Revert "[libunwind][AArch64] Add support for DWARF expression for RA_SIGN_STATE."

This reverts commit f6366ef7f4f3cf1182fd70e0c50a9fa54374b612.

1 files changed, 0 insertions, 63 deletions

diff --git a/libunwind/test/aarch64.ra_sign_state.pass.cpp b/libunwind/test/aarch64.ra_sign_state.pass.cpp
deleted file mode 100644
index 1e09c93..0000000
--- a/libunwind/test/aarch64.ra_sign_state.pass.cpp
+++ /dev/null
@@ -1,63 +0,0 @@
-// -*- C++ -*-
-//===----------------------------------------------------------------------===//
-//
-// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
-// See https://llvm.org/LICENSE.txt for license information.
-// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
-//
-//===----------------------------------------------------------------------===//
-
-// REQUIRES: linux && target={{aarch64-.+}}
-
-// This test ensures the .cfi_negate_ra_state the RA_SIGN_STATE pseudo register
-// could be set directly set by a DWARF expression and the unwinder handles it
-// correctly. The two directives can't be mixed in one CIE/FDE sqeuence.
-
-#include <stdlib.h>
-
-__attribute__((noinline, target("branch-protection=pac-ret+leaf")))
-void bar() {
-  // ".cfi_negate_ra_state" is emitted by the compiler.
-  throw 1;
-}
-
-__attribute__((noinline, target("branch-protection=none")))
-void foo() {
-  // Here a DWARF expression sets RA_SIGN_STATE.
-  // The LR is signed manually and stored on the stack.
-  asm volatile(
-      ".cfi_escape 0x16,"    // DW_CFA_val_expression
-                    "34,"    // REG_34(RA_SIGN_STATE)
-                     "1,"    // expression_length(1)
-                    "0x31\n" // DW_OP_lit1
-      "add sp, sp, 16\n"     // Restore SP's value before the stack frame is
-                             // created.
-      "paciasp\n"            // Sign the LR.
-      "str lr, [sp, -0x8]\n" // Overwrite LR on the stack.
-      "sub sp, sp, 16\n"     // Restore SP's value.
-  );
-  bar();
-  _Exit(-1);
-}
-
-__attribute__((noinline, target("branch-protection=pac-ret")))
-void bazz() {
-  // ".cfi_negate_ra_state" is emitted by the compiler.
-  try {
-    foo();
-  } catch (int i) {
-    if (i == 1)
-      throw i;
-    throw 2;
-  }
-}
-
-int main() {
-  try {
-    bazz();
-  } catch (int i) {
-    if (i == 1)
-      _Exit(0);
-  }
-  return -1;
-}