[lld] f6b1bfb - [ELF] Support 'G' in .eh_frame
Florian Mayer via llvm-commits
llvm-commits at lists.llvm.org
Wed Jun 8 14:29:03 PDT 2022
Author: Florian Mayer
Date: 2022-06-08T14:28:58-07:00
New Revision: f6b1bfb7d5cc5201f5910c7e11766abc279a1f7a
URL: https://github.com/llvm/llvm-project/commit/f6b1bfb7d5cc5201f5910c7e11766abc279a1f7a
DIFF: https://github.com/llvm/llvm-project/commit/f6b1bfb7d5cc5201f5910c7e11766abc279a1f7a.diff
LOG: [ELF] Support 'G' in .eh_frame
Reviewed By: MaskRay, eugenis
Differential Revision: https://reviews.llvm.org/D127148
Added:
lld/test/ELF/stack-tagging-cfi.s
Modified:
lld/ELF/EhFrame.cpp
Removed:
################################################################################
diff --git a/lld/ELF/EhFrame.cpp b/lld/ELF/EhFrame.cpp
index 794fe04346a99..f2fc99fe350c0 100644
--- a/lld/ELF/EhFrame.cpp
+++ b/lld/ELF/EhFrame.cpp
@@ -171,7 +171,7 @@ uint8_t EhReader::getFdeEncoding() {
readByte();
else if (c == 'P')
skipAugP();
- else if (c != 'B' && c != 'S')
+ else if (c != 'B' && c != 'S' && c != 'G')
failOn(aug.data(), "unknown .eh_frame augmentation string: " + aug);
}
return DW_EH_PE_absptr;
@@ -188,7 +188,7 @@ bool EhReader::hasLSDA() {
skipAugP();
else if (c == 'R')
readByte();
- else if (c != 'B' && c != 'S')
+ else if (c != 'B' && c != 'S' && c != 'G')
failOn(aug.data(), "unknown .eh_frame augmentation string: " + aug);
}
return false;
diff --git a/lld/test/ELF/stack-tagging-cfi.s b/lld/test/ELF/stack-tagging-cfi.s
new file mode 100644
index 0000000000000..82ed2f5a9d923
--- /dev/null
+++ b/lld/test/ELF/stack-tagging-cfi.s
@@ -0,0 +1,19 @@
+# REQUIRES: aarch64
+
+# RUN: llvm-mc -filetype=obj -triple aarch64 -mattr=+mte %s -o %t.o
+# RUN: ld.lld --eh-frame-hdr %t.o -o %t
+# RUN: llvm-objdump --dwarf=frames %t | FileCheck %s
+
+# CHECK: Augmentation: "zRG"
+
+ .text
+ .globl WithUnwind
+ .p2align 2
+ .type WithUnwind, at function
+WithUnwind:
+ .cfi_startproc
+ .cfi_mte_tagged_frame
+ ret
+.Lfunc_end0:
+ .size WithUnwind, .Lfunc_end0-WithUnwind
+ .cfi_endproc
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