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32d0add0 | 1 | # Copyright 2014-2015 Free Software Foundation, Inc. |
0256a6ac PA |
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 | # Test that dcache behaves correctly when reading a cache line fails. | |
17 | ||
18 | standard_testfile | |
19 | ||
20 | if { [prepare_for_testing "failed to prepare" ${testfile}] } { | |
21 | return -1 | |
22 | } | |
23 | ||
24 | if ![runto breakpt] { | |
25 | return -1 | |
26 | } | |
27 | ||
28 | # Issue the "delete mem" command. This makes GDB ignore the | |
29 | # target-provided list, if any. | |
30 | ||
31 | proc delete_mem {} { | |
32 | global gdb_prompt | |
33 | ||
34 | set test "delete mem" | |
35 | gdb_test_multiple $test $test { | |
36 | -re "Delete all memory regions.*y or n.*$" { | |
37 | send_gdb "y\n" | |
38 | exp_continue | |
39 | } | |
40 | -re "$gdb_prompt $" { | |
41 | pass $test | |
42 | } | |
43 | } | |
44 | } | |
45 | ||
46 | # Make the dcache line size bigger than the pagesize. | |
47 | set pagesize [get_integer_valueof "pg_size" -1] | |
48 | set linesize [expr $pagesize * 2] | |
49 | ||
50 | gdb_test_no_output "set dcache line-size $linesize" \ | |
51 | "set dcache line size to twice the pagesize" | |
52 | ||
53 | gdb_test "info dcache" \ | |
54 | "Dcache 4096 lines of $linesize bytes each.\r\nNo data cache available." | |
55 | ||
56 | # Make sure dcache doesn't automatically skip unmapped regions. | |
57 | delete_mem | |
58 | ||
59 | gdb_test "info mem" \ | |
60 | "Using user-defined memory regions.\r\nThere are no memory regions defined\." | |
61 | ||
62 | # Given the line size is bigger than the page size, we have | |
63 | # alternating mapped and unmapped pages, these make dcache fail to | |
64 | # fill in the cache line. GDB used to have a bug where that failure | |
65 | # would end up as user-visible error. The range being disassembled is | |
66 | # wholly available, so GDB should succeed. | |
67 | gdb_test "disassemble first_mapped_page, +10" "End of assembler dump\." | |
68 | gdb_test "disassemble last_mapped_page, +10" "End of assembler dump\." |