summaryrefslogtreecommitdiff
path: root/gdb/testsuite/gdb.base/jit-reader-simple.exp
blob: 2210d75d486e3e318720d72e1fb33f5a5099ee2e (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
# Copyright 2012-2021 Free Software Foundation, Inc.

# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.

# Test re-running an inferior with a JIT descriptor, where the JIT
# descriptor changes address between runs.
# http://sourceware.org/bugzilla/show_bug.cgi?id=13431

# Test both the case of the JIT reader being included in the main
# program directly, and the case of the JIT reader being split out to
# a shared library.

# For completeness, also test when the JIT descriptor does not change
# address between runs.

if {[skip_shlib_tests]} {
    untested "skipping shared library tests"
    return -1
}

standard_testfile

set libname $testfile-jit
set srcfile_lib $srcdir/$subdir/$libname.c
set binfile_lib [standard_output_file $libname.so]
set binfile_lib2 [standard_output_file ${libname}2.so]

# Build a standalone JIT binary.

proc build_standalone_jit {{options ""}} {
    global testfile srcfile binfile

    lappend options "debug"

    if {[build_executable $testfile.exp $testfile $srcfile $options] == -1} {
	return -1
    }

    return 0
}

# Build the shared library JIT.

proc build_shared_jit {{options ""}} {
    global testfile
    global srcfile_lib binfile_lib binfile_lib2

    lappend options "debug"
    if { [gdb_compile_shlib $srcfile_lib $binfile_lib $options] != "" } {
	return -1
    }
    if { [gdb_compile_shlib $srcfile_lib $binfile_lib2 $options] != "" } {
	return -1
    }

    return 0
}

if {[build_standalone_jit] == -1} {
    untested "failed to compile standalone testcase"
    return
}

if {[build_shared_jit] == -1} {
    untested "failed to compile shared library testcase"
    return
}

# Build the program that loads the JIT library.
set srcfile_dl $testfile-dl.c
set binfile_dl $binfile-dl
set options [list debug shlib=${binfile_lib}]
if {[gdb_compile ${srcdir}/${subdir}/${srcfile_dl} $binfile_dl executable \
	 $options] == -1 } {
    untested "failed to compile"
    return -1
}

# Build the program that loads *two* JIT libraries.
set binfile_dl2 $binfile-dl2
set options [list debug shlib=${binfile_lib} shlib=${binfile_lib2}]
if {[gdb_compile ${srcdir}/${subdir}/${srcfile_dl} $binfile_dl2 executable \
	 $options] == -1 } {
    untested "failed to compile two-jitter binary"
    return -1
}

# STANDALONE is true when the JIT reader is included directly in the
# main program.  False when the JIT reader is in a separate shared
# library.  If CHANGE_ADDR is true, force changing the JIT descriptor
# changes address between runs.
proc jit_test_reread {standalone change_addr} {
    global testfile binfile subdir srcfile srcdir binfile_lib binfile_dl
    global hex

    with_test_prefix "initial run" {
	if {$standalone} {
	    clean_restart $binfile
	} else {
	    clean_restart $binfile_dl
	}

	runto_main

	set addr_before [get_hexadecimal_valueof "&__jit_debug_descriptor" 0 \
			     "get address of __jit_debug_descriptor"]

	gdb_test "maint info breakpoints" \
	    "jit events     keep y   $hex <__jit_debug_register_code>.*" \
	    "maint info breakpoints shows jit breakpoint"
    }

    with_test_prefix "second run" {
	# Ensure that the new executable is at least one second newer
	# than the old.  If the recompilation happens in the same
	# second, gdb might not reload the executable automatically.
	sleep 1

	if ${change_addr} {
	    set options "additional_flags=-DSPACER"
	    if {$standalone} {
		gdb_rename_execfile $binfile ${binfile}x
		set res [build_standalone_jit $options]
	    } else {
		gdb_rename_execfile $binfile_lib ${binfile_lib}x
		set res [build_shared_jit $options]
	    }
	    if  { $res == -1 } {
		fail "recompile"
		return
	    } else {
		pass "recompile"
	    }
	}

	runto_main

	set addr_after [get_hexadecimal_valueof "&__jit_debug_descriptor" 0 \
			    "get address of __jit_debug_descriptor"]

	# This used to crash in the JIT-in-shared-library case:
	# https://sourceware.org/bugzilla/show_bug.cgi?id=11094
	gdb_test "maint info breakpoints" \
	    "jit events     keep y   $hex <__jit_debug_register_code>.*" \
	    "maint info breakpoints shows jit breakpoint"
    }

    if ${change_addr} {
	gdb_assert {$addr_before != $addr_after} "address changed"
    } else {
	gdb_assert {$addr_before == $addr_after} "address didn't change"
    }
}

foreach standalone {1 0} {
    with_test_prefix [expr ($standalone)?"standalone":"shared"] {
	with_test_prefix "change addr" {
	    jit_test_reread $standalone 1
	}
	with_test_prefix "same addr" {
	    jit_test_reread $standalone 0
	}
    }
}

# Now start the program that loads two JITer libraries and expect to
# see JIT breakpoints defined for both.

with_test_prefix "two JITers" {
    clean_restart $binfile_dl2

    if {![runto_main]} {
	untested "could not run to main"
	return -1
    }

    set num_bps 0
    set ws "\[ \t\]+"
    gdb_test_multiple "maint info breakpoints" "have two jit breakpoints" {
	-re "jit events${ws}keep y${ws}$hex <__jit_debug_register_code> inf 1\r\n" {
	    incr num_bps
	    exp_continue
	}
	-re "$gdb_prompt $" {
	    if {$num_bps == 2} {
		pass $gdb_test_name
	    } else {
		fail $gdb_test_name
	    }
	}
    }
}