114 lines
4.1 KiB
Text
114 lines
4.1 KiB
Text
# Copyright 2012-2015 Free Software Foundation, Inc.
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>. */
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if {[skip_shlib_tests]} {
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return -1
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}
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set executable ctxobj-m
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# The sources used to build two shared libraries (SO). We use the exact
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# same sources to build both SOs, but differentiate them through the use
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# of macros defined when calling the compiler.
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#
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# We need two source files per SO, because we need to test the situation
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# where we are trying to print the value of a global variable defined
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# in that SO while the variable's associated symtab has not been created
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# yet.
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set libsrc [list "${srcdir}/${subdir}/ctxobj-v.c" \
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"${srcdir}/${subdir}/ctxobj-f.c"]
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set libobj1 [standard_output_file libctxobj1.so]
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set libobj2 [standard_output_file libctxobj2.so]
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set libobj1_opts { debug additional_flags=-fPIC
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additional_flags=-DVERSION=104
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additional_flags=-DGET_VERSION=get_version_1 }
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set libobj2_opts { debug additional_flags=-fPIC
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additional_flags=-DVERSION=203
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additional_flags=-DGET_VERSION=get_version_2 }
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if { [gdb_compile_shlib $libsrc $libobj1 $libobj1_opts ] != "" } {
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return -1
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}
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if { [gdb_compile_shlib $libsrc $libobj2 $libobj2_opts ] != "" } {
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return -1
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}
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if { [gdb_compile "${srcdir}/${subdir}/${executable}.c" \
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[standard_output_file ${executable}] \
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executable \
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[list debug shlib=${libobj1} shlib=${libobj2}]]
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!= ""} {
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return -1
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}
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clean_restart $executable
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gdb_load_shlibs $libobj1 $libobj2
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if ![runto_main] {
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untested "could not run to main"
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return -1
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}
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set bp_location [gdb_get_line_number "STOP" "ctxobj-f.c"]
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gdb_test "break ctxobj-f.c:$bp_location" \
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"Breakpoint \[0-9\]+ at 0x\[0-9a-fA-F\]+: .*" \
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"break in get_version functions"
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gdb_test "continue" \
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"Breakpoint $decimal, get_version_1 \\(\\).*" \
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"continue to get_version_1"
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# Try printing "this_version_num". There are two global variables
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# with that name, and some systems such as GNU/Linux merge them
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# into one single entity, while some other systems such as Windows
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# keep them separate. In the first situation, we have to verify
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# that GDB does not randomly select the wrong instance. And in
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# the second case, we have to verify that GDB prints the value
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# of the instance from the current debugging context (the shared
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# library currently being debugged).
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#
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# We perform two tests: The first print test verifies that we are
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# doing things right when the partial symtab hasn't been expanded.
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# And the second print test will do the same, but after the partial
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# symtab has been expanded.
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#
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# To avoid adding target-specific code in this testcase, the program
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# sets a local variable named 'v' with the value of the global
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# variable 'this_version_number'. This allows us to compare the value
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# that GDB thinks 'this_version_num' has, against the actual value
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# seen by the program itself.
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gdb_test "print this_version_num == v" \
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" = 1" \
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"print libctxobj1's this_version_num from partial symtab"
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gdb_test "print this_version_num == v" \
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" = 1" \
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"print libctxobj1's this_version_num from symtab"
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# Do the same, but from get_version_2.
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gdb_test "continue" \
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"Breakpoint $decimal, get_version_2 \\(\\).*" \
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"continue to get_version_2"
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gdb_test "print this_version_num == v" \
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" = 1" \
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"print libctxobj2's this_version_num from partial symtab"
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gdb_test "print this_version_num == v" \
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" = 1" \
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"print libctxobj2's this_version_num from symtab"
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