unload.exp

这个是LINUX下的GDB调度工具的源码

#   Copyright 2003, 2004
#   Free Software Foundation, Inc.

# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
# 
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
# 
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  

# This file was created by Jeff Johnston. ([e-mail])
# The shared library compilation portion was copied from shlib-call.exp which was
# written by Elena Zannoni ([e-mail]).

if $tracelevel then {
    strace $tracelevel
}

#
# test running programs
#
set prms_id 0
set bug_id 0

# are we on a target board?
if ![isnative] then {
    return 0
}

set testfile "unload"
set libfile "unloadshr"
set libsrcfile ${libfile}.c
set srcfile ${testfile}.c
set binfile ${objdir}/${subdir}/${testfile}
set shlibdir ${objdir}/${subdir}

if [get_compiler_info ${binfile}] {
    return -1
}

set dl_lib_flag ""
switch -glob [istarget] {
    "hppa*-hp-hpux*" { }
    "*-*-linux*"     { set dl_lib_flag "libs=-ldl" }
    "*-*-solaris*"   { set dl_lib_flag "libs=-ldl" }
    default          { }
}

if  { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable [list debug "additional_flags=-DSHLIB_DIR\=\"${shlibdir}\"" $dl_lib_flag]] != "" } {
     gdb_suppress_entire_file "Testcase compile failed, so all tests in this file will automatically fail."
}

# Build the shared libraries this test case needs.
#

if {$gcc_compiled == 0} {
    if [istarget "hppa*-hp-hpux*"] then {
	set additional_flags "additional_flags=+z"
    } elseif { [istarget "mips-sgi-irix*"] } {
	# Disable SGI compiler's implicit -Dsgi
	set additional_flags "additional_flags=-Usgi"
    } else {
	# don't know what the compiler is...
	set additional_flags ""
    }
} else {
    if { ([istarget "powerpc*-*-aix*"]
       || [istarget "rs6000*-*-aix*"]) } {
	set additional_flags ""
    } else {
	set additional_flags "additional_flags=-fpic"
    }
}

if {[gdb_compile "${srcdir}/${subdir}/${libsrcfile}" "${objdir}/${subdir}/${libfile}.o" object [list debug $additional_flags]] != ""} {
     gdb_suppress_entire_file "Testcase compile failed, so all tests in this file will automatically fail."
}

if [istarget "hppa*-*-hpux*"] {
    remote_exec build "ld -b ${objdir}/${subdir}/${libfile}.o -o ${objdir}/${subdir}/${libfile}.sl"
} else {
    set additional_flags "additional_flags=-shared"
    if {[gdb_compile "${objdir}/${subdir}/${libfile}.o" "${objdir}/${subdir}/${libfile}.sl" executable [list debug $additional_flags]] != ""} {
	gdb_suppress_entire_file "Testcase compile failed, so all tests in this file will automatically fail."
    }
}

gdb_exit
gdb_start
gdb_reinitialize_dir $srcdir/$subdir
gdb_load ${binfile}

if [target_info exists gdb_stub] {
    gdb_step_for_stub;
}

#
# Test setting a breakpoint in a dynamically loaded library which is
# manually loaded and unloaded
#

gdb_test_multiple "break shrfunc1" "set pending breakpoint" {
     -re ".*Make breakpoint pending.*y or \\\[n\\\]. $" {
	    gdb_test "y" "Breakpoint.*shrfunc1.*pending." "set pending breakpoint"
     }
}

gdb_test "info break" \
    "Num Type\[ \]+Disp Enb Address\[ \]+What.*
\[0-9\]+\[\t \]+breakpoint     keep y.*PENDING.*shrfunc1.*" \
"single pending breakpoint info"

set unloadshr_line [gdb_get_line_number "unloadshr break" ${srcdir}/${subdir}/${libsrcfile}]

gdb_test "run" \
"Starting program.*unload.*
Breakpoint.*at.*
Pending breakpoint \"shrfunc1\" resolved.*
Breakpoint.*, shrfunc1 \\\(x=3\\\).*unloadshr.c:$unloadshr_line.*" \
"running program"

gdb_test "continue" \
"Continuing.*y is 7.*warning: Temporarily disabling breakpoints for.*unloadshr.sl.*Program exited normally." \
"continuing to end of program"

#
# Try to rerun program and verify that shared breakpoint is reset properly
#

gdb_test "run" \
".*Breakpoint.*shrfunc1.*at.*unloadshr.c:$unloadshr_line.*" \
"rerun to shared library breakpoint"

gdb_test "continue" \
"Continuing.*y is 7.*warning: Temporarily disabling breakpoints for.*unloadshr.sl.*Program exited normally." \
"continuing to end of program second time"