so-indr-cl.exp

这个是LINUX下的GDB调度工具的源码

#   Copyright 1997, 1998, 1999, 2000 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.  */

# Please email any bugs, comments, and/or additions to this file to:
# [e-mail]

if $tracelevel then {
	strace $tracelevel
	}

set prms_id 0
set bug_id 0

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

# This test is presently only valid on HP-UX, since it requires
# that we use HP-UX-specific compiler & linker options to build
# the testcase.
#
if {! [istarget "hppa*-*-*hpux*"] } {
    return
}

set libfile "solib"
set testfile "so-indr-cl"
set srcfile ${testfile}.c
set binfile ${objdir}/${subdir}/${testfile}

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

# Build the shared libraries this test case needs.
#
#cd ${subdir}
#remote_exec build "$CC -g +z -c ${libfile}1.c -o ${libfile}1.o"


if {$hp_cc_compiler || $hp_aCC_compiler} {
    set additional_flags "additional_flags=+z"
} else {
    set additional_flags "additional_flags=-fpic"
}
if {[gdb_compile "${srcdir}/${subdir}/${libfile}1.c" "${objdir}/${subdir}/${libfile}1.o" object [list debug $additional_flags]] != ""} {
    perror "Couldn't compile ${libfile}1.c"
    return -1
}

if [istarget "hppa*-hp-hpux*"] then {
    remote_exec build "ld -b ${objdir}/${subdir}/${libfile}1.o -o ${objdir}/${subdir}/${libfile}1.sl"
} else {
    set additional_flags "additional_flags=-shared"
    gdb_compile "${objdir}/${subdir}/${libfile}1.o" "${objdir}/${subdir}/${libfile}1.sl" executable [list debug $additional_flags]
}

# Build the test case
#remote_exec build "$CC -Aa -g ${srcfile} ${libfile}1.sl -o ${binfile}"


if {$hp_cc_compiler} {
    set additional_flags "additional_flags=-Ae"
} else {
    set additional_flags ""
}
if {[gdb_compile "${srcdir}/${subdir}/${srcfile} ${objdir}/${subdir}/${libfile}1.sl" "${binfile}" executable [list debug $additional_flags]] != ""} {
    perror "Couldn't build ${binfile}"
    return -1
}

#cd ..

# Start with a fresh gdb

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

# This program implicitly loads SOM shared libraries.  We wish to test
# whether a user can set breakpoints in a shlib before running the
# program, where the program doesn't directly call the shlib, but
# indirectly does via passing its address to another function.
#
# ??rehrauer: Currently, this doesn't work, but we do catch the case
# and explicitly disallow it.  The reason it fails appears to be that
#
#  [1] gdb consults only the linker symbol table in this scenario, and
#  [2] For a shlib function that is only indirectly called from the
#      main a.out, there is in the linker symbol table a stub whose
#      address is negative.  Possibly this is to be interpreted as
#      an index into the DLT??
#
send_gdb "break solib_main\n"
gdb_expect {
  -re "Cannot break on solib_main without a running program.*$gdb_prompt $"\
          {pass "break on indirect solib call before running"}
  -re "Breakpoint.*deferred.*\\(\"solib_main\" was not found.*$gdb_prompt $"\
	  {pass "break on indirect solib call before running 2"}
  -re "$gdb_prompt $"\
          {fail "break on indirect solib call before running"}
  timeout {fail "(timeout) break on indirect solib call before running"}
}

# However, if we do run to the program's main, we then ought to be
# able to set a breakpoint on the indirectly called function.  (Apparently,
# once the inferior is running, gdb consults the debug info rather than
# the linker symbol table, and is able to find the correct address.)
#
if ![runto_main] then { fail "indirect solib call tests suppressed" }

# Verify that we can step over the first shlib call.
#
send_gdb "break solib_main\n"
gdb_expect {
  -re ".*\[Bb\]reakpoint \[0-9\]* at 0x\[0-9a-fA-F\]*: file.*${libfile}1.c.*$gdb_prompt $"\
          {pass "break on indirect solib call after running"}
  -re "$gdb_prompt $"\
          {fail "break on indirect solib call after running"}
  timeout {fail "(timeout) break on indirect solib call after running"}
}

gdb_exit
return 0