120 lines
3.7 KiB
Text
120 lines
3.7 KiB
Text
# Copyright 2014-2015 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 trying to inserting a hw breakpoint in a shared library
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# when the target doesn't support hw breakpoints doesn't silently
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# error out without informing the user.
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if {[skip_shlib_tests]} {
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return -1
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}
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set main_src hbreak-in-shr-unsupported.c
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set lib_src hbreak-in-shr-unsupported-shr.c
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standard_testfile ${main_src} ${lib_src}
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set lib_basename hbreak-in-shr-unsupported-shr.so
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set lib_so [standard_output_file ${lib_basename}]
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set lib_opts "debug"
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set exec_opts [list debug shlib=${lib_so}]
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if [get_compiler_info] {
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return -1
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}
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if { [gdb_compile_shlib ${srcdir}/${subdir}/${lib_src} ${lib_so} $lib_opts] != ""
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|| [gdb_compile ${srcdir}/${subdir}/${main_src} ${binfile} executable $exec_opts] != ""} {
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untested "Could not compile ${subdir}/$lib_src or ${subdir}/$srcfile."
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return -1
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}
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clean_restart $binfile
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gdb_load_shlibs $lib_so
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if ![runto_main] then {
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fail "Can't run to main"
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return -1
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}
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set is_target_remote [gdb_is_target_remote]
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# Get main breakpoint out of the way.
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delete_breakpoints
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# Easier to test if GDB inserts breakpoints immediately.
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gdb_test_no_output "set breakpoint always-inserted on"
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# Force-disable Z1 packets, in case the target actually supports
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# these.
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if {$is_target_remote} {
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gdb_test_no_output "set remote Z-packet off"
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}
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# Probe for hw breakpoints support. With Z packets disabled, this
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# should always fail with remote targets. For other targets, with no
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# way to force-disable hw breakpoints support, best we can do is skip
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# the remainder of the test if hardware breakpoint insertion in a
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# function in the main executable succeeds.
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set cant_insert_hbreak 0
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set supports_hbreak 0
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set test "probe hbreak support"
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gdb_test_multiple "hbreak main" $test {
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-re "No hardware breakpoint support in the target.*$gdb_prompt $" {
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pass $test
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}
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-re "Hardware breakpoints used exceeds limit.*$gdb_prompt $" {
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pass $test
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}
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-re "Cannot insert hardware breakpoint.*$gdb_prompt $" {
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set cant_insert_hbreak 1
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set supports_hbreak 1
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pass $test
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}
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-re "Hardware assisted breakpoint.*at.* file .*$srcfile, line.*$gdb_prompt $" {
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set supports_hbreak 1
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if {$is_target_remote} {
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# Z-packets have been force-disabled, so this shouldn't
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# happen.
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fail $test
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} else {
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pass $test
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}
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}
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}
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if {!$supports_hbreak} {
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unsupported "no hbreak support"
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return
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}
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if {!$cant_insert_hbreak} {
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unsupported "can't disable hw breakpoint support"
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return
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}
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# Get previous hw breakpoint out of the way.
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delete_breakpoints
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# Without target support, this should always complain. GDB used to
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# suppress the error if the breakpoint was set in a shared library.
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# While that makes sense for software breakpoints (the memory might be
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# unmapped), it doesn't for hardware breakpoints, as those by
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# definition are implemented using a mechanism that is not dependent
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# on being able to modify the target's memory.
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gdb_test "hbreak shrfunc" "Cannot insert hardware breakpoint.*" \
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"hbreak shrfunc complains"
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gdb_test "info break" "hw breakpoint.*y.*$hex.*in shrfunc at.*" \
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"breakpoint not pending"
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