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61baf725ec
This applies the second part of GDB's End of Year Procedure, which
updates the copyright year range in all of GDB's files.
gdb/ChangeLog:
Update copyright year range in all GDB files.
150 lines
4.2 KiB
Plaintext
150 lines
4.2 KiB
Plaintext
# Copyright 2014-2017 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 when following an exec, we don't try to insert breakpoints
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# in the new image at the addresses the symbols had before the exec.
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standard_testfile
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# Build two copies of the program, each linked at a different address.
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# The address of "main" in the first binary should end up being an
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# unmapped address in the second binary.
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set objfile ${binfile}.o
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set exec1 ${binfile}1
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set exec2 ${binfile}2
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if { [gdb_compile [file join $srcdir $subdir $srcfile] $objfile \
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object [list debug]] != "" } {
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untested "failed to compile"
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return -1
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}
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set opts1_ld [list debug ldflags=-Wl,-Ttext-segment=0x1000000]
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set opts1_gold [list debug ldflags=-Wl,-Ttext=0x1000000]
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set opts2_ld [list debug ldflags=-Wl,-Ttext-segment=0x2000000]
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set opts2_gold [list debug ldflags=-Wl,-Ttext=0x2000000]
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if { [gdb_compile $objfile $exec1 executable $opts1_ld] != "" } {
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# Old gold linker versions don't support -Ttext-segment. Fall
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# back to -Ttext.
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if { [gdb_compile $objfile $exec1 executable $opts1_gold] != ""
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|| [gdb_compile $objfile $exec2 executable $opts2_gold] != ""} {
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untested "link failed"
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return -1
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}
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} elseif { [gdb_compile $objfile $exec2 executable $opts2_ld] != "" } {
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untested "link failed"
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return -1
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}
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# First check whether the address of "main" in exec1 is readable in
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# exec2. If it is, then skip the test as unsupported.
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clean_restart ${exec1}
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if ![runto_main] then {
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fail "couldn't run to main"
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return -1
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}
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set addr ""
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set test "main address first"
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gdb_test_multiple "p/x &main" $test {
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-re " = (0x\[0-9a-f\]+)\r\n$gdb_prompt $" {
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set addr $expect_out(1,string)
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pass $test
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}
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}
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clean_restart ${exec2}
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if ![runto_main] then {
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fail "couldn't run to main"
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return -1
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}
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set cannot_access 0
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set test "probe memory access"
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gdb_test_multiple "x $addr" $test {
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-re "Cannot access memory at address .*$gdb_prompt $" {
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set cannot_access 1
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pass $test
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}
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-re ".*$gdb_prompt $" {
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pass $test
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}
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}
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if {!$cannot_access} {
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unsupported "main address is readable in second binary"
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return
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}
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# The test proper. ALWAYS_INSERTED indicates whether testing in
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# "breakpoint always-inserted" mode.
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proc test { always_inserted } {
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global exec1
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global gdb_prompt
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clean_restart ${exec1}
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gdb_test_no_output "set breakpoint always-inserted $always_inserted"
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if ![runto_main] then {
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fail "couldn't run to main"
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return -1
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}
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# Set a second breakpoint (whose original address also ends up
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# unmmapped after the exec), for PR 19548.
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gdb_test "break some_function" "Breakpoint .*"
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# PR17431: with always-inserted on, we'd see:
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# (gdb) continue
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# Continuing.
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# Warning:
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# Cannot insert breakpoint 1.
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# Cannot access memory at address 0x10000ff
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# PR 19548: with more than one breakpoint, we'd see:
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# (gdb) continue
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# Continuing.
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# process (...) is executing new program: (...)/execl-update-breakpoints2
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# Error in re-setting breakpoint 1: Warning:
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# Cannot insert breakpoint 2.
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# Cannot access memory at address 0x1000764
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set not_nl "\[^\r\n\]*"
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set regex ""
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append regex \
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"^continue\r\n" \
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"Continuing\\.\r\n" \
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"${not_nl} is executing new program: ${not_nl}\r\n" \
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"(Reading ${not_nl} from remote target\\.\\.\\.\r\n)*" \
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"\r\n" \
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"Breakpoint 1, main.*$gdb_prompt $"
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set message "continue across exec"
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gdb_test_multiple "continue" $message {
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-re $regex {
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pass $message
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}
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}
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}
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foreach always_inserted { "off" "on" } {
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with_test_prefix "always-inserted $always_inserted" {
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test $always_inserted
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}
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}
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