From: Ian Lance Taylor Date: Fri, 27 Oct 1995 22:21:43 +0000 (+0000) Subject: * emultempl/aix.em: Include ldctor.h. X-Git-Url: http://drtracing.org/?a=commitdiff_plain;ds=sidebyside;h=cf79773cb15480249935afb17a25f847550570b7;hp=2d7de17d6167ef2c7240a6886541a9e0031ed798;p=deliverable%2Fbinutils-gdb.git * emultempl/aix.em: Include ldctor.h. (gld${EMULATION_NAME}_after_open): New static function. (gld${EMULATION_NAME}_before_allocation): Call find_relocs. (gld${EMULATION_NAME}_find_relocs): New static function. (gld${EMULATION_NAME}_find_exp_assignment): New static function. (ld_${EMULATION_NAME}_emulation): Use new after_open function. * scripttempl/aix.sc: Use CONSTRUCTORS in .data. * ldctor.c (struct set_info): Move definition into ldctor.h. (struct set_element): Likewise. (sets): Make non-static. (ldctor_add_set_entry): Add name parameter. Save it in the new set element. (ldctor_build_sets): Avoid being called twice. Pass set element name to lang_add_reloc. * ldctor.h (struct set_info): Move definition here from ldctor.c. (struct set_element): Likewise. Add new field name. (sets): Declare. (ldctor_add_set_entry): Declare new name parameter. * ldwrite.c (build_link_order): Don't insist that either name or section be NULL in a lang_reloc_statement. * ldmain.c (add_to_set): Pass NULL to ldctor_add_new_set_entry for new name parameter. (constructor_callback): Pass name to ldctor_add_new_set_entry for new name parameter. --- diff --git a/ld/ChangeLog b/ld/ChangeLog index 3394814986..72c2a7ba04 100644 --- a/ld/ChangeLog +++ b/ld/ChangeLog @@ -1,3 +1,32 @@ +Fri Oct 27 17:59:09 1995 Ian Lance Taylor + + * emultempl/aix.em: Include ldctor.h. + (gld${EMULATION_NAME}_after_open): New static function. + (gld${EMULATION_NAME}_before_allocation): Call find_relocs. + (gld${EMULATION_NAME}_find_relocs): New static function. + (gld${EMULATION_NAME}_find_exp_assignment): New static function. + (ld_${EMULATION_NAME}_emulation): Use new after_open function. + * scripttempl/aix.sc: Use CONSTRUCTORS in .data. + * ldctor.c (struct set_info): Move definition into ldctor.h. + (struct set_element): Likewise. + (sets): Make non-static. + (ldctor_add_set_entry): Add name parameter. Save it in the new + set element. + (ldctor_build_sets): Avoid being called twice. Pass set element + name to lang_add_reloc. + * ldctor.h (struct set_info): Move definition here from ldctor.c. + (struct set_element): Likewise. Add new field name. + (sets): Declare. + (ldctor_add_set_entry): Declare new name parameter. + * ldwrite.c (build_link_order): Don't insist that either name or + section be NULL in a lang_reloc_statement. + * ldmain.c (add_to_set): Pass NULL to ldctor_add_new_set_entry for + new name parameter. + (constructor_callback): Pass name to ldctor_add_new_set_entry for + new name parameter. + + * ldmisc.c (demangle): Fix indentation. Remove a leading period. + Thu Oct 26 22:22:49 1995 Stan Shebs * mpw-config.in: Add PowerMac target support, generate config.h. diff --git a/ld/emultempl/aix.em b/ld/emultempl/aix.em index 08c79b20f6..f234dd2d42 100644 --- a/ld/emultempl/aix.em +++ b/ld/emultempl/aix.em @@ -41,12 +41,17 @@ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ #include "ldmisc.h" #include "ldexp.h" #include "ldlang.h" +#include "ldctor.h" static void gld${EMULATION_NAME}_before_parse PARAMS ((void)); static int gld${EMULATION_NAME}_parse_args PARAMS ((int, char **)); +static void gld${EMULATION_NAME}_after_open PARAMS ((void)); static void gld${EMULATION_NAME}_before_allocation PARAMS ((void)); static void gld${EMULATION_NAME}_read_file PARAMS ((const char *, boolean)); static void gld${EMULATION_NAME}_free PARAMS ((PTR)); +static void gld${EMULATION_NAME}_find_relocs + PARAMS ((lang_statement_union_type *)); +static void gld${EMULATION_NAME}_find_exp_assignment PARAMS ((etree_type *)); static char *gld${EMULATION_NAME}_get_script PARAMS ((int *isfile)); /* The file alignment required for each section. */ @@ -313,6 +318,48 @@ gld${EMULATION_NAME}_parse_args (argc, argv) return 1; } +/* This is called after the input files have been opened. */ + +static void +gld${EMULATION_NAME}_after_open () +{ + boolean r; + struct set_info *p; + + /* Call ldctor_build_sets, after pretending that this is a + relocateable link. We do this because AIX requires relocation + entries for all references to symbols, even in a final + executable. */ + r = link_info.relocateable; + link_info.relocateable = true; + ldctor_build_sets (); + link_info.relocateable = r; + + /* For each set, record the size, so that the XCOFF backend can + output the correct csect length. */ + for (p = sets; p != (struct set_info *) NULL; p = p->next) + { + bfd_size_type size; + + /* If the symbol is defined, we may have been invoked from + collect, and the sets may already have been built, so we do + not do anything. */ + if (p->h->type == bfd_link_hash_defined + || p->h->type == bfd_link_hash_defweak) + continue; + + if (p->reloc != BFD_RELOC_CTOR) + { + /* Handle this if we need to. */ + abort (); + } + + size = (p->count + 2) * 4; + if (! bfd_xcoff_link_record_set (output_bfd, &link_info, p->h, size)) + einfo ("%F%P: bfd_xcoff_link_record_set failed: %E\n"); + } +} + /* This is called after the sections have been attached to output sections, but before any sizes or addresses have been set. */ @@ -328,6 +375,12 @@ gld${EMULATION_NAME}_before_allocation () for (fl = export_files; fl != NULL; fl = fl->next) gld${EMULATION_NAME}_read_file (fl->name, false); + /* Track down all relocations called for by the linker script (these + are typically constructor/destructor entries created by + CONSTRUCTORS) and let the backend know it will need to create + .loader relocs for them. */ + lang_for_each_statement (gld${EMULATION_NAME}_find_relocs); + /* We need to build LIBPATH from the -L arguments. If any -rpath arguments were used, though, we use -rpath instead, as a GNU extension. */ @@ -592,6 +645,76 @@ gld${EMULATION_NAME}_free (p) free (p); } +/* This is called by the before_allocation routine via + lang_for_each_statement. It looks for relocations and assignments + to symbols. */ + +static void +gld${EMULATION_NAME}_find_relocs (s) + lang_statement_union_type *s; +{ + if (s->header.type == lang_reloc_statement_enum) + { + lang_reloc_statement_type *rs; + + rs = &s->reloc_statement; + if (rs->name == NULL) + einfo ("%F%P: only relocations against symbols are permitted\n"); + if (! bfd_xcoff_link_count_reloc (output_bfd, &link_info, rs->name)) + einfo ("%F%P: bfd_xcoff_link_count_reloc failed: %E\n"); + } + + if (s->header.type == lang_assignment_statement_enum) + gld${EMULATION_NAME}_find_exp_assignment (s->assignment_statement.exp); +} + +/* Look through an expression for an assignment statement. */ + +static void +gld${EMULATION_NAME}_find_exp_assignment (exp) + etree_type *exp; +{ + struct bfd_link_hash_entry *h; + + switch (exp->type.node_class) + { + case etree_provide: + h = bfd_link_hash_lookup (link_info.hash, exp->assign.dst, + false, false, false); + if (h == NULL) + break; + /* Fall through. */ + case etree_assign: + if (strcmp (exp->assign.dst, ".") != 0) + { + if (! bfd_xcoff_record_link_assignment (output_bfd, &link_info, + exp->assign.dst)) + einfo ("%P%F: failed to record assignment to %s: %E\n", + exp->assign.dst); + } + gld${EMULATION_NAME}_find_exp_assignment (exp->assign.src); + break; + + case etree_binary: + gld${EMULATION_NAME}_find_exp_assignment (exp->binary.lhs); + gld${EMULATION_NAME}_find_exp_assignment (exp->binary.rhs); + break; + + case etree_trinary: + gld${EMULATION_NAME}_find_exp_assignment (exp->trinary.cond); + gld${EMULATION_NAME}_find_exp_assignment (exp->trinary.lhs); + gld${EMULATION_NAME}_find_exp_assignment (exp->trinary.rhs); + break; + + case etree_unary: + gld${EMULATION_NAME}_find_exp_assignment (exp->unary.child); + break; + + default: + break; + } +} + static char * gld${EMULATION_NAME}_get_script(isfile) int *isfile; @@ -652,7 +775,7 @@ struct ld_emulation_xfer_struct ld_${EMULATION_NAME}_emulation = syslib_default, hll_default, after_parse_default, - after_open_default, + gld${EMULATION_NAME}_after_open, after_allocation_default, set_output_arch_default, ldemul_default_target,