projects / deliverable / binutils-gdb.git / blame
| Commit | Line | Data |
|---|---|---|
| 88b9d363 | 1 | # Copyright 2014-2022 Free Software Foundation, Inc. |
| 076855f9 PA |
2 | |
| 3 | # This program is free software; you can redistribute it and/or modify | |
| 4 | # it under the terms of the GNU General Public License as published by | |
| 5 | # the Free Software Foundation; either version 3 of the License, or | |
| 6 | # (at your option) any later version. | |
| 7 | # | |
| 8 | # This program is distributed in the hope that it will be useful, | |
| 9 | # but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 10 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 11 | # GNU General Public License for more details. | |
| 12 | # | |
| 13 | # You should have received a copy of the GNU General Public License | |
| 14 | # along with this program. If not, see <http://www.gnu.org/licenses/>. | |
| 15 | ||
| 16 | if {[skip_hw_breakpoint_tests]} { | |
| 17 | return 0 | |
| 18 | } | |
| 19 | ||
| 20 | standard_testfile | |
| 21 | ||
| 22 | if {[prepare_for_testing "failed to prepare" ${testfile} ${srcfile}]} { | |
| 23 | return -1 | |
| 24 | } | |
| 25 | ||
| 26 | if ![runto_main] { | |
| bc6c7af4 | 27 | fail "can't run to main" |
| 076855f9 PA |
28 | return -1 |
| 29 | } | |
| 30 | ||
| 831517df | 31 | # If we can read the memory at address 0, skip the test. |
| 20c6f1e1 | 32 | if { [is_address_zero_readable] } { |
| bc6c7af4 | 33 | untested "memory at address 0 is readable" |
| 20c6f1e1 | 34 | return |
| 831517df YQ |
35 | } |
| 36 | ||
| 076855f9 PA |
37 | delete_breakpoints |
| 38 | ||
| 39 | # Test whether the target supports hardware breakpoints at all. | |
| 40 | ||
| 41 | set supports_hbreak 0 | |
| 42 | set test "probe hardware breakpoint support" | |
| e777225b | 43 | gdb_test_multiple "hbreak -q main" $test { |
| 076855f9 PA |
44 | -re "No hardware breakpoint support in the target.*$gdb_prompt $" { |
| 45 | pass $test | |
| 46 | } | |
| 47 | -re "Hardware breakpoints used exceeds limit.*$gdb_prompt $" { | |
| 48 | pass $test | |
| 49 | } | |
| 50 | -re "Hardware assisted breakpoint.*at.* file .*$srcfile, line.*$gdb_prompt $" { | |
| 51 | set supports_hbreak 1 | |
| 52 | pass $test | |
| 53 | } | |
| 54 | } | |
| 55 | ||
| 56 | if {!$supports_hbreak} { | |
| 57 | unsupported "hardware breakpoints" | |
| 58 | return | |
| 59 | } | |
| 60 | ||
| 61 | delete_breakpoints | |
| 62 | ||
| 63 | # Force immediate breakpoint insertion. | |
| 64 | gdb_test_no_output "set breakpoint always-inserted on" | |
| 65 | ||
| 66 | # Hardware breakpoints are implemented using a mechanism that is not | |
| 67 | # dependent on being able to modify the target's memory, we should be | |
| 68 | # able to set them even in unmapped memory areas. | |
| 69 | gdb_test "hbreak *0" "Hardware assisted breakpoint \[0-9\]+ at 0x0" | |
| 70 | ||
| 71 | gdb_test "info break" "hw breakpoint.*y.*0x0\+\[ \t\]\+" \ | |
| 72 | "info break shows hw breakpoint" | |
| 73 | ||
| 74 | gdb_test_no_output "delete \$bpnum" "" "delete" \ | |
| 75 | "delete hw breakpoint" | |
| 76 | ||
| 77 | gdb_test "info break" "No breakpoints or watchpoints\." \ | |
| 78 | "info break shows no breakpoints" |