mirror of
https://github.com/espressif/binutils-gdb.git
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213516ef31
This commit is the result of running the gdb/copyright.py script, which automated the update of the copyright year range for all source files managed by the GDB project to be updated to include year 2023.
136 lines
4.1 KiB
Plaintext
136 lines
4.1 KiB
Plaintext
# Copyright 2021-2023 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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# Check that the unwinder produces consistent frame info, by making
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# sure that "info frame" shows the same result when stopped at a
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# function (level == 0), compared to when we find the same frame in
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# the stack at a level > 0. Tests both the DWARF stack unwinder, and
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# the fallback heuristic unwinder.
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standard_testfile backtrace.c
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if { [build_executable "failed to prepare" $testfile $srcfile] } {
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return -1
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}
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# Unwind to each function in FRAMES, and compare "info frame" output
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# to what was saved in the 'info_frame_before' array.
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proc compare_frames {frames} {
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foreach_with_prefix compare_frame $frames {
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if {[gdb_test \
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"frame function $compare_frame" \
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" $compare_frame .*"] != 0} {
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continue
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}
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set info_frame_after ""
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gdb_test_multiple "info frame" "" {
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-re "(.*\r\n$::gdb_prompt $)" {
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set info_frame_after $expect_out(1,string)
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pass $gdb_test_name
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}
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}
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# Nuke the PC address, since it'll be different. The
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# first time it's the actual PC before the call, the
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# second time it's the resume address after the call
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# returns.
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# E.g., on x86-64:
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# rip = 0x555555555168 in main (gdb.base/backtrace.c:41); saved rip = 0x7ffff7dd90b3
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# vs
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# rip = 0x555555555172 in main (gdb.base/backtrace.c:41); saved rip = 0x7ffff7dd90b3
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#
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set from \
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"= $::hex in $compare_frame "
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set to \
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"= \$hex in $compare_frame "
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regsub $from $::info_frame_before($compare_frame) $to \
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::info_frame_before($compare_frame)
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regsub $from $info_frame_after $to \
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info_frame_after
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# Remove the "caller of frame at" line, which didn't
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# appear the first time, since the frame hadn't called any
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# other function yet then.
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regsub "\r\n caller of frame at $::hex\r\n" \
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$info_frame_after "\r\n" \
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info_frame_after
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regsub ", caller of frame at $::hex" \
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$info_frame_after "" \
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info_frame_after
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# "Stack level 0/1/2/3" -> "Stack level N"
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set from \
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"Stack level $::decimal"
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set to \
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"Stack level N"
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regsub $from $::info_frame_before($compare_frame) $to \
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::info_frame_before($compare_frame)
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regsub $from $info_frame_after $to \
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info_frame_after
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# For debugging.
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verbose -log "BEFORE:\n$::info_frame_before($compare_frame)"
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verbose -log "AFTER:\n$info_frame_after"
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gdb_assert {[string match \
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$::info_frame_before($compare_frame)\
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$info_frame_after]} \
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"info frame before/after match"
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}
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}
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proc test {dwarf_unwinder} {
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clean_restart $::binfile
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gdb_test_no_output "maint set dwarf unwinder $dwarf_unwinder"
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if {![runto_main]} {
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return 0
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}
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array unset ::info_frame_before
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# Run to each function, and record "info frame" output in the
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# 'info_frame_before' array. At each stop, unwind to each
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# already-recorded function, and compare "info frame" output to
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# what was saved in the 'info_frame_before' array.
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set funcs {"main" "foo" "bar" "baz"}
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set idx_funcs 0
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foreach_with_prefix stop_func $funcs {
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if {$idx_funcs != 0} {
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gdb_breakpoint $stop_func
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gdb_continue_to_breakpoint ".*$stop_func \(\).*"
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}
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set ::info_frame_before($stop_func) ""
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gdb_test_multiple "info frame" "" {
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-re "(.*\r\n$::gdb_prompt $)" {
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set ::info_frame_before($stop_func) $expect_out(1,string)
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pass $gdb_test_name
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}
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}
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if {$idx_funcs != 0} {
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compare_frames [lreverse [lrange $funcs 0 $idx_funcs-1]]
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}
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incr idx_funcs
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}
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}
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foreach_with_prefix dwarf {"off" "on"} {
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test $dwarf
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}
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