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# Builds various variants of an executable and a shared library
# (with gcc/g++, -O0/-O3, prelinked/pie, seperate debuginfo)
# Then runs tests with a list of execs.
# Don't enable all sub-tests by default, enable them separately when
# you want to track down an issue.
# Enable just the all-in-one test for regular test runs to safe time
#set subtestlist {lib mark uname ustack cleanup}
set subtestlist {libmarkunamestack cleanup}
proc seperate_debuginfo {elffile} {
set objcopy [list "objcopy" "--only-keep-debug"]
lappend objcopy "$elffile"
lappend objcopy "${elffile}.debug"
send_log "Executing: $objcopy\n"
eval exec $objcopy
set objcopy [list "objcopy" "--strip-debug"]
lappend objcopy "$elffile"
send_log "Executing: $objcopy\n"
eval exec $objcopy
set objcopy [list "objcopy"]
lappend objcopy "--add-gnu-debuglink=${elffile}.debug"
lappend objcopy "$elffile"
send_log "Executing: $objcopy\n"
eval exec $objcopy
}
set testnames {}
set testpath "$srcdir/$subdir"
set testsrc "$testpath/uprobes_exe.c"
set testsrclib "$testpath/uprobes_lib.c"
set testlibdir "."
set arches [list "default"]
# BUG! non-default arch breaks mark and ustack tests PR10318 and PR10272
#switch -regexp $::tcl_platform(machine) {
# {^(x86_64|ppc64)$} { lappend arches "-m32" }
# {^s390x$} { lappend arches "-m31" }
#}
foreach arch $arches {
# Compiling with plain gcc. g++ is also supported but disabled
# because it didn't add much interesting differences in binaries
# and exploded the test search case a bit.
foreach compiler {gcc} { # Add g++
# Just try -O3.
# Adding -O0, -O, -O2, -Os and mixing lib/exe is a bit overdone
foreach opt {-O3} {
foreach libprelink {no yes} {
# not done yet, "no" lib debug.
# seperate debuginfo can be done before or after prelinking
# (after is only done if prelinking is also done
foreach libdebug {yes sep sep-after} {
set libname "uprobeslib${compiler}${opt}${arch}"
if {$libprelink == "yes"} {
set libname $libname-prelink
}
# This combination doesn't make sense
if {$libdebug == "sep-after" && $libprelink == "no"} {
continue;
}
if {$libdebug == "sep"} {
set libname $libname-sep-debug
} elseif {$libdebug == "sep-after"} {
set libname $libname-sep-debug-after
} else {
set libname $libname-debug
}
# General compiler flags
# We want the sdt.h from the source dir.
set testflags "additional_flags=-I$srcdir/../includes/sys"
# For now we always require debuginfo
set testflags "$testflags additional_flags=-g"
if {$arch != "default"} {
set testflags "$testflags additional_flags=$arch"
}
if {$compiler == "g++"} {
set testflags "$testflags additional_flags=-x additional_flags=c++"
}
set testflags "$testflags additional_flags=$opt"
# Extra flags for libraries
set testlibflags "$testflags additional_flags=-fPIC"
set testlibflags "$testlibflags additional_flags=-shared"
set testso "$testlibdir/lib${libname}.so"
set res [target_compile $testsrclib $testso executable $testlibflags]
if { $res != "" } {
verbose "target_compile for $testso failed: $res" 2
fail "$libname compile [file tail $testsrclib]"
return
} else {
pass "$libname compile [file tail $testsrclib]"
}
# seperate debuginfo before prelinking
if {$libdebug == "sep"} {
seperate_debuginfo $testso
}
if {$libprelink == "yes"} {
set prelink_bin "/usr/sbin/prelink"
set addr "-r 0x6400000"
set prelink_cmd [concat $prelink_bin -vfNR $addr $testso]
send_log "Executing: $prelink_cmd\n"
catch {eval exec $prelink_cmd} result
verbose -log "result is $result"
}
# seperate debuginfo after prelinking
if {$libdebug == "sep-after"} {
seperate_debuginfo $testso
}
# should we also prelink exes?
foreach exepie {no yes} {
# not supported, "no" exe debug.
foreach exedebug {yes sep} {
set exename uprobes$compiler$opt$arch
# Extra exe compile flags to include lib
set testexeflags "$testflags additional_flags=-L$testlibdir additional_flags=-l$libname additional_flags=-Wl,-rpath,$testlibdir"
if {$exepie == "yes"} {
set exename $exename-pie
set testexeflags "$testexeflags additional_flags=-fPIE additional_flags=-pie"
}
if {$exedebug == "sep"} {
set exename $exename-sep-debug
} else {
set exename $exename-debug
}
set exename $exename-$libname
set testexe "$testlibdir/${exename}_exe"
set res [target_compile $testsrc $testexe executable $testexeflags]
if { $res != "" } {
verbose "target_compile for $testexe failed: $res" 2
fail "$exename compile [file tail $testsrc]"
return
} else {
pass "$exename compile [file tail $testsrc]"
}
if {$exedebug == "sep"} {
seperate_debuginfo $testexe
}
set testname "${exename}_${libname}"
lappend testnames $testname
}
}
}
}
}
}
}
# Call a test for each exe, set lib to shared library used
foreach subtest $subtestlist {
foreach testname $testnames {
set exelib [split $testname {_}]
set testexe [lindex $exelib 0]
set testexe "${testlibdir}/${testexe}_exe"
set testlib [lindex $exelib 1]
set testlib "${testlibdir}/lib${testlib}.so"
send_log "sourcing: $srcdir/$subdir/$subtest.tcl for $testname\n"
source $srcdir/$subdir/$subtest.tcl
}
}
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