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c906108c SS |
1 | # Copyright (C) 1998 Free Software Foundation, Inc. |
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 2 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, write to the Free Software | |
15 | # Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. | |
16 | ||
17 | # Please email any bugs, comments, and/or additions to this file to: | |
18 | # bug-gdb@prep.ai.mit.edu | |
19 | ||
20 | # Test GDB's ability to restore saved registers from stack frames | |
21 | # when using the `return' command. | |
22 | # | |
23 | # This file was written by Jim Blandy <jimb@cygnus.com>, with | |
24 | # fragments borrowed from return.exp. | |
25 | ||
26 | if $tracelevel then { | |
27 | strace $tracelevel | |
28 | } | |
29 | ||
30 | set prms_id 0 | |
31 | set bug_id 0 | |
32 | ||
33 | set testfile "restore" | |
34 | set srcfile ${testfile}.c | |
35 | set binfile ${objdir}/${subdir}/${testfile} | |
36 | if { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable {debug}] != "" } { | |
37 | gdb_suppress_entire_file "Testcase compile failed, so all tests in this file will automatically fail." | |
38 | } | |
39 | ||
40 | proc restore_tests { } { | |
41 | global gdb_prompt | |
42 | ||
43 | if { ! [ runto driver ] } then { return 0 } | |
44 | ||
45 | set limit 5 | |
46 | ||
47 | # Set breakpoints at each of the `caller' functions. | |
48 | for {set c 1} {$c <= $limit} {incr c} { | |
49 | gdb_test "break caller$c" "Breakpoint.*\[0-9\]*\\." "break caller$c" | |
50 | } | |
51 | ||
52 | # Set breakpoints at each of the `callee' functions. | |
53 | for {set c 1} {$c <= $limit} {incr c} { | |
54 | gdb_test "break callee$c" "Breakpoint.*\[0-9\]*\\." "break caller$c" | |
55 | } | |
56 | ||
57 | # For each caller function, | |
58 | # call each of the callee functions, | |
59 | # force a return from the callee, and | |
60 | # make sure that the local variables still have the right values. | |
61 | for {set c 1} {$c <= $limit} {incr c} { | |
62 | ||
63 | # Continue to the next caller function. | |
64 | gdb_test "continue" ".*/\\* caller$c \\*/" "run to caller$c" | |
65 | ||
66 | # Do each callee function. | |
67 | for {set e 1} {$e <= $limit} {incr e} { | |
68 | gdb_test " continue" ".*/\\* callee$e \\*/" "run to callee$e" | |
69 | ||
70 | # Do a forced return from the callee. | |
71 | send_gdb "return 0\n" | |
72 | gdb_expect { | |
73 | -re "Make .* return now.*y or n. $" { | |
74 | send_gdb "y\n" | |
75 | exp_continue | |
76 | } | |
77 | -re "$gdb_prompt $" { } | |
78 | } | |
79 | ||
80 | # Check that the values of the local variables are what | |
81 | # they should be. | |
82 | for {set var 1} {$var <= $c} {incr var} { | |
83 | set expected [expr 0xfeeb + $var] | |
84 | gdb_test "print l$var" " = $expected" \ | |
85 | "caller$c called callee$e; variable l$var restored" | |
86 | } | |
87 | } | |
88 | } | |
89 | ||
90 | send_gdb "continue\n" | |
91 | ||
92 | gdb_expect { | |
93 | -re "exiting" { | |
94 | pass "run to completion" | |
95 | } | |
96 | timeout { | |
97 | fail "(timeout) run to completion" | |
98 | } | |
99 | } | |
100 | } | |
101 | ||
102 | ||
103 | # Start with a fresh gdb. | |
104 | ||
105 | gdb_exit | |
106 | gdb_start | |
107 | gdb_reinitialize_dir $srcdir/$subdir | |
108 | gdb_load ${binfile} | |
109 | ||
110 | set timeout 30 | |
111 | restore_tests |