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7b6bb8da | 1 | # Copyright 2004, 2007, 2008, 2009, 2010, 2011 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 | ||
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22 | |
23 | # Test handling of nullified instructions for the pa target. | |
24 | ||
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25 | switch -glob -- [istarget] { |
26 | "hppa-*-*" { | |
27 | set testfile "pa-nullify" | |
28 | } | |
29 | "hppa64-*-*" { | |
30 | set testfile "pa64-nullify" | |
31 | } | |
32 | "*" { | |
33 | verbose "Skipping hppa nullification tests." | |
34 | return | |
35 | } | |
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36 | } |
37 | ||
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38 | set srcfile ${testfile}.s |
39 | set binfile ${objdir}/${subdir}/${testfile} | |
40 | set gcorefile ${objdir}/${subdir}/${testfile}.gcore | |
41 | ||
42 | if { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable {}] != "" } { | |
43 | unsupported "Testcase compile failed." | |
44 | return -1 | |
45 | } | |
46 | ||
47 | gdb_exit | |
48 | gdb_start | |
49 | gdb_reinitialize_dir $srcdir/$subdir | |
50 | gdb_load ${binfile} | |
51 | ||
52 | # In the first test, we do a "step" on a function whose last instruction | |
53 | # contains a branch-with-nullify. The instruction in the delay slot belongs | |
54 | # to the next function. We verify that when we step off the first function | |
55 | # that we end up back at the caller and not at the second instruction. | |
56 | ||
57 | gdb_breakpoint foo | |
58 | gdb_test "run" "Breakpoint 1, .* in foo.*" "Breakpoint at foo" | |
59 | ||
60 | set test "stepi till main" | |
61 | gdb_test_multiple "stepi" "${test}" { | |
62 | -re ".*in foo.*$gdb_prompt $" { | |
63 | send_gdb "stepi\n" | |
64 | exp_continue -continue_timer | |
65 | } | |
66 | -re ".*in bar.*$gdb_prompt $" { | |
67 | fail $test | |
68 | } | |
69 | -re ".*in main.*$gdb_prompt $" { | |
70 | pass $test | |
71 | } | |
72 | } | |
73 | ||
74 | # In the second test, we verify that we can get a proper backtrace | |
75 | # even when we are in a nullified instruction that belongs to the next function. | |
76 | # We also verify that when stepping over a branch-with-nullify insn that we | |
77 | # stay on the same insn for two steps. | |
78 | ||
79 | proc get_addr_of_sym { sym } { | |
80 | set addr 0 | |
81 | global gdb_prompt | |
82 | global hex | |
83 | ||
84 | set test "get address of $sym" | |
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85 | gdb_test_multiple "print $sym" $test { |
86 | -re ".*($hex) <$sym>.*$gdb_prompt $" { | |
87 | set addr $expect_out(1,string) | |
88 | pass $test | |
89 | } | |
90 | } | |
91 | ||
92 | return $addr | |
93 | } | |
94 | ||
95 | if { ! [ runto_main ] } then { gdb_suppress_tests; } | |
96 | ||
97 | set foo [get_addr_of_sym "foo"] | |
98 | set bar [get_addr_of_sym "bar"] | |
8117349c | 99 | set foo_last "(bar - 4)" |
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100 | |
101 | gdb_breakpoint "*$foo_last" | |
102 | ||
103 | gdb_test "continue" "Breakpoint \[0-9\]*,.* in foo.*" | |
104 | gdb_test "backtrace" "in foo.*in main.*" "Backtrace from last insn in foo" | |
105 | gdb_test "stepi" "in foo.*" "stepi to nullified instruction stays in foo" | |
106 | gdb_test "backtrace" "in foo.*in main.*" "Backtrace from nullified insn" | |
107 | gdb_test "stepi" "in main.*" "stepi to main" | |
108 | ||
109 | # In the third test, we verify that backtraces from nullified instructions | |
110 | # work even in coredumps | |
111 | ||
112 | proc gen_core { test } { | |
113 | global gcorefile | |
114 | global gdb_prompt | |
115 | set gcore_works 0 | |
116 | set escapedfilename [string_to_regexp $gcorefile] | |
117 | ||
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118 | # gcore is not yet implemented for HPUX |
119 | setup_xfail hppa*-*-hpux* | |
120 | ||
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121 | gdb_test_multiple "gcore $gcorefile" "$test: gcore" { |
122 | -re "Saved corefile ${escapedfilename}\[\r\n\]+$gdb_prompt $" { | |
123 | pass "$test: gcore" | |
124 | set gcore_works 1 | |
125 | } | |
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126 | -re "Undefined command.*$gdb_prompt $" { |
127 | fail "$test: gcore (undefined command)" | |
128 | } | |
fe46cd3a | 129 | -re "Can't create a corefile\[\r\n\]+$gdb_prompt $" { |
8117349c | 130 | fail "$test: gcore (can't create corefile)" |
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131 | } |
132 | } | |
133 | ||
134 | return $gcore_works | |
135 | } | |
136 | ||
137 | proc test_core_bt { test } { | |
138 | global gcorefile | |
139 | ||
140 | gdb_test "core $gcorefile" "Core was generated by.*" \ | |
141 | "$test: load core file" "A program is being debugged already.*" "y" | |
142 | ||
143 | gdb_test "backtrace" ".*in foo.*in main.*" "$test: backtrace in gcore" | |
144 | } | |
145 | ||
146 | set test "core at last insn in foo" | |
147 | if { ! [ runto_main ] } then { gdb_suppress_tests; } | |
148 | gdb_breakpoint "*$foo_last" | |
149 | gdb_test "continue" "Breakpoint \[0-9\]*,.* in foo.*" "$test: continue to breakpoint" | |
150 | if [gen_core $test] { | |
151 | test_core_bt $test | |
152 | } | |
153 | ||
154 | set test "core at nullified insn" | |
155 | if { ! [ runto_main ] } then { gdb_suppress_tests; } | |
156 | gdb_breakpoint "*$foo_last" | |
157 | gdb_test "continue" "Breakpoint \[0-9\]*,.* in foo.*" "$test: continue to breakpoint" | |
158 | gdb_test "stepi" ".*in foo.*" "$test: step to nullified instruction" | |
159 | if [gen_core $test] { | |
160 | test_core_bt $test | |
161 | } |