sepdebug.exp

这个是LINUX下的GDB调度工具的源码

gdb_expect {
    -re "#0\[ \t\]*($hex in )?marker2.*:($bp_location8|$bp_location9)\r\n#1.*_sr4export.*$gdb_prompt $"\
            {pass "backtrace while in called function"}
    -re "#0\[ \t\]*($hex in )?marker2.*:($bp_location8|$bp_location9)\r\n#1.*function called from gdb.*$gdb_prompt $"\
	    {pass "backtrace while in called function"}
    -re "$gdb_prompt $"\
            {fail "backtrace while in called function"}
    timeout {fail "(timeout) backtrace while in called function"}
}

# Return from the called function.  For remote targets, it's important to do
# this before runto_main, which otherwise may silently stop on the dummy
# breakpoint inserted by GDB at the program's entry point.
#
send_gdb "finish\n"
gdb_expect {
    -re "Run till exit from .*marker2.* at .*($bp_location8|$bp_location9)\r\n.* in _sr4export.*$gdb_prompt $"\
            {pass "finish from called function"}
    -re "Run till exit from .*marker2.* at .*($bp_location8|$bp_location9)\r\n.*function called from gdb.*$gdb_prompt $"\
            {pass "finish from called function"}
    -re "Run till exit from .*marker2.* at .*($bp_location8|$bp_location9)\r\n.*Value returned.*$gdb_prompt $"\
            {pass "finish from called function"}
    -re "$gdb_prompt $"\
            {fail "finish from called function"}
    timeout {fail "(timeout) finish from called function"}
}

# Verify that GDB responds gracefully to a "finish" command with
# arguments.
#
if ![runto_main] then { fail "break tests suppressed" }

send_gdb "finish 123\n"
gdb_expect {
  -re "The \"finish\" command does not take any arguments.\r\n$gdb_prompt $"\
          {pass "finish with arguments disallowed"}
  -re "$gdb_prompt $"\
          {fail "finish with arguments disallowed"}
  timeout {fail "(timeout) finish with arguments disallowed"}
}

# Verify that GDB responds gracefully to a request to "finish" from
# the outermost frame.  On a stub that never exits, this will just
# run to the stubs routine, so we don't get this error...  Thus the 
# second condition.
#

send_gdb "finish\n"
gdb_expect {
  -re "\"finish\" not meaningful in the outermost frame.\r\n$gdb_prompt $"\
          {pass "finish from outermost frame disallowed"}
  -re "Run till exit from.*\r\n$gdb_prompt $" {
     pass "finish from outermost frame disallowed"
  }
  -re "$gdb_prompt $"\
          {fail "finish from outermost frame disallowed"}
  timeout {fail "(timeout) finish from outermost frame disallowed"}
}

# Verify that we can explicitly ask GDB to stop on all shared library
# events, and that it does so.
#
if [istarget "hppa*-*-hpux*"] then {
  if ![runto_main] then { fail "break tests suppressed" }

  send_gdb "set stop-on-solib-events 1\n"
  gdb_expect {
    -re "$gdb_prompt $"\
            {pass "set stop-on-solib-events"}
    timeout {fail "(timeout) set stop-on-solib-events"}
  }

  send_gdb "run\n"
  gdb_expect {
    -re ".*Start it from the beginning.*y or n. $"\
            {send_gdb "y\n"
             gdb_expect {
               -re ".*Stopped due to shared library event.*$gdb_prompt $"\
                       {pass "triggered stop-on-solib-events"}
               -re "$gdb_prompt $"\
                       {fail "triggered stop-on-solib-events"}
               timeout {fail "(timeout) triggered stop-on-solib-events"}
             }
            }
    -re "$gdb_prompt $"\
            {fail "rerun for stop-on-solib-events"}
    timeout {fail "(timeout) rerun for stop-on-solib-events"}
  }

  send_gdb "set stop-on-solib-events 0\n"
  gdb_expect {
    -re "$gdb_prompt $"\
            {pass "reset stop-on-solib-events"}
    timeout {fail "(timeout) reset stop-on-solib-events"}
  }
}

# Hardware breakpoints are unsupported on HP-UX.  Verify that GDB
# gracefully responds to requests to create them.
#
if [istarget "hppa*-*-hpux*"] then {
  if ![runto_main] then { fail "break tests suppressed" }

  send_gdb "hbreak\n"
  gdb_expect {
    -re "No hardware breakpoint support in the target.*$gdb_prompt $"\
            {pass "hw breaks disallowed"}
    -re "$gdb_prompt $"\
            {fail "hw breaks disallowed"}
    timeout {fail "(timeout) hw breaks disallowed"}
  }

  send_gdb "thbreak\n"
  gdb_expect {
    -re "No hardware breakpoint support in the target.*$gdb_prompt $"\
            {pass "temporary hw breaks disallowed"}
    -re "$gdb_prompt $"\
            {fail "temporary hw breaks disallowed"}
    timeout {fail "(timeout) temporary hw breaks disallowed"}
  }
}

#********


#
# Test "next" over recursive function call.
#

proc test_next_with_recursion {} { 
    global gdb_prompt
    global decimal
    global binfile

    if [target_info exists use_gdb_stub] {
	# Reload the program.
	delete_breakpoints
	gdb_load ${binfile};
    } else {
	# FIXME: should be using runto
	gdb_test "kill" "" "kill program" "Kill the program being debugged.*y or n. $" "y"

	delete_breakpoints
    }

    gdb_test "break factorial" "Breakpoint $decimal at .*" "break at factorial"

    # Run until we call factorial with 6

    if [istarget "*-*-vxworks*"] then {
	send_gdb "run vxmain \"6\"\n"
    } else {
	gdb_run_cmd
    }
    gdb_expect {
	-re "Break.* factorial .value=6. .*$gdb_prompt $" {}
	-re ".*$gdb_prompt $" {
	    fail "run to factorial(6)";
	    gdb_suppress_tests;
	}
	timeout { fail "run to factorial(6) (timeout)" ; gdb_suppress_tests }
    }

    # Continue until we call factorial recursively with 5.

    if [gdb_test "continue" \
	"Continuing.*Break.* factorial .value=5. .*" \
	"continue to factorial(5)"] then { gdb_suppress_tests }

    # Do a backtrace just to confirm how many levels deep we are.

    if [gdb_test "backtrace" \
	"#0\[ \t\]+ factorial .value=5..*" \
	"backtrace from factorial(5)"] then { gdb_suppress_tests }

    # Now a "next" should position us at the recursive call, which
    # we will be performing with 4.

    if [gdb_test "next" \
	".* factorial .value - 1.;.*" \
	"next to recursive call"] then { gdb_suppress_tests }

    # Disable the breakpoint at the entry to factorial by deleting them all.
    # The "next" should run until we return to the next line from this
    # recursive call to factorial with 4.
    # Buggy versions of gdb will stop instead at the innermost frame on
    # the line where we are trying to "next" to.

    delete_breakpoints

    if [istarget "mips*tx39-*"] {
	set timeout 60
    }
    # We used to set timeout here for all other targets as well.  This
    # is almost certainly wrong.  The proper timeout depends on the
    # target system in use, and how we communicate with it, so there
    # is no single value appropriate for all targets.  The timeout
    # should be established by the Dejagnu config file(s) for the
    # board, and respected by the test suite.
    #
    # For example, if I'm running GDB over an SSH tunnel talking to a
    # portmaster in California talking to an ancient 68k board running
    # a crummy ROM monitor (a situation I can only wish were
    # hypothetical), then I need a large timeout.  But that's not the
    # kind of knowledge that belongs in this file.

    gdb_test next "\[0-9\]*\[\t \]+return \\(value\\);.*" \
	    "next over recursive call"

    # OK, we should be back in the same stack frame we started from.
    # Do a backtrace just to confirm.

    set result [gdb_test "backtrace" \
	    "#0\[ \t\]+ factorial .value=120.*\r\n#1\[ \t\]+ \[0-9a-fx\]+ in factorial .value=6..*" \
	    "backtrace from factorial(5.1)"]
    if { $result != 0 } { gdb_suppress_tests }

    if [target_info exists gdb,noresults] { gdb_suppress_tests }
  gdb_continue_to_end "recursive next test"
   gdb_stop_suppressing_tests;
}

test_next_with_recursion


#********

# now move the .debug file to a different location so that we can test
# the "set debug-file-directory" command.
  
remote_exec build "mv ${objdir}/${subdir}/.debug/${testfile}.debug ${objdir}/${subdir}"
gdb_exit
gdb_start
gdb_reinitialize_dir $srcdir/$subdir
gdb_test "set debug-file-directory ${objdir}/${subdir}" ".*" "set separate debug location"
gdb_load ${binfile}

if [target_info exists gdb_stub] {
    gdb_step_for_stub;
}

#
# test break at function
#
gdb_test "break main" \
    "Breakpoint.*at.* file .*$srcfile, line.*" \
    "breakpoint function, optimized file"

#
# test break at function
#
gdb_test "break marker4" \
    "Breakpoint.*at.* file .*$srcfile, line.*" \
    "breakpoint small function, optimized file"

#
# run until the breakpoint at main is hit. For non-stubs-using targets.
#
if ![target_info exists use_gdb_stub] {
  if [istarget "*-*-vxworks*"] then {
    send_gdb "run vxmain \"2\"\n"
    set timeout 120
    verbose "Timeout is now $timeout seconds" 2
  } else {
	send_gdb "run\n"
  }
  gdb_expect {
    -re "The program .* has been started already.*y or n. $" {
	send_gdb "y\n"
	exp_continue
    }
    -re "Starting program.*Breakpoint \[0-9\]+,.*main .*argc.*argv.* at .*$srcfile:$bp_location6.*$bp_location6\[\t \]+if .argc.* \{.*$gdb_prompt $"\
	                    { pass "run until function breakpoint, optimized file" }
    -re "Starting program.*Breakpoint \[0-9\]+,.*main .*argc.*argv.* at .*$gdb_prompt $"\
	                    { pass "run until function breakpoint, optimized file (code motion)" }
    -re ".*$gdb_prompt $"       { fail "run until function breakpoint, optimized file" }
    timeout	            { fail "run until function breakpoint, optimized file (timeout)" }
  }
} else {
    if ![target_info exists gdb_stub] {
	gdb_test continue ".*Continuing\\..*Breakpoint \[0-9\]+, main \\(argc=.*, argv=.*, envp=.*\\) at .*$srcfile:$bp_location6.*$bp_location6\[\t \]+if .argc.*\{.*" "stub continue, optimized file"
    }
}

#
# run until the breakpoint at a small function
#

#
# Add a second pass pattern.  The behavior differs here between stabs
# and dwarf for one-line functions.  Stabs preserves two line symbols
# (one before the prologue and one after) with the same line number, 
# but dwarf regards these as duplicates and discards one of them.
# Therefore the address after the prologue (where the breakpoint is)
# has no exactly matching line symbol, and GDB reports the breakpoint
# as if it were in the middle of a line rather than at the beginning.

set bp_location13 [gdb_get_line_number "set breakpoint 13 here"]
set bp_location14 [gdb_get_line_number "set breakpoint 14 here"]
send_gdb "continue\n"
gdb_expect {
    -re "Breakpoint $decimal, marker4 \\(d=177601976\\) at .*$srcfile:$bp_location13\[\r\n\]+$bp_location13\[\t \]+void marker4.*" {
	pass "run until breakpoint set at small function, optimized file"
    }
    -re "Breakpoint $decimal, $hex in marker4 \\(d=177601976\\) at .*$srcfile:$bp_location13\[\r\n\]+$bp_location13\[\t \]+void marker4.*" {
	pass "run until breakpoint set at small function, optimized file"
    }
    -re "Breakpoint $decimal, marker4 \\(d=177601976\\) at .*$srcfile:$bp_location14\[\r\n\]+$bp_location14\[\t \]+void marker4.*" {
        # marker4() is defined at line 46 when compiled with -DPROTOTYPES
	pass "run until breakpoint set at small function, optimized file (line bp_location14)"
    }
    -re ".*$gdb_prompt " {
	fail "run until breakpoint set at small function, optimized file"
    }
    timeout {
	fail "run until breakpoint set at small function, optimized file (timeout)"
    }
}


# Reset the default arguments for VxWorks
if [istarget "*-*-vxworks*"] {
    set timeout 10
    verbose "Timeout is now $timeout seconds" 2
    send_gdb "set args main\n"
    gdb_expect -re ".*$gdb_prompt $" {}
}