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authorAlan Modra <amodra@gmail.com>2000-09-07 07:08:58 +0000
committerAlan Modra <amodra@gmail.com>2000-09-07 07:08:58 +0000
commit71bfc0aef6964c54b8e29466e97fb246cdeb2049 (patch)
treecbe9ac80574dca8693326b080dcaec3911031d91 /ld/emultempl
parent4a428502cb140b785a92e6c213a13a5376ea22e1 (diff)
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Fix list handling for orphan section output statements.
Diffstat (limited to 'ld/emultempl')
-rw-r--r--ld/emultempl/elf32.em73
1 files changed, 48 insertions, 25 deletions
diff --git a/ld/emultempl/elf32.em b/ld/emultempl/elf32.em
index 717f931..037ac5a 100644
--- a/ld/emultempl/elf32.em
+++ b/ld/emultempl/elf32.em
@@ -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${EMULATION_NAME}_place_orphan (file, s)
((bfd_vma) 0, "*default*",
(struct lang_output_section_phdr_list *) NULL, "*default*");
- if (place != NULL)
+ if (config.build_constructors && *ps == '\0')
{
- asection *snew, **pps;
+ char *symname;
- stat_ptr = &add;
+ /* lang_leave_ouput_section_statement resets stat_ptr. Put
+ stat_ptr back where we want it. */
+ if (place != NULL)
+ stat_ptr = &add;
- if (*ps == '\0' && config.build_constructors)
- {
- char *symname;
+ symname = (char *) xmalloc (ps - outsecname + sizeof "__stop_");
+ sprintf (symname, "__stop_%s", outsecname);
+ lang_add_assignment (exp_assop ('=', symname,
+ exp_nameop (NAME, ".")));
+ }
- symname = (char *) xmalloc (ps - outsecname + sizeof "__stop_");
- sprintf (symname, "__stop_%s", outsecname);
- lang_add_assignment (exp_assop ('=', symname,
- exp_nameop (NAME, ".")));
- }
- stat_ptr = old;
+ /* Restore the global list pointer. */
+ stat_ptr = old;
+
+ if (place != NULL)
+ {
+ asection *snew, **pps;
snew = os->bfd_section;
if (place->section != NULL
|| (place->os->bfd_section != NULL
&& place->os->bfd_section != snew))
{
- /* Shuffle the section to make the output file look neater. */
+ /* Shuffle the section to make the output file look neater.
+ This is really only cosmetic. */
if (place->section == NULL)
{
#if 0
@@ -1190,6 +1203,9 @@ gld${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;