generating the Output File, p.63. */ static void elf_solaris2_before_allocation (void) { - /* Symbols required to be bound to the base version. */ - static const char *basever_syms[] = { + /* Global symbols required by the Solaris 2 ABI. */ + static const char *global_syms[] = { "_DYNAMIC", "_GLOBAL_OFFSET_TABLE_", "_PROCEDURE_LINKAGE_TABLE_", @@ -51,6 +52,28 @@ elf_solaris2_before_allocation (void) }; const char **sym; + /* Do this for both executables and shared objects. */ + if (!link_info.relocatable) + { + for (sym = global_syms; *sym != NULL; sym++) + { + struct elf_link_hash_entry *h; + + /* Lookup symbol. */ + h = elf_link_hash_lookup (elf_hash_table (&link_info), *sym, + FALSE, FALSE, FALSE); + if (h == NULL) + continue; + + /* Undo the hiding done by _bfd_elf_define_linkage_sym. */ + h->forced_local = 0; + h->other &= ~STV_HIDDEN; + + /* Emit it into the .dynamic section, too. */ + bfd_elf_link_record_dynamic_symbol (&link_info, h); + } + } + /* Only do this if emitting a shared object and versioning is in place. */ if (link_info.shared && (lang_elf_version_info != NULL || link_info.create_default_symver)) @@ -59,7 +82,7 @@ elf_solaris2_before_allocation (void) struct bfd_elf_version_tree *basever; const char *soname; - for (sym = basever_syms; *sym != NULL; sym++) + for (sym = global_syms; *sym != NULL; sym++) { /* Create a version pattern for this symbol. Some of them start off as local, others as global, so try both. */ @@ -80,8 +103,32 @@ elf_solaris2_before_allocation (void) lang_register_vers_node (soname, basever, NULL); /* Enforce base version. The encoded vd_ndx is vernum + 1. */ basever->vernum = 0; + } - for (sym = basever_syms; *sym != NULL; sym++) + gld${EMULATION_NAME}_before_allocation (); +} + +/* The Solaris 2 ABI requires two local symbols to be emitted for every + executable and shared object. + + Cf. Linker and Libraries Guide, Ch. 2, Link-Editor, Generating the Output + File, p.63. */ +static void +elf_solaris2_after_allocation (void) +{ + /* Local symbols required by the Solaris 2 ABI. Already emitted by + emulparams/solaris2.sh. */ + static const char *local_syms[] = { + "_START_", + "_END_", + NULL + }; + const char **sym; + + /* Do this for both executables and shared objects. */ + if (!link_info.relocatable) + { + for (sym = local_syms; *sym != NULL; sym++) { struct elf_link_hash_entry *h; @@ -91,18 +138,17 @@ elf_solaris2_before_allocation (void) if (h == NULL) continue; - /* Undo the hiding done by _bfd_elf_define_linkage_sym. */ - h->forced_local = 0; - h->other &= ~STV_HIDDEN; - - /* Emit it into the .dynamic section, too. */ - bfd_elf_link_record_dynamic_symbol (&link_info, h); + /* Turn it local. */ + h->forced_local = 1; + /* Type should be STT_OBJECT, not STT_NOTYPE. */ + h->type = STT_OBJECT; } } - gld${EMULATION_NAME}_before_allocation (); + gld${EMULATION_NAME}_after_allocation (); } EOF LDEMUL_BEFORE_ALLOCATION=elf_solaris2_before_allocation +LDEMUL_AFTER_ALLOCATION=elf_solaris2_after_allocation |