forked from Imagelibrary/binutils-gdb
831517df13
hbreak-unmapped.exp assumes that memory at address 0 is unmapped or unreadable, but on bare metal or uclinux targets, memory at address 0 is readable. For example, on arm-none-eabi, the vector table base address is 0x0. hbreak *0^M Hardware assisted breakpoint 3 at 0x0: file /scratch/yqi/arm-none-eabi-lite/obj/cs3-2014.11-999999-arm-none-eabi-i686-pc-linux-gnu/generated/arm-vector.S, line 25.^M (gdb) FAIL: gdb.base/hbreak-unmapped.exp: hbreak *0 info break^M Num Type Disp Enb Address What^M 3 hw breakpoint keep y 0x00000000 /scratch/yqi/arm-none-eabi-lite/obj/cs3-2014.11-999999-arm-none-eabi-i686-pc-linux-gnu/generated/arm-vector.S:25^M (gdb) FAIL: gdb.base/hbreak-unmapped.exp: info break shows hw breakpoint delete $bpnum This patch is to check whether address 0 is readable via command 'x 0'. If it is, skip the test. gdb/testsuite: 2014-06-06 Yao Qi <yao@codesourcery.com> * gdb.base/hbreak-unmapped.exp: Read memory at address 0. If readable, skip the test.
83 lines
2.4 KiB
Plaintext
83 lines
2.4 KiB
Plaintext
# Copyright 2014 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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if {[skip_hw_breakpoint_tests]} {
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return 0
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}
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standard_testfile
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if {[prepare_for_testing "failed to prepare" ${testfile} ${srcfile}]} {
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return -1
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}
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if ![runto_main] {
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fail "Can't run to main"
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return -1
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}
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# If we can read the memory at address 0, skip the test.
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gdb_test_multiple "x 0" "memory at address 0" {
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-re "0x0:.*Cannot access memory at address 0x0.*$gdb_prompt $" { }
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-re "0x0:.*Error accessing memory address 0x0.*$gdb_prompt $" { }
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-re ".*$gdb_prompt $" {
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untested "Memory at address 0 is readable"
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return
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}
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}
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delete_breakpoints
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# Test whether the target supports hardware breakpoints at all.
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set supports_hbreak 0
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set test "probe hardware breakpoint 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 $test
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}
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-re "Hardware assisted breakpoint.*at.* file .*$srcfile, line.*$gdb_prompt $" {
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set supports_hbreak 1
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pass $test
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}
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}
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if {!$supports_hbreak} {
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unsupported "hardware breakpoints"
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return
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}
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delete_breakpoints
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# Force immediate breakpoint insertion.
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gdb_test_no_output "set breakpoint always-inserted on"
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# Hardware breakpoints are implemented using a mechanism that is not
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# dependent on being able to modify the target's memory, we should be
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# able to set them even in unmapped memory areas.
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gdb_test "hbreak *0" "Hardware assisted breakpoint \[0-9\]+ at 0x0"
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gdb_test "info break" "hw breakpoint.*y.*0x0\+\[ \t\]\+" \
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"info break shows hw breakpoint"
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gdb_test_no_output "delete \$bpnum" "" "delete" \
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"delete hw breakpoint"
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gdb_test "info break" "No breakpoints or watchpoints\." \
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"info break shows no breakpoints"
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