AArch64: convert MC-layer test to .s file

The CodeGen aspects of this test are already covered by cfi-frame.ll;
making it an assembly file reduces the risk of incidental changes
affecting the test.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@180671 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 48 insertions, 0 deletions

diff --git a/test/DebugInfo/AArch64/eh_frame.s b/test/DebugInfo/AArch64/eh_frame.s
new file mode 100644
index 0000000000..d8d6b6d932
--- /dev/null
+++ b/test/DebugInfo/AArch64/eh_frame.s
@@ -0,0 +1,48 @@
+// RUN: llvm-mc -triple aarch64-none-linux-gnu -filetype=obj %s -o %t
+// RUN: llvm-objdump -s %t | FileCheck %s
+        .text
+        .globl foo
+        .type foo,@function
+foo:
+        .cfi_startproc
+        ret
+        .cfi_endproc
+
+// The really key points we're checking here are:
+//  * Return register is x30.
+//  * Pointer format is 0x1b (GNU doesn't appear to understand others).
+
+// The rest is largely incidental, but not expected to change regularly.
+
+// Output is:
+
+// CHECK: Contents of section .eh_frame:
+// CHECK-NEXT: 0000 10000000 00000000 017a5200 017c1e01  .........zR..|..
+// CHECK-NEXT: 0010 1b0c1f00 10000000 18000000 00000000  ................
+
+
+// Won't check the rest, it's rather incidental.
+// 0020 04000000 00000000                    ........
+
+
+
+// The first CIE:
+// -------------------
+// 10000000: length of first CIE = 0x10
+// 00000000: This is a CIE
+// 01: version = 0x1
+// 7a 52 00: augmentation string "zR" -- pointer format is specified
+// 01: code alignment factor 1
+// 7c: data alignment factor -4
+// 1e: return address register 30 (== x30).
+// 01: 1 byte of augmentation
+// 1b: pointer format 1b: DW_EH_PE_pcrel | DW_EH_PE_sdata4
+// 0c 1f 00: initial instructions: "DW_CFA_def_cfa x31 ofs 0" in this case
+
+// Next the FDE:
+// -------------
+// 10000000: FDE length 0x10
+// 18000000: Uses CIE 0x18 backwards (only coincidentally same as above)
+// 00000000: PC begin for this FDE is at 00000000 (relocation is applied here)
+// 04000000: FDE applies up to PC begin+0x14
+// 00: Augmentation string length 0 for this FDE