projects / deliverable / binutils-gdb.git / blame
| Commit | Line | Data |
|---|---|---|
| 88b9d363 | 1 | # Copyright (C) 2018-2022 Free Software Foundation, Inc. |
| f2cf6173 EBM |
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 | # This file is part of the gdb testsuite. | |
| 17 | ||
| 18 | # Test access to special purpose register TAR (the Target Address | |
| 19 | # Register). The test inferior writes to this register, we check that | |
| 20 | # GDB reads the same value, then write to the register the address of | |
| 21 | # another label. We then let the inferior continue and execute a | |
| 22 | # branch to TAR and check that we stop at the address that we wrote to | |
| 23 | # register. | |
| 24 | ||
| 25 | if {![istarget "powerpc*-*-linux*"]} then { | |
| 26 | verbose "Skipping PowerPC test for the TAR register." | |
| 27 | return | |
| 28 | } | |
| 29 | ||
| 30 | standard_testfile .c | |
| 31 | ||
| 32 | if {[build_executable "compile" $binfile $srcfile {debug}] == -1} { | |
| 33 | return -1 | |
| 34 | } | |
| 35 | ||
| 36 | proc check_register_access { regname } { | |
| 37 | global gdb_prompt | |
| 38 | ||
| 39 | set test "$regname register access" | |
| 40 | gdb_test_multiple "info reg $regname" "$test" { | |
| 41 | -re "Invalid register.*\r\n$gdb_prompt $" { | |
| 42 | unsupported "$test" | |
| 43 | return 0 | |
| 44 | } | |
| 45 | -re "\r\n$regname.*\r\n$gdb_prompt $" { | |
| 46 | pass "$test" | |
| 47 | return 1 | |
| 48 | } | |
| 49 | } | |
| 50 | return 0 | |
| 51 | } | |
| 52 | ||
| 53 | proc tar_available {} { | |
| 54 | global gdb_prompt | |
| 55 | global inferior_exited_re | |
| 56 | ||
| 57 | set test "TAR available to inferior" | |
| 58 | gdb_test_multiple "continue" "" { | |
| 59 | -re "Illegal instruction.*\r\n$gdb_prompt $" { | |
| 60 | unsupported "$test" | |
| 61 | return 0 | |
| 62 | } | |
| 63 | -re "$inferior_exited_re normally.*$gdb_prompt $" { | |
| 64 | pass "$test" | |
| 65 | return 1 | |
| 66 | } | |
| 67 | } | |
| 68 | return 0 | |
| 69 | } | |
| 70 | ||
| 71 | # Do one pass to check if TAR is usable, system | |
| 72 | # software can prevent it from being used. | |
| 73 | with_test_prefix "check TAR access" { | |
| 74 | clean_restart $binfile | |
| 75 | ||
| 76 | if ![runto_main] { | |
| 77 | return | |
| 78 | } | |
| 79 | ||
| 80 | if {![check_register_access "tar"]} { | |
| 81 | return | |
| 82 | } | |
| 83 | ||
| 84 | if {![tar_available]} { | |
| 85 | return | |
| 86 | } | |
| 87 | } | |
| 88 | ||
| 89 | # Now do the actual test | |
| 90 | clean_restart $binfile | |
| 91 | ||
| 92 | if ![runto_main] { | |
| 93 | return | |
| 94 | } | |
| 95 | ||
| 96 | gdb_breakpoint [gdb_get_line_number "marker"] | |
| 97 | ||
| 98 | gdb_continue_to_breakpoint "continue to marker" | |
| 99 | ||
| 100 | set target1 [get_hexadecimal_valueof "target1" -1] | |
| 101 | set tar [get_hexadecimal_valueof "\$tar" -2] | |
| 102 | ||
| 103 | set test "TAR value from mtspr" | |
| 104 | ||
| 105 | if {${target1} == ${tar}} { | |
| 106 | pass $test | |
| 107 | } else { | |
| 108 | fail $test | |
| 109 | } | |
| 110 | ||
| 111 | set target2 [get_hexadecimal_valueof "target2" -1] | |
| 112 | ||
| 113 | if {$target2 == -1} { | |
| 114 | fail "Could not get value of target2" | |
| 115 | return | |
| 116 | } | |
| 117 | ||
| 118 | gdb_test_no_output "set \$tar = $target2" "set tar" | |
| 119 | ||
| 120 | gdb_breakpoint [gdb_get_line_number "marker 2"] | |
| 121 | ||
| 122 | gdb_continue_to_breakpoint "continue to new target address" ".*marker 2.*" |