diff options
Diffstat (limited to 'gdb/testsuite/gdb.base/stap-probe.exp')
| -rw-r--r-- | gdb/testsuite/gdb.base/stap-probe.exp | 146 |
1 files changed, 138 insertions, 8 deletions
diff --git a/gdb/testsuite/gdb.base/stap-probe.exp b/gdb/testsuite/gdb.base/stap-probe.exp index 6d521870c10..31a054840a5 100644 --- a/gdb/testsuite/gdb.base/stap-probe.exp +++ b/gdb/testsuite/gdb.base/stap-probe.exp @@ -15,6 +15,98 @@ standard_testfile +# Count the number of probes of TYPE (either 'stap' or 'dtrace'), +# from provider matching PROVIDER, with a name matching NAME, and from +# an objec file matching OBJECT. +# +# The OBJECT is optional, in which case all objects will be matched. +# +# If any error condition is detected, then perror is called, and -1 +# returned. +# +# Otherwise, returns an integer, 0 or greater. +proc gdb_count_probes { type provider name { object "" }} { + set cmd "info probes ${type} ${provider} ${name}" + if { $object != "" } { + set cmd "$cmd ${object}" + } + + set probe_count 0 + set no_probes_line false + gdb_test_multiple $cmd "" { + -re "^$cmd\r\n" { + exp_continue + } + -re "^Type\\s+Provider\\s+Name\\s+Where\\s+Semaphore\\s+Object\\s*\r\n" { + exp_continue + } + -re "^\\s*\r\n" { + exp_continue + } + -re "^stap\[^\r\n\]+\r\n" { + incr probe_count + exp_continue + } + -re "^dtrace\[^\r\n\]+\r\n" { + incr probe_count + exp_continue + } + -re "^No probes matched\\.\r\n" { + set no_probes_line true + exp_continue + } + -re "^$::gdb_prompt $" { + pass $gdb_test_name + } + } + + if { [expr $no_probes_line && $probe_count > 0] \ + || [expr !$no_probes_line && $probe_count == 0] } { + perror "Mismatch between no probes found line, and probes count" + return -1 + } + + return $probe_count +} + +proc check_for_usable_xmm0_probe { binfile } { + set readelf_program [gdb_find_readelf] + set binfile [standard_output_file $binfile] + set command "exec $readelf_program -n $binfile" + verbose -log "command is $command" + set result [catch $command output] + verbose -log "result is $result" + verbose -log "output is $output" + + # We don't actually check RESULT. Sometimes readelf gives + # warnings about gaps in some of the notes data. This is + # unrelated to the staps probes, but still causes readelf to exit + # with non-zero status. + # + # Instead, just check the output. If readelf failed to run then + # the output will be empty, and the following regexps will fail to + # match. + + # First, look for the xmmreg probe, and if we find it, grab the + # argument string. + if ![regexp {\n\s+Provider: test\n\s+Name: xmmreg\n[^\n]+\n\s+Arguments: ([^\n]+)\n} $output ignore arguments] { + verbose -log "APB: Couldn't find probe at all" + return false + } + + verbose -log "APB: Matched on '$ignore'" + verbose -log "APB: arguments: '$arguments'" + + # Check the the argument string mentions xmm0. + if ![regexp {@%?xmm0} $arguments] { + verbose -log "APB: Prove doesn't use xmm0 register" + return false + } + + # Success! We have a probe that uses xmm0 for an argument. + return true +} + # Run the tests. We run the tests two different ways: once with a # plain probe, and once with a probe that has an associated semaphore. # This returns -1 on failure to compile or start, 0 otherwise. @@ -29,7 +121,9 @@ proc stap_test {exec_name {args ""}} { set semaphore_addr_var "" if {[string first "-DUSE_SEMAPHORES" $args] == -1} { gdb_test_no_output "set breakpoint always-inserted on" - set semaphore_addr_var [get_hexadecimal_valueof "&relocation_marker" "0"] + set semaphore_addr_var \ + [get_hexadecimal_valueof "&relocation_marker" "0"\ + "get original address of relocation_marker"] } if ![runto_main] { @@ -40,10 +134,10 @@ proc stap_test {exec_name {args ""}} { "check argument not at probe point" if {[string first "-DUSE_SEMAPHORES" $args] != -1} { - gdb_test "info probes stap" \ + gdb_test_lines "info probes stap" "" \ "test *user *$hex *$hex .*" } else { - gdb_test "info probes stap" \ + gdb_test_lines "info probes stap" "" \ "test *user *$hex .*" } @@ -54,8 +148,11 @@ proc stap_test {exec_name {args ""}} { } if {[string first "-DUSE_SEMAPHORES" $args] == -1} { + set updated_semaphore_addr_var \ + [get_hexadecimal_valueof "&relocation_marker" \ + "0" "get revised relocation_marker address"] set relocation_base \ - [expr [get_hexadecimal_valueof "&relocation_marker" "0"] - $semaphore_addr_var] + [expr $updated_semaphore_addr_var - $semaphore_addr_var] if {$relocation_base != 0} { # Checks that GDB doesn't mistakenly relocate and write to null # semaphore addresses. If it were to relocate a zero-valued @@ -103,9 +200,9 @@ proc stap_test {exec_name {args ""}} { # Reinit GDB, set a breakpoint on probe ps. delete_breakpoints if {[runto "-pstap test:ps"]} { - pass "run to -pstap test:m4" + pass "run to -pstap test:ps" } else { - fail "run to -pstap test:m4" + fail "run to -pstap test:ps" } gdb_test "print \$_probe_argc" " = 3" \ @@ -114,6 +211,24 @@ proc stap_test {exec_name {args ""}} { " = $hex .This is another test message.*" \ "print \$_probe_arg1 for probe ps" + # Check the probe is using the xmm0 register. + if [check_for_usable_xmm0_probe $exec_name] { + + delete_breakpoints + if {[runto "-pstap test:xmmreg"]} { + pass "run to -pstap test:xmmreg" + } else { + fail "run to -pstap test:xmmreg" + } + + gdb_test "print \$_probe_argc" " = 1" \ + "print \$_probe_argc for probe xmmreg" + gdb_test "print/x \$_probe_arg0" " = 0x1234" \ + "check \$_probe_arg0 for probe xmmreg" + } else { + unsupported "print probe argument from \$xmm0 register" + } + return 0 } @@ -169,9 +284,9 @@ proc stap_test_no_debuginfo {exec_name {args ""}} { # Reinit GDB, set a breakpoint on probe ps. delete_breakpoints if {[runto "-pstap test:ps"]} { - pass "run to -pstap test:m4" + pass "run to -pstap test:ps" } else { - fail "run to -pstap test:m4" + fail "run to -pstap test:ps" } gdb_test "print \$_probe_argc" " = 3" \ @@ -180,6 +295,21 @@ proc stap_test_no_debuginfo {exec_name {args ""}} { " = $hex .This is another test message.*" \ "print \$_probe_arg1 for probe ps" + # Reinit GDB, set a breakpoint on probe ps. + if { [gdb_count_probes stap test xmmreg] > 0 } { + delete_breakpoints + if {[runto "-pstap test:xmmreg"]} { + pass "run to -pstap test:xmmreg" + } else { + fail "run to -pstap test:xmmreg" + } + + gdb_test "print \$_probe_argc" " = 1" \ + "print \$_probe_argc for probe xmmreg" + gdb_test "print/x \$_probe_arg0" " = 0x1234" \ + "check \$_probe_arg0 for probe xmmreg" + } + return 0 } |