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The sources for the test-cases gdb.arch/i386-mpx*.exp contain have_mpx functions that test whether the processor supports mpx instructions. OTOH, the test-cases are compiled using -mmpx -fcheck-pointer-bounds, which instrument all functions with mpx instructions. So, the function that is supposed to test whether mpx instruction are supported contains mpx instructions, which is a bit odd. We could fix this by: - factoring out the have_mpx function into a single source file, and - compiling it without "-mmpx -fcheck-pointer-bounds". But having the mpx support test as part of the test-cases seems like an unnecessary complication that makes the test-cases more difficult to analyze, reason about and modify. So we go one step further and factor out the mpx support test in into a gdb_caching_proc. Tested on x86_64-linux. gdb/testsuite/ChangeLog: 2021-01-12 Tom de Vries <tdevries@suse.de> * gdb.arch/i386-mpx-call.c (have_mpx): Remove. (main): Remove call to have_mpx. * gdb.arch/i386-mpx-call.exp: Use have_mpx. * gdb.arch/i386-mpx-map.c (have_mpx): Remove. (main): Remote call to have_mpx. * gdb.arch/i386-mpx-map.exp: Use have_mpx. * gdb.arch/i386-mpx-sigsegv.c (have_mpx): Remove. (main): Remove call to have_mpx. * gdb.arch/i386-mpx-sigsegv.exp: Use have_mpx. * gdb.arch/i386-mpx-simple_segv.c (have_mpx): Remove. (main): Remove call to have_mpx. * gdb.arch/i386-mpx-simple_segv.exp: Use have_mpx. * gdb.arch/i386-mpx.c (have_mpx): Remove. (main): Remote call to have_mpx. * gdb.arch/i386-mpx.exp: Use have_mpx. * lib/gdb.exp (have_mpx): New proc.
68 lines
2.8 KiB
Plaintext
68 lines
2.8 KiB
Plaintext
# Copyright 2015-2021 Free Software Foundation, Inc.
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#
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# Contributed by Intel Corp. <walfred.tedeschi@intel.com>,
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# <mircea.gherzan@intel.com>
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#
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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 { ![istarget i?86-*-*] && ![istarget x86_64-*-* ] } {
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verbose "Skipping x86 MPX tests."
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return
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}
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standard_testfile
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if { ![supports_mpx_check_pointer_bounds] } {
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return -1
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}
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if { ![have_mpx] } {
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unsupported "processor does not support MPX"
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return -1
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}
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set comp_flags "-mmpx -fcheck-pointer-bounds -I${srcdir}/../nat/"
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if { [prepare_for_testing "failed to prepare" ${testfile} ${srcfile} \
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[list debug nowarnings additional_flags=${comp_flags}]] } {
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return -1
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}
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if ![runto_main] {
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untested "could not run to main"
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return -1
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}
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gdb_breakpoint [ gdb_get_line_number "after-decl" ]
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gdb_breakpoint [ gdb_get_line_number "after-alloc" ]
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gdb_breakpoint [ gdb_get_line_number "after-assign" ]
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gdb_test "show mpx bound 0x0" "Invalid bounds directory entry at $hex." "NULL address of the pointer"
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gdb_continue_to_breakpoint "after-decl" ".*after-decl.*"
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gdb_test "show mpx bound a" "Invalid bounds directory entry at $hex." "pointer instead of pointer address"
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gdb_continue_to_breakpoint "after-alloc" ".*after-alloc.*"
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gdb_test "show mpx bound a" "\\\{lbound = $hex, ubound = $hex\\\}: pointer value = $hex, size = \[8, 4\], metadata = 0x0+" "pointer after allocation"
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gdb_continue_to_breakpoint "after-assign" ".*after-assign.*"
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gdb_test "show mpx bound x" "\\\{lbound = $hex, ubound = $hex\\\}: pointer value = $hex, size = \[8, 4\], metadata = 0x0+" "pointer after assignment"
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gdb_test "set mpx bound 0x0, 0x1, 0x2" "Invalid bounds directory entry at $hex." "set mpx bound: NULL address of the pointer"
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gdb_test_no_output "set mpx bound x, 0xcafebabe, 0xdeadbeef" "set mpx bound: set bounds for a valid pointer address"
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gdb_test "show mpx bound x" "\\\{lbound = .*cafebabe, ubound = .*deadbeef\\\}: pointer value = $hex, size = $decimal, metadata = 0x0+" "set mpx bound: bounds map entry after set mpx bound"
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gdb_test "set mpx bound 0x0, 0x1 0x2" "A syntax error in expression.*" "set mpx bound: Controlling syntax error, missing comma "
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gdb_test "set mpx bound 0x0, 0x1" "Wrong number of arguments.*" "set mpx bound: Controlling syntax error, missing argument "
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