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[binutils-gdb] Speedup ELF orphan placement for relocatable link
- From: H.J.Lu <hjl at sourceware dot org>
- To: bfd-cvs at sourceware dot org
- Date: 1 Mar 2016 13:52:18 -0000
- Subject: [binutils-gdb] Speedup ELF orphan placement for relocatable link
https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=077fcd6a3b5729044acce83f77ebedd3adbadab0
commit 077fcd6a3b5729044acce83f77ebedd3adbadab0
Author: H.J. Lu <hjl.tools@gmail.com>
Date: Mon Feb 29 11:04:22 2016 -0800
Speedup ELF orphan placement for relocatable link
Since there is no need to place output sections in specific order for
relocatable link, we can skip merging flags of other input sections.
PR ld/19739
* ld/emultempl/elf32.em (gld${EMULATION_NAME}_place_orphan): Don't
merge flags of other input sections for relocatable link.
Diff:
---
ld/emultempl/elf32.em | 33 ++++++++++++++++++++-------------
1 file changed, 20 insertions(+), 13 deletions(-)
diff --git a/ld/emultempl/elf32.em b/ld/emultempl/elf32.em
index f3ec875..3e9f684 100644
--- a/ld/emultempl/elf32.em
+++ b/ld/emultempl/elf32.em
@@ -1946,25 +1946,32 @@ gld${EMULATION_NAME}_place_orphan (asection *s,
return os;
}
+ flags = s->flags;
+ if (!bfd_link_relocatable (&link_info))
+ {
+ nexts = s;
+ while ((nexts = bfd_get_next_section_by_name (nexts->owner, nexts))
+ != NULL)
+ if (nexts->output_section == NULL
+ && (nexts->flags & SEC_EXCLUDE) == 0
+ && ((nexts->flags ^ flags) & (SEC_LOAD | SEC_ALLOC)) == 0
+ && (nexts->owner->flags & DYNAMIC) == 0
+ && nexts->owner->usrdata != NULL
+ && !(((lang_input_statement_type *) nexts->owner->usrdata)
+ ->flags.just_syms)
+ && _bfd_elf_match_sections_by_type (nexts->owner, nexts,
+ s->owner, s))
+ flags = (((flags ^ SEC_READONLY)
+ | (nexts->flags ^ SEC_READONLY))
+ ^ SEC_READONLY);
+ }
+
/* Decide which segment the section should go in based on the
section name and section flags. We put loadable .note sections
right after the .interp section, so that the PT_NOTE segment is
stored right after the program headers where the OS can read it
in the first page. */
- flags = s->flags;
- nexts = s;
- while ((nexts = bfd_get_next_section_by_name (nexts->owner, nexts)) != NULL)
- if (nexts->output_section == NULL
- && (nexts->flags & SEC_EXCLUDE) == 0
- && ((nexts->flags ^ flags) & (SEC_LOAD | SEC_ALLOC)) == 0
- && (nexts->owner->flags & DYNAMIC) == 0
- && nexts->owner->usrdata != NULL
- && !(((lang_input_statement_type *) nexts->owner->usrdata)
- ->flags.just_syms)
- && _bfd_elf_match_sections_by_type (nexts->owner, nexts, s->owner, s))
- flags = (((flags ^ SEC_READONLY) | (nexts->flags ^ SEC_READONLY))
- ^ SEC_READONLY);
place = NULL;
if ((flags & (SEC_ALLOC | SEC_DEBUGGING)) == 0)
place = &hold[orphan_nonalloc];