mirror of
https://sourceware.org/git/binutils-gdb.git
synced 2024-12-21 04:42:53 +08:00
3f94e58859
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.
410 lines
9.4 KiB
Plaintext
410 lines
9.4 KiB
Plaintext
# Copyright (C) 2017-2021 Free Software Foundation, Inc.
|
|
#
|
|
# This program is free software; you can redistribute it and/or modify
|
|
# it under the terms of the GNU General Public License as published by
|
|
# the Free Software Foundation; either version 3 of the License, or
|
|
# (at your option) any later version.
|
|
#
|
|
# This program is distributed in the hope that it will be useful,
|
|
# but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
# GNU General Public License for more details.
|
|
#
|
|
# You should have received a copy of the GNU General Public License
|
|
# along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
|
|
|
|
if { ![istarget i?86-*-*] && ![istarget x86_64-*-* ] } {
|
|
untested "skipping x86 MPX tests."
|
|
return
|
|
}
|
|
|
|
standard_testfile
|
|
|
|
if { ![supports_mpx_check_pointer_bounds] } {
|
|
return -1
|
|
}
|
|
|
|
if { ![have_mpx] } {
|
|
unsupported "processor does not support MPX"
|
|
return -1
|
|
}
|
|
|
|
set comp_flags "-mmpx -fcheck-pointer-bounds -I${srcdir}/../nat"
|
|
|
|
if {[prepare_for_testing "failed to prepare" ${testfile} ${srcfile} \
|
|
[list debug additional_flags=${comp_flags}]] } {
|
|
return -1
|
|
}
|
|
|
|
if ![runto_main] {
|
|
untested "could not run to main"
|
|
return -1
|
|
}
|
|
|
|
set bounds_table 0
|
|
gdb_test_multiple "disassemble upper" "" {
|
|
-re -wrap "bndldx.*" {
|
|
set bounds_table 1
|
|
}
|
|
-re -wrap "" {
|
|
}
|
|
}
|
|
|
|
# Convenience for returning from an inferior call that causes a BND violation.
|
|
#
|
|
gdb_test_no_output "set confirm off"
|
|
|
|
# Convenience variable.
|
|
#
|
|
set bound_reg " = \\\{lbound = $hex, ubound = $hex\\\}.*"
|
|
set int_braw_reg " = \\\{lbound = 0x0, ubound_raw = 0x0\\\}.*"
|
|
set bndcfg_reg " = \\\{raw = $hex, config = \\\{base = $hex, reserved = $hex,\
|
|
preserved = $hex, enabled = $hex\\\}\\\}"
|
|
set bndstatus_reg " = \\\{raw = $hex, status = \\\{bde = $hex,\
|
|
error = $hex\\\}\\\}"
|
|
set u_fault [multi_line "Program received signal SIGSEGV, Segmentation fault" \
|
|
"Upper bound violation while accessing address $hex" \
|
|
"Bounds: \\\[lower = $hex, upper = $hex\\\]"]
|
|
|
|
|
|
# Simplify the tests below.
|
|
#
|
|
proc sanity_check_bndregs {arglist} {
|
|
|
|
global int_braw_reg
|
|
|
|
foreach a $arglist {
|
|
gdb_test "p /x $a" "$int_braw_reg"\
|
|
"$a"
|
|
}
|
|
}
|
|
|
|
# Set bnd register to have no access to memory.
|
|
#
|
|
proc remove_memory_access {reg} {
|
|
global hex
|
|
|
|
sanity_check_bndregs {"\$bnd0raw" "\$bnd1raw" "\$bnd2raw" "\$bnd3raw"}
|
|
|
|
gdb_test "p /x $reg.lbound = $reg.ubound" "= $hex"\
|
|
"$reg lower bound set"
|
|
gdb_test "p /x $reg.ubound = 0" " = 0x0"\
|
|
"$reg upper bound set"
|
|
}
|
|
|
|
|
|
# Prepare convenience variables for bndconfig and status
|
|
# for posterior comparison.
|
|
#
|
|
proc prepare_bndcfg_bndstatus {} {
|
|
|
|
global bndcfg_reg
|
|
global bndstatus_reg
|
|
|
|
gdb_test "p /x \$temp_bndcfgu = \$bndcfgu" "$bndcfg_reg"\
|
|
"bndcfgu should not change"
|
|
|
|
gdb_test "p /x \$temp_bndstatus = \$bndstatus" "$bndstatus_reg"\
|
|
"bndstatus should not change"
|
|
}
|
|
|
|
# Compare values set for convenience variables and actual values of bndconfig
|
|
# and bndstatus registers.
|
|
#
|
|
proc compare_bndstatus_with_convenience {} {
|
|
|
|
gdb_test "p \$temp_bndcfgu == \$bndcfgu" "= 1"\
|
|
"bndcfgu compare before and after"
|
|
gdb_test "p \$temp_bndstatus == \$bndstatus" "= 1"\
|
|
"bndstatus compare before and after"
|
|
}
|
|
|
|
# Perform an inferior call defined in func.
|
|
#
|
|
proc perform_a_call {func} {
|
|
|
|
global inf_call_stopped
|
|
global gdb_prompt
|
|
|
|
gdb_test "p /x $func" [multi_line "The program being debugged\
|
|
stopped while in a function called from GDB." \
|
|
"Evaluation of the expression containing the\
|
|
function.*" \
|
|
] "inferior call stopped"
|
|
}
|
|
|
|
# Perform an inferior call defined in func.
|
|
#
|
|
proc check_bound_violation {parm parm_type is_positive} {
|
|
|
|
global u_fault bounds_table
|
|
|
|
set have_bnd_violation 0
|
|
gdb_test_multiple "continue" "continue to a bnd violation" {
|
|
-re -wrap "Continuing\." {
|
|
if { $bounds_table } {
|
|
pass $gdb_test_name
|
|
} else {
|
|
fail $gdb_test_name
|
|
}
|
|
}
|
|
-re -wrap "$u_fault.*" {
|
|
pass $gdb_test_name
|
|
set have_bnd_violation 1
|
|
}
|
|
}
|
|
if { ! $have_bnd_violation } {
|
|
return
|
|
}
|
|
|
|
set message "access only one position"
|
|
if {$is_positive == 1} {
|
|
gdb_test "p (((void *)\$_siginfo._sifields._sigfault.si_addr\
|
|
- (void*)$parm))/sizeof($parm_type) == 1"\
|
|
" = 1" $message
|
|
} else {
|
|
gdb_test "p ((void*)$parm\
|
|
- (void *)\$_siginfo._sifields._sigfault.si_addr)\
|
|
/sizeof($parm_type) == 1"\
|
|
" = 1" $message
|
|
}
|
|
gdb_test "return" "\\\#.*main.*i386-mpx-call\\\.c:.*" "return from the fault"
|
|
}
|
|
|
|
|
|
# Start testing!
|
|
#
|
|
|
|
# Set up for stopping in the middle of main for calling a function in the
|
|
# inferior.
|
|
#
|
|
set break "bkpt 1."
|
|
gdb_breakpoint [gdb_get_line_number "${break}"]
|
|
gdb_continue_to_breakpoint "${break}" ".*${break}.*"
|
|
|
|
|
|
# Consistency:
|
|
# default run execution of call should succeed without violations.
|
|
#
|
|
with_test_prefix "default_run" {
|
|
|
|
gdb_test "p \$keep_bnd0_value=\$bnd0" $bound_reg\
|
|
"store bnd0 register in a convenience variable"
|
|
|
|
gdb_test "p /x upper (a, b, c, d, 0)" " = $hex"\
|
|
"default inferior call"
|
|
|
|
gdb_test "p ((\$bnd0.lbound==\$keep_bnd0_value.lbound) &&\
|
|
(\$bnd0.ubound==\$keep_bnd0_value.ubound))" "= 1" \
|
|
"bnd register value after and before call"
|
|
}
|
|
|
|
# Consistency: Examine bnd registers values before and after the call.
|
|
#
|
|
#
|
|
with_test_prefix "verify_default_values" {
|
|
|
|
prepare_bndcfg_bndstatus
|
|
|
|
gdb_breakpoint "*upper"
|
|
perform_a_call "upper (a, b, c, d, 1)"
|
|
|
|
sanity_check_bndregs {"\$bnd0raw" "\$bnd1raw" "\$bnd2raw" "\$bnd3raw"}
|
|
|
|
compare_bndstatus_with_convenience
|
|
|
|
gdb_test_multiple "continue" "inferior call test" {
|
|
-re ".*Continuing.\r\n$gdb_prompt " {
|
|
pass "inferior call performed"
|
|
}
|
|
}
|
|
}
|
|
|
|
# Examine: Cause an upper bound violation changing BND0.
|
|
#
|
|
#
|
|
with_test_prefix "upper_bnd0" {
|
|
|
|
prepare_bndcfg_bndstatus
|
|
|
|
gdb_breakpoint "*upper"
|
|
perform_a_call "upper (a, b, c, d, 1)"
|
|
|
|
remove_memory_access "\$bnd0"
|
|
|
|
compare_bndstatus_with_convenience
|
|
|
|
check_bound_violation "a" "int" 1
|
|
}
|
|
|
|
# Examine: Cause an upper bound violation changing BND1.
|
|
#
|
|
#
|
|
with_test_prefix "upper_bnd1" {
|
|
|
|
prepare_bndcfg_bndstatus
|
|
|
|
gdb_breakpoint "*upper"
|
|
perform_a_call "upper (a, b, c, d, 1)"
|
|
|
|
remove_memory_access "\$bnd1"
|
|
|
|
compare_bndstatus_with_convenience
|
|
|
|
check_bound_violation "b" "int" 1
|
|
}
|
|
|
|
# Examine: Cause an upper bound violation changing BND2.
|
|
#
|
|
#
|
|
with_test_prefix "upper_bnd2" {
|
|
|
|
prepare_bndcfg_bndstatus
|
|
|
|
gdb_breakpoint "*upper"
|
|
perform_a_call "upper (a, b, c, d, 1)"
|
|
|
|
remove_memory_access "\$bnd2"
|
|
|
|
compare_bndstatus_with_convenience
|
|
|
|
check_bound_violation "c" "int" 1
|
|
}
|
|
|
|
# Examine: Cause an upper bound violation changing BND3.
|
|
#
|
|
#
|
|
with_test_prefix "upper_bnd3" {
|
|
prepare_bndcfg_bndstatus
|
|
|
|
gdb_breakpoint "*upper"
|
|
perform_a_call "upper (a, b, c, d, 1)"
|
|
|
|
remove_memory_access "\$bnd3"
|
|
|
|
compare_bndstatus_with_convenience
|
|
|
|
check_bound_violation "d" "int" 1
|
|
}
|
|
|
|
# Examine: Cause a lower bound violation changing BND0.
|
|
#
|
|
#
|
|
with_test_prefix "lower_bnd0" {
|
|
|
|
prepare_bndcfg_bndstatus
|
|
|
|
gdb_breakpoint "*lower"
|
|
perform_a_call "lower (a, b, c, d, 1)"
|
|
|
|
remove_memory_access "\$bnd0"
|
|
|
|
compare_bndstatus_with_convenience
|
|
|
|
check_bound_violation "a" "int" 0
|
|
}
|
|
|
|
# Examine: Cause a lower bound violation changing BND1.
|
|
#
|
|
#
|
|
with_test_prefix "lower_bnd1" {
|
|
|
|
prepare_bndcfg_bndstatus
|
|
|
|
gdb_breakpoint "*lower"
|
|
perform_a_call "lower (a, b, c, d, 1)"
|
|
|
|
remove_memory_access "\$bnd1"
|
|
|
|
compare_bndstatus_with_convenience
|
|
|
|
check_bound_violation "b" "int" 0
|
|
}
|
|
|
|
# Examine: Cause a lower bound violation changing BND2.
|
|
#
|
|
#
|
|
with_test_prefix "lower_bnd2" {
|
|
|
|
prepare_bndcfg_bndstatus
|
|
|
|
gdb_breakpoint "*lower"
|
|
perform_a_call "lower (a, b, c, d, 1)"
|
|
|
|
remove_memory_access "\$bnd2"
|
|
|
|
compare_bndstatus_with_convenience
|
|
|
|
check_bound_violation "c" "int" 0
|
|
}
|
|
|
|
# Examine: Cause a lower bound violation changing BND3.
|
|
#
|
|
#
|
|
with_test_prefix "lower_bnd3" {
|
|
|
|
prepare_bndcfg_bndstatus
|
|
|
|
gdb_breakpoint "*lower"
|
|
perform_a_call "lower (a, b, c, d, 1)"
|
|
|
|
remove_memory_access "\$bnd3"
|
|
|
|
compare_bndstatus_with_convenience
|
|
|
|
check_bound_violation "d" "int" 0
|
|
}
|
|
|
|
# Examine: String causing a upper bound violation changing BND0.
|
|
#
|
|
#
|
|
with_test_prefix "chars_up" {
|
|
|
|
prepare_bndcfg_bndstatus
|
|
|
|
gdb_breakpoint "*char_upper"
|
|
perform_a_call "char_upper (hello, 1)"
|
|
|
|
remove_memory_access "\$bnd0"
|
|
|
|
compare_bndstatus_with_convenience
|
|
|
|
check_bound_violation "str" "char" 1
|
|
}
|
|
|
|
|
|
# Examine: String causing an lower bound violation changing BND0.
|
|
#
|
|
#
|
|
with_test_prefix "chars_low" {
|
|
|
|
prepare_bndcfg_bndstatus
|
|
|
|
gdb_breakpoint "*char_lower"
|
|
perform_a_call "char_lower (hello, 1)"
|
|
|
|
remove_memory_access "\$bnd0"
|
|
|
|
compare_bndstatus_with_convenience
|
|
|
|
check_bound_violation "str" "char" 0
|
|
}
|
|
|
|
# Examine: String causing an lower bound violation changing BND0.
|
|
#
|
|
#
|
|
with_test_prefix "chars_low_adhoc_parm" {
|
|
|
|
prepare_bndcfg_bndstatus
|
|
|
|
gdb_breakpoint "*char_lower"
|
|
perform_a_call "char_lower (\"tryme\", 1)"
|
|
|
|
remove_memory_access "\$bnd0"
|
|
|
|
compare_bndstatus_with_convenience
|
|
|
|
check_bound_violation "str" "char" 0
|
|
}
|