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9b254dd1 | 1 | # Copyright 2004, 2007, 2008 Free Software Foundation, Inc. |
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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 | |
e22f8b7c | 5 | # the Free Software Foundation; either version 3 of the License, or |
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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 | |
e22f8b7c | 14 | # along with this program. If not, see <http://www.gnu.org/licenses/>. |
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15 | # |
16 | # This file is part of the gdb testsuite. | |
17 | ||
18 | if $tracelevel { | |
19 | strace $tracelevel | |
20 | } | |
21 | ||
22 | set prms_id 0 | |
23 | set bug_id 0 | |
24 | ||
25 | # Test handling of nullified instructions for the pa target. | |
26 | ||
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27 | switch -glob -- [istarget] { |
28 | "hppa-*-*" { | |
29 | set testfile "pa-nullify" | |
30 | } | |
31 | "hppa64-*-*" { | |
32 | set testfile "pa64-nullify" | |
33 | } | |
34 | "*" { | |
35 | verbose "Skipping hppa nullification tests." | |
36 | return | |
37 | } | |
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38 | } |
39 | ||
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40 | set srcfile ${testfile}.s |
41 | set binfile ${objdir}/${subdir}/${testfile} | |
42 | set gcorefile ${objdir}/${subdir}/${testfile}.gcore | |
43 | ||
44 | if { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable {}] != "" } { | |
45 | unsupported "Testcase compile failed." | |
46 | return -1 | |
47 | } | |
48 | ||
49 | gdb_exit | |
50 | gdb_start | |
51 | gdb_reinitialize_dir $srcdir/$subdir | |
52 | gdb_load ${binfile} | |
53 | ||
54 | # In the first test, we do a "step" on a function whose last instruction | |
55 | # contains a branch-with-nullify. The instruction in the delay slot belongs | |
56 | # to the next function. We verify that when we step off the first function | |
57 | # that we end up back at the caller and not at the second instruction. | |
58 | ||
59 | gdb_breakpoint foo | |
60 | gdb_test "run" "Breakpoint 1, .* in foo.*" "Breakpoint at foo" | |
61 | ||
62 | set test "stepi till main" | |
63 | gdb_test_multiple "stepi" "${test}" { | |
64 | -re ".*in foo.*$gdb_prompt $" { | |
65 | send_gdb "stepi\n" | |
66 | exp_continue -continue_timer | |
67 | } | |
68 | -re ".*in bar.*$gdb_prompt $" { | |
69 | fail $test | |
70 | } | |
71 | -re ".*in main.*$gdb_prompt $" { | |
72 | pass $test | |
73 | } | |
74 | } | |
75 | ||
76 | # In the second test, we verify that we can get a proper backtrace | |
77 | # even when we are in a nullified instruction that belongs to the next function. | |
78 | # We also verify that when stepping over a branch-with-nullify insn that we | |
79 | # stay on the same insn for two steps. | |
80 | ||
81 | proc get_addr_of_sym { sym } { | |
82 | set addr 0 | |
83 | global gdb_prompt | |
84 | global hex | |
85 | ||
86 | set test "get address of $sym" | |
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87 | gdb_test_multiple "print $sym" $test { |
88 | -re ".*($hex) <$sym>.*$gdb_prompt $" { | |
89 | set addr $expect_out(1,string) | |
90 | pass $test | |
91 | } | |
92 | } | |
93 | ||
94 | return $addr | |
95 | } | |
96 | ||
97 | if { ! [ runto_main ] } then { gdb_suppress_tests; } | |
98 | ||
99 | set foo [get_addr_of_sym "foo"] | |
100 | set bar [get_addr_of_sym "bar"] | |
8117349c | 101 | set foo_last "(bar - 4)" |
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102 | |
103 | gdb_breakpoint "*$foo_last" | |
104 | ||
105 | gdb_test "continue" "Breakpoint \[0-9\]*,.* in foo.*" | |
106 | gdb_test "backtrace" "in foo.*in main.*" "Backtrace from last insn in foo" | |
107 | gdb_test "stepi" "in foo.*" "stepi to nullified instruction stays in foo" | |
108 | gdb_test "backtrace" "in foo.*in main.*" "Backtrace from nullified insn" | |
109 | gdb_test "stepi" "in main.*" "stepi to main" | |
110 | ||
111 | # In the third test, we verify that backtraces from nullified instructions | |
112 | # work even in coredumps | |
113 | ||
114 | proc gen_core { test } { | |
115 | global gcorefile | |
116 | global gdb_prompt | |
117 | set gcore_works 0 | |
118 | set escapedfilename [string_to_regexp $gcorefile] | |
119 | ||
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120 | # gcore is not yet implemented for HPUX |
121 | setup_xfail hppa*-*-hpux* | |
122 | ||
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123 | gdb_test_multiple "gcore $gcorefile" "$test: gcore" { |
124 | -re "Saved corefile ${escapedfilename}\[\r\n\]+$gdb_prompt $" { | |
125 | pass "$test: gcore" | |
126 | set gcore_works 1 | |
127 | } | |
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128 | -re "Undefined command.*$gdb_prompt $" { |
129 | fail "$test: gcore (undefined command)" | |
130 | } | |
fe46cd3a | 131 | -re "Can't create a corefile\[\r\n\]+$gdb_prompt $" { |
8117349c | 132 | fail "$test: gcore (can't create corefile)" |
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133 | } |
134 | } | |
135 | ||
136 | return $gcore_works | |
137 | } | |
138 | ||
139 | proc test_core_bt { test } { | |
140 | global gcorefile | |
141 | ||
142 | gdb_test "core $gcorefile" "Core was generated by.*" \ | |
143 | "$test: load core file" "A program is being debugged already.*" "y" | |
144 | ||
145 | gdb_test "backtrace" ".*in foo.*in main.*" "$test: backtrace in gcore" | |
146 | } | |
147 | ||
148 | set test "core at last insn in foo" | |
149 | if { ! [ runto_main ] } then { gdb_suppress_tests; } | |
150 | gdb_breakpoint "*$foo_last" | |
151 | gdb_test "continue" "Breakpoint \[0-9\]*,.* in foo.*" "$test: continue to breakpoint" | |
152 | if [gen_core $test] { | |
153 | test_core_bt $test | |
154 | } | |
155 | ||
156 | set test "core at nullified insn" | |
157 | if { ! [ runto_main ] } then { gdb_suppress_tests; } | |
158 | gdb_breakpoint "*$foo_last" | |
159 | gdb_test "continue" "Breakpoint \[0-9\]*,.* in foo.*" "$test: continue to breakpoint" | |
160 | gdb_test "stepi" ".*in foo.*" "$test: step to nullified instruction" | |
161 | if [gen_core $test] { | |
162 | test_core_bt $test | |
163 | } |