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authorH.J. Lu <hjl.tools@gmail.com>2017-11-11 07:02:30 -0800
committerH.J. Lu <hjl.tools@gmail.com>2017-11-12 17:26:11 -0800
commited1794ee7a2bd8adc22e5bb8e7343b72758d5692 (patch)
tree1b32fedc7ee60aaf9b9af9bccd7272d4665b0e89 /ld/ldlang.c
parentf4d18a54667ded2b50894a3d0740f93825f2a3e8 (diff)
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ld: Add ldlang_check_relro_region/update lang_find_relro_sections_1
Extract GNU_RELRO region check into a new funtion and pass a pointer to seg_align_type to lang_find_relro_sections_1 so that they can also be used for text-only LOAD segment. * ldlang.c (lang_size_sections_1): Extract GNU_RELRO region check into ... (ldlang_check_relro_region): New function. (lang_find_relro_sections_1): Add an argument for pointer to seg_align_type and replace expld.dataseg with the pointer. (lang_find_relro_sections): Pass address of expld.dataseg to lang_find_relro_sections_1.
Diffstat (limited to 'ld/ldlang.c')
-rw-r--r--ld/ldlang.c55
1 files changed, 32 insertions, 23 deletions
diff --git a/ld/ldlang.c b/ld/ldlang.c
index 6bb9e47..674004e 100644
--- a/ld/ldlang.c
+++ b/ld/ldlang.c
@@ -4975,6 +4975,30 @@ os_region_check (lang_output_section_statement_type *os,
}
}
+static void
+ldlang_check_relro_region (lang_statement_union_type *s,
+ seg_align_type *seg)
+{
+ if (seg->relro == exp_seg_relro_start)
+ {
+ if (!seg->relro_start_stat)
+ seg->relro_start_stat = s;
+ else
+ {
+ ASSERT (seg->relro_start_stat == s);
+ }
+ }
+ else if (seg->relro == exp_seg_relro_end)
+ {
+ if (!seg->relro_end_stat)
+ seg->relro_end_stat = s;
+ else
+ {
+ ASSERT (seg->relro_end_stat == s);
+ }
+ }
+}
+
/* Set the sizes for all the output sections. */
static bfd_vma
@@ -5432,24 +5456,8 @@ lang_size_sections_1
output_section_statement->bfd_section,
&newdot);
- if (expld.dataseg.relro == exp_seg_relro_start)
- {
- if (!expld.dataseg.relro_start_stat)
- expld.dataseg.relro_start_stat = s;
- else
- {
- ASSERT (expld.dataseg.relro_start_stat == s);
- }
- }
- else if (expld.dataseg.relro == exp_seg_relro_end)
- {
- if (!expld.dataseg.relro_end_stat)
- expld.dataseg.relro_end_stat = s;
- else
- {
- ASSERT (expld.dataseg.relro_end_stat == s);
- }
- }
+ ldlang_check_relro_region (s, &expld.dataseg);
+
expld.dataseg.relro = exp_seg_relro_none;
/* This symbol may be relative to this section. */
@@ -6859,6 +6867,7 @@ find_relro_section_callback (lang_wild_statement_type *ptr ATTRIBUTE_UNUSED,
static void
lang_find_relro_sections_1 (lang_statement_union_type *s,
+ seg_align_type *seg,
bfd_boolean *has_relro_section)
{
if (*has_relro_section)
@@ -6866,7 +6875,7 @@ lang_find_relro_sections_1 (lang_statement_union_type *s,
for (; s != NULL; s = s->header.next)
{
- if (s == expld.dataseg.relro_end_stat)
+ if (s == seg->relro_end_stat)
break;
switch (s->header.type)
@@ -6878,15 +6887,15 @@ lang_find_relro_sections_1 (lang_statement_union_type *s,
break;
case lang_constructors_statement_enum:
lang_find_relro_sections_1 (constructor_list.head,
- has_relro_section);
+ seg, has_relro_section);
break;
case lang_output_section_statement_enum:
lang_find_relro_sections_1 (s->output_section_statement.children.head,
- has_relro_section);
+ seg, has_relro_section);
break;
case lang_group_statement_enum:
lang_find_relro_sections_1 (s->group_statement.children.head,
- has_relro_section);
+ seg, has_relro_section);
break;
default:
break;
@@ -6902,7 +6911,7 @@ lang_find_relro_sections (void)
/* Check all sections in the link script. */
lang_find_relro_sections_1 (expld.dataseg.relro_start_stat,
- &has_relro_section);
+ &expld.dataseg, &has_relro_section);
if (!has_relro_section)
link_info.relro = FALSE;