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https://sourceware.org/git/binutils-gdb.git
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42a4f53d2b
This commit applies all changes made after running the gdb/copyright.py script. Note that one file was flagged by the script, due to an invalid copyright header (gdb/unittests/basic_string_view/element_access/char/empty.cc). As the file was copied from GCC's libstdc++-v3 testsuite, this commit leaves this file untouched for the time being; a patch to fix the header was sent to gcc-patches first. gdb/ChangeLog: Update copyright year range in all GDB files.
287 lines
9.0 KiB
Plaintext
287 lines
9.0 KiB
Plaintext
# This testcase is part of GDB, the GNU debugger.
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# Copyright 2011-2019 Free Software Foundation, Inc.
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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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set syscall_insn ""
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# Define the syscall instruction for each target.
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if { [istarget "i\[34567\]86-*-linux*"] || [istarget "x86_64-*-linux*"] } {
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set syscall_insn "\[ \t\](int|syscall|sysenter)\[ \t\]"
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} elseif { [istarget "aarch64*-*-linux*"] || [istarget "arm*-*-linux*"] } {
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set syscall_insn "\[ \t\](swi|svc)\[ \t\]"
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} else {
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return -1
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}
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proc check_pc_after_cross_syscall { syscall syscall_insn_next_addr } {
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set syscall_insn_next_addr_found [get_hexadecimal_valueof "\$pc" "0"]
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set test "single step over $syscall final pc"
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if {$syscall_insn_next_addr != 0
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&& $syscall_insn_next_addr == $syscall_insn_next_addr_found} {
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pass $test
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} else {
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fail $test
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}
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}
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# Restart GDB and set up the test. Return a list in which the first one
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# is the address of syscall instruction and the second one is the address
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# of the next instruction address of syscall instruction. If anything
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# wrong, the two elements of list are -1.
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proc setup { syscall } {
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global gdb_prompt syscall_insn
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set testfile "step-over-$syscall"
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clean_restart $testfile
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if { ![runto main] } then {
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fail "run to main ($syscall)"
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return -1
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}
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# Delete the breakpoint on main.
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gdb_test_no_output "delete break 1"
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gdb_test_no_output "set displaced-stepping off"
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gdb_test "break $syscall" "Breakpoint \[0-9\]* at .*"
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gdb_test "continue" "Continuing\\..*Breakpoint \[0-9\]+, (.* in |__libc_|)$syscall \\(\\).*" \
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"continue to $syscall (1st time)"
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# Hit the breakpoint on $syscall for the first time. In this time,
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# we will let PLT resolution done, and the number single steps we will
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# do later will be reduced.
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gdb_test "continue" "Continuing\\..*Breakpoint \[0-9\]+, (.* in |__libc_|)$syscall \\(\\).*" \
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"continue to $syscall (2nd time)"
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# Hit the breakpoint on $syscall for the second time. In this time,
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# the address of syscall insn and next insn of syscall are recorded.
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gdb_test "display/i \$pc" ".*"
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# Single step until we see a syscall insn or we reach the
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# upper bound of loop iterations.
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set msg "find syscall insn in $syscall"
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set steps 0
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set max_steps 1000
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gdb_test_multiple "stepi" $msg {
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-re ".*$syscall_insn.*$gdb_prompt $" {
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pass $msg
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}
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-re "x/i .*=>.*\r\n$gdb_prompt $" {
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incr steps
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if {$steps == $max_steps} {
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fail $msg
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} else {
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send_gdb "stepi\n"
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exp_continue
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}
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}
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}
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if {$steps == $max_steps} {
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return { -1, -1 }
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}
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set syscall_insn_addr [get_hexadecimal_valueof "\$pc" "0"]
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if {[gdb_test "stepi" "x/i .*=>.*" "stepi $syscall insn"] != 0} {
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return { -1, -1 }
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}
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return [list $syscall_insn_addr [get_hexadecimal_valueof "\$pc" "0"]]
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}
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proc step_over_syscall { syscall } {
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with_test_prefix "$syscall" {
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global syscall_insn
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global gdb_prompt
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set testfile "step-over-$syscall"
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if [build_executable ${testfile}.exp ${testfile} ${testfile}.c {debug}] {
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untested "failed to compile"
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return -1
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}
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foreach_with_prefix displaced {"off" "on"} {
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if {$displaced == "on" && ![support_displaced_stepping]} {
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continue
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}
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if { $displaced == "on" && $syscall == "clone" } {
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# GDB doesn't support stepping over clone syscall with
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# displaced stepping.
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kfail "gdb/19675" "single step over clone"
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continue
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}
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set ret [setup $syscall]
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set syscall_insn_addr [lindex $ret 0]
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set syscall_insn_next_addr [lindex $ret 1]
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if { $syscall_insn_addr == -1 } {
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return -1
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}
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gdb_test "continue" "Continuing\\..*Breakpoint \[0-9\]+, (.* in |__libc_|)$syscall \\(\\).*" \
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"continue to $syscall (3rd time)"
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# Hit the breakpoint on $syscall for the third time. In this time, we'll set
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# breakpoint on the syscall insn we recorded previously, and single step over it.
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set syscall_insn_bp 0
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gdb_test_multiple "break \*$syscall_insn_addr" "break on syscall insn" {
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-re "Breakpoint (\[0-9\]*) at .*$gdb_prompt $" {
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set syscall_insn_bp $expect_out(1,string)
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pass "break on syscall insns"
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}
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}
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gdb_test "continue" "Continuing\\..*Breakpoint \[0-9\]+, .*" \
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"continue to syscall insn $syscall"
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gdb_test_no_output "set displaced-stepping $displaced"
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# Check the address of next instruction of syscall.
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if {[gdb_test "stepi" "x/i .*=>.*" "single step over $syscall"] != 0} {
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return -1
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}
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check_pc_after_cross_syscall $syscall $syscall_insn_next_addr
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# Delete breakpoint syscall insns to avoid interference to other syscalls.
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delete_breakpoints
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gdb_test "break marker" "Breakpoint.*at.* file .*${testfile}.c, line.*"
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gdb_test "continue" "Continuing\\..*Breakpoint \[0-9\]+, marker \\(\\) at.*" \
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"continue to marker ($syscall)"
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}
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}
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}
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# Set a breakpoint with a condition that evals false on syscall
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# instruction. In fact, it tests GDBserver steps over syscall
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# instruction. SYSCALL is the syscall the program calls.
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# FOLLOW_FORK is either "parent" or "child". DETACH_ON_FORK is
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# "on" or "off".
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proc break_cond_on_syscall { syscall follow_fork detach_on_fork } {
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with_test_prefix "break cond on target : $syscall" {
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set testfile "step-over-$syscall"
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set ret [setup $syscall]
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set syscall_insn_addr [lindex $ret 0]
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set syscall_insn_next_addr [lindex $ret 1]
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if { $syscall_insn_addr == -1 } {
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return -1
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}
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gdb_test "continue" "Continuing\\..*Breakpoint \[0-9\]+, (.* in |__libc_|)$syscall \\(\\).*" \
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"continue to $syscall"
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# Delete breakpoint syscall insns to avoid interference with other syscalls.
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delete_breakpoints
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gdb_test "set follow-fork-mode $follow_fork"
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gdb_test "set detach-on-fork $detach_on_fork"
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# Create a breakpoint with a condition that evals false.
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gdb_test "break \*$syscall_insn_addr if main == 0" \
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"Breakpoint \[0-9\]* at .*"
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if { $syscall == "clone" } {
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# Create a breakpoint in the child with the condition that
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# evals false, so that GDBserver can get the event from the
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# child but GDB doesn't see it. In this way, we don't have
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# to adjust the test flow for "clone".
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# This is a regression test for PR server/19736. In this way,
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# we can test that GDBserver gets an event from the child and
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# set suspend count correctly while the parent is stepping over
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# the breakpoint.
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gdb_test "break clone_fn if main == 0"
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}
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if { $syscall == "clone" } {
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# follow-fork and detach-on-fork only make sense to
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# fork and vfork.
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gdb_test "break marker" "Breakpoint.*at.* file .*${testfile}.c, line.*"
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gdb_test "continue" "Continuing\\..*Breakpoint \[0-9\]+, marker \\(\\) at.*" \
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"continue to marker"
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} else {
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if { $follow_fork == "child" } {
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gdb_test "continue" "exited normally.*" "continue to end of inf 2"
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if { $detach_on_fork == "off" } {
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gdb_test "inferior 1"
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gdb_test "break marker" "Breakpoint.*at.*"
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gdb_test "continue" "Continuing\\..*Breakpoint \[0-9\]+, marker \\(\\) at.*" \
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"continue to marker"
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}
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} else {
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gdb_test "break marker" "Breakpoint.*at.* file .*${testfile}.c, line.*"
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gdb_test "continue" "Continuing\\..*Breakpoint \[0-9\]+, marker \\(\\) at.*" \
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"continue to marker"
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}
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}
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}
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}
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step_over_syscall "fork"
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step_over_syscall "vfork"
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step_over_syscall "clone"
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set testfile "step-over-fork"
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clean_restart $testfile
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if { ![runto main] } then {
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fail "run to main"
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return -1
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}
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set cond_bp_target 1
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set test "set breakpoint condition-evaluation target"
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gdb_test_multiple $test $test {
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-re "warning: Target does not support breakpoint condition evaluation.\r\nUsing host evaluation mode instead.\r\n$gdb_prompt $" {
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# Target doesn't support breakpoint condition
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# evaluation on its side.
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set cond_bp_target 0
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}
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-re "^$test\r\n$gdb_prompt $" {
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}
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}
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if { $cond_bp_target } {
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foreach_with_prefix detach-on-fork {"on" "off"} {
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foreach_with_prefix follow-fork {"parent" "child"} {
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foreach syscall { "fork" "vfork" "clone" } {
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if { $syscall == "vfork"
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&& ${follow-fork} == "parent"
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&& ${detach-on-fork} == "off" } {
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# Both vforked child process and parent process are
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# under GDB's control, but GDB follows the parent
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# process only, which can't be run until vforked child
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# finishes. Skip the test in this scenario.
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continue
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}
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break_cond_on_syscall $syscall ${follow-fork} ${detach-on-fork}
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}
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}
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}
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}
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