[PATCH] D127171: [DWARF] Support 'G' in dwarf parser

[Florian Mayer via Phabricator via llvm-commits]

fmayer updated this revision to Diff 434660.
fmayer added a comment.

test


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D127171/new/

https://reviews.llvm.org/D127171

Files:
  llvm/lib/DebugInfo/DWARF/DWARFDebugFrame.cpp
  llvm/test/DebugInfo/AArch64/stack-tagging-cfi.s


Index: llvm/test/DebugInfo/AArch64/stack-tagging-cfi.s
===================================================================
--- /dev/null
+++ llvm/test/DebugInfo/AArch64/stack-tagging-cfi.s
@@ -0,0 +1,21 @@
+# RUN: llvm-mc -filetype=obj -triple aarch64-generic-linux -mattr=+mte %s -o %t.o
+# RUN: llvm-objdump -s --dwarf=frames %t.o | FileCheck %s
+
+# CHECK: Augmentation:          "zRG"
+
+	.text
+	.globl	WithUnwind                      // -- Begin function WithUnwind
+	.p2align	2
+	.type	WithUnwind, at function
+WithUnwind:                             // @WithUnwind
+	.cfi_startproc
+// %bb.0:                               // %entry
+	.cfi_mte_tagged_frame
+	ret
+.Lfunc_end0:
+	.size	WithUnwind, .Lfunc_end0-WithUnwind
+	.cfi_endproc
+                                        // -- End function
+	.globl	NoUnwind                        // -- Begin function NoUnwind
+	.p2align	2
+	.type	NoUnwind, at function
Index: llvm/lib/DebugInfo/DWARF/DWARFDebugFrame.cpp
===================================================================
--- llvm/lib/DebugInfo/DWARF/DWARFDebugFrame.cpp
+++ llvm/lib/DebugInfo/DWARF/DWARFDebugFrame.cpp
@@ -1138,6 +1138,10 @@
             // B-Key is used for signing functions associated with this
             // augmentation string
             break;
+            // This stack frame contains MTE tagged data, so needs to be
+            // untagged on unwind.
+          case 'G':
+            break;
           }
         }
 


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