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author | Rainer Orth <ro@TechFak.Uni-Bielefeld.DE> | 2010-10-12 18:39:36 +0000 |
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committer | Rainer Orth <ro@TechFak.Uni-Bielefeld.DE> | 2010-10-12 18:39:36 +0000 |
commit | 18a1a992e09a0c3bfc61e6deb828d60a97b92b88 (patch) | |
tree | b8e7d007d83fa3f356038ad017d449e314dd4df2 /ld/emultempl | |
parent | d8b34041e09e904a242f922f3f09d2837399e415 (diff) | |
download | gdb-18a1a992e09a0c3bfc61e6deb828d60a97b92b88.zip gdb-18a1a992e09a0c3bfc61e6deb828d60a97b92b88.tar.gz gdb-18a1a992e09a0c3bfc61e6deb828d60a97b92b88.tar.bz2 |
* 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
$(srcdir)/emulparams/solaris2.sh.
(eelf64_sparc_sol2.c): Likewise.
(eelf_x86_64_sol2.c): Likewise.
(eelf_i386_sol2.c): Likewise.
* Makefile.in: Regenerate.
Diffstat (limited to 'ld/emultempl')
-rw-r--r-- | ld/emultempl/solaris2.em | 72 |
1 files changed, 59 insertions, 13 deletions
diff --git a/ld/emultempl/solaris2.em b/ld/emultempl/solaris2.em index aa578d2..0b77375 100644 --- a/ld/emultempl/solaris2.em +++ b/ld/emultempl/solaris2.em @@ -31,16 +31,17 @@ fragment <<EOF #define TARGET_IS_${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 |