1# Copyright 2022-2023 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 20if {![is_aarch64_target]} { 21 verbose "Skipping ${gdb_test_file_name}." 22 return 23} 24 25standard_testfile .S 26 27if { [prepare_for_testing "failed to prepare" $testfile $srcfile] } { 28 return -1 29} 30 31if ![runto_main] { 32 return -1 33} 34 35proc test_reg_vals {} { 36 gdb_test "p \$pc - &main" "= 8" "p \$pc" 37 gdb_test "p/x \$x30" "= 0x1234" "p \$x30" 38} 39 40proc test_unwind_pc { inst } { 41 gdb_test "si" "$inst" "single step" 42 gdb_test "backtrace" \ 43 ".*#1.*in main ().*" \ 44 "backtrace" 45 gdb_test "up" "in main ().*" "parent frame" 46 test_reg_vals 47} 48 49# Ready to enter the function 50gdb_test "si" "bl test_func" "call site" 51# Step through the 3 instructions in the function to make sure that 52# we have the same unwind info throughout. 53with_test_prefix "1st stepi" { 54 test_unwind_pc "mov x0, x30" 55} 56with_test_prefix "2nd stepi" { 57 test_unwind_pc "mov x30, 0x1234" 58} 59with_test_prefix "3rd stepi" { 60 test_unwind_pc "ret x0" 61} 62# Check again after we returned 63with_test_prefix "final" { 64 # Check that we've stepped out (si prints out the new function name) 65 gdb_test "si" ".*main *().*" "single step out" 66 gdb_test "backtrace" \ 67 "#0\[\t \]+main ().*" \ 68 "backtrace" 69 test_reg_vals 70} 71