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88b9d363 | 1 | # Copyright 2021-2022 Free Software Foundation, Inc. |
e3d528d7 WS |
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 to see if gdb is properly single stepping over the | |
17 | # displaced lnia instruction. This test checks that a series | |
18 | # of lnia instructions are loading ascending values as expected. | |
19 | ||
20 | # lnia is an extended mnemonic for the addpcis instruction, which | |
21 | # stores the $NIA plus an immediate value into a register. | |
22 | # | |
23 | # lnia Rx == addpcis Rx,0 == lnia Rx | |
24 | # subcis Rx,value == addpcis Rx,-value | |
25 | ||
26 | if { ![istarget powerpc*-*] } { | |
27 | verbose "Skipping powerpc lnia test." | |
28 | return | |
29 | } | |
30 | ||
31 | set retval 0 | |
32 | ||
33 | standard_testfile .s | |
34 | ||
35 | if { [prepare_for_testing "failed to prepare" $testfile "$srcfile" \ | |
36 | {debug quiet}] } { | |
37 | return -1 | |
38 | } | |
39 | ||
40 | if ![runto_main] then { | |
41 | return | |
42 | } | |
43 | ||
44 | set before_pc 0 | |
45 | set check_pc [get_hexadecimal_valueof "\$pc" "default0"] | |
46 | ||
47 | # set some breakpoints on the instructions below main(). | |
48 | set bp1 *$check_pc+4 | |
49 | set bp2 *$check_pc+12 | |
50 | set bp3 *$check_pc+16 | |
51 | gdb_breakpoint $bp1 | |
52 | gdb_breakpoint $bp2 | |
53 | gdb_breakpoint $bp3 | |
54 | ||
55 | # single-step through the lnia instructions, and retrieve the | |
56 | # register values as we proceed. | |
57 | gdb_test "stepi" "" "set r3" | |
58 | set check_r3 [get_hexadecimal_valueof "\$r3" "default0"] | |
59 | gdb_test "stepi" "" "set r4" | |
60 | set check_r4 [get_hexadecimal_valueof "\$r4" "default0"] | |
61 | gdb_test "stepi" "" "set r5" | |
62 | set check_r5 [get_hexadecimal_valueof "\$r5" "default0"] | |
63 | gdb_test "stepi" "" "set r6" | |
64 | set check_r6 [get_hexadecimal_valueof "\$r6" "default0"] | |
65 | gdb_test "stepi" "" "set r7" | |
66 | set check_r7 [get_hexadecimal_valueof "\$r7" "default0"] | |
67 | gdb_test "stepi" "" "set r8" | |
68 | set check_r8 [get_hexadecimal_valueof "\$r8" "default0"] | |
69 | gdb_test "stepi" "" "set r9" | |
70 | set check_r9 [get_hexadecimal_valueof "\$r9" "default0"] | |
71 | ||
72 | # Ensure that our register values are as expected. | |
73 | # Specifically that the values loaded by the lnia instruction | |
74 | # reflect the value of the PC as if the instruction was | |
75 | # not displaced. | |
76 | if [expr $check_r3 + 4 != $check_r4] { | |
77 | fail "unexpected value r3+4 != r4 , r3: $check_r3 r4: $check_r4 " | |
78 | } | |
79 | if [expr $check_r4 + 4 != $check_r5] { | |
80 | fail "unexpected value r4+4 != r5 , r4: $check_r4 r5: $check_r5 " | |
81 | } | |
82 | if [expr $check_r5 + 4 != $check_r6] { | |
83 | fail "unexpected value r5+4 != r6 , r5: $check_r5 r6: $check_r6 " | |
84 | } | |
85 | if [expr $check_r6 + 4 != $check_r7] { | |
86 | fail "unexpected value r6+4 != r7 , r6: $check_r6 r7: $check_r7 " | |
87 | } | |
88 | if [expr $check_r7 + 4 != $check_r8] { | |
89 | fail "unexpected value r7+4 != r8 , r7: $check_r7 r8: $check_r8 " | |
90 | } | |
91 | if [expr $check_r8 + 4 != $check_r9] { | |
92 | fail "unexpected value r8+4 != r9 , r8: $check_r8 r9: $check_r9 " | |
93 | } | |
94 | ||
95 | gdb_test "info break" | |
96 | gdb_test "info register r3 r4 r5 r6 r7 r8 r9" | |
97 | gdb_test "disas main" | |
98 | ||
99 | # Let the inferior store all vector registers in a buffer, then dump | |
100 | # the buffer and check it. | |
101 |