From: Ian Lance Taylor Date: Sat, 15 Mar 1997 23:17:46 +0000 (+0000) Subject: Sat Mar 15 18:10:38 1997 H.J. Lu X-Git-Tag: gdb-4_18~6144 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=c5a0d31a042f0ea10c330a3c0da6b7541efd7bbc;p=external%2Fbinutils.git Sat Mar 15 18:10:38 1997 H.J. Lu * ldemul.h (ldemul_list_emulations): Use full prototype. * ldlang.c (print_one_symbol): Add declaration. * ldlang.h (dprint_statements): Declare. * ldmain.c (remove_output): Declare. * ldmisc.c (vfinfo): Declare. * ldwrite.c (clone_section): Declare. (split_sections): Make static. Declare. * mri.c: Include libiberty.h. (strdup): Don't declare. (mri_alias): Use xstrdup rather than strdup. --- diff --git a/ld/ChangeLog b/ld/ChangeLog index 3ccd300..ab7a48a 100644 --- a/ld/ChangeLog +++ b/ld/ChangeLog @@ -1,3 +1,16 @@ +Sat Mar 15 18:10:38 1997 H.J. Lu + + * ldemul.h (ldemul_list_emulations): Use full prototype. + * ldlang.c (print_one_symbol): Add declaration. + * ldlang.h (dprint_statements): Declare. + * ldmain.c (remove_output): Declare. + * ldmisc.c (vfinfo): Declare. + * ldwrite.c (clone_section): Declare. + (split_sections): Make static. Declare. + * mri.c: Include libiberty.h. + (strdup): Don't declare. + (mri_alias): Use xstrdup rather than strdup. + Fri Mar 14 21:30:06 1997 Ian Lance Taylor * scripttempl/elfmips.sc: Change handling of data area when diff --git a/ld/ldlang.c b/ld/ldlang.c index 3656a8a..aaf09e2 100644 --- a/ld/ldlang.c +++ b/ld/ldlang.c @@ -1,5 +1,5 @@ /* Linker command language support. - Copyright (C) 1991, 92, 93, 94, 95, 1996 Free Software Foundation, Inc. + Copyright (C) 1991, 92, 93, 94, 95, 96, 1997 Free Software Foundation, Inc. This file is part of GLD, the Gnu Linker. @@ -101,6 +101,7 @@ static void print_assignment PARAMS ((lang_assignment_statement_type *assignment, lang_output_section_statement_type *output_section)); static void print_input_statement PARAMS ((lang_input_statement_type *statm)); +static boolean print_one_symbol PARAMS ((struct bfd_link_hash_entry *, PTR)); static void print_input_section PARAMS ((lang_input_section_type *in)); static void print_fill_statement PARAMS ((lang_fill_statement_type *fill)); static void print_data_statement PARAMS ((lang_data_statement_type *data)); @@ -647,11 +648,12 @@ exp_init_os (exp) /*ARGSUSED*/ static void -section_already_linked (abfd, sec, ignore) +section_already_linked (abfd, sec, data) bfd *abfd; asection *sec; - PTR ignore; + PTR data; { + lang_input_statement_type *entry = (lang_input_statement_type *) data; struct sec_link_once { struct sec_link_once *next; @@ -662,6 +664,15 @@ section_already_linked (abfd, sec, ignore) const char *name; struct sec_link_once *l; + /* If we are only reading symbols from this object, then we want to + discard all sections. */ + if (entry->just_syms_flag) + { + sec->output_section = bfd_abs_section_ptr; + sec->output_offset = sec->vma; + return; + } + flags = bfd_get_section_flags (abfd, sec); if ((flags & SEC_LINK_ONCE) == 0) @@ -2064,7 +2075,15 @@ lang_size_sections (s, output_section_statement, prev, fill, dot, relax) } dot = os->region->current; if (os->section_alignment == -1) - dot = align_power (dot, os->bfd_section->alignment_power); + { + bfd_vma olddot; + + olddot = dot; + dot = align_power (dot, os->bfd_section->alignment_power); + if (dot != olddot && config.warn_section_align) + einfo ("%P: warning: changing start of section %s by %u bytes\n", + os->name, (unsigned int) (dot - olddot)); + } } else { @@ -2669,8 +2688,10 @@ lang_one_common (h, info) /* Increase the size of the section. */ section->_raw_size += size; - /* Make sure the section is allocated in memory. */ + /* Make sure the section is allocated in memory, and make sure that + it is no longer a common section. */ section->flags |= SEC_ALLOC; + section->flags &= ~ SEC_IS_COMMON; if (config.map_file != NULL) { @@ -2928,7 +2949,7 @@ ldlang_add_file (entry) each backend which might set the SEC_LINK_ONCE flag. If we do this, we should probably handle SEC_EXCLUDE in the same way. */ - bfd_map_over_sections (entry->the_bfd, section_already_linked, (PTR) NULL); + bfd_map_over_sections (entry->the_bfd, section_already_linked, (PTR) entry); } void @@ -3519,7 +3540,7 @@ lang_record_phdrs () lang_statement_union_type *u; alc = 10; - secs = xmalloc (alc * sizeof (asection *)); + secs = (asection **) xmalloc (alc * sizeof (asection *)); last = NULL; for (l = lang_phdr_list; l != NULL; l = l->next) { @@ -3559,7 +3580,8 @@ lang_record_phdrs () if (c >= alc) { alc *= 2; - secs = xrealloc (secs, alc * sizeof (asection *)); + secs = ((asection **) + xrealloc (secs, alc * sizeof (asection *))); } secs[c] = os->bfd_section; ++c; @@ -3634,6 +3656,9 @@ static etree_type *overlay_vma; /* The overlay load address. */ static etree_type *overlay_lma; +/* Whether nocrossrefs is set for this overlay. */ +static int overlay_nocrossrefs; + /* An expression for the maximum section size seen so far. */ static etree_type *overlay_max; @@ -3650,9 +3675,10 @@ static struct overlay_list *overlay_list; /* Start handling an overlay. */ void -lang_enter_overlay (vma_expr, lma_expr) +lang_enter_overlay (vma_expr, lma_expr, nocrossrefs) etree_type *vma_expr; etree_type *lma_expr; + int nocrossrefs; { /* The grammar should prevent nested overlays from occurring. */ ASSERT (overlay_vma == NULL @@ -3662,6 +3688,7 @@ lang_enter_overlay (vma_expr, lma_expr) overlay_vma = vma_expr; overlay_lma = lma_expr; + overlay_nocrossrefs = nocrossrefs; } /* Start a section in an overlay. We handle this by calling @@ -3768,7 +3795,6 @@ lang_leave_overlay (fill, memspec, phdrs) l = overlay_list; while (l != NULL) { - struct lang_nocrossref *nc; struct overlay_list *next; if (fill != 0 && l->os->fill == 0) @@ -3778,10 +3804,15 @@ lang_leave_overlay (fill, memspec, phdrs) if (phdrs != NULL && l->os->phdrs == NULL) l->os->phdrs = phdrs; - nc = (struct lang_nocrossref *) xmalloc (sizeof *nc); - nc->name = l->os->name; - nc->next = nocrossref; - nocrossref = nc; + if (overlay_nocrossrefs) + { + struct lang_nocrossref *nc; + + nc = (struct lang_nocrossref *) xmalloc (sizeof *nc); + nc->name = l->os->name; + nc->next = nocrossref; + nocrossref = nc; + } next = l->next; free (l); @@ -3797,6 +3828,147 @@ lang_leave_overlay (fill, memspec, phdrs) overlay_vma = NULL; overlay_lma = NULL; + overlay_nocrossrefs = 0; overlay_list = NULL; overlay_max = NULL; } + +/* Version handling. This is only useful for ELF. */ + +/* This global variable holds the version tree that we build. */ + +struct bfd_elf_version_tree *lang_elf_version_info; + +/* This is called for each variable name or match expression. */ + +struct bfd_elf_version_expr * +lang_new_vers_regex (orig, new) + struct bfd_elf_version_expr *orig; + const char *new; +{ + struct bfd_elf_version_expr *ret; + + ret = (struct bfd_elf_version_expr *) xmalloc (sizeof *ret); + ret->next = orig; + ret->match = new; + return ret; +} + +/* This is called for each set of variable names and match + expressions. */ + +struct bfd_elf_version_tree * +lang_new_vers_node (globals, locals) + struct bfd_elf_version_expr *globals; + struct bfd_elf_version_expr *locals; +{ + struct bfd_elf_version_tree *ret; + + ret = (struct bfd_elf_version_tree *) xmalloc (sizeof *ret); + ret->next = NULL; + ret->name = NULL; + ret->vernum = 0; + ret->globals = globals; + ret->locals = locals; + ret->deps = NULL; + ret->name_indx = (unsigned int) -1; + ret->used = 0; + return ret; +} + +/* This static variable keeps track of version indices. */ + +static int version_index; + +/* This is called when we know the name and dependencies of the + version. */ + +void +lang_register_vers_node (name, version, deps) + const char *name; + struct bfd_elf_version_tree *version; + struct bfd_elf_version_deps *deps; +{ + struct bfd_elf_version_tree *t, **pp; + struct bfd_elf_version_expr *e1; + + /* Make sure this node has a unique name. */ + for (t = lang_elf_version_info; t != NULL; t = t->next) + if (strcmp (t->name, name) == 0) + einfo ("%X%P: duplicate version tag `%s'\n", name); + + /* Check the global and local match names, and make sure there + aren't any duplicates. */ + + for (e1 = version->globals; e1 != NULL; e1 = e1->next) + { + for (t = lang_elf_version_info; t != NULL; t = t->next) + { + struct bfd_elf_version_expr *e2; + + for (e2 = t->globals; e2 != NULL; e2 = e2->next) + if (strcmp (e1->match, e2->match) == 0) + einfo ("%X%P: duplicate expression `%s' in version information\n", + e1->match); + + for (e2 = t->locals; e2 != NULL; e2 = e2->next) + if (strcmp (e1->match, e2->match) == 0) + einfo ("%X%P: duplicate expression `%s' in version information\n", + e1->match); + } + } + + for (e1 = version->locals; e1 != NULL; e1 = e1->next) + { + for (t = lang_elf_version_info; t != NULL; t = t->next) + { + struct bfd_elf_version_expr *e2; + + for (e2 = t->globals; e2 != NULL; e2 = e2->next) + if (strcmp (e1->match, e2->match) == 0) + einfo ("%X%P: duplicate expression `%s' in version information\n", + e1->match); + + for (e2 = t->locals; e2 != NULL; e2 = e2->next) + if (strcmp (e1->match, e2->match) == 0) + einfo ("%X%P: duplicate expression `%s' in version information\n", + e1->match); + } + } + + version->deps = deps; + version->name = name; + ++version_index; + version->vernum = version_index; + + for (pp = &lang_elf_version_info; *pp != NULL; pp = &(*pp)->next) + ; + *pp = version; +} + +/* This is called when we see a version dependency. */ + +struct bfd_elf_version_deps * +lang_add_vers_depend (list, name) + struct bfd_elf_version_deps *list; + const char *name; +{ + struct bfd_elf_version_deps *ret; + struct bfd_elf_version_tree *t; + + ret = (struct bfd_elf_version_deps *) xmalloc (sizeof *ret); + ret->next = list; + + for (t = lang_elf_version_info; t != NULL; t = t->next) + { + if (strcmp (t->name, name) == 0) + { + ret->version_needed = t; + return ret; + } + } + + einfo ("%X%P: unable to find version dependency `%s'\n", name); + + return ret; +}