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7b6bb8da | 1 | # Copyright 2002, 2003, 2005, 2007, 2008, 2009, 2010, 2011 |
a04ba985 JG |
2 | # Free Software Foundation, Inc. |
3 | ||
4 | # This program is free software; you can redistribute it and/or modify | |
5 | # it under the terms of the GNU General Public License as published by | |
6 | # the Free Software Foundation; either version 3 of the License, or | |
7 | # (at your option) any later version. | |
8 | # | |
9 | # This program is distributed in the hope that it will be useful, | |
10 | # but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
12 | # GNU General Public License for more details. | |
13 | # | |
14 | # You should have received a copy of the GNU General Public License | |
15 | # along with this program. If not, see <http://www.gnu.org/licenses/>. */ | |
16 | ||
17 | # code_elim.exp -- tests that GDB can handle executables where some data/code | |
18 | # has been eliminated by the linker. | |
19 | ||
20 | if $tracelevel then { | |
21 | strace $tracelevel | |
22 | } | |
23 | ||
24 | set testfile1 code_elim1 | |
25 | set testfile2 code_elim2 | |
26 | set srcfile1 ${testfile1}.c | |
27 | set srcfile2 ${testfile2}.c | |
28 | set binfile1 ${objdir}/${subdir}/${testfile1} | |
29 | set binfile2 ${objdir}/${subdir}/${testfile2} | |
30 | set opts [list debug] | |
31 | lappend opts "additional_flags=-ffunction-sections" | |
32 | lappend opts "additional_flags=-fdata-sections" | |
33 | lappend opts "additional_flags=-Wl,-gc-sections" | |
34 | lappend opts "additional_flags=-Wl,-e,main" | |
35 | ||
36 | remote_exec build "rm -f ${binfile1}" | |
37 | remote_exec build "rm -f ${binfile2}" | |
38 | ||
39 | if { [gdb_compile "${srcdir}/${subdir}/${srcfile1}" "${binfile1}" executable $opts] != "" } { | |
40 | untested code_elim.exp | |
41 | return -1 | |
42 | } | |
43 | ||
44 | if { [gdb_compile "${srcdir}/${subdir}/${srcfile2}" "${binfile2}" executable $opts] != "" } { | |
45 | untested code_elim.exp | |
46 | return -1 | |
47 | } | |
48 | ||
49 | proc get_var_address { var } { | |
50 | global gdb_prompt hex | |
51 | ||
52 | # Match output like: | |
53 | # $1 = (int *) 0x0 | |
54 | # $5 = (int (*)()) 0 | |
55 | # $6 = (int (*)()) 0x24 <function_bar> | |
56 | ||
57 | gdb_test_multiple "print &${var}" "get address of ${var}" { | |
58 | -re "\\\$\[0-9\]+ = \\(.*\\) (0|$hex)( <${var}>)?\[\r\n\]+${gdb_prompt} $" { | |
59 | pass "get address of ${var}" | |
60 | if { $expect_out(1,string) == "0" } { | |
61 | return "0x0" | |
62 | } else { | |
63 | return $expect_out(1,string) | |
64 | } | |
65 | } | |
66 | } | |
67 | return "" | |
68 | } | |
69 | ||
70 | proc not_null_var_address { var } { | |
71 | ||
72 | # Same as get_var_address, expect that it reports a failure if a null | |
73 | # address is returned by gdb. | |
74 | ||
75 | set address [get_var_address $var] | |
76 | regexp "0x\[0-9a-fA-F\]+" $address address | |
77 | if { "$address" == "0x0" } { | |
78 | fail "$var has null address" | |
79 | } | |
80 | } | |
81 | ||
82 | proc test_eliminated_var { var } { | |
83 | global gdb_prompt hex | |
84 | ||
85 | # Match output 'No symbol "${var}" in current context' | |
86 | ||
87 | gdb_test_multiple "print &${var}" "test eliminated var ${var}" { | |
88 | -re "No symbol \"${var}\" in current context\\.\[\r\n\]+${gdb_prompt} $" { | |
89 | pass "test eliminated var ${var}" | |
90 | } | |
91 | -re "\\\$\[0-9\]+ = \\(.*\\) (0|$hex)( <${var}>)?\[\r\n\]+${gdb_prompt} $" { | |
92 | fail "test eliminated var ${var}" | |
93 | } | |
94 | } | |
95 | } | |
96 | ||
97 | # Check that the code and data eliminated in binfile1 are not included | |
98 | # into partial symtab... and that non-eliminated symbols are still there. | |
99 | ||
100 | gdb_exit | |
101 | gdb_start | |
102 | ||
103 | gdb_test "add-symbol-file ${binfile1} 0x100000" \ | |
104 | "Reading symbols from .*${testfile1}\\.\\.\\.done\\.(|\r\nUsing host libthread_db library .*libthread_db.so.*\\.)" \ | |
105 | "add-symbol-file ${testfile1} 0x100000" \ | |
106 | "add symbol table from file \".*${testfile1}\" at\[ \t\r\n\]+\.text_addr = 0x100000\[\r\n\]+\\(y or n\\) " \ | |
107 | "y" | |
108 | ||
109 | test_eliminated_var my_global_symbol | |
110 | test_eliminated_var my_static_symbol | |
111 | test_eliminated_var my_global_func | |
112 | not_null_var_address main | |
113 | ||
114 | # Same thing for symtabs | |
115 | ||
116 | gdb_exit | |
117 | global GDBFLAGS | |
118 | set saved_gdbflags $GDBFLAGS | |
119 | set GDBFLAGS "$GDBFLAGS --readnow $binfile1" | |
120 | gdb_start | |
121 | set GDBFLAGS $saved_gdbflags | |
122 | ||
123 | test_eliminated_var my_global_symbol | |
124 | test_eliminated_var my_static_symbol | |
125 | test_eliminated_var my_global_func | |
126 | not_null_var_address main | |
127 | ||
128 | # binfile2 contains the symbols that have been eliminated in binfile1. Check | |
129 | # the eliminated symbols does not hide these valid ones. | |
130 | ||
131 | gdb_exit | |
132 | gdb_start | |
133 | ||
134 | gdb_test "add-symbol-file ${binfile1} 0x100000" \ | |
135 | "Reading symbols from .*${testfile1}\\.\\.\\.done\\." \ | |
136 | "add-symbol-file ${testfile1} 0x100000" \ | |
137 | "add symbol table from file \".*${testfile1}\" at\[ \t\r\n\]+\.text_addr = 0x100000\[\r\n\]+\\(y or n\\) " \ | |
138 | "y" | |
139 | ||
140 | gdb_test "add-symbol-file ${binfile2} 0x200000" \ | |
141 | "Reading symbols from .*${testfile2}\\.\\.\\.done\\." \ | |
142 | "add-symbol-file ${testfile2} 0x200000" \ | |
143 | "add symbol table from file \".*${testfile2}\" at\[ \t\r\n\]+\.text_addr = 0x200000\[\r\n\]+\\(y or n\\) " \ | |
144 | "y" | |
145 | ||
146 | not_null_var_address my_global_symbol | |
147 | not_null_var_address my_static_symbol | |
148 | not_null_var_address my_global_func | |
149 | not_null_var_address main | |
150 | ||
151 | # Same thing, but loading binfile2 before binfile1. | |
152 | ||
153 | gdb_exit | |
154 | gdb_start | |
155 | ||
156 | gdb_test "add-symbol-file ${binfile2} 0x200000" \ | |
157 | "Reading symbols from .*${testfile2}\\.\\.\\.done\\." \ | |
158 | "add-symbol-file ${testfile2} 0x200000" \ | |
159 | "add symbol table from file \".*${testfile2}\" at\[ \t\r\n\]+\.text_addr = 0x200000\[\r\n\]+\\(y or n\\) " \ | |
160 | "y" | |
161 | ||
162 | gdb_test "add-symbol-file ${binfile1} 0x100000" \ | |
163 | "Reading symbols from .*${testfile1}\\.\\.\\.done\\." \ | |
164 | "add-symbol-file ${testfile1} 0x100000" \ | |
165 | "add symbol table from file \".*${testfile1}\" at\[ \t\r\n\]+\.text_addr = 0x100000\[\r\n\]+\\(y or n\\) " \ | |
166 | "y" | |
167 | ||
168 | not_null_var_address my_global_symbol | |
169 | not_null_var_address my_static_symbol | |
170 | not_null_var_address my_global_func | |
171 | not_null_var_address main | |
172 | ||
173 |