f9d67f435f
arm_pc_is_thumb. (arm_pc_is_thumb): Use arm_find_mapping_symbol. (extend_buffer_earlier): New function. (MAX_IT_BLOCK_PREFIX, IT_SCAN_THRESHOLD): New constants. (arm_adjust_breakpoint_address): New function. (arm_gdbarch_init): Register arm_adjust_breakpoint_address. testsuite/ * gdb.arch/thumb2-it.S (it_breakpoints): New function. * gdb.arch/thumb2-it.exp (test_it_break): New function. (Top level): Call it.
157 lines
3.9 KiB
Text
157 lines
3.9 KiB
Text
# Copyright 2010 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 single stepping over Thumb-2 IT blocks.
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if {![istarget arm*-*eabi*]} then {
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verbose "Skipping Thumb-2 tests."
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return
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}
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set testfile "thumb2-it"
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set srcfile ${testfile}.S
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set binfile ${objdir}/${subdir}/${testfile}
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if { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable debug] != "" } {
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untested thumb2-it.exp
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return -1
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}
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gdb_exit
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gdb_start
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gdb_reinitialize_dir $srcdir/$subdir
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gdb_load ${binfile}
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if ![runto_main] then {
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untested thumb2-it.exp
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return -1
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}
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# Make sure that the compiler options allow Thumb-2.
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gdb_test_multiple "list" "list main" {
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-re ".*@ No Thumb-2.*$gdb_prompt $" {
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pass "list main"
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untested thumb2-it.exp
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return -1
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}
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-re ".*@ Thumb-2 OK.*$gdb_prompt $" {
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pass "list main"
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}
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}
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proc test_it_block { func } {
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global gdb_prompt
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global software_step
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if { ! [gdb_breakpoint "*${func}"] } {
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unresolved "$func, IT block tests"
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return
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}
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gdb_test "call ${func}()" "Breakpoint.*@ Setup.*" "$func, call"
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set expected 0
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set reached 0
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set steps 0
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set ok 1
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while { $ok } {
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set ok 0
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set msg "$func, stepi $steps"
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gdb_test_multiple "stepi" "$msg" {
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-re ".*@ Setup.*$gdb_prompt $" {
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pass "$msg"
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set ok 1
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}
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-re ".*@ IT instruction, Expected == (\[0-9\]*)\r\n$gdb_prompt $" {
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set expected $expect_out(1,string)
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pass "$msg"
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set ok 1
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}
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-re ".*@ Reached.*$gdb_prompt $" {
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incr reached
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pass "$msg"
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set ok 1
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if { [regexp {@ Reached, Set ([^\r\n]*)\r\n} $expect_out(0,string) dummy change] } {
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gdb_test "set $change" "" "$func, set $change"
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}
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}
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-re ".*@ Not reached.*$gdb_prompt $" {
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# An instruction in an IT block whose predicate is false when
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# we reach it. If using software single step, we should not
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# stop here.
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if { $software_step } {
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fail "$msg"
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} else {
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pass "$msg"
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set ok 1
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}
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}
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-re ".*@ Never reached.*$gdb_prompt $" {
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# An instruction that should be branched over.
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fail "$msg"
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}
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-re ".*@ Done.*$gdb_prompt $" {
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pass "$msg"
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if { $reached == $expected } {
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pass "$func, correct instructions reached"
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} else {
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fail "$func, correct instructions reached"
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}
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if { [regexp {@ Done, Check ([^\r\n]*)\r\n} $expect_out(0,string) dummy check] } {
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gdb_test "print $check" ".* = 1" "$func, $check"
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}
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}
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}
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if { ! $ok } {
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break
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}
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incr steps
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continue
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}
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gdb_test "continue" "" "$func, continue"
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return
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}
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proc test_it_break { ndx } {
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set line [gdb_get_line_number "@ Break ${ndx}"]
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if { ! [gdb_breakpoint "${line}"] } {
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unresolved "continue to breakpoint: test ${ndx}"
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return
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}
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gdb_continue_to_breakpoint "test ${ndx}" ".*@ Location ${ndx}.*"
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}
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# If we are using software single-stepping in GDB, then GDB will not
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# stop at conditional instructions with a false predicate during stepi.
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# If we are using a simulator or debug interface with hardware single
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# step, then GDB will stop at such instructions.
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if { [istarget arm*-linux*] } {
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set software_step 1
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} else {
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set software_step 0
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}
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for { set i 1 } { $i <= 8 } { incr i } {
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test_it_block it_${i}
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}
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gdb_breakpoint "*it_breakpoints"
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gdb_test "call it_breakpoints()" "Breakpoint.*"
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for { set i 1 } { $i <= 7 } { incr i } {
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test_it_break ${i}
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}
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