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Fix list handling for orphan section output statements.

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This commit is contained in:
Alan Modra 2000-09-07 07:08:58 +00:00
parent 4a428502cb
commit 71bfc0aef6
2 changed files with 56 additions and 26 deletions
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7
ld/ChangeLog
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@ -1,3 +1,10 @@
2000-09-07 Alan Modra <alan@linuxcare.com.au>
* emultempl/elf32.em (gld${EMULATION_NAME}_place_orphan): Fix
broken list handling. Create __start_SECNAME and __stop_SECNAME
when no place-holder. Add some comments. Test both SEC_CODE and
SEC_READONLY for hold_text to prevent .rodata orphan poisoning.
2000-09-07 Niibe Yutaka <gniibe@m17n.org>, Kaz Kojima <kkojima@rr.iij4u.or.jp>, Alexandre Oliva <aoliva@redhat.com>
* configure.tgt (sh-*-linux*): Added.

75
ld/emultempl/elf32.em
View File

@ -1010,7 +1010,7 @@ gld${EMULATION_NAME}_place_orphan (file, s)
static struct orphan_save hold_interp;
static int count = 1;
struct orphan_save *place;
lang_statement_list_type *old = NULL;
lang_statement_list_type *old;
lang_statement_list_type add;
etree_type *address;
const char *secname;
@ -1060,8 +1060,10 @@ gld${EMULATION_NAME}_place_orphan (file, s)
if (s->flags & SEC_EXCLUDE)
return false;
else if ((s->flags & SEC_ALLOC) == 0)
place = NULL;
place = NULL;
if ((s->flags & SEC_ALLOC) == 0)
;
else if ((s->flags & SEC_LOAD) != 0
&& strncmp (secname, ".note", 4) == 0
&& HAVE_SECTION (hold_interp, ".interp"))
@ -1076,15 +1078,12 @@ gld${EMULATION_NAME}_place_orphan (file, s)
&& (hold_rel.os != NULL
|| (hold_rel.os = output_rel_find ()) != NULL))
place = &hold_rel;
else if ((s->flags & SEC_CODE) == 0
&& (s->flags & SEC_READONLY) != 0
else if ((s->flags & (SEC_CODE | SEC_READONLY)) == SEC_READONLY
&& HAVE_SECTION (hold_rodata, ".rodata"))
place = &hold_rodata;
else if ((s->flags & SEC_READONLY) != 0
else if ((s->flags & (SEC_CODE | SEC_READONLY)) == (SEC_CODE | SEC_READONLY)
&& hold_text.os != NULL)
place = &hold_text;
else
place = NULL;
#undef HAVE_SECTION
@ -1097,19 +1096,27 @@ gld${EMULATION_NAME}_place_orphan (file, s)
outsecname,
&count);
/* Start building a list of statements for this section.
First save the current statement pointer. */
old = stat_ptr;
/* If we have found an appropriate place for the output section
statements for this orphan, add them to our own private list,
inserting them later into the global statement list. */
if (place != NULL)
{
/* Start building a list of statements for this section. */
old = stat_ptr;
stat_ptr = &add;
lang_list_init (stat_ptr);
}
if (config.build_constructors)
{
/* If the name of the section is representable in C, then create
symbols to mark the start and the end of the section. */
for (ps = outsecname; *ps != '\0'; ps++)
if (! isalnum ((unsigned char) *ps) && *ps != '_')
break;
if (*ps == '\0' && config.build_constructors)
if (*ps == '\0')
{
char *symname;
etree_type *e_align;
@ -1139,29 +1146,35 @@ gld${EMULATION_NAME}_place_orphan (file, s)
((bfd_vma) 0, "*default*",
(struct lang_output_section_phdr_list *) NULL, "*default*");
if (config.build_constructors && *ps == '\0')
{
char *symname;
/* lang_leave_ouput_section_statement resets stat_ptr. Put
stat_ptr back where we want it. */
if (place != NULL)
stat_ptr = &add;
symname = (char *) xmalloc (ps - outsecname + sizeof "__stop_");
sprintf (symname, "__stop_%s", outsecname);
lang_add_assignment (exp_assop ('=', symname,
exp_nameop (NAME, ".")));
}
/* Restore the global list pointer. */
stat_ptr = old;
if (place != NULL)
{
asection *snew, **pps;
stat_ptr = &add;
if (*ps == '\0' && config.build_constructors)
{
char *symname;
symname = (char *) xmalloc (ps - outsecname + sizeof "__stop_");
sprintf (symname, "__stop_%s", outsecname);
lang_add_assignment (exp_assop ('=', symname,
exp_nameop (NAME, ".")));
}
stat_ptr = old;
snew = os->bfd_section;
if (place->section != NULL
|| (place->os->bfd_section != NULL
&& place->os->bfd_section != snew))
{
/* Shuffle the section to make the output file look neater. */
/* Shuffle the section to make the output file look neater.
This is really only cosmetic. */
if (place->section == NULL)
{
#if 0
@ -1190,6 +1203,9 @@ gld${EMULATION_NAME}_place_orphan (file, s)
}
place->section = &snew->next; /* Save the end of this list. */
/* We try to put the output statements in some sort of
reasonable order here, because they determine the final load
addresses of the orphan sections. */
if (place->stmt == NULL)
{
/* Put the new statement list right at the head. */
@ -1202,7 +1218,14 @@ gld${EMULATION_NAME}_place_orphan (file, s)
*add.tail = *place->stmt;
*place->stmt = add.head;
}
place->stmt = add.tail; /* Save the end of this list. */
/* Fix the global list pointer if we happened to tack our new
list at the tail. */
if (*old->tail == add.head)
old->tail = add.tail;
/* Save the end of this list. */
place->stmt = add.tail;
}
return true;