gdb/testsuite/gdb.arch/aarch64-unwind-pc.exp

   1 # Copyright 2022-2024 Free Software Foundation, Inc.
   2
   3 # This program is free software; you can redistribute it and/or modify
   4 # it under the terms of the GNU General Public License as published by
   5 # the Free Software Foundation; either version 3 of the License, or
   6 # (at your option) any later version.
   7 #
   8 # This program is distributed in the hope that it will be useful,
   9 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  10 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  11 # GNU General Public License for more details.
  12 #
  13 # You should have received a copy of the GNU General Public License
  14 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
  15
  16 # This file is part of the gdb testsuite.
  17
  18 # Test explicitly unwinding the PC DWARF register on aarch64
  19
  20 require is_aarch64_target
  21
  22 standard_testfile .S
  23
  24 if { [prepare_for_testing "failed to prepare" $testfile $srcfile] } {
  25     return -1
  26 }
  27
  28 if ![runto_main] {
  29     return -1
  30 }
  31
  32 proc test_reg_vals {} {
  33     gdb_test "p \$pc - &main" "= 8" "p \$pc"
  34     gdb_test "p/x \$x30" "= 0x1234" "p \$x30"
  35 }
  36
  37 proc test_unwind_pc { inst } {
  38     gdb_test "si" "$inst" "single step"
  39     gdb_test "backtrace" \
  40         ".*#1.*in main ().*" \
  41         "backtrace"
  42     gdb_test "up" "in main ().*" "parent frame"
  43     test_reg_vals
  44 }
  45
  46 # Ready to enter the function
  47 gdb_test "si" "bl test_func" "call site"
  48 # Step through the 3 instructions in the function to make sure that
  49 # we have the same unwind info throughout.
  50 with_test_prefix "1st stepi" {
  51     test_unwind_pc "mov     x0, x30"
  52 }
  53 with_test_prefix "2nd stepi" {
  54     test_unwind_pc "mov     x30, 0x1234"
  55 }
  56 with_test_prefix "3rd stepi" {
  57     test_unwind_pc "ret     x0"
  58 }
  59 # Check again after we returned
  60 with_test_prefix "final" {
  61     # Check that we've stepped out (si prints out the new function name)
  62     gdb_test "si" ".*main *().*" "single step out"
  63     gdb_test "backtrace" \
  64         "#0\[\t \]+main ().*" \
  65         "backtrace"
  66     test_reg_vals
  67 }