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|
set test "labels"
if {![installtest_p]} {untested $test; return}
if {![utrace_p]} { untested $test; return }
# Compile a C program to use as the user-space probing target
set label_srcpath "[pwd]/labels.c"
set label_exepath "[pwd]/labels.x"
set label_sopath "[pwd]/labels.so"
set label_flags "additional_flags=-g"
set fp [open $label_srcpath "w"]
puts $fp "
int
foo ()
{
init_an_int:
return 1;
}
int
main ()
{
sleep(5);
foo();
int a = 0;
int b = 0;
char *c;
init_an_int:
a = 2;
init_an_int_again:
b = 3;
c = \"abc\";
ptr_inited:
return 1;
}
"
close $fp
set label_stppath "[pwd]/labels.stp"
set fp [open $label_stppath "w"]
puts $fp "
probe process(\"labels.x\").function(\"main@labels.c\").label(\"init_*\") {printf (\"VARS %s\\n\",\$\$vars)}
probe process(\"labels.x\").function(\"main@labels.c\").label(\"ptr_inited\") {printf (\"VARS %s\\n\",\$\$vars)}
probe process(\"labels.x\").function(\"main@labels.c\").label(\"init_an_int\") {printf (\"init_an_int\\n\")}
"
close $fp
set ok 0
set res [target_compile $label_srcpath $label_exepath executable $label_flags]
if { $res != "" } {
verbose "target_compile failed: $res" 2
fail "compiling labels.c -g"
catch {exec rm -f $label_srcpath $label_stppath}
return
} else {
pass "compiling labels.c -g"
}
# line number error
set ok 0
spawn stap -l "process(\"$label_exepath\").function(\"foo@${label_srcpath}:10\").label(\"*\")"
wait
expect {
-timeout 180
-re {no match while resolving probe point} { incr ok; exp_continue }
timeout { fail "$test (timeout)" }
eof { }
}
if {$ok == 1} { pass "$test :N .label" } { fail "$test :N .label $ok" }
# line number
set ok 0
spawn stap -l "process(\"$label_exepath\").function(\"foo@${label_srcpath}:4\").label(\"*\")"
wait
expect {
-timeout 180
-re {process.*function.*labels.c:5...label..init_an_int} { incr ok; exp_continue }
timeout { fail "$test (timeout)" }
eof { }
}
if {$ok == 1} { pass "$test :N .label" } { fail "$test :N .label $ok" }
# list of labels
spawn stap -l "process(\"$label_exepath\").function(\"*\").label(\"*\")"
wait
set ok 0
expect {
-timeout 180
-re {^process[^\r\n]*function[^\r\n]*labels.c:5...label..init_an_int..\r\n}
{ incr ok; exp_continue }
-re {^process[^\r\n]*function[^\r\n]*labels.c:16...label..init_an_int..\r\n}
{ incr ok; exp_continue }
-re {^process[^\r\n]*function[^\r\n]*labels.c:18...label..init_an_int_again..\r\n}
{ incr ok; exp_continue }
-re {^process[^\r\n]*function[^\r\n]*labels.c:21...label..ptr_inited..\r\n}
{ incr ok; exp_continue }
timeout { fail "$test (timeout)" }
eof { }
}
if {$ok == 4} { pass "$test -l .label" } { fail "$test -l .label $ok" }
# label in an executable
set ok 0
verbose -log "spawn stap -c $label_exepath $label_stppath"
spawn stap -c $label_exepath $label_stppath
wait
expect {
-timeout 180
-re {VARS a=0x0 b=0x0.*init_an_int.*VARS a=0x2 b=0x0.*VARS a=0x2 b=0x3 c=0x[a-f01-9]} { incr ok; exp_continue }
timeout { fail "$test (timeout)" }
eof { }
}
if {$ok == 1} { pass "$test exe .label" } { fail "$test exe .label $ok" }
# address of label in an executable
set label_shpath "[pwd]/label.sh"
set fp [open $label_shpath "w"]
puts $fp "
readelf --debug-dump $label_exepath | awk \"
/init_an_int_again/ {have_label=1}
/DW_AT_low_pc/ {if (have_label) {print \$3;exit;}}
\"
"
close $fp
spawn sh $label_shpath
expect {
-re {0x[0-9a-f]*}
}
set nomatch 0
spawn stap -p2 -l "process\(\"$label_exepath\"\).statement($expect_out(0,string))"
expect {
-timeout 180
-re {semantic error: no match} { incr nomatch; exp_continue }
timeout { fail "$test (timeout)" }
eof { }
}
if {$nomatch == 0} { pass "$test exe .statement" } { fail "$test exe .statement" }
set ok 0
set label_flags "additional_flags=-g additional_flags=-shared additional_flags=-fPIC"
set res [target_compile $label_srcpath $label_sopath executable $label_flags]
if { $res != "" } {
verbose "target_compile failed: $res" 2
fail "compiling labels.c -g"
catch {exec rm -f $label_srcpath $label_stppath}
return
} else {
pass "compiling labels.c -g"
}
# label in a shared object
spawn stap -p2 -l "process\(\"$label_sopath\"\).function\(\"\*\"\).label\(\"init_an_int_again\"\)"
expect {
-timeout 180
-re {process.*function} { incr ok; exp_continue }
timeout { fail "$test (timeout)" }
eof { }
}
if {$ok == 1} { pass "$test so .label" } { fail "$test so .label $ok" }
# address of label in a shared object
set label_shpath "[pwd]/label.sh"
set fp [open $label_shpath "w"]
puts $fp "
readelf --debug-dump $label_sopath | awk \"
/init_an_int_again/ {have_label=1}
/DW_AT_low_pc/ {if (have_label) {print \$3;exit;}}
\"
"
close $fp
spawn sh $label_shpath
expect {
-re {0x[0-9a-f]*}
}
set nomatch 0
spawn stap -p2 -l "process\(\"$label_sopath\"\).statement($expect_out(0,string))"
expect {
-timeout 180
-re {semantic error: no match} { incr nomatch; exp_continue }
timeout { fail "$test (timeout)" }
eof { }
}
if {$nomatch == 0} { pass "$test so .statement" } { fail "$test so .statement" }
catch {exec rm -f $label_srcpath $label_stppath $label_exepath $label_shpath $label_sopath}
|
