* config/obj-elf.c: (obj_elf_change_section): Add "group" param.
Set elf_section_data group from it. Warn if group name changed. (obj_elf_parse_section_letters): Parse 'G' too. (obj_elf_section): Parse group name. (struct group_list): New. (build_group_lists): New function. (elf_frob_file): Create SEC_GROUP section(s). * config/obj-elf.c: (elf_copy_symbol_attributes): Zap trailing whitespace.
This commit is contained in:
Alan Modra
parent
dbb410c3e2
commit
060adf0e2f
2 changed files with 160 additions and 24 deletions
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@ -1,3 +1,16 @@
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2001-10-09 Alan Modra <amodra@bigpond.net.au>
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* config/obj-elf.c: (obj_elf_change_section): Add "group" param.
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Set elf_section_data group from it. Warn if group name changed.
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(obj_elf_parse_section_letters): Parse 'G' too.
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(obj_elf_section): Parse group name.
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(struct group_list): New.
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(build_group_lists): New function.
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(elf_frob_file): Create SEC_GROUP section(s).
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* config/obj-elf.c: (elf_copy_symbol_attributes): Zap trailing
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whitespace.
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2001-10-08 Aldy Hernandez <aldyh@redhat.com>
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* doc/arm/c-arm.texi (ARM Options): Add arm9e documentation.
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@ -58,6 +58,7 @@ static void elf_s_set_align PARAMS ((symbolS *, bfd_vma));
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static void elf_s_set_other PARAMS ((symbolS *, int));
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static int elf_sec_sym_ok_for_reloc PARAMS ((asection *));
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static void adjust_stab_sections PARAMS ((bfd *, asection *, PTR));
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static void build_group_lists PARAMS ((bfd *, asection *, PTR));
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static int elf_separate_stab_sections PARAMS ((void));
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static void elf_init_stab_section PARAMS ((segT));
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@ -74,7 +75,8 @@ static void obj_elf_ident PARAMS ((int));
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static void obj_elf_weak PARAMS ((int));
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static void obj_elf_local PARAMS ((int));
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static void obj_elf_visibility PARAMS ((int));
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static void obj_elf_change_section PARAMS ((char *, int, int, int, int));
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static void obj_elf_change_section
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PARAMS ((const char *, int, int, int, const char *, int));
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static int obj_elf_parse_section_letters PARAMS ((char *, size_t));
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static int obj_elf_section_word PARAMS ((char *, size_t));
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static char *obj_elf_section_name PARAMS ((void));
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@ -618,9 +620,13 @@ static struct special_section const special_sections[] =
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};
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static void
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obj_elf_change_section (name, type, attr, entsize, push)
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char *name;
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int type, attr, entsize, push;
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obj_elf_change_section (name, type, attr, entsize, group, push)
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const char *name;
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int type;
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int attr;
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int entsize;
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const char *group;
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int push;
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{
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asection *old_sec;
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segT sec;
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@ -706,6 +712,7 @@ obj_elf_change_section (name, type, attr, entsize, push)
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bfd_set_section_flags (stdoutput, sec, flags);
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if (flags & SEC_MERGE)
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sec->entsize = entsize;
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elf_section_data (sec)->group = group;
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/* Add a symbol for this section to the symbol table. */
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secsym = symbol_find (name);
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@ -725,6 +732,9 @@ obj_elf_change_section (name, type, attr, entsize, push)
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as_warn (_("ignoring changed section attributes for %s"), name);
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else if ((flags & SEC_MERGE) && old_sec->entsize != (unsigned) entsize)
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as_warn (_("ignoring changed section entity size for %s"), name);
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else if ((attr & SHF_GROUP) != 0
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&& strcmp (elf_section_data (old_sec)->group, group) != 0)
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as_warn (_("ignoring new section group for %s"), name);
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}
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#ifdef md_elf_section_change_hook
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@ -758,6 +768,9 @@ obj_elf_parse_section_letters (str, len)
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case 'S':
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attr |= SHF_STRINGS;
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break;
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case 'G':
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attr |= SHF_GROUP;
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break;
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/* Compatibility. */
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case 'm':
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if (*(str - 1) == 'a')
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@ -772,7 +785,7 @@ obj_elf_parse_section_letters (str, len)
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}
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default:
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{
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char *bad_msg = _("unrecognized .section attribute: want a,w,x,M,S");
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char *bad_msg = _("unrecognized .section attribute: want a,w,x,M,S,G");
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#ifdef md_elf_section_letter
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int md_attr = md_elf_section_letter (*str, &bad_msg);
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if (md_attr >= 0)
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@ -882,7 +895,7 @@ void
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obj_elf_section (push)
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int push;
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{
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char *name, *beg;
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char *name, *group, *beg;
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int type, attr, dummy;
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int entsize;
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@ -913,6 +926,7 @@ obj_elf_section (push)
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return;
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type = SHT_NULL;
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attr = 0;
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group = NULL;
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entsize = 0;
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if (*input_line_pointer == ',')
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@ -935,6 +949,8 @@ obj_elf_section (push)
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if (*input_line_pointer == ',')
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{
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char c;
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char *save = input_line_pointer;
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++input_line_pointer;
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SKIP_WHITESPACE ();
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c = *input_line_pointer;
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@ -955,6 +971,8 @@ obj_elf_section (push)
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*input_line_pointer = c;
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type = obj_elf_section_type (beg, input_line_pointer - beg);
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}
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else
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input_line_pointer = save;
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}
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SKIP_WHITESPACE ();
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@ -976,6 +994,19 @@ obj_elf_section (push)
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as_warn (_("entity size for SHF_MERGE not specified"));
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attr &= ~SHF_MERGE;
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}
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if ((attr & SHF_GROUP) != 0 && *input_line_pointer == ',')
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{
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++input_line_pointer;
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group = obj_elf_section_name ();
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if (group == NULL)
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attr &= ~SHF_GROUP;
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}
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else if ((attr & SHF_GROUP) != 0)
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{
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as_warn (_("group name for SHF_GROUP not specified"));
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attr &= ~SHF_GROUP;
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}
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}
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else
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{
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@ -1005,7 +1036,7 @@ obj_elf_section (push)
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demand_empty_rest_of_line ();
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obj_elf_change_section (name, type, attr, entsize, push);
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obj_elf_change_section (name, type, attr, entsize, group, push);
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}
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/* Change to the .data section. */
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@ -1860,11 +1891,103 @@ elf_frob_symbol (symp, puntp)
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#endif
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}
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struct group_list
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{
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asection **head; /* Section lists. */
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unsigned int *elt_count; /* Number of sections in each list. */
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unsigned int num_group; /* Number of lists. */
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};
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/* Called via bfd_map_over_sections. If SEC is a member of a group,
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add it to a list of sections belonging to the group. INF is a
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pointer to a struct group_list, which is where we store the head of
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each list. */
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static void
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build_group_lists (abfd, sec, inf)
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bfd *abfd ATTRIBUTE_UNUSED;
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asection *sec;
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PTR inf;
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{
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struct group_list *list = (struct group_list *) inf;
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const char *group_name = elf_section_data (sec)->group;
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unsigned int i;
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if (group_name == NULL)
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return;
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/* If this group already has a list, add the section to the head of
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the list. */
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for (i = 0; i < list->num_group; i++)
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{
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if (strcmp (group_name, elf_section_data (list->head[i])->group) == 0)
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{
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elf_section_data (sec)->next_in_group = list->head[i];
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list->head[i] = sec;
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list->elt_count[i] += 1;
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return;
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}
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}
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/* New group. Make the arrays bigger in chunks to minimize calls to
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realloc. */
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i = list->num_group;
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if ((i & 127) == 0)
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{
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unsigned int newsize = i + 128;
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list->head = xrealloc (list->head, newsize * sizeof (*list->head));
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list->elt_count = xrealloc (list->elt_count,
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newsize * sizeof (*list->elt_count));
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}
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list->head[i] = sec;
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list->elt_count[i] = 1;
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list->num_group += 1;
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}
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void
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elf_frob_file ()
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{
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struct group_list list;
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unsigned int i;
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bfd_map_over_sections (stdoutput, adjust_stab_sections, (PTR) 0);
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/* Go find section groups. */
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list.num_group = 0;
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list.head = NULL;
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list.elt_count = NULL;
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bfd_map_over_sections (stdoutput, build_group_lists, (PTR) &list);
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/* Make the SHT_GROUP sections that describe each section group. We
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can't set up the section contents here yet, because elf section
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indices have yet to be calculated. elf.c:set_group_contents does
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the rest of the work. */
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for (i = 0; i < list.num_group; i++)
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{
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const char *group_name = elf_section_data (list.head[i])->group;
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asection *s;
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flagword flags;
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s = subseg_force_new (group_name, 0);
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flags = SEC_READONLY | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_GROUP;
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if (s == NULL
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|| !bfd_set_section_flags (stdoutput, s, flags)
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|| !bfd_set_section_alignment (stdoutput, s, 2))
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{
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as_fatal (_("can't create group: %s"),
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bfd_errmsg (bfd_get_error ()));
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}
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/* Pass a pointer to the first section in this group. This
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seems as good a field to use as any; It's not used otherwise
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by the ELF code. */
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s->lineno = (alent *) list.head[i];
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s->_raw_size = 4 * (list.elt_count[i] + 1);
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s->contents = frag_more (s->_raw_size);
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frag_now->fr_fix = frag_now_fix_octets ();
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}
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#ifdef elf_tc_final_processing
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elf_tc_final_processing ();
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#endif
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