derek.holloway
7502bf64a4
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62 lines
2.1 KiB
Plaintext
62 lines
2.1 KiB
Plaintext
# Copyright (C) 2019-2024 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 a binary with address signing works regardless of whether the target
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# supports pauth instructions. On non pauth systems, all pauth instructions
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# are treated as nops.
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require is_aarch64_target
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require {have_compile_flag -mbranch-protection=pac-ret+leaf}
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# Build program with address signing forced on.
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standard_testfile
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set compile_flags {debug}
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lappend compile_flags "additional_flags=-fno-inline"
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# Records whether the compilation was successful or not.
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set compilation_ok 0
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# We need to try a couple compilation flags here because -msign-return-address
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# was dropped at some point, but could still be supported.
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foreach pauth_flag "-mbranch-protection=pac-ret+leaf -msign-return-address=all" {
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set flags $compile_flags
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lappend flags "additional_flags=$pauth_flag"
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if {!$compilation_ok && ![prepare_for_testing "failed to prepare" ${testfile} ${srcfile} ${flags}] } {
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set compilation_ok 1
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}
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}
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# If we couldn't compile, just bail out.
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if {!$compilation_ok} {
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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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gdb_breakpoint [ gdb_get_line_number "break here" ]
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gdb_continue_to_breakpoint "break here" ".*break here.*"
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# Ensure we can get a full backtrace, despite the address signing.
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gdb_test "bt" \
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[multi_line \
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"#0\[ \t\]+bar \\(b=9\\) at \[^\r\n\]+" \
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"#1\[ \t\]+$hex (\\\[PAC\\\] )?in foo \\(a=5\\) at \[^\r\n\]+" \
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"#2\[ \t\]+$hex (\\\[PAC\\\] )?in main \\(\\) at \[^\r\n\]+" ] \
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"backtrace"
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