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# Copyright 2010 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/>.
# This file is part of the gdb testsuite.
# Test arm displaced stepping.
if $tracelevel {
strace $tracelevel
}
if {![istarget "arm*-*-*"]} then {
verbose "Skipping arm displaced stepping tests."
return
}
set testfile "arm-disp-step"
set srcfile ${testfile}.S
set binfile ${objdir}/${subdir}/${testfile}
set additional_flags "-Wa,-g"
if { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable [list debug $additional_flags]] != "" } {
untested arm-disp-step.exp
return -1
}
#########################################
# Test ldm/stm related to PC.
proc test_ldm_stm_pc {} {
global srcfile
# Try to set breakpoint on test_ldm_stm_pc. If symbol 'test_ldm_stm_pc'
# can't be resolved, test case is compiled in Thumb mode, skip it.
gdb_test_multiple "break *test_ldm_stm_pc" "break test_ldm_stm_pc" {
-re "Breakpoint.*at.* file .*$srcfile, line.*" {
pass "break test_ldm_stm_pc"
}
-re "Function \"test_ldm_stm_pc\" not defined\..*Make breakpoint pending on future shared library load.*y or .n.. $" {
gdb_test "n" "" "Test case is compiled in Thumb mode"
return
}
}
gdb_test "break *test_ldm_pc" \
"Breakpoint.*at.* file .*$srcfile, line.*" \
"break test_ldm_pc"
gdb_test "break *test_ldm_stm_pc_ret" \
"Breakpoint.*at.* file .*$srcfile, line.*" \
"break test_ldm_stm_pc_ret"
gdb_continue_to_breakpoint "continue to test_ldm_stm_pc" \
".*stmdb.*sp\!\,.*\{lr\, pc\}.*"
gdb_continue_to_breakpoint "continue to test_ldm_pc" \
".*ldmia.*sp\!\,.*\{pc\}.*"
gdb_continue_to_breakpoint "continue to test_ldm_stm_pc_ret" \
".*bx lr.*"
}
##########################################
# Test call/ret.
proc test_call_ret {} {
global srcfile
gdb_test "break *test_call_end" \
"Breakpoint.*at.* file .*$srcfile, line.*" \
"break test_call_end"
gdb_test "break *test_ret" \
"Breakpoint.*at.* file .*$srcfile, line.*" \
"break test_ret"
gdb_test "break *test_ret_end" \
"Breakpoint.*at.* file .*$srcfile, line.*" \
"break test_ret_end"
gdb_continue_to_breakpoint "continue to test_call_end" \
".*@ Location test_call_end.*"
gdb_continue_to_breakpoint "continue to test_ret" \
".*bx lr.*"
gdb_continue_to_breakpoint "continue to test_ret_end" \
".*@ Location test_ret_end.*"
}
#########################################
# Test branch
proc test_branch {} {
global srcfile
gdb_test "break *test_branch" \
"Breakpoint.*at.* file .*$srcfile, line.*" \
"break test_branch"
gdb_test "break *L_branch" \
"Breakpoint.*at.* file .*$srcfile, line.*" \
"break Lbranch"
gdb_continue_to_breakpoint "continue to test_branch" \
".*b.*L_branch.*"
gdb_continue_to_breakpoint "continue to Lbranch" \
".*bx lr.*"
}
#########################################
# Test ldr from pc
proc test_ldr_from_pc {} {
global srcfile
gdb_test "break *test_ldr_pc" \
"Breakpoint.*at.* file .*$srcfile, line.*" \
"break test_ldr_pc"
gdb_test "break test_ldr_pc_ret" \
"Breakpoint.*at.* file .*$srcfile, line.*" \
"break test_ldr_pc_ret"
gdb_continue_to_breakpoint "continue to test_ldr_pc" \
".*ldr.*r1\,.*\[pc, #0\].*"
gdb_continue_to_breakpoint "continue to Lbranch" \
".*bx lr.*"
}
# Get things started.
clean_restart ${testfile}
# Turn displaced stepping off before runto main. When displaced stepping
# is on, and we type 'run', GDB will first try to single step on _dl_debug_state,
# which is in library might be compiled in Thumb.
gdb_test_no_output "set displaced-stepping off"
if ![runto_main] then {
fail "Can't run to main"
return 0
}
gdb_test_no_output "set displaced-stepping on"
gdb_test "show displaced-stepping" ".* displaced stepping .* is on.*"
gdb_test "break *test_call" \
"Breakpoint.*at.* file .*$srcfile, line.*" \
"break test_call"
gdb_test_multiple "continue" "continue to test_call" {
-re ".*bl test_call_subr.*" {
pass "continue to test_call"
}
-re "Displaced stepping is only supported in" {
kfail "gdb/NNNN" $testfile
return
}
}
test_call_ret
test_branch
test_ldr_from_pc
test_ldm_stm_pc
##########################################
# Done, run program to exit.
gdb_continue_to_end "arm-disp-step"
|
