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9d9dd861e9
Since commit 43127ae571 ("Fix gdb.base/step-indirect-call-thunk.exp") I run
into:
...
gdb compile failed, gcc: error: unrecognized command line option \
'-fcf-protection=none'; did you mean '-flto-partition=none'?
UNTESTED: gdb.base/step-indirect-call-thunk.exp: failed to prepare
...
The problem is that -fcf-protection is supported starting gcc 8, but I'm using
system gcc 7.5.0.
Fix this by only adding -fcf-protection=none for gcc 8 and later.
Tested on x86_64-linux, with gcc 7.5.0, 8.2.1 and 12.1.1.
84 lines
2.7 KiB
Plaintext
84 lines
2.7 KiB
Plaintext
# Copyright 2018-2022 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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standard_testfile
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if { ![istarget "x86*"] } {
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return
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}
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set cflags "-mindirect-branch=thunk -mfunction-return=thunk"
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if { [gcc_major_version] >= 8 } {
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append cflags " -fcf-protection=none"
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}
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if { [prepare_for_testing "failed to prepare" $testfile $srcfile \
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[list debug "additional_flags=$cflags"]] } {
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return -1
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}
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if { ![runto_main] } {
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return -1
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}
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# Do repeated instruction steps in order to reach TARGET from CURRENT
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#
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# CURRENT is a string matching the current location
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# TARGET is a string matching the target location
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# TEST is the test name
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#
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# The function issues repeated "stepi" commands as long as the location
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# matches CURRENT up to a maximum of 100 steps.
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#
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# TEST passes if the resulting location matches TARGET and fails
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# otherwise.
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#
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proc stepi_until { current target test } {
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global gdb_prompt
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set count 0
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gdb_test_multiple "stepi" "$test" {
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-re "$current.*$gdb_prompt $" {
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incr count
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if { $count < 100 } {
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send_gdb "stepi\n"
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exp_continue
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} else {
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fail "$test"
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}
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}
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-re "$target.*$gdb_prompt $" {
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pass "$test"
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}
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}
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}
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# Normal stepping steps through all thunks.
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gdb_test "step" "thrice\.2.*" "step into thrice"
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gdb_test "next" "thrice\.3.*" "step through thunks and over inc"
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gdb_test "step" "inc\.2.*" "step through call thunk into inc"
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gdb_test "step" "inc\.3.*" "step inside inc"
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gdb_test "step" "thrice\.4.*" "step through return thunk back into thrice"
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set alphanum_re "\[a-zA-Z0-9\]"
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set pic_thunk_re "__$alphanum_re*\\.get_pc_thunk\\.$alphanum_re* \\(\\)"
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# We can use instruction stepping to step into thunks.
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stepi_until "thrice" "indirect_thunk" "stepi into call thunk"
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stepi_until "indirect_thunk" "inc." "stepi out of call thunk into inc"
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stepi_until "(inc|$pic_thunk_re)" "return_thunk" "stepi into return thunk"
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stepi_until "return_thunk" "thrice" \
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"stepi out of return thunk back into thrice"
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