Home | History | Annotate | Line # | Download | only in gdb.arch 
      1 # Copyright 2021-2024 Free Software Foundation, Inc.
      2 
      3 # This program is free software; you can redistribute it and/or modify
      4 # it under the terms of the GNU General Public License as published by
      5 # the Free Software Foundation; either version 3 of the License, or
      6 # (at your option) any later version.
      7 #
      8 # This program is distributed in the hope that it will be useful,
      9 # but WITHOUT ANY WARRANTY; without even the implied warranty of
     10 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
     11 # GNU General Public License for more details.
     12 #
     13 # You should have received a copy of the GNU General Public License
     14 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
     15 
     16 
     17 # Test to confirm that gdb is properly single stepping over the
     18 # displaced addpcis instruction.
     19 # The addpcis instruction and its extended mnemonics lnia and subpcis
     20 # apply an immediate shifted value (X || 0x0000) to the current PC/NIA
     21 # value, and store that value into the instructions target register.
     22 # When the instruction is displaced, it needs special handling.
     23 
     24 # lnia Rx == addpcis Rx,0
     25 # subcis Rx,value == addpcis Rx,-value
     26 
     27 require {istarget powerpc*-*}
     28 
     29 set retval 0
     30 
     31 standard_testfile .s
     32 
     33 if { [prepare_for_testing "failed to prepare" $testfile "$srcfile" \
     34       {debug quiet}] } {
     35     return -1
     36 }
     37 
     38 if {![runto_main]} {
     39       return
     40 }
     41 
     42 set check_pc [get_hexadecimal_valueof "\$pc" "default0"]
     43 set bp1 *$check_pc+4
     44 set bp2 *$check_pc+12
     45 set bp3 *$check_pc+16
     46 gdb_breakpoint $bp1
     47 gdb_breakpoint $bp2
     48 gdb_breakpoint $bp3
     49 
     50 set insn_supported 1
     51 gdb_test_multiple "stepi" "set r3" {
     52     -re "Program received signal SIGILL, Illegal instruction\\..*" {
     53 	set insn_supported 0
     54     }
     55     -re -wrap "" {
     56 	pass $gdb_test_name
     57     }
     58 }
     59 if { ! $insn_supported } {
     60     unsupported "illegal instruction"
     61     return
     62 }
     63 set check_r3 [get_hexadecimal_valueof "\$r3" "default0"]
     64 gdb_test "stepi" "" "set r4"
     65 set check_r4 [get_hexadecimal_valueof "\$r4" "default0"]
     66 gdb_test "stepi" "" "set r5"
     67 set check_r5 [get_hexadecimal_valueof "\$r5" "default0"]
     68 gdb_test "stepi" "" "set r6"
     69 set check_r6 [get_hexadecimal_valueof "\$r6" "default0"]
     70 gdb_test "stepi" "" "set r7"
     71 set check_r7 [get_hexadecimal_valueof "\$r7" "default0"]
     72 gdb_test "stepi" "" "set r8"
     73 set check_r8 [get_hexadecimal_valueof "\$r8" "default0"]
     74 gdb_test "stepi" "" "set r9"
     75 set check_r9 [get_hexadecimal_valueof "\$r9" "default0"]
     76 
     77 # R6 will contain the reference value.  All other
     78 # instructions in this test will be storing values
     79 # relative to what is stored in R6.
     80 
     81 #	subpcis 3,+0x100 	# /* set r3 */
     82 #	subpcis 4,+0x10		# /* set r4 */
     83 #	subpcis 5,+0x1		# /* set r5 */
     84 #	lnia    6		# /* set r6 */
     85 #	addpcis 7,+0x1		# /* set r7 */
     86 #	addpcis 8,+0x10		# /* set r8 */
     87 #	addpcis 9,+0x100	# /* set r9 */
     88 
     89 if [expr $check_r3 + 0x1000000   != $check_r6 - 0xc ] {
     90     fail "unexpected value r3 + 0x1,000,000 != r6 + 0xc ; r3: $check_r3  r6: $check_r6 "
     91 }
     92 if [expr $check_r4 + 0x100000  != $check_r6 - 0x8 ] {
     93     fail "unexpected value r4 + 0x100,000 != r6 - 0x8 ; r4: $check_r4  r6: $check_r6 "
     94 }
     95 if [expr $check_r5 + 0x10000  != $check_r6 - 0x4 ] {
     96     fail "unexpected value r5 + 0x10,000 != r6 , r5: $check_r5  r6: $check_r6 "
     97 }
     98 if [expr $check_r6 != $check_r6] {
     99     fail "unexpected value r6 != r6 , r6: $check_r6  r6: $check_r6 "
    100 }
    101 if [expr $check_r7 - 0x10000  != $check_r6 + 0x4] {
    102     fail "unexpected value r7 - 0x10,000 != r6 + 0x4 , r7: $check_r7  r7: $check_r6 "
    103 }
    104 if [expr $check_r8 - 0x100000  != $check_r6 + 0x8 ] {
    105     fail "unexpected value r8 - 0x100,000 != r6 , r8: $check_r8  r8: $check_r6 "
    106 }
    107 if [expr $check_r9 - 0x1000000  != $check_r6 + 0xc ] {
    108     fail "unexpected value r9 - 0x1,000,000 != r6 + 0xc , r9: $check_r9  r6: $check_r6 "
    109 }
    110 
    111 gdb_test "info break"
    112 gdb_test "info register r3 r4 r5 r6 r7 r8 r9"
    113 gdb_test "disas main"
    114 
    115