98 lines
2.5 KiB
Text
98 lines
2.5 KiB
Text
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# Copyright (C) 2016-2022 Free Software Foundation, Inc.
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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if { ![is_aarch32_target] } {
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verbose "Skipping ${gdb_test_file_name}."
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return
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}
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standard_testfile
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if { [prepare_for_testing "failed to prepare" ${testfile} ${srcfile} \
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[list debug]] } {
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return -1
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}
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if { ![runto_main] } {
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return -1
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}
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# Check kernel helpers are supported or not.
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set kernel_helper_supported 0
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gdb_test_multiple "p *kernel_user_helper_version" \
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"check kernel helper version" {
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-re " = ($decimal)\r\n$gdb_prompt $" {
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if { $expect_out(1,string) >= 1 } {
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set kernel_helper_supported 1
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}
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}
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}
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if { !$kernel_helper_supported } {
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unsupported "kernel doesn't have helpers"
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return 0
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}
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# Get the instruction branching to kernel helper, they can be
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# blx rN or bx rN.
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set branch_to_kernel_helper 0
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set branch_insn "bl?x\[ \t\]*r${decimal}"
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set test "disassemble main"
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gdb_test_multiple $test $test {
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-re ".*($hex) <\\+$decimal>:\[ \t\]+$branch_insn" {
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set branch_to_kernel_helper $expect_out(1,string)
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exp_continue
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}
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-re ".*$gdb_prompt $" {
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}
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}
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if { ![gdb_assert $branch_to_kernel_helper \
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"find instruction branch to kernel helper"] } {
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return
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}
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with_test_prefix "single-step" {
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gdb_breakpoint "*${branch_to_kernel_helper}"
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gdb_continue_to_breakpoint "branch to kernel helper"
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gdb_test "si"
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set test "bt"
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gdb_test_multiple $test $test {
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-re "#0 \[^\\r\\n\]*main .*\r\n$gdb_prompt $" {
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# Test that the program still stops in main rather than
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# somewhere else.
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pass $test
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}
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-re "#0 0xffff0fe0 .*\r\n$gdb_prompt $" {
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# AArch64 linux kernel can do hardware single step, so
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# the program can stop at kernel helper.
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pass $test
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}
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}
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delete_breakpoints
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}
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with_test_prefix "cond-breakpoint" {
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gdb_breakpoint "*${branch_to_kernel_helper} if i > 5"
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gdb_continue_to_breakpoint "branch to kernel helper"
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gdb_test "p i" " = 6"
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delete_breakpoints
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}
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