[PATCH 2/2] gas: sframe: Add test for signal frame with unsupported CFI

Usually if the generation of SFrame from CFI directives encounters
unsupported CFI the generation of SFrame FDE is skipped.  For signal
frames (.cfi_signal_frame) an "empty" FDE without any FREs is generated
instead.

gas/testsuite/
	* gas/cfi-sframe/cfi-sframe.exp (cfi-sframe-common-14): Run
	new common test.
	* gas/cfi-sframe/cfi-sframe-common-14.d: New common test for
	signal frame with unsupported CFI.
	gas/cfi-sframe/cfi-sframe-common-14.s: Likewise.

Signed-off-by: Jens Remus <[email protected]>
---

Notes (jremus):
    Note that this test triggers a segfault unless sframe_xlate_ctx_cleanup
    clears all struct sframe_xlate_ctx fields.  Nick has a fix for that.

 .../gas/cfi-sframe/cfi-sframe-common-14.d     | 20 +++++++++++++++++++
 .../gas/cfi-sframe/cfi-sframe-common-14.s     |  8 ++++++++
 gas/testsuite/gas/cfi-sframe/cfi-sframe.exp   |  1 +
 3 files changed, 29 insertions(+)
 create mode 100644 gas/testsuite/gas/cfi-sframe/cfi-sframe-common-14.d
 create mode 100644 gas/testsuite/gas/cfi-sframe/cfi-sframe-common-14.s

diff --git a/gas/testsuite/gas/cfi-sframe/cfi-sframe-common-14.d b/gas/testsuite/gas/cfi-sframe/cfi-sframe-common-14.d
new file mode 100644
index 000000000000..673dc684c099
--- /dev/null
+++ b/gas/testsuite/gas/cfi-sframe/cfi-sframe-common-14.d
@@ -0,0 +1,20 @@
+#as: --gsframe
+#objdump: --sframe=.sframe
+#name: Signal Frame with unsupported CFI
+#warning: \.cfi_def_cfa_offset with unsupported offset value
+#...
+Contents of the SFrame section .sframe:
+
+  Header :
+
+    Version: SFRAME_VERSION_3
+    Flags: SFRAME_F_FDE_FUNC_START_PCREL
+#?    CFA fixed FP offset: \-?\d+
+#?    CFA fixed RA offset: \-?\d+
+    Num FDEs: 1
+    Num FREs: 0
+
+  Function Index :
+    func idx \[0\]: pc = 0x0, size = 8 bytes, attr = \"S\"
+    STARTPC + CFA + FP + RA +
+#pass
diff --git a/gas/testsuite/gas/cfi-sframe/cfi-sframe-common-14.s b/gas/testsuite/gas/cfi-sframe/cfi-sframe-common-14.s
new file mode 100644
index 000000000000..2c9b28ba8315
--- /dev/null
+++ b/gas/testsuite/gas/cfi-sframe/cfi-sframe-common-14.s
@@ -0,0 +1,8 @@
+	.cfi_startproc
+	.cfi_signal_frame
+	.cfi_def_cfa_register 1
+	.long 0
+	.cfi_def_cfa_register 2
+	.long 0
+	.cfi_def_cfa_offset 1099511627808
+	.cfi_endproc
diff --git a/gas/testsuite/gas/cfi-sframe/cfi-sframe.exp b/gas/testsuite/gas/cfi-sframe/cfi-sframe.exp
index ba6cbc13f72a..d7418726f274 100644
--- a/gas/testsuite/gas/cfi-sframe/cfi-sframe.exp
+++ b/gas/testsuite/gas/cfi-sframe/cfi-sframe.exp
@@ -50,6 +50,7 @@ if  { ([istarget "x86_64-*-*"] || [istarget "aarch64*-*-*"]
     run_dump_test "cfi-sframe-common-11"
     run_dump_test "cfi-sframe-common-12"
     run_dump_test "cfi-sframe-common-13"
+    run_dump_test "cfi-sframe-common-14"
 
     run_dump_test "common-empty-2"
     run_dump_test "common-empty-3"
-- 
2.53.0