Add new directive to GAS: .attach_to_group.

	* config/obj-elf (elf_pseudo_table): Add attach_to_group.
        (obj_elf_attach_to_group): New function.
        * doc/as.texi: Document the new directive.
	* NEWS: Mention the new feature.
        * testsuite/gas/elf/attach-1.s: New test.
        * testsuite/gas/elf/attach-1.d: New test driver.
        * testsuite/gas/elf/attach-2.s: New test.
        * testsuite/gas/elf/attach-2.d: New test driver.
        * testsuite/gas/elf/attach-err.s: New test.
        * testsuite/gas/elf/attach-err.d: New test driver.
        * testsuite/gas/elf/attach-err.err: New test error output.
        * testsuite/gas/elf/elf.exp: Run the new tests.

8 files changed, 58 insertions, 0 deletions

diff --git a/gas/testsuite/gas/elf/attach-1.d b/gas/testsuite/gas/elf/attach-1.d
new file mode 100644
index 0000000..053783e
--- /dev/null
+++ b/gas/testsuite/gas/elf/attach-1.d
@@ -0,0 +1,11 @@
+#readelf: --section-groups
+#name: Attaching a section to a group
+#source: attach-1.s
+
+#...
+group section \[    1\] `\.group' \[foo\.group\] contains . sections:
+   \[Index\]    Name
+   \[    .\]   .*
+   \[    .\]   foo
+#pass
+
diff --git a/gas/testsuite/gas/elf/attach-1.s b/gas/testsuite/gas/elf/attach-1.s
new file mode 100644
index 0000000..aa69fff
--- /dev/null
+++ b/gas/testsuite/gas/elf/attach-1.s
@@ -0,0 +1,11 @@
+	.text
+	.nop
+	
+	.section foo, "G", %progbits , foo.group
+	.word 0
+
+	.text
+	/* This is the intended use of the .attach_to_group directive.
+	   It attaches a previously defined section (.text) to a
+	   previously defined group (foo.group).  */
+	.attach_to_group foo.group
diff --git a/gas/testsuite/gas/elf/attach-2.d b/gas/testsuite/gas/elf/attach-2.d
new file mode 100644
index 0000000..4aa5211
--- /dev/null
+++ b/gas/testsuite/gas/elf/attach-2.d
@@ -0,0 +1,11 @@
+#readelf: --section-groups
+#name: Attaching a section to a non-existant group
+#source: attach-2.s
+
+#...
+group section \[    1\] `\.group' \[foo\.group\] contains 2 sections:
+   \[Index\]    Name
+   \[    .\]   bar
+   \[    .\]   foo
+#pass
+
diff --git a/gas/testsuite/gas/elf/attach-2.s b/gas/testsuite/gas/elf/attach-2.s
new file mode 100644
index 0000000..4a5663f
--- /dev/null
+++ b/gas/testsuite/gas/elf/attach-2.s
@@ -0,0 +1,9 @@
+	.section bar
+	.nop
+	.attach_to_group foo.group
+	
+	.section foo, "G", %note , foo.group
+	.word 0
+
+	.section bar
+	.nop
diff --git a/gas/testsuite/gas/elf/attach-err.d b/gas/testsuite/gas/elf/attach-err.d
new file mode 100644
index 0000000..3028d72
--- /dev/null
+++ b/gas/testsuite/gas/elf/attach-err.d
@@ -0,0 +1,3 @@
+#name: Errors generated by .attach_to_group
+#source: attach-err.s
+#error_output: attach-err.err
diff --git a/gas/testsuite/gas/elf/attach-err.err b/gas/testsuite/gas/elf/attach-err.err
new file mode 100644
index 0000000..7385467
--- /dev/null
+++ b/gas/testsuite/gas/elf/attach-err.err
@@ -0,0 +1,4 @@
+.*: Assembler messages:
+.*:4: Warning: section .* already has a group \(does\.not\.exist\)
+.*:5: Error: missing name
+.*:5: Warning: group name not parseable
diff --git a/gas/testsuite/gas/elf/attach-err.s b/gas/testsuite/gas/elf/attach-err.s
new file mode 100644
index 0000000..40597e9
--- /dev/null
+++ b/gas/testsuite/gas/elf/attach-err.s
@@ -0,0 +1,5 @@
+
+	/* Test the error messages that should be generated.  */
+	.attach_to_group does.not.exist  /* This is OK, the group does not have to exist.  */
+	.attach_to_group foo.group  /* Already attached.  */
+	.attach_to_group  /* Missing group name.  */
diff --git a/gas/testsuite/gas/elf/elf.exp b/gas/testsuite/gas/elf/elf.exp
index 135ade2..5ce9691 100644
--- a/gas/testsuite/gas/elf/elf.exp
+++ b/gas/testsuite/gas/elf/elf.exp
@@ -139,6 +139,10 @@ if { [is_elf_format] } then {
     run_dump_test "group1b"
     run_dump_test "group2"
     run_dump_test "group3"
+
+    run_dump_test "attach-1"
+    run_dump_test "attach-err"
+    
     switch -glob $target_triplet {
 	hppa64*-*-hpux* { }
 	riscv*-*-* { }