93 lines
2.4 KiB
Text
93 lines
2.4 KiB
Text
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# Copyright (C) 2015 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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# Test that GDB can step past a breakpoint even if GDB doesn't have
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# symbols for the main binary. PR gdb/13858.
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standard_testfile start.c
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if { [build_executable "failed to build" ${testfile} $srcfile] } {
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return -1
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}
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# Get the current PC. MSG is used as test message.
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proc get_pc { msg } {
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global hex gdb_prompt
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set addr ""
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gdb_test_multiple "p /x \$pc" "$msg" {
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-re " = ($hex).*$gdb_prompt $" {
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set addr $expect_out(1,string)
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pass "$msg"
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}
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}
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return $addr
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}
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# Test stepping past a breakpoint with no symbols. DISPLACED is one
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# of the "set displaced-stepping" options. If GDB can't find where to
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# put the scratch pad, GDB should be able to fall back to stepping
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# past the breakpoint using an in-line step-over.
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proc test_step_over { displaced } {
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global hex
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global binfile
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clean_restart $binfile
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if ![runto_main] {
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fail "couldn't run to main"
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untested "stepping over breakpoint with displaced=$displaced"
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return -1
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}
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delete_breakpoints
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set msg "purging symbols"
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gdb_test_multiple "file" "$msg" {
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-re "Are you sure you want to change the file.*y or n. $" {
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send_gdb "y\n"
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exp_continue
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}
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-re "Discard symbol table.*y or n. $" {
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gdb_test "y" "No symbol file now." "$msg"
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}
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}
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set before_addr [get_pc "get before PC"]
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gdb_test "break *\$pc" "Breakpoint .* at $hex"
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gdb_test_no_output "set displaced-stepping $displaced"
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gdb_test "stepi" "$hex in \?\? .*"
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set after_addr [get_pc "get after PC"]
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gdb_assert {$before_addr != $after_addr} "advanced"
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}
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foreach displaced { "off" "on" "auto" } {
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if { $displaced != "off" && ![support_displaced_stepping] } {
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continue
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}
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with_test_prefix "displaced=$displaced" {
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test_step_over $displaced
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}
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}
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