Stop generating GNU build notes for linkonce sections.

gas	* write.c (maybe_generate_build_notes): Generate notes on a
	per-code-section basis.  Skip linkonce sections.

ld	* testsuite/ld-elf/notes.exp: New file: Run new test.
	* testsuite/ld-elf/note1_1.s: New file: Source file for test.
	* testsuite/ld-elf/note1_2.s: New file: Source file for test.
	* testsuite/ld-elf/note1.r: New file: Expected readelf output.

5 files changed, 90 insertions, 0 deletions

diff --git a/ld/ChangeLog b/ld/ChangeLog
index fbc4d59..bb20a46 100644
--- a/ld/ChangeLog
+++ b/ld/ChangeLog
@@ -1,3 +1,10 @@
+2018-05-14  Nick Clifton  <nickc@redhat.com>
+
+	* testsuite/ld-elf/notes.exp: New file: Run new test.
+	* testsuite/ld-elf/note1_1.s: New file: Source file for test.
+	* testsuite/ld-elf/note1_2.s: New file: Source file for test.
+	* testsuite/ld-elf/note1.r: New file: Expected readelf output.
+
 2018-05-14  H.J. Lu  <hongjiu.lu@intel.com>
 
 	PR ld/23169
diff --git a/ld/testsuite/ld-elf/note1.r b/ld/testsuite/ld-elf/note1.r
new file mode 100644
index 0000000..58886d8
--- /dev/null
+++ b/ld/testsuite/ld-elf/note1.r
@@ -0,0 +1,6 @@
+#...
+Displaying notes found in: .gnu.build.attributes
+[ 	]+Owner[ 	]+Data size[ 	]+Description
+[ 	]+GA\$<version>3a1[ 	]+0x000000(08|10)[ 	]+OPEN[ 	]+Applies to region from 0.*
+[ 	]+GA\$<version>3a1[ 	]+0x000000(08|10)[ 	]+OPEN[ 	]+Applies to region from 0.*
+#pass
diff --git a/ld/testsuite/ld-elf/note1_1.s b/ld/testsuite/ld-elf/note1_1.s
new file mode 100644
index 0000000..e9d80fb
--- /dev/null
+++ b/ld/testsuite/ld-elf/note1_1.s
@@ -0,0 +1,17 @@
+	.section .gnu.linkonce.t.thunk.ax,"ax",%progbits
+	.globl  thunk.ax
+	.hidden thunk.ax
+	.p2align 4
+	.type thunk.ax,%function
+thunk.ax:
+	.dc.l 0
+	.size thunk.ax, . - thunk.ax
+
+	.p2align 4
+	.globl foo
+	.type  foo,%function
+foo:
+	.dc.a thunk.ax
+	.dc.l 0
+	.size foo, . - foo
+
diff --git a/ld/testsuite/ld-elf/note1_2.s b/ld/testsuite/ld-elf/note1_2.s
new file mode 100644
index 0000000..8162d38
--- /dev/null
+++ b/ld/testsuite/ld-elf/note1_2.s
@@ -0,0 +1,17 @@
+
+	.section .gnu.linkonce.t.thunk.ax,"ax",%progbits
+	.globl  thunk.ax
+	.hidden thunk.ax
+	.p2align 4
+	.type   thunk.ax,%function
+thunk.ax:
+	.dc.l	0
+	.size thunk.ax, . - thunk.ax
+
+	.p2align 4
+	.globl bar
+	.type  bar,%function
+bar:
+	.dc.a	thunk.ax
+	.dc.l	0
+	.size bar, . - bar
diff --git a/ld/testsuite/ld-elf/notes.exp b/ld/testsuite/ld-elf/notes.exp
new file mode 100644
index 0000000..5f55d46
--- /dev/null
+++ b/ld/testsuite/ld-elf/notes.exp
@@ -0,0 +1,43 @@
+# Expect script for various ELF based Note tests.
+#   Copyright (C) 2018 Free Software Foundation, Inc.
+#
+# This file is part of the GNU Binutils.
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
+# MA 02110-1301, USA.
+#
+
+# Exclude non-ELF targets.
+
+if ![is_elf_format] {
+    return
+}
+
+set old_ldflags $LDFLAGS
+if { [istarget spu*-*-*] } {
+    set LDFLAGS "$LDFLAGS --local-store 0:0"
+}
+
+if { [is_remote host] } then {
+    remote_download host merge.ld
+}
+
+run_ld_link_tests [list \
+    [list "Linkonce sections with assembler generated notes" \
+	"-r" "" "--generate-missing-build-notes=yes" \
+	 {note1_1.s note1_2.s} \
+	 {{readelf {--wide --notes} note1.r}} \
+	 "note1.so" ] \
+]