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authorH.J. Lu <hjl.tools@gmail.com>2018-12-07 08:30:30 -0800
committerH.J. Lu <hjl.tools@gmail.com>2018-12-07 08:30:43 -0800
commitd2ef37ebd9f771d06edf1fdea37970f60b242b2d (patch)
treeb832c9a33523fbbf2b08af67fa0aceba8253d709 /bfd/elf-properties.c
parent4a8110007bf58be329f108374e00ef8ddc1fe3ec (diff)
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elf: Report property change when merging properties
With merging properties, report property change in linker map file, like Merging program properties Removed property 0xc0010000 to merge /usr/lib/gcc/x86_64-redhat-linux/8/../../../../lib64/crt1.o (0x0) and /usr/lib/gcc/x86_64-redhat-linux/8/../../../../lib64/crti.o (0x0) Removed property 0xc0000002 to merge /usr/lib/gcc/x86_64-redhat-linux/8/../../../../lib64/crt1.o (0x3) and x.o (not found) Removed property 0xc0000000 to merge /usr/lib/gcc/x86_64-redhat-linux/8/../../../../lib64/crt1.o (not found) and /usr/lib64/libc_nonshared.a(elf-init.oS) (0x0) Removed property 0xc0000001 to merge /usr/lib/gcc/x86_64-redhat-linux/8/../../../../lib64/crt1.o (not found) and /usr/lib64/libc_nonshared.a(elf-init.oS) (0x0) bfd/ * elf-properties.c (elf_find_and_remove_property): Add a bfd_boolean argument to indicate if the property should be removed. (elf_merge_gnu_property_list): Updated. Report property change in linker map file. (elf_get_gnu_property_section_size): Skip property_remove properties. (elf_write_gnu_properties): Likewise. (_bfd_elf_link_setup_gnu_properties): Report property merge in linker map file. Pass abfd to elf_merge_gnu_property_list. include/ * bfdlink.h (bfd_link_info): Add has_map_file. ld/ * NEWS: Updated for property change report. * ld.texi: Document property change report. * ldmain.c (main): Set link_info.has_map_file to TRUE when linker map file is used. * testsuite/ld-scripts/rgn-over1.d: Updated. * testsuite/ld-scripts/rgn-over2.d: Likewise. * testsuite/ld-scripts/rgn-over3.d: Likewise. * testsuite/ld-scripts/rgn-over4.d: Likewise. * testsuite/ld-scripts/rgn-over5.d: Likewise. * testsuite/ld-scripts/rgn-over6.d: Likewise. * testsuite/ld-scripts/rgn-over7.d: Likewise. * testsuite/ld-x86-64/property-x86-ibt1a-x32.d: Check linker map file. * testsuite/ld-x86-64/property-x86-ibt1a.d: Likewise. * testsuite/ld-x86-64/property-x86-ibt1a.map: New file.
Diffstat (limited to 'bfd/elf-properties.c')
-rw-r--r--bfd/elf-properties.c176
1 files changed, 142 insertions, 34 deletions
diff --git a/bfd/elf-properties.c b/bfd/elf-properties.c
index cd44ed6..ec36210 100644
--- a/bfd/elf-properties.c
+++ b/bfd/elf-properties.c
@@ -241,7 +241,7 @@ elf_merge_gnu_properties (struct bfd_link_info *info, bfd *abfd,
static elf_property *
elf_find_and_remove_property (elf_property_list **listp,
- unsigned int type)
+ unsigned int type, bfd_boolean remove)
{
elf_property_list *list;
@@ -250,7 +250,8 @@ elf_find_and_remove_property (elf_property_list **listp,
if (type == list->property.pr_type)
{
/* Remove this property. */
- *listp = list->next;
+ if (remove)
+ *listp = list->next;
return &list->property;
}
else if (type < list->property.pr_type)
@@ -261,47 +262,144 @@ elf_find_and_remove_property (elf_property_list **listp,
return NULL;
}
-/* Merge GNU property list *LISTP with ABFD. */
+/* Merge GNU property list *LISTP in ABFD with FIRST_PBFD. */
static void
-elf_merge_gnu_property_list (struct bfd_link_info *info, bfd *abfd,
- elf_property_list **listp)
+elf_merge_gnu_property_list (struct bfd_link_info *info, bfd *first_pbfd,
+ bfd *abfd, elf_property_list **listp)
{
elf_property_list *p, **lastp;
elf_property *pr;
+ bfd_boolean number_p;
+ bfd_vma number = 0;
- /* Merge each GNU property in ABFD with the one on *LISTP. */
- lastp = &elf_properties (abfd);
+ /* Merge each GNU property in FIRST_PBFD with the one on *LISTP. */
+ lastp = &elf_properties (first_pbfd);
for (p = *lastp; p; p = p->next)
+ if (p->property.pr_kind != property_remove)
+ {
+ if (p->property.pr_kind == property_number)
+ {
+ number_p = TRUE;
+ number = p->property.u.number;
+ }
+ else
+ number_p = FALSE;
+ pr = elf_find_and_remove_property (listp, p->property.pr_type,
+ TRUE);
+ /* Pass NULL to elf_merge_gnu_properties for the property which
+ isn't on *LISTP. */
+ elf_merge_gnu_properties (info, first_pbfd, &p->property, pr);
+ if (p->property.pr_kind == property_remove)
+ {
+ if (info->has_map_file)
+ {
+ if (number_p)
+ {
+ if (pr != NULL)
+ info->callbacks->minfo
+ (_("Removed property %W to merge %pB (0x%v) "
+ "and %pB (0x%v)\n"),
+ (bfd_vma) p->property.pr_type, first_pbfd,
+ number, abfd, pr->u.number);
+ else
+ info->callbacks->minfo
+ (_("Removed property %W to merge %pB (0x%v) "
+ "and %pB (not found)\n"),
+ (bfd_vma) p->property.pr_type, first_pbfd,
+ number, abfd);
+ }
+ else
+ {
+ if (pr != NULL)
+ info->callbacks->minfo
+ (_("Removed property %W to merge %pB and %pB\n"),
+ (bfd_vma) p->property.pr_type, first_pbfd, abfd);
+ else
+ info->callbacks->minfo
+ (_("Removed property %W to merge %pB and %pB "
+ "(not found)\n"),
+ (bfd_vma) p->property.pr_type, first_pbfd, abfd);
+ }
+ }
+ else
+ {
+ /* Remove this property. */
+ *lastp = p->next;
+ continue;
+ }
+ }
+ else if (number_p)
+ {
+ if (pr != NULL)
+ {
+ if (p->property.u.number != number
+ || p->property.u.number != pr->u.number)
+ info->callbacks->minfo
+ (_("Updated property %W (0x%v) to merge %pB (0x%v) "
+ "and %pB (0x%v)\n"),
+ (bfd_vma) p->property.pr_type, p->property.u.number,
+ first_pbfd, number, abfd, pr->u.number);
+ }
+ else
+ {
+ if (p->property.u.number != number)
+ info->callbacks->minfo
+ (_("Updated property %W (%v) to merge %pB (0x%v) "
+ "and %pB (not found)\n"),
+ (bfd_vma) p->property.pr_type, p->property.u.number,
+ first_pbfd, number, abfd);
+ }
+ }
+ lastp = &p->next;
+ }
+
+ /* Merge the remaining properties on *LISTP with FIRST_PBFD. */
+ for (p = *listp; p != NULL; p = p->next)
{
- pr = elf_find_and_remove_property (listp, p->property.pr_type);
- /* Pass NULL to elf_merge_gnu_properties for the property which
- isn't on *LISTP. */
- elf_merge_gnu_properties (info, abfd, &p->property, pr);
- if (p->property.pr_kind == property_remove)
+ if (p->property.pr_kind == property_number)
{
- /* Remove this property. */
- *lastp = p->next;
- continue;
+ number_p = TRUE;
+ number = p->property.u.number;
}
- lastp = &p->next;
- }
-
- /* Merge the remaining properties on *LISTP with ABFD. */
- for (p = *listp; p != NULL; p = p->next)
- if (elf_merge_gnu_properties (info, abfd, NULL, &p->property))
- {
- if (p->property.pr_type == GNU_PROPERTY_NO_COPY_ON_PROTECTED)
- elf_has_no_copy_on_protected (abfd) = TRUE;
+ else
+ number_p = FALSE;
- pr = _bfd_elf_get_property (abfd, p->property.pr_type,
- p->property.pr_datasz);
- /* It must be a new property. */
- if (pr->pr_kind != property_unknown)
- abort ();
- /* Add a new property. */
- *pr = p->property;
- }
+ if (elf_merge_gnu_properties (info, first_pbfd, NULL, &p->property))
+ {
+ if (p->property.pr_type == GNU_PROPERTY_NO_COPY_ON_PROTECTED)
+ elf_has_no_copy_on_protected (first_pbfd) = TRUE;
+
+ pr = _bfd_elf_get_property (first_pbfd, p->property.pr_type,
+ p->property.pr_datasz);
+ /* It must be a new property. */
+ if (pr->pr_kind != property_unknown)
+ abort ();
+ /* Add a new property. */
+ *pr = p->property;
+ }
+ else
+ {
+ pr = elf_find_and_remove_property (&elf_properties (first_pbfd),
+ p->property.pr_type,
+ FALSE);
+ if (pr == NULL)
+ {
+ if (number_p)
+ info->callbacks->minfo
+ (_("Removed property %W to merge %pB (not found) and "
+ "%pB (0x%v)\n"),
+ (bfd_vma) p->property.pr_type, first_pbfd, abfd,
+ number);
+ else
+ info->callbacks->minfo
+ (_("Removed property %W to merge %pB and %pB\n"),
+ (bfd_vma) p->property.pr_type, first_pbfd, abfd);
+ }
+ else if (pr->pr_kind != property_remove)
+ abort ();
+ }
+ }
}
/* Get GNU property section size. */
@@ -319,8 +417,11 @@ elf_get_gnu_property_section_size (elf_property_list *list,
size = descsz;
for (; list != NULL; list = list->next)
{
- /* There are 4 byte type + 4 byte datasz for each property. */
unsigned int datasz;
+ /* Check if this property should be skipped. */
+ if (list->property.pr_kind == property_remove)
+ continue;
+ /* There are 4 byte type + 4 byte datasz for each property. */
if (list->property.pr_type == GNU_PROPERTY_STACK_SIZE)
datasz = align_size;
else
@@ -355,6 +456,9 @@ elf_write_gnu_properties (bfd *abfd, bfd_byte *contents,
size = descsz;
for (; list != NULL; list = list->next)
{
+ /* Check if this property should be skipped. */
+ if (list->property.pr_kind == property_remove)
+ continue;
/* There are 4 byte type + 4 byte datasz for each property. */
if (list->property.pr_type == GNU_PROPERTY_STACK_SIZE)
datasz = align_size;
@@ -445,6 +549,10 @@ _bfd_elf_link_setup_gnu_properties (struct bfd_link_info *info)
return NULL;
/* Merge .note.gnu.property sections. */
+ info->callbacks->minfo (_("\n"));
+ info->callbacks->minfo (_("Merging program properties\n"));
+ info->callbacks->minfo (_("\n"));
+
for (abfd = info->input_bfds; abfd != NULL; abfd = abfd->link.next)
if (abfd != first_pbfd
&& (abfd->flags & (DYNAMIC | BFD_PLUGIN)) == 0)
@@ -471,7 +579,7 @@ _bfd_elf_link_setup_gnu_properties (struct bfd_link_info *info)
when all properties are from ELF objects with different
machine code or class. */
if (first_pbfd != NULL)
- elf_merge_gnu_property_list (info, first_pbfd, listp);
+ elf_merge_gnu_property_list (info, first_pbfd, abfd, listp);
if (list != NULL)
{