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authorTerry Guo <terry.guo@arm.com>2014-09-29 10:12:10 +0800
committerTerry Guo <terry.guo@arm.com>2014-09-29 10:12:10 +0800
commitd98b0e2bf6120f50db57ff68eb9b2e00a9a26154 (patch)
treedf624b46ff896cff7e7cadc23c8ef6dabce146df /gas/write.c
parent1b7ee89b52d48adf343e6ffa8808ff238b8cfb9d (diff)
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2014-09-29 Terry Guo <terry.guo@arm.com>
* as.c (create_obj_attrs_section): Move it and call it from ... * write.c (create_obj_attrs_section): ... here. (subsegs_finish_section): Refactored.
Diffstat (limited to 'gas/write.c')
-rw-r--r--gas/write.c124
1 files changed, 82 insertions, 42 deletions
diff --git a/gas/write.c b/gas/write.c
index d1918e6..0657b56 100644
--- a/gas/write.c
+++ b/gas/write.c
@@ -1693,64 +1693,99 @@ set_symtab (void)
#endif
static void
-subsegs_finish (void)
+subsegs_finish_section (asection *s)
{
struct frchain *frchainP;
- asection *s;
+ segment_info_type *seginfo = seg_info (s);
+ if (!seginfo)
+ return;
- for (s = stdoutput->sections; s; s = s->next)
+ for (frchainP = seginfo->frchainP;
+ frchainP != NULL;
+ frchainP = frchainP->frch_next)
{
- segment_info_type *seginfo = seg_info (s);
- if (!seginfo)
- continue;
+ int alignment = 0;
- for (frchainP = seginfo->frchainP;
- frchainP != NULL;
- frchainP = frchainP->frch_next)
- {
- int alignment = 0;
-
- subseg_set (s, frchainP->frch_subseg);
+ subseg_set (s, frchainP->frch_subseg);
- /* This now gets called even if we had errors. In that case,
- any alignment is meaningless, and, moreover, will look weird
- if we are generating a listing. */
- if (!had_errors ())
+ /* This now gets called even if we had errors. In that case,
+ any alignment is meaningless, and, moreover, will look weird
+ if we are generating a listing. */
+ if (!had_errors ())
+ {
+ alignment = SUB_SEGMENT_ALIGN (now_seg, frchainP);
+ if ((bfd_get_section_flags (now_seg->owner, now_seg) & SEC_MERGE)
+ && now_seg->entsize)
{
- alignment = SUB_SEGMENT_ALIGN (now_seg, frchainP);
- if ((bfd_get_section_flags (now_seg->owner, now_seg) & SEC_MERGE)
- && now_seg->entsize)
- {
- unsigned int entsize = now_seg->entsize;
- int entalign = 0;
+ unsigned int entsize = now_seg->entsize;
+ int entalign = 0;
- while ((entsize & 1) == 0)
- {
- ++entalign;
- entsize >>= 1;
- }
- if (entalign > alignment)
- alignment = entalign;
+ while ((entsize & 1) == 0)
+ {
+ ++entalign;
+ entsize >>= 1;
}
+
+ if (entalign > alignment)
+ alignment = entalign;
}
+ }
- if (subseg_text_p (now_seg))
- frag_align_code (alignment, 0);
- else
- frag_align (alignment, 0, 0);
+ if (subseg_text_p (now_seg))
+ frag_align_code (alignment, 0);
+ else
+ frag_align (alignment, 0, 0);
- /* frag_align will have left a new frag.
- Use this last frag for an empty ".fill".
+ /* frag_align will have left a new frag.
+ Use this last frag for an empty ".fill".
- For this segment ...
- Create a last frag. Do not leave a "being filled in frag". */
- frag_wane (frag_now);
- frag_now->fr_fix = 0;
- know (frag_now->fr_next == NULL);
- }
+ For this segment ...
+ Create a last frag. Do not leave a "being filled in frag". */
+ frag_wane (frag_now);
+ frag_now->fr_fix = 0;
+ know (frag_now->fr_next == NULL);
}
}
+static void
+subsegs_finish (void)
+{
+ asection *s;
+
+ for (s = stdoutput->sections; s; s = s->next)
+ subsegs_finish_section (s);
+}
+
+#ifdef OBJ_ELF
+static void
+create_obj_attrs_section (void)
+{
+ segT s;
+ char *p;
+ offsetT size;
+ const char *name;
+
+ size = bfd_elf_obj_attr_size (stdoutput);
+ if (size)
+ {
+ name = get_elf_backend_data (stdoutput)->obj_attrs_section;
+ if (!name)
+ name = ".gnu.attributes";
+ s = subseg_new (name, 0);
+ elf_section_type (s)
+ = get_elf_backend_data (stdoutput)->obj_attrs_section_type;
+ bfd_set_section_flags (stdoutput, s, SEC_READONLY | SEC_DATA);
+ frag_now_fix ();
+ p = frag_more (size);
+ bfd_elf_set_obj_attr_contents (stdoutput, (bfd_byte *)p, size);
+
+ subsegs_finish_section (s);
+ relax_segment (seg_info (s)->frchainP->frch_root, s, 0);
+ size_seg (stdoutput, s, NULL);
+ }
+}
+#endif
+
/* Write the object file. */
void
@@ -1843,6 +1878,11 @@ write_object_file (void)
md_post_relax_hook;
#endif
+#ifdef OBJ_ELF
+ if (IS_ELF)
+ create_obj_attrs_section ();
+#endif
+
#ifndef WORKING_DOT_WORD
{
struct broken_word *lie;